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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "fuzz.h"
#include <sys/mman.h>
#include "sd-journal.h"
#include "env-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "journal-remote.h"
#include "logs-show.h"
#include "memfd-util.h"
#include "strv.h"
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
int fdin;
void *mem;
_cleanup_(unlink_tempfilep) char name[] = "/tmp/fuzz-journal-remote.XXXXXX.journal";
_cleanup_close_ int fdout = -1;
_cleanup_(sd_journal_closep) sd_journal *j = NULL;
_cleanup_(journal_remote_server_destroy) RemoteServer s = {};
int r;
if (size <= 2)
return 0;
if (!getenv("SYSTEMD_LOG_LEVEL"))
log_set_max_level(LOG_ERR);
fdin = memfd_new_and_map("fuzz-journal-remote", size, &mem);
if (fdin < 0)
return log_error_errno(fdin, "memfd_new_and_map() failed: %m");
memcpy(mem, data, size);
assert_se(munmap(mem, size) == 0);
fdout = mkostemps(name, STRLEN(".journal"), O_CLOEXEC);
if (fdout < 0)
return log_error_errno(errno, "mkostemps() failed: %m");
/* In */
r = journal_remote_server_init(&s, name, JOURNAL_WRITE_SPLIT_NONE, false, false);
if (r < 0) {
assert_se(IN_SET(r, -ENOMEM, -EMFILE, -ENFILE));
return r;
}
r = journal_remote_add_source(&s, fdin, (char*) "fuzz-data", false);
if (r < 0) {
safe_close(fdin);
return r;
}
assert(r > 0);
while (s.active)
assert_se(journal_remote_handle_raw_source(NULL, fdin, 0, &s) >= 0);
assert_se(close(fdin) < 0 && errno == EBADF); /* Check that the fd is closed already */
/* Out */
r = sd_journal_open_files(&j, (const char**) STRV_MAKE(name), 0);
if (r < 0) {
log_error_errno(r, "sd_journal_open_files([\"%s\"]) failed: %m", name);
assert_se(IN_SET(r, -ENOMEM, -EMFILE, -ENFILE));
return r;
}
_cleanup_fclose_ FILE *dev_null = NULL;
if (getenv_bool("SYSTEMD_FUZZ_OUTPUT") <= 0) {
dev_null = fopen("/dev/null", "we");
if (!dev_null)
return log_error_errno(errno, "fopen(\"/dev/null\") failed: %m");
}
for (OutputMode mode = 0; mode < _OUTPUT_MODE_MAX; mode++) {
if (!dev_null)
log_info("/* %s */", output_mode_to_string(mode));
r = show_journal(dev_null ?: stdout, j, mode, 0, 0, -1, 0, NULL);
assert_se(r >= 0);
r = sd_journal_seek_head(j);
assert_se(r >= 0);
}
return 0;
}
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