3 * ===================================
4 * HARP | Host ATM Research Platform
5 * ===================================
8 * This Host ATM Research Platform ("HARP") file (the "Software") is
9 * made available by Network Computing Services, Inc. ("NetworkCS")
10 * "AS IS". NetworkCS does not provide maintenance, improvements or
11 * support of any kind.
13 * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
14 * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
15 * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
16 * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
17 * In no event shall NetworkCS be responsible for any damages, including
18 * but not limited to consequential damages, arising from or relating to
19 * any use of the Software or related support.
21 * Copyright 1994-1998 Network Computing Services, Inc.
23 * Copies of this Software may be made, however, the above copyright
24 * notice must be reproduced on all copies.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * User Space Library Functions
32 * ----------------------------
34 * IP address utilities
38 #include <sys/types.h>
39 #include <sys/param.h>
40 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
45 #include <netatm/port.h>
46 #include <netatm/atm.h>
47 #include <netatm/atm_if.h>
48 #include <netatm/atm_sap.h>
49 #include <netatm/atm_sys.h>
50 #include <netatm/atm_ioctl.h>
60 * Return an IP address in a socket address structure, given a character
61 * string with a domain name or a dotted decimal number.
64 * p pointer to a host name or IP address
67 * null error was encountered
68 * struct sockaddr_in * a pointer to a socket address with the
69 * requested IP address
73 get_ip_addr(const char *p)
75 struct hostent *ip_host;
76 static struct sockaddr_in s;
79 * Get IP address of specified host name
82 s.sin_family = AF_INET;
83 if (p[0] >= '0' && p[0] <= '9') {
85 * IP address is in dotted decimal format
87 if ((s.sin_addr.s_addr = inet_addr(p)) == INADDR_NONE) {
88 return((struct sockaddr_in *)0);
92 * Host name is in domain name system format
94 ip_host = gethostbyname(p);
96 ip_host->h_addrtype != AF_INET) {
97 return((struct sockaddr_in *)0);
99 memcpy(&s.sin_addr.s_addr, ip_host->h_addr_list[0],
100 sizeof(s.sin_addr.s_addr));
107 * Format an IP address
109 * Return a text-formatted string with an IP address and domain name
110 * given a sockaddr_in with an IP address.
113 * addr pointer to sockaddr_in with an IP address
116 * char * pointer to a text-formatted string
120 format_ip_addr(const struct in_addr *addr)
122 static char host_name[MAXHOSTNAMELEN + 18];
124 struct hostent *ip_host;
129 bzero(host_name, sizeof(host_name));
132 * Check for a zero address
134 if (!addr || addr->s_addr == 0) {
139 * Get address in dotted decimal format
141 ip_num = inet_ntoa(*addr);
144 * Look up name in DNS
146 ip_host = gethostbyaddr((const char *)addr, sizeof(addr), AF_INET);
147 if (ip_host && ip_host->h_name && strlen(ip_host->h_name)) {
149 * Return host name followed by dotted decimal address
151 snprintf(host_name, sizeof(host_name), "%s (%s)",
152 ip_host->h_name, ip_num);
156 * No host name -- just return dotted decimal address