mirror of
https://github.com/jart/cosmopolitan.git
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83 lines
4.3 KiB
C
83 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 net 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/sock/internal.h"
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#include "libc/sock/struct/sockaddr.internal.h"
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#include "libc/sock/struct/sockaddr6-bsd.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Converts sockaddr (Linux/Windows) → sockaddr_bsd (XNU/BSD).
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*/
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int sockaddr2bsd(const void *addr, uint32_t addrsize,
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union sockaddr_storage_bsd *out_addr, uint32_t *out_addrsize) {
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uint32_t len, famsize;
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if (addrsize >= sizeof(((struct sockaddr *)addr)->sa_family)) {
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if (((struct sockaddr *)addr)->sa_family == AF_INET) {
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if (addrsize >= sizeof(struct sockaddr_in)) {
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out_addr->sin.sin_len = 0;
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out_addr->sin.sin_family = AF_INET;
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out_addr->sin.sin_port = ((struct sockaddr_in *)addr)->sin_port;
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out_addr->sin.sin_addr = ((struct sockaddr_in *)addr)->sin_addr;
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bzero(&out_addr->sin.sin_zero, sizeof(out_addr->sin.sin_zero));
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*out_addrsize = sizeof(struct sockaddr_in_bsd);
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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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} else if (((struct sockaddr *)addr)->sa_family == AF_INET6) {
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if (addrsize >= sizeof(struct sockaddr_in6)) {
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out_addr->sin6.sin6_len = 0;
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out_addr->sin6.sin6_family = AF_INET6;
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out_addr->sin6.sin6_port = ((struct sockaddr_in6 *)addr)->sin6_port;
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out_addr->sin6.sin6_flowinfo =
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((struct sockaddr_in6 *)addr)->sin6_flowinfo;
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out_addr->sin6.sin6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr;
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out_addr->sin6.sin6_scope_id =
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((struct sockaddr_in6 *)addr)->sin6_scope_id;
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*out_addrsize = sizeof(struct sockaddr_in6_bsd);
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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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} else if (((struct sockaddr *)addr)->sa_family == AF_UNIX) {
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famsize = sizeof(((struct sockaddr_un *)addr)->sun_family);
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if (addrsize >= famsize &&
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(len = strnlen(((struct sockaddr_un *)addr)->sun_path,
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addrsize - famsize)) <
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sizeof(out_addr->sun.sun_path)) {
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out_addr->sun.sun_len = 0;
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out_addr->sun.sun_family = AF_UNIX;
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memcpy(out_addr->sun.sun_path, ((struct sockaddr_un *)addr)->sun_path,
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len);
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out_addr->sun.sun_path[len] = 0;
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*out_addrsize = sizeof(out_addr->sun.sun_len) +
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sizeof(out_addr->sun.sun_family) + len;
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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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} else {
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return epfnosupport();
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}
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} else {
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return einval();
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}
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}
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