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 25/* 26 * Check for bugs #1303 and #1327: libcurl should never remove DNS entries 27 * created via CURLOPT_RESOLVE, neither after DNS_CACHE_TIMEOUT elapses 28 * (test1515) nor a dead connection is detected (test1616). 29 */ 30 31#include "test.h" 32#include "testutil.h" 33#include "warnless.h" 34#include "memdebug.h" 35 36#define TEST_HANG_TIMEOUT 60 * 1000 37 38#define DNS_TIMEOUT 1 39 40static int debug_callback(CURL *curl, curl_infotype info, char *msg, 41 size_t len, void *ptr) 42{ 43 (void)curl; 44 (void)ptr; 45 46 if(info == CURLINFO_TEXT) 47 fprintf(stderr, "debug: %.*s", (int) len, msg); 48 49 return 0; 50} 51 52static int do_one_request(CURLM *m, char *URL, char *resolve) 53{ 54 CURL *curls; 55 struct curl_slist *resolve_list = NULL; 56 int still_running; 57 int res = 0; 58 CURLMsg *msg; 59 int msgs_left; 60 61 resolve_list = curl_slist_append(resolve_list, resolve); 62 63 easy_init(curls); 64 65 easy_setopt(curls, CURLOPT_URL, URL); 66 easy_setopt(curls, CURLOPT_RESOLVE, resolve_list); 67 easy_setopt(curls, CURLOPT_DEBUGFUNCTION, debug_callback); 68 easy_setopt(curls, CURLOPT_VERBOSE, 1); 69 easy_setopt(curls, CURLOPT_DNS_CACHE_TIMEOUT, DNS_TIMEOUT); 70 71 multi_add_handle(m, curls); 72 multi_perform(m, &still_running); 73 74 abort_on_test_timeout(); 75 76 while(still_running) { 77 struct timeval timeout; 78 fd_set fdread, fdwrite, fdexcep; 79 int maxfd = -99; 80 81 FD_ZERO(&fdread); 82 FD_ZERO(&fdwrite); 83 FD_ZERO(&fdexcep); 84 timeout.tv_sec = 1; 85 timeout.tv_usec = 0; 86 87 multi_fdset(m, &fdread, &fdwrite, &fdexcep, &maxfd); 88 select_test(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout); 89 90 abort_on_test_timeout(); 91 multi_perform(m, &still_running); 92 93 abort_on_test_timeout(); 94 } 95 96 do { 97 msg = curl_multi_info_read(m, &msgs_left); 98 if(msg && msg->msg == CURLMSG_DONE && msg->easy_handle == curls) { 99 res = msg->data.result; 100 break; 101 } 102 } while(msg); 103 104test_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 113int 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 msnprintf(dns_entry, sizeof(dns_entry), "testserver.example.com:%s:%s", 125 port, address); 126 127 start_test_timing(); 128 129 global_init(CURL_GLOBAL_ALL); 130 multi_init(multi); 131 132 for(i = 1; i <= count; i++) { 133 char target_url[256]; 134 msnprintf(target_url, sizeof(target_url), 135 "http://testserver.example.com:%s/%s%04d", port, path, i); 136 137 /* second request must succeed like the first one */ 138 res = do_one_request(multi, target_url, dns_entry); 139 if(res) 140 goto test_cleanup; 141 142 if(i < count) 143 sleep(DNS_TIMEOUT + 1); 144 } 145 146test_cleanup: 147 148 curl_multi_cleanup(multi); 149 curl_global_cleanup(); 150 151 return (int) res; 152} 153