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xrdp-proprietary/sesman/libscp/libscp_v1c_mng.c

422 lines
12 KiB

/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2012
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*
* @file libscp_v1c_mng.c
* @brief libscp version 1 client api code - session management
* @author Simone Fedele
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "libscp_v1c_mng.h"
#include <stdlib.h>
#include <stdio.h>
//extern struct log_config* s_log;
static enum SCP_CLIENT_STATES_E
_scp_v1c_mng_check_response(struct SCP_CONNECTION *c, struct SCP_SESSION *s);
/* client API */
/* 001 */
enum SCP_CLIENT_STATES_E
scp_v1c_mng_connect(struct SCP_CONNECTION *c, struct SCP_SESSION *s)
{
tui8 sz;
tui32 size;
init_stream(c->out_s, c->out_s->size);
init_stream(c->in_s, c->in_s->size);
size = 12 + 4 + g_strlen(s->hostname) + g_strlen(s->username) +
g_strlen(s->password);
if (s->addr_type == SCP_ADDRESS_TYPE_IPV4)
{
size = size + 4;
}
else
{
size = size + 16;
}
/* sending request */
/* header */
out_uint32_be(c->out_s, 1); /* version */
out_uint32_be(c->out_s, size);
out_uint16_be(c->out_s, SCP_COMMAND_SET_MANAGE);
out_uint16_be(c->out_s, SCP_CMD_MNG_LOGIN);
/* data */
sz = g_strlen(s->username);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->username, sz);
sz = g_strlen(s->password);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->password, sz);
/* address */
out_uint8(c->out_s, s->addr_type);
if (s->addr_type == SCP_ADDRESS_TYPE_IPV4)
{
out_uint32_be(c->out_s, s->ipv4addr);
}
else
{
out_uint8p(c->out_s, s->ipv6addr, 16);
}
/* hostname */
sz = g_strlen(s->hostname);
out_uint8(c->out_s, sz);
out_uint8p(c->out_s, s->hostname, sz);
if (0 != scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: network error", __LINE__);
return SCP_CLIENT_STATE_NETWORK_ERR;
}
/* wait for response */
return _scp_v1c_mng_check_response(c, s);
}
/* 004 */
enum SCP_CLIENT_STATES_E
scp_v1c_mng_get_session_list(struct SCP_CONNECTION *c, int *scount,
struct SCP_DISCONNECTED_SESSION **s)
{
tui32 version = 1;
tui32 size = 12;
tui16 cmd = SCP_CMD_MNG_LIST_REQ; /* request session list */
tui32 sescnt = 0; /* total session number */
tui32 sestmp = 0; /* additional total session number */
tui8 pktcnt = 0; /* packet session count */
tui32 totalcnt = 0; /* session counter */
tui8 continued = 0; /* continue flag */
int firstpkt = 1; /* "first packet" flag */
int idx;
struct SCP_DISCONNECTED_SESSION *ds = 0;
// tui8 addr[16];
init_stream(c->out_s, c->out_s->size);
/* we request session list */
out_uint32_be(c->out_s, version); /* version */
out_uint32_be(c->out_s, size); /* size */
out_uint16_be(c->out_s, SCP_COMMAND_SET_MANAGE); /* cmdset */
out_uint16_be(c->out_s, cmd); /* cmd */
if (0 != scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: network error", __LINE__);
return SCP_CLIENT_STATE_NETWORK_ERR;
}
do
{
/* then we wait for server response */
init_stream(c->in_s, c->in_s->size);
if (0 != scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: network error", __LINE__);
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version != 1)
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: version error", __LINE__);
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size < 12)
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: size error", __LINE__);
return SCP_CLIENT_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
if (0 != scp_tcp_force_recv(c->in_sck, c->in_s->data, size - 8))
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: network error", __LINE__);
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_COMMAND_SET_MANAGE)
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: sequence error", __LINE__);
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_CMD_MNG_LIST) /* session list */
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: sequence error", __LINE__);
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
if (firstpkt)
{
firstpkt = 0;
in_uint32_be(c->in_s, sescnt);
sestmp = sescnt;
if (0 == sescnt)
{
/* return data... */
(*scount) = sescnt;
(*s) = NULL;
LOG_DBG("[v1c_mng] end list - no session on TS");
return SCP_CLIENT_STATE_LIST_OK;
}
ds = g_new(struct SCP_DISCONNECTED_SESSION, sescnt);
if (ds == 0)
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: internal error", __LINE__);
return SCP_CLIENT_STATE_INTERNAL_ERR;
}
}
else
{
in_uint32_be(c->in_s, sestmp);
}
in_uint8(c->in_s, continued);
in_uint8(c->in_s, pktcnt);
for (idx = 0; idx < pktcnt; idx++)
{
in_uint32_be(c->in_s, (ds[totalcnt]).SID); /* session id */
