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-rw-r--r--camel/camel-smime-utils.c126
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diff --git a/camel/camel-smime-utils.c b/camel/camel-smime-utils.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ * Copyright 2001 Ximian, Inc. (www.ximian.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "camel-smime-utils.h"
+#include "camel-multipart.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define d(x) x
+
+/** rfc2633 stuff (aka S/MIME v3) ********************************/
+
+gboolean
+camel_smime_is_smime_v3_signed (CamelMimePart *mime_part)
+{
+ CamelDataWrapper *wrapper;
+ CamelMultipart *mp;
+ CamelMimePart *part;
+ CamelContentType *type;
+ const gchar *param, *micalg;
+ int nparts;
+
+ /* check that we have a multipart/signed */
+ type = camel_mime_part_get_content_type (mime_part);
+ if (!header_content_type_is (type, "multipart", "signed"))
+ return FALSE;
+
+ /* check that we have a protocol param with the value: "application/pkcs7-signature" */
+ param = header_content_type_param (type, "protocol");
+ if (!param || g_strcasecmp (param, "application/pkcs7-signature"))
+ return FALSE;
+
+ /* check that we have a micalg parameter */
+ micalg = header_content_type_param (type, "micalg");
+ if (!micalg)
+ return FALSE;
+
+ /* check that we have exactly 2 subparts */
+ wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
+ mp = CAMEL_MULTIPART (wrapper);
+ nparts = camel_multipart_get_number (mp);
+ if (nparts != 2)
+ return FALSE;
+
+ /* The first part may be of any type except for
+ * application/pkcs7-signature - check it. */
+ part = camel_multipart_get_part (mp, 0);
+ type = camel_mime_part_get_content_type (part);
+ if (header_content_type_is (type, "application", "pkcs7-signature"))
+ return FALSE;
+
+ /* The second part should be application/pkcs7-signature. */
+ part = camel_multipart_get_part (mp, 1);
+ type = camel_mime_part_get_content_type (part);
+ if (!header_content_type_is (type, "application", "pkcs7-signature"))
+ return FALSE;
+
+ return TRUE;
+}
+
+gboolean
+camel_smime_is_smime_v3_encrypted (CamelMimePart *mime_part)
+{
+ char *types[] = { "p7m", "p7c", "p7s", NULL };
+ const gchar *param, *filename;
+ CamelContentType *type;
+ int i;
+
+ /* check that we have a application/pkcs7-mime part */
+ type = camel_mime_part_get_content_type (mime_part);
+ if (header_content_type_is (type, "application", "pkcs7-mime")) {
+ /* check to make sure it's an encrypted pkcs7-mime part? */
+ return TRUE;
+ }
+
+ if (header_content_type_is (type, "application", "octent-stream")) {
+ /* check to see if we have a paremeter called "smime-type" */
+ param = header_content_type_param (type, "smime-type");
+ if (param)
+ return TRUE;
+
+ /* check to see if there is a name param and if it has a smime extension */
+ param = header_content_type_param (type, "smime-type");
+ if (param && *param && strlen (param) > 4) {
+ for (i = 0; types[i]; i++)
+ if (!g_strcasecmp (param + strlen (param)-4, types[i]))
+ return TRUE;
+ }
+
+ /* check to see if there is a name param and if it has a smime extension */
+ filename = camel_mime_part_get_filename (mime_part);
+ if (filename && *filename && strlen (filename) > 4) {
+ for (i = 0; types[i]; i++)
+ if (!g_strcasecmp (filename + strlen (filename)-4, types[i]))
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}