improve OpenSSL detection (#3390)

Author: wfurt

scripts/get-buildconfig.ps1

@@ -90,6 +90,28 @@ if ("" -eq $Tls) {
         $Tls = "schannel"
     } else {
         $Tls = "openssl"
+        try {
+            # If no Tls was specified, try to guess it based on default OpenSSL version
+            # This is more complicated in attempt to silently deal with missing openssl executable
+            #
+            $pinfo = New-Object System.Diagnostics.ProcessStartInfo
+            $pinfo.FileName = "openssl"
+            $pinfo.Arguments = "version"
+            $pinfo.RedirectStandardError = $true
+            $pinfo.RedirectStandardOutput = $true
+            $pinfo.UseShellExecute = $false
+
+            $p = New-Object System.Diagnostics.Process
+            $p.StartInfo = $pinfo
+            $p.Start() | Out-Null
+            $p.WaitForExit()
+
+            $version = $p.StandardOutput.ReadToEnd()
+            if ($version -like "OpenSSL 3*")
+            {
+                $Tls = "openssl3"
+            }
+        } catch { }
     }
 }
 

submodules/CMakeLists.txt

@@ -339,7 +339,11 @@ else()
     if (QUIC_USE_SYSTEM_LIBCRYPTO)
         include(FindOpenSSL)
         if (OPENSSL_FOUND)
-            if (OPENSSL_VERSION VERSION_EQUAL EXPECTED_OPENSSL_VERSION OR OPENSSL_VERSION VERSION_GREATER EXPECTED_OPENSSL_VERSION)
+            # Get Major.Minor so 3.0 can match 3.0.2.
+            # We cannot use VERSION_GREATER as 3.0 would work for 1.1.1 but they are not compatible.
+            string(FIND ${OPENSSL_VERSION} "." VERSIONLEN REVERSE)
+            string(SUBSTRING ${OPENSSL_VERSION} 0 ${VERSIONLEN}  OPENSSL_MAJORMINOR)
+            if (OPENSSL_VERSION VERSION_EQUAL EXPECTED_OPENSSL_VERSION OR OPENSSL_MAJORMINOR VERSION_EQUAL EXPECTED_OPENSSL_VERSION)
                 target_link_libraries(OpenSSLQuic INTERFACE OpenSSL::Crypto)
             else()
                 message(FATAL_ERROR "OpenSSL ${EXPECTED_OPENSSL_VERSION} not found, found ${OPENSSL_VERSION}")