mirror of
https://github.com/reactos/reactos.git
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522 lines
17 KiB
C
522 lines
17 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Ancillary Function Driver DLL
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* FILE: dll/win32/msafd/misc/helpers.c
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* PURPOSE: Helper DLL management
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* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
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* Alex Ionescu (alex@relsoft.net)
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* REVISIONS:
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* CSH 01/09-2000 Created
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* Alex 16/07/2004 - Complete Rewrite
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*/
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#include <msafd.h>
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#include <winreg.h>
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CRITICAL_SECTION HelperDLLDatabaseLock;
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LIST_ENTRY HelperDLLDatabaseListHead;
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INT
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SockGetTdiName(
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PINT AddressFamily,
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PINT SocketType,
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PINT Protocol,
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GROUP Group,
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DWORD Flags,
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PUNICODE_STRING TransportName,
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PVOID *HelperDllContext,
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PHELPER_DATA *HelperDllData,
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PDWORD Events)
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{
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PHELPER_DATA HelperData;
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PWSTR Transports;
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PWSTR Transport;
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PWINSOCK_MAPPING Mapping;
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PLIST_ENTRY Helpers;
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INT Status;
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TRACE("AddressFamily %p, SocketType %p, Protocol %p, Group %u, Flags %lx, TransportName %p, HelperDllContext %p, HelperDllData %p, Events %p\n",
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AddressFamily, SocketType, Protocol, Group, Flags, TransportName, HelperDllContext, HelperDllData, Events);
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/* Check in our Current Loaded Helpers */
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for (Helpers = SockHelpersListHead.Flink;
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Helpers != &SockHelpersListHead;
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Helpers = Helpers->Flink ) {
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HelperData = CONTAINING_RECORD(Helpers, HELPER_DATA, Helpers);
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/* See if this Mapping works for us */
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if (SockIsTripleInMapping (HelperData->Mapping,
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*AddressFamily,
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*SocketType,
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*Protocol)) {
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/* Call the Helper Dll function get the Transport Name */
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if (HelperData->WSHOpenSocket2 == NULL ) {
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/* DLL Doesn't support WSHOpenSocket2, call the old one */
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HelperData->WSHOpenSocket(AddressFamily,
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SocketType,
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Protocol,
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TransportName,
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HelperDllContext,
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Events
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);
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} else {
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HelperData->WSHOpenSocket2(AddressFamily,
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SocketType,
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Protocol,
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Group,
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Flags,
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TransportName,
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HelperDllContext,
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Events
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);
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}
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/* Return the Helper Pointers */
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*HelperDllData = HelperData;
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return NO_ERROR;
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}
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}
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/* Get the Transports available */
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Status = SockLoadTransportList(&Transports);
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/* Check for error */
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if (Status) {
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WARN("Can't get transport list\n");
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return Status;
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}
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/* Loop through each transport until we find one that can satisfy us */
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for (Transport = Transports;
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*Transports != 0;
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Transport += wcslen(Transport) + 1) {
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TRACE("Transport: %S\n", Transports);
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/* See what mapping this Transport supports */
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Status = SockLoadTransportMapping(Transport, &Mapping);
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/* Check for error */
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if (Status) {
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ERR("Can't get mapping for %S\n", Transports);
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HeapFree(GlobalHeap, 0, Transports);
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return Status;
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}
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/* See if this Mapping works for us */
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if (SockIsTripleInMapping(Mapping, *AddressFamily, *SocketType, *Protocol)) {
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/* It does, so load the DLL associated with it */
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Status = SockLoadHelperDll(Transport, Mapping, &HelperData);
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/* Check for error */
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if (Status) {
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ERR("Can't load helper DLL for Transport %S.\n", Transport);
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HeapFree(GlobalHeap, 0, Transports);
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HeapFree(GlobalHeap, 0, Mapping);
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return Status;
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}
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/* Call the Helper Dll function get the Transport Name */
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if (HelperData->WSHOpenSocket2 == NULL) {
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/* DLL Doesn't support WSHOpenSocket2, call the old one */
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HelperData->WSHOpenSocket(AddressFamily,
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SocketType,
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Protocol,
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TransportName,
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HelperDllContext,
