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dll: WIP

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This commit is contained in:
Bill Zissimopoulos 2015-12-31 22:53:17 -08:00
parent 8e2ed419f0
commit 223b287453
13 changed files with 391 additions and 2 deletions
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1
build/VStudio/testing/winfsp-tests.vcxproj
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@ -177,6 +177,7 @@
<WarningLevel Condition="'$(Configuration)|$(Platform)'=='Release|x64'">TurnOffAllWarnings</WarningLevel>
</ClCompile>
<ClCompile Include="..\..\..\tst\winfsp-tests\mount-test.c" />
<ClCompile Include="..\..\..\tst\winfsp-tests\path-test.c" />
<ClCompile Include="..\..\..\tst\winfsp-tests\timeout-test.c" />
<ClCompile Include="..\..\..\tst\winfsp-tests\winfsp-tests.c" />
</ItemGroup>

3
build/VStudio/testing/winfsp-tests.vcxproj.filters
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@ -22,6 +22,9 @@
<ClCompile Include="..\..\..\tst\winfsp-tests\timeout-test.c">
<Filter>Source</Filter>
</ClCompile>
<ClCompile Include="..\..\..\tst\winfsp-tests\path-test.c">
<Filter>Source</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\..\..\ext\tlib\testsuite.h">

3
build/VStudio/winfsp_dll.vcxproj
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@ -24,11 +24,14 @@
<ClInclude Include="..\..\src\dll\library.h" />
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\src\dll\access.c" />
<ClCompile Include="..\..\src\dll\create.c" />
<ClCompile Include="..\..\src\dll\debug.c" />
<ClCompile Include="..\..\src\dll\fsctl.c" />
<ClCompile Include="..\..\src\dll\library.c" />
<ClCompile Include="..\..\src\dll\loop.c" />
<ClCompile Include="..\..\src\dll\ntstatus.c" />
<ClCompile Include="..\..\src\dll\path.c" />
</ItemGroup>
<ItemGroup>
<None Include="..\..\src\dll\ntstatus.i" />

9
build/VStudio/winfsp_dll.vcxproj.filters
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@ -40,6 +40,15 @@
<ClCompile Include="..\..\src\dll\loop.c">
<Filter>Source</Filter>
</ClCompile>
<ClCompile Include="..\..\src\dll\create.c">
<Filter>Source</Filter>
</ClCompile>
<ClCompile Include="..\..\src\dll\access.c">
<Filter>Source</Filter>
</ClCompile>
<ClCompile Include="..\..\src\dll\path.c">
<Filter>Source</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<None Include="..\..\src\dll\ntstatus.i">

3
inc/winfsp/fsctl.h
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@ -110,7 +110,6 @@ typedef struct
UINT32 FileAttributes; /* FILE_ATTRIBUTE_{NORMAL,DIRECTORY,etc.} */
FSP_FSCTL_TRANSACT_BUF SecurityDescriptor; /* security descriptor for new files */
UINT64 AllocationSize; /* initial allocation size */
UINT64 AccessToken; /* (HANDLE); request access token; sent if NoAccessCheck is 0 */
UINT32 DesiredAccess; /* FILE_{READ_DATA,WRITE_DATA,etc.} */
UINT32 ShareAccess; /* FILE_SHARE_{READ,WRITE,DELETE} */
FSP_FSCTL_TRANSACT_BUF Ea; /* reserved; not currently implemented */
@ -214,6 +213,8 @@ FSP_API NTSTATUS FspFsctlCreateVolume(PWSTR DevicePath,
FSP_API NTSTATUS FspFsctlTransact(HANDLE VolumeHandle,
PVOID ResponseBuf, SIZE_T ResponseBufSize,
PVOID RequestBuf, SIZE_T *PRequestBufSize);
FSP_API NTSTATUS FspFsctlOpenAccessToken(HANDLE VolumeHandle,
UINT64 Hint, PHANDLE PAccessToken);
#endif
#endif

