From 8d422d2c837717d3964ba4f1a3f5203a6aa54b61 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Mon, 23 Aug 2021 11:30:15 +0200
Subject: [PATCH] tpm_extendpcr: Support platforms not having syslog()

---
 src/tpm_extendpcr/tpm_extendpcr.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/tpm_extendpcr/tpm_extendpcr.c b/src/tpm_extendpcr/tpm_extendpcr.c
index 23d652f..02e0eef 100644
--- a/src/tpm_extendpcr/tpm_extendpcr.c
+++ b/src/tpm_extendpcr/tpm_extendpcr.c
@@ -19,14 +19,18 @@
 #include <crypto/hashers/hasher.h>
 #include <utils/debug.h>
 
+#ifdef HAVE_SYSLOG
 #include <syslog.h>
+#endif
 #include <getopt.h>
 #include <errno.h>
 
 
 /* logging */
 static bool log_to_stderr = TRUE;
+#ifdef HAVE_SYSLOG
 static bool log_to_syslog = TRUE;
+#endif
 static level_t default_loglevel = 1;
 
 /* global variables */
@@ -39,8 +43,6 @@ chunk_t pcr_value;
  */
 static void tpm_extendpcr_dbg(debug_t group, level_t level, char *fmt, ...)
 {
-	char buffer[8192];
-	char *current = buffer, *next;
 	va_list args;
 
 	if (level <= default_loglevel)
@@ -52,8 +54,12 @@ static void tpm_extendpcr_dbg(debug_t group, level_t level, char *fmt, ...)
 			va_end(args);
 			fprintf(stderr, "\n");
 		}
+#ifdef HAVE_SYSLOG
 		if (log_to_syslog)
 		{
+			char buffer[8192];
+			char *current = buffer, *next;
+
 			/* write in memory buffer first */
 			va_start(args, fmt);
 			vsnprintf(buffer, sizeof(buffer), fmt, args);
@@ -71,6 +77,7 @@ static void tpm_extendpcr_dbg(debug_t group, level_t level, char *fmt, ...)
 				current = next;
 			}
 		}
+#endif /* HAVE_SYSLOG*/
 	}
 }
 
@@ -85,10 +92,12 @@ static void init_log(const char *program)
 	{
 		setbuf(stderr, NULL);
 	}
+#ifdef HAVE_SYSLOG
 	if (log_to_syslog)
 	{
 		openlog(program, LOG_CONS | LOG_NDELAY | LOG_PID, LOG_AUTHPRIV);
 	}
+#endif /* HAVE_SYSLOG */
 }
 
 /**
-- 
2.7.4