зеркало из https://github.com/mozilla/gecko-dev.git
592 строки
20 KiB
C++
592 строки
20 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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nsPluginsDirDarwin.cpp
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Mac OS X implementation of the nsPluginsDir/nsPluginsFile classes.
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by Patrick C. Beard.
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*/
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#include "GeckoChildProcessHost.h"
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#include "base/process_util.h"
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#include "prlink.h"
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#include "prnetdb.h"
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#include "nsXPCOM.h"
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#include "nsPluginsDir.h"
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#include "nsNPAPIPlugin.h"
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#include "nsPluginsDirUtils.h"
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#include "nsILocalFileMac.h"
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#include "nsCocoaFeatures.h"
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#if defined(MOZ_CRASHREPORTER)
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#include "nsExceptionHandler.h"
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#endif
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <Carbon/Carbon.h>
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#include <CoreServices/CoreServices.h>
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#include <mach-o/loader.h>
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#include <mach-o/fat.h>
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typedef NS_NPAPIPLUGIN_CALLBACK(const char *, NP_GETMIMEDESCRIPTION) ();
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typedef NS_NPAPIPLUGIN_CALLBACK(OSErr, BP_GETSUPPORTEDMIMETYPES) (BPSupportedMIMETypes *mimeInfo, UInt32 flags);
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/*
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** Returns a CFBundleRef if the path refers to a Mac OS X bundle directory.
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** The caller is responsible for calling CFRelease() to deallocate.
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*/
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static CFBundleRef getPluginBundle(const char* path)
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{
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CFBundleRef bundle = nullptr;
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CFStringRef pathRef = ::CFStringCreateWithCString(nullptr, path,
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kCFStringEncodingUTF8);
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if (pathRef) {
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CFURLRef bundleURL = ::CFURLCreateWithFileSystemPath(nullptr, pathRef,
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kCFURLPOSIXPathStyle,
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true);
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if (bundleURL) {
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bundle = ::CFBundleCreate(nullptr, bundleURL);
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::CFRelease(bundleURL);
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}
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::CFRelease(pathRef);
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}
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return bundle;
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}
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static nsresult toCFURLRef(nsIFile* file, CFURLRef& outURL)
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{
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nsCOMPtr<nsILocalFileMac> lfm = do_QueryInterface(file);
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if (!lfm)
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return NS_ERROR_FAILURE;
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CFURLRef url;
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nsresult rv = lfm->GetCFURL(&url);
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if (NS_SUCCEEDED(rv))
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outURL = url;
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return rv;
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}
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bool nsPluginsDir::IsPluginFile(nsIFile* file)
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{
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nsCString fileName;
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file->GetNativeLeafName(fileName);
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/*
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* Don't load the VDP fake plugin, to avoid tripping a bad bug in OS X
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* 10.5.3 (see bug 436575).
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*/
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if (!strcmp(fileName.get(), "VerifiedDownloadPlugin.plugin")) {
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NS_WARNING("Preventing load of VerifiedDownloadPlugin.plugin (see bug 436575)");
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return false;
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}
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return true;
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}
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// Caller is responsible for freeing returned buffer.
