1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2014, 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 http://curl.haxx.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 ***************************************************************************/
22
23 /*
24 * Check for bugs #1303 and #1327: libcurl should never remove DNS entries
25 * created via CURLOPT_RESOLVE, neither after DNS_CACHE_TIMEOUT elapses
26 * (test1515) nor a dead connection is detected (test1616).
27 */
28
29 #include "test.h"
30 #include "testutil.h"
31 #include "warnless.h"
32 #include "memdebug.h"
33
34 #define TEST_HANG_TIMEOUT 60 * 1000
35
36 #define DNS_TIMEOUT 1
37
38 #if defined(WIN32) || defined(_WIN32)
39 #define sleep(s) Sleep(s * 1000)
40 #endif
41
debug_callback(CURL * curl,curl_infotype info,char * msg,size_t len,void * ptr)42 static int debug_callback(CURL *curl, curl_infotype info, char *msg, size_t len, void *ptr)
43 {
44 (void)curl;
45 (void)ptr;
46
47 if(info == CURLINFO_TEXT)
48 fprintf(stderr, "debug: %.*s", (int) len, msg);
49
50 return 0;
51 }
52
do_one_request(CURLM * m,char * URL,char * resolve)53 static int do_one_request(CURLM *m, char *URL, char *resolve)
54 {
55 CURL *curls;
56 struct curl_slist *resolve_list = NULL;
57 int still_running;
58 int res = 0;
59 CURLMsg *msg;
60 int msgs_left;
61
62 resolve_list = curl_slist_append(resolve_list, resolve);
63
64 easy_init(curls);
65
66 easy_setopt(curls, CURLOPT_URL, URL);
67 easy_setopt(curls, CURLOPT_RESOLVE, resolve_list);
68 easy_setopt(curls, CURLOPT_DEBUGFUNCTION, debug_callback);
69 easy_setopt(curls, CURLOPT_VERBOSE, 1);
70 easy_setopt(curls, CURLOPT_DNS_CACHE_TIMEOUT, DNS_TIMEOUT);
71
72 multi_add_handle(m, curls);
73 multi_perform(m, &still_running);
74
75 abort_on_test_timeout();
76
77 while(still_running) {
78 struct timeval timeout;
79 fd_set fdread, fdwrite, fdexcep;
80 int maxfd = -99;
81
82 FD_ZERO(&fdread);
83 FD_ZERO(&fdwrite);
84 FD_ZERO(&fdexcep);
85 timeout.tv_sec = 1;
86 timeout.tv_usec = 0;
87
88 multi_fdset(m, &fdread, &fdwrite, &fdexcep, &maxfd);
89 select_test(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
90
91 abort_on_test_timeout();
92 multi_perform(m, &still_running);
93
94 abort_on_test_timeout();
95 }
96
97 while((msg = curl_multi_info_read(m, &msgs_left))) {
98 if(msg->msg == CURLMSG_DONE && msg->easy_handle == curls) {
99 res = msg->data.result;
100 break;
101 }
102 }
103
104 test_cleanup:
105
106 curl_multi_remove_handle(m, curls);
107 curl_easy_cleanup(curls);
108 curl_slist_free_all(resolve_list);
109
110 return res;
111 }
112
test(char * URL)113 int test(char *URL)
114 {
115 CURLM* multi = NULL;
116 int res = 0;
117 char *address = libtest_arg2;
118 char *port = libtest_arg3;
119 char *path = URL;
120 char dns_entry[256];
121 int i;
122 int count = 2;
123
124 snprintf(dns_entry, sizeof(dns_entry), "testserver.example.com:%s:%s", port, address);
125
126 start_test_timing();
127
128 global_init(CURL_GLOBAL_ALL);
129 multi_init(multi);
130
131 for(i = 1; i <= count; i++) {
132 char target_url[256];
133 snprintf(target_url, sizeof(target_url), "http://testserver.example.com:%s%s%04d", port, path, i);
134
135 /* second request must succeed like the first one */
136 if((res = do_one_request(multi, target_url, dns_entry)))
137 goto test_cleanup;
138
139 if(i < count)
140 sleep(DNS_TIMEOUT + 1);
141 }
142
143 test_cleanup:
144
145 curl_multi_cleanup(multi);
146
147 return (int) res;
148 }
149