From f6f80f260a8c088021653b30333beb94104bf87f Mon Sep 17 00:00:00 2001
From: zorgluf <zorgluf@gmail.com>
Date: Mon, 19 Jul 2021 14:24:05 +0200
Subject: [PATCH] Smartcard MAX_READERS get from pcsclite package

---
 configure.ac                    |  8 ++++++++
 sesman/chansrv/Makefile.am      |  1 +
 sesman/chansrv/smartcard_pcsc.c | 14 ++++++--------
 3 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/configure.ac b/configure.ac
index 0081ff4953..4794530013 100644
--- a/configure.ac
+++ b/configure.ac
@@ -373,6 +373,14 @@ else
 fi
 fi
 
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -I/usr/include/PCSC"
+# checking for pcsclite headers
+AC_CHECK_HEADER([PCSC/pcsclite.h], [],
+  [AC_MSG_ERROR([please install libpcsclite-dev or pcsc-lite-dev])])
+
+CFLAGS="$save_CFLAGS"
+
 AC_PATH_XTRA
 if test "x$no_x" == "xyes"; then
   AC_MSG_ERROR([please install libx11-dev or libX11-devel])
diff --git a/sesman/chansrv/Makefile.am b/sesman/chansrv/Makefile.am
index 4f74912c48..8e97e32d58 100644
--- a/sesman/chansrv/Makefile.am
+++ b/sesman/chansrv/Makefile.am
@@ -9,6 +9,7 @@ AM_CPPFLAGS = \
   -DXRDP_SHARE_PATH=\"${datadir}/xrdp\" \
   -DXRDP_PID_PATH=\"${localstatedir}/run\" \
   -DXRDP_SOCKET_PATH=\"${socketdir}\" \
+  -I/usr/include/PCSC \
   -I$(top_srcdir)/common
 
 CHANSRV_EXTRA_LIBS =
diff --git a/sesman/chansrv/smartcard_pcsc.c b/sesman/chansrv/smartcard_pcsc.c
index f294530d66..fb164645de 100644
--- a/sesman/chansrv/smartcard_pcsc.c
+++ b/sesman/chansrv/smartcard_pcsc.c
@@ -43,13 +43,11 @@
 #include "list.h"
 #include "defines.h"
 #include "xrdp_sockets.h"
+#include "PCSC/pcsclite.h"
 
 #if PCSC_STANDIN
 
 
-#define MAX_ATR_SIZE 33
-#define MAX_READERS 32
-
 extern int g_display_num; /* in chansrv.c */
 
 static int g_autoinc = 0; /* general purpose autoinc */
@@ -93,9 +91,9 @@ struct pcsc_uds_client
     int state;
     int pad1;
 
-    PCSC_READER_STATE readerStates[MAX_READERS];
-    tui32 current_states[MAX_READERS];
-    tui32 event_states[MAX_READERS];
+    PCSC_READER_STATE readerStates[PCSCLITE_MAX_READERS_CONTEXTS];
+    tui32 current_states[PCSCLITE_MAX_READERS_CONTEXTS];
+    tui32 event_states[PCSCLITE_MAX_READERS_CONTEXTS];
     int numReaders;
     int waiting;
     int something_changed;
@@ -748,7 +746,7 @@ scard_readers_to_list(struct pcsc_uds_client *uds_client,
             }
             reader_index++; 
             hold_reader = uds_client->readerStates[reader_index];
-            if (reader_index > (MAX_READERS - 1))
+            if (reader_index > (PCSCLITE_MAX_READERS_CONTEXTS - 1))
             {
                 return 0;
             }
@@ -763,7 +761,7 @@ scard_readers_to_list(struct pcsc_uds_client *uds_client,
     }
     uds_client->numReaders = reader_index;
     /* clear the rest */
-    while (reader_index < MAX_READERS)
+    while (reader_index < PCSCLITE_MAX_READERS_CONTEXTS)
     {
         g_memset(uds_client->readerStates + reader_index, 0, sizeof(PCSC_READER_STATE));
         uds_client->current_states[reader_index] = 0;