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static char* CFStringRefToUTF8Buffer(CFStringRef cfString)
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{
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const char* buffer = ::CFStringGetCStringPtr(cfString, kCFStringEncodingUTF8);
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if (buffer) {
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return PL_strdup(buffer);
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}
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int bufferLength =
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::CFStringGetMaximumSizeForEncoding(::CFStringGetLength(cfString),
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kCFStringEncodingUTF8) + 1;
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char* newBuffer = static_cast<char*>(moz_xmalloc(bufferLength));
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if (!newBuffer) {
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return nullptr;
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}
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if (!::CFStringGetCString(cfString, newBuffer, bufferLength,
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kCFStringEncodingUTF8)) {
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free(newBuffer);
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return nullptr;
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}
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newBuffer = static_cast<char*>(moz_xrealloc(newBuffer,
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strlen(newBuffer) + 1));
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return newBuffer;
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}
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class AutoCFTypeObject {
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public:
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explicit AutoCFTypeObject(CFTypeRef aObject)
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{
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mObject = aObject;
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}
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~AutoCFTypeObject()
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{
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::CFRelease(mObject);
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}
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private:
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CFTypeRef mObject;
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};
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static Boolean MimeTypeEnabled(CFDictionaryRef mimeDict) {
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if (!mimeDict) {
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return true;
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}
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CFTypeRef value;
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if (::CFDictionaryGetValueIfPresent(mimeDict, CFSTR("WebPluginTypeEnabled"), &value)) {
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if (value && ::CFGetTypeID(value) == ::CFBooleanGetTypeID()) {
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return ::CFBooleanGetValue(static_cast<CFBooleanRef>(value));
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}
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}
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return true;
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}
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static CFDictionaryRef ParsePlistForMIMETypesFilename(CFBundleRef bundle)
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{
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CFTypeRef mimeFileName = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginMIMETypesFilename"));
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if (!mimeFileName || ::CFGetTypeID(mimeFileName) != ::CFStringGetTypeID()) {
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return nullptr;
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}
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FSRef homeDir;
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if (::FSFindFolder(kUserDomain, kCurrentUserFolderType, kDontCreateFolder, &homeDir) != noErr) {
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return nullptr;
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}
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CFURLRef userDirURL = ::CFURLCreateFromFSRef(kCFAllocatorDefault, &homeDir);
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if (!userDirURL) {
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return nullptr;
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}
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AutoCFTypeObject userDirURLAutorelease(userDirURL);
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CFStringRef mimeFilePath = ::CFStringCreateWithFormat(kCFAllocatorDefault, nullptr, CFSTR("Library/Preferences/%@"), static_cast<CFStringRef>(mimeFileName));
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if (!mimeFilePath) {
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return nullptr;
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}
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AutoCFTypeObject mimeFilePathAutorelease(mimeFilePath);
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CFURLRef mimeFileURL = ::CFURLCreateWithFileSystemPathRelativeToBase(kCFAllocatorDefault, mimeFilePath, kCFURLPOSIXPathStyle, false, userDirURL);
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if (!mimeFileURL) {
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return nullptr;
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}
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AutoCFTypeObject mimeFileURLAutorelease(mimeFileURL);
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SInt32 errorCode = 0;
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CFDataRef mimeFileData = nullptr;
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Boolean result = ::CFURLCreateDataAndPropertiesFromResource(kCFAllocatorDefault, mimeFileURL, &mimeFileData, nullptr, nullptr, &errorCode);
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if (!result) {
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return nullptr;
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}
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AutoCFTypeObject mimeFileDataAutorelease(mimeFileData);
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if (errorCode != 0) {
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return nullptr;
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}
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CFPropertyListRef propertyList = ::CFPropertyListCreateFromXMLData(kCFAllocatorDefault, mimeFileData, kCFPropertyListImmutable, nullptr);
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if (!propertyList) {
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return nullptr;
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}
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AutoCFTypeObject propertyListAutorelease(propertyList);
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if (::CFGetTypeID(propertyList) != ::CFDictionaryGetTypeID()) {
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return nullptr;
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}
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CFTypeRef mimeTypes = ::CFDictionaryGetValue(static_cast<CFDictionaryRef>(propertyList), CFSTR("WebPluginMIMETypes"));
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if (!mimeTypes || ::CFGetTypeID(mimeTypes) != ::CFDictionaryGetTypeID() || ::CFDictionaryGetCount(static_cast<CFDictionaryRef>(mimeTypes)) == 0) {
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return nullptr;
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}
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return static_cast<CFDictionaryRef>(::CFRetain(mimeTypes));
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}
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static void ParsePlistPluginInfo(nsPluginInfo& info, CFBundleRef bundle)
