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ossfuzz: fix picky compiler warnings, make it pass checksrc

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- fix compiler warnings.
- make it pass `checksrc`.
- fix shell `set -u` errors.
  Follow-up to 5012442850 #901
- REUSE: tidy up ossfuzz files.

Cherry-picked from #1484
Closes #1526
This commit is contained in:
Viktor Szakats
2024-11-24 18:05:34 +01:00
parent a3aa6b4ca8
commit 96cbe61896
6 changed files with 119 additions and 118 deletions
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2
REUSE.toml
View File

@ -37,7 +37,6 @@ path = [
"tests/openssh_server/ca_*",
"tests/openssh_server/ssh_*",
"tests/openssh_server/sshd_config",
"tests/ossfuzz/*",
"tests/test_read_algos.txt",
"vms/libssh2_config.h",
"vms/libssh2_*.dcl",
@ -51,6 +50,7 @@ path = [
"m4/.gitignore",
"src/.gitignore",
"tests/.gitignore",
"tests/ossfuzz/.gitignore",
]
SPDX-FileCopyrightText = "The libssh2 project and its contributors."
SPDX-License-Identifier = "BSD-3-Clause"

2
ci/checksrc.sh
View File

@ -6,5 +6,5 @@ set -e
cd "$(dirname "$0")/.."
git ls-files "*.[ch]" | xargs -n1 \
git ls-files "*.[ch]" "*.cc" | xargs -n1 \
./ci/checksrc.pl -i4 -m79 -AFOPENMODE -ASNPRINTF -ATYPEDEFSTRUCT

3
tests/ossfuzz/Makefile.am
View File

@ -1,3 +1,6 @@
# Copyright (C) The libssh2 project and its contributors.
# SPDX-License-Identifier: BSD-3-Clause
AM_CPPFLAGS = -I$(top_builddir)/include
LDADD = $(top_builddir)/src/libssh2.la

14
tests/ossfuzz/ossfuzz.sh
View File

@ -1,4 +1,6 @@
#!/usr/bin/env bash
# Copyright (C) The libssh2 project and its contributors.
# SPDX-License-Identifier: BSD-3-Clause
set -eu
@ -8,12 +10,12 @@ set -eu
# Save off the current folder as the build root.
export BUILD_ROOT="$PWD"
echo "CC: $CC"
echo "CXX: $CXX"
echo "LIB_FUZZING_ENGINE: $LIB_FUZZING_ENGINE"
echo "CFLAGS: $CFLAGS"
echo "CXXFLAGS: $CXXFLAGS"
echo "OUT: $OUT"
echo "CC: ${CC:-}"
echo "CXX: ${CXX:-}"
echo "LIB_FUZZING_ENGINE: ${LIB_FUZZING_ENGINE:-}"
echo "CFLAGS: ${CFLAGS:-}"
echo "CXXFLAGS: ${CXXFLAGS:-}"
echo "OUT: ${OUT:-}"
MAKEFLAGS+="-j$(nproc)"
export MAKEFLAGS

122
tests/ossfuzz/ssh2_client_fuzzer.cc
View File

@ -14,84 +14,84 @@
#include "testinput.h"
#define FUZZ_ASSERT(COND) \
if(!(COND)) \
{ \
fprintf(stderr, "Assertion failed: " #COND "\n%s", \
strerror(errno)); \
assert((COND)); \
}
do { \
if(!(COND)) \
{ \
fprintf(stderr, "Assertion failed: " #COND "\n%s", \
strerror(errno)); \
assert((COND)); \
} \
} while(0)
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
int socket_fds[2] = {-1, -1};
ssize_t written;
int rc;
LIBSSH2_SESSION *session = NULL;
int handshake_completed = 0;
int socket_fds[2] = {-1, -1};
ssize_t written;
int rc;
LIBSSH2_SESSION *session = NULL;
int handshake_completed = 0;
rc = libssh2_init(0);
rc = libssh2_init(0);
if(rc) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
goto EXIT_LABEL;
}
if(rc) {
fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
goto EXIT_LABEL;
}
// Create a socket pair so data can be sent in.
rc = socketpair(AF_UNIX, SOCK_STREAM, 0, socket_fds);
FUZZ_ASSERT(rc == 0);
/* Create a socket pair so data can be sent in. */
rc = socketpair(AF_UNIX, SOCK_STREAM, 0, socket_fds);
FUZZ_ASSERT(rc == 0);
written = send(socket_fds[1], data, size, 0);
written = send(socket_fds[1], data, size, 0);
if(written != size)
{
// Handle whatever error case we're in.
fprintf(stderr, "send() of %zu bytes returned %zu (%d)\n",
size,
written,
errno);
goto EXIT_LABEL;
}
if(written != (ssize_t)size) {
/* Handle whatever error case we're in. */
fprintf(stderr, "send() of %zu bytes returned %zu (%d)\n",
size,
written,
errno);
goto EXIT_LABEL;
}
rc = shutdown(socket_fds[1], SHUT_WR);
if(rc)
{
fprintf(stderr, "socket shutdown failed (%d)\n", rc);
goto EXIT_LABEL;
}
rc = shutdown(socket_fds[1], SHUT_WR);
if(rc) {
fprintf(stderr, "socket shutdown failed (%d)\n", rc);
goto EXIT_LABEL;
}
// Create a session and start the handshake using the fuzz data passed in.
session = libssh2_session_init();
if(session) {
libssh2_session_set_blocking(session, 1);
}
else {
goto EXIT_LABEL;
}
/* Create a session and start the handshake using the fuzz data
passed in. */
session = libssh2_session_init();
if(session) {
libssh2_session_set_blocking(session, 1);
}
else {
goto EXIT_LABEL;
}
if(libssh2_session_handshake(session, socket_fds[0])) {
goto EXIT_LABEL;
}
if(libssh2_session_handshake(session, socket_fds[0])) {
goto EXIT_LABEL;
}
// If we get here the handshake actually completed.
handshake_completed = 1;
/* If we get here the handshake actually completed. */
handshake_completed = 1;
EXIT_LABEL:
if(session)
{
if(handshake_completed)
{
libssh2_session_disconnect(session,
"Normal Shutdown, Thank you for playing");
if(session) {
if(handshake_completed) {
libssh2_session_disconnect(session,
"Normal Shutdown, "
"Thank you for playing");
}
libssh2_session_free(session);
}
libssh2_session_free(session);
}
libssh2_exit();
libssh2_exit();
close(socket_fds[0]);
close(socket_fds[1]);
close(socket_fds[0]);
close(socket_fds[1]);
return 0;
return 0;
}

