447 lines
10 KiB
C
447 lines
10 KiB
C
/* handler.c
|
|
** XMPP client library -- event handler management
|
|
**
|
|
** Copyright (C) 2005 OGG, LCC. All rights reserved.
|
|
**
|
|
** This software is provided AS-IS with no warranty, either express
|
|
** or implied.
|
|
**
|
|
** This software is distributed under license and may not be copied,
|
|
** modified or distributed except as expressly authorized under the
|
|
** terms of the license contained in the file LICENSE.txt in this
|
|
** distribution.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
|
|
#include "xmpp.h"
|
|
#include "common.h"
|
|
|
|
void handler_fire_stanza(xmpp_conn_t * const conn,
|
|
xmpp_stanza_t * const stanza)
|
|
{
|
|
xmpp_handlist_t *item, *prev;
|
|
char *id, *ns, *name, *type;
|
|
|
|
/* call id handlers */
|
|
id = xmpp_stanza_get_id(stanza);
|
|
if (id) {
|
|
item = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
|
|
for (; item; item = item->next) {
|
|
if (item->user_handler && !conn->authenticated)
|
|
continue;
|
|
|
|
((xmpp_handler)(item->handler))(conn, stanza, item->userdata);
|
|
}
|
|
}
|
|
|
|
/* call handlers */
|
|
ns = xmpp_stanza_get_ns(stanza);
|
|
name = xmpp_stanza_get_name(stanza);
|
|
type = xmpp_stanza_get_type(stanza);
|
|
|
|
/* enable all added handlers */
|
|
for (item = conn->handlers; item; item = item->next)
|
|
item->enabled = 1;
|
|
|
|
prev = NULL;
|
|
item = conn->handlers;
|
|
while (item) {
|
|
/* skip newly added handlers */
|
|
if (!item->enabled) {
|
|
item = item->next;
|
|
continue;
|
|
}
|
|
|
|
/* don't call user handlers until authentication succeeds */
|
|
if (item->user_handler && !conn->authenticated) {
|
|
item = item->next;
|
|
continue;
|
|
}
|
|
|
|
if ((!item->ns || (ns && strcmp(ns, item->ns) == 0)) &&
|
|
(!item->name || (name && strcmp(name, item->name) == 0)) &&
|
|
(!item->type || (type && strcmp(type, item->type) == 0)))
|
|
if (!((xmpp_handler)(item->handler))(conn, stanza, item->userdata)) {
|
|
/* handler is one-shot, so delete it */
|
|
if (prev)
|
|
prev->next = item->next;
|
|
else
|
|
conn->handlers = item->next;
|
|
xmpp_free(conn->ctx, item);
|
|
item = NULL;
|
|
}
|
|
|
|
if (item) {
|
|
prev = item;
|
|
item = item->next;
|
|
} else if (prev)
|
|
item = prev->next;
|
|
else
|
|
item = conn->handlers;
|
|
}
|
|
}
|
|
|
|
/* helper function to fire timed handlers. returns the
|
|
* time until the next handler would be fired */
|
|
uint64_t handler_fire_timed(xmpp_ctx_t * const ctx)
|
|
{
|
|
xmpp_connlist_t *connitem;
|
|
xmpp_handlist_t *handitem, *temp;
|
|
int ret, fired;
|
|
uint64_t elapsed, min;
|
|
|
|
min = (uint64_t)(-1);
|
|
|
|
connitem = ctx->connlist;
|
|
while (connitem) {
|
|
if (connitem->conn->state != XMPP_STATE_CONNECTED) {
|
|
connitem = connitem->next;
|
|
continue;
|
|
}
|
|
|
|
/* enable all handlers that were added */
|
|
for (handitem = connitem->conn->timed_handlers; handitem;
|
|
handitem = handitem->next)
|
|
handitem->enabled = 1;
|
|
|
|
handitem = connitem->conn->timed_handlers;
|
|
while (handitem) {
|
|
/* skip newly added handlers */
|
|
if (!handitem->enabled) {
|
|
handitem = handitem->next;
|
|
continue;
|
|
}
|
|
|
|
/* only fire user handlers after authentication */
|
|
if (handitem->user_handler && !connitem->conn->authenticated) {
|
|
handitem = handitem->next;
|
|
continue;
|
|
}
|
|
|
|
fired = 0;
|
|
elapsed = time_elapsed(handitem->last_stamp, time_stamp());
|
|
if (elapsed >= handitem->period) {
|
|
/* fire! */
|
|
fired = 1;
|
|
handitem->last_stamp = time_stamp();
|
|
ret = ((xmpp_timed_handler)handitem->handler)(connitem->conn, handitem->userdata);
|
|
} else if (min > (handitem->period - elapsed))
|
|
min = handitem->period - elapsed;
