Merged origin/release (checked in because wanted to merge new stuff)

1 files changed, 559 insertions, 594 deletions

diff --git a/openssl/crypto/asn1/tasn_enc.c b/openssl/crypto/asn1/tasn_enc.c
index 1390e5e6a..f04a6892a 100644
--- a/openssl/crypto/asn1/tasn_enc.c
+++ b/openssl/crypto/asn1/tasn_enc.c
@@ -1,6 +1,7 @@
 /* tasn_enc.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2000.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
  */
 /* ====================================================================
  * Copyright (c) 2000-2004 The OpenSSL Project.  All rights reserved.
@@ -10,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    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
@@ -56,7 +57,6 @@
  *
  */
 
-
 #include <stddef.h>
 #include <string.h>
 #include "cryptlib.h"
@@ -65,632 +65,597 @@
 #include <openssl/objects.h>
 
 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
-					const ASN1_ITEM *it,
-					int tag, int aclass);
+                                 const ASN1_ITEM *it, int tag, int aclass);
 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
-					int skcontlen, const ASN1_ITEM *item,
-					int do_sort, int iclass);
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass);
 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
-					const ASN1_TEMPLATE *tt,
-					int tag, int aclass);
+                                const ASN1_TEMPLATE *tt, int tag, int aclass);
 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
-					const ASN1_ITEM *it, int flags);
+                               const ASN1_ITEM *it, int flags);
 
-/* Top level i2d equivalents: the 'ndef' variant instructs the encoder
- * to use indefinite length constructed encoding, where appropriate
+/*
+ * Top level i2d equivalents: the 'ndef' variant instructs the encoder to use
+ * indefinite length constructed encoding, where appropriate
  */
 
 int ASN1_item_ndef_i2d(ASN1_VALUE *val, unsigned char **out,
-						const ASN1_ITEM *it)
-	{
-	return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
-	}
+                       const ASN1_ITEM *it)
+{
+    return asn1_item_flags_i2d(val, out, it, ASN1_TFLG_NDEF);
+}
 
 int ASN1_item_i2d(ASN1_VALUE *val, unsigned char **out, const ASN1_ITEM *it)
-	{
-	return asn1_item_flags_i2d(val, out, it, 0);
-	}
+{
+    return asn1_item_flags_i2d(val, out, it, 0);
+}
 
-/* Encode an ASN1 item, this is use by the
- * standard 'i2d' function. 'out' points to 
- * a buffer to output the data to.
- *
- * The new i2d has one additional feature. If the output
- * buffer is NULL (i.e. *out == NULL) then a buffer is
+/*
+ * Encode an ASN1 item, this is use by the standard 'i2d' function. 'out'
+ * points to a buffer to output the data to. The new i2d has one additional
+ * feature. If the output buffer is NULL (i.e. *out == NULL) then a buffer is
  * allocated and populated with the encoding.
  */
 
 static int asn1_item_flags_i2d(ASN1_VALUE *val, unsigned char **out,
-					const ASN1_ITEM *it, int flags)
-	{
-	if (out && !*out)
-		{
-		unsigned char *p, *buf;
-		int len;
-		len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags);
-		if (len <= 0)
-			return len;
-		buf = OPENSSL_malloc(len);
-		if (!buf)
-			return -1;
-		p = buf;
-		ASN1_item_ex_i2d(&val, &p, it, -1, flags);
-		*out = buf;
-		return len;
-		}
-
-	return ASN1_item_ex_i2d(&val, out, it, -1, flags);
-	}
-
-/* Encode an item, taking care of IMPLICIT tagging (if any).
- * This function performs the normal item handling: it can be
- * used in external types.
+                               const ASN1_ITEM *it, int flags)
+{
+    if (out && !*out) {
+        unsigned char *p, *buf;
+        int len;
+        len = ASN1_item_ex_i2d(&val, NULL, it, -1, flags);
+        if (len <= 0)
+            return len;
+        buf = OPENSSL_malloc(len);
+        if (!buf)
+            return -1;
+        p = buf;
+        ASN1_item_ex_i2d(&val, &p, it, -1, flags);
+        *out = buf;
+        return len;
+    }
+
+    return ASN1_item_ex_i2d(&val, out, it, -1, flags);
+}
+
+/*
+ * Encode an item, taking care of IMPLICIT tagging (if any). This function
+ * performs the normal item handling: it can be used in external types.
  */
 