94
tests/ossfuzz/standaloneengine.cc
View File

@ -15,63 +15,59 @@
*/
int main(int argc, char **argv)
{
int ii;
for(ii = 1; ii < argc; ii++)
{
FILE *infile;
printf("[%s] ", argv[ii]);
int ii;
for(ii = 1; ii < argc; ii++) {
FILE *infile;
printf("[%s] ", argv[ii]);
/* Try and open the file. */
infile = fopen(argv[ii], "rb");
if(infile)
{
uint8_t *buffer = NULL;
size_t buffer_len;
/* Try and open the file. */
infile = fopen(argv[ii], "rb");
if(infile) {
uint8_t *buffer = NULL;
size_t buffer_len;
printf("Opened.. ");
printf("Opened.. ");
/* Get the length of the file. */
fseek(infile, 0L, SEEK_END);
buffer_len = ftell(infile);
/* Get the length of the file. */
fseek(infile, 0L, SEEK_END);
buffer_len = (size_t)ftell(infile);
/* Reset the file indicator to the beginning of the file. */
fseek(infile, 0L, SEEK_SET);
/* Reset the file indicator to the beginning of the file. */
fseek(infile, 0L, SEEK_SET);
/* Allocate a buffer for the file contents. */
buffer = (uint8_t *)calloc(buffer_len, sizeof(uint8_t));
if(buffer)
{
/* Read all the text from the file into the buffer. */
fread(buffer, sizeof(uint8_t), buffer_len, infile);
printf("Read %zu bytes, fuzzing.. ", buffer_len);
/* Allocate a buffer for the file contents. */
buffer = (uint8_t *)calloc(buffer_len, sizeof(uint8_t));
if(buffer) {
/* Read all the text from the file into the buffer. */
fread(buffer, sizeof(uint8_t), buffer_len, infile);
printf("Read %zu bytes, fuzzing.. ", buffer_len);
/* Call the fuzzer with the data. */
LLVMFuzzerTestOneInput(buffer, buffer_len);
/* Call the fuzzer with the data. */
LLVMFuzzerTestOneInput(buffer, buffer_len);
printf("complete.");
printf("complete.");
/* Free the buffer as it's no longer needed. */
free(buffer);
buffer = NULL;
}
else
{
fprintf(stderr,
"[%s] Failed to allocate %zu bytes \n",
argv[ii],
buffer_len);
}
/* Free the buffer as it's no longer needed. */
free(buffer);
buffer = NULL;
}
else {
fprintf(stderr,
"[%s] Failed to allocate %zu bytes \n",
argv[ii],
buffer_len);
}
/* Close the file as it's no longer needed. */
fclose(infile);
infile = NULL;
/* Close the file as it's no longer needed. */
fclose(infile);
infile = NULL;
}
else {
/* Failed to open the file.
Maybe wrong name or wrong permissions? */
fprintf(stderr, "[%s] Open failed. \n", argv[ii]);
}
printf("\n");
}
else
{
/* Failed to open the file. Maybe wrong name or wrong permissions? */
fprintf(stderr, "[%s] Open failed. \n", argv[ii]);
}
printf("\n");
}
}