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/*
* Copyright (C) 2003-2014 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 "lib/upnp/ContentDirectoryService.hxx"
#include "lib/upnp/Domain.hxx"
#include "lib/upnp/ixmlwrap.hxx"
#include "lib/upnp/Action.hxx"
#include "Directory.hxx"
#include "util/NumberParser.hxx"
#include "util/UriUtil.hxx"
#include "util/Error.hxx"
#include <stdio.h>
static bool
ReadResultTag(UPnPDirContent &dirbuf, IXML_Document *response, Error &error)
{
const char *p = ixmlwrap::getFirstElementValue(response, "Result");
if (p == nullptr)
p = "";
return dirbuf.parse(p, error);
}
inline bool
ContentDirectoryService::readDirSlice(UpnpClient_Handle hdl,
const char *objectId, unsigned offset,
unsigned count, UPnPDirContent &dirbuf,
unsigned &didreadp, unsigned &totalp,
Error &error) const
{
// Create request
char ofbuf[100], cntbuf[100];
sprintf(ofbuf, "%u", offset);
sprintf(cntbuf, "%u", count);
// Some devices require an empty SortCriteria, else bad params
IXML_Document *request =
MakeActionHelper("Browse", m_serviceType.c_str(),
"ObjectID", objectId,
"BrowseFlag", "BrowseDirectChildren",
"Filter", "*",
"SortCriteria", "",
"StartingIndex", ofbuf,
"RequestedCount", cntbuf);
if (request == nullptr) {
error.Set(upnp_domain, "UpnpMakeAction() failed");
return false;
}
IXML_Document *response;
int code = UpnpSendAction(hdl, m_actionURL.c_str(), m_serviceType.c_str(),
0 /*devUDN*/, request, &response);
ixmlDocument_free(request);
if (code != UPNP_E_SUCCESS) {
error.Format(upnp_domain, code,
"UpnpSendAction() failed: %s",
UpnpGetErrorMessage(code));
return false;
}
const char *value = ixmlwrap::getFirstElementValue(response, "NumberReturned");
didreadp = value != nullptr
? ParseUnsigned(value)
: 0;
value = ixmlwrap::getFirstElementValue(response, "TotalMatches");
if (value != nullptr)
totalp = ParseUnsigned(value);
bool success = ReadResultTag(dirbuf, response, error);
ixmlDocument_free(response);
return success;
}
bool
ContentDirectoryService::readDir(UpnpClient_Handle handle,
const char *objectId,
UPnPDirContent &dirbuf,
Error &error) const
{
unsigned offset = 0, total = -1, count;
do {
if (!readDirSlice(handle, objectId, offset, m_rdreqcnt, dirbuf,
count, total, error))
return false;
offset += count;
} while (count > 0 && offset < total);
return true;
}
bool
ContentDirectoryService::search(UpnpClient_Handle hdl,
const char *objectId,
const char *ss,
UPnPDirContent &dirbuf,
Error &error) const
{
unsigned offset = 0, total = -1, count;
do {
char ofbuf[100];
sprintf(ofbuf, "%d", offset);
IXML_Document *request =
MakeActionHelper("Search", m_serviceType.c_str(),
"ContainerID", objectId,
"SearchCriteria", ss,
"Filter", "*",
"SortCriteria", "",
"StartingIndex", ofbuf,
"RequestedCount", "0"); // Setting a value here gets twonky into fits
if (request == 0) {
error.Set(upnp_domain, "UpnpMakeAction() failed");
return false;
}
IXML_Document *response;
auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
m_serviceType.c_str(),
0 /*devUDN*/, request, &response);
ixmlDocument_free(request);
if (code != UPNP_E_SUCCESS) {
error.Format(upnp_domain, code,
"UpnpSendAction() failed: %s",
UpnpGetErrorMessage(code));
return false;
}
const char *value =
ixmlwrap::getFirstElementValue(response, "NumberReturned");
count = value != nullptr
? ParseUnsigned(value)
: 0;
offset += count;
value = ixmlwrap::getFirstElementValue(response, "TotalMatches");
if (value != nullptr)
total = ParseUnsigned(value);
bool success = ReadResultTag(dirbuf, response, error);
ixmlDocument_free(response);
if (!success)
return false;
} while (count > 0 && offset < total);
return true;
}
bool
ContentDirectoryService::getMetadata(UpnpClient_Handle hdl,
const char *objectId,
UPnPDirContent &dirbuf,
Error &error) const
{
// Create request
IXML_Document *request =
MakeActionHelper("Browse", m_serviceType.c_str(),
"ObjectID", objectId,
"BrowseFlag", "BrowseMetadata",
"Filter", "*",
"SortCriteria", "",
"StartingIndex", "0",
"RequestedCount", "1");
if (request == nullptr) {
error.Set(upnp_domain, "UpnpMakeAction() failed");
return false;
}
IXML_Document *response;
auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
m_serviceType.c_str(),
0 /*devUDN*/, request, &response);
ixmlDocument_free(request);
if (code != UPNP_E_SUCCESS) {
error.Format(upnp_domain, code,
"UpnpSendAction() failed: %s",
UpnpGetErrorMessage(code));
return false;
}
bool success = ReadResultTag(dirbuf, response, error);
ixmlDocument_free(response);
return success;
}
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