Adds variable length callinfo packets to skinny.

Add packet 0x014A (variable length call info messages) to skinny for newer 
firmware. Plenty of unknown information but includes the equivalent functionality 
as the fixed size callinfo packet already included.
Only send this packet if protocol reported is >= 17.

Review: https://reviewboard.asterisk.org/r/2290/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@380755 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_skinny.c

@@ -1082,6 +1082,20 @@ struct dialed_number_message {
 	uint32_t callReference;
 };
 
+#define MAXCALLINFOSTR 256
+#define CALL_INFO_MESSAGE_VARIABLE 0x014A
+struct call_info_message_variable {
+	uint32_t instance;
+	uint32_t callreference;
+	uint32_t calldirection;
+	uint32_t unknown1;
+	uint32_t unknown2;
+	uint32_t unknown3;
+	uint32_t unknown4;
+	uint32_t unknown5;
+	char calldetails[MAXCALLINFOSTR];
+};
+
 union skinny_data {
 	struct alarm_message alarm;
 	struct speed_dial_stat_req_message speeddialreq;
@@ -1130,6 +1144,7 @@ union skinny_data {
 	struct enbloc_call_message enbloccallmessage;
 	struct forward_stat_message forwardstat;
 	struct bksp_req_message bkspmessage;
+	struct call_info_message_variable callinfomessagevariable;
 };
 
 /* packet composition */
@@ -2375,6 +2390,57 @@ static void transmit_callinfo(struct skinny_device *d, int instance, int callid,
 	transmit_response(d, req);
 }
 
+static void transmit_callinfo_variable(struct skinny_device *d, int instance, int callreference,
+	char *fromname, char *fromnum, char *toname, char *tonum, int calldirection)
+{
+	struct skinny_req *req;
+	char *strptr;
+	char *thestrings[12];
+	int i;
+	int callinfostrleft = MAXCALLINFOSTR;
+
+	if (!(req = req_alloc(sizeof(struct call_info_message_variable), CALL_INFO_MESSAGE_VARIABLE)))
+		return;
+
+	req->data.callinfomessagevariable.instance = htolel(instance);
+	req->data.callinfomessagevariable.callreference = htolel(callreference);
+	req->data.callinfomessagevariable.calldirection = htolel(calldirection);
+
+	req->data.callinfomessagevariable.unknown1 = htolel(0x00);
+	req->data.callinfomessagevariable.unknown2 = htolel(0x00);
+	req->data.callinfomessagevariable.unknown3 = htolel(0x00);
+	req->data.callinfomessagevariable.unknown4 = htolel(0x00);
+	req->data.callinfomessagevariable.unknown5 = htolel(0x00);
+
+	thestrings[0] = fromnum;
+	thestrings[1] = "";                     /* Appears to be origfrom */
+	thestrings[2] = tonum;
+	thestrings[3] = "";
+	thestrings[4] = "";
+	thestrings[5] = "";
+	thestrings[6] = "";
+	thestrings[7] = "";
+
+	thestrings[8] = "";
+	thestrings[9] = fromname;
+	thestrings[10] = toname;
+	thestrings[11] = "";
+
+	strptr = req->data.callinfomessagevariable.calldetails;
+
+	for(i = 0; i < 12; i++) {
+		ast_copy_string(strptr, thestrings[i], callinfostrleft);
+		strptr += strlen(thestrings[i]) + 1;
+		callinfostrleft -= strlen(thestrings[i]) + 1;
+	}
+
+	req->len = req->len - (callinfostrleft & ~0x3);
+
+	SKINNY_DEBUG(DEBUG_PACKET, 3, "Transmitting CALL_INFO_MESSAGE_VARIABLE to %s, to %s(%s) from %s(%s) (dir=%d) on %s(%d)\n",
+		d->name, toname, tonum, fromname, fromnum, calldirection, d->name, instance);
+	transmit_response(d, req);
+}
+
 static void send_callinfo(struct skinny_subchannel *sub)
 {
 	struct ast_channel *ast;
@@ -2407,7 +2473,12 @@ static void send_callinfo(struct skinny_subchannel *sub)
 		ast_verb(1, "Error sending Callinfo to %s(%d) - No call direction in sub\n", d->name, l->instance);
 		return;
 	}
-	transmit_callinfo(d, l->instance, sub->callid, fromname, fromnum, toname, tonum, sub->calldirection);
+
+	if (d->protocolversion < 17) {
+		transmit_callinfo(d, l->instance, sub->callid, fromname, fromnum, toname, tonum, sub->calldirection);
+	} else {
+		transmit_callinfo_variable(d, l->instance, sub->callid, fromname, fromnum, toname, tonum, sub->calldirection);
+	}
 }
 
 static void push_callinfo(struct skinny_subline *subline, struct skinny_subchannel *sub)
@@ -2442,7 +2513,12 @@ static void push_callinfo(struct skinny_subline *subline, struct skinny_subchann
 		ast_verb(1, "Error sending Callinfo to %s(%d) - No call direction in sub\n", d->name, l->instance);
 		return;
 	}
-	transmit_callinfo(subline->line->device, subline->line->instance, subline->callid, fromname, fromnum, toname, tonum, sub->calldirection);
+
+	if (d->protocolversion < 17) {
+		transmit_callinfo(subline->line->device, subline->line->instance, subline->callid, fromname, fromnum, toname, tonum, sub->calldirection);
+	} else {
+		transmit_callinfo_variable(subline->line->device, subline->line->instance, subline->callid, fromname, fromnum, toname, tonum, sub->calldirection);
+	}
 }
 
 static void transmit_connect(struct skinny_device *d, struct skinny_subchannel *sub)