来源: BlogBus 原始链接: http://www.blogbus.com:80/blogbus/blog/index.php?blogid=37891&m=20041012 存档链接: https://web.archive.org/web/20041124162932id_/http://www.blogbus.com:80/blogbus/blog/index.php?blogid=37891&m=20041012

int NO_B_connect ( char ht_net , int port , int s ){ struct sockaddr_in myaddr ; struct hostent * hp ; struct in_addr ** Pptr ; struct timeval tmval ; int Sfd ; int flags ; int n ; int error ; int len ; fd_set rd_set ; fd_set wt_set ; if(( Sfd

socket ( AF_INET , SOCK_STREAM , 0 )) < 0 ) return - 1 ; myaddr . sin_family

AF_INET ; myaddr . sin_port

htons ( port ); myaddr . sin_addr . s_addr

inet_addr ( ht_net ); flags

fcntl ( Sfd , F_GETFL , 0 ); fcntl ( Sfd , F_SETFL , flags | O_NONBLOCK ); error

0 ; if(( n

connect ( Sfd ,( struct sockaddr *)& myaddr , sizeof ( myaddr ))) < 0 ){ if( errno != EINPROGRESS ) return - 1 ; } if( n

0 ){ fcntl ( Sfd , F_SETFL , flags ); if( error ){ close ( Sfd ); return - 1 ; } } FD_ZERO (& rd_set ); FD_SET ( Sfd ,& rd_set ); wt_set

rd_set ; tmval . tv_sec

s ; tmval . tv_usec

0 ; if(( n

select ( Sfd + 1 ,& rd_set ,& wt_set , NULL , s ? & tmval : NULL )) == 0 ){ close ( Sfd ); errno

ETIMEDOUT ; return - 1 ; } if( FD_ISSET ( Sfd ,& rd_set ) || FD_ISSET ( Sfd ,& wt_set )){ len

sizeof ( error ); if( getsockopt ( Sfd , SOL_SOCKET , SO_ERROR ,& error ,& len ) < 0 ){ return - 1 ; }else{ error

1 ; } } return Sfd ; } // no block connect void send_opts ( int sock , unsigned char * a ) { char will [] = { IAC , WILL , 0 , 0 }; char wont [] = { IAC , WONT , 0 , 0 }; while( strlen (( char ) a ) > 0 ) { if( a [ 0 ] == IAC ){ if( a [ 1 ] == DO){ will [ 2 ] = a [ 2 ]; write ( sock ,( char ) will , strlen ( will )); }else if( a [ 1 ] == DONT ) { wont [ 2 ] = a [ 2 ]; write ( sock ,( char ) wont , strlen ( wont )); } } a += 3 ; } } static int New_read ( int fd , char ptr ){ static int c

0 ; static char * rd_ptr ; static char rd_buf [ 1024 ]; if( c <= 0 ){ while( errno

EINTR ){ if(( c

read ( fd , rd_buf , sizeof ( rd_buf ))) > 0 ) break; } return - 1 ; }else { if( c

0 ) return 0 ; } rd_ptr

rd_buf ; c --; * ptr = * rd_ptr ++; return 1 ; } int readaline ( int fd , char * ptr , int len , int n ){ int count ; int num ; char * c ; char * Pptr ; Pptr

ptr ; for( num

1 ; num < len ; num ++){ if(( count

New_read ( fd , c )) == 1 ){ if ( num

1 ){ * ptr ++= (* c ); if((* c ) == '\n' ) break; }else{ if((* c ) == '\n' ) break; * ptr ++= (* c ); } }else if( count

0 ){ if( num

1 ) return 0 ; else break; }else return - 1 ; } * Pptr

0 ; return n ; } // read a line from fd,you can use "getline()" also,look it up "man" int Compare_strs ( char * str1 , char * str2 ){ if(( strstr ( str1 , str2 ) != NULL ) && ((( str1 + 7 + strlen ( str2 )) == '\r' ) || (( str1 + 7 + strlen ( str2 )) == '\n' ))) return 1 ; else return - 1 ; } // Compare two strings int Get_tsn ( char * host , int t_out ){ int i ; int Sock ; int r ; int lin ; char fst_rd_buf [ 255 ]; char sec_rd_buf [ 255 ]; char buffer [ 255 ]; char fst_temp [ 256 ]; char sec_temp [ 256 ]; FILE * FP ; bzero ( fst_rd_buf , sizeof ( fst_rd_buf )); bzero ( sec_rd_buf , sizeof ( sec_rd_buf )); bzero ( buffer , sizeof ( buffer )); bzero ( fst_temp , sizeof ( fst_temp )); bzero ( sec_temp , sizeof ( sec_temp )); if(( Sock

