SchultesDev/wireguard-go
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winpipe: enforce ownership of client connection

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This commit is contained in:
Jason A. Donenfeld
2019-08-30 13:21:47 -06:00
parent 950ca2ba8c
commit e4b957183c
3 changed files with 46 additions and 7 deletions
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16
ipc/winpipe/zsyscall_windows.go
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@@ -55,6 +55,8 @@ var (
procConvertStringSecurityDescriptorToSecurityDescriptorW = modadvapi32.NewProc("ConvertStringSecurityDescriptorToSecurityDescriptorW")
procLocalFree = modkernel32.NewProc("LocalFree")
procGetSecurityDescriptorLength = modadvapi32.NewProc("GetSecurityDescriptorLength")
procGetSecurityInfo = modadvapi32.NewProc("GetSecurityInfo")
procEqualSid = modadvapi32.NewProc("EqualSid")
procCancelIoEx = modkernel32.NewProc("CancelIoEx")
procCreateIoCompletionPort = modkernel32.NewProc("CreateIoCompletionPort")
procGetQueuedCompletionStatus = modkernel32.NewProc("GetQueuedCompletionStatus")
@@ -206,6 +208,20 @@ func getSecurityDescriptorLength(sd uintptr) (len uint32) {
return
}
func getSecurityInfo(handle syscall.Handle, objectType uint32, securityInformation uint32, owner **syscall.SID, group **syscall.SID, dacl *uintptr, sacl *uintptr, sd *uintptr) (ret error) {
r0, _, _ := syscall.Syscall9(procGetSecurityInfo.Addr(), 8, uintptr(handle), uintptr(objectType), uintptr(securityInformation), uintptr(unsafe.Pointer(owner)), uintptr(unsafe.Pointer(group)), uintptr(unsafe.Pointer(dacl)), uintptr(unsafe.Pointer(sacl)), uintptr(unsafe.Pointer(sd)), 0)
if r0 != 0 {
ret = syscall.Errno(r0)
}
return
}
func equalSid(sid1 *syscall.SID, sid2 *syscall.SID) (isEqual bool) {
r0, _, _ := syscall.Syscall(procEqualSid.Addr(), 2, uintptr(unsafe.Pointer(sid1)), uintptr(unsafe.Pointer(sid2)), 0)
isEqual = r0 != 0
return
}
func cancelIoEx(file syscall.Handle, o *syscall.Overlapped) (err error) {
r1, _, e1 := syscall.Syscall(procCancelIoEx.Addr(), 2, uintptr(file), uintptr(unsafe.Pointer(o)), 0)
if r1 == 0 {