mirror of https://github.com/neutrinolabs/xrdp
libipm: Add ERCP
This commit is contained in:
matt335672
parent
8064a463c9
commit
dec05f91fa
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@ -15,6 +15,8 @@ libipm_la_SOURCES = \
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libipm_private.h \
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libipm_private.h \
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eicp.h \
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eicp.h \
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eicp.c \
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eicp.c \
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ercp.h \
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ercp.c \
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scp.h \
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scp.h \
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scp.c \
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scp.c \
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scp_application_types.h \
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scp_application_types.h \
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@ -0,0 +1,216 @@
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/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2022, all xrdp contributors
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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 libipm/ercp.c
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* @brief ERCP definitions
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* @author Matt Burt
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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 "ercp.h"
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#include "libipm.h"
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#include "guid.h"
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#include "os_calls.h"
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#include "trans.h"
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/*****************************************************************************/
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static const char *
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msgno_to_str(unsigned short n)
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{
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return
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(n == E_ERCP_SESSION_ANNOUNCE_EVENT) ? "ERCP_SESSION_ANNOUNCE_EVENT" :
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(n == E_ERCP_SESSION_FINISHED_EVENT) ? "ERCP_SESSION_FINISHED_EVENT" :
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NULL;
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}
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/*****************************************************************************/
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const char *
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ercp_msgno_to_str(enum ercp_msg_code n, char *buff, unsigned int buff_size)
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{
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const char *str = msgno_to_str((unsigned short)n);
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if (str == NULL)
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{
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g_snprintf(buff, buff_size, "[code #%d]", (int)n);
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}
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else
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{
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g_snprintf(buff, buff_size, "%s", str);
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}
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return buff;
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}
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/*****************************************************************************/
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int
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ercp_init_trans(struct trans *trans)
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{
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return libipm_init_trans(trans, LIBIPM_FAC_ERCP, msgno_to_str);
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}
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/*****************************************************************************/
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void
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ercp_trans_from_eicp_trans(struct trans *trans,
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ttrans_data_in callback_func,
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void *callback_data)
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{
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libipm_change_facility(trans, LIBIPM_FAC_EICP, LIBIPM_FAC_ERCP);
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trans->trans_data_in = callback_func;
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trans->callback_data = callback_data;
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}
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/*****************************************************************************/
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int
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ercp_msg_in_check_available(struct trans *trans, int *available)
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{
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return libipm_msg_in_check_available(trans, available);
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}
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/*****************************************************************************/
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int
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ercp_msg_in_wait_available(struct trans *trans)
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{
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return libipm_msg_in_wait_available(trans);
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}
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/*****************************************************************************/
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enum ercp_msg_code
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ercp_msg_in_get_msgno(const struct trans *trans)
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{
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return (enum ercp_msg_code)libipm_msg_in_get_msgno(trans);
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}
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/*****************************************************************************/
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void
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ercp_msg_in_reset(struct trans *trans)
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{
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libipm_msg_in_reset(trans);
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}
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/*****************************************************************************/
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int
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ercp_send_session_announce_event(struct trans *trans,
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unsigned int display,
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uid_t uid,
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enum scp_session_type type,
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unsigned short start_width,
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unsigned short start_height,
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unsigned char bpp,
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const struct guid *guid,
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const char *start_ip_addr,
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time_t start_time)
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{
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struct libipm_fsb guid_descriptor = { (void *)guid, sizeof(*guid) };
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return libipm_msg_out_simple_send(
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trans,
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(int)E_ERCP_SESSION_ANNOUNCE_EVENT,
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"uiyqqyBsx",
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display,
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uid,
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type,
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start_width,
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start_height,
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bpp,
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&guid_descriptor,
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start_ip_addr,
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start_time);
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}
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/*****************************************************************************/
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int
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ercp_get_session_announce_event(struct trans *trans,
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unsigned int *display,
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uid_t *uid,
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enum scp_session_type *type,
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unsigned short *start_width,
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unsigned short *start_height,
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unsigned char *bpp,
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struct guid *guid,
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const char **start_ip_addr,
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time_t *start_time)