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Events
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);
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} else {
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HelperData->WSHOpenSocket2(AddressFamily,
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SocketType,
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Protocol,
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Group,
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Flags,
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TransportName,
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HelperDllContext,
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Events
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);
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}
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/* Return the Helper Pointers */
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*HelperDllData = HelperData;
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/* We actually cache these ... the can't be freed yet */
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/*HeapFree(GlobalHeap, 0, Transports);*/
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/*HeapFree(GlobalHeap, 0, Mapping);*/
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return NO_ERROR;
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}
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HeapFree(GlobalHeap, 0, Mapping);
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}
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HeapFree(GlobalHeap, 0, Transports);
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return WSAEINVAL;
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}
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INT
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SockLoadTransportMapping(
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PWSTR TransportName,
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PWINSOCK_MAPPING *Mapping)
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{
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PWSTR TransportKey;
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HKEY KeyHandle;
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ULONG MappingSize;
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LONG Status;
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TRACE("TransportName %ws\n", TransportName);
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/* Allocate a Buffer */
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TransportKey = HeapAlloc(GlobalHeap, 0, (54 + wcslen(TransportName)) * sizeof(WCHAR));
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/* Check for error */
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if (TransportKey == NULL) {
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ERR("Buffer allocation failed\n");
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return WSAEINVAL;
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}
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/* Generate the right key name */
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wcscpy(TransportKey, L"System\\CurrentControlSet\\Services\\");
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wcscat(TransportKey, TransportName);
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wcscat(TransportKey, L"\\Parameters\\Winsock");
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/* Open the Key */
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Status = RegOpenKeyExW(HKEY_LOCAL_MACHINE, TransportKey, 0, KEY_READ, &KeyHandle);
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/* We don't need the Transport Key anymore */
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HeapFree(GlobalHeap, 0, TransportKey);
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/* Check for error */
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if (Status) {
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ERR("Error reading transport mapping registry\n");
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return WSAEINVAL;
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}
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/* Find out how much space we need for the Mapping */
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Status = RegQueryValueExW(KeyHandle, L"Mapping", NULL, NULL, NULL, &MappingSize);
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/* Check for error */
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if (Status) {
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ERR("Error reading transport mapping registry\n");
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return WSAEINVAL;
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}
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/* Allocate Memory for the Mapping */
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*Mapping = HeapAlloc(GlobalHeap, 0, MappingSize);
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/* Check for error */
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if (*Mapping == NULL) {
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ERR("Buffer allocation failed\n");
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return WSAEINVAL;
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}
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/* Read the Mapping */
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Status = RegQueryValueExW(KeyHandle, L"Mapping", NULL, NULL, (LPBYTE)*Mapping, &MappingSize);
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/* Check for error */
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if (Status) {
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ERR("Error reading transport mapping registry\n");
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HeapFree(GlobalHeap, 0, *Mapping);
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return WSAEINVAL;
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}
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/* Close key and return */
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RegCloseKey(KeyHandle);
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return 0;
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}
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INT
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SockLoadTransportList(
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PWSTR *TransportList)
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{
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ULONG TransportListSize;
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HKEY KeyHandle;
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LONG Status;
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TRACE("Called\n");
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/* Open the Transports Key */
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Status = RegOpenKeyExW (HKEY_LOCAL_MACHINE,
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L"SYSTEM\\CurrentControlSet\\Services\\Winsock\\Parameters",
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0,
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KEY_READ,
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&KeyHandle);
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/* Check for error */
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if (Status) {
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ERR("Error reading transport list registry\n");
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return WSAEINVAL;
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}
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/* Get the Transport List Size */
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Status = RegQueryValueExW(KeyHandle,
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L"Transports",
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NULL,
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NULL,
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NULL,
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&TransportListSize);
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/* Check for error */
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if (Status) {
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ERR("Error reading transport list registry\n");
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return WSAEINVAL;
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}
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/* Allocate Memory for the Transport List */
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*TransportList = HeapAlloc(GlobalHeap, 0, TransportListSize);
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/* Check for error */
