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xrdp/sesman/chansrv/devredir.c
matt335672 6f881d47d3 Rationalise ms- constants 
Constants from MS documents (MS-RDPBCGR etc) moved out of
common/xrdp_constants.h into includes named after the documents.

Similar includes moved from sesman/chansrv to the common area.
2020-01-06 15:46:37 +00:00

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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"
#include "ms-rdpefs.h"
#include "ms-smb2.h"
#include "ms-fscc.h"
#include "ms-erref.h"
/* module based logging */
#define LOG_ERROR 0
#define LOG_INFO 1
#define LOG_DEBUG 2
#undef LOG_LEVEL
#define LOG_LEVEL LOG_ERROR
#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); \
} \
}
/* client minor versions */
#define RDP_CLIENT_50 0x0002
#define RDP_CLIENT_51 0x0005
#define RDP_CLIENT_52 0x000a
#define RDP_CLIENT_60_61 0x000c
/* Windows time starts on Jan 1, 1601 */
/* Linux time starts on Jan 1, 1970 */
#define EPOCH_DIFF 11644473600LL
#define WINDOWS_TO_LINUX_TIME(_t) (((_t) / 10000000) - EPOCH_DIFF);
#define LINUX_TO_WINDOWS_TIME(_t) (((_t) + EPOCH_DIFF) * 10000000)
/*
* CompletionID types, used in IRPs to indicate I/O operation
*/
enum COMPLETION_TYPE
{
CID_CREATE_DIR_REQ = 1,
CID_DIRECTORY_CONTROL,
CID_CREATE_REQ,
CID_OPEN_REQ,
CID_READ,
CID_WRITE,
CID_CLOSE,
CID_FILE_CLOSE,
CID_RMDIR_OR_FILE,
CID_RMDIR_OR_FILE_RESP,
CID_RENAME_FILE,
CID_RENAME_FILE_RESP,
CID_LOOKUP,
CID_SETATTR
};
/* 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;
/*
* Local functions called from devredir_proc_device_iocompletion()
*/
static void devredir_proc_cid_rmdir_or_file(IRP *irp, enum NTSTATUS IoStatus);
static void devredir_proc_cid_rmdir_or_file_resp(IRP *irp,
enum NTSTATUS IoStatus);
static void devredir_proc_cid_rename_file(IRP *irp, enum NTSTATUS IoStatus);
static void devredir_proc_cid_rename_file_resp(IRP *irp,
enum NTSTATUS IoStatus);
static void devredir_proc_cid_lookup( IRP *irp,
struct stream *s_in,
enum NTSTATUS IoStatus);
static void devredir_proc_cid_setattr( IRP *irp,
struct stream *s_in,
enum NTSTATUS IoStatus);
/* Other local functions */
static void devredir_send_server_core_cap_req(void);
static void devredir_send_server_clientID_confirm(void);
static void devredir_send_server_user_logged_on(void);
static void devredir_proc_client_core_cap_resp(struct stream *s);
static void devredir_proc_client_devlist_announce_req(struct stream *s);
static void devredir_proc_client_devlist_remove_req(struct stream *s);
static void devredir_proc_device_iocompletion(struct stream *s);
static void devredir_proc_query_dir_response(IRP *irp,
struct stream *s_in,
tui32 DeviceId,
tui32 CompletionId,
enum NTSTATUS IoStatus);
static void devredir_cvt_slash(char *path);
static void devredir_cvt_to_unicode(char *unicode, const char *path);
static void devredir_cvt_from_unicode_len(char *path, char *unicode, int len);
static int devredir_string_ends_with(const char *string, char c);
/*****************************************************************************/
int
devredir_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
devredir_deinit(void)
{
scard_deinit();
return 0;
}
/*****************************************************************************/
/*
* Convert a COMPLETION_TYPE to a string
*/
const char *completion_type_to_str(enum COMPLETION_TYPE cid)
{
return
(cid == CID_CREATE_DIR_REQ) ? "CID_CREATE_DIR_REQ" :
(cid == CID_DIRECTORY_CONTROL) ? "CID_DIRECTORY_CONTROL" :
(cid == CID_CREATE_REQ) ? "CID_CREATE_REQ" :
(cid == CID_OPEN_REQ) ? "CID_OPEN_REQ" :
(cid == CID_READ) ? "CID_READ" :
(cid == CID_WRITE) ? "CID_WRITE" :
(cid == CID_CLOSE) ? "CID_CLOSE" :
(cid == CID_FILE_CLOSE) ? "CID_FILE_CLOSE" :
(cid == CID_RMDIR_OR_FILE) ? "CID_RMDIR_OR_FILE" :
(cid == CID_RMDIR_OR_FILE_RESP) ? "CID_RMDIR_OR_FILE_RESP" :
(cid == CID_RENAME_FILE) ? "CID_RENAME_FILE" :
(cid == CID_RENAME_FILE_RESP) ? "CID_RENAME_FILE_RESP" :
(cid == CID_LOOKUP) ? "CID_LOOKUP" :
(cid == CID_SETATTR) ? "CID_SETATTR" :
/* default */ "<unknown>";
};
/*****************************************************************************/
/*
* Convert Windows permssions to Linux permissions.
