add prototype for e_cert_get_asn1_struct.

2003-12-04  Chris Toshok  <toshok@ximian.com>

	* lib/e-cert.h: add prototype for e_cert_get_asn1_struct.

	* lib/e-cert.c (e_cert_dispose): unref the asn1 object.
	(get_int_value): copy and massage from mozilla source.
	(process_version): same.
	(process_serial_number_der): same.
	(get_default_oid_format): same.
	(get_oid_text): same.
	(process_raw_bytes): same.
	(process_sec_algorithm_id): same.
	(process_subject_public_key_info): same.
	(process_ns_cert_type_extensions): same.
	(process_key_usage_extensions): same.
	(process_extension_data): same.
	(process_single_extension): same.
	(process_extensions): same.
	(process_name): same.
	(create_tbs_certificate_asn1_struct): same.
	(create_asn1_struct): same.
	(e_cert_get_asn1_struct): new function.

	* lib/e-asn1-object.c (e_asn1_object_dispose): free the display
	name, value, and children.
	(e_asn1_object_init): assume it's a valid container unless we hear
	otherwise.
	(e_asn1_object_new_from_cert): nuke.
	(e_asn1_object_set_valid_container): implement.
	(e_asn1_object_append_child): same.
	(e_asn1_object_set_display_name): same.
	(e_asn1_object_set_display_value): same.

	* lib/e-asn1-object.h: add prototypes for
	e_asn1_object_set_valid_container, e_asn1_object_set_display_name,
	e_asn1_object_set_display_value, and e_asn1_object_append_child.

	* gui/certificate-viewer.c (populate_fields_tree): populate the
	tree from the asn structure.
	(hierarchy_selection_changed): blow away the old fields_tree
	content and populate it again.
	(fields_selection_changed): implement, set the text view's
	contents to the asn1 object's display_value.
	(fill_in_details): expand all nodes in the hierarchy tree.

svn path=/trunk/; revision=23640

1 files changed, 741 insertions, 0 deletions

diff --git a/smime/lib/e-cert.c b/smime/lib/e-cert.c
index 2389cc29c8..173f445c22 100644
--- a/smime/lib/e-cert.c
+++ b/smime/lib/e-cert.c
@@ -90,6 +90,8 @@ struct _ECertPrivate {
 	char *sha1_fingerprint;
 	char *md5_fingerprint;
 
+	EASN1Object *asn1;
+
 	gboolean delete;
 };
 
@@ -130,6 +132,9 @@ e_cert_dispose (GObject *object)
 	if (ec->priv->md5_fingerprint)
 		PORT_Free (ec->priv->md5_fingerprint);
 
+	if (ec->priv->asn1)
+		g_object_unref (ec->priv->asn1);
+
 	if (ec->priv->delete) {
 		printf ("attempting to delete cert marked for deletion\n");
 		if (e_cert_get_cert_type (ec) == E_CERT_USER) {
@@ -434,6 +439,742 @@ e_cert_get_chain (ECert *ecert)
 	return l;
 }
 