 int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
-			const ASN1_ITEM *it, int tag, int aclass)
-	{
-	const ASN1_TEMPLATE *tt = NULL;
-	unsigned char *p = NULL;
-	int i, seqcontlen, seqlen, ndef = 1;
-	const ASN1_COMPAT_FUNCS *cf;
-	const ASN1_EXTERN_FUNCS *ef;
-	const ASN1_AUX *aux = it->funcs;
-	ASN1_aux_cb *asn1_cb = 0;
-
-	if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
-		return 0;
-
-	if (aux && aux->asn1_cb)
-		 asn1_cb = aux->asn1_cb;
-
-	switch(it->itype)
-		{
-
-		case ASN1_ITYPE_PRIMITIVE:
-		if (it->templates)
-			return asn1_template_ex_i2d(pval, out, it->templates,
-								tag, aclass);
-		return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
-		break;
-
-		case ASN1_ITYPE_MSTRING:
-		return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
-
-		case ASN1_ITYPE_CHOICE:
-		if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
-				return 0;
-		i = asn1_get_choice_selector(pval, it);
-		if ((i >= 0) && (i < it->tcount))
-			{
-			ASN1_VALUE **pchval;
-			const ASN1_TEMPLATE *chtt;
-			chtt = it->templates + i;
-			pchval = asn1_get_field_ptr(pval, chtt);
-			return asn1_template_ex_i2d(pchval, out, chtt,
-								-1, aclass);
-			}
-		/* Fixme: error condition if selector out of range */
-		if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
-				return 0;
-		break;
-
-		case ASN1_ITYPE_EXTERN:
-		/* If new style i2d it does all the work */
-		ef = it->funcs;
-		return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
-
-		case ASN1_ITYPE_COMPAT:
-		/* old style hackery... */
-		cf = it->funcs;
-		if (out)
-			p = *out;
-		i = cf->asn1_i2d(*pval, out);
-		/* Fixup for IMPLICIT tag: note this messes up for tags > 30,
-		 * but so did the old code. Tags > 30 are very rare anyway.
-		 */
-		if (out && (tag != -1))
-			*p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
-		return i;
-		
-		case ASN1_ITYPE_NDEF_SEQUENCE:
-		/* Use indefinite length constructed if requested */
-		if (aclass & ASN1_TFLG_NDEF) ndef = 2;
-		/* fall through */
-
-		case ASN1_ITYPE_SEQUENCE:
-		i = asn1_enc_restore(&seqcontlen, out, pval, it);
-		/* An error occurred */
-		if (i < 0)
-			return 0;
-		/* We have a valid cached encoding... */
-		if (i > 0)
-			return seqcontlen;
-		/* Otherwise carry on */
-		seqcontlen = 0;
-		/* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
-		if (tag == -1)
-			{
-			tag = V_ASN1_SEQUENCE;
-			/* Retain any other flags in aclass */
-			aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
-					| V_ASN1_UNIVERSAL;
-			}
-		if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
-				return 0;
-		/* First work out sequence content length */
-		for (i = 0, tt = it->templates; i < it->tcount; tt++, i++)
-			{
-			const ASN1_TEMPLATE *seqtt;
-			ASN1_VALUE **pseqval;
-			seqtt = asn1_do_adb(pval, tt, 1);
-			if (!seqtt)
-				return 0;
-			pseqval = asn1_get_field_ptr(pval, seqtt);
-			/* FIXME: check for errors in enhanced version */
-			seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,
-								-1, aclass);
-			}
-
-		seqlen = ASN1_object_size(ndef, seqcontlen, tag);
-		if (!out)
-			return seqlen;
-		/* Output SEQUENCE header */
-		ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
-		for (i = 0, tt = it->templates; i < it->tcount; tt++, i++)
-			{
-			const ASN1_TEMPLATE *seqtt;
-			ASN1_VALUE **pseqval;
-			seqtt = asn1_do_adb(pval, tt, 1);
-			if (!seqtt)
-				return 0;
-			pseqval = asn1_get_field_ptr(pval, seqtt);
-			/* FIXME: check for errors in enhanced version */
-			asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
-			}
-		if (ndef == 2)
-			ASN1_put_eoc(out);
-		if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
-				return 0;
-		return seqlen;
-
-		default:
-		return 0;
-
-		}
-	return 0;
-	}
+                     const ASN1_ITEM *it, int tag, int aclass)
+{
+    const ASN1_TEMPLATE *tt = NULL;
+    unsigned char *p = NULL;
+    int i, seqcontlen, seqlen, ndef = 1;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb = 0;
+
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval)
+        return 0;
+
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+
+    switch (it->itype) {
+
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates)
+            return asn1_template_ex_i2d(pval, out, it->templates,
+                                        tag, aclass);
+        return asn1_i2d_ex_primitive(pval, out, it, tag, aclass);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        i = asn1_get_choice_selector(pval, it);
+        if ((i >= 0) && (i < it->tcount)) {
+            ASN1_VALUE **pchval;
+            const ASN1_TEMPLATE *chtt;
+            chtt = it->templates + i;
+            pchval = asn1_get_field_ptr(pval, chtt);
+            return asn1_template_ex_i2d(pchval, out, chtt, -1, aclass);
+        }
+        /* Fixme: error condition if selector out of range */
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        break;
+
+    case ASN1_ITYPE_EXTERN:
+        /* If new style i2d it does all the work */
+        ef = it->funcs;
+        return ef->asn1_ex_i2d(pval, out, it, tag, aclass);
+
+    case ASN1_ITYPE_COMPAT:
+        /* old style hackery... */
+        cf = it->funcs;
+        if (out)
+            p = *out;
+        i = cf->asn1_i2d(*pval, out);
+        /*
+         * Fixup for IMPLICIT tag: note this messes up for tags > 30, but so
+         * did the old code. Tags > 30 are very rare anyway.
+         */
+        if (out && (tag != -1))
+            *p = aclass | tag | (*p & V_ASN1_CONSTRUCTED);
+        return i;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+        /* Use indefinite length constructed if requested */
+        if (aclass & ASN1_TFLG_NDEF)
+            ndef = 2;
+        /* fall through */
+
+    case ASN1_ITYPE_SEQUENCE:
+        i = asn1_enc_restore(&seqcontlen, out, pval, it);
+        /* An error occurred */
+        if (i < 0)
+            return 0;
+        /* We have a valid cached encoding... */
+        if (i > 0)
+            return seqcontlen;
+        /* Otherwise carry on */
+        seqcontlen = 0;
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            /* Retain any other flags in aclass */
+            aclass = (aclass & ~ASN1_TFLG_TAG_CLASS)
+                | V_ASN1_UNIVERSAL;
+        }
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
+            return 0;
+        /* First work out sequence content length */
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* FIXME: check for errors in enhanced version */
+            seqcontlen += asn1_template_ex_i2d(pseqval, NULL, seqtt,
+                                               -1, aclass);
+        }
+
+        seqlen = ASN1_object_size(ndef, seqcontlen, tag);
+        if (!out)
+            return seqlen;
+        /* Output SEQUENCE header */
+        ASN1_put_object(out, ndef, seqcontlen, tag, aclass);
+        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                return 0;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* FIXME: check for errors in enhanced version */
+            asn1_template_ex_i2d(pseqval, out, seqtt, -1, aclass);
+        }
+        if (ndef == 2)
+            ASN1_put_eoc(out);
+        if (asn1_cb && !asn1_cb(ASN1_OP_I2D_POST, pval, it, NULL))
+            return 0;
+        return seqlen;
+
+    default:
+        return 0;
+
+    }
+    return 0;
+}
 
