1 files changed, 78 insertions, 0 deletions
diff --git a/src/fuzz/fuzz-journal-remote.c b/src/fuzz/fuzz-journal-remote.c
new file mode 100644
index 0000000..3ab4eb0
--- /dev/null
+++ b/src/fuzz/fuzz-journal-remote.c
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#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) {
+        _cleanup_fclose_ FILE *dev_null = NULL;
+        RemoteServer s = {};
+        char name[] = "/tmp/fuzz-journal-remote.XXXXXX.journal";
+        void *mem;
+        int fdin; /* will be closed by journal_remote handler after EOF */
+        _cleanup_close_ int fdout = -1;
+        sd_journal *j;
+        OutputMode mode;
+        int r;
+
+        if (size <= 2)
+                return 0;
+
+        if (!getenv("SYSTEMD_LOG_LEVEL"))
+                log_set_max_level(LOG_CRIT);
+
+        assert_se((fdin = memfd_new_and_map("fuzz-journal-remote", size, &mem)) >= 0);
+        memcpy(mem, data, size);
+        assert_se(munmap(mem, size) == 0);
+
+        fdout = mkostemps(name, STRLEN(".journal"), O_CLOEXEC);
+        assert_se(fdout >= 0);
+
+        /* In */
+
+        assert_se(journal_remote_server_init(&s, name, JOURNAL_WRITE_SPLIT_NONE, false, false) >= 0);
+
+        assert_se(journal_remote_add_source(&s, fdin, (char*) "fuzz-data", false) > 0);
+
+        while (s.active) {
+                r = journal_remote_handle_raw_source(NULL, fdin, 0, &s);
+                assert_se(r >= 0);
+        }
+
+        journal_remote_server_destroy(&s);
+        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);
+        assert_se(r >= 0);
+
+        if (getenv_bool("SYSTEMD_FUZZ_OUTPUT") <= 0)
+                assert_se(dev_null = fopen("/dev/null", "we"));
+
+        for (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);
+        }
+
+        sd_journal_close(j);
+        unlink(name);
+
+        return 0;
+}