18
inc/winfsp/winfsp.h
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@ -21,6 +21,9 @@
#include <winfsp/fsctl.h>
/*
* File System
*/
typedef struct _FSP_FILE_SYSTEM FSP_FILE_SYSTEM;
typedef VOID FSP_FILE_SYSTEM_DISPATCHER(FSP_FILE_SYSTEM *, FSP_FSCTL_TRANSACT_REQ *);
typedef NTSTATUS FSP_FILE_SYSTEM_OPERATION(FSP_FILE_SYSTEM *, FSP_FSCTL_TRANSACT_REQ *);
@ -34,6 +37,10 @@ typedef struct _FSP_FILE_SYSTEM
FSP_FILE_SYSTEM_DISPATCHER *Dispatcher;
FSP_FILE_SYSTEM_DISPATCHER *EnterOperation, *LeaveOperation;
FSP_FILE_SYSTEM_OPERATION *Operations[FspFsctlTransactKindCount];
NTSTATUS (*AccessCheck)(FSP_FILE_SYSTEM *, FSP_FSCTL_TRANSACT_REQ *,
PDWORD);
NTSTATUS (*QuerySecurity)(FSP_FILE_SYSTEM *, FSP_FSCTL_TRANSACT_REQ *,
SECURITY_INFORMATION, PSECURITY_DESCRIPTOR, SIZE_T *);
} FSP_FILE_SYSTEM;
FSP_API NTSTATUS FspFileSystemCreate(PWSTR DevicePath,
@ -80,6 +87,17 @@ FSP_API NTSTATUS FspSendResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_API NTSTATUS FspSendResponseWithStatus(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, NTSTATUS Result);
/*
* Path Handling
*/
FSP_API VOID FspPathPrefix(PWSTR Path, PWSTR *PPrefix, PWSTR *PRemain);
FSP_API VOID FspPathSuffix(PWSTR Path, PWSTR *PRemain, PWSTR *PSuffix);
FSP_API VOID FspPathCombine(PWSTR Prefix, PWSTR Suffix);
/*
* Utility
*/
FSP_API PGENERIC_MAPPING FspGetFileGenericMapping(VOID);
FSP_API NTSTATUS FspNtStatusFromWin32(DWORD Error);
FSP_API VOID FspDebugLog(const char *format, ...);

70
src/dll/access.c Normal file
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@ -0,0 +1,70 @@
/**
* @file dll/access.c
*
* @copyright 2015 Bill Zissimopoulos
*/
#include <dll/library.h>
static GENERIC_MAPPING FspFileGenericMapping =
{
.GenericRead = FILE_GENERIC_READ,
.GenericWrite = FILE_GENERIC_WRITE,
.GenericExecute = FILE_GENERIC_EXECUTE,
.GenericAll = FILE_ALL_ACCESS,
};
FSP_API PGENERIC_MAPPING FspGetFileGenericMapping(VOID)
{
return &FspFileGenericMapping;
}
FSP_API NTSTATUS FspOpenAccessToken(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, PHANDLE PAccessToken)
{
return FspFsctlOpenAccessToken(FileSystem->VolumeHandle, Request->Hint, PAccessToken);
}
#if 0
FSP_API NTSTATUS FspAccessCheck(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, PUINT32 PGrantedAccess)
{
if (0 != FileSystem->AccessCheck)
return FileSystem->AccessCheck(FileSystem, Request, PGrantedAccess);
NTSTATUS Result;
PWSTR FileName = (PVOID)Request->Buffer;
PSECURITY_DESCRIPTOR SecurityDescriptor = 0;
HANDLE AccessToken = 0;
DWORD PrivilegeSetLength;
BOOLEAN AccessStatus;
s
*PGrantedAccess = 0;
SecurityDescriptor = MemAlloc(1024);
if (0 == SecurityDescriptor)
{
Result = STATUS_INSUFFICIENT_RESOURCES;
goto exit;
}
Result = FspGetSecurityDescriptor();
Result = FspOpenAccessToken(FileSystem, Request, &AccessToken);
if (!NT_SUCCESS(Result))
goto exit;
if (AccessCheck(&SecurityDescriptor, AccessToken, Request->Req.Create.DesiredAccess,
&FspFileGenericMapping, 0, &PrivilegeSetLength, PGrantedAccess, &AccessStatus))
Result = AccessStatus ? STATUS_SUCCESS : STATUS_ACCESS_DENIED;
else
Result = FspNtStatusFromWin32(GetLastError());
exit:
if (0 != AccessToken)
CloseHandle(AccessToken);
MemFree(SecurityDescriptor);
return Result;
}
#endif

