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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License, Version 1.0 only
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6 * (the "License"). You may not use this file except in compliance
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7 * with the License.
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8 *
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9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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10 * or http://www.opensolaris.org/os/licensing.
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11 * See the License for the specific language governing permissions
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12 * and limitations under the License.
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13 *
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14 * When distributing Covered Code, include this CDDL HEADER in each
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15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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16 * If applicable, add the following below this CDDL HEADER, with the
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17 * fields enclosed by brackets "[]" replaced with your own identifying
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18 * information: Portions Copyright [yyyy] [name of copyright owner]
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19 *
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20 * CDDL HEADER END
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21 */
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22 #ident "@(#)dogetnetmask.c 1.5 05/06/08 SMI"
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23
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24 /*
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25 * Copyright (c) 1994-1996, by Sun Microsystems, Inc.
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26 * All rights reserved.
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27 */
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28
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31 #include <string.h>
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32 #include <sys/types.h>
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33 #include <sys/socket.h>
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34 #include <netinet/in.h>
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35 #include <arpa/inet.h>
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36 #include <netdb.h>
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37 #include "getent.h"
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38
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39 extern char *inet_nettoa(struct in_addr in);
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40
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41 static int
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42 putnetmask(const struct in_addr key, const struct in_addr netmask, FILE *fp)
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43 {
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44 char **p;
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45 int rc = 0;
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46 struct in_addr net;
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47
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48 net.s_addr = ntohl(key.s_addr);
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49 if (fprintf(fp, "%-20s", inet_nettoa(net)) == EOF)
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50 rc = 1;
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51 if (fprintf(fp, " %s", inet_ntoa(netmask)) == EOF)
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52 rc = 1;
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53 if (putc('\n', fp) == EOF)
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54 rc = 1;
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55 return (rc);
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56 }
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57
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58 /*
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59 * getnetmaskbyaddr - get entries from network database
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60 */
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61 int
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62 dogetnetmask(const char **list)
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63 {
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64 int rc = EXC_SUCCESS;
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65 struct in_addr addr, netmask;
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66
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67 if (list == NULL || *list == NULL)
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68 return (EXC_ENUM_NOT_SUPPORTED);
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69
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70 for (; *list != NULL; list++) {
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71 addr.s_addr = htonl(inet_network(*list));
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72 if (addr.s_addr != -1) {
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73 if (getnetmaskbyaddr(addr, &netmask) == 0) {
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74 (void) putnetmask(addr, netmask, stdout);
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75 } else {
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76 rc = EXC_NAME_NOT_FOUND;
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77 }
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78 } else {
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79 rc = EXC_NAME_NOT_FOUND;
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80 }
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81 }
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82
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83 return (rc);
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84 }
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