blob: 66aae8b9a54e2acf82407bc1f6eca861b20f3f6f (
plain)
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
|
// Copyright (c) 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.
#ifndef NET_FTP_FTP_CTRL_RESPONSE_BUFFER_H_
#define NET_FTP_FTP_CTRL_RESPONSE_BUFFER_H_
#include <queue>
#include <string>
#include <vector>
#include "base/basictypes.h"
namespace net {
struct FtpCtrlResponse {
static const int kInvalidStatusCode;
FtpCtrlResponse() : status_code(kInvalidStatusCode) {}
int status_code; // Three-digit status code.
std::vector<std::string> lines; // Response lines, without CRLFs.
};
class FtpCtrlResponseBuffer {
public:
FtpCtrlResponseBuffer() {}
// Called when data is received from the control socket. Returns error code.
int ConsumeData(const char* data, int data_length);
bool ResponseAvailable() const {
return !responses_.empty();
}
// Returns the next response. It is an error to call this function
// unless ResponseAvailable returns true.
FtpCtrlResponse PopResponse() {
FtpCtrlResponse result = responses_.front();
responses_.pop();
return result;
}
private:
struct ParsedLine {
ParsedLine()
: has_status_code(false),
is_multiline(false),
is_complete(false),
status_code(FtpCtrlResponse::kInvalidStatusCode) {
}
// Indicates that this line begins with a valid 3-digit status code.
bool has_status_code;
// Indicates that this line has the dash (-) after the code, which
// means a multiline response.
bool is_multiline;
// Indicates that this line could be parsed as a complete and valid
// response line, without taking into account preceding lines (which
// may change its meaning into a continuation of the previous line).
bool is_complete;
// Part of response parsed as status code.
int status_code;
// Part of response parsed as status text.
std::string status_text;
// Text before parsing, without terminating CRLF.
std::string raw_text;
};
static ParsedLine ParseLine(const std::string& line);
void ExtractFullLinesFromBuffer();
// We keep not-yet-parsed data in a string buffer.
std::string buffer_;
std::queue<ParsedLine> lines_;
// When parsing a multiline response, we don't know beforehand if a line
// will have a continuation. So always store last line of multiline response
// so we can append the continuation to it.
std::string line_buf_;
// Keep the response data while we add all lines to it.
FtpCtrlResponse response_buf_;
// As we read full responses (possibly multiline), we add them to the queue.
std::queue<FtpCtrlResponse> responses_;
DISALLOW_COPY_AND_ASSIGN(FtpCtrlResponseBuffer);
};
} // namespace net
#endif // NET_FTP_FTP_CTRL_RESPONSE_BUFFER_H_
|
