Update openssl to version openssl-1.0.1m

Conflicts:
	openssl/Makefile
	openssl/Makefile.bak
	openssl/crypto/cryptlib.c

1 files changed, 1106 insertions, 1233 deletions

diff --git a/openssl/crypto/asn1/tasn_dec.c b/openssl/crypto/asn1/tasn_dec.c
index 2cbfa8147..7fd336a40 100644
--- a/openssl/crypto/asn1/tasn_dec.c
+++ b/openssl/crypto/asn1/tasn_dec.c
@@ -1,6 +1,7 @@
 /* tasn_dec.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) 2000-2005 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 <openssl/asn1.h>
@@ -69,1287 +69,1160 @@ static int asn1_check_eoc(const unsigned char **in, long len);
 static int asn1_find_end(const unsigned char **in, long len, char inf);
 
 static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
-			char inf, int tag, int aclass, int depth);
+                        char inf, int tag, int aclass, int depth);
 
 static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen);
 
 static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
-				char *inf, char *cst,
-				const unsigned char **in, long len,
-				int exptag, int expclass, char opt,
-				ASN1_TLC *ctx);
+                           char *inf, char *cst,
+                           const unsigned char **in, long len,
+                           int exptag, int expclass, char opt, ASN1_TLC *ctx);
 
 static int asn1_template_ex_d2i(ASN1_VALUE **pval,
-				const unsigned char **in, long len,
-				const ASN1_TEMPLATE *tt, char opt,
-				ASN1_TLC *ctx);
+                                const unsigned char **in, long len,
+                                const ASN1_TEMPLATE *tt, char opt,
+                                ASN1_TLC *ctx);
 static int asn1_template_noexp_d2i(ASN1_VALUE **val,
-				const unsigned char **in, long len,
-				const ASN1_TEMPLATE *tt, char opt,
-				ASN1_TLC *ctx);
+                                   const unsigned char **in, long len,
+                                   const ASN1_TEMPLATE *tt, char opt,
+                                   ASN1_TLC *ctx);
 static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
-				const unsigned char **in, long len,
-				const ASN1_ITEM *it,
-				int tag, int aclass, char opt, ASN1_TLC *ctx);
+                                 const unsigned char **in, long len,
+                                 const ASN1_ITEM *it,
+                                 int tag, int aclass, char opt,
+                                 ASN1_TLC *ctx);
 
 /* Table to convert tags to bit values, used for MSTRING type */
 static const unsigned long tag2bit[32] = {
-0,	0,	0,	B_ASN1_BIT_STRING,	/* tags  0 -  3 */
-B_ASN1_OCTET_STRING,	0,	0,		B_ASN1_UNKNOWN,/* tags  4- 7 */
-B_ASN1_UNKNOWN,	B_ASN1_UNKNOWN,	B_ASN1_UNKNOWN,	B_ASN1_UNKNOWN,/* tags  8-11 */
-B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */
-B_ASN1_SEQUENCE,0,B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING, /* tags 16-19 */
-B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING,       /* tags 20-22 */
-B_ASN1_UTCTIME, B_ASN1_GENERALIZEDTIME,			       /* tags 23-24 */	
-B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING,  /* tags 25-27 */
-B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN, /* tags 28-31 */
-	};
+    /* tags  0 -  3 */
+    0, 0, 0, B_ASN1_BIT_STRING,
+    /* tags  4- 7 */
+    B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,
+    /* tags  8-11 */
+    B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,
+    /* tags 12-15 */
+    B_ASN1_UTF8STRING, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,
+    /* tags 16-19 */
+    B_ASN1_SEQUENCE, 0, B_ASN1_NUMERICSTRING, B_ASN1_PRINTABLESTRING,
+    /* tags 20-22 */
+    B_ASN1_T61STRING, B_ASN1_VIDEOTEXSTRING, B_ASN1_IA5STRING,
+    /* tags 23-24 */
+    B_ASN1_UTCTIME, B_ASN1_GENERALIZEDTIME,
+    /* tags 25-27 */
+    B_ASN1_GRAPHICSTRING, B_ASN1_ISO64STRING, B_ASN1_GENERALSTRING,
+    /* tags 28-31 */
+    B_ASN1_UNIVERSALSTRING, B_ASN1_UNKNOWN, B_ASN1_BMPSTRING, B_ASN1_UNKNOWN,
+};
 
 unsigned long ASN1_tag2bit(int tag)
-	{
-	if ((tag < 0) || (tag > 30)) return 0;
-	return tag2bit[tag];
-	}
+{
+    if ((tag < 0) || (tag > 30))
+        return 0;
+    return tag2bit[tag];
+}
 
 /* Macro to initialize and invalidate the cache */
 
-#define asn1_tlc_clear(c)	if (c) (c)->valid = 0
+#define asn1_tlc_clear(c)       if (c) (c)->valid = 0
 /* Version to avoid compiler warning about 'c' always non-NULL */
-#define asn1_tlc_clear_nc(c)	(c)->valid = 0
-
-/* Decode an ASN1 item, this currently behaves just 
- * like a standard 'd2i' function. 'in' points to 
- * a buffer to read the data from, in future we will
- * have more advanced versions that can input data
- * a piece at a time and this will simply be a special
- * case.
+#define asn1_tlc_clear_nc(c)    (c)->valid = 0
+
+/*
+ * Decode an ASN1 item, this currently behaves just like a standard 'd2i'
+ * function. 'in' points to a buffer to read the data from, in future we
+ * will have more advanced versions that can input data a piece at a time and
+ * this will simply be a special case.
  */
 
 ASN1_VALUE *ASN1_item_d2i(ASN1_VALUE **pval,
-		const unsigned char **in, long len, const ASN1_ITEM *it)
-	{
-	ASN1_TLC c;
-	ASN1_VALUE *ptmpval = NULL;
-	if (!pval)
-		pval = &ptmpval;
-	asn1_tlc_clear_nc(&c);
-	if (ASN1_item_ex_d2i(pval, in, len, it, -1, 0, 0, &c) > 0) 
-		return *pval;
-	return NULL;
-	}
+                          const unsigned char **in, long len,
+                          const ASN1_ITEM *it)
+{
+    ASN1_TLC c;
+    ASN1_VALUE *ptmpval = NULL;
+    if (!pval)
+        pval = &ptmpval;
+    asn1_tlc_clear_nc(&c);
+    if (ASN1_item_ex_d2i(pval, in, len, it, -1, 0, 0, &c) > 0)
+        return *pval;
+    return NULL;
+}
 
 int ASN1_template_d2i(ASN1_VALUE **pval,
-		const unsigned char **in, long len, const ASN1_TEMPLATE *tt)
-	{
-	ASN1_TLC c;
-	asn1_tlc_clear_nc(&c);
-	return asn1_template_ex_d2i(pval, in, len, tt, 0, &c);
-	}
-
-
-/* Decode an item, taking care of IMPLICIT tagging, if any.
- * If 'opt' set and tag mismatch return -1 to handle OPTIONAL
+                      const unsigned char **in, long len,
+                      const ASN1_TEMPLATE *tt)
+{
+    ASN1_TLC c;
+    asn1_tlc_clear_nc(&c);
+    return asn1_template_ex_d2i(pval, in, len, tt, 0, &c);
+}
+
+/*
+ * Decode an item, taking care of IMPLICIT tagging, if any. If 'opt' set and
+ * tag mismatch return -1 to handle OPTIONAL
  */
 
