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-rw-r--r--camel/ChangeLog4
-rw-r--r--camel/Makefile.am2
-rw-r--r--camel/camel-multipart-encrypted.c329
-rw-r--r--camel/camel-multipart-encrypted.h83
-rw-r--r--camel/camel.h2
5 files changed, 420 insertions, 0 deletions
diff --git a/camel/ChangeLog b/camel/ChangeLog
index a10762770a..a3d8ed28fc 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,5 +1,9 @@
2002-06-26 Jeffrey Stedfast <fejj@ximian.com>
+ * camel-multipart-encrypted.[c,h]: New class implementing the
+ multipart/encrypted content type. Contains methods for encrypting
+ and decrypting a multipart/encrypted MIME object.
+
* camel-gpg-context.c (gpg_ctx_parse_status): Check for NODATA
too.
diff --git a/camel/Makefile.am b/camel/Makefile.am
index 2c5d77486d..f1b4cbca2e 100644
--- a/camel/Makefile.am
+++ b/camel/Makefile.am
@@ -68,6 +68,7 @@ libcamel_la_SOURCES = \
camel-mime-utils.c \
camel-movemail.c \
camel-multipart.c \
+ camel-multipart-encrypted.c \
camel-multipart-signed.c \
camel-object.c \
camel-operation.c \
@@ -168,6 +169,7 @@ libcamelinclude_HEADERS = \
camel-mime-utils.h \
camel-movemail.h \
camel-multipart.h \
+ camel-multipart-encrypted.h \
camel-multipart-signed.h \
camel-object.h \
camel-operation.h \
diff --git a/camel/camel-multipart-encrypted.c b/camel/camel-multipart-encrypted.c
new file mode 100644
index 0000000000..0d77d20e19
--- /dev/null
+++ b/camel/camel-multipart-encrypted.c
@@ -0,0 +1,329 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ * Copyright 2002 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 <string.h>
+
+#include "camel-multipart-encrypted.h"
+#include "camel-mime-filter-crlf.h"
+#include "camel-stream-filter.h"
+#include "camel-stream-mem.h"
+#include "camel-mime-utils.h"
+#include "camel-mime-part.h"
+
+static void camel_multipart_encrypted_class_init (CamelMultipartEncryptedClass *klass);
+static void camel_multipart_encrypted_init (gpointer object, gpointer klass);
+static void camel_multipart_encrypted_finalize (CamelObject *object);
+
+static void set_mime_type_field (CamelDataWrapper *data_wrapper, CamelContentType *mime_type);
+
+
+static CamelMultipartClass *parent_class = NULL;
+
+
+CamelType
+camel_multipart_encrypted_get_type (void)
+{
+ static CamelType type = CAMEL_INVALID_TYPE;
+
+ if (type == CAMEL_INVALID_TYPE) {
+ type = camel_type_register (camel_multipart_get_type (),
+ "CamelMultipartEncrypted",
+ sizeof (CamelMultipartEncrypted),
+ sizeof (CamelMultipartEncryptedClass),
+ (CamelObjectClassInitFunc) camel_multipart_encrypted_class_init,
+ NULL,
+ (CamelObjectInitFunc) camel_multipart_encrypted_init,
+ (CamelObjectFinalizeFunc) camel_multipart_encrypted_finalize);
+ }
+
+ return type;
+}
+
+
+static void
+camel_multipart_encrypted_class_init (CamelMultipartEncryptedClass *klass)
+{
+ CamelDataWrapperClass *camel_data_wrapper_class = CAMEL_DATA_WRAPPER_CLASS (klass);
+
+ parent_class = (CamelMultipartClass *) camel_multipart_get_type ();
+
+ /* virtual method overload */
+ camel_data_wrapper_class->set_mime_type_field = set_mime_type_field;
+}
+
+static void
+camel_multipart_encrypted_init (gpointer object, gpointer klass)
+{
+ CamelMultipartEncrypted *multipart = (CamelMultipartEncrypted *) object;
+
+ camel_data_wrapper_set_mime_type (CAMEL_DATA_WRAPPER (multipart), "multipart/encrypted");
+
+ multipart->decrypted = NULL;
+}
+
+static void
+camel_multipart_encrypted_finalize (CamelObject *object)
+{
+ CamelMultipartEncrypted *mpe = (CamelMultipartEncrypted *) object;
+
+ g_free (mpe->protocol);
+
+ if (mpe->decrypted)
+ camel_object_unref (mpe->decrypted);
+}
+
+/* we snoop the mime type to get the protocol */
+static void
+set_mime_type_field (CamelDataWrapper *data_wrapper, CamelContentType *mime_type)
+{
+ CamelMultipartEncrypted *mpe = (CamelMultipartEncrypted *) data_wrapper;
+
+ if (mime_type) {
+ const char *protocol;
+
+ protocol = header_content_type_param (mime_type, "protocol");
+ g_free (mpe->protocol);
+ mpe->protocol = g_strdup (protocol);
+ }
+
+ ((CamelDataWrapperClass *) parent_class)->set_mime_type_field (data_wrapper, mime_type);
+}
+
+
+/**
+ * camel_multipart_encrypted_new:
+ *
+ * Create a new CamelMultipartEncrypted object.
