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From d82c40a2377b487ef83aa1fb907ec275a1b3e86e Mon Sep 17 00:00:00 2001
From: Michal Sekletar <msekleta@redhat.com>
Date: Wed, 30 May 2018 16:27:22 +0200
Subject: [PATCH] journal: forward messages from /dev/log unmodified to
syslog.socket
(cherry picked from commit bb3ff70a86faff85fe482995c8ba5332b1a34f76)
Resolves: #1409659
---
src/journal/journald-server.c | 2 +-
src/journal/journald-syslog.c | 39 +++++++++++++++++++++++++--------------
src/journal/journald-syslog.h | 2 +-
3 files changed, 27 insertions(+), 16 deletions(-)
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 7c69061f4..7e67e055e 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -1294,7 +1294,7 @@ int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void
if (fd == s->syslog_fd) {
if (n > 0 && n_fds == 0)
- server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
+ server_process_syslog_message(s, s->buffer, n, ucred, tv, label, label_len);
else if (n_fds > 0)
log_warning("Got file descriptors via syslog socket. Ignoring.");
diff --git a/src/journal/journald-syslog.c b/src/journal/journald-syslog.c
index b499a0d38..01d2bf69f 100644
--- a/src/journal/journald-syslog.c
+++ b/src/journal/journald-syslog.c
@@ -109,7 +109,7 @@ static void forward_syslog_iovec(Server *s, const struct iovec *iovec, unsigned
log_debug_errno(errno, "Failed to forward syslog message: %m");
}
-static void forward_syslog_raw(Server *s, int priority, const char *buffer, const struct ucred *ucred, const struct timeval *tv) {
+static void forward_syslog_raw(Server *s, int priority, const char *buffer, size_t buffer_len, const struct ucred *ucred, const struct timeval *tv) {
struct iovec iovec;
assert(s);
@@ -118,7 +118,9 @@ static void forward_syslog_raw(Server *s, int priority, const char *buffer, cons
if (LOG_PRI(priority) > s->max_level_syslog)
return;
- IOVEC_SET_STRING(iovec, buffer);
+ iovec.iov_base = (char *) buffer;
+ iovec.iov_len = buffer_len;
+
forward_syslog_iovec(s, &iovec, 1, ucred, tv);
}
@@ -311,40 +313,49 @@ static void syslog_skip_date(char **buf) {
void server_process_syslog_message(
Server *s,
const char *buf,
+ size_t buf_len,
const struct ucred *ucred,
const struct timeval *tv,
const char *label,
size_t label_len) {
char syslog_priority[sizeof("PRIORITY=") + DECIMAL_STR_MAX(int)],
- syslog_facility[sizeof("SYSLOG_FACILITY=") + DECIMAL_STR_MAX(int)];
+ syslog_facility[sizeof("SYSLOG_FACILITY=") + DECIMAL_STR_MAX(int)], *msg;
const char *message = NULL, *syslog_identifier = NULL, *syslog_pid = NULL;
struct iovec iovec[N_IOVEC_META_FIELDS + 6];
- unsigned n = 0;
+ unsigned n = 0, i;
int priority = LOG_USER | LOG_INFO;
_cleanup_free_ char *identifier = NULL, *pid = NULL;
- const char *orig;
assert(s);
assert(buf);
- orig = buf;
- syslog_parse_priority(&buf, &priority, true);
+ /* We are creating copy of the message because we want to forward original message verbatim to the legacy
+ syslog implementation */
+ for (i = buf_len; i > 0; i--)
+ if (!strchr(WHITESPACE, buf[i-1]))
+ break;
+
+ msg = newa(char, i + 1);
+ *((char *) mempcpy(msg, buf, i)) = 0;
+ msg += strspn(msg, WHITESPACE);
+
+ syslog_parse_priority((const char **)&msg, &priority, true);
if (s->forward_to_syslog)
- forward_syslog_raw(s, priority, orig, ucred, tv);
+ forward_syslog_raw(s, priority, buf, buf_len, ucred, tv);
- syslog_skip_date((char**) &buf);
- syslog_parse_identifier(&buf, &identifier, &pid);
+ syslog_skip_date(&msg);
+ syslog_parse_identifier((const char**)&msg, &identifier, &pid);
if (s->forward_to_kmsg)
- server_forward_kmsg(s, priority, identifier, buf, ucred);
+ server_forward_kmsg(s, priority, identifier, msg, ucred);
if (s->forward_to_console)
- server_forward_console(s, priority, identifier, buf, ucred);
+ server_forward_console(s, priority, identifier, msg, ucred);
if (s->forward_to_wall)
- server_forward_wall(s, priority, identifier, buf, ucred);
+ server_forward_wall(s, priority, identifier, msg, ucred);
IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog");
@@ -368,7 +379,7 @@ void server_process_syslog_message(
IOVEC_SET_STRING(iovec[n++], syslog_pid);
}
- message = strjoina("MESSAGE=", buf);
+ message = strjoina("MESSAGE=", msg);
if (message)
IOVEC_SET_STRING(iovec[n++], message);
diff --git a/src/journal/journald-syslog.h b/src/journal/journald-syslog.h
index 3774ebdf0..e593be99a 100644
--- a/src/journal/journald-syslog.h
+++ b/src/journal/journald-syslog.h
@@ -29,7 +29,7 @@ size_t syslog_parse_identifier(const char **buf, char **identifier, char **pid);
void server_forward_syslog(Server *s, int priority, const char *identifier, const char *message, const struct ucred *ucred, const struct timeval *tv);
-void server_process_syslog_message(Server *s, const char *buf, const struct ucred *ucred, const struct timeval *tv, const char *label, size_t label_len);
+void server_process_syslog_message(Server *s, const char *buf, size_t buf_len, const struct ucred *ucred, const struct timeval *tv, const char *label, size_t label_len);
int server_open_syslog_socket(Server *s);
void server_maybe_warn_forward_syslog_missed(Server *s);