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[MPR]

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Implement connected resources enumeration
To be sent upstream.

Patch 6/6

CORE-11757
ROSAPPS-303

svn path=/trunk/; revision=72087
This commit is contained in:
Pierre Schweitzer 2016-08-02 10:04:19 +00:00
parent d833fdc50e
commit 0549e22a98
1 changed files with 184 additions and 8 deletions
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192
reactos/dll/win32/mpr/wnet.c
View file

@ -90,7 +90,7 @@ typedef struct _WNetEnumerator
DWORD dwScope;
DWORD dwType;
DWORD dwUsage;
LPNETRESOURCEW lpNet;
LPVOID lpBuffer;
} WNetEnumerator, *PWNetEnumerator;
#define BAD_PROVIDER_INDEX (DWORD)0xffffffff
@ -416,7 +416,7 @@ static PWNetEnumerator _createGlobalEnumeratorW(DWORD dwScope, DWORD dwType,
ret->dwScope = dwScope;
ret->dwType = dwType;
ret->dwUsage = dwUsage;
ret->lpNet = _copyNetResourceForEnumW(lpNet);
ret->lpBuffer = _copyNetResourceForEnumW(lpNet);
}
return ret;
}
@ -460,6 +460,28 @@ 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->lpBuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(HANDLE) * providerTable->numProviders);
if (!ret->lpBuffer)
{
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.
@ -821,10 +843,13 @@ DWORD WINAPI WNetOpenEnumW( DWORD dwScope, DWORD dwType, DWORD dwUsage,
ret = *lphEnum ? WN_SUCCESS : WN_OUT_OF_MEMORY;
break;
case RESOURCE_REMEMBERED:
case RESOURCE_CONNECTED:
*lphEnum = _createNullEnumerator();
ret = *lphEnum ? WN_SUCCESS : WN_OUT_OF_MEMORY;
break;
case RESOURCE_CONNECTED:
*lphEnum = _createConnectedEnumerator(dwScope, dwType, dwUsage);
ret = *lphEnum ? WN_SUCCESS : WN_OUT_OF_MEMORY;
break;
default:
WARN("unknown scope 0x%08x\n", dwScope);
ret = WN_BAD_VALUE;
@ -1048,7 +1073,7 @@ static DWORD _enumerateGlobalPassthroughW(PWNetEnumerator enumerator,
{
ret = providerTable->table[enumerator->providerIndex].
openEnum(enumerator->dwScope, enumerator->dwType,
enumerator->dwUsage, enumerator->lpNet,
enumerator->dwUsage, enumerator->lpBuffer,
&enumerator->handle);
if (ret == WN_SUCCESS)
{
@ -1086,7 +1111,7 @@ static DWORD _enumerateGlobalW(PWNetEnumerator enumerator, LPDWORD lpcCount,
switch (enumerator->dwScope)
{
case RESOURCE_GLOBALNET:
if (enumerator->lpNet)
if (enumerator->lpBuffer)
ret = _enumerateGlobalPassthroughW(enumerator, lpcCount,
lpBuffer, lpBufferSize);
else
@ -1207,6 +1232,143 @@ static DWORD _enumerateContextW(PWNetEnumerator enumerator, LPDWORD lpcCount,
return ret;
}
static DWORD _enumerateConnectedW(PWNetEnumerator enumerator, LPDWORD lpcCount,
LPVOID lpBuffer, LPDWORD lpBufferSize)
{
DWORD ret, index, count, size, i, len, left;
PVOID end;
LPNETRESOURCEW curr, buffer;
PHANDLE handles;
if (!enumerator)
return WN_BAD_POINTER;
if (enumerator->enumType != WNET_ENUMERATOR_TYPE_CONNECTED)
return WN_BAD_VALUE;
if (!lpcCount)
return WN_BAD_POINTER;
if (!lpBuffer)
return WN_BAD_POINTER;
if (!lpBufferSize)
return WN_BAD_POINTER;
if (!providerTable)
return WN_NO_NETWORK;
handles = enumerator->lpBuffer;
left = *lpBufferSize;
size = *lpBufferSize;
buffer = HeapAlloc(GetProcessHeap(), 0, *lpBufferSize);
if (!buffer)
return WN_NO_NETWORK;
curr = lpBuffer;
end = (PVOID)((ULONG_PTR)lpBuffer + size);
count = *lpcCount;
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);
len = WideCharToMultiByte(CP_ACP, 0, buffer[i].lpLocalName, -1, NULL, 0, NULL, NULL);
len *= sizeof(WCHAR);
if (left < len)
{
ret = WN_MORE_DATA;
break;
}
end = (PVOID)((ULONG_PTR)end - len);
curr->lpLocalName = end;
memcpy(end, buffer[i].lpLocalName, len);
left -= len;
len = WideCharToMultiByte(CP_ACP, 0, buffer[i].lpRemoteName, -1, NULL, 0, NULL, NULL);
len *= sizeof(WCHAR);
if (left < len)
{
ret = WN_MORE_DATA;
break;
}
end = (PVOID)((ULONG_PTR)end - len);
curr->lpRemoteName = end;
memcpy(end, buffer[i].lpRemoteName, len);
left -= len;
len = WideCharToMultiByte(CP_ACP, 0, buffer[i].lpProvider, -1, NULL, 0, NULL, NULL);
len *= sizeof(WCHAR);
if (left < len)
{
ret = WN_MORE_DATA;
break;
}
end = (PVOID)((ULONG_PTR)end - len);
curr->lpProvider = end;
memcpy(end, buffer[i].lpProvider, len);
left -= len;
++curr;
}
count = *lpcCount - count;
size = left;
}
if (ret != WN_SUCCESS || count == 0)
{
break;
}
}
}
if (count == 0)
ret = WN_NO_MORE_ENTRIES;
*lpcCount = *lpcCount - 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.@]
*/
@ -1251,6 +1413,10 @@ 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;
@ -1267,7 +1433,8 @@ DWORD WINAPI WNetEnumResourceW( HANDLE hEnum, LPDWORD lpcCount,
*/
DWORD WINAPI WNetCloseEnum( HANDLE hEnum )
{
DWORD ret;
DWORD ret, index;
PHANDLE handles;
TRACE( "(%p)\n", hEnum );
@ -1277,12 +1444,21 @@ DWORD WINAPI WNetCloseEnum( HANDLE hEnum )
switch (enumerator->enumType)
{
case WNET_ENUMERATOR_TYPE_CONNECTED:
handles = enumerator->lpBuffer;
for (index = 0; index < providerTable->numProviders; index++)
{
if (providerTable->table[index].dwEnumScopes && handles[index] != 0)
providerTable->table[index].closeEnum(handles[index]);
}
HeapFree(GetProcessHeap(), 0, handles);
ret = WN_SUCCESS;
case WNET_ENUMERATOR_TYPE_NULL:
ret = WN_SUCCESS;
break;
case WNET_ENUMERATOR_TYPE_GLOBAL:
if (enumerator->lpNet)
_freeEnumNetResource(enumerator->lpNet);
if (enumerator->lpBuffer)
_freeEnumNetResource(enumerator->lpBuffer);
if (enumerator->handle)
providerTable->table[enumerator->providerIndex].
closeEnum(enumerator->handle);