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{
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CFDictionaryRef mimeDict = ParsePlistForMIMETypesFilename(bundle);
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if (!mimeDict) {
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CFTypeRef mimeTypes = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginMIMETypes"));
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if (!mimeTypes || ::CFGetTypeID(mimeTypes) != ::CFDictionaryGetTypeID() || ::CFDictionaryGetCount(static_cast<CFDictionaryRef>(mimeTypes)) == 0)
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return;
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mimeDict = static_cast<CFDictionaryRef>(::CFRetain(mimeTypes));
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}
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AutoCFTypeObject mimeDictAutorelease(mimeDict);
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int mimeDictKeyCount = ::CFDictionaryGetCount(mimeDict);
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// Allocate memory for mime data
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int mimeDataArraySize = mimeDictKeyCount * sizeof(char*);
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info.fMimeTypeArray = static_cast<char**>(moz_xmalloc(mimeDataArraySize));
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if (!info.fMimeTypeArray)
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return;
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memset(info.fMimeTypeArray, 0, mimeDataArraySize);
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info.fExtensionArray = static_cast<char**>(moz_xmalloc(mimeDataArraySize));
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if (!info.fExtensionArray)
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return;
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memset(info.fExtensionArray, 0, mimeDataArraySize);
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info.fMimeDescriptionArray = static_cast<char**>(moz_xmalloc(mimeDataArraySize));
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if (!info.fMimeDescriptionArray)
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return;
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memset(info.fMimeDescriptionArray, 0, mimeDataArraySize);
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// Allocate memory for mime dictionary keys and values
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nsAutoArrayPtr<CFTypeRef> keys(new CFTypeRef[mimeDictKeyCount]);
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if (!keys)
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return;
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nsAutoArrayPtr<CFTypeRef> values(new CFTypeRef[mimeDictKeyCount]);
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if (!values)
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return;
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info.fVariantCount = 0;
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::CFDictionaryGetKeysAndValues(mimeDict, keys, values);
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for (int i = 0; i < mimeDictKeyCount; i++) {
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CFTypeRef mimeString = keys[i];
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if (!mimeString || ::CFGetTypeID(mimeString) != ::CFStringGetTypeID()) {
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continue;
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}
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CFTypeRef mimeDict = values[i];
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if (mimeDict && ::CFGetTypeID(mimeDict) == ::CFDictionaryGetTypeID()) {
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if (!MimeTypeEnabled(static_cast<CFDictionaryRef>(mimeDict))) {
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continue;
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}
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info.fMimeTypeArray[info.fVariantCount] = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(mimeString));
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if (!info.fMimeTypeArray[info.fVariantCount]) {
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continue;
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}
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CFTypeRef extensions = ::CFDictionaryGetValue(static_cast<CFDictionaryRef>(mimeDict), CFSTR("WebPluginExtensions"));
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if (extensions && ::CFGetTypeID(extensions) == ::CFArrayGetTypeID()) {
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int extensionCount = ::CFArrayGetCount(static_cast<CFArrayRef>(extensions));
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CFMutableStringRef extensionList = ::CFStringCreateMutable(kCFAllocatorDefault, 0);
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for (int j = 0; j < extensionCount; j++) {
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CFTypeRef extension = ::CFArrayGetValueAtIndex(static_cast<CFArrayRef>(extensions), j);
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if (extension && ::CFGetTypeID(extension) == ::CFStringGetTypeID()) {
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if (j > 0)
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::CFStringAppend(extensionList, CFSTR(","));
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::CFStringAppend(static_cast<CFMutableStringRef>(extensionList), static_cast<CFStringRef>(extension));
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}
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}
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info.fExtensionArray[info.fVariantCount] = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(extensionList));
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::CFRelease(extensionList);
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}
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CFTypeRef description = ::CFDictionaryGetValue(static_cast<CFDictionaryRef>(mimeDict), CFSTR("WebPluginTypeDescription"));
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if (description && ::CFGetTypeID(description) == ::CFStringGetTypeID())
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info.fMimeDescriptionArray[info.fVariantCount] = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(description));
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}
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info.fVariantCount++;
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}
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}
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nsPluginFile::nsPluginFile(nsIFile *spec)
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: mPlugin(spec)
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{
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}
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nsPluginFile::~nsPluginFile() {}
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nsresult nsPluginFile::LoadPlugin(PRLibrary **outLibrary)
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{
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if (!mPlugin)
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return NS_ERROR_NULL_POINTER;
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// 64-bit NSPR does not (yet) support bundles. So in 64-bit builds we need
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// (for now) to load the bundle's executable. However this can cause
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// problems: CFBundleCreate() doesn't run the bundle's executable's
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// initialization code, while NSAddImage() and dlopen() do run it. So using
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// NSPR's dyld loading mechanisms here (NSAddImage() or dlopen()) can cause
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// a bundle's initialization code to run earlier than expected, and lead to
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// crashes. See bug 577967.
