CHANGES

 _ _ ____ _
 ___| | | | _ \| |
 / __| | | | |_) | |
 | (__| |_| | _ <| |___
 \___|\___/|_| \_\_____|

 Changelog

Version 7.57.0 (29 Nov 2017)

Daniel Stenberg (29 Nov 2017)
- RELEASE-NOTES: curl 7.57.0

- THANKS: added contributors from 7.57.0 release

- openssl: fix boringssl build again
 
 commit d3ab7c5a21e broke the boringssl build since it doesn't have
 RSA_flags(), so we disable that code block for boringssl builds.
 
 Reported-by: W. Mark Kubacki
 Fixes #2117

- curl_ntlm_core.c: use the limits.h's SIZE_T_MAX if provided

- libcurl-share.3: the connection cache is shareable now

- global_init: ignore CURL_GLOBAL_SSL's absense
 
 This bit is no longer used. It is not clear what it meant for users to
 "init the TLS" in a world with different TLS backends and since the
 introduction of multissl, libcurl didn't properly work if inited without
 this bit set.
 
 Not a single user responded to the call for users of it:
 https://curl.haxx.se/mail/lib-2017-11/0072.html
 
 Reported-by: Evgeny Grin
 Assisted-by: Jay Satiro
 
 Fixes #2089
 Fixes #2083
 Closes #2107

- ntlm: avoid integer overflow for malloc size
 
 Reported-by: Alex Nichols
 Assisted-by: Kamil Dudka and Max Dymond
 
 CVE-2017-8816
 
 Bug: https://curl.haxx.se/docs/adv_2017-11e7.html

- wildcardmatch: fix heap buffer overflow in setcharset
 
 The code would previous read beyond the end of the pattern string if the
 match pattern ends with an open bracket when the default pattern
 matching function is used.
 
 Detected by OSS-Fuzz:
 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4161
 
 CVE-2017-8817
 
 Bug: https://curl.haxx.se/docs/adv_2017-ae72.html

- [Jay Satiro brought this change]

 url: fix alignment of ssl_backend_data struct
 
 - Align the array of ssl_backend_data on a max 32 byte boundary.
 
 8 is likely to be ok but I went with 32 for posterity should one of
 the ssl_backend_data structs change to contain a larger sized variable
 in the future.
 
 Prior to this change (since dev 70f1db3, release 7.56) the connectdata
 structure was undersized by 4 bytes in 32-bit builds with ssl enabled
 because long long * was mistakenly used for alignment instead of
 long long, with the intention being an 8 byte boundary. Also long long
 may not be an available type.
 
 The undersized connectdata could lead to oob read/write past the end in
 what was expected to be the last 4 bytes of the connection's secondary
 socket https proxy ssl_backend_data struct (the secondary socket in a
 connection is used by ftp, others?).
 
 Closes https://github.com/curl/curl/issues/2093
 
 CVE-2017-8818
 
 Bug: https://curl.haxx.se/docs/adv_2017-af0a.html

- ssh: remove check for a NULL pointer (!)
 
 With this check present, scan-build warns that we might dereference this
 point in other places where it isn't first checked for NULL. Thus, if it
 *can* be NULL we have a problem on a few places. However, this pointer
 should not be possible to be NULL here so I remove the check and thus
 also three different scan-build warnings.
 
 Closes #2111

- [Matthew Kerwin brought this change]

 test: add test for bad UNC/SMB path in file: URL

- [Matthew Kerwin brought this change]

 test: add tests to ensure basic file: URLs

- [Matthew Kerwin brought this change]

 URL: update "file:" URL handling
 
 * LOTS of comment updates
 * explicit error for SMB shares (e.g. "file:////share/path/file")
 * more strict handling of authority (i.e. "//localhost/")
 * now accepts dodgy old "C:|" drive letters
 * more precise handling of drive letters in and out of Windows
 (especially recognising both "file:c:/" and "file:/c:/")
 
 Closes #2110

- metalink: fix memory-leak and NULL pointer dereference
 
 Reported by scan-build
 
 Closes #2109

- [Alessandro Ghedini brought this change]

 connect: add support for new TCP Fast Open API on Linux
 
 The new API added in Linux 4.11 only requires setting a socket option
 before connecting, without the whole sento() machinery.
 
 Notably, this makes it possible to use TFO with SSL connections on Linux
 as well, without the need to mess around with OpenSSL (or whatever other
 SSL library) internals.
 
 Closes #2056

- make: fix "make distclean"
 
 Fixes #2097
 Closes #2108

- RELEASE-NOTES: synced with 31f18d272

Jay Satiro (23 Nov 2017)
- connect: improve the bind error message
 
 eg consider a non-existent interface eth8, curl --interface eth8
 
 Before: curl: (45) Could not resolve host: eth8
 After: curl: (45) Couldn't bind to 'eth8'
 
 Bug: https://github.com/curl/curl/issues/2104
 Reported-by: Alfonso Martone

Daniel Stenberg (23 Nov 2017)
- examples/rtsp: clear RANGE again after use
 
 Fixes #2106
 Reported-by: youngchopin on github

- [Michael Kaufmann brought this change]

 test1264: verify URL with space in host name being rejected

- url: reject ASCII control characters and space in host names
 
 Host names like "127.0.0.1 moo" would otherwise be accepted by some
 getaddrinfo() implementations.
 
 Updated test 1034 and 1035 accordingly.
 
 Fixes #2073
 Closes #2092

- Curl_open: fix OOM return error correctly
 
 Closes #2098

- http2: fix "Value stored to 'end' is never read" scan-build error

- http2: fix "Value stored to 'hdbuf' is never read" scan-build error

- openssl: fix "Value stored to 'rc' is never read" scan-build error

- mime: fix "Value stored to 'sz' is never read" scan-build error

- Curl_llist_remove: fix potential NULL pointer deref
 
 Fixes a scan-build warning.

- ntlm: remove unnecessary NULL-check to please scan-build

- BUGS: spellchecked

Jay Satiro (18 Nov 2017)
- [fmmedeiros brought this change]

 examples/curlx: Fix code style
 
 - Add braces around multi-line if statement.
 
 Closes https://github.com/curl/curl/pull/2096

Daniel Stenberg (17 Nov 2017)
- resolve: allow IP address within [] brackets
 
 ... so that IPv6 addresses can be passed like they can for connect-to
 and how they're used in URLs.
 
 Added test 1324 to verify
 Reported-by: Alex Malinovich
 
 Fixes #2087
 Closes #2091

- [Pavol Markovic brought this change]

 macOS: Fix missing connectx function with Xcode version older than 9.0
 
 The previous fix https://github.com/curl/curl/pull/1788 worked just for
 Xcode 9. This commit extends the fix to older Xcode versions effectively
 by not using connectx function.
 
 Fixes https://github.com/curl/curl/issues/1330
 Fixes https://github.com/curl/curl/issues/2080
 Closes https://github.com/curl/curl/pull/1336
 Closes #2082

- [Dirk Feytons brought this change]

 openssl: fix too broad use of HAVE_OPAQUE_EVP_PKEY
 
 Fixes #2079
 Closes #2081

- TODO: ignore private IP addresses in PASV response
 
 Closes #1455

- RELEASE-NOTES: synced with ae7369b6d

Michael Kaufmann (14 Nov 2017)
- URL: return error on malformed URLs with junk after IPv6 bracket
 
 Follow-up to aadb7c7. Verified by new test 1263.
 
 Closes #2072

Daniel Stenberg (14 Nov 2017)
- INTERNALS: we may use libidn2 now, not libidn

Patrick Monnerat (13 Nov 2017)
- zlib/brotli: only include header files in modules needing them
 
 There is a conflict on symbol 'free_func' between openssl/crypto.h and
 zlib.h on AIX. This is an attempt to resolve it.
 
 Bug: https://curl.haxx.se/mail/lib-2017-11/0032.html
 Reported-By: Michael Felt

Daniel Stenberg (13 Nov 2017)
- SMB: fix uninitialized local variable
 
 Reported-by: Brian Carpenter

- [Orgad Shaneh brought this change]

 connect.c: remove executable bit on file
 
 Closes #2071

- [hsiao yi brought this change]

 README.md: fixed layout
 
 Closes #2069

- setopt: split out curl_easy_setopt() to its own file
 
 ... to make url.c smaller.
 
 Closes #1944

Jay Satiro (10 Nov 2017)
- [John Starks brought this change]

 cmake: Add missing setmode check
 
 Ensure HAVE_SETMODE is set to 1 on OSes that have setmode. Without this,
 curl will corrupt binary files when writing them to stdout on Windows.
 
 Closes https://github.com/curl/curl/pull/2067

Daniel Stenberg (10 Nov 2017)
- curl_share_setopt: va_end was not called if conncache errors
 
 CID 984459, detected by Coverity

Sergei Nikulov (10 Nov 2017)
- [John Starks brought this change]

 cmake: Correctly include curl.rc in Windows builds (#2064)
 
 Update CMakeLists.txt to add curl.rc to the correct list.

Daniel Stenberg (9 Nov 2017)
- RELEASE-NOTES: synced with 32828cc4f

- [Luca Boccassi brought this change]

 --interface: add support for Linux VRF
 
 The --interface command (CURLOPT_INTERFACE option) already uses
 SO_BINDTODEVICE on Linux, but it tries to parse it as an interface or IP
 address first, which fails in case the user passes a VRF.
 
 Try to use the socket option immediately and parse it as a fallback
 instead. Update the documentation to mention this feature, and that it
 requires the binary to be ran by root or with CAP_NET_RAW capabilities
 for this to work.
 
 Closes #2024

- curl_share_setopt.3: document CURL_LOCK_DATA_CONNECT
 
 Closes #2043

- examples: add shared-connection-cache

- test1554: verify connection cache sharing

- share: add support for sharing the connection cache

- imap: deal with commands case insensitively
 
 As documented in RFC 3501 section 9:
 https://tools.ietf.org/html/rfc3501#section-9
 
 Closes #2061

- connect: store IPv6 connection status after valid connection
 
 ... previously it would store it already in the happy eyeballs stage
 which could lead to the IPv6 bit being set for an IPv4 connection,
 leading to curl not wanting to do EPSV=>PASV for FTP transfers.
 
 Closes #2053

- curl_multi_fdset.3: emphasize curl_multi_timeout
 
 ... even when there's no socket to wait for, the timeout can still be
 very short.

Jay Satiro (9 Nov 2017)
- content_encoding: fix inflate_stream for no bytes available
 
 - Don't call zlib's inflate() when avail_in stream bytes is 0.
 
 This is a follow up to the parent commit 19e66e5. Prior to that change
 libcurl's inflate_stream could call zlib's inflate even when no bytes
 were available, causing inflate to return Z_BUF_ERROR, and then
 inflate_stream would treat that as a hard error and return
 CURLE_BAD_CONTENT_ENCODING.
 
 According to the zlib FAQ, Z_BUF_ERROR is not fatal.
 
 This bug would happen randomly since packet sizes are arbitrary. A test
 of 10,000 transfers had 55 fail (ie 0.55%).
 
 Ref: https://zlib.net/zlib_faq.html#faq05
 
 Closes https://github.com/curl/curl/pull/2060

Patrick Monnerat (7 Nov 2017)
- content_encoding: do not write 0 length data

Daniel Stenberg (6 Nov 2017)
- fnmatch: remove dead code
 
 There was a duplicate check for backslashes in the setcharset()
 function.
 
 Coverity CID 1420611

- url: remove unncessary NULL-check
 
 Since 'conn' won't be NULL in there and we also access the pointer in
 there without the check.
 
 Coverity CID 1420610

Viktor Szakats (6 Nov 2017)
- src/Makefile.m32: fix typo in brotli lib customization
 
 Ref cc1f4436099decb9d1a7034b2bb773a9f8379d31

- Makefile.m32: allow to customize brotli libs
 
 It adds the ability to link against static brotli libs.
 
 Also fix brotli include path.

Patrick Monnerat (5 Nov 2017)
- travis: add a job with brotli enabled

- [Viktor Szakats brought this change]

 Makefile.m32: add brotli support

- HTTP: implement Brotli content encoding
 
 This uses the brotli external library (https://github.com/google/brotli).
 Brotli becomes a feature: additional curl_version_info() bit and
 structure fields are provided for it and CURLVERSION_NOW bumped.
 
 Tests 314 and 315 check Brotli content unencoding with correct and
 erroneous data.
 
 Some tests are updated to accomodate with the now configuration dependent
 parameters of the Accept-Encoding header.

- HTTP: support multiple Content-Encodings
 
 This is implemented as an output streaming stack of unencoders, the last
 calling the client write procedure.
 
 New test 230 checks this feature.
 
 Bug: https://github.com/curl/curl/pull/2002
 Reported-By: Daniel Bankhead

Jay Satiro (4 Nov 2017)
- url: remove arg value check from CURLOPT_SSH_AUTH_TYPES
 
 Since CURLSSH_AUTH_ANY (aka CURLSSH_AUTH_DEFAULT) is ~0 an arg value
 check on this option is incorrect; we have to accept any value.
 
 Prior to this change since f121575 (7.56.1+) CURLOPT_SSH_AUTH_TYPES
 erroneously rejected CURLSSH_AUTH_ANY with CURLE_BAD_FUNCTION_ARGUMENT.
 
 Bug: https://github.com/curl/curl/commit/f121575#commitcomment-25347120

Daniel Stenberg (4 Nov 2017)
- ntlm: avoid malloc(0) for zero length passwords
 
 It triggers an assert() when built with memdebug since malloc(0) may
 return NULL *or* a valid pointer.
 
 Detected by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4054
 
 Assisted-by: Max Dymond
 Closes #2054

- RELEASE-NOTES: synced with ee8016b3d

- curl: speed up handling of many URLs
 
 By properly keeping track of the last entry in the list of URLs/uploads
 to handle, curl now avoids many meaningless traverses of the list which
 speeds up many-URL handling *MASSIVELY* (several magnitudes on 100K
 URLs).
 
 Added test 1291, to verify that it doesn't take ages - but we don't have
 any detection of "too slow" command in the test suite.
 
 Reported-by: arainchik on github
 Fixes #1959
 Closes #2052

- curl: pass through [] in URLs instead of calling globbing error
 
 Assisted-by: Per Lundberg
 Fixes #2044
 Closes #2046
 Closes #2048

- CURLOPT_INFILESIZE: accept -1
 
 Regression since f121575
 
 Reported-by: Petr Voytsik
 Fixes #2047

Jay Satiro (2 Nov 2017)
- url: fix CURLOPT_DNS_CACHE_TIMEOUT arg value check to allow -1
 
 Prior to this change since f121575 (7.56.1+) CURLOPT_DNS_CACHE_TIMEOUT
 erroneously rejected -1 with CURLE_BAD_FUNCTION_ARGUMENT.

Dan Fandrich (1 Nov 2017)
- http2: Fixed OOM handling in upgrade request
 
 This caused the torture tests on test 1800 to fail.

- tests: Fixed torture tests on tests 556 and 650
 
 Test cleanup after OOM wasn't being consistently performed.

Daniel Stenberg (1 Nov 2017)
- CURLOPT_MAXREDIRS: allow -1 as a value
 
 ... which is valid according to documentation. Regression since
 f121575c0b5f.
 
 Verified now in test 501.
 
 Reported-by: cbartl on github
 Fixes #2038
 Closes #2039

- include: remove conncache.h inclusion from where its not needed

Jay Satiro (1 Nov 2017)
- url: fix CURLOPT_POSTFIELDSIZE arg value check to allow -1
 
 .. also add same arg value check to CURLOPT_POSTFIELDSIZE_LARGE.
 
 Prior to this change since f121575 (7.56.1+) CURLOPT_POSTFIELDSIZE
 erroneously rejected -1 value with CURLE_BAD_FUNCTION_ARGUMENT.
 
 Bug: https://curl.haxx.se/mail/lib-2017-11/0000.html
 Reported-by: Andrew Lambert

Daniel Stenberg (31 Oct 2017)
- cookie: avoid NULL dereference
 
 ... when expiring old cookies.
 
 Reported-by: Pavel Gushchin
 Fixes #2032
 Closes #2035

Marcel Raad (30 Oct 2017)
- memdebug: use send/recv signature for curl_dosend/curl_dorecv
 
 This avoids build errors and warnings caused by implicit casts.
 
 Closes https://github.com/curl/curl/pull/2031

Daniel Stenberg (30 Oct 2017)
- [Juro Bystricky brought this change]

 mkhelp.pl: support reproducible build
 
 Do not generate line with the current date, such as:
 
 * Generation time: Tue Oct-24 18:01:41 2017
 
 This will improve reproducibility. The generated string is only
 part of a comment, so there should be no adverse consequences.
 
 Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
 
 closes #2026

Dan Fandrich (30 Oct 2017)
- runtests.pl: Fixed typo in message

Daniel Stenberg (30 Oct 2017)
- curlx: the timeval functions are no longer provided as curlx_*
 
 Pointed-out-by: Dmitri Tikhonov
 Bug: #2034

- select: update comments
 
 s/curlx_tvnow/Curl_now

- INTERNALS: remove curlx_tv* functions no longer provided

- [Dmitri Tikhonov brought this change]

 timeval: use mach time on MacOS
 
 If clock_gettime() is not supported, use mach_absolute_time() on MacOS.
 
 closes #2033

monnerat (29 Oct 2017)
- [Patrick Monnerat brought this change]

 cli tool: improve ";type=" handling in -F option arguments

- [Patrick Monnerat brought this change]

 cli tool: in -F option arg, comma is a delimiter for files only
 
 Also upgrade test 1133 to cover this case and clarify man page about
 form data quoting.
 
 Bug: https://github.com/curl/curl/issues/2022
 Reported-By: omau on github

Daniel Stenberg (29 Oct 2017)
- timeleft: made two more users of Curl_timeleft use timediff_t

Jakub Zakrzewski (28 Oct 2017)
- cmake: Export libcurl and curl targets to use by other cmake projects
 
 The config files define curl and libcurl targets as imported targets
 CURL::curl and CURL::libcurl. For backward compatibility with CMake-
 provided find-module the CURL_INCLUDE_DIRS and CURL_LIBRARIES are
 also set.
 
 Closes #1879

Daniel Stenberg (28 Oct 2017)
- RELEASE-NOTES: synced with f20cbac97

- [Florin brought this change]

 auth: Added test cases for RFC7616
 
 Updated docs to include support for RFC7616
 
 Signed-off-by: Florin <petriuc.florin@gmail.com>
 
 Closes #1934

- [Florin brought this change]

 auth: add support for RFC7616 - HTTP Digest access authentication
 
 Signed-off-by: Florin <petriuc.florin@gmail.com>

- [Daniel Bankhead brought this change]

 TODO: support multiple Content-Encodings
 
 Closes #2002

- ROADMAP: cleanup
 
 Removed done stuff. Removed entries no longer considered for the near
 term.

- [Magicansk brought this change]

 ROADMAP.md: spelling fixes
 
 Closes #2028

- Curl_timeleft: change return type to timediff_t
 
 returning 'time_t' is problematic when that type is unsigned and we
 return values less than zero to signal "already expired", used in
 several places in the code.
 
 Closes #2021

- appveyor: add a win32 build

- setopt: fix CURLOPT_SSH_AUTH_TYPES option read
 
 Regression since f121575c0b5f
 
 Reported-by: Rob Cotrone

Marcel Raad (27 Oct 2017)
- resolvers: only include anything if needed
 
 This avoids warnings about unused stuff.
 
 Closes https://github.com/curl/curl/pull/2023

Daniel Stenberg (27 Oct 2017)
- HELP-US: rename the subtitle too since the label is changed
 
 "PR-welcome" was the former name.

- curl_setup.h: oops, shorten the too long line

- [Martin Storsjo brought this change]

 curl_setup: Improve detection of CURL_WINDOWS_APP
 
 If WINAPI_FAMILY is defined, it should be safe to try to include
 winapifamily.h to check what the define evaluates to.
 
 This should fix detection of CURL_WINDOWS_APP if building with
 _WIN32_WINNT set to 0x0600.
 
 Closes #2025

Jay Satiro (26 Oct 2017)
- transfer: Fix chunked-encoding upload bug
 
 - When uploading via chunked-encoding don't compare file size to bytes
 sent to determine whether the upload has finished.
 
 Chunked-encoding adds its own overhead which why the bytes sent is not
 equal to the file size. Prior to this change if a file was uploaded in
 chunked-encoding and its size was known it was possible that the upload
 could end prematurely without sending the final few chunks. That would
 result in a server hang waiting for the remaining data, likely followed
 by a disconnect.
 
 The scope of this bug is limited to some arbitrary file sizes which have
 not been determined. One size that triggers the bug is 475020.
 
 Bug: https://github.com/curl/curl/issues/2001
 Reported-by: moohoorama@users.noreply.github.com
 
 Closes https://github.com/curl/curl/pull/2010

Daniel Stenberg (26 Oct 2017)
- timeval: make timediff_t also work on 32bit windows
 
 ... by using curl_off_t for the typedef if time_t is larger than 4
 bytes.
 
 Reported-by: Gisle Vanem
 Bug: https://github.com/curl/curl/commit/b9d25f9a6b3ca791385b80a6a3c3fa5ae113e1e0#co
 mmitcomment-25205058
 Closes #2019

- curl_fnmatch: return error on illegal wildcard pattern
 
 ... instead of doing an infinite loop!
 
 Added test 1162 to verify.
 
 Reported-by: Max Dymond
 Fixes #2015
 Closes #2017

- [Max Dymond brought this change]

 wildcards: don't use with non-supported protocols
 
 Fixes timeouts in the fuzzing tests for non-FTP protocols.
 
 Closes #2016

- [Max Dymond brought this change]

 multi: allow table handle sizes to be overridden
 
 Allow users to specify their own hash define for
 CURL_CONNECTION_HASH_SIZE so that both values can be overridden.
 
 Closes #1982

- time: rename Curl_tvnow to Curl_now
 
 ... since the 'tv' stood for timeval and this function does not return a
 timeval struct anymore.
 
 Also, cleaned up the Curl_timediff*() functions to avoid typecasts and
 clean up the descriptive comments.
 
 Closes #2011

- ftplistparser: follow-up cleanup to remove PL_ERROR()

- [Max Dymond brought this change]

 ftplistparser: free off temporary memory always
 
 When using the FTP list parser, ensure that the memory that's
 allocated is always freed.
 
 Detected by OSS-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3682
 Closes #2013

- timediff: return timediff_t from the time diff functions
 
 ... to cater for systems with unsigned time_t variables.
 
 - Renamed the functions to curlx_timediff and Curl_timediff_us.
 
 - Added overflow protection for both of them in either direction for
 both 32 bit and 64 bit time_ts
 
 - Reprefixed the curlx_time functions to use Curl_*
 
 Reported-by: Peter Piekarski
 Fixes #2004
 Closes #2005

- [Paul Howarth brought this change]

 libtest: Add required test libraries for lib1552 and lib1553
 
 They use $(TESTUTIL) and thus should use $(TESTUTIL_LIBS) too.
 
 This fixes build failures on Fedora 13.
 
 Closes #2006

- [Alessandro Ghedini brought this change]

 libcurl-tutorial.3: fix typo
 
 closes #2008

Alessandro Ghedini (23 Oct 2017)
- curl_mime_filedata.3: fix typos

Daniel Stenberg (23 Oct 2017)
- RELEASE-NOTES: clean slate towards 7.57.0

- [Max Dymond brought this change]

 travis: exit if any steps fail
 
 We don't expect any steps to fail in travis. Exit the script if they do.
 
 Closes #1966

Version 7.56.1 (23 Oct 2017)

Daniel Stenberg (23 Oct 2017)
- RELEASE-NOTES: 7.56.1

- THANKS: update at 7.56.1 release time

- [Jon DeVree brought this change]

 mk-ca-bundle: Remove URL for aurora
 
 Aurora is no longer used by Mozilla
 https://hacks.mozilla.org/2017/04/simplifying-firefox-release-channels/

- [Jon DeVree brought this change]

 mk-ca-bundle: Fix URL for NSS
 
 The 'tip' is the most recent branch committed to, this should be
 'default' like the URLs for the browser are.
 
 Closes #1998

- imap: if a FETCH response has no size, don't call write callback
 
 CVE-2017-1000257
 
 Reported-by: Brian Carpenter and 0xd34db347
 Also detected by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3586

- ftp: reject illegal IP/port in PASV 227 response
 
 ... by using range checks. Among other things, this avoids an undefined
 behavior for a left shift that could happen on negative or very large
 values.
 
 Closes #1997
 
 Detected by OSS-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3694

Patrick Monnerat (20 Oct 2017)
- test653: check reuse of easy handle after mime data change
 
 See issue #1999

- mime: do not reuse previously computed multipart size
 
 The contents might have changed: size must be recomputed.
 
 Reported-by: moteus on github
 Fixes #1999

- test308: disable if MultiSSL feature enabled
 
 Even if OpenSSL is enabled, it might not be the default backend when
 multi-ssl is enabled, causing the test to fail.

- runtests: support MultiSSL client feature

- vtls: change struct Curl_ssl `close' field name to `close_one'.
 
 On OS/400, `close' is an ASCII system macro that corrupts the code if
 not used in a context not targetting the close() system API.

- os400: add missing symbols in config file.
 
 Also adjust makefile to renamed files and warn about installation dirs mix-up.

- test652: curl_mime_data + base64 encoder with large contents

- mime: limit bas64-encoded lines length to 76 characters

Daniel Stenberg (16 Oct 2017)
- RELEASE-NOTES: synced with f121575c0

- setopt: range check most long options
 
 ... filter early instead of risking "funny values" having to be dealt
 with elsewhere.

- setopt: avoid integer overflows when setting millsecond values
 
 ... that are multiplied by 1000 when stored.
 
