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Diffstat (limited to '')
| -rw-r--r-- | src/libserver/task.h | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/src/libserver/task.h b/src/libserver/task.h new file mode 100644 index 0000000..5404a11 --- /dev/null +++ b/src/libserver/task.h @@ -0,0 +1,392 @@ +/*- + * Copyright 2016 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 TASK_H_ +#define TASK_H_ + +#include "config.h" +#include "libserver/http/http_connection.h" +#include "async_session.h" +#include "util.h" +#include "mem_pool.h" +#include "dns.h" +#include "re_cache.h" +#include "khash.h" + +#ifdef __cplusplus +extern "C" { +#endif + +enum rspamd_command { + CMD_SKIP = 0, + CMD_PING, + CMD_CHECK_SPAMC, /* Legacy spamassassin format */ + CMD_CHECK_RSPAMC, /* Legacy rspamc format (like SA one) */ + CMD_CHECK, /* Legacy check - metric json reply */ + CMD_CHECK_V2, /* Modern check - symbols in json reply */ +}; + +enum rspamd_task_stage { + RSPAMD_TASK_STAGE_CONNECT = (1u << 0u), + RSPAMD_TASK_STAGE_CONNFILTERS = (1u << 1u), + RSPAMD_TASK_STAGE_READ_MESSAGE = (1u << 2u), + RSPAMD_TASK_STAGE_PROCESS_MESSAGE = (1u << 3u), + RSPAMD_TASK_STAGE_PRE_FILTERS = (1u << 4u), + RSPAMD_TASK_STAGE_FILTERS = (1u << 5u), + RSPAMD_TASK_STAGE_CLASSIFIERS_PRE = (1u << 6u), + RSPAMD_TASK_STAGE_CLASSIFIERS = (1u << 7u), + RSPAMD_TASK_STAGE_CLASSIFIERS_POST = (1u << 8u), + RSPAMD_TASK_STAGE_COMPOSITES = (1u << 9u), + RSPAMD_TASK_STAGE_POST_FILTERS = (1u << 10u), + RSPAMD_TASK_STAGE_LEARN_PRE = (1u << 11u), + RSPAMD_TASK_STAGE_LEARN = (1u << 12u), + RSPAMD_TASK_STAGE_LEARN_POST = (1u << 13u), + RSPAMD_TASK_STAGE_COMPOSITES_POST = (1u << 14u), + RSPAMD_TASK_STAGE_IDEMPOTENT = (1u << 15u), + RSPAMD_TASK_STAGE_DONE = (1u << 16u), + RSPAMD_TASK_STAGE_REPLIED = (1u << 17u) +}; + +#define RSPAMD_TASK_PROCESS_ALL (RSPAMD_TASK_STAGE_CONNECT | \ + RSPAMD_TASK_STAGE_CONNFILTERS | \ + RSPAMD_TASK_STAGE_READ_MESSAGE | \ + RSPAMD_TASK_STAGE_PRE_FILTERS | \ + RSPAMD_TASK_STAGE_PROCESS_MESSAGE | \ + RSPAMD_TASK_STAGE_FILTERS | \ + RSPAMD_TASK_STAGE_CLASSIFIERS_PRE | \ + RSPAMD_TASK_STAGE_CLASSIFIERS | \ + RSPAMD_TASK_STAGE_CLASSIFIERS_POST | \ + RSPAMD_TASK_STAGE_COMPOSITES | \ + RSPAMD_TASK_STAGE_POST_FILTERS | \ + RSPAMD_TASK_STAGE_LEARN_PRE | \ + RSPAMD_TASK_STAGE_LEARN | \ + RSPAMD_TASK_STAGE_LEARN_POST | \ + RSPAMD_TASK_STAGE_COMPOSITES_POST | \ + RSPAMD_TASK_STAGE_IDEMPOTENT | \ + RSPAMD_TASK_STAGE_DONE) +#define RSPAMD_TASK_PROCESS_LEARN (RSPAMD_TASK_STAGE_CONNECT | \ + RSPAMD_TASK_STAGE_READ_MESSAGE | \ + RSPAMD_TASK_STAGE_PROCESS_MESSAGE | \ + RSPAMD_TASK_STAGE_CLASSIFIERS_PRE | \ + RSPAMD_TASK_STAGE_CLASSIFIERS | \ + RSPAMD_TASK_STAGE_CLASSIFIERS_POST | \ + RSPAMD_TASK_STAGE_LEARN_PRE | \ + RSPAMD_TASK_STAGE_LEARN | \ + RSPAMD_TASK_STAGE_LEARN_POST | \ + RSPAMD_TASK_STAGE_DONE) + +#define RSPAMD_TASK_FLAG_MIME (1u << 0u) +#define RSPAMD_TASK_FLAG_SKIP_PROCESS (1u << 1u) +#define RSPAMD_TASK_FLAG_SKIP (1u << 2u) +#define RSPAMD_TASK_FLAG_PASS_ALL (1u << 3u) +#define RSPAMD_TASK_FLAG_NO_LOG (1u << 4u) +#define RSPAMD_TASK_FLAG_NO_IP (1u << 5u) +#define RSPAMD_TASK_FLAG_PROCESSING (1u << 6u) +#define RSPAMD_TASK_FLAG_GTUBE (1u << 