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xrdp-proprietary/sesman/chansrv/devredir.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* xrdp device redirection - only drive redirection is currently supported
*
* 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.
*/
/*
* TODO
* o there is one difference in the protocol initialization
* sequence upon reconnection: if a user is already logged on,
* send a SERVER_USER_LOGGED_ON msg as per section 3.3.5.1.5
*
* o how to announce / delete a drive after a connection has been
* established?
*
* o need to support multiple drives;
* o for multiple drives, we cannot have global device_id's and file_id's
* and all functions must be reenterant
* o replace printf's with log_xxx
* o mark local funcs with static
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include "arch.h"
#include "parse.h"
#include "os_calls.h"
#include "log.h"
#include "chansrv.h"
#include "chansrv_fuse.h"
#include "devredir.h"
#include "smartcard.h"
/* module based logging */
#define LOG_ERROR 0
#define LOG_INFO 1
#define LOG_DEBUG 2
#ifndef LOG_LEVEL
#define LOG_LEVEL LOG_ERROR
#endif
#define log_error(_params...) \
{ \
g_write("[%10.10u]: DEV_REDIR %s: %d : ERROR: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_info(_params...) \
{ \
if (LOG_INFO <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: DEV_REDIR %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
#define log_debug(_params...) \
{ \
if (LOG_DEBUG <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: DEV_REDIR %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
/* globals */
extern int g_rdpdr_chan_id; /* in chansrv.c */
int g_is_printer_redir_supported = 0;
int g_is_port_redir_supported = 0;
int g_is_drive_redir_supported = 0;
int g_is_smartcard_redir_supported = 0;
int g_drive_redir_version = 1;
char g_full_name_for_filesystem[1024];
tui32 g_completion_id = 1;
tui32 g_clientID; /* unique client ID - announced by client */
tui32 g_device_id; /* unique device ID - announced by client */
tui16 g_client_rdp_version; /* returned by client */
struct stream *g_input_stream = NULL;
void xfuse_devredir_cb_write_file(void *vp, const char *buf, size_t length);
/*****************************************************************************/
int
dev_redir_init(void)
{
struct stream *s;
int bytes;
int fd;
union _u
{
tui32 clientID;
char buf[4];
} u;
/* get a random number that will act as a unique clientID */
if ((fd = open("/dev/urandom", O_RDONLY)) != -1)
{
if (read(fd, u.buf, 4) != 4)
{
}
close(fd);
}
else
{
/* /dev/urandom did not work - use address of struct s */
tui64 u64 = (tui64) (tintptr) &s;
u.clientID = (tui32) u64;
}
/* setup stream */
xstream_new(s, 1024);
/* initiate drive redirection protocol by sending Server Announce Req */
xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
xstream_wr_u16_le(s, PAKID_CORE_SERVER_ANNOUNCE);
xstream_wr_u16_le(s, 0x0001); /* server major ver */
xstream_wr_u16_le(s, 0x000C); /* server minor ver - pretend 2 b Win 7 */
xstream_wr_u32_le(s, u.clientID); /* unique ClientID */
/* send data to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
return 0;
}
/*****************************************************************************/
int
dev_redir_deinit(void)
{
scard_deinit();
return 0;
}
/**
* @brief process incoming data
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
dev_redir_data_in(struct stream *s, int chan_id, int chan_flags, int length,
int total_length)
{
struct stream *ls;
tui16 comp_type;
tui16 pktID;
tui16 minor_ver;
int rv = 0;
/*
* handle packet fragmentation
*/
if ((chan_flags & 3) == 3)
{
/* all data contained in one packet */
ls = s;
}
else
{
/* is this is the first packet? */
if (chan_flags & 1)
xstream_new(g_input_stream, total_length);
xstream_copyin(g_input_stream, s->p, length);
/* in last packet, chan_flags & 0x02 will be true */
if ((chan_flags & 2) == 0)
return 0;
g_input_stream->p = g_input_stream->data;
ls = g_input_stream;
}
/* read header from incoming data */
xstream_rd_u16_le(ls, comp_type);
xstream_rd_u16_le(ls, pktID);
/* for now we only handle core type, not printers */
if (comp_type != RDPDR_CTYP_CORE)
{
log_error("invalid component type in response; expected 0x%x got 0x%x",
RDPDR_CTYP_CORE, comp_type);
rv = -1;
goto done;
}
/* figure out what kind of response we have gotten */
switch (pktID)
{
case PAKID_CORE_CLIENTID_CONFIRM:
xstream_seek(ls, 2); /* major version, we ignore it */
xstream_rd_u16_le(ls, minor_ver);
