Update ASN1 printing code. Highly experimental, not working properly (neither

did the old code) and not compiled in yet...

crypto/asn1/asn1_locl.h

+/* asn1t.h */
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+ * project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. 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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+/* Internal ASN1 structures and functions: not for application use */
+
+/* ASN1 print context structure */
+
+struct asn1_pctx_st
+	{
+	unsigned long flags;
+	unsigned long nm_flags;
+	unsigned long cert_flags;
+	unsigned long oid_flags;
+	unsigned long str_flags;
+	} /* ASN1_PCTX */;

crypto/asn1/tasn_prn.c

@@ -3,7 +3,7 @@
  * project 2000.
  */
 /* ====================================================================
- * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 2000,2005 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -59,140 +59,452 @@
 
 #include <stddef.h>
 #include <openssl/asn1.h>
+#include <openssl/asn1t.h>
 #include <openssl/objects.h>
 #include <openssl/buffer.h>
 #include <openssl/err.h>
-#include <openssl/nasn.h>
+#include <openssl/x509v3.h>
+#include "asn1_locl.h"
 
-/* Print routines. Print out a whole structure from a template.
+#define ASN1_PCTX_FLAGS_SHOW_ABSENT	0x1
+#define ASN1_PCTX_FLAGS_SHOW_SEQUENCE	0x2
+#define ASN1_PCTX_FLAGS_SHOW_TYPE	0x4
+#define ASN1_PCTX_FLAGS_NO_FIELD_NAME	0x8
+#define ASN1_PCTX_FLAGS_NO_STRUCT_NAME	0x10
+
+/* Print routines.
  */
 
-static int asn1_item_print_nm(BIO *out, void *fld, int indent, const ASN1_ITEM *it, const char *name);
+/* ASN1_PCTX routines */
 
-int ASN1_item_print(BIO *out, void *fld, int indent, const ASN1_ITEM *it)
-{
-	return asn1_item_print_nm(out, fld, indent, it, it->sname);
-}
+ASN1_PCTX default_pctx = 
+	{
+	ASN1_PCTX_FLAGS_SHOW_ABSENT,	/* flags */
+	0,	/* nm_flags */
+	0,	/* cert_flags */
+	0,	/* oid_flags */
+	0	/* str_flags */
+	};
+	
 