in_uint8(c->in_s, (ds[totalcnt]).type);
in_uint16_be(c->in_s, (ds[totalcnt]).height);
in_uint16_be(c->in_s, (ds[totalcnt]).width);
in_uint8(c->in_s, (ds[totalcnt]).bpp);
in_uint8(c->in_s, (ds[totalcnt]).idle_days);
in_uint8(c->in_s, (ds[totalcnt]).idle_hours);
in_uint8(c->in_s, (ds[totalcnt]).idle_minutes);
in_uint16_be(c->in_s, (ds[totalcnt]).conn_year);
in_uint8(c->in_s, (ds[totalcnt]).conn_month);
in_uint8(c->in_s, (ds[totalcnt]).conn_day);
in_uint8(c->in_s, (ds[totalcnt]).conn_hour);
in_uint8(c->in_s, (ds[totalcnt]).conn_minute);
in_uint8(c->in_s, (ds[totalcnt]).addr_type);
if ((ds[totalcnt]).addr_type == SCP_ADDRESS_TYPE_IPV4)
{
in_uint32_be(c->in_s, (ds[totalcnt]).ipv4addr);
}
if ((ds[totalcnt]).addr_type == SCP_ADDRESS_TYPE_IPV6)
{
in_uint8a(c->in_s, (ds[totalcnt]).ipv6addr, 16);
}
totalcnt++;
}
}
while (continued);
/* return data... */
(*scount) = sescnt;
(*s) = ds;
LOG_DBG("[v1c_mng] end list");
return SCP_CLIENT_STATE_LIST_OK;
}
/* 043 * /
enum SCP_CLIENT_STATES_E
scp_v1c_select_session(struct SCP_CONNECTION* c, struct SCP_SESSION* s,
SCP_SID sid)
{
tui32 version = 1;
tui32 size = 16;
tui16 cmd = 43;
init_stream(c->out_s, c->out_s->size);
/ * sending our selection * /
out_uint32_be(c->out_s, version); / * version * /
out_uint32_be(c->out_s, size); / * size * /
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); / * cmdset * /
out_uint16_be(c->out_s, cmd); / * cmd * /
out_uint32_be(c->out_s, sid);
if (0 != scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
/ * waiting for response.... * /
init_stream(c->in_s, c->in_s->size);
if (0 != scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version != 1)
{
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
if (size < 12)
{
return SCP_CLIENT_STATE_SIZE_ERR;
}
init_stream(c->in_s, c->in_s->size);
/ * read the rest of the packet * /
if (0 != scp_tcp_force_recv(c->in_sck, c->in_s->data, size - 8))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_COMMAND_SET_DEFAULT)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != 46)
{
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
/ * session display * /
in_uint16_be(c->in_s, (s->display));
/ *we don't need to return any data other than the display * /
/ *because we already sent that * /
return SCP_CLIENT_STATE_OK;
}*/
/* 044 * /
enum SCP_CLIENT_STATES_E
scp_v1c_select_session_cancel(struct SCP_CONNECTION* c)
{
tui32 version = 1;
tui32 size = 12;
tui16 cmd = 44;
init_stream(c->out_s, c->out_s->size);
/ * sending our selection * /
out_uint32_be(c->out_s, version); / * version * /
out_uint32_be(c->out_s, size); / * size * /
out_uint16_be(c->out_s, SCP_COMMAND_SET_DEFAULT); / * cmdset * /
out_uint16_be(c->out_s, cmd); / * cmd * /
if (0 != scp_tcp_force_send(c->in_sck, c->out_s->data, size))
{
return SCP_CLIENT_STATE_NETWORK_ERR;
}
return SCP_CLIENT_STATE_END;
}*/
static enum SCP_CLIENT_STATES_E
_scp_v1c_mng_check_response(struct SCP_CONNECTION *c, struct SCP_SESSION *s)
{
tui32 version;
tui32 size;
tui16 cmd;
tui8 dim;
char buf[257];
init_stream(c->in_s, c->in_s->size);
if (0 != scp_tcp_force_recv(c->in_sck, c->in_s->data, 8))
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: network error", __LINE__);
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint32_be(c->in_s, version);
if (version != 1)
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: version error", __LINE__);
return SCP_CLIENT_STATE_VERSION_ERR;
}
in_uint32_be(c->in_s, size);
init_stream(c->in_s, c->in_s->size);
/* read the rest of the packet */
if (0 != scp_tcp_force_recv(c->in_sck, c->in_s->data, size - 8))
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: network error", __LINE__);
return SCP_CLIENT_STATE_NETWORK_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd != SCP_COMMAND_SET_MANAGE)
{
log_message(LOG_LEVEL_WARNING, "[v1c_mng:%d] connection aborted: sequence error", __LINE__);
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}
in_uint16_be(c->in_s, cmd);
if (cmd == SCP_CMD_MNG_LOGIN_ALLOW) /* connection ok */
{
log_message(LOG_LEVEL_INFO, "[v1c_mng:%d] connection ok", __LINE__);
return SCP_CLIENT_STATE_OK;
}
else if (cmd == SCP_CMD_MNG_LOGIN_DENY) /* connection denied */
{
in_uint8(c->in_s, dim);
buf[dim] = '\0';
in_uint8a(c->in_s, buf, dim);
scp_session_set_errstr(s, buf);
log_message(LOG_LEVEL_INFO, "[v1c_mng:%d] connection denied: %s", __LINE__ , s->errstr);
return SCP_CLIENT_STATE_CONNECTION_DENIED;
}
log_message(LOG_LEVEL_WARNING, "[v1c-mng:%d] connection aborted: sequence error", __LINE__);
return SCP_CLIENT_STATE_SEQUENCE_ERR;
}