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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* 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 Lesser General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef CAMEL_CIPHER_CONTEXT_H
#define CAMEL_CIPHER_CONTEXT_H
#include <camel/camel-list-utils.h>
#include <camel/camel-session.h>
#include <camel/camel-exception.h>
#define CAMEL_CIPHER_CONTEXT_TYPE (camel_cipher_context_get_type ())
#define CAMEL_CIPHER_CONTEXT(obj) (CAMEL_CHECK_CAST((obj), CAMEL_CIPHER_CONTEXT_TYPE, CamelCipherContext))
#define CAMEL_CIPHER_CONTEXT_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_CIPHER_CONTEXT_TYPE, CamelCipherContextClass))
#define CAMEL_IS_CIPHER_CONTEXT(o) (CAMEL_CHECK_TYPE((o), CAMEL_CIPHER_CONTEXT_TYPE))
G_BEGIN_DECLS
struct _CamelStream;
struct _CamelMimePart;
typedef struct _CamelCipherValidity CamelCipherValidity;
typedef struct _CamelCipherCertInfo CamelCipherCertInfo;
typedef enum {
CAMEL_CIPHER_HASH_DEFAULT,
CAMEL_CIPHER_HASH_MD2,
CAMEL_CIPHER_HASH_MD5,
CAMEL_CIPHER_HASH_SHA1,
CAMEL_CIPHER_HASH_RIPEMD160,
CAMEL_CIPHER_HASH_TIGER192,
CAMEL_CIPHER_HASH_HAVAL5160
} CamelCipherHash;
typedef enum _camel_cipher_validity_sign_t {
CAMEL_CIPHER_VALIDITY_SIGN_NONE,
CAMEL_CIPHER_VALIDITY_SIGN_GOOD,
CAMEL_CIPHER_VALIDITY_SIGN_BAD,
CAMEL_CIPHER_VALIDITY_SIGN_UNKNOWN,
CAMEL_CIPHER_VALIDITY_SIGN_NEED_PUBLIC_KEY
} camel_cipher_validity_sign_t;
typedef enum _camel_cipher_validity_encrypt_t {
CAMEL_CIPHER_VALIDITY_ENCRYPT_NONE,
CAMEL_CIPHER_VALIDITY_ENCRYPT_WEAK,
CAMEL_CIPHER_VALIDITY_ENCRYPT_ENCRYPTED, /* encrypted, unknown strenght */
CAMEL_CIPHER_VALIDITY_ENCRYPT_STRONG
} camel_cipher_validity_encrypt_t;
typedef enum _camel_cipher_validity_mode_t {
CAMEL_CIPHER_VALIDITY_SIGN,
CAMEL_CIPHER_VALIDITY_ENCRYPT
} camel_cipher_validity_mode_t;
struct _CamelCipherCertInfo {
struct _CamelCipherCertInfo *next;
struct _CamelCipherCertInfo *prev;
gchar *name; /* common name */
gchar *email;
gpointer cert_data; /* custom certificate data; can be NULL */
void (*cert_data_free) (gpointer cert_data); /* called to free cert_data; can be NULL only if cert_data is NULL */
gpointer (*cert_data_clone) (gpointer cert_data); /* called to clone cert_data; can be NULL only if cert_data is NULL */
};
struct _CamelCipherValidity {
struct _CamelCipherValidity *next;
struct _CamelCipherValidity *prev;
CamelDList children;
struct {
enum _camel_cipher_validity_sign_t status;
gchar *description;
CamelDList signers; /* CamelCipherCertInfo's */
} sign;
struct {
enum _camel_cipher_validity_encrypt_t status;
gchar *description;
CamelDList encrypters; /* CamelCipherCertInfo's */
} encrypt;
};
typedef struct _CamelCipherContext {
CamelObject parent_object;
struct _CamelCipherContextPrivate *priv;
CamelSession *session;
/* these MUST be set by implementors */
const gchar *sign_protocol;
const gchar *encrypt_protocol;
const gchar *key_protocol;
} CamelCipherContext;
typedef struct _CamelCipherContextClass {
CamelObjectClass parent_class;
CamelCipherHash (*id_to_hash)(CamelCipherContext *context, const gchar *id);
const gchar * (*hash_to_id)(CamelCipherContext *context, CamelCipherHash hash);
gint (*sign) (CamelCipherContext *context, const gchar *userid, CamelCipherHash hash,
struct _CamelMimePart *ipart, struct _CamelMimePart *opart, CamelException *ex);
CamelCipherValidity * (*verify) (CamelCipherContext *context, struct _CamelMimePart *ipart, CamelException *ex);
gint (*encrypt) (CamelCipherContext *context, const gchar *userid,
