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 (c) 2006-2009 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.
//
// A delegate class of WebURLLoaderImpl that handles multipart/x-mixed-replace
// data. We special case multipart/x-mixed-replace because WebCore expects a
// separate didReceiveResponse for each new message part.
//
// Most of the logic and edge case handling are based on the Mozilla's
// implementation in netwerk/streamconv/converters/nsMultiMixedConv.cpp.
// This seems like a derivative work, so here's the original license:
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef WEBKIT_GLUE_MULTIPART_RESPONSE_DELEGATE_H_
#define WEBKIT_GLUE_MULTIPART_RESPONSE_DELEGATE_H_
#include <string>
#include "base/basictypes.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebURLResponse.h"
namespace WebKit {
class WebURLLoader;
class WebURLLoaderClient;
}
namespace webkit_glue {
// Used by unit tests to access private members.
class MultipartResponseDelegateTester;
class MultipartResponseDelegate {
public:
MultipartResponseDelegate(WebKit::WebURLLoaderClient* client,
WebKit::WebURLLoader* loader,
const WebKit::WebURLResponse& response,
const std::string& boundary);
// Passed through from ResourceHandleInternal
void OnReceivedData(const char* data, int data_len);
void OnCompletedRequest();
// The request has been canceled, so stop making calls to the client.
void Cancel() {
client_ = NULL;
loader_ = NULL;
}
// Returns the multi part boundary string from the Content-type header
// in the response.
// Returns true on success.
static bool ReadMultipartBoundary(const WebKit::WebURLResponse& response,
std::string* multipart_boundary);
// Returns the lower and higher content ranges from an individual multipart
// in a multipart response.
// Returns true on success.
static bool ReadContentRanges(const WebKit::WebURLResponse& response,
int* content_range_lower_bound,
int* content_range_upper_bound,
int* content_range_instance_size);
private:
friend class MultipartResponseDelegateTester; // For unittests.
// Pointers to the client and associated loader so we can make callbacks as
// we parse pieces of data.
WebKit::WebURLLoaderClient* client_;
WebKit::WebURLLoader* loader_;
// The original resource response for this request. We use this as a
// starting point for each parts response.
WebKit::WebURLResponse original_response_;
// Checks to see if data[pos] character is a line break; handles crlf, lflf,
// lf, or cr. Returns the number of characters to skip over (0, 1 or 2).
int PushOverLine(const std::string& data, size_t pos);
// Tries to parse http headers from the start of data_. Returns true if it
// succeeds and sends a didReceiveResponse to m_client. Returns false if
// the header is incomplete (in which case we just wait for more data).
bool ParseHeaders();
// Find the next boundary in data_. Returns std::string::npos if there's no
// full token.
size_t FindBoundary();
// A temporary buffer to hold data between reads for multipart data that
// gets split in the middle of a header.
std::string data_;
// Multipart boundary token
std::string boundary_;
// true until we get our first on received data call
bool first_received_data_;
// true if we're truncated in the middle of a header
bool processing_headers_;
// true when we're done sending information. At that point, we stop
// processing AddData requests.
bool stop_sending_;
// true after we've sent our first response to the WebURLLoaderClient.
bool has_sent_first_response_;
DISALLOW_COPY_AND_ASSIGN(MultipartResponseDelegate);
};
} // namespace webkit_glue
#endif
|
