Merge from the ASN1 branch of new ASN1 code

to main trunk.

Lets see if the makes it to openssl-cvs :-)

1 files changed, 158 insertions, 174 deletions

diff --git a/crypto/asn1/x_name.c b/crypto/asn1/x_name.c
index b832deb928..5da0669492 100644
--- a/crypto/asn1/x_name.c
+++ b/crypto/asn1/x_name.c
@@ -58,204 +58,188 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include <openssl/objects.h>
-#include <openssl/asn1_mac.h>
+#include <openssl/asn1t.h>
 #include <openssl/x509.h>
 
-static int i2d_X509_NAME_entries(X509_NAME *a);
-int i2d_X509_NAME_ENTRY(X509_NAME_ENTRY *a, unsigned char **pp)
-	{
-	M_ASN1_I2D_vars(a);
-
-	M_ASN1_I2D_len(a->object,i2d_ASN1_OBJECT);
-	M_ASN1_I2D_len(a->value,i2d_ASN1_PRINTABLE);
-
-	M_ASN1_I2D_seq_total();
-
-	M_ASN1_I2D_put(a->object,i2d_ASN1_OBJECT);
-	M_ASN1_I2D_put(a->value,i2d_ASN1_PRINTABLE);
-
-	M_ASN1_I2D_finish();
-	}
-
-X509_NAME_ENTRY *d2i_X509_NAME_ENTRY(X509_NAME_ENTRY **a, unsigned char **pp,
-	     long length)
-	{
-	M_ASN1_D2I_vars(a,X509_NAME_ENTRY *,X509_NAME_ENTRY_new);
-
-	M_ASN1_D2I_Init();
-	M_ASN1_D2I_start_sequence();
-	M_ASN1_D2I_get(ret->object,d2i_ASN1_OBJECT);
-	M_ASN1_D2I_get(ret->value,d2i_ASN1_PRINTABLE);
-	ret->set=0;
-	M_ASN1_D2I_Finish(a,X509_NAME_ENTRY_free,ASN1_F_D2I_X509_NAME_ENTRY);
-	}
-
-int i2d_X509_NAME(X509_NAME *a, unsigned char **pp)
-	{
-	int ret;
-
-	if (a == NULL) return(0);
-	if (a->modified)
-		{
-		ret=i2d_X509_NAME_entries(a);
-		if (ret < 0) return(ret);
-		}
-
-	ret=a->bytes->length;
-	if (pp != NULL)
-		{
-		memcpy(*pp,a->bytes->data,ret);
-		*pp+=ret;
-		}
-	return(ret);
-	}
+static int x509_name_ex_d2i(ASN1_VALUE **val, unsigned char **in, long len, const ASN1_ITEM *it,
+					int tag, int aclass, char opt, ASN1_TLC *ctx);
 
-static int i2d_X509_NAME_entries(X509_NAME *a)
-	{
-	X509_NAME_ENTRY *ne,*fe=NULL;
-	STACK_OF(X509_NAME_ENTRY) *sk;
-	BUF_MEM *buf=NULL;
-	int set=0,r,ret=0;
-	int i;
-	unsigned char *p;
-	int size=0;
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
+static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
 
-	sk=a->entries;
-	for (i=0; i<sk_X509_NAME_ENTRY_num(sk); i++)
-		{
-		ne=sk_X509_NAME_ENTRY_value(sk,i);
-		if (fe == NULL)
-			{
-			fe=ne;
-			size=0;
-			}
+static int x509_name_encode(X509_NAME *a);
 
-		if (ne->set != set)
-			{
-			ret+=ASN1_object_size(1,size,V_ASN1_SET);
-			fe->size=size;
-			fe=ne;
-			size=0;
-			set=ne->set;
-			}
-		size+=i2d_X509_NAME_ENTRY(ne,NULL);
-		}
-
-	ret+=ASN1_object_size(1,size,V_ASN1_SET);
-	if (fe != NULL)
-		fe->size=size;
-
-	r=ASN1_object_size(1,ret,V_ASN1_SEQUENCE);
+ASN1_SEQUENCE(X509_NAME_ENTRY) = {
+	ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
+	ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
+} ASN1_SEQUENCE_END(X509_NAME_ENTRY);
 
-	buf=a->bytes;
-	if (!BUF_MEM_grow(buf,r)) goto err;
-	p=(unsigned char *)buf->data;
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
 
