From 3c9ee1ff7bc78d91b28eb52f8d15b4f3bf514be1 Mon Sep 17 00:00:00 2001
From: Ulrich Sibiller <uli42@gmx.de>
Date: Wed, 8 May 2019 23:21:30 +0200
Subject: nxagent: Determine nxagentProgName only once

also add TEST prints, init nxagentProgName with NULL and add const
where it was missing.

Fixes ArcticaProject/nx-libs#803
---
 nx-X11/programs/Xserver/hw/nxagent/Args.c | 28 +++++++++++++++++++++-------
 nx-X11/programs/Xserver/hw/nxagent/Init.c |  7 ++++++-
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Args.c b/nx-X11/programs/Xserver/hw/nxagent/Args.c
index 949892f25..607dab9bf 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Args.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Args.c
@@ -126,7 +126,7 @@ extern int _XGetBitsPerPixel(Display *dpy, int depth);
 
 extern char dispatchExceptionAtReset;
 
-char *nxagentProgName;
+const char *nxagentProgName = NULL;
 
 char nxagentDisplayName[NXAGENTDISPLAYNAMELENGTH];
 Bool nxagentSynchronize = False;
@@ -186,17 +186,31 @@ char *nxagentKeystrokeFile = NULL;
 int ddxProcessArgument(int argc, char *argv[], int i)
 {
   /*
-   * Ensure that the options are set to their defaults.
+   * The flavour can never change, so only set it once.
+   *
+   * FIXME: ddxProcessArgument() is called once for every command line
+   * argument, with argv[0] being the argument and not the program
+   * name! We should move this check somewhere else.
    */
+  if (nxagentProgName == NULL)
+  {
+    char *basec = strdup(argv[0]);
+    nxagentProgName = strdup(basename(basec));
+    free(basec);
 
-  char *basec = strdup(argv[0]);
-  nxagentProgName = strdup(basename(basec));
-  free(basec);
+    /*
+     * Check if we are running as X2Go Agent
+     */
+    checkX2goAgent();
+  }
+
+  #ifdef TEST
+  fprintf(stderr, "%s: argv[0] [%s]  nxagentProgName [%s]\n", __func__, argv[0], nxagentProgName);
+  #endif
 
   /*
-   * Check if we running as X2Go Agent
+   * Ensure that the options are set to their defaults.
    */
-  checkX2goAgent();
 
   static Bool resetOptions = True;
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Init.c b/nx-X11/programs/Xserver/hw/nxagent/Init.c
index d95c4b70f..d02af3f8d 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Init.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Init.c
@@ -194,7 +194,12 @@ int nxagentX2go;
 
 void checkX2goAgent(void)
 {
-  extern char *nxagentProgName;
+  extern const char *nxagentProgName;
+
+  #ifdef TEST
+  fprintf(stderr, "%s: nxagentProgName [%s]\n", __func__, nxagentProgName);
+  #endif
+
   if( strcasecmp(nxagentProgName,"x2goagent") == 0)
   {
     fprintf(stderr, "\nrunning as X2Go Agent\n");
-- 
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