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 /*
  23  * Copyright (c) 1994, by Sun Microsystems, Inc.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <sys/types.h>
  29 #include <sys/socket.h>
  30 #include <netinet/in.h>
  31 #include <string.h>
  32
  33 #include <netdb.h>
  34 #include "getent.h"
  35
  36 static int
  37 putservent(const struct servent *sp, FILE *fp)
  38 {
  39         char **p;
  40         int rc = 0;
  41
  42         if (sp == NULL) {
  43                 return (1);
  44         }
  45
  46         if (fprintf(fp, "%-20s %d/%s",
  47             sp->s_name, ntohs(sp->s_port), sp->s_proto) == EOF)
  48                 rc = 1;
  49         for (p = sp->s_aliases; *p != 0; p++) {
  50                 if (fprintf(fp, " %s", *p) == EOF)
  51                         rc = 1;
  52         }
  53         if (putc('\n', fp) == EOF)
  54                 rc = 1;
  55         return (rc);
  56 }
  57
  58 /*
  59  * getservbyname/addr - get entries from service database
  60  * Accepts arguments as:
  61  *      port/protocol
  62  *      port
  63  *      name/protocol
  64  *      name
  65  */
  66 int
  67 dogetserv(const char **list)
  68 {
  69         struct servent *sp;
  70         int rc = EXC_SUCCESS;
  71
  72         if (list == NULL || *list == NULL) {
  73                 while ((sp = getservent()) != NULL)
  74                         (void) putservent(sp, stdout);
  75         } else {
  76                 for (; *list != NULL; list++) {
  77                         int port;
  78                         char key[BUFSIZ];
  79                         const char *protocol = NULL;
  80                         char *cp;
  81
  82                         /* Copy string to avoiding modifying the argument */
  83                         (void) strncpy(key, *list, sizeof (key));
  84                         key[sizeof (key) - 1] = '\0';
  85                         /* Split at a '/' to extract protocol number */
  86                         if ((cp = strchr(key, '/')) != NULL) {
  87                                 *cp = '\0';
  88                                 protocol = cp + 1;
  89                         }
  90                         port = htons(atoi(key));
  91                         if (port != 0)
  92                                 sp = getservbyport(port, protocol);
  93                         else
  94                                 sp = getservbyname(key, protocol);
  95                         if (sp == NULL)
  96                                 rc = EXC_NAME_NOT_FOUND;
  97                         else
  98                                 (void) putservent(sp, stdout);
  99                 }
 100         }
 101
 102         return (rc);
 103 }