Fix message ordering in devredir
The drive redirector is not compliant with the message ordering in [MS-RDPEFS], causing FreeRDP 2.11.2 ro fail on redirecting drives.
This commit is contained in:
matt335672
parent
ee328784dc
commit
7ceff70c1c
@ -119,5 +119,10 @@ enum IRP_MN
|
||||
IRP_MN_NOTIFY_CHANGE_DIRECTORY = 0x00000002
|
||||
};
|
||||
|
||||
/*
|
||||
* General Capability Set (2.2.2.7.1)
|
||||
*/
|
||||
/* extendedPDU fields */
|
||||
#define RDPDR_USER_LOGGEDON_PDU 0x00000004
|
||||
|
||||
#endif /* MS_RDPEFS_H */
|
||||
|
||||
@ -98,11 +98,20 @@ enum COMPLETION_TYPE
|
||||
|
||||
/* 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;
|
||||
|
||||
/* Capabilities from GENERAL_CAPS_SET in Client Core Capability Response */
|
||||
struct client_caps
|
||||
{
|
||||
tui32 extended_pdu;
|
||||
int printer_redir_supported;
|
||||
int port_redir_supported;
|
||||
int drive_redir_supported;
|
||||
int smartcard_redir_supported;
|
||||
unsigned int drive_redir_version;
|
||||
};
|
||||
|
||||
static struct client_caps g_ccap;
|
||||
|
||||
tui32 g_completion_id = 1;
|
||||
|
||||
tui32 g_clientID; /* unique client ID - announced by client */
|
||||
@ -370,19 +379,18 @@ devredir_data_in(struct stream *s, int chan_id, int chan_flags, int length,
|
||||
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);
|
||||
|
||||
/* See 3.3.5.1.6 for sequencing rules */
|
||||
if (g_client_rdp_version >= RDP_CLIENT_51)
|
||||
{
|
||||
/* let client know our capabilities */
|
||||
devredir_send_server_core_cap_req();
|
||||
}
|
||||
|
||||
/* send confirm clientID */
|
||||
devredir_send_server_clientID_confirm();
|
||||
@ -390,6 +398,19 @@ devredir_data_in(struct stream *s, int chan_id, int chan_flags, int length,
|
||||
|
||||
case PAKID_CORE_CLIENT_CAPABILITY:
|
||||
rv = devredir_proc_client_core_cap_resp(ls);
|
||||
if (rv == 0)
|
||||
{
|
||||
if ((g_ccap.extended_pdu & RDPDR_USER_LOGGEDON_PDU) != 0)
|
||||
{
|
||||
/* Tell client to announce remaining devices */
|
||||
devredir_send_server_user_logged_on();
|
||||
}
|
||||
else if (g_client_rdp_version >= RDP_CLIENT_51)
|
||||
{
|
||||
/* See 3.3.5.1.7 */
|
||||
devredir_send_server_clientID_confirm();
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case PAKID_CORE_DEVICELIST_ANNOUNCE:
|
||||
@ -424,7 +445,7 @@ done:
|
||||
int
|
||||
devredir_get_wait_objs(tbus *objs, int *count, int *timeout)
|
||||
{
|
||||
if (g_is_smartcard_redir_supported)
|
||||
if (g_ccap.smartcard_redir_supported)
|
||||
{
|
||||
return scard_get_wait_objs(objs, count, timeout);
|
||||
}
|
||||
@ -435,7 +456,7 @@ devredir_get_wait_objs(tbus *objs, int *count, int *timeout)
|
||||
int
|
||||
devredir_check_wait_objs(void)
|
||||
{
|
||||
if (g_is_smartcard_redir_supported)
|
||||
if (g_ccap.smartcard_redir_supported)
|
||||
{
|
||||
return scard_check_wait_objs();
|
||||
}
|
||||
@ -734,6 +755,47 @@ devredir_send_drive_dir_request(IRP *irp, tui32 device_id,
|
||||
** process data received from client **
|
||||
******************************************************************************/
|
||||
|
||||
/**
|
||||
* Process a GENERAL_CAPS_SET packet from the client
|
||||
* @param s Stream. CAPABILITY_HEADER is already read
|
||||
* @param cap_len Amount of data left in stream for the packet
|
||||
* @return 0 for success, -1 otherwise
|
||||
*
|
||||
* Caller is responsible for skipping unused data from this
|
||||
* capability in the input stream.
