From 5ce38abd367f812d4e07ae71e1e5cdfcb8584f8d Mon Sep 17 00:00:00 2001
From: Christina Quast <chrysh.ng+git@gmail.com>
Date: Tue, 10 Mar 2015 15:16:13 +0100
Subject: [PATCH] Moved code for select file cmd into function

The select command mostly works when the blue sysmocom SIM card is inserted,
but with the white SuperSIM we always get timeouts and invalid answers.
Furthermore the white card takes much longer to answer the requests than the
blue one.
So probably there is a timing issue.

Currently this is the simtrace output for select and reading IMSI, etc:
(pcscd must be running as welil, otherwise we get:
$ ./simtrace.py -S
Exception: Failed to establish context : Service not available.)

$ ./simtrace.py -S
Context established!
PCSC Readers: ['ATMEL AT91SO CCID Smart Card Reader [SIMtraceCCID] 00 00']
Using reader: ATMEL AT91SO CCID Smart Card Reader [SIMtraceCCID] 00 00
Connected with active protocol 1
Select: 0x6E 0x00
Command: 0x6D 0x00
Disconnected
Released context.
==> Expected answer for Select: 0x6D 0x00
(based on trying to execute this command with gemalto usb smart card reader)
The command works only every now and then

$ ./simtrace.py -b
pcsc: wait_for_card
Reading ...
Traceback (most recent call last):
  File "./simtrace.py", line 105, in <module>
    main()
  File "./simtrace.py", line 66, in main
    ccid.pySim_read()
  File "/home/chrysh/ba_thesis/sysmocom_repo/usb_application/ccid.py", line 22, in pySim_read
    (res, sw) = scc.read_binary(['3f00', '2fe2'])
  File "/home/chrysh/code/src/pysim/pySim/commands.py", line 42, in read_binary
    r = self.select_file(ef)
  File "/home/chrysh/code/src/pysim/pySim/commands.py", line 35, in select_file
    data, sw = self._tp.send_apdu_checksw("a0a4000002" + i)
  File "/home/chrysh/code/src/pysim/pySim/transport/__init__.py", line 87, in send_apdu_checksw
    raise RuntimeError("SW match failed ! Expected %s and got %s." % (sw.lower(), rv[1]))
RuntimeError: SW match failed ! Expected 9000 and got 9404.
==> Error code 9404 does not exist, which suggests that we actually have a timing issue when
communicating with the smart cart
---
 sam3s_example/simtrace/ccid.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/sam3s_example/simtrace/ccid.c b/sam3s_example/simtrace/ccid.c
index 671fd4f2..f17cfeae 100644
--- a/sam3s_example/simtrace/ccid.c
+++ b/sam3s_example/simtrace/ccid.c
@@ -180,6 +180,28 @@ void CCID_init( void )
     }
 }
 
+/* FIXME: Remove this testcode */
+void send_select_file() {
+    #define MAX_ANSWER_SIZE         10
+    static const uint8_t testCommand4[] = {0x00, 0xa4, 0x00, 0x00, 0x02, 0x3f, 0x00};
+    uint8_t pMessage[MAX_ANSWER_SIZE];
+    uint8_t ucSize ;
+    int i;
+
+    printf("Write msg\n\r");
+    ucSize = ISO7816_XfrBlockTPDU_T0( testCommand4, pMessage, sizeof( testCommand4 ) ) ;
+        //  Output smartcard answer
+    if ( ucSize > 0 )
+    {
+        printf( "\n\rAnswer: " ) ;
+        for ( i=0 ; i < ucSize ; i++ )
+        {
+            printf( "0x%02X ", pMessage[i] ) ;
+        }
+        printf( "\n\r" ) ;
+    }
+}
+
 void CCID_run( void )
 {