Update To 11.40.268.0
[platform/framework/web/crosswalk.git] / src / url / url_canon_fileurl.cc
1 // Copyright 2013 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 // Functions for canonicalizing "file:" URLs.
6
7 #include "url/url_canon.h"
8 #include "url/url_canon_internal.h"
9 #include "url/url_file.h"
10 #include "url/url_parse_internal.h"
11
12 namespace url {
13
14 namespace {
15
16 #ifdef WIN32
17
18 // Given a pointer into the spec, this copies and canonicalizes the drive
19 // letter and colon to the output, if one is found. If there is not a drive
20 // spec, it won't do anything. The index of the next character in the input
21 // spec is returned (after the colon when a drive spec is found, the begin
22 // offset if one is not).
23 template<typename CHAR>
24 int FileDoDriveSpec(const CHAR* spec, int begin, int end,
25                     CanonOutput* output) {
26   // The path could be one of several things: /foo/bar, c:/foo/bar, /c:/foo,
27   // (with backslashes instead of slashes as well).
28   int num_slashes = CountConsecutiveSlashes(spec, begin, end);
29   int after_slashes = begin + num_slashes;
30
31   if (!DoesBeginWindowsDriveSpec(spec, after_slashes, end))
32     return begin;  // Haven't consumed any characters
33
34   // A drive spec is the start of a path, so we need to add a slash for the
35   // authority terminator (typically the third slash).
36   output->push_back('/');
37
38   // DoesBeginWindowsDriveSpec will ensure that the drive letter is valid
39   // and that it is followed by a colon/pipe.
40
41   // Normalize Windows drive letters to uppercase
42   if (spec[after_slashes] >= 'a' && spec[after_slashes] <= 'z')
43     output->push_back(static_cast<char>(spec[after_slashes] - 'a' + 'A'));
44   else
45     output->push_back(static_cast<char>(spec[after_slashes]));
46
47   // Normalize the character following it to a colon rather than pipe.
48   output->push_back(':');
49   return after_slashes + 2;
50 }
51
52 #endif  // WIN32
53
54 template<typename CHAR, typename UCHAR>
55 bool DoFileCanonicalizePath(const CHAR* spec,
56                             const Component& path,
57                             CanonOutput* output,
58                             Component* out_path) {
59   // Copies and normalizes the "c:" at the beginning, if present.
60   out_path->begin = output->length();
61   int after_drive;
62 #ifdef WIN32
63   after_drive = FileDoDriveSpec(spec, path.begin, path.end(), output);
64 #else
65   after_drive = path.begin;
66 #endif
67
68   // Copies the rest of the path, starting from the slash following the
69   // drive colon (if any, Windows only), or the first slash of the path.
70   bool success = true;
71   if (after_drive < path.end()) {
72     // Use the regular path canonicalizer to canonicalize the rest of the
73     // path. Give it a fake output component to write into. DoCanonicalizeFile
74     // will compute the full path component.
75     Component sub_path = MakeRange(after_drive, path.end());
76     Component fake_output_path;
77     success = CanonicalizePath(spec, sub_path, output, &fake_output_path);
78   } else {
79     // No input path, canonicalize to a slash.
80     output->push_back('/');
81   }
82
83   out_path->len = output->length() - out_path->begin;
84   return success;
85 }
86
87 template<typename CHAR, typename UCHAR>
88 bool DoCanonicalizeFileURL(const URLComponentSource<CHAR>& source,
89                            const Parsed& parsed,
90                            CharsetConverter* query_converter,
91                            CanonOutput* output,
92                            Parsed* new_parsed) {
93   // Things we don't set in file: URLs.
94   new_parsed->username = Component();
95   new_parsed->password = Component();
96   new_parsed->port = Component();
97
98   // Scheme (known, so we don't bother running it through the more
99   // complicated scheme canonicalizer).
100   new_parsed->scheme.begin = output->length();
101   output->Append("file://", 7);
102   new_parsed->scheme.len = 4;
103
104   // Append the host. For many file URLs, this will be empty. For UNC, this
105   // will be present.
106   // TODO(brettw) This doesn't do any checking for host name validity. We
107   // should probably handle validity checking of UNC hosts differently than
108   // for regular IP hosts.
109   bool success = CanonicalizeHost(source.host, parsed.host,
110                                   output, &new_parsed->host);
111   success &= DoFileCanonicalizePath<CHAR, UCHAR>(source.path, parsed.path,
112                                     output, &new_parsed->path);
113   CanonicalizeQuery(source.query, parsed.query, query_converter,
114                     output, &new_parsed->query);
115
116   // Ignore failure for refs since the URL can probably still be loaded.
117   CanonicalizeRef(source.ref, parsed.ref, output, &new_parsed->ref);
118
119   return success;
120 }
121
122 } // namespace
123
124 bool CanonicalizeFileURL(const char* spec,
125                          int spec_len,
126                          const Parsed& parsed,
127                          CharsetConverter* query_converter,
128                          CanonOutput* output,
129                          Parsed* new_parsed) {
130   return DoCanonicalizeFileURL<char, unsigned char>(
131       URLComponentSource<char>(spec), parsed, query_converter,
132       output, new_parsed);
133 }
134
135 bool CanonicalizeFileURL(const base::char16* spec,
136                          int spec_len,
137                          const Parsed& parsed,
138                          CharsetConverter* query_converter,
139                          CanonOutput* output,
140                          Parsed* new_parsed) {
141   return DoCanonicalizeFileURL<base::char16, base::char16>(
142       URLComponentSource<base::char16>(spec), parsed, query_converter,
143       output, new_parsed);
144 }
145
146 bool FileCanonicalizePath(const char* spec,
147                           const Component& path,
148                           CanonOutput* output,
149                           Component* out_path) {
150   return DoFileCanonicalizePath<char, unsigned char>(spec, path,
151                                                      output, out_path);
152 }
153
154 bool FileCanonicalizePath(const base::char16* spec,
155                           const Component& path,
156                           CanonOutput* output,
157                           Component* out_path) {
158   return DoFileCanonicalizePath<base::char16, base::char16>(spec, path,
159                                                             output, out_path);
160 }
161
162 bool ReplaceFileURL(const char* base,
163                     const Parsed& base_parsed,
164                     const Replacements<char>& replacements,
165                     CharsetConverter* query_converter,
166                     CanonOutput* output,
167                     Parsed* new_parsed) {
168   URLComponentSource<char> source(base);
169   Parsed parsed(base_parsed);
170   SetupOverrideComponents(base, replacements, &source, &parsed);
171   return DoCanonicalizeFileURL<char, unsigned char>(
172       source, parsed, query_converter, output, new_parsed);
173 }
174
175 bool ReplaceFileURL(const char* base,
176                     const Parsed& base_parsed,
177                     const Replacements<base::char16>& replacements,
178                     CharsetConverter* query_converter,
179                     CanonOutput* output,
180                     Parsed* new_parsed) {
181   RawCanonOutput<1024> utf8;
182   URLComponentSource<char> source(base);
183   Parsed parsed(base_parsed);
184   SetupUTF16OverrideComponents(base, replacements, &utf8, &source, &parsed);
185   return DoCanonicalizeFileURL<char, unsigned char>(
186       source, parsed, query_converter, output, new_parsed);
187 }
188
189 }  // namespace url