/* * * =================================== * 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); /* * 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" /* * 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); } }