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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/' ```
94 lines
4 KiB
C
94 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 2020 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/assert.h"
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#include "libc/calls/struct/timeval.h"
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#include "libc/nt/struct/linger.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/sock/internal.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/struct/linger.h"
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#include "libc/sock/syscall_fd.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/so.h"
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#include "libc/sysv/consts/sol.h"
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#include "libc/sysv/errfuns.h"
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#ifdef __x86_64__
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__msabi extern typeof(__sys_getsockopt_nt) *const __imp_getsockopt;
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textwindows int sys_getsockopt_nt(struct Fd *fd, int level, int optname,
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void *out_opt_optval,
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uint32_t *inout_optlen) {
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uint64_t ms;
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uint32_t in_optlen;
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struct linger_nt linger;
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npassert(fd->kind == kFdSocket);
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if (out_opt_optval && inout_optlen) {
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in_optlen = *inout_optlen;
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} else {
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in_optlen = 0;
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}
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if (level == SOL_SOCKET &&
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(optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)) {
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if (in_optlen >= sizeof(struct timeval)) {
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if (optname == SO_RCVTIMEO) {
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ms = fd->rcvtimeo;
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} else {
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ms = fd->sndtimeo;
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}
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((struct timeval *)out_opt_optval)->tv_sec = ms / 1000;
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((struct timeval *)out_opt_optval)->tv_usec = ms % 1000 * 1000;
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*inout_optlen = sizeof(struct timeval);
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return 0;
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} else {
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return einval();
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}
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}
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// TODO(jart): Use WSAIoctl?
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if (__imp_getsockopt(fd->handle, level, optname, out_opt_optval,
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inout_optlen) == -1) {
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return __winsockerr();
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}
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if (level == SOL_SOCKET) {
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if (optname == SO_LINGER && in_optlen == sizeof(struct linger)) {
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linger = *(struct linger_nt *)out_opt_optval;
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((struct linger *)out_opt_optval)->l_onoff = !!linger.l_onoff;
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((struct linger *)out_opt_optval)->l_linger = linger.l_linger;
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*inout_optlen = sizeof(struct linger);
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}
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}
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if (in_optlen == 4 && *inout_optlen == 1) {
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// handle cases like this
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// getsockopt(8, SOL_TCP, TCP_FASTOPEN, [u"☺"], [1]) → 0
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int32_t wut = *(signed char *)out_opt_optval;
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memcpy(out_opt_optval, &wut, 4);
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*inout_optlen = 4;
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}
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return 0;
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}
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#endif /* __x86_64__ */
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