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1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#import "chrome/service/chrome_service_application_mac.h"
6
7#include "base/mac/foundation_util.h"
8#include "base/mac/mac_logging.h"
9#include "base/strings/sys_string_conversions.h"
10#import "chrome/common/cloud_print/cloud_print_class_mac.h"
11#include "chrome/common/chrome_switches.h"
12
13@interface ServiceEventHandler : NSObject
14+ (void)submitPrint:(NSAppleEventDescriptor*)event;
15@end
16
17@implementation ServiceEventHandler
18
19// Event handler for Cloud Print Event. Forwards print job received to Chrome,
20// launching Chrome if necessary. Used to beat CUPS sandboxing.
21+ (void)submitPrint:(NSAppleEventDescriptor*)event {
22  std::string silent = std::string("--") + switches::kNoStartupWindow;
23  // Set up flag so that it can be passed along with the Apple Event.
24  base::ScopedCFTypeRef<CFStringRef> silentLaunchFlag(
25      base::SysUTF8ToCFStringRef(silent));
26  CFStringRef flags[] = { silentLaunchFlag };
27  // Argv array that will be passed.
28  base::ScopedCFTypeRef<CFArrayRef> passArgv(
29      CFArrayCreate(NULL, (const void**)flags, 1, &kCFTypeArrayCallBacks));
30  FSRef ref;
31  // Get Chrome's bundle ID.
32  std::string bundleID = base::mac::BaseBundleID();
33  base::ScopedCFTypeRef<CFStringRef> bundleIDCF(
34      base::SysUTF8ToCFStringRef(bundleID));
35  // Use Launch Services to locate Chrome using its bundleID.
36  OSStatus status = LSFindApplicationForInfo(kLSUnknownCreator, bundleIDCF,
37                                             NULL, &ref, NULL);
38
39  if (status != noErr) {
40    OSSTATUS_LOG(ERROR, status) << "Failed to make path ref";
41    return;
42  }
43  // Actually create the Apple Event.
44  NSAppleEventDescriptor* sendEvent =
45      [NSAppleEventDescriptor
46           appleEventWithEventClass:cloud_print::kAECloudPrintClass
47                            eventID:cloud_print::kAECloudPrintClass
48                   targetDescriptor:nil
49                           returnID:kAutoGenerateReturnID
50                      transactionID:kAnyTransactionID];
51  // Pull the parameters out of AppleEvent sent to us and attach them
52  // to our Apple Event.
53  NSAppleEventDescriptor* parameters =
54      [event paramDescriptorForKeyword:cloud_print::kAECloudPrintClass];
55  [sendEvent setParamDescriptor:parameters
56                     forKeyword:cloud_print::kAECloudPrintClass];
57  LSApplicationParameters params = { 0,
58                                     kLSLaunchDefaults,
59                                     &ref,
60                                     NULL,
61                                     NULL,
62                                     passArgv,
63                                     NULL };
64  AEDesc* initialEvent = const_cast<AEDesc*>([sendEvent aeDesc]);
65  params.initialEvent = static_cast<AppleEvent*>(initialEvent);
66  // Send the Apple Event Using launch services, launching Chrome if necessary.
67  status = LSOpenApplication(&params, NULL);
68  if (status != noErr) {
69    OSSTATUS_LOG(ERROR, status) << "Unable to launch";
70  }
71}
72
73@end
74
75namespace chrome_service_mac {
76
77void RegisterServiceEventHandler() {
78  NSAppleEventManager* em = [NSAppleEventManager sharedAppleEventManager];
79  [em setEventHandler:[ServiceEventHandler class]
80          andSelector:@selector(submitPrint:)
81        forEventClass:cloud_print::kAECloudPrintClass
82           andEventID:cloud_print::kAECloudPrintClass];
83}
84
85}  // namespace chrome_service_mac
86