1 /* 2 * Copyright (C) 2010 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 "config.h" 27 #import "WebProcess.h" 28 29 #import "FullKeyboardAccessWatcher.h" 30 #import "SandboxExtension.h" 31 #import "WebPage.h" 32 #import "WebProcessCreationParameters.h" 33 #import <WebCore/FileSystem.h> 34 #import <WebCore/MemoryCache.h> 35 #import <WebCore/PageCache.h> 36 #import <WebKitSystemInterface.h> 37 #import <algorithm> 38 #import <dispatch/dispatch.h> 39 #import <mach/host_info.h> 40 #import <mach/mach.h> 41 #import <mach/mach_error.h> 42 #import <objc/runtime.h> 43 #import <WebCore/LocalizedStrings.h> 44 45 #if ENABLE(WEB_PROCESS_SANDBOX) 46 #import <sandbox.h> 47 #import <stdlib.h> 48 #import <sysexits.h> 49 #endif 50 51 using namespace WebCore; 52 using namespace std; 53 54 namespace WebKit { 55 56 static uint64_t memorySize() 57 { 58 static host_basic_info_data_t hostInfo; 59 60 static dispatch_once_t once; 61 dispatch_once(&once, ^() { 62 mach_port_t host = mach_host_self(); 63 mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT; 64 kern_return_t r = host_info(host, HOST_BASIC_INFO, (host_info_t)&hostInfo, &count); 65 mach_port_deallocate(mach_task_self(), host); 66 67 if (r != KERN_SUCCESS) 68 LOG_ERROR("%s : host_info(%d) : %s.\n", __FUNCTION__, r, mach_error_string(r)); 69 }); 70 71 return hostInfo.max_mem; 72 } 73 74 static uint64_t volumeFreeSize(NSString *path) 75 { 76 NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:path error:NULL]; 77 return [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue]; 78 } 79 80 void WebProcess::platformSetCacheModel(CacheModel cacheModel) 81 { 82 RetainPtr<NSString> nsurlCacheDirectory(AdoptNS, (NSString *)WKCopyFoundationCacheDirectory()); 83 if (!nsurlCacheDirectory) 84 nsurlCacheDirectory = NSHomeDirectory(); 85 86 // As a fudge factor, use 1000 instead of 1024, in case the reported byte 87 // count doesn't align exactly to a megabyte boundary. 88 uint64_t memSize = memorySize() / 1024 / 1000; 89 uint64_t diskFreeSize = volumeFreeSize(nsurlCacheDirectory.get()) / 1024 / 1000; 90 91 unsigned cacheTotalCapacity = 0; 92 unsigned cacheMinDeadCapacity = 0; 93 unsigned cacheMaxDeadCapacity = 0; 94 double deadDecodedDataDeletionInterval = 0; 95 unsigned pageCacheCapacity = 0; 96 unsigned long urlCacheMemoryCapacity = 0; 97 unsigned long urlCacheDiskCapacity = 0; 98 99 calculateCacheSizes(cacheModel, memSize, diskFreeSize, 100 cacheTotalCapacity, cacheMinDeadCapacity, cacheMaxDeadCapacity, deadDecodedDataDeletionInterval, 101 pageCacheCapacity, urlCacheMemoryCapacity, urlCacheDiskCapacity); 102 103 104 memoryCache()->setCapacities(cacheMinDeadCapacity, cacheMaxDeadCapacity, cacheTotalCapacity); 105 memoryCache()->setDeadDecodedDataDeletionInterval(deadDecodedDataDeletionInterval); 106 pageCache()->setCapacity(pageCacheCapacity); 107 108 NSURLCache *nsurlCache = [NSURLCache sharedURLCache]; 109 [nsurlCache setMemoryCapacity:urlCacheMemoryCapacity]; 110 [nsurlCache setDiskCapacity:max<unsigned long>(urlCacheDiskCapacity, [nsurlCache diskCapacity])]; // Don't shrink a big disk cache, since that would cause churn. 111 } 112 113 void WebProcess::platformClearResourceCaches(ResourceCachesToClear cachesToClear) 114 { 115 if (cachesToClear == InMemoryResourceCachesOnly) 116 return; 117 [[NSURLCache sharedURLCache] removeAllCachedResponses]; 118 } 119 120 bool WebProcess::fullKeyboardAccessEnabled() 121 { 122 return [FullKeyboardAccessWatcher fullKeyboardAccessEnabled]; 123 } 124 125 #if ENABLE(WEB_PROCESS_SANDBOX) 126 static void appendSandboxParameterPathInternal(Vector<const char*>& vector, const char* name, const char* path) 127 { 128 char normalizedPath[PATH_MAX]; 129 if (!realpath(path, normalizedPath)) 130 normalizedPath[0] = '\0'; 131 132 vector.append(name); 133 vector.append(fastStrDup(normalizedPath)); 134 } 135 136 static void appendReadwriteConfDirectory(Vector<const char*>& vector, const char* name, int confID) 137 { 138 char path[PATH_MAX]; 139 if (confstr(confID, path, PATH_MAX) <= 0) 140 path[0] = '\0'; 141 142 appendSandboxParameterPathInternal(vector, name, path); 143 } 144 145 static void appendReadonlySandboxDirectory(Vector<const char*>& vector, const char* name, NSString *path) 146 { 147 appendSandboxParameterPathInternal(vector, name, [(NSString *)path fileSystemRepresentation]); 148 } 149 150 static void appendReadwriteSandboxDirectory(Vector<const char*>& vector, const char* name, NSString *path) 151 { 152 NSError *error = nil; 153 154 // This is very unlikely to fail, but in case it actually happens, we'd like some sort of output in the console. 