 int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out,
-							const ASN1_TEMPLATE *tt)
-	{
-	return asn1_template_ex_i2d(pval, out, tt, -1, 0);
-	}
+                      const ASN1_TEMPLATE *tt)
+{
+    return asn1_template_ex_i2d(pval, out, tt, -1, 0);
+}
 
 static int asn1_template_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
-				const ASN1_TEMPLATE *tt, int tag, int iclass)
-	{
-	int i, ret, flags, ttag, tclass, ndef;
-	flags = tt->flags;
-	/* Work out tag and class to use: tagging may come
-	 * either from the template or the arguments, not both
-	 * because this would create ambiguity. Additionally
-	 * the iclass argument may contain some additional flags
-	 * which should be noted and passed down to other levels.
-	 */
-	if (flags & ASN1_TFLG_TAG_MASK)
-		{
-		/* Error if argument and template tagging */
-		if (tag != -1)
-			/* FIXME: error code here */
-			return -1;
-		/* Get tagging from template */
-		ttag = tt->tag;
-		tclass = flags & ASN1_TFLG_TAG_CLASS;
-		}
-	else if (tag != -1)
-		{
-		/* No template tagging, get from arguments */
-		ttag = tag;
-		tclass = iclass & ASN1_TFLG_TAG_CLASS;
-		}
-	else
-		{
-		ttag = -1;
-		tclass = 0;
-		}
-	/* 
-	 * Remove any class mask from iflag.
-	 */
-	iclass &= ~ASN1_TFLG_TAG_CLASS;
-
-	/* At this point 'ttag' contains the outer tag to use,
-	 * 'tclass' is the class and iclass is any flags passed
-	 * to this function.
-	 */
-
-	/* if template and arguments require ndef, use it */
-	if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))
-		ndef = 2;
-	else ndef = 1;
-
-	if (flags & ASN1_TFLG_SK_MASK)
-		{
-		/* SET OF, SEQUENCE OF */
-		STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
-		int isset, sktag, skaclass;
-		int skcontlen, sklen;
-		ASN1_VALUE *skitem;
-
-		if (!*pval)
-			return 0;
-
-		if (flags & ASN1_TFLG_SET_OF)
-			{
-			isset = 1;
-			/* 2 means we reorder */
-			if (flags & ASN1_TFLG_SEQUENCE_OF)
-				isset = 2;
-			}
-		else isset = 0;
-
-		/* Work out inner tag value: if EXPLICIT
-		 * or no tagging use underlying type.
-		 */
-		if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG))
-			{
-			sktag = ttag;
-			skaclass = tclass;
-			}
-		else
-			{
-			skaclass = V_ASN1_UNIVERSAL;
-			if (isset)
-				sktag = V_ASN1_SET;
-			else sktag = V_ASN1_SEQUENCE;
-			}
-
-		/* Determine total length of items */
-		skcontlen = 0;
-		for (i = 0; i < sk_ASN1_VALUE_num(sk); i++)
-			{
-			skitem = sk_ASN1_VALUE_value(sk, i);
-			skcontlen += ASN1_item_ex_i2d(&skitem, NULL,
-						ASN1_ITEM_ptr(tt->item),
-							-1, iclass);
-			}
-		sklen = ASN1_object_size(ndef, skcontlen, sktag);
-		/* If EXPLICIT need length of surrounding tag */
-		if (flags & ASN1_TFLG_EXPTAG)
-			ret = ASN1_object_size(ndef, sklen, ttag);
-		else ret = sklen;
-
-		if (!out)
-			return ret;
-
-		/* Now encode this lot... */
-		/* EXPLICIT tag */
-		if (flags & ASN1_TFLG_EXPTAG)
-			ASN1_put_object(out, ndef, sklen, ttag, tclass);
-		/* SET or SEQUENCE and IMPLICIT tag */
-		ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
-		/* And the stuff itself */
-		asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
-								isset, iclass);
-		if (ndef == 2)
-			{
-			ASN1_put_eoc(out);
-			if (flags & ASN1_TFLG_EXPTAG)
-				ASN1_put_eoc(out);
-			}
-
-		return ret;
-		}
-
-	if (flags & ASN1_TFLG_EXPTAG)
-		{
-		/* EXPLICIT tagging */
-		/* Find length of tagged item */
-		i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item),
-								-1, iclass);
-		if (!i)
-			return 0;
-		/* Find length of EXPLICIT tag */
-		ret = ASN1_object_size(ndef, i, ttag);
-		if (out)
-			{
-			/* Output tag and item */
-			ASN1_put_object(out, ndef, i, ttag, tclass);
-			ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
-								-1, iclass);
-			if (ndef == 2)
-				ASN1_put_eoc(out);
-			}
-		return ret;
-		}
-
-	/* Either normal or IMPLICIT tagging: combine class and flags */
-	return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
-						ttag, tclass | iclass);
+                                const ASN1_TEMPLATE *tt, int tag, int iclass)
+{
+    int i, ret, flags, ttag, tclass, ndef;
