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Side by Side Diff: ppapi/proxy/dispatcher.h

Issue 6286070: Remove all uses of the global Dispatcher Get function. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 9 years, 10 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef PPAPI_PROXY_DISPATCHER_H_ 5 #ifndef PPAPI_PROXY_DISPATCHER_H_
6 #define PPAPI_PROXY_DISPATCHER_H_ 6 #define PPAPI_PROXY_DISPATCHER_H_
7 7
8 #include <map> 8 #include <map>
9 #include <string> 9 #include <string>
10 #include <vector> 10 #include <vector>
11 11
12 #include "base/linked_ptr.h" 12 #include "base/linked_ptr.h"
13 #include "base/process.h" 13 #include "base/process.h"
14 #include "base/scoped_ptr.h" 14 #include "base/scoped_ptr.h"
15 #include "ipc/ipc_channel.h" 15 #include "ipc/ipc_channel.h"
16 #include "ipc/ipc_channel_handle.h" 16 #include "ipc/ipc_channel_handle.h"
17 #include "ipc/ipc_message.h" 17 #include "ipc/ipc_message.h"
18 #include "ppapi/c/pp_module.h" 18 #include "ppapi/c/pp_module.h"
19 #include "ppapi/proxy/callback_tracker.h" 19 #include "ppapi/proxy/callback_tracker.h"
20 #include "ppapi/proxy/interface_id.h" 20 #include "ppapi/proxy/interface_id.h"
21 #include "ppapi/proxy/interface_proxy.h"
21 #include "ppapi/proxy/plugin_var_tracker.h" 22 #include "ppapi/proxy/plugin_var_tracker.h"
22 23
23 class MessageLoop; 24 class MessageLoop;
24 struct PPB_Var_Deprecated; 25 struct PPB_Var_Deprecated;
25 26
26 namespace base { 27 namespace base {
27 class WaitableEvent; 28 class WaitableEvent;
28 } 29 }
29 30
30 namespace IPC { 31 namespace IPC {
31 class SyncChannel; 32 class SyncChannel;
32 class TestSink; 33 class TestSink;
33 } 34 }
34 35
35 namespace pp { 36 namespace pp {
36 namespace proxy { 37 namespace proxy {
37 38
38 class InterfaceProxy;
39 class VarSerializationRules; 39 class VarSerializationRules;
40 40
41 // An interface proxy can represent either end of a cross-process interface 41 // An interface proxy can represent either end of a cross-process interface
42 // call. The "source" side is where the call is invoked, and the "target" side 42 // call. The "source" side is where the call is invoked, and the "target" side
43 // is where the call ends up being executed. 43 // is where the call ends up being executed.
44 // 44 //
45 // Plugin side | Browser side 45 // Plugin side | Browser side
46 // -------------------------------------|-------------------------------------- 46 // -------------------------------------|--------------------------------------
47 // | 47 // |
48 // "Source" | "Target" 48 // "Source" | "Target"
(...skipping 30 matching lines...) Expand all
79 VarSerializationRules* serialization_rules() const { 79 VarSerializationRules* serialization_rules() const {
80 return serialization_rules_.get(); 80 return serialization_rules_.get();
81 } 81 }
82 PP_Module pp_module() const { 82 PP_Module pp_module() const {
83 return pp_module_; 83 return pp_module_;
84 } 84 }
85 85
86 // Wrapper for calling the local GetInterface function. 86 // Wrapper for calling the local GetInterface function.
87 const void* GetLocalInterface(const char* interface); 87 const void* GetLocalInterface(const char* interface);
88 88
89 // Implements PPP_GetInterface and PPB_GetInterface on the "source" side. It
90 // will check if the remote side supports this interface as a target, and
91 // create a proxy if it does. A local implementation of that interface backed
92 // by the proxy will be returned on success. If the interface is unproxyable
93 // or not supported by the remote side, returns NULL.
