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-rw-r--r--src/lib/upnp/Action.hxx56
-rw-r--r--src/lib/upnp/ContentDirectoryService.cxx93
-rw-r--r--src/lib/upnp/ContentDirectoryService.hxx130
-rw-r--r--src/lib/upnp/Device.cxx134
-rw-r--r--src/lib/upnp/Device.hxx88
-rw-r--r--src/lib/upnp/Discovery.cxx318
-rw-r--r--src/lib/upnp/Discovery.hxx152
-rw-r--r--src/lib/upnp/Domain.cxx23
-rw-r--r--src/lib/upnp/Domain.hxx27
-rw-r--r--src/lib/upnp/Util.cxx166
-rw-r--r--src/lib/upnp/Util.hxx46
-rw-r--r--src/lib/upnp/WorkQueue.hxx206
-rw-r--r--src/lib/upnp/ixmlwrap.cxx44
-rw-r--r--src/lib/upnp/ixmlwrap.hxx35
-rw-r--r--src/lib/upnp/upnpplib.cxx75
-rw-r--r--src/lib/upnp/upnpplib.hxx70
16 files changed, 1663 insertions, 0 deletions
diff --git a/src/lib/upnp/Action.hxx b/src/lib/upnp/Action.hxx
new file mode 100644
index 000000000..28c88be92
--- /dev/null
+++ b/src/lib/upnp/Action.hxx
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_UPNP_ACTION_HXX
+#define MPD_UPNP_ACTION_HXX
+
+#include "Compiler.h"
+
+#include <upnp/upnptools.h>
+
+static inline constexpr unsigned
+CountNameValuePairs()
+{
+ return 0;
+}
+
+template<typename... Args>
+static inline constexpr unsigned
+CountNameValuePairs(gcc_unused const char *name, gcc_unused const char *value,
+ Args... args)
+{
+ return 1 + CountNameValuePairs(args...);
+}
+
+/**
+ * A wrapper for UpnpMakeAction() that counts the number of name/value
+ * pairs and adds the nullptr sentinel.
+ */
+template<typename... Args>
+static inline IXML_Document *
+MakeActionHelper(const char *action_name, const char *service_type,
+ Args... args)
+{
+ const unsigned n = CountNameValuePairs(args...);
+ return UpnpMakeAction(action_name, service_type, n,
+ args...,
+ nullptr, nullptr);
+}
+
+#endif
diff --git a/src/lib/upnp/ContentDirectoryService.cxx b/src/lib/upnp/ContentDirectoryService.cxx
new file mode 100644
index 000000000..ef8757ec5
--- /dev/null
+++ b/src/lib/upnp/ContentDirectoryService.cxx
@@ -0,0 +1,93 @@
+/*
+ * 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 "ContentDirectoryService.hxx"
+#include "Domain.hxx"
+#include "Device.hxx"
+#include "ixmlwrap.hxx"
+#include "Util.hxx"
+#include "Action.hxx"
+#include "util/Error.hxx"
+
+ContentDirectoryService::ContentDirectoryService(const UPnPDevice &device,
+ const UPnPService &service)
+ :m_actionURL(caturl(device.URLBase, service.controlURL)),
+ m_serviceType(service.serviceType),
+ m_deviceId(device.UDN),
+ m_friendlyName(device.friendlyName),
+ m_manufacturer(device.manufacturer),
+ m_modelName(device.modelName),
+ m_rdreqcnt(200)
+{
+ if (!m_modelName.compare("MediaTomb")) {
+ // Readdir by 200 entries is good for most, but MediaTomb likes
+ // them really big. Actually 1000 is better but I don't dare
+ m_rdreqcnt = 500;
+ }
+}
+
+ContentDirectoryService::~ContentDirectoryService()
+{
+ /* this destructor exists here just so it won't get inlined */
+}
+
+bool
+ContentDirectoryService::getSearchCapabilities(UpnpClient_Handle hdl,
+ std::list<std::string> &result,
+ Error &error) const
+{
+ assert(result.empty());
+
+ IXML_Document *request =
+ UpnpMakeAction("GetSearchCapabilities", m_serviceType.c_str(),
+ 0,
+ nullptr, nullptr);
+ 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 *s = ixmlwrap::getFirstElementValue(response, "SearchCaps");
+ if (s == nullptr || *s == 0) {
+ ixmlDocument_free(response);
+ return true;
+ }
+
+ bool success = true;
+ if (!csvToStrings(s, result)) {
+ error.Set(upnp_domain, "Bad response");
+ success = false;
+ }
+
+ ixmlDocument_free(response);
+ return success;
+}
diff --git a/src/lib/upnp/ContentDirectoryService.hxx b/src/lib/upnp/ContentDirectoryService.hxx
new file mode 100644
index 000000000..3c4497be1
--- /dev/null
+++ b/src/lib/upnp/ContentDirectoryService.hxx
@@ -0,0 +1,130 @@
+/*
+ * 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.
+ */
+
+#ifndef _UPNPDIR_HXX_INCLUDED_
+#define _UPNPDIR_HXX_INCLUDED_
+
+#include "Compiler.h"
+
+#include <upnp/upnp.h>
+
+#include <string>
+#include <list>
+
+class Error;
+class UPnPDevice;
+struct UPnPService;
+class UPnPDirContent;
+
+/**
+ * Content Directory Service class.
