Added fallback code for server version identification.

Good news: Sequel Pro can now connect to sphinxql server.
Bad news: It will treat it like a MySQL 2 server (or whatever version of Sphinx is running)

Author: dmoagx

Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Max Packet Size.m

@@ -108,6 +108,10 @@ - (void)_updateMaxQuerySize
 
 	// Make a standard query to the server to retrieve the information
 	SPMySQLResult *result = [self queryString:packetQueryString];
+	if(!result) { // query fails on sphinxql
+		NSLog(@"Query for max_allowed_packet failed: %@ (%lu) (on %@)", [self lastErrorMessage], [self lastErrorID], [self serverVersionString]);
+		return;
+	}
 	[result setReturnDataAsStrings:YES];
 
 	// Get the maximum size string

Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Server Info.m

@@ -42,10 +42,15 @@ @implementation SPMySQLConnection (Server_Info)
  */
 - (NSString *)serverVersionString
 {
-	if (serverVersionString) {
-		return [NSString stringWithString:serverVersionString];
+	if (serverVariableVersion) {
+		return [NSString stringWithString:serverVariableVersion];
 	}
 
+#warning FIXME: There is probably a race condition here with -[self _disconnect]
+	if(mySQLConnection) {
+		return [self _stringForCString:mysql_get_server_info(mySQLConnection)];
+	}
+	
 	return nil;
 }
 
@@ -54,9 +59,9 @@ - (NSString *)serverVersionString
  */
 - (NSUInteger)serverMajorVersion
 {
-	
-	if (serverVersionString != nil) {
-		NSString *s = [[serverVersionString componentsSeparatedByString:@"."] objectAtIndex:0];
+	NSString *ver;
+	if ((ver = [self serverVersionString]) != nil) {
+		NSString *s = [[ver componentsSeparatedByString:@"."] objectAtIndex:0];
 		return (NSUInteger)[s integerValue];
 	} 
 
@@ -68,8 +73,9 @@ - (NSUInteger)serverMajorVersion
  */
 - (NSUInteger)serverMinorVersion
 {
-	if (serverVersionString != nil) {
-		NSString *s = [[serverVersionString componentsSeparatedByString:@"."] objectAtIndex:1];
+	NSString *ver;
+	if ((ver = [self serverVersionString]) != nil) {
+		NSString *s = [[ver componentsSeparatedByString:@"."] objectAtIndex:1];
 		return (NSUInteger)[s integerValue];
 	}
 
@@ -81,8 +87,9 @@ - (NSUInteger)serverMinorVersion
  */
 - (NSUInteger)serverReleaseVersion
 {
-	if (serverVersionString != nil) {
-		NSString *s = [[serverVersionString componentsSeparatedByString:@"."] objectAtIndex:2];
+	NSString *ver;
+	if ((ver = [self serverVersionString]) != nil) {
+		NSString *s = [[ver componentsSeparatedByString:@"."] objectAtIndex:2];
 		return (NSUInteger)[[[s componentsSeparatedByString:@"-"] objectAtIndex:0] integerValue];
 	}
 
@@ -98,9 +105,10 @@ - (NSUInteger)serverReleaseVersion
  */
 - (BOOL)serverVersionIsGreaterThanOrEqualTo:(NSUInteger)aMajorVersion minorVersion:(NSUInteger)aMinorVersion releaseVersion:(NSUInteger)aReleaseVersion
 {
-	if (!serverVersionString) return NO;
+	NSString *ver;
+	if (!(ver = [self serverVersionString])) return NO;
 
-	NSArray *serverVersionParts = [serverVersionString componentsSeparatedByString:@"."];
+	NSArray *serverVersionParts = [ver componentsSeparatedByString:@"."];
 
 	NSUInteger serverMajorVersion = (NSUInteger)[[serverVersionParts objectAtIndex:0] integerValue];
 	if (serverMajorVersion < aMajorVersion) return NO;

Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h

@@ -100,7 +100,7 @@
 	BOOL previousEncodingUsesLatin1Transport;
 
 	// Server details
-	NSString *serverVersionString;
+	NSString *serverVariableVersion;
 
 	// Error state for the last query or connection state
 	NSUInteger queryErrorID;

Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m

@@ -175,7 +175,7 @@ - (id)init
 		[connectionLock setName:@"SPMySQLConnection query lock"];
 
 		// Ensure the server detail records are initialised
-		serverVersionString = nil;
+		serverVariableVersion = nil;
 
 		// Start with a blank error state
 		queryErrorID = 0;
@@ -249,7 +249,7 @@ - (void) dealloc
 
 	if (database) [database release], database = nil;
 	if (databaseToRestore) [databaseToRestore release], databaseToRestore = nil;
-	if (serverVersionString) [serverVersionString release], serverVersionString = nil;
+	if (serverVariableVersion) [serverVariableVersion release], serverVariableVersion = nil;
 	if (queryErrorMessage) [queryErrorMessage release], queryErrorMessage = nil;
 	if (querySqlstate) [querySqlstate release], querySqlstate = nil;
 	[delegateDecisionLock release];
@@ -911,7 +911,7 @@ - (void)_disconnect
 	}
 
 	// Clear host-specific information
-	if (serverVersionString) [serverVersionString release], serverVersionString = nil;
+	if (serverVariableVersion) [serverVariableVersion release], serverVariableVersion = nil;
 	if (database) [database release], database = nil;
 
 	state = SPMySQLDisconnected;
@@ -940,8 +940,8 @@ - (void)_updateConnectionVariables
 	}
 
 	// Copy the server version string to the instance variable
-	if (serverVersionString) [serverVersionString release], serverVersionString = nil;
-	serverVersionString = [[variables objectForKey:@"version"] retain];
+	if (serverVariableVersion) [serverVariableVersion release], serverVariableVersion = nil;
+	serverVariableVersion = [[variables objectForKey:@"version"] retain];
 
 	// Get the connection encoding.  Although a specific encoding may have been requested on
 	// connection, it may be overridden by init_connect commands or connection state changes.

Source/SPServerSupport.m

@@ -95,10 +95,10 @@ @implementation SPServerSupport
 - (id)initWithMajorVersion:(NSInteger)majorVersion minor:(NSInteger)minorVersion release:(NSInteger)releaseVersion
 {
 	if ((self = [super init])) {
-		
-		serverMajorVersion   = majorVersion;
-		serverMinorVersion   = minorVersion;
-		serverReleaseVersion = releaseVersion;
+		// Might be NSNotFound if unknown. unknown should also lose against "0".
+		serverMajorVersion   = (majorVersion   != NSNotFound)? majorVersion   : -1;
+		serverMinorVersion   = (minorVersion   != NSNotFound)? minorVersion   : -1;
+		serverReleaseVersion = (releaseVersion != NSNotFound)? releaseVersion : -1;
 
 		// Determine what the server supports
 		[self evaluate];