diff options
Diffstat (limited to 'g10/free-packet.c')
| -rw-r--r-- | g10/free-packet.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/g10/free-packet.c b/g10/free-packet.c new file mode 100644 index 000000000..f4f38baa4 --- /dev/null +++ b/g10/free-packet.c @@ -0,0 +1,198 @@ +/* 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 ) +{ + mpi_free( enc->d.rsa.rsa_integer ); + m_free(enc); +} + +void +free_seckey_enc( PKT_signature *enc ) +{ + mpi_free( enc->d.rsa.rsa_integer ); + m_free(enc); +} + +void +free_pubkey_cert( PKT_pubkey_cert *cert ) +{ + mpi_free( cert->d.rsa.rsa_n ); + mpi_free( cert->d.rsa.rsa_e ); + md5_close( cert->mfx.md5 ); + rmd160_close( cert->mfx.rmd160 ); + m_free(cert); +} + +PKT_pubkey_cert * +copy_pubkey_cert( PKT_pubkey_cert *d, PKT_pubkey_cert *s ) +{ + if( !d ) + d = m_alloc(sizeof *d); + memcpy( d, s, sizeof *d ); + 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->mfx.md5 = NULL; + d->mfx.rmd160 =NULL; + return d; +} + +void +free_seckey_cert( PKT_seckey_cert *cert ) +{ + mpi_free( cert->d.rsa.rsa_n ); + mpi_free( cert->d.rsa.rsa_e ); + if( cert->d.rsa.is_protected ) { + m_free( cert->d.rsa.rsa_d ); + m_free( cert->d.rsa.rsa_p ); + m_free( cert->d.rsa.rsa_q ); + m_free( cert->d.rsa.rsa_u ); + } + else { + 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 ); + } + m_free(cert); +} + +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 +free_encr_data( PKT_encr_data *ed ) +{ + 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; + case PKT_PUBKEY_CERT: + free_pubkey_cert( pkt->pkt.pubkey_cert ); + break; + case PKT_SECKEY_CERT: + free_seckey_cert( pkt->pkt.seckey_cert ); + break; + case PKT_COMMENT: + free_comment( pkt->pkt.comment ); + break; + case PKT_USER_ID: + free_user_id( pkt->pkt.user_id ); + break; + case PKT_COMPR_DATA: + free_compressed( pkt->pkt.compressed); + break; + case PKT_ENCR_DATA: + free_encr_data( pkt->pkt.encr_data ); + break; + case PKT_PLAINTEXT: + free_plaintext( pkt->pkt.plaintext ); + break; + default: + m_free( pkt->pkt.generic ); + break; + } + pkt->pkt.generic = NULL; +} + + |