+static gboolean
+get_int_value (SECItem *versionItem, 
+	       unsigned long *version)
+{
+	SECStatus srv;
+	srv = SEC_ASN1DecodeInteger(versionItem,version);
+	if (srv != SECSuccess) {
+		g_warning ("could not decode version of cert");
+		return FALSE;
+	}
+	return TRUE;
+}
+
+static gboolean
+process_version (SECItem     *versionItem,
+		 EASN1Object **retItem)
+{
+	EASN1Object *item = e_asn1_object_new ();
+	unsigned long version;
+
+	e_asn1_object_set_display_name (item, _("Version"));
+
+	/* Now to figure out what version this certificate is. */
+
+	if (versionItem->data) {
+		if (!get_int_value (versionItem, &version))
+			return FALSE;
+	} else {
+		/* If there is no version present in the cert, then rfc2459
+		   says we default to v1 (0) */
+		version = 0;
+	}
+
+	switch (version){
+	case 0:
+		e_asn1_object_set_display_value (item, _("Version 1"));
+		break;
+	case 1:
+		e_asn1_object_set_display_value (item, _("Version 2"));
+		break;
+	case 2:
+		e_asn1_object_set_display_value (item, _("Version 3"));
+		break;
+	default:
+		g_warning ("Bad value for cert version");
+		return FALSE;
+	}
+
+	*retItem = item;
+	return TRUE;
+}
+
+static gboolean
+process_serial_number_der (SECItem      *serialItem, 
+			   EASN1Object **retItem)
+{
+	char *serialNumber;
+	EASN1Object *item = e_asn1_object_new ();
+
+	e_asn1_object_set_display_name (item, _("Serial Number"));
+
+	serialNumber = CERT_Hexify(serialItem, 1);
+
+	e_asn1_object_set_display_value (item, serialNumber);
+	PORT_Free (serialNumber); /* XXX the right free to use? */
+
+	*retItem = item;
+	return TRUE;
+}
+
+static gboolean
+get_default_oid_format (SECItem *oid,
+			char **text)
+{
+	char buf[300];
+	unsigned int len;
+	int written;
+    
+	unsigned long val  = oid->data[0];
+	unsigned int  i    = val % 40;
+	val /= 40;
+	written = PR_snprintf(buf, 300, "%lu %u ", val, i);
+	if (written < 0)
+		return FALSE;
+	len = written;
+
+	val = 0;
+	for (i = 1; i < oid->len; ++i) {
+		/* In this loop, we have to parse a DER formatted 
+		   If the first bit is a 1, then the integer is 
+		   represented by more than one byte.  If the 
+		   first bit is set then we continue on and add
+		   the values of the later bytes until we get 
+		   a byte without the first bit set.
+		*/
+		unsigned long j;
+
+		j = oid->data[i];
+		val = (val << 7) | (j & 0x7f);
+		if (j & 0x80)
+			continue;
+		written = PR_snprintf(&buf[len], sizeof(buf)-len, "%lu ", val);
+		if (written < 0)
+			return FALSE;
+
+		len += written;
+		if (len >= sizeof (buf))
+			g_warning ("OID data to big to display in 300 chars.");
+		val = 0;      
+  }
+
+  *text = g_strdup (buf);
+  return TRUE;
+}
+
+static gboolean
+get_oid_text (SECItem *oid, char **text)
+{ 
+	SECOidTag oidTag = SECOID_FindOIDTag(oid);
+	char *temp;
+
+	switch (oidTag) {
+	case SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION:
+		*text = g_strdup (_("PKCS #1 MD2 With RSA Encryption"));
+		break;
+	case SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION:
+		*text = g_strdup (_("PKCS #1 MD5 With RSA Encryption"));
+		break;
+	case SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION:
+		*text = g_strdup (_("PKCS #1 SHA-1 With RSA Encryption"));
+		break;
+	case SEC_OID_AVA_COUNTRY_NAME:
+		*text = g_strdup (_("C"));
+		break;
+	case SEC_OID_AVA_COMMON_NAME:
+		*text = g_strdup (_("CN"));
+		break;
+	case SEC_OID_AVA_ORGANIZATIONAL_UNIT_NAME:
+		*text = g_strdup (_("OU"));
+		break;
+	case SEC_OID_AVA_ORGANIZATION_NAME:
+		*text = g_strdup (_("O"));
