mcs.c File Reference

#include "precomp.h"

Include dependency graph for mcs.c:

Go to the source code of this file.

Functions
static void	mcs_out_domain_params (STREAM s, int max_channels, int max_users, int max_tokens, int max_pdusize)
static RD_BOOL	mcs_parse_domain_params (STREAM s)
static void	mcs_send_connect_initial (STREAM mcs_data)
static RD_BOOL	mcs_recv_connect_response (STREAM mcs_data)
static void	mcs_send_edrq (void)
static void	mcs_send_aurq (void)
static RD_BOOL	mcs_recv_aucf (uint16 *mcs_userid)
static void	mcs_send_cjrq (uint16 chanid)
static RD_BOOL	mcs_recv_cjcf (void)
STREAM	mcs_init (int length)
void	mcs_send_to_channel (STREAM s, uint16 channel)
void	mcs_send (STREAM s)
STREAM	mcs_recv (uint16 *channel, uint8 *rdpver)
RD_BOOL	mcs_connect_start (char *server, char *username, char *domain, char *password, RD_BOOL reconnect, uint32 *selected_protocol)
RD_BOOL	mcs_connect_finalize (STREAM mcs_data)
void	mcs_disconnect (void)
void	mcs_reset_state (void)

Variables
uint16	g_mcs_userid
VCHANNEL	g_channels []
unsigned int	g_num_channels

Function Documentation

mcs_connect_finalize()

RD_BOOL mcs_connect_finalize

(

STREAM

mcs_data

)

Definition at line 318 of file mcs.c.

{
    unsigned int i;
 
    mcs_send_connect_initial(mcs_data);
    if (!mcs_recv_connect_response(mcs_data))
        goto error;
 
    mcs_send_edrq();
 
    mcs_send_aurq();
    if (!mcs_recv_aucf(&g_mcs_userid))
        goto error;
 
    mcs_send_cjrq(g_mcs_userid + MCS_USERCHANNEL_BASE);
 
    if (!mcs_recv_cjcf())
        goto error;
 
    mcs_send_cjrq(MCS_GLOBAL_CHANNEL);
    if (!mcs_recv_cjcf())
        goto error;
 
    for (i = 0; i < g_num_channels; i++)
    {
        mcs_send_cjrq(g_channels[i].mcs_id);
        if (!mcs_recv_cjcf())
            goto error;
    }
    return True;
 
      error:
    iso_disconnect();
    return False;
}

Referenced by sec_connect().

mcs_connect_start()

RD_BOOL mcs_connect_start	(	char *	server,
		char *	username,
		char *	domain,
		char *	password,
		RD_BOOL	reconnect,
		uint32 *	selected_protocol
	)

Definition at line 311 of file mcs.c.

{
    return iso_connect(server, username, domain, password, reconnect, selected_protocol);
}

Referenced by sec_connect().

mcs_disconnect()

void mcs_disconnect

(

void

)

Definition at line 356 of file mcs.c.

{
    iso_disconnect();
}

Referenced by sec_disconnect().

mcs_init()

STREAM mcs_init

(

int

length

)

Definition at line 242 of file mcs.c.

{
    STREAM s;
 
    s = iso_init(length + 8);
    s_push_layer(s, mcs_hdr, 8);
 
    return s;
}

Referenced by sec_init().

mcs_out_domain_params()

static void mcs_out_domain_params ( STREAM  s, int  max_channels, int  max_users, int  max_tokens, int  max_pdusize  )

static

Definition at line 30 of file mcs.c.

{
    ber_out_header(s, MCS_TAG_DOMAIN_PARAMS, 32);
    ber_out_integer(s, max_channels);
    ber_out_integer(s, max_users);
    ber_out_integer(s, max_tokens);
    ber_out_integer(s, 1);  /* num_priorities */
    ber_out_integer(s, 0);  /* min_throughput */
    ber_out_integer(s, 1);  /* max_height */
    ber_out_integer(s, max_pdusize);
    ber_out_integer(s, 2);  /* ver_protocol */
}

Referenced by mcs_send_connect_initial().

mcs_parse_domain_params()

static RD_BOOL mcs_parse_domain_params ( STREAM  s )

static

Definition at line 45 of file mcs.c.

{
    int length;
 
    ber_parse_header(s, MCS_TAG_DOMAIN_PARAMS, &length);
    in_uint8s(s, length);
 
    return s_check(s);
}

Referenced by mcs_recv_connect_response().

mcs_recv()

STREAM mcs_recv	(	uint16 *	channel,
		uint8 *	rdpver
	)

Definition at line 280 of file mcs.c.

{
    uint8 opcode, appid, length;
    STREAM s;
 
    s = iso_recv(rdpver);
    if (s == NULL)
        return NULL;
    if (rdpver != NULL)
        if (*rdpver != 3)
            return s;
    in_uint8(s, opcode);
    appid = opcode >> 2;
    if (appid != MCS_SDIN)
    {
        if (appid != MCS_DPUM)
        {
            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;
}

Referenced by sec_recv().

mcs_recv_aucf()

static RD_BOOL mcs_recv_aucf ( uint16 *  mcs_userid )

static

Definition at line 161 of file mcs.c.

