From 779382eb324ad0c39f8c4d10a47a813b490ab82c Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Tue, 25 Mar 2008 20:17:36 -0700 Subject: [NETFILTER]: nf_conntrack_sip: use strlen/strcmp Replace sizeof/memcmp by strlen/strcmp. Use case-insensitive comparison for SIP methods and the SIP/2.0 string, as specified in RFC 3261. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/nf_conntrack_sip.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'net/netfilter/nf_conntrack_sip.c') diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c index 38e1e7a05334..cf19a7082a75 100644 --- a/net/netfilter/nf_conntrack_sip.c +++ b/net/netfilter/nf_conntrack_sip.c @@ -434,15 +434,15 @@ static int sip_help(struct sk_buff *skb, } datalen = skb->len - dataoff; - if (datalen < sizeof("SIP/2.0 200") - 1) + if (datalen < strlen("SIP/2.0 200")) goto out; /* RTP info only in some SDP pkts */ - if (memcmp(dptr, "INVITE", sizeof("INVITE") - 1) != 0 && - memcmp(dptr, "UPDATE", sizeof("UPDATE") - 1) != 0 && - memcmp(dptr, "SIP/2.0 180", sizeof("SIP/2.0 180") - 1) != 0 && - memcmp(dptr, "SIP/2.0 183", sizeof("SIP/2.0 183") - 1) != 0 && - memcmp(dptr, "SIP/2.0 200", sizeof("SIP/2.0 200") - 1) != 0) { + if (strnicmp(dptr, "INVITE", strlen("INVITE")) != 0 && + strnicmp(dptr, "UPDATE", strlen("UPDATE")) != 0 && + strnicmp(dptr, "SIP/2.0 180", strlen("SIP/2.0 180")) != 0 && + strnicmp(dptr, "SIP/2.0 183", strlen("SIP/2.0 183")) != 0 && + strnicmp(dptr, "SIP/2.0 200", strlen("SIP/2.0 200")) != 0) { goto out; } /* Get address and port from SDP packet. */ -- cgit v1.2.3