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[iptables.git] / trunk / src / hash.c

diff --git a/trunk/src/hash.c b/trunk/src/hash.c
deleted file mode 100644 (file)
index 15a62ed..0000000
--- a/trunk/src/hash.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
-       Copyright (C) Slava Astashonok <sla@0n.ru>
-
-       This program is free software; you can redistribute it and/or
-       modify it under the terms of the GNU General Public License.
-
-       $Id: hash.c,v 1.3.2.2.2.1 2005/01/29 19:30:41 sla Exp $
-*/
-
-#include <common.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <time.h>
-
-#include <hash.h>
-
-
-#ifdef HASH_TYPE_CRC
-static uint16_t crc16_poly;
-static uint8_t shuffle_table[256];
-static uint16_t crc16_table[256];
-
-uint16_t crc16(uint16_t crc, uint8_t val)
-{
-       int i;
-
-       crc ^= val << 8;
-       for (i = 8; i--; )
-               crc = crc & 0x8000 ? (crc << 1) ^ crc16_poly : crc << 1;
-       return crc;
-}
-#endif
-
-hash_t hash(void *p, int size)
-{
-       /*
-       ?FIXME?
-       Check for valid size (> 0)
-       */
-
-       hash_t hash = 0;
-
-#if defined HASH_TYPE_XOR && HASH_BITS == 16
-       if (size & 1) hash = *((uint8_t *) p++);
-       size >>= 1;
-#endif
-
-       for (;size--;) {
-#ifdef HASH_TYPE_XOR
-               hash ^= *((hash_t *) p++);
-# if HASH_BITS == 16
-               p++;
-# endif
-#endif
-#ifdef HASH_TYPE_CRC
-               hash = crc16_table[shuffle_table[*((uint8_t *) p++)] \
-                       ^ (hash >> 8)] ^ (hash << 8);
-#endif
-       }
-       return hash;
-}
-
-void hash_init()
-{
-
-#ifdef HASH_TYPE_CRC
-       int rnd, i, j, m;
-       FILE *rnddev;
-
-       if ((rnddev = fopen(RNDDEV, "r"))) {
-               fcntl(fileno(rnddev), F_SETFL, \
-                       fcntl(fileno(rnddev), F_GETFL) | O_NONBLOCK);
-               fread(&rnd, sizeof(rnd), 1, rnddev);
-               fclose(rnddev);
-       }
-       srand(time(NULL) ^ getpid() ^ rnd);
-       crc16_poly = rand() | 1;
-
-       for (i = 0; i < 256; i++) {
-           crc16_table[i] = crc16(0, i);
-           shuffle_table[i] = i;
-       }
-
-       for (i = 0; i < 256; i++) {
-           j = (int) (256.0 * rand() / (RAND_MAX + 1.0));
-           m = shuffle_table[i];
-           shuffle_table[i] = shuffle_table[j];
-           shuffle_table[j] = m;
-       }
-#endif
-}