mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
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/' ```
97 lines
4.4 KiB
C
97 lines
4.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/struct/fd.internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/asan.internal.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/nt/errors.h"
|
|
#include "libc/nt/thunk/msabi.h"
|
|
#include "libc/nt/winsock.h"
|
|
#include "libc/sock/internal.h"
|
|
#include "libc/sock/sock.h"
|
|
#include "libc/sock/struct/sockaddr.h"
|
|
#include "libc/sock/struct/sockaddr.internal.h"
|
|
#include "libc/sock/syscall_fd.internal.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
__msabi extern typeof(__sys_getsockname_nt) *const __imp_getsockname;
|
|
__msabi extern typeof(__sys_getpeername_nt) *const __imp_getpeername;
|
|
|
|
static int __getsockpeername(int fd, struct sockaddr *out_addr,
|
|
uint32_t *inout_addrsize, const char *name,
|
|
int impl_sysv(int, void *, uint32_t *),
|
|
int (*__msabi impl_win32)(uint64_t, void *,
|
|
uint32_t *)) {
|
|
int rc;
|
|
struct sockaddr_storage ss = {0};
|
|
uint32_t size = sizeof(ss);
|
|
|
|
if (IsWindows()) {
|
|
if (__isfdkind(fd, kFdSocket)) {
|
|
if ((rc = impl_win32(g_fds.p[fd].handle, &ss, &size))) {
|
|
if (impl_win32 == __imp_getsockname && WSAGetLastError() == WSAEINVAL) {
|
|
// The socket has not been bound to an address with bind, or
|
|
// ADDR_ANY is specified in bind but connection has not yet
|
|
// occurred. -MSDN
|
|
ss.ss_family = g_fds.p[fd].family;
|
|
rc = 0;
|
|
} else {
|
|
rc = __winsockerr();
|
|
}
|
|
}
|
|
} else {
|
|
rc = ebadf();
|
|
}
|
|
} else {
|
|
rc = impl_sysv(fd, &ss, &size);
|
|
}
|
|
|
|
if (!rc) {
|
|
if (IsBsd()) {
|
|
__convert_bsd_to_sockaddr(&ss);
|
|
}
|
|
__write_sockaddr(&ss, out_addr, inout_addrsize);
|
|
}
|
|
|
|
STRACE("%s(%d, [%s]) -> %d% lm", name, fd,
|
|
DescribeSockaddr(out_addr, inout_addrsize ? *inout_addrsize : 0), rc);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Returns details about network interface kernel granted socket.
|
|
* @return 0 on success or -1 w/ errno
|
|
* @see getpeername()
|
|
*/
|
|
int getsockname(int fd, struct sockaddr *out_addr, uint32_t *inout_addrsize) {
|
|
return __getsockpeername(fd, out_addr, inout_addrsize, "getsockname",
|
|
__sys_getsockname, __imp_getsockname);
|
|
}
|
|
|
|
/**
|
|
* Returns details about remote end of connected socket.
|
|
* @return 0 on success or -1 w/ errno
|
|
* @see getsockname()
|
|
*/
|
|
int getpeername(int fd, struct sockaddr *out_addr, uint32_t *inout_addrsize) {
|
|
return __getsockpeername(fd, out_addr, inout_addrsize, "getpeername",
|
|
__sys_getpeername, __imp_getpeername);
|
|
}
|