NO_B_connect ( host , 23 , t_out )) < 0 ){ return - 1 ; } if(( lin

readaline ( Sock , fst_rd_buf , sizeof ( fst_rd_buf ), 1 )) < 0 ){ return - 1 ; } for( i

0 ; i < strlen ( fst_rd_buf ); i ++){ sprintf ( fst_temp + i , "%d" , fst_rd_buf [ i ]& 0xff ); } fst_temp [ strlen ( fst_temp )- 1 ] = 0 ; send_opts ( Sock , fst_rd_buf ); if(( lin

readaline ( Sock , sec_rd_buf , sizeof ( sec_rd_buf ), 1 )) < 0 ){ return - 1 ; } for( i

0 ; i < strlen ( sec_rd_buf ); i ++){ sprintf ( sec_temp + i , "%d" , sec_rd_buf [ i ]& 0xff ); } sec_temp [ strlen ( sec_temp )- 1 ] = 0 ; send_opts ( Sock , fst_rd_buf ); close ( Sock ); if(( FP

fopen ( DB_FPS , "r" )) == NULL ){ perror ( "fopen" ); return 0 ; } for(; { if( feof ( FP )) break; fgets ( buffer , 255 , FP ); if( Compare_strs ( buffer , fst_temp ) > 0 ){ fgets ( buffer , 255 , FP ); if( Compare_strs ( buffer , sec_temp ) > 0 ){ printf ( "[+] Host:%s maybe: " , host ); for(; { fgets ( buffer , 255 , FP ); printf ( "%s" , buffer ); if(( buffer [ 0 ] == '\r' ) || ( buffer [ 0 ] == '\n' )) break; } } } } return Sock ; } int TSN_Scan ( char * start , char * end , int tt_out ){ unsigned long startip ; unsigned long endip ; unsigned long startIP ; unsigned long endIP ; unsigned long sum ; struct sockaddr_in myaddr ; char host [ 100 ]; bzero ( host , sizeof ( host )); startip

inet_addr ( start ); endip

inet_addr ( end ); startIP

ntohl ( startip ); endIP

ntohl ( endip ); for( sum

startIP ; sum <= endIP ; sum ++){ if(( sum & 0xff ) == 255 ) sum ++; if(( sum & 0xff ) == 0 ) sum ++; myaddr . sin_addr . s_addr

htonl ( sum ); strncpy ( host , inet_ntoa ( myaddr . sin_addr ), sizeof ( host )); Get_tsn ( host , tt_out ); } return 0 ; } /* ** Main program */ int main ( int c , char * v []){ int Timeout ; if( c < 3 || c

4 ){ Usage ( v [ 0 ]); return 0 ; } if( c

4 ){ Timeout

atoi ( v [ 3 ]); }else{ Timeout

TM_OUT ; } fprintf ( stderr , "[#] Now,start scaning <%s> to <%s>...\n\n" , v [ 1 ], v [ 2 ]); sleep ( 1 ); if( TSN_Scan ( v [ 1 ], v [ 2 ], Timeout ) != 0 ){ perror ( "TSN_Scan" ); return - 1 ; } return 0 ; } /* ** End / / ** Love My lover && kiz Lu */ Telnet fingerprint 方式鉴别操作系统的扫描器. 该种方式的优点是比IP stack等快,但不是很准确. fps库base64编码后贴在下面,不是很全,并且有些老,大家帮忙多收集一些,谢谢了: I3RlbG5ldGZwIGZpbmdlcnByaW50cwojc2VuZCBtb3JlIGZpbmdlcnByaW50cyB0bzogcGExbWVy c0BnbXguZGUKIyBhICcqJyBtZWFuczogYWZ0ZXIgdGhpcyBhbnl0aGluZyBtYXkgZm9sbG93CiMg YSAnPycgcmVwcmVzZW50cyBubyBvciBhbnkgcG9zc2libGUgYnl0ZQoKRE86ICAgMjU1IDI1MyAy NCAyNTUgMjUzIDMyIDI1NSAyNTMgMzUgMjU1IDI1MyAzOQpET05UOiAyNTUgMjUwIDMyIDEgMjU1 IDI0MCAyNTUgMjUwIDM1IDEgMjU1IDI0MCAyNTUgMjUwIDM5IDEgMjU1IDI0MCAyNTUgMjUwIDI0 IDEgMjU1IDI0MApMaW51eAoKRE86ICAgMTE2IDEwMSAxMDggMTEwIDEwMSAxMTYgMTAwIDU4IDMy IDk3IDU4IDMyIDExNyAxMTAgMTA3IDExMCAxMTEgMTE5IDExMCAzMiAxMTEgMTEyIDExNiAxMDUg MTExIDExMCAxMCA4NSAxMTUgOTcKRE9OVDogMTAzIDEwMSA1OCAzMiAxMTYgMTAxIDEwOCAxMTAg 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