 int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
-			const ASN1_ITEM *it,
-			int tag, int aclass, char opt, ASN1_TLC *ctx)
-	{
-	const ASN1_TEMPLATE *tt, *errtt = NULL;
-	const ASN1_COMPAT_FUNCS *cf;
-	const ASN1_EXTERN_FUNCS *ef;
-	const ASN1_AUX *aux = it->funcs;
-	ASN1_aux_cb *asn1_cb;
-	const unsigned char *p = NULL, *q;
-	unsigned char *wp=NULL;	/* BIG FAT WARNING!  BREAKS CONST WHERE USED */
-	unsigned char imphack = 0, oclass;
-	char seq_eoc, seq_nolen, cst, isopt;
-	long tmplen;
-	int i;
-	int otag;
-	int ret = 0;
-	ASN1_VALUE **pchptr, *ptmpval;
-	if (!pval)
-		return 0;
-	if (aux && aux->asn1_cb)
-		asn1_cb = aux->asn1_cb;
-	else asn1_cb = 0;
-
-	switch(it->itype)
-		{
-		case ASN1_ITYPE_PRIMITIVE:
-		if (it->templates)
-			{
-			/* tagging or OPTIONAL is currently illegal on an item
-			 * template because the flags can't get passed down.
-			 * In practice this isn't a problem: we include the
-			 * relevant flags from the item template in the
-			 * template itself.
-			 */
-			if ((tag != -1) || opt)
-				{
-				ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-				ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
-				goto err;
-				}
-			return asn1_template_ex_d2i(pval, in, len,
-					it->templates, opt, ctx);
-		}
-		return asn1_d2i_ex_primitive(pval, in, len, it,
-						tag, aclass, opt, ctx);
-		break;
-
-		case ASN1_ITYPE_MSTRING:
-		p = *in;
-		/* Just read in tag and class */
-		ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
-						&p, len, -1, 0, 1, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-
-		/* Must be UNIVERSAL class */
-		if (oclass != V_ASN1_UNIVERSAL)
-			{
-			/* If OPTIONAL, assume this is OK */
-			if (opt) return -1;
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ASN1_R_MSTRING_NOT_UNIVERSAL);
-			goto err;
-			}
-		/* Check tag matches bit map */
-		if (!(ASN1_tag2bit(otag) & it->utype))
-			{
-			/* If OPTIONAL, assume this is OK */
-			if (opt)
-				return -1;
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ASN1_R_MSTRING_WRONG_TAG);
-			goto err;
-			}
-		return asn1_d2i_ex_primitive(pval, in, len,
-						it, otag, 0, 0, ctx);
-
-		case ASN1_ITYPE_EXTERN:
-		/* Use new style d2i */
-		ef = it->funcs;
-		return ef->asn1_ex_d2i(pval, in, len,
-						it, tag, aclass, opt, ctx);
-
-		case ASN1_ITYPE_COMPAT:
-		/* we must resort to old style evil hackery */
-		cf = it->funcs;
-
-		/* If OPTIONAL see if it is there */
-		if (opt)
-			{
-			int exptag;
-			p = *in;
-			if (tag == -1)
-				exptag = it->utype;
-			else exptag = tag;
-			/* Don't care about anything other than presence
-			 * of expected tag */
-
-			ret = asn1_check_tlen(NULL, NULL, NULL, NULL, NULL,
-					&p, len, exptag, aclass, 1, ctx);
-			if (!ret)
-				{
-				ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-				goto err;
-				}
-			if (ret == -1)
-				return -1;
-			}
-
-		/* This is the old style evil hack IMPLICIT handling:
-		 * since the underlying code is expecting a tag and
-		 * class other than the one present we change the
-		 * buffer temporarily then change it back afterwards.
-		 * This doesn't and never did work for tags > 30.
-		 *
-		 * Yes this is *horrible* but it is only needed for
-		 * old style d2i which will hopefully not be around
-		 * for much longer.
-		 * FIXME: should copy the buffer then modify it so
-		 * the input buffer can be const: we should *always*
-		 * copy because the old style d2i might modify the
-		 * buffer.
-		 */
-
-		if (tag != -1)
-			{
-			wp = *(unsigned char **)in;
-			imphack = *wp;
-			if (p == NULL)
-				{
-				ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-				goto err;
-				}
-			*wp = (unsigned char)((*p & V_ASN1_CONSTRUCTED)
-								| it->utype);
-			}
-
-		ptmpval = cf->asn1_d2i(pval, in, len);
-
-		if (tag != -1)
-			*wp = imphack;
-
-		if (ptmpval)
-			return 1;
-
-		ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
-		goto err;
-
-
-		case ASN1_ITYPE_CHOICE:
-		if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
-				goto auxerr;
-
-		/* Allocate structure */
-		if (!*pval && !ASN1_item_ex_new(pval, it))
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-						ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-		/* CHOICE type, try each possibility in turn */
-		p = *in;
-		for (i = 0, tt=it->templates; i < it->tcount; i++, tt++)
-			{
-			pchptr = asn1_get_field_ptr(pval, tt);
-			/* We mark field as OPTIONAL so its absence
-			 * can be recognised.
-			 */
-			ret = asn1_template_ex_d2i(pchptr, &p, len, tt, 1, ctx);
-			/* If field not present, try the next one */
-			if (ret == -1)
-				continue;
-			/* If positive return, read OK, break loop */
-			if (ret > 0)
-				break;
-			/* Otherwise must be an ASN1 parsing error */
-			errtt = tt;
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-						ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-
-		/* Did we fall off the end without reading anything? */
-		if (i == it->tcount)
-			{
-			/* If OPTIONAL, this is OK */
-			if (opt)
-				{
-				/* Free and zero it */
-				ASN1_item_ex_free(pval, it);
-				return -1;
-				}
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ASN1_R_NO_MATCHING_CHOICE_TYPE);
-			goto err;
-			}
-
-		asn1_set_choice_selector(pval, i, it);
-		*in = p;
-		if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
-				goto auxerr;
-		return 1;
-
-		case ASN1_ITYPE_NDEF_SEQUENCE:
-		case ASN1_ITYPE_SEQUENCE:
-		p = *in;
-		tmplen = len;
-
-		/* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
-		if (tag == -1)
-			{
-			tag = V_ASN1_SEQUENCE;
-			aclass = V_ASN1_UNIVERSAL;
-			}
-		/* Get SEQUENCE length and update len, p */
-		ret = asn1_check_tlen(&len, NULL, NULL, &seq_eoc, &cst,
-					&p, len, tag, aclass, opt, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-		else if (ret == -1)
-			return -1;
-		if (aux && (aux->flags & ASN1_AFLG_BROKEN))
-			{
-			len = tmplen - (p - *in);
-			seq_nolen = 1;
-			}
-		/* If indefinite we don't do a length check */
-		else seq_nolen = seq_eoc;
-		if (!cst)
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-				ASN1_R_SEQUENCE_NOT_CONSTRUCTED);
-			goto err;
-			}
-
-		if (!*pval && !ASN1_item_ex_new(pval, it))
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-				ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-
-		if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
-				goto auxerr;
-
-		/* Get each field entry */
-		for (i = 0, tt = it->templates; i < it->tcount; i++, tt++)
-			{
-			const ASN1_TEMPLATE *seqtt;
-			ASN1_VALUE **pseqval;
-			seqtt = asn1_do_adb(pval, tt, 1);
-			if (!seqtt)
-				goto err;
-			pseqval = asn1_get_field_ptr(pval, seqtt);
-			/* Have we ran out of data? */
-			if (!len)
-				break;
-			q = p;
-			if (asn1_check_eoc(&p, len))
-				{
-				if (!seq_eoc)
-					{
-					ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-							ASN1_R_UNEXPECTED_EOC);
-					goto err;
-					}
-				len -= p - q;
-				seq_eoc = 0;
-				q = p;
-				break;
-				}
-			/* This determines the OPTIONAL flag value. The field
-			 * cannot be omitted if it is the last of a SEQUENCE
-			 * and there is still data to be read. This isn't
-			 * strictly necessary but it increases efficiency in
-			 * some cases.
-			 */
-			if (i == (it->tcount - 1))
-				isopt = 0;
-			else isopt = (char)(seqtt->flags & ASN1_TFLG_OPTIONAL);
-			/* attempt to read in field, allowing each to be
-			 * OPTIONAL */
-
-			ret = asn1_template_ex_d2i(pseqval, &p, len,
-							seqtt, isopt, ctx);
-			if (!ret)
-				{
-				errtt = seqtt;
-				goto err;
-				}
-			else if (ret == -1)
-				{
-				/* OPTIONAL component absent.
-				 * Free and zero the field.
-				 */
-				ASN1_template_free(pseqval, seqtt);
-				continue;
-				}
-			/* Update length */
-			len -= p - q;
-			}
-
-		/* Check for EOC if expecting one */
-		if (seq_eoc && !asn1_check_eoc(&p, len))
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MISSING_EOC);
-			goto err;
-			}
-		/* Check all data read */
-		if (!seq_nolen && len)
-			{
-			ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-					ASN1_R_SEQUENCE_LENGTH_MISMATCH);
-			goto err;
-			}
-
-		/* If we get here we've got no more data in the SEQUENCE,
-		 * however we may not have read all fields so check all
-		 * remaining are OPTIONAL and clear any that are.
-		 */
-		for (; i < it->tcount; tt++, i++)
-			{
-			const ASN1_TEMPLATE *seqtt;
-			seqtt = asn1_do_adb(pval, tt, 1);
-			if (!seqtt)
-				goto err;
-			if (seqtt->flags & ASN1_TFLG_OPTIONAL)
-				{
-				ASN1_VALUE **pseqval;
-				pseqval = asn1_get_field_ptr(pval, seqtt);
-				ASN1_template_free(pseqval, seqtt);
-				}
-			else
-				{
-				errtt = seqtt;
-				ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
-							ASN1_R_FIELD_MISSING);
-				goto err;
-				}
-			}
-		/* Save encoding */
-		if (!asn1_enc_save(pval, *in, p - *in, it))
-			goto auxerr;
-		*in = p;
-		if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
-				goto auxerr;
-		return 1;
-
-		default:
-		return 0;
-		}
-	auxerr:
-	ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_AUX_ERROR);
-	err:
-	ASN1_item_ex_free(pval, it);
-	if (errtt)
-		ERR_add_error_data(4, "Field=", errtt->field_name,
-					", Type=", it->sname);
-	else
-		ERR_add_error_data(2, "Type=", it->sname);
-	return 0;
-	}
-
-/* Templates are handled with two separate functions.
- * One handles any EXPLICIT tag and the other handles the rest.
+                     const ASN1_ITEM *it,
+                     int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+    const ASN1_TEMPLATE *tt, *errtt = NULL;
+    const ASN1_COMPAT_FUNCS *cf;
+    const ASN1_EXTERN_FUNCS *ef;
+    const ASN1_AUX *aux = it->funcs;
+    ASN1_aux_cb *asn1_cb;
+    const unsigned char *p = NULL, *q;
+    unsigned char *wp = NULL;   /* BIG FAT WARNING! BREAKS CONST WHERE USED */
+    unsigned char imphack = 0, oclass;
+    char seq_eoc, seq_nolen, cst, isopt;
+    long tmplen;
+    int i;
+    int otag;
+    int ret = 0;
+    ASN1_VALUE **pchptr, *ptmpval;
+    if (!pval)
+        return 0;
+    if (aux && aux->asn1_cb)
+        asn1_cb = aux->asn1_cb;
+    else
+        asn1_cb = 0;
+
+    switch (it->itype) {
+    case ASN1_ITYPE_PRIMITIVE:
+        if (it->templates) {
+            /*
+             * tagging or OPTIONAL is currently illegal on an item template
+             * because the flags can't get passed down. In practice this
+             * isn't a problem: we include the relevant flags from the item
+             * template in the template itself.
+             */
+            if ((tag != -1) || opt) {
+                ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
+                        ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
+                goto err;
+            }
+            return asn1_template_ex_d2i(pval, in, len,
+                                        it->templates, opt, ctx);
+        }
+        return asn1_d2i_ex_primitive(pval, in, len, it,
+                                     tag, aclass, opt, ctx);
+        break;
+
+    case ASN1_ITYPE_MSTRING:
+        p = *in;
+        /* Just read in tag and class */
+        ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
+                              &p, len, -1, 0, 1, ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        /* Must be UNIVERSAL class */
+        if (oclass != V_ASN1_UNIVERSAL) {
+            /* If OPTIONAL, assume this is OK */
+            if (opt)
+                return -1;
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MSTRING_NOT_UNIVERSAL);
+            goto err;
+        }
+        /* Check tag matches bit map */
+        if (!(ASN1_tag2bit(otag) & it->utype)) {
+            /* If OPTIONAL, assume this is OK */
+            if (opt)
+                return -1;
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MSTRING_WRONG_TAG);
+            goto err;
+        }
+        return asn1_d2i_ex_primitive(pval, in, len, it, otag, 0, 0, ctx);
+
+    case ASN1_ITYPE_EXTERN:
+        /* Use new style d2i */
+        ef = it->funcs;
+        return ef->asn1_ex_d2i(pval, in, len, it, tag, aclass, opt, ctx);
+
+    case ASN1_ITYPE_COMPAT:
+        /* we must resort to old style evil hackery */
+        cf = it->funcs;
+
+        /* If OPTIONAL see if it is there */
+        if (opt) {
+            int exptag;
+            p = *in;
+            if (tag == -1)
+                exptag = it->utype;
+            else
+                exptag = tag;
+            /*
+             * Don't care about anything other than presence of expected tag
+             */
+
+            ret = asn1_check_tlen(NULL, NULL, NULL, NULL, NULL,
+                                  &p, len, exptag, aclass, 1, ctx);
+            if (!ret) {
+                ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            if (ret == -1)
+                return -1;
+        }
+
+        /*
+         * This is the old style evil hack IMPLICIT handling: since the
+         * underlying code is expecting a tag and class other than the one
+         * present we change the buffer temporarily then change it back
+         * afterwards. This doesn't and never did work for tags > 30. Yes
+         * this is *horrible* but it is only needed for old style d2i which
+         * will hopefully not be around for much longer. FIXME: should copy
+         * the buffer then modify it so the input buffer can be const: we
+         * should *always* copy because the old style d2i might modify the
+         * buffer.
+         */
+
+        if (tag != -1) {
+            wp = *(unsigned char **)in;
+            imphack = *wp;
+            if (p == NULL) {
+                ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            *wp = (unsigned char)((*p & V_ASN1_CONSTRUCTED)
+                                  | it->utype);
+        }
+
+        ptmpval = cf->asn1_d2i(pval, in, len);
+
+        if (tag != -1)
+            *wp = imphack;
+
+        if (ptmpval)
+            return 1;
+
+        ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+        goto err;
+
+    case ASN1_ITYPE_CHOICE:
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
+            goto auxerr;
+        if (*pval) {
+            /* Free up and zero CHOICE value if initialised */
+            i = asn1_get_choice_selector(pval, it);
+            if ((i >= 0) && (i < it->tcount)) {
+                tt = it->templates + i;
+                pchptr = asn1_get_field_ptr(pval, tt);
+                ASN1_template_free(pchptr, tt);
+                asn1_set_choice_selector(pval, -1, it);
+            }
+        } else if (!ASN1_item_ex_new(pval, it)) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+        /* CHOICE type, try each possibility in turn */
+        p = *in;
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            pchptr = asn1_get_field_ptr(pval, tt);
+            /*
+             * We mark field as OPTIONAL so its absence can be recognised.
+             */
+            ret = asn1_template_ex_d2i(pchptr, &p, len, tt, 1, ctx);
+            /* If field not present, try the next one */
+            if (ret == -1)
+                continue;
+            /* If positive return, read OK, break loop */
+            if (ret > 0)
+                break;
+            /* Otherwise must be an ASN1 parsing error */
+            errtt = tt;
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        /* Did we fall off the end without reading anything? */
+        if (i == it->tcount) {
+            /* If OPTIONAL, this is OK */
+            if (opt) {
+                /* Free and zero it */
+                ASN1_item_ex_free(pval, it);
+                return -1;
+            }
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_NO_MATCHING_CHOICE_TYPE);
+            goto err;
+        }
+
+        asn1_set_choice_selector(pval, i, it);
+        *in = p;
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        return 1;
+
+    case ASN1_ITYPE_NDEF_SEQUENCE:
+    case ASN1_ITYPE_SEQUENCE:
+        p = *in;
+        tmplen = len;
+
+        /* If no IMPLICIT tagging set to SEQUENCE, UNIVERSAL */
+        if (tag == -1) {
+            tag = V_ASN1_SEQUENCE;
+            aclass = V_ASN1_UNIVERSAL;
+        }
+        /* Get SEQUENCE length and update len, p */
+        ret = asn1_check_tlen(&len, NULL, NULL, &seq_eoc, &cst,
+                              &p, len, tag, aclass, opt, ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+        if (aux && (aux->flags & ASN1_AFLG_BROKEN)) {
+            len = tmplen - (p - *in);
+            seq_nolen = 1;
+        }
+        /* If indefinite we don't do a length check */
+        else
+            seq_nolen = seq_eoc;
+        if (!cst) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_SEQUENCE_NOT_CONSTRUCTED);
+            goto err;
+        }
+
+        if (!*pval && !ASN1_item_ex_new(pval, it)) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        }
+
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
+            goto auxerr;
+
+        /* Free up and zero any ADB found */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            if (tt->flags & ASN1_TFLG_ADB_MASK) {
+                const ASN1_TEMPLATE *seqtt;
+                ASN1_VALUE **pseqval;
+                seqtt = asn1_do_adb(pval, tt, 1);
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            }
+        }
+
+        /* Get each field entry */
+        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
+            const ASN1_TEMPLATE *seqtt;
+            ASN1_VALUE **pseqval;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                goto err;
+            pseqval = asn1_get_field_ptr(pval, seqtt);
+            /* Have we ran out of data? */
+            if (!len)
+                break;
+            q = p;
+            if (asn1_check_eoc(&p, len)) {
+                if (!seq_eoc) {
+                    ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_UNEXPECTED_EOC);
+                    goto err;
+                }
+                len -= p - q;
+                seq_eoc = 0;
+                q = p;
+                break;
+            }
+            /*
+             * This determines the OPTIONAL flag value. The field cannot be
+             * omitted if it is the last of a SEQUENCE and there is still
+             * data to be read. This isn't strictly necessary but it
+             * increases efficiency in some cases.
+             */
+            if (i == (it->tcount - 1))
+                isopt = 0;
+            else
+                isopt = (char)(seqtt->flags & ASN1_TFLG_OPTIONAL);
+            /*
+             * attempt to read in field, allowing each to be OPTIONAL
+             */
+
+            ret = asn1_template_ex_d2i(pseqval, &p, len, seqtt, isopt, ctx);
+            if (!ret) {
+                errtt = seqtt;
+                goto err;
+            } else if (ret == -1) {
+                /*
+                 * OPTIONAL component absent. Free and zero the field.
+                 */
+                ASN1_template_free(pseqval, seqtt);
+                continue;
+            }
+            /* Update length */
+            len -= p - q;
+        }
+
+        /* Check for EOC if expecting one */
+        if (seq_eoc && !asn1_check_eoc(&p, len)) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_MISSING_EOC);
+            goto err;
+        }
+        /* Check all data read */
+        if (!seq_nolen && len) {
+            ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_SEQUENCE_LENGTH_MISMATCH);
+            goto err;
+        }
+
+        /*
+         * If we get here we've got no more data in the SEQUENCE, however we
+         * may not have read all fields so check all remaining are OPTIONAL
+         * and clear any that are.
+         */
+        for (; i < it->tcount; tt++, i++) {
+            const ASN1_TEMPLATE *seqtt;
+            seqtt = asn1_do_adb(pval, tt, 1);
+            if (!seqtt)
+                goto err;
+            if (seqtt->flags & ASN1_TFLG_OPTIONAL) {
+                ASN1_VALUE **pseqval;
+                pseqval = asn1_get_field_ptr(pval, seqtt);
+                ASN1_template_free(pseqval, seqtt);
+            } else {
+                errtt = seqtt;
+                ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_FIELD_MISSING);
+                goto err;
+            }
+        }
+        /* Save encoding */
+        if (!asn1_enc_save(pval, *in, p - *in, it))
+            goto auxerr;
+        *in = p;
+        if (asn1_cb && !asn1_cb(ASN1_OP_D2I_POST, pval, it, NULL))
+            goto auxerr;
+        return 1;
+
+    default:
+        return 0;
+    }
+ auxerr:
+    ASN1err(ASN1_F_ASN1_ITEM_EX_D2I, ASN1_R_AUX_ERROR);
+ err:
+    ASN1_item_ex_free(pval, it);
+    if (errtt)
+        ERR_add_error_data(4, "Field=", errtt->field_name,
+                           ", Type=", it->sname);
+    else
+        ERR_add_error_data(2, "Type=", it->sname);
+    return 0;
+}
+
+/*
+ * Templates are handled with two separate functions. One handles any
+ * EXPLICIT tag and the other handles the rest.
  */
 
