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Implements a cookie-date parsing utility #76

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Merged
merged 1 commit into from
Jun 19, 2017
Merged

Implements a cookie-date parsing utility #76

merged 1 commit into from
Jun 19, 2017

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aaa2000
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@aaa2000 aaa2000 commented Jun 12, 2017 •
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Q A
Bug fix? no
New feature? yes
BC breaks? no
Deprecations? no
Related tickets mentioned in php-http/client-common#46
Documentation No
License MIT

What's in this PR?

Implementation of a cookie-date parsing algorithm mentionned in php-http/client-common#46. I preferred to use a simpler method from https://github.com/symfony/symfony/blob/master/src/Symfony/Component/BrowserKit/Cookie.php#L199.

Example Usage

$datetime = CookieUtil::parseDate('Friday, 31 Jul 20 08:49:37 GMT');

Checklist

  • Updated CHANGELOG.md to describe BC breaks / deprecations | new feature | bugfix
  • Documentation pull request created (if not simply a bugfix)
aaa2000
aaa2000 commented Jun 12, 2017
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src/CookieUtil.php
* @var array
*/
private static $dateFormats = array(
'D, d M y H:i:s T',
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I add the format "Tuesday, 31 Mar 99 07:42:12 GMT" at the line 14 mentionned in php-http/client-common#46
aaa2000
aaa2000 commented Jun 12, 2017
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src/CookieUtil.php Outdated
* @see https://github.com/symfony/symfony/blob/master/src/Symfony/Component/BrowserKit/Cookie.php
*
* @param string $dateValue
* @return \DateTime|false
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Should I rather throw an exception ?
@aaa2000 aaa2000 force-pushed the cookie-date-parsing branch 2 times, most recently from eec2be5 to e83fd58 Compare June 12, 2017 20:53
dbu
dbu approved these changes Jun 13, 2017
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thanks. i agree to not create a dependency on symfony browser kit for just this function.

just one question: is date_create alone not good enough?
CHANGELOG.md Outdated

## Unreleased

###
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please use the title "Added" here
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Fix
@aaa2000
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aaa2000 commented Jun 13, 2017

@dbu if we use only date_create, the tests will fail for this format Fri, 31-07-20 08:49:37 GMT.
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aaa2000 commented Jun 13, 2017

But this format is not conform to the rfc https://tools.ietf.org/html/rfc6265#section-5.1.1

month = "Jan" | "Feb" | "Mar" | "Apr" | "May" | "Jun" | "Jul" | "Aug" | "Sep" | "Oct" | "Nov" | "Dec"

it has been added to manage unusual cookie dates, see commit symfony/browser-kit@47f146d
dbu
dbu approved these changes Jun 14, 2017
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thanks for the clarification. seems good then, +1 from me.

regarding the build fail, thats a hhvm setup issue. i created #77. if we want to be dead sure it all works out, we can wait for that to merge and then rebase this branch on master afterwards.
@aaa2000 aaa2000 force-pushed the cookie-date-parsing branch from e3ce2ef to b4d1e0e Compare June 14, 2017 22:10
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aaa2000 commented Jun 14, 2017

Rebase done

I added more tests from library mentioned in php-http/client-common#46 https://github.com/salesforce/tough-cookie/blob/master/test/date_test.js except 01 Jan 1600 00:00:00 GMT which should not pass because the date before 1601.

Use only the function date_create all tests pass except Fri, 31-07-20 08:49:37 GMT. Format that does not appear to comply with RFC.

Maybe, CookieUtil::parseDate is not really useful.
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aaa2000 commented Jun 14, 2017

tests failed on PHP 5.4 and HHVM
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aaa2000 commented Jun 14, 2017

I will fix later

http://php.net/manual/en/class.datetime.php#datetime.changelog

5.4.24	The COOKIE constant was changed to reflect RFC 1036 using a four digit year rather than a two digit year (RFC 850) as prior versions.
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dbu commented Jun 15, 2017 •
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as hhvm works on master, did we just discover a difference between hhvm and php here?

the php 5.4 build fails on the same things, formatting the date: expected "Friday, 31-Jul-2020 08:49...", but got "Friday, 31-Jul-2020 08:49...". - unfortunately its cut off before any differences show up.

it seems to me that format(\DateTime::COOKIE) uses different formats in different versions. as we don't want to test the \DateFormat::format method, maybe just use an explicit formatting string so you can compare with a well known outcome?
dbu
dbu reviewed Jun 15, 2017
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src/CookieUtil.php Outdated
*
* @param string $dateValue
*
* @return \DateTime|false
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i would prefer throwing an exception when the date can't be parsed
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@aaa2000 aaa2000 Jun 15, 2017 •
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a php exception like UnexpectedValueException or Http\Message\Exception\UnexpectedValueException ?
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aaa2000 commented Jun 15, 2017

Yes it is format(\DateTime::COOKIE) https://3v4l.org/VpvRp, as you said, I will use use an explicit formatting string. I would do it tonight.
@aaa2000 aaa2000 force-pushed the cookie-date-parsing branch from d5ec782 to caa5344 Compare June 16, 2017 21:09
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aaa2000 commented Jun 16, 2017

throws an exception when the date can't be parsed and commits squashed
fbourigault
fbourigault approved these changes Jun 19, 2017
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I'm not a cookie date expert, but looks good to me.
@dbu dbu merged commit f12663b into php-http:master Jun 19, 2017
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dbu commented Jun 19, 2017

thanks a lot @aaa2000 !
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