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From 86cf4118a04afbc67d0231f8b53cf3629258032a Mon Sep 17 00:00:00 2001
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From: Evgeny Vereshchagin <evvers@ya.ru>
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Date: Mon, 3 Sep 2018 06:18:26 +0300
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Subject: [PATCH] tests: add a rudimentary fuzzer for
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server_process_syslog_message (#9979)
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(cherry picked from commit a70f343cacf03ac51cdefb0d2e7651b04fd2e23a)
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Resolves: #1696224
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---
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src/fuzz/fuzz-journald-syslog.c | 29 +++++++++++++++++++++++++++++
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src/fuzz/meson.build | 5 +++++
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2 files changed, 34 insertions(+)
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create mode 100644 src/fuzz/fuzz-journald-syslog.c
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diff --git a/src/fuzz/fuzz-journald-syslog.c b/src/fuzz/fuzz-journald-syslog.c
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new file mode 100644
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index 0000000000..7730f60875
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--- /dev/null
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+++ b/src/fuzz/fuzz-journald-syslog.c
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@@ -0,0 +1,29 @@
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+/* SPDX-License-Identifier: LGPL-2.1+ */
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+
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+#include "alloc-util.h"
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+#include "fuzz.h"
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+#include "journald-server.h"
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+#include "journald-syslog.h"
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+#include "sd-event.h"
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+
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+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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+ Server s = {};
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+ char *label = NULL;
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+ size_t label_len = 0;
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+ struct ucred *ucred = NULL;
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+ struct timeval *tv = NULL;
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+
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+ if (size == 0)
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+ return 0;
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+
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+ assert_se(sd_event_default(&s.event) >= 0);
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+ s.syslog_fd = s.native_fd = s.stdout_fd = s.dev_kmsg_fd = s.audit_fd = s.hostname_fd = s.notify_fd = -1;
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+ s.buffer = memdup_suffix0(data, size);
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+ assert_se(s.buffer);
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+ s.buffer_size = size + 1;
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+ s.storage = STORAGE_NONE;
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+ server_process_syslog_message(&s, s.buffer, size, ucred, tv, label, label_len);
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+ server_done(&s);
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+
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+ return 0;
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+}
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diff --git a/src/fuzz/meson.build b/src/fuzz/meson.build
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index ad44778889..28770b68b8 100644
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--- a/src/fuzz/meson.build
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+++ b/src/fuzz/meson.build
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@@ -19,6 +19,11 @@ fuzzers += [
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libshared],
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[libmount]],
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+ [['src/fuzz/fuzz-journald-syslog.c'],
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+ [libjournal_core,
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+ libshared],
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+ [libselinux]],
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+
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[['src/fuzz/fuzz-journal-remote.c'],
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[libsystemd_journal_remote,
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libshared],
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