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4dbdb19c26
The definition of winHTTPProxyInfo was using the wrong type (uint16 vs uint32) for its first field. I fixed that type. Furthermore, any UTF16 strings returned in that structure must be explicitly freed. I added code to do this. Finally, since this is the second time I've seen type safety errors in this code, I switched the native API calls over to use wrappers generated by mkwinsyscall. I know that would not have helped prevent the previous two problems, but every bit helps IMHO. Updates https://github.com/tailscale/tailscale/issues/4811 Signed-off-by: Aaron Klotz <aaron@tailscale.com>
82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
// Code generated by 'go generate'; DO NOT EDIT.
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package tshttpproxy
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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 _ unsafe.Pointer
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// Do the interface allocations only once for common
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// Errno values.
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const (
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errnoERROR_IO_PENDING = 997
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)
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var (
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errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
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errERROR_EINVAL error = syscall.EINVAL
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)
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// errnoErr returns common boxed Errno values, to prevent
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// allocations at runtime.
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func errnoErr(e syscall.Errno) error {
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switch e {
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case 0:
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return errERROR_EINVAL
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case errnoERROR_IO_PENDING:
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return errERROR_IO_PENDING
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}
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// TODO: add more here, after collecting data on the common
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// error values see on Windows. (perhaps when running
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// all.bat?)
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return e
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}
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var (
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modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
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modwinhttp = windows.NewLazySystemDLL("winhttp.dll")
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procGlobalFree = modkernel32.NewProc("GlobalFree")
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procWinHttpCloseHandle = modwinhttp.NewProc("WinHttpCloseHandle")
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procWinHttpGetProxyForUrl = modwinhttp.NewProc("WinHttpGetProxyForUrl")
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procWinHttpOpen = modwinhttp.NewProc("WinHttpOpen")
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)
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func globalFree(hglobal winHGlobal) (err error) {
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r1, _, e1 := syscall.Syscall(procGlobalFree.Addr(), 1, uintptr(hglobal), 0, 0)
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if r1 == 0 {
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err = errnoErr(e1)
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}
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return
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}
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func winHTTPCloseHandle(whi winHTTPInternet) (err error) {
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r1, _, e1 := syscall.Syscall(procWinHttpCloseHandle.Addr(), 1, uintptr(whi), 0, 0)
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if r1 == 0 {
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err = errnoErr(e1)
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}
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return
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}
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func winHTTPGetProxyForURL(whi winHTTPInternet, url *uint16, options *winHTTPAutoProxyOptions, proxyInfo *winHTTPProxyInfo) (err error) {
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r1, _, e1 := syscall.Syscall6(procWinHttpGetProxyForUrl.Addr(), 4, uintptr(whi), uintptr(unsafe.Pointer(url)), uintptr(unsafe.Pointer(options)), uintptr(unsafe.Pointer(proxyInfo)), 0, 0)
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if r1 == 0 {
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err = errnoErr(e1)
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}
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return
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}
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func winHTTPOpen(agent *uint16, accessType uint32, proxy *uint16, proxyBypass *uint16, flags uint32) (whi winHTTPInternet, err error) {
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r0, _, e1 := syscall.Syscall6(procWinHttpOpen.Addr(), 5, uintptr(unsafe.Pointer(agent)), uintptr(accessType), uintptr(unsafe.Pointer(proxy)), uintptr(unsafe.Pointer(proxyBypass)), uintptr(flags), 0)
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whi = winHTTPInternet(r0)
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if whi == 0 {
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err = errnoErr(e1)
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}
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return
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}
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