WebKitTools/WebKitLauncher/WebKitNightlyEnabler.m

   1 /*
   2  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc.  All rights reserved.
   3  * Copyright (C) 2006 Graham Dennis.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1.  Redistributions of source code must retain the above copyright
  10  *     notice, this list of conditions and the following disclaimer.
  11  * 2.  Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
  15  *     its contributors may be used to endorse or promote products derived
  16  *     from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #import <Cocoa/Cocoa.h>
  31 #import "WebKitNightlyEnablerSparkle.h"
  32
  33 static void enableWebKitNightlyBehaviour() __attribute__ ((constructor));
  34
  35 static NSString *WKNERunState = @"WKNERunState";
  36 static NSString *WKNEShouldMonitorShutdowns = @"WKNEShouldMonitorShutdowns";
  37
  38 typedef enum {
  39     RunStateShutDown,
  40     RunStateInitializing,
  41     RunStateRunning
  42 } WKNERunStates;
  43
  44 static char *webKitAppPath;
  45 static bool extensionBundlesWereLoaded = NO;
  46 static NSSet *extensionPaths = nil;
  47
  48 static int32_t systemVersion()
  49 {
  50     static SInt32 version = 0;
  51     if (!version)
  52         Gestalt(gestaltSystemVersion, &version);
  53
  54     return version;
  55 }
  56
  57
  58 static void myBundleDidLoad(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo)
  59 {
  60     NSBundle *bundle = (NSBundle *)object;
  61     NSString *bundlePath = [[bundle bundlePath] stringByAbbreviatingWithTildeInPath];
  62     NSString *bundleFileName = [bundlePath lastPathComponent];
  63
  64     // Explicitly ignore SIMBL.bundle, as its only purpose is to load extensions
  65     // on a per-application basis.  It's presence indicates a user has application
  66     // extensions, but not that any will be loaded into Safari
  67     if ([bundleFileName isEqualToString:@"SIMBL.bundle"])
  68         return;
  69
  70     // If the bundle lives inside a known extension path, flag it as an extension
  71     NSEnumerator *e = [extensionPaths objectEnumerator];
  72     NSString *path = nil;
  73     while ((path = [e nextObject])) {
  74         if ([bundlePath length] < [path length])
  75             continue;
  76
  77         if ([[bundlePath substringToIndex:[path length]] isEqualToString:path]) {
  78             NSLog(@"Extension detected: %@", bundlePath);
  79             extensionBundlesWereLoaded = YES;
  80             break;
  81         }
  82     }
  83 }
  84
  85 static void myApplicationWillFinishLaunching(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo)
  86 {
  87     CFNotificationCenterRemoveObserver(CFNotificationCenterGetLocalCenter(), &myApplicationWillFinishLaunching, NULL, NULL);
  88     CFNotificationCenterRemoveObserver(CFNotificationCenterGetLocalCenter(), &myBundleDidLoad, NULL, NULL);
  89     [extensionPaths release];
  90     extensionPaths = nil;
  91
  92     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
  93     [userDefaults setInteger:RunStateRunning forKey:WKNERunState];
  94     [userDefaults synchronize];
  95
  96     if (extensionBundlesWereLoaded)
  97         NSRunInformationalAlertPanel(@"Safari extensions detected",
  98                                      @"Safari extensions were detected on your system.  Extensions are incompatible with nightly builds of WebKit, and may cause crashes or incorrect behavior.  Please disable them if you experience such behavior.", @"Continue",
  99                                      nil, nil);
 100
 101     initializeSparkle();
 102 }
 103
 104 static void myApplicationWillTerminate(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo)
 105 {
 106     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
 107     [userDefaults setInteger:RunStateShutDown forKey:WKNERunState];
 108     [userDefaults synchronize];
 109 }
 110
 111 NSBundle *webKitLauncherBundle()
 112 {
 113     NSString *executablePath = [NSString stringWithUTF8String:webKitAppPath];
 114     NSRange appLocation = [executablePath rangeOfString:@".app/" options:NSBackwardsSearch];
 115     NSString *appPath = [executablePath substringToIndex:appLocation.location + appLocation.length];
 116     return [NSBundle bundleWithPath:appPath];
 117 }
 118
 119 extern char **_CFGetProcessPath() __attribute__((weak));
 120 extern OSStatus _RegisterApplication(CFDictionaryRef additionalAppInfoRef, ProcessSerialNumber* myPSN) __attribute__((weak));
 121
 122 static void poseAsWebKitApp()
 123 {
 124     webKitAppPath = strdup(getenv("WebKitAppPath"));
 125     if (!webKitAppPath)
 126         return;
 127
 128     unsetenv("WebKitAppPath");
 129
 130     // Set up the main bundle early so it points at Safari.app
 131     CFBundleGetMainBundle();
 132
 133     if (systemVersion() < 0x1060) {
 134         if (!_CFGetProcessPath)
 135             return;
 136
 137         // Fiddle with CoreFoundation to have it pick up the executable path as being within WebKit.app
 138         char **processPath = _CFGetProcessPath();
 139         *processPath = NULL;
 140         setenv("CFProcessPath", webKitAppPath, 1);
 141         _CFGetProcessPath();
 142         unsetenv("CFProcessPath");
 143     } else {
 144         if (!_RegisterApplication)
 145             return;
 146
 147         // Register the application with LaunchServices, passing a customized registration dictionary that
 148         // uses the WebKit launcher as the application bundle.
