CB-3360: Set custom inappbrowser user agent for ios

Author: cjpearson

src/ios/CDVInAppBrowser.m

@@ -52,6 +52,11 @@ - (CDVInAppBrowser*)initWithWebView:(UIWebView*)theWebView
     return self;
 }
 
+- (id)settingForKey:(NSString*)key
+{
+    return [self.commandDelegate.settings objectForKey:[key lowercaseString]];
+}
+
 - (void)onReset
 {
     [self close:nil];
@@ -138,8 +143,16 @@ - (void)openInInAppBrowser:(NSURL*)url withOptions:(NSString*)options
     }
 
     if (self.inAppBrowserViewController == nil) {
-        NSString* originalUA = [CDVUserAgentUtil originalUserAgent];
-        self.inAppBrowserViewController = [[CDVInAppBrowserViewController alloc] initWithUserAgent:originalUA prevUserAgent:[self.commandDelegate userAgent] browserOptions: browserOptions];
+        NSString* userAgent = [CDVUserAgentUtil originalUserAgent];
+        NSString* overrideUserAgent = [self settingForKey:@"OverrideUserAgent"];
+        NSString* appendUserAgent = [self settingForKey:@"AppendUserAgent"];
+        if(overrideUserAgent){
+            userAgent = overrideUserAgent;
+        }
+        if(appendUserAgent){
+            userAgent = [userAgent stringByAppendingString: appendUserAgent];
+        }
+        self.inAppBrowserViewController = [[CDVInAppBrowserViewController alloc] initWithUserAgent:userAgent prevUserAgent:[self.commandDelegate userAgent] browserOptions: browserOptions];
         self.inAppBrowserViewController.navigationDelegate = self;
 
         if ([self.viewController conformsToProtocol:@protocol(CDVScreenOrientationDelegate)]) {