155 if (![[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:&error]) 156 NSLog(@"could not create \"%@\", error %@", path, error); 157 158 appendSandboxParameterPathInternal(vector, name, [(NSString *)path fileSystemRepresentation]); 159 } 160 161 #endif 162 163 static void initializeSandbox(const WebProcessCreationParameters& parameters) 164 { 165 #if ENABLE(WEB_PROCESS_SANDBOX) 166 if ([[NSUserDefaults standardUserDefaults] boolForKey:@"DisableSandbox"]) { 167 fprintf(stderr, "Bypassing sandbox due to DisableSandbox user default.\n"); 168 return; 169 } 170 171 Vector<const char*> sandboxParameters; 172 173 // These are read-only. 174 appendReadonlySandboxDirectory(sandboxParameters, "WEBKIT2_FRAMEWORK_DIR", [[[NSBundle bundleForClass:NSClassFromString(@"WKView")] bundlePath] stringByDeletingLastPathComponent]); 175 appendReadonlySandboxDirectory(sandboxParameters, "UI_PROCESS_BUNDLE_RESOURCE_DIR", parameters.uiProcessBundleResourcePath); 176 177 // These are read-write getconf paths. 178 appendReadwriteConfDirectory(sandboxParameters, "DARWIN_USER_TEMP_DIR", _CS_DARWIN_USER_TEMP_DIR); 179 appendReadwriteConfDirectory(sandboxParameters, "DARWIN_USER_CACHE_DIR", _CS_DARWIN_USER_CACHE_DIR); 180 181 // These are read-write paths. 182 appendReadwriteSandboxDirectory(sandboxParameters, "HOME_DIR", NSHomeDirectory()); 183 appendReadwriteSandboxDirectory(sandboxParameters, "WEBKIT_DATABASE_DIR", parameters.databaseDirectory); 184 appendReadwriteSandboxDirectory(sandboxParameters, "WEBKIT_LOCALSTORAGE_DIR", parameters.localStorageDirectory); 185 appendReadwriteSandboxDirectory(sandboxParameters, "NSURL_CACHE_DIR", parameters.nsURLCachePath); 186 187 sandboxParameters.append(static_cast<const char*>(0)); 188 189 const char* profilePath = [[[NSBundle mainBundle] pathForResource:@"com.apple.WebProcess" ofType:@"sb"] fileSystemRepresentation]; 190 191 char* errorBuf; 192 if (sandbox_init_with_parameters(profilePath, SANDBOX_NAMED_EXTERNAL, sandboxParameters.data(), &errorBuf)) { 193 fprintf(stderr, "WebProcess: couldn't initialize sandbox profile [%s]\n", profilePath); 194 for (size_t i = 0; sandboxParameters[i]; i += 2) 195 fprintf(stderr, "%s=%s\n", sandboxParameters[i], sandboxParameters[i + 1]); 196 exit(EX_NOPERM); 197 } 198 199 for (size_t i = 0; sandboxParameters[i]; i += 2) 200 fastFree(const_cast<char*>(sandboxParameters[i + 1])); 201 #endif 202 } 203 204 static id NSApplicationAccessibilityFocusedUIElement(NSApplication*, SEL) 205 { 206 WebPage* page = WebProcess::shared().focusedWebPage(); 207 if (!page || !page->accessibilityRemoteObject()) 208 return 0; 209 210 return [page->accessibilityRemoteObject() accessibilityFocusedUIElement]; 211 } 212 213 void WebProcess::platformInitializeWebProcess(const WebProcessCreationParameters& parameters, CoreIPC::ArgumentDecoder*) 214 { 215 [[NSFileManager defaultManager] changeCurrentDirectoryPath:[[NSBundle mainBundle] bundlePath]]; 216 217 initializeSandbox(parameters); 218 219 if (!parameters.parentProcessName.isNull()) { 220 NSString *applicationName = [NSString stringWithFormat:WEB_UI_STRING("%@ Web Content", "Visible name of the web process. The argument is the application name."), (NSString *)parameters.parentProcessName]; 221 WKSetVisibleApplicationName((CFStringRef)applicationName); 222 } 223 224 if (!parameters.nsURLCachePath.isNull()) { 225 NSUInteger cacheMemoryCapacity = parameters.nsURLCacheMemoryCapacity; 226 NSUInteger cacheDiskCapacity = parameters.nsURLCacheDiskCapacity; 227 228 RetainPtr<NSURLCache> parentProcessURLCache(AdoptNS, [[NSURLCache alloc] initWithMemoryCapacity:cacheMemoryCapacity diskCapacity:cacheDiskCapacity diskPath:parameters.nsURLCachePath]); 229 [NSURLCache setSharedURLCache:parentProcessURLCache.get()]; 230 } 231 232 m_compositingRenderServerPort = parameters.acceleratedCompositingPort.port(); 233 234 // rdar://9118639 accessibilityFocusedUIElement in NSApplication defaults to use the keyWindow. Since there's 235 // no window in WK2, NSApplication needs to use the focused page's focused element. 236 Method methodToPatch = class_getInstanceMethod([NSApplication class], @selector(accessibilityFocusedUIElement)); 237 method_setImplementation(methodToPatch, (IMP)NSApplicationAccessibilityFocusedUIElement); 238 } 239 240 void WebProcess::platformTerminate() 241 { 242 } 243 244 } // namespace WebKit 245