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gnupg/g10/free-packet.c

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/* free-packet.c - cleanup stuff for packets
* Copyright (c) 1997 by Werner Koch (dd9jn)
*
* This file is part of G10.
*
* G10 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.
*
* G10 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "packet.h"
#include "iobuf.h"
#include "mpi.h"
#include "util.h"
#include "cipher.h"
#include "memory.h"
void
free_pubkey_enc( PKT_pubkey_enc *enc )
{
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if( enc->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
mpi_free( enc->d.elg.a );
mpi_free( enc->d.elg.b );
}
else if( enc->pubkey_algo == PUBKEY_ALGO_RSA )
mpi_free( enc->d.rsa.rsa_integer );
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m_free(enc);
}
void
free_seckey_enc( PKT_signature *enc )
{
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if( enc->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
mpi_free( enc->d.elg.a );
mpi_free( enc->d.elg.b );
}
else if( enc->pubkey_algo == PUBKEY_ALGO_RSA )
mpi_free( enc->d.rsa.rsa_integer );
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m_free(enc);
}
void
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free_public_cert( PKT_public_cert *cert )
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{
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if( cert->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
mpi_free( cert->d.elg.p );
mpi_free( cert->d.elg.g );
mpi_free( cert->d.elg.y );
}
else if( cert->pubkey_algo == PUBKEY_ALGO_RSA ) {
mpi_free( cert->d.rsa.rsa_n );
mpi_free( cert->d.rsa.rsa_e );
}
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md5_close( cert->mfx.md5 );
rmd160_close( cert->mfx.rmd160 );
m_free(cert);
}
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PKT_public_cert *
copy_public_cert( PKT_public_cert *d, PKT_public_cert *s )
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{
if( !d )
d = m_alloc(sizeof *d);
memcpy( d, s, sizeof *d );
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if( s->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
d->d.elg.p = mpi_copy( s->d.elg.p );
d->d.elg.g = mpi_copy( s->d.elg.g );
d->d.elg.y = mpi_copy( s->d.elg.y );
}
else if( s->pubkey_algo == PUBKEY_ALGO_RSA ) {
d->d.rsa.rsa_n = mpi_copy( s->d.rsa.rsa_n );
d->d.rsa.rsa_e = mpi_copy( s->d.rsa.rsa_e );
}
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d->mfx.md5 = NULL;
d->mfx.rmd160 =NULL;
return d;
}
void
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free_secret_cert( PKT_secret_cert *cert )
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{
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if( cert->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
mpi_free( cert->d.elg.p );
mpi_free( cert->d.elg.g );
mpi_free( cert->d.elg.y );
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mpi_free( cert->d.elg.x );
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}
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else if( cert->pubkey_algo == PUBKEY_ALGO_RSA ) {
mpi_free( cert->d.rsa.rsa_n );
mpi_free( cert->d.rsa.rsa_e );
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mpi_free( cert->d.rsa.rsa_d );
mpi_free( cert->d.rsa.rsa_p );
mpi_free( cert->d.rsa.rsa_q );
mpi_free( cert->d.rsa.rsa_u );
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}
m_free(cert);
}
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PKT_secret_cert *
copy_secret_cert( PKT_secret_cert *d, PKT_secret_cert *s )
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{
if( !d )
d = m_alloc(sizeof *d);
memcpy( d, s, sizeof *d );
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if( s->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
d->d.elg.p = mpi_copy( s->d.elg.p );
d->d.elg.g = mpi_copy( s->d.elg.g );
d->d.elg.y = mpi_copy( s->d.elg.y );
d->d.elg.x = mpi_copy( s->d.elg.x );
}
else if( s->pubkey_algo == PUBKEY_ALGO_RSA ) {
d->d.rsa.rsa_n = mpi_copy( s->d.rsa.rsa_n );
d->d.rsa.rsa_e = mpi_copy( s->d.rsa.rsa_e );
d->d.rsa.rsa_d = mpi_copy( s->d.rsa.rsa_d );
d->d.rsa.rsa_p = mpi_copy( s->d.rsa.rsa_p );
d->d.rsa.rsa_q = mpi_copy( s->d.rsa.rsa_q );
d->d.rsa.rsa_u = mpi_copy( s->d.rsa.rsa_u );
}
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return d;
}
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void
free_comment( PKT_comment *rem )
{
m_free(rem);
}
void
free_user_id( PKT_user_id *uid )
{
m_free(uid);
}
void
free_compressed( PKT_compressed *zd )
{
if( zd->buf ) { /* have to skip some bytes */
/* don't have any informations about the length, so
* we assume this is the last packet */
while( iobuf_get(zd->buf) != -1 )
;
}
m_free(zd);
}
void
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free_encrypted( PKT_encrypted *ed )
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{
if( ed->buf ) { /* have to skip some bytes */
if( iobuf_in_block_mode(ed->buf) ) {
while( iobuf_get(ed->buf) != -1 )
;
iobuf_set_block_mode(ed->buf, 0);
}
else {
for( ; ed->len; ed->len-- ) /* skip the packet */
iobuf_get(ed->buf);
}
}
m_free(ed);
}
void
free_plaintext( PKT_plaintext *pt )
{
if( pt->buf ) { /* have to skip some bytes */
if( iobuf_in_block_mode(pt->buf) ) {
while( iobuf_get(pt->buf) != -1 )
;
iobuf_set_block_mode(pt->buf, 0);
}
else {
for( ; pt->len; pt->len-- ) /* skip the packet */
iobuf_get(pt->buf);
}
}
m_free(pt);
}
/****************
* Free the packet in pkt.
*/
void
free_packet( PACKET *pkt )
{
if( !pkt || !pkt->pkt.generic )
return;
if( DBG_MEMORY )
log_debug("free_packet() type=%d\n", pkt->pkttype );
switch( pkt->pkttype ) {
case PKT_SIGNATURE:
free_seckey_enc( pkt->pkt.signature );
break;
case PKT_PUBKEY_ENC:
free_pubkey_enc( pkt->pkt.pubkey_enc );
break;
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case PKT_PUBLIC_CERT:
free_public_cert( pkt->pkt.public_cert );
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break;
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case PKT_SECRET_CERT:
free_secret_cert( pkt->pkt.secret_cert );
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break;
case PKT_COMMENT:
free_comment( pkt->pkt.comment );
break;
case PKT_USER_ID:
free_user_id( pkt->pkt.user_id );
break;
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case PKT_COMPRESSED:
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free_compressed( pkt->pkt.compressed);
break;
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case PKT_ENCRYPTED:
free_encrypted( pkt->pkt.encrypted );
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break;
case PKT_PLAINTEXT:
free_plaintext( pkt->pkt.plaintext );
break;
default:
m_free( pkt->pkt.generic );
break;
}
pkt->pkt.generic = NULL;
}