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, 205 insertions, 0 deletions

diff --git a/em-format/e-mail-parser-inlinepgp-encrypted.c b/em-format/e-mail-parser-inlinepgp-encrypted.c
new file mode 100644
index 0000000000..5395b7be7e
--- /dev/null
+++ b/em-format/e-mail-parser-inlinepgp-encrypted.c
@@ -0,0 +1,205 @@
+/*
+ * e-mail-parser-inlinepgp-encrypted.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 <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 <glib/gi18n-lib.h>
+#include <camel/camel.h>
+
+#include <string.h>
+
+typedef struct _EMailParserInlinePGPEncrypted {
+	GObject parent;
+} EMailParserInlinePGPEncrypted;
+
+typedef struct _EMailParserInlinePGPEncryptedClass {
+	GObjectClass parent_class;
+} EMailParserInlinePGPEncryptedClass;
+
+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 (
+	EMailParserInlinePGPEncrypted,
+	e_mail_parser_inline_pgp_encrypted,
+	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/x-inlinepgp-encrypted",
+					    NULL };
+
+static GSList *
+empe_inlinepgp_encrypted_parse (EMailParserExtension *extension,
+                                EMailParser *parser,
+                                CamelMimePart *part,
+                                GString *part_id,
+                                GCancellable *cancellable)
+{
+	CamelCipherContext *cipher;
+	CamelCipherValidity *valid;
+	CamelMimePart *opart;
+	CamelDataWrapper *dw;
+	gchar *mime_type;
+	gint len;
+	GError *local_error = NULL;
+	GSList *parts, *iter;
+
+	if (g_cancellable_is_cancelled (cancellable))
+		return NULL;
+
+	cipher = camel_gpg_context_new (e_mail_parser_get_session (parser));
+
+	opart = camel_mime_part_new ();
+
+	/* Decrypt the message */
+	valid = camel_cipher_context_decrypt_sync (
+		cipher, part, opart, cancellable, &local_error);
+
+	if (!valid) {
+		parts = e_mail_parser_error (
+				parser, cancellable,
+				_("Could not parse PGP message: %s"),
+				local_error->message ?
+					local_error->message :
+					_("Unknown error"));
+		g_clear_error (&local_error);
+
+		parts = g_slist_concat (parts,
+				e_mail_parser_parse_part_as (parser,
+					part, part_id,
+				 	"application/vnd.evolution.source",
+					cancellable));
+
+		g_object_unref (cipher);
+		g_object_unref (opart);
+		return parts;
+	}
+
+	dw = camel_medium_get_content ((CamelMedium *) opart);
+	mime_type = camel_data_wrapper_get_mime_type (dw);
+
+	/* this ensures to show the 'opart' as inlined, if possible */
+	if (mime_type && g_ascii_strcasecmp (mime_type, "application/octet-stream") == 0) {
+		const gchar *snoop = e_mail_part_snoop_type (opart);
+
+		if (snoop)
+			camel_data_wrapper_set_mime_type (dw, snoop);
+	}
+
+	e_mail_part_preserve_charset_in_content_type (part, opart);
+	g_free (mime_type);
+
+	/* Pass it off to the real formatter */
+	len = part_id->len;
+	g_string_append (part_id, ".inlinepgp_encrypted");
+
+	parts = e_mail_parser_parse_part_as (
+			parser, opart, part_id,
+			camel_data_wrapper_get_mime_type (dw), cancellable);
+
+	g_string_truncate (part_id, len);
+
+	for (iter = parts; iter; iter = iter->next) {
+		EMailPart *mail_part;
+
+		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_PGP);
+	}
+
+	/* 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, ".inlinepgp_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_PGP);
+		}
+
+		parts = g_slist_concat (parts, button);
+
+		g_string_truncate (part_id, len);
+	}
+
+	/* Clean Up */
+	camel_cipher_validity_free (valid);
+	g_object_unref (opart);
+	g_object_unref (cipher);
+
+	return parts;
+}
+
+static const gchar **
+empe_inlinepgp_encrypted_mime_types (EMailExtension *extension)
+{
+	return parser_mime_types;
+}
+
+static void
+e_mail_parser_inline_pgp_encrypted_class_init (EMailParserInlinePGPEncryptedClass *klass)
+{
+	e_mail_parser_inline_pgp_encrypted_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
+{
+	iface->parse = empe_inlinepgp_encrypted_parse;
+}
+
+static void
+e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+	iface->mime_types = empe_inlinepgp_encrypted_mime_types;
+}
+
+static void
+e_mail_parser_inline_pgp_encrypted_init (EMailParserInlinePGPEncrypted *parser)
+{
+
+}