94 const void* GetProxiedInterface(const std::string& interface);
95
96 // Returns the remote process' handle. For the host dispatcher, this will be 89 // Returns the remote process' handle. For the host dispatcher, this will be
97 // the plugin process, and for the plugin dispatcher, this will be the 90 // the plugin process, and for the plugin dispatcher, this will be the
98 // renderer process. This is used for sharing memory and such and is 91 // renderer process. This is used for sharing memory and such and is
99 // guaranteed valid (unless the remote process has suddenly died). 92 // guaranteed valid (unless the remote process has suddenly died).
100 base::ProcessHandle remote_process_handle() const { 93 base::ProcessHandle remote_process_handle() const {
101 return remote_process_handle_; 94 return remote_process_handle_;
102 } 95 }
103 96
104 // Called if the remote side is declaring to us which interfaces it supports 97 // Called if the remote side is declaring to us which interfaces it supports
105 // so we don't have to query for each one. We'll pre-create proxies for 98 // so we don't have to query for each one. We'll pre-create proxies for
106 // each of the given interfaces. 99 // each of the given interfaces.
107 100
108 // IPC::Message::Sender implementation. 101 // IPC::Message::Sender implementation.
109 virtual bool Send(IPC::Message* msg); 102 virtual bool Send(IPC::Message* msg);
110 103
111 // IPC::Channel::Listener implementation. 104 // IPC::Channel::Listener implementation.
112 virtual bool OnMessageReceived(const IPC::Message& msg); 105 virtual bool OnMessageReceived(const IPC::Message& msg);
113 106
114 // Will be NULL in some unit tests. 107 // Will be NULL in some unit tests.
115 IPC::SyncChannel* channel() const { 108 IPC::SyncChannel* channel() const {
116 return channel_.get(); 109 return channel_.get();
117 } 110 }
118 111
119 CallbackTracker& callback_tracker() { 112 CallbackTracker& callback_tracker() {
120 return callback_tracker_; 113 return callback_tracker_;
121 } 114 }
122 115
116 // Retrieves the information associated with the given interface, identified
117 // either by name or ID. Each function searches either PPP or PPB interfaces.
118 static const InterfaceProxy::Info* GetPPBInterfaceInfo(
119 const std::string& name);
120 static const InterfaceProxy::Info* GetPPBInterfaceInfo(
121 InterfaceID id);
122 static const InterfaceProxy::Info* GetPPPInterfaceInfo(
123 const std::string& name);
124 static const InterfaceProxy::Info* GetPPPInterfaceInfo(
125 InterfaceID id);
126
123 protected: 127 protected:
124 Dispatcher(base::ProcessHandle remote_process_handle, 128 Dispatcher(base::ProcessHandle remote_process_handle,
125 GetInterfaceFunc local_get_interface); 129 GetInterfaceFunc local_get_interface);
126 130
127 // Setter for the derived classes to set the appropriate var serialization. 131 // Setter for the derived classes to set the appropriate var serialization.
128 // Takes ownership of the given pointer, which must be on the heap. 132 // Takes ownership of the given pointer, which must be on the heap.
129 void SetSerializationRules(VarSerializationRules* var_serialization_rules); 133 void SetSerializationRules(VarSerializationRules* var_serialization_rules);
130 134
131 void set_pp_module(PP_Module module) { 135 void set_pp_module(PP_Module module) {
132 pp_module_ = module; 136 pp_module_ = module;
133 } 137 }
134 138
135 // Allows the PluginDispatcher to add a magic proxy for PPP_Class, bypassing 139 bool disallow_trusted_interfaces() const {
136 // the normal "do you support this proxy" stuff and the big lookup of 140 return disallow_trusted_interfaces_;
137 // name to proxy object. Takes ownership of the pointer. 141 }
138 void InjectProxy(InterfaceID id,
139 const std::string& name,
140 InterfaceProxy* proxy);
141 142
142 private: 143 private:
143 typedef std::map< std::string, linked_ptr<InterfaceProxy> > ProxyMap;
144
145 // Message handlers
146 void OnMsgSupportsInterface(const std::string& interface_name, bool* result);
147 void OnMsgDeclareInterfaces(const std::vector<std::string>& interfaces);
148
149 // Allocates a new proxy on the heap corresponding to the given interface
150 // name, or returns NULL if that interface name isn't known proxyable. The
151 // caller owns the returned pointer.
