mirror of
https://github.com/ropnop/go-clr
synced 2026-06-08 17:11:59 +00:00
Ronnie Flathers
107 lines
2.7 KiB
Go
107 lines
2.7 KiB
Go
// +build windows
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package clr
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import (
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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var (
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modMSCoree = syscall.NewLazyDLL("mscoree.dll")
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procCLRCreateInstance = modMSCoree.NewProc("CLRCreateInstance")
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)
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// Wrapper for the mscorree.dll CLRCreateInstance syscall
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func CLRCreateInstance(clsid, riid *windows.GUID, ppInterface *uintptr) uintptr {
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ret, _, _ := procCLRCreateInstance.Call(
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uintptr(unsafe.Pointer(clsid)),
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uintptr(unsafe.Pointer(riid)),
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uintptr(unsafe.Pointer(ppInterface)))
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return ret
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}
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// Couldnt have done any of this without this SO answer I stumbled on:
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// https://stackoverflow.com/questions/37781676/how-to-use-com-component-object-model-in-golang
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//ICLRMetaHost Interface from metahost.h
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type ICLRMetaHost struct {
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vtbl *ICLRMetaHostVtbl
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}
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type ICLRMetaHostVtbl struct {
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QueryInterface uintptr
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AddRef uintptr
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Release uintptr
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GetRuntime uintptr
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GetVersionFromFile uintptr
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EnumerateInstalledRuntimes uintptr
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EnumerateLoadedRuntimes uintptr
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RequestRuntimeLoadedNotification uintptr
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QueryLegacyV2RuntimeBinding uintptr
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ExitProcess uintptr
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}
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// GetICLRMetaHost is a wrapper function to create and return an ICLRMetahost object
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func GetICLRMetaHost() (metahost *ICLRMetaHost, err error) {
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var pMetaHost uintptr
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hr := CLRCreateInstance(&CLSID_CLRMetaHost, &IID_ICLRMetaHost, &pMetaHost)
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err = checkOK(hr, "CLRCreateInstance")
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if err != nil {
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return
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}
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metahost = NewICLRMetaHostFromPtr(pMetaHost)
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return
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}
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// NewICLRMetaHost takes a uintptr to an ICLRMetahost struct in memory. This pointer should come from the syscall CLRCreateInstance
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func NewICLRMetaHostFromPtr(ppv uintptr) *ICLRMetaHost {
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return (*ICLRMetaHost)(unsafe.Pointer(ppv))
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}
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func (obj *ICLRMetaHost) AddRef() uintptr {
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ret, _, _ := syscall.Syscall(
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obj.vtbl.AddRef,
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1,
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uintptr(unsafe.Pointer(obj)),
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0,
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0)
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return ret
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}
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func (obj *ICLRMetaHost) Release() uintptr {
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ret, _, _ := syscall.Syscall(
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obj.vtbl.Release,
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1,
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uintptr(unsafe.Pointer(obj)),
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0,
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0)
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return ret
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}
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func (obj *ICLRMetaHost) EnumerateInstalledRuntimes(pInstalledRuntimes *uintptr) uintptr {
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ret, _, _ := syscall.Syscall(
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obj.vtbl.EnumerateInstalledRuntimes,
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2,
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uintptr(unsafe.Pointer(obj)),
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uintptr(unsafe.Pointer(pInstalledRuntimes)),
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0)
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return ret
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}
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func (obj *ICLRMetaHost) GetRuntime(pwzVersion *uint16, riid *windows.GUID, pRuntimeHost *uintptr) uintptr {
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ret, _, _ := syscall.Syscall6(
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obj.vtbl.GetRuntime,
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4,
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uintptr(unsafe.Pointer(obj)),
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uintptr(unsafe.Pointer(pwzVersion)),
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uintptr(unsafe.Pointer(&IID_ICLRRuntimeInfo)),
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uintptr(unsafe.Pointer(pRuntimeHost)),
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0,
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0)
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return ret
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}
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