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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package elevate
import (
"unsafe"
"golang.org/x/sys/windows"
)
/* We could use the undocumented LdrFindEntryForAddress function instead, but that's undocumented, and we're trying
* to be as rock-solid as possible here. */
func findCurrentDataTableEntry() (entry *cLDR_DATA_TABLE_ENTRY, err error) {
peb := rtlGetCurrentPeb()
if peb == nil || peb.Ldr == nil {
err = windows.ERROR_INVALID_ADDRESS
return
}
for cur := peb.Ldr.InMemoryOrderModuleList.Flink; cur != &peb.Ldr.InMemoryOrderModuleList; cur = cur.Flink {
entry = (*cLDR_DATA_TABLE_ENTRY)(unsafe.Pointer(uintptr(unsafe.Pointer(cur)) - unsafe.Offsetof(cLDR_DATA_TABLE_ENTRY{}.InMemoryOrderLinks)))
if entry.DllBase == peb.ImageBaseAddress {
return
}
}
entry = nil
err = windows.ERROR_OBJECT_NOT_FOUND
return
}
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