gnupg/g10/keylist.c

/* keylist.c
 * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003,
 *               2004, 2005 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG 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 3 of the License, or
 * (at your option) any later version.
 *
 * GnuPG 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, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>

#include "options.h"
#include "packet.h"
#include "errors.h"
#include "keydb.h"
#include "memory.h"
#include "photoid.h"
#include "util.h"
#include "ttyio.h"
#include "trustdb.h"
#include "main.h"
#include "i18n.h"
#include "status.h"

static void list_all(int);
static void list_one( STRLIST names, int secret);
static void print_card_serialno (PKT_secret_key *sk);

struct sig_stats
{
  int inv_sigs;
  int no_key;
  int oth_err;
};

static FILE *attrib_fp=NULL;

/****************
 * List the keys
 * If list is NULL, all available keys are listed
 */
void
public_key_list( STRLIST list )
{
  if(opt.with_colons)
    {
      byte trust_model,marginals,completes,cert_depth;
      ulong created,nextcheck;

      read_trust_options(&trust_model,&created,&nextcheck,
			 &marginals,&completes,&cert_depth);

      printf("tru:");

      if(nextcheck && nextcheck <= make_timestamp())
	printf("o");
      if(trust_model!=opt.trust_model)
	printf("t");
      if(opt.trust_model==TM_PGP || opt.trust_model==TM_CLASSIC)
	{
	  if(marginals!=opt.marginals_needed)
	    printf("m");
	  if(completes!=opt.completes_needed)
	    printf("c");
	  if(cert_depth!=opt.max_cert_depth)
	    printf("d");
	}

      printf(":%d:%lu:%lu",trust_model,created,nextcheck);

      /* Only show marginals, completes, and cert_depth in the classic
	 or PGP trust models since they are not meaningful
	 otherwise. */

      if(trust_model==TM_PGP || trust_model==TM_CLASSIC)
	printf(":%d:%d:%d",marginals,completes,cert_depth);

      printf("\n");
    }

  /* We need to do the stale check right here because it might need to
     update the keyring while we already have the keyring open.  This
     is very bad for W32 because of a sharing violation. For real OSes
     it might lead to false results if we are later listing a keyring
     which is associated with the inode of a deleted file.  */
  check_trustdb_stale ();

  if( !list )
    list_all(0);
  else
    list_one( list, 0 );
}

void
secret_key_list( STRLIST list )
{
    check_trustdb_stale ();

    if( !list )
	list_all(1);
    else  /* List by user id */
	list_one( list, 1 );
}

void
print_seckey_info (PKT_secret_key *sk)
{
  u32 keyid[2];
  char *p;

  keyid_from_sk (sk, keyid);
  p=get_user_id_native(keyid);

  tty_printf ("\nsec  %4u%c/%s %s %s\n",
	      nbits_from_sk (sk),
	      pubkey_letter (sk->pubkey_algo),
	      keystr(keyid), datestr_from_sk (sk), p);
    
  xfree (p);
}

/* Print information about the public key.  With FP passed as NULL,
   the tty output interface is used, otherwise output is directted to
   the given stream. */
void
print_pubkey_info (FILE *fp, PKT_public_key *pk)
{
  u32 keyid[2];
  char *p;

  keyid_from_pk (pk, keyid);

  /* If the pk was chosen by a particular user ID, that is the one to
     print. */
  if(pk->user_id)
    p=utf8_to_native(pk->user_id->name,pk->user_id->len,0);
  else
    p=get_user_id_native(keyid);

  if (fp)
    fprintf (fp, "pub  %4u%c/%s %s %s\n",
             nbits_from_pk (pk),
             pubkey_letter (pk->pubkey_algo),
             keystr(keyid), datestr_from_pk (pk), p);
  else
    tty_printf ("\npub  %4u%c/%s %s %s\n",
                nbits_from_pk (pk), pubkey_letter (pk->pubkey_algo),
                keystr(keyid), datestr_from_pk (pk), p);

  xfree (p);
}


/* Print basic information of a secret key including the card serial
   number information. */
void
print_card_key_info (FILE *fp, KBNODE keyblock)
{
  KBNODE node;
  int i;

  for (node = keyblock; node; node = node->next ) 
    {
      if (node->pkt->pkttype == PKT_SECRET_KEY
          || (node->pkt->pkttype == PKT_SECRET_SUBKEY) )
        {
          PKT_secret_key *sk = node->pkt->pkt.secret_key;
          
          tty_fprintf (fp, "%s%c  %4u%c/%s  ",
		       node->pkt->pkttype == PKT_SECRET_KEY? "sec":"ssb",
                       (sk->protect.s2k.mode==1001)?'#':
                       (sk->protect.s2k.mode==1002)?'>':' ',
		       nbits_from_sk (sk),
		       pubkey_letter (sk->pubkey_algo),
		       keystr_from_sk(sk));
          tty_fprintf (fp, _("created: %s"), datestr_from_sk (sk));
          tty_fprintf (fp, "  ");
          tty_fprintf (fp, _("expires: %s"), expirestr_from_sk (sk));
          if (sk->is_protected && sk->protect.s2k.mode == 1002)
            {
              tty_fprintf (fp, "\n                      ");
              tty_fprintf (fp, _("card-no: ")); 
              if (sk->protect.ivlen == 16
                  && !memcmp (sk->protect.iv, "\xD2\x76\x00\x01\x24\x01", 6))
                { 
                  /* This is an OpenPGP card. */
                  for (i=8; i < 14; i++)
                    {
                      if (i == 10)
                        tty_fprintf (fp, " ");
                      tty_fprintf (fp, "%02X", sk->protect.iv[i]);
                    }
                }
              else
                { /* Something is wrong: Print all. */
                  for (i=0; i < sk->protect.ivlen; i++)
                    tty_fprintf (fp, "%02X", sk->protect.iv[i]);
                }
            }
          tty_fprintf (fp, "\n");
        }
    }
}



/* Flags = 0x01 hashed 0x02 critical */
static void
status_one_subpacket(sigsubpkttype_t type,size_t len,int flags,const byte *buf)
{
  char status[40];

