[Redbutton-devel] SF.net SVN: redbutton: [377] redbutton-author/trunk

[<ski...@us...>]

Revision: 377
          http://redbutton.svn.sourceforge.net/redbutton/?rev=377&view=rev
Author:   skilvington
Date:     2007-09-13 04:45:48 -0700 (Thu, 13 Sep 2007)

Log Message:
-----------
we will need to store the ASN1 tag class after all

Modified Paths:
--------------
    redbutton-author/trunk/asn1tag.h
    redbutton-author/trunk/parser.c.header
    redbutton-author/trunk/parser.h.header

Modified: redbutton-author/trunk/asn1tag.h
===================================================================
--- redbutton-author/trunk/asn1tag.h	2007-09-12 13:17:20 UTC (rev 376)
+++ redbutton-author/trunk/asn1tag.h	2007-09-13 11:45:48 UTC (rev 377)
@@ -5,6 +5,12 @@
 #ifndef __ASN1TAG_H__
 #define __ASN1TAG_H__
 
+/* tag classes */
+#define ASN1CLASS_UNIVERSAL	0x00
+#define ASN1CLASS_APPLICATION	0x40
+#define ASN1CLASS_CONTEXT	0x80
+#define ASN1CLASS_PRIVATE	0xc0
+
 /*
  * a synthetic object created as a result of the grammar definition
  * eg TextBody etc

Modified: redbutton-author/trunk/parser.c.header
===================================================================
--- redbutton-author/trunk/parser.c.header	2007-09-12 13:17:20 UTC (rev 376)
+++ redbutton-author/trunk/parser.c.header	2007-09-13 11:45:48 UTC (rev 377)
@@ -2,7 +2,12 @@
 
 #include "parser.h"
 #include "tokens.h"
+#include "utils.h"
 
+/*
+ * lexer functions we need to provide
+ */
+
 int yylineno = 1;
 
 void
@@ -18,6 +23,39 @@
 }
 
 /*
+ * parser helper functions
+ */
+
+struct node *
+add_child(struct node *parent, unsigned int asn1tag, unsigned int asn1class)
+{
+	struct node *child = safe_malloc(sizeof(struct node));
+
+	child->asn1tag = asn1tag;
+	child->asn1class = asn1class;
+	child->length = 0;
+	child->value = NULL;
+	child->children = NULL;
+	child->siblings = NULL;
+
+	/* is it the first */
+	if(parent->children == NULL)
+	{
+		parent->children = child;
+	}
+	else
+	{
+		/* add it to the end of the siblings list */
+		struct node *sib = parent->children;
+		while(sib->siblings != NULL)
+			sib = sib->siblings;
+		sib->siblings = child;
+	}
+
+	return child;
+}
+
+/*
  * parser functions for the predefined types
  */
 

Modified: redbutton-author/trunk/parser.h.header
===================================================================
--- redbutton-author/trunk/parser.h.header	2007-09-12 13:17:20 UTC (rev 376)
+++ redbutton-author/trunk/parser.h.header	2007-09-13 11:45:48 UTC (rev 377)
@@ -11,6 +11,7 @@
 {
 	/* DER type */
 	unsigned int asn1tag;	/* ASN1 tag number */
+	unsigned int asn1class;	/* only UNIVERSAL or CONTEXT */
 	/* DER value */
 	unsigned int length;	/* length of the value data */
 	unsigned char *value;	/* DER encoded value */
@@ -19,9 +20,13 @@
 	struct node *siblings;	/* linked list of children */
 };
 
+/* add a child to a node */
+struct node *add_child(struct node *, unsigned int, unsigned int);
+
 /* lexer token type */
 typedef int token_t;
 
+/* lexer functions */
 void set_input_file(char *);
 
 token_t peek_token(void);


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