nscd/nscd_conf.c

   1 /* Copyright (c) 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA. */
  19
  20 #include <ctype.h>
  21 #include <malloc.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <sys/param.h>
  26 #include <sys/types.h>
  27
  28 #include "dbg_log.h"
  29 #include "nscd.h"
  30
  31 /* Names of the databases.  */
  32 const char *dbnames[lastdb] =
  33 {
  34   [pwddb] = "passwd",
  35   [grpdb] = "group",
  36   [hstdb] = "hosts"
  37 };
  38
  39 int
  40 nscd_parse_file (const char *fname, struct database dbs[lastdb])
  41 {
  42   FILE *fp;
  43   char *line, *cp, *entry, *arg1, *arg2;
  44   size_t len;
  45   int cnt;
  46
  47   /* Open the configuration file.  */
  48   fp = fopen (fname, "r");
  49   if (fp == NULL)
  50     return -1;
  51
  52   line = NULL;
  53   len = 0;
  54
  55   do
  56     {
  57       ssize_t n = getline (&line, &len, fp);
  58       if (n < 0)
  59         break;
  60       if (line[n - 1] == '\n')
  61         line[n - 1] = '\0';
  62
  63       /* Because the file format does not know any form of quoting we
  64          can search forward for the next '#' character and if found
  65          make it terminating the line.  */
  66       cp = strchr (line, '#');
  67       if (cp != NULL)
  68         *cp = '\0';
  69
  70       /* If the line is blank it is ignored.  */
  71       if (line[0] == '\0')
  72         continue;
  73
  74       entry = line;
  75       while (isspace (*entry) && *entry != '\0')
  76         ++entry;
  77       cp = entry;
  78       while (!isspace (*cp) && *cp != '\0')
  79         ++cp;
  80       arg1 = cp;
  81       ++arg1;
  82       *cp = '\0';
  83       if (strlen (entry) == 0)
  84         dbg_log (_("Parse error: %s"), line);
  85       while (isspace (*arg1) && *arg1 != '\0')
  86         ++arg1;
  87       cp = arg1;
  88       while (!isspace (*cp) && *cp != '\0')
  89         ++cp;
  90       arg2 = cp;
  91       ++arg2;
  92       *cp = '\0';
  93       if (strlen (arg2) > 0)
  94         {
  95           while (isspace (*arg2) && *arg2 != '\0')
  96             ++arg2;
  97           cp = arg2;
  98           while (!isspace (*cp) && *cp != '\0')
  99             ++cp;
 100           *cp = '\0';
 101         }
 102
 103       if (strcmp (entry, "positive-time-to-live") == 0)
 104         {
 105           for (cnt = 0; cnt < lastdb; ++cnt)
 106             if (strcmp (arg1, dbnames[cnt]) == 0)
 107               {
 108                 dbs[cnt].postimeout = atol (arg2);
 109                 break;
 110               }
 111           if (cnt == lastdb)
 112             dbg_log ("server %s is not supported\n", arg1);
 113         }
 114       else if (strcmp (entry, "negative-time-to-live") == 0)
 115         {
 116           for (cnt = 0; cnt < lastdb; ++cnt)
 117             if (strcmp (arg1, dbnames[cnt]) == 0)
 118               {
 119                 dbs[cnt].negtimeout = atol (arg2);
 120                 break;
 121               }
 122           if (cnt == lastdb)
 123             dbg_log ("server %s is not supported\n", arg1);
 124         }
 125       else if (strcmp (entry, "suggested-size") == 0)
 126         {
 127           for (cnt = 0; cnt < lastdb; ++cnt)
 128             if (strcmp (arg1, dbnames[cnt]) == 0)
 129               {
 130                 dbs[cnt].module = atol (arg2);
 131                 break;
 132               }
 133           if (cnt == lastdb)
 134             dbg_log ("server %s is not supported\n", arg1);
 135         }
 136       else if (strcmp (entry, "enable-cache") == 0)
 137         {
 138           for (cnt = 0; cnt < lastdb; ++cnt)
 139             if (strcmp (arg1, dbnames[cnt]) == 0)
 140               {
 141                 if (strcmp (arg2, "no") == 0)
 142                   dbs[cnt].enabled = 0;
 143                 else if (strcmp (arg2, "yes") == 0)
 144                   dbs[cnt].enabled = 1;
 145                 break;
 146               }
 147           if (cnt == lastdb)
 148             dbg_log ("server %s is not supported\n", arg1);
 149         }
 150       else if (strcmp (entry, "check-files") == 0)
 151         {
 152           for (cnt = 0; cnt < lastdb; ++cnt)
 153             if (strcmp (arg1, dbnames[cnt]) == 0)
 154               {
 155                 if (strcmp (arg2, "no") == 0)
 156                   dbs[cnt].check_file = 0;
 157                 else if (strcmp (arg2, "yes") == 0)
 158                   dbs[cnt].check_file = 1;
 159                 break;
 160               }
 161           if (cnt == lastdb)
 162             dbg_log ("server %s is not supported\n", arg1);
 163         }
 164       else if (strcmp (entry, "logfile") == 0)
 165         {
 166           if (!set_logfile (arg1))
 167             dbg_log (_("Could not create log file \"%s\""), arg1);
 168         }
 169       else if (strcmp (entry, "debug-level") == 0)
 170         {
 171           int level = atoi (arg1);
 172           if (level > 0)
 173             debug_level = level;
 174         }
 175       else if (strcmp (entry, "threads") == 0)
 176         {
 177           if (nthreads == -1)
 178             nthreads = MAX (atol (arg1), lastdb);
 179         }
 180       else
 181         dbg_log (_("Unknown option: %s %s %s"), entry, arg1, arg2);
 182     }
 183   while (!feof (fp));
 184
 185   /* Free the buffer.  */
 186   free (line);
 187   /* Close configuration file.  */
 188   fclose (fp);
 189
 190   return 0;
 191 }