I have tried with WSDDeviceProxy & in that particularly GetMetadata, i am getting all printer information except the IP Address. in one site i have read that IP can be get through IWSDDiscoveredDevice but How create IWSDDiscoveredDevice ?
Asked
Active
Viewed 3,021 times
1 Answers
0
Some time ago I faced a similar issue: find the transport address of the installed WSD printing queue. The good point to start from is to read the specification: http://docs.oasis-open.org/ws-dd/discovery/1.1/wsdd-discovery-1.1-spec.pdf.
If you deal with the installed WSD printer queue, you have printer UUID and may simply send a Resolve request and listen for the ResolveMatch response. The simplest practical way is:
- Get the printer queue port name via EnumPrinters (I used level 5)
- Get the port monitor via EnumPorts
- Get the "Printer UUID" from the registry path
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Monitors\WSD Port\Ports<YOUR_PORT_NAME>
Send UDP packet to address 239.255.255.250 port 3702 with utf-8 encoded data
<soap:Envelope xmlns:soap=""http://www.w3.org/2003/05/soap-envelope"" xmlns:wsa=""http://schemas.xmlsoap.org/ws/2004/08/addressing"" xmlns:wsd=""http://schemas.xmlsoap.org/ws/2005/04/discovery""> <soap:Header> <wsa:To>urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To> <wsa:Action>http://schemas.xmlsoap.org/ws/2005/04/discovery/Resolve</wsa:Action> <wsa:MessageID>{0}</wsa:MessageID> </soap:Header> <soap:Body> <wsd:Resolve> <wsa:EndpointReference> <wsa:Address>{1}</wsa:Address> </wsa:EndpointReference> </wsd:Resolve> </soap:Body> </soap:Envelope>"
where messageId is urn:uuid:<GENERATED_GUID> and address is urn:uuid:<PRINTER_UUID>
Receive UDP unicast response
Tranport addresses is stored inside
<wsd:XAddrs>
Example ResolveMatch:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:wsd="http://schemas.xmlsoap.org/ws/2005/04/discovery" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsdp="http://schemas.xmlsoap.org/ws/2006/02/devprof" xmlns:wsvc0="http://schemas.microsoft.com/windows/2006/08/wdp/scan" xmlns:wsvc1="http://schemas.microsoft.com/windows/2006/08/wdp/print">
<soap:Header>
<wsa:Action>http://schemas.xmlsoap.org/ws/2005/04/discovery/ResolveMatches</wsa:Action>
<wsa:MessageID>urn:uuid:d8a491ad-0d87-4429-b900-84f102a91097</wsa:MessageID>
<wsa:RelatesTo>urn:uuid:8fc371bb-edfb-49a4-b631-7e5264e25c20</wsa:RelatesTo>
<wsa:To>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:To>
<wsd:AppSequence InstanceId="1529651446" MessageNumber="1790"/>
</soap:Header>
<soap:Body>
<wsd:ResolveMatches>
<wsd:ResolveMatch>
<wsa:EndpointReference>
<wsa:Address>urn:uuid:edec3c87-cfbc-4b02-bcb8-077be723bd32</wsa:Address>
</wsa:EndpointReference>
<wsd:XAddrs>http://192.168.1.101:65001 http://[fe80::221:b7ff:fe19:8a4a]:65001</wsd:XAddrs>
<wsd:MetadataVersion>168</wsd:MetadataVersion>
</wsd:ResolveMatch>
</wsd:ResolveMatches>
</soap:Body>
</soap:Envelope>
If you don't deal with the installed printing queue, you have to perform a Probe request, listen to ProbeMatch and only then go for Resolve / ResolveMatch.
I ended up with fully managed minimal solution in 200 lines. In case you are looking for WSDAAPI have a look at the below sample (just an idea, surely not production ready):
WSDiscoveryProviderNotifier.cpp:
#include <Wsdapi.h>
#include <Wsddisco.h>
#include "guid_helper.h"
import std.core;
constexpr const IID IID_WSDiscoveryProviderNotifier = guid_parse::make_guid("{EFECF0A1-399E-40B8-A13C-ACE28DB40212}");
class WSDiscoveryProviderNotifier : public IWSDiscoveryProviderNotify {
private:
LONG referenceCount = 0;
public:
/* IUnknown */
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, LPVOID *ppvObj) override {
// Always set out parameter to NULL, validating it first.
if (!ppvObj)
return E_INVALIDARG;
*ppvObj = nullptr;
if (riid == IID_IUnknown || riid == IID_WSDiscoveryProviderNotifier) {
// Increment the reference count and return the pointer.
*ppvObj = (LPVOID) this;
AddRef();
return NOERROR;
}
return E_NOINTERFACE;
}
ULONG STDMETHODCALLTYPE AddRef() override {
InterlockedIncrement(&referenceCount);
return referenceCount;
};
ULONG STDMETHODCALLTYPE Release() override {
ULONG ulRefCount = InterlockedDecrement(&referenceCount);
if (0 == ulRefCount)
{
delete this;
}
return ulRefCount;
};
/* IWSDiscoveryProviderNotify */
HRESULT STDMETHODCALLTYPE SearchFailed(
/* [in] */ HRESULT hr,
/* [annotation][optional][in] */
_In_opt_ LPCWSTR pszTag) override {
std::wcout << "Search failed" << std::endl;
return S_OK;
}
HRESULT STDMETHODCALLTYPE SearchComplete(
/* [annotation][optional][in] */
_In_opt_ LPCWSTR pszTag) override {
std::wcout << "Search completed" << std::endl;;
return S_OK;
}
HRESULT STDMETHODCALLTYPE Add (/* [in] */ IWSDiscoveredService *pService) override {
WSD_URI_LIST *uriList;
pService->GetXAddrs(&uriList);
WSD_URI_LIST *currentElement = uriList;
do {
std::wcout << currentElement->Element << std::endl;
currentElement = currentElement->Next;
}
while (currentElement != nullptr);
return S_OK;
}
HRESULT STDMETHODCALLTYPE Remove(/* [in] */ IWSDiscoveredService *pService) override {
return S_OK;
};
};
main.cpp:
#include <Wsdxml.h>
#include "WSDiscoveryProviderNotifier.cpp"
void ResolveWSDDeviceById(LPCWSTR deviceId) {
HRESULT hr = S_OK;
IWSDXMLContext *context = nullptr;
IWSDiscoveryProvider *discoveryProvider = nullptr;
IWSDiscoveryProviderNotify *providerNotifier = new WSDiscoveryProviderNotifier();
hr = WSDCreateDiscoveryProvider(context, &discoveryProvider);
if (S_OK == hr) {
std::wcout << "WSDCreateDiscoveryProvider reported success" << std::endl;
discoveryProvider->Attach(providerNotifier);
discoveryProvider->SearchById(deviceId, nullptr);
} else {
throw std::exception("Failed to create IWSDiscoveryProvider");
}
}
int main() {
std::cout << "Hello, World!" << std::endl;
ResolveWSDDeviceById(L"urn:uuid:edec3c87-cfbc-4b02-bcb8-077be723bd32");
std::string _;
std::getline (std::cin,_);
return 0;
}
Hope this helps somebody.
metacube
- 328
- 3
- 14