usr/src/cmd/getent/dogetserv.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, 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 <string.h>
  34
  35 #include <netdb.h>
  36 #include "getent.h"
  37
  38 static int
  39 putservent(const struct servent *sp, FILE *fp)
  40 {
  41         char **p;
  42         int rc = 0;
  43
  44         if (sp == NULL) {
  45                 return (1);
  46         }
  47
  48         if (fprintf(fp, "%-20s %d/%s",
  49                     sp->s_name, ntohs(sp->s_port), sp->s_proto) == EOF)
  50                 rc = 1;
  51         for (p = sp->s_aliases; *p != 0; p++) {
  52                 if (fprintf(fp, " %s", *p) == EOF)
  53                         rc = 1;
  54         }
  55         if (putc('\n', fp) == EOF)
  56                 rc = 1;
  57         return (rc);
  58 }
  59
  60 /*
  61  * getservbyname/addr - get entries from service database
  62  * Accepts arguments as:
  63  *      port/protocol
  64  *      port
  65  *      name/protocol
  66  *      name
  67  */
  68 int
  69 dogetserv(const char **list)
  70 {
  71         struct servent *sp;
  72         int rc = EXC_SUCCESS;
  73
  74         if (list == NULL || *list == NULL) {
  75                 while ((sp = getservent()) != NULL)
  76                         (void) putservent(sp, stdout);
  77         } else {
  78                 for (; *list != NULL; list++) {
  79                         int port;
  80                         char key[BUFSIZ];
  81                         const char *protocol = NULL;
  82                         char *cp;
  83
  84                         /* Copy string to avoiding modifying the argument */
  85                         (void) strncpy(key, *list, sizeof (key));
  86                         key[sizeof (key) - 1] = NULL;
  87                         /* Split at a '/' to extract protocol number */
  88                         if ((cp = strchr(key, '/')) != NULL) {
  89                                 *cp = NULL;
  90                                 protocol = cp + 1;
  91                         }
  92                         port = htons(atoi(key));
  93                         if (port != 0)
  94                                 sp = getservbyport(port, protocol);
  95                         else
  96                                 sp = getservbyname(key, protocol);
  97                         if (sp == NULL)
  98                                 rc = EXC_NAME_NOT_FOUND;
  99                         else
 100                                 (void) putservent(sp, stdout);
 101                 }
 102         }
 103
 104         return (rc);
 105 }