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mpr: Implement connected resources enumeration. 

Signed-off-by: Pierre Schweitzer <pierre@reactos.org>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Pierre Schweitzer 2016-09-12 21:48:51 +02:00 committed by Alexandre Julliard
parent 6dde77fcac
commit d9c9d9b10f
1 changed files with 176 additions and 12 deletions
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180
dlls/mpr/wnet.c
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@ -4,6 +4,7 @@
* Copyright 1999 Ulrich Weigand
* Copyright 2004 Juan Lang
* Copyright 2007 Maarten Lankhorst
* Copyright 2016 Pierre Schweitzer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -73,6 +74,7 @@ typedef struct _WNetProviderTable
#define WNET_ENUMERATOR_TYPE_GLOBAL 1
#define WNET_ENUMERATOR_TYPE_PROVIDER 2
#define WNET_ENUMERATOR_TYPE_CONTEXT 3
#define WNET_ENUMERATOR_TYPE_CONNECTED 4
/* An WNet enumerator. Note that the type doesn't correspond to the scope of
* the enumeration; it represents one of the following types:
@ -97,7 +99,11 @@ typedef struct _WNetEnumerator
DWORD dwScope;
DWORD dwType;
DWORD dwUsage;
LPNETRESOURCEW lpNet;
union
{
NETRESOURCEW* net;
HANDLE* handles;
} specific;
} WNetEnumerator, *PWNetEnumerator;
#define BAD_PROVIDER_INDEX (DWORD)0xffffffff
@ -420,7 +426,7 @@ static PWNetEnumerator _createGlobalEnumeratorW(DWORD dwScope, DWORD dwType,
ret->dwScope = dwScope;
ret->dwType = dwType;
ret->dwUsage = dwUsage;
ret->lpNet = _copyNetResourceForEnumW(lpNet);
ret->specific.net = _copyNetResourceForEnumW(lpNet);
}
return ret;
}
@ -464,6 +470,26 @@ static PWNetEnumerator _createContextEnumerator(DWORD dwScope, DWORD dwType,
return ret;
}
static PWNetEnumerator _createConnectedEnumerator(DWORD dwScope, DWORD dwType,
DWORD dwUsage)
{
PWNetEnumerator ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WNetEnumerator));
if (ret)
{
ret->enumType = WNET_ENUMERATOR_TYPE_CONNECTED;
ret->dwScope = dwScope;
ret->dwType = dwType;
ret->dwUsage = dwUsage;
ret->specific.handles = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(HANDLE) * providerTable->numProviders);
if (!ret->specific.handles)
{
HeapFree(GetProcessHeap(), 0, ret);
ret = NULL;
}
}
return ret;
}
/* Thunks the array of wide-string LPNETRESOURCEs lpNetArrayIn into buffer
* lpBuffer, with size *lpBufferSize. lpNetArrayIn contains *lpcCount entries
* to start. On return, *lpcCount reflects the number thunked into lpBuffer.
@ -824,8 +850,11 @@ DWORD WINAPI WNetOpenEnumW( DWORD dwScope, DWORD dwType, DWORD dwUsage,
*lphEnum = _createContextEnumerator(dwScope, dwType, dwUsage);
ret = *lphEnum ? WN_SUCCESS : WN_OUT_OF_MEMORY;
break;
case RESOURCE_REMEMBERED:
case RESOURCE_CONNECTED:
*lphEnum = _createConnectedEnumerator(dwScope, dwType, dwUsage);
ret = *lphEnum ? WN_SUCCESS : WN_OUT_OF_MEMORY;
break;
case RESOURCE_REMEMBERED:
*lphEnum = _createNullEnumerator();
ret = *lphEnum ? WN_SUCCESS : WN_OUT_OF_MEMORY;
break;
@ -1052,7 +1081,7 @@ static DWORD _enumerateGlobalPassthroughW(PWNetEnumerator enumerator,
{
ret = providerTable->table[enumerator->providerIndex].
