libdap  Updated for version 3.20.0
libdap4 is an implementation of OPeNDAP's DAP protocol.
HTTPConnect.h
1 
2 // -*- mode: c++; c-basic-offset:4 -*-
3 
4 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
5 // Access Protocol.
6 
7 // Copyright (c) 2002,2003 OPeNDAP, Inc.
8 // Author: James Gallagher <jgallagher@opendap.org>
9 //
10 // This library is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU Lesser General Public
12 // License as published by the Free Software Foundation; either
13 // version 2.1 of the License, or (at your option) any later version.
14 //
15 // This library is distributed in the hope that it will be useful,
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // Lesser General Public License for more details.
19 //
20 // You should have received a copy of the GNU Lesser General Public
21 // License along with this library; if not, write to the Free Software
22 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 //
24 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
25 
26 #ifndef _httpconnect_h
27 #define _httpconnect_h
28 
29 
30 #include <string>
31 
32 #include <curl/curl.h>
33 //No longer used in CURL - pwest April 09, 2012
34 //#include <curl/types.h>
35 #include <curl/easy.h>
36 
37 #ifndef _rc_reader_h_
38 #include "RCReader.h"
39 #endif
40 
41 #ifndef _object_type_h
42 #include "ObjectType.h"
43 #endif
44 
45 #ifndef _http_cache_h
46 #include "HTTPCache.h"
47 #endif
48 
49 #ifndef http_response_h
50 #include "HTTPResponse.h"
51 #endif
52 
53 #ifndef _util_h
54 #include "util.h"
55 #endif
56 
57 using std::string;
58 using std::vector;
59 
60 namespace libdap
61 {
62 
63 extern int www_trace;
64 extern int dods_keep_temps;
65 
73 {
74 private:
75  CURL *d_curl;
76  RCReader *d_rcr;
77  HTTPCache *d_http_cache;
78 
79  char d_error_buffer[CURL_ERROR_SIZE]; // A human-readable message.
80  std::string d_content_type; // apparently read by libcurl; this is valid only after curl_easy_perform()
81 
82  bool d_accept_deflate;
83 
84  string d_username; // extracted from URL
85  string d_password; // extracted from URL
86  string d_upstring; // used to pass info into curl
87 
88  string d_cookie_jar;
89 
90  vector<string> d_request_headers; // Request headers
91 
92  int d_dap_client_protocol_major;
93  int d_dap_client_protocol_minor;
94 
95  bool d_use_cpp_streams; // Build HTTPResponse objects using fstream and not FILE*
96 
97  void www_lib_init();
98  long read_url(const string &url, FILE *stream, vector<string> *resp_hdrs,
99  const vector<string> *headers = 0);
100 
101  HTTPResponse *plain_fetch_url(const string &url);
102  HTTPResponse *caching_fetch_url(const string &url);
103 
104  bool url_uses_proxy_for(const string &url);
105  bool url_uses_no_proxy_for(const string &url) throw();
106 
107  void extract_auth_info(string &url);
108 
109  friend size_t save_raw_http_header(void *ptr, size_t size, size_t nmemb,
110  void *http_connect);
111  friend class HTTPConnectTest;
112  friend class ParseHeader;
113 
114 protected:
120  HTTPConnect();
121  HTTPConnect(const HTTPConnect &);
122  HTTPConnect &operator=(const HTTPConnect &);
124 
125 public:
126  HTTPConnect(RCReader *rcr, bool use_cpp = false);
127 
128  virtual ~HTTPConnect();
129 
130  void set_credentials(const string &u, const string &p);
131  void set_accept_deflate(bool defalte);
132  void set_xdap_protocol(int major, int minor);
133 
134  bool use_cpp_streams() const { return d_use_cpp_streams; }
135  void set_use_cpp_streams(bool use_cpp_streams) { d_use_cpp_streams = use_cpp_streams; }
136 
143  void set_cookie_jar(const string &cookie_jar) { d_cookie_jar = cookie_jar; }
144 
150  void set_cache_enabled(bool enabled) {
151  if (d_http_cache)
152  d_http_cache->set_cache_enabled(enabled);
153  }
154 
156  bool is_cache_enabled() { return (d_http_cache) ? d_http_cache->is_cache_enabled() : false; }
157 
158  HTTPResponse *fetch_url(const string &url);
159 };
160 
161 } // namespace libdap
162 
163 #endif // _httpconnect_h
void set_cache_enabled(bool mode)
Definition: HTTPCache.cc:635
void set_credentials(const string &u, const string &p)
void set_cookie_jar(const string &cookie_jar)
Definition: HTTPConnect.h:143
void set_cache_enabled(bool enabled)
Definition: HTTPConnect.h:150
HTTPResponse * fetch_url(const string &url)
Definition: HTTPConnect.cc:617
top level DAP object to house generic methods
Definition: AlarmHandler.h:35
void set_accept_deflate(bool defalte)
Definition: HTTPConnect.cc:998
bool is_cache_enabled() const
Definition: HTTPCache.cc:647
void set_xdap_protocol(int major, int minor)