{
    uint8 opcode, result;
    STREAM s;
 
    s = iso_recv(NULL);
    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);
 
    return s_check_end(s);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_recv_cjcf()

static RD_BOOL mcs_recv_cjcf ( void  )

static

Definition at line 210 of file mcs.c.

{
    uint8 opcode, result;
    STREAM s;
 
    s = iso_recv(NULL);
    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;
    }
 
    in_uint8s(s, 4);    /* mcs_userid, req_chanid */
    if (opcode & 2)
        in_uint8s(s, 2);    /* join_chanid */
 
    return s_check_end(s);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_recv_connect_response()

static RD_BOOL mcs_recv_connect_response ( STREAM  mcs_data )

static

Definition at line 87 of file mcs.c.

{
    uint8 result;
    int length;
    STREAM s;
 
    s = iso_recv(NULL);
    if (s == NULL)
        return False;
 
    ber_parse_header(s, MCS_CONNECT_RESPONSE, &length);
 
    ber_parse_header(s, BER_TAG_RESULT, &length);
    in_uint8(s, result);
    if (result != 0)
    {
        error("MCS connect: %d\n", result);
        return False;
    }
 
    ber_parse_header(s, BER_TAG_INTEGER, &length);
    in_uint8s(s, length);   /* connect id */
    mcs_parse_domain_params(s);
 
    ber_parse_header(s, BER_TAG_OCTET_STRING, &length);
 
    sec_process_mcs_data(s);
    /*
       if (length > mcs_data->size)
       {
       error("MCS data length %d, expected %d\n", length,
       mcs_data->size);
       length = mcs_data->size;
       }
 
       in_uint8a(s, mcs_data->data, length);
       mcs_data->p = mcs_data->data;
       mcs_data->end = mcs_data->data + length;
     */
    return s_check_end(s);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_reset_state()

void mcs_reset_state

(

void

)

Definition at line 363 of file mcs.c.

{
    g_mcs_userid = 0;
    iso_reset_state();
}

Referenced by sec_reset_state().

mcs_send()

void mcs_send

(

STREAM

s

)

Definition at line 273 of file mcs.c.

{
    mcs_send_to_channel(s, MCS_GLOBAL_CHANNEL);
}

mcs_send_aurq()

static void mcs_send_aurq ( void  )

static

Definition at line 147 of file mcs.c.

{
    STREAM s;
 
    s = iso_init(1);
 
    out_uint8(s, (MCS_AURQ << 2));
 
    s_mark_end(s);
    iso_send(s);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_send_cjrq()

static void mcs_send_cjrq ( uint16  chanid )

static

Definition at line 192 of file mcs.c.

{
    STREAM s;
 
    DEBUG_RDP5(("Sending CJRQ for channel #%d\n", chanid));
 
    s = iso_init(5);
 
    out_uint8(s, (MCS_CJRQ << 2));
    out_uint16_be(s, g_mcs_userid);
    out_uint16_be(s, chanid);
 
    s_mark_end(s);
    iso_send(s);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_send_connect_initial()

static void mcs_send_connect_initial ( STREAM  mcs_data )

static

Definition at line 57 of file mcs.c.

{
    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);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_send_edrq()

static void mcs_send_edrq ( void  )

static

Definition at line 131 of file mcs.c.

{
    STREAM s;
 
    s = iso_init(5);
 
    out_uint8(s, (MCS_EDRQ << 2));
    out_uint16_be(s, 1);    /* height */
    out_uint16_be(s, 1);    /* interval */
 
    s_mark_end(s);
    iso_send(s);
}

Referenced by mcs_connect(), mcs_connect_finalize(), and mcs_reconnect().

mcs_send_to_channel()

void mcs_send_to_channel	(	STREAM	s,
		uint16	channel
	)

Definition at line 254 of file mcs.c.

{
    uint16 length;
 
    s_pop_layer(s, mcs_hdr);
    length = s->end - s->p - 8;
    length |= 0x8000;
 
    out_uint8(s, (MCS_SDRQ << 2));
    out_uint16_be(s, g_mcs_userid);
    out_uint16_be(s, channel);
    out_uint8(s, 0x70); /* flags */
    out_uint16_be(s, length);
 
    iso_send(s);
}

Referenced by mcs_send(), and sec_send_to_channel().

Variable Documentation

g_channels

VCHANNEL g_channels[]

extern

Definition at line 32 of file channels.c.

Referenced by mcs_connect_finalize().

g_mcs_userid

uint16 g_mcs_userid

Definition at line 23 of file mcs.c.

Referenced by mcs_connect_finalize(), mcs_reset_state(), mcs_send_cjrq(), mcs_send_to_channel(), rdp_send_confirm_active(), and rdp_send_data().

g_num_channels

unsigned int g_num_channels

extern

Definition at line 33 of file channels.c.

Referenced by mcs_connect_finalize().