initially checkin

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 )
+{
+    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;
+}
+
+