 static int asn1_template_ex_d2i(ASN1_VALUE **val,
-				const unsigned char **in, long inlen,
-				const ASN1_TEMPLATE *tt, char opt,
-							ASN1_TLC *ctx)
-	{
-	int flags, aclass;
-	int ret;
-	long len;
-	const unsigned char *p, *q;
-	char exp_eoc;
-	if (!val)
-		return 0;
-	flags = tt->flags;
-	aclass = flags & ASN1_TFLG_TAG_CLASS;
-
-	p = *in;
-
-	/* Check if EXPLICIT tag expected */
-	if (flags & ASN1_TFLG_EXPTAG)
-		{
-		char cst;
-		/* Need to work out amount of data available to the inner
-		 * content and where it starts: so read in EXPLICIT header to
-		 * get the info.
-		 */
-		ret = asn1_check_tlen(&len, NULL, NULL, &exp_eoc, &cst,
-					&p, inlen, tt->tag, aclass, opt, ctx);
-		q = p;
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-			return 0;
-			}
-		else if (ret == -1)
-			return -1;
-		if (!cst)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
-					ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED);
-			return 0;
-			}
-		/* We've found the field so it can't be OPTIONAL now */
-		ret = asn1_template_noexp_d2i(val, &p, len, tt, 0, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-			return 0;
-			}
-		/* We read the field in OK so update length */
-		len -= p - q;
-		if (exp_eoc)
-			{
-			/* If NDEF we must have an EOC here */
-			if (!asn1_check_eoc(&p, len))
-				{
-				ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
-						ASN1_R_MISSING_EOC);
-				goto err;
-				}
-			}
-		else
-			{
-			/* Otherwise we must hit the EXPLICIT tag end or its
-			 * an error */
-			if (len)
-				{
-				ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
-					ASN1_R_EXPLICIT_LENGTH_MISMATCH);
-				goto err;
-				}
-			}
-		}
-		else 
-			return asn1_template_noexp_d2i(val, in, inlen,
-								tt, opt, ctx);
-
-	*in = p;
-	return 1;
-
-	err:
-	ASN1_template_free(val, tt);
-	return 0;
-	}
+                                const unsigned char **in, long inlen,
+                                const ASN1_TEMPLATE *tt, char opt,
+                                ASN1_TLC *ctx)
+{
+    int flags, aclass;
+    int ret;
+    long len;
+    const unsigned char *p, *q;
+    char exp_eoc;
+    if (!val)
+        return 0;
+    flags = tt->flags;
+    aclass = flags & ASN1_TFLG_TAG_CLASS;
+
+    p = *in;
+
+    /* Check if EXPLICIT tag expected */
+    if (flags & ASN1_TFLG_EXPTAG) {
+        char cst;
+        /*
+         * Need to work out amount of data available to the inner content and
+         * where it starts: so read in EXPLICIT header to get the info.
+         */
+        ret = asn1_check_tlen(&len, NULL, NULL, &exp_eoc, &cst,
+                              &p, inlen, tt->tag, aclass, opt, ctx);
+        q = p;
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            return 0;
+        } else if (ret == -1)
+            return -1;
+        if (!cst) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
+                    ASN1_R_EXPLICIT_TAG_NOT_CONSTRUCTED);
+            return 0;
+        }
+        /* We've found the field so it can't be OPTIONAL now */
+        ret = asn1_template_noexp_d2i(val, &p, len, tt, 0, ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        /* We read the field in OK so update length */
+        len -= p - q;
+        if (exp_eoc) {
+            /* If NDEF we must have an EOC here */
+            if (!asn1_check_eoc(&p, len)) {
+                ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I, ASN1_R_MISSING_EOC);
+                goto err;
+            }
+        } else {
+            /*
+             * Otherwise we must hit the EXPLICIT tag end or its an error
+             */
+            if (len) {
+                ASN1err(ASN1_F_ASN1_TEMPLATE_EX_D2I,
+                        ASN1_R_EXPLICIT_LENGTH_MISMATCH);
+                goto err;
+            }
+        }
+    } else
+        return asn1_template_noexp_d2i(val, in, inlen, tt, opt, ctx);
+
+    *in = p;
+    return 1;
+
+ err:
+    ASN1_template_free(val, tt);
+    return 0;
+}
 
