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/*
* Copyright 2003-2021 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 "LocateUri.hxx"
#include "client/Client.hxx"
#include "fs/AllocatedPath.hxx"
#include "ls.hxx"
#include "util/ASCII.hxx"
#include "util/UriExtract.hxx"
#ifdef ENABLE_DATABASE
#include "storage/StorageInterface.hxx"
#endif
#include <stdexcept>
static LocatedUri
LocateFileUri(const char *uri, const Client *client
#ifdef ENABLE_DATABASE
, const Storage *storage
#endif
)
{
auto path = AllocatedPath::FromUTF8Throw(uri);
#ifdef ENABLE_DATABASE
if (storage != nullptr) {
const auto suffix = storage->MapToRelativeUTF8(uri);
if (suffix.data() != nullptr)
/* this path was relative to the music
directory */
// TODO: don't use suffix.data() (ok for now because we know it's null-terminated)
return LocatedUri(LocatedUri::Type::RELATIVE,
suffix.data());
}
#endif
if (client != nullptr)
client->AllowFile(path);
return LocatedUri(LocatedUri::Type::PATH, uri, std::move(path));
}
static LocatedUri
LocateAbsoluteUri(UriPluginKind kind, const char *uri
#ifdef ENABLE_DATABASE
, const Storage *storage
#endif
)
{
switch (kind) {
case UriPluginKind::INPUT:
case UriPluginKind::STORAGE: // TODO: separate check for storage plugins
if (!uri_supported_scheme(uri))
throw std::runtime_error("Unsupported URI scheme");
break;
case UriPluginKind::PLAYLIST:
/* for now, no validation for playlist URIs; this is
more complicated because there are three ways to
identify which plugin to use: URI scheme, filename
suffix and MIME type */
break;
}
#ifdef ENABLE_DATABASE
if (storage != nullptr) {
const auto suffix = storage->MapToRelativeUTF8(uri);
if (suffix.data() != nullptr)
// TODO: don't use suffix.data() (ok for now because we know it's null-terminated)
return LocatedUri(LocatedUri::Type::RELATIVE,
suffix.data());
}
#endif
return LocatedUri(LocatedUri::Type::ABSOLUTE, uri);
}
LocatedUri
LocateUri(UriPluginKind kind,
const char *uri, const Client *client
#ifdef ENABLE_DATABASE
, const Storage *storage
#endif
)
{
/* skip the obsolete "file://" prefix */
const char *path_utf8 = StringAfterPrefixCaseASCII(uri, "file://");
if (path_utf8 != nullptr) {
if (!PathTraitsUTF8::IsAbsolute(path_utf8))
throw std::runtime_error("Malformed file:// URI");
return LocateFileUri(path_utf8, client
#ifdef ENABLE_DATABASE
, storage
#endif
);
} else if (PathTraitsUTF8::IsAbsolute(uri))
return LocateFileUri(uri, client
#ifdef ENABLE_DATABASE
, storage
#endif
);
else if (uri_has_scheme(uri))
return LocateAbsoluteUri(kind, uri
#ifdef ENABLE_DATABASE
, storage
#endif
);
else
return LocatedUri(LocatedUri::Type::RELATIVE, uri);
}
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