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-rw-r--r--camel/camel-cipher-context.c513
1 files changed, 0 insertions, 513 deletions
diff --git a/camel/camel-cipher-context.c b/camel/camel-cipher-context.c
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--- a/camel/camel-cipher-context.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 version 2 of the GNU 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 General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include "camel-cipher-context.h"
-
-#include <glib.h>
-
-#ifdef ENABLE_THREADS
-#include <pthread.h>
-#define CIPHER_LOCK(ctx) g_mutex_lock (((CamelCipherContext *) ctx)->priv->lock)
-#define CIPHER_UNLOCK(ctx) g_mutex_unlock (((CamelCipherContext *) ctx)->priv->lock);
-#else
-#define CIPHER_LOCK(ctx)
-#define CIPHER_UNLOCK(ctx)
-#endif
-
-#define d(x)
-
-#define CCC_CLASS(o) CAMEL_CIPHER_CONTEXT_CLASS(CAMEL_OBJECT_GET_CLASS(o))
-
-struct _CamelCipherContextPrivate {
-#ifdef ENABLE_THREADS
- GMutex *lock;
-#endif
-};
-
-static const char *cipher_hash_to_id (CamelCipherContext *context, CamelCipherHash hash);
-static CamelCipherHash cipher_id_to_hash (CamelCipherContext *context, const char *id);
-
-static int cipher_sign (CamelCipherContext *context, const char *userid, CamelCipherHash hash,
- CamelStream *istream, CamelStream *ostream, CamelException *ex);
-static CamelCipherValidity *cipher_verify (CamelCipherContext *context, CamelCipherHash hash,
- CamelStream *istream, CamelStream *sigstream,
- CamelException *ex);
-static int cipher_encrypt (CamelCipherContext *context, gboolean sign, const char *userid,
- GPtrArray *recipients, CamelStream *istream,
- CamelStream *ostream, CamelException *ex);
-static int cipher_decrypt (CamelCipherContext *context, CamelStream *istream,
- CamelStream *ostream, CamelException *ex);
-static int cipher_import_keys (CamelCipherContext *context, CamelStream *istream,
- CamelException *ex);
-static int cipher_export_keys (CamelCipherContext *context, GPtrArray *keys,
- CamelStream *ostream, CamelException *ex);
-
-
-static CamelObjectClass *parent_class;
-
-
-static void
-camel_cipher_context_init (CamelCipherContext *context)
-{
- context->priv = g_new0 (struct _CamelCipherContextPrivate, 1);
-#ifdef ENABLE_THREADS
- context->priv->lock = g_mutex_new ();
-#endif
-}
-
-static void
-camel_cipher_context_finalise (CamelObject *o)
-{
- CamelCipherContext *context = (CamelCipherContext *)o;
-
- camel_object_unref (CAMEL_OBJECT (context->session));
-
-#ifdef ENABLE_THREADS
- g_mutex_free (context->priv->lock);
-#endif
-
- g_free (context->priv);
-}
-
-static void
-camel_cipher_context_class_init (CamelCipherContextClass *camel_cipher_context_class)
-{
- parent_class = camel_type_get_global_classfuncs (camel_object_get_type ());
-
- camel_cipher_context_class->hash_to_id = cipher_hash_to_id;
- camel_cipher_context_class->id_to_hash = cipher_id_to_hash;
- camel_cipher_context_class->sign = cipher_sign;
- camel_cipher_context_class->verify = cipher_verify;
- camel_cipher_context_class->encrypt = cipher_encrypt;
- camel_cipher_context_class->decrypt = cipher_decrypt;
- camel_cipher_context_class->import_keys = cipher_import_keys;
- camel_cipher_context_class->export_keys = cipher_export_keys;
-}
-
-CamelType
-camel_cipher_context_get_type (void)
-{
- static CamelType type = CAMEL_INVALID_TYPE;
-
- if (type == CAMEL_INVALID_TYPE) {
- type = camel_type_register (camel_object_get_type (),
- "CamelCipherContext",
- sizeof (CamelCipherContext),
- sizeof (CamelCipherContextClass),
- (CamelObjectClassInitFunc) camel_cipher_context_class_init,
- NULL,
- (CamelObjectInitFunc) camel_cipher_context_init,
- (CamelObjectFinalizeFunc) camel_cipher_context_finalise);
- }
-
- return type;
-}
-
-
-/**
- * camel_cipher_context_new:
- * @session: CamelSession
- *
- * This creates a new CamelCipherContext object which is used to sign,
- * verify, encrypt and decrypt streams.
