X-Git-Url: https://git.sesse.net/?p=rdpsrv;a=blobdiff_plain;f=parse.h;fp=parse.h;h=cacea51675e188882a4968e185a6dbe5648df6f7;hp=0000000000000000000000000000000000000000;hb=86ae6f2670e6d7a62d9fbb2243c8aae28b925645;hpb=46f3372353ccdd654ef45f0b73128c16fb057e58

diff --git a/parse.h b/parse.h
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--- /dev/null
+++ b/parse.h
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+/*
+   rdesktop: A Remote Desktop Protocol client.
+   Parsing primitives
+   Copyright (C) Matthew Chapman 1999-2002
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* 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)
+
+#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 next_be(s,v)		v = ((v) << 8) + *((s)->p++);
+#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; }