104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/* Icecast
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*
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* This program is distributed under the GNU General Public License, version 2.
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* A copy of this license is included with this source.
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*
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* Copyright 2014-2018, Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>,
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*/
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#ifndef __EVENT_H__
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#define __EVENT_H__
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#include <libxml/xmlmemory.h>
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include "common/thread/thread.h"
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#include "icecasttypes.h"
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/* implemented */
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#define EVENT_TYPE_LOG "log"
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#define EVENT_TYPE_EXEC "exec"
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/* not implemented */
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#define EVENT_TYPE_URL "url"
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#define MAX_REGLISTS_PER_EVENT 8
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struct event_registration_tag;
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typedef struct event_registration_tag event_registration_t;
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struct event_tag;
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typedef struct event_tag event_t;
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/* this has no lock member to protect multiple accesses as every non-readonly access is within event.c
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* and is protected by global lock or on the same thread anyway.
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*/
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struct event_tag {
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/* refernece counter */
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size_t refcount;
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/* reference to next element in chain */
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event_t *next;
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/* event_registration lists.
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* They are referenced here to avoid the need to access
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* config and global client list each time an event is emitted.
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*/
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event_registration_t *reglist[MAX_REGLISTS_PER_EVENT];
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/* trigger name */
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char *trigger;
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/* from client */
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char *uri; /* from context */
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unsigned long connection_id; /* from client->con->id */
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char *connection_ip; /* from client->con->ip */
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time_t connection_time; /* from client->con->con_time */
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char *client_role; /* from client->role */
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char *client_username; /* from client->username */
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char *client_useragent; /* from httpp_getvar(client->parser, "user-agent") */
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admin_command_id_t client_admin_command; /* from client->admin_command */
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};
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struct event_registration_tag {
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/* refernece counter */
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size_t refcount;
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/* reference to next element in chain */
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event_registration_t *next;
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/* protection */
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mutex_t lock;
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/* type of event */
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char *type;
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/* trigger name */
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char *trigger;
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/* backend state */
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void *state;
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/* emit events */
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int (*emit)(void *state, event_t *event);
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/* free backend state */
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void (*free)(void *state);
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};
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/* subsystem functions */
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void event_initialise(void);
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void event_shutdown(void);
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/* basic functions to work with event registrations */
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event_registration_t * event_new_from_xml_node(xmlNodePtr node);
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void event_registration_addref(event_registration_t *er);
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void event_registration_release(event_registration_t *er);
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void event_registration_push(event_registration_t **er, event_registration_t *tail);
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/* event signaling */
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void event_emit_clientevent(const char *trigger, client_t *client, const char *uri);
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#define event_emit_global(x) event_emit_clientevent((x), NULL, NULL)
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#endif
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