xstream_rd_u32_le(ls, g_clientID);
g_client_rdp_version = minor_ver;
switch (minor_ver)
{
case RDP_CLIENT_50:
break;
case RDP_CLIENT_51:
break;
case RDP_CLIENT_52:
break;
case RDP_CLIENT_60_61:
break;
}
// LK_TODO dev_redir_send_server_clientID_confirm();
break;
case PAKID_CORE_CLIENT_NAME:
/* client is telling us its computer name; do we even care? */
/* let client know login was successful */
dev_redir_send_server_user_logged_on();
usleep(1000 * 100);
/* let client know our capabilities */
dev_redir_send_server_core_cap_req();
/* send confirm clientID */
dev_redir_send_server_clientID_confirm();
break;
case PAKID_CORE_CLIENT_CAPABILITY:
dev_redir_proc_client_core_cap_resp(ls);
break;
case PAKID_CORE_DEVICELIST_ANNOUNCE:
devredir_proc_client_devlist_announce_req(ls);
break;
case PAKID_CORE_DEVICE_IOCOMPLETION:
dev_redir_proc_device_iocompletion(ls);
break;
default:
log_error("got unknown response 0x%x", pktID);
break;
}
done:
if (g_input_stream)
{
xstream_free(g_input_stream);
g_input_stream = NULL;
}
return rv;
}
/*****************************************************************************/
int
dev_redir_get_wait_objs(tbus *objs, int *count, int *timeout)
{
if (g_is_smartcard_redir_supported)
{
return scard_get_wait_objs(objs, count, timeout);
}
return 0;
}
/*****************************************************************************/
int
dev_redir_check_wait_objs(void)
{
if (g_is_smartcard_redir_supported)
{
return scard_check_wait_objs();
}
return 0;
}
/**
* @brief let client know our capabilities
*****************************************************************************/
void dev_redir_send_server_core_cap_req(void)
{
struct stream *s;
int bytes;
xstream_new(s, 1024);
/* setup header */
xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
xstream_wr_u16_le(s, PAKID_CORE_SERVER_CAPABILITY);
xstream_wr_u16_le(s, 5); /* num of caps we are sending */
xstream_wr_u16_le(s, 0x0000); /* padding */
/* setup general capability */
xstream_wr_u16_le(s, CAP_GENERAL_TYPE); /* CapabilityType */
xstream_wr_u16_le(s, 44); /* CapabilityLength - len of this */
/* CAPABILITY_SET in bytes, inc */
/* the header */
xstream_wr_u32_le(s, 2); /* Version */
xstream_wr_u32_le(s, 2); /* O.S type */
xstream_wr_u32_le(s, 0); /* O.S version */
xstream_wr_u16_le(s, 1); /* protocol major version */
xstream_wr_u16_le(s, g_client_rdp_version); /* protocol minor version */
xstream_wr_u32_le(s, 0xffff); /* I/O code 1 */
xstream_wr_u32_le(s, 0); /* I/O code 2 */
xstream_wr_u32_le(s, 7); /* Extended PDU */
xstream_wr_u32_le(s, 0); /* extra flags 1 */
xstream_wr_u32_le(s, 0); /* extra flags 2 */
xstream_wr_u32_le(s, 2); /* special type device cap */
/* setup printer capability */
xstream_wr_u16_le(s, CAP_PRINTER_TYPE);
xstream_wr_u16_le(s, 8);
xstream_wr_u32_le(s, 1);
/* setup serial port capability */
xstream_wr_u16_le(s, CAP_PORT_TYPE);
xstream_wr_u16_le(s, 8);
xstream_wr_u32_le(s, 1);
/* setup file system capability */
xstream_wr_u16_le(s, CAP_DRIVE_TYPE); /* CapabilityType */
xstream_wr_u16_le(s, 8); /* CapabilityLength - len of this */
/* CAPABILITY_SET in bytes, inc */
/* the header */
xstream_wr_u32_le(s, 2); /* Version */
/* setup smart card capability */
xstream_wr_u16_le(s, CAP_SMARTCARD_TYPE);
xstream_wr_u16_le(s, 8);
xstream_wr_u32_le(s, 1);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
void dev_redir_send_server_clientID_confirm(void)
{
struct stream *s;
int bytes;
xstream_new(s, 1024);
/* setup stream */
xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
xstream_wr_u16_le(s, PAKID_CORE_CLIENTID_CONFIRM);
xstream_wr_u16_le(s, 0x0001);
xstream_wr_u16_le(s, g_client_rdp_version);
xstream_wr_u32_le(s, g_clientID);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
void dev_redir_send_server_user_logged_on(void)
{
struct stream *s;
int bytes;
xstream_new(s, 1024);
/* setup stream */
xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
xstream_wr_u16_le(s, PAKID_CORE_USER_LOGGEDON);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
void devredir_send_server_device_announce_resp(tui32 device_id)
{
struct stream *s;
int bytes;
xstream_new(s, 1024);
/* setup stream */
xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
xstream_wr_u16_le(s, PAKID_CORE_DEVICE_REPLY);
xstream_wr_u32_le(s, device_id);
xstream_wr_u32_le(s, 0); /* ResultCode */
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/**
* @return 0 on success, -1 on failure
