#2437 disable keychain access when passwords are being sent as cleartext

Author: abhibeckert

Source/SPKeychain.m

@@ -38,6 +38,23 @@
 
 @implementation SPKeychain
 
+- (id)init
+{
+	if (!(self = [super init])) {
+		return nil;
+	}
+	
+	NSString *cleartext = [NSProcessInfo processInfo].environment[@"LIBMYSQL_ENABLE_CLEARTEXT_PLUGIN"];
+	if (cleartext != nil) {
+		NSLog(@"LIBMYSQL_ENABLE_CLEARTEXT_PLUGIN is set. Disabling keychain access. See Issue #2437");
+		
+		[self release];
+		return nil;
+	}
+	
+	return self;
+}
+
 /**
  * Add the supplied password to the user's Keychain using the supplied name and account.
  */