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windows: add net user enum

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In the go windows package, you can get user information by using
`NetUserGetInfo` along with a specified level. However, there is
no way to get a list of the users.
The only options are to
1. know the users,
2. brute force users, or
3. use an external tool or command (`net users`).

I suggest adding a function that implements the windows api for
`NetUserEnum`. This will allow a built in way to enumerate
users and follow the standard.

A side note is that I used `buf **byte` because
it is how the others are done, but using `buf *byte`
works just as well.

Change-Id: Ifcc916659eb1d796175cd18acd2e81f2661bfcd2
GitHub-Last-Rev: 3d01bca920
GitHub-Pull-Request: golang/sys#190
Reviewed-on: https://go-review.googlesource.com/c/sys/+/578475
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Auto-Submit: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
JoeyShapiro
2024-05-05 01:47:56 +00:00
committed by Gopher Robot
parent 6dfb94eaa3
commit f34bb9fccc
2 changed files with 10 additions and 0 deletions
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1
windows/security_windows.go
View File

@@ -68,6 +68,7 @@ type UserInfo10 struct {
//sys NetUserGetInfo(serverName *uint16, userName *uint16, level uint32, buf **byte) (neterr error) = netapi32.NetUserGetInfo
//sys NetGetJoinInformation(server *uint16, name **uint16, bufType *uint32) (neterr error) = netapi32.NetGetJoinInformation
//sys NetApiBufferFree(buf *byte) (neterr error) = netapi32.NetApiBufferFree
//sys NetUserEnum(serverName *uint16, level uint32, filter uint32, buf **byte, prefMaxLen uint32, entriesRead *uint32, totalEntries *uint32, resumeHandle *uint32) (neterr error) = netapi32.NetUserEnum
const (
// do not reorder

9
windows/zsyscall_windows.go
View File

@@ -401,6 +401,7 @@ var (
procTransmitFile = modmswsock.NewProc("TransmitFile")
procNetApiBufferFree = modnetapi32.NewProc("NetApiBufferFree")
procNetGetJoinInformation = modnetapi32.NewProc("NetGetJoinInformation")
procNetUserEnum = modnetapi32.NewProc("NetUserEnum")
procNetUserGetInfo = modnetapi32.NewProc("NetUserGetInfo")
procNtCreateFile = modntdll.NewProc("NtCreateFile")
procNtCreateNamedPipeFile = modntdll.NewProc("NtCreateNamedPipeFile")
@@ -3486,6 +3487,14 @@ func NetGetJoinInformation(server *uint16, name **uint16, bufType *uint32) (nete
return
}
func NetUserEnum(serverName *uint16, level uint32, filter uint32, buf **byte, prefMaxLen uint32, entriesRead *uint32, totalEntries *uint32, resumeHandle *uint32) (neterr error) {
r0, _, _ := syscall.Syscall9(procNetUserEnum.Addr(), 8, uintptr(unsafe.Pointer(serverName)), uintptr(level), uintptr(filter), uintptr(unsafe.Pointer(buf)), uintptr(prefMaxLen), uintptr(unsafe.Pointer(entriesRead)), uintptr(unsafe.Pointer(totalEntries)), uintptr(unsafe.Pointer(resumeHandle)), 0)
if r0 != 0 {
neterr = syscall.Errno(r0)
}
return
}
func NetUserGetInfo(serverName *uint16, userName *uint16, level uint32, buf **byte) (neterr error) {
r0, _, _ := syscall.Syscall6(procNetUserGetInfo.Addr(), 4, uintptr(unsafe.Pointer(serverName)), uintptr(unsafe.Pointer(userName)), uintptr(level), uintptr(unsafe.Pointer(buf)), 0, 0)
if r0 != 0 {