316 lines
7.5 KiB
C
316 lines
7.5 KiB
C
/* Copyright (c) 1998-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include <errno.h>
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#include <error.h>
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#include <libintl.h>
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#include <malloc.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdio_ext.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include "dbg_log.h"
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#include "nscd.h"
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/* Names of the databases. */
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const char *const dbnames[lastdb] =
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{
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[pwddb] = "passwd",
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[grpdb] = "group",
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[hstdb] = "hosts",
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[servdb] = "services",
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[netgrdb] = "netgroup"
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};
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static int
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find_db (const char *name)
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{
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for (int cnt = 0; cnt < lastdb; ++cnt)
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if (strcmp (name, dbnames[cnt]) == 0)
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return cnt;
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error (0, 0, _("database %s is not supported"), name);
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return -1;
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}
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int
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nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb])
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{
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FILE *fp;
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char *line, *cp, *entry, *arg1, *arg2;
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size_t len;
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int cnt;
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const unsigned int initial_error_message_count = error_message_count;
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/* Open the configuration file. */
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fp = fopen (fname, "r");
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if (fp == NULL)
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return -1;
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/* The stream is not used by more than one thread. */
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(void) __fsetlocking (fp, FSETLOCKING_BYCALLER);
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line = NULL;
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len = 0;
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do
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{
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ssize_t n = getline (&line, &len, fp);
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if (n < 0)
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break;
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if (line[n - 1] == '\n')
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line[n - 1] = '\0';
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/* Because the file format does not know any form of quoting we
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can search forward for the next '#' character and if found
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make it terminating the line. */
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*strchrnul (line, '#') = '\0';
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/* If the line is blank it is ignored. */
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if (line[0] == '\0')
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continue;
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entry = line;
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while (isspace (*entry) && *entry != '\0')
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++entry;
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cp = entry;
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while (!isspace (*cp) && *cp != '\0')
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++cp;
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arg1 = cp;
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++arg1;
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*cp = '\0';
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if (strlen (entry) == 0)
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error (0, 0, _("Parse error: %s"), line);
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while (isspace (*arg1) && *arg1 != '\0')
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++arg1;
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cp = arg1;
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while (!isspace (*cp) && *cp != '\0')
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++cp;
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arg2 = cp;
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++arg2;
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*cp = '\0';
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if (strlen (arg2) > 0)
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{
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while (isspace (*arg2) && *arg2 != '\0')
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++arg2;
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cp = arg2;
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while (!isspace (*cp) && *cp != '\0')
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++cp;
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*cp = '\0';
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}
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if (strcmp (entry, "positive-time-to-live") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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dbs[idx].postimeout = atol (arg2);
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}
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else if (strcmp (entry, "negative-time-to-live") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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dbs[idx].negtimeout = atol (arg2);
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}
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else if (strcmp (entry, "suggested-size") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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dbs[idx].suggested_module
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= atol (arg2) ?: DEFAULT_SUGGESTED_MODULE;
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}
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else if (strcmp (entry, "enable-cache") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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{
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if (strcmp (arg2, "no") == 0)
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dbs[idx].enabled = 0;
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else if (strcmp (arg2, "yes") == 0)
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dbs[idx].enabled = 1;
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}
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}
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else if (strcmp (entry, "check-files") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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{
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if (strcmp (arg2, "no") == 0)
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dbs[idx].check_file = 0;
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else if (strcmp (arg2, "yes") == 0)
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dbs[idx].check_file = 1;
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}
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}
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else if (strcmp (entry, "max-db-size") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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dbs[idx].max_db_size = atol (arg2) ?: DEFAULT_MAX_DB_SIZE;
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}
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else if (strcmp (entry, "logfile") == 0)
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set_logfile (arg1);
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else if (strcmp (entry, "debug-level") == 0)
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{
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int level = atoi (arg1);
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if (level > 0)
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debug_level = level;
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}