+		break;
+	case SEC_OID_AVA_LOCALITY:
+		*text = g_strdup (_("L"));
+		break;
+	case SEC_OID_AVA_DN_QUALIFIER:
+		*text = g_strdup (_("DN"));
+		break;
+	case SEC_OID_AVA_DC:
+		*text = g_strdup (_("DC"));
+		break;
+	case SEC_OID_AVA_STATE_OR_PROVINCE:
+		*text = g_strdup (_("ST"));
+		break;
+	case SEC_OID_PKCS1_RSA_ENCRYPTION:
+		*text = g_strdup (_("PKCS #1 RSA Encryption"));
+		break;
+	case SEC_OID_X509_KEY_USAGE:
+		*text = g_strdup (_("Certificate Key Usage"));
+		break;
+	case SEC_OID_NS_CERT_EXT_CERT_TYPE:
+		*text = g_strdup (_("Netscape Certificate Type"));
+		break;
+	case SEC_OID_X509_AUTH_KEY_ID:
+		*text = g_strdup (_("Certificate Authority Key Identifier"));
+		break;
+	case SEC_OID_RFC1274_UID:
+		*text = g_strdup (_("UID"));
+		break;
+	case SEC_OID_PKCS9_EMAIL_ADDRESS:
+		*text = g_strdup (_("E"));
+		break;
+	default:
+		if (!get_default_oid_format (oid, &temp))
+			return FALSE;
+
+		*text = g_strdup_printf (_("Object Identifier (%s)"), temp);
+		g_free (temp);
+
+		break;
+	}
+	return TRUE;  
+}
+
+
+static gboolean
+process_raw_bytes (SECItem *data, char **text)
+{
+	/* This function is used to display some DER bytes
+	   that we have not added support for decoding.
+	   It prints the value of the byte out into a 
+	   string that can later be displayed as a byte
+	   string.  We place a new line after 24 bytes
+	   to break up extermaly long sequence of bytes.
+	*/
+	GString *str = g_string_new ("");
+	PRUint32 i;
+	char buffer[5];
+	for (i=0; i<data->len; i++) {
+		PR_snprintf(buffer, 5, "%02x ", data->data[i]);
+		g_string_append (str, buffer);
+		if ((i+1)%16 == 0) {
+			g_string_append (str, "\n");
+		}
+	}
+	*text = g_string_free (str, FALSE);
+	return TRUE;
+}    
+
+static gboolean
+process_sec_algorithm_id (SECAlgorithmID  *algID,
+			  EASN1Object    **retSequence)
+{
+	EASN1Object *sequence = e_asn1_object_new ();
+	char *text;
+
+	*retSequence = NULL;
+
+	get_oid_text (&algID->algorithm, &text);
+
+	if (!algID->parameters.len || algID->parameters.data[0] == E_ASN1_OBJECT_TYPE_NULL) {
+		e_asn1_object_set_display_value (sequence, text);
+		e_asn1_object_set_valid_container (sequence, FALSE);
+	} else {
+		EASN1Object *subitem;
+
+		subitem = e_asn1_object_new ();
+		e_asn1_object_set_display_name (subitem, _("Algorithm Identifier"));
+		e_asn1_object_set_display_value (subitem, text);
+		e_asn1_object_append_child (sequence, subitem);
+		g_object_unref (subitem);
+
+		g_free (text);
+
+		subitem = e_asn1_object_new ();
+		e_asn1_object_set_display_name (subitem, _("Algorithm Parameters"));
+		process_raw_bytes (&algID->parameters, &text);
+		e_asn1_object_set_display_value (subitem, text);
+		e_asn1_object_append_child (sequence, subitem);
+		g_object_unref (subitem);
+	}
+
+	g_free (text);
+	*retSequence = sequence;
+	return TRUE;
+}
+
+static gboolean
+process_subject_public_key_info (CERTSubjectPublicKeyInfo *spki,
+				 EASN1Object *parentSequence)
+{
+	EASN1Object *spkiSequence = e_asn1_object_new();
+	EASN1Object *sequenceItem;
+	EASN1Object *printableItem;
+	char *text;
+
+	e_asn1_object_set_display_name (spkiSequence, _("Subject Public Key Info"));
+
+	if (!process_sec_algorithm_id (&spki->algorithm, &sequenceItem))
+		return FALSE;
+
+	e_asn1_object_set_display_name (sequenceItem, _("Subject Public Key Algorithm"));
+
+	e_asn1_object_append_child (spkiSequence, sequenceItem);
+
+	/* The subjectPublicKey field is encoded as a bit string.
+	   ProcessRawBytes expects the lenght to be in bytes, so 