*
* We can't curently support group or other permissions as separate from the
* owner (not that there's much point). We'll assume our caller will provide
* a umask if appropriate
*/
static tui32
WindowsToLinuxFilePerm(tui32 wperm)
{
tui32 result;
if (wperm & W_FILE_ATTRIBUTE_DIRECTORY)
{
result = S_IFDIR | 0555; /* dirs are always readable and executable */
}
else
{
result = S_IFREG | 0444; /* files are always readable */
if (wperm & W_FILE_ATTRIBUTE_SYSTEM) result |= 0111; /* Executable */
}
if ((wperm & W_FILE_ATTRIBUTE_READONLY) == 0) result |= 0222;
return result;
}
/*****************************************************************************/
static tui32
LinuxToWindowsFilePerm(tui32 lperm)
{
tui32 result = 0;
/* Writeable flag is common to files and directories */
if ((lperm & S_IWUSR) == 0)
{
result |= W_FILE_ATTRIBUTE_READONLY;
}
if (lperm & S_IFDIR)
{
result |= W_FILE_ATTRIBUTE_DIRECTORY;
}
else
{
/* For normal files the system attribute is used to store the owner
executable bit */
if (lperm & S_IXUSR)
{
result |= W_FILE_ATTRIBUTE_SYSTEM;
}
if (result == 0)
{
/* See MS-FSCC section 2.6 */
result = W_FILE_ATTRIBUTE_NORMAL;
}
}
return result;
}
/**
* @brief process incoming data
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
devredir_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 devredir_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 */
devredir_send_server_user_logged_on();
usleep(1000 * 100);
/* let client know our capabilities */
devredir_send_server_core_cap_req();
/* send confirm clientID */
devredir_send_server_clientID_confirm();
break;
case PAKID_CORE_CLIENT_CAPABILITY:
devredir_proc_client_core_cap_resp(ls);
break;
case PAKID_CORE_DEVICELIST_ANNOUNCE:
devredir_proc_client_devlist_announce_req(ls);
break;
case PAKID_CORE_DEVICELIST_REMOVE:
devredir_proc_client_devlist_remove_req(ls);
break;
case PAKID_CORE_DEVICE_IOCOMPLETION:
devredir_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
devredir_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
devredir_check_wait_objs(void)
{
if (g_is_smartcard_redir_supported)
{
return scard_check_wait_objs();
}
return 0;
}
/**
* @brief let client know our capabilities
*****************************************************************************/
static void
devredir_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);
}
static void
devredir_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);
}
static void
devredir_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);
}
static 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
*****************************************************************************/
static int
devredir_send_drive_create_request(tui32 device_id,
const char *path,
tui32 DesiredAccess,
tui32 CreateOptions,
tui32 FileAttributes,
tui32 CreateDisposition,
tui32 completion_id)
{
struct stream *s;
int bytes;
int len;
tui32 SharedAccess;
log_debug("device_id=%d path=\"%s\""
" DesiredAccess=0x%x CreateDisposition=0x%x"
" FileAttributes=0x%x CreateOptions=0x%x"
" CompletionId=%d",
device_id, path,
DesiredAccess, CreateDisposition,
FileAttributes, CreateOptions,
completion_id);
/* path in unicode needs this much space */
len = ((g_mbstowcs(NULL, path, 0) * sizeof(twchar)) / 2) + 2;
xstream_new(s, 1024 + len);
/* FILE_SHARE_DELETE allows files to be renamed while in use
(in some circumstances) */
SharedAccess = SA_FILE_SHARE_READ | SA_FILE_SHARE_WRITE |
SA_FILE_SHARE_DELETE;
devredir_insert_DeviceIoRequest(s,
device_id,
0,
completion_id,
IRP_MJ_CREATE,
IRP_MN_NONE);
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, FileAttributes); /* FileAttributes */
xstream_wr_u32_le(s, SharedAccess); /* SharedAccess */
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 devredir_send_drive_create_request()
*****************************************************************************/
static int
devredir_send_drive_close_request(tui16 Component, tui16 PacketId,
tui32 DeviceId,
tui32 FileId,
tui32 CompletionId,
enum IRP_MJ MajorFunction,
enum IRP_MN 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
static void
devredir_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);
xstream_wr_u32_le(s, FileDirectoryInformation); /* FsInformationClass */
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
*****************************************************************************/
static void
devredir_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;
