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: 1.3 $
   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                              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 "iproutines.h"
  33 #include "mysql_driver.h"
  34 #include "constants.h"
  35 
  36 #include "access_control.h"
  37 /* 
  38 > +---------------+---------------------+------+-----+---------+-------+
  39 > | Field         | Type                | Null | Key | Default | Extra |
  40 > +---------------+---------------------+------+-----+---------+-------+
  41 > | prefix        | int(10) unsigned    |      | PRI | 0       |       |
  42 > | prefix_length | tinyint(3) unsigned |      | PRI | 0       |       |
  43 > | source        | varchar(32)         |      | PRI |         |       |
  44 > | ripupdate     | tinyint(3)          |      |     | 0       |       |
  45 > | netupdate     | tinyint(3)          |      |     | 0       |       |
  46 > | mirror        | tinyint(3)          |      |     | 0       |       |
  47 > | comment       | longblob            | YES  |     | NULL    |       |
  48 > +---------------+---------------------+------+-----+---------+-------+
  49 */
  50 
  51 typedef struct {
  52   int ripupdate;
  53   int netupdate;
  54   int mirror;
  55 } aa_rights;
  56 
  57 void aa_parserow(SQ_result_set_t *result, aa_rights *rights)
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  58 {
  59   SQ_row_t *row;
  60   
  61   /* zero the rights - so if we don't get any results, we have a valid
  62    answer "no rights" */
  63 
  64   rights->ripupdate = 0;
  65   rights->netupdate = 0;
  66   rights->mirror    = 0;
  67 
  68   if ( (row = SQ_row_next(result)) != NULL ) {    
  69     /* read in the order of query */
  70     if( sscanf(SQ_get_column_string_nocopy(result, row, 0),
  71                "%u", &rights->ripupdate ) < 1 ) { die; }
  72     if( sscanf(SQ_get_column_string_nocopy(result, row, 1),
  73                "%u", &rights->netupdate ) < 1 ) { die; }
  74     if( sscanf(SQ_get_column_string_nocopy(result, row, 2),
  75                "%u", &rights->mirror )    < 1 ) { die; }
  76   }
  77 }
  78 
  79 
  80 
  81 void aa_compose_query(ip_addr_t *address, char *source, char *buf, unsigned len)
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  82 {
  83 snprintf(buf,len, "SELECT ripupdate, netupdate, mirror FROM aaa WHERE %lu "  
  84 " BETWEEN prefix AND (prefix+(1<<(32-prefix_length)))"
  85 " AND source = '%s' "
  86 " ORDER BY prefix_length DESC LIMIT 1" /* take the most specific entry */,
  87   IP_addr_b2v4_addr(address), source );
  88 }
  89 
  90 
  91 
  92 /* finds and fills in the struct */
  93 void
  94 aa_find(ip_addr_t *address, char *source, aa_rights *rights)
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  95 {
  96  SQ_result_set_t *result;
  97  SQ_connection_t *con=NULL;
  98  char buf[1024];
  99 
 100  /* get the query */
 101  aa_compose_query(address,source, buf, 1024);
 102  
 103  /* open the database */
 104 
 105  if( (con = AC_dbopen_admin()) == NULL ) {
 106    fprintf(stderr, "ERROR %d: %s\n", SQ_errno(con), SQ_error(con));
 107    die;
 108  }
 109  
 110  /* select the most specific entry */
 111  if( SQ_execute_query(con, buf, &result) == -1 ) {
 112    fprintf(stderr, "ERROR %d: %s\n", SQ_errno(con), SQ_error(con));
 113    die;
 114  }
 115  
 116  /* read in the rights from the resulting row */
 117  aa_parserow(result, rights);
 118  
 119  /* release everything */
 120  SQ_free_result(result);
 121  
 122  /* Close connection */
 123  SQ_close_connection(con);
 124 }
 125 
 126 
 127 int AA_can_networkupdate( ip_addr_t *address, char *source )
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 128 { 
 129   aa_rights myrights;
 130   aa_find(address, source, &myrights);
 131   return (myrights.netupdate != 0);
 132 }
 133 
 134 int AA_can_ripupdate( ip_addr_t *address, char *source )
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 135 { 
 136   aa_rights myrights;
 137   aa_find(address, source, &myrights);
 138   return (myrights.ripupdate != 0);
 139 }
 140 
 141 int AA_can_mirror( ip_addr_t *address, char *source )
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 142 { 
 143   aa_rights myrights;
 144   aa_find(address, source, &myrights);
 145   return (myrights.mirror != 0);
 146 }

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