+	   let's convert the lenght into a temporary SECItem.
+	*/
+	SECItem data;
+	data.data = spki->subjectPublicKey.data;
+	data.len  = spki->subjectPublicKey.len / 8;
+
+	process_raw_bytes (&data, &text);
+	printableItem = e_asn1_object_new ();
+
+	e_asn1_object_set_display_value (printableItem, text);
+	e_asn1_object_set_display_name (printableItem, _("Subject's Public Key"));
+	e_asn1_object_append_child (spkiSequence, printableItem);
+	g_object_unref (printableItem);
+
+	e_asn1_object_append_child (parentSequence, spkiSequence);
+	g_object_unref (spkiSequence);
+
+	return TRUE;
+}
+
+static gboolean
+process_ns_cert_type_extensions (SECItem  *extData, 
+				 GString *text)
+{
+	SECItem decoded;
+	unsigned char nsCertType;
+
+	decoded.data = NULL;
+	decoded.len  = 0;
+	if (SECSuccess != SEC_ASN1DecodeItem(NULL, &decoded, 
+					     SEC_ASN1_GET(SEC_BitStringTemplate), extData)) {
+		g_string_append (text, _("Error: Unable to process extension"));
+		return TRUE;
+	}
+
+	nsCertType = decoded.data[0];
+
+	PORT_Free (decoded.data); /* XXX right free? */
+
+	if (nsCertType & NS_CERT_TYPE_SSL_CLIENT) {
+		g_string_append (text, _("SSL Client Certificate"));
+		g_string_append (text, "\n");
+	}
+	if (nsCertType & NS_CERT_TYPE_SSL_SERVER) {
+		g_string_append (text, _("SSL Server Certificate"));
+		g_string_append (text, "\n");
+	}
+	if (nsCertType & NS_CERT_TYPE_EMAIL) {
+		g_string_append (text, _("Email"));
+		g_string_append (text, "\n");
+	}
+	if (nsCertType & NS_CERT_TYPE_OBJECT_SIGNING) {
+		g_string_append (text, _("Object Signer"));
+		g_string_append (text, "\n");
+	}
+	if (nsCertType & NS_CERT_TYPE_SSL_CA) {
+		g_string_append (text, _("SSL Certificate Authority"));
+		g_string_append (text, "\n");
+	}
+	if (nsCertType & NS_CERT_TYPE_EMAIL_CA) {
+		g_string_append (text, _("Email Certificate Authority"));
+		g_string_append (text, "\n");
+	}
+	if (nsCertType & NS_CERT_TYPE_OBJECT_SIGNING_CA) {
+		g_string_append (text, _("Object Signer"));
+		g_string_append (text, "\n");
+	}
+	return TRUE;
+}
+
+static gboolean
+process_key_usage_extensions (SECItem *extData, GString *text)
+{
+	SECItem decoded;
+	unsigned char keyUsage;
+
+	decoded.data = NULL;
+	decoded.len  = 0;
+	if (SECSuccess != SEC_ASN1DecodeItem(NULL, &decoded, 
+					     SEC_ASN1_GET(SEC_BitStringTemplate), extData)) {
+		g_string_append (text, _("Error: Unable to process extension"));
+		return TRUE;
+	}
+
+	keyUsage = decoded.data[0];
+	PORT_Free (decoded.data); /* XXX right free? */
+
+	if (keyUsage & KU_DIGITAL_SIGNATURE) {
+		g_string_append (text, _("Signing"));
+		g_string_append (text, "\n");
+	}
+	if (keyUsage & KU_NON_REPUDIATION) {
+		g_string_append (text, _("Non-repudiation"));
+		g_string_append (text, "\n");
+	}
+	if (keyUsage & KU_KEY_ENCIPHERMENT) {
+		g_string_append (text, _("Key Encipherment"));
+		g_string_append (text, "\n");
+	}
+	if (keyUsage & KU_DATA_ENCIPHERMENT) {
+		g_string_append (text, _("Data Encipherment"));
+		g_string_append (text, "\n");
+	}
+	if (keyUsage & KU_KEY_AGREEMENT) {
+		g_string_append (text, _("Key Agreement"));
+		g_string_append (text, "\n");
+	}
+	if (keyUsage & KU_KEY_CERT_SIGN) {
+		g_string_append (text, _("Certificate Signer"));
+		g_string_append (text, "\n");
+	}
+	if (keyUsage & KU_CRL_SIGN) {
+		g_string_append (text, _("CRL Signer"));
+		g_string_append (text, "\n");
+	}
+	
+	return TRUE;
+}
+
+static gboolean
+process_extension_data (SECOidTag oidTag, SECItem *extData, 
+			GString *str)
+{
+	gboolean rv;
+	switch (oidTag) {
+	case SEC_OID_NS_CERT_EXT_CERT_TYPE:
