Adds the ability to run bash script through appium-for-mac

AppiumForMac/Server/Controller/AfMSessionController.h

@@ -143,6 +143,7 @@ extern NSString * const kCookieDiagnosticsDirectory;
 - (BOOL)isElementDisplayed:(id)element;
 -(BOOL) clickElement:(id)element;
 -(void) closeWindow;
+- (NSString *)executeShellScript:(NSString *)script;
 -(NSDictionary*) pageSource;
 -(NSInteger) pidForProcessName:(NSString*)processName;
 -(SystemEventsProcess*) processForName:(NSString*)processName;

AppiumForMac/Server/Controller/AfMSessionController.m

@@ -574,6 +574,32 @@ -(void) closeWindow
     [self.currentWindow performAction:@"AXCancel"];
 }
 
+- (NSString *)executeShellScript:(NSString *)script
+{
+    NSTask *task = [[NSTask alloc] init];
+    [task setLaunchPath:@"/bin/bash"];
+
+    NSArray *arguments = [NSArray arrayWithObjects:
+                          @"-c" ,
+                          [NSString stringWithFormat:@"%@", script],
+                          nil];
+
+    NSLog(@"running bash script:'%@'", script);
+    [task setArguments:arguments];
+
+    NSPipe *pipe = [NSPipe pipe];
+    [task setStandardOutput:pipe];
+
+    NSFileHandle *file = [pipe fileHandleForReading];
+
+    [task launch];
+
+    NSData *data = [file readDataToEndOfFile];
+
+    NSString *output = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
+    return output;
+}
+
 -(NSString*) currentApplicationName
 {
 	return self._currentApplicationName;

AppiumForMac/Server/Handlers/AfMHandlers.h

@@ -54,7 +54,10 @@
 // POST /session/:sessionId/forward
 // POST /session/:sessionId/back
 // POST /session/:sessionId/refresh
+
 // POST /session/:sessionId/execute
+- (AppiumMacHTTPJSONResponse *)post_execute:(NSString*)path data:(NSData*)postData;
+
 // POST /session/:sessionId/execute_async
 
 // GET /session/:sessionId/screenshot

AppiumForMac/Server/Handlers/AfMHandlers.m

@@ -240,6 +240,17 @@ - (AppiumMacHTTPJSONResponse *)post_url:(NSString*)path data:(NSData*)postData
 // POST /session/:sessionId/execute
 // Inject a snippet of JavaScript into the page for execution in the context of the currently selected frame. The executed script is assumed to be synchronous and the result of evaluating the script is returned to the client.
 
+- (AppiumMacHTTPJSONResponse *)post_execute:(NSString*)path data:(NSData*)postData
+{
+    return [self executeWebDriverCommandWithPath:path data:postData onMainThread:YES commandBlock:^(AfMSessionController *session, NSDictionary *commandParams, int *statusCode)
+    {
+        // The bash script to run
+        NSString *script = (NSString*)[commandParams objectForKey:@"script"];
+        NSString *scriptResult = [session executeShellScript: script];
+        return [AppiumMacHTTPJSONResponse responseWithJson:scriptResult status:kAfMStatusCodeSuccess session:session.sessionId];
+    }];
+}
+
 // POST /session/:sessionId/execute_async
 // Inject a snippet of JavaScript into the page for execution in the context of the currently selected frame. The executed script is assumed to be asynchronous and must signal that is done by invoking the provided callback, which is always provided as the final argument to the function.