Virtual Cloud Print Driver for Mac.

content/common/chrome_application_mac.mm

Index: content/common/chrome_application_mac.mm
diff --git a/content/common/chrome_application_mac.mm b/content/common/chrome_application_mac.mm
index f21852fb78ffeacd5bcd123492d7568bb047ce99..400e6ac48ecb964c6ba9c4e4dd9b9c046611e578 100644
--- a/content/common/chrome_application_mac.mm
+++ b/content/common/chrome_application_mac.mm
@@ -3,11 +3,15 @@
 // found in the LICENSE file.
 
 #import "content/common/chrome_application_mac.h"
+#import "content/common/cloud_print_class_mac.h"
 
 #include "base/logging.h"
+#include "base/mac/foundation_util.h"
 
 @interface CrApplication ()
 - (void)setHandlingSendEvent:(BOOL)handlingSendEvent;
+- (void)setCloudPrintHandlerInternal;
+- (void)submitPrint:(NSAppleEventDescriptor*)event;
 @end
 
 @implementation CrApplication
@@ -31,6 +35,75 @@
   return self;
 }
 
+// Sets the Cloud Print Handler. Used only by service process.
+- (void)setCloudPrintHandlerInternal {
+  NSAppleEventManager* em = [NSAppleEventManager sharedAppleEventManager];
+  [em setEventHandler:self
+          andSelector:@selector(submitPrint:)
+        forEventClass:cloudPrintClass
+           andEventID:cloudPrintClass];
+}
+
+// Event handler for Cloud Print Event. Forwards print job recieved to Chrome,
+// launching Chrome if necessary. Used to beat CUPS sandboxing.
+- (void)submitPrint:(NSAppleEventDescriptor*)event {
+  // TODO: Resolve dependency on flag.
+  const char silent[] = "--no-startup-window";
+  // Set up flag so that it can be passed along with Apple Event.
+  CFStringRef silentLaunchFlag =
+      CFStringCreateWithCString(NULL,silent,kCFStringEncodingUTF8);
+  CFStringRef flags[] = { silentLaunchFlag };
+  // Argv array that will be passed.
+  CFArrayRef passArgv =
+      CFArrayCreate(NULL, (const void**) flags, 1, &kCFTypeArrayCallBacks);
+  FSRef ref;
+  OSStatus status = noErr;
+  CFURLRef* kDontWantURL = NULL;
+  // Get Chrome's bundle ID.
+  std::string bundleID =  base::mac::BaseBundleID();
+  CFStringRef bundleIDCF =
+      CFStringCreateWithCString(NULL, bundleID.c_str(), kCFStringEncodingUTF8);
+  // Use Launch Services to locate Chrome using its bundleID.
+  status = LSFindApplicationForInfo(kLSUnknownCreator, bundleIDCF,
+                                    NULL, &ref, kDontWantURL);
+
+  if (status != noErr) {
+    LOG(ERROR) << "Failed to make path ref";
+    LOG(ERROR) << GetMacOSStatusErrorString(status);
+    LOG(ERROR) << GetMacOSStatusCommentString(status);
+  }
+  // Actually create the Apple Event.
+  NSAppleEventDescriptor* sendEvent = [NSAppleEventDescriptor
+                                        appleEventWithEventClass:
+                                            cloudPrintClass
+                                        eventID:cloudPrintClass
+                                        targetDescriptor:nil
+                                        returnID:kAutoGenerateReturnID
+                                        transactionID:kAnyTransactionID];
+  // Pull the parameters out of AppleEvent sent to us and attach them
+  // to our Apple Event.
+  NSAppleEventDescriptor* parameters =
+    [event paramDescriptorForKeyword:cloudPrintClass];
+  [sendEvent setParamDescriptor:parameters forKeyword:cloudPrintClass];
+  LSApplicationParameters params = { 0,
+                                     kLSLaunchDefaults,
+                                     &ref,
+                                     NULL,
+                                     NULL,
+                                     passArgv,
+                                     NULL };
+  params.initialEvent = (AppleEvent *)  [sendEvent aeDesc];
+  // Send the Apple Event Using launch services, launching Chrome if necessary.
+  status = LSOpenApplication(&params, NULL);
+
+  if (status != noErr) {
+    LOG(ERROR) << "Unable to launch";
+    LOG(ERROR) << GetMacOSStatusErrorString(status);
+    LOG(ERROR) << GetMacOSStatusCommentString(status);
+  }
+}
+
+
 - (BOOL)isHandlingSendEvent {
   return handlingSendEvent_;
 }
@@ -62,6 +135,7 @@
 @end
 
 namespace chrome_application_mac {
+  CrApplication* var;
 
 ScopedSendingEvent::ScopedSendingEvent()
     : app_(static_cast<CrApplication*>([CrApplication sharedApplication])),
@@ -74,7 +148,13 @@ ScopedSendingEvent::~ScopedSendingEvent() {
 }
 
 void RegisterCrApp() {
-  [CrApplication sharedApplication];
+  var = (CrApplication*) [CrApplication sharedApplication];
+}
+
+void SetCloudPrintHandler() {
+  [var setCloudPrintHandlerInternal];
 }
 
+
 }  // namespace chrome_application_mac
+