392 lines
9.7 KiB
C
392 lines
9.7 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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/*
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* The purpose of this test is to make sure that if CURLMOPT_SOCKETFUNCTION or
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* CURLMOPT_TIMERFUNCTION returns error, the associated transfer should be
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* aborted correctly.
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*/
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#include "test.h"
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#include <fcntl.h>
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#include "testutil.h"
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#include "warnless.h"
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#include "memdebug.h"
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#define TEST_HANG_TIMEOUT 60 * 1000
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struct Sockets
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{
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curl_socket_t *sockets;
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int count; /* number of sockets actually stored in array */
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int max_count; /* max number of sockets that fit in allocated array */
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};
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struct ReadWriteSockets
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{
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struct Sockets read, write;
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};
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/**
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* Remove a file descriptor from a sockets array.
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*/
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static void removeFd(struct Sockets *sockets, curl_socket_t fd, int mention)
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{
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int i;
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if(mention)
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fprintf(stderr, "Remove socket fd %d\n", (int) fd);
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for(i = 0; i < sockets->count; ++i) {
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if(sockets->sockets[i] == fd) {
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if(i < sockets->count - 1)
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memmove(&sockets->sockets[i], &sockets->sockets[i + 1],
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sizeof(curl_socket_t) * (sockets->count - (i + 1)));
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--sockets->count;
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}
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}
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}
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/**
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* Add a file descriptor to a sockets array.
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* Return 0 on success, 1 on error.
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*/
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static int addFd(struct Sockets *sockets, curl_socket_t fd, const char *what)
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{
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/**
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* To ensure we only have each file descriptor once, we remove it then add
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* it again.
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*/
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fprintf(stderr, "Add socket fd %d for %s\n", (int) fd, what);
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removeFd(sockets, fd, 0);
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/*
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* Allocate array storage when required.
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*/
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if(!sockets->sockets) {
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sockets->sockets = malloc(sizeof(curl_socket_t) * 20U);
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if(!sockets->sockets)
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return 1;
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sockets->max_count = 20;
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}
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else if(sockets->count + 1 > sockets->max_count) {
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curl_socket_t *ptr = realloc(sockets->sockets, sizeof(curl_socket_t) *
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(sockets->max_count + 20));
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if(!ptr)
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/* cleanup in test_cleanup */
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return 1;
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sockets->sockets = ptr;
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sockets->max_count += 20;
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}
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/*
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* Add file descriptor to array.
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*/
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sockets->sockets[sockets->count] = fd;
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++sockets->count;
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return 0;
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}
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static int max_socket_calls;
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static int socket_calls = 0;
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/**
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* Callback invoked by curl to poll reading / writing of a socket.
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*/
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static int curlSocketCallback(CURL *easy, curl_socket_t s, int action,
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void *userp, void *socketp)
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{
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struct ReadWriteSockets *sockets = userp;
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(void)easy; /* unused */
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(void)socketp; /* unused */
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fprintf(stderr, "CURLMOPT_SOCKETFUNCTION called: %u\n", socket_calls++);
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if(socket_calls == max_socket_calls) {
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fprintf(stderr, "curlSocketCallback returns error\n");
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return -1;
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}
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if(action == CURL_POLL_IN || action == CURL_POLL_INOUT)
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if(addFd(&sockets->read, s, "read"))
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return -1; /* bail out */
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if(action == CURL_POLL_OUT || action == CURL_POLL_INOUT)
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if(addFd(&sockets->write, s, "write"))
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return -1;
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if(action == CURL_POLL_REMOVE) {
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removeFd(&sockets->read, s, 1);
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removeFd(&sockets->write, s, 0);
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}
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return 0;
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}
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static int max_timer_calls;
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static int timer_calls = 0;
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/**
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* Callback invoked by curl to set a timeout.
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*/
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static int curlTimerCallback(CURLM *multi, long timeout_ms, void *userp)
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{
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struct timeval *timeout = userp;
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(void)multi; /* unused */
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fprintf(stderr, "CURLMOPT_TIMERFUNCTION called: %u\n", timer_calls++);
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if(timer_calls == max_timer_calls) {
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fprintf(stderr, "curlTimerCallback returns error\n");
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return -1;
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}
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if(timeout_ms != -1) {
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*timeout = tutil_tvnow();
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timeout->tv_usec += (int)timeout_ms * 1000;
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}
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else {
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timeout->tv_sec = -1;
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}
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return 0;
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}
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/**
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* Check for curl completion.
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*/
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static int checkForCompletion(CURLM *curl, int *success)
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{
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int result = 0;
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*success = 0;
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while(1) {
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int numMessages;
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CURLMsg *message = curl_multi_info_read(curl, &numMessages);
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if(!message)
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break;
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if(message->msg == CURLMSG_DONE) {
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result = 1;
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if(message->data.result == CURLE_OK)
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*success = 1;
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else
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*success = 0;
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}
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else {
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fprintf(stderr, "Got an unexpected message from curl: %i\n",
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(int)message->msg);
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result = 1;
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*success = 0;
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}
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}
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return result;
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}
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static int getMicroSecondTimeout(struct timeval *timeout)
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{
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struct timeval now;
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ssize_t result;
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now = tutil_tvnow();
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result = (ssize_t)((timeout->tv_sec - now.tv_sec) * 1000000 +
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timeout->tv_usec - now.tv_usec);
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if(result < 0)
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result = 0;
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return curlx_sztosi(result);
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}
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/**
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* Update a fd_set with all of the sockets in use.
