From fb59fa59688f52b6616acae6baa55883f620d30e Mon Sep 17 00:00:00 2001
From: methodus <methodus@web.de>
Date: Sat, 24 Nov 2012 17:51:02 +0100
Subject: Improved plugin loader. This makes linking of the upnp plugin from
 sub plugins obsolete.

---
 media/mediaManager.cpp  | 12 ++----------
 media/pluginManager.cpp | 25 +++++++++++++++++++++++--
 2 files changed, 25 insertions(+), 12 deletions(-)

(limited to 'media')

diff --git a/media/mediaManager.cpp b/media/mediaManager.cpp
index 7064daa..670a158 100644
--- a/media/mediaManager.cpp
+++ b/media/mediaManager.cpp
@@ -21,8 +21,6 @@
 
 namespace upnp {
 
-#define DEFAULTPLUGINDIR PLUGINDIR
-
 static const char* DIDLFragment = "<DIDL-Lite "
                                   "xmlns=\"urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/\" "
                                   "xmlns:dc=\"http://purl.org/dc/elements/1.1/\" "
@@ -107,7 +105,6 @@ void cResourceStreamer::Close(){
 
 cMediaManager::cMediaManager()
 : systemUpdateID(0)
-, pluginDirectory(DEFAULTPLUGINDIR)
 , pluginManager(NULL)
 {
   SetDatabaseDir(string());
@@ -597,8 +594,8 @@ bool cMediaManager::Initialise(){
   dsyslog("UPnP\tLoading Plugins...");
   pluginManager = new upnp::cPluginManager();
 
-  if(!pluginManager->LoadPlugins(pluginDirectory)){
-    esyslog("UPnP\tError while loading upnp plugin directory '%s'", pluginDirectory.c_str());
+  if(!pluginManager->LoadPlugins()){
+    esyslog("UPnP\tError while loading upnp plugins");
     return false;
   } else {
     dsyslog("UPnP\tFound %d plugins", pluginManager->Count());
@@ -721,11 +718,6 @@ void cMediaManager::SetDatabaseDir(const string& file){
   databaseFile += "/metadata.db";
 }
 
-void cMediaManager::SetPluginDirectory(const string& directory){
-  if(directory.empty()) pluginDirectory = DEFAULTPLUGINDIR;
-  else pluginDirectory = directory;
-}
-
 void cMediaManager::Action(){
   string uri;
   while(!scanTargets.empty()){
diff --git a/media/pluginManager.cpp b/media/pluginManager.cpp
index 38be5d4..cd31be3 100644
--- a/media/pluginManager.cpp
+++ b/media/pluginManager.cpp
@@ -312,9 +312,13 @@ void cUPnPResourceProvider::OnContainerUpdate(const string& uri, long int cUID,
 void cUPnPResourceProvider::Action(){}
 
 upnp::cPluginManager::cPluginManager()
+: selfhandle(NULL)
 {}
 
-upnp::cPluginManager::~cPluginManager(){}
+upnp::cPluginManager::~cPluginManager(){
+  if(selfhandle)
+    dlclose(selfhandle);
+}
 
 const cPluginManager::ProfilerList& upnp::cPluginManager::GetProfilers() const {
   return profilers;
@@ -338,10 +342,27 @@ cUPnPResourceProvider* upnp::cPluginManager::CreateProvider(const string& schema
 #define UPNPPLUGIN_PREFIX "libupnp-"
 #define SO_INDICATOR      ".so."
 
-bool upnp::cPluginManager::LoadPlugins(const string& directory){
+bool upnp::cPluginManager::LoadPlugins(){
+
+  Dl_info info;
+  static int marker=0;
+  if(!dladdr((void *)&marker,&info)) {
+    esyslog("UPnP\tError while getting information about myself: %s", dlerror());
+    return false;
+  }
+
+  selfhandle = dlopen(info.dli_fname,RTLD_NOW|RTLD_GLOBAL);
+  if(!selfhandle) {
+    esyslog("Error while opening myself: %s",dlerror());
+    return false;
+  }
 
   DIR* dirHandle;
   struct dirent* dirEntry;
+  string library = info.dli_fname;
+  string directory = library.substr(0, library.find_last_of('/'));
+
+  dsyslog("UPnP\tScanning %s for plugins.", directory.c_str());
 
   if((dirHandle = opendir(directory.c_str())) == NULL){
     return false;
-- 
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