summaryrefslogtreecommitdiffstats
path: root/rdp/rdp_mcs.c
diff options
context:
space:
mode:
authorjsorg71 <jsorg71>2005-10-14 03:05:30 +0000
committerjsorg71 <jsorg71>2005-10-14 03:05:30 +0000
commit4e8b16669ec451ec73d05c51defc3982267da892 (patch)
tree4a42122036fb84c0834efb7acdbfb70a11474fcc /rdp/rdp_mcs.c
parent8d9be76c4e9bca760a7c9f5151f20b14c11123ff (diff)
downloadxrdp-proprietary-4e8b16669ec451ec73d05c51defc3982267da892.tar.gz
xrdp-proprietary-4e8b16669ec451ec73d05c51defc3982267da892.zip
added rdp_mcs.c
Diffstat (limited to 'rdp/rdp_mcs.c')
-rw-r--r--rdp/rdp_mcs.c549
1 files changed, 549 insertions, 0 deletions
diff --git a/rdp/rdp_mcs.c b/rdp/rdp_mcs.c
new file mode 100644
index 00000000..e472a1af
--- /dev/null
+++ b/rdp/rdp_mcs.c
@@ -0,0 +1,549 @@
+/*
+ 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.
+
+ xrdp: A Remote Desktop Protocol server.
+ Copyright (C) Jay Sorg 2005
+
+ librdp mcs layer
+
+*/
+
+#include "rdp.h"
+
+/*****************************************************************************/
+struct rdp_mcs* APP_CC
+rdp_mcs_create(struct rdp_sec* owner,
+ struct stream* client_mcs_data,
+ struct stream* server_mcs_data)
+{
+ struct rdp_mcs* self;
+
+ self = (struct rdp_mcs*)g_malloc(sizeof(struct rdp_mcs), 1);
+ self->sec_layer = owner;
+ self->userid = 1;
+ self->chanid = 1001;
+ self->client_mcs_data = client_mcs_data;
+ self->server_mcs_data = server_mcs_data;
+ self->iso_layer = rdp_iso_create(self);
+ return self;
+}
+
+/*****************************************************************************/
+void APP_CC
+rdp_mcs_delete(struct rdp_mcs* self)
+{
+ if (self == 0)
+ {
+ return;
+ }
+ rdp_iso_delete(self->iso_layer);
+ g_free(self);
+}
+
+/*****************************************************************************/
+/* returns error */
+int APP_CC
+rdp_mcs_recv(struct rdp_mcs* self, struct stream* s, int* chan)
+{
+ int appid;
+ int opcode;
+ int len;
+
+ if (rdp_iso_recv(self->iso_layer, s) != 0)
+ {
+ return 1;
+ }
+ in_uint8(s, opcode);
+ appid = opcode >> 2;
+ if (appid != MCS_SDIN)
+ {
+ return 1;
+ }
+ in_uint8s(s, 5);
+ in_uint8(s, len);
+ if (len & 0x80)
+ {
+ in_uint8s(s, 1);
+ }
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_ber_out_header(struct rdp_mcs* self, struct stream* s,
+ int tag_val, int len)
+{
+ if (tag_val > 0xff)
+ {
+ out_uint16_be(s, tag_val);
+ }
+ else
+ {
+ out_uint8(s, tag_val);
+ }
+ if (len >= 0x80)
+ {
+ out_uint8(s, 0x82);
+ out_uint16_be(s, len);
+ }
+ else
+ {
+ out_uint8(s, len);
+ }
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_ber_out_int8(struct rdp_mcs* self, struct stream* s, int value)
+{
+ rdp_mcs_ber_out_header(self, s, BER_TAG_INTEGER, 1);
+ out_uint8(s, value);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+#if 0
+static int APP_CC
+rdp_mcs_ber_out_int16(struct rdp_mcs* self, struct stream* s, int value)
+{
+ rdp_mcs_ber_out_header(self, s, BER_TAG_INTEGER, 2);
+ out_uint8(s, (value >> 8));
+ out_uint8(s, value);
+ return 0;
+}
+#endif
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_ber_out_int24(struct rdp_mcs* self, struct stream* s, int value)
+{
+ rdp_mcs_ber_out_header(self, s, BER_TAG_INTEGER, 3);
+ out_uint8(s, (value >> 16));
+ out_uint8(s, (value >> 8));
+ out_uint8(s, value);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_out_domain_params(struct rdp_mcs* self, struct stream* s,
+ int max_channels,
+ int max_users, int max_tokens,
+ int max_pdu_size)
+{
+ rdp_mcs_ber_out_header(self, s, MCS_TAG_DOMAIN_PARAMS, 26);
+ rdp_mcs_ber_out_int8(self, s, max_channels);
+ rdp_mcs_ber_out_int8(self, s, max_users);