 For 32 bit long systems, the max value accepted (2147483 seconds) is >
 596 hours which is unlikely to ever be set by a legitimate application -
 and previously it didn't work either, it just caused undefined behavior.
 
 Also updated the man pages for these timeout options to mention the
 return code.
 
 Closes #1938

Viktor Szakats (15 Oct 2017)
- makefile.m32: allow to override gcc, ar and ranlib
 
 Allow to ovverride certain build tools, making it possible to
 use LLVM/Clang to build curl. The default behavior is unchanged.
 To build with clang (as offered by MSYS2), these settings can
 be used:
 
 CURL_CC=clang
 CURL_AR=llvm-ar
 CURL_RANLIB=llvm-ranlib
 
 Closes https://github.com/curl/curl/pull/1993

- ldap: silence clang warning
 
 Use memset() to initialize a structure to avoid LLVM/Clang warning:
 ldap.c:193:39: warning: missing field 'UserLength' initializer [-Wmissing-field-initializers]
 
 Closes https://github.com/curl/curl/pull/1992

Daniel Stenberg (14 Oct 2017)
- runtests: use valgrind for torture as well
 
 NOTE: it makes them terribly slow. I recommend only using valgrind for
 specific torture tests or using lots of patience.

- memdebug: trace send, recv and socket
 
 ... to allow them to be included in torture tests too.
 
 closes #1980

- configure: remove the C++ compiler check
 
 ... we used it only for the fuzzer, which we now have in a separate git
 repo.
 
 Closes #1990

Patrick Monnerat (13 Oct 2017)
- mime: do not call failf() if easy handle is NULL.

Daniel Stenberg (13 Oct 2017)
- test651: curl_formadd with huge COPYCONTENTS

- mime: fix the content reader to handle >16K data properly
 
 Reported-by: Jeroen Ooms
 Closes #1988

Patrick Monnerat (12 Oct 2017)
- mime: keep "text/plain" content type if user-specified.
 
 Include test cases in 554, 587, 650.
 
 Fixes https://github.com/curl/curl/issues/1986

- cli tool: use file2memory() to buffer stdin in -F option.
 
 Closes PR https://github.com/curl/curl/pull/1985

- cli tool: reimplement stdin buffering in -F option.
 
 If stdin is not a regular file, its content is memory-buffered to enable
 a possible data "rewind".
 In all cases, stdin data size is determined before real use to avoid
 having an unknown part's size.
 
 --libcurl generated code is left as an unbuffered stdin fread/fseek callback
 part with unknown data size.
 
 Buffering is not supported in deprecated curl_formadd() API.

Daniel Stenberg (12 Oct 2017)
- winbuild/BUILD.WINDOWS.txt: mention WITH_NGHTTP2

- HELP-US: the label "PR-welcome" is now renamed to "help wanted"
 
 following the new github "standard"

- RELEASE-NOTES: synced with 5505df7d2

Jay Satiro (11 Oct 2017)
- [Artak Galoyan brought this change]

 url: Update current connection SSL verify params in setopt
 
 Now VERIFYHOST, VERIFYPEER and VERIFYSTATUS options change during active
 connection updates the current connection's (i.e.'connectdata'
 structure) appropriate ssl_config (and ssl_proxy_config) structures
 variables, making these options effective for ongoing connection.
 
 This functionality was available before and was broken by the
 following change:
 "proxy: Support HTTPS proxy and SOCKS+HTTP(s)"
 CommitId: cb4e2be7c6d42ca0780f8e0a747cecf9ba45f151.
 
 Bug: https://github.com/curl/curl/issues/1941
 
 Closes https://github.com/curl/curl/pull/1951

Daniel Stenberg (11 Oct 2017)
- [David Benjamin brought this change]

 openssl: don't use old BORINGSSL_YYYYMM macros
 
 Those were temporary things we'd add and remove for our own convenience
 long ago. The last few stayed around for too long as an oversight but
 have since been removed. These days we have a running
 BORINGSSL_API_VERSION counter which is bumped when we find it
 convenient, but 2015-11-19 was quite some time ago, so just check
 OPENSSL_IS_BORINGSSL.
 
 Closes #1979

- test950; verify SMTP with custom request

- ftpserver: support case insensitive commands

- smtp_done: free data before returning (on send failure)
 
 ... as otherwise it could leak that memory.
 
 Detected by OSS-fuzz:
 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3600
 
 Assisted-by: Max Dymond
 Closes #1977

- FTP: URL decode path for dir listing in nocwd mode
 
 Reported-by: Zenju on github
 
 Test 244 added to verify
 Fixes #1974
 Closes #1976

- test298: verify --ftp-method nowcwd with URL encoded path
 
 Ref: #1974

- CURLOPT_XFERINFODATA.3: fix duplicate see also

- CURLOPT_NOPROGRESS.3: also refer to xferinfofunction

- FAQ: s/CURLOPT_PROGRESSFUNCTION/CURLOPT_XFERINFOFUNCTION

- openssl: enable PKCS12 support for !BoringSSL
 
 Enable PKCS12 for all non-boringssl builds without relying on configure
 or cmake checks.
 
 Bug: https://curl.haxx.se/mail/lib-2017-10/0007.html
 Reported-by: Christian Schmitz
 Closes #1948

- [Kristiyan Tsaklev brought this change]

 curl: don't pass semicolons when parsing Content-Disposition
 
 Test 1422 updated to verify.
 
 Closes #1964

Patrick Monnerat (9 Oct 2017)
- mime: properly unbind mime structure in curl_mime_free().
 
 This allows freeing a mime structure bound to the easy handle before
 curl_easy_cleanup().
 
 Fixes #1970.

Daniel Stenberg (9 Oct 2017)
- RTSP: avoid integer overflow on funny RTSP response
 
 ... like a very large non-existing RTSP version number.
 
 Added test 577 to verify.
 
 Detected by OSS-fuzz.
 Closes #1969

Patrick Monnerat (8 Oct 2017)
- ftpserver: properly reset $ftptargetdir.

- test643: verify curl_mime_subparts() rejects cyclic additions.

- mime: refuse to add subparts to one of their own descendants.
 
 Reported-by: Alexey Melnichuk
 Fixes #1962

- mime: avoid resetting a part's encoder when part's contents change.

- mime: improve unbinding top multipart from easy handle.
 
 Also avoid dangling pointers in referencing parts.

Daniel Stenberg (8 Oct 2017)
- RELEASE-NOTES: synced with a4c1c75da30af1

- curlver.h: next expected release is 7.57.0

Patrick Monnerat (8 Oct 2017)
- mime: be tolerant about setting twice the same header list in a part.

- docs: clarify form/mime usage of non-regular data files.

Daniel Stenberg (8 Oct 2017)
- Revert "multi_done: wait for name resolve to finish if still ongoing"
 
 This reverts commit f3e03f6c0ac52a1bf396e03f7d7e9b5b3b7165fe.
 
 Caused memory leaks in the fuzzer, needs to be done differently.
 
 Disable test 1553 for now too, as it causes memory leaks without this
 commit!

- remove_handle: call multi_done() first, then clear dns cache pointer
 
 Closes #1960

- multi_done: wait for name resolve to finish if still ongoing
 
 ... as we must clean up memory.

- pingpong: return error when trying to send without connection
 
 When imap_done() got called before a connection is setup, it would try
 to "finish up" and dereffed a NULL pointer.
 
 Test case 1553 managed to reproduce. I had to actually use a host name
 to try to resolve to slow it down, as using the normal local server IP
 will make libcurl get a connection in the first curl_multi_perform()
 loop and then the bug doesn't trigger.
 
 Fixes #1953
 Assisted-by: Max Dymond

Dan Fandrich (6 Oct 2017)
- tests: added flaky keyword to tests 587 and 644
 
 These are around 5% flaky in my Linux x86 autobuilds.

Marcel Raad (6 Oct 2017)
- vtls: fix warnings with --disable-crypto-auth
 
 When CURL_DISABLE_CRYPTO_AUTH is defined, Curl_none_md5sum's parameters
 are not used.

Daniel Stenberg (6 Oct 2017)
- multi_cleanup: call DONE on handles that never got that
 
 ... fixes a memory leak with at least IMAP when remove_handle is never
 called and the transfer is abruptly just abandoned early.
 
 Test 1552 added to verify
 
 Detected by OSS-fuzz
 Assisted-by: Max Dymond
 Closes #1954

- [Benbuck Nason brought this change]

 strtoofft: Remove extraneous null check
 
 Fixes #1950: curlx_strtoofft() doesn't fully protect against null 'str'
 argument.
 
 Closes #1952

- openssl: fix build without HAVE_OPAQUE_EVP_PKEY
 
 Reported-by: Javier Sixto
 Fixes #1955
 Closes #1956

Viktor Szakats (6 Oct 2017)
- lib/config-win32.h: let SMB/SMBS be enabled with OpenSSL/NSS
 
 The source code is now prepared to handle the case when both
 Win32 Crypto and OpenSSL/NSS crypto backends are enabled
 at the same time, making it now possible to enable `USE_WIN32_CRYPTO`
 whenever the targeted Windows version supports it. Since this
 matches the minimum Windows version supported by curl
 (Windows 2000), enable it unconditionally for the Win32 platform.
 
 This in turn enables SMB (and SMBS) protocol support whenever
 Win32 Crypto is available, regardless of what other crypto backends
 are enabled.
 
 Ref: https://github.com/curl/curl/pull/1840#issuecomment-325682052
 
 Closes https://github.com/curl/curl/pull/1943

Daniel Stenberg (5 Oct 2017)
- build: fix --disable-crypto-auth
 
 Reported-by: Wyatt O'Day
 Fixes #1945
 Closes #1947

Jay Satiro (5 Oct 2017)
- [Nick Zitzmann brought this change]

 darwinssl: add support for TLSv1.3
 
 Closes https://github.com/curl/curl/pull/1794

Daniel Stenberg (4 Oct 2017)
- [Felix Kaiser brought this change]

 docs: fix typo in curl_mime_data_cb man page
 
 Closes #1946

Viktor Szakats (4 Oct 2017)
- lib/Makefile.m32: allow customizing dll suffixes
 
 - New `CURL_DLL_SUFFIX` envvar will add a suffix to the generated
 libcurl dll name. Useful to add `-x64` to 64-bit builds so that
 it can live in the same directory as the 32-bit one. By default
 this is empty.
 
 - New `CURL_DLL_A_SUFFIX` envvar to customize the suffix of the
 generated import library (implib) for libcurl .dll. It defaults
 to `dll`, and it's useful to modify that to `.dll` to have the
 standard naming scheme for mingw-built .dlls, i.e. `libcurl.dll.a`.
 
 Closes https://github.com/curl/curl/pull/1942

Daniel Stenberg (4 Oct 2017)
- [Max Dymond brought this change]

 fuzzer: move to using external curl-fuzzer
 
 Use the external curl-fuzzer repository for fuzzing.
 
 Closes #1923

- failf: skip the sprintf() if there are no consumers
 
 Closes #1936

- ftp: UBsan fixup 'pointer index expression overflowed'
 
 Closes #1939

- RELEASE-PROCEDURE: update the release schedule

Version 7.56.0 (4 Oct 2017)

Daniel Stenberg (4 Oct 2017)
- RELEASE-NOTES: curl 7.56.0

- THANKS: added new 7.56.0 contributors

Jay Satiro (4 Oct 2017)
- build-openssl.bat: Warn OpenSSL 1.1.0 not yet supported
 
 Ref: https://github.com/curl/curl/issues/1002

Michael Kaufmann (3 Oct 2017)
- idn: fix source code comment

- vtls: compare and clone ssl configs properly
 
 Compare these settings in Curl_ssl_config_matches():
 - verifystatus (CURLOPT_SSL_VERIFYSTATUS)
 - random_file (CURLOPT_RANDOM_FILE)
 - egdsocket (CURLOPT_EGDSOCKET)
 
 Also copy the setting "verifystatus" in Curl_clone_primary_ssl_config(),
 and copy the setting "sessionid" unconditionally.
 
 This means that reusing connections that are secured with a client
 certificate is now possible, and the statement "TLS session resumption
 is disabled when a client certificate is used" in the old advisory at
 https://curl.haxx.se/docs/adv_20170419.html is obsolete.
 
 Reviewed-by: Daniel Stenberg
 
 Closes #1917

- proxy: read the "no_proxy" variable only if necessary
 
 Reviewed-by: Daniel Stenberg
 
 Closes #1919

Patrick Monnerat (3 Oct 2017)
- libcurl-tutorial: add casts in example to avoid compilation warnings.

Daniel Stenberg (3 Oct 2017)
- examples: bring back curl_formadd-using examples
 
 ... now with a -formadd suffix. While the new mime API is introduced in
 7.56.0 we must acknowledge that lots of users can't upgrade their curl
 versions immediately.

- test1153: verify quoted double-qoutes in PWD response

- FTP: zero terminate the entry path even on bad input
 
 ... a single double quote could leave the entry path buffer without a zero
 terminating byte. CVE-2017-1000254
 
 Test 1152 added to verify.
 
 Reported-by: Max Dymond
 Bug: https://curl.haxx.se/docs/adv_20171004.html

Jay Satiro (2 Oct 2017)
- [Sergei Nikulov brought this change]

 cmake: disable tests and man generation if perl/nroff not found
 
 Fixes https://github.com/curl/curl/issues/1500
 Reported-by: Jay Satiro
 
 Fixes https://github.com/curl/curl/pull/1662
 Assisted-by: Tom Seddon
 Assisted-by: dpull@users.noreply.github.com
 Assisted-by: elelel@users.noreply.github.com
 
 Closes https://github.com/curl/curl/pull/1924

Patrick Monnerat (2 Oct 2017)
- libcurl-tutorial: fix two typos.

- TODO: remove deprecated form API items.

- libcurl-tutorial: describe MIME API and deprecate form API.
 
 Include a guide to form/mime API conversion.

Daniel Stenberg (30 Sep 2017)
- cookie: fix memory leak if path was set twice in header
 
 ... this will let the second occurance override the first.
 
 Added test 1161 to verify.
 
 Reported-by: Max Dymond
 Fixes #1932
 Closes #1933

Dan Fandrich (30 Sep 2017)
- test650: Use variable replacement to set the host address and port
 
 Otherwise, the test fails when the -b test option is used to set a
 different test port range.

- Set and use more necessary options when some protocols are disabled
 
 When curl and libcurl are built with some protocols disabled, they stop
 setting and receiving some options that don't make sense with those
 protocols. In particular, when HTTP is disabled many options aren't set
 that are used only by HTTP. However, some options that appear to be
 HTTP-only are actually used by other protocols as well (some despite
 having HTTP in the name) and should be set, but weren't. This change now
 causes some of these options to be set and used for more (or for all)
 protocols. In particular, this fixes tests 646 through 649 in an
 HTTP-disabled build, which use the MIME API in the mail protocols.

Daniel Stenberg (29 Sep 2017)
- test1160: verifies cookie leak for large cookies
 
 The fix done in 20ea22ff735

- cookie: fix memory leak on oversized rejection
 
 Regression brought by 2bc230de63b
 
 Detected by OSS-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3513
 Assisted-by: Max Dymond
 
 Closes #1930

- [Anders Bakken brought this change]

 connect: fix race condition with happy eyeballs timeout
 
 The timer should be started after conn->connecttime is set. Otherwise
 the timer could expire without this condition being true:
 
 /* should we try another protocol family? */
 if(i == 0 && conn->tempaddr[1] == NULL &&
 curlx_tvdiff(now, conn->connecttime) >= HAPPY_EYEBALLS_TIMEOUT) {
 
 Ref: #1928

Michael Kaufmann (28 Sep 2017)
- docs: link CURLOPT_CONNECTTIMEOUT and CURLOPT_CONNECTTIMEOUT_MS
 
 Closes #1922

- docs: clarify the use of environment variables for proxy
 
 Closes #1921

- http: add custom empty headers to repeated requests
 
 Closes #1920

- reuse_conn: don't copy flags that are known to be equal
 
 A connection can only be reused if the flags "conn_to_host" and
 "conn_to_port" match. Therefore it is not necessary to copy these flags
 in reuse_conn().
 
 Closes #1918

Daniel Stenberg (27 Sep 2017)
- curl.h: include <sys/select.h> on cygwin too
 
 When building with -std=c++14 on cygwin, this header won't be
 automatically included as it otherwise is.
 
 The <sys/select.h> include decision should ideally be reversed and be
 avoided where that header file doesn't exist.
 
 Reported-by: Ian Fette
 Fixes #1925

- RELEASE-NOTES: synced with d8ab5dc50

Michael Kaufmann (24 Sep 2017)
- tests: adjust .gitignore for new tests

Jay Satiro (23 Sep 2017)
- ntlm: move NTLM_NEEDS_NSS_INIT define into core NTLM header
 
 .. and include the core NTLM header in all NTLM-related source files.
 
 Follow up to 6f86022. Since then http_ntlm checks NTLM_NEEDS_NSS_INIT
 but did not include vtls.h where it was defined.
 
 Closes https://github.com/curl/curl/pull/1911

Daniel Stenberg (23 Sep 2017)
- file_range: avoid integer overflow when figuring out byte range
 
 When trying to bump the value with one and the value is already at max,
 it causes an integer overflow.
 
 Closes #1908
 Detected by oss-fuzz:
 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3465
 
 Assisted-by: Max Dymond

Michael Kaufmann (23 Sep 2017)
- tests: fix a compiler warning in test 643

Jay Satiro (23 Sep 2017)
- symbols-in-versions: fix CURLSSLSET_NO_BACKENDS entry
 
 - Use spaces instead of tabs as the delimiter.
 
 Follow up to 7c52b12 which added the entry. The entry had used tabs but
 the symbol-scan parser doesn't recognize tabs and would fail the symbol.

Viktor Szakats (22 Sep 2017)
- metalink: fix NSS issue in MultiSSL builds
 
 In MultiSSL mode (i.e. when more than one SSL backend is compiled
 in), we cannot use the compile time flag `USE_NSS` as indicator that
 the NSS backend is in use. As far as Metalink is concerned, the SSL
 backend is only used for MD5, SHA-1 and SHA-256 calculations,
 therefore one of the available SSL backends is selected at compile
 time, in a strict order of preference.
 
 Let's introduce a new `HAVE_NSS_CONTEXT` constant that can be used
 to determine whether the SSL backend used for Metalink is the NSS
 backend, and use that to guard the code that wants to de-initialize
 the NSS-specific data structure.
 
 Ref: https://github.com/curl/curl/pull/1848

- ntlm: use strict order for SSL backend #if branches
 
 With the recently introduced MultiSSL support multiple SSL backends
 can be compiled into cURL That means that now the order of the SSL
 
 One option would be to use the same SSL backend as was configured
 via `curl_global_sslset()`, however, NTLMv2 support would appear
 to be available only with some SSL backends. For example, when
 eb88d778e (ntlm: Use Windows Crypt API, 2014-12-02) introduced
 support for NTLMv1 using Windows' Crypt API, it specifically did
 *not* introduce NTLMv2 support using Crypt API at the same time.
 
 So let's select one specific SSL backend for NTLM support when
 compiled with multiple SSL backends, using a priority order such
 that we support NTLMv2 even if only one compiled-in SSL backend can
 be used for that.
 
 Ref: https://github.com/curl/curl/pull/1848

Daniel Stenberg (22 Sep 2017)
- symbols-in-versions: add CURLSSLSET_NO_BACKENDS
 
 ...fixup from b8e0fe19ec

- imap: quote atoms properly when escaping characters
 
 Updates test 800 to verify
 
 Fixes #1902
 Closes #1903

- tests: make the imap server not verify user+password
 
 ... as the test cases themselves do that and it makes it easier to add
 crazy test cases.
 
 Test 800 updated to use user name + password that need quoting.
 
 Test 856 updated to trigger an auth fail differently.
 
 Ref: #1902

- vtls: provide curl_global_sslset() even in non-SSL builds
 
 ... it just returns error:
 
 Bug: https://github.com/curl/curl/commit/1328f69d53f2f2e937696ea954c480412b018451#commitcomment-24470367
 Reported-by: Marcel Raad
 
 Closes #1906

Patrick Monnerat (22 Sep 2017)
- form/mime: field names are not allowed to contain zero-valued bytes.
 
 Also suppress length argument of curl_mime_name() (names are always
 zero-terminated).

Daniel Stenberg (21 Sep 2017)
- [Dirk Feytons brought this change]

 openssl: only verify RSA private key if supported
 
 In some cases the RSA key does not support verifying it because it's
 located on a smart card, an engine wants to hide it, ...
 Check the flags on the key before trying to verify it.
 OpenSSL does the same thing internally; see ssl/ssl_rsa.c
 
 Closes #1904

Marcel Raad (21 Sep 2017)
- examples/post-callback: use long for CURLOPT_POSTFIELDSIZE
 
 Otherwise, typecheck-gcc.h warns on MinGW-w64.

Patrick Monnerat (20 Sep 2017)
- mime: rephrase the multipart output state machine (#1898) ...
 
 ... in hope coverity will like it much.

- mime: fix an explicit null dereference (#1899)

Daniel Stenberg (20 Sep 2017)
- curl: check fseek() return code and bail on error
 
 Detected by coverity. CID 1418137.

- smtp: fix memory leak in OOM
 
 Regression since ce0881edee
 
 Coverity CID 1418139 and CID 1418136 found it, but it was also seen in
 torture testing.

- RELEASE-NOTES: synced with 5fe85587c

- [Pavel P brought this change]

 cookies: use lock when using CURLINFO_COOKIELIST
 
 Closes #1896

- [Max Dymond brought this change]

 ossfuzz: changes before merging the generated corpora
 
 Before merging in the oss-fuzz corpora from Google, there are some changes
 to the fuzzer.
 - Add a read corpus script, to display corpus files nicely.
 - Change the behaviour of the fuzzer so that TLV parse failures all now
 go down the same execution paths, which should reduce the size of the
 corpora.
 - Make unknown TLVs a failure to parse, which should decrease the size
 of the corpora as well.
 
 Closes #1881

- mime:escape_string minor clarification change
 
 ... as it also removes a warning with old gcc versions.
 
 Bug: https://curl.haxx.se/mail/lib-2017-09/0049.html
 Reported-by: Ben Greear

- [Max Dymond brought this change]

 ossfuzz: don't write out to stdout
 
 Don't make the fuzzer write out to stdout - instead write some of the
 contents to a memory block so we exercise the data output code but
 quietly.
 
 Closes #1885

- cookies: reject oversized cookies
 
 ... instead of truncating them.
 
 There's no fixed limit for acceptable cookie names in RFC 6265, but the
 entire cookie is said to be less than 4096 bytes (section 6.1). This is
 also what browsers seem to implement.
 
 We now allow max 5000 bytes cookie header. Max 4095 bytes length per
 cookie name and value. Name + value together may not exceed 4096 bytes.
 
 Added test 1151 to verify
 
 Bug: https://curl.haxx.se/mail/lib-2017-09/0062.html
 Reported-by: Kevin Smith
 
 Closes #1894

- travis: on mac, don't install openssl or libidn
 
 - openssl is already installed and causes warnings when trying to
 install again
 
 - libidn isn't used these days, and homebrew doesn't seem to have a
 libidn2 package to replace with easily
 
 Closes #1895

- curl: make str2udouble not return values on error
 
 ... previously it would store a return value even when it returned
 error, which could make the value get used anyway!
 
 Reported-by: Brian Carpenter
 Closes #1893

Jay Satiro (18 Sep 2017)
- socks: fix incorrect port number in SOCKS4 error message
 
 Prior to this change it appears the SOCKS5 port parsing was erroneously
 used for the SOCKS4 error message, and as a result an incorrect port
 would be shown in the error message.
 
 Bug: https://github.com/curl/curl/issues/1892
 Reported-by: Jackarain@users.noreply.github.com

- [Marc Aldorasi brought this change]

 schannel: Support partial send for when data is too large
 
 Schannel can only encrypt a certain amount of data at once. Instead of
 failing when too much data is to be sent at once, send as much data as
 we can and let the caller send the remaining data by calling send again.
 
 Bug: https://curl.haxx.se/mail/lib-2014-07/0033.html
 
 Closes https://github.com/curl/curl/pull/1890

- [David Benjamin brought this change]

 openssl: add missing includes
 
 lib/vtls/openssl.c uses OpenSSL APIs from BUF_MEM and BIO APIs. Include
 their headers directly rather than relying on other OpenSSL headers
 including things.
 
 Closes https://github.com/curl/curl/pull/1891

Daniel Stenberg (15 Sep 2017)
- conversions: fix several compiler warnings

- server/getpart: provide dummy function to build conversion enabled

- non-ascii: use iconv() with 'char **' argument
 
 Bug: https://curl.haxx.se/mail/lib-2017-09/0031.html

- escape.c: error: pointer targets differ in signedness

- docs: clarify the CURLOPT_INTERLEAVE* options behavior

- [Max Dymond brought this change]

 rtsp: Segfault in rtsp.c when using WRITEDATA
 
 If the INTERLEAVEFUNCTION is defined, then use that plus the
 INTERLEAVEDATA information when writing RTP. Otherwise, use
 WRITEFUNCTION and WRITEDATA.
 
 Fixes #1880
 Closes #1884

Marcel Raad (15 Sep 2017)
- [Isaac Boukris brought this change]

 tests: enable gssapi in travis-ci linux build
 
 Closes https://github.com/curl/curl/pull/1687

- [Isaac Boukris brought this change]

 tests: add initial gssapi test using stub implementation
 
 The stub implementation is pre-loaded using LD_PRELOAD
 and emulates common gssapi uses (only builds if curl is
 initially built with gssapi support).
 
 The initial tests are currently disabled for debug builds
 as LD_PRELOAD is not used then.
 