  /* Don't print these. */
  if(len>256)
    return;

  sprintf(status,"%d %u %u ",type,flags,(unsigned int)len);

  write_status_text_and_buffer(STATUS_SIG_SUBPACKET,status,buf,len,0);
}

/*
  mode=0 for stdout.
  mode=1 for log_info + status messages
  mode=2 for status messages only
*/

void
show_policy_url(PKT_signature *sig,int indent,int mode)
{
  const byte *p;
  size_t len;
  int seq=0,crit;
  FILE *fp=mode?log_stream():stdout;

  while((p=enum_sig_subpkt(sig->hashed,SIGSUBPKT_POLICY,&len,&seq,&crit)))
    {
      if(mode!=2)
	{
	  int i;
	  const char *str;

	  for(i=0;i<indent;i++)
	    putchar(' ');

	  if(crit)
	    str=_("Critical signature policy: ");
	  else
	    str=_("Signature policy: ");
	  if(mode)
	    log_info("%s",str);
	  else
	    printf("%s",str);
	  print_utf8_string(fp,p,len);
	  fprintf(fp,"\n");
	}

      if(mode)
	write_status_buffer ( STATUS_POLICY_URL, p, len, 0 );
    }
}

/*
  mode=0 for stdout.
  mode=1 for log_info + status messages
  mode=2 for status messages only
*/
/* TODO: use this */
void
show_keyserver_url(PKT_signature *sig,int indent,int mode)
{
  const byte *p;
  size_t len;
  int seq=0,crit;
  FILE *fp=mode?log_stream():stdout;

  while((p=enum_sig_subpkt(sig->hashed,SIGSUBPKT_PREF_KS,&len,&seq,&crit)))
    {
      if(mode!=2)
	{
	  int i;
	  const char *str;

	  for(i=0;i<indent;i++)
	    putchar(' ');

	  if(crit)
	    str=_("Critical preferred keyserver: ");
	  else
	    str=_("Preferred keyserver: ");
	  if(mode)
	    log_info("%s",str);
	  else
	    printf("%s",str);
	  print_utf8_string(fp,p,len);
	  fprintf(fp,"\n");
	}

      if(mode)
	status_one_subpacket(SIGSUBPKT_PREF_KS,len,(crit?0x02:0)|0x01,p);
    }
}

/*
  mode=0 for stdout.
  mode=1 for log_info + status messages
  mode=2 for status messages only

  which bits:
  1 == standard notations
  2 == user notations
*/

void
show_notation(PKT_signature *sig,int indent,int mode,int which)
{
  FILE *fp=mode?log_stream():stdout;
  struct notation *nd,*notations;

  if(which==0)
    which=3;

  notations=sig_to_notation(sig);

  /* There may be multiple notations in the same sig. */
  for(nd=notations;nd;nd=nd->next)
    {
      if(mode!=2)
	{
	  int has_at=!!strchr(nd->name,'@');

	  if((which&1 && !has_at) || (which&2 && has_at))
	    {
	      int i;
	      const char *str;

	      for(i=0;i<indent;i++)
		putchar(' ');

	      if(nd->flags.critical)
		str=_("Critical signature notation: ");
	      else
		str=_("Signature notation: ");
	      if(mode)
		log_info("%s",str);
	      else
		printf("%s",str);
	      /* This is all UTF8 */
	      print_utf8_string(fp,nd->name,strlen(nd->name));
	      fprintf(fp,"=");
	      print_utf8_string(fp,nd->value,strlen(nd->value));
	      fprintf(fp,"\n");
	    }
	}

      if(mode)
	{
	  write_status_buffer(STATUS_NOTATION_NAME,
			      nd->name,strlen(nd->name),0);
	  write_status_buffer(STATUS_NOTATION_DATA,
			      nd->value,strlen(nd->value),50);
	}
    }

  free_notation(notations);
}

static void
print_signature_stats(struct sig_stats *s)
{
  if( s->inv_sigs == 1 )
    tty_printf(_("1 bad signature\n") );
  else if( s->inv_sigs )
    tty_printf(_("%d bad signatures\n"), s->inv_sigs );
  if( s->no_key == 1 )
    tty_printf(_("1 signature not checked due to a missing key\n") );
  else if( s->no_key )
    tty_printf(_("%d signatures not checked due to missing keys\n"),s->no_key);
  if( s->oth_err == 1 )
    tty_printf(_("1 signature not checked due to an error\n") );
  else if( s->oth_err )
    tty_printf(_("%d signatures not checked due to errors\n"), s->oth_err );
}

static void
list_all( int secret )
{
    KEYDB_HANDLE hd;
    KBNODE keyblock = NULL;
    int rc=0;
    const char *lastresname, *resname;
    struct sig_stats stats;

    memset(&stats,0,sizeof(stats));

    hd = keydb_new (secret);
    if (!hd)
        rc = G10ERR_GENERAL;
    else
        rc = keydb_search_first (hd);
    if( rc ) {
	if( rc != -1 )
	    log_error("keydb_search_first failed: %s\n", g10_errstr(rc) );
	goto leave;
    }

    lastresname = NULL;
    do {
        rc = keydb_get_keyblock (hd, &keyblock);
        if (rc) {
            log_error ("keydb_get_keyblock failed: %s\n", g10_errstr(rc));
            goto leave;
        }
	if(!opt.with_colons)
	  {
	    resname = keydb_get_resource_name (hd);
	    if (lastresname != resname )
	      {
		int i;

		printf("%s\n", resname );
		for(i=strlen(resname); i; i-- )
		  putchar('-');
		putchar('\n');
		lastresname = resname;
	      }
	  }
        merge_keys_and_selfsig( keyblock );
	list_keyblock( keyblock, secret, opt.fingerprint,
		       opt.check_sigs?&stats:NULL);
	release_kbnode( keyblock ); 
        keyblock = NULL;
    } while (!(rc = keydb_search_next (hd)));
    if( rc && rc != -1 )
	log_error ("keydb_search_next failed: %s\n", g10_errstr(rc));

    if(opt.check_sigs && !opt.with_colons)
      print_signature_stats(&stats);

  leave:
    release_kbnode (keyblock);
    keydb_release (hd);
}


static void
list_one( STRLIST names, int secret )
{
    int rc = 0;
    KBNODE keyblock = NULL;
    GETKEY_CTX ctx;
    const char *resname;
    const char *keyring_str = _("Keyring");
    int i;
    struct sig_stats stats;

    memset(&stats,0,sizeof(stats));