+    flags = tt->flags;
+    /*
+     * Work out tag and class to use: tagging may come either from the
+     * template or the arguments, not both because this would create
+     * ambiguity. Additionally the iclass argument may contain some
+     * additional flags which should be noted and passed down to other
+     * levels.
+     */
+    if (flags & ASN1_TFLG_TAG_MASK) {
+        /* Error if argument and template tagging */
+        if (tag != -1)
+            /* FIXME: error code here */
+            return -1;
+        /* Get tagging from template */
+        ttag = tt->tag;
+        tclass = flags & ASN1_TFLG_TAG_CLASS;
+    } else if (tag != -1) {
+        /* No template tagging, get from arguments */
+        ttag = tag;
+        tclass = iclass & ASN1_TFLG_TAG_CLASS;
+    } else {
+        ttag = -1;
+        tclass = 0;
+    }
+    /*
+     * Remove any class mask from iflag.
+     */
+    iclass &= ~ASN1_TFLG_TAG_CLASS;
+
+    /*
+     * At this point 'ttag' contains the outer tag to use, 'tclass' is the
+     * class and iclass is any flags passed to this function.
+     */
+
+    /* if template and arguments require ndef, use it */
+    if ((flags & ASN1_TFLG_NDEF) && (iclass & ASN1_TFLG_NDEF))
+        ndef = 2;
+    else
+        ndef = 1;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
+        int isset, sktag, skaclass;
+        int skcontlen, sklen;
+        ASN1_VALUE *skitem;
+
+        if (!*pval)
+            return 0;
+
+        if (flags & ASN1_TFLG_SET_OF) {
+            isset = 1;
+            /* 2 means we reorder */
+            if (flags & ASN1_TFLG_SEQUENCE_OF)
+                isset = 2;
+        } else
+            isset = 0;
+
+        /*
+         * Work out inner tag value: if EXPLICIT or no tagging use underlying
+         * type.
+         */
+        if ((ttag != -1) && !(flags & ASN1_TFLG_EXPTAG)) {
+            sktag = ttag;
+            skaclass = tclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (isset)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+
+        /* Determine total length of items */
+        skcontlen = 0;
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            skitem = sk_ASN1_VALUE_value(sk, i);
+            skcontlen += ASN1_item_ex_i2d(&skitem, NULL,
+                                          ASN1_ITEM_ptr(tt->item),
+                                          -1, iclass);
+        }
+        sklen = ASN1_object_size(ndef, skcontlen, sktag);
+        /* If EXPLICIT need length of surrounding tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ret = ASN1_object_size(ndef, sklen, ttag);
+        else
+            ret = sklen;
+
+        if (!out)
+            return ret;
+
+        /* Now encode this lot... */
+        /* EXPLICIT tag */
+        if (flags & ASN1_TFLG_EXPTAG)
+            ASN1_put_object(out, ndef, sklen, ttag, tclass);
+        /* SET or SEQUENCE and IMPLICIT tag */
+        ASN1_put_object(out, ndef, skcontlen, sktag, skaclass);
+        /* And the stuff itself */
+        asn1_set_seq_out(sk, out, skcontlen, ASN1_ITEM_ptr(tt->item),
+                         isset, iclass);
+        if (ndef == 2) {
+            ASN1_put_eoc(out);
+            if (flags & ASN1_TFLG_EXPTAG)
+                ASN1_put_eoc(out);
+        }
+
+        return ret;
+    }
+
+    if (flags & ASN1_TFLG_EXPTAG) {
+        /* EXPLICIT tagging */
+        /* Find length of tagged item */
+        i = ASN1_item_ex_i2d(pval, NULL, ASN1_ITEM_ptr(tt->item), -1, iclass);
+        if (!i)
+            return 0;
+        /* Find length of EXPLICIT tag */
+        ret = ASN1_object_size(ndef, i, ttag);
+        if (out) {
+            /* Output tag and item */
+            ASN1_put_object(out, ndef, i, ttag, tclass);
+            ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item), -1, iclass);
+            if (ndef == 2)
+                ASN1_put_eoc(out);
+        }
+        return ret;
+    }
+
+    /* Either normal or IMPLICIT tagging: combine class and flags */
+    return ASN1_item_ex_i2d(pval, out, ASN1_ITEM_ptr(tt->item),
+                            ttag, tclass | iclass);
 
