ADVAPI32: if a crypto provider has no signature, load it anyway

[Mike McCormack <mike@xxxxxxxxxxxxxxx>]

Hi,

Since we have our own rsabase.dll, and it has no signature data in the 
registry, we should load it anyway until we figure out how to sign 
builtin dlls...

Mike


ChangeLog:
* if a crypto provider has no signature, load it anyway
* check return codes of all registry access functions

Index: dlls/advapi32/crypt.c
===================================================================
RCS file: /home/wine/wine/dlls/advapi32/crypt.c,v
retrieving revision 1.29
diff -u -r1.29 crypt.c
--- dlls/advapi32/crypt.c	22 Oct 2003 03:04:30 -0000	1.29
+++ dlls/advapi32/crypt.c	10 Nov 2003 12:10:55 -0000
@@ -258,6 +258,7 @@
 	PSTR imagepath = NULL, keyname = NULL, provname = NULL, temp = NULL;
 	BYTE* signature;
 	DWORD keytype, type, len;
+	ULONG r;
 
 	TRACE("(%p, %s, %s, %ld, %08lx)\n", phProv, pszContainer,
 		pszProvider, dwProvType, dwFlags);
@@ -300,9 +301,10 @@
 			}
 		}
 		CRYPT_Free(keyname);
-		RegQueryValueExA(key, "Name", NULL, &keytype, NULL, &len);
-		if (!len || keytype != REG_SZ)
+		r = RegQueryValueExA(key, "Name", NULL, &keytype, NULL, &len);
+		if( r != ERROR_SUCCESS || !len || keytype != REG_SZ)
 		{
+			TRACE("error %ld at line %d\n", r, __LINE__);
 			RegCloseKey(key);
 			SetLastError(NTE_PROV_TYPE_ENTRY_BAD);
 			goto error;
@@ -313,7 +315,14 @@
 			SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 			goto error;
 		}
-		RegQueryValueExA(key, "Name", NULL, NULL, provname, &len);
+		r = RegQueryValueExA(key, "Name", NULL, NULL, provname, &len);
+		if( r != ERROR_SUCCESS )
+		{
+			TRACE("error %ld at line %d\n", r, __LINE__);
+			RegCloseKey(key);
+			SetLastError(NTE_PROV_TYPE_ENTRY_BAD);
+			goto error;
+		}
 		RegCloseKey(key);
 	} else {
 		if ( !(provname = CRYPT_Alloc(strlen(pszProvider) +1)) )
@@ -328,17 +337,18 @@
 	if (RegOpenKeyA(HKEY_LOCAL_MACHINE, keyname, &key)) goto error;
 	CRYPT_Free(keyname);
 	len = sizeof(DWORD);
-	RegQueryValueExA(key, "Type", NULL, NULL, (BYTE*)&type, &len);
-	if (type != dwProvType)
+	r = RegQueryValueExA(key, "Type", NULL, NULL, (BYTE*)&type, &len);
+	if (r != ERROR_SUCCESS || type != dwProvType)
 	{
 		FIXME("Crypto provider has wrong type (%ld vs expected %ld).\n", type, dwProvType);
 		SetLastError(NTE_BAD_PROV_TYPE);
 		goto error;
 	}
 
-	RegQueryValueExA(key, "Image Path", NULL, &keytype, NULL, &len);
-	if (keytype != REG_SZ)
+	r = RegQueryValueExA(key, "Image Path", NULL, &keytype, NULL, &len);
+	if ( r != ERROR_SUCCESS || keytype != REG_SZ)
 	{
+		TRACE("error %ld at line %d\n", r, __LINE__);
 		RegCloseKey(key);
 		SetLastError(NTE_PROV_TYPE_ENTRY_BAD);
 		goto error;
@@ -349,22 +359,45 @@
 		SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 		goto error;
 	}
-	RegQueryValueExA(key, "Image Path", NULL, NULL, temp, &len);
-
-	RegQueryValueExA(key, "Signature", NULL, &keytype, NULL, &len);
-	if (keytype != REG_BINARY)
+	r = RegQueryValueExA(key, "Image Path", NULL, NULL, temp, &len);
+	if( r != ERROR_SUCCESS )
 	{
+		TRACE("error %ld at line %d\n", r, __LINE__);
 		RegCloseKey(key);
 		SetLastError(NTE_PROV_TYPE_ENTRY_BAD);
 		goto error;
 	}
-	if (!(signature = CRYPT_Alloc(len)))
+
+	r = RegQueryValueExA(key, "Signature", NULL, &keytype, NULL, &len);
+	if ( r == ERROR_SUCCESS )
 	{
-		RegCloseKey(key);
-		SetLastError(ERROR_NOT_ENOUGH_MEMORY);
-		goto error;
+		if ( r != ERROR_SUCCESS || keytype != REG_BINARY)
+		{
+			TRACE("error %ld at line %d\n", r, __LINE__);
+			RegCloseKey(key);
+			SetLastError(NTE_PROV_TYPE_ENTRY_BAD);
+			goto error;
+		}
+		if (!(signature = CRYPT_Alloc(len)))
+		{
+			RegCloseKey(key);
+			SetLastError(ERROR_NOT_ENOUGH_MEMORY);
+			goto error;
+		}
+		r = RegQueryValueExA(key, "Signature", NULL, NULL, signature, &len);
+		if ( r != ERROR_SUCCESS )
+		{
+			TRACE("error %ld at line %d\n", r, __LINE__);
+			RegCloseKey(key);
+			SetLastError(NTE_PROV_TYPE_ENTRY_BAD);
+			goto error;
+		}
+	}
+	else
+	{
+		FIXME("Crypto provider has no signature... probably a builtin\n");
+		signature = NULL;
 	}
-	RegQueryValueExA(key, "Signature", NULL, NULL, signature, &len);
 
 	RegCloseKey(key);
 	len = ExpandEnvironmentStringsA(temp, NULL, 0);
@@ -381,7 +414,7 @@
 		goto error;
 	}
 
-	if (!CRYPT_VerifyImage(imagepath, signature))
+	if (signature && !CRYPT_VerifyImage(imagepath, signature))
 	{
 		CRYPT_Free(signature);
 		SetLastError(NTE_SIGNATURE_FILE_BAD);
@@ -390,7 +423,8 @@
 	pProv = CRYPT_LoadProvider(imagepath);
 	CRYPT_Free(temp);
 	CRYPT_Free(imagepath);
-	CRYPT_Free(signature);
+	if( signature )
+		CRYPT_Free(signature);
 	if (!pProv) {
 		FIXME("Could not load crypto provider from DLL %s\n", debugstr_a(imagepath));
 		/* CRYPT_LoadProvider calls SetLastError */