libdap++ Updated for version 3.8.2

HTTPConnect.h

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00001 
00002 // -*- mode: c++; c-basic-offset:4 -*-
00003 
00004 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
00005 // Access Protocol.
00006 
00007 // Copyright (c) 2002,2003 OPeNDAP, Inc.
00008 // Author: James Gallagher <jgallagher@opendap.org>
00009 //
00010 // This library is free software; you can redistribute it and/or
00011 // modify it under the terms of the GNU Lesser General Public
00012 // License as published by the Free Software Foundation; either
00013 // version 2.1 of the License, or (at your option) any later version.
00014 //
00015 // This library is distributed in the hope that it will be useful,
00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 //
00024 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
00025 
00026 #ifndef _httpconnect_h
00027 #define _httpconnect_h
00028 
00029 
00030 #include <string>
00031 
00032 #include <curl/curl.h>
00033 #include <curl/types.h>
00034 #include <curl/easy.h>
00035 
00036 #ifndef _rc_reader_h_
00037 #include "RCReader.h"
00038 #endif
00039 
00040 #ifndef _object_type_h
00041 #include "ObjectType.h"
00042 #endif
00043 
00044 #ifndef _http_cache_h
00045 #include "HTTPCache.h"
00046 #endif
00047 
00048 #ifndef http_response_h
00049 #include "HTTPResponse.h"
00050 #endif
00051 
00052 #ifndef _util_h
00053 #include "util.h"
00054 #endif
00055 
00056 using std::string;
00057 using std::vector;
00058 
00059 namespace libdap
00060 {
00061 
00074 class HTTPConnect
00075 {
00076 private:
00077     CURL *d_curl;
00078     RCReader *d_rcr;
00079     HTTPCache *d_http_cache;
00080 
00081     char d_error_buffer[CURL_ERROR_SIZE]; // A human-readable message.
00082 
00083     bool d_accept_deflate;
00084 
00085     string d_username;  // extracted from URL
00086     string d_password;  // extracted from URL
00087     string d_upstring;  // used to pass info into curl
00088 
00089     string d_cookie_jar;
00090 
00091     vector<string> d_request_headers; // Request headers
00092 
00093     int d_dap_client_protocol_major;
00094     int d_dap_client_protocol_minor;
00095 
00096     void www_lib_init();
00097     long read_url(const string &url, FILE *stream, vector<string> *resp_hdrs,
00098                   const vector<string> *headers = 0);
00099     // string get_temp_file(FILE *&stream) throw(InternalErr);
00100     HTTPResponse *plain_fetch_url(const string &url);
00101     HTTPResponse *caching_fetch_url(const string &url);
00102 
00103     bool url_uses_proxy_for(const string &url) throw();
00104     bool url_uses_no_proxy_for(const string &url) throw();
00105 
00106     void extract_auth_info(string &url);
00107 
00108     friend size_t save_raw_http_header(void *ptr, size_t size, size_t nmemb,
00109                                        void *http_connect);
00110     friend class HTTPConnectTest;
00111     friend class ParseHeader;
00112 
00113 protected:
00119     HTTPConnect() {
00120                 throw InternalErr(__FILE__, __LINE__, "Unimplemented method");
00121         }
00122         HTTPConnect(const HTTPConnect &) {
00123                 throw InternalErr(__FILE__, __LINE__, "Unimplemented method");
00124         }
00125         HTTPConnect &operator=(const HTTPConnect &) {
00126                 throw InternalErr(__FILE__, __LINE__, "Unimplemented assignment");
00127         }
00129 
00130 public:
00131     HTTPConnect(RCReader *rcr);
00132 
00133     virtual ~HTTPConnect();
00134 
00135     void set_credentials(const string &u, const string &p);
00136     void set_accept_deflate(bool defalte);
00137     void set_xdap_protocol(int major, int minor);
00138 
00145     void set_cookie_jar(const string &cookie_jar)
00146     {
00147         d_cookie_jar = cookie_jar;
00148     }
00149 
00155     void set_cache_enabled(bool enabled)
00156     {
00157         if (d_http_cache)
00158             d_http_cache->set_cache_enabled(enabled);
00159     }
00160 
00162     bool is_cache_enabled()
00163     {
00164         return (d_http_cache) ? d_http_cache->is_cache_enabled() : false;
00165     }
00166 
00167     HTTPResponse *fetch_url(const string &url);
00168 };
00169 
00170 ObjectType get_type(const string &value); // deprecated
00171 ObjectType get_description_type(const string &value);
00172 
00173 } // namespace libdap
00174 
00175 #endif // _httpconnect_h