1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel (at) 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.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 42 static int debug_callback(CURL *curl, curl_infotype info, char *msg, 43 size_t len, void *ptr) 44 { 45 (void)curl; 46 (void)ptr; 47 48 if(info == CURLINFO_TEXT) 49 fprintf(stderr, "debug: %.*s", (int) len, msg); 50 51 return 0; 52 } 53 54 static int do_one_request(CURLM *m, char *URL, char *resolve) 55 { 56 CURL *curls; 57 struct curl_slist *resolve_list = NULL; 58 int still_running; 59 int res = 0; 60 CURLMsg *msg; 61 int msgs_left; 62 63 resolve_list = curl_slist_append(resolve_list, resolve); 64 65 easy_init(curls); 66 67 easy_setopt(curls, CURLOPT_URL, URL); 68 easy_setopt(curls, CURLOPT_RESOLVE, resolve_list); 69 easy_setopt(curls, CURLOPT_DEBUGFUNCTION, debug_callback); 70 easy_setopt(curls, CURLOPT_VERBOSE, 1); 71 easy_setopt(curls, CURLOPT_DNS_CACHE_TIMEOUT, DNS_TIMEOUT); 72 73 multi_add_handle(m, curls); 74 multi_perform(m, &still_running); 75 76 abort_on_test_timeout(); 77 78 while(still_running) { 79 struct timeval timeout; 80 fd_set fdread, fdwrite, fdexcep; 81 int maxfd = -99; 82 83 FD_ZERO(&fdread); 84 FD_ZERO(&fdwrite); 85 FD_ZERO(&fdexcep); 86 timeout.tv_sec = 1; 87 timeout.tv_usec = 0; 88 89 multi_fdset(m, &fdread, &fdwrite, &fdexcep, &maxfd); 90 select_test(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout); 91 92 abort_on_test_timeout(); 93 multi_perform(m, &still_running); 94 95 abort_on_test_timeout(); 96 } 97 98 do { 99 msg = curl_multi_info_read(m, &msgs_left); 100 if(msg && msg->msg == CURLMSG_DONE && msg->easy_handle == curls) { 101 res = msg->data.result; 102 break; 103 } 104 } while(msg); 105 106 test_cleanup: 107 108 curl_multi_remove_handle(m, curls); 109 curl_easy_cleanup(curls); 110 curl_slist_free_all(resolve_list); 111 112 return res; 113 } 114 115 int test(char *URL) 116 { 117 CURLM *multi = NULL; 118 int res = 0; 119 char *address = libtest_arg2; 120 char *port = libtest_arg3; 121 char *path = URL; 122 char dns_entry[256]; 123 int i; 124 int count = 2; 125 126 snprintf(dns_entry, sizeof(dns_entry), "testserver.example.com:%s:%s", 127 port, address); 128 129 start_test_timing(); 130 131 global_init(CURL_GLOBAL_ALL); 132 multi_init(multi); 133 134 for(i = 1; i <= count; i++) { 135 char target_url[256]; 136 snprintf(target_url, sizeof(target_url), 137 "http://testserver.example.com:%s/%s%04d", port, path, i); 138 139 /* second request must succeed like the first one */ 140 res = do_one_request(multi, target_url, dns_entry); 141 if(res) 142 goto test_cleanup; 143 144 if(i < count) 145 sleep(DNS_TIMEOUT + 1); 146 } 147 148 test_cleanup: 149 150 curl_multi_cleanup(multi); 151 curl_global_cleanup(); 152 153 return (int) res; 154 } 155
