OLD | NEW |
---|---|
(Empty) | |
1 // Copyright (c) 2012 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 "base/bind.h" | |
6 #include "base/dir_reader_posix.h" | |
7 #include "base/json/json_file_value_serializer.h" | |
8 #include "base/json/json_string_value_serializer.h" | |
9 #include "base/file_path.h" | |
10 #include "base/file_util.h" | |
11 #include "base/memory/scoped_handle.h" | |
12 #include "base/string_util.h" | |
13 #include "base/utf_string_conversions.h" | |
14 #include "base/values.h" | |
15 #include "base/version.h" | |
16 #include "chrome/browser/extensions/external_extension_provider_impl.h" | |
17 #include "chrome/browser/extensions/external_filesystem_extension_loader_linux.h " | |
18 #include "content/public/browser/browser_thread.h" | |
19 | |
20 | |
21 using content::BrowserThread; | |
22 | |
23 namespace { | |
24 | |
25 // The search path that contains information about external extensions. | |
26 #if defined(GOOGLE_CHROME_BUILD) | |
27 const char kFilepathPrefExtensions[] = "/usr/share/google-chrome/extensions"; | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
Take a look at src/chrome/common/chrome_paths.h .
| |
28 #else | |
29 const char kFilepathPrefExtensions[] = "/usr/share/chromium/extensions"; | |
30 #endif | |
31 | |
32 | |
33 // Caller takes ownership of the returned dictionary. | |
34 DictionaryValue* ExtractPrefs(const FilePath& path, | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
This code looks a lot like the code that reads ext
| |
35 base::ValueSerializer* serializer) { | |
36 std::string error_msg; | |
37 Value* extensions = serializer->Deserialize(NULL, &error_msg); | |
38 if (!extensions) { | |
39 LOG(WARNING) << "Unable to deserialize json data: " << error_msg | |
40 << " In file " << path.value() << " ."; | |
41 } else { | |
42 if (!extensions->IsType(Value::TYPE_DICTIONARY)) { | |
43 LOG(WARNING) << "Expected a JSON dictionary in file " | |
44 << path.value() << " ."; | |
45 } else { | |
46 return static_cast<DictionaryValue*>(extensions); | |
47 } | |
48 } | |
49 return new DictionaryValue; | |
50 } | |
51 | |
52 bool HasValidJsonExtension(const FilePath & filepath) { | |
53 return filepath.Extension() == FilePath::StringType(".json"); | |
54 } | |
55 | |
56 bool IsExcludedFromJsonPrefsCandidates(const FilePath & filepath) { | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
Why is this needed? I think you are looking in a
| |
57 return filepath.BaseName() | |
58 .value() == FilePath::StringType("external_extension.json"); | |
59 } | |
60 | |
61 DictionaryValue* ReadJsonPrefsFile(const FilePath & json_file) { | |
62 JSONFileValueSerializer serializer(json_file); | |
63 DictionaryValue* parsed_json_prefs = ExtractPrefs(json_file, &serializer); | |
64 | |
65 return parsed_json_prefs; | |
66 } | |
67 | |
68 std::set<FilePath> GetPrefsCandidatesFilesFromFolder( | |
69 const FilePath & external_extension_search_path) { | |
70 CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE)); | |
71 | |
72 std::set<FilePath> external_extension_paths; | |
73 | |
74 if (!file_util::PathExists(external_extension_search_path)) { | |
75 // Does not have to exist. | |
76 DVLOG(1) << "Extension search path not found"; | |
77 return external_extension_paths; | |
78 } | |
79 | |
80 base::DirReaderPosix | |
81 reader(external_extension_search_path.value().c_str()); | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
Chrome style is four spaces when continuing from t
| |
82 | |
83 if (!reader.IsValid()) { | |
84 LOG(ERROR) << "Can not read external extensions path '" | |
85 << external_extension_search_path.LossyDisplayName() | |
86 << "' although it appears to exist."; | |
87 return external_extension_paths; | |
88 } | |
89 | |
90 while (reader.Next()) { | |
91 const FilePath filename(reader.name()); | |
92 | |
93 DVLOG(1) << "Checking for file: " << reader.name(); | |
94 | |
95 if ( HasValidJsonExtension(filename) | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
Style: No space between "(" and "Has".
| |
96 && !IsExcludedFromJsonPrefsCandidates(filename)) { | |
97 external_extension_paths.insert(filename); | |
98 } else { | |
99 DVLOG(1) << "Not considering: " << reader.name(); | |
100 } | |
101 } | |
102 | |
103 return external_extension_paths; | |
104 } | |
105 | |
106 } // namespace | |
107 | |
108 | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
Use one blank line between functions.
| |
109 | |
110 | |
111 void ExternalFilesystemExtensionLoader::StartLoading() { | |
112 CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
113 BrowserThread::PostTask( | |
114 BrowserThread::FILE, FROM_HERE, | |
115 base::Bind(&ExternalFilesystemExtensionLoader::LoadOnFileThread, this)); | |
116 } | |
117 | |
118 | |
119 void ExternalFilesystemExtensionLoader::LoadOnFileThread() { | |
120 CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE)); | |
121 scoped_ptr<DictionaryValue> prefs(new DictionaryValue); | |
122 | |
123 const FilePath | |
124 EXTENSION_SEARCH_PATH = FilePath(kFilepathPrefExtensions); | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
4 spaces.
| |
125 | |
126 // First list the potential .json candidates (excluding some like | |
127 // reserved names like "external_extension.json" ... | |
128 std::set<FilePath> | |
129 candidates = GetPrefsCandidatesFilesFromFolder(EXTENSION_SEARCH_PATH); | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
4 spaces.
| |
130 | |
131 if (candidates.empty()) { | |
132 DVLOG(1) << "Extension candidates list empty"; | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
Indent is 2 spaces.
| |
133 return; | |
134 } | |
135 | |
136 // For each file read the json description & build the proper | |
137 // associated prefs | |
138 for (std::set<FilePath>::const_iterator it = candidates.begin() | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
semicolons belong on the same line as the statemen
| |
139 ; it != candidates.end() | |
140 ; ++it) { | |
141 FilePath | |
142 extension_candidate_path = EXTENSION_SEARCH_PATH.Append(*it); | |
143 | |
144 FilePath::StringType | |
145 id = extension_candidate_path.RemoveExtension().BaseName().value(); | |
146 | |
147 DictionaryValue* | |
148 json_file_content = ReadJsonPrefsFile(extension_candidate_path); | |
149 | |
150 DVLOG(1) << "Reading json file: " << extension_candidate_path.value(); | |
151 | |
152 if (NULL != json_file_content) { | |
153 DVLOG(1) << "Adding extension with id: " << id; | |
154 | |
155 prefs->Set(id, json_file_content); | |
156 } | |
157 } | |
158 | |
Sam Kerner (Chrome)
2012/04/13 01:35:27
What happens if:
* The id is not valid (Extension:
| |
159 prefs_.reset(prefs.release()); | |
160 BrowserThread::PostTask( | |
161 BrowserThread::UI, FROM_HERE, | |
162 base::Bind(&ExternalFilesystemExtensionLoader::LoadFinished, this)); | |
163 } | |
164 | |
165 | |
OLD | NEW |