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/* ccidmon.c - CCID monitor for use with the Linux usbmon facility.
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* Copyright (C) 2009 Free Software Foundation, Inc.
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* This file is part of GnuPG.
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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/* This utility takes the output of usbmon, filters out the bulk data
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and prints the CCID messages in a human friendly way.
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#ifndef PACKAGE_VERSION
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# define PACKAGE_VERSION "[build on " __DATE__ " " __TIME__ "]"
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#ifndef PACKAGE_BUGREPORT
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# define PACKAGE_BUGREPORT "devnull@example.org"
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static int skip_escape;
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static int usb_bus, usb_dev;
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RDR_to_PC_NotifySlotChange= 0x50,
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RDR_to_PC_HardwareError = 0x51,
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PC_to_RDR_SetParameters = 0x61,
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PC_to_RDR_IccPowerOn = 0x62,
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PC_to_RDR_IccPowerOff = 0x63,
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PC_to_RDR_GetSlotStatus = 0x65,
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PC_to_RDR_Secure = 0x69,
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PC_to_RDR_T0APDU = 0x6a,
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PC_to_RDR_Escape = 0x6b,
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PC_to_RDR_GetParameters = 0x6c,
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PC_to_RDR_ResetParameters = 0x6d,
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PC_to_RDR_IccClock = 0x6e,
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PC_to_RDR_XfrBlock = 0x6f,
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PC_to_RDR_Mechanical = 0x71,
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PC_to_RDR_Abort = 0x72,
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PC_to_RDR_SetDataRate = 0x73,
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RDR_to_PC_DataBlock = 0x80,
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RDR_to_PC_SlotStatus = 0x81,
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RDR_to_PC_Parameters = 0x82,
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RDR_to_PC_Escape = 0x83,
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RDR_to_PC_DataRate = 0x84
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#define digitp(p) ((p) >= '0' && (p) <= '9')
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#define hexdigitp(a) (digitp (a) \
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|| ((a) >= 'A' && (a) <= 'F') \
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|| ((a) >= 'a' && (a) <= 'f'))
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#define ascii_isspace(a) ((a)==' ' || (a)=='\n' || (a)=='\r' || (a)=='\t')
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#define xtoi_1(p) ((p) <= '9'? ((p)- '0'): \
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(p) <= 'F'? ((p)-'A'+10):((p)-'a'+10))
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/* Print diagnostic message and exit with failure. */
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die (const char *format, ...)
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fprintf (stderr, "%s: ", PGM);
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va_start (arg_ptr, format);
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vfprintf (stderr, format, arg_ptr);
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/* Print diagnostic message. */
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err (const char *format, ...)
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fprintf (stderr, "%s: ", PGM);
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va_start (arg_ptr, format);
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vfprintf (stderr, format, arg_ptr);
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/* Convert a little endian stored 4 byte value into an unsigned
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convert_le_u32 (const unsigned char *buf)
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return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
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/* Convert a little endian stored 2 byte value into an unsigned
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convert_le_u16 (const unsigned char *buf)
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return buf[0] | (buf[1] << 8);
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print_pr_data (const unsigned char *data, size_t datalen, size_t off)
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for (; off < datalen; off++)
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if (!(off % 16) || first)
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printf (" [%04d] ", off);
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printf (" %02X", data[off]);
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print_p2r_header (const char *name, const unsigned char *msg, size_t msglen)
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printf ("%s:\n", name);
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printf (" dwLength ..........: %u\n", convert_le_u32 (msg+1));
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printf (" bSlot .............: %u\n", msg[5]);
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printf (" bSeq ..............: %u\n", msg[6]);
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print_p2r_iccpoweron (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_IccPowerOn", msg, msglen);
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printf (" bPowerSelect ......: 0x%02x (%s)\n", msg[7],
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msg[7] == 1? "5.0 V":
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msg[7] == 2? "3.0 V":
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msg[7] == 3? "1.8 V":"");
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print_pr_data (msg, msglen, 8);
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print_p2r_iccpoweroff (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_IccPowerOff", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_getslotstatus (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_GetSlotStatus", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_xfrblock (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_XfrBlock", msg, msglen);
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printf (" bBWI ..............: 0x%02x\n", msg[7]);