 }
 
 /* Temporary structure used to hold DER encoding of items for SET OF */
 
-typedef	struct {
-	unsigned char *data;
-	int length;
-	ASN1_VALUE *field;
+typedef struct {
+    unsigned char *data;
+    int length;
+    ASN1_VALUE *field;
 } DER_ENC;
 
 static int der_cmp(const void *a, const void *b)
-	{
-	const DER_ENC *d1 = a, *d2 = b;
-	int cmplen, i;
-	cmplen = (d1->length < d2->length) ? d1->length : d2->length;
-	i = memcmp(d1->data, d2->data, cmplen);
-	if (i)
-		return i;
-	return d1->length - d2->length;
-	}
+{
+    const DER_ENC *d1 = a, *d2 = b;
+    int cmplen, i;
+    cmplen = (d1->length < d2->length) ? d1->length : d2->length;
+    i = memcmp(d1->data, d2->data, cmplen);
+    if (i)
+        return i;
+    return d1->length - d2->length;
+}
 
 /* Output the content octets of SET OF or SEQUENCE OF */
 
 static int asn1_set_seq_out(STACK_OF(ASN1_VALUE) *sk, unsigned char **out,
-					int skcontlen, const ASN1_ITEM *item,
-					int do_sort, int iclass)
-	{
-	int i;
-	ASN1_VALUE *skitem;
-	unsigned char *tmpdat = NULL, *p = NULL;
-	DER_ENC *derlst = NULL, *tder;
-	if (do_sort)
-		 {
-		/* Don't need to sort less than 2 items */
-		if (sk_ASN1_VALUE_num(sk) < 2)
-			do_sort = 0;
-		else
-			{
-			derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
-						* sizeof(*derlst));
-			if (!derlst)
-				return 0;
-			tmpdat = OPENSSL_malloc(skcontlen);
-			if (!tmpdat)
-				{
-				OPENSSL_free(derlst);
-				return 0;
-				}
-			}
-		}
-	/* If not sorting just output each item */
-	if (!do_sort)
-		{
-		for (i = 0; i < sk_ASN1_VALUE_num(sk); i++)
-			{
-			skitem = sk_ASN1_VALUE_value(sk, i);
-			ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
-			}
-		return 1;
-		}
-	p = tmpdat;
-
-	/* Doing sort: build up a list of each member's DER encoding */
-	for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
-		{
-		skitem = sk_ASN1_VALUE_value(sk, i);
-		tder->data = p;
-		tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
-		tder->field = skitem;
-		}
-
-	/* Now sort them */
-	qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
-	/* Output sorted DER encoding */	
-	p = *out;
-	for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
-		{
-		memcpy(p, tder->data, tder->length);
-		p += tder->length;
-		}
-	*out = p;
-	/* If do_sort is 2 then reorder the STACK */
-	if (do_sort == 2)
-		{
-		for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk);
-							i++, tder++)
-			(void)sk_ASN1_VALUE_set(sk, i, tder->field);
-		}
-	OPENSSL_free(derlst);
-	OPENSSL_free(tmpdat);
-	return 1;
-	}
+                            int skcontlen, const ASN1_ITEM *item,
+                            int do_sort, int iclass)
+{
+    int i;
+    ASN1_VALUE *skitem;
+    unsigned char *tmpdat = NULL, *p = NULL;
+    DER_ENC *derlst = NULL, *tder;
+    if (do_sort) {
+        /* Don't need to sort less than 2 items */
+        if (sk_ASN1_VALUE_num(sk) < 2)
+            do_sort = 0;
+        else {
+            derlst = OPENSSL_malloc(sk_ASN1_VALUE_num(sk)
+                                    * sizeof(*derlst));
+            if (!derlst)
+                return 0;
+            tmpdat = OPENSSL_malloc(skcontlen);
+            if (!tmpdat) {
+                OPENSSL_free(derlst);
+                return 0;
+            }
+        }
+    }
+    /* If not sorting just output each item */
+    if (!do_sort) {
+        for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
+            skitem = sk_ASN1_VALUE_value(sk, i);
+            ASN1_item_ex_i2d(&skitem, out, item, -1, iclass);
+        }
