2000-03-26 00:33:07 +00:00
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/*
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conf.c -- configuration code
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Copyright (C) 1998 Emphyrio,
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2000-05-14 12:22:42 +00:00
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Copyright (C) 1998,1999,2000 Ivo Timmermans <zarq@iname.com>
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2000-03-26 00:33:07 +00:00
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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 by
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the Free Software Foundation; either 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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2000-05-15 18:28:45 +00:00
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/* Created more dynamic storage for lines read from the config file. --
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Cris van Pelt */
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2000-03-26 00:33:07 +00:00
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#include "config.h"
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#include <ctype.h>
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#include <errno.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <xalloc.h>
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#include "conf.h"
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#include "netutl.h" /* for strtoip */
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2000-05-29 21:01:26 +00:00
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#include "system.h"
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2000-03-26 00:33:07 +00:00
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config_t *config;
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int debug_lvl = 0;
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int timeout = 0; /* seconds before timeout */
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typedef struct internal_config_t {
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char *name;
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enum which_t which;
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int argtype;
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} internal_config_t;
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/*
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These are all the possible configurable values
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*/
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static internal_config_t hazahaza[] = {
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2000-05-14 12:22:42 +00:00
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{ "AllowConnect", allowconnect, TYPE_BOOL }, /* Is not used anywhere. Remove? */
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2000-03-26 00:33:07 +00:00
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{ "ConnectTo", upstreamip, TYPE_IP },
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{ "ConnectPort", upstreamport, TYPE_INT },
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{ "ListenPort", listenport, TYPE_INT },
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{ "MyOwnVPNIP", myvpnip, TYPE_IP },
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{ "MyVirtualIP", myvpnip, TYPE_IP }, /* an alias */
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{ "Passphrases", passphrasesdir, TYPE_NAME },
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{ "PingTimeout", pingtimeout, TYPE_INT },
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{ "TapDevice", tapdevice, TYPE_NAME },
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{ "KeyExpire", keyexpire, TYPE_INT },
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2000-05-16 13:09:15 +00:00
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{ "VpnMask", vpnmask, TYPE_IP },
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2000-03-26 00:33:07 +00:00
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{ NULL, 0, 0 }
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};
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/*
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Add given value to the list of configs cfg
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*/
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config_t *
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add_config_val(config_t **cfg, int argtype, char *val)
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{
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config_t *p;
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char *q;
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2000-04-26 17:42:55 +00:00
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p = (config_t*)xmalloc(sizeof(*p));
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2000-03-26 00:33:07 +00:00
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p->data.val = 0;
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switch(argtype)
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{
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case TYPE_INT:
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p->data.val = strtol(val, &q, 0);
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if(q && *q)
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p->data.val = 0;
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break;
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case TYPE_NAME:
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p->data.ptr = xmalloc(strlen(val) + 1);
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strcpy(p->data.ptr, val);
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break;
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case TYPE_IP:
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p->data.ip = strtoip(val);
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break;
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case TYPE_BOOL:
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if(!strcasecmp("yes", val))
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p->data.val = stupid_true;
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else if(!strcasecmp("no", val))
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p->data.val = stupid_false;
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else
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p->data.val = 0;
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}
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if(p->data.val)
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{
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p->next = *cfg;
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*cfg = p;
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return p;
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}
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free(p);
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return NULL;
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}
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/*
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Get variable from a section in a configfile. returns -1 on failure.
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*/
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int
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readconfig(const char *fname, FILE *fp)
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{
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2000-05-15 18:28:45 +00:00
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char *line, *temp_buf;
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2000-03-26 00:33:07 +00:00
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char *p, *q;
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int i, lineno = 0;
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config_t *cfg;
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2000-05-15 18:28:45 +00:00
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line = (char *)xmalloc(80 * sizeof(char));
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temp_buf = (char *)xmalloc(80 * sizeof(char));
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2000-03-26 00:33:07 +00:00
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for(;;)
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{
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if(fgets(line, 80, fp) == NULL)
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return 0;
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2000-05-15 18:28:45 +00:00
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while(!index(line, '\n'))
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{
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fgets(temp_buf, (strlen(line)+1) * 80, fp);
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if(!temp_buf)
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break;
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strcat(line, temp_buf);
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line = (char *)xrealloc(line, (strlen(line)+1) * sizeof(char));
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}
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2000-03-26 00:33:07 +00:00
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lineno++;
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if((p = strtok(line, "\t\n\r =")) == NULL)
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continue; /* no tokens on this line */
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if(p[0] == '#')
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continue; /* comment: ignore */
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for(i = 0; hazahaza[i].name != NULL; i++)
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if(!strcasecmp(hazahaza[i].name, p))
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break;
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if(!hazahaza[i].name)
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{
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2000-05-29 21:01:26 +00:00
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fprintf(stderr, _("%s: %d: Invalid variable name `%s'.\n"),
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2000-03-26 00:33:07 +00:00
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fname, lineno, p);
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return -1;
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}
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if(((q = strtok(NULL, "\t\n\r =")) == NULL) || q[0] == '#')
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{
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2000-05-29 21:01:26 +00:00
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fprintf(stderr, _("%s: %d: No value given for `%s'.\n"),
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2000-03-26 00:33:07 +00:00
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fname, lineno, hazahaza[i].name);
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return -1;
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}
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cfg = add_config_val(&config, hazahaza[i].argtype, q);
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if(cfg == NULL)
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{
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2000-05-29 21:01:26 +00:00
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fprintf(stderr, _("%s: %d: Invalid value `%s' for variable `%s'.\n"),
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2000-03-26 00:33:07 +00:00
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fname, lineno, q, hazahaza[i].name);
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return -1;
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}
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cfg->which = hazahaza[i].which;
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if(!config)
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config = cfg;
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}
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}
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/*
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wrapper function for readconfig
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*/
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int
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read_config_file(const char *fname)
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{
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FILE *fp;
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if((fp = fopen (fname, "r")) == NULL)
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{
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2000-05-29 21:01:26 +00:00
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fprintf(stderr, _("Could not open %s: %s\n"), fname, sys_errlist[errno]);
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2000-03-26 00:33:07 +00:00
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return 1;
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}
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if(readconfig(fname, fp))
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return -1;
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fclose (fp);
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return 0;
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}
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/*
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Look up the value of the config option type
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*/
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const config_t *
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get_config_val(which_t type)
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{
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config_t *p;
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for(p = config; p != NULL; p = p->next)
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if(p->which == type)
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return p;
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/* Not found */
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return NULL;
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}
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