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log/syslog: remove RFC5424 version number for greater compatibility

RFC5424 specifies a version number (currently 1) after the facility and
severity in a syslog message (e.g. <7>1 TIMESTAMP ...).  This causes
rsyslog to fail to parse syslog message because the rest of the message
is not fully compliant with RFC5424.

For the widest compatibility, drop the version (messages are in the
RFC3164 BSD syslog format (e.g. <7>TIMESTAMP ...). Have tested this with
syslog-ng, rsyslog and syslogd.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7036050
This commit is contained in:
John Graham-Cumming 2013-01-04 10:21:43 -05:00 committed by Russ Cox
parent 89ec208ee8
commit c09649890f
2 changed files with 10 additions and 10 deletions

View File

@ -202,14 +202,14 @@ func (w *Writer) writeString(p Priority, s string) (int, error) {
}
// writeString: generates and writes a syslog formatted string. The
// format is as follows: <PRI>1 TIMESTAMP HOSTNAME TAG[PID]: MSG
// format is as follows: <PRI>TIMESTAMP HOSTNAME TAG[PID]: MSG
func (n netConn) writeString(p Priority, hostname, tag, msg string) (int, error) {
nl := ""
if len(msg) == 0 || msg[len(msg)-1] != '\n' {
nl = "\n"
}
timestamp := time.Now().Format(time.RFC3339)
if _, err := fmt.Fprintf(n.conn, "<%d>1 %s %s %s[%d]: %s%s", p, timestamp, hostname,
if _, err := fmt.Fprintf(n.conn, "<%d>%s %s %s[%d]: %s%s", p, timestamp, hostname,
tag, os.Getpid(), msg, nl); err != nil {
return 0, err
}

View File

@ -104,16 +104,15 @@ func TestUDPDial(t *testing.T) {
}
msg := "udp test"
l.Info(msg)
expected := fmt.Sprintf("<%d>1 ", LOG_USER+LOG_INFO) + "%s %s syslog_test[%d]: udp test\n"
expected := fmt.Sprintf("<%d>", LOG_USER+LOG_INFO) + "%s %s syslog_test[%d]: udp test\n"
rcvd := <-done
var parsedHostname, timestamp string
var pid int
if hostname, err := os.Hostname(); err != nil {
t.Fatalf("Error retrieving hostname")
} else {
if n, err := fmt.Sscanf(rcvd, expected, &timestamp, &parsedHostname, &pid); n != 3 ||
err != nil || hostname != parsedHostname {
t.Fatalf("s.Info() = '%q', didn't match '%q'", rcvd, expected)
if n, err := fmt.Sscanf(rcvd, expected, &timestamp, &parsedHostname, &pid); n != 3 || err != nil || hostname != parsedHostname {
t.Fatalf("'%q', didn't match '%q' (%d, %s)", rcvd, expected, n, err)
}
}
}
@ -146,12 +145,13 @@ func TestWrite(t *testing.T) {
t.Fatalf("WriteString() failed: %s", err)
}
rcvd := <-done
test.exp = fmt.Sprintf("<%d>1 ", test.pri) + test.exp
test.exp = fmt.Sprintf("<%d>", test.pri) + test.exp
var parsedHostname, timestamp string
var pid int
if n, err := fmt.Sscanf(rcvd, test.exp, &timestamp, &parsedHostname, &pid); n != 3 ||
err != nil || hostname != parsedHostname {
t.Fatalf("s.Info() = '%q', didn't match '%q'", rcvd, test.exp)
if n, err := fmt.Sscanf(rcvd, test.exp, &timestamp, &parsedHostname,
&pid); n != 3 || err != nil || hostname != parsedHostname {
t.Fatalf("'%q', didn't match '%q' (%d %s)", rcvd, test.exp,
n, err)
}
}
}