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libxrdp: improve mcs processing

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ulab-next
Jay Sorg 11 years ago
parent c8579c3403
commit 1d9c773dbf
1 changed files with 195 additions and 37 deletions
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232
libxrdp/xrdp_rdp.c
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@ -483,65 +483,223 @@ xrdp_rdp_send_data_update_sync(struct xrdp_rdp *self)
}
/*****************************************************************************/
/* http://msdn.microsoft.com/en-us/library/cc240510.aspx
2.2.1.3.2 Client Core Data (TS_UD_CS_CORE) */
static int APP_CC
xrdp_rdp_parse_client_mcs_data(struct xrdp_rdp *self)
xrdp_rdp_parse_client_mcs_data_CS_CORE(struct xrdp_rdp* self, struct stream* s)
{
struct stream *p = (struct stream *)NULL;
int i = 0;
p = &(self->sec_layer->client_mcs_data);
p->p = p->data;
if (!s_check_rem(p, 31 + 2 + 2 + 120 + 2))
int colorDepth;
int postBeta2ColorDepth;
int highColorDepth;
int supportedColorDepths;
int earlyCapabilityFlags;
in_uint8s(s, 4); /* version */
in_uint16_le(s, self->client_info.width);
in_uint16_le(s, self->client_info.height);
in_uint16_le(s, colorDepth);
g_writeln("colorDepth 0x%4.4x (0xca00 4bpp 0xca01 8bpp)", colorDepth);
switch (colorDepth)
{
g_writeln("xrdp_rdp_parse_client_mcs_data: error");
return 1;
case 0xca00: /* RNS_UD_COLOR_4BPP */
self->client_info.bpp = 4;
break;
case 0xca01: /* RNS_UD_COLOR_8BPP */
self->client_info.bpp = 8;
break;
}
in_uint8s(p, 31);
in_uint16_le(p, self->client_info.width);
in_uint16_le(p, self->client_info.height);
in_uint8s(p, 120);
self->client_info.bpp = 8;
in_uint16_le(p, i);
switch (i)
in_uint8s(s, 2); /* SASSequence */
in_uint8s(s, 4); /* keyboardLayout */
in_uint8s(s, 4); /* clientBuild */
in_uint8s(s, 32); /* clientName */
in_uint8s(s, 4); /* keyboardType */
in_uint8s(s, 4); /* keyboardSubType */
in_uint8s(s, 4); /* keyboardFunctionKey */
in_uint8s(s, 64); /* imeFileName */
in_uint16_le(s, postBeta2ColorDepth);
g_writeln("postBeta2ColorDepth 0x%4.4x (0xca00 4bpp 0xca01 8bpp "
"0xca02 15bpp 0xca03 16bpp 0xca04 24bpp)", postBeta2ColorDepth);
switch (postBeta2ColorDepth)
{
case 0xca01:
if (!s_check_rem(p, 6 + 1))
{
return 1;
}
in_uint8s(p, 6);
in_uint8(p, i);
if (i > 8)
{
self->client_info.bpp = i;
}
case 0xca00: /* RNS_UD_COLOR_4BPP */
self->client_info.bpp = 4;
break;
case 0xca02:
case 0xca01: /* RNS_UD_COLOR_8BPP */
self->client_info.bpp = 8;
break;
case 0xca02: /* RNS_UD_COLOR_16BPP_555 */
self->client_info.bpp = 15;
break;
case 0xca03:
case 0xca03: /* RNS_UD_COLOR_16BPP_565 */
self->client_info.bpp = 16;
break;
case 0xca04:
case 0xca04: /* RNS_UD_COLOR_24BPP */
self->client_info.bpp = 24;
break;
}
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint8s(s, 2); /* clientProductId */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* serialNumber */
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, highColorDepth);
g_writeln("highColorDepth 0x%4.4x (0x0004 4bpp 0x0008 8bpp 0x000f 15bpp "
"0x0010 16 bpp 0x0018 24bpp)", highColorDepth);
self->client_info.bpp = highColorDepth;
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, supportedColorDepths);
g_writeln("supportedColorDepths 0x%4.4x (0x0001 24bpp 0x0002 16bpp "
"0x0004 15bpp 0x0008 32bpp)", supportedColorDepths);
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, earlyCapabilityFlags);
self->client_info.mcs_early_capability_flags = earlyCapabilityFlags;
g_writeln("earlyCapabilityFlags 0x%4.4x (0x0002 want32)",
earlyCapabilityFlags);
if ((earlyCapabilityFlags & 0x0002) && (supportedColorDepths & 0x0008))
{
self->client_info.bpp = 32;
}
if (!s_check_rem(s, 64))
{
return 0;
}
in_uint8s(s, 64); /* clientDigProductId */
if (!s_check_rem(s, 1))
{
return 0;
}
in_uint8(s, self->client_info.mcs_connection_type); /* connectionType */
g_writeln("got client client connection type 0x%8.8x",
self->client_info.mcs_connection_type);
if (!s_check_rem(s, 1))
{
return 0;
}
in_uint8s(s, 1); /* pad1octet */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* serverSelectedProtocol */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* desktopPhysicalWidth */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* desktopPhysicalHeight */
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint8s(s, 2); /* reserved */
return 0;
}
/*****************************************************************************/
static int APP_CC
xrdp_rdp_parse_client_mcs_data(struct xrdp_rdp* self)
{
struct stream* s;
int i;
int header_type;
int length;
char* hold_p;
char* hold_end;
s = &(self->sec_layer->client_mcs_data);
s->p = s->data;
in_uint8s(s, 23);
while (s->p < s->end)
{
if (!s_check_rem(s, 4))
{
g_writeln("xrdp_rdp_parse_client_mcs_data: parse error, bytes "
"left %d", (int)(s->end - s->p));
return 1;
}
hold_p = s->p;
hold_end = s->end;
in_uint16_le(s, header_type);
in_uint16_le(s, length);
g_writeln("type 0x%2.2x len %d", header_type, length);
if (length < 4)
{
g_writeln("xrdp_rdp_parse_client_mcs_data: parse error");
return 1;
}
if (!s_check_rem(s, length - 4))
{
g_writeln("xrdp_rdp_parse_client_mcs_data: parse error");
return 1;
}
s->end = s->p + length;
switch (header_type)
{
case 0xc001: /* CS_CORE */
xrdp_rdp_parse_client_mcs_data_CS_CORE(self, s);
break;
case 0xc002: /* CS_SECURITY */
break;
case 0xc003: /* CS_NET */
break;
case 0xc004: /* CS_CLUSTER */
break;
default:
g_writeln("xrdp_rdp_parse_client_mcs_data: error unknown "
"header type 0x%4.4x", header_type);
break;
}
s->p = hold_p + length;
s->end = hold_end;
}
if (self->client_info.max_bpp > 0)
{
if (self->client_info.bpp > self->client_info.max_bpp)
{
g_writeln("xrdp_rdp_parse_client_mcs_data: client asked for %dbpp "
"connection but configuration is limited to %dbpp",
self->client_info.bpp, self->client_info.max_bpp);
self->client_info.bpp = self->client_info.max_bpp;
}
}
s->p = s->data;
g_writeln("xrdp_rdp_parse_client_mcs_data: client bpp %d",
self->client_info.bpp);
p->p = p->data;
DEBUG(("client width %d, client height %d bpp %d",
self->client_info.width, self->client_info.height,
self->client_info.bpp));
return 0;
}

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