/*----------------------------------------------------------------------
| PLT_MediaServer::ParseTagList
+---------------------------------------------------------------------*/
NPT_Result
PLT_MediaServer::ParseTagList(const NPT_String& updates, NPT_Map<NPT_String,NPT_String>& tags)
{
// reset output params first
tags.Clear();
NPT_List<NPT_String> split = updates.Split(",");
NPT_XmlNode* node = NULL;
NPT_XmlElementNode* didl_partial = NULL;
NPT_XmlParser parser;
// as these are single name value pairs, separated by commas we wrap in a tag
// to create a valid tree
NPT_String xml("<TagValueList>");
for (NPT_List<NPT_String>::Iterator entry = split.GetFirstItem(); entry; entry++) {
NPT_String& element = (*entry);
if (element.IsEmpty())
xml.Append("<empty>empty</empty>");
else
xml.Append(element);
}
xml.Append("</TagValueList>");
NPT_LOG_FINE("Parsing TagList...");
NPT_CHECK_LABEL_SEVERE(parser.Parse(xml, node), cleanup);
if (!node || !node->AsElementNode()) {
NPT_LOG_SEVERE("Invalid node type");
goto cleanup;
}
didl_partial = node->AsElementNode();
if (didl_partial->GetTag().Compare("TagValueList", true)) {
NPT_LOG_SEVERE("Invalid node tag");
goto cleanup;
}
for (NPT_List<NPT_XmlNode*>::Iterator children = didl_partial->GetChildren().GetFirstItem(); children; children++) {
NPT_XmlElementNode* child = (*children)->AsElementNode();
if (!child) continue;
tags[child->GetTag()] = *child->GetText();
}
return NPT_SUCCESS;
cleanup:
if (node) delete node;
return NPT_FAILURE;
}
/*----------------------------------------------------------------------
| CMediaCrawler::UpdateDidl
+---------------------------------------------------------------------*/
NPT_String
CMediaCrawler::UpdateDidl(const char* server_uuid, const NPT_String& didl, NPT_SocketInfo* info)
{
NPT_String new_didl;
NPT_String str;
NPT_XmlNode* node = NULL;
NPT_XmlWriter writer;
NPT_OutputStreamReference stream(new NPT_StringOutputStream(&new_didl));
NPT_LOG_FINE("Parsing Didl...");
NPT_XmlElementNode* tree = NULL;
NPT_XmlParser parser;
if (NPT_FAILED(parser.Parse(didl, node)) || !node || !node->AsElementNode()) {
goto cleanup;
}
tree = node->AsElementNode();
NPT_LOG_FINE("Processing Didl xml...");
if (tree->GetTag().Compare("DIDL-Lite", true)) {
goto cleanup;
}
// iterate through children
NPT_Result res;
for (NPT_List<NPT_XmlNode*>::Iterator children = tree->GetChildren().GetFirstItem(); children; children++) {
NPT_XmlElementNode* child = (*children)->AsElementNode();
if (!child) continue;
// object id remapping
NPT_XmlAttribute* attribute_id;
res = PLT_XmlHelper::GetAttribute(child, "id", attribute_id);
if (NPT_SUCCEEDED(res) && attribute_id) {
attribute_id->SetValue(FormatObjectId(server_uuid, attribute_id->GetValue()));
}
// parent ID remapping
NPT_XmlAttribute* attribute_parent_id;
res = PLT_XmlHelper::GetAttribute(child, "parentID", attribute_parent_id);
if (NPT_SUCCEEDED(res)) {
attribute_parent_id->SetValue(attribute_parent_id->GetValue().Compare("-1")?FormatObjectId(server_uuid, attribute_parent_id->GetValue()):"0");
}
// resources remapping
NPT_Array<NPT_XmlElementNode*> res;
PLT_XmlHelper::GetChildren(child, res, "res");
if (res.GetItemCount() > 0) {
for (unsigned int i=0; i<res.GetItemCount(); i++) {
NPT_XmlElementNode* resource = res[i];
NPT_XmlAttribute* attribute_prot;
const NPT_String* url;
if (NPT_SUCCEEDED(PLT_XmlHelper::GetAttribute(resource, "protocolInfo", attribute_prot)) && (url = resource->GetText())) {
// special case for Windows Media Connect
// When a browse is done on the same machine, WMC uses localhost
// instead of the IP for all resources urls which means we cannot advertise that
// since it would be useless for a remote device
// so we try to replace it with the right IP address by looking at which interface we received the
// initial browse request on to make sure the remote device will be able to access the modified resource
// urls (in case the local PC has more than 1 NICs)
// replace the url
NPT_List<NPT_XmlNode*>& children = resource->GetChildren();
NPT_HttpUrl http_url(NPT_Uri::PercentDecode(*url));
if ((http_url.GetHost() == "localhost" || http_url.GetHost() == "127.0.0.1") && info) {
if (info->local_address.GetIpAddress().AsLong()) {
http_url.SetHost(info->local_address.GetIpAddress().ToString());
// replace text
children.Apply(NPT_ObjectDeleter<NPT_XmlNode>());
children.Clear();
resource->AddText(http_url.ToString());
url = resource->GetText();
}
}
CStreamHandler* handler = NULL;
NPT_Result res = NPT_ContainerFind(m_StreamHandlers, CStreamHandlerFinder(attribute_prot->GetValue(), *url), handler);
if (NPT_SUCCEEDED(res)) {
handler->ModifyResource(resource);
}
}
}
}
}
// serialize modified node into new didl
writer.Serialize(*node, *stream);
delete node;
return new_didl;
cleanup:
delete node;
return didl;
}
