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dll: np: NPGetUniversalName implementation

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This commit is contained in:
Bill Zissimopoulos
2022-02-03 13:51:22 +00:00
parent 025e42e046
commit cf13cac438
2 changed files with 94 additions and 0 deletions
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1
src/dll/library.def
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@@ -9,3 +9,4 @@ EXPORTS
NPOpenEnum PRIVATE
NPEnumResource PRIVATE
NPCloseEnum PRIVATE
NPGetUniversalName PRIVATE

93
src/dll/np.c
View File

@@ -863,6 +863,99 @@ DWORD APIENTRY NPCancelConnection(LPWSTR lpName, BOOL fForce)
return NpResult;
}
DWORD APIENTRY NPGetUniversalName(
LPCWSTR lpLocalPath,
DWORD dwInfoLevel,
LPVOID lpBuffer,
LPDWORD lpBufferSize)
{
DWORD NpResult;
WCHAR LocalNameBuf[3];
PCWSTR RemainLocalPath;
WCHAR RemoteNameBuf[sizeof(((FSP_FSCTL_VOLUME_PARAMS *)0)->Prefix) / sizeof(WCHAR)];
DWORD RemoteNameSize, RemainLocalPathSize, RequiredBufferSize;
if (UNIVERSAL_NAME_INFO_LEVEL != dwInfoLevel &&
REMOTE_NAME_INFO_LEVEL != dwInfoLevel)
return WN_BAD_LEVEL;
if (0 == lpLocalPath ||
L'\0' == lpLocalPath[0] ||
L':' != lpLocalPath[1] ||
(L'\0' != lpLocalPath[2] && L'\\' != lpLocalPath[2]))
return WN_BAD_LOCALNAME;
LocalNameBuf[0] = lpLocalPath[0];
LocalNameBuf[1] = L':';
LocalNameBuf[2] = L'\0';
RemainLocalPath = lpLocalPath + 2;
RemoteNameSize = sizeof RemoteNameBuf / sizeof(WCHAR);
NpResult = NPGetConnection(LocalNameBuf, RemoteNameBuf, &RemoteNameSize);
if (WN_SUCCESS != NpResult)
return NpResult;
RemoteNameSize = lstrlenW(RemoteNameBuf) * sizeof(WCHAR);
RemainLocalPathSize = lstrlenW(RemainLocalPath) * sizeof(WCHAR) + sizeof(WCHAR)/* term-0 */;
if (UNIVERSAL_NAME_INFO_LEVEL == dwInfoLevel)
{
RequiredBufferSize = sizeof(UNIVERSAL_NAME_INFOW) +
/* UniversalName */ RemoteNameSize + RemainLocalPathSize;
if (RequiredBufferSize > *lpBufferSize)
{
*lpBufferSize = RequiredBufferSize;
NpResult = WN_MORE_DATA;
goto exit;
}
LPUNIVERSAL_NAME_INFOW Info = lpBuffer;
memset(Info, 0, sizeof *Info);
Info->lpUniversalName = (PVOID)(Info + 1);
memcpy(Info->lpUniversalName, RemoteNameBuf, RemoteNameSize);
memcpy((PUINT8)Info->lpUniversalName + RemoteNameSize, RemainLocalPath,
RemainLocalPathSize);
NpResult = WN_SUCCESS;
}
else if (REMOTE_NAME_INFO_LEVEL == dwInfoLevel)
{
RequiredBufferSize = sizeof(REMOTE_NAME_INFOW) +
/* UniversalName */ RemoteNameSize + RemainLocalPathSize +
/* ConnectionName */RemoteNameSize + sizeof(WCHAR) +
/* RemainingPath */ RemainLocalPathSize;
if (RequiredBufferSize > *lpBufferSize)
{
*lpBufferSize = RequiredBufferSize;
NpResult = WN_MORE_DATA;
goto exit;
}
LPREMOTE_NAME_INFOW Info = lpBuffer;
memset(Info, 0, sizeof *Info);
Info->lpUniversalName = (PVOID)(Info + 1);
Info->lpConnectionName = (PVOID)((PUINT8)Info->lpUniversalName +
RemoteNameSize + RemainLocalPathSize);
Info->lpRemainingPath = (PVOID)((PUINT8)Info->lpConnectionName +
RemoteNameSize + sizeof(WCHAR));
memcpy(Info->lpUniversalName, RemoteNameBuf, RemoteNameSize);
memcpy((PUINT8)Info->lpUniversalName + RemoteNameSize, RemainLocalPath,
RemainLocalPathSize);
memcpy(Info->lpConnectionName, RemoteNameBuf, RemoteNameSize + sizeof(WCHAR));
memcpy(Info->lpRemainingPath, RemainLocalPath, RemainLocalPathSize);
NpResult = WN_SUCCESS;
}
else
/* should not happen! */
NpResult = WN_BAD_LEVEL;
exit:
return NpResult;
}
typedef struct
{
DWORD Signature; /* cheap and cheerful! */