}
}
static 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;
}
}
}
static void
devredir_proc_client_devlist_remove_req(struct stream *s)
{
unsigned int i;
tui32 device_count;
tui32 device_id;
/* get number of devices being announced */
xstream_rd_u32_le(s, device_count);
log_debug("num of devices removed: %d", device_count);
{
for (i = 0; i < device_count; i++)
{
xstream_rd_u32_le(s, device_id);
xfuse_delete_share(device_id);
}
}
}
static void
devredir_proc_device_iocompletion(struct stream *s)
{
IRP *irp = NULL;
tui32 DeviceId;
tui32 CompletionId;
tui32 IoStatus32;
tui32 Length;
enum COMPLETION_TYPE comp_type;
xstream_rd_u32_le(s, DeviceId);
xstream_rd_u32_le(s, CompletionId);
xstream_rd_u32_le(s, IoStatus32);
enum NTSTATUS IoStatus = (enum NTSTATUS) IoStatus32; /* Needed by C++ */
if ((irp = devredir_irp_find(CompletionId)) == NULL)
{
log_error("IRP with completion ID %d not found", CompletionId);
}
else
if (irp->callback)
{
/* Callback has been set - call it */
(*irp->callback)(s, irp, DeviceId, CompletionId, IoStatus);
}
else
{
comp_type = (enum COMPLETION_TYPE) irp->completion_type;
/* Log something about the IRP */
if (IoStatus == STATUS_SUCCESS ||
IoStatus == STATUS_NO_MORE_FILES ||
(IoStatus == STATUS_NO_SUCH_FILE && comp_type == CID_LOOKUP))
{
/* Successes or common occurrences - debug logging only */
log_debug("got %s", completion_type_to_str(comp_type));
}
else
{
const char *pathname = (irp->pathname) ? irp->pathname : "<none>";
log_error("CompletionType = %s, IoStatus=%08x "
"Pathname = %s",
completion_type_to_str(comp_type),
IoStatus,
pathname);
}
switch (comp_type)
{
case CID_CREATE_DIR_REQ:
if (IoStatus != STATUS_SUCCESS)
{
xfuse_devredir_cb_enum_dir_done(
(struct state_dirscan *) irp->fuse_info, IoStatus);
devredir_irp_delete(irp);
}
else
{
xstream_rd_u32_le(s, irp->FileId);
devredir_send_drive_dir_request(irp, DeviceId,
1, irp->pathname);
}
break;
case CID_CREATE_REQ:
xstream_rd_u32_le(s, irp->FileId);
xfuse_devredir_cb_create_file(
(struct state_create *) irp->fuse_info,
IoStatus, DeviceId, irp->FileId);
if (irp->gen.create.creating_dir || IoStatus != STATUS_SUCCESS)
{
devredir_irp_delete(irp);
}
break;
case CID_OPEN_REQ:
xstream_rd_u32_le(s, irp->FileId);
xfuse_devredir_cb_open_file((struct state_open *) irp->fuse_info,
IoStatus, DeviceId, irp->FileId);
if (IoStatus != STATUS_SUCCESS)
{
devredir_irp_delete(irp);
}
break;
case CID_READ:
xstream_rd_u32_le(s, Length);
xfuse_devredir_cb_read_file((struct state_read *) irp->fuse_info,
s->p, Length);
devredir_irp_delete(irp);
break;
case CID_WRITE:
xstream_rd_u32_le(s, Length);
xfuse_devredir_cb_write_file((struct state_write *) irp->fuse_info,
IoStatus,
irp->gen.write.offset, Length);
devredir_irp_delete(irp);
break;
case CID_CLOSE:
devredir_irp_delete(irp);
break;
case CID_FILE_CLOSE:
xfuse_devredir_cb_file_close((struct state_close *) irp->fuse_info);
devredir_irp_delete(irp);
break;
case CID_DIRECTORY_CONTROL:
devredir_proc_query_dir_response(irp, s, DeviceId,
CompletionId, IoStatus);
break;
case CID_RMDIR_OR_FILE:
xstream_rd_u32_le(s, irp->FileId);
devredir_proc_cid_rmdir_or_file(irp, IoStatus);
break;
case CID_RMDIR_OR_FILE_RESP:
devredir_proc_cid_rmdir_or_file_resp(irp, IoStatus);
break;
case CID_RENAME_FILE:
xstream_rd_u32_le(s, irp->FileId);
devredir_proc_cid_rename_file(irp, IoStatus);
break;
case CID_RENAME_FILE_RESP:
devredir_proc_cid_rename_file_resp(irp, IoStatus);
break;
case CID_LOOKUP:
devredir_proc_cid_lookup(irp, s, IoStatus);
break;
case CID_SETATTR:
devredir_proc_cid_setattr(irp, s, IoStatus);
break;
default:
log_error("got unknown CompletionID: DeviceId=0x%x "
"CompletionId=0x%x IoStatus=0x%x",
DeviceId, CompletionId, IoStatus);
break;
}
}
}
static void
devredir_proc_query_dir_response(IRP *irp,
struct stream *s_in,
tui32 DeviceId,
tui32 CompletionId,
enum NTSTATUS IoStatus)
{
tui32 Length;
xstream_rd_u32_le(s_in, Length);
if (IoStatus == STATUS_SUCCESS)
{
unsigned int i;
/* process FILE_DIRECTORY_INFORMATION structures */
for (i = 0 ; i < Length ; ++i)
{
char filename[256];
tui64 LastAccessTime;
tui64 LastWriteTime;
tui64 EndOfFile;
tui32 FileAttributes;
tui32 FileNameLength;
struct file_attr fattr;
xstream_seek(s_in, 4); /* NextEntryOffset */
xstream_seek(s_in, 4); /* FileIndex */
xstream_seek(s_in, 8); /* 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);
devredir_cvt_from_unicode_len(filename, s_in->p, FileNameLength);
i += 64 + FileNameLength;