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#ifdef __LP64__
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char executablePath[PATH_MAX];
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executablePath[0] = '\0';
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nsAutoCString bundlePath;
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mPlugin->GetNativePath(bundlePath);
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CFStringRef pathRef = ::CFStringCreateWithCString(nullptr, bundlePath.get(),
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kCFStringEncodingUTF8);
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if (pathRef) {
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CFURLRef bundleURL = ::CFURLCreateWithFileSystemPath(nullptr, pathRef,
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kCFURLPOSIXPathStyle,
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true);
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if (bundleURL) {
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CFBundleRef bundle = ::CFBundleCreate(nullptr, bundleURL);
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if (bundle) {
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CFURLRef executableURL = ::CFBundleCopyExecutableURL(bundle);
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if (executableURL) {
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if (!::CFURLGetFileSystemRepresentation(executableURL, true, (UInt8*)&executablePath, PATH_MAX))
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executablePath[0] = '\0';
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::CFRelease(executableURL);
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}
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::CFRelease(bundle);
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}
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::CFRelease(bundleURL);
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}
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::CFRelease(pathRef);
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}
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#else
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nsAutoCString bundlePath;
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mPlugin->GetNativePath(bundlePath);
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const char *executablePath = bundlePath.get();
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#endif
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*outLibrary = PR_LoadLibrary(executablePath);
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pLibrary = *outLibrary;
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if (!pLibrary) {
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return NS_ERROR_FAILURE;
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}
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#ifdef DEBUG
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printf("[loaded plugin %s]\n", bundlePath.get());
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#endif
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return NS_OK;
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}
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static char* p2cstrdup(StringPtr pstr)
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{
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int len = pstr[0];
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char* cstr = static_cast<char*>(moz_xmalloc(len + 1));
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if (cstr) {
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memmove(cstr, pstr + 1, len);
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cstr[len] = '\0';
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}
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return cstr;
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}
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static char* GetNextPluginStringFromHandle(Handle h, short *index)
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{
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char *ret = p2cstrdup((unsigned char*)(*h + *index));
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*index += (ret ? strlen(ret) : 0) + 1;
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return ret;
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}
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static bool IsCompatibleArch(nsIFile *file)
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{
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CFURLRef pluginURL = nullptr;
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if (NS_FAILED(toCFURLRef(file, pluginURL)))
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return false;
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bool isPluginFile = false;
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CFBundleRef pluginBundle = ::CFBundleCreate(kCFAllocatorDefault, pluginURL);
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if (pluginBundle) {
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UInt32 packageType, packageCreator;
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::CFBundleGetPackageInfo(pluginBundle, &packageType, &packageCreator);
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if (packageType == 'BRPL' || packageType == 'IEPL' || packageType == 'NSPL') {
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// Get path to plugin as a C string.
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char executablePath[PATH_MAX];
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executablePath[0] = '\0';
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if (!::CFURLGetFileSystemRepresentation(pluginURL, true, (UInt8*)&executablePath, PATH_MAX)) {
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executablePath[0] = '\0';
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}
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uint32_t pluginLibArchitectures;
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nsresult rv = mozilla::ipc::GeckoChildProcessHost::GetArchitecturesForBinary(executablePath, &pluginLibArchitectures);
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if (NS_FAILED(rv)) {
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return false;
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}
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uint32_t supportedArchitectures =
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#ifdef __LP64__
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mozilla::ipc::GeckoChildProcessHost::GetSupportedArchitecturesForProcessType(GeckoProcessType_Plugin);
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#else
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base::GetCurrentProcessArchitecture();
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#endif
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// Consider the plugin architecture valid if there is any overlap in the masks.