 Ref: https://github.com/curl/curl/pull/1687

Daniel Stenberg (15 Sep 2017)
- test1150: verify same host fetch using different ports over proxy
 
 Closes #1889

- URL: on connection re-use, still pick the new remote port
 
 ... as when a proxy connection is being re-used, it can still get a
 different remote port.
 
 Fixes #1887
 Reported-by: Oli Kingshott

- RELEASE-NOTES: synced with 87501e57f

- code style: remove wrong uses of multiple spaces
 
 Closes #1878

- checksrc: detect and warn for multiple spaces

- code style: use space after semicolon

- checksrc: verify space after semicolons

- code style: use spaces around pluses

- checksrc: detect and warn for lack of spaces next to plus signs

- code style: use spaces around equals signs

- checksrc: verify spaces around equals signs
 
 ... as the code style mandates.

- Curl_checkheaders: make it available for IMAP and SMTP too
 
 ... not only HTTP uses this now.
 
 Closes #1875

- travis: add build without HTTP/SMTP/IMAP

Jay Satiro (10 Sep 2017)
- mbedtls: enable CA path processing
 
 CA path processing was implemented when mbedtls.c was added to libcurl
 in fe7590f, but it was never enabled.
 
 Bug: https://github.com/curl/curl/issues/1877
 Reported-by: SBKarr@users.noreply.github.com

Daniel Stenberg (8 Sep 2017)
- rtsp: do not call fwrite() with NULL pointer FILE *
 
 If the default write callback is used and no destination has been set, a
 NULL pointer would be passed to fwrite()'s 4th argument.
 
 OSS-fuzz bug https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3327
 (not publicly open yet)
 
 Detected by OSS-fuzz
 Closes #1874

- configure: use -Wno-varargs on clang 3.9[.X] debug builds
 
 ... to avoid a clang bug

- [Max Dymond brought this change]

 ossfuzz: add some more handled CURL options
 
 Add support for HEADER, COOKIE, RANGE, CUSTOMREQUEST, MAIL_RECIPIENT,
 MAIL_FROM and uploading data.

- configure: check for C++ compiler after C, to make it non-fatal
 
 The tests for object file/executable file extensions are presumably only
 done for the first of these macros in the configure file.
 
 Bug: https://github.com/curl/curl/pull/1851#issuecomment-327597515
 Reported-by: Marcel Raad
 Closes #1873

Patrick Monnerat (7 Sep 2017)
- form API: add new test 650.
 
 Now that the form API is deprecated and not used anymore in curl tool,
 a lot of its features left untested. Test 650 attempts to check all these
 features not tested elsewhere.

Jay Satiro (7 Sep 2017)
- configure: fix curl_off_t check's include order
 
 - Prepend srcdir include path instead of append.
 
 Prior to this change it was possible that during the check for the size
 of curl_off_t the include path of a user's already installed curl could
 come before the include path of the to-be-built curl, resulting in the
 system.h of the former being incorrectly included for that check.
 
 Closes https://github.com/curl/curl/pull/1870

Daniel Stenberg (7 Sep 2017)
- [Jakub Zakrzewski brought this change]

 KNOWN_BUGS: Remove CMake symbol hiding issue
 
 It has already been fixed in 6140dfc

- http-proxy: when not doing CONNECT, that phase is done immediately
 
 `conn->connect_state` is NULL when doing a regular non-CONNECT request
 over the proxy and should therefor be considered complete at once.
 
 Fixes #1853
 Closes #1862
 Reported-by: Lawrence Wagerfield

- [Johannes Schindelin brought this change]

 OpenSSL: fix yet another mistake while encapsulating SSL backend data
 
 Another mistake in my manual fixups of the largely mechanical
 search-and-replace ("connssl->" -> "BACKEND->"), just like the previous
 commit concerning HTTPS proxies (and hence not caught during my
 earlier testing).
 
 Fixes #1855
 Closes #1871
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 OpenSSL: fix erroneous SSL backend encapsulation
 
 In d65e6cc4f (vtls: prepare the SSL backends for encapsulated private
 data, 2017-06-21), this developer prepared for a separation of the
 private data of the SSL backends from the general connection data.
 
 This conversion was partially automated (search-and-replace) and
 partially manual (e.g. proxy_ssl's backend data).
 
 Sadly, there was a crucial error in the manual part, where the wrong
 handle was used: rather than connecting ssl[sockindex]' BIO to the
 proxy_ssl[sockindex]', we reconnected proxy_ssl[sockindex]. The reason
 was an incorrect location to paste "BACKEND->"... d'oh.
 
 Reported by Jay Satiro in https://github.com/curl/curl/issues/1855.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Jay Satiro brought this change]

 vtls: fix memory corruption
 
 Ever since 70f1db321 (vtls: encapsulate SSL backend-specific data,
 2017-07-28), the code handling HTTPS proxies was broken because the
 pointer to the SSL backend data was not swapped between
 conn->ssl[sockindex] and conn->proxy_ssl[sockindex] as intended, but
 instead set to NULL (causing segmentation faults).
 
 [jes: provided the commit message, tested and verified the patch]
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- vtls: switch to CURL_SHA256_DIGEST_LENGTH define
 
 ... instead of the prefix-less version since WolfSSL 3.12 now uses an
 enum with that name that causes build failures for us.
 
 Fixes #1865
 Closes #1867
 Reported-by: Gisle Vanem

- travis: add c-ares enabled builds linux + osx
 
 Closes #1868

- HISTORY: added some recent items

Jay Satiro (6 Sep 2017)
- SSL: fix unused parameter warnings

Patrick Monnerat (6 Sep 2017)
- mime: drop internal FILE * support.
 
 - The part kind MIMEKIND_FILE and associated code are suppressed.
 - Seek data origin offset not used anymore: suppressed.
 - MIMEKIND_NAMEDFILE renamed MIMEKIND_FILE; associated fields/functions
 renamed accordingly.
 - Curl_getformdata() processes stdin via a callback.

Daniel Stenberg (6 Sep 2017)
- configure: remove --enable-soname-bump and SONAME_BUMP
 
 Back in 2008, (and commit 3f3d6ebe665f3) we changed the logic in how we
 determine the native type for `curl_off_t`. To really make sure we
 didn't break ABI without bumping SONAME, we introduced logic that
 attempted to detect that it would use a different size and thus not be
 compatible. We also provided a manual switch that allowed users to tell
 configure to bump SONAME by force.
 
 Today, we know of no one who ever got a SONAME bump auto-detected and we
 don't know of anyone who's using the manual bump feature. The auto-
 detection is also no longer working since we introduced defining
 curl_off_t in system.h (7.55.0).
 
 Finally, this bumping logic is not present in the cmake build.
 
 Closes #1861

Jay Satiro (6 Sep 2017)
- [Gisle Vanem brought this change]

 vtls: select ssl backend case-insensitive (follow-up)
 
 - Do a case-insensitive comparison of CURL_SSL_BACKEND env as well.
 
 - Change Curl_strcasecompare calls to strcasecompare
 (maps to the former but shorter).
 
 Follow-up to c290b8f.
 
 Bug: https://github.com/curl/curl/commit/c290b8f#commitcomment-24094313
 
 Co-authored-by: Jay Satiro

- openssl: Integrate Peter Wu's SSLKEYLOGFILE implementation
 
 This is an adaptation of 2 of Peter Wu's SSLKEYLOGFILE implementations.
 
 The first one, written for old OpenSSL versions:
 https://git.lekensteyn.nl/peter/wireshark-notes/tree/src/sslkeylog.c
 
 The second one, written for BoringSSL and new OpenSSL versions:
 https://github.com/curl/curl/pull/1346
 
 Note the first one is GPL licensed but the author gave permission to
 waive that license for libcurl.
 
 As of right now this feature is disabled by default, and does not have
 a configure option to enable it. To enable this feature define
 ENABLE_SSLKEYLOGFILE when building libcurl and set environment
 variable SSLKEYLOGFILE to a pathname that will receive the keys.
 
 And in Wireshark change your preferences to point to that key file:
 Edit > Preferences > Protocols > SSL > Master-Secret
 
 Co-authored-by: Peter Wu
 
 Ref: https://github.com/curl/curl/pull/1030
 Ref: https://github.com/curl/curl/pull/1346
 
 Closes https://github.com/curl/curl/pull/1866

Patrick Monnerat (5 Sep 2017)
- mime: fix a trivial warning.

- mime: replace 'struct Curl_mimepart' by 'curl_mimepart' in encoder code.
 
 mime_state is now a typedef.

- mime: implement encoders.
 
 curl_mime_encoder() is operational and documented.
 curl tool -F option is extended with ";encoder=".
 curl tool --libcurl option generates calls to curl_mime_encoder().
 New encoder tests 648 & 649.
 Test 1404 extended with an encoder specification.

- runtests.pl: support attribute "nonewline" in part verify/upload.

- [Daniel Stenberg brought this change]

 fixup data/test1135

- [Daniel Stenberg brought this change]

 mime: unified to use the typedef'd mime structs everywhere
 
 ... and slightly edited to follow our code style better.

- [Daniel Stenberg brought this change]

 curl.h: use lower case curl_mime* as for all public symbols

- [Daniel Stenberg brought this change]

 docs/curl_mime_*.3: use correct variable types in examples

Kamil Dudka (5 Sep 2017)
- openssl: use OpenSSL's default ciphers by default
 
 Up2date versions of OpenSSL maintain the default reasonably secure
 without breaking compatibility, so it is better not to override the
 default by curl. Suggested at https://bugzilla.redhat.com/1483972
 
 Closes #1846

Viktor Szakats (5 Sep 2017)
- examples/mime: minor example code fixes

Daniel Stenberg (5 Sep 2017)
- docs/curl_mime_*.3: added examples

- configure: add MultiSSL to FEATURES when enabled
 
 ...for curl-config and its corresponding test 1014

- http-proxy: treat all 2xx as CONNECT success
 
 Added test 1904 to verify.
 
 Reported-by: Lawrence Wagerfield
 Fixes #1859
 Closes #1860

- MAIL-ETIQUETTE: added "1.9 Your emails are public"

- curl.h: fix "unused checksrc ignore", remove dangling reference
 
 ... to a README file that doesn't exist anymore

Viktor Szakats (4 Sep 2017)
- docs: Update to secure URL versions

- mime: use CURL_ZERO_TERMINATED in examples
 
 and some minor whitespace fixes

Daniel Stenberg (4 Sep 2017)
- schannel: return CURLE_SSL_CACERT on failed verification
 
 ... not *CACERT_BADFILE as it isn't really because of a bad file.
 
 Bug: https://curl.haxx.se/mail/lib-2017-09/0002.html
 Closes #1858

- test1135: fixed after bd8070085f9

- examples/post-callback: stop returning one byte at a time
 
 ... since people copy and paste code from this example and thus they get
 an inefficient POST operation without a good reason and sometimes
 without understanding why.
 
 Instead this now returns as much data as possible.

- RELEASE-NOTES: fixed the function counter script

- curl.h: make the curl_strequal() protos use the same style
 
 ... as the other functions. Makes it easier to machine-parse!

- docs: curl_mime_*.3 man page formatting edits

- RELEASE-NOTES: synced with 1ab9e9b50

Patrick Monnerat (4 Sep 2017)
- lib: bump version info (soname). Adapt and reenable test 1135.

Daniel Stenberg (3 Sep 2017)
- headers: move the global_sslset() proto from multi.h to curl.h
 
 As it was added to multi.h simply to not break test 1135, which now has
 been disabled due to the mime API addition anyway and su we can now move
 the sslset stuff to where the other curl_global_* prototypes are.

Patrick Monnerat (3 Sep 2017)
- mime: fix signed/unsigned conversions.
 
 Use and generate CURL_ZERO_TERMINATED in curl tool and tests.

Jay Satiro (3 Sep 2017)
- tool_formparse: fix some trivial warnings

Patrick Monnerat (3 Sep 2017)
- mime: use size_t instead of ssize_t in public API interface.
 
 To support telling a string is nul-terminated, symbol CURL_ZERO_TERMINATED
 has been introduced.
 
 Documentation updated accordingly.
 
 symbols in versions updated. Added form API symbols deprecation info.

- mime: remove support "-" stdin pseudo-file name in curl_mime_filedata().
 
 This feature is badly supported in Windows: as a replacement, a caller has
 to use curl_mime_data_cb() with fread, fseek and possibly fclose
 callbacks to process opened files.
 
 The cli tool and documentation are updated accordingly.
 
 The feature is however kept internally for form API compatibility, with
 the known caveats it always had.
 
 As a side effect, stdin size is not determined by the cli tool even if
 possible and this results in a chunked transfer encoding. Test 173 is
 updated accordingly.

- mime: fix some implicit curl_off_t --> size_t conversion warnings.

- mime: tests and examples.
 
 Additional mime-specific tests.
 Existing tests updated to reflect small differences (Expect: 100-continue,
 data size change due to empty lines, etc).
 Option -F headers= keyword added to tests.
 test1135 disabled until the entry point order change is resolved.
 New example smtp-mime.
 Examples postit2 and multi-post converted from form API to mime API.

- mime: use in curl cli tool instead of form API.
 
 Extended -F option syntax to support multipart mail messages.
 -F keyword headers= added to include custom headers in parts.
 Documentation upgraded.

- mime: new MIME API.
 
 Available in HTTP, SMTP and IMAP.
 Deprecates the FORM API.
 See CURLOPT_MIMEPOST.
 Lib code and associated documentation.

- test564: Add a warning comment about shell profile output.
 
 Shell profile output makes the SSH server failing and this problem reason
 is not easy to find when no hint is given.

- checksrc: disable SPACEBEFOREPAREN for case statement.
 
 The case keyword may be followed by a constant expression and thus should
 allow it to start with an open parenthesis.

- runtests.pl: allow <file[1-4]> tags in client section.
 
 This enables tests to create more than one file on the client side.

- runtests.pl: Apply strippart to upload too.
 
 This will allow substitution of boundaries in mail messages.

- Curl_base64_encode: always call with a real data handle.
 
 Some calls in different modules were setting the data handle to NULL, causing
 segmentation faults when using builds that enable character code conversions.

- non-ascii: allow conversion functions to be called with a NULL data handle.

- http: fix a memory leakage in checkrtspprefix().

Daniel Stenberg (2 Sep 2017)
- [Max Dymond brought this change]

 ossfuzz: Move to C++ for curl_fuzzer.
 
 Automake gets confused if you want to use C++ static libraries with C
 code - basically we need to involve the clang++ linker. The easiest way
 of achieving this is to rename the C code as C++ code. This gets us a
 bit further along the path and ought to be compatible with Google's
 version of clang.

- curl_global_sslset: select backend by name case insensitively
 
 Closes #1849

- [Max Dymond brought this change]

 ossfuzz: additional seed corpora
 
 Create simple seed corpora for:
 - FTP
 - telnet
 - dict
 - tftp
 - imap
 - pop3
 
 based off the tests of the same number.
 
 Closes #1842

- [Max Dymond brought this change]

 ossfuzz: moving towards the ideal integration
 
 - Start with the basic code from the ossfuzz project.
 - Rewrite fuzz corpora to be binary files full of Type-Length-Value
 data, and write a glue layer in the fuzzing function to convert
 corpora into CURL options.
 - Have supporting functions to generate corpora from existing tests
 - Integrate with Makefile.am

- strcase: corrected comment header for Curl_strcasecompare()

- unit1301: fix error message on first test

- curl_global_sslset.3: show the struct and enum too
 
 ... so that users can actually write code based on the man page alone,
 not having to read the header file.

Jay Satiro (31 Aug 2017)
- darwinssl: handle long strings in TLS certs (follow-up)
 
 - Fix handling certificate subjects that are already UTF-8 encoded.
 
 Follow-up to b3b75d1 from two days ago. Since then a copy would be
 skipped if the subject was already UTF-8, possibly resulting in a NULL
 deref later on.
 
 Ref: https://github.com/curl/curl/issues/1823
 Ref: https://github.com/curl/curl/pull/1831
 
 Closes https://github.com/curl/curl/pull/1836

Daniel Stenberg (31 Aug 2017)
- cyassl: call it the "WolfSSL" backend
 
 ... instead of cyassl, as this is the current name for it.
 
 Closes #1844

- polarssl: fix multissl breakage
 
 Reported-by: Dan Fandrich
 Bug: https://curl.haxx.se/mail/lib-2017-08/0121.html
 Closes #1843

- configure: remove the leading comma from the backends list
 
 ... when darwinssl is used.
 
 Reported-by: Viktor Szakats
 Bug: https://github.com/curl/curl/commit/b0989cd3abaff4f9a0717b4875022fa79e33b481#commitcomment-23943493
 
 Closes #1845

Kamil Dudka (30 Aug 2017)
- examples/sslbackend.c: fix failure of 'make checksrc'
 
 ./sslbackend.c:58:3: warning: else after closing brace on same line (BRACEELSE)
 } else if(isdigit(*name)) {
 ^
 ./sslbackend.c:62:3: warning: else after closing brace on same line (BRACEELSE)
 } else
 ^

Viktor Szakats (30 Aug 2017)
- makefile.m32: add multissl support
 
 Closes https://github.com/curl/curl/pull/1840

Daniel Stenberg (30 Aug 2017)
- curl.h: CURLSSLBACKEND_WOLFSSL used wrong value
 
 The CURLSSLBACKEND_WOLFSSL is supposed to be an alias for
 CURLSSLBACKEND_CYASSL, but used an erronous value. To reduce the risk
 for a similar mistake, define the backend aliases to use the enum values
 instead.
 
 Reported-by: Gisle Vanem
 Bug: https://curl.haxx.se/mail/lib-2017-08/0120.html

- curl_global_sslset.3: clarify
 
 it is a one time *set*, not necessarily a one time use... it can be
 called again if the first call failed or just listed the alternatives.
 
 clarify that the available backends are the ones this build supports
 
 plus add some formatting
 
 Reported-by: Rich Gray
 Bug: https://curl.haxx.se/mail/lib-2017-08/0119.html

- curl/multi.h: remove duplicated closing c++ brace
 
 Regression since 1328f69d53f2f2e93
 
 Fixes #1841
 Reported-by: Andrei Karas

- RELEASE-NOTES: synced with 8c33c963a

- HELP-US.md: spelling

- HELP-US.md: "How to get started helping out in the curl project"
 
 Closes #1837

Dan Fandrich (29 Aug 2017)
- asyn-thread: Fixed cleanup after OOM
 
 destroy_async_data() assumes that if the flag "done" is not set yet, the
 thread itself will clean up once the request is complete. But if an
 error (generally OOM) occurs before the thread even has a chance to
 start, it will never get a chance to clean up and memory will be leaked.
 By clearing "done" only just before starting the thread, the correct
 cleanup sequence will happen in all cases.

Daniel Stenberg (28 Aug 2017)
- curl_global_init.3: mention curl_global_sslset(3)

Dan Fandrich (28 Aug 2017)
- unit1606: Fixed shadowed variable warning

- asyn-thread: Improved cleanup after OOM situations

- asyn-thread: Set errno to the proper value ENOMEM in OOM situation
 
 This used to be set in some configurations to EAI_MEMORY which is not a
 valid value for errno and caused Curl_strerror to fail an assertion.

Daniel Stenberg (28 Aug 2017)
- [Johannes Schindelin brought this change]

 configure: Handle "MultiSSL" specially When versioning symbols
 
 There is a mode in which libcurl is compiled with versioned symbols,
 depending on the active SSL backend.
 
 When multiple SSL backends are active, it does not make sense to favor
 one over the others, so let's not: introduce a new prefix for the case
 where multiple SSL backends are compiled into cURL.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 configure: allow setting the default SSL backend
 
 Previously, we used as default SSL backend whatever was first in the
 `available_backends` array.
 
 However, some users may want to override that default without patching
 the source code.
 
 Now they can: with the --with-default-ssl-backend=<backend> option of
 the ./configure script.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: use Curl_ssl_multi pseudo backend only when needed
 
 When only one SSL backend is configured, it is totally unnecessary to
 let multissl_init() configure the backend at runtime, we can select the
 correct backend at build time already.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 version: if built with more than one SSL backend, report all of them
 
 To discern the active one from the inactive ones, put the latter into
 parentheses.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 version: add the CURL_VERSION_MULTI_SSL feature flag
 
 This new feature flag reports When cURL was built with multiple SSL
 backends.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 metalink: allow compiling with multiple SSL backends
 
 Previously, the code assumed that at most one of the SSL backends would
 be compiled in, emulating OpenSSL's functions if the configured backend
 was not OpenSSL itself.
 
 However, now we allow building with multiple SSL backends and choosing
 one at runtime. Therefore, metalink needs to be adjusted to handle this
 scenario, too.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 docs/examples: demonstrate how to select SSL backends
 
 The newly-introduced curl_global_sslset() function deserves to be
 show-cased.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 Add a man page for curl_global_sslset()
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: introduce curl_global_sslset()
 
 Let's add a compile time safe API to select an SSL backend. This
 function needs to be called *before* curl_global_init(), and can be
 called only once.
 
 Side note: we do not explicitly test that it is called before
 curl_global_init(), but we do verify that it is not called multiple times
 (even implicitly).
 
 If SSL is used before the function was called, it will use whatever the
 CURL_SSL_BACKEND environment variable says (or default to the first
 available SSL backend), and if a subsequent call to
 curl_global_sslset() disagrees with the previous choice, it will fail
 with CURLSSLSET_TOO_LATE.
 
 The function also accepts an "avail" parameter to point to a (read-only)
 NULL-terminated list of available backends. This comes in real handy if
 an application wants to let the user choose between whatever SSL backends
 the currently available libcurl has to offer: simply call
 
 curl_global_sslset(-1, NULL, &avail);
 
 which will return CURLSSLSET_UNKNOWN_BACKEND and populate the avail
 variable to point to the relevant information to present to the user.
 
 Just like with the HTTP/2 push functions, we have to add the function
 declaration of curl_global_sslset() function to the header file
 *multi.h* because VMS and OS/400 require a stable order of functions
 declared in include/curl/*.h (where the header files are sorted
 alphabetically). This looks a bit funny, but it cannot be helped.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: refactor out essential information about the SSL backends
 
 There is information about the compiled-in SSL backends that is really
 no concern of any code other than the SSL backend itself, such as which
 function (if any) implements SHA-256 summing.
 
 And there is information that is really interesting to the user, such as
 the name, or the curl_sslbackend value.
 
 Let's factor out the latter into a publicly visible struct. This
 information will be used in the upcoming API to set the SSL backend
 globally.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: allow selecting which SSL backend to use at runtime
 
 When building software for the masses, it is sometimes not possible to
 decide for all users which SSL backend is appropriate.
 
 Git for Windows, for example, uses cURL to perform clones, fetches and
 pushes via HTTPS, and some users strongly prefer OpenSSL, while other
 users really need to use Secure Channel because it offers
 enterprise-ready tools to manage credentials via Windows' Credential
 Store.
 
 The current Git for Windows versions use the ugly work-around of
 building libcurl once with OpenSSL support and once with Secure Channel
 support, and switching out the binaries in the installer depending on
 the user's choice.
 
 Needless to say, this is a super ugly workaround that actually only
 works in some cases: Git for Windows also comes in a portable form, and
 in a form intended for third-party applications requiring Git
 functionality, in which cases this "swap out libcurl-4.dll" simply is
 not an option.
 
 Therefore, the Git for Windows project has a vested interest in teaching
 cURL to make the SSL backend a *runtime* option.
 
 This patch makes that possible.
 
 By running ./configure with multiple --with-<backend> options, cURL will
 be built with multiple backends.
 
 For the moment, the backend can be configured using the environment
 variable CURL_SSL_BACKEND (valid values are e.g. "openssl" and
 "schannel").
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: fold the backend ID into the Curl_ssl structure
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 curl_ntlm_core: don't complain but #include OpenSSL header if needed
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: encapsulate SSL backend-specific data
 
 So far, all of the SSL backends' private data has been declared as
 part of the ssl_connect_data struct, in one big #if .. #elif .. #endif
 block.
 
 This can only work as long as the SSL backend is a compile-time option,
 something we want to change in the next commits.
 
 Therefore, let's encapsulate the exact data needed by each SSL backend
 into a private struct, and let's avoid bleeding any SSL backend-specific
 information into urldata.h. This is also necessary to allow multiple SSL
 backends to be compiled in at the same time, as e.g. OpenSSL's and
 CyaSSL's headers cannot be included in the same .c file.
 
 To avoid too many malloc() calls, we simply append the private structs
 to the connectdata struct in allocate_conn().
 
 This requires us to take extra care of alignment issues: struct fields
 often need to be aligned on certain boundaries e.g. 32-bit values need to
 be stored at addresses that divide evenly by 4 (= 32 bit / 8
 bit-per-byte).
 
 We do that by assuming that no SSL backend's private data contains any
 fields that need to be aligned on boundaries larger than `long long`
 (typically 64-bit) would need. Under this assumption, we simply add a
 dummy field of type `long long` to the `struct connectdata` struct. This
 field will never be accessed but acts as a placeholder for the four
 instances of ssl_backend_data instead. the size of each ssl_backend_data
 struct is stored in the SSL backend-specific metadata, to allow
 allocate_conn() to know how much extra space to allocate, and how to
 initialize the ssl[sockindex]->backend and proxy_ssl[sockindex]->backend
 pointers.
 
 This would appear to be a little complicated at first, but is really
 necessary to encapsulate the private data of each SSL backend correctly.
 And we need to encapsulate thusly if we ever want to allow selecting
 CyaSSL and OpenSSL at runtime, as their headers cannot be included within
 the same .c file (there are just too many conflicting definitions and
 declarations for that).
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: prepare the SSL backends for encapsulated private data
 
 At the moment, cURL's SSL backend needs to be configured at build time.
 As such, it is totally okay for them to hard-code their backend-specific
 data in the ssl_connect_data struct.
 
