mirror of
https://github.com/gnif/LookingGlass.git
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121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/*
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Looking Glass - KVM FrameRelay (KVMFR) Client
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Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <windows.h>
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#include <setupapi.h>
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#include "app.h"
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#include "debug.h"
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#include "windebug.h"
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#include "ivshmem/Public.h"
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static HANDLE shmemHandle = INVALID_HANDLE_VALUE;
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int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
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{
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HDEVINFO deviceInfoSet;
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PSP_DEVICE_INTERFACE_DETAIL_DATA infData = NULL;
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SP_DEVICE_INTERFACE_DATA deviceInterfaceData;
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deviceInfoSet = SetupDiGetClassDevs(NULL, NULL, NULL, DIGCF_PRESENT | DIGCF_ALLCLASSES | DIGCF_DEVICEINTERFACE);
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memset(&deviceInterfaceData, 0, sizeof(SP_DEVICE_INTERFACE_DATA));
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deviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
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if (SetupDiEnumDeviceInterfaces(deviceInfoSet, NULL, &GUID_DEVINTERFACE_IVSHMEM, 0, &deviceInterfaceData) == FALSE)
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{
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DWORD error = GetLastError();
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if (error == ERROR_NO_MORE_ITEMS)
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{
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DEBUG_WINERROR("Unable to enumerate the device, is it attached?", error);
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return -1;
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}
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DEBUG_WINERROR("SetupDiEnumDeviceInterfaces failed", error);
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return -1;
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}
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DWORD reqSize = 0;
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SetupDiGetDeviceInterfaceDetail(deviceInfoSet, &deviceInterfaceData, NULL, 0, &reqSize, NULL);
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if (!reqSize)
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{
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DEBUG_WINERROR("SetupDiGetDeviceInterfaceDetail", GetLastError());
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return -1;
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}
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infData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)calloc(reqSize, 1);
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infData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
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if (!SetupDiGetDeviceInterfaceDetail(deviceInfoSet, &deviceInterfaceData, infData, reqSize, NULL, NULL))
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{
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free(infData);
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DEBUG_WINERROR("SetupDiGetDeviceInterfaceDetail", GetLastError());
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return -1;
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}
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shmemHandle = CreateFile(infData->DevicePath, 0, 0, NULL, OPEN_EXISTING, 0, 0);
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if (shmemHandle == INVALID_HANDLE_VALUE)
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{
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SetupDiDestroyDeviceInfoList(deviceInfoSet);
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free(infData);
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DEBUG_WINERROR("CreateFile returned INVALID_HANDLE_VALUE", GetLastError());
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return -1;
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}
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free(infData);
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SetupDiDestroyDeviceInfoList(deviceInfoSet);
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int result = app_main();
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CloseHandle(shmemHandle);
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return result;
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}
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unsigned int os_shmemSize()
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{
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IVSHMEM_SIZE size;
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if (!DeviceIoControl(shmemHandle, IOCTL_IVSHMEM_REQUEST_SIZE, NULL, 0, &size, sizeof(IVSHMEM_SIZE), NULL, NULL))
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{
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DEBUG_WINERROR("DeviceIoControl Failed", GetLastError());
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return 0;
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}
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return (unsigned int)size;
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}
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bool os_shmemMmap(void **ptr)
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{
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IVSHMEM_MMAP map = {0};
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if (!DeviceIoControl(
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shmemHandle,
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IOCTL_IVSHMEM_REQUEST_MMAP,
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NULL, 0,
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&map, sizeof(IVSHMEM_MMAP),
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NULL, NULL))
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{
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DEBUG_WINERROR("DeviceIoControl Failed", GetLastError());
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return false;
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}
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*ptr = map.ptr;
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return true;
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}
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void os_shmemUnmap()
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{
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} |