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if (*TransportList == NULL) {
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ERR("Buffer allocation failed\n");
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return WSAEINVAL;
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}
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/* Get the Transports */
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Status = RegQueryValueExW (KeyHandle,
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L"Transports",
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NULL,
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NULL,
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(LPBYTE)*TransportList,
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&TransportListSize);
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/* Check for error */
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if (Status) {
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ERR("Error reading transport list registry\n");
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HeapFree(GlobalHeap, 0, *TransportList);
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return WSAEINVAL;
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}
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/* Close key and return */
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RegCloseKey(KeyHandle);
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return 0;
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}
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INT
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SockLoadHelperDll(
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PWSTR TransportName,
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PWINSOCK_MAPPING Mapping,
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PHELPER_DATA *HelperDllData)
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{
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PHELPER_DATA HelperData;
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PWSTR HelperDllName;
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PWSTR FullHelperDllName;
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PWSTR HelperKey;
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HKEY KeyHandle;
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ULONG DataSize;
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LONG Status;
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/* Allocate space for the Helper Structure and TransportName */
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HelperData = HeapAlloc(GlobalHeap, 0, sizeof(*HelperData) + (wcslen(TransportName) + 1) * sizeof(WCHAR));
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/* Check for error */
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if (HelperData == NULL) {
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ERR("Buffer allocation failed\n");
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return WSAEINVAL;
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}
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/* Allocate Space for the Helper DLL Key */
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HelperKey = HeapAlloc(GlobalHeap, 0, (54 + wcslen(TransportName)) * sizeof(WCHAR));
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/* Check for error */
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if (HelperKey == NULL) {
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ERR("Buffer allocation failed\n");
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HeapFree(GlobalHeap, 0, HelperData);
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return WSAEINVAL;
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}
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/* Generate the right key name */
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wcscpy(HelperKey, L"System\\CurrentControlSet\\Services\\");
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wcscat(HelperKey, TransportName);
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wcscat(HelperKey, L"\\Parameters\\Winsock");
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/* Open the Key */
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Status = RegOpenKeyExW(HKEY_LOCAL_MACHINE, HelperKey, 0, KEY_READ, &KeyHandle);
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HeapFree(GlobalHeap, 0, HelperKey);
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/* Check for error */
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if (Status) {
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ERR("Error reading helper DLL parameters\n");
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HeapFree(GlobalHeap, 0, HelperData);
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return WSAEINVAL;
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}
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/* Read Size of SockAddr Structures */
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DataSize = sizeof(HelperData->MinWSAddressLength);
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HelperData->MinWSAddressLength = 16;
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RegQueryValueExW (KeyHandle,
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L"MinSockaddrLength",
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NULL,
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NULL,
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(LPBYTE)&HelperData->MinWSAddressLength,
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&DataSize);
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DataSize = sizeof(HelperData->MinWSAddressLength);
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HelperData->MaxWSAddressLength = 16;
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RegQueryValueExW (KeyHandle,
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L"MaxSockaddrLength",
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NULL,
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NULL,
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(LPBYTE)&HelperData->MaxWSAddressLength,
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&DataSize);
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/* Size of TDI Structures */
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HelperData->MinTDIAddressLength = HelperData->MinWSAddressLength + 6;
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HelperData->MaxTDIAddressLength = HelperData->MaxWSAddressLength + 6;
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/* Read Delayed Acceptance Setting */
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DataSize = sizeof(DWORD);
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HelperData->UseDelayedAcceptance = FALSE;
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RegQueryValueExW (KeyHandle,
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L"UseDelayedAcceptance",
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NULL,
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NULL,
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(LPBYTE)&HelperData->UseDelayedAcceptance,
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&DataSize);
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/* Allocate Space for the Helper DLL Names */
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HelperDllName = HeapAlloc(GlobalHeap, 0, 512);
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/* Check for error */
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if (HelperDllName == NULL) {
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ERR("Buffer allocation failed\n");
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HeapFree(GlobalHeap, 0, HelperData);
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return WSAEINVAL;
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}
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FullHelperDllName = HeapAlloc(GlobalHeap, 0, 512);
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/* Check for error */
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if (FullHelperDllName == NULL) {
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ERR("Buffer allocation failed\n");
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HeapFree(GlobalHeap, 0, HelperDllName);
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HeapFree(GlobalHeap, 0, HelperData);
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return WSAEINVAL;
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}
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/* Get the name of the Helper DLL*/
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DataSize = 512;
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Status = RegQueryValueExW (KeyHandle,