- *
- * Return value: the new CamelCipherContext
- **/
-CamelCipherContext *
-camel_cipher_context_new (CamelSession *session)
-{
- CamelCipherContext *context;
-
- g_return_val_if_fail (session != NULL, NULL);
-
- context = CAMEL_CIPHER_CONTEXT (camel_object_new (CAMEL_CIPHER_CONTEXT_TYPE));
-
- camel_object_ref (CAMEL_OBJECT (session));
- context->session = session;
-
- return context;
-}
-
-
-/**
- * camel_cipher_context_construct:
- * @context: CamelCipherContext
- * @session: CamelSession
- *
- * Constucts the CamelCipherContext
- **/
-void
-camel_cipher_context_construct (CamelCipherContext *context, CamelSession *session)
-{
- g_return_if_fail (CAMEL_IS_CIPHER_CONTEXT (context));
- g_return_if_fail (CAMEL_IS_SESSION (session));
-
- camel_object_ref (CAMEL_OBJECT (session));
- context->session = session;
-}
-
-
-static int
-cipher_sign (CamelCipherContext *ctx, const char *userid, CamelCipherHash hash,
- CamelStream *istream, CamelStream *ostream, CamelException *ex)
-{
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Signing is not supported by this cipher"));
- return -1;
-}
-
-/**
- * camel_cipher_sign:
- * @context: Cipher Context
- * @userid: private key to use to sign the stream
- * @hash: preferred Message-Integrity-Check hash algorithm
- * @istream: input stream
- * @ostream: output stream
- * @ex: exception
- *
- * Signs the input stream and writes the resulting signature to the output stream.
- *
- * Return value: 0 for success or -1 for failure.
- **/
-int
-camel_cipher_sign (CamelCipherContext *context, const char *userid, CamelCipherHash hash,
- CamelStream *istream, CamelStream *ostream, CamelException *ex)
-{
- int retval;
-
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), -1);
-
- CIPHER_LOCK(context);
-
- retval = CCC_CLASS (context)->sign (context, userid, hash, istream, ostream, ex);
-
- CIPHER_UNLOCK(context);
-
- return retval;
-}
-
-
-static CamelCipherValidity *
-cipher_verify (CamelCipherContext *context, CamelCipherHash hash, CamelStream *istream,
- CamelStream *sigstream, CamelException *ex)
-{
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Verifying is not supported by this cipher"));
- return NULL;
-}
-
-
-/**
- * camel_cipher_verify:
- * @context: Cipher Context
- * @istream: input stream
- * @sigstream: optional detached-signature stream
- * @ex: exception
- *
- * Verifies the signature. If @istream is a clearsigned stream,
- * you should pass %NULL as the sigstream parameter. Otherwise
- * @sigstream is assumed to be the signature stream and is used to
- * verify the integirity of the @istream.
- *
- * Return value: a CamelCipherValidity structure containing information
- * about the integrity of the input stream or %NULL on failure to
- * execute at all.
- **/
-CamelCipherValidity *
-camel_cipher_verify (CamelCipherContext *context, CamelCipherHash hash, CamelStream *istream,
- CamelStream *sigstream, CamelException *ex)
-{
- CamelCipherValidity *valid;
-
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), NULL);
-
- CIPHER_LOCK(context);
-
- valid = CCC_CLASS (context)->verify (context, hash, istream, sigstream, ex);
-
- CIPHER_UNLOCK(context);
-
- return valid;
-}
-
-
-static int
-cipher_encrypt (CamelCipherContext *context, gboolean sign, const char *userid, GPtrArray *recipients,
- CamelStream *istream, CamelStream *ostream, CamelException *ex)
-{
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Encryption is not supported by this cipher"));
- return -1;
-}
-
-/**
- * camel_cipher_encrypt:
- * @context: Cipher Context
- * @sign: sign as well as encrypt
- * @userid: key id (or email address) to use when signing (assuming @sign is %TRUE)
- * @recipients: an array of recipient key ids and/or email addresses
- * @istream: cleartext input stream
- * @ostream: ciphertext output stream
- * @ex: exception
- *
- * Encrypts (and optionally signs) the cleartext input stream and
- * writes the resulting ciphertext to the output stream.
- *
- * Return value: 0 for success or -1 for failure.
- **/
-int
-camel_cipher_encrypt (CamelCipherContext *context, gboolean sign, const char *userid, GPtrArray *recipients,
- CamelStream *istream, CamelStream *ostream, CamelException *ex)
-{
- int retval;
-
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), -1);
-
- CIPHER_LOCK(context);
-
- retval = CCC_CLASS (context)->encrypt (context, sign, userid, recipients, istream, ostream, ex);
-
- CIPHER_UNLOCK(context);
-
- return retval;
-}
-
-
-static int
-cipher_decrypt (CamelCipherContext *context, CamelStream *istream,
- CamelStream *ostream, CamelException *ex)
-{
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Decryption is not supported by this cipher"));
- return -1;
-}
-
-/**
- * camel_cipher_decrypt:
- * @context: Cipher Context
- * @ciphertext: ciphertext stream (ie input stream)
- * @cleartext: cleartext stream (ie output stream)
- * @ex: exception
- *
- * Decrypts the ciphertext input stream and writes the resulting
- * cleartext to the output stream.
- *
- * Return value: 0 for success or -1 for failure.
