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1 // Copyright 2014 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 "components/component_updater/update_checker.h" | |
6 | |
7 #include <string> | |
8 #include <vector> | |
9 | |
10 #include "base/bind.h" | |
11 #include "base/bind_helpers.h" | |
12 #include "base/compiler_specific.h" | |
13 #include "base/location.h" | |
14 #include "base/logging.h" | |
15 #include "base/macros.h" | |
16 #include "base/memory/scoped_ptr.h" | |
17 #include "base/strings/stringprintf.h" | |
18 #include "base/threading/thread_checker.h" | |
19 #include "components/component_updater/component_updater_configurator.h" | |
20 #include "components/component_updater/component_updater_utils.h" | |
21 #include "components/component_updater/crx_update_item.h" | |
22 #include "components/component_updater/request_sender.h" | |
23 #include "net/url_request/url_fetcher.h" | |
24 #include "url/gurl.h" | |
25 | |
26 namespace component_updater { | |
27 | |
28 namespace { | |
29 | |
30 // Builds an update check request for |components|. |additional_attributes| is | |
31 // serialized as part of the <request> element of the request to customize it | |
32 // with data that is not platform or component specific. For each |item|, a | |
33 // corresponding <app> element is created and inserted as a child node of | |
34 // the <request>. | |
35 // | |
36 // An app element looks like this: | |
37 // <app appid="hnimpnehoodheedghdeeijklkeaacbdc" | |
38 // version="0.1.2.3" installsource="ondemand"> | |
39 // <updatecheck /> | |
40 // <packages> | |
41 // <package fp="abcd" /> | |
42 // </packages> | |
43 // </app> | |
44 std::string BuildUpdateCheckRequest(const Configurator& config, | |
45 const std::vector<CrxUpdateItem*>& items, | |
46 const std::string& additional_attributes) { | |
47 std::string app_elements; | |
48 for (size_t i = 0; i != items.size(); ++i) { | |
49 const CrxUpdateItem* item = items[i]; | |
50 std::string app("<app "); | |
51 base::StringAppendF(&app, | |
52 "appid=\"%s\" version=\"%s\"", | |
53 item->id.c_str(), | |
54 item->component.version.GetString().c_str()); | |
55 if (item->on_demand) | |
56 base::StringAppendF(&app, " installsource=\"ondemand\""); | |
57 base::StringAppendF(&app, ">"); | |
58 base::StringAppendF(&app, "<updatecheck />"); | |
59 if (!item->component.fingerprint.empty()) { | |
60 base::StringAppendF(&app, | |
61 "<packages>" | |
62 "<package fp=\"%s\"/>" | |
63 "</packages>", | |
64 item->component.fingerprint.c_str()); | |
65 } | |
66 base::StringAppendF(&app, "</app>"); | |
67 app_elements.append(app); | |
68 VLOG(1) << "Appending to update request: " << app; | |
69 } | |
70 | |
71 return BuildProtocolRequest(config.GetBrowserVersion().GetString(), | |
72 config.GetChannel(), | |
73 config.GetLang(), | |
74 config.GetOSLongName(), | |
75 app_elements, | |
76 additional_attributes); | |
77 } | |
78 | |
79 class UpdateCheckerImpl : public UpdateChecker { | |
80 public: | |
81 explicit UpdateCheckerImpl(const Configurator& config); | |
82 ~UpdateCheckerImpl() override; | |
83 | |
84 // Overrides for UpdateChecker. | |
85 bool CheckForUpdates( | |
86 const std::vector<CrxUpdateItem*>& items_to_check, | |
87 const std::string& additional_attributes, | |
88 const UpdateCheckCallback& update_check_callback) override; | |
89 | |
90 private: | |
91 void OnRequestSenderComplete(const net::URLFetcher* source); | |
92 | |
93 const Configurator& config_; | |
94 UpdateCheckCallback update_check_callback_; | |
95 scoped_ptr<RequestSender> request_sender_; | |
96 | |
97 base::ThreadChecker thread_checker_; | |
98 | |
99 DISALLOW_COPY_AND_ASSIGN(UpdateCheckerImpl); | |
100 }; | |
101 | |
102 UpdateCheckerImpl::UpdateCheckerImpl(const Configurator& config) | |
103 : config_(config) { | |
104 } | |
105 | |
106 UpdateCheckerImpl::~UpdateCheckerImpl() { | |
107 DCHECK(thread_checker_.CalledOnValidThread()); | |
108 } | |
109 | |
110 bool UpdateCheckerImpl::CheckForUpdates( | |
111 const std::vector<CrxUpdateItem*>& items_to_check, | |
112 const std::string& additional_attributes, | |
113 const UpdateCheckCallback& update_check_callback) { | |
114 DCHECK(thread_checker_.CalledOnValidThread()); | |
115 | |
116 if (request_sender_.get()) { | |
117 NOTREACHED(); | |
118 return false; // Another update check is in progress. | |
119 } | |
120 | |
121 update_check_callback_ = update_check_callback; | |
122 | |
123 request_sender_.reset(new RequestSender(config_)); | |
124 request_sender_->Send( | |
125 BuildUpdateCheckRequest(config_, items_to_check, additional_attributes), | |
126 config_.UpdateUrl(), | |
127 base::Bind(&UpdateCheckerImpl::OnRequestSenderComplete, | |
128 base::Unretained(this))); | |
129 return true; | |
130 } | |
131 | |
132 void UpdateCheckerImpl::OnRequestSenderComplete(const net::URLFetcher* source) { | |
133 DCHECK(thread_checker_.CalledOnValidThread()); | |
134 | |
135 const GURL original_url(source->GetOriginalURL()); | |
136 VLOG(1) << "Update check request went to: " << original_url.spec(); | |
137 | |
138 int error = 0; | |
139 std::string error_message; | |
140 UpdateResponse update_response; | |
141 | |
142 if (FetchSuccess(*source)) { | |
143 std::string xml; | |
144 source->GetResponseAsString(&xml); | |
145 if (!update_response.Parse(xml)) { | |
146 error = -1; | |
147 error_message = update_response.errors(); | |
148 VLOG(1) << "Update request failed: " << error_message; | |
149 } | |
150 } else { | |
151 error = GetFetchError(*source); | |
152 error_message.assign("network error"); | |
153 VLOG(1) << "Update request failed: network error"; | |
154 } | |
155 | |
156 request_sender_.reset(); | |
157 update_check_callback_.Run( | |
158 original_url, error, error_message, update_response.results()); | |
159 } | |
160 | |
161 } // namespace | |
162 | |
163 scoped_ptr<UpdateChecker> UpdateChecker::Create(const Configurator& config) { | |
164 return scoped_ptr<UpdateChecker>(new UpdateCheckerImpl(config)); | |
165 } | |
166 | |
167 } // namespace component_updater | |
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