New virtual class for manipulating cryptographic message syntax messages

2001-05-31  Jeffrey Stedfast  <fejj@ximian.com>

	* camel-cms-context.[c,h]: New virtual class for manipulating
	cryptographic message syntax messages (like S/MIME).

	* camel-smime-context.[c,h]: Modified to inherit from the
	CamelCMSContext class rather than the CamelCipherContext class.

	* camel-smime.[c,h]: Removed - just use camel-smime-context
	directly.

	* camel-smime-utils.[c,h]: New source files. Moved the 2 useful
	functions from camel-smime.[c,h] into here.

svn path=/trunk/; revision=10065

1 files changed, 324 insertions, 0 deletions

diff --git a/camel/camel-cms-context.c b/camel/camel-cms-context.c
new file mode 100644
index 0000000000..dea3951877
--- /dev/null
+++ b/camel/camel-cms-context.c
@@ -0,0 +1,324 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ *  Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ *  Copyright 2001 Ximian, Inc. (www.ximian.com)
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "camel-cms-context.h"
+
+#include <glib.h>
+
+#ifdef ENABLE_THREADS
+#include <pthread.h>
+#define CMS_LOCK(ctx)   g_mutex_lock (((CamelCMSContext *) ctx)->priv->lock)
+#define CMS_UNLOCK(ctx) g_mutex_unlock (((CamelCMSContext *) ctx)->priv->lock);
+#else
+#define CMS_LOCK(ctx)
+#define CMS_UNLOCK(ctx)
+#endif
+
+#define d(x)
+
+#define CCC_CLASS(o) CAMEL_CMS_CONTEXT_CLASS(CAMEL_OBJECT_GET_CLASS(o))
+
+struct _CamelCMSContextPrivate {
+#ifdef ENABLE_THREADS
+	GMutex *lock;
+#endif
+};
+
+static CamelMimeMessage *cms_sign      (CamelCMSContext *ctx, CamelMimeMessage *message,
+					const char *userid, gboolean signing_time,
+					gboolean detached, CamelException *ex);
+
+static CamelMimeMessage *cms_certsonly (CamelCMSContext *ctx, CamelMimeMessage *message,
+					const char *userid, GPtrArray *recipients,
+					CamelException *ex);
+
+static CamelMimeMessage *cms_encrypt   (CamelCMSContext *ctx, CamelMimeMessage *message,
+					const char *userid, GPtrArray *recipients, 
+					CamelException *ex);
+
+static CamelMimeMessage *cms_envelope  (CamelCMSContext *ctx, CamelMimeMessage *message,
+					const char *userid, GPtrArray *recipients, 
+					CamelException *ex);
+
+static CamelMimeMessage *cms_decode    (CamelCMSContext *ctx, CamelMimeMessage *message,
+					CamelCMSValidityInfo **info, CamelException *ex);
+
+static CamelObjectClass *parent_class;
+
+static void
+camel_cms_context_init (CamelCMSContext *context)
+{
+	context->priv = g_new0 (struct _CamelCMSContextPrivate, 1);
+#ifdef ENABLE_THREADS
+	context->priv->lock = g_mutex_new ();
+#endif
+}
+
+static void
+camel_cms_context_finalise (CamelObject *o)
+{
+	CamelCMSContext *context = (CamelCMSContext *)o;
+	
+	camel_object_unref (CAMEL_OBJECT (context->session));
+	
+#ifdef ENABLE_THREADS
+	g_mutex_free (context->priv->lock);
+#endif
+	
+	g_free (context->priv);
+}
+
+static void
+camel_cms_context_class_init (CamelCMSContextClass *camel_cms_context_class)
+{
+	parent_class = camel_type_get_global_classfuncs (camel_object_get_type ());
+	
+	camel_cms_context_class->sign = cms_sign;
+	camel_cms_context_class->certsonly = cms_certsonly;
+	camel_cms_context_class->encrypt = cms_encrypt;
+	camel_cms_context_class->envelope = cms_envelope;
+	camel_cms_context_class->decode = cms_decode;
+}
+
+CamelType
+camel_cms_context_get_type (void)
+{
+	static CamelType type = CAMEL_INVALID_TYPE;
+	
+	if (type == CAMEL_INVALID_TYPE) {
+		type = camel_type_register (camel_object_get_type (),
+					    "CamelCMSContext",
+					    sizeof (CamelCMSContext),
+					    sizeof (CamelCMSContextClass),
+					    (CamelObjectClassInitFunc) camel_cms_context_class_init,
+					    NULL,
+					    (CamelObjectInitFunc) camel_cms_context_init,
+					    (CamelObjectFinalizeFunc) camel_cms_context_finalise);
+	}
+	
+	return type;
+}
+
+
+/**
+ * camel_cms_context_new:
+ * @session: CamelSession
+ * @encryption_key: preferred encryption key nickname
+ *
+ * This creates a new CamelCMSContext object which is used to sign,
+ * encrypt, envelope and decode CMS messages.
+ *
+ * Return value: the new CamelCMSContext
+ **/
+CamelCMSContext *
+camel_cms_context_new (CamelSession *session)
+{
+	CamelCMSContext *context;
+	
+	g_return_val_if_fail (session != NULL, NULL);
+	g_return_val_if_fail (CAMEL_IS_SESSION (session), NULL);
+	
+	context = CAMEL_CMS_CONTEXT (camel_object_new (CAMEL_CMS_CONTEXT_TYPE));
+	
+	camel_object_ref (CAMEL_OBJECT (session));
+	context->session = session;
