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71 lines
3.4 KiB
C
71 lines
3.4 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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│ │
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│ Musl Libc │
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│ Copyright © 2005-2014 Rich Felker, et al. │
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│ │
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│ Permission is hereby granted, free of charge, to any person obtaining │
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│ a copy of this software and associated documentation files (the │
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│ "Software"), to deal in the Software without restriction, including │
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│ without limitation the rights to use, copy, modify, merge, publish, │
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│ distribute, sublicense, and/or sell copies of the Software, and to │
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│ permit persons to whom the Software is furnished to do so, subject to │
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│ the following conditions: │
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│ │
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│ The above copyright notice and this permission notice shall be │
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│ included in all copies or substantial portions of the Software. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
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│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
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│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
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│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
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│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
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│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
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│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
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│ │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/ctype.h"
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#include "libc/fmt/conv.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/str/str.h"
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__static_yoink("musl_libc_notice");
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/**
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* Converts dotted IPv4 address string to network order binary.
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*/
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int inet_aton(const char *s0, struct in_addr *dest) {
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const char *s = s0;
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unsigned char *d = (void *)dest;
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unsigned long a[4] = {0};
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char *z;
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int i;
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for (i = 0; i < 4; i++) {
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a[i] = strtoul(s, &z, 0);
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if (z == s || (*z && *z != '.') || !isdigit(*s))
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return 0;
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if (!*z)
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break;
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s = z + 1;
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}
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if (i == 4)
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return 0;
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switch (i) {
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case 0:
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a[1] = a[0] & 0xffffff;
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a[0] >>= 24;
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case 1:
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a[2] = a[1] & 0xffff;
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a[1] >>= 16;
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case 2:
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a[3] = a[2] & 0xff;
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a[2] >>= 8;
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}
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for (i = 0; i < 4; i++) {
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if (a[i] > 255)
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return 0;
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d[i] = a[i];
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}
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return 1;
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}
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