*****************************************************************************/
int dev_redir_send_drive_create_request(tui32 device_id,
const char *path,
tui32 DesiredAccess,
tui32 CreateOptions,
tui32 CreateDisposition,
tui32 completion_id)
{
struct stream *s;
int bytes;
int len;
log_debug("DesiredAccess=0x%x CreateDisposition=0x%x CreateOptions=0x%x",
DesiredAccess, CreateDisposition, CreateOptions);
/* path in unicode needs this much space */
len = ((g_mbstowcs(NULL, path, 0) * sizeof(twchar)) / 2) + 2;
xstream_new(s, 1024 + len);
devredir_insert_DeviceIoRequest(s,
device_id,
0,
completion_id,
IRP_MJ_CREATE,
0);
xstream_wr_u32_le(s, DesiredAccess); /* DesiredAccess */
xstream_wr_u32_le(s, 0); /* AllocationSize high unused */
xstream_wr_u32_le(s, 0); /* AllocationSize low unused */
xstream_wr_u32_le(s, 0); /* FileAttributes */
xstream_wr_u32_le(s, 3); /* SharedAccess LK_TODO */
xstream_wr_u32_le(s, CreateDisposition); /* CreateDisposition */
xstream_wr_u32_le(s, CreateOptions); /* CreateOptions */
xstream_wr_u32_le(s, len); /* PathLength */
devredir_cvt_to_unicode(s->p, path); /* path in unicode */
xstream_seek(s, len);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
return 0;
}
/**
* Close a request previously created by dev_redir_send_drive_create_request()
*****************************************************************************/
int dev_redir_send_drive_close_request(tui16 Component, tui16 PacketId,
tui32 DeviceId,
tui32 FileId,
tui32 CompletionId,
tui32 MajorFunction,
tui32 MinorFunc,
int pad_len)
{
struct stream *s;
int bytes;
xstream_new(s, 1024);
devredir_insert_DeviceIoRequest(s, DeviceId, FileId, CompletionId,
MajorFunction, MinorFunc);
if (pad_len)
xstream_seek(s, pad_len);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
log_debug("sent close request; expect CID_FILE_CLOSE");
return 0;
}
/**
* @brief ask client to enumerate directory
*
* Server Drive Query Directory Request
* DR_DRIVE_QUERY_DIRECTORY_REQ
*
*****************************************************************************/
// LK_TODO Path needs to be Unicode
void dev_redir_send_drive_dir_request(IRP *irp, tui32 device_id,
tui32 InitialQuery, char *Path)
{
struct stream *s;
int bytes;
char upath[4096]; // LK_TODO need to malloc this
int path_len = 0;
/* during Initial Query, Path cannot be NULL */
if (InitialQuery)
{
if (Path == NULL)
{
return;
}
/* Path in unicode needs this much space */
path_len = ((g_mbstowcs(NULL, Path, 0) * sizeof(twchar)) / 2) + 2;
devredir_cvt_to_unicode(upath, Path);
}
xstream_new(s, 1024 + path_len);
irp->completion_type = CID_DIRECTORY_CONTROL;
devredir_insert_DeviceIoRequest(s,
device_id,
irp->FileId,
irp->CompletionId,
IRP_MJ_DIRECTORY_CONTROL,
IRP_MN_QUERY_DIRECTORY);
#ifdef USE_SHORT_NAMES_IN_DIR_LISTING
xstream_wr_u32_le(s, FileBothDirectoryInformation); /* FsInformationClass */
#else
xstream_wr_u32_le(s, FileDirectoryInformation); /* FsInformationClass */
#endif
xstream_wr_u8(s, InitialQuery); /* InitialQuery */
if (!InitialQuery)
{
xstream_wr_u32_le(s, 0); /* PathLength */
xstream_seek(s, 23);
}
else
{
xstream_wr_u32_le(s, path_len); /* PathLength */
xstream_seek(s, 23); /* Padding */
xstream_wr_string(s, upath, path_len);
}
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/******************************************************************************
** process data received from client **
******************************************************************************/
/**
* @brief process client's response to our core_capability_req() msg
*
* @param s stream containing client's response
*****************************************************************************/
void dev_redir_proc_client_core_cap_resp(struct stream *s)
{
int i;
tui16 num_caps;
tui16 cap_type;
tui16 cap_len;
tui32 cap_version;
char* holdp;
xstream_rd_u16_le(s, num_caps);
xstream_seek(s, 2); /* padding */
for (i = 0; i < num_caps; i++)
{
holdp = s->p;
xstream_rd_u16_le(s, cap_type);
xstream_rd_u16_le(s, cap_len);
xstream_rd_u32_le(s, cap_version);
switch (cap_type)
{
case CAP_GENERAL_TYPE:
log_debug("got CAP_GENERAL_TYPE");
break;
case CAP_PRINTER_TYPE:
log_debug("got CAP_PRINTER_TYPE");
g_is_printer_redir_supported = 1;
break;
case CAP_PORT_TYPE:
log_debug("got CAP_PORT_TYPE");
g_is_port_redir_supported = 1;
break;
case CAP_DRIVE_TYPE:
log_debug("got CAP_DRIVE_TYPE");
g_is_drive_redir_supported = 1;
if (cap_version == 2)
{
g_drive_redir_version = 2;
}
break;
case CAP_SMARTCARD_TYPE:
log_debug("got CAP_SMARTCARD_TYPE");
g_is_smartcard_redir_supported = 1;
