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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Execute arbitrary authenticate commands
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <asterisk/lock.h>
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/module.h>
#include <asterisk/app.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
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#include <pthread.h>
static char *tdesc = "Authentication Application";
static char *app = "Authenticate";
static char *synopsis = "Authenticate a user";
static char *descrip =
" Authenticate(password[|options]): Requires a user to enter a"
"given password in order to continue execution. If the\n"
"password begins with the '/' character, it is interpreted as\n"
"a file which contains a list of valid passwords (1 per line).\n"
"an optional set of opions may be provided by concatenating any\n"
"of the following letters:\n"
" a - Set account code to the password that is entered\n"
"\n"
"Returns 0 if the user enters a valid password within three\n"
"tries, or -1 otherwise (or on hangup).\n";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int auth_exec(struct ast_channel *chan, void *data)
{
int res=0;
int retries;
struct localuser *u;
char password[256]="";
char passwd[256];
char *opts;
char *prompt;
if (!data || !strlen(data)) {
ast_log(LOG_WARNING, "Authenticate requires an argument(password)\n");
return -1;
}
LOCAL_USER_ADD(u);
if (chan->_state != AST_STATE_UP) {
res = ast_answer(chan);
if (res) {
LOCAL_USER_REMOVE(u);
return -1;
}
}
strncpy(password, data, sizeof(password) - 1);
opts=strchr(password, '|');
if (opts) {
*opts = 0;
opts++;
} else
opts = "";
/* Start asking for password */
prompt = "agent-pass";
for (retries = 0; retries < 3; retries++) {
res = ast_app_getdata(chan, prompt, passwd, sizeof(passwd) - 2, 0);
if (res < 0)
break;
res = 0;
if (password[0] == '/') {
/* Compare against a file */
FILE *f;
f = fopen(password, "r");
if (f) {
char buf[256] = "";
while(!feof(f)) {
fgets(buf, sizeof(buf), f);
if (!feof(f) && strlen(buf)) {
buf[strlen(buf) - 1] = '\0';
if (strlen(buf) && !strcmp(passwd, buf))
break;
}
}
fclose(f);
if (strlen(buf) && !strcmp(passwd, buf))
break;
} else
ast_log(LOG_WARNING, "Unable to open file '%s' for authentication: %s\n", password, strerror(errno));
} else {
/* Compare against a fixed password */
if (!strcmp(passwd, password))
break;
}
prompt="auth-incorrect";
}
if ((retries < 3) && !res) {
if (strchr(opts, 'a'))
ast_cdr_setaccount(chan, passwd);
res = ast_streamfile(chan, "auth-thankyou", chan->language);
if (!res)
res = ast_waitstream(chan, "");
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} else {
if (!res)
res = ast_streamfile(chan, "vm-goodbye", chan->language);
if (!res)
res = ast_waitstream(chan, "");
res = -1;
}
LOCAL_USER_REMOVE(u);
return res;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
return ast_unregister_application(app);
}
int load_module(void)
{
return ast_register_application(app, auth_exec, synopsis, descrip);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}