1 // Copyright (c) 2013 Intel Corporation. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "xwalk/extensions/browser/xwalk_extension_process_host.h"
9 #include "base/command_line.h"
10 #include "base/logging.h"
11 #include "base/files/file_path.h"
12 #include "content/public/browser/browser_child_process_host.h"
13 #include "content/public/browser/browser_thread.h"
14 #include "content/public/browser/render_process_host.h"
15 #include "content/public/common/child_process_host.h"
16 #include "content/public/common/process_type.h"
17 #include "content/public/common/content_switches.h"
18 #include "content/public/common/sandboxed_process_launcher_delegate.h"
19 #include "ipc/ipc_message.h"
20 #include "ipc/ipc_switches.h"
21 #include "ipc/message_filter.h"
22 #include "xwalk/extensions/common/xwalk_extension_messages.h"
23 #include "xwalk/extensions/common/xwalk_extension_switches.h"
24 #include "xwalk/runtime/common/xwalk_switches.h"
26 using content::BrowserThread;
29 namespace extensions {
31 // This filter is used by ExtensionProcessHost to intercept when Render Process
32 // ask for the Extension Channel handle (that is created by extension process).
33 class XWalkExtensionProcessHost::RenderProcessMessageFilter
34 : public IPC::MessageFilter {
36 explicit RenderProcessMessageFilter(XWalkExtensionProcessHost* eph)
39 // This exists to fulfill the requirement for delayed reply handling, since it
40 // needs to send a message back if the parameters couldn't be correctly read
41 // from the original message received. See DispatchDealyReplyWithSendParams().
42 bool Send(IPC::Message* message) {
44 return eph_->render_process_host_->Send(message);
54 // IPC::ChannelProxy::MessageFilter implementation.
55 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
57 IPC_BEGIN_MESSAGE_MAP(RenderProcessMessageFilter, message)
58 IPC_MESSAGE_HANDLER_DELAY_REPLY(
59 XWalkExtensionProcessHostMsg_GetExtensionProcessChannel,
60 OnGetExtensionProcessChannel)
61 IPC_MESSAGE_UNHANDLED(handled = false)
66 void OnGetExtensionProcessChannel(IPC::Message* reply) {
67 scoped_ptr<IPC::Message> scoped_reply(reply);
69 eph_->OnGetExtensionProcessChannel(scoped_reply.Pass());
72 virtual ~RenderProcessMessageFilter() {}
74 XWalkExtensionProcessHost* eph_;
77 class ExtensionSandboxedProcessLauncherDelegate
78 : public content::SandboxedProcessLauncherDelegate {
80 explicit ExtensionSandboxedProcessLauncherDelegate(
81 content::ChildProcessHost* host)
83 : ipc_fd_(host->TakeClientFileDescriptor())
86 virtual ~ExtensionSandboxedProcessLauncherDelegate() {}
89 virtual bool ShouldSandbox() OVERRIDE {
92 #elif defined(OS_POSIX)
93 virtual int GetIpcFd() OVERRIDE {
103 DISALLOW_COPY_AND_ASSIGN(ExtensionSandboxedProcessLauncherDelegate);
106 bool XWalkExtensionProcessHost::Delegate::OnRegisterPermissions(
107 int render_process_id,
108 const std::string& extension_name,
109 const std::string& perm_table) {
113 XWalkExtensionProcessHost::XWalkExtensionProcessHost(
114 content::RenderProcessHost* render_process_host,
115 const base::FilePath& external_extensions_path,
116 XWalkExtensionProcessHost::Delegate* delegate,
117 scoped_ptr<base::ValueMap> runtime_variables)
118 : ep_rp_channel_handle_(""),
119 render_process_host_(render_process_host),
120 render_process_message_filter_(new RenderProcessMessageFilter(this)),
121 external_extensions_path_(external_extensions_path),
122 is_extension_process_channel_ready_(false),
124 runtime_variables_(runtime_variables.Pass()) {
125 render_process_host_->GetChannel()->AddFilter(
126 render_process_message_filter_.get());
127 BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
128 base::Bind(&XWalkExtensionProcessHost::StartProcess,
129 base::Unretained(this)));
132 XWalkExtensionProcessHost::~XWalkExtensionProcessHost() {
133 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
134 render_process_message_filter_->Invalidate();
140 void ToListValue(base::ValueMap* vm, base::ListValue* lv) {
143 for (base::ValueMap::iterator it = vm->begin(); it != vm->end(); it++) {
144 base::DictionaryValue* dv = new base::DictionaryValue();
145 dv->Set(it->first, it->second);
152 void XWalkExtensionProcessHost::StartProcess() {
153 CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
154 CHECK(!process_ || !channel_);
156 #if defined(SHARED_PROCESS_MODE)
157 #if defined(OS_LINUX)
158 std::string channel_id =
159 IPC::Channel::GenerateVerifiedChannelID(std::string());
160 channel_ = IPC::Channel::CreateServer(channel_id, this);
161 if (!channel_->Connect())
163 IPC::ChannelHandle channel_handle(channel_id,
164 base::FileDescriptor(channel_->TakeClientFileDescriptor(), true));
165 BrowserThread::PostTask(
166 BrowserThread::UI, FROM_HERE,
168 &XWalkExtensionProcessHost::Delegate::OnExtensionProcessCreated,
169 base::Unretained(delegate_), render_process_host_->GetID(),
173 #endif // #if defined(OS_LINUX)
175 process_.reset(content::BrowserChildProcessHost::Create(
176 content::PROCESS_TYPE_CONTENT_END, this));
178 std::string channel_id = process_->GetHost()->CreateChannel();
179 CHECK(!channel_id.empty());
181 CommandLine::StringType extension_cmd_prefix;
182 #if defined(OS_POSIX)
183 const CommandLine &browser_command_line = *CommandLine::ForCurrentProcess();
184 extension_cmd_prefix = browser_command_line.GetSwitchValueNative(
185 switches::kXWalkExtensionCmdPrefix);
188 #if defined(OS_LINUX)
189 int flags = extension_cmd_prefix.empty() ?
