attest: Disable syslog logging if syslog() missing

diff --git a/src/libpts/plugins/imv_attestation/attest.c b/src/libpts/plugins/imv_attestation/attest.c
index 904f5761a007dd35d4ac565a8941577576225b4a..63c0023a7127f1ce21189ee9eeee8ef76a39a0d2 100644 (file)
--- a/src/libpts/plugins/imv_attestation/attest.c
+++ b/src/libpts/plugins/imv_attestation/attest.c
@@ -19,8 +19,10 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
-#include <syslog.h>
 #include <libgen.h>
+#ifdef HAVE_SYSLOG
+# include <syslog.h>
+#endif
 
 #include <library.h>
 #include <utils/debug.h>
@@ -43,9 +45,6 @@ static bool stderr_quiet = TRUE;
  */
 static void attest_dbg(debug_t group, level_t level, char *fmt, ...)
 {
-       int priority = LOG_INFO;
-       char buffer[8192];
-       char *current = buffer, *next;
        va_list args;
 
        if (level <= debug_level)
@@ -58,22 +57,30 @@ static void attest_dbg(debug_t group, level_t level, char *fmt, ...)
                        va_end(args);
                }
 
-               /* write in memory buffer first */
-               va_start(args, fmt);
-               vsnprintf(buffer, sizeof(buffer), fmt, args);
-               va_end(args);
-
-               /* do a syslog with every line */
-               while (current)
+#ifdef HAVE_SYSLOG
                {
-                       next = strchr(current, '\n');
-                       if (next)
+                       int priority = LOG_INFO;
+                       char buffer[8192];
+                       char *current = buffer, *next;
+
+                       /* write in memory buffer first */
+                       va_start(args, fmt);
+                       vsnprintf(buffer, sizeof(buffer), fmt, args);
+                       va_end(args);
+
+                       /* do a syslog with every line */
+                       while (current)
                        {
-                               *(next++) = '\0';
+                               next = strchr(current, '\n');
+                               if (next)
+                               {
+                                       *(next++) = '\0';
+                               }
+                               syslog(priority, "%s\n", current);
+                               current = next;
                        }
-                       syslog(priority, "%s\n", current);
-                       current = next;
                }
+#endif /* HAVE_SYSLOG */
        }
 }
 
@@ -91,7 +98,9 @@ static void cleanup(void)
        attest->destroy(attest);
        libpts_deinit();
        libimcv_deinit();
+#ifdef HAVE_SYSLOG
        closelog();
+#endif
 }
 
 static void do_args(int argc, char *argv[])
@@ -440,7 +449,9 @@ int main(int argc, char *argv[])
 
        /* enable attest debugging hook */
        dbg = attest_dbg;
+#ifdef HAVE_SYSLOG
        openlog("attest", 0, LOG_DEBUG);
+#endif
 
        atexit(library_deinit);
 
@@ -474,4 +485,3 @@ int main(int argc, char *argv[])
 
        exit(EXIT_SUCCESS);
 }
-