//log_debug("LastAccessTime: 0x%llx", LastAccessTime);
//log_debug("LastWriteTime: 0x%llx", LastWriteTime);
//log_debug("EndOfFile: %lld", EndOfFile);
//log_debug("FileAttributes: 0x%x", FileAttributes);
//log_debug("FileNameLength: %d", FileNameLength);
log_debug("FileName: %s", filename);
fattr.mode = WindowsToLinuxFilePerm(FileAttributes);
fattr.size = (size_t) EndOfFile;
fattr.atime = WINDOWS_TO_LINUX_TIME(LastAccessTime);
fattr.mtime = WINDOWS_TO_LINUX_TIME(LastWriteTime);
/* add this entry to xrdp file system */
xfuse_devredir_cb_enum_dir_add_entry(
(struct state_dirscan *) irp->fuse_info,
filename, &fattr);
}
/* Ask for more directory entries */
devredir_send_drive_dir_request(irp, DeviceId, 0, NULL);
}
else
{
if (IoStatus == STATUS_NO_MORE_FILES)
{
IoStatus = STATUS_SUCCESS;
}
xfuse_devredir_cb_enum_dir_done((struct state_dirscan *)irp->fuse_info,
IoStatus);
irp->completion_type = CID_CLOSE;
devredir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, IRP_MN_NONE, 32);
}
}
/**
* 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
devredir_get_dir_listing(struct state_dirscan *fusep, tui32 device_id,
const char *path)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
/*
* We need to be able to append two additional characters to the
* path after we create the IRP
*/
if ((irp = devredir_irp_with_pathnamelen_new(strlen(path) + 2)) != NULL)
{
/* convert / to windows compatible \ */
strcpy(irp->pathname, path);
devredir_cvt_slash(irp->pathname);
irp->CompletionId = g_completion_id++;
irp->completion_type = CID_CREATE_DIR_REQ;
irp->DeviceId = device_id;
irp->fuse_info = fusep;
DesiredAccess = DA_FILE_READ_DATA | DA_SYNCHRONIZE;
CreateOptions = CO_FILE_DIRECTORY_FILE |
CO_FILE_SYNCHRONOUS_IO_NONALERT;
CreateDisposition = CD_FILE_OPEN;
rval = devredir_send_drive_create_request(device_id, irp->pathname,
DesiredAccess, CreateOptions,
0, CreateDisposition,
irp->CompletionId);
log_debug("looking for device_id=%d path=%s", device_id, irp->pathname);
/* when we get a response to devredir_send_drive_create_request(), we
* call devredir_send_drive_dir_request(), which needs the following
* at the end of the path argument */
if (devredir_string_ends_with(irp->pathname, '\\'))
{
strcat(irp->pathname, "*");
}
else
{
strcat(irp->pathname, "\\*");
}
}
return rval;
}
/**
* FUSE calls this function whenever it wants us to lookup a file or directory
*
* @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 name of the directory containing the file
* @param file the filename
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
devredir_lookup_entry(struct state_lookup *fusep, tui32 device_id,
const char *path)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
log_debug("fusep=%p", fusep);
if ((irp = devredir_irp_with_pathname_new(path)) != NULL)
{
/* convert / to windows compatible \ */
devredir_cvt_slash(irp->pathname);
/*
* Allocate an IRP to open the file, read the basic attributes,
* read the standard attributes, and then close the file
*/
irp->CompletionId = g_completion_id++;
irp->completion_type = CID_LOOKUP;
irp->DeviceId = device_id;
irp->gen.lookup.state = E_LOOKUP_GET_FH;
irp->fuse_info = fusep;
DesiredAccess = DA_FILE_READ_ATTRIBUTES | DA_SYNCHRONIZE;
CreateOptions = 0;
CreateDisposition = CD_FILE_OPEN;
log_debug("lookup for device_id=%d path=%s CompletionId=%d",
device_id, irp->pathname, irp->CompletionId);
rval = devredir_send_drive_create_request(device_id,
irp->pathname,
DesiredAccess, CreateOptions,
0, CreateDisposition,
irp->CompletionId);
}
return rval;
}
/**
* FUSE calls this function whenever it wants us to set the attributes for
* a file or directory.
*
* @param fusep opaque data struct that we just pass back to FUSE when done
* @param device_id device_id of the redirected share
* @param filename the name of the file
* @param fattr the file attributes to set for the file
* @param to_set Which bits of the file attributes have changed
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
devredir_setattr_for_entry(struct state_setattr *fusep, tui32 device_id,
const char *filename,
const struct file_attr *fattr,
tui32 to_set)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
log_debug("fusep=%p", fusep);
if ((irp = devredir_irp_with_pathname_new(filename)) != NULL)
{
/* convert / to windows compatible \ */
devredir_cvt_slash(irp->pathname);
/*
* Allocate an IRP to open the file, update the attributes
* and close the file.
