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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_simple_job.h" | |
6 | |
7 #include <vector> | |
8 | |
9 #include "base/bind.h" | |
10 #include "base/compiler_specific.h" | |
11 #include "base/memory/ref_counted_memory.h" | |
12 #include "base/message_loop/message_loop.h" | |
13 #include "base/threading/worker_pool.h" | |
14 #include "net/base/io_buffer.h" | |
15 #include "net/base/net_errors.h" | |
16 #include "net/http/http_request_headers.h" | |
17 #include "net/http/http_util.h" | |
18 #include "net/url_request/url_request_status.h" | |
19 | |
20 namespace net { | |
21 | |
22 namespace { | |
23 | |
24 void CopyData(const scoped_refptr<IOBuffer>& buf, | |
25 int buf_size, | |
26 const scoped_refptr<base::RefCountedMemory>& data, | |
27 int64 data_offset) { | |
28 memcpy(buf->data(), data->front() + data_offset, buf_size); | |
29 } | |
30 | |
31 } // namespace | |
32 | |
33 URLRequestSimpleJob::URLRequestSimpleJob(URLRequest* request, | |
34 NetworkDelegate* network_delegate) | |
35 : URLRangeRequestJob(request, network_delegate), | |
36 next_data_offset_(0), | |
37 task_runner_(base::WorkerPool::GetTaskRunner(false)), | |
38 weak_factory_(this) { | |
39 } | |
40 | |
41 void URLRequestSimpleJob::Start() { | |
42 // Start reading asynchronously so that all error reporting and data | |
43 // callbacks happen as they would for network requests. | |
44 base::MessageLoop::current()->PostTask( | |
45 FROM_HERE, | |
46 base::Bind(&URLRequestSimpleJob::StartAsync, weak_factory_.GetWeakPtr())); | |
47 } | |
48 | |
49 bool URLRequestSimpleJob::GetMimeType(std::string* mime_type) const { | |
50 *mime_type = mime_type_; | |
51 return true; | |
52 } | |
53 | |
54 bool URLRequestSimpleJob::GetCharset(std::string* charset) { | |
55 *charset = charset_; | |
56 return true; | |
57 } | |
58 | |
59 URLRequestSimpleJob::~URLRequestSimpleJob() {} | |
60 | |
61 bool URLRequestSimpleJob::ReadRawData(IOBuffer* buf, int buf_size, | |
62 int* bytes_read) { | |
63 DCHECK(bytes_read); | |
64 buf_size = static_cast<int>( | |
65 std::min(static_cast<int64>(buf_size), | |
66 byte_range_.last_byte_position() - next_data_offset_ + 1)); | |
67 DCHECK_GE(buf_size, 0); | |
68 if (buf_size == 0) { | |
69 *bytes_read = 0; | |
70 return true; | |
71 } | |
72 | |
73 // Do memory copy on a background thread. See crbug.com/422489. | |
74 GetTaskRunner()->PostTaskAndReply( | |
75 FROM_HERE, base::Bind(&CopyData, make_scoped_refptr(buf), buf_size, data_, | |
76 next_data_offset_), | |
77 base::Bind(&URLRequestSimpleJob::OnReadCompleted, | |
78 weak_factory_.GetWeakPtr(), buf_size)); | |
79 next_data_offset_ += buf_size; | |
80 SetStatus(net::URLRequestStatus(net::URLRequestStatus::IO_PENDING, 0)); | |
81 return false; | |
82 } | |
83 | |
84 void URLRequestSimpleJob::OnReadCompleted(int bytes_read) { | |
85 SetStatus(net::URLRequestStatus()); | |
86 NotifyReadComplete(bytes_read); | |
87 } | |
88 | |
89 base::TaskRunner* URLRequestSimpleJob::GetTaskRunner() const { | |
90 return task_runner_.get(); | |
91 } | |
92 | |
93 int URLRequestSimpleJob::GetData(std::string* mime_type, | |
94 std::string* charset, | |
95 std::string* data, | |
96 const CompletionCallback& callback) const { | |
97 NOTREACHED(); | |
98 return ERR_UNEXPECTED; | |
99 } | |
100 | |
101 int URLRequestSimpleJob::GetRefCountedData( | |
102 std::string* mime_type, | |
103 std::string* charset, | |
104 scoped_refptr<base::RefCountedMemory>* data, | |
105 const CompletionCallback& callback) const { | |
106 scoped_refptr<base::RefCountedString> str_data(new base::RefCountedString()); | |
107 int result = GetData(mime_type, charset, &str_data->data(), callback); | |
108 *data = str_data; | |
109 return result; | |
110 } | |
111 | |
112 void URLRequestSimpleJob::StartAsync() { | |
113 if (!request_) | |
114 return; | |
115 | |
116 if (ranges().size() > 1) { | |
117 NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, | |
118 ERR_REQUEST_RANGE_NOT_SATISFIABLE)); | |
119 return; | |
120 } | |
121 | |
122 if (!ranges().empty() && range_parse_result() == OK) | |
123 byte_range_ = ranges().front(); | |
124 | |
125 const int result = | |
126 GetRefCountedData(&mime_type_, &charset_, &data_, | |
127 base::Bind(&URLRequestSimpleJob::OnGetDataCompleted, | |
128 weak_factory_.GetWeakPtr())); | |
129 | |
130 if (result != ERR_IO_PENDING) | |
131 OnGetDataCompleted(result); | |
132 } | |
133 | |
134 void URLRequestSimpleJob::OnGetDataCompleted(int result) { | |
135 if (result == OK) { | |
136 // Notify that the headers are complete | |
137 if (!byte_range_.ComputeBounds(data_->size())) { | |
138 NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, | |
139 ERR_REQUEST_RANGE_NOT_SATISFIABLE)); | |
140 return; | |
141 } | |
142 | |
143 next_data_offset_ = byte_range_.first_byte_position(); | |
144 set_expected_content_size(byte_range_.last_byte_position() - | |
145 next_data_offset_ + 1); | |
146 NotifyHeadersComplete(); | |
147 } else { | |
148 NotifyStartError(URLRequestStatus(URLRequestStatus::FAILED, result)); | |
149 } | |
150 } | |
151 | |
152 } // namespace net | |
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