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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| // +build !windows | ||
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| package repo | ||
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| import "golang.org/x/sys/unix" | ||
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| func isWritable(path string) (bool, error) { | ||
| err := unix.Access(path, unix.W_OK) | ||
| return err == nil, err | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package repo | ||
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| import ( | ||
| "syscall" | ||
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| "github.com/itchio/ox/syscallex" | ||
| "github.com/itchio/ox/winox" | ||
| ) | ||
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| var ( | ||
| advapi32DLL = syscall.NewLazyDLL("advapi32.dll") | ||
| impersonateSelfProc = advapi32DLL.NewProc("ImpersonateSelf") | ||
| ) | ||
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| func ImpersonateSelf(impersonationLevel uint64) (bool, error) { | ||
| r1, _, err := impersonateSelfProc.Call( | ||
| uintptr(impersonationLevel), | ||
| ) | ||
| if err != syscall.Errno(0) { | ||
| return false, err | ||
| } | ||
| return syscall.Handle(r1) == 1, nil | ||
| } | ||
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| func isWritable(path string) (bool, error) { | ||
| if _, err := ImpersonateSelf(syscallex.SecurityImpersonation); err != nil { | ||
| return false, err | ||
| } | ||
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| defer func() { | ||
| _ = syscallex.RevertToSelf() | ||
| }() | ||
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| var impersonationToken syscall.Token | ||
| currentThread := syscallex.GetCurrentThread() | ||
| err := syscallex.OpenThreadToken( | ||
| currentThread, | ||
| syscall.TOKEN_ALL_ACCESS, | ||
| 1, | ||
| &impersonationToken, | ||
| ) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
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| return winox.UserHasPermission(impersonationToken, winox.RightsRead|winox.RightsWrite, path) | ||
| } |