| /* Copyright (c) 1998-2016 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 as published |
| by the Free Software Foundation; version 2 of the License, or |
| (at your option) any later version. |
| |
| 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #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" |
| |
| |
| /* Names of the databases. */ |
| const char *const dbnames[lastdb] = |
| { |
| [pwddb] = "passwd", |
| [grpdb] = "group", |
| [hstdb] = "hosts", |
| [servdb] = "services", |
| [netgrdb] = "netgroup" |
| }; |
| |
| |
| 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) ?: DEFAULT_SUGGESTED_MODULE; |
| } |
| 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) ?: DEFAULT_MAX_DB_SIZE; |
| } |
| 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 long int count = strtoul (arg1, NULL, 0); |
| if (count > UINT8_MAX - 1) |
| reload_count = UINT_MAX; |
| else |
| reload_count = 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; |
| } |