openEnum(enumerator->dwScope, enumerator->dwType,
enumerator->dwUsage, enumerator->lpNet,
enumerator->dwUsage, enumerator->specific.net,
&enumerator->handle);
if (ret == WN_SUCCESS)
{
@ -1090,7 +1119,7 @@ static DWORD _enumerateGlobalW(PWNetEnumerator enumerator, LPDWORD lpcCount,
switch (enumerator->dwScope)
{
case RESOURCE_GLOBALNET:
if (enumerator->lpNet)
if (enumerator->specific.net)
ret = _enumerateGlobalPassthroughW(enumerator, lpcCount,
lpBuffer, lpBufferSize);
else
@ -1211,6 +1240,126 @@ static DWORD _enumerateContextW(PWNetEnumerator enumerator, LPDWORD lpcCount,
return ret;
}
static DWORD _copyStringToEnumW(const WCHAR *source, DWORD* left, void** end)
{
DWORD len;
WCHAR* local = *end;
len = strlenW(source) + 1;
len *= sizeof(WCHAR);
if (*left < len)
return WN_MORE_DATA;
local -= (len / sizeof(WCHAR));
memcpy(local, source, len);
*left -= len;
*end = local;
return WN_SUCCESS;
}
static DWORD _enumerateConnectedW(PWNetEnumerator enumerator, DWORD* user_count,
void* user_buffer, DWORD* user_size)
{
DWORD ret, index, count, size, i, left;
void* end;
NETRESOURCEW* curr, * buffer;
HANDLE* handles;
if (!enumerator)
return WN_BAD_POINTER;
if (enumerator->enumType != WNET_ENUMERATOR_TYPE_CONNECTED)
return WN_BAD_VALUE;
if (!user_count || !user_buffer || !user_size)
return WN_BAD_POINTER;
if (!providerTable)
return WN_NO_NETWORK;
handles = enumerator->specific.handles;
left = *user_size;
size = *user_size;
buffer = HeapAlloc(GetProcessHeap(), 0, *user_size);
if (!buffer)
return WN_NO_NETWORK;
curr = user_buffer;
end = (char *)user_buffer + size;
count = *user_count;
ret = WN_NO_MORE_ENTRIES;
for (index = 0; index < providerTable->numProviders; index++)
{
if (providerTable->table[index].dwEnumScopes)
{
if (handles[index] == 0)
{
ret = providerTable->table[index].openEnum(enumerator->dwScope,
enumerator->dwType,
enumerator->dwUsage,
NULL, &handles[index]);
if (ret != WN_SUCCESS)
continue;
}
ret = providerTable->table[index].enumResource(handles[index],
&count, buffer,
&size);
if (ret == WN_MORE_DATA)
break;
if (ret == WN_SUCCESS)
{
for (i = 0; i < count; ++i)
{
if (left < sizeof(NETRESOURCEW))
{
ret = WN_MORE_DATA;
break;
}
memcpy(curr, &buffer[i], sizeof(NETRESOURCEW));
left -= sizeof(NETRESOURCEW);
ret = _copyStringToEnumW(buffer[i].lpLocalName, &left, &end);
if (ret == WN_MORE_DATA)
break;
curr->lpLocalName = end;
ret = _copyStringToEnumW(buffer[i].lpRemoteName, &left, &end);
if (ret == WN_MORE_DATA)
break;
curr->lpRemoteName = end;
ret = _copyStringToEnumW(buffer[i].lpProvider, &left, &end);
if (ret == WN_MORE_DATA)
break;
curr->lpProvider = end;
++curr;
}
count = *user_count - count;
size = left;
}
if (ret != WN_SUCCESS || count == 0)
break;
}
}
if (count == 0)
ret = WN_NO_MORE_ENTRIES;
*user_count = *user_count - count;
if (ret != WN_MORE_DATA && ret != WN_NO_MORE_ENTRIES)
ret = WN_SUCCESS;
HeapFree(GetProcessHeap(), 0, buffer);
TRACE("Returning %d\n", ret);
return ret;
}
/*********************************************************************
* WNetEnumResourceW [MPR.@]
*/
@ -1255,6 +1404,10 @@ DWORD WINAPI WNetEnumResourceW( HANDLE hEnum, LPDWORD lpcCount,
ret = _enumerateContextW(enumerator, lpcCount, lpBuffer,
lpBufferSize);
break;
case WNET_ENUMERATOR_TYPE_CONNECTED:
ret = _enumerateConnectedW(enumerator, lpcCount, lpBuffer,
lpBufferSize);
break;
default:
WARN("bogus enumerator type!\n");
ret = WN_NO_NETWORK;
@ -1271,7 +1424,8 @@ DWORD WINAPI WNetEnumResourceW( HANDLE hEnum, LPDWORD lpcCount,
*/
DWORD WINAPI WNetCloseEnum( HANDLE hEnum )
{
DWORD ret;
DWORD ret, index;
HANDLE *handles;
TRACE( "(%p)\n", hEnum );
@ -1285,8 +1439,8 @@ DWORD WINAPI WNetCloseEnum( HANDLE hEnum )
ret = WN_SUCCESS;
break;
case WNET_ENUMERATOR_TYPE_GLOBAL:
if (enumerator->lpNet)
_freeEnumNetResource(enumerator->lpNet);
if (enumerator->specific.net)
_freeEnumNetResource(enumerator->specific.net);
if (enumerator->handle)
providerTable->table[enumerator->providerIndex].
closeEnum(enumerator->handle);
@ -1298,6 +1452,16 @@ DWORD WINAPI WNetCloseEnum( HANDLE hEnum )
closeEnum(enumerator->handle);
ret = WN_SUCCESS;
break;
case WNET_ENUMERATOR_TYPE_CONNECTED:
handles = enumerator->specific.handles;
for (index = 0; index < providerTable->numProviders; index++)
{
if (providerTable->table[index].dwEnumScopes && handles[index])
providerTable->table[index].closeEnum(handles[index]);
}
HeapFree(GetProcessHeap(), 0, handles);
ret = WN_SUCCESS;
break;
default:
WARN("bogus enumerator type!\n");
ret = WN_BAD_HANDLE;