+ *
+ * This stores identity data from a directory service
+ * and the device it belongs to, and has methods to query
+ * the directory, using libupnp for handling the UPnP protocols.
+ *
+ * Note: m_rdreqcnt: number of entries requested per directory read.
+ * 0 means all entries. The device can still return less entries than
+ * requested, depending on its own limits. In general it's not optimal
+ * becauses it triggers issues, and is sometimes actually slower, e.g. on
+ * a D-Link NAS 327
+ *
+ * The value chosen may affect by the UpnpSetMaxContentLength
+ * (2000*1024) done during initialization, but this should be ample
+ */
+class ContentDirectoryService {
+ std::string m_actionURL;
+ std::string m_serviceType;
+ std::string m_deviceId;
+ std::string m_friendlyName;
+ std::string m_manufacturer;
+ std::string m_modelName;
+
+ int m_rdreqcnt; // Slice size to use when reading
+
+public:
+ /**
+ * Construct by copying data from device and service objects.
+ *
+ * The discovery service does this: use getDirServices()
+ */
+ ContentDirectoryService(const UPnPDevice &device,
+ const UPnPService &service);
+
+ /** An empty one */
+ ContentDirectoryService() = default;
+
+ ~ContentDirectoryService();
+
+ /** Read a container's children list into dirbuf.
+ *
+ * @param objectId the UPnP object Id for the container. Root has Id "0"
+ * @param[out] dirbuf stores the entries we read.
+ */
+ bool readDir(UpnpClient_Handle handle,
+ const char *objectId, UPnPDirContent &dirbuf,
+ Error &error) const;
+
+ bool readDirSlice(UpnpClient_Handle handle,
+ const char *objectId, unsigned offset,
+ unsigned count, UPnPDirContent& dirbuf,
+ unsigned &didread, unsigned &total,
+ Error &error) const;
+
+ /** Search the content directory service.
+ *
+ * @param objectId the UPnP object Id under which the search
+ * should be done. Not all servers actually support this below
+ * root. Root has Id "0"
+ * @param searchstring an UPnP searchcriteria string. Check the
+ * UPnP document: UPnP-av-ContentDirectory-v1-Service-20020625.pdf
+ * section 2.5.5. Maybe we'll provide an easier way some day...
+ * @param[out] dirbuf stores the entries we read.
+ */
+ bool search(UpnpClient_Handle handle,
+ const char *objectId, const char *searchstring,
+ UPnPDirContent &dirbuf,
+ Error &error) const;
+
+ /** Read metadata for a given node.
+ *
+ * @param objectId the UPnP object Id. Root has Id "0"
+ * @param[out] dirbuf stores the entries we read. At most one entry will be
+ * returned.
+ */
+ bool getMetadata(UpnpClient_Handle handle,
+ const char *objectId, UPnPDirContent &dirbuf,
+ Error &error) const;
+
+ /** Retrieve search capabilities
+ *
+ * @param[out] result an empty vector: no search, or a single '*' element:
+ * any tag can be used in a search, or a list of usable tag names.
+ */
+ bool getSearchCapabilities(UpnpClient_Handle handle,
+ std::list<std::string> &result,
+ Error &error) const;
+
+ /** Retrieve the "friendly name" for this server, useful for display. */
+ const char *getFriendlyName() const {
+ return m_friendlyName.c_str();
+ }
+};
+
+#endif /* _UPNPDIR_HXX_INCLUDED_ */
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;
+}
diff --git a/src/lib/upnp/Device.hxx b/src/lib/upnp/Device.hxx
new file mode 100644
index 000000000..dd7ecac2d
--- /dev/null
+++ b/src/lib/upnp/Device.hxx
@@ -0,0 +1,88 @@
+/*
+ * 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.
+ */
+
+#ifndef _UPNPDEV_HXX_INCLUDED_
+#define _UPNPDEV_HXX_INCLUDED_
+
+#include <vector>
+#include <string>
+
+class Error;
+
+/**
+ * UPnP Description phase: interpreting the device description which we
+ * downloaded from the URL obtained by the discovery phase.
+ */
+
+/**
+ * Data holder for a UPnP service, parsed from the XML description
+ * downloaded after discovery yielded its URL.
+ */
+struct UPnPService {
+ // e.g. urn:schemas-upnp-org:service:ConnectionManager:1
+ std::string serviceType;
+ std::string controlURL; // e.g.: /upnp/control/cm
+
+ void clear()
+ {
+ serviceType.clear();
+ controlURL.clear();
+ }
+};
+
+/**
+ * Data holder for a UPnP device, parsed from the XML description obtained
+ * during discovery.
+ * A device may include several services. To be of interest to us,
+ * one of them must be a ContentDirectory.