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isPluginFile = !!(supportedArchitectures & pluginLibArchitectures);
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}
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::CFRelease(pluginBundle);
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}
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::CFRelease(pluginURL);
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return isPluginFile;
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}
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/**
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* Obtains all of the information currently available for this plugin.
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*/
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nsresult nsPluginFile::GetPluginInfo(nsPluginInfo& info, PRLibrary **outLibrary)
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{
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*outLibrary = nullptr;
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nsresult rv = NS_OK;
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if (!IsCompatibleArch(mPlugin)) {
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return NS_ERROR_FAILURE;
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}
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// clear out the info, except for the first field.
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memset(&info, 0, sizeof(info));
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// Try to get a bundle reference.
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nsAutoCString path;
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if (NS_FAILED(rv = mPlugin->GetNativePath(path)))
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return rv;
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CFBundleRef bundle = getPluginBundle(path.get());
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// fill in full path
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info.fFullPath = PL_strdup(path.get());
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// fill in file name
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nsAutoCString fileName;
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if (NS_FAILED(rv = mPlugin->GetNativeLeafName(fileName)))
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return rv;
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info.fFileName = PL_strdup(fileName.get());
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// Get fName
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if (bundle) {
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CFTypeRef name = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginName"));
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if (name && ::CFGetTypeID(name) == ::CFStringGetTypeID())
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info.fName = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(name));
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}
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// Get fDescription
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if (bundle) {
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CFTypeRef description = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginDescription"));
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if (description && ::CFGetTypeID(description) == ::CFStringGetTypeID())
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info.fDescription = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(description));
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}
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// Get fVersion
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if (bundle) {
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// Look for the release version first
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CFTypeRef version = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("CFBundleShortVersionString"));
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if (!version) // try the build version
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version = ::CFBundleGetValueForInfoDictionaryKey(bundle, kCFBundleVersionKey);
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if (version && ::CFGetTypeID(version) == ::CFStringGetTypeID())
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info.fVersion = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(version));
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}
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// The last thing we need to do is get MIME data
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// fVariantCount, fMimeTypeArray, fExtensionArray, fMimeDescriptionArray
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// First look for data in a bundle plist
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if (bundle) {
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ParsePlistPluginInfo(info, bundle);
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::CFRelease(bundle);
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if (info.fVariantCount > 0)
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return NS_OK;
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}
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// Don't load "fbplugin" or any plugins whose name starts with "fbplugin_"
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// (Facebook plugins) if we're running on OS X 10.10 (Yosemite) or later.
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// A "fbplugin" file crashes on load, in the call to LoadPlugin() below.
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// See bug 1086977.
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if (nsCocoaFeatures::OnYosemiteOrLater()) {
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if (fileName.EqualsLiteral("fbplugin") ||
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StringBeginsWith(fileName, NS_LITERAL_CSTRING("fbplugin_"))) {
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nsAutoCString msg;
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msg.AppendPrintf("Preventing load of %s (see bug 1086977)",
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fileName.get());
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NS_WARNING(msg.get());
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
#if defined(MOZ_CRASHREPORTER)
|
|
// The block above assumes that "fbplugin" is the filename of the plugin
|
|
// to be blocked, or that the filename starts with "fbplugin_". But we
|
|
// don't yet know for sure if this is always true. So for the time being
|
|
// record extra information in our crash logs.
|
|
CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("Bug_1086977"),
|
|
fileName);
|
|
#endif
|
|
}
|
|
|
|
// It's possible that our plugin has 2 entry points that'll give us mime type
|
|
// info. Quicktime does this to get around the need of having admin rights to
|
|
// change mime info in the resource fork. We need to use this info instead of
|
|
// the resource. See bug 113464.
|
|
|
|
// Sadly we have to load the library for this to work.
|
|
rv = LoadPlugin(outLibrary);
|
|
#if defined(MOZ_CRASHREPORTER)
|
|
if (nsCocoaFeatures::OnYosemiteOrLater()) {
|
|
// If we didn't crash in LoadPlugin(), change the previous annotation so we
|
|
// don't sow confusion.