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{
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/* Intermediate values */
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uint32_t i_display;
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int32_t i_uid;
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uint8_t i_type;
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uint16_t i_width;
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uint16_t i_height;
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uint8_t i_bpp;
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int64_t i_start_time;
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const struct libipm_fsb guid_descriptor = { (void *)guid, sizeof(*guid) };
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int rv = libipm_msg_in_parse(
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trans,
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"uiyqqyBsx",
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&i_display,
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&i_uid,
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&i_type,
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&i_width,
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&i_height,
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&i_bpp,
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&guid_descriptor,
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start_ip_addr,
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&i_start_time);
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if (rv == 0)
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{
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if (display != NULL)
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{
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*display = i_display;
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}
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*uid = (uid_t)i_uid;
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*type = (enum scp_session_type)i_type;
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*start_width = i_width;
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*start_height = i_height;
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*bpp = i_bpp;
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*start_time = (time_t)i_start_time;
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}
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return rv;
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}
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/*****************************************************************************/
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int
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ercp_send_session_finished_event(struct trans *trans)
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{
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return libipm_msg_out_simple_send(
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trans, (int)E_ERCP_SESSION_FINISHED_EVENT, NULL);
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}
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/*****************************************************************************/
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int
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ercp_send_session_reconnect_event(struct trans *trans)
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{
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return libipm_msg_out_simple_send(
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trans, (int)E_ERCP_SESSION_RECONNECT_EVENT, NULL);
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}
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@ -0,0 +1,236 @@
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/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2022, all xrdp contributors
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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 libipm/ercp.h
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* @brief ERCP declarations
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* @author Matt Burt
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*
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* Functions in this file use the following naming conventions:-
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*
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* E_ERCP_{msg}_REQUEST is sent by ercp_send_{msg}_request()
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* E_ERCP_{msg}_REQUEST is parsed by ercp_get_{msg}_request()
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* E_ERCP_{msg}_RESPONSE is sent by ercp_send_{msg}_response()
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* E_ERCP_{msg}_RESPONSE is parsed by ercp_get_{msg}_response()
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* E_ERCP_{msg}_EVENT is sent by ercp_send_{msg}_event()
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* E_ERCP_{msg}_EVENT is parsed by ercp_get_{msg}_event()
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*/
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#ifndef ERCP_H
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#define ERCP_H
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#include "arch.h"
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#include "scp_application_types.h"
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#include "trans.h"
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struct guid;
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/* Message codes */
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enum ercp_msg_code
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{
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E_ERCP_SESSION_ANNOUNCE_EVENT,
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E_ERCP_SESSION_FINISHED_EVENT,
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E_ERCP_SESSION_RECONNECT_EVENT
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};
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/* Common facilities */
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/**
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* Convert a message code to a string for output
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* @param n Message code
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* @param buff to contain string
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* @param buff_size length of buff
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* @return buff is returned for convenience.
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*/
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const char *
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ercp_msgno_to_str(enum ercp_msg_code n, char *buff, unsigned int buff_size);
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/* Connection management facilities */
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/**
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* Converts a standard trans connected to an ERCP endpoint to an ERCP transport
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*
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* @param trans connected endpoint
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* @return != 0 for error
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*/
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int
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ercp_init_trans(struct trans *trans);
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/**
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* Converts an EICP transport to an ERCP transport.
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*
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* This is done following successful transmission or receipt of an
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* E_EICP_CREATE_SESSION_REQUEST.
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*
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* @param trans connected endpoint
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* @param callback_func New callback function for ERCP messages.
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* @param callback_data New argument for callback function
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*/
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void
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ercp_trans_from_eicp_trans(struct trans *trans,
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ttrans_data_in callback_func,
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void *callback_data);
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/**
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* Checks an ERCP transport to see if a complete message is
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* available for parsing
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*
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* @param trans ERCP transport
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* @param[out] available != 0 if a complete message is available
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* @return != 0 for error
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*/
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int
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ercp_msg_in_check_available(struct trans *trans, int *available);
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/**
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* Waits on a single transport for an ERCP message to be available for
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* parsing
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*
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* @param trans libipm transport
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* @return != 0 for error
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*
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* While the call is active, data-in callbacks for the transport are
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* disabled.