    /* fixme: using the bynames function has the disadvantage that we
     * don't know wether one of the names given was not found.  OTOH,
     * this function has the advantage to list the names in the
     * sequence as defined by the keyDB and does not duplicate
     * outputs.  A solution could be do test whether all given have
     * been listed (this needs a way to use the keyDB search
     * functions) or to have the search function return indicators for
     * found names.  Yet another way is to use the keydb search
     * facilities directly. */
    if( secret ) {
	rc = get_seckey_bynames( &ctx, NULL, names, &keyblock );
	if( rc ) {
	    log_error("error reading key: %s\n",  g10_errstr(rc) );
	    get_seckey_end( ctx );
	    return;
	}
	do {
	    if ((opt.list_options&LIST_SHOW_KEYRING) && !opt.with_colons) {
		resname = keydb_get_resource_name (get_ctx_handle(ctx));
		printf("%s: %s\n", keyring_str, resname);
		for(i = strlen(resname) + strlen(keyring_str) + 2; i; i-- )
		    putchar('-');
		putchar('\n');
	    }
	    list_keyblock( keyblock, 1, opt.fingerprint, NULL );
	    release_kbnode( keyblock );
	} while( !get_seckey_next( ctx, NULL, &keyblock ) );
	get_seckey_end( ctx );
    }
    else {
	rc = get_pubkey_bynames( &ctx, NULL, names, &keyblock );
	if( rc ) {
	    log_error("error reading key: %s\n", g10_errstr(rc) );
	    get_pubkey_end( ctx );
	    return;
	}
	do {
	  if ((opt.list_options&LIST_SHOW_KEYRING) && !opt.with_colons) {
		resname = keydb_get_resource_name (get_ctx_handle(ctx));
		printf("%s: %s\n", keyring_str, resname);
		for(i = strlen(resname) + strlen(keyring_str) + 2; i; i-- )
		    putchar('-');
		putchar('\n');
	    }
	    list_keyblock( keyblock, 0, opt.fingerprint,
			   opt.check_sigs?&stats:NULL );
	    release_kbnode( keyblock );
	} while( !get_pubkey_next( ctx, NULL, &keyblock ) );
	get_pubkey_end( ctx );
    }

    if(opt.check_sigs && !opt.with_colons)
      print_signature_stats(&stats);
}

static void
print_key_data( PKT_public_key *pk )
{
    int n = pk ? pubkey_get_npkey( pk->pubkey_algo ) : 0;
    int i;

    for(i=0; i < n; i++ ) {
	printf("pkd:%d:%u:", i, mpi_get_nbits( pk->pkey[i] ) );
	mpi_print(stdout, pk->pkey[i], 1 );
	putchar(':');
	putchar('\n');
    }
}

static void
print_capabilities (PKT_public_key *pk, PKT_secret_key *sk, KBNODE keyblock)
{
  if(pk || (sk && sk->protect.s2k.mode!=1001))
    {
      unsigned int use = pk? pk->pubkey_usage : sk->pubkey_usage;
    
      if ( use & PUBKEY_USAGE_ENC )
        putchar ('e');

      if ( use & PUBKEY_USAGE_SIG )
	{
	  putchar ('s');
	  if( pk? pk->is_primary : sk->is_primary )
	    putchar ('c');
	}

      if ( (use & PUBKEY_USAGE_AUTH) )
        putchar ('a');
    }

    if ( keyblock ) { /* figure out the usable capabilities */
        KBNODE k;
        int enc=0, sign=0, cert=0, auth=0, disabled=0;

        for (k=keyblock; k; k = k->next ) {
            if ( k->pkt->pkttype == PKT_PUBLIC_KEY 
                 || k->pkt->pkttype == PKT_PUBLIC_SUBKEY ) {
                pk = k->pkt->pkt.public_key;

		if(pk->is_primary)
		  disabled=pk_is_disabled(pk);

                if ( pk->is_valid && !pk->is_revoked && !pk->has_expired ) {
                    if ( pk->pubkey_usage & PUBKEY_USAGE_ENC )
                        enc = 1;
                    if ( pk->pubkey_usage & PUBKEY_USAGE_SIG )
		      {
			sign = 1;
			if(pk->is_primary)
			  cert = 1;
		      }
                    if ( (pk->pubkey_usage & PUBKEY_USAGE_AUTH) )
                      auth = 1;
                }
            }
            else if ( k->pkt->pkttype == PKT_SECRET_KEY 
                      || k->pkt->pkttype == PKT_SECRET_SUBKEY ) {
                sk = k->pkt->pkt.secret_key;
                if ( sk->is_valid && !sk->is_revoked && !sk->has_expired
		     && sk->protect.s2k.mode!=1001 ) {
                    if ( sk->pubkey_usage & PUBKEY_USAGE_ENC )
                        enc = 1;
                    if ( sk->pubkey_usage & PUBKEY_USAGE_SIG )
		      {
			sign = 1;
			if(sk->is_primary)
			  cert = 1;
		      }
                    if ( (sk->pubkey_usage & PUBKEY_USAGE_AUTH) )
                        auth = 1;
                }
            }
        }
        if (enc)
            putchar ('E');
        if (sign)
            putchar ('S');
        if (cert)
            putchar ('C');
        if (auth)
            putchar ('A');
        if (disabled)
            putchar ('D');
    }

    putchar(':');
}

/* Flags = 0x01 hashed 0x02 critical */
static void
print_one_subpacket(sigsubpkttype_t type,size_t len,int flags,const byte *buf)
{
  size_t i;

  printf("spk:%d:%u:%u:",type,flags,(unsigned int)len);

  for(i=0;i<len;i++)
    {
      /* printable ascii other than : and % */
      if(buf[i]>=32 && buf[i]<=126 && buf[i]!=':' && buf[i]!='%')
	printf("%c",buf[i]);
      else
	printf("%%%02X",buf[i]);
    }

  printf("\n");
}

void
print_subpackets_colon(PKT_signature *sig)
{
  byte *i;

  assert(opt.show_subpackets);

  for(i=opt.show_subpackets;*i;i++)
    {
      const byte *p;
      size_t len;
      int seq,crit;

      seq=0;

      while((p=enum_sig_subpkt(sig->hashed,*i,&len,&seq,&crit)))
	print_one_subpacket(*i,len,0x01|(crit?0x02:0),p);

      seq=0;

