Adding upstream version 0.9.2.upstream/0.9.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/src/tpm_memory.c b/src/tpm_memory.c
new file mode 100644
index 0000000..ce78a3e
--- /dev/null
+++ b/src/tpm_memory.c
@@ -0,0 +1,130 @@
+/********************************************************************************/
+/*                                                                              */
+/*                           TPM Memory Allocation                              */
+/*                           Written by Ken Goldman                             */
+/*                     IBM Thomas J. Watson Research Center                     */
+/*            $Id: tpm_memory.c 4609 2011-08-26 19:27:38Z kgoldman $            */
+/*                                                                              */
+/* (c) Copyright IBM Corporation 2006, 2010.					*/
+/*										*/
+/* All rights reserved.								*/
+/* 										*/
+/* Redistribution and use in source and binary forms, with or without		*/
+/* modification, are permitted provided that the following conditions are	*/
+/* met:										*/
+/* 										*/
+/* Redistributions of source code must retain the above copyright notice,	*/
+/* this list of conditions and the following disclaimer.			*/
+/* 										*/
+/* Redistributions in binary form must reproduce the above copyright		*/
+/* notice, this list of conditions and the following disclaimer in the		*/
+/* documentation and/or other materials provided with the distribution.		*/
+/* 										*/
+/* Neither the names of the IBM Corporation nor the names of its		*/
+/* contributors may be used to endorse or promote products derived from		*/
+/* this software without specific prior written permission.			*/
+/* 										*/
+/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS		*/
+/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT		*/
+/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR	*/
+/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT		*/
+/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,	*/
+/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT		*/
+/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	*/
+/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	*/
+/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT		*/
+/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	*/
+/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.		*/
+/********************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "tpm_debug.h"
+#include "tpm_error.h"
+
+#include "tpm_memory.h"
+
+/* TPM_Malloc() is a general purpose wrapper around malloc()
+ */
+
+TPM_RESULT TPM_Malloc(unsigned char **buffer, uint32_t size)
+{
+    TPM_RESULT          rc = 0;
+    
+    /* assertion test.  The coding style requires that all allocated pointers are initialized to
+       NULL.  A non-NULL value indicates either a missing initialization or a pointer reuse (a
+       memory leak). */
+    if (rc == 0) {
+        if (*buffer != NULL) {
+            printf("TPM_Malloc: Error (fatal), *buffer %p should be NULL before malloc\n", *buffer);
+            rc = TPM_FAIL;
+        }
+    }
+    /* verify that the size is not "too large" */
+    if (rc == 0) {
+        if (size > TPM_ALLOC_MAX) {
+            printf("TPM_Malloc: Error, size %u greater than maximum allowed\n", size);
+            rc = TPM_SIZE;
+        }       
+    }
+    /* verify that the size is not 0, this would be implementation defined and should never occur */
+    if (rc == 0) {
+        if (size == 0) {
+            printf("TPM_Malloc: Error (fatal), size is zero\n");
+            rc = TPM_FAIL;
+        }       
+    }
+    if (rc == 0) {
+        *buffer = malloc(size);
+        if (*buffer == NULL) {
+            printf("TPM_Malloc: Error allocating %u bytes\n", size);
+            rc = TPM_SIZE;
+        }
+    }
+    return rc;
+}
+
+/* TPM_Realloc() is a general purpose wrapper around realloc()
+ */
+
+TPM_RESULT TPM_Realloc(unsigned char **buffer,
+                       uint32_t size)
+{
+    TPM_RESULT          rc = 0;
+    unsigned char       *tmpptr = NULL;
+    
+    /* verify that the size is not "too large" */
+    if (rc == 0) {
+        if (size > TPM_ALLOC_MAX) {
+            printf("TPM_Realloc: Error, size %u greater than maximum allowed\n", size);
+            rc = TPM_SIZE;
+        }       
+    }
+    if (rc == 0) {
+        tmpptr = realloc(*buffer, size);
+        if (tmpptr == NULL) {
+            printf("TPM_Realloc: Error reallocating %u bytes\n", size);
+            rc = TPM_SIZE;
+        }
+    }
+    if (rc == 0) {
+        *buffer = tmpptr;
+    }
+    return rc;
+}
+
+/* TPM_Free() is the companion to the TPM allocation functions.  It is not used internally.  The
+   intent is for use by an application that links directly to a TPM and wants to free memory
+   allocated by the TPM.
+
+   It avoids a potential problem if the application uses a different allocation library, perhaps one
+   that wraps the functions to detect overflows or memory leaks.
+*/
+
+void TPM_Free(unsigned char *buffer)
+{
+    free(buffer);
+    return;
+}
+