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wsld.h
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/*
* Copyright (c) 2017-2020 yuk7
* Author: yuk7 <[email protected]>
*
* Released under the MIT license
* http://opensource.org/licenses/mit-license.php
*/
#ifndef WSLD_H_
#define WSLD_H_
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <windows.h>
#ifdef __cplusplus
extern "C" {
#endif
// WSL APIs declarations. Old mingw-w64 may not have wslapi.h
HRESULT WINAPI WslIsDistributionRegistered (PCWSTR);
HRESULT WINAPI WslRegisterDistribution (PCWSTR,PCWSTR);
HRESULT WINAPI WslUnregisterDistribution (PCWSTR);
HRESULT WINAPI WslConfigureDistribution (PCWSTR,ULONG,INT);
HRESULT WINAPI WslGetDistributionConfiguration (PCWSTR,ULONG*,ULONG*,INT*,PSTR*,ULONG*);
HRESULT WINAPI WslLaunchInteractive (PCWSTR,PCWSTR,BOOL,DWORD*);
HRESULT WINAPI WslLaunch (PCWSTR,PCWSTR,BOOL,HANDLE,HANDLE,HANDLE,HANDLE*);
#define LXSS_BASE_RKEY L"Software\\Microsoft\\Windows\\CurrentVersion\\Lxss"
#define WSLDL_TERM_KEY L"wsldl-term"
#define MAX_DISTRO_NAME_SIZE 50
#define MAX_BASEPATH_SIZE 128
#define UUID_SIZE 38
struct WslInstallation {
wchar_t uuid[UUID_SIZE+1];
wchar_t basePath[MAX_BASEPATH_SIZE];
wchar_t distroName[MAX_DISTRO_NAME_SIZE];
long termInfo;
} WslInstallation;
struct WslInstallation WslGetInstallationInfo(wchar_t *DistributionName) {
struct WslInstallation wslInstallation = {.uuid = {0}, .basePath = {0}, .distroName = {0}, .termInfo = 0};
HKEY hKey;
LONG rres;
if(RegOpenKeyExW(HKEY_CURRENT_USER,LXSS_BASE_RKEY, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
{
int i;
for(i=0;;i++)
{
wchar_t subKeyF[200];
wcscpy_s(subKeyF,(sizeof(subKeyF)/sizeof(subKeyF[0])),LXSS_BASE_RKEY);
wchar_t subKey[200];
DWORD subKeySz = 100;
FILETIME ftLastWriteTime;
rres = RegEnumKeyExW(hKey, i, subKey, &subKeySz, NULL, NULL, NULL, &ftLastWriteTime);
if (rres == ERROR_NO_MORE_ITEMS)
break;
else if(rres != ERROR_SUCCESS)
{
return wslInstallation;
}
DWORD dwType;
HKEY hKeyS;
wcscat_s(subKeyF,(sizeof(subKeyF)/sizeof(subKeyF[0])),L"\\");
wcscat_s(subKeyF,(sizeof(subKeyF)/sizeof(subKeyF[0])),subKey);
RegOpenKeyExW(HKEY_CURRENT_USER,subKeyF, 0, KEY_READ, &hKeyS);
wchar_t regDistName[MAX_DISTRO_NAME_SIZE*2];
DWORD dwSize = MAX_DISTRO_NAME_SIZE;
rres = RegQueryValueExW(hKeyS, L"DistributionName", NULL, &dwType, (LPBYTE)®DistName,&dwSize);
if (rres != ERROR_SUCCESS)
{
// TODO: this helps for diagnostic, but we should implement a better error handling in the future
fwprintf(stderr,L"ERROR:[%i] Could not read registry key\n", rres);
}
if((subKeySz == UUID_SIZE) && (_wcsicmp(regDistName,DistributionName)==0))
