Source File modules/pw/protocol_whois.c

    1    | /***************************************
    2    |   $Revision: 1.25 $
    3    |
    4    |   Protocol whois module (pw).  Whois protocol.
    5    |
    6    |   Status: NOT REVUED, TESTED
    7    |
    8    |   ******************/ /******************
    9    |   Filename            : protocol_whois.c
    10   |   Authors             : ottrey@ripe.net
    11   |                         marek@ripe.net
    12   |   OSs Tested          : Solaris
    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   | #include <stdio.h>
    34   | #include <glib.h>
    35   |
    36   | #include "NAME"
    37   |
    38   | #include "defs.h"
    39   | #include "protocol_whois.h"
    40   | #include "mysql_driver.h"
    41   | #include "query_command.h"
    42   | #include "query_instructions.h"
    43   | #include "constants.h"
    44   | /*
    45   | #include "objects.h"
    46   | */
    47   | #include "access_control.h"
    48   | #include "socket.h"
    49   | #include "stubs.h"
    50   |
    51   | #include  <sys/time.h> /* in Solaris, or time.h in BSD,
    52   | 			    wrrrr... the fun begins... */
    53   |
    54   | void print_hello_banner(Query_environ *qe) {
    55   |   SK_cd_puts(&(qe->condat), CVS_NAME);
    56   |   SK_cd_puts(&(qe->condat), "% Rights restricted by copyright. \n% See http://www.ripe.net/ripencc/pub-services/db/copyright.html\n");
    57   |
    58   | #if 0
    59   |   /* Send the environment aswell. */
    60   |   SK_cd_puts(&(qe->condat), "% Environment={");
    61   |   str1 = QC_environ_to_string(*qe);
    62   |   SK_cd_puts(&(qe->condat), str1);
    63   |   wr_free(str1);
    64   |   SK_cd_puts(&(qe->condat), "}\n");
    65   | #endif
    66   |
    67   |   SK_cd_puts(&(qe->condat), "\n");
    68   | }
    69   |
    70   | /* PW_interact() */
    71   | /*++++++++++++++++++++++++++++++++++++++
    72   |   Interact with the client.
    73   |
    74   |   int sock Socket that client is connected to.
    75   |
    76   |   More:
    77   |   +html+ <PRE>
    78   |   Authors:
    79   |         ottrey
    80   |
    81   |   +html+ </PRE><DL COMPACT>
    82   |   +html+ <DT>Online References:
    83   |   +html+ <DD><UL>
    84   |   +html+ </UL></DL>
    85   |
    86   |   ++++++++++++++++++++++++++++++++++++++*/
    87   | void PW_interact(int sock) {
    88   |   char input[MAX_INPUT_SIZE];
    89   |   int read_result;
    90   |   char *hostaddress=NULL;
    91   |   acl_st acl_rip,   acl_eip;
    92   |   acc_st acc_credit, copy_credit;
    93   |   int permanent_ban=0;
    94   |   Query_environ *qe=NULL;
    95   |   Query_instructions *qis=NULL;
    96   |   Query_command *qc=NULL;
    97   |   GList *qitem;
    98   |   int new_connection=1;
    99   |   int acc_deny=0;
    100  |   struct timeval begintime, endtime;
    101  |   er_ret_t err;
    102  |
    103  |   /* Get the IP of the client */
    104  |   hostaddress = SK_getpeername(sock);
    105  |   ER_dbg_va(FAC_PW, 1, "connection from %s", hostaddress);
    106  |
    107  |   /* Initialize the query environment. */
    108  |   qe = QC_environ_new(hostaddress, sock);
    109  |
    110  |   /* init to zeros */
    111  |   memset( &(qe->condat), 0, sizeof(sk_conn_st));
    112  |
    113  |   /* set the connection data: both rIP and eIP to real IP */
    114  |   qe->condat.sock = sock;
    115  |   qe->condat.ip = hostaddress;
    116  |   SK_getpeerip(sock, &(qe->condat.rIP));
    117  |   qe->condat.eIP = qe->condat.rIP;
    118  |
    119  |   /* see if we should be talking at all */
    120  |   /* check the acl using the realIP, get a copy applicable to this IP */
    121  |   AC_check_acl( &(qe->condat.rIP), NULL, &acl_rip);
    122  |   if( acl_rip.deny ) {
    123  |     permanent_ban=1;
    124  |   }
    125  |
    126  |   /* XXX log new connection here ?*/
    127  |
