1 files changed, 196 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/mem.c b/openssl-1.1.0h/crypto/mem.c
new file mode 100644
index 0000000..72b04c8
--- /dev/null
+++ b/openssl-1.1.0h/crypto/mem.c
@@ -0,0 +1,196 @@
+/*
+ * 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 <stdlib.h>
+#include <limits.h>
+#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
+
+/*
+ * the following pointers may be changed as long as 'allow_customize' is set
+ */
+static int allow_customize = 1;
+
+static void *(*malloc_impl)(size_t, const char *, int)
+    = CRYPTO_malloc;
+static void *(*realloc_impl)(void *, size_t, const char *, int)
+    = CRYPTO_realloc;
+static void (*free_impl)(void *, const char *, int)
+    = CRYPTO_free;
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+static int call_malloc_debug = 1;
+#else
+static int call_malloc_debug = 0;
+#endif
+
+int CRYPTO_set_mem_functions(
+        void *(*m)(size_t, const char *, int),
+        void *(*r)(void *, size_t, const char *, int),
+        void (*f)(void *, const char *, int))
+{
+    if (!allow_customize)
+        return 0;
+    if (m)
+        malloc_impl = m;
+    if (r)
+        realloc_impl = r;
+    if (f)
+        free_impl = f;
+    return 1;
+}
+
+int CRYPTO_set_mem_debug(int flag)
+{
+    if (!allow_customize)
+        return 0;
+    call_malloc_debug = flag;
+    return 1;
+}
+
+void CRYPTO_get_mem_functions(
+        void *(**m)(size_t, const char *, int),
+        void *(**r)(void *, size_t, const char *, int),
+        void (**f)(void *, const char *, int))
+{
+    if (m != NULL)
+        *m = malloc_impl;
+    if (r != NULL)
+        *r = realloc_impl;
+    if (f != NULL)
+        *f = free_impl;
+}
+
+void *CRYPTO_malloc(size_t num, const char *file, int line)
+{
+    void *ret = NULL;
+
+    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
+        return malloc_impl(num, file, line);
+
+    if (num == 0)
+        return NULL;
+
+    if (allow_customize) {
+        /*
+         * Disallow customization after the first allocation. We only set this
+         * if necessary to avoid a store to the same cache line on every
+         * allocation.
+         */
+        allow_customize = 0;
+    }
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+    if (call_malloc_debug) {
+        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);
+        ret = malloc(num);
+        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);
+    } else {
+        ret = malloc(num);
+    }
+#else
+    osslargused(file); osslargused(line);
+    ret = malloc(num);
+#endif
+
+    return ret;
+}
+
+void *CRYPTO_zalloc(size_t num, const char *file, int line)
+{
+    void *ret = CRYPTO_malloc(num, file, line);
+
+    if (ret != NULL)
+        memset(ret, 0, num);
+    return ret;
+}
+
+void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)
+{
+    if (realloc_impl != NULL && realloc_impl != &CRYPTO_realloc)
+        return realloc_impl(str, num, file, line);
+
+    if (str == NULL)
+        return CRYPTO_malloc(num, file, line);
+
+    if (num == 0) {
+        CRYPTO_free(str, file, line);
+        return NULL;
+    }
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+    if (call_malloc_debug) {
+        void *ret;
+        CRYPTO_mem_debug_realloc(str, NULL, num, 0, file, line);
+        ret = realloc(str, num);
+        CRYPTO_mem_debug_realloc(str, ret, num, 1, file, line);
+        return ret;
+    }
+#else
+    osslargused(file); osslargused(line);
+#endif
+    return realloc(str, num);
+
+}
+
+void *CRYPTO_clear_realloc(void *str, size_t old_len, size_t num,
+                           const char *file, int line)
+{
+    void *ret = NULL;
+
+    if (str == NULL)
+        return CRYPTO_malloc(num, file, line);
+
+    if (num == 0) {
+        CRYPTO_clear_free(str, old_len, file, line);
+        return NULL;
+    }
+
+    /* Can't shrink the buffer since memcpy below copies |old_len| bytes. */
+    if (num < old_len) {
+        OPENSSL_cleanse((char*)str + num, old_len - num);
+        return str;
+    }
+
+    ret = CRYPTO_malloc(num, file, line);
+    if (ret != NULL) {
+        memcpy(ret, str, old_len);
+        CRYPTO_clear_free(str, old_len, file, line);
+    }
+    return ret;
+}
+
+void CRYPTO_free(void *str, const char *file, int line)
+{
+    if (free_impl != NULL && free_impl != &CRYPTO_free) {
+        free_impl(str, file, line);
+        return;
+    }
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+    if (call_malloc_debug) {
+        CRYPTO_mem_debug_free(str, 0, file, line);
+        free(str);
+        CRYPTO_mem_debug_free(str, 1, file, line);
+    } else {
+        free(str);
+    }
+#else
+    free(str);
+#endif
+}
+
+void CRYPTO_clear_free(void *str, size_t num, const char *file, int line)
+{
+    if (str == NULL)
+        return;
+    if (num)
+        OPENSSL_cleanse(str, num);
+    CRYPTO_free(str, file, line);
+}