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0aae834802070097930700f914a0e130a4fa1be7
xrdp/libipm/ercp.c
T
matt335672 c4727ad8f3 Replace X11 display number with a display string 
As far as possible, use of the X11 display number is kept to
X11-specific routines. This is to make it easier to restructure
the code to add non-X11 display support.
2026-03-04 14:34:31 +00:00

341 lines
9.6 KiB
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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2022, all xrdp contributors
*
* 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 libipm/ercp.c
* @brief ERCP definitions
* @author Matt Burt
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "ercp.h"
#include "libipm.h"
#include "guid.h"
#include "os_calls.h"
#include "trans.h"
/*****************************************************************************/
static const char *
msgno_to_str(unsigned short n)
{
return
(n == E_ERCP_SESSION_ANNOUNCE_EVENT) ? "ERCP_SESSION_ANNOUNCE_EVENT" :
(n == E_ERCP_SESSION_FINISHED_EVENT) ? "ERCP_SESSION_FINISHED_EVENT" :
(n == E_ERCP_CONNECT_SESSION_REQUEST) ? "ERCP_CONNECT_SESSION_REQUEST" :
(n == E_ERCP_CLIENT_CONNECT_EVENT) ? "ERCP_CLIENT_CONNECT_EVENT" :
(n == E_ERCP_CLIENT_DISCONNECT_EVENT) ? "ERCP_CLIENT_DISCONNECT_EVENT" :
NULL;
}
/*****************************************************************************/
const char *
ercp_msgno_to_str(enum ercp_msg_code n, char *buff, unsigned int buff_size)
{
const char *str = msgno_to_str((unsigned short)n);
if (str == NULL)
{
g_snprintf(buff, buff_size, "[code #%d]", (int)n);
}
else
{
g_snprintf(buff, buff_size, "%s", str);
}
return buff;
}
/*****************************************************************************/
int
ercp_init_trans(struct trans *trans)
{
return libipm_init_trans(trans, LIBIPM_FAC_ERCP, msgno_to_str);
}
/*****************************************************************************/
void
ercp_trans_from_eicp_trans(struct trans *trans,
ttrans_data_in callback_func,
void *callback_data)
{
libipm_change_facility(trans, LIBIPM_FAC_EICP, LIBIPM_FAC_ERCP);
trans->trans_data_in = callback_func;
trans->callback_data = callback_data;
}
/*****************************************************************************/
struct trans *
ercp_connect(const char *port, int (*term_func)(void))
{
struct trans *t;
if ((t = trans_create(TRANS_MODE_UNIX, 128, 128)) != NULL)
{
t->is_term = term_func;
if (trans_connect(t, NULL, port, 3000) != 0)
{
trans_delete(t);
t = NULL;
}
else if (ercp_init_trans(t) != 0)
{
trans_delete(t);
t = NULL;
}
}
return t;
}
/*****************************************************************************/
int
ercp_msg_in_check_available(struct trans *trans, int *available)
{
return libipm_msg_in_check_available(trans, available);
}
/*****************************************************************************/
int
ercp_msg_in_wait_available(struct trans *trans)
{
return libipm_msg_in_wait_available(trans);
}
/*****************************************************************************/
enum ercp_msg_code
ercp_msg_in_get_msgno(const struct trans *trans)
{
return (enum ercp_msg_code)libipm_msg_in_get_msgno(trans);
}
/*****************************************************************************/
void
ercp_msg_in_reset(struct trans *trans)
{
libipm_msg_in_reset(trans);
}
/*****************************************************************************/
int
ercp_send_session_announce_event(struct trans *trans,
const char *display,
uid_t uid,
enum scp_session_type type,
unsigned short start_width,
unsigned short start_height,
unsigned char bpp,
const struct guid *guid,
const char *start_ip_addr,
time_t start_time,
