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https://github.com/jart/cosmopolitan.git
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394d998315
At least in neovim, `│vi:` is not recognized as a modeline because it has no preceding whitespace. After fixing this, opening a file yields an error because `net` is not an option. (`noet`, however, is.)
75 lines
3.6 KiB
C
75 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 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/sock/struct/sockaddr.h"
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#include "libc/macros.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/struct/sockaddr6.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/af.h"
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// computes byte length of socket address
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uint8_t __get_sockaddr_len(const struct sockaddr_storage *addr) {
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if (addr->ss_family == AF_INET) {
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return sizeof(struct sockaddr_in);
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} else if (addr->ss_family == AF_INET6) {
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return sizeof(struct sockaddr_in6);
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} else if (addr->ss_family == AF_UNIX) {
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struct sockaddr_un *sun = (struct sockaddr_un *)addr;
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return sizeof(sun->sun_family) +
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strnlen(sun->sun_path, sizeof(sun->sun_path)) + 1;
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} else {
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return sizeof(struct sockaddr_storage);
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}
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}
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// converts bsd sockaddr to cosmo abi
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void __convert_bsd_to_sockaddr(struct sockaddr_storage *addr) {
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union {
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struct sockaddr cosmo;
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struct sockaddr_bsd bsd;
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} *pun = (void *)addr;
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pun->cosmo.sa_family = pun->bsd.sa_family;
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}
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// converts cosmo sockaddr abi to bsd
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void __convert_sockaddr_to_bsd(struct sockaddr_storage *addr) {
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uint8_t len;
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union {
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struct sockaddr cosmo;
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struct sockaddr_bsd bsd;
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} *pun = (void *)addr;
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len = __get_sockaddr_len(addr);
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pun->bsd.sa_family = pun->cosmo.sa_family;
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pun->bsd.sa_len = len;
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}
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// copies sockaddr from internal memory to user's buffer
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void __write_sockaddr(const struct sockaddr_storage *addr, void *out_addr,
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uint32_t *inout_addrsize) {
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if (!out_addr) return;
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if (!inout_addrsize) return;
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uint32_t insize = *inout_addrsize;
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if (insize) bzero(out_addr, insize);
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uint32_t outsize = __get_sockaddr_len(addr);
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uint32_t copysize = MIN(insize, outsize);
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if (copysize) memcpy(out_addr, addr, copysize);
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*inout_addrsize = outsize;
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}
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