From 0291a3a646911ad30480ab925034ab7f765a8acf Mon Sep 17 00:00:00 2001
From: "Jay Freeman (saurik)" <saurik@saurik.com>
Date: Mon, 21 Mar 2011 04:15:24 -0700
Subject: Fix underlying Apple UIWebViewWebViewDelegate on 2.x retain/release
 bug.

---
 CyteKit/WebView.mm | 14 ++++++++++++++
 iPhonePrivate.h    |  3 +++
 2 files changed, 17 insertions(+)

diff --git a/CyteKit/WebView.mm b/CyteKit/WebView.mm
index 1329d4f..0e8ba71 100644
--- a/CyteKit/WebView.mm
+++ b/CyteKit/WebView.mm
@@ -118,6 +118,15 @@
 }
 
 - (void) dealloc {
+    if (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber_iPhoneOS_3_0) {
+        UIWebViewInternal *&_internal(MSHookIvar<UIWebViewInternal *>(self, "_internal"));
+        if (&_internal != NULL) {
+            UIWebViewWebViewDelegate *&webViewDelegate(MSHookIvar<UIWebViewWebViewDelegate *>(_internal, "webViewDelegate"));
+            if (&webViewDelegate != NULL)
+                [webViewDelegate _clearUIWebView];
+        }
+    }
+
     [super dealloc];
 }
 
@@ -353,6 +362,10 @@ static void $UIWebViewWebViewDelegate$webViewClose$(UIWebViewWebViewDelegate *se
 
 @end
 
+static void $UIWebViewWebViewDelegate$_clearUIWebView(UIWebViewWebViewDelegate *self, SEL sel) {
+    MSHookIvar<UIWebView *>(self, "uiWebView") = nil;
+}
+
 __attribute__((__constructor__)) static void $() {
     if (Class $UIWebViewWebViewDelegate = objc_getClass("UIWebViewWebViewDelegate")) {
         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:addMessageToConsole:), (IMP) &$UIWebViewWebViewDelegate$webView$addMessageToConsole$, "v16@0:4@8@12");
@@ -362,5 +375,6 @@ __attribute__((__constructor__)) static void $() {
         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:didReceiveTitle:forFrame:), (IMP) &$UIWebViewWebViewDelegate$webView$didReceiveTitle$forFrame$, "v20@0:4@8@12@16");
         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:), (IMP) &$UIWebViewWebViewDelegate$webView$resource$willSendRequest$redirectResponse$fromDataSource$, "@28@0:4@8@12@16@20@24");
         class_addMethod($UIWebViewWebViewDelegate, @selector(webViewClose:), (IMP) &$UIWebViewWebViewDelegate$webViewClose$, "v12@0:4@8");
+        class_addMethod($UIWebViewWebViewDelegate, @selector(_clearUIWebView), (IMP) &$UIWebViewWebViewDelegate$_clearUIWebView, "v8@0:4");
     }
 }
diff --git a/iPhonePrivate.h b/iPhonePrivate.h
index 8cc997a..cddfe9c 100644
--- a/iPhonePrivate.h
+++ b/iPhonePrivate.h
@@ -124,6 +124,9 @@ typedef enum {
 @interface UIWebViewWebViewDelegate : NSObject {
     @public UIWebView *uiWebView;
 }
+
+- (void) _clearUIWebView;
+
 @end
 // }}}
 // @interface *Button : * {{{
-- 
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