diff options
Diffstat (limited to 'usr.sbin/portmap/from_local.c')
| -rw-r--r-- | usr.sbin/portmap/from_local.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/usr.sbin/portmap/from_local.c b/usr.sbin/portmap/from_local.c deleted file mode 100644 index 9886f12..0000000 --- a/usr.sbin/portmap/from_local.c +++ /dev/null @@ -1,233 +0,0 @@ - /* - * Check if an address belongs to the local system. Adapted from: - * - * @(#)pmap_svc.c 1.32 91/03/11 Copyright 1984,1990 Sun Microsystems, Inc. - * @(#)get_myaddress.c 2.1 88/07/29 4.0 RPCSRC. - */ - -/* - * Sun RPC is a product of Sun Microsystems, Inc. and is provided for - * unrestricted use provided that this legend is included on all tape - * media and as a part of the software program in whole or part. Users - * may copy or modify Sun RPC without charge, but are not authorized - * to license or distribute it to anyone else except as part of a product or - * program developed by the user or with the express written consent of - * Sun Microsystems, Inc. - * - * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE - * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR - * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. - * - * Sun RPC is provided with no support and without any obligation on the - * part of Sun Microsystems, Inc. to assist in its use, correction, - * modification or enhancement. - * - * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE - * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC - * OR ANY PART THEREOF. - * - * In no event will Sun Microsystems, Inc. be liable for any lost revenue - * or profits or other special, indirect and consequential damages, even if - * Sun has been advised of the possibility of such damages. - * - * Sun Microsystems, Inc. - * 2550 Garcia Avenue - * Mountain View, California 94043 - */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#) from_local.c 1.2 93/11/16 21:50:02"; -#endif -static const char rcsid[] = - "$FreeBSD$"; -#endif - -#ifdef TEST -#undef perror -#endif - -#include <sys/types.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/sysctl.h> -#include <sys/time.h> - -#include <netdb.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <syslog.h> -#include <unistd.h> - -#include <net/if.h> -#include <net/if_dl.h> -#include <net/route.h> -#include <netinet/in.h> - -#include "pmap_check.h" - -#ifndef TRUE -#define TRUE 1 -#define FALSE 0 -#endif - -#define ROUNDUP(x) ((x) ? (1 + (((x) - 1) | (sizeof(long) - 1))) : sizeof(long)) - -/* How many interfaces could there be on a computer? */ - -#define ESTIMATED_LOCAL 20 -static int num_local = -1; -static struct in_addr *addrs; - -static void -rtiparse(struct ifa_msghdr *ifam, struct rt_addrinfo *ai) -{ - char *wp; - int rtax; - - wp = (char *)(ifam + 1); - - ai->rti_addrs = ifam->ifam_addrs; - for (rtax = 0; rtax < sizeof ai->rti_info / sizeof *ai->rti_info; rtax++) - if (ifam->ifam_addrs & (1 << rtax)) { - ai->rti_info[rtax] = (struct sockaddr *)wp; - wp += ROUNDUP(ai->rti_info[rtax]->sa_len); - } else - ai->rti_info[rtax] = NULL; -} - -/* find_local - find all IP addresses for this host */ - -static int -find_local() -{ - int mib[6], n, s, alloced; - size_t needed; - char *buf, *end, *ptr; - struct if_msghdr *ifm; - struct ifa_msghdr *ifam; - struct rt_addrinfo ai; - struct ifreq ifr; - struct sockaddr_dl *dl; - - mib[0] = CTL_NET; - mib[1] = PF_ROUTE; - mib[4] = NET_RT_IFLIST; - mib[2] = mib[3] = mib[5] = 0; - - if ((s = socket(PF_INET, SOCK_DGRAM, 0)) < 0) { - perror("socket"); - return (0); - } - if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { - close(s); - perror("sysctl(NET_RT_IFLIST)"); - return 0; - } - if ((buf = (char *)malloc(needed)) == NULL) { - close(s); - perror("malloc"); - return 0; - } - if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { - close(s); - free(buf); - perror("sysctl(NET_RT_IFLIST)(after malloc)"); - return 0; - } - - if (addrs) { - free(addrs); - addrs = NULL; - } - num_local = 0; - alloced = 0; - end = buf + needed; - - for (ptr = buf; ptr < end; ptr += ifm->ifm_msglen) { - ifm = (struct if_msghdr *)ptr; - dl = (struct sockaddr_dl *)(ifm + 1); - - if (ifm->ifm_index != dl->sdl_index || dl->sdl_nlen == 0) - /* Skip over remaining ifa_msghdrs */ - continue; - - n = dl->sdl_nlen > sizeof ifr.ifr_name ? - sizeof ifr.ifr_name : dl->sdl_nlen; - strncpy(ifr.ifr_name, dl->sdl_data, n); - if (n < sizeof ifr.ifr_name) - ifr.ifr_name[n] = '\0'; - - /* we only want the first address from each interface */ - if (ioctl(s, SIOCGIFFLAGS, &ifr) < 0) - fprintf(stderr, "%.*s: SIOCGIFFLAGS: %s\n", n, ifr.ifr_name, - strerror(errno)); - else if (ifr.ifr_flags & IFF_UP) { /* active interface */ - ifam = (struct ifa_msghdr *)(ptr + ifm->ifm_msglen); - while ((char *)ifam < end && ifam->ifam_type == RTM_NEWADDR) { - rtiparse(ifam, &ai); - - if (ai.rti_info[RTAX_IFA] != NULL && - ai.rti_info[RTAX_IFA]->sa_family == AF_INET) { - if (alloced < num_local + 1) { - alloced += ESTIMATED_LOCAL; - addrs = (struct in_addr *)realloc(addrs, alloced * sizeof addrs[0]); - if (addrs == NULL) { - perror("malloc/realloc"); - num_local = 0; - break; - } - } - addrs[num_local++] = ((struct sockaddr_in *) - ai.rti_info[RTAX_IFA])->sin_addr; - - } - ifam = (struct ifa_msghdr *)((char *)ifam + ifam->ifam_msglen); - } - } - } - free(buf); - close(s); - - return num_local; -} - -/* from_local - determine whether request comes from the local system */ - -int -from_local(addr) - struct sockaddr_in *addr; -{ - int i; - - if (num_local == -1 && find_local() == 0) - syslog(LOG_ERR, "cannot find any active local network interfaces"); - - for (i = 0; i < num_local; i++) { - if (memcmp((char *) &(addr->sin_addr), (char *) &(addrs[i]), - sizeof(struct in_addr)) == 0) - return (TRUE); - } - return (FALSE); -} - -#ifdef TEST - -int -main(argc, argv) - int argc; - char **argv; -{ - char *inet_ntoa(); - int i; - - find_local(); - for (i = 0; i < num_local; i++) - printf("%s\n", inet_ntoa(addrs[i])); - - return 0; -} - -#endif |