 In preparation for making the SSL backend a runtime option, let's make
 the access of said private data a bit more abstract so that it can be
 adjusted later in an easy manner.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 urldata.h: move SSPI-specific #include to correct location
 
 In 86b889485 (sasl_gssapi: Added GSS-API based Kerberos V5 variables,
 2014-12-03), an SSPI-specific field was added to the kerberos5data
 struct without moving the #include "curl_sspi.h" later in the same file.
 
 This broke the build when SSPI was enabled, unless Secure Channel was
 used as SSL backend, because it just so happens that Secure Channel also
 requires "curl_sspi.h" to be #included.
 
 In f4739f639 (urldata: include curl_sspi.h when Windows SSPI is enabled,
 2017-02-21), this bug was fixed incorrectly: Instead of moving the
 appropriate conditional #include, the Secure Channel-conditional part
 was now also SSPI-conditional.
 
 Fix this problem by moving the correct #include instead.
 
 This is also required for an upcoming patch that moves all the Secure
 Channel-specific stuff out of urldata.h and encapsulates it properly in
 vtls/schannel.c instead.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 urldata.h: remove support for obsolete PolarSSL version
 
 Since 5017d5ada (polarssl: now require 1.3.0+, 2014-03-17), we require
 a newer PolarSSL version. No need to keep code trying to support any
 older version.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 getinfo: access SSL internals via Curl_ssl
 
 In the ongoing endeavor to abstract out all SSL backend-specific
 functionality, this is the next step: Instead of hard-coding how the
 different SSL backends access their internal data in getinfo.c, let's
 implement backend-specific functions to do that task.
 
 This will also allow for switching SSL backends as a runtime option.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: move SSL backends' private constants out of their header files
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 axtls: use Curl_none_* versions of init() and cleanup()
 
 There are convenient no-op versions of the init/cleanup functions now,
 no need to define private ones for axTLS.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: remove obsolete declarations of SSL backend functionality
 
 These functions are all available via the Curl_ssl struct now, no need
 to declare them separately anymore.
 
 As the global declarations are removed, the corresponding function
 definitions are marked as file-local. The only two exceptions here are
 Curl_mbedtls_shutdown() and Curl_polarssl_shutdown(): only the
 declarations were removed, there are no function definitions to mark
 file-local.
 
 Please note that Curl_nss_force_init() is *still* declared globally, as
 the only SSL backend-specific function, because it was introduced
 specifically for the use case where cURL was compiled with
 `--without-ssl --with-nss`. For details, see f3b77e561 (http_ntlm: add
 support for NSS, 2010-06-27).
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 schannel: reorder functions topologically
 
 The _shutdown() function calls the _session_free() function; While this
 is not a problem now (because schannel.h declares both functions), a
 patch looming in the immediate future with make all of these functions
 file-local.
 
 So let's just move the _session_free() function's definition before it
 is called.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 axtls: reorder functions topologically
 
 The connect_finish() function (like many other functions after it) calls
 the Curl_axtls_close() function; While this is not a problem now
 (because axtls.h declares the latter function), a patch looming in the
 immediate future with make all of these functions file-local.
 
 So let's just move the Curl_axtls_close() function's definition before
 it is called.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: move the SUPPORT_HTTPS_PROXY flag into the Curl_ssl struct
 
 That will allow us to choose the SSL backend at runtime.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: convert the have_curlssl_* constants to runtime flags
 
 The entire idea of introducing the Curl_ssl struct to describe SSL
 backends is to prepare for choosing the SSL backend at runtime.
 
 To that end, convert all the #ifdef have_curlssl_* style conditionals
 to use bit flags instead.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: move sha256sum into the Curl_ssl struct
 
 The SHA-256 checksumming is also an SSL backend-specific function.
 Let's include it in the struct declaring the functionality of SSL
 backends.
 
 In contrast to MD5, there is no fall-back code. To indicate this, the
 respective entries are NULL for those backends that offer no support for
 SHA-256 checksumming.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: move md5sum into the Curl_ssl struct
 
 The MD5 summing is also an SSL backend-specific function. So let's
 include it, offering the previous fall-back code as a separate function
 now: Curl_none_md5sum(). To allow for that, the signature had to be
 changed so that an error could be returned from the implementation
 (Curl_none_md5sum() can run out of memory).
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: use the Curl_ssl struct to access all SSL backends' functionality
 
 This is the first step to unify the SSL backend handling. Now all the
 SSL backend-specific functionality is accessed via a global instance of
 the Curl_ssl struct.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: declare Curl_ssl structs for every SSL backend
 
 The idea of introducing the Curl_ssl struct was to unify how the SSL
 backends are declared and called. To this end, we now provide an
 instance of the Curl_ssl struct for each and every SSL backend.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: introduce a new struct for SSL backends
 
 This new struct is similar in nature to Curl_handler: it will define the
 functions and capabilities of all the SSL backends (where Curl_handler
 defines the functions and capabilities of protocol handlers).
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: make sure every _sha256sum()'s first arg is const
 
 This patch makes the signature of the _sha256sum() functions consistent
 among the SSL backends, in preparation for unifying the way all SSL
 backends are accessed.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: make sure all _data_pending() functions return bool
 
 This patch makes the signature of the _data_pending() functions
 consistent among the SSL backends, in preparation for unifying the way
 all SSL backends are accessed.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: make sure all _cleanup() functions return void
 
 This patch makes the signature of the _cleanup() functions consistent
 among the SSL backends, in preparation for unifying the way all SSL
 backends are accessed.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

 vtls: use consistent signature for _random() implementations
 
 This will make the upcoming multissl backend much easier to implement.
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- strtooff: fix build for systems with long long but no strtoll option
 
 Closes #1829
 
 Reported-by: Dan Fandrich
 Bug: https://github.com/curl/curl/pull/1758#issuecomment-324861615

- darwinssl: handle long strings in TLS certs
 
 ... as the previous fixed length 128 bytes buffer was sometimes too
 small.
 
 Fixes #1823
 Closes #1831
 
 Reported-by: Benjamin Sergeant
 Assisted-by: Bill Pyne, Ray Satiro, Nick Zitzmann

- system.h: include sys/poll.h for AIX
 
 ... to get the event/revent defines that might be used for the poll
 struct.
 
 Reported-by: Michael Smith
 Fixes #1828
 Closes #1833

Dan Fandrich (26 Aug 2017)
- tests: Make sure libtests & unittests call curl_global_cleanup()
 
 These were missed in commit c468c27b.

Jay Satiro (26 Aug 2017)
- [theantigod brought this change]

 winbuild: fix embedded manifest option
 
 Embedded manifest option didn't work due to incorrect path.
 
 Fixes https://github.com/curl/curl/issues/1832

Daniel Stenberg (25 Aug 2017)
- fuzz/Makefile.am: remove curlbuild.h leftovers

- examples/threaded-ssl: mention that this is for openssl before 1.1

- imap: use defined names for response codes
 
 When working on this code I found the previous setup a bit weird while
 using proper defines increases readability.
 
 Closes #1824

- CURLOPT_USERPWD.3: see also CURLOPT_PROXYUSERPWD

- imap: support PREAUTH
 
 It is a defined possible greeting at server startup that means the
 connection is already authenticated. See
 https://tools.ietf.org/html/rfc3501#section-7.1.4
 
 Test 846 added to verify.
 
 Fixes #1818
 Closes #1820

Jay Satiro (23 Aug 2017)
- config-tpf: define SIZEOF_LONG
 
 Recent changes that replaced CURL_SIZEOF_LONG in the source with
 SIZEOF_LONG broke builds that use the premade configuration files and
 don't have SIZEOF_LONG defined.
 
 Bug: https://github.com/curl/curl/issues/1816

Dan Fandrich (23 Aug 2017)
- test1453: Fixed <features>

Daniel Stenberg (22 Aug 2017)
- [Gisle Vanem brought this change]

 config-dos: add missing defines, SIZEOF_* and two others
 
 Bug: #1816

- curl: shorten and clean up CA cert verification error message
 
 The previous message was just too long for ordinary people and it was
 encouraging users to use `--insecure` a little too easy.
 
 Based-on-work-by: Frank Denis
 
 Closes #1810
 Closes #1817

- request-target.d: mention added in 7.55.0

Marcel Raad (22 Aug 2017)
- tool_main: turn off MinGW CRT's globbing
 
 By default, the MinGW CRT globs command-line arguments. This prevents
 getting a single asterisk into an argument as test 1299 does. Turn off
 globbing by setting the global variable _CRT_glob to 0 for MinGW.
 
 Fixes https://github.com/curl/curl/issues/1751
 Closes https://github.com/curl/curl/pull/1813

Viktor Szakats (22 Aug 2017)
- makefile.m32: add support for libidn2
 
 libidn was replaced with libidn2 last year in configure.
 Caveat: libidn2 may depend on a list of further libs.
 These can be manually specified via CURL_LDFLAG_EXTRAS.
 
 Closes https://github.com/curl/curl/pull/1815

Jay Satiro (22 Aug 2017)
- [Viktor Szakats brought this change]

 config-win32: define SIZEOF_LONG
 
 Recent changes that replaced CURL_SIZEOF_LONG in the source with
 SIZEOF_LONG broke builds that use the premade configuration files and
 don't have SIZEOF_LONG defined.
 
 Closes https://github.com/curl/curl/pull/1814

Daniel Stenberg (20 Aug 2017)
- cmake: enable picky compiler options with clang and gcc
 
 closes #1799

- curl/system.h: fix build for hppa
 
 Reported-by: John David Anglin
 Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=872502#10

- [Even Rouault brought this change]

 tftp: fix memory leak on too long filename
 
 Fixes
 
 $ valgrind --leak-check=full ~/install-curl-git/bin/curl tftp://localhost/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaz
 
 ==9752== Memcheck, a memory error detector
 ==9752== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
 ==9752== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
 ==9752== Command: /home/even/install-curl-git/bin/curl tftp://localhost/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaz
 ==9752==
 curl: (71) TFTP file name too long
 
 ==9752==
 ==9752== HEAP SUMMARY:
 ==9752== 505 bytes in 1 blocks are definitely lost in loss record 11 of 11
 ==9752== at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
 ==9752== by 0x4E61CED: Curl_urldecode (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
 ==9752== by 0x4E75868: tftp_state_machine (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
 ==9752== by 0x4E761B6: tftp_do (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
 ==9752== by 0x4E711B6: multi_runsingle (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
 ==9752== by 0x4E71D00: curl_multi_perform (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
 ==9752== by 0x4E6950D: curl_easy_perform (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
 ==9752== by 0x40E0B7: operate_do (in /home/even/install-curl-git/bin/curl)
 ==9752== by 0x40E849: operate (in /home/even/install-curl-git/bin/curl)
 ==9752== by 0x402693: main (in /home/even/install-curl-git/bin/curl)
 
 Fixes https://oss-fuzz.com/v2/testcase-detail/5232311106797568
 Credit to OSS Fuzz
 
 Closes #1808

Dan Fandrich (19 Aug 2017)
- runtests: fixed case insensitive matching of keywords
 
 Commit 5c2aac71 didn't work in the case of mixed-case keywords given on
 the command-line.

- tests: Make sure libtests call curl_global_cleanup()
 
 This ensures that global data allocations are freed so Valgrind stays
 happy. This was a problem with at least PolarSSL and mbedTLS.

Daniel Stenberg (18 Aug 2017)
- RELEASE-NOTES: synced with 8baead425

- scripts/contri*sh: use "git log --use-mailmap"

- mailmap: de-duplify some git authors

- http2_recv: return error better on fatal h2 errors
 
 Ref #1012
 Figured-out-by: Tatsuhiro Tsujikawa

- KNOWN_BUGS: HTTP test server 'connection-monitor' problems
 
 Closes #868

- curl/system.h: check for __ppc__ as well
 
 ... regression since issue #1774 (commit 10b3df10596a) since obviously
 some older gcc doesn't know __powerpc__ while some newer doesn't know
 __ppc__ ...
 
 Fixes #1797
 Closes #1798
 Reported-by: Ryan Schmidt

- [Jan Alexander Steffens (heftig) brought this change]

 http: Don't wait on CONNECT when there is no proxy
 
 Since curl 7.55.0, NetworkManager almost always failed its connectivity
 check by timeout. I bisected this to 5113ad04 (http-proxy: do the HTTP
 CONNECT process entirely non-blocking).
 
 This patch replaces !Curl_connect_complete with Curl_connect_ongoing,
 which returns false if the CONNECT state was left uninitialized and lets
 the connection continue.
 
 Closes #1803
 Fixes #1804
 
 Also-fixed-by: Gergely Nagy

- [Johannes Schindelin brought this change]

 metalink: adjust source code style
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- CURL_SIZEOF_LONG: removed, use only SIZEOF_LONG

- lib557: no longer use CURL_SIZEOF_* defines

- config-win32: define SIZEOF_CURL_OFF_T

- cmake: sizeof curl_off_t, remove unused detections

- system.h: remove all CURL_SIZEOF_* defines
 
 ... as they're not used externally and internally we check for the sizes
 already in configure etc.
 
 Closes #1767

- ftp: fix CWD when doing multicwd then nocwd on same connection
 
 Fixes #1782
 Closes #1787
 Reported-by: Peter Lamare

- CURLOPT_SSH_COMPRESSION.3: enable with 1L
 
 (leaves other values reserved for the future)

- compressed-ssh.d: "Added: 7.56.0"

- curl/system.h: checksrc compliance

Jay Satiro (17 Aug 2017)
- [Viktor Szakats brought this change]

 ssh: add the ability to enable compression (for SCP/SFTP)
 
 The required low-level logic was already available as part of
 `libssh2` (via `LIBSSH2_FLAG_COMPRESS` `libssh2_session_flag()`[1]
 option.)
 
 This patch adds the new `libcurl` option `CURLOPT_SSH_COMPRESSION`
 (boolean) and the new `curl` command-line option `--compressed-ssh`
 to request this `libssh2` feature. To have compression enabled, it
 is required that the SSH server supports a (zlib) compatible
 compression method and that `libssh2` was built with `zlib` support
 enabled.
 
 [1] https://www.libssh2.org/libssh2_session_flag.html
 
 Ref: https://github.com/curl/curl/issues/1732
 Closes https://github.com/curl/curl/pull/1735

- examples/ftpuploadresume: checksrc compliance

- [Maksim Stsepanenka brought this change]

 http_proxy: fix build error for CURL_DOES_CONVERSIONS
 
 Closes https://github.com/curl/curl/pull/1793

GitHub (16 Aug 2017)
- [Nick Zitzmann brought this change]

 configure: check for __builtin_available() availability (#1788)
 
 This change does two things:
 1. It un-breaks the build in Xcode 9.0. (Xcode 9.0 is currently
 failing trying to compile connectx() in lib/connect.c.)
 2. It finally weak-links the connectx() function, and falls back on
 connect() when run on older operating systems.

Daniel Stenberg (16 Aug 2017)
- travis: add metalink to some osx builds
 
 Closes #1790

- [Max Dymond brought this change]

 coverage: Use two coveralls commands to get lib/vtls results
 
 closes #1747

- darwinssi: fix error: variable length array used

- m4/curl-compilers.m4: use proper quotes around string, not backticks
 
 ... when setting clang version to assume 3.7
 
 Caused a lot of "integer expression expected" warnings by configure.

- [Benbuck Nason brought this change]

 cmake: remove dead code for DISABLED_THREADSAFE
 
 Closes #1786

Jay Satiro (15 Aug 2017)
- [Jakub Zakrzewski brought this change]

 curl-confopts.m4: fix --disable-threaded-resolver
 
 Closes https://github.com/curl/curl/issues/1784

Daniel Stenberg (15 Aug 2017)
- [Ryan Winograd brought this change]

 progress: Track total times following redirects
 
 Update the progress timers `t_nslookup`, `t_connect`, `t_appconnect`,
 `t_pretransfer`, and `t_starttransfer` to track the total times for
 these activities when a redirect is followed. Previously, only the times
 for the most recent request would be tracked.
 
 Related changes:
 
 - Rename `Curl_pgrsResetTimesSizes` to `Curl_pgrsResetTransferSizes`
 now that the function only resets transfer sizes and no longer
 modifies any of the progress timers.
 
 - Add a bool to the `Progress` struct that is used to prevent
 double-counting `t_starttransfer` times.
 
 Added test case 1399.
 
 Fixes #522 and Known Bug 1.8
 Closes #1602
 Reported-by: joshhe on github

- [Benbuck Nason brought this change]

 cmake: remove dead code for CURL_DISABLE_RTMP
 
 Closes #1785

Kamil Dudka (15 Aug 2017)
- zsh.pl: produce a working completion script again
 
 Commit curl-7_54_0-118-g8b2f22e changed the output format of curl --help
 to use <file> and <dir> instead of FILE and DIR, which caused zsh.pl to
 produce a broken completion script:
 
 % curl --<TAB>
 _curl:10: no such file or directory: seconds
 
 Closes #1779

Daniel Stenberg (15 Aug 2017)
- curlver: toward 7.56.0?

- RELEASE-NOTES: synced with 91c46dc44

- test1449: FTP download range with an too large size

- strtoofft: reduce integer overflow risks globally
 
 ... make sure we bail out on overflows.
 
 Reported-by: Brian Carpenter
 Closes #1758

- travis: build the examples too
 
 to make sure they keep building warning-free
 
 Closes #1777

- runtests: match keywords case insensitively

- examples/ftpuploadresume.c: use portable code
 
 ... converted from the MS specific _snscanf()

Version 7.55.1 (13 Aug 2017)

Daniel Stenberg (13 Aug 2017)
- RELEASE-NOTES/THANKS: curl 7.55.1 release time

- gitignore: ignore .xz now instead of .lzma

- [Sergei Nikulov brought this change]

 cmake: Threads detection update. ref: #1702
 
 Closes #1719

- ipv6_scope: support unique local addresses
 
 Fixes #1764
 Closes #1773
 Reported-by: James Slaughter

- [Alex Potapenko brought this change]

 curl/system.h: GCC doesn't define __ppc__ on PowerPC, uses __powerpc__
 
 Closes #1774

- test1448: verify redirect to IDN using URL
 
 Closes #1772

- [Salah-Eddin Shaban brought this change]

 redirect: skip URL encoding for host names
 
 This fixes redirects to IDN URLs
 
 Fixes #1441
 Closes #1762
 Reported by: David Lord

- test2032: mark as flaky (again)

- travis: test cmake build on tarball too
 
 Could've prevented #1755

- [Simon Warta brought this change]

 cmake: allow user to override CMAKE_DEBUG_POSTFIX
 
 Closes #1763

- connect-to.d: better language

- connect-to.d: clarified

- bagder/Curl_tvdiff_us: fix the math
 
 Regression since adef394ac5 (released in 7.55.0)
 
 Reported-by: Han Qiao
 Fixes #1769
 Closes #1771

- curl/system.h: add Oracle Solaris Studio
 
 Fixes #1752

- [Alessandro Ghedini brought this change]

 docs: fix typo funtion -> function
 
 Closes #1770

Alessandro Ghedini (12 Aug 2017)
- docs: fix grammar in CURL_SSLVERSION_MAX_DEFAULT description

- docs: fix typo stuct -> struct

Dan Fandrich (12 Aug 2017)
- test1447: require a curl with http support

Daniel Stenberg (11 Aug 2017)
- [Thomas Petazzoni brought this change]

 curl/system.h: support more architectures
 
 The long list of architectures in include/curl/system.h is annoying to
 maintain, and needs to be extended for each and every architecture to
 support.
 
 Instead, let's rely on the __SIZEOF_LONG__ define of the gcc compiler
 (we are in the GNUC condition anyway), which tells us if long is 4
 bytes or 8 bytes.
 
 This fixes the build of libcurl 7.55.0 on architectures such as
 OpenRISC or ARC.
 
 Closes #1766
 
 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

- test2033: this went flaky again
 
 Suspicion: when we enabled the threaded resolver by default.

- test1447: verifies the parse proxy fix in 6e0e152ce5c

- [Even Rouault brought this change]

 parse_proxy(): fix memory leak in case of invalid proxy server name
 
 Fixes the below leak:
 
 $ valgrind --leak-check=full ~/install-curl-git/bin/curl --proxy "http://a:b@/x" http://127.0.0.1
 curl: (5) Couldn't resolve proxy name
 ==5048==
 ==5048== HEAP SUMMARY:
 ==5048== in use at exit: 532 bytes in 12 blocks
 ==5048== total heap usage: 5,288 allocs, 5,276 frees, 445,271 bytes allocated
 ==5048==
 ==5048== 2 bytes in 1 blocks are definitely lost in loss record 1 of 12
 ==5048== at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
 ==5048== by 0x4E6CB79: parse_login_details (url.c:5614)
 ==5048== by 0x4E6BA82: parse_proxy (url.c:5091)
 ==5048== by 0x4E6C46D: create_conn_helper_init_proxy (url.c:5346)
 ==5048== by 0x4E6EA18: create_conn (url.c:6498)
 ==5048== by 0x4E6F9B4: Curl_connect (url.c:6967)
 ==5048== by 0x4E86D05: multi_runsingle (multi.c:1436)
 ==5048== by 0x4E88432: curl_multi_perform (multi.c:2160)
 ==5048== by 0x4E7C515: easy_transfer (easy.c:708)
 ==5048== by 0x4E7C74A: easy_perform (easy.c:794)
 ==5048== by 0x4E7C7B1: curl_easy_perform (easy.c:813)
 ==5048== by 0x414025: operate_do (tool_operate.c:1563)
 ==5048==
 ==5048== 2 bytes in 1 blocks are definitely lost in loss record 2 of 12
 ==5048== at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
 ==5048== by 0x4E6CBB6: parse_login_details (url.c:5621)
 ==5048== by 0x4E6BA82: parse_proxy (url.c:5091)
 ==5048== by 0x4E6C46D: create_conn_helper_init_proxy (url.c:5346)
 ==5048== by 0x4E6EA18: create_conn (url.c:6498)
 ==5048== by 0x4E6F9B4: Curl_connect (url.c:6967)
 ==5048== by 0x4E86D05: multi_runsingle (multi.c:1436)
 ==5048== by 0x4E88432: curl_multi_perform (multi.c:2160)
 ==5048== by 0x4E7C515: easy_transfer (easy.c:708)
 ==5048== by 0x4E7C74A: easy_perform (easy.c:794)
 ==5048== by 0x4E7C7B1: curl_easy_perform (easy.c:813)
 ==5048== by 0x414025: operate_do (tool_operate.c:1563)
 
 Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2984
 Credit to OSS Fuzz for discovery
 
 Closes #1761

- RELEASE-NOTES: synced with 37f2195a9

- curlver: bump to 7.55.1

- openssl: fix "error: this statement may fall through"
 
 A gcc7 warning.

- [David Benjamin brought this change]

 openssl: remove CONST_ASN1_BIT_STRING.
 
 Just making the pointer as const works for the pre-1.1.0 path too.
 
 Closes #1759

- maketgz: remove old *.dist files before making the tarball
 
 To avoid "old crap" unintentionally getting shipped.
 
 Bug: https://curl.haxx.se/mail/lib-2017-08/0050.html
 Reported-by: Christian Weisgerber

Jay Satiro (10 Aug 2017)
- mkhelp.pl: allow executing this script directly
 
 - Enable execute permission (chmod +x)
 
 - Change interpreter to /usr/bin/env perl
 
 Ref: https://github.com/curl/curl/issues/1743

Daniel Stenberg (10 Aug 2017)
- configure: use the threaded resolver backend by default if possible
 
 Closes #1647

- cmake: move cmake_uninstall.cmake to CMake/
 
 Closes #1756

- metalink: fix error: ‘*’ in boolean context, suggest ‘&&’ instead

- dist: fix the cmake build by shipping cmake_uninstall.cmake.in too
 
 Fixes #1755

- travis: verify "make install"
 
 Help-by: Jay Satiro
 Closes #1753

Marcel Raad (10 Aug 2017)
- build: check out *.sln files with Windows line endings
 
 Visual Studio doesn't like LF line endings in solution files and always
 converts them to CRLF when doing changes to the solution. Notably, this
 affects the solutions in the release archive.
 
 Closes https://github.com/curl/curl/pull/1746

- gitignore: ignore top-level .vs folder
 
 This folder is generated when using the CMake build system from within
 Visual Studio.
 
 Closes https://github.com/curl/curl/pull/1746

Jay Satiro (10 Aug 2017)
- digest_sspi: Don't reuse context if the user/passwd has changed
 
 Bug: https://github.com/curl/curl/issues/1685
 Reported-by: paulharris@users.noreply.github.com
 
 Assisted-by: Isaac Boukris
 
 Closes https://github.com/curl/curl/pull/1742

Daniel Stenberg (9 Aug 2017)
- [Adam Sampson brought this change]

 dist: Add dictserver.py/negtelnetserver.py to EXTRA_DIST
 
 These weren't included in the 7.55.0 release, but are required in order
 to run the full test suite.
 
 Closes #1744

- [Adam Sampson brought this change]

 curl: do bounds check using a double comparison
 
 The fix for this in 8661a0aacc01492e0436275ff36a21734f2541bb wasn't
 complete: if the parsed number in num is larger than will fit in a long,
 the conversion is undefined behaviour (causing test1427 to fail for me
 on IA32 with GCC 7.1, although it passes on AMD64 and ARMv7). Getting
 rid of the cast means the comparison will be done using doubles.
 
 It might make more sense for the max argument to also be a double...
 
