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/*
* $Id: sasl_auth.c,v 1.5 2005/05/17 16:56:25 hno Exp $
*
* SASL authenticator module for Squid.
* Copyright (C) 2002 Ian Castle <ian.castle@coldcomfortfarm.net>
*
* 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; either 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* Install instructions:
*
* This program authenticates users against using cyrus-sasl
*
* Compile this program with: gcc -Wall -o sasl_auth sasl_auth.c -lsasl
* or with SASL2: gcc -Wall -o sasl_auth sasl_auth.c -lsasl2
*
*/
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
#ifdef HAVE_SASL_SASL_H
#include <sasl/sasl.h>
#else
#include <sasl.h>
#endif
#define APP_NAME_SASL "squid_sasl_auth"
int
main()
{
char line[8192];
char *username, *password;
#if SASL_VERSION_MAJOR < 2
const char *errstr;
#endif
int rc;
sasl_conn_t *conn = NULL;
/* make standard output line buffered */
setvbuf(stdout, NULL, _IOLBF, 0);
rc = sasl_server_init( NULL, APP_NAME_SASL );
if ( rc != SASL_OK ) {
fprintf( stderr, "error %d %s\n", rc, sasl_errstring(rc, NULL, NULL ));
fprintf( stdout, "ERR\n" );
return 1;
}
#if SASL_VERSION_MAJOR < 2
rc = sasl_server_new( APP_NAME_SASL, NULL, NULL, NULL, 0, &conn );
#else
rc = sasl_server_new( APP_NAME_SASL, NULL, NULL, NULL, NULL, NULL, 0, &conn );
#endif
if ( rc != SASL_OK ) {
fprintf( stderr, "error %d %s\n", rc, sasl_errstring(rc, NULL, NULL ));
fprintf( stdout, "ERR\n" );
return 1;
}
while ( fgets( line, sizeof( line ), stdin )) {
username = &line[0];
password = strchr( line, '\n' );
if ( !password) {
fprintf( stderr, "authenticator: Unexpected input '%s'\n", line );
fprintf( stdout, "ERR\n" );
continue;
}
*password = '\0';
password = strchr ( line, ' ' );
if ( !password) {
fprintf( stderr, "authenticator: Unexpected input '%s'\n", line );
fprintf( stdout, "ERR\n" );
continue;
}
*password++ = '\0';
rfc1738_unescape(username);
rfc1738_unescape(password);
#if SASL_VERSION_MAJOR < 2
rc = sasl_checkpass(conn, username, strlen(username), password, strlen(password), &errstr);
#else
rc = sasl_checkpass(conn, username, strlen(username), password, strlen(password));
#endif
if ( rc != SASL_OK ) {
#if SASL_VERSION_MAJOR < 2
if ( errstr ) {
fprintf( stderr, "errstr %s\n", errstr );
}
if ( rc != SASL_BADAUTH ) {
fprintf( stderr, "error %d %s\n", rc, sasl_errstring(rc, NULL, NULL ));
}
#endif
fprintf( stdout, "ERR\n" );
}
else {
fprintf( stdout, "OK\n" );
}
}
sasl_dispose( &conn );
sasl_done();
return 0;
}
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