Removed Xserver/ directory, it does nothing useful ATM.

[rdpsrv] / mcs.c

diff --git a/mcs.c b/mcs.c
index a9fb3d261bd2955635e1f5bf3bf783fc57217fe7..5f4fe2001b0e176ac62743185c203a3b428cea41 100644 (file)
--- a/mcs.c
+++ b/mcs.c
@@ -89,6 +89,14 @@ ber_out_integer(STREAM s, int value)
        out_uint16_be(s, value);
 }
 
        out_uint16_be(s, value);
 }
 

+static void
+ber_in_integer(STREAM s, int *value)
+{
+       int length;
+       ber_parse_header(s, BER_TAG_INTEGER, &length);
+       in_uint16_be(s, *value);
+}
+

 /* Output a DOMAIN_PARAMS structure (ASN.1 BER) */
 static void
 mcs_out_domain_params(STREAM s, int max_channels, int max_users, int max_tokens, int max_pdusize)
 /* Output a DOMAIN_PARAMS structure (ASN.1 BER) */
 static void
 mcs_out_domain_params(STREAM s, int max_channels, int max_users, int max_tokens, int max_pdusize)


@@ -109,43 +117,37 @@ static BOOL
 mcs_parse_domain_params(STREAM s)
 {
        int length;
 mcs_parse_domain_params(STREAM s)
 {
        int length;

+       int max_channels, max_users, max_tokens, max_pdusize;
+       int num_priorities, min_throughput, max_height;
+       int ver_protocol;

 
        ber_parse_header(s, MCS_TAG_DOMAIN_PARAMS, &length);
 
        ber_parse_header(s, MCS_TAG_DOMAIN_PARAMS, &length);

-       in_uint8s(s, length);
-
+       printf("MCS_TAG_DOMAIN_PARAMS, len %u (expected 32)\n", length);
+       if (length == 32) {
+               ber_in_integer(s, &max_channels);
+               ber_in_integer(s, &max_users);
+               ber_in_integer(s, &max_tokens);
+               ber_in_integer(s, &num_priorities);
+               ber_in_integer(s, &min_throughput);
+               ber_in_integer(s, &max_height);
+               ber_in_integer(s, &max_pdusize);
+               ber_in_integer(s, &ver_protocol);
+
+               printf("max_channels=%u\n", max_channels);
+               printf("max_users=%u\n", max_users);
+               printf("max_tokens=%u\n", max_tokens);
+               printf("num_priorities=%u\n", num_priorities);
+               printf("min_throughput=%u\n", min_throughput);
+               printf("max_pdusize=%u\n", max_pdusize);
+               printf("ver_protocol=%u\n", ver_protocol);
+       } else {
+               hexdump(s->p, length);
+               in_uint8s(s, length);
+       }
+       

        return s_check(s);
 }
 
        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()
 /* Expect a MCS_CONNECT_RESPONSE message (ASN.1 BER) */
 BOOL
 mcs_recv_connect_initial()


@@ -181,6 +183,45 @@ mcs_recv_connect_initial()
        return s_check_end(s);
 }
 
        return s_check_end(s);
 }
 

+void
+mcs_send_connect_response()
+{
+       STREAM s;
+       int i;
+
+       s = iso_init(92);
+
+       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, 40);
+
+       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);
+
+       // crypto info
+       out_uint16_le(s, SEC_TAG_SRV_CRYPT);
+       out_uint16_le(s, 12); // length
+       out_uint32_le(s, 1); // 40-bit
+       out_uint32_le(s, 0); // no encryption
+       
+       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)
 /* Send an EDrq message (ASN.1 PER) */
 static void
 mcs_send_edrq(void)


@@ -211,35 +252,20 @@ mcs_send_aurq(void)
        iso_send(s);
 }
 
        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;
 
        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) */
 }
 
 /* Send a CJrq message (ASN.1 PER) */


@@ -261,35 +287,20 @@ mcs_send_cjrq(uint16 chanid)
 }
 
 /* Expect a CJcf 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;
 
        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 */
 }
 
 /* Initialise an MCS transport data packet */


@@ -314,7 +325,7 @@ mcs_send_to_channel(STREAM s, uint16 channel)
        length = s->end - s->p - 8;
        length |= 0x8000;
 
        length = s->end - s->p - 8;
        length |= 0x8000;
 

-       out_uint8(s, (MCS_SDRQ << 2));
+       out_uint8(s, (MCS_SDIN << 2));

        out_uint16_be(s, g_mcs_userid);
        out_uint16_be(s, channel);
        out_uint8(s, 0x70);     /* flags */
        out_uint16_be(s, g_mcs_userid);
        out_uint16_be(s, channel);
        out_uint8(s, 0x70);     /* flags */


@@ -334,7 +345,7 @@ mcs_send(STREAM s)
 STREAM
 mcs_recv(uint16 * channel)
 {
 STREAM
 mcs_recv(uint16 * channel)
 {

-       uint8 opcode, appid, length;
+       uint8 opcode, appid, length, userid;

        STREAM s;
 
        s = iso_recv();
        STREAM s;
 
        s = iso_recv();


@@ -343,23 +354,40 @@ mcs_recv(uint16 * channel)
 
        in_uint8(s, opcode);
        appid = opcode >> 2;
 
        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;
        }
 
                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 */
 }
 
 /* Disconnect from the MCS layer */