1 files changed, 188 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..ae008dca02
--- /dev/null
+++ b/em-format/e-mail-parser-inlinepgp-encrypted.c
@@ -0,0 +1,188 @@
+/*
+ * 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 <string.h>
+#include <glib/gi18n-lib.h>
+
+#include <e-util/e-util.h>
+
+#include "e-mail-parser-extension.h"
+#include "e-mail-part-utils.h"
+
+typedef EMailParserExtension EMailParserInlinePGPEncrypted;
+typedef EMailParserExtensionClass EMailParserInlinePGPEncryptedClass;
+
+GType e_mail_parser_inline_pgp_encrypted_get_type (void);
+
+G_DEFINE_TYPE (
+	EMailParserInlinePGPEncrypted,
+	e_mail_parser_inline_pgp_encrypted,
+	E_TYPE_MAIL_PARSER_EXTENSION)
+
+static const gchar *parser_mime_types[] = {
+	"application/x-inlinepgp-encrypted",
+	NULL
+};
+
+static gboolean
+empe_inlinepgp_encrypted_parse (EMailParserExtension *extension,
+                                EMailParser *parser,
+                                CamelMimePart *part,
+                                GString *part_id,
+                                GCancellable *cancellable,
+                                GQueue *out_mail_parts)
+{
+	CamelCipherContext *cipher;
+	CamelCipherValidity *valid;
+	CamelMimePart *opart;
+	CamelDataWrapper *dw;
+	gchar *mime_type;
+	gint len;
+	GQueue work_queue = G_QUEUE_INIT;
+	GList *head, *link;
+	GError *local_error = NULL;
+
+	if (g_cancellable_is_cancelled (cancellable) ||
+	    /* avoid recursion */
+	    (part_id->str && part_id->len > 20 && g_str_has_suffix (part_id->str, ".inlinepgp_encrypted")))
+		return FALSE;
+
+	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 (local_error != NULL) {
+		e_mail_parser_error (
+			parser, out_mail_parts,
+			_("Could not parse PGP message: %s"),
+			local_error->message);
+		g_error_free (local_error);
+
+		e_mail_parser_parse_part_as (
+			parser,
+			part, part_id,
+			"application/vnd.evolution.source",
+			cancellable, out_mail_parts);
+
+		g_object_unref (cipher);
+		g_object_unref (opart);
+
+		return TRUE;
+	}
+
+	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;
+
+		snoop = e_mail_part_snoop_type (opart);
+
+		if (snoop != NULL) {
+			camel_data_wrapper_set_mime_type (dw, snoop);
+
+			/* Set the MIME type on the 'opart' itself as well.
+			 * If it's "text/plain", then we want the TextPlain
+			 * parser extension to treat it as "text/plain" and
+			 * NOT wrap it as an attachment. */
+			camel_data_wrapper_set_mime_type (
+				CAMEL_DATA_WRAPPER (opart), 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");
+
+	e_mail_parser_parse_part_as (
+		parser, opart, part_id,
+		camel_data_wrapper_get_mime_type (dw),
+		cancellable, &work_queue);
+
+	g_string_truncate (part_id, len);
+
+	head = g_queue_peek_head_link (&work_queue);
+
+	for (link = head; link != NULL; link = g_list_next (link)) {
+		EMailPart *mail_part = link->data;
+
+		e_mail_part_update_validity (
+			mail_part, valid,
+			E_MAIL_PART_VALIDITY_ENCRYPTED |
+			E_MAIL_PART_VALIDITY_PGP);
+	}
+
+	e_queue_transfer (&work_queue, out_mail_parts);
+
+	/* 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)) {
+		EMailPart *mail_part;
+
+		g_string_append (part_id, ".inlinepgp_encrypted.button");
+
+		e_mail_parser_parse_part_as (
+			parser, part, part_id,
+			"application/vnd.evolution.widget.secure-button",
+			cancellable, &work_queue);
+
+		mail_part = g_queue_peek_head (&work_queue);
+		if (mail_part != NULL)
+			e_mail_part_update_validity (
+				mail_part, valid,
+				E_MAIL_PART_VALIDITY_ENCRYPTED |
+				E_MAIL_PART_VALIDITY_PGP);
+
+		e_queue_transfer (&work_queue, out_mail_parts);
+
+		g_string_truncate (part_id, len);
+	}
+
+	/* Clean Up */
+	camel_cipher_validity_free (valid);
+	g_object_unref (opart);
+	g_object_unref (cipher);
+
+	return TRUE;
+}
+
+static void
+e_mail_parser_inline_pgp_encrypted_class_init (EMailParserExtensionClass *class)
+{
+	class->mime_types = parser_mime_types;
+	class->priority = G_PRIORITY_LOW;
+	class->parse = empe_inlinepgp_encrypted_parse;
+}
+
+static void
+e_mail_parser_inline_pgp_encrypted_init (EMailParserExtension *extension)
+{
+}