mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
5e8ae2d5bc
Continuous Integration (via runit and runitd) is now re-enabled on win7 and win10. The `make test` command, which runs the tests on all systems is now the fastest and most stable it's been since the project started. UBSAN is now enabled in MODE=dbg in addition to ASAN. Many instances of undefined behavior have been removed. Mostly things like passing a NULL argument to memcpy(), which works fine with Cosmopolitan Libc, but that doesn't prevents the compiler from being unhappy. There was an issue w/ GNU make where static analysis claims a sprintf() call can overflow. We also now have nicer looking crash reports on Windows since uname should now be supported and msys64 addr2line works reliably.
81 lines
3.9 KiB
C
81 lines
3.9 KiB
C
/*-*- 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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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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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/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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int rc;
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struct addrinfo *ai = NULL;
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struct addrinfo hint = {AI_NUMERICSERV, AF_INET, SOCK_STREAM, IPPROTO_TCP};
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switch ((rc = getaddrinfo(name, "80", &hint, &ai))) {
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case EAI_SUCCESS:
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break;
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case EAI_SYSTEM:
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perror("getaddrinfo");
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exit(1);
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default:
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fprintf(stderr, "getaddrinfo failed: %d (EAI_%s)\n", rc,
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gai_strerror(rc));
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exit(1);
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}
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if (ai) {
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for (struct addrinfo *addr = ai; 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("%-12s = %s\n", "ai_flags",
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RecreateFlags(kAddrInfoFlagNames, addr->ai_flags), addr->ai_flags);
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printf("%-12s = %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("%-12s = %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("%-12s = %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("%-12s = %d\n", "ai_addrlen", addr->ai_addrlen);
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printf("%-12s = %hhu.%hhu.%hhu.%hhu\n", "ai_addr", ip[0], ip[1], ip[2],
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ip[3]);
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printf("%-12s = %s\n", "ai_canonname", addr->ai_canonname);
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}
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freeaddrinfo(ai);
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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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int i;
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ShowCrashReports();
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for (i = 1; i < argc; ++i) lookup(argv[i]);
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return 0;
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}
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