X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=webcit%2Flocate_host.c;h=d015f53f54ab1e6df2e7186a0f346ef2e5e297a5;hb=HEAD;hp=bf018214c7ad748b827307be693a5319e1c1d36d;hpb=c7a28913ad7fbcd263888e0bbb24b380d3a81b9c;p=citadel.git

diff --git a/webcit/locate_host.c b/webcit/locate_host.c
index bf018214c..d3ba61707 100644
--- a/webcit/locate_host.c
+++ b/webcit/locate_host.c
@@ -1,43 +1,31 @@
 /*
- * $Id$
+ * 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.
  */
-/**
- * \defgroup Hostlookup Examine a socket and determine the name/address of the originating host.
- */
-/*@{*/
 
 #include "webcit.h"
 
-/**
- * \brief get a hostname 
- * \todo buffersize?
- * \param tbuf the returnbuffer
- * \param client_socket the sock fd where the client is connected
+
+/*
+ * IPv4/IPv6 locate_host()
  */
-void locate_host(char *tbuf, int client_socket)
+void locate_host(StrBuf *tbuf, int client_socket)
 {
-	struct sockaddr_in cs;
-	struct hostent *ch;
-	socklen_t 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;
-	}
-	safestrncpy(tbuf, ch->h_name, 64);
+	getpeername(client_socket, (struct sockaddr *)&clientaddr, &addrlen);
+	getnameinfo((struct sockaddr *)&clientaddr, addrlen, clienthost, sizeof(clienthost), NULL, 0, 0);
+        StrBufAppendBufPlain(tbuf, clienthost, -1, 0);
+	syslog(LOG_DEBUG, "Client is at %s\n", clienthost);
 }
-
-/*@}*/