 static int asn1_template_noexp_d2i(ASN1_VALUE **val,
-				const unsigned char **in, long len,
-				const ASN1_TEMPLATE *tt, char opt,
-				ASN1_TLC *ctx)
-	{
-	int flags, aclass;
-	int ret;
-	const unsigned char *p, *q;
-	if (!val)
-		return 0;
-	flags = tt->flags;
-	aclass = flags & ASN1_TFLG_TAG_CLASS;
-
-	p = *in;
-	q = p;
-
-	if (flags & ASN1_TFLG_SK_MASK)
-		{
-		/* SET OF, SEQUENCE OF */
-		int sktag, skaclass;
-		char sk_eoc;
-		/* First work out expected inner tag value */
-		if (flags & ASN1_TFLG_IMPTAG)
-			{
-			sktag = tt->tag;
-			skaclass = aclass;
-			}
-		else
-			{
-			skaclass = V_ASN1_UNIVERSAL;
-			if (flags & ASN1_TFLG_SET_OF)
-				sktag = V_ASN1_SET;
-			else
-				sktag = V_ASN1_SEQUENCE;
-			}
-		/* Get the tag */
-		ret = asn1_check_tlen(&len, NULL, NULL, &sk_eoc, NULL,
-					&p, len, sktag, skaclass, opt, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-						ERR_R_NESTED_ASN1_ERROR);
-			return 0;
-			}
-		else if (ret == -1)
-			return -1;
-		if (!*val)
-			*val = (ASN1_VALUE *)sk_new_null();
-		else
-			{
-			/* We've got a valid STACK: free up any items present */
-			STACK_OF(ASN1_VALUE) *sktmp
-			    = (STACK_OF(ASN1_VALUE) *)*val;
-			ASN1_VALUE *vtmp;
-			while(sk_ASN1_VALUE_num(sktmp) > 0)
-				{
-				vtmp = sk_ASN1_VALUE_pop(sktmp);
-				ASN1_item_ex_free(&vtmp,
-						ASN1_ITEM_ptr(tt->item));
-				}
-			}
-				
-		if (!*val)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-						ERR_R_MALLOC_FAILURE);
-			goto err;
-			}
-
-		/* Read as many items as we can */
-		while(len > 0)
-			{
-			ASN1_VALUE *skfield;
-			q = p;
-			/* See if EOC found */
-			if (asn1_check_eoc(&p, len))
-				{
-				if (!sk_eoc)
-					{
-					ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-							ASN1_R_UNEXPECTED_EOC);
-					goto err;
-					}
-				len -= p - q;
-				sk_eoc = 0;
-				break;
-				}
-			skfield = NULL;
-			if (!ASN1_item_ex_d2i(&skfield, &p, len,
-						ASN1_ITEM_ptr(tt->item),
-						-1, 0, 0, ctx))
-				{
-				ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-				goto err;
-				}
-			len -= p - q;
-			if (!sk_ASN1_VALUE_push((STACK_OF(ASN1_VALUE) *)*val,
-						skfield))
-				{
-				ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-						ERR_R_MALLOC_FAILURE);
-				goto err;
-				}
-			}
-		if (sk_eoc)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ASN1_R_MISSING_EOC);
-			goto err;
-			}
-		}
-	else if (flags & ASN1_TFLG_IMPTAG)
-		{
-		/* IMPLICIT tagging */
-		ret = ASN1_item_ex_d2i(val, &p, len,
-			ASN1_ITEM_ptr(tt->item), tt->tag, aclass, opt, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-						ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-		else if (ret == -1)
-			return -1;
-		}
-	else
-		{
-		/* Nothing special */
-		ret = ASN1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item),
-							-1, 0, opt, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
-					ERR_R_NESTED_ASN1_ERROR);
-			goto err;
-			}
-		else if (ret == -1)
-			return -1;
-		}
-
-	*in = p;
-	return 1;
-
-	err:
-	ASN1_template_free(val, tt);
-	return 0;
-	}
+                                   const unsigned char **in, long len,
+                                   const ASN1_TEMPLATE *tt, char opt,
+                                   ASN1_TLC *ctx)
+{
+    int flags, aclass;
+    int ret;
+    const unsigned char *p, *q;
+    if (!val)
+        return 0;
+    flags = tt->flags;
+    aclass = flags & ASN1_TFLG_TAG_CLASS;
+
+    p = *in;
+    q = p;
+
+    if (flags & ASN1_TFLG_SK_MASK) {
+        /* SET OF, SEQUENCE OF */
+        int sktag, skaclass;
+        char sk_eoc;
+        /* First work out expected inner tag value */
+        if (flags & ASN1_TFLG_IMPTAG) {
+            sktag = tt->tag;
+            skaclass = aclass;
+        } else {
+            skaclass = V_ASN1_UNIVERSAL;
+            if (flags & ASN1_TFLG_SET_OF)
+                sktag = V_ASN1_SET;
+            else
+                sktag = V_ASN1_SEQUENCE;
+        }
+        /* Get the tag */
+        ret = asn1_check_tlen(&len, NULL, NULL, &sk_eoc, NULL,
+                              &p, len, sktag, skaclass, opt, ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ERR_R_NESTED_ASN1_ERROR);
+            return 0;
+        } else if (ret == -1)
+            return -1;
+        if (!*val)
+            *val = (ASN1_VALUE *)sk_new_null();
+        else {
+            /*
+             * We've got a valid STACK: free up any items present
+             */
+            STACK_OF(ASN1_VALUE) *sktmp = (STACK_OF(ASN1_VALUE) *)*val;
+            ASN1_VALUE *vtmp;
+            while (sk_ASN1_VALUE_num(sktmp) > 0) {
+                vtmp = sk_ASN1_VALUE_pop(sktmp);
+                ASN1_item_ex_free(&vtmp, ASN1_ITEM_ptr(tt->item));
+            }
+        }
+
+        if (!*val) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+
+        /* Read as many items as we can */
+        while (len > 0) {
+            ASN1_VALUE *skfield;
+            q = p;
+            /* See if EOC found */
+            if (asn1_check_eoc(&p, len)) {
+                if (!sk_eoc) {
+                    ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
+                            ASN1_R_UNEXPECTED_EOC);
+                    goto err;
+                }
+                len -= p - q;
+                sk_eoc = 0;
+                break;
+            }
+            skfield = NULL;
+            if (!ASN1_item_ex_d2i(&skfield, &p, len,
+                                  ASN1_ITEM_ptr(tt->item), -1, 0, 0, ctx)) {
+                ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I,
+                        ERR_R_NESTED_ASN1_ERROR);
+                goto err;
+            }
+            len -= p - q;
+            if (!sk_ASN1_VALUE_push((STACK_OF(ASN1_VALUE) *)*val, skfield)) {
+                ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+        }
+        if (sk_eoc) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ASN1_R_MISSING_EOC);
+            goto err;
+        }
+    } else if (flags & ASN1_TFLG_IMPTAG) {
+        /* IMPLICIT tagging */
+        ret = ASN1_item_ex_d2i(val, &p, len,
+                               ASN1_ITEM_ptr(tt->item), tt->tag, aclass, opt,
+                               ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+    } else {
+        /* Nothing special */
+        ret = ASN1_item_ex_d2i(val, &p, len, ASN1_ITEM_ptr(tt->item),
+                               -1, 0, opt, ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_TEMPLATE_NOEXP_D2I, ERR_R_NESTED_ASN1_ERROR);
+            goto err;
+        } else if (ret == -1)
+            return -1;
+    }
+
+    *in = p;
+    return 1;
+
+ err:
+    ASN1_template_free(val, tt);
+    return 0;
+}
 
