mirror of
https://github.com/NLnetLabs/unbound.git
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4732f7c4d6
git-svn-id: file:///svn/unbound/trunk@279 be551aaa-1e26-0410-a405-d3ace91eadb9
188 lines
5.0 KiB
C
188 lines
5.0 KiB
C
/*
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* util/config_file.c - reads and stores the config file for unbound.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file contains functions for the config file.
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*/
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#include "config.h"
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#include "util/log.h"
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#include "util/configyyrename.h"
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#include "util/config_file.h"
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#include "util/configparser.h"
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/** global config during parsing */
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struct config_parser_state* cfg_parser = 0;
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/** lex in file */
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extern FILE* ub_c_in;
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/** lex out file */
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extern FILE* ub_c_out;
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/** the yacc lex generated parse function */
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int ub_c_parse(void);
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/** the lexer function */
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int ub_c_lex(void);
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/** wrap function */
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int ub_c_wrap(void);
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/** print error with file and line number */
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void ub_c_error(const char *message);
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struct config_file*
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config_create()
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{
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struct config_file* cfg;
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cfg = (struct config_file*)calloc(1, sizeof(struct config_file));
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if(!cfg)
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return NULL;
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/* the defaults if no config is present */
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cfg->verbosity = 1;
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cfg->num_threads = 1;
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cfg->port = UNBOUND_DNS_PORT;
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cfg->do_ip4 = 1;
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cfg->do_ip6 = 1;
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cfg->do_udp = 1;
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cfg->do_tcp = 1;
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cfg->outgoing_base_port = cfg->port + 1000;
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cfg->outgoing_num_ports = 16;
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cfg->msg_cache_size = 4 * 1024 * 1024;
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cfg->msg_cache_slabs = 4;
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cfg->num_queries_per_thread = 1024;
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cfg->rrset_cache_size = 4 * 1024 * 1024;
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cfg->rrset_cache_slabs = 4;
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if(!(cfg->fwd_address = strdup(""))) goto error_exit;
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if(!(cfg->username = strdup(""))) goto error_exit;
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if(!(cfg->chrootdir = strdup(""))) goto error_exit;
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if(!(cfg->directory = strdup("/etc/unbound"))) goto error_exit;
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if(!(cfg->logfile = strdup(""))) goto error_exit;
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if(!(cfg->pidfile = strdup("unbound.pid"))) goto error_exit;
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cfg->fwd_port = UNBOUND_DNS_PORT;
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cfg->do_daemonize = 1;
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cfg->num_ifs = 0;
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cfg->ifs = NULL;
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return cfg;
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error_exit:
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config_delete(cfg);
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return NULL;
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}
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/** initialize the global cfg_parser object. */
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static void
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create_cfg_parser(struct config_file* cfg, char* filename)
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{
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static struct config_parser_state st;
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cfg_parser = &st;
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cfg_parser->filename = filename;
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cfg_parser->line = 1;
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cfg_parser->errors = 0;
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cfg_parser->cfg = cfg;
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cfg_parser->server_settings_seen = 0;
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}
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int
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config_read(struct config_file* cfg, const char* filename)
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{
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FILE *in;
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if(!filename)
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return 1;
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in = fopen(filename, "r");
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if(!in) {
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log_err("Could not open %s: %s", filename, strerror(errno));
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return 0;
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}
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create_cfg_parser(cfg, (char*)filename);
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ub_c_in = in;
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ub_c_parse();
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fclose(in);
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if(cfg_parser->errors != 0) {
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fprintf(stderr, "read %s failed: %d errors in configuration file\n",
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cfg_parser->filename, cfg_parser->errors);
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return 0;
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}
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return 1;
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}
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void
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config_delete(struct config_file* cfg)
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{
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if(!cfg) return;
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free(cfg->fwd_address);
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free(cfg->username);
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free(cfg->chrootdir);
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free(cfg->directory);
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free(cfg->logfile);
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free(cfg->pidfile);
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if(cfg->ifs) {
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int i;
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for(i=0; i<cfg->num_ifs; i++)
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free(cfg->ifs[i]);
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free(cfg->ifs);
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}
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free(cfg);
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}
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/** print error with file and line number */
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void ub_c_error_va_list(const char *fmt, va_list args)
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{
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cfg_parser->errors++;
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fprintf(stderr, "%s:%d: error: ", cfg_parser->filename,
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cfg_parser->line);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\n");
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}
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/** print error with file and line number */
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void ub_c_error_msg(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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ub_c_error_va_list(fmt, args);
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va_end(args);
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}
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void ub_c_error(const char *str)
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{
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cfg_parser->errors++;
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fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename,
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cfg_parser->line, str);
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}
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int ub_c_wrap()
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{
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return 1;
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}
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