+ */
+class UPnPDevice {
+public:
+ // e.g. urn:schemas-upnp-org:device:MediaServer:1
+ std::string deviceType;
+ // e.g. MediaTomb
+ std::string friendlyName;
+ // Unique device number. This should match the deviceID in the
+ // discovery message. e.g. uuid:a7bdcd12-e6c1-4c7e-b588-3bbc959eda8d
+ std::string UDN;
+ // Base for all relative URLs. e.g. http://192.168.4.4:49152/
+ std::string URLBase;
+ // Manufacturer: e.g. D-Link, PacketVideo ("manufacturer")
+ std::string manufacturer;
+ // Model name: e.g. MediaTomb, DNS-327L ("modelName")
+ std::string modelName;
+ // Services provided by this device.
+ std::vector<UPnPService> services;
+
+ UPnPDevice() = default;
+ UPnPDevice(const UPnPDevice &) = delete;
+ UPnPDevice(UPnPDevice &&) = default;
+ UPnPDevice &operator=(UPnPDevice &&) = default;
+
+ ~UPnPDevice();
+
+ /** Build device from xml description downloaded from discovery
+ * @param url where the description came from
+ * @param description the xml device description
+ */
+ bool Parse(const std::string &url, const char *description,
+ Error &error);
+};
+
+#endif /* _UPNPDEV_HXX_INCLUDED_ */
diff --git a/src/lib/upnp/Discovery.cxx b/src/lib/upnp/Discovery.cxx
new file mode 100644
index 000000000..5203dba83
--- /dev/null
+++ b/src/lib/upnp/Discovery.cxx
@@ -0,0 +1,318 @@
+/*
+ * 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 "Discovery.hxx"
+#include "Domain.hxx"
+#include "ContentDirectoryService.hxx"
+#include "upnpplib.hxx"
+#include "system/Clock.hxx"
+#include "Log.hxx"
+
+#include <upnp/upnptools.h>
+
+#include <string.h>
+
+// The service type string we are looking for.
+static constexpr char ContentDirectorySType[] = "urn:schemas-upnp-org:service:ContentDirectory:1";
+
+// We don't include a version in comparisons, as we are satisfied with
+// version 1
+gcc_pure
+static bool
+isCDService(const char *st)
+{
+ constexpr size_t sz = sizeof(ContentDirectorySType) - 3;
+ return memcmp(ContentDirectorySType, st, sz) == 0;
+}
+
+// The type of device we're asking for in search
+static constexpr char MediaServerDType[] = "urn:schemas-upnp-org:device:MediaServer:1";
+
+gcc_pure
+static bool
+isMSDevice(const char *st)
+{
+ constexpr size_t sz = sizeof(MediaServerDType) - 3;
+ return memcmp(MediaServerDType, st, sz) == 0;
+}
+
+inline void
+UPnPDeviceDirectory::LockAdd(ContentDirectoryDescriptor &&d)
+{
+ const ScopeLock protect(mutex);
+
+ for (auto &i : directories) {
+ if (i.id == d.id) {
+ i = std::move(d);
+ return;
+ }
+ }
+
+ directories.emplace_back(std::move(d));
+}
+
+inline void
+UPnPDeviceDirectory::LockRemove(const std::string &id)
+{
+ const ScopeLock protect(mutex);
+
+ for (auto i = directories.begin(), end = directories.end();
+ i != end; ++i) {
+ if (i->id == id) {
+ directories.erase(i);
+ break;
+ }
+ }
+}
+
+inline void
+UPnPDeviceDirectory::discoExplorer()
+{
+ for (;;) {
+ DiscoveredTask *tsk = 0;
+ if (!discoveredQueue.take(tsk)) {
+ discoveredQueue.workerExit();
+ return;
+ }
+
+ // Device signals its existence and well-being. Perform the
+ // UPnP "description" phase by downloading and decoding the
+ // description document.
+ char *buf;
+ // LINE_SIZE is defined by libupnp's upnp.h...
+ char contentType[LINE_SIZE];
+ int code = UpnpDownloadUrlItem(tsk->url.c_str(), &buf, contentType);
+ if (code != UPNP_E_SUCCESS) {
+ continue;
+ }
+
+ // Update or insert the device
+ ContentDirectoryDescriptor d(std::move(tsk->deviceId),
+ MonotonicClockS(), tsk->expires);
+
+ {
+ Error error2;
+ bool success = d.Parse(tsk->url, buf, error2);
+ free(buf);
+ if (!success) {
+ delete tsk;
+ LogError(error2);
+ continue;
+ }
+ }
+
+ LockAdd(std::move(d));
+ delete tsk;
+ }
+}
+
+void *
+UPnPDeviceDirectory::discoExplorer(void *ctx)
+{
+ UPnPDeviceDirectory &directory = *(UPnPDeviceDirectory *)ctx;
+ directory.discoExplorer();
+ return (void*)1;
+}
+
+inline int
+UPnPDeviceDirectory::OnAlive(Upnp_Discovery *disco)
+{
+ if (isMSDevice(disco->DeviceType) ||
+ isCDService(disco->ServiceType)) {
+ DiscoveredTask *tp = new DiscoveredTask(disco);
+ if (discoveredQueue.put(tp))
+ return UPNP_E_FINISH;
+ }
+
+ return UPNP_E_SUCCESS;
+}
+
+inline int
+UPnPDeviceDirectory::OnByeBye(Upnp_Discovery *disco)
+{
+ if (isMSDevice(disco->DeviceType) ||
+ isCDService(disco->ServiceType)) {
+ // Device signals it is going off.
