mirror of
https://github.com/moparisthebest/curl
synced 2024-10-31 15:45:12 -04:00
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*
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# Copyright 2016 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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################################################################################
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <netinet/in.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/select.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <curl/curl.h>
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static const void *cur_data;
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static int cur_size = -1;
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static int server_fd = -1;
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static int client_fd = -1;
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static int wrote = 0;
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static void fail(const char *why) {
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perror(why);
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exit(1);
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}
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static curl_socket_t open_sock(void *ctx, curlsocktype purpose,
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struct curl_sockaddr *address) {
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if(cur_size == -1) {
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fail("not fuzzing");
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}
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if(server_fd != -1 || client_fd != -1) {
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fail("already connected");
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}
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int fds[2];
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if(socketpair(AF_UNIX, SOCK_STREAM, 0, fds)) {
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fail("socketpair");
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}
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server_fd = fds[0];
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client_fd = fds[1];
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if(write(server_fd, cur_data, cur_size) != cur_size) {
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fail("write");
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}
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if(shutdown(server_fd, SHUT_WR)) {
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fail("shutdown");
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}
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return client_fd;
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}
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static int set_opt(void *ctx, curl_socket_t curlfd, curlsocktype purpose) {
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return CURL_SOCKOPT_ALREADY_CONNECTED;
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}
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static size_t write_callback(char *ptr, size_t size, size_t n, void *ctx) {
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return size * n;
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}
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static size_t read_callback(char *buf, size_t size, size_t n, void *ctx) {
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if(wrote || size * n == 0) {
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return 0;
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}
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wrote = 1;
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buf[0] = 'a';
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return 1;
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}
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int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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cur_data = Data;
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cur_size = Size;
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wrote = 0;
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CURL *curl = curl_easy_init();
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
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curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
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curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, open_sock);
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curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, set_opt);
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#if defined(FUZZER_FTP)
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curl_easy_setopt(curl, CURLOPT_URL, "ftp://user@localhost/file.txt");
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#elif defined(FUZZER_IMAP)
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curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
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curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
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curl_easy_setopt(curl, CURLOPT_URL, "imap://localhost");
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#elif defined(FUZZER_POP3)
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curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
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curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
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curl_easy_setopt(curl, CURLOPT_URL, "pop3://localhost");
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#elif defined(FUZZER_HTTP_UPLOAD)
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curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");
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curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
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curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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#elif defined(FUZZER_HTTP2)
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curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");
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/* use non-TLS HTTP/2 without HTTP/1.1 Upgrade: */
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curl_easy_setopt(curl, CURLOPT_HTTP_VERSION,
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CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE);
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#else
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curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");
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curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
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#endif
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curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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close(server_fd);
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close(client_fd);
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server_fd = -1;
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client_fd = -1;
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cur_data = NULL;
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cur_size = -1;
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return 0;
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}
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