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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
61 lines
3.4 KiB
C
61 lines
3.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/nt/enum/sio.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/winsock.h"
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#include "libc/sock/internal.h"
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#include "libc/sock/sock.h"
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static textwindows int64_t GetNtBspSocket(int64_t socket, uint32_t ioctl) {
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uint32_t bytes;
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int64_t bsp_socket;
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if (WSAIoctl(socket, ioctl, NULL, 0, &bsp_socket, sizeof(bsp_socket), &bytes,
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NULL, NULL) != -1) {
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return bsp_socket;
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} else {
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return -1;
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}
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}
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textwindows int64_t GetNtBaseSocket(int64_t socket) {
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int64_t base_socket;
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for (;;) {
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base_socket = GetNtBspSocket(socket, kNtSioBaseHandle);
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if (base_socket != -1) return base_socket;
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if (WSAGetLastError() == WSAENOTSOCK) return __winsockerr();
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/*
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* Even though Microsoft documentation clearly states that Layered
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* Spyware Providers must never ever intercept the SIO_BASE_HANDLE
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* ioctl, Komodia LSPs (that Lenovo got sued for preinstalling) do
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* so anyway in order to redirect decrypted https requests through
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* some foreign proxy and inject ads which breaks high-performance
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* network event io. However it doesn't handle SIO_BSP_HANDLE_POLL
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* which will at least let us obtain the socket associated with the
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* next winsock protocol chain entry. If this succeeds, loop around
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* and call SIO_BASE_HANDLE again with the returned BSP socket, to
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* make sure we unwrap all layers and retrieve the real base socket.
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*/
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base_socket = GetNtBspSocket(socket, kNtSioBspHandlePoll);
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if (base_socket != -1 && base_socket != socket) {
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socket = base_socket;
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} else {
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return __winsockerr();
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}
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}
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}
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