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/*
* protocol.c
* potd is licensed under the BSD license:
*
* Copyright (c) 2018 Toni Uhlig <matzeton@googlemail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - The names of its contributors may not be used to endorse or promote
* products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "protocol.h"
#include "log.h"
#include "socket.h"
int proto_init_ctx(protocol_ctx **ctx, proto_init_cb init_fn)
{
assert(ctx && init_fn);
if (!*ctx)
*ctx = (protocol_ctx *) malloc(sizeof(**ctx));
assert(*ctx);
memset(*ctx, 0, sizeof(**ctx));
if (init_fn(*ctx))
return 1;
return 0;
}
int proto_setup(protocol_ctx *ctx, const char *listen_addr,
const char *listen_port, const char *jail_host,
const char *jail_port)
{
assert(ctx);
if (fwd_setup_server(&ctx->src, listen_addr, listen_port))
return 1;
if (fwd_setup_client_silent(&ctx->dst, jail_host, jail_port))
return 1;
return 0;
}
int proto_listen(protocol_ctx *ctx)
{
if (!ctx->cbs.on_listen)
return 1;
if (ctx->cbs.on_listen(ctx))
return 1;
return 0;
}
int proto_validate_ctx(const protocol_ctx *ctx)
{
assert(ctx);
assert(ctx->cbs.on_listen && ctx->cbs.on_shutdown);
return 0;
}
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