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https://github.com/ntop/n2n.git
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101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/**
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* (C) 2007-18 - ntop.org and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not see see <http://www.gnu.org/licenses/>
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*
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*/
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#include "n2n.h"
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#include "n2n_transforms.h"
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static int transop_deinit_null( n2n_trans_op_t * arg )
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{
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/* nothing to deallocate, nothing to release. */
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return 0;
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}
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static int transop_encode_null( n2n_trans_op_t * arg,
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uint8_t * outbuf,
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size_t out_len,
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const uint8_t * inbuf,
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size_t in_len )
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{
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int retval = -1;
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traceEvent( TRACE_DEBUG, "encode_null %lu", in_len );
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if ( out_len >= in_len )
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{
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memcpy( outbuf, inbuf, in_len );
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retval = in_len;
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}
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else
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{
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traceEvent( TRACE_DEBUG, "encode_null %lu too big for packet buffer", in_len );
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}
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return retval;
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}
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static int transop_decode_null( n2n_trans_op_t * arg,
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uint8_t * outbuf,
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size_t out_len,
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const uint8_t * inbuf,
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size_t in_len )
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{
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int retval = -1;
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traceEvent( TRACE_DEBUG, "decode_null %lu", in_len );
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if ( out_len >= in_len )
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{
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memcpy( outbuf, inbuf, in_len );
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retval = in_len;
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}
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else
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{
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traceEvent( TRACE_DEBUG, "decode_null %lu too big for packet buffer", in_len );
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}
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return retval;
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}
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static int transop_addspec_null( n2n_trans_op_t * arg, const n2n_cipherspec_t * cspec )
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{
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return 0;
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}
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static n2n_tostat_t transop_tick_null( n2n_trans_op_t * arg, time_t now )
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{
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n2n_tostat_t r;
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r.can_tx=1;
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r.tx_spec.t = N2N_TRANSFORM_ID_NULL;
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r.tx_spec.valid_from = 0;
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r.tx_spec.valid_until = (time_t)(-1);
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r.tx_spec.opaque_size=0;
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return r;
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}
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void transop_null_init( n2n_trans_op_t * ttt )
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{
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memset(ttt, 0, sizeof(n2n_trans_op_t) );
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ttt->transform_id = N2N_TRANSFORM_ID_NULL;
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ttt->deinit = transop_deinit_null;
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ttt->addspec = transop_addspec_null;
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ttt->tick = transop_tick_null;
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ttt->fwd = transop_encode_null;
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ttt->rev = transop_decode_null;
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}
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