1 files changed, 96 insertions, 0 deletions
diff --git a/src/journal-remote/fuzz-journal-remote.c b/src/journal-remote/fuzz-journal-remote.c
new file mode 100644
index 0000000..38940cc
--- /dev/null
+++ b/src/journal-remote/fuzz-journal-remote.c
@@ -0,0 +1,96 @@
+/* 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 "path-util.h"
+#include "rm-rf.h"
+#include "strv.h"
+#include "tmpfile-util.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        _cleanup_close_ int fdin_close = -1, fdout = -1;
+        _cleanup_(rm_rf_physical_and_freep) char *tmp = NULL;
+        _cleanup_(unlink_and_freep) char *name = NULL;
+        _cleanup_(sd_journal_closep) sd_journal *j = NULL;
+        _cleanup_(journal_remote_server_destroy) RemoteServer s = {};
+        void *mem;
+        int fdin, r;
+
+        if (outside_size_range(size, 3, 65536))
+                return 0;
+
+        if (!getenv("SYSTEMD_LOG_LEVEL"))
+                log_set_max_level(LOG_ERR);
+
+        assert_se(mkdtemp_malloc("/tmp/fuzz-journal-remote-XXXXXX", &tmp) >= 0);
+        assert_se(name = path_join(tmp, "fuzz-journal-remote.XXXXXX.journal"));
+
+        fdin = fdin_close = 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, 0);
+        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)
+                return r;
+        TAKE_FD(fdin_close);
+        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, -ENODATA));
+                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;
+}