mirror of
https://github.com/jart/cosmopolitan.git
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86 lines
4 KiB
C
86 lines
4 KiB
C
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/*-*- 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/errno.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/str/str.h"
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#include "libc/sysv/consts/ipproto.h"
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#include "third_party/musl/lookup.internal.h"
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#include "third_party/musl/netdb.h"
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asm(".ident\t\"\\n\\n\
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Musl libc (MIT License)\\n\
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Copyright 2005-2014 Rich Felker, et. al.\"");
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asm(".include \"libc/disclaimer.inc\"");
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#define ALIGN (sizeof(struct { char a; char *b; }) - sizeof(char *))
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errno_t getservbyname_r(const char *name, const char *prots,
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struct servent *se, char *buf, size_t buflen, struct servent **res)
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{
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struct service servs[MAXSERVS];
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int cnt, proto, align;
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*res = 0;
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/* Don't treat numeric port number strings as service records. */
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char *end = "";
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strtoul(name, &end, 10);
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if (!*end) return ENOENT;
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/* Align buffer */
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align = -(uintptr_t)buf & (ALIGN-1);
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if (buflen < 2*sizeof(char *)+align)
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return ERANGE;
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buf += align;
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if (!prots) proto = 0;
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else if (!strcmp(prots, "tcp")) proto = IPPROTO_TCP;
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else if (!strcmp(prots, "udp")) proto = IPPROTO_UDP;
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else return EINVAL;
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cnt = __lookup_serv(servs, name, proto, 0, 0);
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if (cnt<0) switch (cnt) {
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case EAI_MEMORY:
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case EAI_SYSTEM:
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return ENOMEM;
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default:
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return ENOENT;
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}
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se->s_name = (char *)name;
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se->s_aliases = (void *)buf;
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se->s_aliases[0] = se->s_name;
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se->s_aliases[1] = 0;
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se->s_port = htons(servs[0].port);
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se->s_proto = servs[0].proto == IPPROTO_TCP ? "tcp" : "udp";
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*res = se;
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return 0;
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}
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