+ *
+ * A MultipartEncrypted should be used to store and create parts of
+ * type "multipart/encrypted".
+ *
+ * Returns a new CamelMultipartEncrypted
+ **/
+CamelMultipartEncrypted *
+camel_multipart_encrypted_new (void)
+{
+ CamelMultipartEncrypted *multipart;
+
+ multipart = (CamelMultipartEncrypted *) camel_object_new (CAMEL_MULTIPART_ENCRYPTED_TYPE);
+
+ return multipart;
+}
+
+
+int
+camel_multipart_encrypted_encrypt (CamelMultipartEncrypted *mpe, CamelMimePart *content,
+ CamelCipherContext *cipher, GPtrArray *recipients,
+ CamelException *ex)
+{
+ CamelMimePart *version_part, *encrypted_part;
+ CamelContentType *mime_type;
+ CamelDataWrapper *wrapper;
+ CamelStream *filtered_stream;
+ CamelStream *stream, *ciphertext;
+ CamelMimeFilter *crlf_filter;
+
+ g_return_val_if_fail (CAMEL_IS_MULTIPART_ENCRYPTED (mpe), -1);
+ g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (cipher), -1);
+ g_return_val_if_fail (cipher->encrypt_protocol != NULL, -1);
+ g_return_val_if_fail (CAMEL_IS_MIME_PART (content), -1);
+
+ /* get the cleartext */
+ stream = camel_stream_mem_new ();
+ filtered_stream = (CamelStream *) camel_stream_filter_new_with_stream (stream);
+
+ crlf_filter = camel_mime_filter_crlf_new (CAMEL_MIME_FILTER_CRLF_ENCODE,
+ CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY);
+ camel_stream_filter_add (CAMEL_STREAM_FILTER (filtered_stream), crlf_filter);
+ camel_object_unref (crlf_filter);
+
+ camel_data_wrapper_write_to_stream ((CamelDataWrapper *) content, filtered_stream);
+ camel_stream_flush (filtered_stream);
+ camel_object_unref (filtered_stream);
+
+ /* reset the content stream */
+ camel_stream_reset (stream);
+
+ /* encrypt the content stream */
+ ciphertext = camel_stream_mem_new ();
+ if (camel_cipher_encrypt (cipher, FALSE, NULL, recipients, stream, ciphertext, ex) == -1) {
+ camel_object_unref (ciphertext);
+ camel_object_unref (stream);
+ return -1;
+ }
+
+ camel_object_unref (stream);
+ camel_stream_reset (ciphertext);
+
+ /* construct the version part */
+ stream = camel_stream_mem_new ();
+ camel_stream_write_string (stream, "Version: 1");
+ camel_stream_reset (stream);
+
+ version_part = camel_mime_part_new ();
+ wrapper = camel_data_wrapper_new ();
+ camel_data_wrapper_set_mime_type (wrapper, cipher->encrypt_protocol);
+ camel_data_wrapper_construct_from_stream (wrapper, stream);
+ camel_object_unref (stream);
+ camel_medium_set_content_object ((CamelMedium *) version_part, wrapper);
+ camel_object_unref (wrapper);
+
+ /* construct the encrypted mime part */
+ encrypted_part = camel_mime_part_new ();
+ wrapper = camel_data_wrapper_new ();
+ camel_data_wrapper_set_mime_type (wrapper, "application/octet-stream; name=encrypted.asc");
+ camel_data_wrapper_construct_from_stream (wrapper, ciphertext);
+ camel_object_unref (ciphertext);
+ camel_medium_set_content_object ((CamelMedium *) encrypted_part, wrapper);
+ camel_object_unref (wrapper);
+
+ /* save the version and encrypted parts */
+ /* FIXME: make sure there aren't any other parts?? */
+ camel_multipart_add_part (CAMEL_MULTIPART (mpe), version_part);
+ camel_object_unref (version_part);
+ camel_multipart_add_part (CAMEL_MULTIPART (mpe), encrypted_part);
+ camel_object_unref (encrypted_part);
+
+ /* cache the decrypted content */