 static int asn1_d2i_ex_primitive(ASN1_VALUE **pval,
-				const unsigned char **in, long inlen, 
-				const ASN1_ITEM *it,
-				int tag, int aclass, char opt, ASN1_TLC *ctx)
-	{
-	int ret = 0, utype;
-	long plen;
-	char cst, inf, free_cont = 0;
-	const unsigned char *p;
-	BUF_MEM buf;
-	const unsigned char *cont = NULL;
-	long len; 
-	if (!pval)
-		{
-		ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ASN1_R_ILLEGAL_NULL);
-		return 0; /* Should never happen */
-		}
-
-	if (it->itype == ASN1_ITYPE_MSTRING)
-		{
-		utype = tag;
-		tag = -1;
-		}
-	else
-		utype = it->utype;
-
-	if (utype == V_ASN1_ANY)
-		{
-		/* If type is ANY need to figure out type from tag */
-		unsigned char oclass;
-		if (tag >= 0)
-			{
-			ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
-					ASN1_R_ILLEGAL_TAGGED_ANY);
-			return 0;
-			}
-		if (opt)
-			{
-			ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
-					ASN1_R_ILLEGAL_OPTIONAL_ANY);
-			return 0;
-			}
-		p = *in;
-		ret = asn1_check_tlen(NULL, &utype, &oclass, NULL, NULL,
-					&p, inlen, -1, 0, 0, ctx);
-		if (!ret)
-			{
-			ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
-					ERR_R_NESTED_ASN1_ERROR);
-			return 0;
-			}
-		if (oclass != V_ASN1_UNIVERSAL)
-			utype = V_ASN1_OTHER;
-		}
-	if (tag == -1)
-		{
-		tag = utype;
-		aclass = V_ASN1_UNIVERSAL;
-		}
-	p = *in;
-	/* Check header */
-	ret = asn1_check_tlen(&plen, NULL, NULL, &inf, &cst,
-				&p, inlen, tag, aclass, opt, ctx);
-	if (!ret)
-		{
-		ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ERR_R_NESTED_ASN1_ERROR);
-		return 0;
-		}
-	else if (ret == -1)
-		return -1;
-        ret = 0;
-	/* SEQUENCE, SET and "OTHER" are left in encoded form */
-	if ((utype == V_ASN1_SEQUENCE)
-		|| (utype == V_ASN1_SET) || (utype == V_ASN1_OTHER))
-		{
-		/* Clear context cache for type OTHER because the auto clear
-		 * when we have a exact match wont work
-		 */
-		if (utype == V_ASN1_OTHER)
-			{
-			asn1_tlc_clear(ctx);
-			}
-		/* SEQUENCE and SET must be constructed */
-		else if (!cst)
-			{
-			ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
-				ASN1_R_TYPE_NOT_CONSTRUCTED);
-			return 0;
-			}
-
-		cont = *in;
-		/* If indefinite length constructed find the real end */
-		if (inf)
-			{
-			if (!asn1_find_end(&p, plen, inf))
-				 goto err;
-			len = p - cont;
-			}
-		else
-			{
-			len = p - cont + plen;
-			p += plen;
-			buf.data = NULL;
-			}
-		}
-	else if (cst)
-		{
-		if (utype == V_ASN1_NULL || utype == V_ASN1_BOOLEAN
-			|| utype == V_ASN1_OBJECT || utype == V_ASN1_INTEGER
-			|| utype == V_ASN1_ENUMERATED)
-			{
-			ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
-				ASN1_R_TYPE_NOT_PRIMITIVE);
-			return 0;
-			}
-		buf.length = 0;
-		buf.max = 0;
-		buf.data = NULL;
-		/* Should really check the internal tags are correct but
-		 * some things may get this wrong. The relevant specs
-		 * say that constructed string types should be OCTET STRINGs
-		 * internally irrespective of the type. So instead just check
-		 * for UNIVERSAL class and ignore the tag.
-		 */
-		if (!asn1_collect(&buf, &p, plen, inf, -1, V_ASN1_UNIVERSAL, 0))
-			{
-			free_cont = 1;
-			goto err;
-			}
-		len = buf.length;
-		/* Append a final null to string */
-		if (!BUF_MEM_grow_clean(&buf, len + 1))
-			{
-			ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
-						ERR_R_MALLOC_FAILURE);
-			return 0;
-			}
-		buf.data[len] = 0;
-		cont = (const unsigned char *)buf.data;
-		free_cont = 1;
-		}
-	else
-		{
-		cont = p;
-		len = plen;
-		p += plen;
-		}
-
-	/* We now have content length and type: translate into a structure */
-	if (!asn1_ex_c2i(pval, cont, len, utype, &free_cont, it))
-		goto err;
-
-	*in = p;
-	ret = 1;
-	err:
-	if (free_cont && buf.data) OPENSSL_free(buf.data);
-	return ret;
-	}
+                                 const unsigned char **in, long inlen,
+                                 const ASN1_ITEM *it,
+                                 int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+    int ret = 0, utype;
+    long plen;
+    char cst, inf, free_cont = 0;
+    const unsigned char *p;
+    BUF_MEM buf;
+    const unsigned char *cont = NULL;
+    long len;
+    if (!pval) {
+        ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ASN1_R_ILLEGAL_NULL);
+        return 0;               /* Should never happen */
+    }
+
+    if (it->itype == ASN1_ITYPE_MSTRING) {
+        utype = tag;
+        tag = -1;
+    } else
+        utype = it->utype;
+
+    if (utype == V_ASN1_ANY) {
+        /* If type is ANY need to figure out type from tag */
+        unsigned char oclass;
+        if (tag >= 0) {
+            ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ASN1_R_ILLEGAL_TAGGED_ANY);
+            return 0;
+        }
+        if (opt) {
+            ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
+                    ASN1_R_ILLEGAL_OPTIONAL_ANY);
+            return 0;
+        }
+        p = *in;
+        ret = asn1_check_tlen(NULL, &utype, &oclass, NULL, NULL,
+                              &p, inlen, -1, 0, 0, ctx);
+        if (!ret) {
+            ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ERR_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        if (oclass != V_ASN1_UNIVERSAL)
+            utype = V_ASN1_OTHER;
+    }
+    if (tag == -1) {
+        tag = utype;
+        aclass = V_ASN1_UNIVERSAL;
+    }
+    p = *in;
+    /* Check header */
+    ret = asn1_check_tlen(&plen, NULL, NULL, &inf, &cst,
+                          &p, inlen, tag, aclass, opt, ctx);
+    if (!ret) {
+        ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ERR_R_NESTED_ASN1_ERROR);
+        return 0;
+    } else if (ret == -1)
+        return -1;
+    ret = 0;
+    /* SEQUENCE, SET and "OTHER" are left in encoded form */
+    if ((utype == V_ASN1_SEQUENCE)
+        || (utype == V_ASN1_SET) || (utype == V_ASN1_OTHER)) {
+        /*
+         * Clear context cache for type OTHER because the auto clear when we
+         * have a exact match wont work
+         */
+        if (utype == V_ASN1_OTHER) {
+            asn1_tlc_clear(ctx);
+        }
+        /* SEQUENCE and SET must be constructed */
+        else if (!cst) {
+            ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE,
+                    ASN1_R_TYPE_NOT_CONSTRUCTED);
+            return 0;
+        }
+
+        cont = *in;
+        /* If indefinite length constructed find the real end */
+        if (inf) {
+            if (!asn1_find_end(&p, plen, inf))
+                goto err;
+            len = p - cont;
+        } else {
+            len = p - cont + plen;
+            p += plen;
+            buf.data = NULL;
+        }
+    } else if (cst) {
+        if (utype == V_ASN1_NULL || utype == V_ASN1_BOOLEAN
+            || utype == V_ASN1_OBJECT || utype == V_ASN1_INTEGER
+            || utype == V_ASN1_ENUMERATED) {
+            ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ASN1_R_TYPE_NOT_PRIMITIVE);
+            return 0;
+        }
+        buf.length = 0;
+        buf.max = 0;
+        buf.data = NULL;
+        /*
+         * Should really check the internal tags are correct but some things
+         * may get this wrong. The relevant specs say that constructed string
+         * types should be OCTET STRINGs internally irrespective of the type.
+         * So instead just check for UNIVERSAL class and ignore the tag.
+         */
+        if (!asn1_collect(&buf, &p, plen, inf, -1, V_ASN1_UNIVERSAL, 0)) {
+            free_cont = 1;
+            goto err;
+        }
+        len = buf.length;
+        /* Append a final null to string */
+        if (!BUF_MEM_grow_clean(&buf, len + 1)) {
+            ASN1err(ASN1_F_ASN1_D2I_EX_PRIMITIVE, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        buf.data[len] = 0;
+        cont = (const unsigned char *)buf.data;
+        free_cont = 1;
+    } else {
+        cont = p;
+        len = plen;
+        p += plen;
+    }
+
+    /* We now have content length and type: translate into a structure */
+    if (!asn1_ex_c2i(pval, cont, len, utype, &free_cont, it))
+        goto err;
+
+    *in = p;
+    ret = 1;
+ err:
+    if (free_cont && buf.data)
+        OPENSSL_free(buf.data);
+    return ret;
+}
 
