From 8ce130c4c828b9d13d429f22160f992b9c1d45cd Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 14 Jan 2010 12:24:15 -0500 Subject: [PATCH] statd: Support IPv6 in sm_mon_1_svc() Replace deprecated gethostbyname(3) and gethostbyaddr(3) calls in monitor.c, and address a couple of memory leaks. Signed-off-by: Chuck Lever --- utils/statd/monitor.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/utils/statd/monitor.c b/utils/statd/monitor.c index fb32196..11afe08 100644 --- a/utils/statd/monitor.c +++ b/utils/statd/monitor.c @@ -71,8 +71,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp) .sin_family = AF_INET, .sin_addr.s_addr = htonl(INADDR_LOOPBACK), }; - char *dnsname; - struct hostent *hostinfo = NULL; + char *dnsname = NULL; xlog(D_CALL, "Received SM_MON for %s from %s", mon_name, my_name); @@ -114,9 +113,6 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp) "or starting '.': %s", mon_name); xlog(L_ERROR, "POSSIBLE SPOOF/ATTACK ATTEMPT!"); goto failure; - } else if ((hostinfo = gethostbyname(mon_name)) == NULL) { - xlog_warn("gethostbyname error for %s", mon_name); - goto failure; } /* my_name must not have white space */ @@ -129,15 +125,13 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp) * Now choose a hostname to use for matching. We cannot * really trust much in the incoming NOTIFY, so to make * sure that multi-homed hosts work nicely, we get an - * FQDN now, and use that for matching + * FQDN now, and use that for matching. */ - hostinfo = gethostbyaddr(hostinfo->h_addr, - hostinfo->h_length, - hostinfo->h_addrtype); - if (hostinfo) - dnsname = xstrdup(hostinfo->h_name); - else - dnsname = xstrdup(my_name); + dnsname = statd_canonical_name(mon_name); + if (dnsname == NULL) { + xlog(L_WARNING, "No canonical hostname found for %s", mon_name); + goto failure; + } /* Now check to see if this is a duplicate, and warn if so. * I will also return STAT_FAIL. (I *think* this is how I should @@ -163,6 +157,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp) mon_name, my_name); /* But we'll let you pass anyway. */ + free(dnsname); goto success; } clnt = NL_NEXT(clnt); @@ -173,6 +168,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp) * doesn't fail. (I should probably fix this assumption.) */ if (!(clnt = nlist_new(my_name, mon_name, 0))) { + free(dnsname); xlog_warn("out of memory"); goto failure; } -- 2.39.2