+		rv = process_ns_cert_type_extensions (extData, str);
+		break;
+	case SEC_OID_X509_KEY_USAGE:
+		rv = process_key_usage_extensions (extData, str);
+		break;
+	default: {
+		char *text;
+		rv = process_raw_bytes (extData, &text);
+		g_string_append (str, text);
+		g_free (text);
+		break; 
+	}
+	}
+	return rv;
+}
+
+static gboolean
+process_single_extension (CERTCertExtension *extension,
+			  EASN1Object **retExtension)
+{
+	GString *str = g_string_new ("");
+	char *text;
+	EASN1Object *extensionItem;
+	SECOidTag oidTag = SECOID_FindOIDTag(&extension->id);
+
+	get_oid_text (&extension->id, &text);
+
+	extensionItem = e_asn1_object_new ();
+
+	e_asn1_object_set_display_name (extensionItem, text);
+	g_free (text);
+
+	if (extension->critical.data != NULL) {
+		if (extension->critical.data[0]) {
+			g_string_append (str, _("Critical"));
+		} else {
+			g_string_append (str, _("Not Critical"));
+		}
+	} else {
+		g_string_append (str, _("Not Critical"));
+	}
+	g_string_append (str, "\n");
+	if (!process_extension_data (oidTag, &extension->value, str)) {
+		g_string_free (str, TRUE);
+		return FALSE;
+	}
+
+	e_asn1_object_set_display_value (extensionItem, str->str);
+	g_string_free (str, TRUE);
+	*retExtension = extensionItem;
+	return TRUE;
+}
+
+static gboolean
+process_extensions (CERTCertExtension **extensions, 
+		    EASN1Object        *parentSequence)
+{
+	EASN1Object *extensionSequence = e_asn1_object_new ();
+	PRInt32 i;
+
+	e_asn1_object_set_display_name (extensionSequence, _("Extensions"));
+
+	for (i=0; extensions[i] != NULL; i++) {
+		EASN1Object *newExtension;
+
+		if (!process_single_extension (extensions[i],
+					       &newExtension))
+			return FALSE;
+
+		e_asn1_object_append_child (extensionSequence, newExtension);
+	}
+	e_asn1_object_append_child (parentSequence, extensionSequence);
+	return TRUE;
+}
+
+static gboolean
+process_name (CERTName *name, char **value)
+{
+	CERTRDN** rdns;
+	CERTRDN** rdn;
+	CERTAVA** avas;
+	CERTAVA* ava;
+	SECItem *decodeItem = NULL;
+	GString *final_string = g_string_new ("");
+
+	char *type;
+	GString *avavalue;
+	char *temp;
+	CERTRDN **lastRdn;
+
+	rdns = name->rdns;
+
+	lastRdn = rdns;
+
+	/* find last RDN */
+	lastRdn = rdns;
+	while (*lastRdn) lastRdn++;
+
+	/* The above whille loop will put us at the last member
+	 * of the array which is a NULL pointer.  So let's back
+	 * up one spot so that we have the last non-NULL entry in 
+	 * the array in preparation for traversing the 
+	 * RDN's (Relative Distinguished Name) in reverse order.
+	 */
+	lastRdn--;
+   
+	/*
+	 * Loop over name contents in _reverse_ RDN order appending to string
+	 * When building the Ascii string, NSS loops over these entries in 
+	 * reverse order, so I will as well.  The difference is that NSS
+	 * will always place them in a one line string separated by commas,
+	 * where I want each entry on a single line.  I can't just use a comma
+	 * as my delimitter because it is a valid character to have in the 
+	 * value portion of the AVA and could cause trouble when parsing.
+	 */
+	for (rdn = lastRdn; rdn >= rdns; rdn--) {
+		avas = (*rdn)->avas;
+		while ((ava = *avas++) != 0) {
+			if (!get_oid_text (&ava->type, &type))
+				return FALSE;
+
+			/* This function returns a string in UTF8 format. */
+			decodeItem = CERT_DecodeAVAValue(&ava->value);
+			if(!decodeItem) {
+				return FALSE;
+			}
+
+			avavalue = g_string_new_len ((char*)decodeItem->data, decodeItem->len);
+
+			SECITEM_FreeItem(decodeItem, PR_TRUE);
+
