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1 // Copyright (c) 2011 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 // Implementation of the Chrome Extensions Proxy Settings API. | |
6 | |
7 #include "chrome/browser/extensions/extension_proxy_api.h" | |
8 | |
9 #include "base/json/json_writer.h" | |
10 #include "base/stringprintf.h" | |
11 #include "base/utf_string_conversions.h" | |
12 #include "base/values.h" | |
13 #include "chrome/browser/extensions/extension_event_router_forwarder.h" | |
14 #include "chrome/browser/extensions/extension_proxy_api_constants.h" | |
15 #include "chrome/browser/extensions/extension_proxy_api_helpers.h" | |
16 #include "chrome/browser/extensions/extension_service.h" | |
17 #include "chrome/browser/prefs/proxy_config_dictionary.h" | |
18 #include "net/base/net_errors.h" | |
19 | |
20 namespace helpers = extension_proxy_api_helpers; | |
21 namespace keys = extension_proxy_api_constants; | |
22 | |
23 // static | |
24 ExtensionProxyEventRouter* ExtensionProxyEventRouter::GetInstance() { | |
25 return Singleton<ExtensionProxyEventRouter>::get(); | |
26 } | |
27 | |
28 ExtensionProxyEventRouter::ExtensionProxyEventRouter() { | |
29 } | |
30 | |
31 ExtensionProxyEventRouter::~ExtensionProxyEventRouter() { | |
32 } | |
33 | |
34 void ExtensionProxyEventRouter::OnProxyError( | |
35 ExtensionEventRouterForwarder* event_router, | |
36 void* profile, | |
37 int error_code) { | |
38 ListValue args; | |
39 DictionaryValue* dict = new DictionaryValue(); | |
40 dict->SetBoolean(keys::kProxyEventFatal, true); | |
41 dict->SetString(keys::kProxyEventError, net::ErrorToString(error_code)); | |
42 dict->SetString(keys::kProxyEventDetails, ""); | |
43 args.Append(dict); | |
44 | |
45 std::string json_args; | |
46 base::JSONWriter::Write(&args, false, &json_args); | |
47 | |
48 if (profile) { | |
49 event_router->DispatchEventToRenderers( | |
50 keys::kProxyEventOnProxyError, json_args, profile, true, GURL()); | |
51 } else { | |
52 event_router->BroadcastEventToRenderers( | |
53 keys::kProxyEventOnProxyError, json_args, GURL()); | |
54 } | |
55 } | |
56 | |
57 void ExtensionProxyEventRouter::OnPACScriptError( | |
58 ExtensionEventRouterForwarder* event_router, | |
59 void* profile, | |
60 int line_number, | |
61 const string16& error) { | |
62 ListValue args; | |
63 DictionaryValue* dict = new DictionaryValue(); | |
64 dict->SetBoolean(keys::kProxyEventFatal, false); | |
65 dict->SetString(keys::kProxyEventError, | |
66 net::ErrorToString(net::ERR_PAC_SCRIPT_FAILED)); | |
67 std::string error_msg; | |
68 if (line_number != -1) { | |
69 base::SStringPrintf( | |
70 &error_msg, "line: %d: %s", line_number, UTF16ToUTF8(error).c_str()); | |
71 } else { | |
72 error_msg = UTF16ToUTF8(error); | |
73 } | |
74 dict->SetString(keys::kProxyEventDetails, error_msg); | |
75 args.Append(dict); | |
76 | |
77 std::string json_args; | |
78 base::JSONWriter::Write(&args, false, &json_args); | |
79 | |
80 if (profile) { | |
81 event_router->DispatchEventToRenderers( | |
82 keys::kProxyEventOnProxyError, json_args, profile, true, GURL()); | |
83 } else { | |
84 event_router->BroadcastEventToRenderers( | |
85 keys::kProxyEventOnProxyError, json_args, GURL()); | |
86 } | |
87 } | |
88 | |
89 ProxyPrefTransformer::ProxyPrefTransformer() { | |
90 } | |
91 | |
92 ProxyPrefTransformer::~ProxyPrefTransformer() { | |
93 } | |
94 | |
95 Value* ProxyPrefTransformer::ExtensionToBrowserPref(const Value* extension_pref, | |
96 std::string* error, | |
97 bool* bad_message) { | |
98 // When ExtensionToBrowserPref is called, the format of |extension_pref| | |
