Fix segfault for Kenwood L MICGAIN

Fix potential segfault in iofunc.c when stopset is null

rigs/kenwood/kenwood.c

@@ -2861,7 +2861,7 @@ static int kenwood_get_micgain_minmax(RIG *rig, int *micgain_now,
     if (retval != RIG_OK) { RETURNFUNC(retval); }
 
     retval = read_string(&rs->rigport, (unsigned char *) levelbuf, sizeof(levelbuf),
-                         NULL, 0, 0, 1);
+                         NULL, ";", 1, 1);
 
     rig_debug(RIG_DEBUG_TRACE, "%s: retval=%d\n", __func__, retval);
 

rigs/kenwood/kenwood.h

@@ -28,7 +28,7 @@
 #include "token.h"
 #include "idx_builtin.h"
 
-#define BACKEND_VER "20231011"
+#define BACKEND_VER "20231023"
 
 #define EOM_KEN ';'
 #define EOM_TH '\r'

simulators/simts590.c

@@ -32,6 +32,7 @@ int width_low = 0;
 int afgain = 50;
 int usb_af = 5;
 int usb_af_input = 2;
+int mic_gain = 50;
 
 int
 getmyline(int fd, char *buf)
@@ -153,8 +154,12 @@ int main(int argc, char *argv[])
         else if (strcmp(buf, "MG;") == 0)
         {
             hl_usleep(mysleep * 1000);
-            pbuf = "MG050;";
+            SNPRINTF(buf, sizeof(buf), "MG%03d;", mic_gain);
-            WRITE(fd, pbuf, strlen(pbuf));
+            WRITE(fd, buf, strlen(buf));
+        }
+        else if (strncmp(buf, "MG", 2) == 0)
+        {
+            sscanf(buf,"MG%d", &mic_gain);
         }
         else if (strcmp(buf, "AG0;") == 0)
         {

src/iofunc.c

@@ -1427,7 +1427,7 @@ static int read_string_generic(hamlib_port_t *p,
 //                          direct);
             }
                 // special read for FLRig
-    if (strcmp(stopset, "</methodResponse>") == 0)
+    if (stopset != NULL && strcmp(stopset, "</methodResponse>") == 0)
     {
         if (strstr((char*)rxbuffer, stopset))
         {

src/network.c

@@ -515,6 +515,7 @@ static int multicast_publisher_write_data(multicast_publisher_args
     return (RIG_OK);
 }
 
+#if 0 // disable until we figure out what to do about Windows poor performance
 static int multicast_publisher_read_data(multicast_publisher_args
         const *mcast_publisher_args, size_t length, unsigned char *data)
 {
@@ -557,6 +558,7 @@ static int multicast_publisher_read_data(multicast_publisher_args
 
     return (RIG_OK);
 }
+#endif
 
 #else
 
@@ -978,6 +980,7 @@ void *multicast_publisher(void *arg)
         }
         for(i=0;i<5;++i)
         {
+            hl_usleep(200*1000);
             if (rig->state.cache.freqMainA != freqA)
             {
                 freqA = rig->state.cache.freqMainA;
@@ -1033,7 +1036,6 @@ void *multicast_publisher(void *arg)
                 widthC = rig->state.cache.widthMainC;
                 break;
             }
-            hl_usleep(200*1000);
         }
 
     }