Diff: wolfcrypt/src/memory.c

Revision:

4:1b0d80432c79

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfcrypt/src/memory.c	Thu Apr 28 00:57:21 2016 +0000
@@ -0,0 +1,193 @@
+/* memory.c
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#include <wolfssl/wolfcrypt/settings.h>
+
+/* check old macros @wc_fips */
+#if defined(USE_CYASSL_MEMORY) && !defined(USE_WOLFSSL_MEMORY)
+    #define USE_WOLFSSL_MEMORY
+#endif
+#if defined(CYASSL_MALLOC_CHECK) && !defined(WOLFSSL_MALLOC_CHECK)
+    #define WOLFSSL_MALLOC_CHECK
+#endif
+
+#ifdef USE_WOLFSSL_MEMORY
+
+#include <wolfssl/wolfcrypt/memory.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+
+#ifdef WOLFSSL_MALLOC_CHECK
+    #include <stdio.h>
+#endif
+
+/* Set these to default values initially. */
+static wolfSSL_Malloc_cb  malloc_function = 0;
+static wolfSSL_Free_cb    free_function = 0;
+static wolfSSL_Realloc_cb realloc_function = 0;
+
+int wolfSSL_SetAllocators(wolfSSL_Malloc_cb  mf,
+                          wolfSSL_Free_cb    ff,
+                          wolfSSL_Realloc_cb rf)
+{
+    int res = 0;
+
+    if (mf)
+        malloc_function = mf;
+    else
+        res = BAD_FUNC_ARG;
+
+    if (ff)
+        free_function = ff;
+    else
+        res = BAD_FUNC_ARG;
+
+    if (rf)
+        realloc_function = rf;
+    else
+        res = BAD_FUNC_ARG;
+
+    return res;
+}
+
+
+void* wolfSSL_Malloc(size_t size)
+{
+    void* res = 0;
+
+    if (malloc_function)
+        res = malloc_function(size);
+    else
+        res = malloc(size);
+
+    #ifdef WOLFSSL_MALLOC_CHECK
+        if (res == NULL)
+            puts("wolfSSL_malloc failed");
+    #endif
+                
+    return res;
+}
+
+void wolfSSL_Free(void *ptr)
+{
+    if (free_function)
+        free_function(ptr);
+    else
+        free(ptr);
+}
+
+void* wolfSSL_Realloc(void *ptr, size_t size)
+{
+    void* res = 0;
+
+    if (realloc_function)
+        res = realloc_function(ptr, size);
+    else
+        res = realloc(ptr, size);
+
+    return res;
+}
+
+#endif /* USE_WOLFSSL_MEMORY */
+
+
+#ifdef HAVE_IO_POOL
+
+/* Example for user io pool, shared build may need definitions in lib proper */
+
+#include <wolfssl/wolfcrypt/types.h>
+#include <stdlib.h>
+
+#ifndef HAVE_THREAD_LS
+    #error "Oops, simple I/O pool example needs thread local storage"
+#endif
+
+
+/* allow simple per thread in and out pools */
+/* use 17k size sense max record size is 16k plus overhead */
+static THREAD_LS_T byte pool_in[17*1024];
+static THREAD_LS_T byte pool_out[17*1024];
+
+
+void* XMALLOC(size_t n, void* heap, int type)
+{
+    (void)heap;
+
+    if (type == DYNAMIC_TYPE_IN_BUFFER) {
+        if (n < sizeof(pool_in))
+            return pool_in;
+        else
+            return NULL;
+    }
+
+    if (type == DYNAMIC_TYPE_OUT_BUFFER) {
+        if (n < sizeof(pool_out))
+            return pool_out;
+        else
+            return NULL;
+    }
+
+    return malloc(n);
+}
+
+void* XREALLOC(void *p, size_t n, void* heap, int type)
+{
+    (void)heap;
+
+    if (type == DYNAMIC_TYPE_IN_BUFFER) {
+        if (n < sizeof(pool_in))
+            return pool_in;
+        else
+            return NULL;
+    }
+
+    if (type == DYNAMIC_TYPE_OUT_BUFFER) {
+        if (n < sizeof(pool_out))
+            return pool_out;
+        else
+            return NULL;
+    }
+
+    return realloc(p, n);
+}
+
+
+/* unit api calls, let's make sure visible with WOLFSSL_API */
+WOLFSSL_API void XFREE(void *p, void* heap, int type)
+{
+    (void)heap;
+
+    if (type == DYNAMIC_TYPE_IN_BUFFER)
+        return;  /* do nothing, static pool */
+
+    if (type == DYNAMIC_TYPE_OUT_BUFFER)
+        return;  /* do nothing, static pool */
+
+    free(p);
+}
+
+#endif /* HAVE_IO_POOL */
+
+