1 files changed, 17 insertions, 8 deletions

diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index 4265f4f90..5630d97fc 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -140,6 +140,7 @@
 //usage:        )
 //usage:     "\n        -l N            Log only messages more urgent than prio N (1-8)"
 //usage:     "\n        -S              Smaller output"
+//usage:     "\n        -t              Strip client-generated timestamps"
 //usage:        IF_FEATURE_SYSLOGD_DUP(
 //usage:     "\n        -D              Drop duplicates"
 //usage:        )
@@ -316,6 +317,7 @@ enum {
         OPTBIT_outfile, // -O
         OPTBIT_loglevel, // -l
         OPTBIT_small, // -S
+        OPTBIT_timestamp, // -t
         IF_FEATURE_ROTATE_LOGFILE(OPTBIT_filesize   ,)  // -s
         IF_FEATURE_ROTATE_LOGFILE(OPTBIT_rotatecnt  ,)  // -b
         IF_FEATURE_REMOTE_LOG(    OPTBIT_remotelog  ,)  // -R
@@ -330,6 +332,7 @@ enum {
         OPT_outfile     = 1 << OPTBIT_outfile ,
         OPT_loglevel    = 1 << OPTBIT_loglevel,
         OPT_small       = 1 << OPTBIT_small   ,
+        OPT_timestamp   = 1 << OPTBIT_timestamp,
         OPT_filesize    = IF_FEATURE_ROTATE_LOGFILE((1 << OPTBIT_filesize   )) + 0,
         OPT_rotatecnt   = IF_FEATURE_ROTATE_LOGFILE((1 << OPTBIT_rotatecnt  )) + 0,
         OPT_remotelog   = IF_FEATURE_REMOTE_LOG(    (1 << OPTBIT_remotelog  )) + 0,
@@ -339,7 +342,7 @@ enum {
         OPT_cfg         = IF_FEATURE_SYSLOGD_CFG(   (1 << OPTBIT_cfg        )) + 0,
         OPT_kmsg        = IF_FEATURE_KMSG_SYSLOG(   (1 << OPTBIT_kmsg       )) + 0,
 };
-#define OPTION_STR "m:nO:l:S" \
+#define OPTION_STR "m:nO:l:St" \
         IF_FEATURE_ROTATE_LOGFILE("s:" ) \
         IF_FEATURE_ROTATE_LOGFILE("b:" ) \
         IF_FEATURE_REMOTE_LOG(    "R:*") \
@@ -813,21 +816,27 @@ static void parse_fac_prio_20(int pri, char *res20)
  * that there is no timestamp, short-circuiting the test. */
 static void timestamp_and_log(int pri, char *msg, int len)
 {
-        char *timestamp;
+        char *timestamp = NULL;
         time_t now;
 
         /* Jan 18 00:11:22 msg... */
         /* 01234567890123456 */
-        if (len < 16 || msg[3] != ' ' || msg[6] != ' '
-         || msg[9] != ':' || msg[12] != ':' || msg[15] != ' '
+        if (len >= 16 && msg[3] == ' ' && msg[6] == ' '
+         && msg[9] == ':' && msg[12] == ':' && msg[15] == ' '
         ) {
+                if (!(option_mask32 & OPT_timestamp)) {
+                        /* use message timestamp */
+                        timestamp = msg;
+                        now = 0;
+                }
+                msg += 16;
+        }
+
+        if (!timestamp) {
                 time(&now);
                 timestamp = ctime(&now) + 4; /* skip day of week */
-        } else {
-                now = 0;
-                timestamp = msg;
-                msg += 16;
         }
+
         timestamp[15] = '\0';
 
         if (option_mask32 & OPT_kmsg) {