+        return 1;
+    }
+    p = tmpdat;
+
+    /* Doing sort: build up a list of each member's DER encoding */
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        skitem = sk_ASN1_VALUE_value(sk, i);
+        tder->data = p;
+        tder->length = ASN1_item_ex_i2d(&skitem, &p, item, -1, iclass);
+        tder->field = skitem;
+    }
+
+    /* Now sort them */
+    qsort(derlst, sk_ASN1_VALUE_num(sk), sizeof(*derlst), der_cmp);
+    /* Output sorted DER encoding */
+    p = *out;
+    for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++) {
+        memcpy(p, tder->data, tder->length);
+        p += tder->length;
+    }
+    *out = p;
+    /* If do_sort is 2 then reorder the STACK */
+    if (do_sort == 2) {
+        for (i = 0, tder = derlst; i < sk_ASN1_VALUE_num(sk); i++, tder++)
+            (void)sk_ASN1_VALUE_set(sk, i, tder->field);
+    }
+    OPENSSL_free(derlst);
+    OPENSSL_free(tmpdat);
+    return 1;
+}
 
 static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
-				const ASN1_ITEM *it, int tag, int aclass)
-	{
-	int len;
-	int utype;
-	int usetag;
-	int ndef = 0;
-
-	utype = it->utype;
-
-	/* Get length of content octets and maybe find
-	 * out the underlying type.
-	 */
-
-	len = asn1_ex_i2c(pval, NULL, &utype, it);
-
-	/* If SEQUENCE, SET or OTHER then header is
-	 * included in pseudo content octets so don't
-	 * include tag+length. We need to check here
-	 * because the call to asn1_ex_i2c() could change
-	 * utype.
-	 */
-	if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
-	   (utype == V_ASN1_OTHER))
-		usetag = 0;
-	else usetag = 1;
-
-	/* -1 means omit type */
-
-	if (len == -1)
-		return 0;
-
-	/* -2 return is special meaning use ndef */
-	if (len == -2)
-		{
-		ndef = 2;
-		len = 0;
-		}
-
-	/* If not implicitly tagged get tag from underlying type */
-	if (tag == -1) tag = utype;
-
-	/* Output tag+length followed by content octets */
-	if (out)
-		{
-		if (usetag)
-			ASN1_put_object(out, ndef, len, tag, aclass);
-		asn1_ex_i2c(pval, *out, &utype, it);
-		if (ndef)
-			ASN1_put_eoc(out);
-		else
-			*out += len;
-		}
-
-	if (usetag)
-		return ASN1_object_size(ndef, len, tag);
-	return len;
-	}
+                                 const ASN1_ITEM *it, int tag, int aclass)
+{
+    int len;
+    int utype;
+    int usetag;
+    int ndef = 0;
+
+    utype = it->utype;
+
+    /*
+     * Get length of content octets and maybe find out the underlying type.
+     */
+
+    len = asn1_ex_i2c(pval, NULL, &utype, it);
+
+    /*
+     * If SEQUENCE, SET or OTHER then header is included in pseudo content
+     * octets so don't include tag+length. We need to check here because the
+     * call to asn1_ex_i2c() could change utype.
+     */
+    if ((utype == V_ASN1_SEQUENCE) || (utype == V_ASN1_SET) ||
+        (utype == V_ASN1_OTHER))
+        usetag = 0;
+    else
+        usetag = 1;
+
+    /* -1 means omit type */
+
+    if (len == -1)
+        return 0;
+
+    /* -2 return is special meaning use ndef */
+    if (len == -2) {
+        ndef = 2;
+        len = 0;
+    }
+
+    /* If not implicitly tagged get tag from underlying type */
+    if (tag == -1)
+        tag = utype;
+
+    /* Output tag+length followed by content octets */
+    if (out) {
+        if (usetag)
+            ASN1_put_object(out, ndef, len, tag, aclass);
+        asn1_ex_i2c(pval, *out, &utype, it);
+        if (ndef)
+            ASN1_put_eoc(out);
+        else
+            *out += len;
+    }
+
+    if (usetag)
+        return ASN1_object_size(ndef, len, tag);
+    return len;
+}
 
