usr/src/cmd/getent/dogetipnodes.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 #ident  "%Z%%M% %I%     %E% SMI"
  23
  24 /*
  25  * Copyright (c) 1994-1999, by Sun Microsystems, Inc.
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <sys/types.h>
  31 #include <sys/socket.h>
  32 #include <netinet/in.h>
  33 #include <arpa/inet.h>
  34 #include <string.h>
  35 #include <netdb.h>
  36 #include "getent.h"
  37
  38 static int
  39 puthostent(const struct hostent *hp, FILE *fp)
  40 {
  41         char **p;
  42         int rc = 0;
  43         char obuf[INET6_ADDRSTRLEN];
  44
  45         if (hp == NULL) {
  46                 return (1);
  47         }
  48
  49         for (p = hp->h_addr_list; *p != 0; p++) {
  50                 void            *addr;
  51                 struct in_addr  in4;
  52                 int             af;
  53                 const char      *res;
  54                 char **q;
  55
  56                 if (hp->h_addrtype == AF_INET6) {
  57                         if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)*p)) {
  58                                 IN6_V4MAPPED_TO_INADDR((struct in6_addr *)*p,
  59                                                         &in4);
  60                                 af = AF_INET;
  61                                 addr = &in4;
  62                         } else {
  63                                 af = AF_INET6;
  64                                 addr = *p;
  65                         }
  66                 } else {
  67                         af = AF_INET;
  68                         addr = *p;
  69                 }
  70                 res = inet_ntop(af, addr, obuf, sizeof (obuf));
  71                 if (res == 0) {
  72                         rc = 1;
  73                         continue;
  74                 }
  75                 if (fprintf(fp, "%s\t%s", res, hp->h_name) == EOF)
  76                         rc = 1;
  77                 for (q = hp->h_aliases; q && *q; q++) {
  78                         if (fprintf(fp, " %s", *q) == EOF)
  79                                 rc = 1;
  80                 }
  81                 if (putc('\n', fp) == EOF)
  82                         rc = 1;
  83         }
  84         return (rc);
  85 }
  86
  87 /*
  88  * getipnodebyname/addr - get entries from ipnodes database
  89  */
  90 int
  91 dogetipnodes(const char **list)
  92 {
  93         struct hostent *hp;
  94         int rc = EXC_SUCCESS;
  95         struct in6_addr in6;
  96         struct in_addr  in4;
  97         int             af, len;
  98         void            *addr;
  99         int err_ret;
 100
 101         if (list == NULL || *list == NULL) {
 102                 (void) fprintf(stdout,
 103                                 "Enumeration not supported on ipnodes\n");
 104         } else {
 105                 for (; *list != NULL; list++) {
 106                         if (strchr(*list, ':') != 0) {
 107                                 af = AF_INET6;
 108                                 len = sizeof (in6);
 109                                 addr = &in6;
 110                         } else {
 111                                 af = AF_INET;
 112                                 len = sizeof (in4);
 113                                 addr = &in4;
 114                         }
 115                         if (inet_pton(af, *list, addr) == 1)
 116                                 hp = getipnodebyaddr(addr, len, af, &err_ret);
 117                         else
 118                                 hp = getipnodebyname(
 119                                                 *list,
 120                                                 AF_INET6,
 121                                                 AI_V4MAPPED|AI_ALL,
 122                                                 &err_ret);
 123                         if (hp == NULL)
 124                                 rc = EXC_NAME_NOT_FOUND;
 125                         else
 126                                 (void) puthostent(hp, stdout);
 127                 }
 128         }
 129
 130         return (rc);
 131 }