- **/
-int
-camel_cipher_decrypt (CamelCipherContext *context, CamelStream *istream,
- CamelStream *ostream, CamelException *ex)
-{
- int retval;
-
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), -1);
-
- CIPHER_LOCK(context);
-
- retval = CCC_CLASS (context)->decrypt (context, istream, ostream, ex);
-
- CIPHER_UNLOCK(context);
-
- return retval;
-}
-
-
-static int
-cipher_import_keys (CamelCipherContext *context, CamelStream *istream, CamelException *ex)
-{
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("You may not import keys with this cipher"));
-
- return -1;
-}
-
-
-/**
- * camel_cipher_import_keys:
- * @ctx: Cipher Context
- * @istream: input stream (containing keys)
- * @ex: exception
- *
- * Imports a stream of keys/certificates contained within @istream
- * into the key/certificate database controlled by @ctx.
- *
- * Returns 0 on success or -1 on fail.
- **/
-int
-camel_cipher_import_keys (CamelCipherContext *context, CamelStream *istream, CamelException *ex)
-{
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), -1);
- g_return_val_if_fail (CAMEL_IS_STREAM (istream), -1);
-
- return CCC_CLASS (context)->import_keys (context, istream, ex);
-}
-
-
-static int
-cipher_export_keys (CamelCipherContext *context, GPtrArray *keys,
- CamelStream *ostream, CamelException *ex)
-{
- camel_exception_set (ex, CAMEL_EXCEPTION_SYSTEM,
- _("You may not export keys with this cipher"));
-
- return -1;
-}
-
-
-/**
- * camel_cipher_export_keys:
- * @ctx: Cipher Context
- * @keys: an array of key ids
- * @ostream: output stream
- * @ex: exception
- *
- * Exports the keys/certificates in @keys to the stream @ostream from
- * the key/certificate database controlled by @ctx.
- *
- * Returns 0 on success or -1 on fail.
- **/
-int
-camel_cipher_export_keys (CamelCipherContext *context, GPtrArray *keys,
- CamelStream *ostream, CamelException *ex)
-{
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), -1);
- g_return_val_if_fail (CAMEL_IS_STREAM (ostream), -1);
- g_return_val_if_fail (keys != NULL, -1);
-
- return CCC_CLASS (context)->export_keys (context, keys, ostream, ex);
-}
-
-
-static CamelCipherHash
-cipher_id_to_hash(CamelCipherContext *context, const char *id)
-{
- return CAMEL_CIPHER_HASH_DEFAULT;
-}
-
-/* a couple of util functions */
-CamelCipherHash
-camel_cipher_id_to_hash(CamelCipherContext *context, const char *id)
-{
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), CAMEL_CIPHER_HASH_DEFAULT);
-
- return CCC_CLASS (context)->id_to_hash (context, id);
-}
-
-static const char *
-cipher_hash_to_id(CamelCipherContext *context, CamelCipherHash hash)
-{
- return NULL;
-}
-
-const char *
-camel_cipher_hash_to_id(CamelCipherContext *context, CamelCipherHash hash)
-{
- g_return_val_if_fail (CAMEL_IS_CIPHER_CONTEXT (context), NULL);
-
- return CCC_CLASS (context)->hash_to_id (context, hash);
-}
-
-/* Cipher Validity stuff */
-struct _CamelCipherValidity {
- gboolean valid;
- gchar *description;
-};
-
-CamelCipherValidity *
-camel_cipher_validity_new (void)
-{
- CamelCipherValidity *validity;
-
- validity = g_new (CamelCipherValidity, 1);
- validity->valid = FALSE;
- validity->description = NULL;
-
- return validity;
-}
-
-void
-camel_cipher_validity_init (CamelCipherValidity *validity)
-{
- g_assert (validity != NULL);
-
- validity->valid = FALSE;
- validity->description = NULL;
-}
-
-gboolean
-camel_cipher_validity_get_valid (CamelCipherValidity *validity)
-{
- if (validity == NULL)
- return FALSE;
-
- return validity->valid;
-}
-
-void
-camel_cipher_validity_set_valid (CamelCipherValidity *validity, gboolean valid)
-{
- g_assert (validity != NULL);
-
- validity->valid = valid;
-}
-
-gchar *
-camel_cipher_validity_get_description (CamelCipherValidity *validity)
-{
- if (validity == NULL)
- return NULL;
-
- return validity->description;
-}
-
-void
-camel_cipher_validity_set_description (CamelCipherValidity *validity, const gchar *description)
-{
- g_assert (validity != NULL);
-
- g_free (validity->description);
- validity->description = g_strdup (description);
-}
-
-void
-camel_cipher_validity_clear (CamelCipherValidity *validity)
-{
- g_assert (validity != NULL);
-
- validity->valid = FALSE;
- g_free (validity->description);
- validity->description = NULL;
-}
-
-void
-camel_cipher_validity_free (CamelCipherValidity *validity)
-{
- if (validity == NULL)
- return;
-
- g_free (validity->description);
- g_free (validity);
-}