return s_check(s);
}
-/* Send an MCS_CONNECT_INITIAL message (ASN.1 BER) */
-static void
-mcs_send_connect_initial(STREAM mcs_data)
-{
- int datalen = mcs_data->end - mcs_data->data;
- int length = 9 + 3 * 34 + 4 + datalen;
- STREAM s;
-
- s = iso_init(length + 5);
-
- ber_out_header(s, MCS_CONNECT_INITIAL, length);
- ber_out_header(s, BER_TAG_OCTET_STRING, 1); /* calling domain */
- out_uint8(s, 1);
- ber_out_header(s, BER_TAG_OCTET_STRING, 1); /* called domain */
- out_uint8(s, 1);
-
- ber_out_header(s, BER_TAG_BOOLEAN, 1);
- out_uint8(s, 0xff); /* upward flag */
-
- mcs_out_domain_params(s, 34, 2, 0, 0xffff); /* target params */
- mcs_out_domain_params(s, 1, 1, 1, 0x420); /* min params */
- mcs_out_domain_params(s, 0xffff, 0xfc17, 0xffff, 0xffff); /* max params */
-
- ber_out_header(s, BER_TAG_OCTET_STRING, datalen);
- out_uint8p(s, mcs_data->data, datalen);
-
- s_mark_end(s);
- iso_send(s);
-}
-
/* Expect a MCS_CONNECT_RESPONSE message (ASN.1 BER) */
BOOL
mcs_recv_connect_initial()
return s_check_end(s);
}
+void
+mcs_send_connect_response()
+{
+ STREAM s;
+
+ s = iso_init(80); // FIXME
+
+ ber_out_header(s, MCS_CONNECT_RESPONSE, 80);
+ ber_out_header(s, BER_TAG_RESULT, 1);
+ out_uint8(s, 0);
+
+ ber_out_header(s, BER_TAG_INTEGER, 1);
+ out_uint8(s, 1); // connect id
+
+ mcs_out_domain_params(s, 34, 2, 0, 0xffff); // dumdidum?
+
+ ber_out_header(s, BER_TAG_OCTET_STRING, 28);
+
+ out_uint8s(s, 21); // ick
+ out_uint8(s, 0);
+
+ // server info -- we claim to support RDP5
+ out_uint16_le(s, SEC_TAG_SRV_INFO);
+ out_uint16_le(s, 6); // length
+ out_uint16_le(s, 5);
+
+ // aiee, no crypto info yet! :-)
+
+ s_mark_end(s);
+ printf("LEN: %u\n", s->p - s->iso_hdr);
+ iso_send(s);
+
+}
+
/* Send an EDrq message (ASN.1 PER) */
static void
mcs_send_edrq(void)
iso_send(s);
}
-/* Expect a AUcf message (ASN.1 PER) */
-static BOOL
-mcs_recv_aucf(uint16 * mcs_userid)
+/* Send a AUcf message (ASN.1 PER) */
+static void
+mcs_send_aucf(uint16 mcs_userid)
{
- uint8 opcode, result;
STREAM s;
- s = iso_recv();
- if (s == NULL)
- return False;
-
- in_uint8(s, opcode);
- if ((opcode >> 2) != MCS_AUCF)
- {
- error("expected AUcf, got %d\n", opcode);
- return False;
- }
-
- in_uint8(s, result);
- if (result != 0)
- {
- error("AUrq: %d\n", result);
- return False;
- }
-
- if (opcode & 2)
- in_uint16_be(s, *mcs_userid);
+ s = iso_init(5);
- return s_check_end(s);
+ out_uint8(s, (MCS_AUCF << 2) | 2); // | 2 = send user ID
+ out_uint8(s, 0); // success
+ out_uint16_be(s, 0);
+
+ s_mark_end(s);
+ iso_send(s);
}
/* Send a CJrq message (ASN.1 PER) */
}
/* Expect a CJcf message (ASN.1 PER) */
-static BOOL
-mcs_recv_cjcf(void)
+static void
+mcs_send_cjcf(uint16 userid, uint16 chanid)
{
- uint8 opcode, result;
STREAM s;
- s = iso_recv();
- if (s == NULL)
- return False;
-
- in_uint8(s, opcode);
- if ((opcode >> 2) != MCS_CJCF)
- {
- error("expected CJcf, got %d\n", opcode);
- return False;
- }
-
- in_uint8(s, result);
- if (result != 0)
- {
- error("CJrq: %d\n", result);
- return False;
- }
+ s = iso_init(5);
- in_uint8s(s, 4); /* mcs_userid, req_chanid */
- if (opcode & 2)
- in_uint8s(s, 2); /* join_chanid */
+ out_uint8(s, (MCS_CJCF << 2));
+ out_uint8(s, 0); // success
+ out_uint16_be(s, g_mcs_userid);
+ out_uint16_be(s, chanid);
- return s_check_end(s);
+ s_mark_end(s);
+ iso_send(s);
}
/* Initialise an MCS transport data packet */
STREAM
mcs_recv(uint16 * channel)
{
- uint8 opcode, appid, length;
+ uint8 opcode, appid, length, userid;
STREAM s;
s = iso_recv();
in_uint8(s, opcode);
appid = opcode >> 2;
- if (appid != MCS_SDIN)
- {
- if (appid != MCS_DPUM)
- {
- error("expected data, got %d\n", opcode);
- }
+
+ switch (appid) {
+ case MCS_SDRQ:
+ in_uint8s(s, 2); /* userid */
+ in_uint16_be(s, *channel);
+ in_uint8s(s, 1); /* flags */
+ in_uint8(s, length);
+ if (length & 0x80)
+ in_uint8s(s, 1); /* second byte of length */
+
+ return s;
+ case MCS_DPUM:
+ return NULL;
+ case MCS_EDRQ:
+ // Erect Domain (ignore)
+ printf("Received EDrq\n");
+ return NULL;
+ case MCS_AURQ:
+ // Attach User Request, respond with AUcf (Attach User Confirm)
+ printf("Received AUrq, sending AUcf\n");
+ mcs_send_aucf(0);
+ return NULL;
+ case MCS_CJRQ:
+ // Channel Join Request, respond with CJcf (Channel Join Confirm);
+ in_uint16_be(s, userid);
+ in_uint16_be(s, *channel);
+ printf("Received CJrq for channel %hu, sending CJcf\n", *channel);
+ mcs_send_cjcf(userid, *channel);
+ return NULL;
+ default:
+ error("expected data, got %d\n", opcode);
return NULL;
}
- in_uint8s(s, 2); /* userid */
- in_uint16_be(s, *channel);
- in_uint8s(s, 1); /* flags */
- in_uint8(s, length);
- if (length & 0x80)
- in_uint8s(s, 1); /* second byte of length */
-
- return s;
}
/* Disconnect from the MCS layer */