Diff: src/memory.c

Revision:

0:c4152c628df5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/memory.c	Mon Nov 25 14:24:05 2019 +0000
@@ -0,0 +1,109 @@
+/* memory.c 
+ *
+ * Copyright (C) 2014-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSH.
+ *
+ * wolfSSH 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSH 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 wolfSSH.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/*
+ * The memory module contains the interface to the custom memory handling hooks.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#include <wolfssh/settings.h>
+
+
+#ifdef USE_WOLFSSH_MEMORY
+
+#include <wolfssh/memory.h>
+#include <wolfssh/error.h>
+
+/* Set these to default values initially. */
+static wolfSSH_Malloc_cb  malloc_function  = NULL;
+static wolfSSH_Free_cb    free_function    = NULL;
+static wolfSSH_Realloc_cb realloc_function = NULL;
+
+
+/* set wolfSSH allocator callbacks, 0 on success */
+int wolfSSH_SetAllocators(wolfSSH_Malloc_cb  mf,
+                           wolfSSH_Free_cb    ff,
+                           wolfSSH_Realloc_cb rf)
+{
+    int res = 0;
+
+    if (mf)
+        malloc_function = mf;
+    else
+        res = WS_BAD_ARGUMENT;
+
+    if (ff)
+        free_function = ff;
+    else
+        res = WS_BAD_ARGUMENT;
+
+    if (rf)
+        realloc_function = rf;
+    else
+        res = WS_BAD_ARGUMENT;
+
+    return res;
+}
+
+
+/* our malloc handler */
+void* wolfSSH_Malloc(size_t size)
+{
+    void* res = 0;
+
+    if (malloc_function)
+        res = malloc_function(size);
+    else
+        res = malloc(size);
+
+    return res;
+}
+
+
+/* our free handler */
+void wolfSSH_Free(void *ptr)
+{
+    if (free_function)
+        free_function(ptr);
+    else
+        free(ptr);
+}
+
+
+/* our realloc handler */
+void* wolfSSH_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_WOLFSSH_MEMORY */
+