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authorFrederik B <freddy@flashpad>2017-05-09 20:07:28 +0200
committerDaniel Stenberg <daniel@haxx.se>2017-06-15 22:11:30 +0200
commitb9ead67e12b4d920ab958bfa8597e10d6fe3dd36 (patch)
treeb1bf8c2df95d9c6a4d9d635f3843158b282eeabc /tests
parentefc83d6d541ab62c7beb1ddca09f6c1986fbeac7 (diff)
fuzz: bring oss-fuzz initial code converted to C89
Diffstat (limited to 'tests')
-rw-r--r--tests/fuzz/CMakeLists.txt1
-rw-r--r--tests/fuzz/Makefile.am24
-rw-r--r--tests/fuzz/Makefile.inc19
-rw-r--r--tests/fuzz/README10
-rw-r--r--tests/fuzz/curl_fuzzer.c128
5 files changed, 182 insertions, 0 deletions
diff --git a/tests/fuzz/CMakeLists.txt b/tests/fuzz/CMakeLists.txt
new file mode 100644
index 000000000..aefedf26f
--- /dev/null
+++ b/tests/fuzz/CMakeLists.txt
@@ -0,0 +1 @@
+# FIXME, probably adapt from file in ../unit
diff --git a/tests/fuzz/Makefile.am b/tests/fuzz/Makefile.am
new file mode 100644
index 000000000..487deff41
--- /dev/null
+++ b/tests/fuzz/Makefile.am
@@ -0,0 +1,24 @@
+#***************************************************************************
+# _ _ ____ _
+# Project ___| | | | _ \| |
+# / __| | | | |_) | |
+# | (__| |_| | _ <| |___
+# \___|\___/|_| \_\_____|
+#
+# Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.haxx.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+###########################################################################
+
+
+# FIXME, probably adapt from file in ../unit
diff --git a/tests/fuzz/Makefile.inc b/tests/fuzz/Makefile.inc
new file mode 100644
index 000000000..fa4ae1c7d
--- /dev/null
+++ b/tests/fuzz/Makefile.inc
@@ -0,0 +1,19 @@
+FUZZER_HTTP11 = curl_fuzzer.c
+FUZZER_HTTP11_CPPFLAGS = $(AM_CPPFLAGS)
+
+
+FUZZER_FTP = curl_fuzzer.c
+FUZZER_FTP_CPPFLAGS = -DFUZZER_FTP $(AM_CPPFLAGS)
+
+FUZZER_IMAP = curl_fuzzer.c
+FUZZER_IMAP_CPPFLAGS = -DFUZZER_IMAP $(AM_CPPFLAGS)
+
+FUZZER_POP3 = curl_fuzzer.c
+FUZZER_POP3_CPPFLAGS = -DFUZZER_POP3 $(AM_CPPFLAGS)
+
+FUZZER_HTTP_UPLOAD = curl_fuzzer.c
+FUZZER_HTTP_UPLOAD_CPPFLAGS = -DFUZZER_HTTP_UPLOAD $(AM_CPPFLAGS)
+
+
+FUZZER_HTTP2 = curl_fuzzer.c
+FUZZER_HTTP2_CPPFLAGS = -DFUZZER_HTTP2 $(AM_CPPFLAGS)
diff --git a/tests/fuzz/README b/tests/fuzz/README
new file mode 100644
index 000000000..106d1098a
--- /dev/null
+++ b/tests/fuzz/README
@@ -0,0 +1,10 @@
+Fuzz tests
+==========
+
+The goal is to add tests for *ALL* protocols supported in libcurl.
+We will need some additional patches in the future, to increase coverage.
+
+Building the fuzz target
+========================
+
+FIXME fill out once the makefiles are in order. \ No newline at end of file
diff --git a/tests/fuzz/curl_fuzzer.c b/tests/fuzz/curl_fuzzer.c
new file mode 100644
index 000000000..2c3d57991
--- /dev/null
+++ b/tests/fuzz/curl_fuzzer.c
@@ -0,0 +1,128 @@
+/*
+# Copyright 2016 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+*/
+
+#include <errno.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/select.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <curl/curl.h>
+
+static const void *cur_data;
+static int cur_size = -1;
+static int server_fd = -1;
+static int client_fd = -1;
+static int wrote = 0;
+
+static void fail(const char *why) {
+ perror(why);
+ exit(1);
+}
+
+static curl_socket_t open_sock(void *ctx, curlsocktype purpose,
+ struct curl_sockaddr *address) {
+ if(cur_size == -1) {
+ fail("not fuzzing");
+ }
+ if(server_fd != -1 || client_fd != -1) {
+ fail("already connected");
+ }
+ int fds[2];
+ if(socketpair(AF_UNIX, SOCK_STREAM, 0, fds)) {
+ fail("socketpair");
+ }
+ server_fd = fds[0];
+ client_fd = fds[1];
+ if(write(server_fd, cur_data, cur_size) != cur_size) {
+ fail("write");
+ }
+ if(shutdown(server_fd, SHUT_WR)) {
+ fail("shutdown");
+ }
+ return client_fd;
+}
+
+static int set_opt(void *ctx, curl_socket_t curlfd, curlsocktype purpose) {
+ return CURL_SOCKOPT_ALREADY_CONNECTED;
+}
+
+static size_t write_callback(char *ptr, size_t size, size_t n, void *ctx) {
+ return size * n;
+}
+
+static size_t read_callback(char *buf, size_t size, size_t n, void *ctx) {
+ if(wrote || size * n == 0) {
+ return 0;
+ }
+ wrote = 1;
+ buf[0] = 'a';
+ return 1;
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+ cur_data = Data;
+ cur_size = Size;
+ wrote = 0;
+ CURL *curl = curl_easy_init();
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
+ curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, open_sock);
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, set_opt);
+#if defined(FUZZER_FTP)
+ curl_easy_setopt(curl, CURLOPT_URL, "ftp://user@localhost/file.txt");
+#elif defined(FUZZER_IMAP)
+ curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
+ curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
+ curl_easy_setopt(curl, CURLOPT_URL, "imap://localhost");
+#elif defined(FUZZER_POP3)
+ curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
+ curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
+ curl_easy_setopt(curl, CURLOPT_URL, "pop3://localhost");
+#elif defined(FUZZER_HTTP_UPLOAD)
+ curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");
+ curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
+ curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
+#elif defined(FUZZER_HTTP2)
+ curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");
+ /* use non-TLS HTTP/2 without HTTP/1.1 Upgrade: */
+ curl_easy_setopt(curl, CURLOPT_HTTP_VERSION,
+ CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE);
+#else
+ curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/");
+ curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
+#endif
+ curl_easy_perform(curl);
+ curl_easy_cleanup(curl);
+ close(server_fd);
+ close(client_fd);
+ server_fd = -1;
+ client_fd = -1;
+ cur_data = NULL;
+ cur_size = -1;
+ return 0;
+}