From 5b8340563c271fb684a88c6e5bb6dd3bfb629058 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Dan=20Vr=C3=A1til?= Date: Wed, 6 Jun 2012 15:27:19 +0200 Subject: 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. --- em-format/e-mail-parser-multipart-signed.c | 252 +++++++++++++++++++++++++++++ 1 file changed, 252 insertions(+) create mode 100644 em-format/e-mail-parser-multipart-signed.c (limited to 'em-format/e-mail-parser-multipart-signed.c') diff --git a/em-format/e-mail-parser-multipart-signed.c b/em-format/e-mail-parser-multipart-signed.c new file mode 100644 index 0000000000..37bedc91f0 --- /dev/null +++ b/em-format/e-mail-parser-multipart-signed.c @@ -0,0 +1,252 @@ +/* + * 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 + * + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include "e-mail-format-extensions.h" + +#include +#include +#include + +#include +#include + +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) +{ + +} -- cgit v1.2.3