The Tor Browser / file comparison
comparison: dom/plugins/ipc/PluginProcessChild.cpp
dom/plugins/ipc/PluginProcessChild.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:f50566f4c0b3 |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: sw=4 ts=4 et : | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "mozilla/ipc/IOThreadChild.h" | |
| 8 #include "mozilla/plugins/PluginProcessChild.h" | |
| 9 | |
| 10 #include "prlink.h" | |
| 11 | |
| 12 #include "base/command_line.h" | |
| 13 #include "base/string_util.h" | |
| 14 #include "chrome/common/chrome_switches.h" | |
| 15 | |
| 16 #if defined(XP_MACOSX) | |
| 17 #include "nsCocoaFeatures.h" | |
| 18 // An undocumented CoreGraphics framework method, present in the same form | |
| 19 // since at least OS X 10.5. | |
| 20 extern "C" CGError CGSSetDebugOptions(int options); | |
| 21 #endif | |
| 22 | |
| 23 #ifdef XP_WIN | |
| 24 #include <objbase.h> | |
| 25 bool ShouldProtectPluginCurrentDirectory(char16ptr_t pluginFilePath); | |
| 26 #endif | |
| 27 | |
| 28 using mozilla::ipc::IOThreadChild; | |
| 29 | |
| 30 #ifdef OS_WIN | |
| 31 #include "nsSetDllDirectory.h" | |
| 32 #include <algorithm> | |
| 33 | |
| 34 namespace { | |
| 35 | |
| 36 std::size_t caseInsensitiveFind(std::string aHaystack, std::string aNeedle) { | |
| 37 std::transform(aHaystack.begin(), aHaystack.end(), aHaystack.begin(), ::tolower); | |
| 38 std::transform(aNeedle.begin(), aNeedle.end(), aNeedle.begin(), ::tolower); | |
| 39 return aHaystack.find(aNeedle); | |
| 40 } | |
| 41 | |
| 42 } | |
| 43 #endif | |
| 44 | |
| 45 namespace mozilla { | |
| 46 namespace plugins { | |
| 47 | |
| 48 | |
| 49 bool | |
| 50 PluginProcessChild::Init() | |
| 51 { | |
| 52 #if defined(XP_MACOSX) | |
| 53 // Remove the trigger for "dyld interposing" that we added in | |
| 54 // GeckoChildProcessHost::PerformAsyncLaunchInternal(), in the host | |
| 55 // process just before we were launched. Dyld interposing will still | |
| 56 // happen in our process (the plugin child process). But we don't want | |
| 57 // it to happen in any processes that the plugin might launch from our | |
| 58 // process. | |
| 59 nsCString interpose(PR_GetEnv("DYLD_INSERT_LIBRARIES")); | |
| 60 if (!interpose.IsEmpty()) { | |
| 61 // If we added the path to libplugin_child_interpose.dylib to an | |
| 62 // existing DYLD_INSERT_LIBRARIES, we appended it to the end, after a | |
| 63 // ":" path seperator. | |
| 64 int32_t lastSeparatorPos = interpose.RFind(":"); | |
| 65 int32_t lastTriggerPos = interpose.RFind("libplugin_child_interpose.dylib"); | |
| 66 bool needsReset = false; | |
| 67 if (lastTriggerPos != -1) { | |
| 68 if (lastSeparatorPos == -1) { | |
| 69 interpose.Truncate(); | |
| 70 needsReset = true; | |
| 71 } else if (lastTriggerPos > lastSeparatorPos) { | |
| 72 interpose.SetLength(lastSeparatorPos); | |
| 73 needsReset = true; | |
| 74 } | |
| 75 } | |
| 76 if (needsReset) { | |
| 77 nsCString setInterpose("DYLD_INSERT_LIBRARIES="); | |
| 78 if (!interpose.IsEmpty()) { | |
| 79 setInterpose.Append(interpose); | |
| 80 } | |
| 81 // Values passed to PR_SetEnv() must be seperately allocated. | |
| 82 char* setInterposePtr = strdup(setInterpose.get()); | |
| 83 PR_SetEnv(setInterposePtr); | |
| 84 } | |
| 85 } | |
| 86 #endif | |
| 87 | |
| 88 #ifdef XP_WIN | |
| 89 // Drag-and-drop needs OleInitialize to be called, and Silverlight depends | |
| 90 // on the host calling CoInitialize (which is called by OleInitialize). | |
| 91 ::OleInitialize(nullptr); | |
| 92 #endif | |
| 93 | |
| 94 // Certain plugins, such as flash, steal the unhandled exception filter | |
| 95 // thus we never get crash reports when they fault. This call fixes it. | |
| 96 message_loop()->set_exception_restoration(true); | |
| 97 | |
| 98 std::string pluginFilename; | |
| 99 | |
| 100 #if defined(OS_POSIX) | |
| 101 // NB: need to be very careful in ensuring that the first arg | |
| 102 // (after the binary name) here is indeed the plugin module path. | |
| 103 // Keep in sync with dom/plugins/PluginModuleParent. | |
| 104 std::vector<std::string> values = CommandLine::ForCurrentProcess()->argv(); | |
| 105 NS_ABORT_IF_FALSE(values.size() >= 2, "not enough args"); | |
| 106 | |
| 107 pluginFilename = UnmungePluginDsoPath(values[1]); | |
| 108 | |
| 109 #elif defined(OS_WIN) | |
| 110 std::vector<std::wstring> values = | |
| 111 CommandLine::ForCurrentProcess()->GetLooseValues(); | |
| 112 NS_ABORT_IF_FALSE(values.size() >= 1, "not enough loose args"); | |
| 113 | |
| 114 if (ShouldProtectPluginCurrentDirectory(values[0].c_str())) { | |
| 115 SanitizeEnvironmentVariables(); | |
| 116 SetDllDirectory(L""); | |
| 117 } | |
| 118 | |
| 119 pluginFilename = WideToUTF8(values[0]); | |
| 120 #else | |
| 121 # error Sorry | |
| 122 #endif | |
| 123 | |
| 124 if (NS_FAILED(nsRegion::InitStatic())) { | |
| 125 NS_ERROR("Could not initialize nsRegion"); | |
| 126 return false; | |
| 127 } | |
| 128 | |
| 129 bool retval = mPlugin.Init(pluginFilename, ParentHandle(), | |
| 130 IOThreadChild::message_loop(), | |
| 131 IOThreadChild::channel()); | |
| 132 #if defined(XP_MACOSX) | |
| 133 if (nsCocoaFeatures::OnYosemiteOrLater()) { | |
| 134 // Explicitly turn off CGEvent logging. This works around bug 1092855. | |
| 135 // If there are already CGEvents in the log, turning off logging also | |
| 136 // causes those events to be written to disk. But at this point no | |
| 137 // CGEvents have yet been processed. CGEvents are events (usually | |
| 138 // input events) pulled from the WindowServer. An option of 0x80000008 | |
| 139 // turns on CGEvent logging. | |
| 140 CGSSetDebugOptions(0x80000007); | |
| 141 } | |
| 142 #endif | |
| 143 return retval; | |
| 144 } | |
| 145 | |
| 146 void | |
| 147 PluginProcessChild::CleanUp() | |
| 148 { | |
| 149 #ifdef XP_WIN | |
| 150 ::OleUninitialize(); | |
| 151 #endif | |
| 152 nsRegion::ShutdownStatic(); | |
| 153 } | |
| 154 | |
| 155 } // namespace plugins | |
| 156 } // namespace mozilla |
