From fb099f5619f60f6c47658c052fae8d9a597b86d6 Mon Sep 17 00:00:00 2001 From: Jeffrey Stedfast Date: Thu, 31 May 2001 20:15:35 +0000 Subject: New virtual class for manipulating cryptographic message syntax messages 2001-05-31 Jeffrey Stedfast * camel-cms-context.[c,h]: New virtual class for manipulating cryptographic message syntax messages (like S/MIME). * camel-smime-context.[c,h]: Modified to inherit from the CamelCMSContext class rather than the CamelCipherContext class. * camel-smime.[c,h]: Removed - just use camel-smime-context directly. * camel-smime-utils.[c,h]: New source files. Moved the 2 useful functions from camel-smime.[c,h] into here. svn path=/trunk/; revision=10065 --- camel/camel-smime-utils.c | 126 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 camel/camel-smime-utils.c (limited to 'camel/camel-smime-utils.c') diff --git a/camel/camel-smime-utils.c b/camel/camel-smime-utils.c new file mode 100644 index 0000000000..cf588898f3 --- /dev/null +++ b/camel/camel-smime-utils.c @@ -0,0 +1,126 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * Authors: Jeffrey Stedfast + * + * 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 +#endif + +#include "camel-smime-utils.h" +#include "camel-multipart.h" + +#include +#include +#include + +#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; +} -- cgit v1.2.3