-	ASN1_put_object(&p,1,ret,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
-
-	set= -1;
-	for (i=0; i<sk_X509_NAME_ENTRY_num(sk); i++)
-		{
-		ne=sk_X509_NAME_ENTRY_value(sk,i);
-		if (set != ne->set)
-			{
-			set=ne->set;
-			ASN1_put_object(&p,1,ne->size,
-				V_ASN1_SET,V_ASN1_UNIVERSAL);
-			}
-		i2d_X509_NAME_ENTRY(ne,&p);
-		}
-	a->modified=0;
-	return(r);
-err:
-	return(-1);
-	}
+/* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY }
+ * so declare two template wrappers for this
+ */
 
-X509_NAME *d2i_X509_NAME(X509_NAME **a, unsigned char **pp, long length)
-	{
-	int set=0,i;
-	int idx=0;
-	unsigned char *orig;
-	M_ASN1_D2I_vars(a,X509_NAME *,X509_NAME_new);
+ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
+	ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES);
 
-	orig= *pp;
-	if (sk_X509_NAME_ENTRY_num(ret->entries) > 0)
-		{
-		while (sk_X509_NAME_ENTRY_num(ret->entries) > 0)
-			X509_NAME_ENTRY_free(
-				       sk_X509_NAME_ENTRY_pop(ret->entries));
-		}
+ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
+	ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL);
 
-	M_ASN1_D2I_Init();
-	M_ASN1_D2I_start_sequence();
-	for (;;)
-		{
-		if (M_ASN1_D2I_end_sequence()) break;
-		M_ASN1_D2I_get_set_type(X509_NAME_ENTRY,ret->entries,
-					d2i_X509_NAME_ENTRY,
-					X509_NAME_ENTRY_free);
-		for (; idx < sk_X509_NAME_ENTRY_num(ret->entries); idx++)
-			{
-			sk_X509_NAME_ENTRY_value(ret->entries,idx)->set=set;
-			}
-		set++;
-		}
+/* Normally that's where it would end: we'd have two nested STACK structures
+ * representing the ASN1. Unfortunately X509_NAME uses a completely different
+ * form and caches encodings so we have to process the internal form and convert
+ * to the external form.
+ */
 
-	i=(int)(c.p-orig);
-	if (!BUF_MEM_grow(ret->bytes,i)) goto err;
-	memcpy(ret->bytes->data,orig,i);
-	ret->bytes->length=i;
-	ret->modified=0;
+const ASN1_EXTERN_FUNCS x509_name_ff = {
+	NULL,
+	x509_name_ex_new,
+	x509_name_ex_free,
+	0,	/* Default clear behaviour is OK */
+	x509_name_ex_d2i,
+	x509_name_ex_i2d
+};
 
-	M_ASN1_D2I_Finish(a,X509_NAME_free,ASN1_F_D2I_X509_NAME);
-	}
+IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff) 
 
-X509_NAME *X509_NAME_new(void)
-	{
-	X509_NAME *ret=NULL;
-	ASN1_CTX c;
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
 
-	M_ASN1_New_Malloc(ret,X509_NAME);
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
+{
+	X509_NAME *ret = NULL;
+	ret = OPENSSL_malloc(sizeof(X509_NAME));
+	if(!ret) goto memerr;
 	if ((ret->entries=sk_X509_NAME_ENTRY_new_null()) == NULL)
-		{ c.line=__LINE__; goto err2; }
-	M_ASN1_New(ret->bytes,BUF_MEM_new);
+		goto memerr;
+	if((ret->bytes = BUF_MEM_new()) == NULL) goto memerr;
 	ret->modified=1;
-	return(ret);
-	M_ASN1_New_Error(ASN1_F_X509_NAME_NEW);
-	}
-
-X509_NAME_ENTRY *X509_NAME_ENTRY_new(void)
-	{
-	X509_NAME_ENTRY *ret=NULL;
-	ASN1_CTX c;
-
-	M_ASN1_New_Malloc(ret,X509_NAME_ENTRY);
-/*	M_ASN1_New(ret->object,ASN1_OBJECT_new);*/
-	ret->object=NULL;
-	ret->set=0;
-	M_ASN1_New(ret->value,ASN1_STRING_new);
-	return(ret);
-	M_ASN1_New_Error(ASN1_F_X509_NAME_ENTRY_NEW);
-	}
-
-void X509_NAME_free(X509_NAME *a)
-	{
-	if(a == NULL)
+	*val = (ASN1_VALUE *)ret;
+	return 1;
+	memerr:
+	ASN1err(ASN1_F_X509_NAME_NEW, ERR_R_MALLOC_FAILURE);
+	return 0;
+}
+
+static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+	X509_NAME *a;
+	if(!pval || !*pval)
 	    return;
+	a = (X509_NAME *)*pval;
 