+ LockRemove(disco->DeviceId);
+ }
+
+ return UPNP_E_SUCCESS;
+}
+
+// This gets called for all libupnp asynchronous events, in a libupnp
+// thread context.
+// Example: ContentDirectories appearing and disappearing from the network
+// We queue a task for our worker thread(s)
+inline int
+UPnPDeviceDirectory::cluCallBack(Upnp_EventType et, void *evp)
+{
+ switch (et) {
+ case UPNP_DISCOVERY_SEARCH_RESULT:
+ case UPNP_DISCOVERY_ADVERTISEMENT_ALIVE:
+ {
+ Upnp_Discovery *disco = (Upnp_Discovery *)evp;
+ return OnAlive(disco);
+ }
+
+ case UPNP_DISCOVERY_ADVERTISEMENT_BYEBYE:
+ {
+ Upnp_Discovery *disco = (Upnp_Discovery *)evp;
+ return OnByeBye(disco);
+ }
+
+ default:
+ // Ignore other events for now
+ break;
+ }
+
+ return UPNP_E_SUCCESS;
+}
+
+bool
+UPnPDeviceDirectory::expireDevices(Error &error)
+{
+ const ScopeLock protect(mutex);
+ const unsigned now = MonotonicClockS();
+ bool didsomething = false;
+
+ for (auto it = directories.begin();
+ it != directories.end();) {
+ if (now > it->expires) {
+ it = directories.erase(it);
+ didsomething = true;
+ } else {
+ it++;
+ }
+ }
+
+ if (didsomething)
+ return search(error);
+
+ return true;
+}
+
+UPnPDeviceDirectory::UPnPDeviceDirectory(LibUPnP *_lib)
+ :lib(_lib),
+ discoveredQueue("DiscoveredQueue"),
+ m_searchTimeout(2), m_lastSearch(0)
+{
+}
+
+UPnPDeviceDirectory::~UPnPDeviceDirectory()
+{
+ /* this destructor exists here just so it won't get inlined */
+}
+
+bool
+UPnPDeviceDirectory::Start(Error &error)
+{
+ if (!discoveredQueue.start(1, discoExplorer, this)) {
+ error.Set(upnp_domain, "Discover work queue start failed");
+ return false;
+ }
+
+ lib->SetHandler([this](Upnp_EventType type, void *event){
+ cluCallBack(type, event);
+ });
+
+ return search(error);
+}
+
+bool
+UPnPDeviceDirectory::search(Error &error)
+{
+ const unsigned now = MonotonicClockS();
+ if (now - m_lastSearch < 10)
+ return true;
+ m_lastSearch = now;
+
+ // We search both for device and service just in case.
+ int code = UpnpSearchAsync(lib->getclh(), m_searchTimeout,
+ ContentDirectorySType, lib);
+ if (code != UPNP_E_SUCCESS) {
+ error.Format(upnp_domain, code,
+ "UpnpSearchAsync() failed: %s",
+ UpnpGetErrorMessage(code));
+ return false;
+ }
+
+ code = UpnpSearchAsync(lib->getclh(), m_searchTimeout,
+ MediaServerDType, lib);
+ if (code != UPNP_E_SUCCESS) {
+ error.Format(upnp_domain, code,
+ "UpnpSearchAsync() failed: %s",
+ UpnpGetErrorMessage(code));
+ return false;
+ }
+
+ return true;
+}
+
+bool
+UPnPDeviceDirectory::getDirServices(std::vector<ContentDirectoryService> &out,
+ Error &error)
+{
+ // Has locking, do it before our own lock
+ if (!expireDevices(error))
+ return false;
+
+ const ScopeLock protect(mutex);
+
+ for (auto dit = directories.begin();
+ dit != directories.end(); dit++) {
+ for (const auto &service : dit->device.services) {
+ if (isCDService(service.serviceType.c_str())) {
+ out.emplace_back(dit->device, service);
+ }
+ }
+ }
+
+ return true;
+}
+
+bool
+UPnPDeviceDirectory::getServer(const char *friendlyName,
+ ContentDirectoryService &server,
+ Error &error)
+{
+ // Has locking, do it before our own lock
+ if (!expireDevices(error))
+ return false;
+
+ const ScopeLock protect(mutex);
+
+ for (const auto &i : directories) {
+ const auto &device = i.device;
+
+ if (device.friendlyName != friendlyName)
+ continue;
+
+ for (const auto &service : device.services) {
+ if (isCDService(service.serviceType.c_str())) {
+ server = ContentDirectoryService(device,
+ service);
+ return true;
+ }
+ }
+ }
+
+ error.Set(upnp_domain, "Server not found");
+ return false;
+}
diff --git a/src/lib/upnp/Discovery.hxx b/src/lib/upnp/Discovery.hxx
new file mode 100644
index 000000000..4c64fe420
--- /dev/null
+++ b/src/lib/upnp/Discovery.hxx
@@ -0,0 +1,152 @@
+/*
+ * 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.