|
|
|
|
temp = handitem;
|
|
handitem = handitem->next;
|
|
|
|
/* delete handler if it returned false */
|
|
if (fired && !ret)
|
|
xmpp_timed_handler_delete(connitem->conn, temp->handler);
|
|
}
|
|
|
|
connitem = connitem->next;
|
|
}
|
|
|
|
return min;
|
|
}
|
|
|
|
/* reset timed handlers for a connection. this is called
|
|
* whenever connection is successful */
|
|
void handler_reset_timed(xmpp_conn_t *conn, int user_only)
|
|
{
|
|
xmpp_handlist_t *handitem;
|
|
|
|
handitem = conn->timed_handlers;
|
|
while (handitem) {
|
|
if ((user_only && handitem->user_handler) || !user_only)
|
|
handitem->last_stamp = time_stamp();
|
|
|
|
handitem = handitem->next;
|
|
}
|
|
}
|
|
|
|
static void _timed_handler_add(xmpp_conn_t * const conn,
|
|
xmpp_timed_handler handler,
|
|
const unsigned long period,
|
|
void * const userdata,
|
|
const int user_handler)
|
|
{
|
|
xmpp_handlist_t *item, *tail;
|
|
|
|
/* check if handler is already in the list */
|
|
for (item = conn->timed_handlers; item; item = item->next) {
|
|
if (item->handler == (void *)handler)
|
|
break;
|
|
}
|
|
if (item) return;
|
|
|
|
/* build new item */
|
|
item = xmpp_alloc(conn->ctx, sizeof(xmpp_handlist_t));
|
|
if (!item) return;
|
|
|
|
item->user_handler = user_handler;
|
|
item->handler = (void *)handler;
|
|
item->userdata = userdata;
|
|
item->enabled = 0;
|
|
item->next = NULL;
|
|
|
|
item->period = period;
|
|
item->last_stamp = time_stamp();
|
|
|
|
/* append item to list */
|
|
if (!conn->timed_handlers)
|
|
conn->timed_handlers = item;
|
|
else {
|
|
tail = conn->timed_handlers;
|
|
while (tail->next)
|
|
tail = tail->next;
|
|
tail->next = item;
|
|
}
|
|
}
|
|
|
|
void xmpp_timed_handler_delete(xmpp_conn_t * const conn,
|
|
xmpp_timed_handler handler)
|
|
{
|
|
xmpp_handlist_t *item, *prev;
|
|
|
|
if (!conn->timed_handlers) return;
|
|
|
|
prev = NULL;
|
|
item = conn->timed_handlers;
|
|
while (item) {
|
|
if (item->handler == (void *)handler)
|
|
break;
|
|
prev = item;
|
|
item = item->next;
|
|
}
|
|
|
|
if (item) {
|
|
if (prev)
|
|
prev->next = item->next;
|
|
else
|
|
conn->timed_handlers = item->next;
|
|
|
|
xmpp_free(conn->ctx, item);
|
|
}
|
|
}
|
|
|
|
static void _id_handler_add(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const id,
|
|
void * const userdata, int user_handler)
|
|
{
|
|
xmpp_handlist_t *item, *tail;
|
|
|
|
/* check if handler is already in the list */
|
|
item = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
|
|
while (item) {
|
|
if (item->handler == (void *)handler)
|
|
break;
|
|
item = item->next;
|
|
}
|
|
if (item) return;
|
|
|
|
/* build new item */
|
|
item = xmpp_alloc(conn->ctx, sizeof(xmpp_handlist_t));
|
|
if (!item) return;
|
|
|
|
item->user_handler = user_handler;
|
|
item->handler = (void *)handler;
|
|
item->userdata = userdata;
|
|
item->enabled = 0;
|
|
item->next = NULL;
|
|
|
|
item->id = xmpp_strdup(conn->ctx, id);
|
|
if (!item->id) {
|
|
xmpp_free(conn->ctx, item);
|
|
return;
|
|
}
|
|
|
|
/* put on list in hash table */
|
|
tail = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
|
|
if (!tail)
|
|
hash_add(conn->id_handlers, id, item);
|
|
else {
|
|
while (tail->next)
|
|
tail = tail->next;
|
|
tail->next = item;
|
|
}
|
|
}
|
|
|
|
void xmpp_id_handler_delete(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const id)
|
|
{
|
|
xmpp_handlist_t *item, *prev;
|
|
|
|
prev = NULL;
|
|
item = (xmpp_handlist_t *)hash_get(conn->id_handlers, id);
|
|
if (!item) return;
|
|
|
|
while (item) {
|
|
if (item->handler == (void *)handler)
|
|
break;
|
|
|
|
prev = item;
|
|
item = item->next;
|
|
}
|
|
|
|
if (item) {
|
|
if (prev)
|
|
prev->next = item->next;
|
|
else {
|
|