-static int asn1_item_print_nm(BIO *out, void *fld, int indent, const ASN1_ITEM *it, const char *name)
-{
-	ASN1_STRING *str;
+ASN1_PCTX *ASN1_PCTX_new(void)
+	{
+	ASN1_PCTX *ret;
+	ret = OPENSSL_malloc(sizeof(ASN1_PCTX));
+	if (ret == NULL)
+		{
+		ASN1err(ASN1_F_ASN1_PCTX_NEW, ERR_R_MALLOC_FAILURE);
+		return NULL;
+		}
+	ret->flags = 0;
+	ret->nm_flags = 0;
+	ret->cert_flags = 0;
+	ret->oid_flags = 0;
+	ret->str_flags = 0;
+	return ret;
+	}
+
+void ASN1_PCTX_free(ASN1_PCTX *p)
+	{
+	OPENSSL_free(p);
+	}
+
+unsigned long ASN1_PCTX_get_flags(ASN1_PCTX *p)
+	{
+	return p->flags;
+	}
+
+void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags)
+	{
+	p->flags = flags;
+	}
+
+unsigned long ASN1_PCTX_get_nm_flags(ASN1_PCTX *p)
+	{
+	return p->nm_flags;
+	}
+
+void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags)
+	{
+	p->nm_flags = flags;
+	}
+
+unsigned long ASN1_PCTX_get_cert_flags(ASN1_PCTX *p)
+	{
+	return p->cert_flags;
+	}
+
+void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags)
+	{
+	p->cert_flags = flags;
+	}
+
+unsigned long ASN1_PCTX_get_oid_flags(ASN1_PCTX *p)
+	{
+	return p->oid_flags;
+	}
+
+void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags)
+	{
+	p->oid_flags = flags;
+	}
+
+unsigned long ASN1_PCTX_get_str_flags(ASN1_PCTX *p)
+	{
+	return p->str_flags;
+	}
+
+void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags)
+	{
+	p->str_flags = flags;
+	}
+
+/* Main print routines */
+
+static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
+				const ASN1_ITEM *it, const ASN1_PCTX *pctx);
+int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
+				const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx);
+static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
+				const ASN1_ITEM *it, int indent,
+				const ASN1_PCTX *pctx);
+
+int ASN1_item_print(BIO *out, ASN1_VALUE *ifld, int indent,
+				const ASN1_ITEM *it, const ASN1_PCTX *pctx)
+	{
+	if (pctx == NULL)
+		pctx = &default_pctx;
+	return asn1_item_print_ctx(out, &ifld, indent, it, pctx);
+	}
+
+static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
+				const ASN1_ITEM *it, const ASN1_PCTX *pctx)
+	{
 	const ASN1_TEMPLATE *tt;
-	void *tmpfld;
+	const ASN1_EXTERN_FUNCS *ef;
+	ASN1_VALUE **tmpfld;
 	int i;
-	if(!fld) {
-		BIO_printf(out, "%*s%s ABSENT\n", indent, "", name);
+	if (BIO_printf(out, "%s:", it->sname) <= 0)
+		return 0;
+	if(*fld == NULL)
+		{
+		if (!(pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT))
+			{
+			if (BIO_puts(out, "\n") <= 0)
+				return 0;
+			}
+		else
+			{
+			if (BIO_puts(out, "<ABSENT>\n") <= 0)
+				return 0;
+			}
 		return 1;
-	}
-	switch(it->itype) {
+		}
 
+	switch(it->itype)
+		{
 		case ASN1_ITYPE_PRIMITIVE:
 		if(it->templates)
-			return ASN1_template_print(out, fld, indent, it->templates);
-		return asn1_primitive_print(out, fld, it->utype, indent, name);
-		break;
-
+			{
+			if (!asn1_template_print_ctx(out, fld, indent,
+							it->templates, pctx))
+				return 0;
+			}
+		/* fall thru */
 		case ASN1_ITYPE_MSTRING:
-		str = fld;
-		return asn1_primitive_print(out, fld, str->type, indent, name);
+		if (!asn1_primitive_print(out, fld, it, indent, pctx))
+			return 0;
+		break;
 
 		case ASN1_ITYPE_EXTERN:
-		BIO_printf(out, "%*s%s:EXTERNAL TYPE %s %s\n", indent, "", name, it->sname, fld ? "" : "ABSENT");
-		return 1;
-		case ASN1_ITYPE_COMPAT:
-		BIO_printf(out, "%*s%s:COMPATIBLE TYPE %s %s\n", indent, "", name, it->sname, fld ? "" : "ABSENT");
-		return 1;
-
+		/* Use new style print routine if possible */
+		ef = it->funcs;
+		if (ef && ef->asn1_ex_print)
+			{
+			if (!ef->asn1_ex_print(out, fld, indent, "", pctx))
+				return 0;
+			}
+		else if (BIO_printf(out, ":EXTERNAL TYPE %s\n", it->sname) <= 0)
+			return 0;
+		break;
 
 		case ASN1_ITYPE_CHOICE:
 		/* CHOICE type, get selector */
 		i = asn1_get_choice_selector(fld, it);
 		/* This should never happen... */
-		if((i < 0) || (i >= it->tcount)) {
-			BIO_printf(out, "%s selector [%d] out of range\n", it->sname, i);
+		if((i < 0) || (i >= it->tcount))
+			{
+			if (BIO_printf(out,
+				"ERROR: selector [%d] invalid\n", i) <= 0)
+				return 0;
 			return 1;
-		}
+			}
 		tt = it->templates + i;
-		tmpfld = asn1_get_field(fld, tt);
-		return ASN1_template_print(out, tmpfld, indent, tt);
+		tmpfld = asn1_get_field_ptr(fld, tt);
+		if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
+			return 0;
+		break;
 