+ */
+
+#ifndef _UPNPPDISC_H_X_INCLUDED_
+#define _UPNPPDISC_H_X_INCLUDED_
+
+#include "Device.hxx"
+#include "WorkQueue.hxx"
+#include "thread/Mutex.hxx"
+#include "util/Error.hxx"
+
+#include <upnp/upnp.h>
+
+#include <list>
+#include <vector>
+#include <string>
+
+class LibUPnP;
+class ContentDirectoryService;
+
+/**
+ * Manage UPnP discovery and maintain a directory of active devices. Singleton.
+ *
+ * We are only interested in MediaServers with a ContentDirectory service
+ * for now, but this could be made more general, by removing the filtering.
+ */
+class UPnPDeviceDirectory {
+ /**
+ * Each appropriate discovery event (executing in a libupnp thread
+ * context) queues the following task object for processing by the
+ * discovery thread.
+ */
+ struct DiscoveredTask {
+ std::string url;
+ std::string deviceId;
+ unsigned expires; // Seconds valid
+
+ DiscoveredTask(const Upnp_Discovery *disco)
+ :url(disco->Location),
+ deviceId(disco->DeviceId),
+ expires(disco->Expires) {}
+ };
+
+ /**
+ * Descriptor for one device having a Content Directory
+ * service found on the network.
+ */
+ class ContentDirectoryDescriptor {
+ public:
+ std::string id;
+
+ UPnPDevice device;
+
+ /**
+ * The MonotonicClockS() time stamp when this device
+ * expires.
+ */
+ unsigned expires;
+
+ ContentDirectoryDescriptor() = default;
+
+ ContentDirectoryDescriptor(std::string &&_id,
+ unsigned last, int exp)
+ :id(std::move(_id)), expires(last + exp + 20) {}
+
+ bool Parse(const std::string &url, const char *description,
+ Error &_error) {
+ return device.Parse(url, description, _error);
+ }
+ };
+
+ LibUPnP *const lib;
+
+ Mutex mutex;
+ std::list<ContentDirectoryDescriptor> directories;
+ WorkQueue<DiscoveredTask *> discoveredQueue;
+
+ /**
+ * The UPnP device search timeout, which should actually be
+ * called delay because it's the base of a random delay that
+ * the devices apply to avoid responding all at the same time.
+ */
+ int m_searchTimeout;
+
+ /**
+ * The MonotonicClockS() time stamp of the last search.
+ */
+ unsigned m_lastSearch;
+
+public:
+ UPnPDeviceDirectory(LibUPnP *_lib);
+ ~UPnPDeviceDirectory();
+
+ UPnPDeviceDirectory(const UPnPDeviceDirectory &) = delete;
+ UPnPDeviceDirectory& operator=(const UPnPDeviceDirectory &) = delete;
+
+ bool Start(Error &error);
+
+ /** Retrieve the directory services currently seen on the network */
+ bool getDirServices(std::vector<ContentDirectoryService> &, Error &);
+
+ /**
+ * Get server by friendly name.
+ */
+ bool getServer(const char *friendlyName,
+ ContentDirectoryService &server,
+ Error &error);
+
+private:
+ bool search(Error &error);
+
+ /**
+ * Look at the devices and get rid of those which have not
+ * been seen for too long. We do this when listing the top
+ * directory.
+ */
+ bool expireDevices(Error &error);
+
+ void LockAdd(ContentDirectoryDescriptor &&d);
+ void LockRemove(const std::string &id);
+
+ /**
+ * Worker routine for the discovery queue. Get messages about
+ * devices appearing and disappearing, and update the
+ * directory pool accordingly.
+ */
+ static void *discoExplorer(void *);
+ void discoExplorer();
+
+ int OnAlive(Upnp_Discovery *disco);
+ int OnByeBye(Upnp_Discovery *disco);
+ int cluCallBack(Upnp_EventType et, void *evp);
+};
+
+
+#endif /* _UPNPPDISC_H_X_INCLUDED_ */
diff --git a/src/lib/upnp/Domain.cxx b/src/lib/upnp/Domain.cxx
new file mode 100644
index 000000000..010d4c7c2
--- /dev/null
+++ b/src/lib/upnp/Domain.cxx
@@ -0,0 +1,23 @@
+/*
+ * 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 "Domain.hxx"
+#include "util/Domain.hxx"
+
+const Domain upnp_domain("upnp");
diff --git a/src/lib/upnp/Domain.hxx b/src/lib/upnp/Domain.hxx
new file mode 100644
index 000000000..ec01ef735
--- /dev/null
+++ b/src/lib/upnp/Domain.hxx
@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_UPNP_DOMAIN_HXX
+#define MPD_UPNP_DOMAIN_HXX
+
+class Domain;
+
+extern const Domain upnp_domain;
+
+#endif
diff --git a/src/lib/upnp/Util.cxx b/src/lib/upnp/Util.cxx
new file mode 100644
index 000000000..cf34a47d3
--- /dev/null
+++ b/src/lib/upnp/Util.cxx
@@ -0,0 +1,166 @@
+/*
+ * 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 "Util.hxx"
+
+#include <upnp/ixml.h>
+
+#include <assert.h>
+
+/** Get rid of white space at both ends */
+void
+trimstring(std::string &s, const char *ws)
+{
+ auto pos = s.find_first_not_of(ws);
+ if (pos == std::string::npos) {
+ s.clear();
+ return;
+ }
+ s.replace(0, pos, std::string());
+
+ pos = s.find_last_not_of(ws);
+ if (pos != std::string::npos && pos != s.length()-1)
+ s.replace(pos + 1, std::string::npos, std::string());
+}
+
+std::string
+caturl(const std::string &s1, const std::string &s2)
+{
+ if (s2.front() == '/') {
+ /* absolute path: replace the whole URI path in s1 */
+
+ auto i = s1.find("://");
+ if (i == s1.npos)
+ /* no scheme: override s1 completely */
+ return s2;
+
+ /* find the first slash after the host part */
+ i = s1.find('/', i + 3);
+ if (i == s1.npos)
+ /* there's no URI path - simply append s2 */
+ i = s1.length();
+
+ return s1.substr(0, i) + s2;
+ }
+
+ std::string out(s1);
+ if (out.back() != '/')
+ out.push_back('/');
+
+ out += s2;
+ return out;
+}
+
+static void
+path_catslash(std::string &s)
+{
+ if (s.empty() || s.back() != '/')
+ s += '/';
+}
+
+std::string
+path_getfather(const std::string &s)
+{
+ std::string father = s;
+
+ // ??