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*/
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static void updateFdSet(struct Sockets *sockets, fd_set* fdset,
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curl_socket_t *maxFd)
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{
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int i;
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for(i = 0; i < sockets->count; ++i) {
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FD_SET(sockets->sockets[i], fdset);
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if(*maxFd < sockets->sockets[i] + 1) {
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*maxFd = sockets->sockets[i] + 1;
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}
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}
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}
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static int socket_action(CURLM *curl, curl_socket_t s, int evBitmask,
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const char *info)
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{
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int numhandles = 0;
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CURLMcode result = curl_multi_socket_action(curl, s, evBitmask, &numhandles);
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if(result != CURLM_OK) {
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fprintf(stderr, "Curl error on %s: %i (%s)\n",
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info, result, curl_multi_strerror(result));
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}
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return (int)result;
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}
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/**
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* Invoke curl when a file descriptor is set.
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*/
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static int checkFdSet(CURLM *curl,
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struct Sockets *sockets, fd_set *fdset,
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int evBitmask, const char *name)
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{
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int i;
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int result = 0;
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for(i = 0; i < sockets->count; ++i) {
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if(FD_ISSET(sockets->sockets[i], fdset)) {
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result = socket_action(curl, sockets->sockets[i], evBitmask, name);
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if(result)
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break;
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}
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}
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return result;
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}
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static int testone(char *URL, int timercb, int socketcb)
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{
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int res = 0;
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CURL *curl = NULL; CURLM *m = NULL;
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struct ReadWriteSockets sockets = {{NULL, 0, 0}, {NULL, 0, 0}};
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struct timeval timeout = {-1, 0};
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int success = 0;
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/* set the limits */
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max_timer_calls = timercb;
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max_socket_calls = socketcb;
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timer_calls = 0; /* reset the globals */
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socket_calls = 0;
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fprintf(stderr, "start test: %d %d\n", timercb, socketcb);
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start_test_timing();
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res_global_init(CURL_GLOBAL_ALL);
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if(res)
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return res;
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easy_init(curl);
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/* specify target */
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easy_setopt(curl, CURLOPT_URL, URL);
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/* go verbose */
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easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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multi_init(m);
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multi_setopt(m, CURLMOPT_SOCKETFUNCTION, curlSocketCallback);
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multi_setopt(m, CURLMOPT_SOCKETDATA, &sockets);
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multi_setopt(m, CURLMOPT_TIMERFUNCTION, curlTimerCallback);
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multi_setopt(m, CURLMOPT_TIMERDATA, &timeout);
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multi_add_handle(m, curl);
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res = socket_action(m, CURL_SOCKET_TIMEOUT, 0, "timeout");
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if(res)
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goto test_cleanup;
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while(!checkForCompletion(m, &success)) {
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fd_set readSet, writeSet;
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curl_socket_t maxFd = 0;
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struct timeval tv = {10, 0};
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FD_ZERO(&readSet);
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FD_ZERO(&writeSet);
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updateFdSet(&sockets.read, &readSet, &maxFd);
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updateFdSet(&sockets.write, &writeSet, &maxFd);
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if(timeout.tv_sec != -1) {
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int usTimeout = getMicroSecondTimeout(&timeout);
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tv.tv_sec = usTimeout / 1000000;
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tv.tv_usec = usTimeout % 1000000;
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}
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else if(maxFd <= 0) {
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tv.tv_sec = 0;
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tv.tv_usec = 100000;
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}
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assert(maxFd);
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select_test((int)maxFd, &readSet, &writeSet, NULL, &tv);
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/* Check the sockets for reading / writing */
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res = checkFdSet(m, &sockets.read, &readSet, CURL_CSELECT_IN, "read");
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if(res)
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goto test_cleanup;
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res = checkFdSet(m, &sockets.write, &writeSet, CURL_CSELECT_OUT, "write");
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if(res)
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goto test_cleanup;
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if(timeout.tv_sec != -1 && getMicroSecondTimeout(&timeout) == 0) {
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/* Curl's timer has elapsed. */
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res = socket_action(m, CURL_SOCKET_TIMEOUT, 0, "timeout");
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if(res)
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goto test_cleanup;
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}
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abort_on_test_timeout();
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}
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if(!success) {
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fprintf(stderr, "Error getting file.\n");
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res = TEST_ERR_MAJOR_BAD;
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}
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test_cleanup:
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/* proper cleanup sequence */
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fprintf(stderr, "cleanup: %d %d\n", timercb, socketcb);
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curl_multi_remove_handle(m, curl);
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curl_easy_cleanup(curl);
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curl_multi_cleanup(m);
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curl_global_cleanup();
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/* free local memory */
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free(sockets.read.sockets);
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free(sockets.write.sockets);
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return res;
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}
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int test(char *URL)
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{
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int rc;
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/* rerun the same transfer multiple times and make it fail in different
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callback calls */
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rc = testone(URL, 0, 0);
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if(rc)
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fprintf(stderr, "test 0/0 failed: %d\n", rc);
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rc = testone(URL, 1, 0);
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if(!rc)
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fprintf(stderr, "test 1/0 failed: %d\n", rc);
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rc = testone(URL, 2, 0);
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if(!rc)
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fprintf(stderr, "test 2/0 failed: %d\n", rc);
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rc = testone(URL, 0, 1);
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if(!rc)
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fprintf(stderr, "test 0/1 failed: %d\n", rc);
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rc = testone(URL, 0, 2);
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if(!rc)
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fprintf(stderr, "test 0/2 failed: %d\n", rc);
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return 0;
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}
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