 /* Produce content octets from a structure */
 
 int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cout, int *putype,
-				const ASN1_ITEM *it)
-	{
-	ASN1_BOOLEAN *tbool = NULL;
-	ASN1_STRING *strtmp;
-	ASN1_OBJECT *otmp;
-	int utype;
-	const unsigned char *cont;
-	unsigned char c;
-	int len;
-	const ASN1_PRIMITIVE_FUNCS *pf;
-	pf = it->funcs;
-	if (pf && pf->prim_i2c)
-		return pf->prim_i2c(pval, cout, putype, it);
-
-	/* Should type be omitted? */
-	if ((it->itype != ASN1_ITYPE_PRIMITIVE)
-		|| (it->utype != V_ASN1_BOOLEAN))
-		{
-		if (!*pval) return -1;
-		}
-
-	if (it->itype == ASN1_ITYPE_MSTRING)
-		{
-		/* If MSTRING type set the underlying type */
-		strtmp = (ASN1_STRING *)*pval;
-		utype = strtmp->type;
-		*putype = utype;
-		}
-	else if (it->utype == V_ASN1_ANY)
-		{
-		/* If ANY set type and pointer to value */
-		ASN1_TYPE *typ;
-		typ = (ASN1_TYPE *)*pval;
-		utype = typ->type;
-		*putype = utype;
-		pval = &typ->value.asn1_value;
-		}
-	else utype = *putype;
-
-	switch(utype)
-		{
-		case V_ASN1_OBJECT:
-		otmp = (ASN1_OBJECT *)*pval;
-		cont = otmp->data;
-		len = otmp->length;
-		break;
-
-		case V_ASN1_NULL:
-		cont = NULL;
-		len = 0;
-		break;
-
-		case V_ASN1_BOOLEAN:
-		tbool = (ASN1_BOOLEAN *)pval;
-		if (*tbool == -1)
-			return -1;
-		if (it->utype != V_ASN1_ANY)
-			{
-			/* Default handling if value == size field then omit */
-			if (*tbool && (it->size > 0))
-				return -1;
-			if (!*tbool && !it->size)
-				return -1;
-			}
-		c = (unsigned char)*tbool;
-		cont = &c;
-		len = 1;
-		break;
-
-		case V_ASN1_BIT_STRING:
-		return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
-							cout ? &cout : NULL);
-		break;
-
-		case V_ASN1_INTEGER:
-		case V_ASN1_NEG_INTEGER:
-		case V_ASN1_ENUMERATED:
-		case V_ASN1_NEG_ENUMERATED:
-		/* These are all have the same content format
-		 * as ASN1_INTEGER
-		 */
-		return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval,
-							cout ? &cout : NULL);
-		break;
-
-		case V_ASN1_OCTET_STRING:
-		case V_ASN1_NUMERICSTRING:
-		case V_ASN1_PRINTABLESTRING:
-		case V_ASN1_T61STRING:
-		case V_ASN1_VIDEOTEXSTRING:
-		case V_ASN1_IA5STRING:
-		case V_ASN1_UTCTIME:
-		case V_ASN1_GENERALIZEDTIME:
-		case V_ASN1_GRAPHICSTRING:
-		case V_ASN1_VISIBLESTRING:
-		case V_ASN1_GENERALSTRING:
-		case V_ASN1_UNIVERSALSTRING:
-		case V_ASN1_BMPSTRING:
-		case V_ASN1_UTF8STRING:
-		case V_ASN1_SEQUENCE:
-		case V_ASN1_SET:
-		default:
-		/* All based on ASN1_STRING and handled the same */
-		strtmp = (ASN1_STRING *)*pval;
-		/* Special handling for NDEF */
-		if ((it->size == ASN1_TFLG_NDEF)
-			&& (strtmp->flags & ASN1_STRING_FLAG_NDEF))
-			{
-			if (cout)
-				{
-				strtmp->data = cout;
-				strtmp->length = 0;
-				}
-			/* Special return code */
-			return -2;
-			}
-		cont = strtmp->data;
-		len = strtmp->length;
-
-		break;
-
-		}
-	if (cout && len)
-		memcpy(cout, cont, len);
-	return len;
-	}
+                const ASN1_ITEM *it)
+{
+    ASN1_BOOLEAN *tbool = NULL;
+    ASN1_STRING *strtmp;
+    ASN1_OBJECT *otmp;
+    int utype;
+    const unsigned char *cont;
+    unsigned char c;