+ if (father.empty())
+ return "./";
+
+ if (father.back() == '/') {
+ // Input ends with /. Strip it, handle special case for root
+ if (father.length() == 1)
+ return father;
+ father.erase(father.length()-1);
+ }
+
+ auto slp = father.rfind('/');
+ if (slp == std::string::npos)
+ return "./";
+
+ father.erase(slp);
+ path_catslash(father);
+ return father;
+}
+
+std::list<std::string>
+stringToTokens(const std::string &str,
+ const char *delims, bool skipinit)
+{
+ std::list<std::string> tokens;
+
+ std::string::size_type startPos = 0;
+
+ // Skip initial delims, return empty if this eats all.
+ if (skipinit &&
+ (startPos = str.find_first_not_of(delims, 0)) == std::string::npos)
+ return tokens;
+
+ while (startPos < str.size()) {
+ // Find next delimiter or end of string (end of token)
+ auto pos = str.find_first_of(delims, startPos);
+
+ // Add token to the vector and adjust start
+ if (pos == std::string::npos) {
+ tokens.emplace_back(str, startPos);
+ break;
+ } else if (pos == startPos) {
+ // Dont' push empty tokens after first
+ if (tokens.empty())
+ tokens.emplace_back();
+ startPos = ++pos;
+ } else {
+ tokens.emplace_back(str, startPos, pos - startPos);
+ startPos = ++pos;
+ }
+ }
+
+ return tokens;
+}
+
+template <class T>
+bool
+csvToStrings(const char *s, T &tokens)
+{
+ assert(tokens.empty());
+
+ std::string current;
+
+ while (true) {
+ char ch = *s++;
+ if (ch == 0) {
+ tokens.emplace_back(std::move(current));
+ return true;
+ }
+
+ if (ch == '\\') {
+ ch = *s++;
+ if (ch == 0)
+ return false;
+ } else if (ch == ',') {
+ tokens.emplace_back(std::move(current));
+ current.clear();
+ continue;
+ }
+
+ current.push_back(ch);
+ }
+}
+
+template bool csvToStrings<std::list<std::string>>(const char *, std::list<std::string> &);
diff --git a/src/lib/upnp/Util.hxx b/src/lib/upnp/Util.hxx
new file mode 100644
index 000000000..58e382faa
--- /dev/null
+++ b/src/lib/upnp/Util.hxx
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_UPNP_UTIL_HXX
+#define MPD_UPNP_UTIL_HXX
+
+#include "Compiler.h"
+
+#include <string>
+#include <list>
+
+std::string
+caturl(const std::string& s1, const std::string& s2);
+
+void
+trimstring(std::string &s, const char *ws = " \t\n");
+
+std::string
+path_getfather(const std::string &s);
+
+gcc_pure
+std::list<std::string>
+stringToTokens(const std::string &str,
+ const char *delims = "/", bool skipinit = true);
+
+template <class T>
+bool
+csvToStrings(const char *s, T &tokens);
+
+#endif /* _UPNPP_H_X_INCLUDED_ */
diff --git a/src/lib/upnp/WorkQueue.hxx b/src/lib/upnp/WorkQueue.hxx
new file mode 100644
index 000000000..fe8ce53f9
--- /dev/null
+++ b/src/lib/upnp/WorkQueue.hxx
@@ -0,0 +1,206 @@
+/*
+ * 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.
+ */
+
+#ifndef _WORKQUEUE_H_INCLUDED_
+#define _WORKQUEUE_H_INCLUDED_
+
+#include "thread/Mutex.hxx"
+#include "thread/Cond.hxx"
+
+#include <assert.h>
+#include <pthread.h>
+
+#include <string>
+#include <queue>
+
+#define LOGINFO(X)
+#define LOGERR(X)
+
+/**
+ * A WorkQueue manages the synchronisation around a queue of work items,
+ * where a number of client threads queue tasks and a number of worker
+ * threads take and execute them. The goal is to introduce some level
+ * of parallelism between the successive steps of a previously single
+ * threaded pipeline. For example data extraction / data preparation / index
+ * update, but this could have other uses.
