79 lines
4.0 KiB
C
79 lines
4.0 KiB
C
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/*-*- 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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/dns/dns.h"
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#include "libc/log/log.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sock/sock.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/consts/ai.h"
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#include "libc/sysv/consts/ipproto.h"
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#include "libc/sysv/consts/sock.h"
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#include "tool/decode/lib/flagger.h"
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#include "tool/decode/lib/idname.h"
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#include "tool/decode/lib/socknames.h"
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void lookup(const char *name) {
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struct addrinfo hints = (struct addrinfo){.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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.ai_protocol = IPPROTO_TCP,
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.ai_flags = AI_NUMERICSERV};
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struct addrinfo *addrs = NULL;
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if (getaddrinfo(name, "80", &hints, &addrs) == -1) {
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perror("getaddrinfo");
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exit(1);
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}
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if (addrs) {
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for (struct addrinfo *addr = addrs; addr; addr = addr->ai_next) {
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const unsigned char *ip =
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addr->ai_family == AF_INET
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? (const unsigned char *)&((struct sockaddr_in *)addr->ai_addr)
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->sin_addr
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: (const unsigned char *)"\0\0\0\0";
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printf("%s = %s\n", "ai_flags",
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recreateflags(kAddrInfoFlagNames, addr->ai_flags), addr->ai_flags);
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printf("%s = %s (%d)\n", "ai_family",
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findnamebyid(kAddressFamilyNames, addr->ai_family),
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addr->ai_family);
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printf("%s = %s (%d)\n", "ai_socktype",
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findnamebyid(kSockTypeNames, addr->ai_socktype),
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addr->ai_socktype);
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printf("%s = %s (%d)\n", "ai_protocol",
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findnamebyid(kProtocolNames, addr->ai_protocol),
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addr->ai_protocol);
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printf("%s = %d\n", "ai_addrlen", addr->ai_addrlen);
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printf("%s = %hhu.%hhu.%hhu.%hhu\n", "ai_addr", ip[0], ip[1], ip[2],
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ip[3]);
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printf("%s = %s\n", "ai_canonname", addr->ai_canonname);
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}
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freeaddrinfo(addrs);
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} else {
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fprintf(stderr, "%s: %s\n", name, "no results");
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}
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}
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int main(int argc, char *argv[]) {
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for (int i = 1; i < argc; ++i) {
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lookup(argv[i]);
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}
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return 0;
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}
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