{
// SUCCESS: Distribution found
wcscpy_s(wslInstallation.uuid, UUID_SIZE*2, subKey);
DWORD dnSize = MAX_DISTRO_NAME_SIZE*2;
RegQueryValueExW(hKeyS, L"DistributionName", NULL, &dwType, (LPBYTE)&wslInstallation.distroName, &dnSize);
DWORD pathSize = MAX_BASEPATH_SIZE*2;
rres = RegQueryValueExW(hKeyS, L"BasePath", NULL, &dwType, (LPBYTE)&wslInstallation.basePath, &pathSize);
if (rres != ERROR_SUCCESS)
{
fwprintf(stderr,L"ERROR:[%i] Could not read registry key\n", rres);
}
DWORD tiSize = (int)sizeof(wslInstallation.termInfo);
RegQueryValueExW(hKeyS, WSLDL_TERM_KEY, NULL, NULL, (LPBYTE)&wslInstallation.termInfo, &tiSize);
RegCloseKey(hKey);
RegCloseKey(hKeyS);
return wslInstallation;
}
RegCloseKey(hKeyS);
}
}
RegCloseKey(hKey);
return wslInstallation;
}
int WslSetInstallationPathInfo(wchar_t *uuid,wchar_t *basePath)
{
LONG rres;
HKEY hKey;
wchar_t RKey[200];
wcscpy_s(RKey,(sizeof(RKey)/sizeof(RKey[0])),LXSS_BASE_RKEY);
wcscat_s(RKey,(sizeof(RKey)/sizeof(RKey[0])),L"\\");
wcscat_s(RKey,(sizeof(RKey)/sizeof(RKey[0])),uuid);
RegOpenKeyExW(HKEY_CURRENT_USER,RKey, 0, KEY_SET_VALUE, &hKey);
rres = RegSetValueExW(hKey,L"BasePath",0,REG_SZ,(const BYTE*)basePath,MAX_BASEPATH_SIZE);
if (rres != ERROR_SUCCESS)
{
fwprintf(stderr,L"ERROR:[%i] Write registory key failed\n", rres);
return 1;
}
return 0;
}
int WsldlSetTerminalInfo(wchar_t *uuid ,long id)
{
LONG rres;
HKEY hKey;
wchar_t RKey[200];
wcscpy_s(RKey,(sizeof(RKey)/sizeof(RKey[0])),LXSS_BASE_RKEY);
wcscat_s(RKey,(sizeof(RKey)/sizeof(RKey[0])),L"\\");
wcscat_s(RKey,(sizeof(RKey)/sizeof(RKey[0])),uuid);
RegOpenKeyExW(HKEY_CURRENT_USER,RKey, 0, KEY_SET_VALUE, &hKey);
rres = RegSetValueExW(hKey, WSLDL_TERM_KEY, 0, REG_DWORD, (const BYTE*)&id, (int)sizeof(id));
return rres;
}
unsigned long WslExec(wchar_t *DistroName, wchar_t *command, char *result, long unsigned int *len)
{
HANDLE hProcess;
HANDLE hOutTmp,hOut;
HANDLE hInTmp,hIn;
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(sa);
sa.bInheritHandle = TRUE;
sa.lpSecurityDescriptor = NULL;
CreatePipe(&hOut, &hOutTmp, &sa, 0);
CreatePipe(&hIn, &hInTmp, &sa, 0);
if(WslLaunch(DistroName, command, 1, hInTmp, hOutTmp, hOutTmp, &hProcess))
{
return 100000;
}
CloseHandle(hInTmp);
CloseHandle(hOutTmp);
WaitForSingleObject(hProcess, INFINITE);
unsigned long exitcode;
GetExitCodeProcess(hProcess, &exitcode);
if(!ReadFile(hOut, result, *len, len, NULL))
{
return 200000;
}
if(result[(strrchr(result, '\0') - result) - 1] == '\n')
{
result[(strrchr(result, '\0') - result) - 1] = '\0';
}
CloseHandle(hIn);
CloseHandle(hOut);
CloseHandle(hProcess);
return exitcode;
}
#ifdef __cplusplus
}
#endif
#endif