+			temp = g_strdup_printf (_("%s = %s"), type, avavalue->str);
+
+			g_string_append (final_string, temp);
+			g_string_append (final_string, "\n");
+			g_string_free (avavalue, TRUE);
+			g_free (temp);
+		}
+	}
+	*value = g_string_free (final_string, FALSE);
+	return TRUE;
+}
+
+static gboolean
+create_tbs_certificate_asn1_struct (ECert *cert, EASN1Object **seq)
+{
+	/*
+	**   TBSCertificate  ::=  SEQUENCE  {
+	**        version         [0]  EXPLICIT Version DEFAULT v1,
+	**        serialNumber         CertificateSerialNumber,
+	**        signature            AlgorithmIdentifier,
+	**        issuer               Name,
+	**        validity             Validity,
+	**        subject              Name,
+	**        subjectPublicKeyInfo SubjectPublicKeyInfo,
+	**        issuerUniqueID  [1]  IMPLICIT UniqueIdentifier OPTIONAL,
+	**                             -- If present, version shall be v2 or v3
+	**        subjectUniqueID [2]  IMPLICIT UniqueIdentifier OPTIONAL,
+	**                             -- If present, version shall be v2 or v3
+	**        extensions      [3]  EXPLICIT Extensions OPTIONAL
+	**                             -- If present, version shall be v3
+	**        }
+	**
+	** This is the ASN1 structure we should be dealing with at this point.
+	** The code in this method will assert this is the structure we're dealing
+	** and then add more user friendly text for that field.
+	*/
+	EASN1Object *sequence = e_asn1_object_new ();
+	char *text;
+	EASN1Object *subitem;
+	SECItem data; 
+
+	e_asn1_object_set_display_name (sequence, _("Certificate"));
+  
+	if (!process_version (&cert->priv->cert->version, &subitem))
+		return FALSE;
+	e_asn1_object_append_child (sequence, subitem);
+	g_object_unref (subitem);
+  
+	if (!process_serial_number_der (&cert->priv->cert->serialNumber, &subitem))
+		return FALSE;
+	e_asn1_object_append_child (sequence, subitem);
+	g_object_unref (subitem);
+
+
+	if (!process_sec_algorithm_id (&cert->priv->cert->signature, &subitem))
+		return FALSE;
+	e_asn1_object_set_display_name (subitem, _("Certificate Signature Algorithm"));
+	e_asn1_object_append_child (sequence, subitem);
+	g_object_unref (subitem);
+
+	process_name (&cert->priv->cert->issuer, &text);
+	subitem = e_asn1_object_new ();
+	e_asn1_object_set_display_value (subitem, text);
+	g_free (text);
+
+	e_asn1_object_set_display_name (subitem, _("Issuer"));
+	e_asn1_object_append_child (sequence, subitem);
+	g_object_unref (subitem);
+
+#if notyet
+	nsCOMPtr<nsIASN1Sequence> validitySequence = new nsNSSASN1Sequence();
+	nssComponent->GetPIPNSSBundleString(NS_LITERAL_STRING("CertDumpValidity").get(),
+					    text);
+	validitySequence->SetDisplayName(text);
+	asn1Objects->AppendElement(validitySequence, PR_FALSE);
+	nssComponent->GetPIPNSSBundleString(NS_LITERAL_STRING("CertDumpNotBefore").get(),
+					    text);
+	nsCOMPtr<nsIX509CertValidity> validityData;
+	GetValidity(getter_AddRefs(validityData));
+	PRTime notBefore, notAfter;
+	
+	validityData->GetNotBefore(&notBefore);
+	validityData->GetNotAfter(&notAfter);
+	validityData = 0;
+	rv = ProcessTime(notBefore, text.get(), validitySequence);
+	if (NS_FAILED(rv))
+		return rv;
+
+	nssComponent->GetPIPNSSBundleString(NS_LITERAL_STRING("CertDumpNotAfter").get(),
+					    text);
+	rv = ProcessTime(notAfter, text.get(), validitySequence);
+	if (NS_FAILED(rv))
+		return rv;
+#endif
+	
+	subitem = e_asn1_object_new ();
+	e_asn1_object_set_display_name (subitem, _("Subject"));
+
+	process_name (&cert->priv->cert->subject, &text);
