curl_sspi: Added Curl_sspi_version function

Added new function to get SSPI version as string.
Added required library version.lib to makefiles.
Changed curl_schannel.c to use Curl_sspi_version.

4 files changed, 56 insertions, 4 deletions

diff --git a/lib/Makefile.m32 b/lib/Makefile.m32
index abbcca3e0..11f6d7100 100644
--- a/lib/Makefile.m32
+++ b/lib/Makefile.m32
@@ -190,6 +190,7 @@ endif
 endif
 ifdef SSPI
   CFLAGS += -DUSE_WINDOWS_SSPI
+  DLL_LIBS += -lversion
 endif
 ifdef SPNEGO
   CFLAGS += -DHAVE_SPNEGO
diff --git a/lib/curl_schannel.c b/lib/curl_schannel.c
index c9a390638..c7b51cb96 100644
--- a/lib/curl_schannel.c
+++ b/lib/curl_schannel.c
@@ -957,10 +957,10 @@ void Curl_schannel_cleanup() {
 
 size_t Curl_schannel_version(char *buffer, size_t size)
 {
-  unsigned long version = s_pSecFn ? s_pSecFn->dwVersion : 0;
-  return snprintf(buffer, size, "Schannel/%d.%d.%d.%d",
-                  (version>>0)&0xff, (version>>8)&0xff,
-                  (version>>16)&0xff, (version>>24)&0xff);
+  char* version = Curl_sspi_version();
+  size = snprintf(buffer, size, "Schannel-%s", version);
+  free(version);
+  return size;
 }
 
 #endif /* USE_SCHANNEL */
diff --git a/lib/curl_sspi.c b/lib/curl_sspi.c
index d915710f8..d3533a293 100644
--- a/lib/curl_sspi.c
+++ b/lib/curl_sspi.c
@@ -120,6 +120,55 @@ Curl_sspi_global_cleanup(void)
 
 
 /*
+ * Curl_sspi_version()
+ *
+ * This function returns a string representing the SSPI library version.
+ * It will in any case return a usable string pointer which needs to be freed.
+ */
+char *
+Curl_sspi_version()
+{
+  VS_FIXEDFILEINFO *version_info = NULL;
+  LPTSTR version = NULL;
+  LPTSTR path = NULL;
+  LPVOID data = NULL;
+  DWORD size, handle;
+
+  if(s_hSecDll) {
+    path = malloc(MAX_PATH);
+    if(path) {
+      if(GetModuleFileName(s_hSecDll, path, MAX_PATH)) {
+        size = GetFileVersionInfoSize(path, &handle);
+        if(size) {
+          data = malloc(size);
+          if(data) {
+            if(GetFileVersionInfo(path, handle, size, data)) {
+              if(VerQueryValue(data, "\\", &version_info, &handle)) {
+                version = curl_maprintf("SSPI/%d.%d.%d.%d",
+                  (version_info->dwProductVersionMS>>16)&0xffff,
+                  (version_info->dwProductVersionMS>>0)&0xffff,
+                  (version_info->dwProductVersionLS>>16)&0xffff,
+                  (version_info->dwProductVersionLS>>0)&0xffff);
+              }
+            }
+            free(data);
+          }
+        }
+      }
+      free(path);
+    }
+    if(!version)
+      version = strdup("SSPI/Unknown");
+  }
+
+  if(!version)
+    version = strdup("");
+
+  return version;
+}
+
+
+/*
  * Curl_sspi_status(SECURIY_STATUS status)
  *
  * This function returns a string representing an SSPI status.
@@ -219,6 +268,7 @@ Curl_sspi_status(SECURITY_STATUS status)
   return curl_maprintf("%s (0x%08X)", status_const, status);
 }
 
+
 /*
  * Curl_sspi_status_msg(SECURITY_STATUS status)
  *
diff --git a/lib/curl_sspi.h b/lib/curl_sspi.h
index 817487830..1865ee490 100644
--- a/lib/curl_sspi.h
+++ b/lib/curl_sspi.h
@@ -63,6 +63,7 @@
 
 CURLcode Curl_sspi_global_init(void);
 void Curl_sspi_global_cleanup(void);
+char* Curl_sspi_version();
 char* Curl_sspi_status(SECURITY_STATUS status);
 char* Curl_sspi_status_msg(SECURITY_STATUS status);