userdb/userdb2.c

   1 /*
   2 ** Copyright 1998 - 2007 Double Precision, Inc.
   3 ** See COPYING for distribution information.
   4 */
   5
   6 #if     HAVE_CONFIG_H
   7 #include        "config.h"
   8 #endif
   9 #include        "dbobj.h"
  10 #include        "userdb.h"
  11 #include        <string.h>
  12 #include        <stdlib.h>
  13 #include        <stdio.h>
  14 #include        <errno.h>
  15
  16 static const char rcsid[]="$Id: userdb2.c,v 1.6 2007/04/14 03:20:55 mrsam Exp $";
  17
  18 extern int userdb_debug_level;
  19
  20 char    *userdbshadow(const char *sh, const char *u)
  21 {
  22 struct dbobj d;
  23 char    *p,*q;
  24 size_t  l;
  25
  26         dbobj_init(&d);
  27
  28         if (dbobj_open(&d, sh, "R"))
  29         {
  30                 if (userdb_debug_level)
  31                         fprintf(stderr,
  32                                 "DEBUG: userdbshadow: unable to open %s\n", sh);
  33                 return (0);
  34         }
  35
  36         q=dbobj_fetch(&d, u, strlen(u), &l, "");
  37         dbobj_close(&d);
  38         if (!q)
  39         {
  40                 if (userdb_debug_level)
  41                         fprintf(stderr,
  42                                 "DEBUG: userdbshadow: entry not found\n");
  43                 errno=ENOENT;
  44                 return(0);
  45         }
  46
  47         p=malloc(l+1);
  48         if (!p)
  49         {
  50                 free(q);
  51                 return (0);
  52         }
  53
  54         if (l)  memcpy(p, q, l);
  55         free(q);
  56         p[l]=0;
  57         return (p);
  58 }