|
|
CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("Bug_1086977"),
|
|
NS_LITERAL_CSTRING("Didn't crash, please ignore"));
|
|
}
|
|
#endif
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// Try to get data from NP_GetMIMEDescription
|
|
if (pLibrary) {
|
|
NP_GETMIMEDESCRIPTION pfnGetMimeDesc = (NP_GETMIMEDESCRIPTION)PR_FindFunctionSymbol(pLibrary, NP_GETMIMEDESCRIPTION_NAME);
|
|
if (pfnGetMimeDesc)
|
|
ParsePluginMimeDescription(pfnGetMimeDesc(), info);
|
|
if (info.fVariantCount)
|
|
return NS_OK;
|
|
}
|
|
|
|
// We'll fill this in using BP_GetSupportedMIMETypes and/or resource fork data
|
|
BPSupportedMIMETypes mi = {kBPSupportedMIMETypesStructVers_1, nullptr, nullptr};
|
|
|
|
// Try to get data from BP_GetSupportedMIMETypes
|
|
if (pLibrary) {
|
|
BP_GETSUPPORTEDMIMETYPES pfnMime = (BP_GETSUPPORTEDMIMETYPES)PR_FindFunctionSymbol(pLibrary, "BP_GetSupportedMIMETypes");
|
|
if (pfnMime && noErr == pfnMime(&mi, 0) && mi.typeStrings) {
|
|
info.fVariantCount = (**(short**)mi.typeStrings) / 2;
|
|
::HLock(mi.typeStrings);
|
|
if (mi.infoStrings) // it's possible some plugins have infoStrings missing
|
|
::HLock(mi.infoStrings);
|
|
}
|
|
}
|
|
|
|
// Fill in the info struct based on the data in the BPSupportedMIMETypes struct
|
|
int variantCount = info.fVariantCount;
|
|
info.fMimeTypeArray = static_cast<char**>(moz_xmalloc(variantCount * sizeof(char*)));
|
|
if (!info.fMimeTypeArray)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
info.fExtensionArray = static_cast<char**>(moz_xmalloc(variantCount * sizeof(char*)));
|
|
if (!info.fExtensionArray)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
if (mi.infoStrings) {
|
|
info.fMimeDescriptionArray = static_cast<char**>(moz_xmalloc(variantCount * sizeof(char*)));
|
|
if (!info.fMimeDescriptionArray)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
short mimeIndex = 2;
|
|
short descriptionIndex = 2;
|
|
for (int i = 0; i < variantCount; i++) {
|
|
info.fMimeTypeArray[i] = GetNextPluginStringFromHandle(mi.typeStrings, &mimeIndex);
|
|
info.fExtensionArray[i] = GetNextPluginStringFromHandle(mi.typeStrings, &mimeIndex);
|
|
if (mi.infoStrings)
|
|
info.fMimeDescriptionArray[i] = GetNextPluginStringFromHandle(mi.infoStrings, &descriptionIndex);
|
|
}
|
|
|
|
::HUnlock(mi.typeStrings);
|
|
::DisposeHandle(mi.typeStrings);
|
|
if (mi.infoStrings) {
|
|
::HUnlock(mi.infoStrings);
|
|
::DisposeHandle(mi.infoStrings);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsPluginFile::FreePluginInfo(nsPluginInfo& info)
|
|
{
|
|
free(info.fName);
|
|
free(info.fDescription);
|
|
int variantCount = info.fVariantCount;
|
|
for (int i = 0; i < variantCount; i++) {
|
|
free(info.fMimeTypeArray[i]);
|
|
free(info.fExtensionArray[i]);
|
|
free(info.fMimeDescriptionArray[i]);
|
|
}
|
|
free(info.fMimeTypeArray);
|
|
free(info.fMimeDescriptionArray);
|
|
free(info.fExtensionArray);
|
|
free(info.fFileName);
|
|
free(info.fFullPath);
|
|
free(info.fVersion);
|
|
|
|
return NS_OK;
|
|
}
|