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authorShiz <hi@shiz.me>2017-05-09 00:37:32 +0200
committerWilliam Pitcock <nenolod@dereferenced.org>2017-05-11 04:02:28 +0000
commit318c497f003be1645152235d1b08005f7dfde3ee (patch)
tree32510e5fcd371b224fbe629708a9169c2ee8e06c /main/busybox/0015-syslogd-adjust-timezone-option.patch
parent5246e1f211639aed5320fa8f954bd06c83157a80 (diff)
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main/busybox: add -Z option to syslogd and enable it by default
Diffstat (limited to 'main/busybox/0015-syslogd-adjust-timezone-option.patch')
-rw-r--r--main/busybox/0015-syslogd-adjust-timezone-option.patch105
1 files changed, 105 insertions, 0 deletions
diff --git a/main/busybox/0015-syslogd-adjust-timezone-option.patch b/main/busybox/0015-syslogd-adjust-timezone-option.patch
new file mode 100644
index 0000000000..ba2b9aae42
--- /dev/null
+++ b/main/busybox/0015-syslogd-adjust-timezone-option.patch
@@ -0,0 +1,105 @@
+From 97577835169acc9ee8ef25b0561cbfaa78463f5c Mon Sep 17 00:00:00 2001
+From: Shiz <hi@shiz.me>
+Date: Mon, 8 May 2017 23:09:13 +0200
+Subject: [PATCH] sysklogd: add -Z option to adjust message timezones
+
+Some syslog() implementations like musl's[1] always send timestamps in UTC.
+This change adds a new option to syslogd, -Z, to assume incoming timestamps
+are always UTC and adjust them to the local timezone (of the syslogd) before
+logging.
+
+[1]: http://www.openwall.com/lists/musl/2014/01/29/1
+
+Signed-off-by: Shiz <hi@shiz.me>
+---
+ sysklogd/syslogd.c | 23 +++++++++++++++++++----
+ 1 file changed, 19 insertions(+), 4 deletions(-)
+
+diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
+index d64ff27..159336e 100644
+--- a/sysklogd/syslogd.c
++++ b/sysklogd/syslogd.c
+@@ -122,6 +122,7 @@
+ //usage: "(this version of syslogd ignores /etc/syslog.conf)\n"
+ //usage: )
+ //usage: "\n -n Run in foreground"
++//usage: "\n -Z Adjust incoming UTC times to local time"
+ //usage: IF_FEATURE_REMOTE_LOG(
+ //usage: "\n -R HOST[:PORT] Log to HOST:PORT (default PORT:514)"
+ //usage: "\n -L Log locally and via network (default is network only if -R)"
+@@ -233,6 +234,8 @@ typedef struct logRule_t {
+ /*int markInterval;*/ \
+ /* level of messages to be logged */ \
+ int logLevel; \
++ /* whether to adjust message timezone */\
++ int adjustTimezone; \
+ IF_FEATURE_ROTATE_LOGFILE( \
+ /* max size of file before rotation */ \
+ unsigned logFileSize; \
+@@ -316,6 +319,7 @@ enum {
+ OPTBIT_outfile, // -O
+ OPTBIT_loglevel, // -l
+ OPTBIT_small, // -S
++ OPTBIT_adjusttz, // -Z
+ IF_FEATURE_ROTATE_LOGFILE(OPTBIT_filesize ,) // -s
+ IF_FEATURE_ROTATE_LOGFILE(OPTBIT_rotatecnt ,) // -b
+ IF_FEATURE_REMOTE_LOG( OPTBIT_remotelog ,) // -R
+@@ -330,6 +334,7 @@ enum {
+ OPT_outfile = 1 << OPTBIT_outfile ,
+ OPT_loglevel = 1 << OPTBIT_loglevel,
+ OPT_small = 1 << OPTBIT_small ,
++ OPT_adjusttz = 1 << OPTBIT_adjusttz,
+ 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 +344,7 @@ 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:SZ" \
+ IF_FEATURE_ROTATE_LOGFILE("s:" ) \
+ IF_FEATURE_ROTATE_LOGFILE("b:" ) \
+ IF_FEATURE_REMOTE_LOG( "R:*") \
+@@ -815,17 +820,23 @@ static void timestamp_and_log(int pri, char *msg, int len)
+ {
+ char *timestamp;
+ time_t now;
++ struct tm nowtm = { .tm_isdst = 0 };
+
+ /* Jan 18 00:11:22 msg... */
+ /* 01234567890123456 */
+ if (len < 16 || msg[3] != ' ' || msg[6] != ' '
+ || msg[9] != ':' || msg[12] != ':' || msg[15] != ' '
+ ) {
+- time(&now);
++ now = time(NULL);
+ timestamp = ctime(&now) + 4; /* skip day of week */
+ } else {
+- now = 0;
+- timestamp = msg;
++ if (G.adjustTimezone && strptime(msg, "%b %e %T", &nowtm)) {
++ now = mktime(&nowtm) - timezone;
++ timestamp = ctime(&now) + 4; /* skip day of week */
++ } else {
++ now = 0;
++ timestamp = msg;
++ }
+ msg += 16;
+ }
+ timestamp[15] = '\0';
+@@ -1130,6 +1141,10 @@ int syslogd_main(int argc UNUSED_PARAM, char **argv)
+ if (opts & OPT_loglevel) // -l
+ G.logLevel = xatou_range(opt_l, 1, 8);
+ //if (opts & OPT_small) // -S
++ if (opts & OPT_adjusttz) { // -Z
++ G.adjustTimezone = 1;
++ tzset();
++ }
+ #if ENABLE_FEATURE_ROTATE_LOGFILE
+ if (opts & OPT_filesize) // -s
+ G.logFileSize = xatou_range(opt_s, 0, INT_MAX/1024) * 1024;
+--
+2.10.0
+
+