hash_drop(conn->id_handlers, id);
|
|
hash_add(conn->id_handlers, id, item->next);
|
|
}
|
|
xmpp_free(conn->ctx, item->id);
|
|
xmpp_free(conn->ctx, item);
|
|
}
|
|
}
|
|
|
|
static void _handler_add(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const ns,
|
|
const char * const name,
|
|
const char * const type,
|
|
void * const userdata, int user_handler)
|
|
{
|
|
xmpp_handlist_t *item, *tail;
|
|
|
|
/* check if handler already in list */
|
|
for (item = conn->handlers; item; item = item->next) {
|
|
if (item->handler == (void *)handler)
|
|
break;
|
|
}
|
|
if (item) return;
|
|
|
|
/* build new item */
|
|
item = (xmpp_handlist_t *)xmpp_alloc(conn->ctx, sizeof(xmpp_handlist_t));
|
|
if (!item) return;
|
|
|
|
item->user_handler = user_handler;
|
|
item->handler = (void *)handler;
|
|
item->userdata = userdata;
|
|
item->enabled = 0;
|
|
item->next = NULL;
|
|
|
|
if (ns) {
|
|
item->ns = xmpp_strdup(conn->ctx, ns);
|
|
if (!item->ns) {
|
|
xmpp_free(conn->ctx, item);
|
|
return;
|
|
}
|
|
} else
|
|
item->ns = NULL;
|
|
if (name) {
|
|
item->name = xmpp_strdup(conn->ctx, name);
|
|
if (!item->name) {
|
|
if (item->ns) xmpp_free(conn->ctx, item->ns);
|
|
xmpp_free(conn->ctx, item);
|
|
return;
|
|
}
|
|
} else
|
|
item->name = NULL;
|
|
if (type) {
|
|
item->type = xmpp_strdup(conn->ctx, type);
|
|
if (!item->type) {
|
|
if (item->ns) xmpp_free(conn->ctx, item->ns);
|
|
if (item->name) xmpp_free(conn->ctx, item->name);
|
|
xmpp_free(conn->ctx, item);
|
|
}
|
|
} else
|
|
item->type = NULL;
|
|
|
|
/* append to list */
|
|
if (!conn->handlers)
|
|
conn->handlers = item;
|
|
else {
|
|
tail = conn->handlers;
|
|
while (tail->next)
|
|
tail = tail->next;
|
|
tail->next = item;
|
|
}
|
|
}
|
|
|
|
void xmpp_handler_delete(xmpp_conn_t * const conn,
|
|
xmpp_handler handler)
|
|
{
|
|
xmpp_handlist_t *prev, *item;
|
|
|
|
if (!conn->handlers) return;
|
|
|
|
prev = NULL;
|
|
item = conn->handlers;
|
|
while (item) {
|
|
if (item->handler == (void *)handler)
|
|
break;
|
|
|
|
prev = item;
|
|
item = item->next;
|
|
}
|
|
|
|
if (item) {
|
|
if (prev)
|
|
prev->next = item->next;
|
|
else
|
|
conn->handlers = item->next;
|
|
|
|
if (item->ns) xmpp_free(conn->ctx, item->ns);
|
|
if (item->name) xmpp_free(conn->ctx, item->name);
|
|
if (item->type) xmpp_free(conn->ctx, item->type);
|
|
xmpp_free(conn->ctx, item);
|
|
}
|
|
}
|
|
|
|
void xmpp_timed_handler_add(xmpp_conn_t * const conn,
|
|
xmpp_timed_handler handler,
|
|
const unsigned long period,
|
|
void * const userdata)
|
|
{
|
|
_timed_handler_add(conn, handler, period, userdata, 1);
|
|
}
|
|
|
|
void handler_add_timed(xmpp_conn_t * const conn,
|
|
xmpp_timed_handler handler,
|
|
const unsigned long period,
|
|
void * const userdata)
|
|
{
|
|
_timed_handler_add(conn, handler, period, userdata, 0);
|
|
}
|
|
|
|
void xmpp_id_handler_add(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const id,
|
|
void * const userdata)
|
|
{
|
|
_id_handler_add(conn, handler, id, userdata, 1);
|
|
}
|
|
|
|
void handler_add_id(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const id,
|
|
void * const userdata)
|
|
{
|
|
_id_handler_add(conn, handler, id, userdata, 0);
|
|
}
|
|
|
|
void xmpp_handler_add(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const ns,
|
|
const char * const name,
|
|
const char * const type,
|
|
void * const userdata)
|
|
{
|
|
_handler_add(conn, handler, ns, name, type, userdata, 1);
|
|
}
|
|
|
|
void handler_add(xmpp_conn_t * const conn,
|
|
xmpp_handler handler,
|
|
const char * const ns,
|
|
const char * const name,
|
|
const char * const type,
|
|
void * const userdata)
|
|
{
|
|
_handler_add(conn, handler, ns, name, type, userdata, 0);
|
|
}
|