ci: enable OpenSSL v1.1.0 on Appveyor

Author: sigiesec

appveyor.yml

@@ -13,6 +13,18 @@ environment:
 
 cache:
  - c:\deps -> appveyor.yml
+ 
+# borrowed from https://github.com/FreeTDS/freetds
+install:
+ # xidel (xpath command line tool)
+ - appveyor DownloadFile "https://downloads.sourceforge.net/project/videlibri/Xidel/Xidel 0.9.6/xidel-0.9.6.win32.zip"
+ - 7z x xidel-0.9.6.win32.zip xidel.exe
+ # detect version of Windows OpenSSL binaries published by the Shining Light Productions crew
+ - xidel https://slproweb.com/products/Win32OpenSSL.html --extract "(//td/a[starts-with(@href, '/download') and starts-with(text(), 'Win32 OpenSSL') and ends-with(text(), 'Light')])[1]/translate(substring-before(substring-after(text(), 'Win32 OpenSSL v'), ' Light'), '.', '_')" > openssl_ver.txt
+ - set /P OPENSSL_VER=< openssl_ver.txt
+ # OpenSSL
+ - appveyor DownloadFile https://slproweb.com/download/Win%BITS%OpenSSL-%OPENSSL_VER%.exe
+ - "Win%BITS%OpenSSL-%OPENSSL_VER%.exe /SP- /SILENT /SUPPRESSMSGBOXES /NORESTART"
 
 before_build:
  - cmake -DBUILD_SHARED_LIBS=ON -DBUILD_STATIC_LIBS=ON -DBUILD_TESTS=ON -DENABLE_SSL_SUPPORT=True -G"%GENERATOR%" .