source: trunk/athena/bin/get_message/get_servername.c @ 14063

Revision 14063, 1.9 KB checked in by danw, 24 years ago (diff)
get_message, formerly in athena/bin/gms
RevLine 
[14063]1/* Copyright 1988, 1998 by the Massachusetts Institute of Technology.
2 *
3 * Permission to use, copy, modify, and distribute this
4 * software and its documentation for any purpose and without
5 * fee is hereby granted, provided that the above copyright
6 * notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting
8 * documentation, and that the name of M.I.T. not be used in
9 * advertising or publicity pertaining to distribution of the
10 * software without specific, written prior permission.
11 * M.I.T. makes no representations about the suitability of
12 * this software for any purpose.  It is provided "as is"
13 * without express or implied warranty.
14 */
15
16static const char rcsid[] = "$Id: get_servername.c,v 1.1 1999-12-08 22:06:44 danw Exp $";
17
18#include "globalmessage.h"
19#include <hesiod.h>
20#include "hesiod_err.h"
21
22Code_t get_servername(char ***ret_name)
23{
24  char **retval, **_data;       /* for copying out the hesiod data */
25  int datacnt, i;               /* number of hesiod records returned */
26
27  /* Guard against NULL arguments */
28  if ((!ret_name)) {
29    return(GMS_NULL_ARG_ERR);
30  }
31 
32  /* Fetch the list of servers from Hesiod. */
33  _data = hes_resolve(GMS_NAME_CLASS, GMS_NAME_TYPE);
34 
35  if(!_data) {
36    /* deal with hesiod error */
37    return(hesiod_error());
38  }
39
40  /* Copy the Hesiod data into stable space. */
41  for(datacnt=0; _data[datacnt]; datacnt++); /* count the data */
42
43  if (!datacnt) {
44      /* an answer, but no contents! */
45      return(HESIOD_ER_INVALID);        /* XXX */
46  }
47  retval = (char **)malloc(datacnt * sizeof(char *));
48  for(i=0; i<datacnt; i++) {
49    retval[i] = malloc(strlen(_data[i])+1);
50    if(!retval[i]) {
51      /* malloc failed... */
52      for(;--i;free(retval[i]));
53      return(GMS_MALLOC_ERR);
54    }
55    strcpy(retval[i], _data[i]);
56  }
57 
58  /* Clean up and return normally. */
59  *ret_name = retval;
60  return(0);
61}
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