Bug 27526 - Compatibility fix for old windows sytems

Patch from Gianluigi Tiesi

3 files changed, 53 insertions, 14 deletions

diff --git a/src/fccache.c b/src/fccache.c
index d8102d7..db7561f 100644
--- a/src/fccache.c
+++ b/src/fccache.c
@@ -36,9 +36,6 @@
 #if defined(HAVE_MMAP) || defined(__CYGWIN__)
 #  include <unistd.h>
 #  include <sys/mman.h>
-#elif defined(_WIN32)
-#  define _WIN32_WINNT 0x0500
-#  include <windows.h>
 #endif
 
 #ifndef O_BINARY
diff --git a/src/fcint.h b/src/fcint.h
index fd60e7a..0dfc236 100644
--- a/src/fcint.h
+++ b/src/fcint.h
@@ -55,9 +55,17 @@
 #endif
 
 #ifdef _WIN32
-#define FC_SEARCH_PATH_SEPARATOR ';'
+#  define _WIN32_WINNT 0x0500
+#  define WIN32_LEAN_AND_MEAN
+#  define STRICT
+#  include <windows.h>
+typedef UINT (WINAPI *pfnGetSystemWindowsDirectory)(LPSTR, UINT);
+typedef HRESULT (WINAPI *pfnSHGetFolderPathA)(HWND, int, HANDLE, DWORD, LPSTR);
+extern pfnGetSystemWindowsDirectory pGetSystemWindowsDirectory;
+extern pfnSHGetFolderPathA pSHGetFolderPathA;
+#  define FC_SEARCH_PATH_SEPARATOR ';'
 #else
-#define FC_SEARCH_PATH_SEPARATOR ':'
+#  define FC_SEARCH_PATH_SEPARATOR ':'
 #endif
 
 #define FC_DBG_MATCH	1
diff --git a/src/fcxml.c b/src/fcxml.c
index 79dfc0b..708e131 100644
--- a/src/fcxml.c
+++ b/src/fcxml.c
@@ -53,10 +53,6 @@
 #endif /* ENABLE_LIBXML2 */
 
 #ifdef _WIN32
-#define _WIN32_WINNT 0x0500
-#define STRICT
-#include <windows.h>
-#undef STRICT
 #include <mbstring.h>
 #endif
 
@@ -2327,11 +2323,7 @@ FcEndElement(void *userData, const XML_Char *name)
 	{
 	    int rc;
 	    data = buffer;
-#if _WIN32_WINNT >= 0x0500
-	    rc = GetSystemWindowsDirectory (buffer, sizeof (buffer) - 20);
-#else
-	    rc = GetWindowsDirectory (buffer, sizeof (buffer) - 20);
-#endif
+	    rc = pGetSystemWindowsDirectory (buffer, sizeof (buffer) - 20);
 	    if (rc == 0 || rc > sizeof (buffer) - 20)
 	    {
 		FcConfigMessage (parse, FcSevereError, "GetSystemWindowsDirectory failed");
@@ -2381,6 +2373,27 @@ FcEndElement(void *userData, const XML_Char *name)
 		strcat (data, "\\");
 	    strcat (data, "fontconfig\\cache");
 	}
+	else if (strcmp (data, "LOCAL_APPDATA_FONTCONFIG_CACHE") == 0)
+	{
+	    char szFPath[MAX_PATH + 1];
+	    size_t len;
+	    FcStrFree (data);
+	    if (!(pSHGetFolderPathA && SUCCEEDED(pSHGetFolderPathA(NULL, /* CSIDL_LOCAL_APPDATA */ 28, NULL, 0, szFPath))))
+	    {
+		FcConfigMessage (parse, FcSevereError, "SHGetFolderPathA failed");
+		break;
+	    }
+	    strncat(szFPath, "\\fontconfig\\cache", MAX_PATH - 1 - strlen(szFPath));
+	    len = strlen(szFPath) + 1;
+	    data = malloc(len);
+	    if (!data)
+	    {
+		FcConfigMessage (parse, FcSevereError, "out of memory");
+		break;
+	    }
+	    FcMemAlloc (FC_MEM_STRING, len);
+	    strncpy(data, szFPath, len);
+	}
 #endif
 	if (!FcStrUsesHome (data) || FcConfigHome ())
 	{
@@ -2694,6 +2707,11 @@ bail0:
     return ret || !complain;
 }
 
+#ifdef _WIN32
+pfnGetSystemWindowsDirectory pGetSystemWindowsDirectory = NULL;
+pfnSHGetFolderPathA pSHGetFolderPathA = NULL;
+#endif
+
 FcBool
 FcConfigParseAndLoad (FcConfig	    *config,
 		      const FcChar8 *name,
@@ -2714,6 +2732,22 @@ FcConfigParseAndLoad (FcConfig	    *config,
     void	    *buf;
 #endif
 
+#ifdef _WIN32
+    if (!pGetSystemWindowsDirectory)
+    {
+        HMODULE hk32 = GetModuleHandleA("kernel32.dll");
+        if (!(pGetSystemWindowsDirectory = (pfnGetSystemWindowsDirectory) GetProcAddress(hk32, "GetSystemWindowsDirectoryA")))
+            pGetSystemWindowsDirectory = (pfnGetSystemWindowsDirectory) GetWindowsDirectory;
+    }
+    if (!pSHGetFolderPathA)
+    {
+        HMODULE hSh = LoadLibraryA("shfolder.dll");
+        /* the check is done later, because there is no provided fallback */
+        if (hSh)
+            pSHGetFolderPathA = (pfnSHGetFolderPathA) GetProcAddress(hSh, "SHGetFolderPathA");
+    }
+#endif
+
     filename = FcConfigFilename (name);
     if (!filename)
 	goto bail0;