*/
irp->CompletionId = g_completion_id++;
irp->completion_type = CID_SETATTR;
irp->DeviceId = device_id;
irp->fuse_info = fusep;
irp->gen.setattr.state = E_SETATTR_GET_FH;
irp->gen.setattr.to_set = to_set;
irp->gen.setattr.fattr = *fattr;
/*
* Don't set DA_FILE_WRITE_DATA unless we're changing the
* EndOfFile pointer. Otherwise we can't change the attributes
* of read-only files! */
DesiredAccess = DA_FILE_WRITE_ATTRIBUTES;
if (to_set & TO_SET_SIZE)
{
DesiredAccess |= DA_FILE_WRITE_DATA;
}
CreateOptions = 0;
CreateDisposition = CD_FILE_OPEN;
log_debug("lookup for device_id=%d path=%s",
device_id, irp->pathname);
rval = devredir_send_drive_create_request(device_id,
irp->pathname,
DesiredAccess, CreateOptions,
0, CreateDisposition,
irp->CompletionId);
}
return rval;
}
int
devredir_file_create(struct state_create *fusep, tui32 device_id,
const char *path, int mode)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 FileAttributes = 0;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
log_debug("device_id=%d path=%s mode=0%o", device_id, path, mode);
if ((irp = devredir_irp_with_pathname_new(path)) != NULL)
{
/* convert / to windows compatible \ */
devredir_cvt_slash(irp->pathname);
irp->completion_type = CID_CREATE_REQ;
irp->CompletionId = g_completion_id++;
irp->DeviceId = device_id;
irp->fuse_info = fusep;
DesiredAccess = 0x0016019f; /* got this value from windows */
FileAttributes = LinuxToWindowsFilePerm(mode);
if (mode & S_IFDIR)
{
log_debug("creating dir");
CreateOptions = CO_FILE_DIRECTORY_FILE | CO_FILE_SYNCHRONOUS_IO_NONALERT;
irp->gen.create.creating_dir = 1;
}
else
{
log_debug("creating file");
CreateOptions = 0x44; /* got this value from windows */
irp->gen.create.creating_dir = 0;
}
//CreateDisposition = CD_FILE_CREATE;
CreateDisposition = 0x02; /* got this value from windows */
rval = devredir_send_drive_create_request(device_id, path,
DesiredAccess, CreateOptions,
FileAttributes,
CreateDisposition,
irp->CompletionId);
}
return rval;
}
int
devredir_file_open(struct state_open *fusep, tui32 device_id,
const char *path, int flags)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 FileAttributes = 0;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
log_debug("device_id=%d path=%s flags=0%x",
device_id, path, flags);
if ((irp = devredir_irp_with_pathname_new(path)) != NULL)
{
/* convert / to windows compatible \ */
devredir_cvt_slash(irp->pathname);
irp->completion_type = CID_OPEN_REQ;
irp->CompletionId = g_completion_id++;
irp->DeviceId = device_id;
irp->fuse_info = fusep;
switch(flags & O_ACCMODE)
{
case O_RDONLY:
log_debug("open file in O_RDONLY");
DesiredAccess = DA_FILE_READ_DATA | DA_SYNCHRONIZE;
break;
case O_WRONLY:
log_debug("open file in O_WRONLY");
DesiredAccess = DA_FILE_WRITE_DATA | DA_SYNCHRONIZE;
break;
default:
/*
* The access mode could conceivably be invalid here,
* but we assume this has been checked by the caller
*/
log_debug("open file in O_RDWR");
/* without the 0x00000010 rdesktop opens files in */
/* O_RDONLY instead of O_RDWR mode */
DesiredAccess = DA_FILE_READ_DATA | DA_FILE_WRITE_DATA |
DA_SYNCHRONIZE | 0x00000010;
}
CreateOptions = CO_FILE_SYNCHRONOUS_IO_NONALERT;
CreateDisposition = CD_FILE_OPEN; // WAS 1
rval = devredir_send_drive_create_request(device_id, path,
DesiredAccess, CreateOptions,
FileAttributes,
CreateDisposition,
irp->CompletionId);
}
return rval;
}
int devredir_file_close(struct state_close *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;
irp->fuse_info = fusep;
return devredir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
device_id,
FileId,
irp->CompletionId,
IRP_MJ_CLOSE,
IRP_MN_NONE, 32);
}
/**
* Remove (delete) a directory or file
*****************************************************************************/
int
devredir_rmdir_or_file(struct state_remove *fusep, tui32 device_id,
const char *path)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
if ((irp = devredir_irp_with_pathname_new(path)) != NULL)
{
/* convert / to windows compatible \ */
devredir_cvt_slash(irp->pathname);
irp->CompletionId = g_completion_id++;
irp->completion_type = CID_RMDIR_OR_FILE;
irp->DeviceId = device_id;
irp->fuse_info = 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 = devredir_send_drive_create_request(device_id, path,
DesiredAccess, CreateOptions,
0, CreateDisposition,
irp->CompletionId);
}
return rval;
}
/**
* Read data from previously opened file
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int
devredir_file_read(struct state_read *fusep, tui32 DeviceId, tui32 FileId,
tui32 Length, tui64 Offset)
{
struct stream *s;
IRP *irp;
IRP *new_irp;
int bytes;
int rval = -1;
xstream_new(s, 1024);
/* Check we've got an open IRP for this file already */
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);
}
/* create a new IRP for this request */
else if ((new_irp = devredir_irp_new()) == NULL)
{
/* system out of memory */
xfuse_devredir_cb_read_file(fusep, NULL, 0);
xstream_free(s);
}
else
{
new_irp->DeviceId = DeviceId;
new_irp->FileId = FileId;
new_irp->completion_type = CID_READ;
new_irp->CompletionId = g_completion_id++;
new_irp->fuse_info = fusep;
devredir_insert_DeviceIoRequest(s,
DeviceId,
FileId,
new_irp->CompletionId,
IRP_MJ_READ,
IRP_MN_NONE);
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);
rval = 0;
}
return rval;
}
int
devredir_file_write(struct state_write *fusep, tui32 DeviceId, tui32 FileId,
const char *buf, int Length, tui64 Offset)
{
struct stream *s;
IRP *irp;
IRP *new_irp;
int bytes;
int rval = -1;
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, STATUS_UNSUCCESSFUL, 0, 0);
xstream_free(s);
}
/* create a new IRP for this request */
else if ((new_irp = devredir_irp_new()) == NULL)
{
/* system out of memory */
xfuse_devredir_cb_write_file(fusep, STATUS_UNSUCCESSFUL, 0, 0);
xstream_free(s);
}
else
{
new_irp->DeviceId = DeviceId;
new_irp->FileId = FileId;
new_irp->completion_type = CID_WRITE;
new_irp->CompletionId = g_completion_id++;
new_irp->fuse_info = fusep;
/* Offset needed after write to calculate new EOF */
new_irp->gen.write.offset = Offset;
devredir_insert_DeviceIoRequest(s,
DeviceId,
FileId,
new_irp->CompletionId,
IRP_MJ_WRITE,
IRP_MN_NONE);
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);
rval = 0;
}
return rval;
}
int devredir_file_rename(struct state_rename *fusep, tui32 device_id,
const char *old_name,
const char *new_name)
{
tui32 DesiredAccess;
tui32 CreateOptions;
tui32 FileAttributes = 0;
tui32 CreateDisposition;
int rval = -1;
IRP *irp;
unsigned int len;
log_debug("device_id=%d old_name=%s new_name=%s",
device_id, old_name, new_name);
/*
* Allocate an IRP with enough space for both the old and new names.
