nscd/nscd_conf.c

   1 /* Copyright (c) 1998, 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@suse.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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    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 <libintl.h>
  26 #include <sys/param.h>
  27 #include <sys/types.h>
  28
  29 #include "dbg_log.h"
  30 #include "nscd.h"
  31
  32 /* Names of the databases.  */
  33 const char *dbnames[lastdb] =
  34 {
  35   [pwddb] = "passwd",
  36   [grpdb] = "group",
  37   [hstdb] = "hosts"
  38 };
  39
  40 int
  41 nscd_parse_file (const char *fname, struct database dbs[lastdb])
  42 {
  43   FILE *fp;
  44   char *line, *cp, *entry, *arg1, *arg2;
  45   size_t len;
  46   int cnt;
  47
  48   /* Open the configuration file.  */
  49   fp = fopen (fname, "r");
  50   if (fp == NULL)
  51     return -1;
  52
  53   line = NULL;
  54   len = 0;
  55
  56   do
  57     {
  58       ssize_t n = getline (&line, &len, fp);
  59       if (n < 0)
  60         break;
  61       if (line[n - 1] == '\n')
  62         line[n - 1] = '\0';
  63
  64       /* Because the file format does not know any form of quoting we
  65          can search forward for the next '#' character and if found
  66          make it terminating the line.  */
  67       *strchrnul (line, '#') = '\0';
  68
  69       /* If the line is blank it is ignored.  */
  70       if (line[0] == '\0')
  71         continue;
  72
  73       entry = line;
  74       while (isspace (*entry) && *entry != '\0')
  75         ++entry;
  76       cp = entry;
  77       while (!isspace (*cp) && *cp != '\0')
  78         ++cp;
  79       arg1 = cp;
  80       ++arg1;
  81       *cp = '\0';
  82       if (strlen (entry) == 0)
  83         dbg_log (_("Parse error: %s"), line);
  84       while (isspace (*arg1) && *arg1 != '\0')
  85         ++arg1;
  86       cp = arg1;
  87       while (!isspace (*cp) && *cp != '\0')
  88         ++cp;
  89       arg2 = cp;
  90       ++arg2;
  91       *cp = '\0';
  92       if (strlen (arg2) > 0)
  93         {
  94           while (isspace (*arg2) && *arg2 != '\0')
  95             ++arg2;
  96           cp = arg2;
  97           while (!isspace (*cp) && *cp != '\0')
  98             ++cp;
  99           *cp = '\0';
 100         }
 101
 102       if (strcmp (entry, "positive-time-to-live") == 0)
 103         {
 104           for (cnt = 0; cnt < lastdb; ++cnt)
 105             if (strcmp (arg1, dbnames[cnt]) == 0)
 106               {
 107                 dbs[cnt].postimeout = atol (arg2);
 108                 break;
 109               }
 110           if (cnt == lastdb)
 111             dbg_log ("server %s is not supported\n", arg1);
 112         }
 113       else if (strcmp (entry, "negative-time-to-live") == 0)
 114         {
 115           for (cnt = 0; cnt < lastdb; ++cnt)
 116             if (strcmp (arg1, dbnames[cnt]) == 0)
 117               {
 118                 dbs[cnt].negtimeout = atol (arg2);
 119                 break;
 120               }
 121           if (cnt == lastdb)
 122             dbg_log ("server %s is not supported\n", arg1);
 123         }
 124       else if (strcmp (entry, "suggested-size") == 0)
 125         {
 126           for (cnt = 0; cnt < lastdb; ++cnt)
 127             if (strcmp (arg1, dbnames[cnt]) == 0)
 128               {
 129                 dbs[cnt].module = atol (arg2);
 130                 break;
 131               }
 132           if (cnt == lastdb)
 133             dbg_log ("server %s is not supported\n", arg1);
 134         }
 135       else if (strcmp (entry, "enable-cache") == 0)
 136         {
 137           for (cnt = 0; cnt < lastdb; ++cnt)
 138             if (strcmp (arg1, dbnames[cnt]) == 0)
 139               {
 140                 if (strcmp (arg2, "no") == 0)
 141                   dbs[cnt].enabled = 0;
 142                 else if (strcmp (arg2, "yes") == 0)
 143                   dbs[cnt].enabled = 1;
 144                 break;
 145               }
 146           if (cnt == lastdb)
 147             dbg_log ("server %s is not supported\n", arg1);
 148         }
 149       else if (strcmp (entry, "check-files") == 0)
 150         {
 151           for (cnt = 0; cnt < lastdb; ++cnt)
 152             if (strcmp (arg1, dbnames[cnt]) == 0)
 153               {
 154                 if (strcmp (arg2, "no") == 0)
 155                   dbs[cnt].check_file = 0;
 156                 else if (strcmp (arg2, "yes") == 0)
 157                   dbs[cnt].check_file = 1;
 158                 break;
 159               }
 160           if (cnt == lastdb)
 161             dbg_log ("server %s is not supported\n", arg1);
 162         }
 163       else if (strcmp (entry, "logfile") == 0)
 164         {
 165           if (!set_logfile (arg1))
 166             dbg_log (_("Could not create log file \"%s\""), arg1);
 167         }
 168       else if (strcmp (entry, "debug-level") == 0)
 169         {
 170           int level = atoi (arg1);
 171           if (level > 0)
 172             debug_level = level;
 173         }
 174       else if (strcmp (entry, "threads") == 0)
 175         {
 176           if (nthreads == -1)
 177             nthreads = MAX (atol (arg1), lastdb);
 178         }
 179       else if (strcmp (entry, "server-user") == 0)
 180         {
 181           if (!arg1)
 182             dbg_log (_("Must specify user name for server-user option"));
 183           else
 184             server_user = strdup (arg1);
 185         }
 186       else
 187         dbg_log (_("Unknown option: %s %s %s"), entry, arg1, arg2);
 188     }
 189   while (!feof (fp));
 190
 191   /* Free the buffer.  */
 192   free (line);
 193   /* Close configuration file.  */
 194   fclose (fp);
 195
 196   return 0;
 197 }