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Factor out is_response_icmp.

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david
2013-07-17 04:48:00 +00:00
parent 5cc4dbca60
commit febef4cc63
1 changed files with 15 additions and 4 deletions
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19
nping/ProbeMode.cc
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@@ -1487,6 +1487,20 @@ char *ProbeMode::getBPFFilterString(){
/** Helper to check whether a received ICMP-in-IPv4 packet is related to a probe
* we might have sent. Returns non-NULL target pointer if found. Otherwise
* returns NULL. */
static NpingTarget *is_response_icmp(const unsigned char *packet, unsigned int packetlen) {
NpingTarget *trg;
trg = o.targets.findTarget(getSrcSockAddrFromIPPacket((u8*)packet, packetlen));
if (trg == NULL) {
trg = o.targets.findTarget(getDestAddrFromICMPPacket((u8*)packet, packetlen));
}
return trg;
}
/** This function handles nsock events related to raw packet modes
* TCP, UDP, ICMP and ARP (TCP_CONNEC and UDP_UNPRIV are handled by their
@@ -1651,10 +1665,7 @@ void ProbeMode::probe_nping_event_handler(nsock_pool nsp, nsock_event nse, void
}else if (proto==IPPROTO_ICMP || proto==IPPROTO_ICMPV6){
/* we look for a target based on first src addr and second the dest addr of
the packet header which is returned in the ICMP packet */
trg=o.targets.findTarget( getSrcSockAddrFromIPPacket((u8*)packet, packetlen) );
if(trg == NULL){
trg=o.targets.findTarget( getDestAddrFromICMPPacket((u8*)packet, packetlen));
}
trg = is_response_icmp(packet, packetlen);
/* In the case of ICMP we only do any printing and statistics if we
found a target - otherwise it could be a packet that is nothing