const char *instance_name)
{
struct libipm_fsb guid_descriptor = { (void *)guid, sizeof(*guid) };
return libipm_msg_out_simple_send(
trans,
(int)E_ERCP_SESSION_ANNOUNCE_EVENT,
"siyqqyBsxs",
display,
uid,
type,
start_width,
start_height,
bpp,
&guid_descriptor,
start_ip_addr,
(int64_t)start_time,
instance_name);
}
/*****************************************************************************/
int
ercp_get_session_announce_event(struct trans *trans,
const char **display,
uid_t *uid,
enum scp_session_type *type,
unsigned short *start_width,
unsigned short *start_height,
unsigned char *bpp,
struct guid *guid,
const char **start_ip_addr,
time_t *start_time,
const char **instance_name)
{
/* Intermediate values */
int32_t i_uid;
uint8_t i_type;
uint16_t i_width;
uint16_t i_height;
uint8_t i_bpp;
int64_t i_start_time;
const struct libipm_fsb guid_descriptor = { (void *)guid, sizeof(*guid) };
int rv = libipm_msg_in_parse(
trans,
"siyqqyBsxs",
display,
&i_uid,
&i_type,
&i_width,
&i_height,
&i_bpp,
&guid_descriptor,
start_ip_addr,
&i_start_time,
instance_name);
if (rv == 0)
{
*uid = (uid_t)i_uid;
*type = (enum scp_session_type)i_type;
*start_width = i_width;
*start_height = i_height;
*bpp = i_bpp;
*start_time = (time_t)i_start_time;
}
else
{
*display = "";
}
return rv;
}
/*****************************************************************************/
int
ercp_send_session_finished_event(struct trans *trans)
{
return libipm_msg_out_simple_send(
trans, (int)E_ERCP_SESSION_FINISHED_EVENT, NULL);
}
/*****************************************************************************/
int
ercp_send_connect_session_request(struct trans *trans,
int scp_fd,
const char *client_ip,
const char *client_name,
unsigned int scp_flags)
{
return libipm_msg_out_simple_send(
trans, (int)E_ERCP_CONNECT_SESSION_REQUEST,
"hssu", scp_fd, client_ip, client_name, scp_flags);
}
/*****************************************************************************/
int
ercp_get_connect_session_request(struct trans *trans,
int *scp_fd,
const char **client_ip,
const char **client_name,
unsigned int *scp_flags)
{
/* Intermediate values */
uint32_t i_flags;
int rv = libipm_msg_in_parse(trans, "hssu",
scp_fd, client_ip, client_name, &i_flags);
if (rv == 0)
{
*scp_flags = i_flags;
}
return rv;
}
/*****************************************************************************/
int
ercp_send_client_connect_event(struct trans *trans,
const char *client_ip,
const char *client_name,
time_t connect_time)
{
return libipm_msg_out_simple_send(
trans, (int)E_ERCP_CLIENT_CONNECT_EVENT,
"ssx", client_ip, client_name, (int64_t)connect_time);
}
/*****************************************************************************/
int
ercp_get_client_connect_event(struct trans *trans,
const char **client_ip,
const char **client_name,
time_t *connect_time)
{
/* Intermediate values */
int64_t i_connect_time;
int rv = libipm_msg_in_parse(trans, "ssx",
client_ip, client_name, &i_connect_time);
if (rv == 0)
{
*connect_time = i_connect_time;
}
return rv;
}
/*****************************************************************************/
int
ercp_send_client_disconnect_event(struct trans *trans,
time_t disconnect_time)
{
return libipm_msg_out_simple_send(
trans, (int)E_ERCP_CLIENT_DISCONNECT_EVENT,
"x", (int64_t)disconnect_time);
}
/*****************************************************************************/
int
ercp_get_client_disconnect_event(struct trans *trans,
time_t *disconnect_time)
{
/* Intermediate values */
int64_t i_disconnect_time;
int rv = libipm_msg_in_parse(trans, "x", &i_disconnect_time);
if (rv == 0)
{
*disconnect_time = i_disconnect_time;
}
return rv;
}
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