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libxrdp: work on fastpath input

Browse Source
ulab-next
speidy 10 years ago
parent 9a98299e2b
commit cbf5d50a5c
7 changed files with 129 additions and 24 deletions
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18
common/xrdp_constants.h
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@ -560,6 +560,24 @@
#define RDP_CAPSET_LPOINTER 0x27
#define RDP_CAPLEN_LPOINTER 0x06
/* fastpath input */
#define FASTPATH_INPUT_SECURE_CHECKSUM 0x1
#define FASTPATH_INPUT_ENCRYPTED 0x2
#define FASTPATH_INPUT_ACTION_FASTPATH 0x0
#define FASTPATH_INPUT_ACTION_X224 0x3
#define FASTPATH_INPUT_EVENT_SCANCODE 0x0
#define FASTPATH_INPUT_EVENT_MOUSE 0x1
#define FASTPATH_INPUT_EVENT_MOUSEX 0x2
#define FASTPATH_INPUT_EVENT_SYNC 0x3
#define FASTPATH_INPUT_EVENT_UNICODE 0x4
#define FASTPATH_INPUT_KBDFLAGS_RELEASE 0x01
#define FASTPATH_INPUT_KBDFLAGS_EXTENDED 0x02
/* fastpath output */
#define FASTPATH_OUTPUT_ACTION_FASTPATH 0x0
#define FASTPATH_OUTPUT_ACTION_X224 0x3

3
libxrdp/Makefile.am
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@ -59,7 +59,8 @@ libxrdp_la_SOURCES = \
xrdp_bitmap_compress.c \
xrdp_jpeg_compress.c \
xrdp_orders_rail.c \
xrdp_mppc_enc.c
xrdp_mppc_enc.c \
xrdp_fastpath.c
libxrdp_la_LDFLAGS = \
$(EXTRA_FLAGS)

20
libxrdp/libxrdp.h
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@ -42,6 +42,8 @@ struct xrdp_tcp
{
struct trans* trans;
struct xrdp_iso* iso_layer; /* owner */
struct xrdp_fastpath* fastpath_layer; /* owner */
};
/* iso */
@ -73,11 +75,21 @@ struct xrdp_mcs
struct list* channel_list;
};
/* fastpath */
struct xrdp_fastpath
{
struct xrdp_sec* sec_layer; /* owner */
struct xrdp_tcp* tcp_layer;
int numEvents;
int secFlags;
};
/* sec */
struct xrdp_sec
{
struct xrdp_rdp* rdp_layer; /* owner */
struct xrdp_mcs* mcs_layer;
struct xrdp_fastpath* fastpath_layer;
struct xrdp_channel* chan_layer;
char server_random[32];
char client_random[64];
@ -494,4 +506,12 @@ int APP_CC
xrdp_channel_process(struct xrdp_channel* self, struct stream* s,
int chanid);
/* xrdp_fastpath.c */
struct xrdp_fastpath *APP_CC
xrdp_fastpath_create(struct xrdp_sec *owner, struct trans *trans);
void APP_CC
xrdp_fastpath_delete(struct xrdp_fastpath *self);
int APP_CC
xrdp_fastpath_recv(struct xrdp_fastpath *self, struct stream *s);
#endif

62
libxrdp/xrdp_fastpath.c
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@ -21,16 +21,15 @@
/*****************************************************************************/
struct xrdp_fastpath *APP_CC
xrdp_fastpath_create(struct xrdp_session *session)
xrdp_fastpath_create(struct xrdp_sec *owner, struct trans *trans)
{
struct xrdp_fastpath *self;
DEBUG((" in xrdp_fastpath_create"));
self = (struct xrdp_fastpath *)g_malloc(sizeof(struct xrdp_fastpath), 1);
self->tcp_layer =
((struct xrdp_rdp *)session->rdp)->sec_layer->
mcs_layer->iso_layer->tcp_layer;
make_stream(self->out_s);
init_stream(self->out_s, FASTPATH_MAX_PACKET_SIZE);
self->sec_layer = owner;
self->tcp_layer = owner->mcs_layer->iso_layer->tcp_layer;
DEBUG((" out xrdp_fastpath_create"));
return self;
}
@ -42,8 +41,6 @@ xrdp_fastpath_delete(struct xrdp_fastpath *self)
{
return;
}
free_stream(self->out_s);
g_free(self);
}
@ -54,7 +51,52 @@ xrdp_fastpath_reset(struct xrdp_fastpath *self)
{
return 0;
}
/*****************************************************************************/
int APP_CC
xrdp_fastpath_recv(struct xrdp_fastpath *self, struct stream *s)
{
int fp_hdr;
int len;
int byte;
DEBUG((" in xrdp_fastpath_recv"));
/* read the first fastpath byte
* (we already received it via iso layer */
in_uint8(s, fp_hdr); /* fpInputHeader (1 byte) */
self->numEvents = (fp_hdr & 0x3C) >> 2;
self->secFlags = (fp_hdr & 0xC0) >> 6;
// receive fastpath packet length
if (xrdp_tcp_recv(self->tcp_layer, s, 1) != 0)
{
return 1;
}
in_uint8(s, byte); /* length 1 */
if (byte & 0x80)
{
byte &= ~(0x80);
len = (byte << 8);
in_uint8(s, byte); /* length 2 */
len += byte;
}
else
{
len = byte;
}
// receive the left bytes
if (xrdp_tcp_recv(self->tcp_layer, s, len) != 0)
{
return 1;
}
DEBUG((" out xrdp_fastpath_recv"));
return 0;
}
/*****************************************************************************/
int APP_CC
xrdp_fastpath_init(struct xrdp_fastpath *self)
{
@ -76,7 +118,7 @@ xrdp_fastpath_send_update_pdu(struct xrdp_fastpath *self, tui8 updateCode,
int i32;
compression = 0;
s_send = self->out_s;
// s_send = self->out_s;
maxLen = FASTPATH_MAX_PACKET_SIZE - 6; /* 6 bytes for header */
payloadLeft = (s->end - s->data);
@ -112,7 +154,7 @@ xrdp_fastpath_send_update_pdu(struct xrdp_fastpath *self, tui8 updateCode,
((compression & 0x03) << 6);
out_uint8(s_send, i32);
out_uint16_le(s_send, len);
s_copy(s_send, s, len);
// s_copy(s_send, s, len);
s_mark_end(s_send);
if (xrdp_tcp_send(self->tcp_layer, s_send) != 0)

