- ret = g_mime_multipart_encrypted_decrypt (GMIME_MULTIPART_ENCRYPTED (part),
- GMIME_DECRYPT_NONE,
- notmuch_message_properties_value (list),
- decrypt_result, err);
+ if (GMIME_IS_MULTIPART_ENCRYPTED (part)) {
+ ret = g_mime_multipart_encrypted_decrypt (GMIME_MULTIPART_ENCRYPTED (part),
+ GMIME_DECRYPT_NONE,
+ notmuch_message_properties_value (list),
+ decrypt_result, err);
+ } else if (GMIME_IS_APPLICATION_PKCS7_MIME (part)) {
+ GMimeApplicationPkcs7Mime *pkcs7 = GMIME_APPLICATION_PKCS7_MIME (part);
+ GMimeSecureMimeType type = g_mime_application_pkcs7_mime_get_smime_type (pkcs7);
+ if (type == GMIME_SECURE_MIME_TYPE_ENVELOPED_DATA) {
+ ret = g_mime_application_pkcs7_mime_decrypt (pkcs7,
+ GMIME_DECRYPT_NONE,
+ notmuch_message_properties_value (list),
+ decrypt_result, err);
+ }
+ }