modules/aa/aa.c

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FUNCTIONS

This source file includes following functions.
  1. aa_parserow
  2. aa_compose_query
  3. aa_find
  4. AA_can_networkupdate
  5. AA_can_ripupdate
  6. AA_can_mirror

   1 /***************************************
   2   $Revision: 1.6 $
   3 
   4   access authorisation (aa). aa.c - functions to check access rights
   5   for less frequent clients (ripupdate, networkupdate, mirror).
   6 
   7   Status: NOT REVUED, NOT TESTED, 
   8 
   9   Design and implementation by: Marek Bukowy
  10 
  11   ******************/ /******************
  12   Copyright (c) 1999,2000,2001,2002                         RIPE NCC
  13  
  14   All Rights Reserved
  15   
  16   Permission to use, copy, modify, and distribute this software and its
  17   documentation for any purpose and without fee is hereby granted,
  18   provided that the above copyright notice appear in all copies and that
  19   both that copyright notice and this permission notice appear in
  20   supporting documentation, and that the name of the author not be
  21   used in advertising or publicity pertaining to distribution of the
  22   software without specific, written prior permission.
  23   
  24   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  25   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
  26   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
  27   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  28   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  29   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  30   ***************************************/
  31 
  32 #include "rip.h"
  33 
  34 /* 
  35 > +---------------+---------------------+------+-----+---------+-------+
  36 > | Field         | Type                | Null | Key | Default | Extra |
  37 > +---------------+---------------------+------+-----+---------+-------+
  38 > | prefix        | int(10) unsigned    |      | PRI | 0       |       |
  39 > | prefix_length | tinyint(3) unsigned |      | PRI | 0       |       |
  40 > | source        | varchar(32)         |      | PRI |         |       |
  41 > | ripupdate     | tinyint(3)          |      |     | 0       |       |
  42 > | netupdate     | tinyint(3)          |      |     | 0       |       |
  43 > | mirror        | tinyint(3)          |      |     | 0       |       |
  44 > | comment       | longblob            | YES  |     | NULL    |       |
  45 > +---------------+---------------------+------+-----+---------+-------+
  46 */
  47 
  48 typedef struct {
  49   int ripupdate;
  50   int netupdate;
  51   int mirror;
  52 } aa_rights;
  53 
  54 void aa_parserow(SQ_result_set_t *result, aa_rights *rights)
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  55 {
  56   SQ_row_t *row;
  57   
  58   /* zero the rights - so if we don't get any results, we have a valid
  59    answer "no rights" */
  60 
  61   rights->ripupdate = 0;
  62   rights->netupdate = 0;
  63   rights->mirror    = 0;
  64 
  65   if ( (row = SQ_row_next(result)) != NULL ) {    
  66     /* read in the order of query */
  67     if( sscanf(SQ_get_column_string_nocopy(result, row, 0),
  68                "%u", &rights->ripupdate ) < 1 ) { die; }
  69     if( sscanf(SQ_get_column_string_nocopy(result, row, 1),
  70                "%u", &rights->netupdate ) < 1 ) { die; }
  71     if( sscanf(SQ_get_column_string_nocopy(result, row, 2),
  72                "%u", &rights->mirror )    < 1 ) { die; }
  73   }
  74 }
  75 
  76 
  77 
  78 void aa_compose_query(ip_addr_t *address, char *source, char *buf, unsigned len)
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  79 {
  80 snprintf(buf,len, "SELECT ripupdate, netupdate, mirror FROM aaa WHERE %u "  
  81 " BETWEEN prefix AND (prefix+(1<<(32-prefix_length)))"
  82 " AND source = '%s' "
  83 " ORDER BY prefix_length DESC LIMIT 1" /* take the most specific entry */,
  84   IP_addr_b2v4_addr(address), source );
  85 }
  86 
  87 
  88 
  89 /* finds and fills in the struct */
  90 void
  91 aa_find(ip_addr_t *address, char *source, aa_rights *rights)
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  92 {
  93  SQ_result_set_t *result;
  94  SQ_connection_t *con=NULL;
  95  char buf[1024];
  96 
  97  /* get the query */
  98  aa_compose_query(address,source, buf, 1024);
  99  
 100  /* open the database */
 101 
 102  if( (con = AC_dbopen_admin()) == NULL ) {
 103    fprintf(stderr, "ERROR %d: %s\n", SQ_errno(con), SQ_error(con));
 104    die;
 105  }
 106  
 107  /* select the most specific entry */
 108  if( SQ_execute_query(con, buf, &result) == -1 ) {
 109    fprintf(stderr, "ERROR %d: %s\n", SQ_errno(con), SQ_error(con));
 110    die;
 111  }
 112  
 113  /* read in the rights from the resulting row */
 114  aa_parserow(result, rights);
 115  
 116  /* release everything */
 117  SQ_free_result(result);
 118  
 119  /* Close connection */
 120  SQ_close_connection(con);
 121 }
 122 
 123 
 124 int AA_can_networkupdate( ip_addr_t *address, char *source )
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 125 { 
 126   aa_rights myrights;
 127   aa_find(address, source, &myrights);
 128   return (myrights.netupdate != 0);
 129 }
 130 
 131 int AA_can_ripupdate( ip_addr_t *address, char *source )
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 132 { 
 133   aa_rights myrights;
 134   aa_find(address, source, &myrights);
 135   return (myrights.ripupdate != 0);
 136 }
 137 
 138 int AA_can_mirror( ip_addr_t *address, char *source )
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 139 { 
 140   aa_rights myrights;
 141   aa_find(address, source, &myrights);
 142   return (myrights.mirror != 0);
 143 }

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