 /* Translate ASN1 content octets into a structure */
 
 int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
-			int utype, char *free_cont, const ASN1_ITEM *it)
-	{
-	ASN1_VALUE **opval = NULL;
-	ASN1_STRING *stmp;
-	ASN1_TYPE *typ = NULL;
-	int ret = 0;
-	const ASN1_PRIMITIVE_FUNCS *pf;
-	ASN1_INTEGER **tint;
-	pf = it->funcs;
-
-	if (pf && pf->prim_c2i)
-		return pf->prim_c2i(pval, cont, len, utype, free_cont, it);
-	/* If ANY type clear type and set pointer to internal value */
-	if (it->utype == V_ASN1_ANY)
-		{
-		if (!*pval)
-			{
-			typ = ASN1_TYPE_new();
-			if (typ == NULL)
-				goto err;
-			*pval = (ASN1_VALUE *)typ;
-			}
-		else
-			typ = (ASN1_TYPE *)*pval;
-
-		if (utype != typ->type)
-			ASN1_TYPE_set(typ, utype, NULL);
-		opval = pval;
-		pval = &typ->value.asn1_value;
-		}
-	switch(utype)
-		{
-		case V_ASN1_OBJECT:
-		if (!c2i_ASN1_OBJECT((ASN1_OBJECT **)pval, &cont, len))
-			goto err;
-		break;
-
-		case V_ASN1_NULL:
-		if (len)
-			{
-			ASN1err(ASN1_F_ASN1_EX_C2I,
-						ASN1_R_NULL_IS_WRONG_LENGTH);
-			goto err;
-			}
-		*pval = (ASN1_VALUE *)1;
-		break;
-
-		case V_ASN1_BOOLEAN:
-		if (len != 1)
-			{
-			ASN1err(ASN1_F_ASN1_EX_C2I,
-						ASN1_R_BOOLEAN_IS_WRONG_LENGTH);
-			goto err;
-			}
-		else
-			{
-			ASN1_BOOLEAN *tbool;
-			tbool = (ASN1_BOOLEAN *)pval;
-			*tbool = *cont;
-			}
-		break;
-
-		case V_ASN1_BIT_STRING:
-		if (!c2i_ASN1_BIT_STRING((ASN1_BIT_STRING **)pval, &cont, len))
-			goto err;
-		break;
-
-		case V_ASN1_INTEGER:
-		case V_ASN1_NEG_INTEGER:
-		case V_ASN1_ENUMERATED:
-		case V_ASN1_NEG_ENUMERATED:
-		tint = (ASN1_INTEGER **)pval;
-		if (!c2i_ASN1_INTEGER(tint, &cont, len))
-			goto err;
-		/* Fixup type to match the expected form */
-		(*tint)->type = utype | ((*tint)->type & V_ASN1_NEG);
-		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_OTHER:
-		case V_ASN1_SET:
-		case V_ASN1_SEQUENCE:
-		default:
-		if (utype == V_ASN1_BMPSTRING && (len & 1))
-			{
-			ASN1err(ASN1_F_ASN1_EX_C2I,
-					ASN1_R_BMPSTRING_IS_WRONG_LENGTH);
-			goto err;
-			}
-		if (utype == V_ASN1_UNIVERSALSTRING && (len & 3))
-			{
-			ASN1err(ASN1_F_ASN1_EX_C2I,
-					ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH);
-			goto err;
-			}
-		/* All based on ASN1_STRING and handled the same */
-		if (!*pval)
-			{
-			stmp = ASN1_STRING_type_new(utype);
-			if (!stmp)
-				{
-				ASN1err(ASN1_F_ASN1_EX_C2I,
-							ERR_R_MALLOC_FAILURE);
-				goto err;
-				}
-			*pval = (ASN1_VALUE *)stmp;
-			}
-		else
-			{
-			stmp = (ASN1_STRING *)*pval;
-			stmp->type = utype;
-			}
-		/* If we've already allocated a buffer use it */
-		if (*free_cont)
-			{
-			if (stmp->data)
-				OPENSSL_free(stmp->data);
-			stmp->data = (unsigned char *)cont; /* UGLY CAST! RL */
-			stmp->length = len;
-			*free_cont = 0;
-			}
-		else
-			{
-			if (!ASN1_STRING_set(stmp, cont, len))
-				{
-				ASN1err(ASN1_F_ASN1_EX_C2I,
-							ERR_R_MALLOC_FAILURE);
-				ASN1_STRING_free(stmp);	
-				*pval = NULL;
-				goto err;
-				}
-			}
-		break;
-		}
-	/* If ASN1_ANY and NULL type fix up value */
-	if (typ && (utype == V_ASN1_NULL))
-		 typ->value.ptr = NULL;
-
-	ret = 1;
-	err:
-	if (!ret)
-		{
-		ASN1_TYPE_free(typ);
-		if (opval)
-			*opval = NULL;
-		}
-	return ret;
-	}
-
-
-/* This function finds the end of an ASN1 structure when passed its maximum
- * length, whether it is indefinite length and a pointer to the content.
- * This is more efficient than calling asn1_collect because it does not
- * recurse on each indefinite length header.
+                int utype, char *free_cont, const ASN1_ITEM *it)
+{
+    ASN1_VALUE **opval = NULL;
+    ASN1_STRING *stmp;
+    ASN1_TYPE *typ = NULL;
+    int ret = 0;
+    const ASN1_PRIMITIVE_FUNCS *pf;
+    ASN1_INTEGER **tint;
+    pf = it->funcs;
+
+    if (pf && pf->prim_c2i)
+        return pf->prim_c2i(pval, cont, len, utype, free_cont, it);
+    /* If ANY type clear type and set pointer to internal value */
+    if (it->utype == V_ASN1_ANY) {
+        if (!*pval) {
+            typ = ASN1_TYPE_new();
+            if (typ == NULL)
+                goto err;
+            *pval = (ASN1_VALUE *)typ;
+        } else
+            typ = (ASN1_TYPE *)*pval;
+
+        if (utype != typ->type)
+            ASN1_TYPE_set(typ, utype, NULL);
+        opval = pval;
+        pval = &typ->value.asn1_value;
+    }
+    switch (utype) {
+    case V_ASN1_OBJECT:
+        if (!c2i_ASN1_OBJECT((ASN1_OBJECT **)pval, &cont, len))
+            goto err;
+        break;
+
+    case V_ASN1_NULL:
+        if (len) {
+            ASN1err(ASN1_F_ASN1_EX_C2I, ASN1_R_NULL_IS_WRONG_LENGTH);
+            goto err;
+        }
+        *pval = (ASN1_VALUE *)1;
+        break;
+
+    case V_ASN1_BOOLEAN:
+        if (len != 1) {
+            ASN1err(ASN1_F_ASN1_EX_C2I, ASN1_R_BOOLEAN_IS_WRONG_LENGTH);
+            goto err;
+        } else {
+            ASN1_BOOLEAN *tbool;
+            tbool = (ASN1_BOOLEAN *)pval;
+            *tbool = *cont;
+        }
+        break;
+
+    case V_ASN1_BIT_STRING:
+        if (!c2i_ASN1_BIT_STRING((ASN1_BIT_STRING **)pval, &cont, len))
+            goto err;
+        break;
+
+    case V_ASN1_INTEGER:
+    case V_ASN1_NEG_INTEGER:
+    case V_ASN1_ENUMERATED:
+    case V_ASN1_NEG_ENUMERATED:
+        tint = (ASN1_INTEGER **)pval;
+        if (!c2i_ASN1_INTEGER(tint, &cont, len))
+            goto err;
+        /* Fixup type to match the expected form */
+        (*tint)->type = utype | ((*tint)->type & V_ASN1_NEG);
+        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_OTHER:
+    case V_ASN1_SET:
+    case V_ASN1_SEQUENCE:
+    default:
+        if (utype == V_ASN1_BMPSTRING && (len & 1)) {
+            ASN1err(ASN1_F_ASN1_EX_C2I, ASN1_R_BMPSTRING_IS_WRONG_LENGTH);
+            goto err;
+        }
+        if (utype == V_ASN1_UNIVERSALSTRING && (len & 3)) {
+            ASN1err(ASN1_F_ASN1_EX_C2I,
+                    ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH);
+            goto err;
+        }
+        /* All based on ASN1_STRING and handled the same */
+        if (!*pval) {
+            stmp = ASN1_STRING_type_new(utype);
+            if (!stmp) {
+                ASN1err(ASN1_F_ASN1_EX_C2I, ERR_R_MALLOC_FAILURE);
+                goto err;
+            }
+            *pval = (ASN1_VALUE *)stmp;
+        } else {
+            stmp = (ASN1_STRING *)*pval;
+            stmp->type = utype;
+        }
+        /* If we've already allocated a buffer use it */
+        if (*free_cont) {
+            if (stmp->data)
+                OPENSSL_free(stmp->data);
+            stmp->data = (unsigned char *)cont; /* UGLY CAST! RL */
+            stmp->length = len;
+            *free_cont = 0;
+        } else {
+            if (!ASN1_STRING_set(stmp, cont, len)) {
+                ASN1err(ASN1_F_ASN1_EX_C2I, ERR_R_MALLOC_FAILURE);
+                ASN1_STRING_free(stmp);
+                *pval = NULL;
+                goto err;
+            }
+        }
+        break;
+    }
+    /* If ASN1_ANY and NULL type fix up value */
+    if (typ && (utype == V_ASN1_NULL))
+        typ->value.ptr = NULL;
+
+    ret = 1;
+ err:
+    if (!ret) {
+        ASN1_TYPE_free(typ);
+        if (opval)
+            *opval = NULL;
+    }
+    return ret;
+}
+
+/*
+ * This function finds the end of an ASN1 structure when passed its maximum
+ * length, whether it is indefinite length and a pointer to the content. This
+ * is more efficient than calling asn1_collect because it does not recurse on
+ * each indefinite length header.
  */
 