+ camel_object_ref (content);
+ mpe->decrypted = content;
+
+ /* set the content-type params for this multipart/encrypted part */
+ mime_type = header_content_type_new ("multipart", "encrypted");
+ header_content_type_set_param (mime_type, "protocol", cipher->encrypt_protocol);
+ camel_data_wrapper_set_mime_type_field (CAMEL_DATA_WRAPPER (mpe), mime_type);
+ header_content_type_unref (mime_type);
+ camel_multipart_set_boundary ((CamelMultipart *) mpe, NULL);
+
+ return 0;
+}
+
+
+CamelMimePart *
+camel_multipart_encrypted_decrypt (CamelMultipartEncrypted *mpe,
+ CamelCipherContext *cipher,
+ CamelException *ex)
+{
+ CamelMimePart *version_part, *encrypted_part, *decrypted_part;
+ CamelContentType *mime_type;
+ CamelDataWrapper *wrapper;
+ CamelStream *filtered_stream;
+ CamelMimeFilter *crlf_filter;
+ CamelStream *ciphertext;
+ CamelStream *stream;
+ const char *protocol;
+ char *content_type;
+
+ g_return_val_if_fail (CAMEL_IS_MULTIPART_ENCRYPTED (mpe), NULL);
+ g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (cipher), NULL);
+ g_return_val_if_fail (cipher->encrypt_protocol != NULL, NULL);
+
+ if (mpe->decrypted) {
+ /* we seem to have already decrypted the part */
+ camel_object_ref (mpe->decrypted);
+ return mpe->decrypted;
+ }
+
+ protocol = mpe->protocol;
+
+ if (protocol) {
+ /* make sure the protocol matches the cipher encrypt protocol */
+ if (strcasecmp (cipher->encrypt_protocol, protocol) != 0) {
+ camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Failed to decrypt MIME part: protocol error"));
+
+ return NULL;
+ }
+ } else {
+ /* *shrug* - I guess just go on as if they match? */
+ protocol = cipher->encrypt_protocol;
+ }
+
+ version_part = camel_multipart_get_part (CAMEL_MULTIPART (mpe), CAMEL_MULTIPART_ENCRYPTED_VERSION);
+
+ /* make sure the protocol matches the version part's content-type */
+ content_type = camel_data_wrapper_get_mime_type ((CamelDataWrapper *) version_part);
+ if (strcasecmp (content_type, protocol) != 0) {
+ camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Failed to decrypt MIME part: protocol error"));
+
+ camel_object_unref (version_part);
+ g_free (content_type);
+
+ return NULL;
+ }
+ g_free (content_type);
+
+ /* get the encrypted part (second part) */
+ encrypted_part = camel_multipart_get_part (CAMEL_MULTIPART (mpe), CAMEL_MULTIPART_ENCRYPTED_CONTENT);
+ mime_type = camel_mime_part_get_content_type (encrypted_part);
+ if (!header_content_type_is (mime_type, "application", "octet-stream")) {
+ camel_object_unref (encrypted_part);
+ camel_object_unref (version_part);
+ return NULL;
+ }
+
+ /* get the ciphertext stream */
+ ciphertext = camel_stream_mem_new ();
+ wrapper = camel_medium_get_content_object ((CamelMedium *) encrypted_part);
+ camel_data_wrapper_write_to_stream (wrapper, ciphertext);
+ camel_stream_reset (ciphertext);
+
+ stream = camel_stream_mem_new ();
+ filtered_stream = (CamelStream *) camel_stream_filter_new_with_stream (stream);
+ crlf_filter = camel_mime_filter_crlf_new (CAMEL_MIME_FILTER_CRLF_DECODE,
+ CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY);
+ camel_stream_filter_add (CAMEL_STREAM_FILTER (filtered_stream), crlf_filter);
+ camel_object_unref (crlf_filter);
+
+ /* get the cleartext */
+ if (camel_cipher_decrypt (cipher, ciphertext, filtered_stream, ex) == -1) {