112
src/dll/create.c Normal file
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@ -0,0 +1,112 @@
/**
* @file dll/create.c
*
* @copyright 2015 Bill Zissimopoulos
*/
#include <dll/library.h>
#if 0
static NTSTATUS FspFileSystemOpCreate_FileCreate(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
NTSTATUS Result;
DWORD GrantedAccess;
PVOID File;
FSP_FSCTL_TRANSACT_RSP Response;
Result = FspAccessCheck(FileSystem, Request, TRUE, &GrantedAccess);
if (!NT_SUCCESS(Result))
return FspSendResponseWithStatus(FileSystem, Request, Result);
Result = FileSystem->FileCreate(FileSystem, Request, &File);
if (!NT_SUCCESS(Result))
return FspSendResponseWithStatus(FileSystem, Request, Result);
/* !!!: set share access */
memset(&Response, 0, sizeof Response);
Response.Size = sizeof Response;
Response.Kind = Request->Kind;
Response.Hint = Request->Hint;
Response.IoStatus.Status = STATUS_SUCCESS;
Response.IoStatus.Information = FILE_CREATED;
Response.Rsp.Create.Opened.UserContext = (UINT_PTR)File;
Response.Rsp.Create.Opened.GrantedAccess = GrantedAccess;
return FspSendResponse(FileSystem, &Response);
}
static NTSTATUS FspFileSystemOpCreate_FileOpen(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
NTSTATUS Result;
DWORD GrantedAccess;
PVOID File;
FSP_FSCTL_TRANSACT_RSP Response;
Result = FspAccessCheck(FileSystem, Request, FALSE, &GrantedAccess);
if (!NT_SUCCESS(Result))
return FspSendResponseWithStatus(FileSystem, Request, Result);
Result = FileSystem->FileOpen(FileSystem, Request, &File);
if (!NT_SUCCESS(Result))
return FspSendResponseWithStatus(FileSystem, Request, Result);
Result = FspShareCheck(FileSystem, Request, GrantedAccess, File);
if (!NT_SUCCESS(Result))
{
FileSystem->FileCleanupClose(FileSystem, Request, File);
return FspSendResponseWithStatus(FileSystem, Request, Result);
}
memset(&Response, 0, sizeof Response);
Response.Size = sizeof Response;
Response.Kind = Request->Kind;
Response.Hint = Request->Hint;
Response.IoStatus.Status = STATUS_SUCCESS;
Response.IoStatus.Information = FILE_CREATED;
Response.Rsp.Create.Opened.UserContext = (UINT_PTR)File;
Response.Rsp.Create.Opened.GrantedAccess = GrantedAccess;
return FspSendResponse(FileSystem, &Response);
}
static NTSTATUS FspFileSystemOpCreate_FileOpenIf(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
return STATUS_INVALID_PARAMETER;
}
static NTSTATUS FspFileSystemOpCreate_FileOverwrite(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request, BOOLEAN Supersede)
{
return STATUS_INVALID_PARAMETER;
}
static NTSTATUS FspFileSystemOpCreate_FileOverwriteIf(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
return STATUS_INVALID_PARAMETER;
}
FSP_API NTSTATUS FspFileSystemOpCreate(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request)
{
switch ((Request->Req.Create.CreateOptions >> 24) & 0xff)
{
case FILE_CREATE:
return FspFileSystemOpCreate_FileCreate(FileSystem, Request);
case FILE_OPEN:
return FspFileSystemOpCreate_FileOpen(FileSystem, Request);
case FILE_OPEN_IF:
return FspFileSystemOpCreate_FileOpenIf(FileSystem, Request);
case FILE_OVERWRITE:
return FspFileSystemOpCreate_FileOverwrite(FileSystem, Request, FALSE);
case FILE_SUPERSEDE:
return FspFileSystemOpCreate_FileOverwrite(FileSystem, Request, TRUE);
case FILE_OVERWRITE_IF:
return FspFileSystemOpCreate_FileOverwriteIf(FileSystem, Request);
default:
return FspSendResponseWithStatus(FileSystem, Request, STATUS_INVALID_PARAMETER);
}
}
#endif

8
src/dll/fsctl.c
View File

@ -109,3 +109,11 @@ FSP_API NTSTATUS FspFsctlTransact(HANDLE VolumeHandle,
exit:
return Result;
}
FSP_API NTSTATUS FspFsctlOpenAccessToken(HANDLE VolumeHandle,
UINT64 Hint, PHANDLE PAccessToken)
{
*PAccessToken = 0;
return STATUS_NOT_IMPLEMENTED;
}

56
src/dll/path.c Normal file
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@ -0,0 +1,56 @@
/**
* @file dll/path.c
*
* @copyright 2015 Bill Zissimopoulos
*/
#include <dll/library.h>
FSP_API VOID FspPathPrefix(PWSTR Path, PWSTR *PPrefix, PWSTR *PRemain)
{
PWSTR Pointer;
for (Pointer = Path; *Pointer; Pointer++)
if (L'\\' == *Pointer)
{
*Pointer++ = L'\0';
for (; L'\\' == *Pointer; Pointer++)
;
break;
}
*PPrefix = Path;
*PRemain = Pointer;
}
FSP_API VOID FspPathSuffix(PWSTR Path, PWSTR *PRemain, PWSTR *PSuffix)
{
PWSTR Pointer, RemainEnd, Suffix = 0;
for (Pointer = Path; *Pointer;)
if (L'\\' == *Pointer)
{
RemainEnd = Pointer++;
for (; L'\\' == *Pointer; Pointer++)
;
Suffix = Pointer;
}
else
Pointer++;
*PRemain = Path;
if (Path < Suffix)
{
*RemainEnd = L'\0';
*PSuffix = Suffix;
}
else
*PSuffix = Pointer;
}
FSP_API VOID FspPathCombine(PWSTR Prefix, PWSTR Suffix)
{
for (; Prefix < Suffix; Prefix++)
if (L'\0' == *Prefix)
*Prefix = L'\\';
}

