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/*
* Copyright 2023 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef CLASSIFIERS_H
#define CLASSIFIERS_H
#include "config.h"
#include "mem_pool.h"
#include "contrib/libev/ev.h"
#define RSPAMD_DEFAULT_CLASSIFIER "bayes"
/* Consider this value as 0 */
#define ALPHA 0.0001
#ifdef __cplusplus
extern "C" {
#endif
struct rspamd_classifier_config;
struct rspamd_task;
struct rspamd_config;
struct rspamd_classifier;
struct token_node_s;
struct rspamd_stat_classifier {
char *name;
gboolean (*init_func)(struct rspamd_config *cfg,
struct ev_loop *ev_base,
struct rspamd_classifier *cl);
gboolean (*classify_func)(struct rspamd_classifier *ctx,
GPtrArray *tokens,
struct rspamd_task *task);
gboolean (*learn_spam_func)(struct rspamd_classifier *ctx,
GPtrArray *input,
struct rspamd_task *task,
gboolean is_spam,
gboolean unlearn,
GError **err);
void (*fin_func)(struct rspamd_classifier *cl);
};
/* Bayes algorithm */
gboolean bayes_init(struct rspamd_config *cfg,
struct ev_loop *ev_base,
struct rspamd_classifier *);
gboolean bayes_classify(struct rspamd_classifier *ctx,
GPtrArray *tokens,
struct rspamd_task *task);
gboolean bayes_learn_spam(struct rspamd_classifier *ctx,
GPtrArray *tokens,
struct rspamd_task *task,
gboolean is_spam,
gboolean unlearn,
GError **err);
void bayes_fin(struct rspamd_classifier *);
/* Generic lua classifier */
gboolean lua_classifier_init(struct rspamd_config *cfg,
struct ev_loop *ev_base,
struct rspamd_classifier *);
gboolean lua_classifier_classify(struct rspamd_classifier *ctx,
GPtrArray *tokens,
struct rspamd_task *task);
gboolean lua_classifier_learn_spam(struct rspamd_classifier *ctx,
GPtrArray *tokens,
struct rspamd_task *task,
gboolean is_spam,
gboolean unlearn,
GError **err);
extern gint rspamd_bayes_log_id;
#define msg_debug_bayes(...) rspamd_conditional_debug_fast(NULL, task->from_addr, \
rspamd_bayes_log_id, "bayes", task->task_pool->tag.uid, \
G_STRFUNC, \
__VA_ARGS__)
#define msg_debug_bayes_cfg(...) rspamd_conditional_debug_fast(NULL, NULL, \
rspamd_bayes_log_id, "bayes", cfg->cfg_pool->tag.uid, \
G_STRFUNC, \
__VA_ARGS__)
#ifdef __cplusplus
}
#endif
#endif
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