- add sources.
[platform/framework/web/crosswalk.git] / src / net / url_request / url_request_file_dir_job.cc
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 "net/url_request/url_request_file_dir_job.h"
6
7 #include "base/bind.h"
8 #include "base/compiler_specific.h"
9 #include "base/message_loop/message_loop.h"
10 #include "base/strings/sys_string_conversions.h"
11 #include "base/strings/utf_string_conversions.h"
12 #include "base/time/time.h"
13 #include "net/base/io_buffer.h"
14 #include "net/base/net_errors.h"
15 #include "net/base/net_util.h"
16 #include "net/url_request/url_request_status.h"
17 #include "url/gurl.h"
18
19 #if defined(OS_POSIX)
20 #include <sys/stat.h>
21 #endif
22
23 namespace net {
24
25 URLRequestFileDirJob::URLRequestFileDirJob(URLRequest* request,
26                                            NetworkDelegate* network_delegate,
27                                            const base::FilePath& dir_path)
28     : URLRequestJob(request, network_delegate),
29       lister_(dir_path, this),
30       dir_path_(dir_path),
31       canceled_(false),
32       list_complete_(false),
33       wrote_header_(false),
34       read_pending_(false),
35       read_buffer_length_(0),
36       weak_factory_(this) {
37 }
38
39 void URLRequestFileDirJob::StartAsync() {
40   lister_.Start();
41
42   NotifyHeadersComplete();
43 }
44
45 void URLRequestFileDirJob::Start() {
46   // Start reading asynchronously so that all error reporting and data
47   // callbacks happen as they would for network requests.
48   base::MessageLoop::current()->PostTask(
49       FROM_HERE,
50       base::Bind(&URLRequestFileDirJob::StartAsync,
51                  weak_factory_.GetWeakPtr()));
52 }
53
54 void URLRequestFileDirJob::Kill() {
55   if (canceled_)
56     return;
57
58   canceled_ = true;
59
60   if (!list_complete_)
61     lister_.Cancel();
62
63   URLRequestJob::Kill();
64
65   weak_factory_.InvalidateWeakPtrs();
66 }
67
68 bool URLRequestFileDirJob::ReadRawData(IOBuffer* buf, int buf_size,
69                                        int* bytes_read) {
70   DCHECK(bytes_read);
71   *bytes_read = 0;
72
73   if (is_done())
74     return true;
75
76   if (FillReadBuffer(buf->data(), buf_size, bytes_read))
77     return true;
78
79   // We are waiting for more data
80   read_pending_ = true;
81   read_buffer_ = buf;
82   read_buffer_length_ = buf_size;
83   SetStatus(URLRequestStatus(URLRequestStatus::IO_PENDING, 0));
84   return false;
85 }
86
87 bool URLRequestFileDirJob::GetMimeType(std::string* mime_type) const {
88   *mime_type = "text/html";
89   return true;
90 }
91
92 bool URLRequestFileDirJob::GetCharset(std::string* charset) {
93   // All the filenames are converted to UTF-8 before being added.
94   *charset = "utf-8";
95   return true;
96 }
97
98 void URLRequestFileDirJob::OnListFile(
99     const DirectoryLister::DirectoryListerData& data) {
100   // We wait to write out the header until we get the first file, so that we
101   // can catch errors from DirectoryLister and show an error page.
102   if (!wrote_header_) {
103 #if defined(OS_WIN)
104     const base::string16& title = dir_path_.value();
105 #elif defined(OS_POSIX)
106     // TODO(jungshik): Add SysNativeMBToUTF16 to sys_string_conversions.
107     // On Mac, need to add NFKC->NFC conversion either here or in file_path.
108     // On Linux, the file system encoding is not defined, but we assume that
109     // SysNativeMBToWide takes care of it at least for now. We can try something
110     // more sophisticated if necessary later.
111     const base::string16& title = WideToUTF16(
112         base::SysNativeMBToWide(dir_path_.value()));
113 #endif
114     data_.append(GetDirectoryListingHeader(title));
115     wrote_header_ = true;
116   }
117
118 #if defined(OS_WIN)
119   std::string raw_bytes;  // Empty on Windows means UTF-8 encoded name.
120 #elif defined(OS_POSIX)
121   // TOOD(jungshik): The same issue as for the directory name.
122   base::FilePath filename = data.info.GetName();
123   const std::string& raw_bytes = filename.value();
124 #endif
125   data_.append(GetDirectoryListingEntry(
126       data.info.GetName().LossyDisplayName(),
127       raw_bytes,
128       data.info.IsDirectory(),
129       data.info.GetSize(),
130       data.info.GetLastModifiedTime()));
131
132   // TODO(darin): coalesce more?
133   CompleteRead();
134 }
135
136 void URLRequestFileDirJob::OnListDone(int error) {
137   DCHECK(!canceled_);
138   if (error != OK) {
139     read_pending_ = false;
140     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, error));
141   } else {
142     list_complete_ = true;
143     CompleteRead();
144   }
145 }
146
147 URLRequestFileDirJob::~URLRequestFileDirJob() {}
148
149 void URLRequestFileDirJob::CompleteRead() {
150   if (read_pending_) {
151     int bytes_read;
152     if (FillReadBuffer(read_buffer_->data(), read_buffer_length_,
153                        &bytes_read)) {
154       // We completed the read, so reset the read buffer.
155       read_pending_ = false;
156       read_buffer_ = NULL;
157       read_buffer_length_ = 0;
158
159       SetStatus(URLRequestStatus());
160       NotifyReadComplete(bytes_read);
161     } else {
162       NOTREACHED();
163       // TODO: Better error code.
164       NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, 0));
165     }
166   }
167 }
168
169 bool URLRequestFileDirJob::FillReadBuffer(char* buf, int buf_size,
170                                           int* bytes_read) {
171   DCHECK(bytes_read);
172
173   *bytes_read = 0;
174
175   int count = std::min(buf_size, static_cast<int>(data_.size()));
176   if (count) {
177     memcpy(buf, &data_[0], count);
178     data_.erase(0, count);
179     *bytes_read = count;
180     return true;
181   } else if (list_complete_) {
182     // EOF
183     return true;
184   }
185   return false;
186 }
187
188 }  // namespace net