Mercurial > dovecot > core-2.2
diff src/lib/net.c @ 16575:eaa712530f3f
Added net_gethostbyaddr() for DNS PTR lookups.
This code assumes we have IPv6 capability. Perhaps we should just require it
everywhere already..
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Fri, 28 Jun 2013 19:48:15 +0300 |
| parents | c802c0b960e2 |
| children | dc60e46f0cb5 |
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--- a/src/lib/net.c Thu Jun 27 23:07:20 2013 +0300 +++ b/src/lib/net.c Fri Jun 28 19:48:15 2013 +0300 @@ -663,6 +663,24 @@ return 0; } +int net_gethostbyaddr(const struct ip_addr *ip, const char **name_r) +{ + union sockaddr_union so; + socklen_t addrlen = sizeof(so); + char hbuf[NI_MAXHOST]; + int ret; + + memset(&so, 0, sizeof(so)); + sin_set_ip(&so, ip); + ret = getnameinfo(&so.sa, addrlen, hbuf, sizeof(hbuf), NULL, 0, + NI_NAMEREQD); + if (ret != 0) + return ret; + + *name_r = t_strdup(hbuf); + return 0; +} + int net_getsockname(int fd, struct ip_addr *addr, unsigned int *port) { union sockaddr_union so;