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else if (strcmp (entry, "threads") == 0)
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{
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if (nthreads == -1)
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nthreads = MAX (atol (arg1), lastdb);
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}
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else if (strcmp (entry, "max-threads") == 0)
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{
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max_nthreads = MAX (atol (arg1), lastdb);
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}
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else if (strcmp (entry, "server-user") == 0)
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{
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if (!arg1)
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error (0, 0, _("Must specify user name for server-user option"));
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else
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server_user = xstrdup (arg1);
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}
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else if (strcmp (entry, "stat-user") == 0)
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{
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if (arg1 == NULL)
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error (0, 0, _("Must specify user name for stat-user option"));
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else
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{
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stat_user = xstrdup (arg1);
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struct passwd *pw = getpwnam (stat_user);
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if (pw != NULL)
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stat_uid = pw->pw_uid;
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}
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}
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else if (strcmp (entry, "persistent") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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{
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if (strcmp (arg2, "no") == 0)
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dbs[idx].persistent = 0;
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else if (strcmp (arg2, "yes") == 0)
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dbs[idx].persistent = 1;
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}
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}
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else if (strcmp (entry, "shared") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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{
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if (strcmp (arg2, "no") == 0)
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dbs[idx].shared = 0;
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else if (strcmp (arg2, "yes") == 0)
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dbs[idx].shared = 1;
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}
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}
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else if (strcmp (entry, "reload-count") == 0)
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{
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if (strcasecmp (arg1, "unlimited") == 0)
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reload_count = UINT_MAX;
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else
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{
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unsigned long int count = strtoul (arg1, NULL, 0);
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if (count > UINT8_MAX - 1)
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reload_count = UINT_MAX;
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else
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reload_count = count;
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}
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}
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else if (strcmp (entry, "paranoia") == 0)
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{
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if (strcmp (arg1, "no") == 0)
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paranoia = 0;
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else if (strcmp (arg1, "yes") == 0)
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paranoia = 1;
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}
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else if (strcmp (entry, "restart-interval") == 0)
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{
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if (arg1 != NULL)
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restart_interval = atol (arg1);
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else
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error (0, 0, _("Must specify value for restart-interval option"));
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}
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else if (strcmp (entry, "auto-propagate") == 0)
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{
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int idx = find_db (arg1);
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if (idx >= 0)
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{
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if (strcmp (arg2, "no") == 0)
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dbs[idx].propagate = 0;
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else if (strcmp (arg2, "yes") == 0)
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dbs[idx].propagate = 1;
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}
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}
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else
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error (0, 0, _("Unknown option: %s %s %s"), entry, arg1, arg2);
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}
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while (!feof_unlocked (fp));
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if (paranoia)
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{
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restart_time = time (NULL) + restart_interval;
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/* Save the old current workding directory if we are in paranoia
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mode. We have to change back to it. */
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oldcwd = get_current_dir_name ();
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if (oldcwd == NULL)
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{
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error (0, 0, _("\
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cannot get current working directory: %s; disabling paranoia mode"),
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strerror (errno));
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paranoia = 0;
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}
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}
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/* Enforce sanity. */
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if (max_nthreads < nthreads)
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max_nthreads = nthreads;
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for (cnt = 0; cnt < lastdb; ++cnt)
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{
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size_t datasize = (sizeof (struct database_pers_head)
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+ roundup (dbs[cnt].suggested_module
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* sizeof (ref_t), ALIGN)
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+ (dbs[cnt].suggested_module
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* DEFAULT_DATASIZE_PER_BUCKET));
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if (datasize > dbs[cnt].max_db_size)
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{
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error (0, 0, _("maximum file size for %s database too small"),
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dbnames[cnt]);
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dbs[cnt].max_db_size = datasize;
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}
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}
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/* Free the buffer. */
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free (line);
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/* Close configuration file. */
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fclose (fp);
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return error_message_count != initial_error_message_count;
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}
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