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Use FQDN_LEN instead of MAXHOSTNAMELEN for DNS name buffers

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This closes #140 (issue #140), namely "Use correct lengths 
for FQDN, not MAXHOSTNAMELEN"
This commit is contained in:
vincent
2016-07-26 14:06:22 +00:00
parent fcb94e2018
commit 32efc8b28c
9 changed files with 28 additions and 17 deletions
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7
Target.cc
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@@ -134,6 +134,7 @@
#include "nbase.h"
#include "NmapOps.h"
#include "utils.h"
#include "nmap.h"
#include "nmap_error.h"
extern NmapOps o;
@@ -429,8 +430,10 @@ const char *Target::NameIP(char *buf, size_t buflen) const {
/* This next version returns a static buffer -- so no concurrency */
const char *Target::NameIP() const {
if (!nameIPBuf) nameIPBuf = (char *) safe_malloc(MAXHOSTNAMELEN + INET6_ADDRSTRLEN);
return NameIP(nameIPBuf, MAXHOSTNAMELEN + INET6_ADDRSTRLEN);
/* Add 3 characters for the hostname and IP string, hence we allocate
(FQDN_LEN + INET6_ADDRSTRLEN + 4) octets, with octet for the null terminator */
if (!nameIPBuf) nameIPBuf = (char *) safe_malloc(FQDN_LEN + INET6_ADDRSTRLEN + 4);
return NameIP(nameIPBuf, FQDN_LEN + INET6_ADDRSTRLEN + 4);
}
/* Returns the next hop for sending packets to this host. Returns true if