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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 "Device.hxx"
#include "Util.hxx"
#include "Expat.hxx"
#include "Log.hxx"
#include "util/Error.hxx"
#include <stdlib.h>
#include <string.h>
/**
* An XML parser which constructs an UPnP device object from the
* device descriptor.
*/
class UPnPDeviceParser final : public CommonExpatParser {
UPnPDevice &m_device;
std::string m_tabs;
std::vector<std::string> m_path;
UPnPService m_tservice;
public:
UPnPDeviceParser(UPnPDevice& device)
:m_device(device) {}
protected:
virtual void StartElement(const XML_Char *name, const XML_Char **) {
m_tabs.push_back('\t');
m_path.push_back(name);
}
virtual void EndElement(const XML_Char *name) {
if (!strcmp(name, "service")) {
m_device.services.push_back(m_tservice);
m_tservice.clear();
}
if (m_tabs.size())
m_tabs.erase(m_tabs.size()-1);
m_path.pop_back();
}
virtual void CharacterData(const XML_Char *s, int len) {
if (len == 0)
return;
std::string str(s, len);
trimstring(str);
switch (m_path.back()[0]) {
case 'c':
if (!m_path.back().compare("controlURL"))
m_tservice.controlURL += str;
break;
case 'd':
if (!m_path.back().compare("deviceType"))
m_device.deviceType += str;
break;
case 'e':
if (!m_path.back().compare("eventSubURL"))
m_tservice.eventSubURL += str;
break;
case 'f':
if (!m_path.back().compare("friendlyName"))
m_device.friendlyName += str;
break;
case 'm':
if (!m_path.back().compare("manufacturer"))
m_device.manufacturer += str;
else if (!m_path.back().compare("modelName"))
m_device.modelName += str;
break;
case 's':
if (!m_path.back().compare("serviceType"))
m_tservice.serviceType = str;
else if (!m_path.back().compare("serviceId"))
m_tservice.serviceId += str;
case 'S':
if (!m_path.back().compare("SCPDURL"))
m_tservice.SCPDURL = str;
break;
case 'U':
if (!m_path.back().compare("UDN"))
m_device.UDN = str;
else if (!m_path.back().compare("URLBase"))
m_device.URLBase += str;
break;
}
}
};
UPnPDevice::UPnPDevice(const std::string &url, const std::string &description)
:ok(false)
{
UPnPDeviceParser mparser(*this);
Error error;
if (!mparser.Parse(description.data(), description.length(), true,
error)) {
// TODO: pass Error to caller
LogError(error);
return;
}
if (URLBase.empty()) {
// The standard says that if the URLBase value is empty, we should use
// the url the description was retrieved from. However this is
// sometimes something like http://host/desc.xml, sometimes something
// like http://host/
if (url.size() < 8) {
// ???
URLBase = url;
} else {
auto hostslash = url.find_first_of("/", 7);
if (hostslash == std::string::npos || hostslash == url.size()-1) {
URLBase = url;
} else {
URLBase = path_getfather(url);
}
}
}
ok = true;
}
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