 static int asn1_find_end(const unsigned char **in, long len, char inf)
-	{
-	int expected_eoc;
-	long plen;
-	const unsigned char *p = *in, *q;
-	/* If not indefinite length constructed just add length */
-	if (inf == 0)
-		{
-		*in += len;
-		return 1;
-		}
-	expected_eoc = 1;
-	/* Indefinite length constructed form. Find the end when enough EOCs
-	 * are found. If more indefinite length constructed headers
-	 * are encountered increment the expected eoc count otherwise just
-	 * skip to the end of the data.
-	 */
-	while (len > 0)
-		{
-		if(asn1_check_eoc(&p, len))
-			{
-			expected_eoc--;
-			if (expected_eoc == 0)
-				break;
-			len -= 2;
-			continue;
-			}
-		q = p;
-		/* Just read in a header: only care about the length */
-		if(!asn1_check_tlen(&plen, NULL, NULL, &inf, NULL, &p, len,
-				-1, 0, 0, NULL))
-			{
-			ASN1err(ASN1_F_ASN1_FIND_END, ERR_R_NESTED_ASN1_ERROR);
-			return 0;
-			}
-		if (inf)
-			expected_eoc++;
-		else
-			p += plen;
-		len -= p - q;
-		}
-	if (expected_eoc)
-		{
-		ASN1err(ASN1_F_ASN1_FIND_END, ASN1_R_MISSING_EOC);
-		return 0;
-		}
-	*in = p;
-	return 1;
-	}
-/* This function collects the asn1 data from a constructred string
- * type into a buffer. The values of 'in' and 'len' should refer
- * to the contents of the constructed type and 'inf' should be set
- * if it is indefinite length.
+{
+    int expected_eoc;
+    long plen;
+    const unsigned char *p = *in, *q;
+    /* If not indefinite length constructed just add length */
+    if (inf == 0) {
+        *in += len;
+        return 1;
+    }
+    expected_eoc = 1;
+    /*
+     * Indefinite length constructed form. Find the end when enough EOCs are
+     * found. If more indefinite length constructed headers are encountered
+     * increment the expected eoc count otherwise just skip to the end of the
+     * data.
+     */
+    while (len > 0) {
+        if (asn1_check_eoc(&p, len)) {
+            expected_eoc--;
+            if (expected_eoc == 0)
+                break;
+            len -= 2;
+            continue;
+        }
+        q = p;
+        /* Just read in a header: only care about the length */
+        if (!asn1_check_tlen(&plen, NULL, NULL, &inf, NULL, &p, len,
+                             -1, 0, 0, NULL)) {
+            ASN1err(ASN1_F_ASN1_FIND_END, ERR_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+        if (inf)
+            expected_eoc++;
+        else
+            p += plen;
+        len -= p - q;
+    }
+    if (expected_eoc) {
+        ASN1err(ASN1_F_ASN1_FIND_END, ASN1_R_MISSING_EOC);
+        return 0;
+    }
+    *in = p;
+    return 1;
+}
+
+/*
+ * This function collects the asn1 data from a constructred string type into
+ * a buffer. The values of 'in' and 'len' should refer to the contents of the
+ * constructed type and 'inf' should be set if it is indefinite length.
  */
 
 #ifndef ASN1_MAX_STRING_NEST
-/* This determines how many levels of recursion are permitted in ASN1
- * string types. If it is not limited stack overflows can occur. If set
- * to zero no recursion is allowed at all. Although zero should be adequate
- * examples exist that require a value of 1. So 5 should be more than enough.
+/*
+ * This determines how many levels of recursion are permitted in ASN1 string
+ * types. If it is not limited stack overflows can occur. If set to zero no
+ * recursion is allowed at all. Although zero should be adequate examples
+ * exist that require a value of 1. So 5 should be more than enough.
  */
-#define ASN1_MAX_STRING_NEST 5
+# define ASN1_MAX_STRING_NEST 5
 #endif
 
