src/common/http_switch.h

/*****************************************************************************\
 *  http_switch.h - Auto switch between HTTP and RPC requests
 *****************************************************************************
 *  Copyright (C) SchedMD LLC.
 *
 *  This file is part of Slurm, a resource management program.
 *  For details, see <https://slurm.schedmd.com/>.
 *  Please also read the included file: DISCLAIMER.
 *
 *  Slurm is free software; you can redistribute it and/or modify it under
 *  the terms of the GNU General Public License as published by the Free
 *  Software Foundation; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  In addition, as a special exception, the copyright holders give permission
 *  to link the code of portions of this program with the OpenSSL library under
 *  certain conditions as described in each individual source file, and
 *  distribute linked combinations including the two. You must obey the GNU
 *  General Public License in all respects for all of the code used other than
 *  OpenSSL. If you modify file(s) with this exception, you may extend this
 *  exception to your version of the file(s), but you are not obligated to do
 *  so. If you do not wish to do so, delete this exception statement from your
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 *  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
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 *  You should have received a copy of the GNU General Public License along
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\*****************************************************************************/

#ifndef SLURM_HTTP_SWITCH_H
#define SLURM_HTTP_SWITCH_H

#include "stdbool.h"

#include "src/conmgr/conmgr.h"

/* True if plugins for HTTP loaded */
extern bool http_switch_http_enabled(void);

/* True if plugins for TLS wrapped HTTP loaded */
extern bool http_switch_tls_enabled(void);

/* Get connection type to switch between HTTP and Slurm RPCs */
extern conmgr_con_type_t http_switch_con_type(void);

/* Get connection flags needed to switch including TLS wrapping */
extern conmgr_con_flags_t http_switch_con_flags(void);

/*
 * Handle switching between HTTP and Slurm RPCs in on_data() callback.
 *
 * Changes mode to CON_TYPE_RPC when fingerprints as Slurm RPC.
 * Calls on_http() when fingerprint matches HTTP.
 *
 * IN con - connection to fingerprint
 * IN on_http - callback to call when fingerprint for HTTP matches
 * RET SLURM_SUCCESS or error
 */
extern int http_switch_on_data(conmgr_fd_t *con,
			       int (*on_http)(conmgr_fd_t *con));

/* Initialize all plugins and state needed for HTTP switching */
extern void http_switch_init(void);
extern void http_switch_fini(void);

#endif