* Renamed the 'jabber' module to 'xmpp' module. Also renamed functions starting...

[citadel.git] / citadel / modules / xmpp / xmpp_queue.c

diff --git a/citadel/modules/xmpp/xmpp_queue.c b/citadel/modules/xmpp/xmpp_queue.c
new file mode 100644 (file)
index 0000000..3bd8c95
--- /dev/null
+++ b/citadel/modules/xmpp/xmpp_queue.c
@@ -0,0 +1,150 @@
+/*
+ * $Id$ 
+ *
+ * XMPP event queue
+ *
+ * Copyright (c) 2007-2009 by Art Cancro
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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
+ *
+ */
+
+#include "sysdep.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <pwd.h>
+#include <errno.h>
+#include <sys/types.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+#include <sys/wait.h>
+#include <string.h>
+#include <limits.h>
+#include <ctype.h>
+#include <expat.h>
+#include <libcitadel.h>
+#include "citadel.h"
+#include "server.h"
+#include "citserver.h"
+#include "support.h"
+#include "config.h"
+#include "internet_addressing.h"
+#include "md5.h"
+#include "ctdl_module.h"
+#include "serv_xmpp.h"
+
+int queue_event_seq = 0;
+
+void xmpp_queue_event(int event_type, char *email_addr) {
+
+       struct xmpp_event *xptr = NULL;
+       struct xmpp_event *new_event = NULL;
+       struct xmpp_event *last = NULL;
+       int purged_something = 0;
+       struct CitContext *cptr;
+
+       CtdlLogPrintf(CTDL_DEBUG, "xmpp_queue_event(%d, %s)\n", event_type, email_addr);
+
+       /* Purge events more than a minute old */
+       begin_critical_section(S_XMPP_QUEUE);
+       do {
+               purged_something = 0;
+               if (xmpp_queue != NULL) {
+                       if ((time(NULL) - xmpp_queue->event_time) > 60) {
+                               xptr = xmpp_queue->next;
+                               free(xmpp_queue);
+                               xmpp_queue = xptr;
+                               purged_something = 1;
+                       }
+               }
+       } while(purged_something);
+       end_critical_section(S_XMPP_QUEUE);
+
+       /* Create a new event */
+       new_event = (struct xmpp_event *) malloc(sizeof(struct xmpp_event));
+       new_event->next = NULL;
+       new_event->event_time = time(NULL);
+       new_event->event_seq = ++queue_event_seq;
+       new_event->event_type = event_type;
+       new_event->session_which_generated_this_event = CC->cs_pid;
+       safestrncpy(new_event->event_jid, email_addr, sizeof new_event->event_jid);
+
+       /* Add it to the list */
+       begin_critical_section(S_XMPP_QUEUE);
+       if (xmpp_queue == NULL) {
+               xmpp_queue = new_event;
+       }
+       else {
+               for (xptr = xmpp_queue; xptr != NULL; xptr = xptr->next) {
+                       if (xptr->next == NULL) {
+                               last = xptr;
+                       }
+               }
+               last->next = new_event;
+       }
+       end_critical_section(S_XMPP_QUEUE);
+
+       /* Tell the sessions that something is happening */
+       begin_critical_section(S_SESSION_TABLE);
+       for (cptr = ContextList; cptr != NULL; cptr = cptr->next) {
+               if ((cptr->logged_in) && (cptr->h_async_function == xmpp_async_loop)) {
+                       cptr->async_waiting = 1;
+               }
+       }
+       end_critical_section(S_SESSION_TABLE);
+}
+
+
+/* 
+ * Are we interested in anything from the queue?  (Called in async loop)
+ */
+void xmpp_process_events(void) {
+       struct xmpp_event *xptr = NULL;
+       int highest_event = 0;
+
+       for (xptr=xmpp_queue; xptr!=NULL; xptr=xptr->next) {
+               if (xptr->event_seq > XMPP->last_event_processed) {
+
+                       switch(xptr->event_type) {
+
+                               case XMPP_EVT_LOGIN:
+                               case XMPP_EVT_LOGOUT:
+                                       if (xptr->session_which_generated_this_event != CC->cs_pid) {
+                                               xmpp_presence_notify(xptr->event_jid, xptr->event_type);
+                                       }
+                                       break;
+                       }
+
+                       if (xptr->event_seq > highest_event) {
+                               highest_event = xptr->event_seq;
+                       }
+               }
+       }
+
+       XMPP->last_event_processed = highest_event;
+}