Mail formatter rewrite

All mail-parsing and formatting code has been moved to em-format.
Parsing is handeled by EMailParser class, formatting by EMailFormatter.
Both classes have registry which hold extensions - simple classes
that do actual parsing and formatting. Each supported mime-type
has it's own parser and formatter extension class.

1 files changed, 199 insertions, 0 deletions

diff --git a/em-format/e-mail-parser-application-smime.c b/em-format/e-mail-parser-application-smime.c
new file mode 100644
index 0000000000..12bce2fa56
--- /dev/null
+++ b/em-format/e-mail-parser-application-smime.c
@@ -0,0 +1,199 @@
+/*
+ * e-mail-parser-application-xpkcs7mime.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "e-mail-format-extensions.h"
+
+#include <glib-object.h>
+#include <glib/gi18n-lib.h>
+
+#include <em-format/e-mail-parser-extension.h>
+#include <em-format/e-mail-parser.h>
+#include <em-format/e-mail-part-utils.h>
+#include <e-util/e-util.h>
+
+#include <camel/camel.h>
+
+#include <string.h>
+
+typedef struct _EMailParserApplicationSMIME {
+	GObject parent;
+} EMailParserApplicationSMIME;
+
+typedef struct _EMailParserAppplicationSMIMEClass {
+	GObjectClass parent_class;
+} EMailParserApplicationSMIMEClass;
+
+static void e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface);
+static void e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface);
+
+G_DEFINE_TYPE_EXTENDED (
+	EMailParserApplicationSMIME,
+	e_mail_parser_application_smime,
+	G_TYPE_OBJECT,
+	0,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_EXTENSION,
+		e_mail_parser_mail_extension_interface_init)
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_MAIL_PARSER_EXTENSION,
+		e_mail_parser_parser_extension_interface_init));
+
+static const gchar* parser_mime_types[] = { "application/xpkcs7mime",
+					    "application/x-pkcs7-mime",
+					    "application/pkcs7-mime",
+					    "application/pkcs7-signature",
+					    "application/xpkcs7-signature",
+					    NULL };
+
+static GSList *
+empe_app_smime_parse (EMailParserExtension *extension,
+                       EMailParser *parser,
+                       CamelMimePart *part,
+                       GString *part_id,
+                       GCancellable *cancellable)
+{
+	CamelCipherContext *context;
+	CamelMimePart *opart;
+	CamelCipherValidity *valid;
+	GError *local_error = NULL;
+	GSList *parts, *iter;
+	CamelContentType *ct;
+
+	if (g_cancellable_is_cancelled (cancellable))
+		return NULL;
+
+	ct = camel_mime_part_get_content_type (part);
+	if (camel_content_type_is (ct, "application", "pkcs7-signature") ||
+	    camel_content_type_is (ct, "application", "xpkcs7-signature")) {
+		return g_slist_alloc ();
+	}
+
+	context = camel_smime_context_new (e_mail_parser_get_session (parser));
+
+	opart = camel_mime_part_new ();
+	valid = camel_cipher_context_decrypt_sync (
+			context, part, opart,
+			cancellable, &local_error);
+
+	e_mail_part_preserve_charset_in_content_type (part, opart);
+
+	if (valid == NULL) {
+		parts = e_mail_parser_error (
+			parser, cancellable,
+			_("Could not parse S/MIME message: %s"),
+			local_error->message ?
+				local_error->message :
+				_("Unknown error"));
+		g_clear_error (&local_error);
+	} else {
+		gint len = part_id->len;
+
+		g_string_append (part_id, ".encrypted");
+
+		parts = e_mail_parser_parse_part (
+			parser, opart, part_id, cancellable);
+
+		g_string_truncate (part_id, len);
+
+		/* Update validity flags of all the involved subp-arts */
+		for (iter = parts; iter; iter = iter->next) {
+
+			EMailPart *mail_part = iter->data;
+			if (!mail_part)
+				continue;
+
+			e_mail_part_update_validity (mail_part, valid,
+				E_MAIL_PART_VALIDITY_ENCRYPTED |
+				E_MAIL_PART_VALIDITY_SMIME);
+
+		}
+
+		/* Add a widget with details about the encryption, but only when
+		 * the encrypted isn't itself secured, in that case it has created
+		 * the button itself */
+		if (!e_mail_part_is_secured (opart)) {
+			GSList *button;
+			EMailPart *mail_part;
+			g_string_append (part_id, ".encrypted.button");
+
+			button = e_mail_parser_parse_part_as (
+					parser, part, part_id,
+					"application/vnd.evolution.widget.secure-button",
+					cancellable);
+			if (button && button->data) {
+				mail_part = button->data;
+
+				e_mail_part_update_validity (mail_part, valid,
+					E_MAIL_PART_VALIDITY_ENCRYPTED |
+					E_MAIL_PART_VALIDITY_SMIME);
+			}
+
+			parts = g_slist_concat (parts, button);
+
+			g_string_truncate (part_id, len);
+		}
+
+		camel_cipher_validity_free (valid);
+	}
+
+	g_object_unref (opart);
+	g_object_unref (context);
+
+	return parts;
+}
+
+static guint32
+empe_app_smime_get_flags (EMailParserExtension *extension)
+{
+	return E_MAIL_PARSER_EXTENSION_INLINE;
+}
+
+static const gchar **
+empe_application_smime_mime_types (EMailExtension *extension)
+{
+	return parser_mime_types;
+}
+
+static void
+e_mail_parser_application_smime_class_init (EMailParserApplicationSMIMEClass *klass)
+{
+	e_mail_parser_application_smime_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *interface)
+{
+	interface->parse = empe_app_smime_parse;
+	interface->get_flags = empe_app_smime_get_flags;
+}
+
+static void
+e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *interface)
+{
+	interface->mime_types = empe_application_smime_mime_types;
+}
+
+static void
+e_mail_parser_application_smime_init (EMailParserApplicationSMIME *parser)
+{
+
+}