added parse.h

xrdp/parse.h

@@ -0,0 +1,186 @@
+/*
+   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.
+*/
+
+/* modified for xrdp */
+/* this is a super fast stream method, you bet */
+/* all little endian for now */
+
+/* parser state */
+struct stream
+{
+  char* p;
+  char* end;
+  char* data;
+  int size;
+  /* offsets of various headers */
+  char* iso_hdr;
+  char* mcs_hdr;
+  char* sec_hdr;
+  char* rdp_hdr;
+  char* channel_hdr;
+};
+
+#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 init_stream(s, v) \
+{ \
+  if (v > s->size) \
+  { \
+    g_free(s->data); \
+    s->data = (char*)g_malloc(v, 0); \
+  } \
+  s->p = s->data; \
+  s->end = s->data; \
+  s->size = v; \
+}
+
+#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 in_uint8(s, v) \
+{ \
+  v = *((unsigned char*)(s->p)); \
+  s->p++; \
+}
+
+#define in_uint16_le(s, v) \
+{ \
+  v = *((unsigned short*)(s->p)); \
+  s->p += 2; \
+}
+
+#define in_uint16_be(s, v) \
+{ \
+  v = *((unsigned char*)(s->p)); \
+  s->p++; \
+  v = v << 8; \
+  v = v | *((unsigned char*)(s->p)); \
+  s->p++; \
+}
+
+#define in_uint32_le(s, v) \
+{ \
+  v = *(unsigned long*)(s->p); \
+  s->p += 4; \
+}
+
+#define in_uint32_be(s, v) \
+{ \
+  v = *((unsigned char*)(s->p)); \
+  s->p++; \
+  v = v << 8; \
+  v = v | *((unsigned char*)(s->p)); \
+  s->p++; \
+  v = v << 8; \
+  v = v | *((unsigned char*)(s->p)); \
+  s->p++; \
+  v = v << 8; \
+  v = v | *((unsigned char*)(s->p)); \
+  s->p++; \
+}
+
+#define out_uint8(s, v) \
+{ \
+  *((unsigned char*)(s->p)) = (unsigned char)(v); \
+  s->p++; \
+}
+
+#define out_uint16_le(s, v) \
+{ \
+  *((unsigned short*)(s->p)) = (unsigned short)(v); \
+  s->p += 2; \
+}
+
+#define out_uint16_be(s, v) \
+{ \
+  *((unsigned char*)(s->p)) = (unsigned char)((v) >> 8); \
+  s->p++; \
+  *((unsigned char*)(s->p)) = (unsigned char)(v); \
+  s->p++; \
+}
+
+#define out_uint32_le(s, v) \
+{ \
+  *((unsigned long*)(s->p)) = (v); \
+  s->p += 4; \
+}
+
+#define out_uint32_be(s, v) \
+{ \
+  *((unsigned char*)(s->p)) = (unsigned char)((v) >> 24); \
+  s->p++; \
+  *((unsigned char*)(s->p)) = (unsigned char)((v) >> 16); \
+  s->p++; \
+  *((unsigned char*)(s->p)) = (unsigned char)((v) >> 8); \
+  s->p++; \
+  *((unsigned char*)(s->p)) = (unsigned char)(v); \
+  s->p++; \
+}
+
+#define in_uint8p(s, v, n) \
+{ \
+  v = s->p; \
+  s->p += n; \
+}
+
+#define in_uint8a(s, v, n) \
+{ \
+  g_memcpy(v, s->p, n); \
+  s->p += n; \
+}
+
+#define in_uint8s(s, n) \
+{ \
+  s->p += n; \
+}
+
+#define out_uint8p(s, v, n) \
+{ \
+  g_memcpy(s->p, v, n); \
+  s->p += n; \
+}
+
+#define out_uint8a(s, v, n) \
+{ \
+  out_uint8p(s, v, n); \
+}
+
+#define out_uint8s(s, n) \
+{ \
+  g_memset(s->p, 0, n); \
+  s->p += n; \
+}