1// Copyright 2013 The Chromium Authors. 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. 4 5#include "chrome/renderer/extensions/extension_localization_peer.h" 6 7#include "base/memory/scoped_ptr.h" 8#include "base/strings/string_util.h" 9#include "chrome/common/url_constants.h" 10#include "extensions/common/constants.h" 11#include "extensions/common/extension_messages.h" 12#include "extensions/common/message_bundle.h" 13#include "ipc/ipc_sender.h" 14#include "net/base/net_errors.h" 15#include "net/http/http_response_headers.h" 16 17ExtensionLocalizationPeer::ExtensionLocalizationPeer( 18 content::RequestPeer* peer, 19 IPC::Sender* message_sender, 20 const GURL& request_url) 21 : original_peer_(peer), 22 message_sender_(message_sender), 23 request_url_(request_url) { 24} 25 26ExtensionLocalizationPeer::~ExtensionLocalizationPeer() { 27} 28 29// static 30ExtensionLocalizationPeer* 31ExtensionLocalizationPeer::CreateExtensionLocalizationPeer( 32 content::RequestPeer* peer, 33 IPC::Sender* message_sender, 34 const std::string& mime_type, 35 const GURL& request_url) { 36 // Return NULL if content is not text/css or it doesn't belong to extension 37 // scheme. 38 return (request_url.SchemeIs(extensions::kExtensionScheme) && 39 StartsWithASCII(mime_type, "text/css", false)) ? 40 new ExtensionLocalizationPeer(peer, message_sender, request_url) : NULL; 41} 42 43void ExtensionLocalizationPeer::OnUploadProgress( 44 uint64 position, uint64 size) { 45 NOTREACHED(); 46} 47 48bool ExtensionLocalizationPeer::OnReceivedRedirect( 49 const net::RedirectInfo& redirect_info, 50 const content::ResourceResponseInfo& info) { 51 NOTREACHED(); 52 return false; 53} 54 55void ExtensionLocalizationPeer::OnReceivedResponse( 56 const content::ResourceResponseInfo& info) { 57 response_info_ = info; 58} 59 60void ExtensionLocalizationPeer::OnReceivedData(const char* data, 61 int data_length, 62 int encoded_data_length) { 63 data_.append(data, data_length); 64} 65 66void ExtensionLocalizationPeer::OnCompletedRequest( 67 int error_code, 68 bool was_ignored_by_handler, 69 bool stale_copy_in_cache, 70 const std::string& security_info, 71 const base::TimeTicks& completion_time, 72 int64 total_transfer_size) { 73 // Make sure we delete ourselves at the end of this call. 74 scoped_ptr<ExtensionLocalizationPeer> this_deleter(this); 75 76 // Give sub-classes a chance at altering the data. 77 if (error_code != net::OK) { 78 // We failed to load the resource. 79 original_peer_->OnReceivedResponse(response_info_); 80 original_peer_->OnCompletedRequest(net::ERR_ABORTED, false, 81 stale_copy_in_cache, security_info, 82 completion_time, 83 total_transfer_size); 84 return; 85 } 86 87 ReplaceMessages(); 88 89 original_peer_->OnReceivedResponse(response_info_); 90 if (!data_.empty()) 91 original_peer_->OnReceivedData(data_.data(), 92 static_cast<int>(data_.size()), 93 -1); 94 original_peer_->OnCompletedRequest(error_code, was_ignored_by_handler, 95 stale_copy_in_cache, 96 security_info, completion_time, 97 total_transfer_size); 98} 99 100void ExtensionLocalizationPeer::ReplaceMessages() { 101 if (!message_sender_ || data_.empty()) 102 return; 103 104 if (!request_url_.is_valid()) 105 return; 106 107 std::string extension_id = request_url_.host(); 108 extensions::L10nMessagesMap* l10n_messages = 109 extensions::GetL10nMessagesMap(extension_id); 110 if (!l10n_messages) { 111 extensions::L10nMessagesMap messages; 112 message_sender_->Send(new ExtensionHostMsg_GetMessageBundle( 113 extension_id, &messages)); 114 115 // Save messages we got, so we don't have to ask again. 116 // Messages map is never empty, it contains at least @@extension_id value. 117 extensions::ExtensionToL10nMessagesMap& l10n_messages_map = 118 *extensions::GetExtensionToL10nMessagesMap(); 119 l10n_messages_map[extension_id] = messages; 120 121 l10n_messages = extensions::GetL10nMessagesMap(extension_id); 122 } 123 124 std::string error; 125 if (extensions::MessageBundle::ReplaceMessagesWithExternalDictionary( 126 *l10n_messages, &data_, &error)) { 127 data_.resize(data_.size()); 128 } 129} 130