1 files changed, 168 insertions, 0 deletions
diff --git a/lib/libatm/ip_addr.c b/lib/libatm/ip_addr.c
new file mode 100644
index 0000000..81b9c77
--- /dev/null
+++ b/lib/libatm/ip_addr.c
@@ -0,0 +1,168 @@
+/*
+ *
+ * ===================================
+ * HARP  |  Host ATM Research Platform
+ * ===================================
+ *
+ *
+ * This Host ATM Research Platform ("HARP") file (the "Software") is
+ * made available by Network Computing Services, Inc. ("NetworkCS")
+ * "AS IS".  NetworkCS does not provide maintenance, improvements or
+ * support of any kind.
+ *
+ * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
+ * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
+ * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
+ * In no event shall NetworkCS be responsible for any damages, including
+ * but not limited to consequential damages, arising from or relating to
+ * any use of the Software or related support.
+ *
+ * Copyright 1994-1998 Network Computing Services, Inc.
+ *
+ * Copies of this Software may be made, however, the above copyright
+ * notice must be reproduced on all copies.
+ *
+ *	@(#) $FreeBSD$
+ *
+ */
+
+/*
+ * User Space Library Functions
+ * ----------------------------
+ *
+ * IP address utilities
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netatm/port.h>
+#include <netatm/atm.h>
+#include <netatm/atm_if.h>
+#include <netatm/atm_sap.h>
+#include <netatm/atm_sys.h>
+#include <netatm/atm_ioctl.h>
+
+#include <netdb.h>
+#include <string.h>
+
+#include "libatm.h"
+
+#ifndef lint
+__RCSID("@(#) $FreeBSD$");
+#endif
+
+
+/*
+ * Get IP address
+ *
+ * Return an IP address in a socket address structure, given a character
+ * string with a domain name or a dotted decimal number.
+ * 
+ * Arguments:
+ *	p	pointer to a host name or IP address
+ *
+ * Returns:
+ *	null			error was encountered
+ *	struct sockaddr_in *	a pointer to a socket address with the
+ *				requested IP address
+ *
+ */
+struct sockaddr_in *
+get_ip_addr(p)
+	char	*p;
+{
+	struct hostent			*ip_host;
+	static struct sockaddr_in	sin;
+
+	/*
+	 * Get IP address of specified host name
+	 */
+	UM_ZERO(&sin, sizeof(sin));
+	sin.sin_family = AF_INET;
+	if (p[0] >= '0' && p[0] <= '9') {
+		/*
+		 * IP address is in dotted decimal format
+		 */
+		if ((sin.sin_addr.s_addr = inet_addr(p)) == -1) {
+			return((struct sockaddr_in *)0);
+		}
+	} else {
+		/*
+		 * Host name is in domain name system format
+		 */
+		ip_host = gethostbyname(p);
+		if (!ip_host ||
+				ip_host->h_addrtype != AF_INET) {
+			return((struct sockaddr_in *)0);
+		}
+		sin.sin_addr.s_addr = *(u_long *)ip_host->h_addr_list[0];
+	}
+	return(&sin);
+}
+
+
+/*
+ * Format an IP address
+ *
+ * Return a text-formatted string with an IP address and domain name
+ * given a sockaddr_in with an IP address.
+ * 
+ * Arguments:
+ *	p	pointer to sockaddr_in with an IP address
+ *
+ * Returns:
+ *	char *	pointer to a text-formatted string
+ *
+ */
+char *
+format_ip_addr(addr)
+	struct in_addr	*addr;
+{
+	static char	host_name[128];
+	char		*ip_num;
+	struct hostent	*ip_host;
+
+	/*
+	 * Initialize
+	 */
+	UM_ZERO(host_name, sizeof(host_name));
+
+	/*
+	 * Check for a zero address
+	 */
+	if (!addr || addr->s_addr == 0) {
+		return("-");
+	}
+
+	/*
+	 * Get address in dotted decimal format
+	 */
+	ip_num = inet_ntoa(*addr);
+
+	/*
+	 * Look up name in DNS
+	 */
+	ip_host = gethostbyaddr((char *)addr, sizeof(addr), AF_INET);
+	if (ip_host && ip_host->h_name &&
+			strlen(ip_host->h_name)) {
+		/*
+		 * Return host name followed by dotted decimal address
+		 */
+		strcpy(host_name, ip_host->h_name);
+		strcat(host_name, " (");
+		strcat(host_name, ip_num);
+		strcat(host_name, ")");
+		return(host_name);
+	} else {
+		/*
+		 * No host name -- just return dotted decimal address
+		 */
+		return(ip_num);
+	}
+}