99 // has been verified already by the extension API to match the schema | |
100 // defined in the extension API JSON. | |
101 CHECK(extension_pref->IsType(Value::TYPE_DICTIONARY)); | |
102 const DictionaryValue* config = | |
103 static_cast<const DictionaryValue*>(extension_pref); | |
104 | |
105 // Extract the various pieces of information passed to | |
106 // chrome.proxy.settings.set(). Several of these strings will | |
107 // remain blank no respective values have been passed to set(). | |
108 // If a values has been passed to set but could not be parsed, we bail | |
109 // out and return NULL. | |
110 ProxyPrefs::ProxyMode mode_enum; | |
111 bool pac_mandatory; | |
112 std::string pac_url; | |
113 std::string pac_data; | |
114 std::string proxy_rules_string; | |
115 std::string bypass_list; | |
116 if (!helpers::GetProxyModeFromExtensionPref( | |
117 config, &mode_enum, error, bad_message) || | |
118 !helpers::GetPacMandatoryFromExtensionPref( | |
119 config, &pac_mandatory, error, bad_message) || | |
120 !helpers::GetPacUrlFromExtensionPref( | |
121 config, &pac_url, error, bad_message) || | |
122 !helpers::GetPacDataFromExtensionPref( | |
123 config, &pac_data, error, bad_message) || | |
124 !helpers::GetProxyRulesStringFromExtensionPref( | |
125 config, &proxy_rules_string, error, bad_message) || | |
126 !helpers::GetBypassListFromExtensionPref( | |
127 config, &bypass_list, error, bad_message)) { | |
128 return NULL; | |
129 } | |
130 | |
131 return helpers::CreateProxyConfigDict( | |
132 mode_enum, pac_mandatory, pac_url, pac_data, proxy_rules_string, | |
133 bypass_list, error); | |
134 } | |
135 | |
136 Value* ProxyPrefTransformer::BrowserToExtensionPref(const Value* browser_pref) { | |
137 CHECK(browser_pref->IsType(Value::TYPE_DICTIONARY)); | |
138 | |
139 // This is a dictionary wrapper that exposes the proxy configuration stored in | |
140 // the browser preferences. | |
141 ProxyConfigDictionary config( | |
142 static_cast<const DictionaryValue*>(browser_pref)); | |
143 | |
144 ProxyPrefs::ProxyMode mode; | |
145 if (!config.GetMode(&mode)) { | |
146 LOG(ERROR) << "Cannot determine proxy mode."; | |
147 return NULL; | |
148 } | |
149 | |
150 // Build a new ProxyConfig instance as defined in the extension API. | |
151 scoped_ptr<DictionaryValue> extension_pref(new DictionaryValue); | |
152 | |
153 extension_pref->SetString(keys::kProxyConfigMode, | |
154 ProxyPrefs::ProxyModeToString(mode)); | |
155 | |
156 switch (mode) { | |
157 case ProxyPrefs::MODE_DIRECT: | |
158 case ProxyPrefs::MODE_AUTO_DETECT: | |
159 case ProxyPrefs::MODE_SYSTEM: | |
160 // These modes have no further parameters. | |
161 break; | |
162 case ProxyPrefs::MODE_PAC_SCRIPT: { | |
163 // A PAC URL either point to a PAC script or contain a base64 encoded | |
164 // PAC script. In either case we build a PacScript dictionary as defined | |
165 // in the extension API. | |
166 DictionaryValue* pac_dict = helpers::CreatePacScriptDict(config); | |
167 if (!pac_dict) | |
168 return NULL; | |
169 extension_pref->Set(keys::kProxyConfigPacScript, pac_dict); | |
170 break; | |
171 } | |
172 case ProxyPrefs::MODE_FIXED_SERVERS: { | |
173 // Build ProxyRules dictionary according to the extension API. | |
174 DictionaryValue* proxy_rules_dict = helpers::CreateProxyRulesDict(config); | |
175 if (!proxy_rules_dict) | |
176 return NULL; | |
177 extension_pref->Set(keys::kProxyConfigRules, proxy_rules_dict); | |
178 break; | |
179 } | |
180 case ProxyPrefs::kModeCount: | |
181 NOTREACHED(); | |
182 } | |
183 return extension_pref.release(); | |
184 } | |
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