152 //
153 // The interface_functions gives the pointer to the local interfece when this
154 // is a target proxy. When creating a source proxy, set this to NULL.
155 InterfaceProxy* CreateProxyForInterface(
156 const std::string& interface_name,
157 const void* interface_functions);
158
159 // Returns true if the remote side supports the given interface as the
160 // target of an IPC call.
161 bool RemoteSupportsTargetInterface(const std::string& interface);
162
163 // Sets up a proxy as the target for the given interface, if it is supported.
164 // Returns true if this process implements the given interface and it is
165 // proxyable.
166 bool SetupProxyForTargetInterface(const std::string& interface);
167
168 bool IsInterfaceTrusted(const std::string& interface);
169
170 // Set by the derived classed to indicate the module ID corresponding to 144 // Set by the derived classed to indicate the module ID corresponding to
171 // this dispatcher. 145 // this dispatcher.
172 PP_Module pp_module_; 146 PP_Module pp_module_;
173 147
174 base::ProcessHandle remote_process_handle_; // See getter above. 148 base::ProcessHandle remote_process_handle_; // See getter above.
175 149
176 // When we're unit testing, this will indicate the sink for the messages to 150 // When we're unit testing, this will indicate the sink for the messages to
177 // be deposited so they can be inspected by the test. When non-NULL, this 151 // be deposited so they can be inspected by the test. When non-NULL, this
178 // indicates that the channel should not be used. 152 // indicates that the channel should not be used.
179 IPC::TestSink* test_sink_; 153 IPC::TestSink* test_sink_;
180 154
181 // Will be null for some tests when there is a test_sink_. 155 // Will be null for some tests when there is a test_sink_.
182 scoped_ptr<IPC::SyncChannel> channel_; 156 scoped_ptr<IPC::SyncChannel> channel_;
183 157
184 bool disallow_trusted_interfaces_; 158 bool disallow_trusted_interfaces_;
185 159
186 GetInterfaceFunc local_get_interface_; 160 GetInterfaceFunc local_get_interface_;
187 161
188 ProxyMap proxies_;
189 InterfaceProxy* id_to_proxy_[INTERFACE_ID_COUNT];
190
191 // True if the remote side has declared which interfaces it supports in
192 // advance. When set, it means if we don't already have a source proxy for
193 // the requested interface, that the remote side doesn't support it and
194 // we don't need to query.
195 //
196 // This is just an optimization. The browser has a fixed set of interfaces
197 // it supports, and the many plugins will end up querying many of them. By
198 // having the browser just send all of those interfaces in one message, we
199 // can avoid a bunch of IPC chatter to set up each interface.
200 bool declared_supported_remote_interfaces_;
201
202 CallbackTracker callback_tracker_; 162 CallbackTracker callback_tracker_;
203 163
204 scoped_ptr<VarSerializationRules> serialization_rules_; 164 scoped_ptr<VarSerializationRules> serialization_rules_;
205 165
206 DISALLOW_COPY_AND_ASSIGN(Dispatcher); 166 DISALLOW_COPY_AND_ASSIGN(Dispatcher);
207 }; 167 };
208 168
209 } // namespace proxy 169 } // namespace proxy
210 } // namespace pp 170 } // namespace pp
211 171
212 #endif // PPAPI_PROXY_DISPATCHER_H_ 172 #endif // PPAPI_PROXY_DISPATCHER_H_
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