diff options
Diffstat (limited to 'em-format/e-mail-parser-application-smime.c')
| -rw-r--r-- | em-format/e-mail-parser-application-smime.c | 199 |
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) +{ + +} |