 		case ASN1_ITYPE_SEQUENCE:
-		BIO_printf(out, "%*s%s {\n", indent, "", name);
-		/* Get each field entry */
-		for(i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
-			tmpfld = asn1_get_field(fld, tt);
-			ASN1_template_print(out, tmpfld, indent + 2, tt);
-		}
-		BIO_printf(out, "%*s}\n", indent, "");
-		return 1;
+		case ASN1_ITYPE_NDEF_SEQUENCE:
+		if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
+			{
+			if (BIO_puts(out, " {\n") <= 0)
+				return 0;
+			}
+		else
+			{
+			if (BIO_puts(out, "\n") <= 0)
+				return 0;
+			}
+
+		/* Print each field entry */
+		for(i = 0, tt = it->templates; i < it->tcount; i++, tt++)
+			{
+			const ASN1_TEMPLATE *seqtt;
+			seqtt = asn1_do_adb(fld, tt, 1);
+			tmpfld = asn1_get_field_ptr(fld, seqtt);
+			if (!asn1_template_print_ctx(out, tmpfld,
+						indent + 2, seqtt, pctx))
+				return 0;
+			}
+		if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
+			{
+			if (BIO_printf(out, "%*s}\n", indent, "") < 0)
+				return 0;
+			}
+		break;
 
 		default:
+		BIO_printf(out, "Unprocessed type %d\n", it->itype);
 		return 0;
+		}
+	if (BIO_puts(out, "\n") <= 0)
+		return 0;
+	return 1;
 	}
-}
 
