Fix ForceContextLogLevelAndTraceStatus handling in dlt_daemon_client.c (#50)

Even Forcing log level and trace status of context to not exceed "ContextLogLevel" and "ContextTraceStatus" in dlt.conf file with ForceContextLogLevelAndTraceStatus = 1, the default log level is being overwritten with high value than expected by client(DLT_Viewer when default trace data request is sent ) and by dlt-control application on usage of (dlt-control -d loglevel IP_ADDRESS)
With provided patch/changes in place, when ForceContextLogLevelAndTraceStatus  is enabled the requested log level is checked with ContextLogLevel and if it satisfied the daemon default loglevel gets updated.
Added a conditional checks to not to overwrite the individual contextLoglevel and ContextTracesStatus when ForceContextLogLevelAndTraceStatus is enabled in dlt.conf file and taken care of review comments.

1 files changed, 33 insertions, 4 deletions

diff --git a/src/daemon/dlt_daemon_client.c b/src/daemon/dlt_daemon_client.c
index a9d9440..48f38ad 100644
--- a/src/daemon/dlt_daemon_client.c
+++ b/src/daemon/dlt_daemon_client.c
@@ -82,6 +82,20 @@
 /** Global text output buffer, mainly used for creation of error/warning strings */
 static char str[DLT_DAEMON_TEXTBUFSIZE];
 
+/** Inline function to calculate/set the requested log level or traces status
+ *  with default log level or trace status when "ForceContextLogLevelAndTraceStatus"
+ *  is enabled and set to 1 in dlt.conf file.
+ *
+ * @param request_log The requested log level (or) trace status
+ * @param context_log The default log level (or) trace status
+ *
+ * @return The log level if requested log level is lower or equal to ContextLogLevel
+*/
+static inline int8_t getStatus(uint8_t request_log, int context_log)
+{
+    return (request_log <= context_log)? request_log : context_log;
+}
+
 /** @brief Sends up to 2 messages to all the clients.
  *
  * Runs through the client list and sends the messages to them. If the message
@@ -1633,6 +1647,8 @@ void dlt_daemon_control_set_log_level(int sock, DltDaemon *daemon, DltDaemonLoca
     }
 
     req = (DltServiceSetLogLevel*) (msg->databuffer);
+    if (daemon_local->flags.enforceContextLLAndTS)
+        req->log_level = getStatus(req->log_level, daemon_local->flags.contextLogLevel);
 
     dlt_set_id(apid, req->apid);
     dlt_set_id(ctid, req->ctid);
@@ -1703,7 +1719,10 @@ void dlt_daemon_control_set_trace_status(int sock, DltDaemon *daemon, DltDaemonL
     if (context!=0)
     {
         old_trace_status = context->trace_status;
-        context->trace_status = req->log_level;   /* No endianess conversion necessary */
+	if (daemon_local->flags.enforceContextLLAndTS)
+	    context->trace_status = getStatus(req->log_level, daemon_local->flags.contextTraceStatus);
+	else
+	    context->trace_status = req->log_level;   /* No endianess conversion necessary */
 
         if ((context->user_handle >= DLT_FD_MINIMUM ) &&
                 (dlt_daemon_user_send_log_level(daemon, context, verbose)==0))
@@ -1747,7 +1766,10 @@ void dlt_daemon_control_set_default_log_level(int sock, DltDaemon *daemon, DltDa
     if (/*(req->log_level>=0) &&*/
             (req->log_level<=DLT_LOG_VERBOSE))
     {
-        daemon->default_log_level = req->log_level; /* No endianess conversion necessary */
+        if (daemon_local->flags.enforceContextLLAndTS)
+	    daemon->default_log_level = getStatus(req->log_level, daemon_local->flags.contextLogLevel);
+	else
+	    daemon->default_log_level = req->log_level; /* No endianess conversion necessary */
 
         /* Send Update to all contexts using the default log level */
         dlt_daemon_user_send_default_update(daemon, verbose);
@@ -1783,7 +1805,11 @@ void dlt_daemon_control_set_all_log_level(int sock, DltDaemon *daemon, DltDaemon
     /* No endianess conversion necessary */
     if ((req != NULL) && (req->log_level <= DLT_LOG_VERBOSE))
     {
-        loglevel = req->log_level; /* No endianess conversion necessary */
+	if (daemon_local->flags.enforceContextLLAndTS)
+            loglevel = getStatus(req->log_level, daemon_local->flags.contextLogLevel);
+	else
+	    loglevel = req->log_level; /* No endianess conversion necessary */
+
         /* Send Update to all contexts using the new log level */
         dlt_daemon_user_send_all_update(daemon, loglevel, verbose);
 
@@ -1819,7 +1845,10 @@ void dlt_daemon_control_set_default_trace_status(int sock, DltDaemon *daemon, Dl
     if ((req->log_level==DLT_TRACE_STATUS_OFF) ||
             (req->log_level==DLT_TRACE_STATUS_ON))
     {
-        daemon->default_trace_status = req->log_level; /* No endianess conversion necessary*/
+        if (daemon_local->flags.enforceContextLLAndTS)
+	    daemon->default_trace_status = getStatus(req->log_level, daemon_local->flags.contextTraceStatus);
+    	else
+	    daemon->default_trace_status = req->log_level; /* No endianess conversion necessary*/
 
         /* Send Update to all contexts using the default trace status */
         dlt_daemon_user_send_default_update(daemon, verbose);