7u) +#define RSPAMD_TASK_FLAG_FILE (1u << 8u) +#define RSPAMD_TASK_FLAG_NO_STAT (1u << 9u) +#define RSPAMD_TASK_FLAG_UNLEARN (1u << 10u) +#define RSPAMD_TASK_FLAG_ALREADY_LEARNED (1u << 11u) +#define RSPAMD_TASK_FLAG_LEARN_SPAM (1u << 12u) +#define RSPAMD_TASK_FLAG_LEARN_HAM (1u << 13u) +#define RSPAMD_TASK_FLAG_LEARN_AUTO (1u << 14u) +#define RSPAMD_TASK_FLAG_BROKEN_HEADERS (1u << 15u) +#define RSPAMD_TASK_FLAG_HAS_SPAM_TOKENS (1u << 16u) +#define RSPAMD_TASK_FLAG_HAS_HAM_TOKENS (1u << 17u) +#define RSPAMD_TASK_FLAG_EMPTY (1u << 18u) +#define RSPAMD_TASK_FLAG_PROFILE (1u << 19u) +#define RSPAMD_TASK_FLAG_GREYLISTED (1u << 20u) +#define RSPAMD_TASK_FLAG_OWN_POOL (1u << 21u) +#define RSPAMD_TASK_FLAG_SSL (1u << 22u) +#define RSPAMD_TASK_FLAG_BAD_UNICODE (1u << 23u) +#define RSPAMD_TASK_FLAG_MESSAGE_REWRITE (1u << 24u) +#define RSPAMD_TASK_FLAG_MAX_SHIFT (24u) + + +/* Request has a JSON control block */ +#define RSPAMD_TASK_PROTOCOL_FLAG_HAS_CONTROL (1u << 0u) +/* Request has been done by a local client */ +#define RSPAMD_TASK_PROTOCOL_FLAG_LOCAL_CLIENT (1u << 1u) +/* Request has been sent via milter */ +#define RSPAMD_TASK_PROTOCOL_FLAG_MILTER (1u << 2u) +/* Compress protocol reply */ +#define RSPAMD_TASK_PROTOCOL_FLAG_COMPRESSED (1u << 3u) +/* Include all URLs */ +#define RSPAMD_TASK_PROTOCOL_FLAG_EXT_URLS (1u << 4u) +/* Client allows body block (including headers in no FLAG_MILTER) */ +#define RSPAMD_TASK_PROTOCOL_FLAG_BODY_BLOCK (1u << 5u) +/* Emit groups information */ +#define RSPAMD_TASK_PROTOCOL_FLAG_GROUPS (1u << 6u) +#define RSPAMD_TASK_PROTOCOL_FLAG_MAX_SHIFT (6u) + +#define RSPAMD_TASK_IS_SKIPPED(task) (G_UNLIKELY((task)->flags & RSPAMD_TASK_FLAG_SKIP)) +#define RSPAMD_TASK_IS_SPAMC(task) (G_UNLIKELY((task)->cmd == CMD_CHECK_SPAMC)) +#define RSPAMD_TASK_IS_PROCESSED(task) (G_UNLIKELY((task)->processed_stages & RSPAMD_TASK_STAGE_DONE)) +#define RSPAMD_TASK_IS_CLASSIFIED(task) (((task)->processed_stages & RSPAMD_TASK_STAGE_CLASSIFIERS)) +#define RSPAMD_TASK_IS_EMPTY(task) (G_UNLIKELY((task)->flags & RSPAMD_TASK_FLAG_EMPTY)) +#define RSPAMD_TASK_IS_PROFILING(task) (G_UNLIKELY((task)->flags & RSPAMD_TASK_FLAG_PROFILE)) +#define RSPAMD_TASK_IS_MIME(task) (G_LIKELY((task)->flags & RSPAMD_TASK_FLAG_MIME)) + +struct rspamd_email_address; +struct rspamd_lang_detector; +enum rspamd_newlines_type; +struct rspamd_message; + +struct rspamd_task_data_storage { + const gchar *begin; + gsize len; + gchar *fpath; +}; + +struct rspamd_request_header_chain { + rspamd_ftok_t *hdr; + struct rspamd_request_header_chain *next; +}; + +__KHASH_TYPE(rspamd_req_headers_hash, rspamd_ftok_t *, struct rspamd_request_header_chain *); + +struct rspamd_lua_cached_entry { + gint ref; + guint id; +}; + +KHASH_INIT(rspamd_task_lua_cache, char *, struct rspamd_lua_cached_entry, 1, kh_str_hash_func, kh_str_hash_equal); + +/** + * Worker task structure + */ +struct rspamd_task { + struct rspamd_worker *worker; /**< pointer to worker object */ + enum rspamd_command cmd; /**< command */ + gint sock; /**< socket descriptor */ + guint32 dns_requests; /**< number of DNS requests per this task */ + guint32 flags; /**< Bit flags */ + guint32 protocol_flags; + guint32 