You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
574 lines
18 KiB
574 lines
18 KiB
/**
|
|
* 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 "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...) \
|
|
{ \
|
|
g_write("[%10.10u]: SMART_CARD %s: %d : ERROR: ", \
|
|
g_time3(), __func__, __LINE__); \
|
|
g_writeln (_params); \
|
|
}
|
|
|
|
#define log_info(_params...) \
|
|
{ \
|
|
if (LOG_INFO <= LOG_LEVEL) \
|
|
{ \
|
|
g_write("[%10.10u]: SMART_CARD %s: %d : ", \
|
|
g_time3(), __func__, __LINE__); \
|
|
g_writeln (_params); \
|
|
} \
|
|
}
|
|
|
|
#define log_debug(_params...) \
|
|
{ \
|
|
if (LOG_DEBUG <= LOG_LEVEL) \
|
|
{ \
|
|
g_write("[%10.10u]: SMART_CARD %s: %d : ", \
|
|
g_time3(), __func__, __LINE__); \
|
|
g_writeln (_params); \
|
|
} \
|
|
}
|
|
|
|
/* [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 0x000900A0 /* GetStatusChangeA */
|
|
#define SCARD_IOCTL_CANCEL 0x000900A8 /* Cancel */
|
|
#define SCARD_IOCTL_CONNECT 0x000900AC /* ConnectA */
|
|
#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 0x000900C8 /* StatusA */
|
|
#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
|
|
|
|
#define MAX_SMARTCARDS 16
|
|
|
|
/* stores info about a smart card */
|
|
typedef struct smartcard
|
|
{
|
|
tui32 DeviceId;
|
|
char Context[16]; /* opaque context; save as passed to us */
|
|
int Context_len; /* Context len in bytes */
|
|
} SMARTCARD;
|
|
|
|
SMARTCARD *smartcards[MAX_SMARTCARDS];
|
|
int g_smartcards_inited = 0;
|
|
|
|
extern tui32 g_completion_id;
|
|
extern int g_rdpdr_chan_id; /* in chansrv.c */
|
|
|
|
/* forward declarations specific to this file */
|
|
static void scard_send_EstablishContext(IRP *irp);
|
|
static void scard_send_ListReaders(IRP *irp, int wide);
|
|
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);
|
|
|
|
/******************************************************************************
|
|
** non static functions **
|
|
******************************************************************************/
|
|
|
|
void APP_CC
|
|
scard_device_announce(tui32 device_id)
|
|
{
|
|
IRP *irp;
|
|
|
|
log_debug("entered: device_id=%d", device_id);
|
|
|
|
if (!g_smartcards_inited)
|
|
{
|
|
g_memset(&smartcards, 0, sizeof(smartcards));
|
|
g_smartcards_inited = 1;
|
|
}
|
|
|
|
if ((irp = devredir_irp_new()) == NULL)
|
|
{
|
|
log_error("system out of memory");
|
|
return;
|
|
}
|
|
|
|
irp->scard_index = scard_add_new_device(device_id);
|
|
if (irp->scard_index < 0)
|
|
{
|
|
log_debug("NOT adding smartcard with DeviceId=%d to list", device_id);
|
|
devredir_irp_delete(irp);
|
|
return;
|
|
}
|
|
|
|
log_debug("added smartcard with DeviceId=%d to list", device_id);
|
|
|
|
irp->CompletionId = g_completion_id++;
|
|
irp->DeviceId = device_id;
|
|
irp->callback = scard_handle_EstablishContext_Return;
|
|
|
|
scard_send_EstablishContext(irp);
|
|
log_debug("leaving");
|
|
}
|
|
|
|
/******************************************************************************
|
|
** callbacks into this module **
|
|
******************************************************************************/
|
|
|
|
void APP_CC
|
|
scard_handle_EstablishContext_Return(struct stream *s, IRP *irp,
|
|
tui32 DeviceId, tui32 CompletionId,
|
|
tui32 IoStatus)
|
|
{
|
|
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 */
|
|
sc->Context_len = len;
|
|
xstream_copyout(sc->Context, s, len);
|
|
|
|
if (LOG_LEVEL == LOG_DEBUG)
|
|
{
|
|
log_debug("dumping context (%d bytes)", sc->Context_len);
|
|
g_hexdump(sc->Context, sc->Context_len);
|
|
}
|
|
|
|
irp->callback = scard_handle_ListReaders_Return;
|
|
scard_send_ListReaders(irp, 1);
|
|
|
|
/* LK_TODO need to delete IRP */
|
|
log_debug("leaving");
|
|
}
|
|
|
|
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);
|
|
|
|
/* LK_TODO */
|
|
log_debug("dumping %d bytes", len);
|
|
g_hexdump(s->p, len);
|
|
|
|
log_debug("leaving");
|
|
}
|
|
|
|
/******************************************************************************
|
|
** static functions local to this file **
|
|
******************************************************************************/
|
|
|
|
/**
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void APP_CC
|
|
scard_send_EstablishContext(IRP *irp)
|
|
{
|
|
struct stream *s;
|
|
int bytes;
|
|
|
|
if ((s = scard_make_new_ioctl(irp, SCARD_IOCTL_ESTABLISH_CONTEXT)) == NULL)
|
|
return;
|
|
|
|
xstream_wr_u32_le(s, 0x08); /* len */
|
|
xstream_wr_u32_le(s, 0); /* unused */
|
|
xstream_wr_u32_le(s, SCARD_SCOPE_SYSTEM); /* 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);
|
|
}
|
|
|
|
/**
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void APP_CC
|
|
scard_send_ListReaders(IRP *irp, 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 > 0) ? 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, 0x1c); /* freerdp does not use this */
|
|
|
|
/* insert context */
|
|
xstream_wr_u32_le(s, sc->Context_len);
|
|
xstream_copyin(s, sc->Context, sc->Context_len);
|
|
|
|
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
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* 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 * 3);
|
|
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)
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
*****************************************************************************/
|
|
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();
|
|
}
|