+ *
+ * There is no individual task status return. In case of fatal error,
+ * the client or worker sets an end condition on the queue. A second
+ * queue could conceivably be used for returning individual task
+ * status.
+ */
+template <class T>
+class WorkQueue {
+ // Configuration
+ const std::string name;
+
+ // Status
+ // Worker threads having called exit
+ unsigned n_workers_exited;
+ bool ok;
+
+ unsigned n_threads;
+ pthread_t *threads;
+
+ // Synchronization
+ std::queue<T> queue;
+ Cond client_cond;
+ Cond worker_cond;
+ Mutex mutex;
+
+public:
+ /** Create a WorkQueue
+ * @param name for message printing
+ * @param hi number of tasks on queue before clients blocks. Default 0
+ * meaning no limit. hi == -1 means that the queue is disabled.
+ * @param lo minimum count of tasks before worker starts. Default 1.
+ */
+ WorkQueue(const char *_name)
+ :name(_name),
+ n_workers_exited(0),
+ ok(false),
+ n_threads(0), threads(nullptr)
+ {
+ }
+
+ ~WorkQueue() {
+ setTerminateAndWait();
+ }
+
+ /** Start the worker threads.
+ *
+ * @param nworkers number of threads copies to start.
+ * @param start_routine thread function. It should loop
+ * taking (QueueWorker::take()) and executing tasks.
+ * @param arg initial parameter to thread function.
+ * @return true if ok.
+ */
+ bool start(unsigned nworkers, void *(*workproc)(void *), void *arg)
+ {
+ const ScopeLock protect(mutex);
+
+ assert(nworkers > 0);
+ assert(!ok);
+ assert(n_threads == 0);
+ assert(threads == nullptr);
+
+ n_threads = nworkers;
+ threads = new pthread_t[n_threads];
+
+ for (unsigned i = 0; i < nworkers; i++) {
+ int err;
+ if ((err = pthread_create(&threads[i], 0, workproc, arg))) {
+ LOGERR(("WorkQueue:%s: pthread_create failed, err %d\n",
+ name.c_str(), err));
+ return false;
+ }
+ }
+
+ ok = true;
+ return true;
+ }
+
+ /** Add item to work queue, called from client.
+ *
+ * Sleeps if there are already too many.
+ */
+ template<typename U>
+ bool put(U &&u)
+ {
+ const ScopeLock protect(mutex);
+
+ queue.emplace(std::forward<U>(u));
+
+ // Just wake one worker, there is only one new task.
+ worker_cond.signal();
+
+ return true;
+ }
+
+
+ /** Tell the workers to exit, and wait for them.
+ */
+ void setTerminateAndWait()
+ {
+ const ScopeLock protect(mutex);
+
+ // Wait for all worker threads to have called workerExit()
+ ok = false;
+ while (n_workers_exited < n_threads) {
+ worker_cond.broadcast();
+ client_cond.wait(mutex);
+ }
+
+ // Perform the thread joins and compute overall status
+ // Workers return (void*)1 if ok
+ for (unsigned i = 0; i < n_threads; ++i) {
+ void *status;
+ pthread_join(threads[i], &status);
+ }
+
+ delete[] threads;
+ threads = nullptr;
+ n_threads = 0;
+
+ // Reset to start state.
+ n_workers_exited = 0;
+ }
+
+ /** Take task from queue. Called from worker.
+ *
+ * Sleeps if there are not enough. Signal if we go to sleep on empty
+ * queue: client may be waiting for our going idle.
+ */
+ bool take(T &tp)
+ {
+ const ScopeLock protect(mutex);
+
+ if (!ok)
+ return false;
+
+ while (queue.empty()) {
+ worker_cond.wait(mutex);
+ if (!ok)
+ return false;
+ }
+
+ tp = std::move(queue.front());
+ queue.pop();
+ return true;
+ }
+
+ /** Advertise exit and abort queue. Called from worker
+ *
+ * This would happen after an unrecoverable error, or when
+ * the queue is terminated by the client. Workers never exit normally,
+ * except when the queue is shut down (at which point ok is set to
+ * false by the shutdown code anyway). The thread must return/exit
+ * immediately after calling this.
