--- /dev/null
+/*****************************************************************************\
+** **
+** PBX4Linux **
+** **
+**---------------------------------------------------------------------------**
+** Copyright: Andreas Eversberg **
+** **
+** join functions **
+** **
+\*****************************************************************************/
+
+#include <stdio.h>
+//#include <string.h>
+//#include <stdlib.h>
+//#include <unistd.h>
+//#include <poll.h>
+//#include <sys/types.h>
+//#include <sys/stat.h>
+//#include <fcntl.h>
+#include "main.h"
+//#define __u8 unsigned char
+//#define __u16 unsigned short
+//#define __u32 unsigned long
+//#include "linux/isdnif.h"
+
+unsigned long join_serial = 1; /* must be 1, because 0== no join */
+
+//JOIN_STATES
+
+class Join *join_first = NULL;
+
+/*
+ * find the join with join_id
+ */
+class Join *find_join_id(unsigned long join_id)
+{
+ class Join *join = join_first;
+
+ while(join)
+ {
+//printf("comparing: '%s' with '%s'\n", name, join->c_name);
+ if (join->c_serial == join_id)
+ return(join);
+ join = join->next;
+ }
+
+ return(NULL);
+}
+
+
+/*
+ * constructor for a new join
+ */
+Join::Join(void)
+{
+ class Join **joinp;
+
+ c_serial = join_serial++;
+ c_type = JOIN_TYPE_NONE;
+
+ /* attach to chain */
+ next = NULL;
+ joinp = &join_first;
+ while(*joinp)
+ joinp = &((*joinp)->next);
+ *joinp = this;
+
+ classuse++;
+}
+
+
+/*
+ * join descructor
+ */
+Join::~Join()
+{
+ class Join *cl, **clp;
+
+ classuse--;
+
+ cl = join_first;
+ clp = &join_first;
+ while(cl)
+ {
+ if (cl == this)
+ break;
+ clp = &cl->next;
+ cl = cl->next;
+ }
+ if (!cl)
+ FATAL("software error, join not in chain!\n");
+ *clp = cl->next; /* detach from chain */
+}
+
+
+
+/* epoint sends a message to a join
+ *
+ */
+void Join::message_epoint(unsigned long epoint_id, int message_type, union parameter *param)
+{
+}
+
+
+/* join process is called from the main loop
+ * it processes the current calling state.
+ * returns 0 if nothing was done
+ */
+int Join::handler(void)
+{
+ return(0);
+}
+
+/* free all join structures */
+void join_free(void)
+{
+
+ if (!join_first)
+ {
+ PDEBUG(DEBUG_JOIN, "no more pending join(s), done!\n");
+ return;
+ }
+ while(join_first)
+ {
+ if (options.deb & DEBUG_JOIN)
+ {
+ PDEBUG(DEBUG_JOIN, "freeing pending join\n");
+ }
+
+ delete join_first;
+ }
+}
+
+
+