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