58 lines
940 B
C
58 lines
940 B
C
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/* $OpenBSD: resolv_display.c,v 1.1 1999/06/18 15:32:17 espie Exp $ */
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#include <netdb.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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extern int h_errno;
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int main(int argc, char *argv[])
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{
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struct hostent *ent;
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char *end;
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char *name;
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if (argc < 2)
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exit(EXIT_FAILURE);
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name = strdup(argv[1]);
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end = strchr(name, ':');
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if (end == name)
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{
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puts(end);
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exit(EXIT_SUCCESS);
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}
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if (end)
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*end = 0;
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ent = gethostbyname(name);
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if (!ent)
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{
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herror("maple");
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exit(EXIT_FAILURE);
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}
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if (end)
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*end = ':';
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else
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end = "";
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switch(ent->h_addrtype)
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{
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case AF_INET:
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if (ent->h_length == 4)
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{
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unsigned char *addr = ent->h_addr;
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printf("%u.%u.%u.%u%s\n", addr[0], addr[1], addr[2], addr[3], end);
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exit(EXIT_SUCCESS);
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}
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default:
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fprintf(stderr, "maple: unsupported address type %d\n", ent->h_addrtype);
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exit(EXIT_FAILURE);
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}
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}
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