mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
1a96de6eda
Locally modified to get nameservers from Windows Registry when `\etc\resolv.conf` isn't defined.
72 lines
4 KiB
C
72 lines
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/calls/syscall_support-nt.internal.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/describentoverlapped.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/intrin/likely.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/thunk/msabi.h"
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#include "libc/nt/winsock.h"
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#include "libc/runtime/runtime.h"
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__msabi extern typeof(WSARecvFrom) *const __imp_WSARecvFrom;
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/**
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* Receives data from Windows socket.
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* @return 0 on success, or -1 on failure
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*/
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textwindows int WSARecvFrom(
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uint64_t s, const struct NtIovec *inout_lpBuffers, uint32_t dwBufferCount,
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uint32_t *opt_out_lpNumberOfBytesRecvd, uint32_t *inout_lpFlags,
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void *opt_out_fromsockaddr, uint32_t *opt_inout_fromsockaddrlen,
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struct NtOverlapped *opt_inout_lpOverlapped,
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const NtWsaOverlappedCompletionRoutine opt_lpCompletionRoutine) {
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int rc;
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#if SYSDEBUG && _NTTRACE
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uint32_t NumberOfBytesRecvd;
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if (opt_out_lpNumberOfBytesRecvd) {
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NumberOfBytesRecvd = *opt_out_lpNumberOfBytesRecvd;
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}
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rc = __imp_WSARecvFrom(s, inout_lpBuffers, dwBufferCount, &NumberOfBytesRecvd,
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inout_lpFlags, opt_out_fromsockaddr,
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opt_inout_fromsockaddrlen, opt_inout_lpOverlapped,
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opt_lpCompletionRoutine);
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if (opt_out_lpNumberOfBytesRecvd) {
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*opt_out_lpNumberOfBytesRecvd = NumberOfBytesRecvd;
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}
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if (UNLIKELY(__strace > 0) && strace_enabled(0) > 0) {
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kprintf(STRACE_PROLOGUE "WSARecvFrom(%lu, [", s);
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DescribeIovNt(inout_lpBuffers, dwBufferCount,
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rc != -1 ? NumberOfBytesRecvd : 0);
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kprintf("], %u, [%'u], %p, %p, %p, %s, %p) → %d %d\n", dwBufferCount,
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NumberOfBytesRecvd, opt_out_fromsockaddr, opt_inout_fromsockaddrlen,
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inout_lpFlags, DescribeNtOverlapped(opt_inout_lpOverlapped),
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opt_lpCompletionRoutine, rc, GetLastError());
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}
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#else
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rc = __imp_WSARecvFrom(s, inout_lpBuffers, dwBufferCount,
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opt_out_lpNumberOfBytesRecvd, inout_lpFlags,
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opt_out_fromsockaddr, opt_inout_fromsockaddrlen,
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opt_inout_lpOverlapped, opt_lpCompletionRoutine);
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#endif
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return rc;
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}
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