Remove unused dtls1_bitmap.c

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19088)

diff --git a/ssl/record/dtls1_bitmap.c b/ssl/record/dtls1_bitmap.c
deleted file mode 100644 (file)
index e94ce91..0000000
--- a/ssl/record/dtls1_bitmap.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright 2005-2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (the "License").  You may not use
- * this file except in compliance with the License.  You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include "../ssl_local.h"
-#include "record_local.h"
-
-/* mod 128 saturating subtract of two 64-bit values in big-endian order */
-static int satsub64be(const unsigned char *v1, const unsigned char *v2)
-{
-    int64_t ret;
-    uint64_t l1, l2;
-
-    n2l8(v1, l1);
-    n2l8(v2, l2);
-
-    ret = l1 - l2;
-
-    /* We do not permit wrap-around */
-    if (l1 > l2 && ret < 0)
-        return 128;
-    else if (l2 > l1 && ret > 0)
-        return -128;
-
-    if (ret > 128)
-        return 128;
-    else if (ret < -128)
-        return -128;
-    else
-        return (int)ret;
-}
-
-int dtls1_record_replay_check(SSL_CONNECTION *s, DTLS1_BITMAP *bitmap)
-{
-    int cmp;
-    unsigned int shift;
-    const unsigned char *seq = s->rlayer.read_sequence;
-
-    cmp = satsub64be(seq, bitmap->max_seq_num);
-    if (cmp > 0) {
-        SSL3_RECORD_set_seq_num(RECORD_LAYER_get_rrec(&s->rlayer), seq);
-        return 1;               /* this record in new */
-    }
-    shift = -cmp;
-    if (shift >= sizeof(bitmap->map) * 8)
-        return 0;               /* stale, outside the window */
-    else if (bitmap->map & (1UL << shift))
-        return 0;               /* record previously received */
-
-    SSL3_RECORD_set_seq_num(RECORD_LAYER_get_rrec(&s->rlayer), seq);
-    return 1;
-}
-
-void dtls1_record_bitmap_update(SSL_CONNECTION *s, DTLS1_BITMAP *bitmap)
-{
-    int cmp;
-    unsigned int shift;
-    const unsigned char *seq = RECORD_LAYER_get_read_sequence(&s->rlayer);
-
-    cmp = satsub64be(seq, bitmap->max_seq_num);
-    if (cmp > 0) {
-        shift = cmp;
-        if (shift < sizeof(bitmap->map) * 8)
-            bitmap->map <<= shift, bitmap->map |= 1UL;
-        else
-            bitmap->map = 1UL;
-        memcpy(bitmap->max_seq_num, seq, SEQ_NUM_SIZE);
-    } else {
-        shift = -cmp;
-        if (shift < sizeof(bitmap->map) * 8)
-            bitmap->map |= 1UL << shift;
-    }
-}