Private Pepper extension for Flapper to allow TCP connections to be made

(from inside the renderer sandbox).

(Only enabled on ChromeOS, since it opens a hole in the renderer. This should be
revisited, with controls tightened, once Flapper runs out of process.)

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/5098002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70687 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 145 insertions, 1 deletions

diff --git a/ppapi/c/private/ppb_flash.h b/ppapi/c/private/ppb_flash.h
index ccc2f0a..49535e4 100644
--- a/ppapi/c/private/ppb_flash.h
+++ b/ppapi/c/private/ppb_flash.h
@@ -17,7 +17,9 @@
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
 
-#define PPB_FLASH_INTERFACE "PPB_Flash;1"
+// PPB_Flash -------------------------------------------------------------------
+
+#define PPB_FLASH_INTERFACE "PPB_Flash;2"
 
 #ifdef _WIN32
 typedef HANDLE PP_FileHandle;
@@ -27,6 +29,7 @@ typedef int PP_FileHandle;
 static const PP_FileHandle PP_kInvalidFileHandle = -1;
 #endif
 
+struct PP_CompletionCallback;
 struct PP_FontDescription_Dev;
 struct PP_FileInfo_Dev;
 
@@ -114,4 +117,39 @@ struct PPB_Flash {
                         const char* target);
 };
 
+// PPB_Flash_NetConnector ------------------------------------------------------
+
+#define PPB_FLASH_NETCONNECTOR_INTERFACE "PPB_Flash_NetConnector;1"
+
+// This is an opaque type holding a network address.
+struct PP_Flash_NetAddress {
+  size_t size;
+  char data[128];
+};
+
+struct PPB_Flash_NetConnector {
+  PP_Resource (*Create)(PP_Instance instance_id);
+  PP_Bool (*IsFlashNetConnector)(PP_Resource resource_id);
+
+  // Connect to a TCP port given as a host-port pair. The local and remote
+  // addresses of the connection (if successful) are returned in
+  // |local_addr_out| and |remote_addr_out|, respectively, if non-null.
+  int32_t (*ConnectTcp)(PP_Resource connector_id,
+                        const char* host,
+                        uint16_t port,
+                        PP_FileHandle* socket_out,
+                        struct PP_Flash_NetAddress* local_addr_out,
+                        struct PP_Flash_NetAddress* remote_addr_out,
+                        PP_CompletionCallback callback);
+
+  // Same as |ConnectTcp()|, but connecting to the address given by |addr|. A
+  // typical use-case would be for reconnections.
+  int32_t (*ConnectTcpAddress)(PP_Resource connector_id,
+                               const struct PP_Flash_NetAddress* addr,
+                               PP_FileHandle* socket_out,
+                               struct PP_Flash_NetAddress* local_addr_out,
+                               struct PP_Flash_NetAddress* remote_addr_out,
+                               PP_CompletionCallback callback);
+};
+
 #endif  // PPAPI_C_PRIVATE_PPB_FLASH_H_
diff --git a/ppapi/cpp/private/flash.cc b/ppapi/cpp/private/flash.cc
new file mode 100644
index 0000000..5af96bc
--- /dev/null
+++ b/ppapi/cpp/private/flash.cc
@@ -0,0 +1,64 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(viettrungluu): See the comment in corresponding .h file.
+
+#include "ppapi/cpp/private/flash.h"
+
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/module_impl.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_Flash_NetConnector>() {
+  return PPB_FLASH_NETCONNECTOR_INTERFACE;
+}
+
+}  // namespace
+
+namespace flash {
+
+NetConnector::NetConnector(const Instance& instance) {
+  if (has_interface<PPB_Flash_NetConnector>()) {
+    PassRefFromConstructor(get_interface<PPB_Flash_NetConnector>()->Create(
+        instance.pp_instance()));
+  }
+}
+
+int32_t NetConnector::ConnectTcp(const char* host,
+                                 uint16_t port,
+                                 PP_FileHandle* socket_out,
+                                 PP_Flash_NetAddress* local_addr_out,
+                                 PP_Flash_NetAddress* remote_addr_out,
+                                 const CompletionCallback& cc) {
+  if (!has_interface<PPB_Flash_NetConnector>())
+    return PP_ERROR_NOINTERFACE;
+  return get_interface<PPB_Flash_NetConnector>()->ConnectTcp(
+      pp_resource(),
+      host, port,
+      socket_out, local_addr_out, remote_addr_out,
+      cc.pp_completion_callback());
+}
+
+int32_t NetConnector::ConnectTcpAddress(const PP_Flash_NetAddress* addr,
+                                        PP_FileHandle* socket_out,
+                                        PP_Flash_NetAddress* local_addr_out,
+                                        PP_Flash_NetAddress* remote_addr_out,
+                                        const CompletionCallback& cc) {
+  if (!has_interface<PPB_Flash_NetConnector>())
+    return PP_ERROR_NOINTERFACE;
+  return get_interface<PPB_Flash_NetConnector>()->ConnectTcpAddress(
+      pp_resource(),
+      addr,
+      socket_out, local_addr_out, remote_addr_out,
+      cc.pp_completion_callback());
+}
+
+}  // namespace flash
+}  // namespace pp
diff --git a/ppapi/cpp/private/flash.h b/ppapi/cpp/private/flash.h
new file mode 100644
index 0000000..ffd1353
--- /dev/null
+++ b/ppapi/cpp/private/flash.h
@@ -0,0 +1,42 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// TODO(viettrungluu): This (and the .cc file) contain C++ wrappers for some
+// things in ppapi/c/private/ppb_flash.h. This is currently not used in (or even
+// compiled with) Chromium.
+
+#ifndef PPAPI_CPP_PRIVATE_FLASH_H_
+#define PPAPI_CPP_PRIVATE_FLASH_H_
+
+#include "ppapi/c/private/ppb_flash.h"
+#include "ppapi/cpp/resource.h"
+
+namespace pp {
+
+class CompletionCallback;
+class Instance;
+
+namespace flash {
+
+class NetConnector : public Resource {
+ public:
+  explicit NetConnector(const Instance& instance);
+
+  int32_t ConnectTcp(const char* host,
+                     uint16_t port,
+                     PP_FileHandle* socket_out,
+                     PP_Flash_NetAddress* local_addr_out,
+                     PP_Flash_NetAddress* remote_addr_out,
+                     const CompletionCallback& cc);
+  int32_t ConnectTcpAddress(const PP_Flash_NetAddress* addr,
+                            PP_FileHandle* socket_out,
+                            PP_Flash_NetAddress* local_addr_out,
+                            PP_Flash_NetAddress* remote_addr_out,
+                            const CompletionCallback& cc);
+};
+
+}  // namespace flash
+}  // namespace pp
+
+#endif  // PPAPI_CPP_PRIVATE_FLASH_H_