/*
- * locate the originating host
+ * Given a socket, supply the name of the host at the other end.
+ *
+ * Copyright (c) 1996-2012 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*/
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <limits.h>
-#include <netdb.h>
-#include <string.h>
+#include "webcit.h"
+#include "webserver.h"
-void locate_host(char *tbuf, int client_socket)
+/*
+ * IPv4/IPv6 locate_host()
+ */
+void locate_host(StrBuf *tbuf, int client_socket)
{
- struct sockaddr_in cs;
- struct hostent *ch;
- int len;
- char *i;
- int a1, a2, a3, a4;
+ struct sockaddr_in6 clientaddr;
+ unsigned int addrlen = sizeof(clientaddr);
+ char clienthost[NI_MAXHOST] = "";
- len = sizeof(cs);
- if (getpeername(client_socket, (struct sockaddr *) &cs, &len) < 0) {
- strcpy(tbuf, "<unknown>");
- return;
- }
- if ((ch = gethostbyaddr((char *) &cs.sin_addr, sizeof(cs.sin_addr),
- AF_INET)) == NULL) {
- i = (char *) &cs.sin_addr;
- a1 = ((*i++) & 0xff);
- a2 = ((*i++) & 0xff);
- a3 = ((*i++) & 0xff);
- a4 = ((*i++) & 0xff);
- sprintf(tbuf, "%d.%d.%d.%d", a1, a2, a3, a4);
- return;
- }
- strncpy(tbuf, ch->h_name, 24);
- tbuf[24] = 0;
+ getpeername(client_socket, (struct sockaddr *)&clientaddr, &addrlen);
+ getnameinfo((struct sockaddr *)&clientaddr, addrlen, clienthost, sizeof(clienthost), NULL, 0, 0);
+ StrBufAppendBufPlain(tbuf, clienthost, -1, 0);
+ syslog(9, "Client is at %s\n", clienthost);
}