-int ASN1_template_print(BIO *out, void *fld, int indent, const ASN1_TEMPLATE *tt)
-{
+int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
+				const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
+	{
 	int i, flags;
-#if 0
-	if(!fld) return 0; 
-#endif
 	flags = tt->flags;
-	if(flags & ASN1_TFLG_SK_MASK) {
+	if(flags & ASN1_TFLG_SK_MASK)
+		{
 		char *tname;
-		void *skitem;
+		ASN1_VALUE *skitem;
 		/* SET OF, SEQUENCE OF */
-		if(flags & ASN1_TFLG_SET_OF) tname = "SET";
-		else tname = "SEQUENCE";
-		if(fld) {
-			BIO_printf(out, "%*s%s OF %s {\n", indent, "", tname, tt->field_name);
-			for(i = 0; i < sk_num(fld); i++) {
-				skitem = sk_value(fld, i);
-				asn1_item_print_nm(out, skitem, indent + 2, tt->item, "");
+		if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
+			{
+			if(flags & ASN1_TFLG_SET_OF)
+				tname = "SET";
+			else
+				tname = "SEQUENCE";
+			if (BIO_printf(out, "%*s%s OF %s {\n",
+				indent, "", tname, tt->field_name) <= 0)
+				return 0;
+			}
+		else if (BIO_printf(out, "%*s%s:\n", indent, "",
+					tt->field_name) <= 0)
+				return 0;
+		for(i = 0; i < sk_num((STACK *)*fld); i++)
+			{
+			if (BIO_printf(out, "%*s", indent + 2, "") <= 0)
+				return 0;
+			skitem = (ASN1_VALUE *)sk_value((STACK *)*fld, i);
+			if (!asn1_item_print_ctx(out, &skitem, indent + 2,
+					tt->item, pctx))
+				return 0;
+			}
+		if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
+			{
+			if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
+				return 0;
 			}
-			BIO_printf(out, "%*s}\n", indent, "");
-		} else 
-			BIO_printf(out, "%*s%s OF %s ABSENT\n", indent, "", tname, tt->field_name);
 		return 1;
+		}
+	else if (BIO_printf(out, "%*s%s:", indent, "", tt->field_name) <= 0)
+				return 0;
+	return asn1_item_print_ctx(out, fld, indent, tt->item, pctx);
 	}
-	return asn1_item_print_nm(out, fld, indent, tt->item, tt->field_name);
-}
-
-static int asn1_primitive_print(BIO *out, void *fld, long utype, int indent, const char *name)
-{
-	ASN1_STRING *str = fld;
-	if(fld) {
-		if(utype == V_ASN1_BOOLEAN) {
-			int *bool = fld;
-if(*bool == -1) printf("BOOL MISSING\n");
-			BIO_printf(out, "%*s%s:%s", indent, "", "BOOLEAN", *bool ? "TRUE" : "FALSE");
-		} else if((utype == V_ASN1_INTEGER) 
-			  || (utype == V_ASN1_ENUMERATED)) {
-			char *s, *nm;
-			s = i2s_ASN1_INTEGER(NULL, fld);
-			if(utype == V_ASN1_INTEGER) nm = "INTEGER";
-			else nm = "ENUMERATED";
-			BIO_printf(out, "%*s%s:%s", indent, "", nm, s);
-			OPENSSL_free(s);
-		} else if(utype == V_ASN1_NULL) {
-			BIO_printf(out, "%*s%s", indent, "", "NULL");
-		} else if(utype == V_ASN1_UTCTIME) {
-			BIO_printf(out, "%*s%s:%s:", indent, "", name, "UTCTIME");
-			ASN1_UTCTIME_print(out, str);
-		} else if(utype == V_ASN1_GENERALIZEDTIME) {
-			BIO_printf(out, "%*s%s:%s:", indent, "", name, "GENERALIZEDTIME");
-			ASN1_GENERALIZEDTIME_print(out, str);
-		} else if(utype == V_ASN1_OBJECT) {
-			char objbuf[80], *ln;
-			ln = OBJ_nid2ln(OBJ_obj2nid(fld));
-			if(!ln) ln = "";
-			OBJ_obj2txt(objbuf, sizeof objbuf, fld, 1);
-			BIO_printf(out, "%*s%s:%s (%s)", indent, "", "OBJECT", ln, objbuf);
-		} else {
-			BIO_printf(out, "%*s%s:", indent, "", name);
-			ASN1_STRING_print_ex(out, str, ASN1_STRFLGS_DUMP_UNKNOWN|ASN1_STRFLGS_SHOW_TYPE);
+
+int asn1_print_fsname(BIO *out, int indent,
+			const char *fname, const char *sname,
+			const ASN1_PCTX *pctx)
+	{
+	static char spaces[] = "                    ";
+	const int nspaces = sizeof(spaces) - 1;
+	while (indent > nspaces)
+		{
+		if (BIO_write(out, spaces, nspaces) != nspaces)
+			return 0;
+		indent -= nspaces;
 		}
-		BIO_printf(out, "\n");
