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139 lines
4.6 KiB
139 lines
4.6 KiB
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
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* vim: sw=4 ts=4 et : |
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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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#include "mozilla/ipc/IOThreadChild.h" |
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#include "mozilla/plugins/PluginProcessChild.h" |
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#include "prlink.h" |
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#include "base/command_line.h" |
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#include "base/string_util.h" |
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#include "nsDebugImpl.h" |
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#if defined(XP_MACOSX) |
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#include "nsCocoaFeatures.h" |
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// An undocumented CoreGraphics framework method, present in the same form |
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// since at least OS X 10.5. |
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extern "C" CGError CGSSetDebugOptions(int options); |
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#endif |
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#ifdef XP_WIN |
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bool ShouldProtectPluginCurrentDirectory(char16ptr_t pluginFilePath); |
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#endif |
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using mozilla::ipc::IOThreadChild; |
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#ifdef OS_WIN |
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#include "nsSetDllDirectory.h" |
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#include <algorithm> |
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#endif |
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namespace mozilla { |
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namespace plugins { |
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bool |
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PluginProcessChild::Init() |
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{ |
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nsDebugImpl::SetMultiprocessMode("NPAPI"); |
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#if defined(XP_MACOSX) |
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// Remove the trigger for "dyld interposing" that we added in |
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// GeckoChildProcessHost::PerformAsyncLaunchInternal(), in the host |
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// process just before we were launched. Dyld interposing will still |
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// happen in our process (the plugin child process). But we don't want |
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// it to happen in any processes that the plugin might launch from our |
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// process. |
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nsCString interpose(PR_GetEnv("DYLD_INSERT_LIBRARIES")); |
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if (!interpose.IsEmpty()) { |
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// If we added the path to libplugin_child_interpose.dylib to an |
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// existing DYLD_INSERT_LIBRARIES, we appended it to the end, after a |
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// ":" path seperator. |
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int32_t lastSeparatorPos = interpose.RFind(":"); |
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int32_t lastTriggerPos = interpose.RFind("libplugin_child_interpose.dylib"); |
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bool needsReset = false; |
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if (lastTriggerPos != -1) { |
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if (lastSeparatorPos == -1) { |
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interpose.Truncate(); |
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needsReset = true; |
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} else if (lastTriggerPos > lastSeparatorPos) { |
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interpose.SetLength(lastSeparatorPos); |
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needsReset = true; |
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} |
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} |
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if (needsReset) { |
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nsCString setInterpose("DYLD_INSERT_LIBRARIES="); |
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if (!interpose.IsEmpty()) { |
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setInterpose.Append(interpose); |
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} |
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// Values passed to PR_SetEnv() must be seperately allocated. |
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char* setInterposePtr = strdup(setInterpose.get()); |
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PR_SetEnv(setInterposePtr); |
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} |
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} |
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#endif |
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// Certain plugins, such as flash, steal the unhandled exception filter |
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// thus we never get crash reports when they fault. This call fixes it. |
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message_loop()->set_exception_restoration(true); |
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std::string pluginFilename; |
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#if defined(OS_POSIX) |
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// NB: need to be very careful in ensuring that the first arg |
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// (after the binary name) here is indeed the plugin module path. |
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// Keep in sync with dom/plugins/PluginModuleParent. |
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std::vector<std::string> values = CommandLine::ForCurrentProcess()->argv(); |
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MOZ_ASSERT(values.size() >= 2, "not enough args"); |
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pluginFilename = UnmungePluginDsoPath(values[1]); |
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#elif defined(OS_WIN) |
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std::vector<std::wstring> values = |
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CommandLine::ForCurrentProcess()->GetLooseValues(); |
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MOZ_ASSERT(values.size() >= 1, "not enough loose args"); |
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if (ShouldProtectPluginCurrentDirectory(values[0].c_str())) { |
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SanitizeEnvironmentVariables(); |
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SetDllDirectory(L""); |
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} |
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pluginFilename = WideToUTF8(values[0]); |
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#else |
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# error Sorry |
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#endif |
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if (NS_FAILED(nsRegion::InitStatic())) { |
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NS_ERROR("Could not initialize nsRegion"); |
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return false; |
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} |
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bool retval = mPlugin.InitForChrome(pluginFilename, ParentPid(), |
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IOThreadChild::message_loop(), |
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IOThreadChild::channel()); |
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#if defined(XP_MACOSX) |
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if (nsCocoaFeatures::OnYosemiteOrLater()) { |
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// Explicitly turn off CGEvent logging. This works around bug 1092855. |
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// If there are already CGEvents in the log, turning off logging also |
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// causes those events to be written to disk. But at this point no |
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// CGEvents have yet been processed. CGEvents are events (usually |
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// input events) pulled from the WindowServer. An option of 0x80000008 |
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// turns on CGEvent logging. |
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CGSSetDebugOptions(0x80000007); |
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} |
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#endif |
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return retval; |
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} |
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void |
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PluginProcessChild::CleanUp() |
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{ |
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nsRegion::ShutdownStatic(); |
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} |
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} // namespace plugins |
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} // namespace mozilla
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