* We'll store the new name after the old name:-
*
* | n | a | m | e | 1 | \0 | n | a | m | e | 2 | \0 |
* ^ ^
* irp->pathname ----+ |
* irp->gen.rename.new_name ------------------+
*/
len = strlen(old_name) + 1 + strlen(new_name);
if ((irp = devredir_irp_with_pathnamelen_new(len)) != NULL)
{
/* Set up pointer to new name string */
irp->gen.rename.new_name = irp->pathname + strlen(old_name) + 1;
/* Copy both strings, and change'/' to '\\' characters */
strcpy(irp->pathname, old_name);
devredir_cvt_slash(irp->pathname);
strcpy(irp->gen.rename.new_name, new_name);
devredir_cvt_slash(irp->gen.rename.new_name);
irp->completion_type = CID_RENAME_FILE;
irp->CompletionId = g_completion_id++;
irp->DeviceId = device_id;
irp->fuse_info = fusep;
DesiredAccess = DA_FILE_WRITE_ATTRIBUTES | DA_DELETE;
CreateOptions = 0;
CreateDisposition = CD_FILE_OPEN; // WAS 1
rval = devredir_send_drive_create_request(device_id, old_name,
DesiredAccess, CreateOptions,
FileAttributes,
CreateDisposition,
irp->CompletionId);
}
return rval;
}
/******************************************************************************
** miscellaneous stuff **
******************************************************************************/
void
devredir_insert_DeviceIoRequest(struct stream *s,
tui32 DeviceId,
tui32 FileId,
tui32 CompletionId,
enum IRP_MJ MajorFunction,
enum IRP_MN 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 \
*****************************************************************************/
static void
devredir_cvt_slash(char *path)
{
char *cptr = path;
while (*cptr != 0)
{
if (*cptr == '/')
*cptr = '\\';
cptr++;
}
}
static 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;
}
static 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);
}
static int
devredir_string_ends_with(const char *string, char c)
{
size_t len;
len = strlen(string);
return (len > 0 && string[len - 1] == c) ? 1 : 0;
}
static void
devredir_proc_cid_rmdir_or_file(IRP *irp, enum NTSTATUS IoStatus)
{
struct stream *s;
int bytes;
if (IoStatus != STATUS_SUCCESS)
{
xfuse_devredir_cb_rmdir_or_file((struct state_remove *) irp->fuse_info,
IoStatus);
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, IRP_MN_NONE);
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;
}
static void
devredir_proc_cid_rmdir_or_file_resp(IRP *irp, enum NTSTATUS IoStatus)
{
xfuse_devredir_cb_rmdir_or_file((struct state_remove *)irp->fuse_info,
IoStatus);
if (IoStatus != STATUS_SUCCESS)
{
devredir_irp_delete(irp);
return;
}
irp->completion_type = CID_CLOSE;
devredir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, IRP_MN_NONE, 32);
}
static void
devredir_proc_cid_rename_file(IRP *irp, enum NTSTATUS IoStatus)
{
struct stream *s;
int bytes;
int sblen; /* SetBuffer length */
int flen; /* FileNameLength */
if (IoStatus != STATUS_SUCCESS)
{
log_debug("rename returned with IoStatus=0x%x", IoStatus);
xfuse_devredir_cb_rename_file((struct state_rename *)irp->fuse_info,
IoStatus);
devredir_irp_delete(irp);
return;
}
/* Path in unicode needs this much space */
flen = ((g_mbstowcs(NULL, irp->gen.rename.new_name, 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, IRP_MN_NONE);
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.rename.new_name); /* 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;
}
static void
devredir_proc_cid_rename_file_resp(IRP *irp, enum NTSTATUS IoStatus)
{
log_debug("entered");
xfuse_devredir_cb_rename_file((struct state_rename *)irp->fuse_info,
IoStatus);
if (IoStatus != STATUS_SUCCESS)
{
devredir_irp_delete(irp);
return;
}
irp->completion_type = CID_CLOSE;
devredir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, IRP_MN_NONE, 32);
}
/*
* Re-uses the specified IRP to issue a request to get file attributes
* of varying types
*
* References : [MS-RDPEFS] 2.2.3.3.9 [MS-FSCC] 2.4
*****************************************************************************/
static void issue_lookup(IRP *irp, int lookup_type)
{
struct stream *s;
int bytes;
bytes =
lookup_type == FileBasicInformation ? FILE_BASIC_INFORMATION_SIZE :
lookup_type == FileStandardInformation ? FILE_STD_INFORMATION_SIZE :
0;
xstream_new(s, 1024);
devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
irp->CompletionId,
IRP_MJ_QUERY_INFORMATION, IRP_MN_NONE);
xstream_wr_u32_le(s, lookup_type);