      while((p=enum_sig_subpkt(sig->unhashed,*i,&len,&seq,&crit)))
	print_one_subpacket(*i,len,0x00|(crit?0x02:0),p);
    }
}

void
dump_attribs(const PKT_user_id *uid,PKT_public_key *pk,PKT_secret_key *sk)
{
  int i;

  if(!attrib_fp)
    return;

  for(i=0;i<uid->numattribs;i++)
    {
      if(is_status_enabled())
	{
	  byte array[MAX_FINGERPRINT_LEN], *p;
	  char buf[(MAX_FINGERPRINT_LEN*2)+90];
	  size_t j,n;

	  if(pk)
	    fingerprint_from_pk( pk, array, &n );
	  else if(sk)
	    fingerprint_from_sk( sk, array, &n );
	  else
	    BUG();

	  p = array;
	  for(j=0; j < n ; j++, p++ )
	    sprintf(buf+2*j, "%02X", *p );

	  sprintf(buf+strlen(buf)," %lu %u %u %u %lu %lu %u",
		  (ulong)uid->attribs[i].len,uid->attribs[i].type,i+1,
		  uid->numattribs,(ulong)uid->created,(ulong)uid->expiredate,
		  ((uid->is_primary?0x01:0)|
		   (uid->is_revoked?0x02:0)|
		   (uid->is_expired?0x04:0)));
	  write_status_text(STATUS_ATTRIBUTE,buf);
	}

      fwrite(uid->attribs[i].data,uid->attribs[i].len,1,attrib_fp);
    }
}

static void
list_keyblock_print ( KBNODE keyblock, int secret, int fpr, void *opaque )
{
    int rc = 0;
    KBNODE kbctx;
    KBNODE node;
    PKT_public_key *pk;
    PKT_secret_key *sk;
    struct sig_stats *stats=opaque;
    int skip_sigs=0;

    /* get the keyid from the keyblock */
    node = find_kbnode( keyblock, secret? PKT_SECRET_KEY : PKT_PUBLIC_KEY );
    if( !node ) {
	log_error("Oops; key lost!\n");
	dump_kbnode( keyblock );
	return;
    }

    if( secret )
      {
	pk = NULL;
	sk = node->pkt->pkt.secret_key;

        printf("sec%c  %4u%c/%s %s",(sk->protect.s2k.mode==1001)?'#':
	       (sk->protect.s2k.mode==1002)?'>':' ',
	       nbits_from_sk( sk ),pubkey_letter( sk->pubkey_algo ),
	       keystr_from_sk(sk),datestr_from_sk( sk ));

	if(sk->has_expired)
	  {
	    printf(" [");
	    printf(_("expired: %s"),expirestr_from_sk(sk));
	    printf("]");
	  }
	else if(sk->expiredate )
	  {
	    printf(" [");
	    printf(_("expires: %s"),expirestr_from_sk(sk));
	    printf("]");
	  }

	printf("\n");
      }
    else
      {
	pk = node->pkt->pkt.public_key;
	sk = NULL;

	check_trustdb_stale();

	printf("pub   %4u%c/%s %s",
	       nbits_from_pk(pk),pubkey_letter(pk->pubkey_algo),
	       keystr_from_pk(pk),datestr_from_pk( pk ));

	/* We didn't include this before in the key listing, but there
	   is room in the new format, so why not? */

	if(pk->is_revoked)
	  {
	    printf(" [");
	    printf(_("revoked: %s"),revokestr_from_pk(pk));
	    printf("]");
	  }
	else if(pk->has_expired)
	  {
	    printf(" [");
	    printf(_("expired: %s"),expirestr_from_pk(pk));
	    printf("]");
	  }
	else if(pk->expiredate)
	  {
	    printf(" [");
	    printf(_("expires: %s"),expirestr_from_pk(pk));
	    printf("]");
	  }

#if 0
	/* I need to think about this some more.  It's easy enough to
	   include, but it looks sort of confusing in the
	   listing... */
	if(opt.list_options&LIST_SHOW_VALIDITY)
	  {
	    int validity=get_validity(pk,NULL);
	    printf(" [%s]",trust_value_to_string(validity));
	  }
#endif

	printf("\n");
      }

    if( fpr )
      print_fingerprint( pk, sk, 0 );
    print_card_serialno (sk);
    if( opt.with_key_data )
      print_key_data( pk );

    for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
	if( node->pkt->pkttype == PKT_USER_ID && !opt.fast_list_mode ) {
	    PKT_user_id *uid=node->pkt->pkt.user_id;

	    if(pk && (uid->is_expired || uid->is_revoked)
	       && !(opt.list_options&LIST_SHOW_UNUSABLE_UIDS))
	      {
		skip_sigs=1;
		continue;
	      }
	    else
	      skip_sigs=0;

	    if(attrib_fp && uid->attrib_data!=NULL)
	      dump_attribs(uid,pk,sk);

	    if((uid->is_revoked || uid->is_expired)
	       || ((opt.list_options&LIST_SHOW_UID_VALIDITY) && pk))
	      {
		const char *validity;
		int indent;

		validity=uid_trust_string_fixed(pk,uid);
		indent=(keystrlen()+9)-atoi(uid_trust_string_fixed(NULL,NULL));

		if(indent<0 || indent>40)
		  indent=0;

		printf("uid%*s%s ",indent,"",validity);
	      }
	    else
	      printf("uid%*s", (int)keystrlen()+10,"");

            print_utf8_string( stdout, uid->name, uid->len );
	    putchar('\n');

	    if((opt.list_options&LIST_SHOW_PHOTOS) && uid->attribs!=NULL)
	      show_photos(uid->attribs,uid->numattribs,pk,sk);
	}
	else if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY )
	  {
	    PKT_public_key *pk2 = node->pkt->pkt.public_key;

	    if((pk2->is_revoked || pk2->has_expired)
	       && !(opt.list_options&LIST_SHOW_UNUSABLE_SUBKEYS))
	      {
		skip_sigs=1;
		continue;
	      }
	    else
	      skip_sigs=0;