 149         NSBundle *bundle = webKitLauncherBundle();
 150         NSMutableDictionary *checkInDictionary = [[bundle infoDictionary] mutableCopy];
 151         [checkInDictionary setObject:[bundle bundlePath] forKey:@"LSBundlePath"];
 152         [checkInDictionary setObject:[checkInDictionary objectForKey:(NSString *)kCFBundleNameKey] forKey:@"LSDisplayName"];
 153         _RegisterApplication((CFDictionaryRef)checkInDictionary, 0);
 154         [checkInDictionary release];
 155     }
 156 }
 157
 158 static BOOL insideSafari4OnTigerTrampoline()
 159 {
 160     // If we're not on Tiger then we can't be in the trampoline state.
 161     if ((systemVersion() & 0xFFF0) != 0x1040)
 162         return NO;
 163
 164     // If we're running Safari < 4.0 then we can't be in the trampoline state.
 165     CFBundleRef safariBundle = CFBundleGetMainBundle();
 166     CFStringRef safariVersion = CFBundleGetValueForInfoDictionaryKey(safariBundle, CFSTR("CFBundleShortVersionString"));
 167     if ([(NSString *)safariVersion intValue] < 4)
 168         return NO;
 169
 170     const char* frameworkPath = getenv("DYLD_FRAMEWORK_PATH");
 171     if (!frameworkPath)
 172         frameworkPath = "";
 173
 174     // If the framework search path is empty or otherwise does not contain the Safari
 175     // framework's Frameworks directory then we are in the trampoline state.
 176     const char safariFrameworkSearchPath[] = "/System/Library/PrivateFrameworks/Safari.framework/Frameworks";
 177     return strstr(frameworkPath, safariFrameworkSearchPath) == 0;
 178 }
 179
 180 static void enableWebKitNightlyBehaviour()
 181 {
 182     // If we're inside Safari in its trampoline state, it will very shortly relaunch itself.
 183     // We bail out here so that we'll be called again in the freshly-launched Safari process.
 184     if (insideSafari4OnTigerTrampoline())
 185         return;
 186
 187     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
 188
 189     unsetenv("DYLD_INSERT_LIBRARIES");
 190     poseAsWebKitApp();
 191
 192     extensionPaths = [[NSSet alloc] initWithObjects:@"~/Library/InputManagers/", @"/Library/InputManagers/",
 193                                                     @"~/Library/Application Support/SIMBL/Plugins/", @"/Library/Application Support/SIMBL/Plugins/",
 194                                                     @"~/Library/Application Enhancers/", @"/Library/Application Enhancers/",
 195                                                     nil];
 196
 197     // As of 2008-11 attempting to load Saft would cause a crash on launch, so prevent it from being loaded.
 198     NSArray *disabledInputManagers = [NSArray arrayWithObjects:@"Saft", nil];
 199
 200     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
 201     NSDictionary *defaultPrefs = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:RunStateShutDown], WKNERunState,
 202                                                                             [NSNumber numberWithBool:YES], WKNEShouldMonitorShutdowns,
 203                                                                             disabledInputManagers, @"NSDisabledInputManagers", nil];
 204     [userDefaults registerDefaults:defaultPrefs];
 205     if ([userDefaults boolForKey:WKNEShouldMonitorShutdowns]) {
 206         WKNERunStates savedState = (WKNERunStates)[userDefaults integerForKey:WKNERunState];
 207         if (savedState == RunStateInitializing) {
 208             // Use CoreFoundation here as AppKit hasn't been initialized at this stage of Safari's lifetime
 209             CFOptionFlags responseFlags;
 210             CFUserNotificationDisplayAlert(0, kCFUserNotificationCautionAlertLevel,
 211                                            NULL, NULL, NULL,
 212                                            CFSTR("WebKit failed to open correctly"),
 213                                            CFSTR("WebKit failed to open correctly on your previous attempt. Please disable any Safari extensions that you may have installed.  If the problem continues to occur, please file a bug report at http://webkit.org/quality/reporting.html"),
 214                                            CFSTR("Continue"), NULL, NULL, &responseFlags);
 215         }
 216         else if (savedState == RunStateRunning) {
 217             NSLog(@"WebKit failed to shut down cleanly.  Checking for Safari extensions.");
 218             CFNotificationCenterAddObserver(CFNotificationCenterGetLocalCenter(), &myBundleDidLoad,
 219                                             myBundleDidLoad, (CFStringRef) NSBundleDidLoadNotification,
 220                                             NULL, CFNotificationSuspensionBehaviorDeliverImmediately);
 221         }
 222     }
 223     [userDefaults setInteger:RunStateInitializing forKey:WKNERunState];
 224     [userDefaults synchronize];
 225
 226     CFNotificationCenterAddObserver(CFNotificationCenterGetLocalCenter(), &myApplicationWillFinishLaunching,
 227                                     myApplicationWillFinishLaunching, (CFStringRef) NSApplicationWillFinishLaunchingNotification,
 228                                     NULL, CFNotificationSuspensionBehaviorDeliverImmediately);
 229     CFNotificationCenterAddObserver(CFNotificationCenterGetLocalCenter(), &myApplicationWillTerminate,
 230                                     myApplicationWillTerminate, (CFStringRef) NSApplicationWillTerminateNotification,
 231                                     NULL, CFNotificationSuspensionBehaviorDeliverImmediately);
 232
 233     NSLog(@"WebKit %@ initialized.", [webKitLauncherBundle() objectForInfoDictionaryKey:@"CFBundleShortVersionString"]);
 234
 235     [pool release];
 236 }