mirror of
https://github.com/jart/cosmopolitan.git
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88 lines
3.9 KiB
C
88 lines
3.9 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=8 sw=8 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/sock/struct/sockaddr.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/str/str.h"
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#include "libc/fmt/conv.h"
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#include "libc/limits.h"
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#include "libc/sock/sock.h"
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#include "libc/ctype.h"
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#include "third_party/musl/lookup.internal.h"
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__static_yoink("musl_libc_notice");
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int __lookup_ipliteral(struct address buf[static 1], const char *name, int family)
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{
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struct in_addr a4;
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struct in6_addr a6;
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if (inet_aton(name, &a4) > 0) {
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if (family == AF_INET6) /* wrong family */
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return EAI_NODATA;
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memcpy(&buf[0].addr, &a4, sizeof a4);
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buf[0].family = AF_INET;
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buf[0].scopeid = 0;
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return 1;
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}
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char tmp[64];
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char *p = strchr(name, '%'), *z;
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unsigned long long scopeid = 0;
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if (p && p-name < 64) {
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memcpy(tmp, name, p-name);
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tmp[p-name] = 0;
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name = tmp;
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}
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if (inet_pton(AF_INET6, name, &a6) <= 0)
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return 0;
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if (family == AF_INET) /* wrong family */
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return EAI_NODATA;
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memcpy(&buf[0].addr, &a6, sizeof a6);
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buf[0].family = AF_INET6;
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if (p) {
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if (isdigit(*++p)) scopeid = strtoull(p, &z, 10);
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else z = p-1;
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if (*z) {
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#if 1
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// todo(jart): do something
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return EAI_NONAME;
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#else
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if (!IN6_IS_ADDR_LINKLOCAL(&a6) &&
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!IN6_IS_ADDR_MC_LINKLOCAL(&a6))
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return EAI_NONAME;
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scopeid = if_nametoindex(p);
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if (!scopeid)
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return EAI_NONAME;
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#endif
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}
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if (scopeid > UINT_MAX)
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return EAI_NONAME;
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}
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buf[0].scopeid = scopeid;
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return 1;
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}
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