processed_stages; /**< bits of stages that are processed */ + gchar *helo; /**< helo header value */ + gchar *queue_id; /**< queue id if specified */ + rspamd_inet_addr_t *from_addr; /**< from addr for a task */ + rspamd_inet_addr_t *client_addr; /**< address of connected socket */ + gchar *deliver_to; /**< address to deliver */ + gchar *auth_user; /**< SMTP authenticated user */ + const gchar *hostname; /**< hostname reported by MTA */ + khash_t(rspamd_req_headers_hash) * request_headers; /**< HTTP headers in a request */ + struct rspamd_task_data_storage msg; /**< message buffer */ + struct rspamd_http_connection *http_conn; /**< HTTP server connection */ + struct rspamd_async_session *s; /**< async session object */ + struct rspamd_scan_result *result; /**< Metric result */ + khash_t(rspamd_task_lua_cache) lua_cache; /**< cache of lua objects */ + GPtrArray *tokens; /**< statistics tokens */ + GArray *meta_words; /**< rspamd_stat_token_t produced from meta headers + (e.g. Subject) */ + + GPtrArray *rcpt_envelope; /**< array of rspamd_email_address */ + struct rspamd_email_address *from_envelope; + struct rspamd_email_address *from_envelope_orig; + + ucl_object_t *messages; /**< list of messages that would be reported */ + struct rspamd_re_runtime *re_rt; /**< regexp runtime */ + GPtrArray *stat_runtimes; /**< backend runtime */ + struct rspamd_config *cfg; /**< pointer to config object */ + GError *err; + rspamd_mempool_t *task_pool; /**< memory pool for task */ + double time_real_finish; + ev_tstamp task_timestamp; + + gboolean (*fin_callback)(struct rspamd_task *task, void *arg); + /**< callback for filters finalizing */ + void *fin_arg; /**< argument for fin callback */ + + struct rspamd_dns_resolver *resolver; /**< DNS resolver */ + struct ev_loop *event_loop; /**< Event base */ + struct ev_timer timeout_ev; /**< Global task timeout */ + struct ev_io guard_ev; /**< Event for input sanity guard */ + + gpointer symcache_runtime; /**< Opaque checkpoint data */ + ucl_object_t *settings; /**< Settings applied to task */ + struct rspamd_config_settings_elt *settings_elt; /**< preprocessed settings id elt */ + + const gchar *classifier; /**< Classifier to learn (if needed) */ + struct rspamd_lang_detector *lang_det; /**< Languages detector */ + struct rspamd_message *message; +}; + +/** + * Construct new task for worker + */ +struct rspamd_task *rspamd_task_new(struct rspamd_worker *worker, + struct rspamd_config *cfg, + rspamd_mempool_t *pool, + struct rspamd_lang_detector *lang_det, + struct ev_loop *event_loop, + gboolean debug_mem); + +/** + * Destroy task object and remove its IO dispatcher if it exists + */ +void rspamd_task_free(struct rspamd_task *task); + +/** + * Called if all filters are processed + * @return TRUE if session should be terminated + */ +gboolean rspamd_task_fin(void *arg); + +/** + * Load HTTP message with body in `msg` to an rspamd_task + * @param task + * @param msg + * @param start + * @param len + * @return + */ +gboolean rspamd_task_load_message(struct rspamd_task *task, + struct rspamd_http_message *msg, + const gchar *start, gsize len); + +/** + * Process task + * @param task task to