mirror of git://erdgeist.org/opentracker
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/* This software was written by Dirk Engling <erdgeist@erdgeist.org>
|
|
It is considered beerware. Prost. Skol. Cheers or whatever. */
|
|
|
|
/* System */
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
|
|
/* Libowfat */
|
|
#include "byte.h"
|
|
#include "scan.h"
|
|
|
|
/* Opentracker */
|
|
#include "ot_accesslist.h"
|
|
|
|
/* GLOBAL VARIABLES */
|
|
#ifdef WANT_ACCESS_CONTROL
|
|
static char *accesslist_filename = NULL;
|
|
static ot_vector accesslist;
|
|
|
|
static void accesslist_reset( void ) {
|
|
free( accesslist.data );
|
|
byte_zero( &accesslist, sizeof( accesslist ) );
|
|
}
|
|
|
|
static int accesslist_addentry( ot_hash *infohash ) {
|
|
int em;
|
|
void *insert = vector_find_or_insert( &accesslist, infohash, OT_HASH_COMPARE_SIZE, OT_HASH_COMPARE_SIZE, &em );
|
|
|
|
if( !insert )
|
|
return -1;
|
|
|
|
memmove( insert, infohash, OT_HASH_COMPARE_SIZE );
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Read initial access list */
|
|
static void accesslist_readfile( int foo ) {
|
|
FILE * accesslist_filehandle;
|
|
ot_hash infohash;
|
|
foo = foo;
|
|
|
|
accesslist_filehandle = fopen( accesslist_filename, "r" );
|
|
|
|
/* Free accesslist vector in trackerlogic.c*/
|
|
accesslist_reset();
|
|
|
|
if( accesslist_filehandle == NULL ) {
|
|
fprintf( stderr, "Warning: Can't open accesslist file: %s (but will try to create it later, if necessary and possible).", accesslist_filename );
|
|
return;
|
|
}
|
|
|
|
/* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*" */
|
|
while( fgets( static_inbuf, sizeof(static_inbuf), accesslist_filehandle ) ) {
|
|
int i;
|
|
for( i=0; i<20; ++i ) {
|
|
int eger = 16 * scan_fromhex( static_inbuf[ 2*i ] ) + scan_fromhex( static_inbuf[ 1 + 2*i ] );
|
|
if( eger < 0 )
|
|
continue;
|
|
infohash[i] = eger;
|
|
}
|
|
if( scan_fromhex( static_inbuf[ 40 ] ) >= 0 )
|
|
continue;
|
|
|
|
/* Append accesslist to accesslist vector */
|
|
accesslist_addentry( &infohash );
|
|
}
|
|
|
|
fclose( accesslist_filehandle );
|
|
}
|
|
|
|
int accesslist_hashisvalid( ot_hash *hash ) {
|
|
int exactmatch;
|
|
binary_search( hash, accesslist.data, accesslist.size, OT_HASH_COMPARE_SIZE, OT_HASH_COMPARE_SIZE, &exactmatch );
|
|
|
|
#ifdef WANT_BLACKLISTING
|
|
exactmatch = !exactmatch;
|
|
#endif
|
|
|
|
return exactmatch;
|
|
}
|
|
|
|
void accesslist_init( char *accesslist_filename_in ) {
|
|
byte_zero( &accesslist, sizeof( accesslist ) );
|
|
|
|
/* Passing "0" since read_blacklist_file also is SIGHUP handler */
|
|
if( accesslist_filename_in ) {
|
|
accesslist_filename = accesslist_filename_in;
|
|
accesslist_readfile( 0 );
|
|
signal( SIGHUP, accesslist_readfile );
|
|
}
|
|
}
|
|
|
|
#endif
|