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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "ClientFile.hxx"
#include "Client.hxx"
#include "protocol/Ack.hxx"
#include "fs/Path.hxx"
#include "fs/FileSystem.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>
bool
client_allow_file(const Client *client, const Path &path_fs,
Error &error)
{
#ifdef WIN32
(void)client;
(void)path_fs;
error.Set(ack_domain, ACK_ERROR_PERMISSION, "Access denied");
return false;
#else
const int uid = client_get_uid(client);
if (uid >= 0 && (uid_t)uid == geteuid())
/* always allow access if user runs his own MPD
instance */
return true;
if (uid <= 0) {
/* unauthenticated client */
error.Set(ack_domain, ACK_ERROR_PERMISSION, "Access denied");
return false;
}
struct stat st;
if (!StatFile(path_fs, st)) {
error.SetErrno();
return false;
}
if (st.st_uid != (uid_t)uid && (st.st_mode & 0444) != 0444) {
/* client is not owner */
error.Set(ack_domain, ACK_ERROR_PERMISSION, "Access denied");
return false;
}
return true;
#endif
}
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