mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
3fe7b95fd0
gethostbyname, gethostbyaddr follow simple implementations: they internally call getaddrinfo and getnameinfo respectively, and fill out the minimum details. remaining functions are stubs.
69 lines
3.6 KiB
C
69 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ This is free and unencumbered software released into the public domain. │
|
|
│ │
|
|
│ Anyone is free to copy, modify, publish, use, compile, sell, or │
|
|
│ distribute this software, either in source code form or as a compiled │
|
|
│ binary, for any purpose, commercial or non-commercial, and by any │
|
|
│ means. │
|
|
│ │
|
|
│ In jurisdictions that recognize copyright laws, the author or authors │
|
|
│ of this software dedicate any and all copyright interest in the │
|
|
│ software to the public domain. We make this dedication for the benefit │
|
|
│ of the public at large and to the detriment of our heirs and │
|
|
│ successors. We intend this dedication to be an overt act of │
|
|
│ relinquishment in perpetuity of all present and future rights to this │
|
|
│ software under copyright law. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
|
|
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
|
|
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
|
|
│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR │
|
|
│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │
|
|
│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR │
|
|
│ OTHER DEALINGS IN THE SOFTWARE. │
|
|
│ │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/dns/ent.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/sysv/consts/af.h"
|
|
|
|
struct hostent *gethostbyname(const char *name) {
|
|
static struct hostent *ptr0, he0;
|
|
struct addrinfo *result = NULL;
|
|
|
|
if (!ptr0) {
|
|
he0.h_name = NULL;
|
|
|
|
he0.h_aliases = (char **)malloc(sizeof(char *) * 1);
|
|
if (!he0.h_aliases) return NULL;
|
|
he0.h_aliases[0] = NULL;
|
|
|
|
he0.h_addrtype = AF_INET;
|
|
he0.h_length = 4;
|
|
he0.h_addr_list = (char **)malloc(sizeof(char *) * 2);
|
|
if (!he0.h_addr_list) return NULL;
|
|
|
|
he0.h_addr_list[0] = (char *)malloc(sizeof(uint32_t));
|
|
if (!he0.h_addr_list[0]) return NULL;
|
|
he0.h_addr_list[1] = NULL;
|
|
|
|
ptr0 = &he0;
|
|
}
|
|
|
|
if (getaddrinfo(name, NULL, NULL, &result) || result == NULL) return NULL;
|
|
|
|
if (ptr0->h_name) free(ptr0->h_name);
|
|
if (result->ai_canonname) {
|
|
ptr0->h_name = strdup(result->ai_canonname);
|
|
} else {
|
|
ptr0->h_name = strdup(name);
|
|
}
|
|
|
|
*((uint32_t *)ptr0->h_addr_list[0]) = (result->ai_addr4->sin_addr.s_addr);
|
|
/* TODO: if result has ai_next, fit multiple entries for h_addr_list */
|
|
|
|
freeaddrinfo(result);
|
|
return ptr0;
|
|
}
|