-	} else BIO_printf(out, "%*s%s [ABSENT]\n", indent, "", name);
+	if (BIO_write(out, spaces, indent) != indent)
+		return 0;
+	if (!(pctx->flags &
+		(ASN1_PCTX_FLAGS_NO_FIELD_NAME|ASN1_PCTX_FLAGS_NO_STRUCT_NAME)))
+		return 1;
+	if (fname && !(pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME))
+		{
+		if (BIO_puts(out, fname) <= 0)
+			return 0;
+		}
+	if (sname && !(pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME))
+		{
+		if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
+			{
+			if (BIO_puts(out, sname) <= 0)
+				return 0;
+			}
+		else if (BIO_printf(out, " (%s)", sname) <= 0)
+			return 0;
+		}
+	if (BIO_write(out, ":", 1) != 1)
+		return 0;
+	return 1;
+	}
+
+int asn1_print_boolean_ctx(BIO *out, const int bool, const ASN1_PCTX *pctx)
+	{
+	const char *str;
+	switch (bool)
+		{
+		case -1:
+		str = "BOOL ABSENT";
+		break;
+
+		case 0:
+		str = "FALSE";
+		break;
+
+		default:
+		str = "TRUE";
+		break;
+
+		}
+
+	if (BIO_puts(out, str) <= 0)
+		return 0;
+	return 1;
+
+	}
+
+static int asn1_print_integer_ctx(BIO *out, ASN1_INTEGER *str,
+						const ASN1_PCTX *pctx)
+	{
+	char *s;
+	int ret = 1;
+	s = i2s_ASN1_INTEGER(NULL, str);
+	if (BIO_printf(out, "%s", s) <= 0)
+		ret = 0;
+	OPENSSL_free(s);
+	return ret;
+	}
+
+static int asn1_print_oid_ctx(BIO *out, const ASN1_OBJECT *oid,
+						const ASN1_PCTX *pctx)
+	{
+	char objbuf[80];
+	const char *ln;
+	ln = OBJ_nid2ln(OBJ_obj2nid(oid));
+	if(!ln)
+		ln = "";
+	OBJ_obj2txt(objbuf, sizeof objbuf, oid, 1);
+	if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
+		return 0;
+	return 1;
+	}
+
+static int asn1_print_obstring_ctx(BIO *out, ASN1_STRING *str, int indent,
+						const ASN1_PCTX *pctx)
+	{
+	if (str->type == V_ASN1_BIT_STRING)
+		{
+		if (BIO_printf(out, " (%ld unused bits)\n",
+					str->flags & 0x7) <= 0)
+				return 0;
+		}
+	else if (BIO_puts(out, "\n") <= 0)
+		return 0;
+	if (BIO_dump_indent(out, (char *)str->data, str->length,
+				indent + 2) <= 0)
+		return 0;
 	return 1;
-}
+	}
+
+static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
+				const ASN1_ITEM *it, int indent,
+				const ASN1_PCTX *pctx)
+	{
+	long utype;
+	ASN1_STRING *str;
+	int ret = 1;
+	str = (ASN1_STRING *)*fld;
+	if (it->itype == ASN1_ITYPE_MSTRING)
+		utype = str->type & ~V_ASN1_NEG;
+	else
+		utype = it->utype;
+	if (utype == V_ASN1_ANY)
+		{
+		ASN1_TYPE *atype = (ASN1_TYPE *)*fld;
+		utype = atype->type;
+		fld = (ASN1_VALUE **)&atype->value.ptr;
+		str = (ASN1_STRING *)*fld;
+		}
+	if (BIO_puts(out, ASN1_tag2str(utype)) <= 0)
+		return 0;
+	if (utype != V_ASN1_NULL && BIO_puts(out, ":") <= 0)
+		return 0;
+
+	switch (utype)
+		{
+		case V_ASN1_BOOLEAN:
+			{
+			int bool = *(int *)fld;
+			if (bool == -1)
+				bool = it->size;
+			ret = asn1_print_boolean_ctx(out, bool, pctx);
+			}
+		break;
+
+		case V_ASN1_INTEGER:
+		case V_ASN1_ENUMERATED:
+		ret = asn1_print_integer_ctx(out, str, pctx);
+		break;
+
+		case V_ASN1_NULL:
+		break;
+
+		case V_ASN1_UTCTIME:
+		ret = ASN1_UTCTIME_print(out, str);
+		break;
+
+		case V_ASN1_GENERALIZEDTIME:
+		ret = ASN1_GENERALIZEDTIME_print(out, str);
+		break;
+
+		case V_ASN1_OBJECT:
+		ret = asn1_print_oid_ctx(out, (const ASN1_OBJECT *)*fld, pctx);
+		break;
+
+		case V_ASN1_OCTET_STRING:
+		case V_ASN1_BIT_STRING:
+		ret = asn1_print_obstring_ctx(out, str, indent, pctx);
+		break;
+
+		case V_ASN1_SEQUENCE:
+		case V_ASN1_SET:
+		if (ASN1_parse_dump(out, str->data, str->length,
+						indent, 0) <= 0)
+			ret = 0;
+		break;
+
+		default:
+		ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
+
+		}
+	if (!ret)
+		return 0;
+	return 1;
+	}