From 1c707d59ee9f1458e4b9c1e4442fb0a81b1558b0 Mon Sep 17 00:00:00 2001
From: Fabian Keil <fk@fabiankeil.de>
Date: Mon, 8 Nov 2021 11:21:34 +0100
Subject: [PATCH 270/325] syslogd: Add ElectroBSD output format

Obtained from: ElectroBSD
---
 usr.sbin/syslogd/syslogd.c | 68 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 66 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/syslogd/syslogd.c b/usr.sbin/syslogd/syslogd.c
index 4b30c27e9e2d..fc6257a80edb 100644
--- a/usr.sbin/syslogd/syslogd.c
+++ b/usr.sbin/syslogd/syslogd.c
@@ -402,6 +402,7 @@ static int	needdofsync = 0; /* Are any file(s) waiting to be fsynced? */
 static struct pidfh *pfh;
 static int	sigpipe[2];	/* Pipe to catch a signal during select(). */
 static bool	RFC3164OutputFormat = true; /* Use legacy format by default. */
+static bool	ElectroBSDOutputFormat = false;
 
 static volatile sig_atomic_t MarkSet, WantDie, WantInitialize, WantReapchild;
 
@@ -665,7 +666,10 @@ main(int argc, char *argv[])
 			resolve = 0;
 			break;
 		case 'O':
-			if (strcmp(optarg, "bsd") == 0 ||
+		       if (strcmp(optarg, "electrobsd") == 0) {
+				ElectroBSDOutputFormat = true;
+				RFC3164OutputFormat = false;
+			} else if (strcmp(optarg, "bsd") == 0 ||
 			    strcmp(optarg, "rfc3164") == 0)
 				RFC3164OutputFormat = true;
 			else if (strcmp(optarg, "syslog") == 0 ||
@@ -1947,6 +1951,63 @@ fprintlog_rfc5424(struct filed *f, const char *hostname, const char *app_name,
 	fprintlog_write(f, &il, flags);
 }
 
+
+/*
+ * Similiar to fprintlog_rfc5424() but the priority is moved
+ * after the app name so log messages always start with the
+ * timestamp and are more pleasant to read.
+ */
+static void
+fprintlog_electrobsd(struct filed *f, const char *hostname, const char *app_name,
+    const char *procid, const char *msgid, const char *structured_data,
+    const char *msg, int flags)
+{
+	struct iovlist il;
+	suseconds_t usec;
+	int i;
+	char timebuf[33], priority_number[5];
+
+	iovlist_init(&il);
+	if (f->f_type == F_WALL)
+		iovlist_append(&il, "\r\n\aMessage from syslogd ...\r\n");
+	if (strftime(timebuf, sizeof(timebuf), "%FT%T.______%z",
+	    &f->f_lasttime.tm) == sizeof(timebuf) - 2) {
+		/* Add colon to the time zone offset, which %z doesn't do. */
+		timebuf[32] = '\0';
+		timebuf[31] = timebuf[30];
+		timebuf[30] = timebuf[29];
+		timebuf[29] = ':';
+
+		/* Overwrite space for microseconds with actual value. */
+		usec = f->f_lasttime.usec;
+		for (i = 25; i >= 20; --i) {
+			timebuf[i] = usec % 10 + '0';
+			usec /= 10;
+		}
+		iovlist_append(&il, timebuf);
+	} else
+		iovlist_append(&il, "-");
+	iovlist_append(&il, " ");
+	iovlist_append(&il, hostname);
+	iovlist_append(&il, " ");
+	iovlist_append(&il, app_name == NULL ? "-" : app_name);
+	iovlist_append(&il, " ");
+	iovlist_append(&il, "<");
+	snprintf(priority_number, sizeof(priority_number), "%d", f->f_prevpri);
+	iovlist_append(&il, priority_number);
+	iovlist_append(&il, ">1 ");
+	iovlist_append(&il, procid == NULL ? "-" : procid);
+	iovlist_append(&il, " ");
+	iovlist_append(&il, msgid == NULL ? "-" : msgid);
+	iovlist_append(&il, " ");
+	iovlist_append(&il, structured_data == NULL ? "-" : structured_data);
+	iovlist_append(&il, " ");
+	iovlist_append(&il, msg);
+
+	fprintlog_write(f, &il, flags);
+}
+
+
 static void
 fprintlog_rfc3164(struct filed *f, const char *hostname, const char *app_name,
     const char *procid, const char *msg, int flags)
@@ -2071,7 +2132,10 @@ fprintlog_first(struct filed *f, const char *hostname, const char *app_name,
 		return;
 	}
 
-	if (RFC3164OutputFormat)
+	if (ElectroBSDOutputFormat)
+		fprintlog_electrobsd(f, hostname, app_name, procid, msgid,
+		    structured_data, msg, flags);
+	else if (RFC3164OutputFormat)
 		fprintlog_rfc3164(f, hostname, app_name, procid, msg, flags);
 	else
 		fprintlog_rfc5424(f, hostname, app_name, procid, msgid,
-- 
2.32.0