From 13f97cbc84c5fcc92cc7a82e79ddcb84d85c61ff Mon Sep 17 00:00:00 2001
From: Ulrich Sibiller <uli42@gmx.de>
Date: Sun, 16 Feb 2020 00:01:38 +0100
Subject: Client.c: add clientInfoString to client privates

This is a string that contains the address, the index, the PID and the
process name of the client. The string can be used in debugging
messages to identify the client.
---
 nx-X11/programs/Xserver/hw/nxagent/Client.c | 47 +++++++++++++++++++++++++++++
 nx-X11/programs/Xserver/hw/nxagent/Client.h |  5 ++-
 2 files changed, 51 insertions(+), 1 deletion(-)

(limited to 'nx-X11/programs/Xserver/hw/nxagent')

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Client.c b/nx-X11/programs/Xserver/hw/nxagent/Client.c
index 9b0f2c5e6..83554e573 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Client.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Client.c
@@ -112,6 +112,14 @@ int nxagentClientPrivateIndex;
 
 int nxagentShadowCounter = 0;
 
+/*
+ * For the serverclient the ClientStateCallback will not be called on
+ * shutdown resulting in memory allocated during initClientPrivates can
+ * not be freed automatically. So instead of allocating some memory we
+ * create a static string for the serverclient.
+ */
+static char *serverclientInfoString = "[0] (serverclient)";
+
 /*
  * called whenever the client state changes. See dixstruct.h for a
  * list of known states.
@@ -182,6 +190,42 @@ static void initClientPrivates(ClientPtr client)
     nxagentClientPriv(client) -> clientBytes = 0;
 #endif
     nxagentClientPriv(client) -> clientHint  = UNKNOWN;
+    nxagentClientPriv(client) -> clientInfoString = NULL;
+
+    char *s = NULL;
+    int size = 0;
+
+    if (client->index == 0)
+    {
+      s = serverclientInfoString;
+    }
+    else
+    {
+#ifdef CLIENTIDS
+      size = asprintf(&s, "[%d] (addr [%p] PID [%d] Cmd [%s])",
+                          client->index, (void *)client,
+                              GetClientPid(client),
+                                  GetClientCmdName(client));
+#else
+      size = asprintf(&s, "[%d] (addr [%p])",
+                          client->index, (void *)client);
+#endif
+    }
+
+    if (size != -1)
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "%s: clientInfoString: \"%s\"\n", __func__, s);
+      #endif
+
+      nxagentClientPriv(client) -> clientInfoString = s;
+    }
+    else
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "%s: could not alloc clientInfoString\n", __func__);
+      #endif
+    }
   }
 }
 
@@ -198,6 +242,9 @@ static void freeClientPrivates(ClientPtr client)
     nxagentClientPriv(client) -> clientBytes = 0;
 #endif
     nxagentClientPriv(client) -> clientHint  = UNKNOWN;
+
+    if (client->index != 0)
+      SAFE_free(nxagentClientPriv(client) -> clientInfoString);
   }
 }
 
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Client.h b/nx-X11/programs/Xserver/hw/nxagent/Client.h
index 38a02aed1..a3e6e3cf3 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Client.h
+++ b/nx-X11/programs/Xserver/hw/nxagent/Client.h
@@ -49,7 +49,7 @@ typedef struct _PrivClientRec
   int clientState;
   long clientBytes;
   enum ClientHint clientHint;
-
+  char *clientInfoString;
 } PrivClientRec;
 
 extern int nxagentClientPrivateIndex;
@@ -75,6 +75,9 @@ extern void nxagentClientStateCallback(CallbackListPtr *callbacks, void *data, v
 #define nxagentClientIsDialog(pClient) \
     (nxagentClientHint(pClient) == NXCLIENT_DIALOG)
 
+#define nxagentClientInfoString(pClient)	\
+    (nxagentClientPriv(pClient) -> clientInfoString)
+
 /*
  * The actual reason why the client is sleeping.
  */
-- 
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