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103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_FTP_FTP_CTRL_RESPONSE_BUFFER_H_
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#define NET_FTP_FTP_CTRL_RESPONSE_BUFFER_H_
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#include <string>
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#include <vector>
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#include "base/containers/queue.h"
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#include "base/macros.h"
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#include "net/base/net_export.h"
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#include "net/log/net_log_with_source.h"
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namespace net {
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struct NET_EXPORT_PRIVATE FtpCtrlResponse {
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static const int kInvalidStatusCode;
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FtpCtrlResponse();
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FtpCtrlResponse(const FtpCtrlResponse& other);
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~FtpCtrlResponse();
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int status_code; // Three-digit status code.
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std::vector<std::string> lines; // Response lines, without CRLFs.
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};
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class NET_EXPORT_PRIVATE FtpCtrlResponseBuffer {
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public:
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FtpCtrlResponseBuffer(const NetLogWithSource& net_log);
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~FtpCtrlResponseBuffer();
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// Called when data is received from the control socket. Returns error code.
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int ConsumeData(const char* data, int data_length);
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bool ResponseAvailable() const {
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return !responses_.empty();
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}
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// Returns the next response. It is an error to call this function
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// unless ResponseAvailable returns true.
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FtpCtrlResponse PopResponse();
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private:
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struct ParsedLine {
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ParsedLine();
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ParsedLine(const ParsedLine& other);
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// Indicates that this line begins with a valid 3-digit status code.
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bool has_status_code;
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// Indicates that this line has the dash (-) after the code, which
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// means a multiline response.
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bool is_multiline;
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// Indicates that this line could be parsed as a complete and valid
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// response line, without taking into account preceding lines (which
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// may change its meaning into a continuation of the previous line).
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bool is_complete;
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// Part of response parsed as status code.
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int status_code;
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// Part of response parsed as status text.
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std::string status_text;
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// Text before parsing, without terminating CRLF.
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std::string raw_text;
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};
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static ParsedLine ParseLine(const std::string& line);
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void ExtractFullLinesFromBuffer();
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// We keep not-yet-parsed data in a string buffer.
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std::string buffer_;
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base::queue<ParsedLine> lines_;
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// True if we are in the middle of parsing a multi-line response.
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bool multiline_;
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// When parsing a multiline response, we don't know beforehand if a line
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// will have a continuation. So always store last line of multiline response
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// so we can append the continuation to it.
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std::string line_buf_;
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// Keep the response data while we add all lines to it.
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FtpCtrlResponse response_buf_;
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// As we read full responses (possibly multiline), we add them to the queue.
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base::queue<FtpCtrlResponse> responses_;
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NetLogWithSource net_log_;
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DISALLOW_COPY_AND_ASSIGN(FtpCtrlResponseBuffer);
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};
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} // namespace net
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#endif // NET_FTP_FTP_CTRL_RESPONSE_BUFFER_H_
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