 Fixes #1750
 Closes #1749

- make install: add 8 missing man pages to the installation

- build: fix 'make install' with configure, install docs/libcurl/* too
 
 Broken since d24838d4da9faa
 
 Reported-by: Bernard Spil

Version 7.55.0 (9 Aug 2017)

Daniel Stenberg (9 Aug 2017)
- RELEASE-NOTES: curl 7.55.0

- THANKS: 20 new contributors in 7.55.0

- [Viktor Szakats brought this change]

 docs/comments: Update to secure URL versions
 
 Closes #1741

- configure: fix recv/send/select detection on Android
 
 ... since they now provide several functions as
 __attribute__((overloadable)), the argument detection logic need
 updates.
 
 Patched-by: destman at github
 
 Fixes #1738
 Closes #1739

Marcel Raad (8 Aug 2017)
- ax_code_coverage.m4: update to latest version
 
 This updates the script to aad5ad5fedb306b39f901a899b7bd305b66c418d
 from August 01, 2017. Notably, this removes the lconv version whitelist.
 
 Closes https://github.com/curl/curl/pull/1716

Daniel Stenberg (7 Aug 2017)
- test1427: verify command line parser integer overflow detection

- curl: detect and bail out early on parameter integer overflows
 
 Make the number parser aware of the maximum limit curl accepts for a
 value and return an error immediately if larger, instead of running an
 integer overflow later.
 
 Fixes #1730
 Closes #1736

- glob: do not continue parsing after a strtoul() overflow range
 
 Added test 1289 to verify.
 
 CVE-2017-1000101
 
 Bug: https://curl.haxx.se/docs/adv_20170809A.html
 Reported-by: Brian Carpenter

- tftp: reject file name lengths that don't fit
 
 ... and thereby avoid telling send() to send off more bytes than the
 size of the buffer!
 
 CVE-2017-1000100
 
 Bug: https://curl.haxx.se/docs/adv_20170809B.html
 Reported-by: Even Rouault
 
 Credit to OSS-Fuzz for the discovery

- [Even Rouault brought this change]

 file: output the correct buffer to the user
 
 Regression brought by 7c312f84ea930d8 (April 2017)
 
 CVE-2017-1000099
 
 Bug: https://curl.haxx.se/docs/adv_20170809C.html
 
 Credit to OSS-Fuzz for the discovery

- easy_events: make event data static
 
 First: this function is only used in debug-builds and not in
 release/real builds. It is used to drive tests using the event-based
 API.
 
 A pointer to the local struct is passed to CURLMOPT_TIMERDATA, but the
 CURLMOPT_TIMERFUNCTION calback can in fact be called even after this
 funtion returns, namely when curl_multi_remove_handle() is called.
 
 Reported-by: Brian Carpenter

- getparameter: avoid returning uninitialized 'usedarg'
 
 Fixes #1728

Marcel Raad (5 Aug 2017)
- [Isaac Boukris brought this change]

 gssapi: fix memory leak of output token in multi round context
 
 When multiple rounds are needed to establish a security context
 (usually ntlm), we overwrite old token with a new one without free.
 Found by proposed gss tests using stub a gss implementation (by
 valgrind error), though I have confirmed the leak with a real
 gssapi implementation as well.
 
 Closes https://github.com/curl/curl/pull/1733

- darwinssl: fix compiler warning
 
 clang complains:
 vtls/darwinssl.c:40:8: error: extra tokens at end of #endif directive
 [-Werror,-Wextra-tokens]
 
 This breaks the darwinssl build on Travis. Fix it by making this token
 a comment.
 
 Closes https://github.com/curl/curl/pull/1734

- CMake: fix CURL_WERROR for MSVC
 
 When using CURL_WERROR in MSVC builds, the debug flags were overridden
 by the release flags and /WX got added twice in debug mode.
 
 Closes https://github.com/curl/curl/pull/1715

Daniel Stenberg (4 Aug 2017)
- RELEASE-NOTES: synced with 561e9217c

- test1010: verify that #1718 is fixed
 
 ... by doing two transfers in nocwd mode and check that there's no
 superfluous CWD command.

- FTP: skip unnecessary CWD when in nocwd mode
 
 ... when reusing a connection. If it didn't do any CWD previously.
 
 Fixes #1718

Marcel Raad (4 Aug 2017)
- travis: explicitly specify dist
 
 This makes the builds more reproducible as travis is currently rolling
 out trusty as default dist [1]. Specifically, this avoids coverage
 check failures when trusty is used as seen in [2] until we figure out
 what's wrong.
 
 [1] https://blog.travis-ci.com/2017-07-11-trusty-as-default-linux-is-coming
 [2] https://github.com/curl/curl/pull/1692
 
 Closes https://github.com/curl/curl/pull/1725

Daniel Stenberg (4 Aug 2017)
- travis: BUILD_TYPE => T
 
 (to make the full line appear nicer on travis web UI)

- travis: add osx build with darwinssl
 
 Closes #1706

- darwin: silence compiler warnings
 
 With a clang pragma and three type fixes
 
 Fixes #1722

- BUILD.WINDOWS: mention buildconf.bat for builds off git

- darwinssl: fix curlssl_sha256sum() compiler warnings on first argument

- test130: verify comments in .netrc

- [Gisle Vanem brought this change]

 netrc: skip lines starting with '#'
 
 Bug: https://curl.haxx.se/mail/lib-2017-08/0008.html

Marcel Raad (3 Aug 2017)
- CMake: set MSVC warning level to 4
 
 The MSVC warning level defaults to 3 in CMake. Change it to 4, which is
 consistent with the Visual Studio and NMake builds. Disable level 4
 warning C4127 for the library and additionally C4306 for the test
 servers to get a clean CURL_WERROR build as that warning is raised in
 some macros in older Visual Studio versions.
 
 Ref: https://github.com/curl/curl/pull/1667#issuecomment-314082794
 Closes https://github.com/curl/curl/pull/1711

Daniel Stenberg (2 Aug 2017)
- CURLOPT_NETRC.3: fix typo in 7e48aa386156f9c2
 
 Reported-by: Viktor Szakats

- CURLOPT_NETRC.3: mention the file name on windows
 
 ... and CURLOPT_NETRC_FILE(3).

- travis: build osx with libressl too

- travis: build osx with openssl too

- tests/server/util: fix curltime mistake from 4dee50b9c80f9

Marcel Raad (1 Aug 2017)
- curl_threads: fix MSVC compiler warning
 
 Use LongToHandle to convert from long to HANDLE in the Win32
 implementation.
 This should fix the following warning when compiling with
 MSVC 11 (2012) in 64-bit mode:
 lib\curl_threads.c(113): warning C4306:
 'type cast' : conversion from 'long' to 'HANDLE' of greater size
 
 Closes https://github.com/curl/curl/pull/1717

Daniel Stenberg (1 Aug 2017)
- BUGS: improved phrasing about security bugs
 
 Reported-by: Max Dymond

- BUGS: clarify how to report security related bugs

- [Brad Spencer brought this change]

 multi: fix request timer management
 
 There are some bugs in how timers are managed for a single easy handle
 that causes the wrong "next timeout" value to be reported to the
 application when a new minimum needs to be recomputed and that new
 minimum should be an existing timer that isn't currently set for the
 easy handle. When the application drives a set of easy handles via the
 `curl_multi_socket_action()` API (for example), it gets told to wait the
 wrong amount of time before the next call, which causes requests to
 linger for a long time (or, it is my guess, possibly forever).
 
 Bug: https://curl.haxx.se/mail/lib-2017-07/0033.html

Jay Satiro (1 Aug 2017)
- curl_setup: Define CURL_NO_OLDIES for building libcurl
 
 .. to catch accidental use of deprecated error codes.
 
 Ref: https://github.com/curl/curl/issues/1688#issuecomment-316764237

Daniel Stenberg (1 Aug 2017)
- [Jeremy Tan brought this change]

 configure: fix the check for IdnToUnicode
 
 Fixes #1669
 Closes #1713

- http: fix response code parser to avoid integer overflow
 
 test 1429 and 1433 were updated to work with the stricter HTTP status line
 parser.
 
 Closes #1714
 Reported-by: Brian Carpenter

Jay Satiro (31 Jul 2017)
- [Dwarakanath Yadavalli brought this change]

 libcurl: Stop using error codes defined under CURL_NO_OLDIES
 
 Fixes https://github.com/curl/curl/issues/1688
 Closes https://github.com/curl/curl/pull/1712

- include.d: clarify --include is only for response headers
 
 Follow-up to 171f8de and de6de94.
 
 Bug: https://github.com/curl/curl/commit/de6de94#commitcomment-23370851
 Reported-by: Daniel Stenberg

Daniel Stenberg (30 Jul 2017)
- [jasjuang brought this change]

 cmake: support make uninstall
 
 Closes #1674

- RELEASE-NOTES: synced with 001701c47

Marcel Raad (29 Jul 2017)
- AppVeyor: now really use CURL_WERROR
 
 It was misspelled as CURL_ERROR in commit
 2d86e8d1286e0fbe3d811e2e87fa0b5e53722db4.
 
 Closes https://github.com/curl/curl/pull/1686

Jay Satiro (29 Jul 2017)
- tool_help: clarify --include is only for response headers
 
 Follow-up to 171f8de.
 
 Ref: https://github.com/curl/curl/issues/1704

- splay: fix signed/unsigned mismatch warning
 
 Follow-up to 4dee50b.
 
 Ref: https://github.com/curl/curl/pull/1693

Daniel Stenberg (28 Jul 2017)
- include.d: clarify that it concerns the response headers
 
 Reported-by: olesteban at github
 Fixes #1704

- [Johannes Schindelin brought this change]

 curl_rtmp: fix a compiler warning
 
 The headers of librtmp declare the socket as `int`, and on Windows, that
 disagrees with curl_socket_t.
 
 Bug: #1652
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- test1323: verify curlx_tvdiff

- timeval: struct curltime is a struct timeval replacement
 
 ... to make all libcurl internals able to use the same data types for
 the struct members. The timeval struct differs subtly on several
 platforms so it makes it cumbersome to use everywhere.
 
 Ref: #1652
 Closes #1693

- darwinssl: fix variable type mistake (regression)
 
 ... which made --tlsv1.2 not work because it would blank the max tls
 version variable.
 
 Reported-by: Nick Miyake
 Bug: #1703

- multi: mention integer overflow risk if using > 500 million sockets
 
 Reported-by: ovidiu-benea@users.noreply.github.com
 
 Closes #1675
 Closes #1683

- checksrc: escape open brace in regex
 
 ... to silence warning.

Kamil Dudka (20 Jul 2017)
- nss: fix a possible use-after-free in SelectClientCert()
 
 ... causing a SIGSEGV in showit() in case the handle used to initiate
 the connection has already been freed.
 
 This commit fixes a bug introduced in curl-7_19_5-204-g5f0cae803.
 
 Reported-by: Rob Sanders
 Bug: https://bugzilla.redhat.com/1436158

- nss: unify the coding style of nss_send() and nss_recv()
 
 No changes in behavior intended by this commit.

Marcel Raad (18 Jul 2017)
- tests/server/resolve.c: fix deprecation warning
 
 MSVC warns that gethostbyname is deprecated. Always use getaddrinfo
 instead to fix this when IPv6 is enabled, also for IPv4 resolves. This
 is also consistent with what libcurl does.
 
 Closes https://github.com/curl/curl/pull/1682

Jay Satiro (17 Jul 2017)
- darwinssl: fix pinnedpubkey build error
 
 - s/SessionHandle/Curl_easy/
 
 Bug: https://github.com/curl/curl/commit/eb16305#commitcomment-23035670
 Reported-by: Gisle Vanem

Marcel Raad (16 Jul 2017)
- rtspd: fix GCC warning after MSVC warning fix
 
 Older GCC warns:
 /tests/server/rtspd.c:1194:10: warning: missing braces around
 initializer [-Wmissing-braces]
 
 Fix this by using memset instead of an initializer.

- libtest: fix MSVC warning C4706
 
 With warning level 4, MSVC warns about assignments within conditional
 expressions. Change the while loop to a do-while loop to fix this. This
 change is also consistent with CODE_STYLE.md.

- sockfilt: suppress conversion warning with explicit cast
 
 MSVC warns when implicitly casting -1 to unsigned long.

- rtspd: fix MSVC level 4 warning
 
 warning C4701: potentially uninitialized local variable 'req' used

- winbuild: re-enable warning C4127 for curl tool
 
 Disabled in cda19a345f6970e22fe8b7a808aeb8f086a21eac. It only needs to
 be disabled for libcurl.

- winbuild: build with warning level 4
 
 This is consistent with 7bc64561a2e63ca93e4b0b31d350773ba80955c2, which
 changed the warning level from 3 to 4 for the Visual Studio project
 files. But disable the level 4 warning C4127 "conditional expression is
 constant", as that one is issued by older versions of the Windows SDK
 as well as curl itself under some circumstances.
 
 Closes https://github.com/curl/curl/pull/1667

Jay Satiro (12 Jul 2017)
- [Max Dymond brought this change]

 travis: install libidn2
 
 Install libidn2 to increase test coverage (IDN tests)
 
 Closes https://github.com/curl/curl/pull/1673

Marcel Raad (12 Jul 2017)
- travis: enable warnings also in release mode
 
 ... to get warnings also on Linux/GCC and OSX/clang.
 
 Closes https://github.com/curl/curl/pull/1666

Daniel Stenberg (12 Jul 2017)
- [Max Dymond brought this change]

 travis: install libssh2
 
 Install libssh2 to increase test coverage (SFTP, SCP)

Marcel Raad (12 Jul 2017)
- system.h: include winsock2.h before windows.h
 
 ... to avoid compiler warnings if the user doesn't want
 WIN32_LEAN_AND_MEAN.

- build: remove WIN32_LEAN_AND_MEAN from individual build systems
 
 It's defined for all build systems in curl_setup.h since commit
 beb08481d01a07a8b10938b1078a5e298b1c2912. This caused macro
 redefinition warnings in the configure builds.
 
 Closes https://github.com/curl/curl/pull/1677

Jay Satiro (11 Jul 2017)
- ISSUE_TEMPLATE: Add a comment not to file security issues on github

Marcel Raad (11 Jul 2017)
- curl_setup: always define WIN32_LEAN_AND_MEAN on Windows
 
 Make sure to always define WIN32_LEAN_AND_MEAN before including any
 Windows headers to avoid pulling in unnecessary headers. This avoids
 unnecessary macro clashes and compiler warnings.
 
 Ref: https://github.com/curl/curl/issues/1562
 Closes https://github.com/curl/curl/pull/1672

Jay Satiro (11 Jul 2017)
- strerror: Preserve Windows error code in some functions
 
 This is a follow-up to af02162 which removed (SET_)ERRNO macros. That
 commit was an earlier draft that I committed by mistake, which was then
 remedied by a5834e5 and e909de6, and now this commit. With this commit
 there is now no difference between the current code and the changes that
 were approved in the final draft.
 
 Thanks-to: Max Dymond, Marcel Raad, Daniel Stenberg, Gisle Vanem
 Ref: https://github.com/curl/curl/pull/1589

Marcel Raad (10 Jul 2017)
- [Max Dymond brought this change]

 tests: Fix up issues with errno in test files
 
 Closes https://github.com/curl/curl/pull/1671

Daniel Stenberg (10 Jul 2017)
- errno: fix non-windows builds after af0216251b94e7

- [Ryan Winograd brought this change]

 make: fix docs build on OpenBSD
 
 Ref: #1591

Marcel Raad (10 Jul 2017)
- ldap: fix MinGW compiler warning
 
 ldap_bind_s is marked as deprecated in w32api's winldap.h shipping with
 the latest original MinGW, resulting in compiler warnings since commit
 f0fe66f13c93d3d0af45d9fb1231c9164e0f9dc8. Fix this for the non-SSPI
 case by using ldap_simple_bind_s again instead of ldap_bind_s with
 LDAP_AUTH_SIMPLE.
 
 Closes https://github.com/curl/curl/pull/1664

- curl-compilers.m4: disable warning spam with Cygwin's clang
 
 When building with Cygwin or MinGW, libtool uses a wrapper executable
 instead of a wrapper script [1], which is written in C and throws
 missing-variable-declarations warnings. Don't enable these warnings on
 Cygwin and MinGW in order to avoid warnings for every executable built,
 which spams the test suite output when using Cygwin's clang.
 
 [1] https://www.gnu.org/software/libtool/manual/html_node/Wrapper-executables.html
 
 Closes https://github.com/curl/curl/pull/1665

Jay Satiro (10 Jul 2017)
- curl_setup_once: Remove ERRNO/SET_ERRNO macros
 
 Prior to this change (SET_)ERRNO mapped to GetLastError/SetLastError
 for Win32 and regular errno otherwise.
 
 I reviewed the code and found no justifiable reason for conflating errno
 on WIN32 with GetLastError/SetLastError. All Win32 CRTs support errno,
 and any Win32 multithreaded CRT supports thread-local errno.
 
 Fixes https://github.com/curl/curl/issues/895
 Closes https://github.com/curl/curl/pull/1589

- tool_getparam: fix potentially uninitialized err

Marcel Raad (9 Jul 2017)
- smb: rename variable to fix shadowing warning
 
 GCC 4.6.3 on travis complains:
 smb.c: In function ‘get_posix_time’:
 smb.c:725:13: error: declaration of ‘time’ shadows a global declaration
 [-Werror=shadow]
 
 Fix this by renaming the variable.

- tool_cb_wrt: fix variable shadowing warning
 
 GCC 4.4 complains:
 tool_cb_wrt.c:81: error: declaration of ‘isatty’ shadows a global
 declaration
 /usr/include/unistd.h:782: error: shadowed declaration is here
 
 Fix this by renaming the variable.
 
 Closes https://github.com/curl/curl/pull/1661

Daniel Stenberg (8 Jul 2017)
- RELEASE-NOTES: synced with be2c999b8

- travis: install stunnel

- valgrind.supp: supress OpenSSL false positive seen on travis

- travis: detect and use valgrind for normal builds
 
 Closes #1653

- travis: add SMB, DICT, TELNET torture to coverage test

- [Paul Harris brought this change]

 cmake: offer CMAKE_DEBUG_POSTFIX when building with MSVC
 
 Removes BUILD_RELEASE_DEBUG_DIRS since it wasn't used anywhere.
 
 Closes #1649

- CURLOPT_POSTFIELDS.3: explain the 100-continue magic better

- [Max Dymond brought this change]

 test1452: add telnet negotiation
 
 Add a basic telnet server for negotiating some telnet options before
 echoing back any data that's sent to it.
 
 Closes #1645

- travis: do more tests in the coverage run
 
 I added a selection of torture and event tests that run "fast enough"

- curl_easy_escape.3: mention the (lack of) encoding
 
 Fixes #1612
 Reported-by: Jeroen Ooms

- [Gisle Vanem brought this change]

 memdebug: don't setbuf() if the file open failed
 
 Bug: https://github.com/curl/curl/issues/828#issuecomment-313475151

- appveyor: enable CURL_WERROR on all builds

- cmake: add CURL_WERROR for enabling "warning as errors"

- [Hannes Magnusson brought this change]

 cmake: remove spurious "-l" from linker flags
 
 Fixes #1552

- test506: skip if threaded-resolver

- runtests: support "threaded-resolver" as a feature
 
 ... to let tests require it or skip if present

- asyn-thread.c: fix unused variable warnings on macOS

- http: s/TINY_INITIAL_POST_SIZE/EXPECT_100_THRESHOLD
 
 Make the name reflect its use better, and add a short comment describing
 what it's for.

- cmake: if inet_pton is used, bump _WIN32_WINNT
 
 ... and make sure inet_pton is always checked for when *not* using Windows,
 which is a regression from 4fc6ebe18.
 
 Idea-by: Sergei Nikulov

- select.h: avoid macro redefinition harder
 
 ... by checking the POLLIN define, as the header file checks don't work
 on Windows.

- inet_pton: fix include on windows to get prototype
 
 inet_pton() exists on Windows and gets used by our cmake builds. Make
 sure the correct header file is included to avoid compiler warnings.
 
 Closes #1639

- TODO: 1.10 auto-detect proxy
 
 Closes #1572

- TODO: HTTP proxy CONNECT is non-blocking now

- cmake: fix send/recv argument scanner for windows
 
 ... by simply trying the Windows argument types first.
 
 Fixes #1640

- RELEASE-NOTES: synced with 596cfb6c0

- [Gisle Vanem brought this change]

 smb: add support for CURLOPT_FILETIME
 
 Bug: https://curl.haxx.se/mail/lib-2017-07/0005.html
 
 Closes #1643

- travis: install nghttp2 on linux builds
 
 Closes #1642

- [Gisle Vanem brought this change]

 smb: fix build for djgpp/MSDOS
 
 bug: https://curl.haxx.se/mail/lib-2017-07/0005.html

- configure: try ldap/lber in reversed order first
 
 When scanning for which LDAP libraries to use, try the -lldap -llber
 combination before the reversed order since it has a greater chance of
 working when linking with libcurl statically.
 
 Fixes #1619
 Closes #1634
 Reported-by: David E. Narváez

- configure: remove checks for 5 functions never used
 
 fork, getprotobyname, inet_addr, perror, uname
 
 closes #1638

- dist: add SMB python deps into the tarball

- [Max Dymond brought this change]

 test1451: add SMB support to the testbed
 
 Add test 1451 which does some very basic SMB testing using the impacket
 SMB server.
 
 Closes #1630

- [Max Dymond brought this change]

 test: add impacket for SMB testing
 
 Import impacket 0.9.15 for use in SMB testing. This was generated by
 doing "pip2.7 install -t . impacket"
 
 Unnecessary files for current testing were deleted.

- travis.yml: use --enable-werror on debug builds
 
 ... to better detect and fault on compiler warnings/errors
 
 Closes #1637

- tool_sleep: typecast to avoid macos compiler warning
 
 tool_sleep.c:54:24: error: implicit conversion loses integer precision:
 'long' to '__darwin_suseconds_t' (aka 'int')
 [-Werror,-Wshorten-64-to-32]

- [Martin Kepplinger brought this change]

 timeval.c: Use long long constant type for timeval assignment
 
 On a 64 bit host, sparse says:
 
 timeval.c:148:15: warning: constant 0x7fffffffffffffff is so big it is long
 timeval.c:149:12: warning: constant 0x7fffffffffffffff is so big it is long
 
 so let's use long long constant types in order to prevent undesired overflow
 failures.
 
 Bug: https://curl.haxx.se/mail/lib-2017-07/0003.html
 
 Closes #1636
 
 Signed-off-by: Martin Kepplinger <martink@posteo.de>

- url: make the original string get used on subsequent transfers
 
 ... since CURLOPT_URL should follow the same rules as other options:
 they remain set until changed or cleared.
 
 Added test 1551 to verify.
 
 Fixes #1631
 Closes #1632
 Reported-by: Pavel Rochnyak

- [Johannes Schindelin brought this change]

 gtls: fix build when sizeof(long) < sizeof(void *)
 
 - Change gnutls pointer/int macros to pointer/curl_socket_t.
 Prior to this change they used long type as well.
 
 The size of the `long` data type can be shorter than that of pointer
 types. This is the case most notably on Windows.
 
 If C99 were acceptable, we could simply use `intptr_t` here. But we
 want to retain C89 compatibility.
 
 Simply use the trick of performing pointer arithmetic with the NULL
 pointer: to convert an integer `i` to a pointer, simply take the
 address of the `i`th element of a hypothetical character array
 starting at address NULL. To convert back, simply cast the pointer
 difference.
 
 Thanks to Jay Satiro for the initial modification to use curl_socket_t
 instead of int/long.
 
 Closes #1617
 
 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Ryan Winograd brought this change]

 unit1399: fix integer overflow
 
 Bug: #1616
 Closes #1633

- [Per Malmberg brought this change]

 cmake: Added compatibility options for older Windows versions
 
 CURL_STATIC_CRT and ENABLE_INET_PTON
 
 Closes #1621

- unit1399: add logging to time comparison
 
 ... to enable tracking down why autobuilds fail on this
 
 Bug: #1616

- make: build the docs subdir only from within src
 
 ... and don't build at all in include
 
 Prompted-by-work-by: Simon Warta
 Ref: #1590
 Closes #1591

- [Max Dymond brought this change]

 test1450: fix up DICT server in torture mode
 
 As per https://github.com/curl/curl/pull/1615, the DICT server is a
 little spammy in torture mode due to the sockets being torn down
 unexpectedly. Fix this by adding some error handling to the handling
 function.
 
 Closes #1629

- [Max Dymond brought this change]

 test1450: add simple testing for DICT
 
 Add a new server which provides a DICT interface. This is intended to
 begin coverage testing for lib/dict.c
 
 Closes #1615

- [Dan Fandrich brought this change]

 test1521: fix out-of-tree builds, broken with 467da3af
 
 The test.h file is no longer in the same directory as the source file,
 so that directory needs to be added to the include path.
 
 Fixes #1627
 Closes #1628

- [Max Dymond brought this change]

 http2: handle PING frames
 
 Add a connection check function to HTTP2 based off RTSP. This causes
 PINGs to be handled the next time the connection is reused.
 
 Closes #1521

- [Max Dymond brought this change]

 handler: refactor connection checking
 
 Add a new type of callback to Curl_handler which performs checks on
 the connection. Alter RTSP so that it uses this callback to do its
 own check on connection health.

- [dmitrykos brought this change]

 openssl: improve fallback seed of PRNG with a time based hash
 
 Fixes #1620

- [Ryan Winograd brought this change]

 progress: prevent resetting t_starttransfer
 
 Prevent `Curl_pgrsTime` from modifying `t_starttransfer` when invoked
 with `TIMER_STARTTRANSFER` more than once during a single request.
 
 When a redirect occurs, this is considered a new request and
 `t_starttransfer` can be updated to reflect the `t_starttransfer` time
 of the redirect request.
 