+	
+	return context;
+}
+
+
+/**
+ * camel_cms_context_construct:
+ * @context: CMS Context
+ * @session: CamelSession
+ *
+ * Construct the CMS Context.
+ **/
+void
+camel_cms_context_construct (CamelCMSContext *context, CamelSession *session)
+{
+	g_return_if_fail (CAMEL_IS_CMS_CONTEXT (context));
+	g_return_if_fail (CAMEL_IS_SESSION (session));
+	
+	camel_object_ref (CAMEL_OBJECT (session));
+	context->session = session;
+}
+
+
+static CamelMimeMessage *
+cms_sign (CamelCMSContext *ctx, CamelMimeMessage *message,
+	  const char *userid, gboolean signing_time,
+	  gboolean detached, CamelException *ex)
+{
+	g_warning ("Using default CamelCMSContext::sign() method.");
+	
+	return NULL;
+}
+
+
+CamelMimeMessage *
+camel_cms_sign (CamelCMSContext *ctx, CamelMimeMessage *message,
+		const char *userid, gboolean signing_time,
+		gboolean detached, CamelException *ex)
+{
+	g_return_val_if_fail (CAMEL_IS_CMS_CONTEXT (ctx), NULL);
+	g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
+	g_return_val_if_fail (userid != NULL, NULL);
+	
+	return CCC_CLASS (ctx)->sign (ctx, message, userid, signing_time, detached, ex);
+}
+
+
+static CamelMimeMessage *
+cms_certsonly (CamelCMSContext *ctx, CamelMimeMessage *message,
+	       const char *userid, GPtrArray *recipients,
+	       CamelException *ex)
+{
+	g_warning ("Using default CamelCMSContext::certsonly() method.");
+	
+	return NULL;
+}
+
+
+CamelMimeMessage *
+camel_cms_certsonly (CamelCMSContext *ctx, CamelMimeMessage *message,
+		     const char *userid, GPtrArray *recipients,
+		     CamelException *ex)
+{
+	g_return_val_if_fail (CAMEL_IS_CMS_CONTEXT (ctx), NULL);
+	g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
+	g_return_val_if_fail (userid != NULL, NULL);
+	g_return_val_if_fail (recipients != NULL, NULL);
+	
+	return CCC_CLASS (ctx)->certsonly (ctx, message, userid, recipients, ex);
+}
+
+
+static CamelMimeMessage *
+cms_envelope (CamelCMSContext *ctx, CamelMimeMessage *message,
+	      const char *userid, GPtrArray *recipients, 
+	      CamelException *ex)
+{
+	g_warning ("Using default CamelCMSContext::envelope() method.");
+	
+	return NULL;
+}
+
+
+CamelMimeMessage *
+camel_cms_envelope (CamelCMSContext *ctx, CamelMimeMessage *message,
+		    const char *userid, GPtrArray *recipients, 
+		    CamelException *ex)
+{
+	g_return_val_if_fail (CAMEL_IS_CMS_CONTEXT (ctx), NULL);
+	g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
+	g_return_val_if_fail (userid != NULL, NULL);
+	g_return_val_if_fail (recipients != NULL, NULL);
+	
+	return CCC_CLASS (ctx)->envelope (ctx, message, userid, recipients, ex);
+}
+
+
+static CamelMimeMessage *
+cms_encrypt (CamelCMSContext *ctx, CamelMimeMessage *message,
+	     const char *userid, GPtrArray *recipients, 
+	     CamelException *ex)
+{
+	g_warning ("Using default CamelCMSContext::encrypt() method.");
+	
+	return NULL;
+}
+
+
+CamelMimeMessage *
+camel_cms_encrypt (CamelCMSContext *ctx, CamelMimeMessage *message,
+		   const char *userid, GPtrArray *recipients, 
+		   CamelException *ex)
+{
+	g_return_val_if_fail (CAMEL_IS_CMS_CONTEXT (ctx), NULL);
+	g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
+	g_return_val_if_fail (userid != NULL, NULL);
+	g_return_val_if_fail (recipients != NULL, NULL);
+	
+	return CCC_CLASS (ctx)->encrypt (ctx, message, userid, recipients, ex);
+}
+
+
+static CamelMimeMessage *
+cms_decode (CamelCMSContext *ctx, CamelMimeMessage *message,
+	    CamelCMSValidityInfo **info, CamelException *ex)
+{
+	g_warning ("Using default CamelCMSContext::decode() method.");
+	
+	return NULL;
+}
+
+
+CamelMimeMessage *
+camel_cms_decode (CamelCMSContext *ctx, CamelMimeMessage *message,
+		  CamelCMSValidityInfo **info, CamelException *ex)
+{
+	g_return_val_if_fail (CAMEL_IS_CMS_CONTEXT (ctx), NULL);
+	g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
+	
+	return CCC_CLASS (ctx)->decode (ctx, message, info, ex);
+}
+
+
+void
+camel_cms_signer_free (CamelCMSSigner *signer)
+{
+	CamelCMSSigner *next;
+	
+	if (!signer)
+		return;
+	
+	while (signer) {
+		next = signer->next;
+		g_free (signer->signercn);
+		g_free (signer->status);
+		g_free (signer);
+		signer = next;
+	}
+}
+
+
+void
+camel_cms_validity_info_free (CamelCMSValidityInfo *info)
+{
+	CamelCMSValidityInfo *next;
+	
+	if (!info)
+		return;
+	
+	while (info) {
+		next = info->next;
+		if (info->type == CAMEL_CMS_TYPE_SIGNED)
+			camel_cms_signer_free (info->signers);
+		g_free (info);
+		info = next;
+	}
+}