-
 static int asn1_collect(BUF_MEM *buf, const unsigned char **in, long len,
-			char inf, int tag, int aclass, int depth)
-	{
-	const unsigned char *p, *q;
-	long plen;
-	char cst, ininf;
-	p = *in;
-	inf &= 1;
-	/* If no buffer and not indefinite length constructed just pass over
-	 * the encoded data */
-	if (!buf && !inf)
-		{
-		*in += len;
-		return 1;
-		}
-	while(len > 0)
-		{
-		q = p;
-		/* Check for EOC */
-		if (asn1_check_eoc(&p, len))
-			{
-			/* EOC is illegal outside indefinite length
-			 * constructed form */
-			if (!inf)
-				{
-				ASN1err(ASN1_F_ASN1_COLLECT,
-					ASN1_R_UNEXPECTED_EOC);
-				return 0;
-				}
-			inf = 0;
-			break;
-			}
-
-		if (!asn1_check_tlen(&plen, NULL, NULL, &ininf, &cst, &p,
-					len, tag, aclass, 0, NULL))
-			{
-			ASN1err(ASN1_F_ASN1_COLLECT, ERR_R_NESTED_ASN1_ERROR);
-			return 0;
-			}
-
-		/* If indefinite length constructed update max length */
-		if (cst)
-			{
-			if (depth >= ASN1_MAX_STRING_NEST)
-				{
-				ASN1err(ASN1_F_ASN1_COLLECT,
-					ASN1_R_NESTED_ASN1_STRING);
-				return 0;
-				}
-			if (!asn1_collect(buf, &p, plen, ininf, tag, aclass,
-						depth + 1))
-				return 0;
-			}
-		else if (plen && !collect_data(buf, &p, plen))
-			return 0;
-		len -= p - q;
-		}
-	if (inf)
-		{
-		ASN1err(ASN1_F_ASN1_COLLECT, ASN1_R_MISSING_EOC);
-		return 0;
-		}
-	*in = p;
-	return 1;
-	}
+                        char inf, int tag, int aclass, int depth)
+{
+    const unsigned char *p, *q;
+    long plen;
+    char cst, ininf;
+    p = *in;
+    inf &= 1;
+    /*
+     * If no buffer and not indefinite length constructed just pass over the
+     * encoded data
+     */
+    if (!buf && !inf) {
+        *in += len;
+        return 1;
+    }
+    while (len > 0) {
+        q = p;
+        /* Check for EOC */
+        if (asn1_check_eoc(&p, len)) {
+            /*
+             * EOC is illegal outside indefinite length constructed form
+             */
+            if (!inf) {
+                ASN1err(ASN1_F_ASN1_COLLECT, ASN1_R_UNEXPECTED_EOC);
+                return 0;
+            }
+            inf = 0;
+            break;
+        }
+
+        if (!asn1_check_tlen(&plen, NULL, NULL, &ininf, &cst, &p,
+                             len, tag, aclass, 0, NULL)) {
+            ASN1err(ASN1_F_ASN1_COLLECT, ERR_R_NESTED_ASN1_ERROR);
+            return 0;
+        }
+
+        /* If indefinite length constructed update max length */
+        if (cst) {
+            if (depth >= ASN1_MAX_STRING_NEST) {
+                ASN1err(ASN1_F_ASN1_COLLECT, ASN1_R_NESTED_ASN1_STRING);
+                return 0;
+            }
+            if (!asn1_collect(buf, &p, plen, ininf, tag, aclass, depth + 1))
+                return 0;
+        } else if (plen && !collect_data(buf, &p, plen))
+            return 0;
+        len -= p - q;
+    }
+    if (inf) {
+        ASN1err(ASN1_F_ASN1_COLLECT, ASN1_R_MISSING_EOC);
+        return 0;
+    }
+    *in = p;
+    return 1;
+}
 
 static int collect_data(BUF_MEM *buf, const unsigned char **p, long plen)
-	{
-	int len;
-	if (buf)
-		{
-		len = buf->length;
-		if (!BUF_MEM_grow_clean(buf, len + plen))
-			{
-			ASN1err(ASN1_F_COLLECT_DATA, ERR_R_MALLOC_FAILURE);
-			return 0;
-			}
-		memcpy(buf->data + len, *p, plen);
-		}
-	*p += plen;
-	return 1;
-	}
+{
+    int len;
+    if (buf) {
+        len = buf->length;
+        if (!BUF_MEM_grow_clean(buf, len + plen)) {
+            ASN1err(ASN1_F_COLLECT_DATA, ERR_R_MALLOC_FAILURE);
+            return 0;
+        }
+        memcpy(buf->data + len, *p, plen);
+    }
+    *p += plen;
+    return 1;
+}
 
 /* Check for ASN1 EOC and swallow it if found */
 
 static int asn1_check_eoc(const unsigned char **in, long len)
-	{
-	const unsigned char *p;
-	if (len < 2) return 0;
-	p = *in;
-	if (!p[0] && !p[1])
-		{
-		*in += 2;
-		return 1;
-		}
-	return 0;
-	}
-
-/* Check an ASN1 tag and length: a bit like ASN1_get_object
- * but it sets the length for indefinite length constructed
- * form, we don't know the exact length but we can set an
- * upper bound to the amount of data available minus the
- * header length just read.
+{
+    const unsigned char *p;
+    if (len < 2)
+        return 0;
+    p = *in;
+    if (!p[0] && !p[1]) {
+        *in += 2;
+        return 1;
+    }
+    return 0;
+}
+
+/*
+ * Check an ASN1 tag and length: a bit like ASN1_get_object but it sets the
+ * length for indefinite length constructed form, we don't know the exact
+ * length but we can set an upper bound to the amount of data available minus
+ * the header length just read.
  */
 
 static int asn1_check_tlen(long *olen, int *otag, unsigned char *oclass,
-				char *inf, char *cst,
-				const unsigned char **in, long len,
-				int exptag, int expclass, char opt,
-				ASN1_TLC *ctx)
-	{
-	int i;
-	int ptag, pclass;
-	long plen;
-	const unsigned char *p, *q;
-	p = *in;
-	q = p;
-
-	if (ctx && ctx->valid)
-		{
-		i = ctx->ret;
-		plen = ctx->plen;
-		pclass = ctx->pclass;
-		ptag = ctx->ptag;
-		p += ctx->hdrlen;
-		}
-	else
-		{
-		i = ASN1_get_object(&p, &plen, &ptag, &pclass, len);
-		if (ctx)
-			{
-			ctx->ret = i;
-			ctx->plen = plen;
-			ctx->pclass = pclass;
-			ctx->ptag = ptag;
-			ctx->hdrlen = p - q;
-			ctx->valid = 1;
-			/* If definite length, and no error, length +
-			 * header can't exceed total amount of data available. 
-			 */
-			if (!(i & 0x81) && ((plen + ctx->hdrlen) > len))
-				{
-				ASN1err(ASN1_F_ASN1_CHECK_TLEN,
-							ASN1_R_TOO_LONG);
-				asn1_tlc_clear(ctx);
-				return 0;
-				}
-			}
-		}
-
-	if (i & 0x80)
-		{
-		ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_BAD_OBJECT_HEADER);
-		asn1_tlc_clear(ctx);
-		return 0;
-		}
-	if (exptag >= 0)
-		{
-		if ((exptag != ptag) || (expclass != pclass))
-			{
-			/* If type is OPTIONAL, not an error:
-			 * indicate missing type.
-			 */
-			if (opt) return -1;
-			asn1_tlc_clear(ctx);
-			ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_WRONG_TAG);
-			return 0;
-			}
-		/* We have a tag and class match:
-		 * assume we are going to do something with it */
-		asn1_tlc_clear(ctx);
-		}
-
-	if (i & 1)
-		plen = len - (p - q);
-
-	if (inf)
-		*inf = i & 1;
-
-	if (cst)
-		*cst = i & V_ASN1_CONSTRUCTED;
-
-	if (olen)
-		*olen = plen;
-
-	if (oclass)
-		*oclass = pclass;
-
-	if (otag)
-		*otag = ptag;
-
-	*in = p;
-	return 1;
-	}
+                           char *inf, char *cst,
+                           const unsigned char **in, long len,
+                           int exptag, int expclass, char opt, ASN1_TLC *ctx)
+{
+    int i;
+    int ptag, pclass;
+    long plen;
+    const unsigned char *p, *q;
+    p = *in;
+    q = p;
+
+    if (ctx && ctx->valid) {
+        i = ctx->ret;
+        plen = ctx->plen;
+        pclass = ctx->pclass;
+        ptag = ctx->ptag;
+        p += ctx->hdrlen;
+    } else {
+        i = ASN1_get_object(&p, &plen, &ptag, &pclass, len);
+        if (ctx) {
+            ctx->ret = i;
+            ctx->plen = plen;
+            ctx->pclass = pclass;
+            ctx->ptag = ptag;
+            ctx->hdrlen = p - q;
+            ctx->valid = 1;
+            /*
+             * If definite length, and no error, length + header can't exceed
+             * total amount of data available.
+             */
+            if (!(i & 0x81) && ((plen + ctx->hdrlen) > len)) {
+                ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_TOO_LONG);
+                asn1_tlc_clear(ctx);
+                return 0;
+            }
+        }
+    }
+
+    if (i & 0x80) {
+        ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_BAD_OBJECT_HEADER);
+        asn1_tlc_clear(ctx);
+        return 0;
+    }
+    if (exptag >= 0) {
+        if ((exptag != ptag) || (expclass != pclass)) {
+            /*
+             * If type is OPTIONAL, not an error: indicate missing type.
+             */
+            if (opt)
+                return -1;
+            asn1_tlc_clear(ctx);
+            ASN1err(ASN1_F_ASN1_CHECK_TLEN, ASN1_R_WRONG_TAG);
+            return 0;
+        }
+        /*
+         * We have a tag and class match: assume we are going to do something
+         * with it
+         */
+        asn1_tlc_clear(ctx);
+    }
+
+    if (i & 1)
+        plen = len - (p - q);
+
+    if (inf)
+        *inf = i & 1;
+
+    if (cst)
+        *cst = i & V_ASN1_CONSTRUCTED;
+
+    if (olen)
+        *olen = plen;
+
+    if (oclass)
+        *oclass = pclass;
+
+    if (otag)
+        *otag = ptag;
+
+    *in = p;
+    return 1;
+}