/* Copyright (c) 1998, 2000, 2003-2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <ctype.h> #include <errno.h> #include <error.h> #include <libintl.h> #include <malloc.h> #include <pwd.h> #include <stdio.h> #include <stdio_ext.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/param.h> #include <sys/types.h> #include "dbg_log.h" #include "nscd.h" /* Wrapper functions with error checking for standard functions. */ extern char *xstrdup (const char *s); /* Names of the databases. */ const char *const dbnames[lastdb] = { [pwddb] = "passwd", [grpdb] = "group", [hstdb] = "hosts", [servdb] = "services" }; static int find_db (const char *name) { for (int cnt = 0; cnt < lastdb; ++cnt) if (strcmp (name, dbnames[cnt]) == 0) return cnt; error (0, 0, _("database %s is not supported"), name); return -1; } int nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb]) { FILE *fp; char *line, *cp, *entry, *arg1, *arg2; size_t len; int cnt; const unsigned int initial_error_message_count = error_message_count; /* Open the configuration file. */ fp = fopen (fname, "r"); if (fp == NULL) return -1; /* The stream is not used by more than one thread. */ (void) __fsetlocking (fp, FSETLOCKING_BYCALLER); line = NULL; len = 0; do { ssize_t n = getline (&line, &len, fp); if (n < 0) break; if (line[n - 1] == '\n') line[n - 1] = '\0'; /* Because the file format does not know any form of quoting we can search forward for the next '#' character and if found make it terminating the line. */ *strchrnul (line, '#') = '\0'; /* If the line is blank it is ignored. */ if (line[0] == '\0') continue; entry = line; while (isspace (*entry) && *entry != '\0') ++entry; cp = entry; while (!isspace (*cp) && *cp != '\0') ++cp; arg1 = cp; ++arg1; *cp = '\0'; if (strlen (entry) == 0) error (0, 0, _("Parse error: %s"), line); while (isspace (*arg1) && *arg1 != '\0') ++arg1; cp = arg1; while (!isspace (*cp) && *cp != '\0') ++cp; arg2 = cp; ++arg2; *cp = '\0'; if (strlen (arg2) > 0) { while (isspace (*arg2) && *arg2 != '\0') ++arg2; cp = arg2; while (!isspace (*cp) && *cp != '\0') ++cp; *cp = '\0'; } if (strcmp (entry, "positive-time-to-live") == 0) { int idx = find_db (arg1); if (idx >= 0) dbs[idx].postimeout = atol (arg2); } else if (strcmp (entry, "negative-time-to-live") == 0) { int idx = find_db (arg1); if (idx >= 0) dbs[idx].negtimeout = atol (arg2); } else if (strcmp (entry, "suggested-size") == 0) { int idx = find_db (arg1); if (idx >= 0) dbs[idx].suggested_module = atol (arg2); } else if (strcmp (entry, "enable-cache") == 0) { int idx = find_db (arg1); if (idx >= 0) { if (strcmp (arg2, "no") == 0) dbs[idx].enabled = 0; else if (strcmp (arg2, "yes") == 0) dbs[idx].enabled = 1; } } else if (strcmp (entry, "check-files") == 0) { int idx = find_db (arg1); if (idx >= 0) { if (strcmp (arg2, "no") == 0) dbs[idx].check_file = 0; else if (strcmp (arg2, "yes") == 0) dbs[idx].check_file = 1; } } else if (strcmp (entry, "max-db-size") == 0) { int idx = find_db (arg1); if (idx >= 0) dbs[idx].max_db_size = atol (arg2); } else if (strcmp (entry, "logfile") == 0) set_logfile (arg1); else if (strcmp (entry, "debug-level") == 0) { int level = atoi (arg1); if (level > 0) debug_level = level; } else if (strcmp (entry, "threads") == 0) { if (nthreads == -1) nthreads = MAX (atol (arg1), lastdb); } else if (strcmp (entry, "max-threads") == 0) { max_nthreads = MAX (atol (arg1), lastdb); } else if (strcmp (entry, "server-user") == 0) { if (!arg1) error (0, 0, _("Must specify user name for server-user option")); else server_user = xstrdup (arg1); } else if (strcmp (entry, "stat-user") == 0) { if (arg1 == NULL) error (0, 0, _("Must specify user name for stat-user option")); else { stat_user = xstrdup (arg1); struct passwd *pw = getpwnam (stat_user); if (pw != NULL) stat_uid = pw->pw_uid; } } else if (strcmp (entry, "persistent") == 0) { int idx = find_db (arg1); if (idx >= 0) { if (strcmp (arg2, "no") == 0) dbs[idx].persistent = 0; else if (strcmp (arg2, "yes") == 0) dbs[idx].persistent = 1; } } else if (strcmp (entry, "shared") == 0) { int idx = find_db (arg1); if (idx >= 0) { if (strcmp (arg2, "no") == 0) dbs[idx].shared = 0; else if (strcmp (arg2, "yes") == 0) dbs[idx].shared = 1; } } else if (strcmp (entry, "reload-count") == 0) { if (strcasecmp (arg1, "unlimited") == 0) reload_count = UINT_MAX; else { unsigned int count = strtoul (arg1, NULL, 0); if (count > UINT8_MAX - 1) reload_count = UINT_MAX; else if (count >= 0) reload_count = count; else error (0, 0, _("invalid value for 'reload-count': %u"), count); } } else if (strcmp (entry, "paranoia") == 0) { if (strcmp (arg1, "no") == 0) paranoia = 0; else if (strcmp (arg1, "yes") == 0) paranoia = 1; } else if (strcmp (entry, "restart-interval") == 0) { if (arg1 != NULL) restart_interval = atol (arg1); else error (0, 0, _("Must specify value for restart-interval option")); } else if (strcmp (entry, "auto-propagate") == 0) { int idx = find_db (arg1); if (idx >= 0) { if (strcmp (arg2, "no") == 0) dbs[idx].propagate = 0; else if (strcmp (arg2, "yes") == 0) dbs[idx].propagate = 1; } } else error (0, 0, _("Unknown option: %s %s %s"), entry, arg1, arg2); } while (!feof_unlocked (fp)); if (paranoia) { restart_time = time (NULL) + restart_interval; /* Save the old current workding directory if we are in paranoia mode. We have to change back to it. */ oldcwd = get_current_dir_name (); if (oldcwd == NULL) { error (0, 0, _("\ cannot get current working directory: %s; disabling paranoia mode"), strerror (errno)); paranoia = 0; } } /* Enforce sanity. */ if (max_nthreads < nthreads) max_nthreads = nthreads; for (cnt = 0; cnt < lastdb; ++cnt) { size_t datasize = (sizeof (struct database_pers_head) + roundup (dbs[cnt].suggested_module * sizeof (ref_t), ALIGN) + (dbs[cnt].suggested_module * DEFAULT_DATASIZE_PER_BUCKET)); if (datasize > dbs[cnt].max_db_size) { error (0, 0, _("maximum file size for %s database too small"), dbnames[cnt]); dbs[cnt].max_db_size = datasize; } } /* Free the buffer. */ free (line); /* Close configuration file. */ fclose (fp); return error_message_count != initial_error_message_count; }