            printf("sub   %4u%c/%s %s",
		   nbits_from_pk( pk2 ),pubkey_letter( pk2->pubkey_algo ),
		   keystr_from_pk(pk2),datestr_from_pk(pk2));
	    if( pk2->is_revoked )
	      {
		printf(" [");
		printf(_("revoked: %s"),revokestr_from_pk(pk2));
		printf("]");
	      }
	    else if( pk2->has_expired )
	      {
		printf(" [");
		printf(_("expired: %s"),expirestr_from_pk(pk2));
		printf("]");
	      }
	    else if( pk2->expiredate )
	      {
		printf(" [");
		printf(_("expires: %s"),expirestr_from_pk(pk2));
		printf("]");
	      }
            putchar('\n');
	    if( fpr > 1 )
	      print_fingerprint( pk2, NULL, 0 );
	    if( opt.with_key_data )
	      print_key_data( pk2 );
	  }
	else if( node->pkt->pkttype == PKT_SECRET_SUBKEY )
	  {
	    PKT_secret_key *sk2 = node->pkt->pkt.secret_key;

            printf("ssb%c  %4u%c/%s %s",
                   (sk2->protect.s2k.mode==1001)?'#':
                   (sk2->protect.s2k.mode==1002)?'>':' ',
		   nbits_from_sk( sk2 ),pubkey_letter( sk2->pubkey_algo ),
		   keystr_from_sk(sk2),datestr_from_sk( sk2 ) );
            if( sk2->expiredate )
	      {
		printf(" [");
		printf(_("expires: %s"),expirestr_from_sk(sk2));
		printf("]");
	      }
	    putchar('\n');
	    if( fpr > 1 )
              {
                print_fingerprint( NULL, sk2, 0 );
                print_card_serialno (sk2);
              }
	  }
	else if( opt.list_sigs
		 && node->pkt->pkttype == PKT_SIGNATURE
		 && !skip_sigs ) {
	    PKT_signature *sig = node->pkt->pkt.signature;
	    int sigrc;
            char *sigstr;

	    if( stats ) {
                /*fflush(stdout);*/
		rc = check_key_signature( keyblock, node, NULL );
		switch( rc ) {
		 case 0:		 sigrc = '!'; break;
		 case G10ERR_BAD_SIGN:   stats->inv_sigs++; sigrc = '-'; break;
		 case G10ERR_NO_PUBKEY: 
		 case G10ERR_UNU_PUBKEY: stats->no_key++; continue;
		 default:		 stats->oth_err++; sigrc = '%'; break;
		}

		/* TODO: Make sure a cached sig record here still has
                   the pk that issued it.  See also
                   keyedit.c:print_and_check_one_sig */
	    }
	    else {
		rc = 0;
		sigrc = ' ';
	    }

	    if( sig->sig_class == 0x20 || sig->sig_class == 0x28
				       || sig->sig_class == 0x30 )
	       sigstr = "rev";
	    else if( (sig->sig_class&~3) == 0x10 )
	       sigstr = "sig";
	    else if( sig->sig_class == 0x18 )
	       sigstr = "sig";
	    else if( sig->sig_class == 0x1F )
	       sigstr = "sig";
	    else {
                printf("sig                             "
		       "[unexpected signature class 0x%02x]\n",sig->sig_class );
		continue;
	    }

            fputs( sigstr, stdout );
	    printf("%c%c %c%c%c%c%c%c %s %s",
                   sigrc,(sig->sig_class-0x10>0 &&
                          sig->sig_class-0x10<4)?'0'+sig->sig_class-0x10:' ',
                   sig->flags.exportable?' ':'L',
                   sig->flags.revocable?' ':'R',
                   sig->flags.policy_url?'P':' ',
                   sig->flags.notation?'N':' ',
                   sig->flags.expired?'X':' ',
		   (sig->trust_depth>9)?'T':
		   (sig->trust_depth>0)?'0'+sig->trust_depth:' ',
		   keystr(sig->keyid),datestr_from_sig(sig));
	    if(opt.list_options&LIST_SHOW_SIG_EXPIRE)
	      printf(" %s", expirestr_from_sig(sig));
	    printf("  ");
	    if( sigrc == '%' )
		printf("[%s] ", g10_errstr(rc) );
	    else if( sigrc == '?' )
		;
	    else if ( !opt.fast_list_mode ) {
		size_t n;
		char *p = get_user_id( sig->keyid, &n );
                print_utf8_string( stdout, p, n );
		xfree(p);
	    }
	    putchar('\n');

	    if(sig->flags.policy_url
	       && (opt.list_options&LIST_SHOW_POLICY_URLS))
	      show_policy_url(sig,3,0);

	    if(sig->flags.notation && (opt.list_options&LIST_SHOW_NOTATIONS))
	      show_notation(sig,3,0,
			    ((opt.list_options&LIST_SHOW_STD_NOTATIONS)?1:0)+
			    ((opt.list_options&LIST_SHOW_USER_NOTATIONS)?2:0));

	    if(sig->flags.pref_ks
	       && (opt.list_options&LIST_SHOW_KEYSERVER_URLS))
	      show_keyserver_url(sig,3,0);

	    /* fixme: check or list other sigs here */
	}
    }
    putchar('\n');
}

void
print_revokers(PKT_public_key *pk)
{
  /* print the revoker record */
  if( !pk->revkey && pk->numrevkeys )
    BUG();
  else
    {
      int i,j;

      for (i=0; i < pk->numrevkeys; i++)
	{
	  byte *p;

	  printf ("rvk:::%d::::::", pk->revkey[i].algid);
	  p = pk->revkey[i].fpr;
	  for (j=0; j < 20; j++, p++ )
	    printf ("%02X", *p);
	  printf (":%02x%s:\n", pk->revkey[i].class,
		  (pk->revkey[i].class&0x40)?"s":"");
	}
    }
}

static void
list_keyblock_colon( KBNODE keyblock, int secret, int fpr )
{
    int rc = 0;
    KBNODE kbctx;
    KBNODE node;
    PKT_public_key *pk;
    PKT_secret_key *sk;
    u32 keyid[2];
    int any=0;
    int trustletter = 0;
    int ulti_hack = 0;
    int i;