xstream_wr_u32_le(s, bytes); /* buffer length */
xstream_seek(s, 24); /* padding */
xstream_seek(s, bytes); /* buffer */
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/*
* Parses an incoming FileBasicInformation structure
*****************************************************************************/
static void lookup_read_basic_attributes(IRP *irp, struct stream *s_in)
{
tui64 LastAccessTime;
tui64 LastWriteTime;
tui32 FileAttributes;
log_debug("processing FILE_BASIC_INFORMATION");
xstream_seek(s_in, 8); /* CreationTime */
xstream_rd_u64_le(s_in, LastAccessTime);
xstream_rd_u64_le(s_in, LastWriteTime);
xstream_seek(s_in, 8); /* ChangeTime */
xstream_rd_u32_le(s_in, FileAttributes);
//log_debug("LastAccessTime: 0x%llx",
// (unsigned long long)LastAccessTime);
//log_debug("LastWriteTime: 0x%llx",
// (unsigned long long)LastWriteTime);
//log_debug("ChangeTime: 0x%llx",
// (unsigned long long)ChangeTime);
//log_debug("FileAttributes: 0x%x", (unsigned int)FileAttributes);
/* Save the basic attributes in the IRP */
irp->gen.lookup.fattr.mode = WindowsToLinuxFilePerm(FileAttributes);
irp->gen.lookup.fattr.atime = WINDOWS_TO_LINUX_TIME(LastAccessTime);
irp->gen.lookup.fattr.mtime = WINDOWS_TO_LINUX_TIME(LastWriteTime);
}
/*
* Parses an incoming FileStandardInformation structure
*****************************************************************************/
static void lookup_read_standard_attributes(IRP *irp, struct stream *s_in)
{
tui64 EndOfFile;
log_debug("processing FILE_STD_INFORMATION");
xstream_seek(s_in, 8); /* AllocationSize */
xstream_rd_u64_le(s_in, EndOfFile);
//log_debug("EndOfFile: %lld",
// (unsigned long long)EndOfFile);
irp->gen.lookup.fattr.size = EndOfFile;
}
/*
* Completes a lookup request and returns status to the caller.
*
* Unless IoStatus is STATUS_SUCCESS, the lookup has failed.
*****************************************************************************/
static void lookup_done(IRP *irp, enum NTSTATUS IoStatus)
{
log_debug("Lookup with completion_id=%d returning 0x%x",
irp->CompletionId, IoStatus);
xfuse_devredir_cb_lookup_entry((struct state_lookup *)irp->fuse_info,
IoStatus,
&irp->gen.lookup.fattr);
if (irp->FileId == 0)
{
/* Open failed - no file handle */
devredir_irp_delete(irp);
}
else
{
/* Close the file handle */
irp->completion_type = CID_CLOSE;
devredir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, IRP_MN_NONE, 32);
}
}
/*
* lookup has a mini state machine built-in, as it needs to issue
* multiple I/O requests, but unlike lookup these are not always the same.
*/
static void
devredir_proc_cid_lookup(IRP *irp,
struct stream *s_in,
enum NTSTATUS IoStatus)
{
tui32 Length;
log_debug("entry state is %d",irp->gen.lookup.state);
if (IoStatus != STATUS_SUCCESS)
{
/* This is common to all setattr states */
log_debug("last lookup returned with IoStatus=0x%08x", IoStatus);
lookup_done(irp, IoStatus);
}
else
{
/* Read and validate any data we've got queued up */
switch(irp->gen.lookup.state)
{
case E_LOOKUP_GET_FH:
/* We've been sent the file ID */
xstream_rd_u32_le(s_in, irp->FileId);
issue_lookup(irp, FileBasicInformation);
irp->gen.lookup.state = E_LOOKUP_CHECK_BASIC;
break;
case E_LOOKUP_CHECK_BASIC:
/* Returned length what we expected? */
xstream_rd_u32_le(s_in, Length);
if (Length != FILE_BASIC_INFORMATION_SIZE)
{
log_error("Expected FILE_BASIC_INFORMATION length"
"%d, got len=%d",
FILE_BASIC_INFORMATION_SIZE, Length);
IoStatus = STATUS_UNSUCCESSFUL;
lookup_done(irp, IoStatus);
}
else
{
lookup_read_basic_attributes(irp, s_in);
issue_lookup(irp, FileStandardInformation);
irp->gen.lookup.state = E_LOOKUP_CHECK_EOF;
}
break;
case E_LOOKUP_CHECK_EOF:
/* Returned length what we expected? */
xstream_rd_u32_le(s_in, Length);
if (Length != FILE_STD_INFORMATION_SIZE)
{
log_error("Expected FILE_STD_INFORMATION length"
"%d, got len=%d",
FILE_STD_INFORMATION_SIZE, Length);
IoStatus = STATUS_UNSUCCESSFUL;
}
else
{
lookup_read_standard_attributes(irp, s_in);
}
lookup_done(irp, IoStatus);
break;
}
}
}
/*
* Re-uses the specified IRP to issue a request to set basic file attributes
*
* References : [MS-RDPEFS] 2.2.3.3.9 [MS-FSCC] 2.4.7
*****************************************************************************/
static void issue_setattr_basic(IRP *irp)
{
struct stream *s;