+ rdp_mcs_ber_out_int8(self, s, max_tokens);
+ rdp_mcs_ber_out_int8(self, s, 1);
+ rdp_mcs_ber_out_int8(self, s, 0);
+ rdp_mcs_ber_out_int8(self, s, 1);
+ rdp_mcs_ber_out_int24(self, s, max_pdu_size);
+ rdp_mcs_ber_out_int8(self, s, 2);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_send_connection_initial(struct rdp_mcs* self)
+{
+ int data_len;
+ int len;
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ data_len = self->server_mcs_data->end - self->server_mcs_data->data;
+ len = 7 + 3 * 34 + 4 + data_len;
+ if (rdp_iso_init(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ rdp_mcs_ber_out_header(self, s, MCS_CONNECT_INITIAL, len);
+ rdp_mcs_ber_out_header(self, s, BER_TAG_OCTET_STRING, 0); /* calling domain */
+ rdp_mcs_ber_out_header(self, s, BER_TAG_OCTET_STRING, 0); /* called domain */
+ rdp_mcs_ber_out_header(self, s, BER_TAG_BOOLEAN, 1);
+ out_uint8(s, 0xff); /* upward flag */
+ rdp_mcs_out_domain_params(self, s, 2, 2, 0, 0xffff); /* target params */
+ rdp_mcs_out_domain_params(self, s, 1, 1, 1, 0x420); /* min params */
+ rdp_mcs_out_domain_params(self, s, 0xffff, 0xfc17, 0xffff, 0xffff); /* max params */
+ rdp_mcs_ber_out_header(self, s, BER_TAG_OCTET_STRING, data_len);
+ out_uint8p(s, self->server_mcs_data->data, data_len);
+ s_mark_end(s);
+ if (rdp_iso_send(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ free_stream(s);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_ber_parse_header(struct rdp_mcs* self, struct stream* s,
+ int tag_val, int* len)
+{
+ int tag;
+ int l;
+ int i;
+
+ if (tag_val > 0xff)
+ {
+ in_uint16_be(s, tag);
+ }
+ else
+ {
+ in_uint8(s, tag);
+ }
+ if (tag != tag_val)
+ {
+ return 1;
+ }
+ in_uint8(s, l);
+ if (l & 0x80)
+ {
+ l = l & ~0x80;
+ *len = 0;
+ while (l > 0)
+ {
+ in_uint8(s, i);
+ *len = (*len << 8) | i;
+ l--;
+ }
+ }
+ else
+ {
+ *len = l;
+ }
+ if (s_check(s))
+ {
+ return 0;
+ }
+ else
+ {
+ return 1;
+ }
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_parse_domain_params(struct rdp_mcs* self, struct stream* s)
+{
+ int len;
+
+ if (rdp_mcs_ber_parse_header(self, s, MCS_TAG_DOMAIN_PARAMS, &len) != 0)
+ {
+ return 1;
+ }
+ in_uint8s(s, len);
+ if (s_check(s))
+ {
+ return 0;
+ }
+ else
+ {
+ return 1;
+ }
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_recv_connection_response(struct rdp_mcs* self)
+{
+ int len;
+ int res;
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ if (rdp_iso_recv(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ rdp_mcs_ber_parse_header(self, s, MCS_CONNECT_RESPONSE, &len);
+ rdp_mcs_ber_parse_header(self, s, BER_TAG_RESULT, &len);
+ in_uint8(s, res);
+ if (res != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ rdp_mcs_ber_parse_header(self, s, BER_TAG_INTEGER, &len);
+ in_uint8s(s, len); /* connect id */
+ rdp_mcs_parse_domain_params(self, s);
+ rdp_mcs_ber_parse_header(self, s, BER_TAG_OCTET_STRING, &len);
+ if (len > self->client_mcs_data->size)
+ {
+ len = self->client_mcs_data->size;
+ }
+ in_uint8a(s, self->client_mcs_data->data, len);
+ self->client_mcs_data->p = self->client_mcs_data->data;
+ self->client_mcs_data->end = self->client_mcs_data->data + len;
+ if (s_check_end(s))
+ {
+ free_stream(s);
+ return 0;
+ }
+ else
+ {
+ free_stream(s);
+ return 1;
+ }
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_send_edrq(struct rdp_mcs* self)
+{
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ if (rdp_iso_init(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ out_uint8(s, (MCS_EDRQ << 2));
+ out_uint16_be(s, 0x100); /* height */
+ out_uint16_be(s, 0x100); /* interval */
+ s_mark_end(s);
