4 * Given a socket, supply the name of the host at the other end.
6 * Copyright (c) 1996-2010 by the citadel.org team
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * IPv6 enabled locate_host()
29 void locate_host(StrBuf *tbuf, int client_socket)
31 struct sockaddr_in6 clientaddr;
32 unsigned int addrlen = sizeof(clientaddr);
33 char clienthost[NI_MAXHOST];
34 char clientservice[NI_MAXSERV];
36 getpeername(client_socket, (struct sockaddr *)&clientaddr, &addrlen);
37 getnameinfo((struct sockaddr *)&clientaddr, addrlen,
38 clienthost, sizeof(clienthost),
39 clientservice, sizeof(clientservice),
43 StrBufAppendBufPlain(tbuf, clienthost, -1, 0);
49 * IPv4-only locate_host()
51 void locate_host(StrBuf *tbuf, int client_socket)
53 struct sockaddr_in cs;
60 if (getpeername(client_socket, (struct sockaddr *) &cs, &len) < 0) {
61 StrBufAppendBufPlain(tbuf, HKEY("<unknown>"), 0);
64 if ((ch = gethostbyaddr((char *) &cs.sin_addr, sizeof(cs.sin_addr),
66 i = (char *) &cs.sin_addr;
71 StrBufPrintf(tbuf, "%d.%d.%d.%d", a1, a2, a3, a4);
74 StrBufAppendBufPlain(tbuf, ch->h_name, -1, 0);