scard_init();
break;
}
s->p = holdp + cap_len;
}
}
void devredir_proc_client_devlist_announce_req(struct stream *s)
{
unsigned int i;
int j;
tui32 device_count;
tui32 device_type;
tui32 device_data_len;
char preferred_dos_name[9];
/* get number of devices being announced */
xstream_rd_u32_le(s, device_count);
log_debug("num of devices announced: %d", device_count);
for (i = 0; i < device_count; i++)
{
xstream_rd_u32_le(s, device_type);
xstream_rd_u32_le(s, g_device_id);
switch (device_type)
{
case RDPDR_DTYP_FILESYSTEM:
/* get preferred DOS name */
for (j = 0; j < 8; j++)
{
preferred_dos_name[j] = *s->p++;
}
/* DOS names that are 8 chars long are not NULL terminated */
preferred_dos_name[8] = 0;
/* get device data len */
xstream_rd_u32_le(s, device_data_len);
if (device_data_len)
{
xstream_rd_string(g_full_name_for_filesystem, s,
device_data_len);
}
log_debug("device_type=FILE_SYSTEM device_id=0x%x dosname=%s "
"device_data_len=%d full_name=%s", g_device_id,
preferred_dos_name,
device_data_len, g_full_name_for_filesystem);
devredir_send_server_device_announce_resp(g_device_id);
/* create share directory in xrdp file system; */
/* think of this as the mount point for this share */
xfuse_create_share(g_device_id, preferred_dos_name);
break;
case RDPDR_DTYP_SMARTCARD:
/* get preferred DOS name */
for (j = 0; j < 8; j++)
{
preferred_dos_name[j] = *s->p++;
}
/* DOS names that are 8 chars long are not NULL terminated */
preferred_dos_name[8] = 0;
/* for smart cards, device data len always 0 */
log_debug("device_type=SMARTCARD device_id=0x%x dosname=%s",
g_device_id, preferred_dos_name);
devredir_send_server_device_announce_resp(g_device_id);
scard_device_announce(g_device_id);
break;
/* we don't yet support these devices */
case RDPDR_DTYP_SERIAL:
case RDPDR_DTYP_PARALLEL:
case RDPDR_DTYP_PRINT:
log_debug("unsupported dev: 0x%x", device_type);
break;
}
}
}
void
dev_redir_proc_device_iocompletion(struct stream *s)
{
FUSE_DATA *fuse_data = NULL;
IRP *irp = NULL;
tui32 DeviceId;
tui32 CompletionId;
tui32 IoStatus;
tui32 Length;
xstream_rd_u32_le(s, DeviceId);
xstream_rd_u32_le(s, CompletionId);
xstream_rd_u32_le(s, IoStatus);
log_debug("entered: IoStatus=0x%x CompletionId=%d", IoStatus, CompletionId);
if ((irp = devredir_irp_find(CompletionId)) == NULL)
{
log_error("IRP with completion ID %d not found", CompletionId);
return;
}
/* if callback has been set, call it */
if (irp->callback)
{
(*irp->callback)(s, irp, DeviceId, CompletionId, IoStatus);
goto done;
}
switch (irp->completion_type)
{
case CID_CREATE_DIR_REQ:
log_debug("got CID_CREATE_DIR_REQ");
if (IoStatus != NT_STATUS_SUCCESS)
{
/* we were trying to create a request to enumerate a dir */
/* that does not exist; let FUSE know */
fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data)
{
xfuse_devredir_cb_enum_dir_done(fuse_data->data_ptr,
IoStatus);
free(fuse_data);
}
devredir_irp_delete(irp);
return;
}
xstream_rd_u32_le(s, irp->FileId);
log_debug("got CID_CREATE_DIR_REQ IoStatus=0x%x FileId=%d",
IoStatus, irp->FileId);
dev_redir_send_drive_dir_request(irp, DeviceId, 1, irp->pathname);
break;
case CID_CREATE_OPEN_REQ:
xstream_rd_u32_le(s, irp->FileId);
log_debug("got CID_CREATE_OPEN_REQ IoStatus=0x%x FileId=%d",
IoStatus, irp->FileId);
fuse_data = devredir_fuse_data_dequeue(irp);
xfuse_devredir_cb_open_file(fuse_data->data_ptr, IoStatus,
DeviceId, irp->FileId);
if ((irp->type == S_IFDIR) || (IoStatus != NT_STATUS_SUCCESS))
devredir_irp_delete(irp);
break;
case CID_READ:
log_debug("got CID_READ");
xstream_rd_u32_le(s, Length);
fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data == NULL)
{
log_error("fuse_data is NULL");
}
else
{
xfuse_devredir_cb_read_file(fuse_data->data_ptr, s->p, Length);
devredir_irp_delete(irp);
}
break;
case CID_WRITE:
log_debug("got CID_WRITE");
xstream_rd_u32_le(s, Length);
fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data == NULL)
{
log_error("fuse_data is NULL");
}
else
{
xfuse_devredir_cb_write_file(fuse_data->data_ptr, s->p, Length);
devredir_irp_delete(irp);
}
break;
case CID_CLOSE:
log_debug("got CID_CLOSE");
log_debug("deleting irp with completion_id=%d comp_type=%d",
irp->CompletionId, irp->completion_type);
devredir_irp_delete(irp);
break;
case CID_FILE_CLOSE:
log_debug("got CID_FILE_CLOSE");
fuse_data = devredir_fuse_data_dequeue(irp);
xfuse_devredir_cb_file_close(fuse_data->data_ptr);
devredir_irp_delete(irp);
break;
case CID_DIRECTORY_CONTROL:
log_debug("got CID_DIRECTORY_CONTROL");
