xref: /curl/docs/examples/cookie_interface.c (revision 53b4dfe4)
1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9  *
10  * This software is licensed as described in the file COPYING, which
11  * you should have received as part of this distribution. The terms
12  * are also available at https://curl.se/docs/copyright.html.
13  *
14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15  * copies of the Software, and permit persons to whom the Software is
16  * furnished to do so, under the terms of the COPYING file.
17  *
18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19  * KIND, either express or implied.
20  *
21  * SPDX-License-Identifier: curl
22  *
23  ***************************************************************************/
24 /* <DESC>
25  * Import and export cookies with COOKIELIST.
26  * </DESC>
27  */
28 
29 #include <stdio.h>
30 #include <string.h>
31 #include <stdlib.h>
32 #include <time.h>
33 
34 #include <curl/curl.h>
35 
36 static void
print_cookies(CURL * curl)37 print_cookies(CURL *curl)
38 {
39   CURLcode res;
40   struct curl_slist *cookies;
41   struct curl_slist *nc;
42   int i;
43 
44   printf("Cookies, curl knows:\n");
45   res = curl_easy_getinfo(curl, CURLINFO_COOKIELIST, &cookies);
46   if(res != CURLE_OK) {
47     fprintf(stderr, "Curl curl_easy_getinfo failed: %s\n",
48             curl_easy_strerror(res));
49     exit(1);
50   }
51   nc = cookies;
52   i = 1;
53   while(nc) {
54     printf("[%d]: %s\n", i, nc->data);
55     nc = nc->next;
56     i++;
57   }
58   if(i == 1) {
59     printf("(none)\n");
60   }
61   curl_slist_free_all(cookies);
62 }
63 
64 int
main(void)65 main(void)
66 {
67   CURL *curl;
68   CURLcode res;
69 
70   curl_global_init(CURL_GLOBAL_ALL);
71   curl = curl_easy_init();
72   if(curl) {
73     char nline[512];
74 
75     curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
76     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
77     curl_easy_setopt(curl, CURLOPT_COOKIEFILE, ""); /* start cookie engine */
78     res = curl_easy_perform(curl);
79     if(res != CURLE_OK) {
80       fprintf(stderr, "Curl perform failed: %s\n", curl_easy_strerror(res));
81       return 1;
82     }
83 
84     print_cookies(curl);
85 
86     printf("Erasing curl's knowledge of cookies!\n");
87     curl_easy_setopt(curl, CURLOPT_COOKIELIST, "ALL");
88 
89     print_cookies(curl);
90 
91     printf("-----------------------------------------------\n"
92            "Setting a cookie \"PREF\" via cookie interface:\n");
93 #ifdef _WIN32
94 #define snprintf _snprintf
95 #endif
96     /* Netscape format cookie */
97     snprintf(nline, sizeof(nline), "%s\t%s\t%s\t%s\t%.0f\t%s\t%s",
98              ".example.com", "TRUE", "/", "FALSE",
99              difftime(time(NULL) + 31337, (time_t)0),
100              "PREF", "hello example, i like you!");
101     res = curl_easy_setopt(curl, CURLOPT_COOKIELIST, nline);
102     if(res != CURLE_OK) {
103       fprintf(stderr, "Curl curl_easy_setopt failed: %s\n",
104               curl_easy_strerror(res));
105       return 1;
106     }
107 
108     /* HTTP-header style cookie. If you use the Set-Cookie format and do not
109        specify a domain then the cookie is sent for any domain and is not
110        modified, likely not what you intended. For more information refer to
111        the CURLOPT_COOKIELIST documentation.
112     */
113     snprintf(nline, sizeof(nline),
114       "Set-Cookie: OLD_PREF=3d141414bf4209321; "
115       "expires=Sun, 17-Jan-2038 19:14:07 GMT; path=/; domain=.example.com");
116     res = curl_easy_setopt(curl, CURLOPT_COOKIELIST, nline);
117     if(res != CURLE_OK) {
118       fprintf(stderr, "Curl curl_easy_setopt failed: %s\n",
119               curl_easy_strerror(res));
120       return 1;
121     }
122 
123     print_cookies(curl);
124 
125     res = curl_easy_perform(curl);
126     if(res != CURLE_OK) {
127       fprintf(stderr, "Curl perform failed: %s\n", curl_easy_strerror(res));
128       return 1;
129     }
130 
131     curl_easy_cleanup(curl);
132   }
133   else {
134     fprintf(stderr, "Curl init failed!\n");
135     return 1;
136   }
137 
138   curl_global_cleanup();
139   return 0;
140 }
141