 Closes #1616
 
 Bug: https://github.com/curl/curl/pull/1602#issuecomment-310267370

- curl_strequal.3: fix typo in SYNOPSIS
 
 Reported-by: Jesse Chisholm
 
 Fixes #1623

- RELEASE-NOTES: synced with ce2c3ebda

Kamil Dudka (28 Jun 2017)
- curl --socks5-{basic,gssapi}: control socks5 auth
 
 Closes https://github.com/curl/curl/pull/1454

- CURLOPT_SOCKS5_AUTH: allowed methods for SOCKS5 proxy auth
 
 If libcurl was built with GSS-API support, it unconditionally advertised
 GSS-API authentication while connecting to a SOCKS5 proxy. This caused
 problems in environments with improperly configured Kerberos: a stock
 libcurl failed to connect, despite libcurl built without GSS-API
 connected fine using username and password.
 
 This commit introduces the CURLOPT_SOCKS5_AUTH option to control the
 allowed methods for SOCKS5 authentication at run time.
 
 Note that a new option was preferred over reusing CURLOPT_PROXYAUTH
 for compatibility reasons because the set of authentication methods
 allowed by default was different for HTTP and SOCKS5 proxies.
 
 Bug: https://curl.haxx.se/mail/lib-2017-01/0005.html
 Closes https://github.com/curl/curl/pull/1454

- socks: deduplicate the code for auth request

- socks: use proxy_user instead of proxy_name
 
 ... to make it obvious what the data is used for

Daniel Stenberg (27 Jun 2017)
- libtest/make: generate lib1521.c
 
 ... instead of having the generated code checked in. This saves space in
 the tarball but primarily automatically adapts to newly added options.
 
 Closes #1614

Jay Satiro (26 Jun 2017)
- tool_getparam: fix memory leak on test 1147 OOM (torture tests)
 
 Bug: https://github.com/curl/curl/pull/1486#issuecomment-310926872
 Reported-by: Dan Fandrich

Dan Fandrich (25 Jun 2017)
- test1537: fixed memory leak on OOM

Marcel Raad (25 Jun 2017)
- test1521: fix compiler warnings
 
 The integer literal 3123123123 doesn't fit into a 32-bit signed
 integer, so GCC with 32-bit long warns in C90 mode:
 this decimal constant is unsigned only in ISO C90 [enabled by default]
 Fix this by using ULONG_MAX, which should fit in any curl_off_t and has
 the correct suffix to not issue any warnings.
 Also adds the missing CURLOPT_REQUEST_TARGET from commit
 9b167fd090f596eac828817d48c247eeae53407f.
 
 Closes https://github.com/curl/curl/pull/1611

Daniel Stenberg (24 Jun 2017)
- curl/system.h: add check for XTENSA for 32bit gcc
 
 Reported-by: Neil Kolban
 Fixes: 1598

- [Henrik S. Gaßmann brought this change]

 winbuild: fix boringssl build
 
 Compile with `WIN32_LEAN_AND_MEAN` which prevents `windows.h` from
 including too much clutter including `wincrypt.h` which in turn contains
 some preprocessor macros that clash with boringssl symbols.
 
 Detect boringssl by checking the existance of `is_boringssl.h` and set
 the corresponding `HAVE_BORINGSSL` for compilation which is used in
 `ldap.c` to undefine the evil macros.
 
 Closes #1610

- progress: progress.timespent needs to be us
 
 follow-up to 64ed44a815e4e to fix test 500 failures

Marcel Raad (24 Jun 2017)
- curl-compilers.m4: fix unknown-warning-option on Apple clang
 
 Since 5598b0bd63f690c151074494ce47ef872f004ab4, clang -v is used to
 detect the clang version. The version number was expected to come after
 the word "version". For Apple clang, this doesn't work as it has its
 own versioning scheme.
 The version number is now first searched after the string
 "based on LLVM". This works for Apple clang before version 7, and also
 for e.g. Ubuntu's clang up to version 3.7. If it's not found and the
 version string contains "Apple LLVM version", clang version 3.7 is
 assumed, which is the version that comes with Xcode 7. Otherwise, the
 version number is still expected after the word "version", which works
 for very old Apple clang versions.
 
 Ref: https://trac.macports.org/wiki/XcodeVersionInfo
 Fixes https://github.com/curl/curl/issues/1606
 Closes https://github.com/curl/curl/pull/1607

Daniel Stenberg (24 Jun 2017)
- progress: fix "time spent", broke in adef394ac

- CURLINFO_REDIRECT_URL.3: mention the CURLOPT_MAXREDIRS case
 
 ... supported since 7.54.1

- maketgz: switch to -6e for xz
 
 To reduce the memory requirement for decompress, and still do almost as
 good compression as with -9e.
 
 Pointed-out-by: Dan Fandrich

- libtest/Makefile: remove unused lib1541 variables

- CONTRIBUTE.md: mention the out-of-tree build test too

- maketgz: switch to xz instead of lzma
 
 The compressed output size seems to be a tad bit smaller, but generally
 xz seems more preferred these days and is used directly by for example
 gentoo instead of bz2.
 
 "Users of LZMA Utils should move to XZ Utils" =>
 https://tukaani.org/lzma/
 
 Closes #1604

- --request-target: instead of --strip-path-slash
 
 ... and CURLOPT_REQUEST_TARGET instead of CURLOPT_STRIP_PATH_SLASH.
 
 This option instead provides the full "alternative" target to use in the
 request, instead of extracting the path from the URL.
 
 Test 1298 and 1299 updated accordingly.
 
 Idea-by: Evert Pot
 Suggestion: https://daniel.haxx.se/blog/2017/06/19/options-with-curl/comment-page-1/#comment-18373
 
 Closes #1593

Marcel Raad (21 Jun 2017)
- lib1521: fix missing-variable-declarations clang warnings
 
 Declare TU-local variables static.

- travis: enable typecheck-gcc warnings
 
 - switch debug and release configurations so that we get an optimized
 build with GCC 4.3+ as required by typecheck-gcc
 - enable warnings-as-errors for release builds
 (which have warnings disabled)
 
 Closes https://github.com/curl/curl/pull/1595

- typecheck-gcc: add support for CURLINFO_OFF_T
 
 typecheck-gcc expected curl_socket_t instead of curl_off_t arguments
 for CURLINFO_OFF_T. Detected by test1521, unfortunately only when run
 locally.
 
 Closes https://github.com/curl/curl/pull/1592

Daniel Stenberg (21 Jun 2017)
- [Simon Warta brought this change]

 ci: whitelist branches to avoid testing feature branches twice

- [Gisle Vanem brought this change]

 lib: fix the djgpp build
 
 Bug: https://github.com/curl/curl/commit/73a2fcea0b4adea6ba342cd7ed1149782c214ae3#commitcomment-22655993

Marcel Raad (20 Jun 2017)
- if2ip: fix compiler warning in ISO C90 mode
 
 remote_scope_id is only used when both HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
 and ENABLE_IPV6 are defined instead of only one of them.

Daniel Stenberg (20 Jun 2017)
- travis: do the distcheck test build out-of-tree as well

- http: add --strip-path-slash and CURLOPT_STRIP_PATH_SLASH
 
 ... to enable sending "OPTIONS *" which wasn't possible previously.
 
 This option currently only works for HTTP.
 
 Added test cases 1298 + 1299 to verify
 
 Fixes #1280
 Closes #1462

- test1521: test getinfo's OFF_T types too
 
 Closes #1588

- lib1521: add curl_easy_getinfo calls to the test set
 
 Also added return value checks to make sure no unexpected return codes
 are used.

- [Simon Warta brought this change]

 automake: use $(MKHELP) variable instead if constant mkhelp.pl
 
 this improves symmetry with the rule above

- [Simon Warta brought this change]

 mkhelp.pl: fix script name in usage text

- RELEASE-NOTES: synced with 3b80d3ca4

- getinfo: return sizes as curl_off_t
 
 This change introduces new alternatives for the existing six
 curl_easy_getinfo() options that return sizes or speeds as doubles. The
 new versions are named like the old ones but with an appended '_T':
 
 CURLINFO_CONTENT_LENGTH_DOWNLOAD_T
 CURLINFO_CONTENT_LENGTH_UPLOAD_T
 CURLINFO_SIZE_DOWNLOAD_T
 CURLINFO_SIZE_UPLOAD_T
 CURLINFO_SPEED_DOWNLOAD_T
 CURLINFO_SPEED_UPLOAD_T
 
 Closes #1511

- PIPELINING_SERVER_BL: cleanup the internal list use
 
 The list was freed incorrectly since the llist refactor of
 cbae73e1dd959. Added test 1550 to verify that it works and avoid future
 regressions.
 
 Reported-by: Pascal Terjan
 
 Fixes #1584
 Closes #1585

- http2: fix OOM crash
 
 torture mode with test 1021 found it

- CURLOPT_PREQUOTE.3: spellfix man page reference

Marcel Raad (18 Jun 2017)
- http_proxy: fix build with http and proxy
 
 After deff7de0eb0e22d2d142b96b9cc84cd8db5d2a48, the build without
 CURL_DISABLE_PROXY and CURL_DISABLE_HTTP was failing because of missing
 includes.

- http_proxy: fix compiler warning
 
 With CURL_DISABLE_PROXY or CURL_DISABLE_HTTP, GCC complained about a
 missing prototype for Curl_connect_free.

Daniel Stenberg (18 Jun 2017)
- TODO: update the TOC too

- TODO: implement support for CURLOPT_PREQUOTE with SFTP
 
 ... also updated the CURLOPT_PREQUOTE.3 man page to mention the correct
 protocol support.
 
 Closes #1514

- tool_wrte_cb: remove check for config == NULL
 
 ... as it really cannot have reached this far with config being NULL,
 thus this is unnecesary and misleading.
 
 Bug: https://news.ycombinator.com/item?id=14577585 and
 https://daniel.haxx.se/blog/2017/06/17/curl-doesnt-spew-binary-anymore/comment-page-1/#comment-18356
 
 Forwarded-to-us-by: Jakub Wilk

- curl: prevent binary output spewed to terminal
 
 ... unless "--output -" is used. Binary detection is done by simply
 checking for a binary zero in early data.
 
 Added test 1425 1426 to verify.
 
 Closes #1512

Marcel Raad (16 Jun 2017)
- Makefile.m32: enable -W for MinGW32 build
 
 The configure-based build also has this in addition to -Wall.
 
 Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable comma clang warning
 
 It usually warns when using commas instead of semicolons or other
 operators by accident.
 
 Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable missing-variable-declarations clang warning
 
 It usually warns when forgetting to declare TU-local variables static.
 
 Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable double-promotion warning
 
 Enable -Wdouble-promotion for both GCC and clang. It warns on implicit
 promotion from float to double.
 
 Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable vla warning for clang
 
 Previously, that warning was only implicitly active in C90 mode.
 Enable it unconditionally as already done for GCC.
 
 Closes https://github.com/curl/curl/pull/1578

Daniel Stenberg (16 Jun 2017)
- http-proxy: fix chunked-encoded CONNECT responses
 
 Regression since 5113ad0424.
 
 ... and remove 'flaky' from test 1061 again
 
 Closes #1579

- http-proxy: deal with EAGAIN
 
 ... the previous code would reset the header length wrongly (since
 5113ad0424). This makes test 1060 reliable again.
 
 Also: make sws send even smaller chunks of data to increase the
 likeliness of this happening.

- libtest/libntlmconnect: fix compiler warnings from f94fcdb

- [Jay Satiro brought this change]

 HTTPS-Proxy: don't offer h2 for https proxy connections
 
 Bug: https://github.com/curl/curl/issues/1254
 
 Closes #1546

- tests: stabilize test 2032 and 2033
 
 Both these tests run the same underlying test code: libntlmconnect.c -
 this test code made some assumptions about socket ordering when it used
 curl_easy_fdset() and when we changed timing or got accidental changes
 in libcurl the tests would fail.
 
 The tests verify that the different transfers keep using the same
 connections, which I now instead made sure by adding the number of bytes
 each transfer gets and then verifies that they always get the same
 amount as when these tests worked.
 
 Closes #1576

- test1148: verify the -# progressbar
 
 Closes #1569

- test1061: mark as flaky
 
 Fails intermittently on travis builds since a few days. Likely due to
 5113ad0424.

Jay Satiro (16 Jun 2017)
- url: refactor the check for Windows drive letter in path
 
 - Move the logic to detect a Windows drive letter prefix
 (eg c: in c:foo) into a function-like macro.
 
 Closes https://github.com/curl/curl/pull/1571

- mk-ca-bundle.pl: Check curl's exit code after certdata download
 
 - No longer allow partial downloads of certdata.
 
 Prior to this change partial downloads were (erroneously?) allowed since
 only the server code was checked to be 200.
 
 Bug: https://github.com/curl/curl/pull/1577
 Reported-by: Matteo B.

Daniel Stenberg (16 Jun 2017)
- dist: add the fuzz dir to the tarball

- configure: disable nghttp2 too if HTTP has been disabled

- http-proxy: fix build with --disable-proxy or --disable-http
 
 Reported-by: Dan Fandrich

- fuzz/README: document how to build
 
 Fixes #1476

- [Frederik B brought this change]

 fuzz: corpora file structure, initial commit

- [Frederik B brought this change]

 fuzz: bring oss-fuzz initial code converted to C89

- http-proxy: only attempt FTP over HTTP proxy
 
 ... all other non-HTTP protocol schemes are now defaulting to "tunnel
 trough" mode if a HTTP proxy is specified. In reality there are no HTTP
 proxies out there that allow those other schemes.
 
 Assisted-by: Ray Satiro, Michael Kaufmann
 
 Closes #1505

- TODO: the generated include file is gone
 
 ... since commit 73a2fcea0b

- curl_setup.h: error out on CURL_WANTS_CA_BUNDLE_ENV use
 
 ... to make it really apparent if there's any user using this on purpose.
 
 Suggested-by: Jay Satiro
 
 Closes #1542

- lib/curl_setup.h: remove CURL_WANTS_CA_BUNDLE_ENV
 
 When this define was set, libcurl would check the environment variable
 named CURL_CA_BUNDLE at run-time and use that CA cert bundle. This
 feature was only defined by the watcom and m32 makefiles and caused
 inconsistent behaviours among libcurls built on different platforms.
 
 The curl tool does already feature its own similar logic and the library
 does not really need it, and it isn't documented libcurl behavior. So
 this change removes it.
 
 Ref: #1538

- test1147: verify -H on a file

- curl: allow --header and --proxy-header read from file
 
 So many headers can be provided as @filename.
 
 Suggested-by: Timothe Litt
 
 Closes #1486

- RELEASE-NOTES: synced with 2ad80eec5

- curl/curlver.h: start working on 7.55.0

- http-proxy: do the HTTP CONNECT process entirely non-blocking
 
 Mentioned as a problem since 2007 (8f87c15bdac63) and of course it
 existed even before that.
 
 Closes #1547

- progress: let "current speed" be UL + DL speeds combined
 
 Bug #1556
 Reported-by: Paul Harris
 Closes #1559

Marcel Raad (14 Jun 2017)
- system.h: fix MinGW build
 
 CURLSYS_PULL_WS2TCPIP_H got renamed to CURL_PULL_WS2TCPIP_H in commit
 73a2fcea0b4adea6ba342cd7ed1149782c214ae3.

Daniel Stenberg (14 Jun 2017)
- timers: store internal time stamps as time_t instead of doubles
 
 This gives us accurate precision and it allows us to avoid storing "no
 time" for systems with too low timer resolution as we then bump the time
 up to 1 microsecond. Should fix test 573 on windows.
 
 Remove the now unused curlx_tvdiff_secs() function.
 
 Maintains the external getinfo() API with using doubles.
 
 Fixes #1531

- dist: make the hugehelp.c not get regenerated unnecessarily
 
 The maketgz script now makes sure the generated hugehelp.c file in the
 tarball is newer than the generated curl.1 man page, so that it doesn't
 have to get unnecessarily rebuilt first thing in a typical build. It
 thus also removes the need for perl to build off a plain release
 tarball.
 
 Fixes #1565

- includes: remove curl/curlbuild.h and curl/curlrules.h
 
 Rely entirely on curl/system.h now.
 
 Introduced in Aug 2008 with commit 14240e9e109f. Now gone.
 
 Fixes #1456

Version 7.54.1 (14 Jun 2017)

Daniel Stenberg (14 Jun 2017)
- release: 7.54.1

Dan Fandrich (13 Jun 2017)
- mk-lib1521.pl: updated to match the test changes in 916ec30a

Daniel Stenberg (13 Jun 2017)
- [Stuart Henderson brought this change]

 libressl: OCSP and intermediate certs workaround no longer needed
 
 lib/vtls/openssl.c has a workaround for a bug with OCSP responses signed
 by intermediate certs, this was fixed in LibreSSL in
 https://github.com/libressl-portable/openbsd/commit/912c64f68f7ac4f225b7d1fdc8fbd43168912ba0
 
 Bug: https://curl.haxx.se/mail/lib-2017-06/0038.html

- url: fix buffer overwrite with file protocol (CVE-2017-9502)
 
 Bug: https://github.com/curl/curl/issues/1540
 Advisory: https://curl.haxx.se/docs/adv_20170614.html
 
 Assisted-by: Ray Satiro
 Reported-by: Marcel Raad

- urlglob: fix division by zero
 
 The multiply() function that is used to avoid integer overflows, was
 itself reason for a possible division by zero error when passed a
 specially formatted glob.
 
 Reported-by: GwanYeong Kim

- configure: update the copyright year in the output

- [ygrek brought this change]

 BINDINGS: update SP-Forth and OCaml urls

Michael Kaufmann (11 Jun 2017)
- FindWin32CACert: Use a temporary buffer on the stack
 
 Don't malloc() the temporary buffer, and use the correct type:
 SearchPath() works with TCHAR, but SearchPathA() works with char.
 Set the buffer size to MAX_PATH, because the terminating null byte
 is already included in MAX_PATH.
 
 Reviewed-by: Daniel Stenberg
 Reviewed-by: Marcel Raad
 
 Closes #1548

Dan Fandrich (11 Jun 2017)
- test1521: fixed OOM handling

Daniel Stenberg (9 Jun 2017)
- RELEASE-PROCEDURE: updated future release dates

- [Paul Harris brought this change]

 gitignore: ignore all vim swap files
 
 Closes #1561

- lib1521: fix compiler warnings on the use of bad 'long' values
 
 Reported-by: Marcel Raad
 Bug: https://github.com/curl/curl/commit/cccac4fb2b20d6ed87da7978408c3ecacc464fe4#commitcomment-22453387

- setopt: check CURLOPT_ADDRESS_SCOPE option range
 
 ... and return error instead of triggering an assert() when being way
 out of range.

Jay Satiro (8 Jun 2017)
- [TheAssassin brought this change]

 cmake: Fix inconsistency regarding mbed TLS include directory
 
 Previously, one had to set MBEDTLS_INCLUDE_DIR to make CMake find the
 headers, but the system complained that mbed TLS wasn't found due to
 MBEDTLS_INCLUDE_DIRS (note the trailing s) was not set. This commit
 attempts to fix that.
 
 Closes https://github.com/curl/curl/pull/1541

Daniel Stenberg (8 Jun 2017)
- [Ryuichi KAWAMATA brought this change]

 examples/multi-uv.c: fix deprecated symbol
 
 Closes #1557

- asyn-ares: s/Curl_expire_latest/Curl_expire

- expire: remove Curl_expire_latest()
 
 With the introduction of expire IDs and the fact that existing timers
 can be removed now and thus never expire, the concept with adding a
 "latest" timer is not working anymore as it risks to not expire at all.
 
 So, to be certain the timers actually are in line and will expire, the
 plain Curl_expire() needs to be used. The _latest() function was added
 as a sort of shortcut in the past that's quite simply not necessary
 anymore.
 
 Follow-up to 31b39c40cf90
 
 Reported-by: Paul Harris
 
 Closes #1555

- [Chris Carlmar brought this change]

 configure: fix link with librtmp when specifying path
 
 Bug: https://curl.haxx.se/mail/lib-2017-06/0017.html

- file: make speedcheck use current time for checks
 
 ... as it would previously just get the "now" timestamp before the
 transfer starts and then not update it again.
 
 Closes #1550

- metalink: remove unused printf() argument

- travis: let some builds *not* use --enable-debug
 
 typecheck-gcc and other things require optimized builds
 
 Closes #1544

- README.md: show the coverall coverage on github

- lib1521: fix compiler warnings

- test1521: make the code < 80 columns wide

- test1121: use stricter types to work with typcheck-gcc

- typecheck-gcc: allow CURLOPT_STDERR to be NULL too

- test1521: test *all* curl_easy_setopt options
 
 mk-lib1521.pl generates a test program (lib1521.c) that calls
 curl_easy_setopt() for every known option with a few typical values to
 make sure they work (ignoring the return codes).
 
 Some small changes were necessary to avoid asserts and NULL accesses
 when doing this.
 
 The perl script needs to be manually rerun when we add new options.
 
 Closes #1543

Dan Fandrich (5 Jun 2017)
- test1538: added "verbose logs" keyword
 
 These error messages are not displayed with --disable-verbose

Daniel Stenberg (5 Jun 2017)
- test1262: verify ftp download with -z for "if older than this"

Marcel Raad (5 Jun 2017)
- curl_ntlm_core: use Curl_raw_toupper instead of toupper
 
 This was the only remaining use of toupper in the entire source code.
 
 Suggested-by: Daniel Stenberg

Daniel Stenberg (4 Jun 2017)
- RELEASE-NOTES: synced with 65ba92650

Marcel Raad (4 Jun 2017)
- curl_ntlm_core: pass unsigned char to toupper
 
 Otherwise, clang on Cygwin64 warns:
 curl_ntlm_core.c:525:35: error: array subscript is of type 'char'
 [-Werror,-Wchar-subscripts]
 dest[2 * i] = (unsigned char)(toupper(src[i]));
 ^~~~~~~~~~~~~~~
 /usr/include/ctype.h:152:25: note: expanded from macro 'toupper'
 (void) __CTYPE_PTR[__x]; (toupper) (__x);})
 ^~~~

Jay Satiro (3 Jun 2017)
- [Mahmoud Samir Fayed brought this change]

 BINDINGS: add Ring binding
 
 Closes https://github.com/curl/curl/pull/1539

Daniel Stenberg (4 Jun 2017)
- CONTRIBUTE.md: mention tests done on pull requests

- travis: add coverage, distcheck and cmake builds
 
 Closes #1534

Marcel Raad (3 Jun 2017)
- libtest: fix int-in-bool-context warnings
 
 GCC 7 complained:
 ‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context]

- libtest: fix implicit-fallthrough warnings with GCC 7

- x509asn1: fix implicit-fallthrough warning with GCC 7

- curl_sasl: fix unused-variable warning
 
 This fixes the following warning with CURL_DISABLE_CRYPTO_AUTH,
 as seen in the autobuilds:
 
 curl_sasl.c:417:9: warning: unused variable 'serverdata'
 [-Wunused-variable]

Daniel Stenberg (3 Jun 2017)
- updatemanpages.pl: error out on too old git version

Marcel Raad (3 Jun 2017)
- cyassl: define build macros before including ssl.h
 
 cyassl/ssl.h needs the macros from cyassl/options.h, so define them
 before including cyassl/ssl.h the first time, which happens in
 urldata.h.
 This broke the build on Ubuntu Xenial, which comes with WolfSSL 3.4.8
 and therefore redefines the symbols from cyassl/options.h instead of
 including the header.
 
 Closes https://github.com/curl/curl/pull/1536

Daniel Stenberg (3 Jun 2017)
- tool_util: remove unused tvdiff_secs and remove tool_ prefix
 
 Closes #1532

- dedotdot: fixed output for ".." and "." only input
 
 Found when updating test 1395, which I did to increase test coverage of
 this source file...
 
 Closes #1535

Marcel Raad (2 Jun 2017)
- mbedtls: make TU-local variable static
 
 mbedtls_x509_crt_profile_fr is only used locally.
 This fixes a missing-variable-declarations warning with clang.

- MD(4|5): silence cast-align clang warning
 
 Unaligned access is on purpose here and the warning is harmless on
 affected architectures. GCC knows that, while clang warns on all
 architectures.

Daniel Stenberg (2 Jun 2017)
- test1538: fix typo

- test1538: verify the libcurl strerror API calls

- curl_endian: remove unused functions
 
 Closes #1529

- test1537: dedicated tests of the URL (un)escape API calls
 
 Closes #1530

- coverage: run event tests too
 
 ... the torture ones are commented out only because they are slooooow.

- build: provide easy code coverage measuring
 
 Closes #1528

- typecheck-gcc.h: check CURLINFO_CERTINFO
 
 ... and update the certinfo.c example accordingly.
 
 Fixes https://github.com/curl/curl/issues/846

- typecheck-gcc.h: check CURLINFO_TLS_SSL_PTR and CURLINFO_TLS_SESSION
 
 ... so that they get the required "struct curl_tlssessioninfo **"
 arguments.

- typecheck-gcc.h: separate getinfo slist checks from other pointers
 
 Fixes #1524

Marcel Raad (1 Jun 2017)
- curl-compilers.m4: escape square brackets in regex
 
 Otherwise, they are removed in the final configure file.
 Also changed sed to "$SED" like in most other calls in this file.

- curl-compilers.m4: fix compiler_num for clang
 
 "clang -dumpversion" always returns "4.2.1", the GCC version that clang
 was initially compatible to. Use "clang -v" instead, which returns the
 actual clang version.
 
 Fixes https://github.com/curl/curl/issues/1522
 Closes https://github.com/curl/curl/pull/1523

Daniel Stenberg (31 May 2017)
- examples/externalsocket.c: s/closesocket/closecb
 
 ... since closesocket is a function in WinSock.
 
