various improvements

- use dig for resolving host names
- ascon.c: fix terminator parsing
- property callback: change property before callback
- logger.c:default for logger period must be the old value instead of 1
- add frappy type history writing
- increase max. logreader line length
- HIPNONE returns "null" with json protocol
- encode strings properly in formatNameValue
- fix memory leak in json2tcl
- scriptcontext: do not show debug messages when script starts with underscore or when the "send" property is empty
- scriptcontext: remove args for action timestamp
- scriptcontext: "que" function will replace an already queued action, e.g. for 'halt
- introduced updatestatus script

protocol.c

@@ -469,10 +469,11 @@ struct json_object *mkJSON_Object(SConnection * pCon, char *pBuffer,
   char pError[256];
   pError[0] = '\0';
 
-
+  /*
   if (strlen(pBuffer) == 0) {
     return 0;
   }
+  */
 
   if (!SCVerifyConnection(pCon)) {
     return 0;
@@ -518,9 +519,14 @@ struct json_object *mkJSON_Object(SConnection * pCon, char *pBuffer,
   }
   if (iOut == eHdbValue || iOut == eHdbEvent) {
     tmp_json = json_tokener_parse(pBuffer);
-    if (tmp_json == NULL) {
-      linenum = __LINE__;
-      goto reporterr;
+    if (strcmp(pBuffer, "null") != 0) {
+      if (tmp_json == NULL) {
+        tmp_json = json_object_new_string(pBuffer);
+      }
+      if (tmp_json == NULL) {
+        linenum = __LINE__;
+        goto reporterr;
+      }
     }
   } else {
     /* Strip \r and \n */
@@ -561,9 +567,11 @@ int SCWriteJSON_String(SConnection * pCon, char *pBuffer, int iOut)
   char pBueffel[MAXMSG], errBuff[MAXMSG];
   int iRet, errLen = MAXMSG;
 
+  /*
   if (strlen(pBuffer) == 0)
     return 1;
-
+  */
+  
   /* log it for any case */
   iRet = SCGetSockHandle(pCon);