1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
// Copyright (c) 2010 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.
#include "chrome/browser/extensions/extension_protocols.h"
#include <algorithm>
#include "app/resource_bundle.h"
#include "base/file_path.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/path_service.h"
#include "base/string_util.h"
#include "build/build_config.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
#include "chrome/browser/renderer_host/resource_dispatcher_host_request_info.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_file_util.h"
#include "chrome/common/extensions/extension_resource.h"
#include "chrome/common/url_constants.h"
#include "googleurl/src/url_util.h"
#include "grit/bookmark_manager_resources_map.h"
#include "net/base/mime_util.h"
#include "net/base/net_errors.h"
#include "net/url_request/url_request_error_job.h"
#include "net/url_request/url_request_file_job.h"
#include "net/url_request/url_request_simple_job.h"
namespace {
class URLRequestResourceBundleJob : public URLRequestSimpleJob {
public:
explicit URLRequestResourceBundleJob(URLRequest* request,
const FilePath& filename, int resource_id)
: URLRequestSimpleJob(request),
filename_(filename),
resource_id_(resource_id) { }
// URLRequestSimpleJob method.
virtual bool GetData(std::string* mime_type,
std::string* charset,
std::string* data) const {
const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
*data = rb.GetRawDataResource(resource_id_).as_string();
bool result = net::GetMimeTypeFromFile(filename_, mime_type);
if (StartsWithASCII(*mime_type, "text/", false)) {
// All of our HTML files should be UTF-8 and for other resource types
// (like images), charset doesn't matter.
DCHECK(IsStringUTF8(*data));
*charset = "utf-8";
}
return result;
}
private:
virtual ~URLRequestResourceBundleJob() { }
// We need the filename of the resource to determine the mime type.
FilePath filename_;
// The resource bundle id to load.
int resource_id_;
};
} // namespace
// Factory registered with URLRequest to create URLRequestJobs for extension://
// URLs.
static URLRequestJob* CreateExtensionURLRequestJob(URLRequest* request,
const std::string& scheme) {
ChromeURLRequestContext* context =
static_cast<ChromeURLRequestContext*>(request->context());
const ResourceDispatcherHostRequestInfo* info =
ResourceDispatcherHost::InfoForRequest(request);
// Extension resources should only be loadable from web pages which the
// extension has host permissions to (and therefore could be running script
// in, which might need access to the extension resources).
//
// chrome:// pages are exempt. We allow them to load any extension resource.
// This is used for, eg, the app launcher in the NTP.
//
// chrome-extension:// pages are also exempt, mostly for legacy reasons. Some
// extensions did this to integrate with each other before we added this code.
GURL origin_url(info->frame_origin());
if (!origin_url.is_empty() &&
!origin_url.SchemeIs(chrome::kChromeUIScheme) &&
!origin_url.SchemeIs(chrome::kExtensionScheme)) {
ExtensionExtent host_permissions =
context->GetEffectiveHostPermissionsForExtension(
request->url().host());
if (!host_permissions.ContainsURL(GURL(info->frame_origin())))
return new URLRequestErrorJob(request, net::ERR_ADDRESS_UNREACHABLE);
}
// Don't allow toplevel navigations to extension resources in incognito mode.
// This is because an extension must run in a single process, and an
// incognito tab prevents that.
// TODO(mpcomplete): better error code.
if (context->is_off_the_record() &&
info && info->resource_type() == ResourceType::MAIN_FRAME)
return new URLRequestErrorJob(request, net::ERR_ADDRESS_UNREACHABLE);
// chrome-extension://extension-id/resource/path.js
const std::string& extension_id = request->url().host();
FilePath directory_path = context->GetPathForExtension(extension_id);
if (directory_path.value().empty()) {
LOG(WARNING) << "Failed to GetPathForExtension: " << extension_id;
return NULL;
}
FilePath resources_path;
if (PathService::Get(chrome::DIR_RESOURCES, &resources_path) &&
directory_path.DirName() == resources_path) {
FilePath relative_path = directory_path.BaseName().Append(
extension_file_util::ExtensionURLToRelativeFilePath(request->url()));
#if defined(OS_WIN)
relative_path = relative_path.NormalizeWindowsPathSeparators();
#endif
// TODO(tc): Make a map of FilePath -> resource ids so we don't have to
// covert to FilePaths all the time. This will be more useful as we add
// more resources.
for (size_t i = 0; i < kBookmarkManagerResourcesSize; ++i) {
FilePath bm_resource_path =
FilePath().AppendASCII(kBookmarkManagerResources[i].name);
#if defined(OS_WIN)
bm_resource_path = bm_resource_path.NormalizeWindowsPathSeparators();
#endif
if (relative_path == bm_resource_path) {
return new URLRequestResourceBundleJob(request, relative_path,
kBookmarkManagerResources[i].value);
}
}
}
// TODO(tc): Move all of these files into resources.pak so we don't break
// when updating on Linux.
ExtensionResource resource(extension_id, directory_path,
extension_file_util::ExtensionURLToRelativeFilePath(request->url()));
return new URLRequestFileJob(request,
resource.GetFilePathOnAnyThreadHack());
}
// Factory registered with URLRequest to create URLRequestJobs for
// chrome-user-script:/ URLs.
static URLRequestJob* CreateUserScriptURLRequestJob(URLRequest* request,
const std::string& scheme) {
ChromeURLRequestContext* context =
static_cast<ChromeURLRequestContext*>(request->context());
// chrome-user-script:/user-script-name.user.js
FilePath directory_path = context->user_script_dir_path();
ExtensionResource resource(request->url().host(), directory_path,
extension_file_util::ExtensionURLToRelativeFilePath(request->url()));
return new URLRequestFileJob(request, resource.GetFilePath());
}
void RegisterExtensionProtocols() {
URLRequest::RegisterProtocolFactory(chrome::kExtensionScheme,
&CreateExtensionURLRequestJob);
URLRequest::RegisterProtocolFactory(chrome::kUserScriptScheme,
&CreateUserScriptURLRequestJob);
}
|