    /* get the keyid from the keyblock */
    node = find_kbnode( keyblock, secret? PKT_SECRET_KEY : PKT_PUBLIC_KEY );
    if( !node ) {
	log_error("Oops; key lost!\n");
	dump_kbnode( keyblock );
	return;
    }

    if( secret ) {
	pk = NULL;
	sk = node->pkt->pkt.secret_key;
	keyid_from_sk( sk, keyid );
        printf("sec::%u:%d:%08lX%08lX:%s:%s:::",
		    nbits_from_sk( sk ),
		    sk->pubkey_algo,
		    (ulong)keyid[0],(ulong)keyid[1],
		    colon_datestr_from_sk( sk ),
		    colon_strtime (sk->expiredate)
		    /* fixme: add LID here */ );
    }
    else {
	pk = node->pkt->pkt.public_key;
	sk = NULL;
	keyid_from_pk( pk, keyid );
        fputs( "pub:", stdout );
        if ( !pk->is_valid )
            putchar ('i');
        else if ( pk->is_revoked )
            putchar ('r');
        else if ( pk->has_expired )
            putchar ('e');
        else if ( opt.fast_list_mode || opt.no_expensive_trust_checks ) 
            ;
        else {
            trustletter = get_validity_info ( pk, NULL );
            if( trustletter == 'u' )
                ulti_hack = 1;
            putchar(trustletter);
        }
        printf(":%u:%d:%08lX%08lX:%s:%s::",
		    nbits_from_pk( pk ),
		    pk->pubkey_algo,
		    (ulong)keyid[0],(ulong)keyid[1],
		    colon_datestr_from_pk( pk ),
		    colon_strtime (pk->expiredate) );
        if( !opt.fast_list_mode && !opt.no_expensive_trust_checks  )
            putchar( get_ownertrust_info(pk) );
	    putchar(':');
    }

    if (opt.fixed_list_mode) {
        /* do not merge the first uid with the primary key */
        putchar(':');
        putchar(':');
        print_capabilities (pk, sk, keyblock);
        if (secret) {
          putchar(':'); /* End of field 13. */
          putchar(':'); /* End of field 14. */
          if (sk->protect.s2k.mode == 1001)
            putchar('#'); /* Key is just a stub. */
          else if (sk->protect.s2k.mode == 1002) {
            /* Key is stored on an external token (card) or handled by
               the gpg-agent.  Print the serial number of that token
               here. */
            for (i=0; i < sk->protect.ivlen; i++)
              printf ("%02X", sk->protect.iv[i]);
          }
          putchar(':'); /* End of field 15. */
        }
        putchar('\n');
	if(pk)
	  print_revokers(pk);
        if( fpr )
            print_fingerprint( pk, sk, 0 );
        if( opt.with_key_data )
            print_key_data( pk );
        any = 1;
    }

    for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
	if( node->pkt->pkttype == PKT_USER_ID && !opt.fast_list_mode ) {
	    PKT_user_id *uid=node->pkt->pkt.user_id;
	    if(attrib_fp && node->pkt->pkt.user_id->attrib_data!=NULL)
	      dump_attribs(node->pkt->pkt.user_id,pk,sk);
            /*
             * Fixme: We need a is_valid flag here too 
             */
	    if( any ) {
	        char *str=uid->attrib_data?"uat":"uid";
		/* If we're listing a secret key, leave out the
		   validity values for now.  This is handled better in
		   1.9. */
		if ( sk )
        	    printf("%s:::::",str);
                else if ( uid->is_revoked )
        	    printf("%s:r::::",str);
                else if ( uid->is_expired )
        	    printf("%s:e::::",str);
		else if ( opt.no_expensive_trust_checks )
        	    printf("%s:::::",str);
                else {
		    int uid_validity;

		    if( pk && !ulti_hack )
		      uid_validity=get_validity_info (pk, uid);
		    else
			uid_validity = 'u';
		    printf("%s:%c::::",str,uid_validity);
                }

		printf("%s:",colon_strtime(uid->created));
		printf("%s:",colon_strtime(uid->expiredate));

		namehash_from_uid(uid);

		for(i=0; i < 20; i++ )
		  printf("%02X",uid->namehash[i]);

		printf("::");
	    }
	    if(uid->attrib_data)
	      printf("%u %lu",uid->numattribs,uid->attrib_len);
            else
	      print_string(stdout,uid->name,uid->len, ':' );
            putchar(':');
	    if (any)
                putchar('\n');
            else {
                putchar(':');
                print_capabilities (pk, sk, keyblock);
                putchar('\n');
		if( fpr )
		    print_fingerprint( pk, sk, 0 );
		if( opt.with_key_data )
		    print_key_data( pk );
		any = 1;
	    }
	}
	else if( node->pkt->pkttype == PKT_PUBLIC_SUBKEY ) {
	    u32 keyid2[2];
	    PKT_public_key *pk2 = node->pkt->pkt.public_key;

	    if( !any ) {
                putchar(':');
                putchar(':');
                print_capabilities (pk, sk, keyblock);
                putchar('\n');
		if( fpr )
		    print_fingerprint( pk, sk, 0 ); /* of the main key */
		any = 1;
	    }

	    keyid_from_pk( pk2, keyid2 );
            fputs ("sub:", stdout );
            if ( !pk2->is_valid )
                putchar ('i');
            else if ( pk2->is_revoked )
                putchar ('r');
            else if ( pk2->has_expired )
                putchar ('e');
            else if ( opt.fast_list_mode || opt.no_expensive_trust_checks )
                ;
            else {
	        /* trustletter should always be defined here */
	        if(trustletter)
		  printf("%c", trustletter );
            }
            printf(":%u:%d:%08lX%08lX:%s:%s:::::",
			nbits_from_pk( pk2 ),
			pk2->pubkey_algo,
			(ulong)keyid2[0],(ulong)keyid2[1],
			colon_datestr_from_pk( pk2 ),
			colon_strtime (pk2->expiredate)
			/* fixme: add LID and ownertrust here */
						);
            print_capabilities (pk2, NULL, NULL);
            putchar('\n');
	    if( fpr > 1 )
		print_fingerprint( pk2, NULL, 0 );
	    if( opt.with_key_data )
		print_key_data( pk2 );
	}
	else if( node->pkt->pkttype == PKT_SECRET_SUBKEY ) {
	    u32 keyid2[2];
	    PKT_secret_key *sk2 = node->pkt->pkt.secret_key;

	    if( !any ) {
                putchar(':');
                putchar(':');
                print_capabilities (pk, sk, keyblock);
		putchar('\n');
		if( fpr )
		    print_fingerprint( pk, sk, 0 ); /* of the main key */
		any = 1;
	    }