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val = convert_le_u16 (msg+8);
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printf (" wLevelParameter ...: 0x%04x%s\n", val,
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val == 1? " (continued)":
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val == 2? " (continues+ends)":
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val == 3? " (continues+continued)":
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val == 16? " (DataBlock-expected)":"");
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print_pr_data (msg, msglen, 10);
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print_p2r_getparameters (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_GetParameters", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_resetparameters (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_ResetParameters", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_setparameters (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_SetParameters", msg, msglen);
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printf (" bProtocolNum ......: 0x%02x\n", msg[7]);
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print_pr_data (msg, msglen, 8);
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print_p2r_escape (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_Escape", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_iccclock (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_IccClock", msg, msglen);
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printf (" bClockCommand .....: 0x%02x\n", msg[7]);
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print_pr_data (msg, msglen, 8);
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print_p2r_to0apdu (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_T0APDU", msg, msglen);
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printf (" bmChanges .........: 0x%02x\n", msg[7]);
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printf (" bClassGetResponse .: 0x%02x\n", msg[8]);
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printf (" bClassEnvelope ....: 0x%02x\n", msg[9]);
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print_pr_data (msg, msglen, 10);
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print_p2r_secure (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_Secure", msg, msglen);
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printf (" bBMI ..............: 0x%02x\n", msg[7]);
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val = convert_le_u16 (msg+8);
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printf (" wLevelParameter ...: 0x%04x%s\n", val,
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val == 1? " (continued)":
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val == 2? " (continues+ends)":
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val == 3? " (continues+continued)":
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val == 16? " (DataBlock-expected)":"");
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print_pr_data (msg, msglen, 10);
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print_p2r_mechanical (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_Mechanical", msg, msglen);
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printf (" bFunction .........: 0x%02x\n", msg[7]);
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print_pr_data (msg, msglen, 8);
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print_p2r_abort (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_Abort", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_setdatarate (const unsigned char *msg, size_t msglen)
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print_p2r_header ("PC_to_RDR_SetDataRate", msg, msglen);
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print_pr_data (msg, msglen, 7);
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print_p2r_unknown (const unsigned char *msg, size_t msglen)
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print_p2r_header ("Unknown PC_to_RDR command", msg, msglen);
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print_pr_data (msg, msglen, 0);
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print_p2r (const unsigned char *msg, size_t msglen)
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switch (msglen? msg[0]:0)
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case PC_to_RDR_IccPowerOn:
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print_p2r_iccpoweron (msg, msglen);
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case PC_to_RDR_IccPowerOff:
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print_p2r_iccpoweroff (msg, msglen);
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case PC_to_RDR_GetSlotStatus:
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print_p2r_getslotstatus (msg, msglen);
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case PC_to_RDR_XfrBlock:
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print_p2r_xfrblock (msg, msglen);
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case PC_to_RDR_GetParameters:
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print_p2r_getparameters (msg, msglen);
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case PC_to_RDR_ResetParameters:
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print_p2r_resetparameters (msg, msglen);
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case PC_to_RDR_SetParameters:
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print_p2r_setparameters (msg, msglen);
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case PC_to_RDR_Escape:
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print_p2r_escape (msg, msglen);
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case PC_to_RDR_IccClock:
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print_p2r_iccclock (msg, msglen);
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case PC_to_RDR_T0APDU:
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print_p2r_to0apdu (msg, msglen);
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case PC_to_RDR_Secure:
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print_p2r_secure (msg, msglen);
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case PC_to_RDR_Mechanical:
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print_p2r_mechanical (msg, msglen);
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case PC_to_RDR_Abort:
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print_p2r_abort (msg, msglen);
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case PC_to_RDR_SetDataRate:
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print_p2r_setdatarate (msg, msglen);
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print_p2r_unknown (msg, msglen);
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print_r2p_header (const char *name, const unsigned char *msg, size_t msglen)
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printf ("%s:\n", name);
