## modules/wh/wh_queries.c

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## FUNCTIONS

This source file includes following functions.

1. WH_connect
2. WH_sock

       1 /***************************************
       2   $Revision: 1.7 $
       3
       4   Whois query (wh) - connects to a whois server and returns result
       5
       6   Status: NOT REVIEWED, TESTED
       7
       8   Design and implementation by: Marek Bukowy
       9
      10   Note:  still not final. Probably SK calls should be moved to the
      11          calling routine
      12
      13   ******************/ /******************
      14   Copyright (c) 1999                              RIPE NCC
      15
      16   All Rights Reserved
      17
      18   Permission to use, copy, modify, and distribute this software and its
      19   documentation for any purpose and without fee is hereby granted,
      20   provided that the above copyright notice appear in all copies and that
      21   both that copyright notice and this permission notice appear in
      22   supporting documentation, and that the name of the author not be
      23   used in advertising or publicity pertaining to distribution of the
      24   software without specific, written prior permission.
      25
      26   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
      27   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
      28   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
      29   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
      30   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      31   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      32   ***************************************/
      33
      34 #include <sys/types.h>
      35 #include <sys/socket.h>
      36 #include <netinet/in.h>
      37 #include <netdb.h>
      38 #include <stdio.h>
      39
      40 #include <erroutines.h>
      41 #include "socket.h"
      42
      43 /*+ opens a connection to hostname and queries it,
      44   sets sock to the socket number it got for this connection.
      45
      46   All reading and possibly other queries must be performed by
      47   the caller.
      48 +*/
      49 er_ret_t
      50 WH_connect(int *sock, char *hostname, int port)
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      51 {
      52
      53   struct sockaddr_in sin;
      54   struct hostent *hp;
      55   int s;
      56
      57 #if 0
      58   char log_str[256];
      59   sprintf(log_str, "would perform query >%s< to %s:%d  \n"
      60           "limits: line %d tmout %d and print on socket %d\n",
      61           query,hostname,port, maxlines,timeout,sock );
      62   log_inst_print(log_str);
      63 #endif
      64
      65   if ( (hp = gethostbyname(hostname)) == NULL) {
      66     return WH_BADHOST;
      67   }
      68
      69   s = socket(AF_INET, SOCK_STREAM, 0);
      70   if (s < 0) {
      71     return WH_SOCKET;
      72   }
      73
      74   bzero((caddr_t)&sin, sizeof (sin));
      75   sin.sin_family = hp->h_addrtype;
      76   if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
      77     close(s);
      78     return WH_BIND;
      79   }
      80   bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length);
      81   sin.sin_port=htons(port);
      82
      83   if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
      84     close(s);
      85     return WH_CONNECT;
      86   }
      87
      88   /*  SK_puts(sock, "% Connection established...\n"); */
      89
      90   *sock = s;
      91
      92   return WH_OK;
      93 }
      94
      95
      96
      97 /*+ opens a whois connection to hostname, queries it and
      98   prints result on sock +*/
      99 er_ret_t
     100 WH_sock(int sock, char *hostname, int port,
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     101         char *query, int maxlines, int timeout)
     102 {
     103   int s;
     104   int ch;
     105   er_ret_t err;
     106
     107  if( (err = WH_connect(&s, hostname, port)) != WH_OK ) {
     108    return err;
     109  }
     110  else {
     111 #if 1
     112   {
     113     FILE *sfi;
     114     FILE *sfo;
     115
     116     sfi = fdopen(s, "r");
     117     sfo = fdopen(s, "w");
     118     if (sfi == NULL || sfo == NULL) {
     119       (void)close(s);
     120       return WH_OPEN;
     121     }
     122
     123     fprintf(sfo, "%s\r\n", query);
     124     fflush(sfo);
     125
     126     while ((ch = getc(sfi)) != EOF) {
     127       SK_putc(sock,ch);
     128     }
     129
     130     fclose(sfo);
     131     fclose(sfi);
     132   }
     133 #else
     134   SK_puts(s, query);
     135   SK_puts(s, "\r\n");
     136
     137   while( (ch = SK_getc(s)) != EOF ) {
     138     SK_putc(sock,ch);
     139   }
     140 #endif
     141   close(s);
     142
     143
     144
     145   return WH_OK;
     146  } /* if OK */
     147 }
     148

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