 Reported-by: Marcel Raad
 Bug: https://github.com/curl/curl/commit/55fcb8485914700132fd1854c9509b66c955efbe#co
 mmitcomment-22347818

Marcel Raad (31 May 2017)
- lib583: fix compiler warning
 
 Use CURLMcode for variable 'res' and cast to int where necessary
 instead of the other way around. Other tests do the same.
 
 This fixes the following clang warning:
 lib583.c:68:15: warning: cast from function call of type 'CURLMcode' to
 non-matching type 'int' [-Wbad-function-cast]

Daniel Stenberg (31 May 2017)
- CURLOPT_SSH_KEY*.3: typos
 
 Reported-by: Gisle Vanem

- CURLOPT_STREAM_DEPENDS.3: typo

- CURLOPT_FNMATCH_FUNCTION.3: also modified example to avoid fcpp issues

- CURLOPT_FNMATCH_DATA.3: modified example to avoid fcpp issues

- opts: more than 100 more examples for man pages...

- libtest/lib574.c: use correct callback proto

- examples/sampleconv.c: indent changes, made callbacks static

- example/externalsocket.c: make it use CLOSESOCKETFUNCTION too

Marcel Raad (31 May 2017)
- curl-compilers.m4: enable -Wshift-sign-overflow for clang
 
 clang 2.9+ supports -Wshift-sign-overflow, which warns about undefined
 behavior on signed left shifts when shifting by too many places.
 
 Ref: https://github.com/curl/curl/issues/1516
 Closes https://github.com/curl/curl/pull/1517

Daniel Stenberg (31 May 2017)
- CURLOPT_PROXY.3: fix test 1140 breakage

Jay Satiro (31 May 2017)
- build-wolfssl: Sync config with wolfSSL 3.11
 
 wolfSSL configure script relevant changes from 3.10 to 3.11:
 
 - Async threading support added; disabled by default without async
 crypto, which continues to be disabled by default.
 
 wolfSSL configure script relevant changes from 3.11 to 3.11.1 (beta):
 
 - TLS 1.3 beta support added; disabled by default.
 
 For experimenting I put in a comment block the defines needed to enable
 TLS 1.3 support (ie the equivalent of --enable-tls13).

Daniel Stenberg (30 May 2017)
- opts: more examples added to man pages

- docs: clarify NO_PROXY further
 
 Fixes #1208

- CURLOPT_PROXY.3: describe the environment variables more

- transfer: init the infilesize from the postfields...
 
 ... with a strlen() if no size was set, and do this in the pretransfer
 function so that the info is set early. Otherwise, the default strlen()
 done on the POSTFIELDS data never sets state.infilesize.
 
 Reported-by: Vincas Razma
 Bug: #1294

Jay Satiro (29 May 2017)
- test557: fix ubsan runtime error due to int left shift
 
 - Test curl_msnprintf negative int width arg using INT_MIN instead of
 1 << 31 which is undefined behavior.
 
 Closes https://github.com/curl/curl/issues/1516

- mbedtls: fix variable shadow warning
 
 vtls/mbedtls.c:804:69: warning: declaration of 'entropy' shadows a global declaration [-Wshadow]
 CURLcode Curl_mbedtls_random(struct Curl_easy *data, unsigned char *entropy,
 ^~~~~~~

Daniel Stenberg (29 May 2017)
- RELEASE-NOTES: synced with 3aaac8c2f

Dan Fandrich (28 May 2017)
- tests: removed some redundant empty <stdout> sections

- runtests.pl: removed <precommand> feature
 
 This hasn't been used in over a decade. <precheck> can still be used to
 run commands before the main test.

Daniel Stenberg (27 May 2017)
- opts: more examples added in option man pages

Dan Fandrich (27 May 2017)
- runtests.pl: removed unused arguments to valgrindparse

Daniel Stenberg (25 May 2017)
- TODO: 6.4 is done, send telnet data in chunks

- [Phil Crump brought this change]

 docs/CURLOPT_SSLVERSION.3: Correct define name in example
 
 Closes #1509

- ssh: fix 'left' may be used uninitialized
 
 follow-up to f31760e63b4e
 
 Reported-by: Michael Kaufmann
 Bug: https://github.com/curl/curl/pull/1495#issuecomment-303982793

Michael Kaufmann (24 May 2017)
- time: fix type conversions and compiler warnings
 
 Fix bugs and compiler warnings on systems with 32-bit long and
 64-bit time_t.
 
 Reviewed-by: Daniel Stenberg
 
 Closes #1499

Marcel Raad (24 May 2017)
- examples: fix Wimplicit-fallthrough warnings
 
 This is contained in -Wextra with GCC 7.

Daniel Stenberg (24 May 2017)
- [Anatol Belski brought this change]

 winbuild: fix the nghttp2 build
 
 Closes #1321

GitHub (24 May 2017)
- [Sergei Nikulov brought this change]

 LDAP: documentation update per #878 changes (#1506)

Daniel Stenberg (23 May 2017)
- redirect: store the "would redirect to" URL when max redirs is reached
 
 Test 1261 added to verify.
 
 Reported-by: Lloyd Fournier
 
 Fixes #1489
 Closes #1497

GitHub (24 May 2017)
- [Sergei Nikulov brought this change]

 LDAP: fixed checksrc issue

- [Sergei Nikulov brought this change]

 LDAP: using ldap_bind_s on Windows with methods (#878)
 
 * LDAP: using ldap_bind_s on Windows with methods(BASIC/DIGEST/NTLM/AUTONEG)
 
 * ldap: updated per build options handling
 
 * ldap: fixed logic for auth selection

Daniel Stenberg (23 May 2017)
- [Akhil Kedia brought this change]

 cmake: fix build on Ubuntu 14.04
 
 Fixed a syntax error with setting cache variables (The type and
 docstring were missing), resulting in build errors. Quoted the
 CURL_CA_PATH and CURL_CA_BUNDLE otherwise the path was written without
 quotes in C code, resulting in build errors.
 
 Closes #1503
 
 Signed-off-by: Akhil <akhil.kedia@samsung.com>

- url: fix declaration of 'pipe' shadows a global declaration
 
 follow-up to 4cdb1be8246c

Kamil Dudka (22 May 2017)
- memdebug: fix compilation failure
 
 .... caused by a typo in the last commit (fixing issue #1504):
 
 memdebug.c: In function ‘curl_fclose’:
 memdebug.c:444:3: error: implicit declaration of function
 ‘DEBUGDEBUGASSERT’ [-Werror=implicit-function-declaration]

Daniel Stenberg (22 May 2017)
- assert: avoid, use DEBUGASSERT instead!
 
 ... as it does extra checks to actually work.
 
 Reported-by: jonrumsey at github
 Fixes #1504

- [Simon Warta brought this change]

 cmake: remove unused variables: GNUTLS_ENABLED, NSS_ENABLED

- [Simon Warta brought this change]

 cmake: remove CURL_CA_BUNDLE from cmake TODO

- [Simon Warta brought this change]

 cmake: auto detection of CURL_CA_BUNDLE/CURL_CA_PATH
 
 Closes #1461

- [Simon Warta brought this change]

 cmake: add CURL_CA_BUNDLE/CURL_CA_FALLBACK/CURL_CA_PATH options

- [Simon Warta brought this change]

 cmake: Add CURL_CA_FALLBACK to curl_config.h.cmake
 
 This is for symmetry with the autoconf generated curl_config.h.in

- RELEASE-NOTES: synced with 052a14e3c

Michael Kaufmann (20 May 2017)
- tests: stabilize test 1034
 
 Pass the invalid domain name on stdin. On some systems, the test
 framework cannot pass invalid UTF-8 sequences on the command line.
 
 Closes #1488

Daniel Stenberg (20 May 2017)
- ssh: ignore timeouts during disconnect
 
 ... as otherwise it risks not cleaning up the libssh2 handle properly
 which leads to memory leak!
 
 Assisted-by: Joel Depooter
 
 Closes #1495
 Closes #1479
 
 Bug: https://curl.haxx.se/mail/lib-2017-04/0024.html

- ghiper.c/hiperfifo.c: add comment about missing timer functionality
 
 It takes someone to read up on the APIs of these libraries to figure out
 how to do this correctly.
 
 Reported-by: Michael Kaufmann
 
 Closes #1253

- asiohiper.cpp / evhiperfifo.c: deal with negative timerfunction input
 
 That means delete the timer.
 
 Reported-by: Michael Kaufmann
 Ref: #1253

- cmdline-opts/write-out.d: s/-L/--location
 
 Since the man page generator wants the long option name version to
 generate the proper output.

- [Bernhard M. Wiedemann brought this change]

 mkhelp.pl: do not add current time into curl binary
 
 ... as part of hugehelpgz rodata to make build reproducible.
 
 See https://reproducible-builds.org/ for why this is good
 
 Closes #1490

- oauth2-bearer.d: mention the <token> argument

Nick Zitzmann (16 May 2017)
- darwinssl: Fix exception when processing a client-side certificate file
 if no error was raised by the API but the SecIdentityRef was null
 
 Fixes #1450

Daniel Stenberg (16 May 2017)
- curl_sasl: fix build error with CURL_DISABLE_CRYPTO_AUTH + USE_NTLM
 
 Reported-by: wyattoday at github
 Fixes #1487

- docs/cmdline-opts/config.d: edit for language

- RELEASE-NOTES: synced with eb16305e6

- [moparisthebest brought this change]

 SecureTransport/DarwinSSL: Implement public key pinning
 
 Closes #1400

- man pages: fix example syntax errors
 
 follow-up to 5ddad099b42b50

- docs/libcurl/opts: added more examples in man pages

- CURLOPT_HTTPPROXYTUNNEL: clarify, add example

- curl: show the libcurl release date in --version output
 
 ... and support and additional "security patched" date for those who
 enhance older versions that way. Pass on the define CURL_PATCHSTAMP with
 a date for that.
 
 Building with non-release headers shows the date as [unreleased].
 
 Also: this changes the date format generated in the curlver.h file to be
 "YYYY-MM-DD" (no name of the day or month, no time, no time zone) to
 make it easier on the eye and easier to parse. Example (new) date
 string: 2017-05-09
 
 Suggested-by: Brian Childs
 
 Closes #1474

Dan Fandrich (13 May 2017)
- url.c: add a compile-time check that CURL_MAX_WRITE_SIZE is large enough
 
 Some code (e.g. Curl_fillreadbuffer) assumes that this buffer is not
 exceedingly tiny and will break if it is. This same check is already
 done at run time in the CURLOPT_BUFFERSIZE option.

- lib510: don't write past the end of the buffer if it's too small

- tests: added missing keywords "chunked Transfer-Encoding"

Daniel Stenberg (13 May 2017)
- THANKS: add a few missing names
 
 ... I found them in the commit logs from the early years

Dan Fandrich (13 May 2017)
- tests: made a couple of prechecks consistent with others
 
 Also removed a TODO suggesting caching the precheck results. Tests
 showed this would save about 0.1 sec on the total test run time on a
 relatively modern system, an unnoticeable gain at the cost of longer and
 more complicated code. There would also be a danger that a cached test
 result would be inappropriately returned, such as when other test
 dependencies (like environment variables) are different or when the
 precheck causes side effects (like filesystem changes).

Daniel Stenberg (12 May 2017)
- FAQ: add 7.4 to toc
 
 ... and delete trailing whitespace
 
 Fixes #1484

- multi: remove leftover debug infof() calls from e9fd794a6

- pipeline: fix mistakenly trying to pipeline POSTs
 
 The function IsPipeliningPossible() would return TRUE if either
 pipelining OR HTTP/2 were possible on a connection, which would lead to
 it returning TRUE even for POSTs on HTTP/1 connections.
 
 It now returns a bitmask so that the caller can differentiate which kind
 the connection allows.
 
 Fixes #1481
 Closes #1483
 Reported-by: stootill at github

Jay Satiro (12 May 2017)
- [Ron Eldor brought this change]

 mbedtls: Support server renegotiation request
 
 Tested with servers: IIS 7.5; OpenSSL 1.0.2.
 
 Closes https://github.com/curl/curl/pull/1475

Marcel Raad (11 May 2017)
- cookie_interface: fix -Wcomma warning
 
 clang 5.0 complains:
 possible misuse of comma operator here [-Wcomma]

- formdata: fix -Wcomma warning
 
 clang 5.0 complains:
 possible misuse of comma operator here [-Wcomma]
 
 Change the comma to a semicolon to fix that.

Daniel Stenberg (10 May 2017)
- multi: use a fixed array of timers instead of malloc
 
 ... since the total amount is low this is faster, easier and reduces
 memory overhead.
 
 Also, Curl_expire_done() can now mark an expire timeout as done so that
 it never times out.
 
 Closes #1472

- multi: assign IDs to all timers and make each timer singleton
 
 A) reduces the timeout lists drastically
 
 B) prevents a lot of superfluous loops for timers that expires "in vain"
 when it has actually already been extended to fire later on

- [Richard Hsu brought this change]

 tests: remove superfluous test 1399
 
 @MarcelRaad noted that `test1399` causes infinite loop on MinGW.
 Looking into this, seems like it is related to how Windows handles
 CRLF. See https://github.com/curl/curl/commit/9e093f by @mback2k.
 Removing `test1399` as it's identical to `test1326` then with such a
 fix.
 
 Test 1399 was broughy by commit 862b02f8947039e
 
 Closes #1478

Dan Fandrich (9 May 2017)
- tests: make test file names more unique
 
 Include the test number in the names of files written out by tests to
 reduce the chance of accidental duplication and to make it more clear
 which test is associated with which file.

- tests: removed redundant --trace-ascii arguments
 
 This is already added by the test suite; it's not clear why all these
 tests had it, unless it's cargo-culting.

Marcel Raad (9 May 2017)
- tool: fix remaining -Wcast-qual warnings
 
 Avoid casting away low-level const.

Daniel Stenberg (9 May 2017)
- formboundary: convert assert into run-time check
 
 ... to really make sure the boundary fits in the target buffer.
 
 Fixes unused parameter 'buflen' warning.
 
 Reported-by: Michael Kaufmann
 Bug: https://github.com/curl/curl/pull/1468#issuecomment-300078754

Dan Fandrich (9 May 2017)
- tests: list the primary server first in the server section

Daniel Stenberg (8 May 2017)
- curl: generate the --help output
 
 ... using the docs/cmdline-opts/gen.pl script, so that we get all the
 command line option documentation from the same source.
 
 The generation of the list has to be done manually and pasted into the
 source code.
 
 Closes #1465

- tests: updated for modified fake random

- [Jay Satiro brought this change]

 rand: treat fake entropy the same regardless of endianness
 
 When the random seed is purposely made predictable for testing purposes
 by using the CURL_ENTROPY environment variable, process that data in an
 endian agnostic way so the the initial random seed is the same
 regardless of endianness.
 
 - Change Curl_rand to write to a char array instead of int array.
 
 - Add Curl_rand_hex to write random hex characters to a buffer.
 
 Fixes #1315
 Closes #1468
 
 Co-authored-by: Daniel Stenberg
 Reported-by: Michael Kaufmann

Dan Fandrich (8 May 2017)
- tests: give each stunnel.conf file a unique name
 
 Otherwise, subsequent uses of stunnel overwrite the configuration file
 of previous invocations so they can no longer be inspected.

Marcel Raad (8 May 2017)
- tool_msgs: remove wrong cast
 
 Commit 481e0de00a9003b9c5220b120e3fc302d9b0932d changed the variable
 type from int to size_t, so don't cast the result of strlen to int
 anymore.

- tftpd: fix signed/unsigned mismatch warnings
 
 alarm's argument is unsigned.

- libtest: fix MinGW-w64 warnings
 
 long is 32 bits while size_t is 64 bits on MinGW-w64, so
 typecheck-gcc.h complains when using size_t for a long option.
 Also, curl_socket_t is unsigned long long rather than int.

Daniel Stenberg (8 May 2017)
- curl.1: depend the build on the Makefile.inc too
 
 ... to also make it update when we remove files, like we did for
 --environment in commit a8e388dd1095.

- RELEASE-NOTES: synced with e3f84efc32d6b01a

- runtests: fix "use of undefined value" warning in -R handling

Marcel Raad (8 May 2017)
- test537: use correct variable type
 
 Avoids narrowing conversion warnings because rlim_t is usually
 unsigned long.
 
 Closes https://github.com/curl/curl/pull/1469

- sendrecv: fix MinGW-w64 warning
 
 The first argument to select is an int, while curl_socket_t is
 unsigned long long when using WinSock. It's ignored anyway [1].
 
 [1] https://msdn.microsoft.com/en-us/library/windows/desktop/ms740141.aspx

- tool_parsecfg: fix -Wcast-qual warning
 
 Don't convert string literal to char * before assigning it to
 const char *.

- asyn-thread: fix unused macro warnings
 
 Don't do anything in this file if CURLRES_THREADED is not defined.

- tftp: silence bad-function-cast warning
 
 The cases this warns about are handled elsewhere, so just use an
 intermediate variable to silence the warning.

Daniel Stenberg (7 May 2017)
- [canavan at github brought this change]

 buildconf: fix hang on IRIX
 
 Apparently, /usr/bin/m4 ignores the --version parameter and waits for
 input from stdin.
 
 Fixes #1471

- opts: fix bad example formatting \n => \\n
 
 ...to render properly nroff.

- opts: examples added to 8 more libcurl option man pages

- curl: remove tool_writeenv.[ch]
 
 ... and USE_ENVIRONMENT and --environment. It was once added for RISC OS
 support and its platform specific behavior has been annoying ever
 since. Added in commit c3c8bbd3b2688da8e, mostly unchanged since
 then. Most probably not actually used for years.
 
 Closes #1463

Dan Fandrich (6 May 2017)
- runtests.pl: simplify the datacheck read section
 
 Also, document that numbered datacheck sections are possible.

Marcel Raad (5 May 2017)
- tests: fix -Wcast-qual warnings
 
 Avoid casting string literals to non-const char *.

Daniel Stenberg (5 May 2017)
- docs/opts: 24 more man pages now have examples

- docs/opts: 23 more man pages now have examples

- tests/server: run checksrc by default in debug-builds

- curl_slist_append.3: clarify a NULL input creates a new list

Marcel Raad (5 May 2017)
- unit1305: fix compiler warning
 
 calloc and ai_addrlen expect different (usually unsigned) types.

Daniel Stenberg (5 May 2017)
- runtests: use -R for random order
 
 Suggested-by: Dan Fandrich

- runtests: add -o to run test cases in scrambled order
 
 ... instead of numerical order.
 
 Closes #1466

Dan Fandrich (4 May 2017)
- sockfilt.c: shortened too long line

Marcel Raad (4 May 2017)
- tests/server: make string literals const
 
 assign string literals to const char * instead of char * in order to
 avoid a lot of these warnings:
 cast from 'const char *' to 'char *' drops const qualifier
 [-Wcast-qual]

Dan Fandrich (4 May 2017)
- schannel: return a more specific error code for SEC_E_UNTRUSTED_ROOT

- test557: set a known good numeric locale
 
 Windows does not allow setting the locale with environment variables (as
 the test attempted to do), so the test failed when run with a user
 locale that has a comma as radixchar. Changed the test to call
 setlocale() explicitly to ensure that a known working locale is set even
 on Windows.

Daniel Stenberg (4 May 2017)
- curl: fix warning "comma at end of enumerator list"

- test559: verify use of minimum CURLOPT_BUFFERSIZE

Marcel Raad (4 May 2017)
- curl_setup_once: use SEND_QUAL_ARG2 for swrite
 
 SEND_QUAL_ARG2 had to be set, but was never used. Use it in swrite to
 avoid warnings about casting away low-level const.
 
 Closes https://github.com/curl/curl/pull/1464

Daniel Stenberg (4 May 2017)
- CURLINFO_REDIRECT_URL.3: add example

- CURLINFO_EFFECTIVE_URL.3: add example

Marcel Raad (3 May 2017)
- lib: fix compiler warnings
 
 Fix the following warnings when building the tests by using the correct
 types:
 cast from 'const char *' to 'void *' drops const qualifier
 [-Wcast-qual]
 implicit conversion changes signedness [-Wsign-conversion]

- typecheck-gcc: add support for CURLINFO_SOCKET
 
 Closes https://github.com/curl/curl/pull/1452

- typecheck-gcc: add missing string options
 
 Closes https://github.com/curl/curl/pull/1452

Daniel Stenberg (3 May 2017)
- abstract-unix-socket.d: shorten the help text to fit within 79 cols

- RELEASE-NOTES: synced with 862b02f89

- [Richard Hsu brought this change]

 Telnet: Write full buffer instead of byte-by-byte
 
 Previous TODO wanting to write in chunks. We should support writing more
 at once since some TELNET servers may respond immediately upon first
 byte written such as WHOIS servers.
 
 Closes #1389

- curl: non-boolean command line args reject --no- prefixes
 
 ... and instead properly respond with an error message to the user
 instead of silently ignoring.
 
 Fixes #1453
 Closes #1458

Marcel Raad (2 May 2017)
- testpart: remove _MPRINTF_REPLACE
 
 Support for _MPRINTF_REPLACE in mprintf.h was removed in
 55452ebdff47f98bf3cc383f1dfc3623fcaefefd, replaced with curl_printf.h.

Dan Fandrich (2 May 2017)
- gtls: fixed a lingering BUFSIZE reference

Daniel Stenberg (2 May 2017)
- ssh: fix compiler warning from e40e9d7f0de

- url: let CURLOPT_BUFFERSIZE realloc to smaller sizes too
 
 Closes #1449

- BUFSIZE: rename to READBUFFER_*, make separate MASTERBUF_SIZE

- openssl: use local stack for temp storage

- sendf: remove use of BUFSIZE from debug data conversions
 
 The buffer can have other sizes.

- buffer: use data->set.buffer_size instead of BUFSIZE
 
 ... to properly use the dynamically set buffer size!

- krb5: use private buffer for temp string, not receive buffer

- upload: UPLOAD_BUFSIZE is now for the upload buffer

- unit1606: do not print/access buffer
 
 It was a wrong assumption that it could do that!

- http-proxy: use a dedicated CONNECT response buffer
 
 To make it suitably independent of the receive buffer and its flexible
 size.

- transfer: fix minor buffer_size mistake

- failf: use private buffer, don't clobber receive buffer

- pingpong: use the set buffer size

- http2: use the correct set buffer size

- http: don't clobber the receive buffer for timecond

- buffer_size: make sure it always has the correct size
 
 Removes the need for CURL_BUFSIZE

- file: use private buffer for C-L output
 
 ... instead of clobbering the download buffer.

- CURLOPT_BUFFERSIZE: 1024 bytes is now the minimum size
 
 The buffer is needed to receive FTP, HTTP CONNECT responses etc so
 already at this size things risk breaking and smaller is certainly not
 wise.

- ftp: use private buffer for temp storage, not receive buffer

- http: use private user:password output buffer
 
 Don't clobber the receive buffer.

Marcel Raad (1 May 2017)
- anyauthput: remove unused code
 
 The definition of TRUE was introduced in
 4a728747e6f8845e500910e397dfc99aaf4a7984 and is not used anymore since
 e664cd5826d43930fcc5b5dbaedbec94af33184b.
 The usage of intptr_t was removed in
 32e38b8f42477cf5ce3c3fef2fcc9db82f7fb7be.

Jay Satiro (1 May 2017)
- tool: Fix missing prototype warnings for CURL_DOES_CONVERSIONS
 
 - Include tool_convert.h where needed.
 
 Bug: https://github.com/curl/curl/issues/1460
 Reported-by: Gisle Vanem

- curl_setup: Ensure no more than one IDN lib is enabled
 
 Prior to this change it was possible for libcurl to be built with both
 Windows' native IDN lib (normaliz) and libidn2 enabled. It appears that
 doesn't offer any benefit --and could cause a bug-- since libcurl's IDN
 handling is written to use either one but not both.
 
 Bug: https://github.com/curl/curl/issues/1441#issuecomment-297689856
 Reported-by: Gisle Vanem

Marcel Raad (1 May 2017)
- getpart: use correct variable type
 
 This fixes the following clang warning:
 getpart.c:201:17: warning: cast from function call of type 'CURLcode'
 to non-matching type 'int' [-Wbad-function-cast]

- tests: declare TU-local variables static
 
 This fixes missing-variable-declarations warnings when building with
 clang.

- tool_cb_prg: fix double-promotion warning
 
 clang complains:
 tool_cb_prg.c:86:22: error: implicit conversion increases
 floating-point precision: 'float' to 'double'
 [-Werror,-Wdouble-promotion]
 
 Fix this by using a double instead of a float constant.

Dan Fandrich (1 May 2017)
- examples: fixed too long line and too long string warnings

Marcel Raad (30 Apr 2017)
- examples: declare TU-local variables static
 
 This fixes missing-variable-declarations warnings when building with
 clang.

- http2: declare TU-local variables static
 
 This fixes the following clang warnings:
 
 http2.c:184:27: error: no previous extern declaration for non-static
 variable 'Curl_handler_http2' [-Werror,-Wmissing-variable-declarations]
 http2.c:204:27: error: no previous extern declaration for non-static
 variable 'Curl_handler_http2_ssl'
 [-Werror,-Wmissing-variable-declarations]

Dan Fandrich (30 Apr 2017)
- unit1604: fixed indentation

- unit1604: fixed compilation under Windows, broken in the previous commit

- tests: fixed OOM handling of unit tests to abort test
 
 It's dangerous to continue to run the test when a memory alloc fails.

Marcel Raad (29 Apr 2017)
- curl_rtmp: fix missing-variable-declarations warnings
 
 clang complains:
 
 curl_rtmp.c:61:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmp' [-Werror,-Wmissing-variable-declarations]
 curl_rtmp.c:81:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpt' [-Werror,-Wmissing-variable-declarations]
 curl_rtmp.c:101:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpe' [-Werror,-Wmissing-variable-declarations]
 curl_rtmp.c:121:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpte' [-Werror,-Wmissing-variable-declarations]
 curl_rtmp.c:141:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmps' [-Werror,-Wmissing-variable-declarations]
 curl_rtmp.c:161:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpts' [-Werror,-Wmissing-variable-declarations]
 
 Fix this by including the header file.