 	BUF_MEM_free(a->bytes);
 	sk_X509_NAME_ENTRY_pop_free(a->entries,X509_NAME_ENTRY_free);
 	OPENSSL_free(a);
+	*pval = NULL;
+}
+
+/* Used with sk_pop_free() to free up the internal representation.
+ * NB: we only free the STACK and not its contents because it is
+ * already present in the X509_NAME structure.
+ */
+
+static void sk_internal_free(void *a)
+{
+	sk_free(a);
+}
+
+static int x509_name_ex_d2i(ASN1_VALUE **val, unsigned char **in, long len, const ASN1_ITEM *it,
+					int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+	unsigned char *p = *in, *q;
+	STACK *intname = NULL;
+	int i, j, ret;
+	X509_NAME *nm = NULL;
+	STACK_OF(X509_NAME_ENTRY) *entries;
+	X509_NAME_ENTRY *entry;
+	q = p;
+
+	/* Get internal representation of Name */
+	ret = ASN1_item_ex_d2i((ASN1_VALUE **)&intname, &p, len, &X509_NAME_INTERNAL_it,
+								tag, aclass, opt, ctx);
+	
+	if(ret <= 0) return ret;
+
+	if(*val) x509_name_ex_free(val, NULL);
+	if(!x509_name_ex_new((ASN1_VALUE **)&nm, NULL)) goto err;
+	/* We've decoded it: now cache encoding */
+	if(!BUF_MEM_grow(nm->bytes, p - q)) goto err;
+	memcpy(nm->bytes->data, q, p - q);
+
+	/* Convert internal representation to X509_NAME structure */
+	for(i = 0; i < sk_num(intname); i++) {
+		entries = (STACK_OF(X509_NAME_ENTRY) *)sk_value(intname, i);
+		for(j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
+			entry = sk_X509_NAME_ENTRY_value(entries, j);
+			entry->set = i;
+			if(!sk_X509_NAME_ENTRY_push(nm->entries, entry))
+				goto err;
+		}
+		sk_X509_NAME_ENTRY_free(entries);
 	}
+	sk_free(intname);
+	nm->modified = 0;
+	*val = (ASN1_VALUE *)nm;
+	*in = p;
+	return ret;
+	err:
+	ASN1err(ASN1_F_D2I_X509_NAME, ERR_R_NESTED_ASN1_ERROR);
+	return 0;
+}
+
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass)
+{
+	int ret;
+	X509_NAME *a = (X509_NAME *)*val;
+	if(a->modified) {
+		ret = x509_name_encode((X509_NAME *)a);
+		if(ret < 0) return ret;
+	}
+	ret = a->bytes->length;
+	if(out != NULL) {
+		memcpy(*out,a->bytes->data,ret);
+		*out+=ret;
+	}
+	return ret;
+}
 
-void X509_NAME_ENTRY_free(X509_NAME_ENTRY *a)
-	{
-	if (a == NULL) return;
-	ASN1_OBJECT_free(a->object);
-	M_ASN1_BIT_STRING_free(a->value);
-	OPENSSL_free(a);
+static int x509_name_encode(X509_NAME *a)
+{
+	STACK *intname = NULL;
+	int len;
+	unsigned char *p;
+	STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+	X509_NAME_ENTRY *entry;
+	int i, set = -1;
+	intname = sk_new_null();
+	if(!intname) goto memerr;
+	for(i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+		entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+		if(entry->set != set) {
+			entries = sk_X509_NAME_ENTRY_new_null();
+			if(!entries) goto memerr;
+			if(!sk_push(intname, (char *)entries)) goto memerr;
+			set = entry->set;
+		}
+		if(!sk_X509_NAME_ENTRY_push(entries, entry)) goto memerr;
 	}
+	len = ASN1_item_ex_i2d((ASN1_VALUE **)&intname, NULL, &X509_NAME_INTERNAL_it, -1, -1);
+	if (!BUF_MEM_grow(a->bytes,len)) goto memerr;
+	p=(unsigned char *)a->bytes->data;
+	ASN1_item_ex_i2d((ASN1_VALUE **)&intname, &p, &X509_NAME_INTERNAL_it, -1, -1);
+	sk_pop_free(intname, sk_internal_free);
+	a->modified = 0;
+	return len;
+	memerr:
+	sk_pop_free(intname, sk_internal_free);
+	ASN1err(ASN1_F_D2I_X509_NAME, ERR_R_MALLOC_FAILURE);
+	return -1;
+}
+
 
 int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
 	{