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*
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* Only use this call if you have nothing to do until a message
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* arrives on the transport. If you have other transports to service, use
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* ercp_msg_in_check_available()
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*/
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int
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ercp_msg_in_wait_available(struct trans *trans);
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/**
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* Gets the ERCP message number of an incoming message
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*
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* @param trans ERCP transport
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* @return message in the buffer
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*
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* The results of calling this routine before ercp_msg_in_check_available()
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* states a message is available are undefined.
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*/
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enum ercp_msg_code
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ercp_msg_in_get_msgno(const struct trans *trans);
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/**
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* Resets an ERCP message buffer ready to receive the next message
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*
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* @param trans libipm transport
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*/
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void
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ercp_msg_in_reset(struct trans *trans);
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/* -------------------- Session event messages-------------------- */
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/**
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* Send an E_ERCP_SESSION_ANNOUNCE_EVENT
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*
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* Direction : sesexec -> sesman
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*
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* This event contains all the information known about a session
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*
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* @param trans EICP transport
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* @param display Display used by session
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* @param uid UID of user logged in to session
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* @param type Session type
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* @param start_width Starting width of seenio
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* @param start_height Starting height of session
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* @param bpp Bits-per-pixel for session
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* @param guid Session GUID
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* @param start_ip_addr Starting IP address of client
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* @param start_time Session start time
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* @return != 0 for error
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*/
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int
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ercp_send_session_announce_event(struct trans *trans,
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unsigned int display,
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uid_t uid,
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enum scp_session_type type,
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unsigned short start_width,
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unsigned short start_height,
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unsigned char bpp,
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const struct guid *guid,
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const char *start_ip_addr,
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time_t start_time);
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/**
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* Parse an incoming E_ERCP_SESSION_ANNOUNCE_EVENT
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*
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* This event contains all the information known about a session
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*
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* @param trans EICP transport
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* @param[out] display Display used by session.
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* Pointer can be NULL if this is already known.
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* @param[out] uid UID of user logged in to session
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* @param[out] type Session type
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* @param[out] start_width Starting width of seenio
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* @param[out] start_height Starting height of session
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* @param[out] bpp Bits-per-pixel for session
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||||||
|
* @param[out] guid Session GUID
|
||||||
|
* @param[out] start_ip_addr Starting IP address of client
|
||||||
|
* @param[out] start_time Session start time
|
||||||
|
* @return != 0 for error
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
ercp_get_session_announce_event(struct trans *trans,
|
||||||
|
unsigned int *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);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Send an E_ERCP_SESSION_FINISHED_EVENT
|
||||||
|
*
|
||||||
|
* Direction : sesexec -> sesman
|
||||||
|
*
|
||||||
|
* This event simply states the attached session has finished and can be
|
||||||
|
* removed from any data structures held by sesman
|
||||||
|
*
|
||||||
|
* @param trans EICP transport
|
||||||
|
* @return != 0 for error
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
ercp_send_session_finished_event(struct trans *trans);
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Send an E_ERCP_SESSION_RECONNECT_EVENT
|
||||||
|
*
|
||||||
|
* Direction : sesman -> sesexec
|
||||||
|
*
|
||||||
|
* This event tells sesexec that a reconnection is about to occur, and
|
||||||
|
* sesexec should run the reconnect script.
|
||||||
|
*
|
||||||
|
* @param trans EICP transport
|
||||||
|
* @return != 0 for error
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
ercp_send_session_reconnect_event(struct trans *trans);
|
||||||
|
|
||||||
|
|
||||||
|
#endif /* ERCP_H */
|
||||||
|
|
@ -29,6 +29,7 @@ enum libipm_facility
|
||||||
{
|
{
|
||||||
LIBIPM_FAC_SCP = 1, /**< SCP - Sesman Control Protocol */
|
LIBIPM_FAC_SCP = 1, /**< SCP - Sesman Control Protocol */
|
||||||
LIBIPM_FAC_EICP, /**< EICP - Executive Initialization Control Protocol */
|
LIBIPM_FAC_EICP, /**< EICP - Executive Initialization Control Protocol */
|
||||||
|
LIBIPM_FAC_ERCP, /**< ERCP - Executive Run-time Control Protocol */
|
||||||
|
|
||||||
LIBIPM_FAC_TEST = 65535 /**< Used for unit testing */
|
LIBIPM_FAC_TEST = 65535 /**< Used for unit testing */
|
||||||
};
|
};
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue