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xrdp-proprietary/sesman/chansrv/smartcard_pcsc.c

331 lines
8.0 KiB

/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2013 jay.sorg@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, PCSC daemon standin
* this will act like pcsc daemon
*/
#define PCSC_STANDIN 1
#include "os_calls.h"
#include "smartcard.h"
#include "log.h"
#include "irp.h"
#include "devredir.h"
#include "trans.h"
#if PCSC_STANDIN
/* module based logging */
#define LOG_ERROR 0
#define LOG_INFO 1
#define LOG_DEBUG 2
#define LOG_LEVEL LOG_ERROR
#define log_error(_params...) \
{ \
g_write("[%10.10u]: PCSC %s: %d : ERROR: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_always(_params...) \
{ \
g_write("[%10.10u]: PCSC %s: %d : ALWAYS: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_info(_params...) \
{ \
if (LOG_INFO <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: PCSC %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
#define log_debug(_params...) \
{ \
if (LOG_DEBUG <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: PCSC %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
#define PCSCLITE_MSG_KEY_LEN 16
#define PCSCLITE_MAX_MESSAGE_SIZE 2048
struct version_struct
{
tsi32 major; /**< IPC major \ref PROTOCOL_VERSION_MAJOR */
tsi32 minor; /**< IPC minor \ref PROTOCOL_VERSION_MINOR */
tui32 rv;
};
typedef struct version_struct version_struct;
struct rxSharedSegment
{
tui32 mtype; /** one of the \c pcsc_adm_commands */
tui32 user_id;
tui32 group_id;
tui32 command; /** one of the \c pcsc_msg_commands */
tui64 date;
tui8 key[PCSCLITE_MSG_KEY_LEN]; /* 16 bytes */
union _u
{
tui8 data[PCSCLITE_MAX_MESSAGE_SIZE];
struct version_struct veStr;
} u;
};
typedef struct rxSharedSegment sharedSegmentMsg, *psharedSegmentMsg;
#define RXSHAREDSEGMENT_BYTES 2088
extern int g_display_num; /* in chansrv.c */
/*****************************************************************************/
struct pcsc_client
{
struct trans *con;
};
static struct pcsc_client *g_head = 0;
static struct pcsc_client *g_tail = 0;
static struct trans *g_lis = 0;
static struct trans *g_con = 0; /* todo, remove this */
static char g_pcsc_directory[256] = "";
/*****************************************************************************/
int APP_CC
scard_pcsc_get_wait_objs(tbus *objs, int *count, int *timeout)
{
log_debug("scard_pcsc_get_wait_objs");
if (g_lis != 0)
{
trans_get_wait_objs(g_lis, objs, count);
}
if (g_con != 0)
{
trans_get_wait_objs(g_con, objs, count);
}
return 0;
}
/*****************************************************************************/
int APP_CC
scard_pcsc_check_wait_objs(void)
{
log_debug("scard_pcsc_check_wait_objs");
if (g_lis != 0)
{
trans_check_wait_objs(g_lis);
}
if (g_con != 0)
{
trans_check_wait_objs(g_con);
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
scard_process_version(psharedSegmentMsg msg)
{
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
scard_process_msg(struct stream *s)
{
sharedSegmentMsg msg;
int rv;
g_memset(&msg, 0, sizeof(msg));
in_uint32_le(s, msg.mtype);
in_uint32_le(s, msg.user_id);
in_uint32_le(s, msg.group_id);
in_uint32_le(s, msg.command);
in_uint64_le(s, msg.date);
log_debug("scard_process_msg: mtype 0x%2.2x command 0x%2.2x",
msg.mtype, msg.command);
rv = 0;
switch (msg.mtype)
{
case 0xF8: /* CMD_VERSION */
rv = scard_process_version(&msg);
break;
}
return rv;
}
/*****************************************************************************/
/* returns error */
int DEFAULT_CC
my_pcsc_trans_data_in(struct trans *trans)
{
struct stream *s;
int id;
int size;
int error;
log_debug("my_pcsc_trans_data_in:");
if (trans == 0)
{
return 0;
}
if (trans != g_con)
{
return 1;
}
s = trans_get_in_s(trans);
g_hexdump(s->p, 64);
error = scard_process_msg(s);
return error;
}
/*****************************************************************************/
/* got a new connection from libpcsclite */
int DEFAULT_CC
my_pcsc_trans_conn_in(struct trans *trans, struct trans *new_trans)
{
log_debug("my_pcsc_trans_conn_in:");
if (trans == 0)
{
return 1;
}
if (trans != g_lis)
{
return 1;
}
if (new_trans == 0)
{
return 1;
}
g_con = new_trans;
g_con->trans_data_in = my_pcsc_trans_data_in;
g_con->header_size = RXSHAREDSEGMENT_BYTES;
log_debug("my_pcsc_trans_conn_in: sizeof sharedSegmentMsg is %d",
sizeof(sharedSegmentMsg));
return 0;
}
/*****************************************************************************/
int APP_CC
scard_pcsc_init(void)
{
char port[256];
int error;
log_debug("scard_pcsc_init:");
if (g_lis == 0)
{
g_lis = trans_create(2, 8192, 8192);
g_snprintf(g_pcsc_directory, 255, "/tmp/.xrdp/pcsc%d", g_display_num);
if (g_directory_exist(g_pcsc_directory))
{
if (g_remove_dir(g_pcsc_directory) != 0)
{
log_error("scard_pcsc_init: g_remove_dir failed");
}
}
if (g_create_dir(g_pcsc_directory) != 0)
{
log_error("scard_pcsc_init: g_create_dir failed");
}
g_chmod_hex(g_pcsc_directory, 0x1777);
g_snprintf(port, 255, "%s/pcscd.comm", g_pcsc_directory);
g_lis->trans_conn_in = my_pcsc_trans_conn_in;
error = trans_listen(g_lis, port);
if (error != 0)
{
log_error("scard_pcsc_init: trans_listen failed for port %s",
port);
return 1;
}
}
return 0;
}
/*****************************************************************************/
int APP_CC
scard_pcsc_deinit(void)
{
log_debug("scard_pcsc_deinit:");
if (g_lis != 0)
{
trans_delete(g_lis);
g_lis = 0;
if (g_remove_dir(g_pcsc_directory) != 0)
{
log_error("scard_pcsc_deinit: g_remove_dir failed");
}
g_pcsc_directory[0] = 0;
}
return 0;
}
#else
int APP_CC
scard_pcsc_get_wait_objs(tbus *objs, int *count, int *timeout)
{
return 0;
}
int APP_CC
scard_pcsc_check_wait_objs(void)
{
return 0;
}
int APP_CC
scard_pcsc_init(void)
{
return 0;
}
int APP_CC
scard_pcsc_deinit(void)
{
return 0;
}
#endif