[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/buffer/buffer.c b/ap/lib/libssl/openssl-1.1.1o/crypto/buffer/buffer.c
new file mode 100644
index 0000000..72258ab
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/buffer/buffer.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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 <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/buffer.h>
+
+/*
+ * LIMIT_BEFORE_EXPANSION is the maximum n such that (n+3)/3*4 < 2**31. That
+ * function is applied in several functions in this file and this limit
+ * ensures that the result fits in an int.
+ */
+#define LIMIT_BEFORE_EXPANSION 0x5ffffffc
+
+BUF_MEM *BUF_MEM_new_ex(unsigned long flags)
+{
+ BUF_MEM *ret;
+
+ ret = BUF_MEM_new();
+ if (ret != NULL)
+ ret->flags = flags;
+ return ret;
+}
+
+BUF_MEM *BUF_MEM_new(void)
+{
+ BUF_MEM *ret;
+
+ ret = OPENSSL_zalloc(sizeof(*ret));
+ if (ret == NULL) {
+ BUFerr(BUF_F_BUF_MEM_NEW, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ return ret;
+}
+
+void BUF_MEM_free(BUF_MEM *a)
+{
+ if (a == NULL)
+ return;
+ if (a->data != NULL) {
+ if (a->flags & BUF_MEM_FLAG_SECURE)
+ OPENSSL_secure_clear_free(a->data, a->max);
+ else
+ OPENSSL_clear_free(a->data, a->max);
+ }
+ OPENSSL_free(a);
+}
+
+/* Allocate a block of secure memory; copy over old data if there
+ * was any, and then free it. */
+static char *sec_alloc_realloc(BUF_MEM *str, size_t len)
+{
+ char *ret;
+
+ ret = OPENSSL_secure_malloc(len);
+ if (str->data != NULL) {
+ if (ret != NULL) {
+ memcpy(ret, str->data, str->length);
+ OPENSSL_secure_clear_free(str->data, str->length);
+ str->data = NULL;
+ }
+ }
+ return ret;
+}
+
+size_t BUF_MEM_grow(BUF_MEM *str, size_t len)
+{
+ char *ret;
+ size_t n;
+
+ if (str->length >= len) {
+ str->length = len;
+ return len;
+ }
+ if (str->max >= len) {
+ if (str->data != NULL)
+ memset(&str->data[str->length], 0, len - str->length);
+ str->length = len;
+ return len;
+ }
+ /* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
+ if (len > LIMIT_BEFORE_EXPANSION) {
+ BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ n = (len + 3) / 3 * 4;
+ if ((str->flags & BUF_MEM_FLAG_SECURE))
+ ret = sec_alloc_realloc(str, n);
+ else
+ ret = OPENSSL_realloc(str->data, n);
+ if (ret == NULL) {
+ BUFerr(BUF_F_BUF_MEM_GROW, ERR_R_MALLOC_FAILURE);
+ len = 0;
+ } else {
+ str->data = ret;
+ str->max = n;
+ memset(&str->data[str->length], 0, len - str->length);
+ str->length = len;
+ }
+ return len;
+}
+
+size_t BUF_MEM_grow_clean(BUF_MEM *str, size_t len)
+{
+ char *ret;
+ size_t n;
+
+ if (str->length >= len) {
+ if (str->data != NULL)
+ memset(&str->data[len], 0, str->length - len);
+ str->length = len;
+ return len;
+ }
+ if (str->max >= len) {
+ memset(&str->data[str->length], 0, len - str->length);
+ str->length = len;
+ return len;
+ }
+ /* This limit is sufficient to ensure (len+3)/3*4 < 2**31 */
+ if (len > LIMIT_BEFORE_EXPANSION) {
+ BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ n = (len + 3) / 3 * 4;
+ if ((str->flags & BUF_MEM_FLAG_SECURE))
+ ret = sec_alloc_realloc(str, n);
+ else
+ ret = OPENSSL_clear_realloc(str->data, str->max, n);
+ if (ret == NULL) {
+ BUFerr(BUF_F_BUF_MEM_GROW_CLEAN, ERR_R_MALLOC_FAILURE);
+ len = 0;
+ } else {
+ str->data = ret;
+ str->max = n;
+ memset(&str->data[str->length], 0, len - str->length);
+ str->length = len;
+ }
+ return len;
+}
+
+void BUF_reverse(unsigned char *out, const unsigned char *in, size_t size)
+{
+ size_t i;
+ if (in) {
+ out += size - 1;
+ for (i = 0; i < size; i++)
+ *out-- = *in++;
+ } else {
+ unsigned char *q;
+ char c;
+ q = out + size - 1;
+ for (i = 0; i < size / 2; i++) {
+ c = *q;
+ *q-- = *out;
+ *out++ = c;
+ }
+ }
+}