dev_redir_proc_query_dir_response(irp, s, DeviceId,
CompletionId, IoStatus);
break;
case CID_RMDIR_OR_FILE:
log_debug("got CID_RMDIR_OR_FILE");
xstream_rd_u32_le(s, irp->FileId);
devredir_proc_cid_rmdir_or_file(irp, IoStatus);
return;
break;
case CID_RMDIR_OR_FILE_RESP:
log_debug("got CID_RMDIR_OR_FILE_RESP");
devredir_proc_cid_rmdir_or_file_resp(irp, IoStatus);
break;
case CID_RENAME_FILE:
log_debug("got CID_RENAME_FILE");
xstream_rd_u32_le(s, irp->FileId);
devredir_proc_cid_rename_file(irp, IoStatus);
return;
break;
case CID_RENAME_FILE_RESP:
log_debug("got CID_RENAME_FILE_RESP");
devredir_proc_cid_rename_file_resp(irp, IoStatus);
break;
default:
log_error("got unknown CompletionID: DeviceId=0x%x "
"CompletionId=0x%x IoStatus=0x%x",
DeviceId, CompletionId, IoStatus);
break;
}
done:
if (fuse_data)
{
log_debug("free FUSE_DATA=%p", fuse_data);
free(fuse_data);
}
log_debug("exiting");
}
void
dev_redir_proc_query_dir_response(IRP *irp,
struct stream *s_in,
tui32 DeviceId,
tui32 CompletionId,
tui32 IoStatus)
{
FUSE_DATA *fuse_data = NULL;
XRDP_INODE *xinode;
tui32 Length;
tui64 CreationTime;
tui64 LastAccessTime;
tui64 LastWriteTime;
tui64 EndOfFile;
tui32 FileAttributes;
tui32 FileNameLength;
tui32 status;
char filename[256];
unsigned int i = 0;
xstream_rd_u32_le(s_in, Length);
if ((IoStatus == NT_STATUS_UNSUCCESSFUL) ||
(IoStatus == STATUS_NO_MORE_FILES))
{
status = (IoStatus == STATUS_NO_MORE_FILES) ? 0 : IoStatus;
fuse_data = devredir_fuse_data_dequeue(irp);
xfuse_devredir_cb_enum_dir_done(fuse_data->data_ptr, status);
irp->completion_type = CID_CLOSE;
dev_redir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, 0, 32);
free(fuse_data);
return;
}
/* TODO check status for errors */
/* process FILE_DIRECTORY_INFORMATION structures */
while (i < Length)
{
log_debug("processing FILE_DIRECTORY_INFORMATION structs");
xstream_seek(s_in, 4); /* NextEntryOffset */
xstream_seek(s_in, 4); /* FileIndex */
xstream_rd_u64_le(s_in, CreationTime);
xstream_rd_u64_le(s_in, LastAccessTime);
xstream_rd_u64_le(s_in, LastWriteTime);
xstream_seek(s_in, 8); /* ChangeTime */
xstream_rd_u64_le(s_in, EndOfFile);
xstream_seek(s_in, 8); /* AllocationSize */
xstream_rd_u32_le(s_in, FileAttributes);
xstream_rd_u32_le(s_in, FileNameLength);
#ifdef USE_SHORT_NAMES_IN_DIR_LISTING
xstream_seek(s_in, 4); /* EaSize */
xstream_seek(s_in, 1); /* ShortNameLength */
xstream_seek(s_in, 1); /* Reserved */
xstream_seek(s_in, 23); /* ShortName in Unicode */
#endif
devredir_cvt_from_unicode_len(filename, s_in->p, FileNameLength);
#ifdef USE_SHORT_NAMES_IN_DIR_LISTING
i += 70 + 23 + FileNameLength;
#else
i += 64 + FileNameLength;
#endif
//log_debug("CreationTime: 0x%llx", CreationTime);
//log_debug("LastAccessTime: 0x%llx", LastAccessTime);
//log_debug("LastWriteTime: 0x%llx", LastWriteTime);
//log_debug("EndOfFile: %lld", EndOfFile);
//log_debug("FileAttributes: 0x%x", FileAttributes);
#ifdef USE_SHORT_NAMES_IN_DIR_LISTING
//log_debug("ShortNameLength: %d", ShortNameLength);
#endif
//log_debug("FileNameLength: %d", FileNameLength);
log_debug("FileName: %s", filename);
xinode = g_new0(struct xrdp_inode, 1);
if (xinode == NULL)
{
log_error("system out of memory");
fuse_data = devredir_fuse_data_peek(irp);
xfuse_devredir_cb_enum_dir(fuse_data->data_ptr, NULL);
return;
}
strcpy(xinode->name, filename);
xinode->size = (size_t) EndOfFile;
xinode->mode = WINDOWS_TO_LINUX_FILE_PERM(FileAttributes);
xinode->atime = WINDOWS_TO_LINUX_TIME(LastAccessTime);
xinode->mtime = WINDOWS_TO_LINUX_TIME(LastWriteTime);
xinode->ctime = WINDOWS_TO_LINUX_TIME(CreationTime);
/* add this entry to xrdp file system */
fuse_data = devredir_fuse_data_peek(irp);
xfuse_devredir_cb_enum_dir(fuse_data->data_ptr, xinode);
}
dev_redir_send_drive_dir_request(irp, DeviceId, 0, NULL);
}
/**
* FUSE calls this function whenever it wants us to enumerate a dir
*
* @param fusep opaque data struct that we just pass back to FUSE when done
* @param device_id device_id of the redirected share
* @param path the dir path to enumerate
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
dev_redir_get_dir_listing(void *fusep, tui32 device_id, const char *path)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval;
IRP *irp;
log_debug("fusep=%p", fusep);
if ((irp = devredir_irp_new()) == NULL)
return -1;
strncpy(irp->pathname, path, 255);
/* convert / to windows compatible \ */
devredir_cvt_slash(irp->pathname);
irp->CompletionId = g_completion_id++;
irp->completion_type = CID_CREATE_DIR_REQ;
