calmsacibis995
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#include <netdb.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <netdb.h>
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char HostA[][30]={"192.48.174.2","150.166.61.60","150.166.75.28",\
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"150.166.75.20","150.166.75.14","192.26.80.10","192.26.80.202",\
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"150.166.75.45"};
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void main(){
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int n, i, j;
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struct hostent * s;
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int addrlen;
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struct in_addr in;
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struct in_addr * inp;
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n = sizeof( HostA )/30;
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for( i = 0; i < n; i++ ){
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fprintf( stdout, "main: HostA(%s)\n", HostA[ i ] );
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fflush( stdout );
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inet_aton( HostA[ i ], &in );
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addrlen = sizeof(struct in_addr);
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if(( s =gethostbyaddr( (void *)&in, addrlen, AF_INET))==NULL){
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fprintf( stdout, "main: gethostbyaddr() failed, errno=(%d,>%s<)\n",\
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h_errno, hstrerror( errno ) );
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}else{
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fprintf( stdout, "main: h_name->%s<\n", s->h_name );
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fprintf( stdout, "main: h_length->%u<\n", s->h_length );
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fprintf( stdout, "main: h_addrtype->%s<\n",\
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(s->h_addrtype==AF_INET)?"AF_INET":"UNKNOWN" );
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for( j = 0; s->h_aliases[ j ] != NULL; j++ ){
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fprintf( stdout, "main: h_aliases[%d]->%s<\n", j,\
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s->h_aliases[ j ] );
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}
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for( j = 0; s->h_addr_list[ j ] != NULL; j++ ){
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inp = (struct in_addr *)s->h_addr_list[ j ];
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fprintf( stdout, "main: h_addr_list[%d]->%x<\n", j, inp->s_addr );
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fprintf( stdout, "main: h_addr_list[%d]->%s<\n", j,\
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inet_ntoa( *inp ));
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}
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}
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}
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}
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