GPtrArray *recipients, struct _CamelMimePart *ipart, struct _CamelMimePart *opart,
CamelException *ex);
CamelCipherValidity *(*decrypt) (CamelCipherContext *context, struct _CamelMimePart *ipart, struct _CamelMimePart *opart,
CamelException *ex);
gint (*import_keys) (CamelCipherContext *context, struct _CamelStream *istream,
CamelException *ex);
gint (*export_keys) (CamelCipherContext *context, GPtrArray *keys,
struct _CamelStream *ostream, CamelException *ex);
} CamelCipherContextClass;
CamelType camel_cipher_context_get_type (void);
CamelCipherContext *camel_cipher_context_new (CamelSession *session);
void camel_cipher_context_construct (CamelCipherContext *context, CamelSession *session);
/* cipher context util routines */
CamelCipherHash camel_cipher_id_to_hash (CamelCipherContext *context, const gchar *id);
const gchar * camel_cipher_hash_to_id (CamelCipherContext *context, CamelCipherHash hash);
/* FIXME:
There are some inconsistencies here, the api's should probably handle CamelMimePart's as input/outputs,
Something that might generate a multipart/signed should do it as part of that processing, internally
to the cipher, etc etc. */
/* cipher routines */
gint camel_cipher_sign (CamelCipherContext *context, const gchar *userid, CamelCipherHash hash,
struct _CamelMimePart *ipart, struct _CamelMimePart *opart, CamelException *ex);
CamelCipherValidity *camel_cipher_verify (CamelCipherContext *context, struct _CamelMimePart *ipart, CamelException *ex);
gint camel_cipher_encrypt (CamelCipherContext *context, const gchar *userid,
GPtrArray *recipients, struct _CamelMimePart *ipart, struct _CamelMimePart *opart,
CamelException *ex);
CamelCipherValidity *camel_cipher_decrypt (CamelCipherContext *context, struct _CamelMimePart *ipart, struct _CamelMimePart *opart,
CamelException *ex);
/* key/certificate routines */
gint camel_cipher_import_keys (CamelCipherContext *context, struct _CamelStream *istream,
CamelException *ex);
gint camel_cipher_export_keys (CamelCipherContext *context, GPtrArray *keys,
struct _CamelStream *ostream, CamelException *ex);
/* CamelCipherValidity utility functions */
CamelCipherValidity *camel_cipher_validity_new (void);
void camel_cipher_validity_init (CamelCipherValidity *validity);
gboolean camel_cipher_validity_get_valid (CamelCipherValidity *validity);
void camel_cipher_validity_set_valid (CamelCipherValidity *validity, gboolean valid);
gchar *camel_cipher_validity_get_description (CamelCipherValidity *validity);
void camel_cipher_validity_set_description (CamelCipherValidity *validity, const gchar *description);
void camel_cipher_validity_clear (CamelCipherValidity *validity);
CamelCipherValidity *camel_cipher_validity_clone(CamelCipherValidity *vin);
void camel_cipher_validity_add_certinfo(CamelCipherValidity *vin, camel_cipher_validity_mode_t mode, const gchar *name, const gchar *email);
void camel_cipher_validity_add_certinfo_ex (
CamelCipherValidity *vin,
camel_cipher_validity_mode_t mode,
const gchar *name,
const gchar *email,
gpointer cert_data,
void (*cert_data_free) (gpointer cert_data),
gpointer (*cert_data_clone) (gpointer cert_data));
void camel_cipher_validity_envelope(CamelCipherValidity *parent, CamelCipherValidity *valid);
void camel_cipher_validity_free (CamelCipherValidity *validity);
/* utility functions */
gint camel_cipher_canonical_to_stream(CamelMimePart *part, guint32 flags, CamelStream *ostream);
G_END_DECLS
#endif /* CAMEL_CIPHER_CONTEXT_H */
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