1
src/sys/create.c
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@ -256,7 +256,6 @@ static NTSTATUS FspFsvolCreate(
FSP_FSCTL_DEFAULT_ALIGN_UP(Request->FileName.Size);
Request->Req.Create.SecurityDescriptor.Size = (UINT16)SecurityDescriptorSize;
Request->Req.Create.AllocationSize = AllocationSize.QuadPart;
Request->Req.Create.AccessToken = 0;
Request->Req.Create.DesiredAccess = DesiredAccess;
Request->Req.Create.ShareAccess = ShareAccess;
Request->Req.Create.Ea.Offset = 0;

108
tst/winfsp-tests/path-test.c Normal file
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@ -0,0 +1,108 @@
#include <winfsp/winfsp.h>
#include <tlib/testsuite.h>
void path_prefix_test(void)
{
PWSTR ipaths[] =
{
L"",
L"\\",
L"\\\\",
L"\\a",
L"\\\\a",
L"\\\\a\\",
L"\\\\a\\\\",
L"a\\",
L"a\\\\",
L"a\\b",
L"a\\\\b",
L"foo\\\\\\bar\\\\baz",
L"foo\\\\\\bar\\\\baz\\",
L"foo\\\\\\bar\\\\baz\\\\",
};
PWSTR opaths[] =
{
L"", L"",
L"", L"",
L"", L"",
L"", L"a",
L"", L"a",
L"", L"a\\",
L"", L"a\\\\",
L"a", L"",
L"a", L"",
L"a", L"b",
L"a", L"b",
L"foo", L"bar\\\\baz",
L"foo", L"bar\\\\baz\\",
L"foo", L"bar\\\\baz\\\\",
};
for (size_t i = 0; sizeof ipaths / sizeof ipaths[0] > i; i++)
{
PWSTR Prefix, Remain;
WCHAR buf[32];
wcscpy_s(buf, 32, ipaths[i]);
FspPathPrefix(buf, &Prefix, &Remain);
ASSERT(0 == wcscmp(opaths[2 * i + 0], Prefix));
ASSERT(0 == wcscmp(opaths[2 * i + 1], Remain));
FspPathCombine(Prefix, Remain);
ASSERT(0 == wcscmp(ipaths[i], buf));
}
}
void path_suffix_test(void)
{
PWSTR ipaths[] =
{
L"",
L"\\",
L"\\\\",
L"\\a",
L"\\\\a",
L"\\\\a\\",
L"\\\\a\\\\",
L"a\\",
L"a\\\\",
L"a\\b",
L"a\\\\b",
L"foo\\\\\\bar\\\\baz",
L"foo\\\\\\bar\\\\baz\\",
L"foo\\\\\\bar\\\\baz\\\\",
};
PWSTR opaths[] =
{
L"", L"",
L"", L"",
L"", L"",
L"", L"a",
L"", L"a",
L"\\\\a", L"",
L"\\\\a", L"",
L"a", L"",
L"a", L"",
L"a", L"b",
L"a", L"b",
L"foo\\\\\\bar", L"baz",
L"foo\\\\\\bar\\\\baz", L"",
L"foo\\\\\\bar\\\\baz", L"",
};
for (size_t i = 0; sizeof ipaths / sizeof ipaths[0] > i; i++)
{
PWSTR Remain, Suffix;
WCHAR buf[32];
wcscpy_s(buf, 32, ipaths[i]);
FspPathSuffix(buf, &Remain, &Suffix);
ASSERT(0 == wcscmp(opaths[2 * i + 0], Remain));
ASSERT(0 == wcscmp(opaths[2 * i + 1], Suffix));
FspPathCombine(Remain, Suffix);
ASSERT(0 == wcscmp(ipaths[i], buf));
}
}
void path_tests(void)
{
TEST(path_prefix_test);
TEST(path_suffix_test);
}

1
tst/winfsp-tests/winfsp-tests.c
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@ -5,6 +5,7 @@ int WinFspNetTests = 1;
int main(int argc, char *argv[])
{
TESTSUITE(path_tests);
TESTSUITE(mount_tests);
TESTSUITE(timeout_tests);