irp->DeviceId = device_id;
devredir_fuse_data_enqueue(irp, fusep);
DesiredAccess = DA_FILE_READ_DATA | DA_SYNCHRONIZE;
CreateOptions = CO_FILE_DIRECTORY_FILE | CO_FILE_SYNCHRONOUS_IO_NONALERT;
CreateDisposition = CD_FILE_OPEN;
rval = dev_redir_send_drive_create_request(device_id, irp->pathname,
DesiredAccess, CreateOptions,
CreateDisposition,
irp->CompletionId);
log_debug("looking for device_id=%d path=%s", device_id, irp->pathname);
/* when we get a response to dev_redir_send_drive_create_request(), we */
/* call dev_redir_send_drive_dir_request(), which needs the following */
/* at the end of the path argument */
if (dev_redir_string_ends_with(irp->pathname, '\\'))
strcat(irp->pathname, "*");
else
strcat(irp->pathname, "\\*");
return rval;
}
int
dev_redir_file_open(void *fusep, tui32 device_id, const char *path,
int mode, int type, const char *gen_buf)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval;
IRP *irp;
log_debug("device_id=%d path=%s mode=0x%x", device_id, path, mode);
if ((irp = devredir_irp_new()) == NULL)
return -1;
if (type & OP_RENAME_FILE)
{
irp->completion_type = CID_RENAME_FILE;
strncpy(irp->gen_buf, gen_buf, 1023);
}
else
{
irp->completion_type = CID_CREATE_OPEN_REQ;
}
irp->CompletionId = g_completion_id++;
irp->DeviceId = device_id;
strncpy(irp->pathname, path, 255);
devredir_fuse_data_enqueue(irp, fusep);
if (mode & O_CREAT)
{
log_debug("open file in O_CREAT");
DesiredAccess = 0x0016019f; /* got this value from windows */
if (type & S_IFDIR)
{
log_debug("creating dir");
CreateOptions = CO_FILE_DIRECTORY_FILE | CO_FILE_SYNCHRONOUS_IO_NONALERT;
irp->type = S_IFDIR;
}
else
{
log_debug("creating file");
CreateOptions = 0x44; /* got this value from windows */
}
//CreateDisposition = CD_FILE_CREATE;
CreateDisposition = 0x02; /* got this value from windows */
}
else
{
log_debug("open file in O_RDWR");
#if 1
/* without the 0x00000010 rdesktop opens files in */
/* O_RDONLY instead of O_RDWR mode */
if (mode & O_RDWR)
DesiredAccess = DA_FILE_READ_DATA | DA_FILE_WRITE_DATA | DA_SYNCHRONIZE | 0x00000010;
else
DesiredAccess = DA_FILE_READ_DATA | DA_SYNCHRONIZE;
CreateOptions = CO_FILE_SYNCHRONOUS_IO_NONALERT;
CreateDisposition = CD_FILE_OPEN; // WAS 1
#else
/* got this value from windows; the 0x00000010 was added by LK; */
/* without this rdesktop opens files in O_RDONLY instead of */
/* O_RDWR mode */
DesiredAccess = 0x00120089 | 0x00000010;
CreateOptions = 0x20060;
CreateDisposition = 0x01;
#endif
}
rval = dev_redir_send_drive_create_request(device_id, path,
DesiredAccess, CreateOptions,
CreateDisposition,
irp->CompletionId);
return rval;
}
int devredir_file_close(void *fusep, tui32 device_id, tui32 FileId)
{
IRP *irp;
log_debug("entered: fusep=%p device_id=%d FileId=%d",
fusep, device_id, FileId);
#if 0
if ((irp = devredir_irp_new()) == NULL)
return -1;
irp->CompletionId = g_completion_id++;
#else
if ((irp = devredir_irp_find_by_fileid(FileId)) == NULL)
{
log_error("no IRP found with FileId = %d", FileId);
return -1;
}
#endif
irp->completion_type = CID_FILE_CLOSE;
irp->DeviceId = device_id;
devredir_fuse_data_enqueue(irp, fusep);
return dev_redir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
device_id,
FileId,
irp->CompletionId,
IRP_MJ_CLOSE,
0, 32);
}
/**
* Remove (delete) a directory or file
*****************************************************************************/
int
devredir_rmdir_or_file(void *fusep, tui32 device_id, const char *path, int mode)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval;
IRP *irp;
if ((irp = devredir_irp_new()) == NULL)
return -1;
irp->CompletionId = g_completion_id++;
irp->completion_type = CID_RMDIR_OR_FILE;
irp->DeviceId = device_id;
strncpy(irp->pathname, path, 255);
devredir_fuse_data_enqueue(irp, fusep);
//DesiredAccess = DA_DELETE | DA_FILE_READ_ATTRIBUTES | DA_SYNCHRONIZE;
DesiredAccess = 0x00100080; /* got this value from windows */
//CreateOptions = CO_FILE_DELETE_ON_CLOSE | CO_FILE_DIRECTORY_FILE |
// CO_FILE_SYNCHRONOUS_IO_NONALERT;
CreateOptions = 0x020; /* got this value from windows */
//CreateDisposition = CD_FILE_OPEN; // WAS 1
CreateDisposition = 0x01; /* got this value from windows */
rval = dev_redir_send_drive_create_request(device_id, path,
DesiredAccess, CreateOptions,
CreateDisposition,
irp->CompletionId);
return rval;
}
/**
* Read data from previously opened file
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
devredir_file_read(void *fusep, tui32 DeviceId, tui32 FileId,
tui32 Length, tui64 Offset)
