1 // Copyright 2014 The Chromium Authors 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_HTTP_HTTP_AUTH_CHALLENGE_TOKENIZER_H_ 6 #define NET_HTTP_HTTP_AUTH_CHALLENGE_TOKENIZER_H_ 7 8 #include <string> 9 10 #include "base/strings/string_piece.h" 11 #include "net/base/net_export.h" 12 #include "net/http/http_util.h" 13 14 namespace net { 15 16 // Breaks up a challenge string into the the auth scheme and parameter list, 17 // according to RFC 2617 Sec 1.2: 18 // challenge = auth-scheme 1*SP 1#auth-param 19 // 20 // Depending on the challenge scheme, it may be appropriate to interpret the 21 // parameters as either a base-64 encoded string or a comma-delimited list 22 // of name-value pairs. param_pairs() and base64_param() methods are provided 23 // to support either usage. 24 class NET_EXPORT_PRIVATE HttpAuthChallengeTokenizer { 25 public: 26 HttpAuthChallengeTokenizer(std::string::const_iterator begin, 27 std::string::const_iterator end); 28 ~HttpAuthChallengeTokenizer(); 29 30 // Get the original text. challenge_text()31 std::string challenge_text() const { 32 return std::string(begin_, end_); 33 } 34 35 // Get the authenthication scheme of the challenge. The returned scheme is 36 // always lowercase. auth_scheme()37 const std::string& auth_scheme() const { return lower_case_scheme_; } 38 params_begin()39 std::string::const_iterator params_begin() const { return params_begin_; } params_end()40 std::string::const_iterator params_end() const { return params_end_; } 41 HttpUtil::NameValuePairsIterator param_pairs() const; 42 std::string base64_param() const; 43 44 private: 45 void Init(std::string::const_iterator begin, 46 std::string::const_iterator end); 47 48 std::string::const_iterator begin_; 49 std::string::const_iterator end_; 50 51 std::string::const_iterator params_begin_; 52 std::string::const_iterator params_end_; 53 54 std::string lower_case_scheme_; 55 }; 56 57 } // namespace net 58 59 #endif // NET_HTTP_HTTP_AUTH_CHALLENGE_TOKENIZER_H_ 60