+
+#ifdef WITH_MISDN
+/*
+ * hunts an mISDNport that is available for an outgoing call
+ * if no ifname was given, any interface that is not an extension
+ * will be searched.
+ */
+struct mISDNport *EndpointApp::hunt_port(char *ifname, int *channel)
+{
+ struct interface *interface;
+ struct interface_port *ifport, *ifport_start;
+ struct select_channel *selchannel;
+ struct mISDNport *mISDNport;
+ int index, i;
+ int there_is_an_external = 0;
+
+ interface = interface_first;
+
+ /* first find the given interface or, if not given, one with no extension */
+ checknext:
+ if (!interface) {
+ if (!there_is_an_external && !(ifname && ifname[0])) {
+ trace_header("CHANNEL SELECTION (no external interface specified)", DIRECTION_NONE);
+ add_trace("info", NULL, "Add 'extern' parameter to interface.conf.");
+ end_trace();
+ }
+ return(NULL);
+ }
+
+ /* check for given interface */
+ if (ifname && ifname[0]) {
+ if (!strcasecmp(interface->name, ifname)) {
+ /* found explicit interface */
+ trace_header("CHANNEL SELECTION (found given interface)", DIRECTION_NONE);
+ add_trace("interface", NULL, "%s", ifname);
+ end_trace();
+ goto foundif;
+ }
+
+ } else {
+ if (interface->external) {
+ there_is_an_external = 1;
+ /* found non extension */
+ trace_header("CHANNEL SELECTION (found external interface)", DIRECTION_NONE);
+ add_trace("interface", NULL, "%s", interface->name);
+ end_trace();
+ goto foundif;
+ }
+ }
+
+ interface = interface->next;
+ goto checknext;
+foundif:
+
+ /* see if interface has ports */
+ if (!interface->ifport) {
+ /* no ports */
+ trace_header("CHANNEL SELECTION (active ports, skipping)", DIRECTION_NONE);
+ add_trace("interface", NULL, "%s", interface->name);
+ end_trace();
+ interface = interface->next;
+ goto checknext;
+ }
+
+ /* select port by algorithm */
+ ifport_start = interface->ifport;
+ index = 0;
+ if (interface->hunt == HUNT_ROUNDROBIN) {
+ while(ifport_start->next && index<interface->hunt_next) {
+ ifport_start = ifport_start->next;
+ index++;
+ }
+ trace_header("CHANNEL SELECTION (starting round-robin)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport_start->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ }
+
+ /* loop ports */
+ ifport = ifport_start;
+ nextport:
+
+ /* see if port is available */
+ if (!ifport->mISDNport) {
+ trace_header("CHANNEL SELECTION (port not available, skipping)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ goto portbusy;
+ }
+ mISDNport = ifport->mISDNport;
+
+ /* see if port is administratively blocked */
+ if (ifport->block) {
+ trace_header("CHANNEL SELECTION (port blocked by admin, skipping)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ goto portbusy;
+ }
+
+ /* see if link is up on PTP*/
+ if (mISDNport->l2hold && mISDNport->l2link<1) {
+ trace_header("CHANNEL SELECTION (port's layer 2 is down, skipping)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ goto portbusy;
+ }
+
+ /* check for channel form selection list */
+ *channel = 0;
+#ifdef WITH_SS5
+ if (mISDNport->ss5) {
+ class Pss5 *port;
+ port = ss5_hunt_line(mISDNport);
+ if (port) {
+ *channel = port->p_m_b_channel;
+ trace_header("CHANNEL SELECTION (selecting SS5 channel)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ add_trace("channel", NULL, "%d", *channel);
+ end_trace();
+ }
+ } else
+#endif
+ {
+ selchannel = ifport->out_channel;
+ while(selchannel) {
+ switch(selchannel->channel) {
+ case CHANNEL_FREE: /* free channel */
+ if (mISDNport->b_reserved >= mISDNport->b_num)
+ break; /* all channel in use or reserverd */
+ /* find channel */
+ i = 0;
+ while(i < mISDNport->b_num) {
+ if (mISDNport->b_port[i] == NULL) {
+ *channel = i+1+(i>=15);
+ trace_header("CHANNEL SELECTION (selecting free channel)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ add_trace("channel", NULL, "%d", *channel);
+ end_trace();
+ break;
+ }
+ i++;
+ }
+ if (*channel)
+ break;
+ trace_header("CHANNEL SELECTION (no channel is 'free')", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ break;
