db/upnp: move generic code to lib/upnp/

1 files changed, 134 insertions, 0 deletions

diff --git a/src/lib/upnp/Device.cxx b/src/lib/upnp/Device.cxx
new file mode 100644
index 000000000..26bffd0f0
--- /dev/null
+++ b/src/lib/upnp/Device.cxx
@@ -0,0 +1,134 @@
+/*
+ * 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 "lib/expat/ExpatParser.hxx"
+#include "util/Error.hxx"
+
+#include <stdlib.h>
+
+#include <string.h>
+
+UPnPDevice::~UPnPDevice()
+{
+	/* this destructor exists here just so it won't get inlined */
+}
+
+/**
+ * An XML parser which constructs an UPnP device object from the
+ * device descriptor.
+ */
+class UPnPDeviceParser final : public CommonExpatParser {
+	UPnPDevice &m_device;
+
+	std::string *value;
+
+	UPnPService m_tservice;
+
+public:
+	UPnPDeviceParser(UPnPDevice& device)
+		:m_device(device),
+		 value(nullptr) {}
+
+protected:
+	virtual void StartElement(const XML_Char *name, const XML_Char **) {
+		value = nullptr;
+
+		switch (name[0]) {
+		case 'c':
+			if (strcmp(name, "controlURL") == 0)
+				value = &m_tservice.controlURL;
+			break;
+		case 'd':
+			if (strcmp(name, "deviceType") == 0)
+				value = &m_device.deviceType;
+			break;
+		case 'f':
+			if (strcmp(name, "friendlyName") == 0)
+				value = &m_device.friendlyName;
+			break;
+		case 'm':
+			if (strcmp(name, "manufacturer") == 0)
+				value = &m_device.manufacturer;
+			else if (strcmp(name, "modelName") == 0)
+				value = &m_device.modelName;
+			break;
+		case 's':
+			if (strcmp(name, "serviceType") == 0)
+				value = &m_tservice.serviceType;
+			break;
+		case 'U':
+			if (strcmp(name, "UDN") == 0)
+				value = &m_device.UDN;
+			else if (strcmp(name, "URLBase") == 0)
+				value = &m_device.URLBase;
+			break;
+		}
+	}
+
+	virtual void EndElement(const XML_Char *name) {
+		if (value != nullptr) {
+			trimstring(*value);
+			value = nullptr;
+		} else if (!strcmp(name, "service")) {
+			m_device.services.emplace_back(std::move(m_tservice));
+			m_tservice.clear();
+		}
+	}
+
+	virtual void CharacterData(const XML_Char *s, int len) {
+		if (value != nullptr)
+			value->append(s, len);
+	}
+};
+
+bool
+UPnPDevice::Parse(const std::string &url, const char *description,
+		  Error &error)
+{
+	{
+		UPnPDeviceParser mparser(*this);
+		if (!mparser.Parse(description, strlen(description),
+				   true, error))
+			return false;
+	}
+
+	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);
+			}
+		}
+	}
+
+	return true;
+}