10
libxrdp/xrdp_iso.c
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@ -158,15 +158,13 @@ xrdp_iso_recv_tpkt_header(struct xrdp_iso *self, struct stream *s)
int plen;
int ver;
DEBUG((" in xrdp_iso_recv_tpkt_header"));
if (xrdp_tcp_recv(self->tcp_layer, s, 1) != 0)
{
return 1;
}
in_uint8_peek(s, ver);
g_writeln(" tpkt version: %x", ver);
in_uint8_peek(s, ver); // Peek only so we can use it later in fastpath layer, if needed
g_writeln(" tpkt version: %x", ver); // TODO: delete it
if (ver != 3)
{
@ -190,8 +188,6 @@ xrdp_iso_recv_tpkt_header(struct xrdp_iso *self, struct stream *s)
return 1; // tpkt must be >= 4 bytes length
}
DEBUG((" out xrdp_iso_recv_tpkt_header"));
return plen;
}
/*****************************************************************************/
@ -208,7 +204,6 @@ xrdp_iso_write_tpkt_header(struct stream *s, int len)
int APP_CC
xrdp_iso_read_x224_header(struct stream *s, int *code, int *len)
{
DEBUG((" in xrdp_iso_read_x224_header"));
if (!s_check_rem(s, 2))
{
return 1;
@ -233,7 +228,6 @@ xrdp_iso_read_x224_header(struct stream *s, int *code, int *len)
}
in_uint8s(s, 5);
}
DEBUG((" out xrdp_iso_read_x224_header"));
return 0;
}

11
libxrdp/xrdp_rdp.c
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@ -348,10 +348,13 @@ xrdp_rdp_recv(struct xrdp_rdp *self, struct stream *s, int *code)
int APP_CC
xrdp_rdp_recv_fastpath(struct xrdp_rdp *self, struct stream *s, int *code)
{
g_writeln("Booyah!");
int msg;
in_uint8(s, msg);
g_writeln("msg= %x", msg);
int i;
DEBUG(("in xrdp_rdp_recv_fastpath"));
// for (i = 0 ; i < self->sec_layer->fastpath_layer->numEvents ; i++) {
//
// }
g_hexdump(s->data, 7);
DEBUG(("out xrdp_rdp_recv_fastpath"));
return 1;
}
/*****************************************************************************/

29
libxrdp/xrdp_sec.c
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@ -185,6 +185,7 @@ xrdp_sec_create(struct xrdp_rdp *owner, struct trans *trans, int crypt_level,
self->encrypt_rc4_info = ssl_rc4_info_create();
self->mcs_layer = xrdp_mcs_create(self, trans, &self->client_mcs_data,
&self->server_mcs_data);
self->fastpath_layer = xrdp_fastpath_create(self, trans);
self->chan_layer = xrdp_channel_create(self, self->mcs_layer);
DEBUG((" out xrdp_sec_create"));
return self;
@ -202,6 +203,7 @@ xrdp_sec_delete(struct xrdp_sec *self)
xrdp_channel_delete(self->chan_layer);
xrdp_mcs_delete(self->mcs_layer);
xrdp_fastpath_delete(self->fastpath_layer);
ssl_rc4_info_delete(self->decrypt_rc4_info); /* TODO clear all data */
ssl_rc4_info_delete(self->encrypt_rc4_info); /* TODO clear all data */
g_free(self->client_mcs_data.data);
@ -732,7 +734,32 @@ xrdp_sec_establish_keys(struct xrdp_sec *self)
ssl_rc4_set_key(self->decrypt_rc4_info, self->decrypt_key, self->rc4_key_len);
ssl_rc4_set_key(self->encrypt_rc4_info, self->encrypt_key, self->rc4_key_len);
}
/*****************************************************************************/
/* returns error */
int APP_CC
xrdp_sec_recv_fastpath(struct xrdp_sec *self, struct stream *s)
{
if (xrdp_fastpath_recv(self->fastpath_layer, s) != 0) {
return 1;
}
in_uint8s(s, 8); /* dataSignature, skip for now */
if (self->fastpath_layer->secFlags & FASTPATH_INPUT_ENCRYPTED) {
xrdp_sec_decrypt(self, s->p, (int)(s->end - s->p));
}
if (self->fastpath_layer->numEvents == 0) {
/**
* If numberEvents is not provided in fpInputHeader, it will be provided
* as one additional byte here.
*/
in_uint8(s, self->fastpath_layer->numEvents); /* numEvents (optional) */
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
@ -749,7 +776,7 @@ xrdp_sec_recv(struct xrdp_sec *self, struct stream *s, int *chan)
if (mcs_msg == 2)
{
DEBUG((" out xrdp_sec_recv : non-TPKT msg detected, we try fastpath"));
// xrdp_sec_recv_fastpath(self->mcs_layer->iso_layer, s);
xrdp_sec_recv_fastpath(self, s);
return mcs_msg;
}

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