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/* state.c - twoftpd routines for managing current server state
* Copyright (C) 2008 Bruce Guenter <bruce@untroubled.org>
*
* 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 02111-1307 USA
*/
#include <string.h>
#include <unistd.h>
#include "twoftpd.h"
#include "backend.h"
#include <path/path.h>
int binary_flag = 0;
str cwd = {0,0,0};
int handle_type(void)
{
if (!strcasecmp(req_param, "A") || !strcasecmp(req_param, "A N")) {
binary_flag = 0;
return respond(200, 1, "Transfer mode changed to ASCII.");
}
if (!strcasecmp(req_param, "I") || !strcasecmp(req_param, "L 8")) {
binary_flag = 1;
return respond(200, 1, "Transfer mode changed to BINARY.");
}
return respond(501, 1, "Unknown transfer type.");
}
int handle_stru(void)
{
if (!strcasecmp(req_param, "F")) return respond_ok();
return respond(504, 1, "Invalid parameter.");
}
int handle_mode(void)
{
if (!strcasecmp(req_param, "S")) return respond_ok();
return respond(504, 1, "Invalid parameter.");
}
int handle_cwd(void)
{
struct stat statbuf;
if (!qualify_validate(req_param)) return 1;
if (fullpath.len > 1) {
if (stat(fullpath.s+1, &statbuf) == -1)
return respond(550, 1, "Directory does not exist.");
if (!S_ISDIR(statbuf.st_mode))
return respond(550, 1, "Is not a directory.");
if (access(fullpath.s+1, X_OK) == -1)
return respond_permission_denied();
}
if (!str_copy(&cwd, &fullpath)) return respond_internal_error();
show_message_file(250);
return respond(250, 1, "Changed directory.");
}
int handle_pwd(void)
{
return respond_start(257, 1) &&
respond_str("\"") &&
respond_str(cwd.s) &&
respond_str("\"") &&
respond_end();
}
int handle_cdup(void)
{
req_param = "..";
return handle_cwd();
}
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