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
|
// Copyright 2013 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 "storage/common/database/database_identifier.h"
#include <stddef.h>
#include "base/macros.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "url/url_canon.h"
namespace storage {
// static
std::string GetIdentifierFromOrigin(const GURL& origin) {
return DatabaseIdentifier::CreateFromOrigin(origin).ToString();
}
// static
GURL GetOriginFromIdentifier(const std::string& identifier) {
return DatabaseIdentifier::Parse(identifier).ToOrigin();
}
static bool SchemeIsUnique(const std::string& scheme) {
return scheme == "about" || scheme == "data" || scheme == "javascript";
}
// static
const DatabaseIdentifier DatabaseIdentifier::UniqueFileIdentifier() {
return DatabaseIdentifier("", "", 0, true, true);
}
// static
DatabaseIdentifier DatabaseIdentifier::CreateFromOrigin(const GURL& origin) {
if (!origin.is_valid() || origin.is_empty() ||
!origin.IsStandard() || SchemeIsUnique(origin.scheme()))
return DatabaseIdentifier();
if (origin.SchemeIsFile())
return UniqueFileIdentifier();
int port = origin.IntPort();
if (port == url::PORT_INVALID)
return DatabaseIdentifier();
// We encode the default port for the specified scheme as 0. GURL
// canonicalizes this as an unspecified port.
if (port == url::PORT_UNSPECIFIED)
port = 0;
return DatabaseIdentifier(origin.scheme(),
origin.host(),
port,
false /* unique */,
false /* file */);
}
// static
DatabaseIdentifier DatabaseIdentifier::Parse(const std::string& identifier) {
if (!base::IsStringASCII(identifier))
return DatabaseIdentifier();
if (identifier.find("..") != std::string::npos)
return DatabaseIdentifier();
char forbidden[] = {'\\', '/', ':' ,'\0'};
if (identifier.find_first_of(forbidden, 0, arraysize(forbidden)) !=
std::string::npos) {
return DatabaseIdentifier();
}
size_t first_underscore = identifier.find_first_of('_');
if (first_underscore == std::string::npos || first_underscore == 0)
return DatabaseIdentifier();
size_t last_underscore = identifier.find_last_of('_');
if (last_underscore == std::string::npos ||
last_underscore == first_underscore ||
last_underscore == identifier.length() - 1)
return DatabaseIdentifier();
std::string scheme(identifier.data(), first_underscore);
if (scheme == "file")
return UniqueFileIdentifier();
// This magical set of schemes is always treated as unique.
if (SchemeIsUnique(scheme))
return DatabaseIdentifier();
base::StringPiece port_str(identifier.begin() + last_underscore + 1,
identifier.end());
int port = 0;
if (!base::StringToInt(port_str, &port) || port < 0 || port >= 1 << 16)
return DatabaseIdentifier();
std::string hostname(identifier.data() + first_underscore + 1,
last_underscore - first_underscore - 1);
GURL url(scheme + "://" + hostname + "/");
if (!url.IsStandard())
hostname = "";
// If a url doesn't parse cleanly or doesn't round trip, reject it.
if (!url.is_valid() || url.scheme() != scheme || url.host() != hostname)
return DatabaseIdentifier();
return DatabaseIdentifier(scheme, hostname, port, false /* unique */, false);
}
DatabaseIdentifier::DatabaseIdentifier()
: port_(0),
is_unique_(true),
is_file_(false) {
}
DatabaseIdentifier::DatabaseIdentifier(const std::string& scheme,
const std::string& hostname,
int port,
bool is_unique,
bool is_file)
: scheme_(scheme),
hostname_(base::ToLowerASCII(hostname)),
port_(port),
is_unique_(is_unique),
is_file_(is_file) {
}
DatabaseIdentifier::~DatabaseIdentifier() {}
std::string DatabaseIdentifier::ToString() const {
if (is_file_)
return "file__0";
if (is_unique_)
return "__0";
return scheme_ + "_" + hostname_ + "_" + base::IntToString(port_);
}
GURL DatabaseIdentifier::ToOrigin() const {
if (is_file_)
return GURL("file:///");
if (is_unique_)
return GURL();
if (port_ == 0)
return GURL(scheme_ + "://" + hostname_);
return GURL(scheme_ + "://" + hostname_ + ":" + base::IntToString(port_));
}
} // namespace storage
|
