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-rw-r--r--em-format/e-mail-parser-multipart-signed.c252
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diff --git a/em-format/e-mail-parser-multipart-signed.c b/em-format/e-mail-parser-multipart-signed.c
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+++ b/em-format/e-mail-parser-multipart-signed.c
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+/*
+ * e-mail-parser-multipart-signed.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 <glib/gi18n-lib.h>
+#include <camel/camel.h>
+
+typedef struct _EMailParserMultipartSigned {
+ GObject parent;
+} EMailParserMultipartSigned;
+
+typedef struct _EMailParserMultipartSignedClass {
+ GObjectClass parent_class;
+} EMailParserMultipartSignedClass;
+
+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 (
+ EMailParserMultipartSigned,
+ e_mail_parser_multipart_signed,
+ 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[] = { "multipart/signed",
+ "application/pgp-signature",
+ NULL };
+
+static GSList *
+empe_mp_signed_parse (EMailParserExtension *extension,
+ EMailParser *parser,
+ CamelMimePart *part,
+ GString *part_id,
+ GCancellable *cancellable)
+{
+ CamelMimePart *cpart;
+ CamelMultipartSigned *mps;
+ CamelCipherContext *cipher = NULL;
+ CamelSession *session;
+ guint32 validity_type;
+ GSList *parts;
+ CamelCipherValidity *valid;
+ GError *local_error = NULL;
+ gint i, nparts, len;
+ gboolean secured;
+
+ if (g_cancellable_is_cancelled (cancellable))
+ return NULL;
+
+ /* If the part is application/pgp-signature sub-part then skip it. */
+ if (!CAMEL_IS_MULTIPART (part)) {
+ CamelContentType *ct;
+ ct = camel_mime_part_get_content_type (CAMEL_MIME_PART (part));
+ if (camel_content_type_is (ct, "application", "pgp-signature")) {
+ return g_slist_alloc ();
+ }
+ }
+
+ mps = (CamelMultipartSigned *) camel_medium_get_content ((CamelMedium *) part);
+ if (!CAMEL_IS_MULTIPART_SIGNED (mps)
+ || (cpart = camel_multipart_get_part ((CamelMultipart *) mps,
+ CAMEL_MULTIPART_SIGNED_CONTENT)) == NULL) {
+ parts = e_mail_parser_error (
+ parser, cancellable,
+ _("Could not parse MIME message. "
+ "Displaying as source."));
+
+ parts = g_slist_concat (parts,
+ e_mail_parser_parse_part_as (
+ parser, part, part_id,
+ "application/vnd.evolution.source",
+ cancellable));
+ return parts;
+ }
+
+ session = e_mail_parser_get_session (parser);
+ /* FIXME: Should be done via a plugin interface */
+ /* FIXME: duplicated in em-format-html-display.c */
+ if (mps->protocol) {
+#ifdef ENABLE_SMIME
+ if (g_ascii_strcasecmp("application/x-pkcs7-signature", mps->protocol) == 0
+ || g_ascii_strcasecmp("application/pkcs7-signature", mps->protocol) == 0) {
+ cipher = camel_smime_context_new (session);
+ validity_type = E_MAIL_PART_VALIDITY_SMIME;
+ } else {
+#endif
+ if (g_ascii_strcasecmp("application/pgp-signature", mps->protocol) == 0) {
+ cipher = camel_gpg_context_new (session);
+ validity_type = E_MAIL_PART_VALIDITY_PGP;
+ }
+#ifdef ENABLE_SMIME
+ }
+#endif
+ }
+
+ if (cipher == NULL) {
+ parts = e_mail_parser_error (
+ parser, cancellable,
+ _("Unsupported signature format"));
+
+ parts = g_slist_concat (parts,
+ e_mail_parser_parse_part_as (
+ parser, part, part_id,
+ "multipart/mixed", cancellable));
+
+ return parts;
+ }
+
+ valid = camel_cipher_context_verify_sync (
+ cipher, part, cancellable, &local_error);
+ if (valid == NULL) {
+ parts = e_mail_parser_error (
+ parser, cancellable,
+ _("Error verifying signature: %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,
+ "multipart/mixed", cancellable));
+
+ g_object_unref (cipher);
+ return parts;
+ }
+
+ nparts = camel_multipart_get_number (CAMEL_MULTIPART (mps));
+ secured = FALSE;
+ len = part_id->len;
+ parts = NULL;
+ for (i = 0; i < nparts; i++) {
+ CamelMimePart *subpart;
+ GSList *mail_parts, *iter;
+ subpart = camel_multipart_get_part (CAMEL_MULTIPART (mps), i);
+
+ g_string_append_printf(part_id, ".signed.%d", i);
+
+ mail_parts = e_mail_parser_parse_part (
+ parser, subpart, part_id, cancellable);
+
+ g_string_truncate (part_id, len);
+
+ if (!secured)
+ secured = e_mail_part_is_secured (subpart);
+
+ for (iter = mail_parts; iter; iter = iter->next) {
+ EMailPart *mail_part;
+
+ mail_part = iter->data;
+ if (!mail_part)
+ continue;
+
+ e_mail_part_update_validity (mail_part, valid,
+ validity_type | E_MAIL_PART_VALIDITY_SIGNED);
+ }
+
+ parts = g_slist_concat (parts, 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 (!secured) {
+ GSList *button;
+ EMailPart *mail_part;
+ g_string_append (part_id, ".signed.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,
+ validity_type | E_MAIL_PART_VALIDITY_SIGNED);
+ }
+
+ parts = g_slist_concat (parts, button);
+
+ g_string_truncate (part_id, len);
+ }
+
+ camel_cipher_validity_free (valid);
+
+ g_object_unref (cipher);
+
+ return parts;
+}
+
+static const gchar **
+empe_mp_signed_mime_types (EMailExtension *extension)
+{
+ return parser_mime_types;
+}
+
+static void
+e_mail_parser_multipart_signed_class_init (EMailParserMultipartSignedClass *klass)
+{
+ e_mail_parser_multipart_signed_parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+e_mail_parser_parser_extension_interface_init (EMailParserExtensionInterface *iface)
+{
+ iface->parse = empe_mp_signed_parse;
+}
+
+static void
+e_mail_parser_mail_extension_interface_init (EMailExtensionInterface *iface)
+{
+ iface->mime_types = empe_mp_signed_mime_types;
+}
+
+static void
+e_mail_parser_multipart_signed_init (EMailParserMultipartSigned *parser)
+{
+
+}