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