Initial commit of files

src/libasn1/uper_stream.c

@@ -0,0 +1,88 @@
+/*****************************************************************************
+ * Copyright (C) 2004-2021
+ * ProbeStar Technical Systems, LLC
+ * All Rights Reserved.  Proprietary and Confidential.
+ *============================================================================
+*****************************************************************************/
+
+/*****************************************************************************
+ * includes
+*****************************************************************************/
+
+#include <stdlib.h>
+
+#include "embtypes.h"
+#include "asn1uper.h"
+
+/*****************************************************************************
+ * defines
+*****************************************************************************/
+
+/*****************************************************************************
+ * macros
+*****************************************************************************/
+
+/*****************************************************************************
+ * structs & typedefs
+*****************************************************************************/
+
+/*****************************************************************************
+ * global constants
+*****************************************************************************/
+
+/*****************************************************************************
+ * global variables
+*****************************************************************************/
+
+/*****************************************************************************
+ * static constants
+*****************************************************************************/
+
+/*****************************************************************************
+ * static variables
+*****************************************************************************/
+
+/*****************************************************************************
+ * static prototypes
+*****************************************************************************/
+
+/*****************************************************************************
+ * C functions
+*****************************************************************************/
+
+void uper_init_stream(UPER_Stream *strm, uint8_t *ptr, uint max)
+{
+  if (strm && ptr && max) {
+    strm->buf = ptr;
+    strm->ptr = ptr;
+    strm->align = ASN1_UPER_ALIGNED;
+    strm->bit = 0;
+    strm->max = max;
+    strm->consumed = 0;
+    strm->error = 0;
+  }
+}
+
+UPER_Stream *uper_alloc_stream(uint8_t *ptr, uint max)
+{
+  UPER_Stream *uper = (UPER_Stream*)calloc(1, sizeof(UPER_Stream));
+  
+  if (uper) {
+    if (!ptr && max) {
+      ptr = (uint8_t*)calloc(max/8+1,1);
+      uper->alloc = 1;
+    }
+    uper_init_stream(uper, ptr, max);
+  }
+  
+  return uper;
+}
+
+void uper_free_stream(UPER_Stream *uper)
+{
+  if (uper) {
+    if (uper->buf && uper->alloc)
+      free(uper->buf);
+    free(uper);
+  }
+}