Source/WebKit2/Shared/EntryPointUtilities/mac/XPCService/XPCServiceMain.mm

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #import <CoreFoundation/CoreFoundation.h>
  27 #import <wtf/OSObjectPtr.h>
  28
  29 namespace WebKit {
  30
  31 static void XPCServiceEventHandler(xpc_connection_t peer)
  32 {
  33     xpc_connection_set_target_queue(peer, dispatch_get_main_queue());
  34     xpc_connection_set_event_handler(peer, ^(xpc_object_t event) {
  35         xpc_type_t type = xpc_get_type(event);
  36         if (type == XPC_TYPE_ERROR) {
  37             if (event == XPC_ERROR_CONNECTION_INVALID || event == XPC_ERROR_TERMINATION_IMMINENT) {
  38                 // FIXME: Handle this case more gracefully.
  39                 exit(EXIT_FAILURE);
  40             }
  41         } else {
  42             assert(type == XPC_TYPE_DICTIONARY);
  43
  44             if (!strcmp(xpc_dictionary_get_string(event, "message-name"), "bootstrap")) {
  45                 CFBundleRef webKitBundle = CFBundleGetBundleWithIdentifier(CFSTR("com.apple.WebKit"));
  46                 CFStringRef entryPointFunctionName = (CFStringRef)CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(), CFSTR("WebKitEntryPoint"));
  47
  48                 typedef void (*InitializerFunction)(xpc_connection_t, xpc_object_t);
  49                 InitializerFunction initializerFunctionPtr = reinterpret_cast<InitializerFunction>(CFBundleGetFunctionPointerForName(webKitBundle, entryPointFunctionName));
  50                 if (!initializerFunctionPtr) {
  51                     NSLog(@"Unable to find entry point in WebKit.framework with name: %@", (NSString *)entryPointFunctionName);
  52                     exit(EXIT_FAILURE);
  53                 }
  54
  55                 auto reply = adoptOSObject(xpc_dictionary_create_reply(event));
  56                 xpc_dictionary_set_string(reply.get(), "message-name", "process-finished-launching");
  57                 xpc_connection_send_message(xpc_dictionary_get_remote_connection(event), reply.get());
  58
  59                 initializerFunctionPtr(peer, event);
  60             }
  61
  62             // Leak a boost onto the NetworkProcess.
  63             if (!strcmp(xpc_dictionary_get_string(event, "message-name"), "pre-bootstrap"))
  64                 xpc_retain(event);
  65         }
  66     });
  67
  68     xpc_connection_resume(peer);
  69 }
  70
  71 } // namespace WebKit
  72
  73 using namespace WebKit;
  74
  75 int main(int argc, char** argv)
  76 {
  77     xpc_main(XPCServiceEventHandler);
  78     return 0;
  79 }