	    keyid_from_sk( sk2, keyid2 );
            printf("ssb::%u:%d:%08lX%08lX:%s:%s:::::",
			nbits_from_sk( sk2 ),
			sk2->pubkey_algo,
			(ulong)keyid2[0],(ulong)keyid2[1],
			colon_datestr_from_sk( sk2 ),
			colon_strtime (sk2->expiredate)
                   /* fixme: add LID */ );
            print_capabilities (NULL, sk2, NULL);
            if (opt.fixed_list_mode) {
              /* We print the serial number only in fixed list mode
                 for the primary key so, so avoid questions we print
                 it for subkeys also only in this mode.  There is no
                 technical reason, though. */
              putchar(':'); /* End of field 13. */
              putchar(':'); /* End of field 14. */
              if (sk2->protect.s2k.mode == 1001)
                putchar('#'); /* Key is just a stub. */
              else if (sk2->protect.s2k.mode == 1002) {
                /* Key is stored on an external token (card) or handled by
                   the gpg-agent.  Print the serial number of that token
                   here. */
                for (i=0; i < sk2->protect.ivlen; i++)
                  printf ("%02X", sk2->protect.iv[i]);
              }
              putchar(':'); /* End of field 15. */
            }
            putchar ('\n');
	    if( fpr > 1 )
              print_fingerprint( NULL, sk2, 0 );
	}
	else if( opt.list_sigs && node->pkt->pkttype == PKT_SIGNATURE ) {
	    PKT_signature *sig = node->pkt->pkt.signature;
	    int sigrc,fprokay=0;
            char *sigstr;
	    size_t fplen;
	    byte fparray[MAX_FINGERPRINT_LEN];

	    if( !any ) { /* no user id, (maybe a revocation follows)*/
		if( sig->sig_class == 0x20 )
		    fputs("[revoked]:", stdout);
		else if( sig->sig_class == 0x18 )
		    fputs("[key binding]:", stdout);
		else if( sig->sig_class == 0x28 )
		    fputs("[subkey revoked]:", stdout);
                else
                    putchar (':');
                putchar(':');
                print_capabilities (pk, sk, keyblock);
                putchar('\n');
		if( fpr )
		    print_fingerprint( pk, sk, 0 );
		any=1;
	    }

	    if( sig->sig_class == 0x20 || sig->sig_class == 0x28
				       || sig->sig_class == 0x30 )
	       sigstr = "rev";
	    else if( (sig->sig_class&~3) == 0x10 )
	       sigstr = "sig";
	    else if( sig->sig_class == 0x18 )
	       sigstr = "sig";
	    else if( sig->sig_class == 0x1F )
	       sigstr = "sig";
	    else {
                printf ("sig::::::::::%02x%c:\n",
                        sig->sig_class, sig->flags.exportable?'x':'l');
		continue;
	    }
	    if( opt.check_sigs ) {
	        PKT_public_key *signer_pk=NULL;

		fflush(stdout);
		if(opt.no_sig_cache)
		  signer_pk=xmalloc_clear(sizeof(PKT_public_key));

		rc = check_key_signature2( keyblock, node, NULL, signer_pk,
					   NULL, NULL, NULL );
		switch( rc ) {
		  case 0:		   sigrc = '!'; break;
		  case G10ERR_BAD_SIGN:    sigrc = '-'; break;
		  case G10ERR_NO_PUBKEY: 
		  case G10ERR_UNU_PUBKEY:  sigrc = '?'; break;
		  default:		   sigrc = '%'; break;
		}

		if(opt.no_sig_cache)
		  {
		    if(rc==0)
		      {
			fingerprint_from_pk (signer_pk, fparray, &fplen);
			fprokay=1;
		      }
		    free_public_key(signer_pk);
		  }
	    }
	    else {
		rc = 0;
		sigrc = ' ';
	    }
            fputs( sigstr, stdout );
            putchar(':');
            if( sigrc != ' ' )
                putchar(sigrc);
            printf("::%d:%08lX%08lX:%s:%s:", sig->pubkey_algo,
		   (ulong)sig->keyid[0], (ulong)sig->keyid[1],
		   colon_datestr_from_sig(sig),
		   colon_expirestr_from_sig(sig));

	    if(sig->trust_depth || sig->trust_value)
	      printf("%d %d",sig->trust_depth,sig->trust_value);
	    printf(":");

	    if(sig->trust_regexp)
	      print_string(stdout,sig->trust_regexp,
			   strlen(sig->trust_regexp),':');
	    printf(":");

	    if( sigrc == '%' )
		printf("[%s] ", g10_errstr(rc) );
	    else if( sigrc == '?' )
		;
	    else if ( !opt.fast_list_mode ) {
		size_t n;
		char *p = get_user_id( sig->keyid, &n );
                print_string( stdout, p, n, ':' );
		xfree(p);
	    }
            printf(":%02x%c:", sig->sig_class,sig->flags.exportable?'x':'l');

	    if(opt.no_sig_cache && opt.check_sigs && fprokay)
	      {
		printf(":");

		for (i=0; i < fplen ; i++ )
		  printf ("%02X", fparray[i] );

		printf(":");
	      }

	    printf("\n");

	    if(opt.show_subpackets)
	      print_subpackets_colon(sig);

	    /* fixme: check or list other sigs here */
	}
    }
    if( !any ) {/* oops, no user id */
        putchar(':');
        putchar(':');
        print_capabilities (pk, sk, keyblock);
	putchar('\n');
    }
}

/*
 * Reorder the keyblock so that the primary user ID (and not attribute
 * packet) comes first.  Fixme: Replace this by a generic sort
 * function.  */
static void
do_reorder_keyblock (KBNODE keyblock,int attr)
{
    KBNODE primary = NULL, primary0 = NULL, primary2 = NULL;
    KBNODE last, node;

    for (node=keyblock; node; primary0=node, node = node->next) {
	if( node->pkt->pkttype == PKT_USER_ID &&
	    ((attr && node->pkt->pkt.user_id->attrib_data) ||
	     (!attr && !node->pkt->pkt.user_id->attrib_data)) &&
            node->pkt->pkt.user_id->is_primary ) {
            primary = primary2 = node;
            for (node=node->next; node; primary2=node, node = node->next ) {
                if( node->pkt->pkttype == PKT_USER_ID 
                    || node->pkt->pkttype == PKT_PUBLIC_SUBKEY 
                    || node->pkt->pkttype == PKT_SECRET_SUBKEY ) {
                    break;
                }
            }
            break;
        }
    }
    if ( !primary )
        return;  /* no primary key flag found (should not happen) */

