blob: 5ebb4b25a2c7f82edc7f19bd8143ce83ac953b6e [file] [log] [blame] [edit]
/*
* Copyright (C) Tildeslash Ltd. All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3.
*
* 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 Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
*
* You must obey the GNU Affero General Public License in all respects
* for all of the code used other than OpenSSL.
*/
#include "config.h"
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "protocol.h"
/**
* Check the server for greeting code 220 and then send a QUIT and
* check for code 221. If alive return TRUE, else, return FALSE.
*
* @file
*/
int check_ftp(Socket_T socket) {
int status;
char buf[STRLEN];
ASSERT(socket);
do {
if (! socket_readln(socket, buf, STRLEN)) {
socket_setError(socket, "FTP: error receiving data -- %s\n", STRERROR);
return FALSE;
}
Str_chomp(buf);
} while(buf[3] == '-'); // Discard multi-line response
if (sscanf(buf, "%d", &status) != 1 || status != 220) {
socket_setError(socket, "FTP greeting error: %s\n", buf);
return FALSE;
}
if (socket_print(socket, "QUIT\r\n") < 0) {
socket_setError(socket, "FTP: error sending data -- %s\n", STRERROR);
return FALSE;
}
if (! socket_readln(socket, buf, STRLEN)) {
socket_setError(socket, "FTP: error receiving data -- %s\n", STRERROR);
return FALSE;
}
Str_chomp(buf);
if (sscanf(buf, "%d", &status) != 1 || status != 221) {
socket_setError(socket, "FTP quit error: %s\n", buf);
return FALSE;
}
return TRUE;
}