|
||||
*/
|
||||
static int
|
||||
process_client_general_caps_set(struct stream *s, unsigned int cap_len,
|
||||
struct client_caps *ccap)
|
||||
{
|
||||
int rv = -1;
|
||||
|
||||
// Data we don't check at the start of the packet
|
||||
#define PACKET_SKIP_LENGTH ( \
|
||||
4 + /* osType */ \
|
||||
4 + /* osVersion */ \
|
||||
2 + /* protocolMajorVersion */ \
|
||||
2 + /* protocolMinorVersion */ \
|
||||
4 + /* ioCode1 */ \
|
||||
4) /* ioCode2 */
|
||||
|
||||
if (cap_len < (PACKET_SKIP_LENGTH + 4))
|
||||
{
|
||||
LOG(LOG_LEVEL_ERROR,
|
||||
"[MS-RDPEFS] GENERAL_CAPS_SET: Short packet (%u bytes) encountered",
|
||||
cap_len);
|
||||
}
|
||||
else
|
||||
{
|
||||
xstream_seek(s, PACKET_SKIP_LENGTH);
|
||||
xstream_rd_u32_le(s, ccap->extended_pdu);
|
||||
rv = 0;
|
||||
}
|
||||
|
||||
return rv;
|
||||
#undef PACKET_SKIP_LENGTH
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief process client's response to our core_capability_req() msg
|
||||
*
|
||||
@ -743,12 +805,16 @@ devredir_send_drive_dir_request(IRP *irp, tui32 device_id,
|
||||
static int
|
||||
devredir_proc_client_core_cap_resp(struct stream *s)
|
||||
{
|
||||
#define CAPABILITY_HEADER_LEN 8
|
||||
int i;
|
||||
tui16 num_caps;
|
||||
tui16 cap_type;
|
||||
tui16 cap_len;
|
||||
tui32 cap_version;
|
||||
char *holdp;
|
||||
|
||||
// Reset to defaults
|
||||
memset(&g_ccap, 0, sizeof(g_ccap));
|
||||
g_ccap.drive_redir_version = 1;
|
||||
|
||||
if (!s_check_rem_and_log(s, 4, "Parsing [MS-RDPEFS] DR_CORE_CAPABLITY_RSP"))
|
||||
{
|
||||
@ -759,8 +825,8 @@ devredir_proc_client_core_cap_resp(struct stream *s)
|
||||
|
||||
for (i = 0; i < num_caps; i++)
|
||||
{
|
||||
holdp = s->p;
|
||||
if (!s_check_rem_and_log(s, 8, "Parsing [MS-RDPEFS] CAPABILITY_HEADER"))
|
||||
if (!s_check_rem_and_log(s, CAPABILITY_HEADER_LEN,
|
||||
"Parsing [MS-RDPEFS] CAPABILITY_HEADER"))
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
@ -769,46 +835,55 @@ devredir_proc_client_core_cap_resp(struct stream *s)
|
||||
xstream_rd_u32_le(s, cap_version);
|
||||
/* Convert the length to a remaining length. Underflow is possible,
|
||||
* but this is an unsigned type so that's OK */
|
||||
cap_len -= (s->p - holdp);
|
||||
if (cap_len > 0 &&
|
||||
!s_check_rem_and_log(s, cap_len, "Parsing [MS-RDPEFS] CAPABILITY_HEADER length"))
|
||||
cap_len -= CAPABILITY_HEADER_LEN;
|
||||
if (!s_check_rem_and_log(s, cap_len,
|
||||
"Parsing [MS-RDPEFS] CAPABILITY_HEADER data"))
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Save our stream position. iso_hdr is otherwise
|
||||
// unused in this stream
|
||||
s_push_layer(s, iso_hdr, 0);
|
||||
switch (cap_type)
|
||||
{
|
||||
case CAP_GENERAL_TYPE:
|
||||
LOG_DEVEL(LOG_LEVEL_DEBUG, "got CAP_GENERAL_TYPE");
|
||||
if (process_client_general_caps_set(s, cap_len, &g_ccap) < 0)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
|
||||
case CAP_PRINTER_TYPE:
|
||||
LOG_DEVEL(LOG_LEVEL_DEBUG, "got CAP_PRINTER_TYPE");
|
||||
g_is_printer_redir_supported = 1;
|
||||
g_ccap.printer_redir_supported = 1;
|
||||
break;
|
||||
|
||||
case CAP_PORT_TYPE:
|
||||
LOG_DEVEL(LOG_LEVEL_DEBUG, "got CAP_PORT_TYPE");
|
||||
g_is_port_redir_supported = 1;
|
||||
g_ccap.port_redir_supported = 1;
|
||||
break;
|
||||
|
||||
case CAP_DRIVE_TYPE:
|
||||
LOG_DEVEL(LOG_LEVEL_DEBUG, "got CAP_DRIVE_TYPE");
|
||||
g_is_drive_redir_supported = 1;
|
||||
g_ccap.drive_redir_supported = 1;
|
||||
if (cap_version == 2)
|
||||
{
|
||||
g_drive_redir_version = 2;
|
||||
g_ccap.drive_redir_version = 2;
|
||||
}
|
||||
break;
|
||||
|
||||
case CAP_SMARTCARD_TYPE:
|
||||
LOG_DEVEL(LOG_LEVEL_DEBUG, "got CAP_SMARTCARD_TYPE");
|
||||
g_is_smartcard_redir_supported = (scard_init() == 0);
|
||||
g_ccap.smartcard_redir_supported = (scard_init() == 0);
|
||||
break;
|
||||
}
|
||||
s_pop_layer(s, iso_hdr); // Move back to start of capability data
|
||||
xstream_seek(s, cap_len);
|
||||
}
|
||||
return 0;
|
||||
#undef CAPABILITY_HEADER_LEN
|
||||
}
|
||||
|
||||
static int
|
||||
|
||||
Loading…
Reference in New Issue
Block a user