Only allow chat if node is in use... also, allow ESC to abort waiting

for ack from user.

src/sbbs3/umonitor/chat.c

@@ -217,7 +217,13 @@ int chat(scfg_t *cfg, int nodenum, node_t *node, box_t *boxch) {
 		if(getnodedat(cfg,nodenum,node,NULL)) {
 			break;
 		}
-	    if(node->misc&NODE_LCHAT) {
+		if(node->misc&NODE_LCHAT) {
+			if((ch=wgetch(swin))) {
+				if(ch==ESC || ch==3) {
+					close(in);
+					in=-1;
+				}
+			}
 			YIELD();
 			continue;
 		}

src/sbbs3/umonitor/umonitor.c

@@ -358,6 +358,7 @@ int main(int argc, char** argv)  {
                     uifc.esc_delay=atoi(argv[i]+2);
                     break;
 				case 'I':
+					/* Set up ex-ascii codes */
 					boxch.ls=186; 
 					boxch.rs=186;
 					boxch.ts=205;
@@ -419,6 +420,7 @@ int main(int argc, char** argv)  {
 						"\nCTRL-E displays the error log"
 						"\nF12 spys on the currently selected node"
 						"\nF11 send message to the currently selected node"
+						"\nF10 Chats with the user on the currently selected node"
 						"\nDEL Clear errors on currently selected node"
 						"\nCTRL-L Lock node toggle"
 						"\nCTRL-R Rerun node"
@@ -460,7 +462,12 @@ int main(int argc, char** argv)  {
 		}
 
 		if(j==-2-KEY_F(10)) {	/* Chat */
-			chat(&cfg,main_dflt+1,&node,&boxch);
+			if(getnodedat(&cfg,main_dflt+1,&node,NULL)) {
+				uifc.msg("Error reading node data!");
+				continue;
+			}
+			if((node.status&NODE_INUSE) && node.useron)
+				chat(&cfg,main_dflt+1,&node,&boxch);
 			continue;
 		}