int bytes;
const struct file_attr *fattr = &irp->gen.setattr.fattr;
tui32 to_set = irp->gen.setattr.to_set;
tui32 FileAttributes = 0;
tui64 atime = 0;
tui64 mtime = 0;
if (to_set & TO_SET_MODE)
{
FileAttributes = LinuxToWindowsFilePerm(fattr->mode);
}
if (to_set & TO_SET_ATIME)
{
atime = LINUX_TO_WINDOWS_TIME(fattr->atime);
}
if (to_set & TO_SET_MTIME)
{
mtime = LINUX_TO_WINDOWS_TIME(fattr->mtime);
}
xstream_new(s, 1024);
devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
irp->CompletionId,
IRP_MJ_SET_INFORMATION, IRP_MN_NONE);
xstream_wr_u32_le(s, FileBasicInformation);
xstream_wr_u32_le(s, FILE_BASIC_INFORMATION_SIZE);
/* buffer length */
xstream_seek(s, 24); /* padding */
xstream_wr_u64_le(s, 0LL); /* CreationTime */
xstream_wr_u64_le(s, atime); /* LastAccessTime */
xstream_wr_u64_le(s, mtime); /* LastWriteTime */
xstream_wr_u64_le(s, 0LL); /* ChangeTime */
xstream_wr_u32_le(s, FileAttributes); /* FileAttributes */
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/*
* Re-uses the specified IRP to issue a request to set file EOF
*
* References : [MS-RDPEFS] 2.2.3.3.9 [MS-FSCC] 2.4.13
*****************************************************************************/
static void issue_setattr_eof(IRP *irp)
{
struct stream *s;
int bytes;
xstream_new(s, 1024);
devredir_insert_DeviceIoRequest(s, irp->DeviceId, irp->FileId,
irp->CompletionId,
IRP_MJ_SET_INFORMATION, IRP_MN_NONE);
xstream_wr_u32_le(s, FileEndOfFileInformation);
xstream_wr_u32_le(s, FILE_END_OF_FILE_INFORMATION_SIZE);
/* buffer length */
xstream_seek(s, 24); /* padding */
xstream_wr_u64_le(s, (tui64)irp->gen.setattr.fattr.size);
/* File size */
/* send to client */
bytes = xstream_len(s);
send_channel_data(g_rdpdr_chan_id, s->data, bytes);
xstream_free(s);
}
/*
* Completes a setattr request and returns status to the caller.
*****************************************************************************/
static void setattr_done(IRP *irp, enum NTSTATUS IoStatus)
{
xfuse_devredir_cb_setattr((struct state_setattr *) irp->fuse_info,
IoStatus);
if (irp->FileId == 0)
{
/* Open failed - no file handle */
devredir_irp_delete(irp);
}
else
{
/* Close the file handle */
irp->completion_type = CID_CLOSE;
devredir_send_drive_close_request(RDPDR_CTYP_CORE,
PAKID_CORE_DEVICE_IOREQUEST,
irp->DeviceId,
irp->FileId,
irp->CompletionId,
IRP_MJ_CLOSE, IRP_MN_NONE, 32);
}
}
/*
* setattr has a mini state machine built-in, as it needs to issue
* multiple I/O requests, but unlike lookup these are not always the same.
*/
static void
devredir_proc_cid_setattr(IRP *irp,
struct stream *s_in,
enum NTSTATUS IoStatus)
{
#define TO_SET_BASIC_ATTRS (TO_SET_MODE | \
TO_SET_ATIME | TO_SET_MTIME)
tui32 Length;
log_debug("entry state is %d",irp->gen.setattr.state);
if (IoStatus != STATUS_SUCCESS)
{
/* This is common to all setattr states */
log_debug("last setattr returned with IoStatus=0x%08x", IoStatus);
setattr_done(irp, IoStatus);
}
else
{
/* Read and validate any data we've got queued up */
switch(irp->gen.setattr.state)
{
case E_SETATTR_GET_FH:
/* We've been sent the file ID */
xstream_rd_u32_le(s_in, irp->FileId);
break;
case E_SETATTR_CHECK_BASIC:
/* Returned length what we expected? */
xstream_rd_u32_le(s_in, Length);
if (Length != FILE_BASIC_INFORMATION_SIZE)
{
log_error("Expected FILE_BASIC_INFORMATION length"
"%d, got len=%d",
FILE_BASIC_INFORMATION_SIZE, Length);
}
/* Clear the basic bits so we don't end up in here again */
irp->gen.setattr.to_set &= ~TO_SET_BASIC_ATTRS;
break;
case E_SETATTR_CHECK_EOF:
/* Returned length what we expected? */
xstream_rd_u32_le(s_in, Length);
if (Length != FILE_END_OF_FILE_INFORMATION_SIZE)
{
log_error("Expected FILE_END_OF_FILE_INFORMATION length"
"%d, got len=%d",
FILE_END_OF_FILE_INFORMATION_SIZE, Length);
}
/* Clear the size bits so we don't end up in here again */
irp->gen.setattr.to_set &= ~TO_SET_SIZE;
break;
}
/* Work out the next call to issue */
if (irp->gen.setattr.to_set & TO_SET_BASIC_ATTRS)
{
issue_setattr_basic(irp);
irp->gen.setattr.state = E_SETATTR_CHECK_BASIC;
}
else if (irp->gen.setattr.to_set & TO_SET_SIZE)
{
issue_setattr_eof(irp);
irp->gen.setattr.state = E_SETATTR_CHECK_EOF;
}
else
{
setattr_done(irp, IoStatus);
}
}
#undef TO_SET_BASIC_ATTRS
}
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