    128  |   do {
    129  |     /* Read input */
    130  |     read_result = SK_cd_gets(&(qe->condat), input, MAX_INPUT_SIZE);
    131  |
    132  |
    133  |     gettimeofday(&begintime, NULL);
    134  |
    135  |     /* read_result < 0 is an error and connection should be closed */
    136  |     if (read_result < 0 ) {
    137  |       /*  XXX log the fact, rtc was set */
    138  |       /* EMPTY */
    139  |     }
    140  |
    141  |     qc = QC_create(input, qe);
    142  |
    143  |     /* ADDRESS PASSING: check if -V option has passed IP in it */
    144  |     if( ! STRUCT_EQUAL(qe->pIP,IP_ADDR_UNSPEC)) {
    145  |       if(acl_rip.trustpass) {
    146  | 	acc_st pass_acc;
    147  |
    148  | 	/* accounting */
    149  | 	memset(&pass_acc, 0, sizeof(acc_st));
    150  | 	pass_acc.addrpasses=1;
    151  | 	AC_commit( &qe->condat.rIP, &pass_acc, &acl_rip);
    152  |
    153  | 	/* set eIP to this IP */
    154  | 	qe->condat.eIP = qe->pIP;
    155  |       }
    156  |       else {
    157  | 	/* XXX shall we deny such user ? Now we can... */
    158  | 	ER_inf_va(FAC_PW, ASP_PWI_PASSUN,
    159  | 		  "unauthorised address passing by %s", hostaddress);
    160  |       }
    161  |     }
    162  |
    163  |
    164  |     /* start setting counters in the connection acc from here on
    165  |        decrement the credit counter (needed to prevent QI_execute from
    166  |        returning too many results */
    167  |
    168  |     /* check ACL. Get the proper acl record. Calculate credit */
    169  |     AC_check_acl( &(qe->condat.eIP), &acc_credit, &acl_eip);
    170  |     /* save the original credit, later check how much was used */
    171  |     copy_credit = acc_credit;
    172  |
    173  |     if( acl_eip.deny ) {
    174  |       permanent_ban = 1;
    175  |     }
    176  |
    177  |     if( qe->condat.rtc == 0 ) {
    178  |       print_hello_banner(qe);
    179  |
    180  |       if( permanent_ban ) {
    181  |         SK_cd_puts(&(qe->condat),
    182  | "% Sorry, access from your host has been permanently denied\n"
    183  | "% because of a repeated abusive behaviour.\n"
    184  | "% Please contact <ripe-dbm@ripe.net> for unblocking\n");
    185  |
    186  | 	ER_inf_va(FAC_PW, ASP_PWI_DENTRY,
    187  | 		  "connection from host %s DENIED", hostaddress);
    188  |
    189  |       }
    190  |       else {
    191  | 	switch( qc->query_type ) {
    192  | 	case QC_ERROR:
    193  | 	  SK_cd_puts(&(qe->condat), USAGE);
    194  | 	  break;
    195  | 	case QC_NOKEY:
    196  | 	  /* some operational stuff, like -k */
    197  | 	  break;
    198  |         case QC_EMPTY:
    199  |
    200  |           /* The user didn't specify a key, so
    201  |              - print moron banner
    202  |              - force disconnection of the user. */
    203  |           SK_cd_puts(&(qe->condat), "% No search key specified\n");
    204  |           qe->condat.rtc = SK_NOTEXT;
    205  |           break;
    206  |         case QC_HELP:
    207  |           SK_cd_puts(&(qe->condat), "% Nothing can help you anymore...:-)\n");
    208  |           break;
    209  |         case QC_TEMPLATE:
    210  |           if (qc->q >= 0) {
    211  |             SK_cd_puts(&(qe->condat), DF_get_server_query(qc->q));
    212  |           }
    213  |           if (qc->t >= 0) {
    214  |             SK_cd_puts(&(qe->condat), DF_get_class_template(qc->t));
    215  |           }
    216  |           if (qc->v >= 0) {
    217  |             SK_cd_puts(&(qe->condat), DF_get_class_template_v(qc->v));
    218  |           }
    219  |           break;
    220  |
    221  | 	case QC_FILTERED:
    222  | 	  SK_cd_puts(&(qe->condat), "% Note: this output has been filtered.\n% Only primary keys will be visible.\n% Contact information will not be shown\n\n");
    223  |
    224  | 	  /* FALLTROUGH */
    225  |         case QC_REAL:
    226  |           qis = QI_new(qc,qe);
    227  |
    228  | 	  /* stop as soon as further action considered meaningless */
    229  |           for( qitem = g_list_first(qe->sources_list);
    230  |                qitem != NULL && qe->condat.rtc == 0;
    231  |                qitem = g_list_next(qitem)) {
    232  |
    233  |             /* QI will decrement the credit counters */
    234  |             err = QI_execute(qitem->data, qis, qe, &acc_credit, &acl_eip );
    235  |
    236  | 	    if( !NOERR(err) ) {
    237  | 	      if( err == QI_CANTDB ) {
    238  | 		SK_cd_puts(&(qe->condat), "% WARNING: Failed to make connection to ");
    239  | 		SK_cd_puts(&(qe->condat), (char *)qitem->data);
    240  | 		SK_cd_puts(&(qe->condat), " database.\n\n");
    241  | 	      }
    242  |
    243  | 	      break; /* quit the loop after any error */
    244  | 	    }/* if */
    245  |
    246  | 	  }/* for */
    247  |
    248  | 	  /* end-of-result -> one extra line */
    249  | 	  SK_cd_puts(&(qe->condat), "\n");
    250  |
    251  | 	  QI_free(qis);
    252  | 	  copy_credit.queries ++;
    253  |
    254  | 	  if( acc_credit.denials != 0 ) {
    255  | 	    SK_cd_puts(&(qe->condat),
    256  |  "% You have reached the limit of returned contact information objects.\n"
    257  |  "% This connection will be terminated now.\n"
    258  |  "% This is a mechanism to prevent abusive use of contact data in the RIPE Database.\n"
    259  |  "% You will not be allowed to query for more CONTACT information for a while.\n"
    260  |  "% Continued attempts to return excessive amounts of contact\n"
    261  |  "% information will result in permanent denial of service.\n"
    262  |  "% Please do not try to use CONTACT information information in the\n"
    263  |  "% RIPE Database for non-operational purposes.\n"
    264  |  "% Refer to http://www.ripe.net/db/dbcopyright.html for more information.\n"
    265  | 		       );
    266  | 	  }
    267  |
    268  |           break;
    269  |         default: die;
    270  |         }
    271  | 	/* calc. the credit used, result  into copy_credit */
    272  | 	AC_acc_addup(&copy_credit, &acc_credit, ACC_MINUS);
    273  |
    274  | 	{
    275  | 	  char *qrystat = AC_credit_to_string(&copy_credit);
    276  | 	  float elapsed;
    277  | 	  char *qrytypestr =
    278  | 	    qc->query_type == QC_REAL ? "" : QC_get_qrytype(qc->query_type);
    279  |
    280  | 	  gettimeofday(&endtime, NULL);
    281  |
    282  | 	  elapsed = ( endtime.tv_sec - begintime.tv_sec ) +
    283  | 	    1e-6 * ( endtime.tv_usec - begintime.tv_usec ) ;
    284  |
    285  | 	  /* log the connection/query/#results/time/denial to file */
    286  | 	  ER_inf_va(FAC_PW, ASP_PWI_QRYLOG,
    287  | 		    "<%s> %s %.2fs [%s] --  %s",
    288  | 		    qrystat, qrytypestr,
    289  | 		    elapsed, hostaddress, input
    290  | 		    );
    291  | 	  wr_free(qrystat);
    292  | 	}
    293  |
    294  |       }/* if denied ... else */
    295  |
    296  |       QC_free(qc);
    297  |
    298  |       if( new_connection ) {
    299  | 	copy_credit.connections = 1;
    300  | 	new_connection = 0;
    301  |       }
    302  |
    303  |       if( copy_credit.denials != 0 ) {
    304  | 	acc_deny = 1;
    305  |       }
    306  |
    307  |       /* Commit the credit. This will deny if bonus limit hit */
    308  |       AC_commit(&(qe->condat.eIP), &copy_credit, &acl_eip);
    309  |
    310  |     } /* if still considered connected */
    311  |
    312  |   } /* do */
    313  |   while( qe->k && qe->condat.rtc == 0 && acc_deny == 0
    314  | 	 && CO_get_whois_suspended() == 0);
    315  |
    316  |   /* Free the hostaddress */
    317  |   wr_free(hostaddress);
    318  |
    319  |   SK_cd_close(&(qe->condat));
    320  |
    321  |   /* Free the query_environ */
    322  |   QC_environ_free(qe);
    323  |
    324  | } /* PW_interact() */