+    int len;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    pf = it->funcs;
+    if (pf && pf->prim_i2c)
+        return pf->prim_i2c(pval, cout, putype, it);
+
+    /* Should type be omitted? */
+    if ((it->itype != ASN1_ITYPE_PRIMITIVE)
+        || (it->utype != V_ASN1_BOOLEAN)) {
+        if (!*pval)
+            return -1;
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        /* If MSTRING type set the underlying type */
+        strtmp = (ASN1_STRING *)*pval;
+        utype = strtmp->type;
+        *putype = utype;
+    } else if (it->utype == V_ASN1_ANY) {
+        /* If ANY set type and pointer to value */
+        ASN1_TYPE *typ;
+        typ = (ASN1_TYPE *)*pval;
+        utype = typ->type;
+        *putype = utype;
+        pval = &typ->value.asn1_value;
+    } else
+        utype = *putype;
+
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        otmp = (ASN1_OBJECT *)*pval;
+        cont = otmp->data;
+        len = otmp->length;
+        break;
+
+    case V_ASN1_NULL:
+        cont = NULL;
+        len = 0;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        tbool = (ASN1_BOOLEAN *)pval;
+        if (*tbool == -1)
+            return -1;
+        if (it->utype != V_ASN1_ANY) {
+            /*
+             * Default handling if value == size field then omit
+             */
+            if (*tbool && (it->size > 0))
+                return -1;
+            if (!*tbool && !it->size)
+                return -1;
+        }
+        c = (unsigned char)*tbool;
+        cont = &c;
+        len = 1;
+        break;
+
+    case V_ASN1_BIT_STRING:
+        return i2c_ASN1_BIT_STRING((ASN1_BIT_STRING *)*pval,
+                                   cout ? &cout : NULL);
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_NEG_INTEGER:
+    case V_ASN1_ENUMERATED:
+    case V_ASN1_NEG_ENUMERATED:
+        /*
+         * These are all have the same content format as ASN1_INTEGER
+         */
+        return i2c_ASN1_INTEGER((ASN1_INTEGER *)*pval, cout ? &cout : NULL);
+        break;
+
+    case V_ASN1_OCTET_STRING:
+    case V_ASN1_NUMERICSTRING:
+    case V_ASN1_PRINTABLESTRING:
+    case V_ASN1_T61STRING:
+    case V_ASN1_VIDEOTEXSTRING:
+    case V_ASN1_IA5STRING:
+    case V_ASN1_UTCTIME:
+    case V_ASN1_GENERALIZEDTIME:
+    case V_ASN1_GRAPHICSTRING:
+    case V_ASN1_VISIBLESTRING:
+    case V_ASN1_GENERALSTRING:
+    case V_ASN1_UNIVERSALSTRING:
+    case V_ASN1_BMPSTRING:
+    case V_ASN1_UTF8STRING:
+    case V_ASN1_SEQUENCE:
+    case V_ASN1_SET:
+    default:
+        /* All based on ASN1_STRING and handled the same */
+        strtmp = (ASN1_STRING *)*pval;
+        /* Special handling for NDEF */
+        if ((it->size == ASN1_TFLG_NDEF)
+            && (strtmp->flags & ASN1_STRING_FLAG_NDEF)) {
+            if (cout) {
+                strtmp->data = cout;
+                strtmp->length = 0;
+            }
+            /* Special return code */
+            return -2;
+        }
+        cont = strtmp->data;
+        len = strtmp->length;
+
+        break;
+
+    }
+    if (cout && len)
+        memcpy(cout, cont, len);
+    return len;
+}