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https://github.com/jart/cosmopolitan.git
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e142124730
Our old code wasn't working with projects like Qt that call connect() in O_NONBLOCK mode multiple times. This change overhauls connect() to use a simpler WSAConnect() API and follows the same pattern as cosmo accept(). This change also reduces the binary footprint of read(), which no longer needs to depend on our enormous clock_gettime() function.
96 lines
4.3 KiB
C
96 lines
4.3 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/calls/internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/fds.h"
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#include "libc/intrin/strace.h"
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#include "libc/nt/errors.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/sockaddr.h"
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#include "libc/sock/struct/sockaddr.internal.h"
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#include "libc/sock/syscall_fd.internal.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/errfuns.h"
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__msabi extern typeof(__sys_getsockname_nt) *const __imp_getsockname;
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__msabi extern typeof(__sys_getpeername_nt) *const __imp_getpeername;
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static int __getsockpeername(int fd, struct sockaddr *out_addr,
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uint32_t *inout_addrsize, const char *name,
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int impl_sysv(int, void *, uint32_t *),
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int (*__msabi impl_win32)(uint64_t, void *,
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uint32_t *)) {
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int rc;
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struct sockaddr_storage ss = {0};
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uint32_t size = sizeof(ss);
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if (IsWindows()) {
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if (__isfdkind(fd, kFdSocket)) {
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if ((rc = impl_win32(g_fds.p[fd].handle, &ss, &size))) {
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if (impl_win32 == __imp_getsockname && WSAGetLastError() == WSAEINVAL) {
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// The socket has not been bound to an address with bind, or
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// ADDR_ANY is specified in bind but connection has not yet
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// occurred. -MSDN
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ss.ss_family = g_fds.p[fd].family;
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rc = 0;
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} else {
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rc = __winsockerr();
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}
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}
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} else {
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rc = ebadf();
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}
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} else {
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rc = impl_sysv(fd, &ss, &size);
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}
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if (!rc) {
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if (IsBsd()) {
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__convert_bsd_to_sockaddr(&ss);
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}
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__write_sockaddr(&ss, out_addr, inout_addrsize);
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}
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STRACE("%s(%d, [%s]) -> %d% lm", name, fd,
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DescribeSockaddr(out_addr, inout_addrsize ? *inout_addrsize : 0), rc);
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return rc;
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}
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/**
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* Returns details about network interface kernel granted socket.
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* @return 0 on success or -1 w/ errno
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* @see getpeername()
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*/
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int getsockname(int fd, struct sockaddr *out_addr, uint32_t *inout_addrsize) {
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return __getsockpeername(fd, out_addr, inout_addrsize, "getsockname",
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__sys_getsockname, __imp_getsockname);
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}
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/**
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* Returns details about remote end of connected socket.
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* @return 0 on success or -1 w/ errno
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* @see getsockname()
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*/
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int getpeername(int fd, struct sockaddr *out_addr, uint32_t *inout_addrsize) {
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return __getsockpeername(fd, out_addr, inout_addrsize, "getpeername",
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__sys_getpeername, __imp_getpeername);
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}
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