48 lines
2.6 KiB
C
48 lines
2.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net 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/fmt/fmt.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/sysv/errfuns.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/consts/inaddr.h"
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/**
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* Converts internet address string to binary.
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*
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* @param af can be AF_INET
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* @param src is the ASCII-encoded address
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* @param dst is where the binary-encoded net-order address goes
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* @return 1 on success, 0 on src malformed, or -1 w/ errno
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*/
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int inet_pton(int af, const char *src, void *dst) {
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if (af == AF_INET) {
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unsigned char *p = (unsigned char *)dst;
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if (sscanf(src, "%hhu.%hhu.%hhu.%hhu", &p[0], &p[1], &p[2], &p[3]) == 4) {
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return 1;
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} else {
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*(uint32_t *)dst = htonl(INADDR_TESTNET3);
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return 0;
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}
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} else {
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*(uint32_t *)dst = htonl(INADDR_TESTNET3);
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return eafnosupport();
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}
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}
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