+ if (rdp_iso_send(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ free_stream(s);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_send_aurq(struct rdp_mcs* self)
+{
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ if (rdp_iso_init(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ out_uint8(s, (MCS_AURQ << 2));
+ s_mark_end(s);
+ if (rdp_iso_send(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ free_stream(s);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_recv_aucf(struct rdp_mcs* self)
+{
+ int opcode;
+ int res;
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ if (rdp_iso_recv(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ in_uint8(s, opcode);
+ if ((opcode >> 2) != MCS_AUCF)
+ {
+ free_stream(s);
+ return 1;
+ }
+ in_uint8(s, res);
+ if (res != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ if (opcode & 2)
+ {
+ in_uint16_be(s, self->userid);
+ }
+ if (!(s_check_end(s)))
+ {
+ free_stream(s);
+ return 1;
+ }
+ free_stream(s);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_send_cjrq(struct rdp_mcs* self, int chanid)
+{
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ if (rdp_iso_init(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ out_uint8(s, (MCS_CJRQ << 2));
+ out_uint16_be(s, self->userid);
+ out_uint16_be(s, chanid);
+ s_mark_end(s);
+ if (rdp_iso_send(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ free_stream(s);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+static int APP_CC
+rdp_mcs_recv_cjcf(struct rdp_mcs* self)
+{
+ int opcode;
+ int res;
+ struct stream* s;
+
+ make_stream(s);
+ init_stream(s, 8192);
+ if (rdp_iso_recv(self->iso_layer, s) != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ in_uint8(s, opcode);
+ if ((opcode >> 2) != MCS_CJCF)
+ {
+ free_stream(s);
+ return 1;
+ }
+ in_uint8(s, res);
+ if (res != 0)
+ {
+ free_stream(s);
+ return 1;
+ }
+ in_uint8s(s, 4); /* mcs_userid, req_chanid */
+ if (opcode & 2)
+ {
+ in_uint8s(s, 2); /* join_chanid */
+ in_uint8s(s, self->userid);
+ }
+ if (!(s_check_end(s)))
+ {
+ free_stream(s);
+ return 1;
+ }
+ free_stream(s);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+int APP_CC
+rdp_mcs_connect(struct rdp_mcs* self, char* ip, char* port)
+{
+ if (rdp_iso_connect(self->iso_layer, ip, port) != 0)
+ {
+ return 1;
+ }
+ rdp_mcs_send_connection_initial(self);
+ if (rdp_mcs_recv_connection_response(self) != 0)
+ {
+ rdp_iso_disconnect(self->iso_layer);
+ return 1;
+ }
+ rdp_mcs_send_edrq(self);
+ rdp_mcs_send_aurq(self);
+ if (rdp_mcs_recv_aucf(self) != 0)
+ {
+ rdp_iso_disconnect(self->iso_layer);
+ return 1;
+ }
+ rdp_mcs_send_cjrq(self, self->userid + 1001);
+ if (rdp_mcs_recv_cjcf(self) != 0)
+ {
+ rdp_iso_disconnect(self->iso_layer);
+ return 1;
+ }
+ rdp_mcs_send_cjrq(self, MCS_GLOBAL_CHANNEL);
+ if (rdp_mcs_recv_cjcf(self) != 0)
+ {
+ rdp_iso_disconnect(self->iso_layer);
+ return 1;
+ }
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+int APP_CC
+rdp_mcs_init(struct rdp_mcs* self, struct stream* s)
+{
+ rdp_iso_init(self->iso_layer, s);
+ s_push_layer(s, mcs_hdr, 8);
+ return 0;
+}
+
+/*****************************************************************************/
+/* returns error */
+int APP_CC
+rdp_mcs_send(struct rdp_mcs* self, struct stream* s)
+{
+ int len;
+
+ s_pop_layer(s, mcs_hdr);
+ len = (s->end - s->p) - 8;
+ len = len | 0x8000;
+ out_uint8(s, MCS_SDRQ << 2);
+ out_uint16_be(s, self->userid);
+ out_uint16_be(s, MCS_GLOBAL_CHANNEL);
+ out_uint8(s, 0x70);
+ out_uint16_be(s, len);
+ if (rdp_iso_send(self->iso_layer, s) != 0)
+ {
+ return 1;
+ }
+ return 0;
+}