Dan Fandrich (29 Apr 2017)
- url: fixed a memory leak on OOM while setting CURLOPT_BUFFERSIZE

- tests: added --remote-time tests for remaining protocols that support it

- runtests.pl: support multiline <postcheck> commands

- tool_operate: use utimes instead of obsolescent utime when available

- test1443: test --remote-time

- http-proxy: removed unused argument in CURL_DISABLE_PROXY case
 
 Missed in commit 55c3c02e

Daniel Stenberg (27 Apr 2017)
- cookie_interface.c: changed the other domain to example.com too

- cookie_interface.c: fix cookie domain so the example works

Dan Fandrich (26 Apr 2017)
- Makefile: fix make dist
 
 Commit 80a87e8a broke 'make dist' as it can't handle installing from
 absolute target names. Rearranged the dependencies so the absolute name
 is used for building but the relative name is use for distributing.

Marcel Raad (26 Apr 2017)
- lib: remove unused code
 
 This fixes the following clang warnings:
 macro is not used [-Wunused-macros]
 will never be executed [-Wunreachable-code]
 
 Closes https://github.com/curl/curl/pull/1448

Daniel Stenberg (26 Apr 2017)
- http-proxy: remove unused argument from Curl_proxyCONNECT()

- [Martin Kepplinger brought this change]

 url: declare get_protocol_family() static
 
 get_protocol_family() is not defined static even though there is a
 static local forward declaration. Let's simply make the definition match
 it's declaration.
 
 Bug: https://curl.haxx.se/mail/lib-2017-04/0127.html

- examples: ftpuploadfrommem.c
 
 Uploads data to an FTP site, directly from memory.
 
 Closes #1451

Kamil Dudka (25 Apr 2017)
- nss: load libnssckbi.so if no other trust is specified
 
 The module contains a more comprehensive set of trust information than
 supported by nss-pem, because libnssckbi.so also includes information
 about distrusted certificates.
 
 Reviewed-by: Kai Engert
 Closes #1414

- nss: factorize out nss_{un,}load_module to separate fncs
 
 No change of behavior is intended by this commit.

- nss: do not leak PKCS #11 slot while loading a key
 
 It could prevent nss-pem from being unloaded later on.
 
 Bug: https://bugzilla.redhat.com/1444860

Marcel Raad (25 Apr 2017)
- typecheck-gcc: fix _curl_is_slist_info
 
 Info values starting with CURLINFO_SOCKET expect a curl_socket_t, not a
 curl_slist argument.
 
 This fixes the following GCC warning when building the examples with
 --enable-optimize:
 
 ../../include/curl/typecheck-gcc.h:126:42: warning: call to
 ‘_curl_easy_getinfo_err_curl_slist’ declared with attribute warning:
 curl_easy_getinfo expects a pointer to 'struct curl_slist *' for this
 info [enabled by default]
 sendrecv.c:90:11: note: in expansion of macro ‘curl_easy_getinfo’
 res = curl_easy_getinfo(curl, CURLINFO_ACTIVESOCKET, &sockfd);
 
 Closes https://github.com/curl/curl/pull/1447

Daniel Stenberg (25 Apr 2017)
- curl: set a 100K buffer size by default
 
 Test command 'time curl http://localhost/80GB -so /dev/null' on a Debian
 Linux.
 
 Before (middle performing run out 9):
 
 real 0m28.078s
 user 0m11.240s
 sys 0m12.876s
 
 After (middle performing run out 9)
 
 real 0m26.356s (93.9%)
 user 0m5.324s (47.4%)
 sys 0m8.368s (65.0%)
 
 Also, doing SFTP over a 200 millsecond latency link is now about 6 times
 faster.
 
 Closes #1446

- transfer: remove 'uploadbuf' pointer and cleanup readwrite_upload()
 
 The data->req.uploadbuf struct member served no good purpose, instead we
 use ->state.uploadbuffer directly. It makes it clearer in the code which
 buffer that's being used.
 
 Removed the 'SingleRequest *' argument from the readwrite_upload() proto
 as it can be derived from the Curl_easy struct. Also made the code in
 the readwrite_upload() function use the 'k->' shortcut to all references
 to struct fields in 'data->req', which previously was made with a mix of
 both.

Jay Satiro (25 Apr 2017)
- configure: stop prepending to LDFLAGS, CPPFLAGS
 
 - Change prepends to appends because user's LDFLAGS and CPPFLAGS should
 always come first so they're searched before ours.
 
 Bug: https://github.com/curl/curl/issues/1420
 Reported-by: Helmut K. C. Tessarek

Marcel Raad (25 Apr 2017)
- if2ip: fix -Wcast-align warning
 
 Follow-up to 119037325de02579f5c58256ca2ed2a0aa592c86, which fixed the
 warning in the HAVE_GETIFADDRS block, but not in the
 HAVE_IOCTL_SIOCGIFADDR block.

Dan Fandrich (24 Apr 2017)
- Makefile: avoid use of GNU-specific form of $<
 
 $< is only allowed in implicit rules in some non-GNU makes (e.g. BSD,
 AIX) so avoid use elsewhere by referencing the dependent curl.1 file
 directly instead. This is somewhat tricky because the file is supplied
 in the packaged tar ball (but not in git) but must still be able to be
 rebuilt when its dependencies change. The right thing must happen in
 both tar ball and git source trees, as well as in both in-tree and
 out-of-tree builds.

Kamil Dudka (24 Apr 2017)
- nss: adapt to the new Curl_llist API
 
 This commit fixes compilation failure caused by
 cbae73e1dd95946597ea74ccb580c30f78e3fa73.

Marcel Raad (24 Apr 2017)
- curl-compilers.m4: accept -Og and -Ofast GCC flags
 
 -Og, introduced in GCC 4.8, optimizes for debugging experience.
 -Ofast, introduced in GCC 4.7, builds on -O3 and enables further
 optimizations breaking strict standards compliance.
 When specified in CFLAGS, these were always overridden by -O0 or -O2.
 Fix this by adding them to flags_opt_all.
 
 Ref: https://gcc.gnu.org/onlinedocs/gcc-4.8.0/gcc/Optimize-Options.html
 Ref: https://github.com/curl/curl/pull/1404#issuecomment-296401570
 Closes https://github.com/curl/curl/pull/1440

Daniel Stenberg (24 Apr 2017)
- RELEASE-NOTES: synced with c68fed875

- configure: fix the -ldl check for openssl, add -lpthread check
 
 The check for if -ldl is needed to build with (a statically built)
 openssl was broken. This repairs the check, and adds a check for
 -lpthread as well since OpenSSL 1.1.0+ does in fact require -lpthread so
 only adding -ldl for a static openssl build is no longer enough.
 
 Reported-by: Jay Satiro
 Ref: #1426
 Closes #1427

- llist: fix a comment after cbae73e1dd9
 
 Pointed-it-by: Kevin Ji
 URL: https://github.com/curl/curl/commit/cbae73e1dd95946597ea74ccb580c30f78e3fa73#commitcomment-21872622

Jay Satiro (22 Apr 2017)
- schannel: Don't treat encrypted partial record as pending data
 
 - Track when the cached encrypted data contains only a partial record
 that can't be decrypted without more data (SEC_E_INCOMPLETE_MESSAGE).
 
 - Change Curl_schannel_data_pending to return false in such a case.
 
 Other SSL libraries have pending data functions that behave similarly.
 
 Ref: https://github.com/curl/curl/pull/1387
 
 Closes https://github.com/curl/curl/pull/1392

Daniel Stenberg (22 Apr 2017)
- [Alan Jenkins brought this change]

 multi: clarify condition in curl_multi_wait
 
 `if(nfds || extra_nfds) {` is followed by `malloc(nfds * ...)`.
 
 If `extra_fs` could be non-zero when `nfds` was zero, then we have
 `malloc(0)` which is allowed to return `NULL`. But, malloc returning
 NULL can be confusing. In this code, the next line would treat the NULL
 as an allocation failure.
 
 It turns out, if `nfds` is zero then `extra_nfds` must also be zero.
 The final value of `nfds` includes `extra_nfds`. So the test for
 `extra_nfds` is redundant. It can only confuse the reader.
 
 Closes #1439

Marcel Raad (22 Apr 2017)
- lib: fix maybe-uninitialized warnings
 
 With -Og, GCC complains:
 
 easy.c:628:7: error: ‘mcode’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 
 ../lib/strcase.h:35:29: error: ‘tok_buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 vauth/digest.c:208:9: note: ‘tok_buf’ was declared here
 
 ../lib/strcase.h:35:29: error: ‘tok_buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 vauth/digest.c:566:15: note: ‘tok_buf’ was declared here
 
 Fix this by initializing the variables.

Dan Fandrich (22 Apr 2017)
- gnutls: removed some code when --disable-verbose is configured
 
 This reduces the binary size and fixes a compile warning.

Daniel Stenberg (22 Apr 2017)
- llist: no longer uses malloc
 
 The 'list element' struct now has to be within the data that is being
 added to the list. Removes 16.6% (tiny) mallocs from a simple HTTP
 transfer. (96 => 80)
 
 Also removed return codes since the llist functions can't fail now.
 
 Test 1300 updated accordingly.
 
 Closes #1435

Marcel Raad (21 Apr 2017)
- typecheck-gcc: handle function pointers properly
 
 All the callbacks passed to curl_easy_setopt are defined as function
 pointers. The possibility to pass both functions and function pointers
 was handled for the callbacks that typecheck-gcc.h defined as
 compatible, but not for the public callback types themselves.
 
 This makes all compatible callback types defined in typecheck-gcc.h
 function pointers too and checks all functions uniformly with
 _curl_callback_compatible, which handles both functions and function
 pointers.
 
 A symptom of the problem was a warning in tool_operate.c with
 --disable-libcurl-option and without --enable-debug as that file
 passes the callback functions to curl_easy_setopt directly.
 
 Fixes https://github.com/curl/curl/issues/1403
 Closes https://github.com/curl/curl/pull/1404

Dan Fandrich (21 Apr 2017)
- mbedtls: enable NTLM (& SMB) even if MD4 support is unavailable
 
 In that case, use libcurl's internal MD4 routine. This fixes tests 1013
 and 1014 which were failing due to configure assuming NTLM and SMB were
 always available whenever mbed TLS was in use (which is now true).

Daniel Stenberg (21 Apr 2017)
- tests: remove the html and PDF versions from the tarball

- openssl: fix memory leak in servercert
 
 ... when failing to get the server certificate.

- Revert "src/Makefile.am: avoid explicit $<"
 
 This reverts commit 5b4cbcf11d5100ff793a8e9edbaa6fe1fc7495f5.
 
 Since it broke out-of-tree builds from tarballs. See discussion in #1432

- bump: start working on next release

- src/Makefile.am: avoid explicit $<
 
 ... since apparently "BSD make" doesn't support it.
 
 Reported-by: Thomas Klausner
 Fixes #1432

Version 7.54.0 (19 Apr 2017)

Daniel Stenberg (19 Apr 2017)
- THANKS: add contributors from 7.54.0 release notes

- RELEASE-NOTES: curl 7.54.0

Marcel Raad (18 Apr 2017)
- nss: fix MinGW compiler warnings
 
 This fixes 3 warnings issued by MinGW:
 1. PR_ImportTCPSocket actually has a paramter of type PROsfd instead of
 PRInt32, which is 64 bits on Windows. Fixed this by including the
 corresponding header file instead of redeclaring the function, which is
 supported even though it is in the private include folder. [1]
 2. In 64-bit mode, size_t is 64 bits while CK_ULONG is 32 bits, so an explicit
 narrowing cast is needed.
 3. Curl_timeleft returns time_t instead of long since commit
 21aa32d30dbf319f2d336e0cb68d3a3235869fbb.
 
 [1] https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSPR/Reference/PR_ImportTCPSocket
 
 Closes https://github.com/curl/curl/pull/1393

Daniel Stenberg (18 Apr 2017)
- [Jay Satiro brought this change]

 TLS: Fix switching off SSL session id when client cert is used
 
 Move the sessionid flag to ssl_primary_config so that ssl and proxy_ssl
 will each have their own sessionid flag.
 
 Regression since HTTPS-Proxy support was added in cb4e2be. Prior to that
 this issue had been fixed in 247d890, CVE-2016-5419.
 
 Bug: https://github.com/curl/curl/issues/1341
 Reported-by: lijian996@users.noreply.github.com
 
 The new incarnation of this bug is called CVE-2017-7468 and is documented
 here: https://curl.haxx.se/docs/adv_20170419.html

- [David Benjamin brought this change]

 openssl: don't try to print nonexistant peer private keys
 
 X.509 certificates carry public keys, not private keys. Fields
 corresponding to the private half of the key will always be NULL.
 
 Closes #1425

- [David Benjamin brought this change]

 openssl: fix thread-safety bugs in error-handling
 
 ERR_error_string with NULL parameter is not thread-safe. The library
 writes the string into some static buffer. Two threads doing this at
 once may clobber each other and run into problems. Switch to
 ERR_error_string_n which avoids this problem and is explicitly
 bounds-checked.
 
 Also clean up some remnants of OpenSSL 0.9.5 around here. A number of
 comments (fixed buffer size, explaining that ERR_error_string_n was
 added in a particular version) date to when ossl_strerror tried to
 support pre-ERR_error_string_n OpenSSLs.
 
 Closes #1424

- [David Benjamin brought this change]

 openssl: make SSL_ERROR_to_str more future-proof
 
 Rather than making assumptions about the values, use a switch-case.
 
 Closes #1424

- [Daniel Gustafsson brought this change]

 code: fix typos and style in comments
 
 A few random typos, and minor whitespace cleanups, found in comments
 while reading code.
 
 Closes #1423

Marcel Raad (17 Apr 2017)
- extern-scan.pl: strip trailing CR
 
 This makes test 1135 pass with CRLF checkouts.
 
 Ref: https://github.com/curl/curl/pull/1344#issuecomment-289243166
 Closes https://github.com/curl/curl/pull/1422

- configure.ac: ignore CR after version numbers
 
 Ignore everything after the version numbers in LIBCURL_VERSION and
 LIBCURL_VERSION_NUM to ged rid of the extra CR character.
 This makes tests 1022 and 1023 pass on Linux with a CRLF checkout.
 
 Ref: https://github.com/curl/curl/pull/1344#issuecomment-289243166
 Closes https://github.com/curl/curl/pull/1422

- .gitattributes: force shell scripts to LF
 
 Bash on Linux errors out on CR characters.
 This makes tests 1221 and 1222 pass on Linux with a CRLF checkout.
 
 Ref: https://github.com/curl/curl/pull/1344#issuecomment-289243166
 Closes https://github.com/curl/curl/pull/1422

- unit1303: fix compiler warning
 
 MinGW-w64 complains:
 warning: conversion to 'long int' from 'time_t {aka long long int}' may
 alter its value [-Wconversion]
 Fix this by using the correct type.

Daniel Stenberg (16 Apr 2017)
- RELEASE-NOTES: synced with 1451271e0

- [Larry Stefani brought this change]

 http2: fix handle leak in error path
 
 Add missing newhandle free call in push_promise().
 
 Closes #1416

- [Larry Stefani brought this change]

 mbedtls: fix memory leak in error path
 
 Add missing our_ssl_sessionid free call in mbed_connect_step3().
 
 Closes #1417

Marcel Raad (15 Apr 2017)
- curl-compilers.m4: turn implicit function declarations into errors
 
 This adds -Werror-implicit-function-declaration for GCC 2.95+ so that
 these errors are visible at the point where they occur instead of only
 at link time.
 Implicit function declarations are illegal in C99 and C++ anyway, and
 the same warning has been turned into an error for ICC in commit
 3072c5b8a127057aa922b7c51051bbb4a630b091.
 
 Ref: https://gcc.gnu.org/onlinedocs/gcc-2.95.2/gcc_2.html#SEC8
 Ref: https://curl.haxx.se/mail/lib-2017-04/0001.html
 Closes https://github.com/curl/curl/pull/1419

- test1541: also test for CURL_PULL_WS2TCPIP_H
 
 Ref: https://github.com/curl/curl/issues/1408
 Closes https://github.com/curl/curl/pull/1412

- tests/server/util: prefer <poll.h> over <sys/poll.h>
 
 Follow-up to aa573c3c55cda72ec5ef677d87f6f46a53385f0c
 
 Ref: https://github.com/curl/curl/pull/1406

Daniel Stenberg (11 Apr 2017)
- Curl_expire_latest: ignore already expired timers
 
 If the existing timer is still in there but has expired, the new timer
 should be added.
 
 Reported-by: Rainer Canavan
 Bug: https://curl.haxx.se/mail/lib-2017-04/0030.html
 Closes #1407

- system.h: fix mingw section
 
 Reported-by: Marcel Raad
 Fixes #1408
 Closes #1409

Marcel Raad (11 Apr 2017)
- polarssl: unbreak build with versions < 1.3.8
 
 ssl_session_init was only introduced in version 1.3.8, the penultimate
 version. The function only contains a memset, so replace it with that.
 
 Suggested-by: Jay Satiro
 Fixes https://github.com/curl/curl/issues/1401

- poll: prefer <poll.h> over <sys/poll.h>
 
 The POSIX standard location is <poll.h>. Using <sys/poll.h> results in
 warning spam when using the musl standard library.
 
 Closes https://github.com/curl/curl/pull/1406

Daniel Stenberg (10 Apr 2017)
- [Alexis La Goutte brought this change]

 openssl: fix this statement may fall through [-Wimplicit-fallthrough=]
 
 Closes #1402

Kamil Dudka (10 Apr 2017)
- nss: load CA certificates even with --insecure
 
 ... because they may include an intermediate certificate for a client
 certificate and the intermediate certificate needs to be presented to
 the server, no matter if we verify the peer or not.
 
 Reported-by: thraidh
 Closes #851

Daniel Stenberg (10 Apr 2017)
- RELEASE-NOTES: synced with f9d1e9a27f7e1

Dan Fandrich (10 Apr 2017)
- libcurl-thread.3: fixed a bad macro that caused test 1140 to fail

Daniel Stenberg (9 Apr 2017)
- libcurl-thread.3: also mention threaded-resolver
 
 Reported-by: Alex Bligh
 Bug: https://curl.haxx.se/mail/lib-2017-04/0044.html

- .github/stale.yml: enable the stale bot
 
 Issues and PRs with no activity for 180 days will get marked as stale,
 and if no further activity happens within 14 more days, the issue gets
 closed.
 
 This follows our established policy of not letting stalled bugs "get in
 the way": https://curl.haxx.se/docs/bugs.html#Closing_off_stalled_bugs
 
 Closes #1398

Jay Satiro (8 Apr 2017)
- CURLINFO_SCHEME.3: fix variable type
 
 - Change documented param type to char ** from incorrect long *.

Marcel Raad (8 Apr 2017)
- INSTALL.md: fix secure transport configure arguments
 
 --without-ssl is needed instead of --with-winssl.

- vtls: fix unreferenced variable warnings
 
 ... by moving the variables into the correct #ifdef block.

Daniel Stenberg (7 Apr 2017)
- BUGS: "Bugs in old versions"

- system.h: add section for tcc
 
 Closes #1397

Marcel Raad (7 Apr 2017)
- schannel: fix compiler warnings
 
 When UNICODE is not defined, the Curl_convert_UTF8_to_tchar macro maps
 directly to its argument. As it is declared as a pointer to const and
 InitializeSecurityContext expects a pointer to non-const, both MSVC and MinGW
 issue a warning about implicitly casting away the const. Fix this by declaring
 the variables as pointers to non-const.
 
 Closes https://github.com/curl/curl/pull/1394

- [Isaac Boukris brought this change]

 sspi: print out InitializeSecurityContext() error message
 
 Reported-by: Carsten (talksinmath)
 
 Fixes #1384
 Closes #1395

- gtls: fix compiler warning
 
 Curl_timeleft returns time_t instead of long since commit
 21aa32d30dbf319f2d336e0cb68d3a3235869fbb.

Daniel Stenberg (6 Apr 2017)
- test1606: verify speedcheck

- low_speed_limit: improved function for longer time periods
 
 Previously, periods of fast speed between periods of slow speed would
 not count and could still erroneously trigger a timeout.
 
 Reported-by: Paul Harris
 Fixes #1345
 Closes #1390

- system.h: set sizeof long to 4 on "default 32 bit" systems
 
 Triggered a test failure on test 1541 for the build known as
 "Linux 4.4 i686 tcc 0.9.26 glibc 2.20"

Marcel Raad (6 Apr 2017)
- nss: fix build after e60fe20fdf94e829ba5fce33f7a9d6c281149f7d
 
 Curl_llist_alloc is now Curl_llist_init.
 
 Closes https://github.com/curl/curl/pull/1391

Daniel Stenberg (6 Apr 2017)
- INSTALL.cmake: more problems
 
 and mention specific issues where they are discussed

- test1541: ignore the curl_off_t variable type name comparison
 
 ... the sizes and the formatting strings are what's really important and
 avoids problems with int64_t vs "long long".
 
 Bug: https://curl.haxx.se/mail/lib-2017-04/0019.html

- Revert "configure: prefer 'long long' to int64_t for curl_off_t"
 
 This reverts commit 81284374bf3c670d2050f8562edeb69f060b07cc.
 
 Due to mingw32 brekage.

Marcel Raad (5 Apr 2017)
- tool_operate: fix MinGW compiler warning
 
 MinGW complains:
 tool_operate.c:197:15: error: comparison is always true due to limited range
 of data type [-Werror=type-limits]
 
 Fix this by only doing the comparison if 'long' is large enough to hold the
 constant it is compared with.
 
 Closes https://github.com/curl/curl/pull/1378

- tool_operate: move filetime code to its own function
 
 Ref: https://github.com/curl/curl/pull/1378

Daniel Stenberg (5 Apr 2017)
- configure: prefer 'long long' to int64_t for curl_off_t
 
 Since it is a native type and it makes it less complicated to find a
 matching one in system.h
 
 Bug: https://curl.haxx.se/mail/lib-2017-04/0010.html
 Reported-by: Dan Fandrich
 
 Closes #1388

- [Dániel Bakai brought this change]

 tests: added test for Curl_splaygetbest to unit1309
 
 This checks the new behavior of Curl_splaygetbest, so that the smallest
 node not larger than the key is removed, and FIFO behavior is kept even
 when there are multiple nodes with the same key.
 
 Closes #1358

- [Dániel Bakai brought this change]

 multi: fix queueing of pending easy handles
 
 Multi handles repeatedly invert the queue of pending easy handles when
 used with CURLMOPT_MAX_TOTAL_CONNECTIONS. This is caused by a multistep
 process involving Curl_splaygetbest and violates the FIFO property of
 the multi handle.
 This patch fixes this issue by redefining the "best" node in the
 context of timeouts as the "smallest not larger than now", and
 implementing the necessary data structure modifications to do this
 effectively, namely:
 - splay nodes with the same key are now stored in a doubly-linked
 circular list instead of a non-circular one to enable O(1)
 insertion to the tail of the list
 - Curl_splayinsert inserts nodes with the same key to the tail of
 the same list
 - in case of multiple nodes with the same key, the one on the head of
 the list gets selected

Marcel Raad (4 Apr 2017)
- tool: fix Windows Unicode build
 
 ... by explicitly calling the ANSI versions of Windows API functions where
 required.

Daniel Stenberg (4 Apr 2017)
- [Martin Kepplinger brought this change]

 curl_sasl: declare mechtable static
 
 struct mechtable is only used locally here. It can be declared static.

Jay Satiro (4 Apr 2017)
- [Antti Hätälä brought this change]

 url: don't free postponed data on connection reuse
 
 - Don't free postponed data on a connection that will be reused since
 doing so can cause data loss when pipelining.
 
 Only Windows builds are affected by this.
 
 Closes https://github.com/curl/curl/issues/1380

Daniel Stenberg (4 Apr 2017)
- RELEASE-NOTES: synced with 4f2e348f9b42c69c480

- hash: move key into hash struct to reduce mallocs
 
 This removes one tiny malloc for each hash struct allocated. In a simple
 case like "curl localhost", this save three mallocs.
 
 Closes #1376

- llist: replace Curl_llist_alloc with Curl_llist_init
 
 No longer allocate the curl_llist head struct for lists separately.
 
 Removes 17 (15%) tiny allocations in a normal "curl localhost" invoke.
 
 closes #1381

Jay Satiro (4 Apr 2017)
- easy: silence compiler warning
 
 Safe to silence warning adding time delta of poll, which can trigger on
 Windows since sizeof time_t > sizeof long.
 
 warning C4244: '+=' : conversion from 'time_t' to 'long', possible loss
 of data

Daniel Stenberg (4 Apr 2017)
- [Richlv brought this change]

 docs: minor typo in write-out.d
 
 Closes #1382

- include: curl/system.h is a run-time version of curlbuild.h
 
 system.h is aimed to replace curlbuild.h at a later point in time when
 we feel confident system.h works sufficiently well.
 
 curl/system.h is currently used in parallel with curl/curlbuild.h
 
 curl/system.h determines a data sizes, data types and include file
 status based on available preprocessor defines instead of getting
 generated at build-time. This, in order to avoid relying on a build-time
 generated file that makes it complicated to do 32 and 64 bit bields from
 the same installed set of headers.
 
 Test 1541 verifies that system.h comes to the same conclusion that
 curlbuild.h offers.
 
 Closes #1373

- multi: make curl_multi_wait avoid malloc in the typical case
 
 When only a few additional file descriptors are used, avoid the malloc.
 
 Closes #1377