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Socat only checked the first character of the host name to decide if it is an IPv4 address

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This commit is contained in:
Gerhard Rieger 2018-07-29 11:30:40 +02:00
parent 479d9cbbda
commit 42864922e7
3 changed files with 10 additions and 24 deletions

26
xio-ip.c
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@ -167,30 +167,8 @@ int xiogetaddrinfo(const char *node, const char *service,
/* the resolver functions might handle numeric forms of node names by
reverse lookup, that's not what we want.
So we detect these and handle them specially */
if (node && isdigit(node[0]&0xff)) {
#if HAVE_GETADDRINFO
hints.ai_flags |= AI_NUMERICHOST;
#endif /* HAVE_GETADDRINFO */
if (family == PF_UNSPEC) {
family = PF_INET;
#if HAVE_GETADDRINFO
} else if (family == PF_INET6) {
/* map "explicitely" into IPv6 address space; getipnodebyname() does
this with AI_V4MAPPED, but not getaddrinfo() */
if ((numnode = Malloc(strlen(node)+7+1)) == NULL) {
#if HAVE_RESOLV_H
if (res_opts0 | res_opts1) {
_res.options = (_res.options & (~res_opts0&~res_opts1) |
save_res_opts& ( res_opts0| res_opts1));
}
#endif
return STAT_NORETRY;
}
sprintf(numnode, "::ffff:%s", node);
node = numnode;
hints.ai_flags |= AI_NUMERICHOST;
#endif /* HAVE_GETADDRINFO */
}
if (0) { /* for canonical reasons */
;
#if WITH_IP6
} else if (node && node[0] == '[' && node[(nodelen=strlen(node))-1]==']') {
if ((numnode = Malloc(nodelen-1)) == NULL) {