Pull in even more rdesktop source.

[rdpsrv] / parse.h

diff --git a/parse.h b/parse.h
new file mode 100644 (file)
index 0000000..cacea51
--- /dev/null
+++ b/parse.h
@@ -0,0 +1,94 @@
+/*
+   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; }