mirror of
https://github.com/reactos/reactos.git
synced 2024-12-28 10:04:49 +00:00
97 lines
3.7 KiB
C
97 lines
3.7 KiB
C
/*
|
|
rdesktop: A Remote Desktop Protocol client.
|
|
Parsing primitives
|
|
Copyright (C) Matthew Chapman 1999-2008
|
|
Copyright 2012 Henrik Andersson <hean01@cendio.se> for Cendio AB
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/* Parser state */
|
|
typedef struct stream
|
|
{
|
|
unsigned char *p;
|
|
unsigned char *end;
|
|
unsigned char *data;
|
|
unsigned int size;
|
|
|
|
/* Offsets of various headers */
|
|
unsigned char *iso_hdr;
|
|
unsigned char *mcs_hdr;
|
|
unsigned char *sec_hdr;
|
|
unsigned char *rdp_hdr;
|
|
unsigned char *channel_hdr;
|
|
|
|
}
|
|
*STREAM;
|
|
|
|
#define s_push_layer(s,h,n) { (s)->h = (s)->p; (s)->p += n; }
|
|
#define s_pop_layer(s,h) (s)->p = (s)->h;
|
|
#define s_mark_end(s) (s)->end = (s)->p;
|
|
#define s_check(s) ((s)->p <= (s)->end)
|
|
#define s_check_rem(s,n) ((s)->p + n <= (s)->end)
|
|
#define s_check_end(s) ((s)->p == (s)->end)
|
|
#define s_length(s) ((s)->end - (s)->data)
|
|
#define s_reset(s) ((s)->end = (s)->p = (s)->data)
|
|
|
|
#if defined(L_ENDIAN) && !defined(NEED_ALIGN)
|
|
#define in_uint16_le(s,v) { v = *(uint16 *)((s)->p); (s)->p += 2; }
|
|
#define in_uint32_le(s,v) { v = *(uint32 *)((s)->p); (s)->p += 4; }
|
|
#define out_uint16_le(s,v) { *(uint16 *)((s)->p) = v; (s)->p += 2; }
|
|
#define out_uint32_le(s,v) { *(uint32 *)((s)->p) = v; (s)->p += 4; }
|
|
|
|
#else
|
|
#define in_uint16_le(s,v) { v = *((s)->p++); v += *((s)->p++) << 8; }
|
|
#define in_uint32_le(s,v) { in_uint16_le(s,v) \
|
|
v += *((s)->p++) << 16; v += *((s)->p++) << 24; }
|
|
#define out_uint16_le(s,v) { *((s)->p++) = (v) & 0xff; *((s)->p++) = ((v) >> 8) & 0xff; }
|
|
#define out_uint32_le(s,v) { out_uint16_le(s, (v) & 0xffff); out_uint16_le(s, ((v) >> 16) & 0xffff); }
|
|
#endif
|
|
|
|
#if defined(B_ENDIAN) && !defined(NEED_ALIGN)
|
|
#define in_uint16_be(s,v) { v = *(uint16 *)((s)->p); (s)->p += 2; }
|
|
#define in_uint32_be(s,v) { v = *(uint32 *)((s)->p); (s)->p += 4; }
|
|
#define out_uint16_be(s,v) { *(uint16 *)((s)->p) = v; (s)->p += 2; }
|
|
#define out_uint32_be(s,v) { *(uint32 *)((s)->p) = v; (s)->p += 4; }
|
|
|
|
#define B_ENDIAN_PREFERRED
|
|
#define in_uint16(s,v) in_uint16_be(s,v)
|
|
#define in_uint32(s,v) in_uint32_be(s,v)
|
|
#define out_uint16(s,v) out_uint16_be(s,v)
|
|
#define out_uint32(s,v) out_uint32_be(s,v)
|
|
|
|
#else
|
|
#define in_uint16_be(s,v) { v = *((s)->p++); next_be(s,v); }
|
|
#define in_uint32_be(s,v) { in_uint16_be(s,v); next_be(s,v); next_be(s,v); }
|
|
#define out_uint16_be(s,v) { *((s)->p++) = ((v) >> 8) & 0xff; *((s)->p++) = (v) & 0xff; }
|
|
#define out_uint32_be(s,v) { out_uint16_be(s, ((v) >> 16) & 0xffff); out_uint16_be(s, (v) & 0xffff); }
|
|
#endif
|
|
|
|
#ifndef B_ENDIAN_PREFERRED
|
|
#define in_uint16(s,v) in_uint16_le(s,v)
|
|
#define in_uint32(s,v) in_uint32_le(s,v)
|
|
#define out_uint16(s,v) out_uint16_le(s,v)
|
|
#define out_uint32(s,v) out_uint32_le(s,v)
|
|
#endif
|
|
|
|
#define in_uint8(s,v) v = *((s)->p++);
|
|
#define in_uint8p(s,v,n) { v = (s)->p; (s)->p += n; }
|
|
#define in_uint8a(s,v,n) { memcpy(v,(s)->p,n); (s)->p += n; }
|
|
#define in_uint8s(s,n) (s)->p += n;
|
|
#define out_uint8(s,v) *((s)->p++) = v;
|
|
#define out_uint8p(s,v,n) { memcpy((s)->p,v,n); (s)->p += n; }
|
|
#define out_uint8a(s,v,n) out_uint8p(s,v,n);
|
|
#define out_uint8s(s,n) { memset((s)->p,0,n); (s)->p += n; }
|
|
|
|
#define next_be(s,v) v = ((v) << 8) + *((s)->p++);
|