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Handle 'localhost' target name in mass_dns

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dmiller
2025-05-09 22:47:08 +00:00
parent a7ca9aba7b
commit 79d468d7a1
2 changed files with 14 additions and 0 deletions
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3
CHANGELOG
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@@ -1,5 +1,8 @@
#Nmap Changelog ($Id$); -*-text-*- #Nmap Changelog ($Id$); -*-text-*-
o Fixed an issue with the parallel forward DNS resolver: it had not been
consulting /etc/hosts, nor did it correctly handle the 'localhost' name.
Nmap 7.96 [2025-05-01] Nmap 7.96 [2025-05-01]
o Upgraded included libraries: OpenSSL 3.0.16, Lua 5.4.7, libssh2 1.11.1, o Upgraded included libraries: OpenSSL 3.0.16, Lua 5.4.7, libssh2 1.11.1,

11
nmap_dns.cc
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@@ -1088,6 +1088,17 @@ static void parse_etchosts(const char *fname) {
sockaddr_storage ia; sockaddr_storage ia;
size_t ialen; size_t ialen;
// First, load localhost names
line = "localhost";
if (0 == resolve_numeric("::1", 0, &ia, &ialen, AF_INET6)) {
host_cache.add(ia, line);
etchosts[NameRecord(line, DNS::AAAA)] = ia;
}
if (0 == resolve_numeric("127.0.0.1", 0, &ia, &ialen, AF_INET)) {
host_cache.add(ia, line);
etchosts[NameRecord(line, DNS::A)] = ia;
}
if (ifs.fail()) return; // silently is OK if (ifs.fail()) return; // silently is OK
while (std::getline(ifs, line)) { while (std::getline(ifs, line)) {