process + * @return task has been successfully parsed and processed + */ +gboolean rspamd_task_process(struct rspamd_task *task, guint stages); + +/** + * Return address of sender or NULL + * @param task + * @return + */ +struct rspamd_email_address *rspamd_task_get_sender(struct rspamd_task *task); + +/** + * Return addresses in the following precedence: + * - deliver to + * - the first smtp recipient + * - the first mime recipient + * @param task + * @return + */ +const gchar *rspamd_task_get_principal_recipient(struct rspamd_task *task); + +/** + * Add a recipient for a task + * @param task task object + * @param rcpt string representation of recipient address + * @return TRUE if an address has been parsed and added + */ +gboolean rspamd_task_add_recipient(struct rspamd_task *task, const gchar *rcpt); + +/** + * Learn specified statfile with message in a task + * @param task worker's task object + * @param classifier classifier to learn (or NULL to learn all) + * @param err pointer to GError + * @return true if learn succeed + */ +gboolean rspamd_learn_task_spam(struct rspamd_task *task, + gboolean is_spam, + const gchar *classifier, + GError **err); + +/** + * Returns required score for a message (usually reject score) + * @param task + * @param m + * @return + */ +struct rspamd_scan_result; + +gdouble rspamd_task_get_required_score(struct rspamd_task *task, + struct rspamd_scan_result *m); + +/** + * Returns the first header as value for a header + * @param task + * @param name + * @return + */ +rspamd_ftok_t *rspamd_task_get_request_header(struct rspamd_task *task, + const gchar *name); + +/** + * Returns all headers with the specific name + * @param task + * @param name + * @return + */ +struct rspamd_request_header_chain *rspamd_task_get_request_header_multiple( + struct rspamd_task *task, + const gchar *name); + +/** + * Adds a new request header to task (name and value should be mapped to fstring) + * @param task + * @param name + * @param value + */ +void rspamd_task_add_request_header(struct rspamd_task *task, + rspamd_ftok_t *name, rspamd_ftok_t *value); + +/** + * Write log line about the specified task if needed + */ +void rspamd_task_write_log(struct rspamd_task *task); + +/** + * Set profiling value for a specific key + * @param task + * @param key + * @param value + */ +void rspamd_task_profile_set(struct rspamd_task *task, const gchar *key, + gdouble value); + +/** + * Get value for a specific profiling key + * @param task + * @param key + * @return + */ +gdouble *rspamd_task_profile_get(struct rspamd_task *task, const gchar *key); + +/** + * Sets finishing time for a task if not yet set + * @param task + * @return + */ +gboolean rspamd_task_set_finish_time(struct rspamd_task *task); + +/** + * Returns task processing stage name + * @param stg + * @return + */ +const gchar *rspamd_task_stage_name(enum rspamd_task_stage stg); + +/* + * Called on forced timeout + */ +void rspamd_task_timeout(EV_P_ ev_timer *w, int revents); + +/* + * Called on unexpected IO error (e.g. ECONNRESET) + */ +void rspamd_worker_guard_handler(EV_P_ ev_io *w, int revents); + +#ifdef __cplusplus +} +#endif + +#endif /* TASK_H_ */ |