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L"HelperDllName",
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NULL,
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NULL,
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(LPBYTE)HelperDllName,
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&DataSize);
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/* Check for error */
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if (Status) {
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ERR("Error reading helper DLL parameters\n");
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HeapFree(GlobalHeap, 0, FullHelperDllName);
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HeapFree(GlobalHeap, 0, HelperDllName);
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HeapFree(GlobalHeap, 0, HelperData);
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return WSAEINVAL;
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}
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/* Get the Full name, expanding Environment Strings */
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ExpandEnvironmentStringsW (HelperDllName,
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FullHelperDllName,
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256);
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/* Load the DLL */
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HelperData->hInstance = LoadLibraryW(FullHelperDllName);
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HeapFree(GlobalHeap, 0, HelperDllName);
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HeapFree(GlobalHeap, 0, FullHelperDllName);
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if (HelperData->hInstance == NULL) {
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ERR("Error loading helper DLL\n");
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HeapFree(GlobalHeap, 0, HelperData);
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return WSAEINVAL;
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}
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/* Close Key */
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RegCloseKey(KeyHandle);
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/* Get the Pointers to the Helper Routines */
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HelperData->WSHOpenSocket = (PWSH_OPEN_SOCKET)
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GetProcAddress(HelperData->hInstance,
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"WSHOpenSocket");
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HelperData->WSHOpenSocket2 = (PWSH_OPEN_SOCKET2)
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GetProcAddress(HelperData->hInstance,
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"WSHOpenSocket2");
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HelperData->WSHJoinLeaf = (PWSH_JOIN_LEAF)
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GetProcAddress(HelperData->hInstance,
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"WSHJoinLeaf");
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HelperData->WSHNotify = (PWSH_NOTIFY)
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GetProcAddress(HelperData->hInstance, "WSHNotify");
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HelperData->WSHGetSocketInformation = (PWSH_GET_SOCKET_INFORMATION)
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GetProcAddress(HelperData->hInstance,
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"WSHGetSocketInformation");
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HelperData->WSHSetSocketInformation = (PWSH_SET_SOCKET_INFORMATION)
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GetProcAddress(HelperData->hInstance,
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"WSHSetSocketInformation");
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HelperData->WSHGetSockaddrType = (PWSH_GET_SOCKADDR_TYPE)
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GetProcAddress(HelperData->hInstance,
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"WSHGetSockaddrType");
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HelperData->WSHGetWildcardSockaddr = (PWSH_GET_WILDCARD_SOCKADDR)
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GetProcAddress(HelperData->hInstance,
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"WSHGetWildcardSockaddr");
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HelperData->WSHGetBroadcastSockaddr = (PWSH_GET_BROADCAST_SOCKADDR)
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GetProcAddress(HelperData->hInstance,
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"WSHGetBroadcastSockaddr");
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HelperData->WSHAddressToString = (PWSH_ADDRESS_TO_STRING)
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GetProcAddress(HelperData->hInstance,
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"WSHAddressToString");
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HelperData->WSHStringToAddress = (PWSH_STRING_TO_ADDRESS)
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GetProcAddress(HelperData->hInstance,
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"WSHStringToAddress");
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HelperData->WSHIoctl = (PWSH_IOCTL)
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GetProcAddress(HelperData->hInstance,
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"WSHIoctl");
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/* Save the Mapping Structure and transport name */
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HelperData->Mapping = Mapping;
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wcscpy(HelperData->TransportName, TransportName);
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/* Increment Reference Count */
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HelperData->RefCount = 1;
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/* Add it to our list */
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InsertHeadList(&SockHelpersListHead, &HelperData->Helpers);
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/* Return Pointers */
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*HelperDllData = HelperData;
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return 0;
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}
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BOOL
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SockIsTripleInMapping(
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PWINSOCK_MAPPING Mapping,
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INT AddressFamily,
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INT SocketType,
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INT Protocol)
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{
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/* The Windows version returns more detailed information on which of the 3 parameters failed...we should do this later */
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ULONG Row;
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TRACE("Called, Mapping rows = %d\n", Mapping->Rows);
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/* Loop through Mapping to Find a matching one */
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for (Row = 0; Row < Mapping->Rows; Row++) {
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TRACE("Examining: row %d: AF %d type %d proto %d\n",
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Row,
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(INT)Mapping->Mapping[Row].AddressFamily,
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(INT)Mapping->Mapping[Row].SocketType,
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(INT)Mapping->Mapping[Row].Protocol);
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/* Check of all three values Match */
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if (((INT)Mapping->Mapping[Row].AddressFamily == AddressFamily) &&
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((INT)Mapping->Mapping[Row].SocketType == SocketType) &&
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((INT)Mapping->Mapping[Row].Protocol == Protocol)) {
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TRACE("Found\n");
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return TRUE;
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}
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}
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WARN("Not found\n");
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return FALSE;
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}
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/* EOF */
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