From: c vw <dl1ycf@darc.de>
Date: Wed, 8 Jul 2020 13:24:32 +0000 (+0200)
Subject: a) auto-start option (only if compiled with AUTOSTART).
X-Git-Url: https://git.rkrishnan.org/pf/simplejson/bar.txt?a=commitdiff_plain;h=c83f756e9c89c1b16e5a20e8416f9982ca23a789;p=pihpsdr.git

a) auto-start option (only if compiled with AUTOSTART).
b) make it work with APIPA addresses
---

diff --git a/discovery.c b/discovery.c
index 0ecb45e..d7efd4a 100644
--- a/discovery.c
+++ b/discovery.c
@@ -363,6 +363,56 @@ void discovery() {
 
   status_text("Discovery");
   
+#ifdef AUTOSTART_OPTION
+//
+// An option suggested by Chris AG5RR / VK3ICM
+//
+// If a radio is found with a specific hardware address told to piHPSDR,
+// then it is started immediately at this point
+//
+   char *myradio=getenv("STARTMYHARDWARE");
+   g_print("GETENV returns %p\n", myradio);
+   if (myradio && devices > 0) {
+     int mymac[6];
+     mymac[5]=-1;
+     g_print("Consider starting radio with HW addr=%s\n", myradio);
+     sscanf(myradio,"%02x.%02x.%02x.%02x.%02x.%02x",          &mymac[0],&mymac[1],&mymac[2],&mymac[3],&mymac[4],&mymac[5]);
+     g_print("HW addr parsed=%02x.%02x.%02x.%02x.%02x.%02x\n", mymac[0] ,mymac[1], mymac[2], mymac[3], mymac[4], mymac[5]);
+     for (int i=0; i < devices; i++) {
+       d=&discovered[i];
+#ifdef USBOZY
+       if (d->device == DEVICE_OZY) break;		// no MAC addr available
+#endif
+#ifdef SOAPYSDR
+       if (d->protocol == SOAPYSDR_PROTOCOL) break;	// no MAC addr available
+#endif
+#ifdef STEMLAB_DISCOVERY
+       if (d->protocol == STEMLAB_PROTOCOL) break;	// no MAC addr available (at this point)
+#endif
+       if(d->status!=STATE_AVAILABLE) break;		// in use or other problem
+       // not on the same subnet so cannot start it (but allow APIPA!)
+       if (strncmp(inet_ntoa(d->info.network.address.sin_addr),"169.254.",8)) {
+         if((d->info.network.interface_address.sin_addr.s_addr&d->info.network.interface_netmask.sin_addr.s_addr) != (d->info.network.address.sin_addr.s_addr&d->info.network.interface_netmask.sin_addr.s_addr)) break;
+       }
+//
+//     Now we consider starting THIS radio, if the HW address matches
+//
+       if (d->info.network.mac_address[0] != mymac[0]) break;
+       if (d->info.network.mac_address[1] != mymac[1]) break;
+       if (d->info.network.mac_address[2] != mymac[2]) break;
+       if (d->info.network.mac_address[3] != mymac[3]) break;
+       if (d->info.network.mac_address[4] != mymac[4]) break;
+       if (d->info.network.mac_address[5] != mymac[5]) break;
+//
+//     all tests passed. Start this radio
+//
+       radio=d;
+       start_radio();
+       return;
+     }
+   }
+#endif
+
     fprintf(stderr,"discovery: found %d devices\n", devices);
     gdk_window_set_cursor(gtk_widget_get_window(top_window),gdk_cursor_new(GDK_ARROW));
     discovery_dialog = gtk_dialog_new();
@@ -471,10 +521,18 @@ fprintf(stderr,"%p Protocol=%d name=%s\n",d,d->protocol,d->name);
         if(d->device!=SOAPYSDR_USB_DEVICE) {
 #endif
           // if not on the same subnet then cannot start it
-          if((d->info.network.interface_address.sin_addr.s_addr&d->info.network.interface_netmask.sin_addr.s_addr) != (d->info.network.address.sin_addr.s_addr&d->info.network.interface_netmask.sin_addr.s_addr)) {
-            gtk_button_set_label(GTK_BUTTON(start_button),"Subnet!");
-            gtk_widget_set_sensitive(start_button, FALSE);
-          }
+	  //
+	  // DL1YCF: APIPA modification
+	  // so-called APIPA addresses are of the numerical form 169.254.xxx.yyy and these addresses are used
+	  // by many radios if they do not get a DHCP address. These addresses are valid even if outside the
+	  // netmask of the (physical) interface making the connection - so do not complain in this case!
+	  //
+          if (strncmp(inet_ntoa(d->info.network.address.sin_addr),"169.254.",8)) {
+            if((d->info.network.interface_address.sin_addr.s_addr&d->info.network.interface_netmask.sin_addr.s_addr) != (d->info.network.address.sin_addr.s_addr&d->info.network.interface_netmask.sin_addr.s_addr)) {
+              gtk_button_set_label(GTK_BUTTON(start_button),"Subnet!");
+              gtk_widget_set_sensitive(start_button, FALSE);
+            }
+	  }
 #ifdef SOAPYSDR
         }
 #endif