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0ef89c02ab
xrdp/sesman/chansrv/smartcard.c
Laxmikant Rashinkar 0ef89c02ab scard: changed the way we store and pass context
2013-09-15 15:20:16 -07:00

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Laxmikant Rashinkar 2013 LK.Rashinkar@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/*
* smartcard redirection support
*/
#include <string.h>
#include "os_calls.h"
#include "smartcard.h"
#include "log.h"
#include "irp.h"
#include "devredir.h"
#include "smartcard_pcsc.h"
/*
* TODO
*
* o need to query client for build number and determine whether we should use
* SCREDIR_VERSION_XP or SCREDIR_VERSION_LONGHORN
*
* o need to call scard_release_resources()
*
* o why is win 7 sending SCARD_IOCTL_ACCESS_STARTED_EVENT first
* 0000 00 01 00 00 04 00 00 00 e0 00 09 00 00 00 00 00 ................
* 0010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
* 0020 28 b7 9d 02
*/
/*
* Notes:
*
* XP and Server 2003 use version SCREDIR_VERSION_XP functions 5 - 58
* Vista and Server 2008 use version SCREDIR_VERSION_LONGHORN functions 5 - 64
* if TS Client's build number is >= 4,034 use SCREDIR_VERSION_LONGHORN
*/
/* module based logging */
#define LOG_ERROR 0
#define LOG_INFO 1
#define LOG_DEBUG 2
#ifndef LOG_LEVEL
#define LOG_LEVEL LOG_DEBUG
#endif
#define log_error(_params...) \
do \
{ \
g_write("[%10.10u]: SMART_CARD %s: %d : ERROR: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} while (0)
#define log_info(_params...) \
do \
{ \
if (LOG_INFO <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: SMART_CARD %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
} while (0)
#define log_debug(_params...) \
do \
{ \
if (LOG_DEBUG <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: SMART_CARD %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
} while (0)
/* [MS-RDPESC] 3.1.4 */
#define SCARD_IOCTL_ESTABLISH_CONTEXT 0x00090014 /* EstablishContext */
#define SCARD_IOCTL_RELEASE_CONTEXT 0x00090018 /* ReleaseContext */
#define SCARD_IOCTL_IS_VALID_CONTEXT 0x0009001C /* IsValidContext */
#define SCARD_IOCTL_LIST_READER_GROUPS 0x00090020 /* ListReaderGroups */
#define SCARD_IOCTL_LIST_READERS_A 0x00090028 /* ListReaders ASCII */
#define SCARD_IOCTL_LIST_READERS_W 0x0009002C /* ListReaders Wide */
#define SCARD_IOCTL_INTRODUCE_READER_GROUP 0x00090050 /* IntroduceReaderGroup */
#define SCARD_IOCTL_FORGET_READER_GROUP 0x00090058 /* ForgetReader */
#define SCARD_IOCTL_INTRODUCE_READER 0x00090060 /* IntroduceReader */
#define SCARD_IOCTL_FORGET_READER 0x00090068 /* IntroduceReader */
#define SCARD_IOCTL_ADD_READER_TO_GROUP 0x00090070 /* AddReaderToGroup */
#define SCARD_IOCTL_REMOVE_READER_FROM_GROUP 0x00090078 /* RemoveReaderFromGroup */
#define SCARD_IOCTL_GET_STATUS_CHANGE_A 0x000900A0 /* GetStatusChangeA */
#define SCARD_IOCTL_GET_STATUS_CHANGE_W 0x000900A4 /* GetStatusChangeW */
#define SCARD_IOCTL_CANCEL 0x000900A8 /* Cancel */
#define SCARD_IOCTL_CONNECT_A 0x000900AC /* ConnectA */
#define SCARD_IOCTL_CONNECT_W 0x000900B0 /* ConnectW */
#define SCARD_IOCTL_RECONNECT 0x000900B4 /* Reconnect */
#define SCARD_IOCTL_DISCONNECT 0x000900B8 /* Disconnect */
#define SCARD_IOCTL_BEGIN_TRANSACTION 0x000900BC /* BeginTransaction */
#define SCARD_IOCTL_END_TRANSACTION 0x000900C0 /* EndTransaction */
#define SCARD_IOCTL_STATE 0x000900C4 /* State */
#define SCARD_IOCTL_STATUS_A 0x000900C8 /* StatusA */
#define SCARD_IOCTL_STATUS_W 0x000900CC /* StatusW */
#define SCARD_IOCTL_TRANSMIT 0x000900D0 /* Transmit */
#define SCARD_IOCTL_CONTROL 0x000900D4 /* Control */
#define SCARD_IOCTL_GETATTRIB 0x000900D8 /* GetAttrib */
#define SCARD_IOCTL_SETATTRIB 0x000900DC /* SetAttrib */
#define SCARD_IOCTL_ACCESS_STARTED_EVENT 0x000900E0 /* SCardAccessStartedEvent */
#define SCARD_IOCTL_LOCATE_CARDS_BY_ATR 0x000900E8 /* LocateCardsByATR */
/* scope used in EstablishContextCall */
#define SCARD_SCOPE_USER 0x00000000
#define SCARD_SCOPE_TERMINAL 0x00000001
#define SCARD_SCOPE_SYSTEM 0x00000002
/* disposition - action to take on card */
#define SCARD_LEAVE_CARD 0x00000000
#define SCARD_RESET_CARD 0x00000001
#define SCARD_UNPOWER_CARD 0x00000002
#define SCARD_EJECT_CARD 0x00000003
#define MAX_SMARTCARDS 16
/* stores info about a smart card */
typedef struct smartcard
{
tui32 DeviceId;
} SMARTCARD;
/* globals */
SMARTCARD* smartcards[MAX_SMARTCARDS];
int g_smartcards_inited = 0;
static tui32 g_device_id = 0;
static int g_scard_index = 0;
/* externs */
extern tui32 g_completion_id;
extern int g_rdpdr_chan_id; /* in chansrv.c */
/******************************************************************************
** static functions local to this file **
******************************************************************************/
static struct stream *scard_make_new_ioctl(IRP *irp, tui32 ioctl);
static int scard_add_new_device(tui32 device_id);
static int scard_get_free_slot(void);
static void scard_release_resources(void);
static void scard_send_EstablishContext(IRP* irp, int scope);
static void scard_send_ReleaseContext(IRP* irp, tui32 context);
static void scard_send_ListReaders(IRP* irp, tui32 context, int wide);
static void scard_send_GetStatusChange(IRP* irp, tui32 context, int wide,
tui32 timeout, tui32 num_readers,
READER_STATE* rsa);
static void scard_send_Connect(IRP* irp, tui32 context, int wide,
READER_STATE* rs);
static void scard_send_BeginTransaction(IRP* irp, tui32 sc_handle);
static void scard_send_EndTransaction(IRP* irp, tui32 sc_handle);
static void scard_send_Status(IRP* irp, int wide, tui32 sc_handle);
static void scard_send_Disconnect(IRP* irp, tui32 context, tui32 sc_handle);
/******************************************************************************
** local callbacks into this module **
******************************************************************************/
static void scard_handle_EstablishContext_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_ReleaseContext_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_ListReaders_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_GetStatusChange_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_Connect_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_BeginTransaction_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_EndTransaction_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_Status_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
static void scard_handle_Disconnect_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus);
/******************************************************************************
** **
** externally accessible functions, defined in smartcard.h **
** **
******************************************************************************/
/**
*****************************************************************************/
void APP_CC
scard_device_announce(tui32 device_id)
{
log_debug("entered: device_id=%d", device_id);
if (g_smartcards_inited)
return;
g_memset(&smartcards, 0, sizeof(smartcards));
g_smartcards_inited = 1;
g_device_id = device_id;
g_scard_index = scard_add_new_device(device_id);
if (g_scard_index < 0)
log_debug("scard_add_new_device failed with DeviceId=%d", g_device_id);
else
log_debug("added smartcard with DeviceId=%d to list", g_device_id);
}
/**
*
*****************************************************************************/
int APP_CC
scard_get_wait_objs(tbus *objs, int *count, int *timeout)
{
return scard_pcsc_get_wait_objs(objs, count, timeout);
}
/**
*
*****************************************************************************/
int APP_CC
scard_check_wait_objs(void)
{
return scard_pcsc_check_wait_objs();
}
/**
*
*****************************************************************************/
int APP_CC
scard_init(void)
{
log_debug("init");
return scard_pcsc_init();
}
/**
*
*****************************************************************************/
int APP_CC
scard_deinit(void)
{
log_debug("deinit");
return scard_pcsc_deinit();
}
/**
*
*****************************************************************************/
int APP_CC
scard_send_irp_establish_context(struct trans *con, int scope)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_EstablishContext_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_EstablishContext(irp, scope);
return 0;
}
/**
* Release a previously established Smart Card context
*****************************************************************************/
int
APP_CC scard_send_release_context(struct trans *con, tui32 context)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_ReleaseContext_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_ReleaseContext(irp, context);
return 0;
}
/**
*
*****************************************************************************/
int APP_CC
scard_send_irp_list_readers(struct trans *con, tui32 context, int wide)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_ListReaders_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_ListReaders(irp, context, wide);
return 0;
}
/**
* Send get change in status command
*
* @param con connection to client
* @param wide TRUE if unicode string
* @param timeout timeout in milliseconds, -1 for infinity
* @param num_readers number of entries in rsa
* @param rsa array of READER_STATEs
*****************************************************************************/
int APP_CC
scard_send_irp_get_status_change(struct trans *con, tui32 context, int wide,
tui32 timeout, tui32 num_readers,
READER_STATE* rsa)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_GetStatusChange_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_GetStatusChange(irp, context, wide, timeout, num_readers, rsa);
return 0;
}
/**
* Open a connection to the smart card located in the reader
*
* @param con connection to client
* @param wide TRUE if unicode string
*****************************************************************************/
int APP_CC
scard_send_irp_connect(struct trans *con, tui32 context, int wide,
READER_STATE* rs)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_Connect_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_Connect(irp, context, wide, rs);
return 0;
}
/**
* Lock smart card reader for exclusive access for specified smart
* card reader handle.
*
* @param con connection to client
*****************************************************************************/
int
APP_CC scard_send_begin_transaction(struct trans *con, tui32 sc_handle)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_BeginTransaction_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_BeginTransaction(irp, sc_handle);
return 0;
}
/**
* Release a smart card reader after being locked by a previously
* successful call to Begin Transaction
*
* @param con connection to client
* @param sc_handle handle to smartcard
*****************************************************************************/
int
APP_CC scard_send_end_transaction(struct trans *con, tui32 sc_handle)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_EndTransaction_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_EndTransaction(irp, sc_handle);
return 0;
}
/**
* Get the status of a connection for a valid smart card reader handle
*
* @param con connection to client
* @param wide TRUE if unicode string
*****************************************************************************/
int
APP_CC scard_send_status(struct trans *con, int wide, tui32 sc_handle)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_Status_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_Status(irp, wide, sc_handle);
return 0;
}
/**
* Release a smart card reader handle that was acquired in ConnectA/ConnectW
*
* @param con connection to client
* @param sc_handle handle to smartcard
*****************************************************************************/
int
APP_CC scard_send_disconnect(struct trans *con, tui32 context, tui32 sc_handle)
{
IRP *irp;
/* setup up IRP */
if ((irp = devredir_irp_new()) == NULL)
{
log_error("system out of memory");
return 1;
}
irp->scard_index = g_scard_index;
irp->CompletionId = g_completion_id++;
irp->DeviceId = g_device_id;
irp->callback = scard_handle_Disconnect_Return;
irp->user_data = con;
/* send IRP to client */
scard_send_Disconnect(irp, context, sc_handle);
return 0;
}
/******************************************************************************
** **
** static functions local to this file **
** **
******************************************************************************/
/**
* Crate a new stream and insert specified IOCTL
*
* @param irp information about the I/O
* @param ioctl the IOCTL code
*
* @return stream with IOCTL inserted in it, NULL on error
*****************************************************************************/
static struct stream * APP_CC
scard_make_new_ioctl(IRP *irp, tui32 ioctl)
{
/*
* format of device control request
*
* DeviceIoRequest
* u16 RDPDR_CTYP_CORE
* u16 PAKID_CORE_DEVICE_IOREQUEST
* u32 DeviceId
* u32 FileId
* u32 CompletionId
* u32 MajorFunction
* u32 MinorFunction
*
* u32 OutputBufferLength SHOULD be 2048
* u32 InputBufferLength
* u32 IoControlCode
* 20 bytes padding
* xx bytes InputBuffer (variable)
*/
struct stream *s;
xstream_new(s, 1024 * 4);
if (s == NULL)
{
log_error("system out of memory");
return s;
}
devredir_insert_DeviceIoRequest(s,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_DEVICE_CONTROL,
0);
xstream_wr_u32_le(s, 2048); /* OutputBufferLength */
xstream_wr_u32_le(s, 0); /* InputBufferLength - insert later */
xstream_wr_u32_le(s, ioctl); /* Ioctl Code */
xstream_seek(s, 20); /* padding */
/* [MS-RPCE] 2.2.6.1 */
xstream_wr_u32_le(s, 0x00081001); /* len 8, LE, v1 */
xstream_wr_u32_le(s, 0xcccccccc); /* filler */
return s;
}
/**
* Create a new smart card device entry and insert it into smartcards[]
*
* @param device_id DeviceId of new card
*
* @return index into smartcards[] on success, -1 on failure
*****************************************************************************/
static int APP_CC
scard_add_new_device(tui32 device_id)
{
int index;
SMARTCARD *sc;
if ((index = scard_get_free_slot()) < 0)
{
log_error("scard_get_free_slot failed");
return -1;
}
if ((sc = g_malloc(sizeof(SMARTCARD), 1)) == NULL)
{
log_error("system out of memory");
return -1;
}
sc->DeviceId = device_id;
smartcards[index] = sc;
return index;
}
/**
* Find first unused entry in smartcards
*
* @return index of first unused entry in smartcards or -1 if smartcards
* is full
*****************************************************************************/
static int APP_CC
scard_get_free_slot(void)
{
int i;
for (i = 0; i < MAX_SMARTCARDS; i++)
{
if (smartcards[i] == NULL)
{
log_debug("found free slot at index %d", i);
return i;
}
}
log_error("too many smart card devices; rejecting this one");
return -1;
}
/**
* Release resources prior to shutting down
*****************************************************************************/
static void APP_CC
scard_release_resources(void)
{
int i;
for (i = 0; i < MAX_SMARTCARDS; i++)
{
if (smartcards[i] != NULL)
{
g_free(smartcards[i]);
smartcards[i] = NULL;
}
}
}
/**
*
*****************************************************************************/
static void APP_CC
scard_send_EstablishContext(IRP *irp, int scope)
{
struct stream *s;
int bytes;
if ((s = scard_make_new_ioctl(irp, SCARD_IOCTL_ESTABLISH_CONTEXT)) == NULL)
{
log_error("scard_make_new_ioctl failed");
return;
}
xstream_wr_u32_le(s, 0x08); /* len */
xstream_wr_u32_le(s, 0); /* unused */
xstream_wr_u32_le(s, scope); /* Ioctl specific data */
xstream_wr_u32_le(s, 0); /* don't know what this is, */
/* but Win7 is sending it */
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* Release a previously established Smart Card context
*****************************************************************************/
static void
scard_send_ReleaseContext(IRP* irp, tui32 context)
{
/* see [MS-RDPESC] 3.1.4.2 */
SMARTCARD* sc;
struct stream* s;
int bytes;
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
if ((s = scard_make_new_ioctl(irp, SCARD_IOCTL_RELEASE_CONTEXT)) == NULL)
return;
/*
* command format
*
* ......
* 20 bytes padding
* u32 4 bytes len 8, LE, v1
* u32 4 bytes filler
* 4 bytes len - don't know what this is, zero for now
* 12 bytes unused
* u32 4 bytes context len
* 4 bytes context
*/
xstream_wr_u32_le(s, 0);
xstream_seek(s, 12);
/* insert context */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, context);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
*
*****************************************************************************/
static void APP_CC
scard_send_ListReaders(IRP *irp, tui32 context, int wide)
{
/* see [MS-RDPESC] 2.2.2.4 */
SMARTCARD *sc;
struct stream *s;
int bytes;
tui32 ioctl;
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
ioctl = (wide) ? SCARD_IOCTL_LIST_READERS_W :
SCARD_IOCTL_LIST_READERS_A;
if ((s = scard_make_new_ioctl(irp, ioctl)) == NULL)
return;
xstream_wr_u32_le(s, 72); /* number of bytes to follow */
xstream_seek(s, 28); /* freerdp does not use this */
/* insert context */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, context);
xstream_wr_u32_le(s, 36); /* length of mszGroups */
xstream_wr_u16_le(s, 0x0053);
xstream_wr_u16_le(s, 0x0043);
xstream_wr_u16_le(s, 0x0061);
xstream_wr_u16_le(s, 0x0072);
xstream_wr_u16_le(s, 0x0064);
xstream_wr_u16_le(s, 0x0024);
xstream_wr_u16_le(s, 0x0041);
xstream_wr_u16_le(s, 0x006c);
xstream_wr_u16_le(s, 0x006c);
xstream_wr_u16_le(s, 0x0052);
xstream_wr_u16_le(s, 0x0065);
xstream_wr_u16_le(s, 0x0061);
xstream_wr_u16_le(s, 0x0064);
xstream_wr_u16_le(s, 0x0065);
xstream_wr_u16_le(s, 0x0072);
xstream_wr_u16_le(s, 0x0073);
xstream_wr_u32_le(s, 0x00);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
/*
scard_device_control: dumping 120 bytes of data
0000 00 08 00 00 58 00 00 00 2c 00 09 00 00 00 00 00 ....X...,.......
0010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020 01 10 08 00 cc cc cc cc 48 00 00 00 00 00 00 00 ........H.......
0030 04 00 00 00 00 00 02 00 24 00 00 00 04 00 02 00 ........$.......
0040 00 00 00 00 ff ff ff ff 04 00 00 00 84 db 03 01 ................
0050 24 00 00 00 53 00 43 00 61 00 72 00 64 00 24 00 $...S.C.a.r.d.$.
0060 41 00 6c 00 6c 00 52 00 65 00 61 00 64 00 65 00 A.l.l.R.e.a.d.e.
0070 72 00 73 00 00 00 00 00 r.s.....
scard_device_control: output_len=2048 input_len=88 ioctl_code=0x9002c
*/
/*
scard_device_control: dumping 120 bytes of data
0000 00 08 00 00 80 00 00 00 14 00 09 00 00 00 00 00 ................
0010 2e 2e 00 00 00 00 00 00 02 00 00 00 00 00 00 00 ................
0020 01 10 08 00 cc cc cc cc 48 00 00 00 00 00 00 00 ........H.......
0030 02 00 00 00 00 00 00 00 72 64 00 00 00 00 00 00 ........rd......
0040 81 27 00 00 00 00 00 00 04 00 00 00 84 b3 03 01 .'..............
0050 24 00 00 00 53 00 43 00 61 00 72 00 64 00 24 00 $...S.C.a.r.d.$.
0060 41 00 6c 00 6c 00 52 00 65 00 61 00 64 00 65 00 A.l.l.R.e.a.d.e.
0070 72 00 73 00 00 00 00 00 r.s.....
scard_device_control: output_len=2048 input_len=128 ioctl_code=0x90014
*/
}
/**
* Get change in status
*
* @param irp I/O resource pkt
* @param wide TRUE if unicode string
* @param timeout timeout in milliseconds, -1 for infinity
* @param num_readers number of entries in rsa
* @param rsa array of READER_STATEs
*****************************************************************************/
static void
scard_send_GetStatusChange(IRP* irp, tui32 context, int wide, tui32 timeout,
tui32 num_readers, READER_STATE* rsa)
{
/* see [MS-RDPESC] 2.2.2.11 for ASCII */
/* see [MS-RDPESC] 2.2.2.12 for Wide char */
SMARTCARD* sc;
READER_STATE* rs;
struct stream* s;
tui32 ioctl;
int bytes;
int i;
int len;
int num_chars;
int index;
twchar w_reader_name[100];
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
ioctl = (wide) ? SCARD_IOCTL_GET_STATUS_CHANGE_W :
SCARD_IOCTL_GET_STATUS_CHANGE_A;
if ((s = scard_make_new_ioctl(irp, ioctl)) == NULL)
return;
xstream_seek(s, 16); /* unused */
xstream_wr_u32_le(s, timeout);
xstream_wr_u32_le(s, num_readers);
xstream_wr_u32_le(s, 0); /* unused */
/* insert context */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, context);
xstream_wr_u32_le(s, 0); /* unused */
/* insert card reader state */
for (i = 0; i < num_readers; i++)
{
rs = &rsa[i];
xstream_wr_u32_le(s, 0); /* unused */
xstream_wr_u32_le(s, rs->current_state);
xstream_wr_u32_le(s, rs->event_state);
xstream_wr_u32_le(s, rs->atr_len);
xstream_copyin(s, rs->atr, 33);
out_uint8s(s, 3);
}
if (wide)
{
/* insert card reader names */
for (i = 0; i < num_readers; i++)
{
rs = &rsa[i];
num_chars = g_mbstowcs(w_reader_name, rs->reader_name, 99);
xstream_wr_u32_le(s, 0); /* unused */
xstream_wr_u32_le(s, 0); /* unused */
xstream_wr_u32_le(s, num_chars);
for (index = 0; index < num_chars; index++)
{
xstream_wr_u16_le(s, w_reader_name[index]);
}
}
}
else
{
/* insert card reader names */
for (i = 0; i < num_readers; i++)
{
rs = &rsa[i];
num_chars = g_mbstowcs(w_reader_name, rs->reader_name, 99);
xstream_wr_u32_le(s, 0); /* unused */
xstream_wr_u32_le(s, 0); /* unused */
xstream_wr_u32_le(s, num_chars);
for (index = 0; index < num_chars; index++)
{
xstream_wr_u8(s, w_reader_name[index]);
}
}
}
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* Send connect command
*
* @param irp I/O resource pkt
* @param wide TRUE if unicode string
* @param rs reader state
*****************************************************************************/
static void scard_send_Connect(IRP* irp, tui32 context, int wide,
READER_STATE* rs)
{
/* see [MS-RDPESC] 2.2.2.13 for ASCII */
/* see [MS-RDPESC] 2.2.2.14 for Wide char */
SMARTCARD* sc;
struct stream* s;
tui32 ioctl;
int bytes;
int len;
int num_chars;
int index;
twchar w_reader_name[100];
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
ioctl = (wide) ? SCARD_IOCTL_CONNECT_W :
SCARD_IOCTL_CONNECT_A;
if ((s = scard_make_new_ioctl(irp, ioctl)) == NULL)
return;
/*
* command format
*
* ......
* 20 bytes padding
* u32 4 bytes len 8, LE, v1
* u32 4 bytes filler
* 20 bytes unused (s->p currently pointed here at unused[0])
* u32 4 bytes dwShareMode
* u32 4 bytes dwPreferredProtocol
* xx bytes reader name
* u32 4 bytes context length (len)
* len bytes context
*/
xstream_seek(s, 20);
xstream_wr_u32_le(s, rs->shared_mode_flag);
xstream_wr_u32_le(s, rs->preferred_protocol);
/* insert reader name */
num_chars = g_mbstowcs(w_reader_name, rs->reader_name, 99);
xstream_wr_u32_le(s, num_chars);
if (wide)
{
for (index = 0; index < num_chars; index++)
xstream_wr_u16_le(s, w_reader_name[index]);
}
else
{
for (index = 0; index < num_chars; index++)
xstream_wr_u8(s, w_reader_name[index]);
}
/* insert context */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, context);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* Lock smart card reader for exclusive access for specified smart
* card reader handle.
*
* @param con connection to client
*****************************************************************************/
static void
scard_send_BeginTransaction(IRP* irp, tui32 sc_handle)
{
/* see [MS-RDPESC] 4.9 */
SMARTCARD* sc;
struct stream* s;
int bytes;
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
if ((s = scard_make_new_ioctl(irp, SCARD_IOCTL_BEGIN_TRANSACTION)) == NULL)
return;
/*
* command format
*
* ......
* 20 bytes padding
* u32 4 bytes len 8, LE, v1
* u32 4 bytes filler
* 36 bytes unused (s->p currently pointed here at unused[0])
* u32 4 bytes len of sc_handle
* 4 bytes sc_handle
*/
xstream_seek(s, 36);
/* insert handle */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, sc_handle);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* Release a smart card reader after being locked by a previously
* successful call to Begin Transaction
*
* @param con connection to client
* @param sc_handle handle to smartcard
*****************************************************************************/
static void
scard_send_EndTransaction(IRP* irp, tui32 sc_handle)
{
/* see [MS-RDPESC] 3.1.4.32 */
SMARTCARD* sc;
struct stream* s;
int bytes;
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
if ((s = scard_make_new_ioctl(irp, SCARD_IOCTL_END_TRANSACTION)) == NULL)
return;
/*
* command format
*
* ......
* 20 bytes padding
* u32 4 bytes len 8, LE, v1
* u32 4 bytes filler
* 24 bytes unused (s->p currently pointed here at unused[0])
* u32 4 bytes disposition
* 8 unused
* u32 4 bytes length of sc_handle
* 4 bytes sc_handle
*/
xstream_seek(s, 24);
xstream_wr_u32_le(s, SCARD_LEAVE_CARD);
xstream_seek(s, 8);
/* insert handle */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, sc_handle);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* Get the status of a connection for a valid smart card reader handle
*
* @param con connection to client
* @param wide TRUE if unicode string
*****************************************************************************/
static void
scard_send_Status(IRP* irp, int wide, tui32 sc_handle)
{
/* see [MS-RDPESC] 2.2.2.18 */
SMARTCARD* sc;
struct stream* s;
int bytes;
tui32 ioctl;
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
ioctl = (wide) ? SCARD_IOCTL_CONNECT_W :
SCARD_IOCTL_CONNECT_A;
if ((s = scard_make_new_ioctl(irp, ioctl)) == NULL)
return;
/*
* command format
*
* ......
* 20 bytes padding
* u32 4 bytes len 8, LE, v1
* u32 4 bytes filler
* 28 bytes unused (s->p currently pointed here at unused[0])
* u32 4 bytes reader len
* u32 4 bytes ATR len
* 8 bytes unused
* u32 4 bytes len of sc_handle
* 4 bytes sc_handle
* 4 bytes unused
*/
xstream_seek(s, 28);
xstream_wr_u32_le(s, -1); /* readerLen, see [MS-RDPESC] 4.11 */
xstream_wr_u32_le(s, 36); /* atrLen, see [MS-RDPESC] 4.11 */
xstream_seek(s, 8);
/* insert sc_handle */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, sc_handle);
xstream_wr_u32_le(s, 0);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* Release a smart card reader handle that was acquired in ConnectA/ConnectW
*
* @param con connection to client
* @param sc_handle handle to smartcard
*****************************************************************************/
static void
scard_send_Disconnect(IRP* irp, tui32 context, tui32 sc_handle)
{
/* see [MS-RDPESC] 3.1.4.30 */
SMARTCARD* sc;
struct stream* s;
int bytes;
if ((sc = smartcards[irp->scard_index]) == NULL)
{
log_error("smartcards[%d] is NULL", irp->scard_index);
return;
}
if ((s = scard_make_new_ioctl(irp, SCARD_IOCTL_DISCONNECT)) == NULL)
return;
/*
* command format
*
* ......
* 20 bytes padding
* u32 4 bytes len 8, LE, v1
* u32 4 bytes filler
* 24 bytes unused (s->p currently pointed here at unused[0])
* u32 4 bytes disposition
* u32 4 bytes context len
* 4 bytes context
* u32 4 bytes length of sc_handle
* 4 bytes sc_handle
*/
xstream_seek(s, 24);
xstream_wr_u32_le(s, SCARD_RESET_CARD);
/* insert context */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, context);
/* insert handle */
xstream_wr_u32_le(s, 4);
xstream_wr_u32_le(s, sc_handle);
/* get stream len */
bytes = xstream_len(s);
/* InputBufferLength is number of bytes AFTER 20 byte padding */
*(s->data + 28) = bytes - 56;
/* send to client */
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/******************************************************************************
** **
** local callbacks into this module **
** **
******************************************************************************/
/**
*
*****************************************************************************/
static void APP_CC
scard_handle_EstablishContext_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 context;
tui32 len;
int tmp;
SMARTCARD *sc;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("failed to establish context - device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
sc = smartcards[irp->scard_index];
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
/* LK_TODO */
g_hexdump(s->p, len);
xstream_rd_u32_le(s, tmp); /* should be len 8, LE, V1 */
xstream_rd_u32_le(s, tmp); /* marshalling flag */
xstream_rd_u32_le(s, tmp); /* ?? */
xstream_rd_u32_le(s, tmp); /* ?? */
xstream_rd_u32_le(s, tmp); /* ?? */
xstream_rd_u32_le(s, tmp); /* ?? */
xstream_rd_u32_le(s, tmp); /* ?? */
xstream_rd_u32_le(s, len); /* len of context in bytes, always 4 */
xstream_rd_u32_le(s, context);
if (LOG_LEVEL == LOG_DEBUG)
log_debug("dumping: )", context);
// LK_TODO delete this
//irp->callback = scard_handle_ListReaders_Return;
scard_function_establish_context_return((struct trans *) (irp->user_data),
context);
devredir_irp_delete(irp);
/* LK_TODO need to delete IRP */
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_ReleaseContext_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("ReleaseContext failed, device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void APP_CC
scard_handle_ListReaders_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("failed to list readers - device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
scard_function_list_readers_return((struct trans *) irp->user_data,
s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_GetStatusChange_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("failed to get status change - device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_Connect_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("failed to connect - device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_BeginTransaction_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("BeginTransaction failed, device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_EndTransaction_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("EndTransaction failed, device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_Status_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("StatusCall failed, device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
/**
*
*****************************************************************************/
static void
scard_handle_Disconnect_Return(struct stream *s, IRP *irp,
tui32 DeviceId, tui32 CompletionId,
tui32 IoStatus)
{
tui32 len;
log_debug("entered");
/* sanity check */
if ((DeviceId != irp->DeviceId) || (CompletionId != irp->CompletionId))
{
log_error("DeviceId/CompletionId do not match those in IRP");
return;
}
if (IoStatus != 0)
{
log_error("Disconnect failed, device not usable");
/* LK_TODO delete irp and smartcard entry */
return;
}
/* get OutputBufferLen */
xstream_rd_u32_le(s, len);
log_debug("leaving");
}
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