{
struct stream *s;
IRP *irp;
IRP *new_irp;
int bytes;
xstream_new(s, 1024);
if ((irp = devredir_irp_find_by_fileid(FileId)) == NULL)
{
log_error("no IRP found with FileId = %d", FileId);
xfuse_devredir_cb_read_file(fusep, NULL, 0);
xstream_free(s);
return -1;
}
/* create a new IRP for this request */
if ((new_irp = devredir_irp_clone(irp)) == NULL)
{
/* system out of memory */
xfuse_devredir_cb_read_file(fusep, NULL, 0);
xstream_free(s);
return -1;
}
new_irp->FileId = 0;
new_irp->completion_type = CID_READ;
new_irp->CompletionId = g_completion_id++;
devredir_fuse_data_enqueue(new_irp, fusep);
devredir_insert_DeviceIoRequest(s,
DeviceId,
FileId,
new_irp->CompletionId,
IRP_MJ_READ,
0);
xstream_wr_u32_le(s, Length);
xstream_wr_u64_le(s, Offset);
xstream_seek(s, 20);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
return 0;
}
int
dev_redir_file_write(void *fusep, tui32 DeviceId, tui32 FileId,
const char *buf, int Length, tui64 Offset)
{
struct stream *s;
IRP *irp;
IRP *new_irp;
int bytes;
log_debug("DeviceId=%d FileId=%d Length=%d Offset=%lld",
DeviceId, FileId, Length, (long long)Offset);
xstream_new(s, 1024 + Length);
if ((irp = devredir_irp_find_by_fileid(FileId)) == NULL)
{
log_error("no IRP found with FileId = %d", FileId);
xfuse_devredir_cb_write_file(fusep, NULL, 0);
xstream_free(s);
return -1;
}
/* create a new IRP for this request */
if ((new_irp = devredir_irp_clone(irp)) == NULL)
{
/* system out of memory */
xfuse_devredir_cb_write_file(fusep, NULL, 0);
xstream_free(s);
return -1;
}
new_irp->FileId = 0;
new_irp->completion_type = CID_WRITE;
new_irp->CompletionId = g_completion_id++;
devredir_fuse_data_enqueue(new_irp, fusep);
devredir_insert_DeviceIoRequest(s,
DeviceId,
FileId,
new_irp->CompletionId,
IRP_MJ_WRITE,
0);
xstream_wr_u32_le(s, Length);
xstream_wr_u64_le(s, Offset);
xstream_seek(s, 20); /* padding */
/* now insert real data */
xstream_copyin(s, buf, Length);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
return 0;
}
/******************************************************************************
** FIFO for FUSE_DATA **
******************************************************************************/
/**
* Return FUSE_DATA at the head of the queue without removing it
*
* @return FUSE_DATA on success, or NULL on failure
*****************************************************************************/
FUSE_DATA *
devredir_fuse_data_peek(IRP *irp)
{
log_debug("returning %p", irp->fd_head);
return irp->fd_head;
}
/**
* Return oldest FUSE_DATA from queue
*
* @return FUSE_DATA on success, NULL on failure
*****************************************************************************/
FUSE_DATA *
devredir_fuse_data_dequeue(IRP *irp)
{
FUSE_DATA *head;
if ((irp == NULL) || (irp->fd_head == NULL))
{
log_debug("+++ returning NULL");
return NULL;
}
if (irp->fd_head->next == NULL)
{
/* only one element in queue */
head = irp->fd_head;
irp->fd_head = NULL;
irp->fd_tail = NULL;
log_debug("+++ returning FUSE_DATA=%p containing FUSE_INFO=%p",
head, head->data_ptr);
return head;
}
/* more than one element in queue */
head = irp->fd_head;
irp->fd_head = head->next;
log_debug("+++ returning FUSE_DATA=%p containing FUSE_INFO=%p",
head, head->data_ptr);
return head;
}
/**
* Insert specified FUSE_DATA at the end of our queue
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
devredir_fuse_data_enqueue(IRP *irp, void *vp)
{
FUSE_DATA *fd;
FUSE_DATA *tail;
if (irp == NULL)
return -1;
fd = g_new0(FUSE_DATA, 1);
if (fd == NULL)
return -1;
fd->data_ptr = vp;
fd->next = NULL;
if (irp->fd_tail == NULL)
{
/* queue is empty, insert at head */
irp->fd_head = fd;
irp->fd_tail = fd;
log_debug("+++ inserted FUSE_DATA=%p containing FUSE_INFO=%p at head",
fd, vp);
return 0;
}
/* queue is not empty, insert at tail end */
tail = irp->fd_tail;
tail->next = fd;
irp->fd_tail = fd;
log_debug("+++ inserted FUSE_DATA=%p containing FUSE_INFO=%p at tail",
fd, vp);
return 0;
}
/******************************************************************************
** miscellaneous stuff **
******************************************************************************/
void
devredir_insert_DeviceIoRequest(struct stream *s,
tui32 DeviceId,
tui32 FileId,
tui32 CompletionId,
tui32 MajorFunction,
tui32 MinorFunction)
{
/* setup DR_DEVICE_IOREQUEST header */
xstream_wr_u16_le(s, RDPDR_CTYP_CORE);
xstream_wr_u16_le(s, PAKID_CORE_DEVICE_IOREQUEST);
xstream_wr_u32_le(s, DeviceId);
xstream_wr_u32_le(s, FileId);
