lib: fix memory leak on connect() failure
Change sockunion_log() to not use strdup(). This fixes a small memory
leak that occurs on every failed connect(), and is simpler/cleaner.
diff --git a/lib/sockunion.c b/lib/sockunion.c
index a5382a7..27a7ab0 100644
--- a/lib/sockunion.c
+++ b/lib/sockunion.c
@@ -297,27 +297,24 @@
}
/* return sockunion structure : this function should be revised. */
-static char *
-sockunion_log (union sockunion *su)
+static const char *
+sockunion_log (union sockunion *su, char *buf, size_t len)
{
- static char buf[SU_ADDRSTRLEN];
-
switch (su->sa.sa_family)
{
case AF_INET:
- snprintf (buf, SU_ADDRSTRLEN, "%s", inet_ntoa (su->sin.sin_addr));
- break;
+ return inet_ntop(AF_INET, &su->sin.sin_addr, buf, len);
+
#ifdef HAVE_IPV6
case AF_INET6:
- snprintf (buf, SU_ADDRSTRLEN, "%s",
- inet_ntop (AF_INET6, &(su->sin6.sin6_addr), buf, SU_ADDRSTRLEN));
+ return inet_ntop(AF_INET6, &(su->sin6.sin6_addr), buf, len);
break;
#endif /* HAVE_IPV6 */
+
default:
- snprintf (buf, SU_ADDRSTRLEN, "af_unknown %d ", su->sa.sa_family);
- break;
+ snprintf (buf, len, "af_unknown %d ", su->sa.sa_family);
+ return buf;
}
- return (XSTRDUP (MTYPE_TMP, buf));
}
/* sockunion_connect returns
@@ -379,8 +376,10 @@
{
if (errno != EINPROGRESS)
{
+ char str[SU_ADDRSTRLEN];
zlog_info ("can't connect to %s fd %d : %s",
- sockunion_log (&su), fd, safe_strerror (errno));
+ sockunion_log (&su, str, sizeof str),
+ fd, safe_strerror (errno));
return connect_error;
}
}