190 content::ChildProcessHost::CHILD_ALLOW_SELF :
191 content::ChildProcessHost::CHILD_NORMAL;
193 int flags = content::ChildProcessHost::CHILD_NORMAL;
196 base::FilePath exe_path = content::ChildProcessHost::GetChildPath(flags);
197 if (exe_path.empty())
200 scoped_ptr<CommandLine> cmd_line(new CommandLine(exe_path));
201 cmd_line->AppendSwitchASCII(switches::kProcessType,
202 switches::kXWalkExtensionProcess);
203 cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id);
204 if (!extension_cmd_prefix.empty())
205 cmd_line->PrependWrapper(extension_cmd_prefix);
208 new ExtensionSandboxedProcessLauncherDelegate(process_->GetHost()),
210 #endif // #if defined(SHARED_PROCESS_MODE)
212 base::ListValue runtime_variables_lv;
213 ToListValue(&const_cast<base::ValueMap&>(*runtime_variables_),
214 &runtime_variables_lv);
215 Send(new XWalkExtensionProcessMsg_RegisterExtensions(
216 external_extensions_path_, runtime_variables_lv));
219 void XWalkExtensionProcessHost::StopProcess() {
226 void XWalkExtensionProcessHost::OnGetExtensionProcessChannel(
227 scoped_ptr<IPC::Message> reply) {
228 pending_reply_for_render_process_ = reply.Pass();
229 ReplyChannelHandleToRenderProcess();
232 bool XWalkExtensionProcessHost::OnMessageReceived(const IPC::Message& message) {
234 IPC_BEGIN_MESSAGE_MAP(XWalkExtensionProcessHost, message)
236 XWalkExtensionProcessHostMsg_RenderProcessChannelCreated,
237 OnRenderChannelCreated)
238 IPC_MESSAGE_HANDLER_DELAY_REPLY(
239 XWalkExtensionProcessHostMsg_CheckAPIAccessControl,
240 OnCheckAPIAccessControl)
242 XWalkExtensionProcessHostMsg_RegisterPermissions,
243 OnRegisterPermissions)
244 IPC_MESSAGE_UNHANDLED(handled = false)
245 IPC_END_MESSAGE_MAP()
249 void XWalkExtensionProcessHost::OnChannelError() {
250 // This function is called just before
251 // BrowserChildProcessHostImpl::OnChildDisconnected gets called. Please refer
252 // to ChildProcessHostImpl::OnChannelError() from child_process_host_impl.cc.
253 // This means that content::BrowserChildProcessHost (process_, in our case)
254 // is about to delete its delegate, which is us!
255 // We should alert our XWalkExtensionProcessHost::Delegate, since it will
256 // most likely have a pointer to us that needs to be invalidated.
258 VLOG(1) << "\n\nExtensionProcess crashed";
260 delegate_->OnExtensionProcessDied(this, render_process_host_->GetID());
263 void XWalkExtensionProcessHost::OnProcessLaunched() {
264 VLOG(1) << "\n\nExtensionProcess was started!";
267 void XWalkExtensionProcessHost::OnRenderChannelCreated(
268 const IPC::ChannelHandle& handle) {
269 is_extension_process_channel_ready_ = true;
270 ep_rp_channel_handle_ = handle;
271 ReplyChannelHandleToRenderProcess();
273 delegate_->OnRenderChannelCreated(render_process_host_->GetID());
276 void XWalkExtensionProcessHost::ReplyChannelHandleToRenderProcess() {
277 // Replying the channel handle to RP depends on two events:
278 // - EP already notified EPH that new channel was created (for RP<->EP).
279 // - RP already asked for the channel handle.
281 // The order for this events is not determined, so we call this function from
282 // both, and the second execution will send the reply.
283 if (!is_extension_process_channel_ready_
284 || !pending_reply_for_render_process_)
287 XWalkExtensionProcessHostMsg_GetExtensionProcessChannel::WriteReplyParams(
288 pending_reply_for_render_process_.get(), ep_rp_channel_handle_);
290 render_process_host_->Send(pending_reply_for_render_process_.release());
293 void XWalkExtensionProcessHost::ReplyAccessControlToExtension(
294 IPC::Message* reply_msg,
295 RuntimePermission perm) {
296 XWalkExtensionProcessHostMsg_CheckAPIAccessControl
297 ::WriteReplyParams(reply_msg, perm);
301 void XWalkExtensionProcessHost::OnCheckAPIAccessControl(
302 const std::string& extension_name,
303 const std::string& api_name, IPC::Message* reply_msg) {
305 delegate_->OnCheckAPIAccessControl(render_process_host_->GetID(),
306 extension_name, api_name,
307 base::Bind(&XWalkExtensionProcessHost::ReplyAccessControlToExtension,
308 base::Unretained(this),
312 void XWalkExtensionProcessHost::OnRegisterPermissions(
313 const std::string& extension_name,
314 const std::string& perm_table, bool* result) {
316 *result = delegate_->OnRegisterPermissions(
317 render_process_host_->GetID(), extension_name, perm_table);
320 bool XWalkExtensionProcessHost::Send(IPC::Message* msg) {
322 return process_->GetHost()->Send(msg);
324 return channel_->Send(msg);
328 } // namespace extensions