+ camel_object_unref (filtered_stream);
+ camel_object_unref (ciphertext);
+ camel_object_unref (stream);
+
+ return NULL;
+ }
+
+ camel_stream_flush (filtered_stream);
+ camel_object_unref (filtered_stream);
+ camel_object_unref (ciphertext);
+
+ decrypted_part = camel_mime_part_new ();
+ camel_data_wrapper_construct_from_stream (CAMEL_DATA_WRAPPER (decrypted_part), stream);
+
+ if (decrypted_part) {
+ /* cache the decrypted part */
+ camel_object_ref (decrypted_part);
+ mpe->decrypted = decrypted_part;
+ } else {
+ camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
+ _("Failed to decrypt MIME part: parse error"));
+ }
+
+ return decrypted_part;
+}
diff --git a/camel/camel-multipart-encrypted.h b/camel/camel-multipart-encrypted.h
new file mode 100644
index 0000000000..9b9990a047
--- /dev/null
+++ b/camel/camel-multipart-encrypted.h
@@ -0,0 +1,83 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ * Copyright 2002 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.
+ *
+ */
+
+
+#ifndef __CAMEL_MULTIPART_ENCRYPTED_H__
+#define __CAMEL_MULTIPART_ENCRYPTED_H__
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus */
+
+#include <camel/camel-multipart.h>
+#include <camel/camel-cipher-context.h>
+
+#define CAMEL_MULTIPART_ENCRYPTED_TYPE (camel_multipart_encrypted_get_type ())
+#define CAMEL_MULTIPART_ENCRYPTED(obj) (CAMEL_CHECK_CAST((obj), CAMEL_MULTIPART_ENCRYPTED_TYPE, CamelMultipartEncrypted))
+#define CAMEL_MULTIPART_ENCRYPTED_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_MULTIPART_ENCRYPTED_TYPE, CamelMultipartEncryptedClass))
+#define CAMEL_IS_MULTIPART_ENCRYPTED(o) (CAMEL_CHECK_TYPE((o), CAMEL_MULTIPART_ENCRYPTED_TYPE))
+
+typedef struct _CamelMultipartEncrypted CamelMultipartEncrypted;
+typedef struct _CamelMultipartEncryptedClass CamelMultipartEncryptedClass;
+
+/* 'handy' enums for getting the internal parts of the multipart */
+enum {
+ CAMEL_MULTIPART_ENCRYPTED_VERSION,
+ CAMEL_MULTIPART_ENCRYPTED_CONTENT,
+};
+
+struct _CamelMultipartEncrypted {
+ CamelMultipart parent_object;
+
+ CamelMimePart *version;
+ CamelMimePart *content;
+ CamelMimePart *decrypted;
+
+ char *protocol;
+};
+
+
+struct _CamelMultipartEncryptedClass {
+ CamelMultipartClass parent_class;
+
+};
+
+
+CamelType camel_multipart_encrypted_get_type (void);
+
+
+CamelMultipartEncrypted *camel_multipart_encrypted_new (void);
+
+int camel_multipart_encrypted_encrypt (CamelMultipartEncrypted *mpe, CamelMimePart *content,
+ CamelCipherContext *cipher, GPtrArray *recipients,
+ CamelException *ex);
+
+CamelMimePart *camel_multipart_encrypted_decrypt (CamelMultipartEncrypted *mpe,
+ CamelCipherContext *cipher,
+ CamelException *ex);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __CAMEL_MULTIPART_ENCRYPTED_H__ */
diff --git a/camel/camel.h b/camel/camel.h
index 1deebd1431..0ad03e28a3 100644
--- a/camel/camel.h
+++ b/camel/camel.h
@@ -58,6 +58,8 @@ extern "C" {
#include <camel/camel-mime-utils.h>
#include <camel/camel-movemail.h>
#include <camel/camel-multipart.h>
+#include <camel/camel-multipart-encrypted.h>
+#include <camel/camel-multipart-signed.h>
#include <camel/camel-pgp-context.h>
#include <camel/camel-gpg-context.h>
#include <camel/camel-pgp-mime.h>
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