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printf (" dwLength ..........: %u\n", convert_le_u32 (msg+1));
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printf (" bSlot .............: %u\n", msg[5]);
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printf (" bSeq ..............: %u\n", msg[6]);
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printf (" bStatus ...........: %u\n", msg[7]);
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printf (" bError ............: %u\n", msg[8]);
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print_r2p_datablock (const unsigned char *msg, size_t msglen)
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print_r2p_header ("RDR_to_PC_DataBlock", msg, msglen);
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printf (" bChainParameter ...: 0x%02x%s\n", msg[9],
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msg[9] == 1? " (continued)":
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msg[9] == 2? " (continues+ends)":
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msg[9] == 3? " (continues+continued)":
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msg[9] == 16? " (XferBlock-expected)":"");
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print_pr_data (msg, msglen, 10);
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print_r2p_slotstatus (const unsigned char *msg, size_t msglen)
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print_r2p_header ("RDR_to_PC_SlotStatus", msg, msglen);
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printf (" bClockStatus ......: 0x%02x%s\n", msg[9],
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msg[9] == 0? " (running)":
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msg[9] == 1? " (stopped-L)":
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msg[9] == 2? " (stopped-H)":
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msg[9] == 3? " (stopped)":"");
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print_pr_data (msg, msglen, 10);
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print_r2p_parameters (const unsigned char *msg, size_t msglen)
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print_r2p_header ("RDR_to_PC_Parameters", msg, msglen);
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printf (" protocol ..........: T=%d\n", msg[9]);
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if (msglen == 17 && msg[9] == 1)
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printf (" bmFindexDindex ....: %02X\n", msg[10]);
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printf (" bmTCCKST1 .........: %02X\n", msg[11]);
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printf (" bGuardTimeT1 ......: %02X\n", msg[12]);
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printf (" bmWaitingIntegersT1: %02X\n", msg[13]);
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printf (" bClockStop ........: %02X\n", msg[14]);
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printf (" bIFSC .............: %d\n", msg[15]);
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printf (" bNadValue .........: %d\n", msg[16]);
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print_pr_data (msg, msglen, 10);
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print_r2p_escape (const unsigned char *msg, size_t msglen)
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print_r2p_header ("RDR_to_PC_Escape", msg, msglen);
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printf (" buffer[9] .........: %02X\n", msg[9]);
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print_pr_data (msg, msglen, 10);
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print_r2p_datarate (const unsigned char *msg, size_t msglen)
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print_r2p_header ("RDR_to_PC_DataRate", msg, msglen);
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printf (" dwClockFrequency ..: %u\n", convert_le_u32 (msg+10));
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printf (" dwDataRate ..... ..: %u\n", convert_le_u32 (msg+14));
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print_pr_data (msg, msglen, 18);
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print_pr_data (msg, msglen, 10);
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print_r2p_unknown (const unsigned char *msg, size_t msglen)
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print_r2p_header ("Unknown RDR_to_PC command", msg, msglen);
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printf (" bMessageType ......: %02X\n", msg[0]);
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printf (" buffer[9] .........: %02X\n", msg[9]);
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print_pr_data (msg, msglen, 10);
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print_r2p (const unsigned char *msg, size_t msglen)
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switch (msglen? msg[0]:0)
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case RDR_to_PC_DataBlock:
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print_r2p_datablock (msg, msglen);
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case RDR_to_PC_SlotStatus:
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print_r2p_slotstatus (msg, msglen);
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case RDR_to_PC_Parameters:
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print_r2p_parameters (msg, msglen);
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case RDR_to_PC_Escape:
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print_r2p_escape (msg, msglen);
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case RDR_to_PC_DataRate:
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print_r2p_datarate (msg, msglen);
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print_r2p_unknown (msg, msglen);
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if (!databuffer.count)
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printf ("Address: %s\n", databuffer.address);
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if (databuffer.is_bi)
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print_r2p (databuffer.data, databuffer.count);
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print_p2r (databuffer.data, databuffer.count);
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databuffer.count = 0;
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collect_data (char *hexdata, const char *address, unsigned int lineno)
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is_bi = (*address && address[1] == 'i');
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if (databuffer.is_bi != is_bi || strcmp (databuffer.address, address))
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databuffer.is_bi = is_bi;
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if (strlen (address) >= sizeof databuffer.address)
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die ("address field too long");