xstream_wr_u32_le(s, CompletionId);
xstream_wr_u32_le(s, MajorFunction);
xstream_wr_u32_le(s, MinorFunction);
}
/**
* Convert / to windows compatible \
*****************************************************************************/
void
devredir_cvt_slash(char *path)
{
char *cptr = path;
while (*cptr != 0)
{
if (*cptr == '/')
*cptr = '\\';
cptr++;
}
}
void
devredir_cvt_to_unicode(char *unicode, const char *path)
{
char *dest;
char *src;
int rv;
int i;
rv = g_mbstowcs((twchar *) unicode, path, strlen(path));
/* unicode is typically 4 bytes, but microsoft only uses 2 bytes */
src = unicode + sizeof(twchar); /* skip 1st unicode char */
dest = unicode + 2; /* first char already in place */
for (i = 1; i < rv; i++)
{
*dest++ = *src++;
*dest++ = *src++;
src += 2;
}
*dest++ = 0;
*dest++ = 0;
}
void
devredir_cvt_from_unicode_len(char *path, char *unicode, int len)
{
char *dest;
char *dest_saved;
char *src;
int i;
int bytes_to_alloc;
int max_bytes;
bytes_to_alloc = (((len / 2) * sizeof(twchar)) + sizeof(twchar));
src = unicode;
dest = g_new0(char, bytes_to_alloc);
dest_saved = dest;
for (i = 0; i < len; i += 2)
{
*dest++ = *src++;
*dest++ = *src++;
dest += 2;
}
*dest++ = 0;
*dest++ = 0;
*dest++ = 0;
*dest++ = 0;
max_bytes = wcstombs(NULL, (wchar_t *) dest_saved, 0);
if (max_bytes > 0)
{
wcstombs(path, (wchar_t *) dest_saved, max_bytes);
path[max_bytes] = 0;
}
g_free(dest_saved);
}
int
dev_redir_string_ends_with(char *string, char c)
{
int len;
len = strlen(string);
return (string[len - 1] == c) ? 1 : 0;
}
void
devredir_insert_RDPDR_header(struct stream *s, tui16 Component,
tui16 PacketId)
{
xstream_wr_u16_le(s, Component);
xstream_wr_u16_le(s, PacketId);
}
void
devredir_proc_cid_rmdir_or_file(IRP *irp, tui32 IoStatus)
{
struct stream *s;
int bytes;
if (IoStatus != NT_STATUS_SUCCESS)
{
FUSE_DATA *fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data)
{
xfuse_devredir_cb_rmdir_or_file(fuse_data->data_ptr, IoStatus);
free(fuse_data);
}
devredir_irp_delete(irp);
return;
}
xstream_new(s, 1024);
irp->completion_type = CID_RMDIR_OR_FILE_RESP;
devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
irp->CompletionId,
IRP_MJ_SET_INFORMATION, 0);
xstream_wr_u32_le(s, FileDispositionInformation);
xstream_wr_u32_le(s, 0); /* length is zero */
xstream_seek(s, 24); /* padding */
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
return;
}
void
devredir_proc_cid_rmdir_or_file_resp(IRP *irp, tui32 IoStatus)
{
FUSE_DATA *fuse_data;
fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data)
{
xfuse_devredir_cb_rmdir_or_file(fuse_data->data_ptr, IoStatus);
free(fuse_data);
}
if (IoStatus != NT_STATUS_SUCCESS)
{
devredir_irp_delete(irp);
return;
}
irp->completion_type = CID_CLOSE;
dev_redir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, 0, 32);
}
void
devredir_proc_cid_rename_file(IRP *irp, tui32 IoStatus)
{
struct stream *s;
int bytes;
int sblen; /* SetBuffer length */
int flen; /* FileNameLength */
if (IoStatus != NT_STATUS_SUCCESS)
{
log_debug("rename returned with IoStatus=0x%x", IoStatus);
FUSE_DATA *fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data)
{
xfuse_devredir_cb_rename_file(fuse_data->data_ptr, IoStatus);
free(fuse_data);
}
devredir_irp_delete(irp);
return;
}
/* Path in unicode needs this much space */
flen = ((g_mbstowcs(NULL, irp->gen_buf, 0) * sizeof(twchar)) / 2) + 2;
sblen = 6 + flen;
xstream_new(s, 1024 + flen);
irp->completion_type = CID_RENAME_FILE_RESP;
devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
irp->CompletionId,
IRP_MJ_SET_INFORMATION, 0);
xstream_wr_u32_le(s, FileRenameInformation);
xstream_wr_u32_le(s, sblen); /* number of bytes after padding */
xstream_seek(s, 24); /* padding */
xstream_wr_u8(s, 1); /* ReplaceIfExists */
xstream_wr_u8(s, 0); /* RootDirectory */
xstream_wr_u32_le(s, flen); /* FileNameLength */
/* filename in unicode */
devredir_cvt_to_unicode(s->p, irp->gen_buf); /* UNICODE_TODO */
xstream_seek(s, flen);
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
return;
}
void
devredir_proc_cid_rename_file_resp(IRP *irp, tui32 IoStatus)
{
FUSE_DATA *fuse_data;
log_debug("entered");
fuse_data = devredir_fuse_data_dequeue(irp);
if (fuse_data)
{
xfuse_devredir_cb_rename_file(fuse_data->data_ptr, IoStatus);
free(fuse_data);
}
if (IoStatus != NT_STATUS_SUCCESS)
{
devredir_irp_delete(irp);
return;
}
irp->completion_type = CID_CLOSE;
dev_redir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, 0, 32);
}
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