+ */
+ void workerExit()
+ {
+ const ScopeLock protect(mutex);
+
+ n_workers_exited++;
+ ok = false;
+ client_cond.broadcast();
+ }
+};
+
+#endif /* _WORKQUEUE_H_INCLUDED_ */
diff --git a/src/lib/upnp/ixmlwrap.cxx b/src/lib/upnp/ixmlwrap.cxx
new file mode 100644
index 000000000..6a2829cf9
--- /dev/null
+++ b/src/lib/upnp/ixmlwrap.cxx
@@ -0,0 +1,44 @@
+/* Copyright (C) 2013 J.F.Dockes
+ * 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.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "ixmlwrap.hxx"
+
+namespace ixmlwrap {
+
+const char *
+getFirstElementValue(IXML_Document *doc, const char *name)
+{
+ const char *ret = nullptr;
+ IXML_NodeList *nodes =
+ ixmlDocument_getElementsByTagName(doc, name);
+
+ if (nodes) {
+ IXML_Node *first = ixmlNodeList_item(nodes, 0);
+ if (first) {
+ IXML_Node *dnode = ixmlNode_getFirstChild(first);
+ if (dnode) {
+ ret = ixmlNode_getNodeValue(dnode);
+ }
+ }
+
+ ixmlNodeList_free(nodes);
+ }
+
+ return ret;
+}
+
+}
diff --git a/src/lib/upnp/ixmlwrap.hxx b/src/lib/upnp/ixmlwrap.hxx
new file mode 100644
index 000000000..0d519a323
--- /dev/null
+++ b/src/lib/upnp/ixmlwrap.hxx
@@ -0,0 +1,35 @@
+/* Copyright (C) 2013 J.F.Dockes
+ * 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.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#ifndef _IXMLWRAP_H_INCLUDED_
+#define _IXMLWRAP_H_INCLUDED_
+
+#include <upnp/ixml.h>
+
+#include <string>
+
+namespace ixmlwrap {
+ /**
+ * Retrieve the text content for the first element of given
+ * name. Returns nullptr if the element does not
+ * contain a text node
+ */
+ const char *getFirstElementValue(IXML_Document *doc,
+ const char *name);
+
+};
+
+#endif /* _IXMLWRAP_H_INCLUDED_ */
diff --git a/src/lib/upnp/upnpplib.cxx b/src/lib/upnp/upnpplib.cxx
new file mode 100644
index 000000000..27b4e0564
--- /dev/null
+++ b/src/lib/upnp/upnpplib.cxx
@@ -0,0 +1,75 @@
+/*
+ * 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 "upnpplib.hxx"
+#include "Domain.hxx"
+#include "Log.hxx"
+
+#include <upnp/ixml.h>
+#include <upnp/upnptools.h>
+
+static LibUPnP *theLib;
+
+LibUPnP::LibUPnP()
+{
+ auto code = UpnpInit(0, 0);
+ if (code != UPNP_E_SUCCESS) {
+ init_error.Format(upnp_domain, code,
+ "UpnpInit() failed: %s",
+ UpnpGetErrorMessage(code));
+ return;
+ }
+
+ UpnpSetMaxContentLength(2000*1024);
+
+ code = UpnpRegisterClient(o_callback, (void *)this, &m_clh);
+ if (code != UPNP_E_SUCCESS) {
+ init_error.Format(upnp_domain, code,
+ "UpnpRegisterClient() failed: %s",
+ UpnpGetErrorMessage(code));
+ return;
+ }
+
+ // Servers sometimes make error (e.g.: minidlna returns bad utf-8)
+ ixmlRelaxParser(1);
+}
+
+int
+LibUPnP::o_callback(Upnp_EventType et, void* evp, void* cookie)
+{
+ LibUPnP *ulib = (LibUPnP *)cookie;
+ if (ulib == nullptr) {
+ // Because the asyncsearch calls uses a null cookie.
+ ulib = theLib;
+ }
+
+ if (ulib->handler)
+ ulib->handler(et, evp);
+
+ return UPNP_E_SUCCESS;
+}
+
+LibUPnP::~LibUPnP()
+{
+ int error = UpnpFinish();
+ if (error != UPNP_E_SUCCESS)
+ FormatError(upnp_domain, "UpnpFinish() failed: %s",
+ UpnpGetErrorMessage(error));
+}
diff --git a/src/lib/upnp/upnpplib.hxx b/src/lib/upnp/upnpplib.hxx
new file mode 100644
index 000000000..6759aa16d
--- /dev/null
+++ b/src/lib/upnp/upnpplib.hxx
@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+
+#ifndef _LIBUPNP_H_X_INCLUDED_
+#define _LIBUPNP_H_X_INCLUDED_
+
+#include "util/Error.hxx"
+
+#include <upnp/upnp.h>
+
+#include <functional>
+
+/** Our link to libupnp. Initialize and keep the handle around */
+class LibUPnP {
+ typedef std::function<void(Upnp_EventType type, void *event)> Handler;
+
+ Error init_error;
+ UpnpClient_Handle m_clh;
+
+ Handler handler;
+
+ static int o_callback(Upnp_EventType, void *, void *);
+
+public:
+ LibUPnP();
+
+ LibUPnP(const LibUPnP &) = delete;
+ LibUPnP &operator=(const LibUPnP &) = delete;
+
+ ~LibUPnP();
+
+ /** Check state after initialization */
+ bool ok() const
+ {
+ return !init_error.IsDefined();
+ }
+
+ /** Retrieve init error if state not ok */
+ const Error &GetInitError() const {
+ return init_error;
+ }
+
+ template<typename T>
+ void SetHandler(T &&_handler) {
+ handler = std::forward<T>(_handler);
+ }
+
+ UpnpClient_Handle getclh()
+ {
+ return m_clh;
+ }
+};
+
+#endif /* _LIBUPNP.H_X_INCLUDED_ */
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