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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
// Copyright 2014 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 "content/browser/transition_request_manager.h"
#include "base/command_line.h"
#include "base/memory/singleton.h"
#include "base/metrics/field_trial.h"
#include "base/strings/string_util.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/content_switches.h"
#include "net/http/http_response_headers.h"
#include "net/http/http_util.h"
namespace {
// Enumerate all Link: headers with the specified relation in this
// response, and optionally returns the URL and any additional attributes of
// each one. See EnumerateHeaders for |iter| usage.
bool EnumerateLinkHeaders(
const scoped_refptr<net::HttpResponseHeaders>& headers,
void** iter,
const std::string& rel,
std::string* url,
std::vector<std::pair<std::string, std::string> >* attributes) {
std::string header_body;
bool rel_matched = false;
while (!rel_matched && headers->EnumerateHeader(iter, "link", &header_body)) {
const std::string::const_iterator begin = header_body.begin();
size_t url_start = header_body.find_first_of('<');
size_t url_end = header_body.find_first_of('>');
if (url_start == std::string::npos || url_end == std::string::npos ||
url_start > url_end) {
break;
}
if (attributes)
attributes->clear();
net::HttpUtil::NameValuePairsIterator param_iter(
begin + url_end + 1, header_body.end(), ';');
while (param_iter.GetNext()) {
if (LowerCaseEqualsASCII(
param_iter.name_begin(), param_iter.name_end(), "rel")) {
if (LowerCaseEqualsASCII(param_iter.value_begin(),
param_iter.value_end(),
rel.c_str())) {
if (url) {
url->assign(begin + url_start + 1, begin + url_end);
}
rel_matched = true;
} else {
break;
}
} else if (attributes) {
std::string attribute_name(param_iter.name_begin(),
param_iter.name_end());
std::string attribute_value(param_iter.value_begin(),
param_iter.value_end());
attributes->push_back(std::make_pair(attribute_name, attribute_value));
}
}
}
if (!rel_matched && attributes) {
attributes->clear();
}
return rel_matched;
}
} // namespace
namespace content {
TransitionLayerData::TransitionLayerData() {
}
TransitionLayerData::~TransitionLayerData() {
}
void TransitionRequestManager::ParseTransitionStylesheetsFromHeaders(
const scoped_refptr<net::HttpResponseHeaders>& headers,
std::vector<GURL>& entering_stylesheets,
const GURL& resolve_address) {
if (headers.get() == NULL)
return;
std::string transition_stylesheet;
std::vector<std::pair<std::string, std::string> > attributes;
void* header_iter = NULL;
while (EnumerateLinkHeaders(headers,
&header_iter,
"transition-entering-stylesheet",
&transition_stylesheet,
&attributes)) {
GURL stylesheet_url = resolve_address.Resolve(transition_stylesheet);
if (stylesheet_url.is_valid())
entering_stylesheets.push_back(stylesheet_url);
}
}
TransitionRequestManager::TransitionRequestData::TransitionRequestData() {
}
TransitionRequestManager::TransitionRequestData::~TransitionRequestData() {
}
void TransitionRequestManager::TransitionRequestData::AddEntry(
const std::string& allowed_destination_host_pattern,
const std::string& css_selector,
const std::string& markup) {
allowed_entries_.push_back(AllowedEntry(allowed_destination_host_pattern,
css_selector,
markup));
}
bool TransitionRequestManager::TransitionRequestData::FindEntry(
const GURL& request_url,
TransitionLayerData* transition_data) {
DCHECK(!allowed_entries_.empty());
CHECK(transition_data);
// TODO(oysteine): Add CSP check to validate the host pattern and the
// request_url. Must be done before this feature is moved out from the flag.
CHECK(CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableExperimentalWebPlatformFeatures) ||
base::FieldTrialList::FindFullName("NavigationTransitions") ==
"Enabled");
const AllowedEntry& allowed_entry = allowed_entries_[0];
transition_data->markup = allowed_entry.markup;
transition_data->css_selector = allowed_entry.css_selector;
return true;
}
bool TransitionRequestManager::HasPendingTransitionRequest(
int render_process_id,
int render_frame_id,
const GURL& request_url,
TransitionLayerData* transition_data) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(transition_data);
std::pair<int, int> key(render_process_id, render_frame_id);
RenderFrameRequestDataMap::iterator iter =
pending_transition_frames_.find(key);
return iter != pending_transition_frames_.end() &&
iter->second.FindEntry(request_url, transition_data);
}
void TransitionRequestManager::AddPendingTransitionRequestData(
int render_process_id,
int render_frame_id,
const std::string& allowed_destination_host_pattern,
const std::string& css_selector,
const std::string& markup) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::pair<int, int> key(render_process_id, render_frame_id);
pending_transition_frames_[key].AddEntry(allowed_destination_host_pattern,
css_selector,
markup);
}
void TransitionRequestManager::ClearPendingTransitionRequestData(
int render_process_id, int render_frame_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::pair<int, int> key(render_process_id, render_frame_id);
pending_transition_frames_.erase(key);
}
TransitionRequestManager::TransitionRequestManager() {
}
TransitionRequestManager::~TransitionRequestManager() {
}
// static
TransitionRequestManager* TransitionRequestManager::GetInstance() {
return Singleton<TransitionRequestManager>::get();
}
} // namespace content
|
