23 |
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24 |
extern uint8 *g_next_packet; |
extern uint8 *g_next_packet; |
25 |
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26 |
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extern RDPCOMP g_mppc_dict; |
27 |
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28 |
void |
void |
29 |
rdp5_process(STREAM s, BOOL encryption) |
rdp5_process(STREAM s, BOOL encryption) |
30 |
{ |
{ |
31 |
uint16 length, count, x, y; |
uint16 length, count, x, y; |
32 |
uint8 type; |
uint8 type, ctype; |
33 |
uint8 *next; |
uint8 *next; |
34 |
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35 |
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uint32 roff, rlen; |
36 |
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struct stream *ns = &(g_mppc_dict.ns); |
37 |
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struct stream *ts; |
38 |
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39 |
if (encryption) |
if (encryption) |
40 |
{ |
{ |
41 |
in_uint8s(s, 8); /* signature */ |
in_uint8s(s, 8); /* signature */ |
50 |
while (s->p < s->end) |
while (s->p < s->end) |
51 |
{ |
{ |
52 |
in_uint8(s, type); |
in_uint8(s, type); |
53 |
in_uint16_le(s, length); |
if (type & RDP_COMPRESSION) |
54 |
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{ |
55 |
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in_uint8(s, ctype); |
56 |
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in_uint16_le(s, length); |
57 |
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type ^= RDP_COMPRESSION; |
58 |
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} |
59 |
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else |
60 |
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{ |
61 |
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ctype = 0; |
62 |
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in_uint16_le(s, length); |
63 |
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} |
64 |
g_next_packet = next = s->p + length; |
g_next_packet = next = s->p + length; |
65 |
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66 |
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if (ctype & RDP_MPPC_COMPRESSED) |
67 |
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{ |
68 |
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69 |
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if (mppc_expand(s->p, length, ctype, &roff, &rlen) == -1) |
70 |
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error("error while decompressing packet\n"); |
71 |
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72 |
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/* allocate memory and copy the uncompressed data into the temporary stream */ |
73 |
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ns->data = xrealloc(ns->data, rlen); |
74 |
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75 |
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memcpy((ns->data), (unsigned char *) (g_mppc_dict.hist + roff), rlen); |
76 |
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77 |
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ns->size = rlen; |
78 |
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ns->end = (ns->data + ns->size); |
79 |
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ns->p = ns->data; |
80 |
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ns->rdp_hdr = ns->p; |
81 |
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82 |
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ts = ns; |
83 |
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} |
84 |
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else |
85 |
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ts = s; |
86 |
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|
87 |
switch (type) |
switch (type) |
88 |
{ |
{ |
89 |
/* Thanks to Jeroen Meijer <jdmeijer at yahoo |
/* Thanks to Jeroen Meijer <jdmeijer at yahoo |
91 |
most of the opcodes here. Especially opcode |
most of the opcodes here. Especially opcode |
92 |
8! :) */ |
8! :) */ |
93 |
case 0: /* orders */ |
case 0: /* orders */ |
94 |
in_uint16_le(s, count); |
in_uint16_le(ts, count); |
95 |
process_orders(s, count); |
process_orders(ts, count); |
96 |
break; |
break; |
97 |
case 1: /* bitmap update (???) */ |
case 1: /* bitmap update (???) */ |
98 |
in_uint8s(s, 2); /* part length */ |
in_uint8s(ts, 2); /* part length */ |
99 |
process_bitmap_updates(s); |
process_bitmap_updates(ts); |
100 |
break; |
break; |
101 |
case 2: /* palette */ |
case 2: /* palette */ |
102 |
in_uint8s(s, 2); /* uint16 = 2 */ |
in_uint8s(ts, 2); /* uint16 = 2 */ |
103 |
process_palette(s); |
process_palette(ts); |
104 |
break; |
break; |
105 |
case 3: /* probably an palette with offset 3. Weird */ |
case 3: /* probably an palette with offset 3. Weird */ |
106 |
break; |
break; |
108 |
ui_set_null_cursor(); |
ui_set_null_cursor(); |
109 |
break; |
break; |
110 |
case 8: |
case 8: |
111 |
in_uint16_le(s, x); |
in_uint16_le(ts, x); |
112 |
in_uint16_le(s, y); |
in_uint16_le(ts, y); |
113 |
if (s_check(s)) |
if (s_check(ts)) |
114 |
ui_move_pointer(x, y); |
ui_move_pointer(x, y); |
115 |
break; |
break; |
116 |
case 9: |
case 9: |
117 |
process_colour_pointer_pdu(s); |
process_colour_pointer_pdu(ts); |
118 |
break; |
break; |
119 |
case 10: |
case 10: |
120 |
process_cached_pointer_pdu(s); |
process_cached_pointer_pdu(ts); |
121 |
break; |
break; |
122 |
default: |
default: |
123 |
unimpl("RDP5 opcode %d\n", type); |
unimpl("RDP5 opcode %d\n", type); |