Support routines for ASN1 scanning function, doesn't do much yet.

crypto/asn1/Makefile

@@ -25,7 +25,7 @@ LIBSRC=	a_object.c a_bitstr.c a_utctm.c a_gentm.c a_time.c a_int.c a_octet.c \
 	x_nx509.c d2i_pu.c d2i_pr.c i2d_pu.c i2d_pr.c\
 	t_req.c t_x509.c t_x509a.c t_crl.c t_pkey.c t_spki.c t_bitst.c \
 	tasn_new.c tasn_fre.c tasn_enc.c tasn_dec.c tasn_utl.c tasn_typ.c \
-	tasn_prn.c ameth_lib.c \
+	tasn_prn.c tasn_scn.c ameth_lib.c \
 	f_int.c f_string.c n_pkey.c \
 	f_enum.c x_pkey.c a_bool.c x_exten.c bio_asn1.c bio_ndef.c asn_mime.c \
 	asn1_gen.c asn1_par.c asn1_lib.c asn1_err.c a_bytes.c a_strnid.c \
@@ -38,7 +38,7 @@ LIBOBJ= a_object.o a_bitstr.o a_utctm.o a_gentm.o a_time.o a_int.o a_octet.o \
 	x_nx509.o d2i_pu.o d2i_pr.o i2d_pu.o i2d_pr.o \
 	t_req.o t_x509.o t_x509a.o t_crl.o t_pkey.o t_spki.o t_bitst.o \
 	tasn_new.o tasn_fre.o tasn_enc.o tasn_dec.o tasn_utl.o tasn_typ.o \
-	tasn_prn.o ameth_lib.o \
+	tasn_prn.o tasn_scn.o ameth_lib.o \
 	f_int.o f_string.o n_pkey.o \
 	f_enum.o x_pkey.o a_bool.o x_exten.o bio_asn1.o bio_ndef.o asn_mime.o \
 	asn1_gen.o asn1_par.o asn1_lib.o asn1_err.o a_bytes.o a_strnid.o \

crypto/asn1/a_verify.c

@@ -60,7 +60,6 @@
 #include <time.h>
 
 #include "cryptlib.h"
-#include "asn1_locl.h"
 
 #ifndef NO_SYS_TYPES_H
 # include <sys/types.h>
@@ -71,6 +70,7 @@
 #include <openssl/objects.h>
 #include <openssl/buffer.h>
 #include <openssl/evp.h>
+#include "asn1_locl.h"
 
 #ifndef NO_ASN1_OLD
 

crypto/asn1/asn1.h

@@ -1130,6 +1130,14 @@ void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags);
 unsigned long ASN1_PCTX_get_str_flags(ASN1_PCTX *p);
 void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags);
 
+ASN1_SCTX *ASN1_SCTX_new(int (*scan_cb)(ASN1_SCTX *ctx));
+void ASN1_SCTX_free(ASN1_SCTX *p);
+const ASN1_ITEM *ASN1_SCTX_get_item(ASN1_SCTX *p);
+const ASN1_TEMPLATE * ASN1_SCTX_get_template(ASN1_SCTX *p);
+unsigned long ASN1_SCTX_get_flags(ASN1_SCTX *p);
+void ASN1_SCTX_set_app_data(ASN1_SCTX *p, void *data);
+void *ASN1_SCTX_get_app_data(ASN1_SCTX *p);
+
 BIO_METHOD *BIO_f_asn1(void);
 
 BIO *BIO_new_NDEF(BIO *out, ASN1_VALUE *val, const ASN1_ITEM *it);

crypto/asn1/asn1_locl.h

@@ -69,6 +69,32 @@ struct asn1_pctx_st
 	unsigned long str_flags;
 	} /* ASN1_PCTX */;
 
+/* ASN1 scan context structure */
+
+struct asn1_sctx_st
+	{
+	/* The ASN1_ITEM associated with this field */
+	const ASN1_ITEM *it;
+	/* If ASN1_TEMPLATE associated with this field */
+	const ASN1_TEMPLATE *tt;
+	/* Various flags associated with field and context */
+	unsigned long flags;
+	/* If SEQUENCE OF or SET OF, field index */
+	int skidx;
+	/* ASN1 depth of field */
+	int depth;
+	/* Structure and field name */
+	const char *sname, *fname;
+	/* If a primitive type the type of underlying field */
+	int prim_type;
+	/* The field value itself */
+	ASN1_VALUE **field;
+	/* Callback to pass information to */
+	int (*scan_cb)(ASN1_SCTX *ctx);
+	/* Context specific application data */
+	void *app_data;
+	} /* ASN1_SCTX */;
+
 /* ASN1 public key method structure */
 
 struct evp_pkey_asn1_method_st

crypto/asn1/tasn_scn.c

@@ -0,0 +1,117 @@
+/* tasn_scn.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2010.
+ */
+/* ====================================================================
+ * Copyright (c) 2010 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).
+ *
+ */
+
+
+#include <stddef.h>
+#include "cryptlib.h"
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/objects.h>
+#include <openssl/buffer.h>
+#include <openssl/err.h>
+#include <openssl/x509v3.h>
+#include "asn1_locl.h"
+
+/* General ASN1 structure recursive scanner: iterate through all
+ * fields passing details to a callback.
+ */
+
+ASN1_SCTX *ASN1_SCTX_new(int (*scan_cb)(ASN1_SCTX *ctx))
+	{
+	ASN1_SCTX *ret;
+	ret = OPENSSL_malloc(sizeof(ASN1_SCTX));
+	if (ret == NULL)
+		{
+		ASN1err(ASN1_F_ASN1_PCTX_NEW, ERR_R_MALLOC_FAILURE);
+		return NULL;
+		}
+	ret->scan_cb = scan_cb;
+	return ret;
+	}
+
+void ASN1_SCTX_free(ASN1_SCTX *p)
+	{
+	OPENSSL_free(p);
+	}
+
+const ASN1_ITEM *ASN1_SCTX_get_item(ASN1_SCTX *p)
+	{
+	return p->it;
+	}
+
+const ASN1_TEMPLATE * ASN1_SCTX_get_template(ASN1_SCTX *p)
+	{
+	return p->tt;
+	}
+
+unsigned long ASN1_SCTX_get_flags(ASN1_SCTX *p)
+	{
+	return p->flags;
+	}
+
+void ASN1_SCTX_set_app_data(ASN1_SCTX *p, void *data)
+	{
+	p->app_data = data;
+	}
+
+void *ASN1_SCTX_get_app_data(ASN1_SCTX *p)
+	{
+	return p->app_data;
+	}
+
+

crypto/asn1/x_crl.c

@@ -58,8 +58,8 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "asn1_locl.h"
 #include <openssl/asn1t.h>
+#include "asn1_locl.h"
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
 

crypto/ossl_typ.h

@@ -98,6 +98,7 @@ typedef int ASN1_NULL;
 
 typedef struct ASN1_ITEM_st ASN1_ITEM;
 typedef struct asn1_pctx_st ASN1_PCTX;
+typedef struct asn1_sctx_st ASN1_SCTX;
 
 #ifdef OPENSSL_SYS_WIN32
 #undef X509_NAME