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strcpy (databuffer.address, address);
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length = databuffer.count;
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for (s=hexdata; *s; s++ )
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if (ascii_isspace (*s))
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err ("invalid hex digit in line %u - line skipped", lineno);
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value = xtoi_1 (*s) * 16;
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err ("invalid hex digit in line %u - line skipped", lineno);
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value += xtoi_1 (*s);
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if (length >= sizeof (databuffer.data))
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err ("too much data at line %u - can handle only up to % bytes",
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lineno, sizeof (databuffer.data));
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databuffer.data[length++] = value;
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databuffer.count = length;
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parse_line (char *line, unsigned int lineno)
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char *event_type, *address, *data, *status, *datatag;
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printf ("line[%u] =`%s'\n", lineno, line);
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p = strtok (line, " ");
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die ("invalid line %d (no URB)");
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p = strtok (NULL, " ");
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die ("invalid line %d (no timestamp)");
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event_type = strtok (NULL, " ");
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die ("invalid line %d (no event type)");
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address = strtok (NULL, " ");
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die ("invalid line %d (no address");
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if (usb_bus || usb_dev)
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p = strchr (address, ':');
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die ("invalid line %d (invalid address");
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die ("invalid line %d (invalid address");
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if ((usb_bus && usb_bus != bus) || (usb_dev && usb_dev != dev))
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return; /* We don't want that one. */
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if (*address != 'B' || (address[1] != 'o' && address[1] != 'i'))
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return; /* We only want block in and block out. */
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status = strtok (NULL, " ");
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if (!strchr ("-0123456789", *status))
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return; /* Setup packet. */
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/* We don't support "Z[io]" types thus we don't need to check here. */
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p = strtok (NULL, " ");
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return; /* No data length. */
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datatag = strtok (NULL, " ");
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if (datatag && *datatag == '=')
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data = strtok (NULL, "");
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collect_data (data?data:"", address, lineno);
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parse_input (FILE *fp)
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unsigned int lineno = 0;
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while (fgets (line, sizeof (line), fp))
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length = strlen (line);
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if (length && line[length - 1] == '\n')
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err ("line number %u too long or last line not terminated", lineno);
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if (length && line[length - 1] == '\r')
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parse_line (line, lineno);
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err ("error reading input at line %u: %s", lineno, strerror (errno));
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main (int argc, char **argv)
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while (argc && last_argc != argc )
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if (!strcmp (*argv, "--"))
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else if (!strcmp (*argv, "--version"))
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fputs (PGM " (GnuPG) " PACKAGE_VERSION "\n", stdout);
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else if (!strcmp (*argv, "--help"))
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puts ("Usage: " PGM " [BUS:DEV]\n"
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"Parse the output of usbmod assuming it is CCID compliant.\n\n"
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" --skip-escape do not show escape packets\n"
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" --verbose enable extra informational output\n"
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" --debug enable additional debug output\n"
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" --help display this help and exit\n\n"
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"Report bugs to " PACKAGE_BUGREPORT ".");
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else if (!strcmp (*argv, "--verbose"))
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else if (!strcmp (*argv, "--debug"))
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else if (!strcmp (*argv, "--skip-escape"))
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die ("usage: " PGM " [BUS:DEV] (try --help for more information)\n");
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const char *s = strchr (argv[0], ':');
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usb_bus = atoi (argv[0]);
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usb_dev = atoi (s+1);
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if (usb_bus < 1 || usb_bus > 999 || usb_dev < 1 || usb_dev > 999)
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die ("invalid bus:dev specified");
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signal (SIGPIPE, SIG_IGN);
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return any_error? 1:0;
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compile-command: "gcc -Wall -Wno-pointer-sign -g -o ccidmon ccidmon.c"
added
removed
tools/ccidmon.c