    for (last=NULL, node=keyblock; node; last = node, node = node->next) {
	if( node->pkt->pkttype == PKT_USER_ID )
            break;
    }
    assert (node);
    assert (last); /* the user ID is never the first packet */
    assert (primary0);  /* ditto (this is the node before primary) */
    if ( node == primary )
        return; /* already the first one */

    last->next = primary;
    primary0->next = primary2->next;
    primary2->next = node;
}

void
reorder_keyblock (KBNODE keyblock)
{
  do_reorder_keyblock(keyblock,1);
  do_reorder_keyblock(keyblock,0);
}

void
list_keyblock( KBNODE keyblock, int secret, int fpr, void *opaque )
{
    reorder_keyblock (keyblock);
    if (opt.with_colons)
        list_keyblock_colon (keyblock, secret, fpr );
    else
        list_keyblock_print (keyblock, secret, fpr, opaque );
}

/*
 * standard function to print the finperprint.
 * mode 0: as used in key listings, opt.with_colons is honored
 *      1: print using log_info ()
 *      2: direct use of tty
 *      3: direct use of tty but only primary key.
 * modes 1 and 2 will try and print both subkey and primary key fingerprints
 */
void
print_fingerprint (PKT_public_key *pk, PKT_secret_key *sk, int mode )
{
    byte array[MAX_FINGERPRINT_LEN], *p;
    size_t i, n;
    FILE *fp;
    const char *text;
    int primary=0;

    if(sk)
      {
	if(sk->main_keyid[0]==sk->keyid[0] && sk->main_keyid[1]==sk->keyid[1])
	  primary=1;
      }
    else
      {
	if(pk->main_keyid[0]==pk->keyid[0] && pk->main_keyid[1]==pk->keyid[1])
	  primary=1;
      }

    /* Just to be safe */
    if(mode&0x80 && !primary)
      {
	log_error("primary key is not really primary!\n");
	return;
      }

    mode&=~0x80;

    if(!primary && (mode==1 || mode==2))
      {
	if(sk)
	  {
	    PKT_secret_key *primary_sk=xmalloc_clear(sizeof(*primary_sk));
	    get_seckey(primary_sk,sk->main_keyid);
	    print_fingerprint(NULL,primary_sk,mode|0x80);
	    free_secret_key(primary_sk);
	  }
	else
	  {
	    PKT_public_key *primary_pk=xmalloc_clear(sizeof(*primary_pk));
	    get_pubkey(primary_pk,pk->main_keyid);
	    print_fingerprint(primary_pk,NULL,mode|0x80);
	    free_public_key(primary_pk);
	  }
      }

    if (mode == 1) {
        fp = log_stream ();
	if(primary)
	  text = _("Primary key fingerprint:");
	else
	  text = _("     Subkey fingerprint:");
    }
    else if (mode == 2) {
        fp = NULL; /* use tty */
	if(primary)
          /* TRANSLATORS: this should fit into 24 bytes to that the
           * fingerprint data is properly aligned with the user ID */
	  text = _(" Primary key fingerprint:");
	else
	  text = _("      Subkey fingerprint:");
    }
    else if (mode == 3) {
        fp = NULL; /* use tty */
	text = _("      Key fingerprint =");
    }
    else {
        fp = stdout;
	text = _("      Key fingerprint =");
    }
  
    if (sk)
	fingerprint_from_sk (sk, array, &n);
    else
	fingerprint_from_pk (pk, array, &n);
    p = array;
    if (opt.with_colons && !mode) {
	fprintf (fp, "fpr:::::::::");
	for (i=0; i < n ; i++, p++ )
	    fprintf (fp, "%02X", *p );
	putc(':', fp);
    }
    else {
        if (fp)
            fputs (text, fp);
        else
            tty_printf ("%s", text);
	if (n == 20) {
	    for (i=0; i < n ; i++, i++, p += 2 ) {
                if (fp) {
                    if (i == 10 )
                        putc(' ', fp);
                    fprintf (fp, " %02X%02X", *p, p[1] );
                }
                else {
                    if (i == 10 )
                        tty_printf (" ");
                    tty_printf (" %02X%02X", *p, p[1]);
                }
	    }
	}
	else {
	    for (i=0; i < n ; i++, p++ ) {
                if (fp) {
                    if (i && !(i%8) )
                        putc (' ', fp);
                    fprintf (fp, " %02X", *p );
                }
                else {
                    if (i && !(i%8) )
                        tty_printf (" ");
                    tty_printf (" %02X", *p );
                }
	    }
	}
    }
    if (fp)
        putc ('\n', fp);
    else
        tty_printf ("\n");
}

/* Print the serial number of an OpenPGP card if available. */
static void
print_card_serialno (PKT_secret_key *sk)
{
  int i;

  if (!sk)
    return;
  if (!sk->is_protected || sk->protect.s2k.mode != 1002) 
    return; /* Not a card. */
  if (opt.with_colons)
    return; /* Handled elsewhere. */

  fputs (_("      Card serial no. ="), stdout);
  putchar (' ');
  if (sk->protect.ivlen == 16
      && !memcmp (sk->protect.iv, "\xD2\x76\x00\x01\x24\x01", 6) )
    { /* This is an OpenPGP card. Just print the relevant part. */
      for (i=8; i < 14; i++)
        {
          if (i == 10)
            putchar (' ');
          printf ("%02X", sk->protect.iv[i]);
        }
    }
  else
    { /* Something is wrong: Print all. */
      for (i=0; i < sk->protect.ivlen; i++)
        printf ("%02X", sk->protect.iv[i]);
    }
  putchar ('\n');
}



void set_attrib_fd(int fd)
{
  static int last_fd=-1;

  if ( fd != -1 && last_fd == fd )
    return;

  if ( attrib_fp && attrib_fp != stdout && attrib_fp != stderr )
    fclose (attrib_fp);
  attrib_fp = NULL;
  if ( fd == -1 ) 
    return;

  if( fd == 1 )
    attrib_fp = stdout;
  else if( fd == 2 )
    attrib_fp = stderr;
  else
    attrib_fp = fdopen( fd, "wb" );
  if( !attrib_fp ) {
    log_fatal("can't open fd %d for attribute output: %s\n",
	      fd, strerror(errno));
  }

  last_fd = fd;
}