+
+ case CHANNEL_ANY: /* don't ask for channel */
+ if (mISDNport->b_reserved >= mISDNport->b_num) {
+ trace_header("CHANNEL SELECTION (cannot ask for 'any' channel, all reserved)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ add_trace("total", NULL, "%d", mISDNport->b_num);
+ add_trace("reserved", NULL, "%d", mISDNport->b_reserved);
+ end_trace();
+ break; /* all channel in use or reserverd */
+ }
+ trace_header("CHANNEL SELECTION (using 'any' channel)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ *channel = CHANNEL_ANY;
+ break;
+
+ case CHANNEL_NO: /* call waiting */
+ trace_header("CHANNEL SELECTION (using 'no' channel, call-waiting)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+ *channel = CHANNEL_NO;
+ break;
+
+ default:
+ if (selchannel->channel<1 || selchannel->channel==16) {
+ trace_header("CHANNEL SELECTION (channel out of range)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ add_trace("channel", NULL, "%d", selchannel->channel);
+ end_trace();
+ break; /* invalid channels */
+ }
+ i = selchannel->channel-1-(selchannel->channel>=17);
+ if (i >= mISDNport->b_num) {
+ trace_header("CHANNEL SELECTION (channel out of range)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ add_trace("channel", NULL, "%d", selchannel->channel);
+ add_trace("channels", NULL, "%d", mISDNport->b_num);
+ end_trace();
+ break; /* channel not in port */
+ }
+ if (mISDNport->b_port[i] == NULL) {
+ *channel = selchannel->channel;
+ trace_header("CHANNEL SELECTION (selecting given channel)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ add_trace("channel", NULL, "%d", *channel);
+ end_trace();
+ break;
+ }
+ break;
+ }
+ if (*channel)
+ break; /* found channel */
+ selchannel = selchannel->next;
+ }
+ }
+
+ /* if channel was found, return mISDNport and channel */
+ if (*channel) {
+ /* setting next port to start next time */
+ if (interface->hunt == HUNT_ROUNDROBIN) {
+ index++;
+ if (!ifport->next)
+ index = 0;
+ interface->hunt_next = index;
+ }
+
+ return(mISDNport);
+ }
+
+ trace_header("CHANNEL SELECTION (skipping, no channel found)", DIRECTION_NONE);
+ add_trace("port", NULL, "%d", ifport->portnum);
+ add_trace("position", NULL, "%d", index);
+ end_trace();
+
+ portbusy:
+ /* go next port, until all ports are checked */
+ index++;
+ ifport = ifport->next;
+ if (!ifport) {
+ index = 0;
+ ifport = interface->ifport;
+ }
+ if (ifport != ifport_start)
+ goto nextport;
+
+ if (!ifname) {
+ interface = interface->next;
+ goto checknext;
+ }
+
+ return(NULL); /* no port found */
+}
+#endif
+
+/* hunts for the given interface
+ * it does not need to have an mISDNport instance */
+struct interface *EndpointApp::hunt_interface(char *ifname)
+{
+ struct interface *interface;
+ int there_is_an_external = 0;
+
+ interface = interface_first;
+
+ /* first find the given interface or, if not given, one with no extension */
+ checknext:
+ if (!interface) {
+ if (!there_is_an_external && !(ifname && ifname[0])) {
+ trace_header("CHANNEL SELECTION (no external interface specified)", DIRECTION_NONE);
+ add_trace("info", NULL, "Add 'extern' parameter to interface.conf.");
+ end_trace();
+ }
+ return(NULL);
+ }
+
+ /* check for given interface */
+ if (ifname && ifname[0]) {
+ if (!strcasecmp(interface->name, ifname)) {
+ /* found explicit interface */
+ trace_header("CHANNEL SELECTION (found given interface)", DIRECTION_NONE);
+ add_trace("interface", NULL, "%s", ifname);
+ end_trace();
+ goto foundif;
+ }
+ } else {
+ if (interface->external) {
+ there_is_an_external = 1;
+ /* found non extension */
+ trace_header("CHANNEL SELECTION (found external interface)", DIRECTION_NONE);
+ add_trace("interface", NULL, "%s", interface->name);
+ end_trace();
+ goto foundif;
+ }
+ }
+
+ interface = interface->next;
+ goto checknext;
+foundif:
+
+ return interface;
+}
+
+/* must be overloaded by specific app */
+void EndpointApp::trace_header(const char *name, int direction)
+{
+}
projects / lcr.git / commitdiff