+	e_asn1_object_set_display_value (subitem, text);
+	g_free (text);
+	e_asn1_object_append_child (sequence, subitem);
+	g_object_unref (subitem);
+
+	if (!process_subject_public_key_info (&cert->priv->cert->subjectPublicKeyInfo, sequence))
+		return FALSE;
+
+	/* Is there an issuerUniqueID? */
+	if (cert->priv->cert->issuerID.data) {
+		/* The issuerID is encoded as a bit string.
+		   The function ProcessRawBytes expects the
+		   length to be in bytes, so let's convert the
+		   length in a temporary SECItem
+		*/
+		data.data = cert->priv->cert->issuerID.data;
+		data.len  = cert->priv->cert->issuerID.len / 8;
+
+		subitem = e_asn1_object_new ();
+
+		e_asn1_object_set_display_name (subitem, _("Issuer Unique ID"));
+		process_raw_bytes (&data, &text);
+		e_asn1_object_set_display_value (subitem, text);
+		g_free (text);
+
+		e_asn1_object_append_child (sequence, subitem);
+	}
+
+	if (cert->priv->cert->subjectID.data) {
+		/* The subjectID is encoded as a bit string.
+		   The function ProcessRawBytes expects the
+		   length to be in bytes, so let's convert the
+		   length in a temporary SECItem
+		*/
+		data.data = cert->priv->cert->issuerID.data;
+		data.len  = cert->priv->cert->issuerID.len / 8;
+
+		subitem = e_asn1_object_new ();
+
+		e_asn1_object_set_display_name (subitem, _("Subject Unique ID"));
+		process_raw_bytes (&data, &text);
+		e_asn1_object_set_display_value (subitem, text);
+		g_free (text);
+
+		e_asn1_object_append_child (sequence, subitem);
+	}
+	if (cert->priv->cert->extensions) {
+		if (!process_extensions (cert->priv->cert->extensions, sequence))
+			return FALSE;
+	}
+
+	*seq = sequence;
+
+	return TRUE;
+}
+
+static gboolean
+create_asn1_struct (ECert *cert)
+{
+	EASN1Object *sequence;
+	SECItem temp;
+	char *text;
+
+	cert->priv->asn1 = e_asn1_object_new ();
+
+	if (cert->priv->cert->nickname)
+		e_asn1_object_set_display_name (cert->priv->asn1, cert->priv->cert->nickname);
+	else if (cert->priv->cn)
+		e_asn1_object_set_display_name (cert->priv->asn1, cert->priv->cn);
+	else
+		e_asn1_object_set_display_name (cert->priv->asn1, cert->priv->cert->subjectName);
+
+	/* This sequence will be contain the tbsCertificate, signatureAlgorithm,
+	   and signatureValue. */
+
+	if (!create_tbs_certificate_asn1_struct (cert, &sequence))
+		return FALSE;
+	e_asn1_object_append_child (cert->priv->asn1, sequence);
+	g_object_unref (sequence);
+
+	if (!process_sec_algorithm_id (&cert->priv->cert->signatureWrap.signatureAlgorithm, &sequence))
+		return FALSE;
+	e_asn1_object_set_display_name (sequence, _("Certificate Signature Algorithm"));
+	e_asn1_object_append_child (cert->priv->asn1, sequence);
+	g_object_unref (sequence);
+
+	sequence = e_asn1_object_new ();
+	e_asn1_object_set_display_name (sequence, _("Certificate Signature Value"));
+
+	/* The signatureWrap is encoded as a bit string.
+	   The function ProcessRawBytes expects the
+	   length to be in bytes, so let's convert the
+	   length in a temporary SECItem */
+	temp.data = cert->priv->cert->signatureWrap.signature.data;
+	temp.len  = cert->priv->cert->signatureWrap.signature.len / 8;
+	process_raw_bytes (&temp, &text);
+	e_asn1_object_set_display_value (sequence, text);
+	e_asn1_object_append_child (cert->priv->asn1, sequence);
+	g_free (text);
+
+	return TRUE;
+}
+
+EASN1Object*
+e_cert_get_asn1_struct (ECert *cert)
+{
+	if (!cert->priv->asn1)
+		create_asn1_struct (cert);
+
+	return g_object_ref (cert->priv->asn1);
+}
+
 gboolean
 e_cert_mark_for_deletion (ECert *cert)
 {