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 #ifndef NET_TEST_EMBEDDED_TEST_SERVER_HTTP_REQUEST_H_ 6 #define NET_TEST_EMBEDDED_TEST_SERVER_HTTP_REQUEST_H_ 7 8 #include <map> 9 #include <string> 10 11 #include "base/basictypes.h" 12 #include "base/memory/scoped_ptr.h" 13 #include "base/strings/string_piece.h" 14 15 namespace net { 16 namespace test_server { 17 18 // Methods of HTTP requests supported by the test HTTP server. 19 enum HttpMethod { 20 METHOD_UNKNOWN, 21 METHOD_GET, 22 METHOD_HEAD, 23 METHOD_POST, 24 METHOD_PUT, 25 METHOD_DELETE, 26 METHOD_PATCH, 27 }; 28 29 // Represents a HTTP request. Since it can be big, use scoped_ptr to pass it 30 // instead of copying. However, the struct is copyable so tests can save and 31 // examine a HTTP request. 32 struct HttpRequest { 33 HttpRequest(); 34 ~HttpRequest(); 35 36 std::string relative_url; // Starts with '/'. Example: "/test?query=foo" 37 HttpMethod method; 38 std::map<std::string, std::string> headers; 39 std::string content; 40 bool has_content; 41 }; 42 43 // Parses the input data and produces a valid HttpRequest object. If there is 44 // more than one request in one chunk, then only the first one will be parsed. 45 // The common use is as below: 46 // HttpRequestParser parser; 47 // (...) 48 // void OnDataChunkReceived(Socket* socket, const char* data, int size) { 49 // parser.ProcessChunk(std::string(data, size)); 50 // if (parser.ParseRequest() == HttpRequestParser::ACCEPTED) { 51 // scoped_ptr<HttpRequest> request = parser.GetRequest(); 52 // (... process the request ...) 53 // } 54 class HttpRequestParser { 55 public: 56 // Parsing result. 57 enum ParseResult { 58 WAITING, // A request is not completed yet, waiting for more data. 59 ACCEPTED, // A request has been parsed and it is ready to be processed. 60 }; 61 62 // Parser state. 63 enum State { 64 STATE_HEADERS, // Waiting for a request headers. 65 STATE_CONTENT, // Waiting for content data. 66 STATE_ACCEPTED, // Request has been parsed. 67 }; 68 69 HttpRequestParser(); 70 ~HttpRequestParser(); 71 72 // Adds chunk of data into the internal buffer. 73 void ProcessChunk(const base::StringPiece& data); 74 75 // Parses the http request (including data - if provided). 76 // If returns ACCEPTED, then it means that the whole request has been found 77 // in the internal buffer (and parsed). After calling GetRequest(), it will be 78 // ready to parse another request. 79 ParseResult ParseRequest(); 80 81 // Retrieves parsed request. Can be only called, when the parser is in 82 // STATE_ACCEPTED state. After calling it, the parser is ready to parse 83 // another request. 84 scoped_ptr<HttpRequest> GetRequest(); 85 86 private: 87 HttpMethod GetMethodType(const std::string& token) const; 88 89 // Parses headers and returns ACCEPTED if whole request was parsed. Otherwise 90 // returns WAITING. 91 ParseResult ParseHeaders(); 92 93 // Parses request's content data and returns ACCEPTED if all of it have been 94 // processed. Chunked Transfer Encoding *is not* supported. 95 ParseResult ParseContent(); 96 97 // Fetches the next line from the buffer. Result does not contain \r\n. 98 // Returns an empty string for an empty line. It will assert if there is 99 // no line available. 100 std::string ShiftLine(); 101 102 scoped_ptr<HttpRequest> http_request_; 103 std::string buffer_; 104 size_t buffer_position_; // Current position in the internal buffer. 105 State state_; 106 // Content length of the request currently being parsed. 107 size_t declared_content_length_; 108 109 DISALLOW_COPY_AND_ASSIGN(HttpRequestParser); 110 }; 111 112 } // namespace test_server 113 } // namespace net 114 115 #endif // NET_TEST_EMBEDDED_TEST_SERVER_HTTP_REQUEST_H_ 116
