Git initHEAD2.0_alphamaster2.0alpha1.0_post

1 files changed, 753 insertions, 0 deletions

diff --git a/g10/keyid.c b/g10/keyid.c
new file mode 100644
index 0000000..86a204f
--- /dev/null
+++ b/g10/keyid.c
@@ -0,0 +1,753 @@
+/* keyid.c - key ID and fingerprint handling
+ * Copyright (C) 1998, 1999, 2000, 2001, 2003,
+ *               2004 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <assert.h>
+#include "util.h"
+#include "main.h"
+#include "packet.h"
+#include "options.h"
+#include "mpi.h"
+#include "keydb.h"
+#include "i18n.h"
+
+int
+pubkey_letter( int algo )
+{
+    switch( algo ) {
+      case PUBKEY_ALGO_RSA:	return 'R' ;
+      case PUBKEY_ALGO_RSA_E:	return 'r' ;
+      case PUBKEY_ALGO_RSA_S:	return 's' ;
+      case PUBKEY_ALGO_ELGAMAL_E: return 'g';
+      case PUBKEY_ALGO_ELGAMAL: return 'G' ;
+      case PUBKEY_ALGO_DSA:	return 'D' ;
+      default: return '?';
+    }
+}
+
+/* This function is useful for v4 fingerprints and v3 or v4 key
+   signing. */
+void
+hash_public_key( MD_HANDLE md, PKT_public_key *pk )
+{
+  unsigned n=6;
+  unsigned nb[PUBKEY_MAX_NPKEY];
+  unsigned nn[PUBKEY_MAX_NPKEY];
+  byte *pp[PUBKEY_MAX_NPKEY];
+  int i;
+  int npkey = pubkey_get_npkey( pk->pubkey_algo );
+
+  /* Two extra bytes for the expiration date in v3 */
+  if(pk->version<4)
+    n+=2;
+
+  if(npkey==0 && pk->pkey[0] && mpi_is_opaque(pk->pkey[0]))
+    {
+      pp[0]=mpi_get_opaque(pk->pkey[0],&nn[0]);
+      n+=nn[0];
+    }
+  else
+    for(i=0; i < npkey; i++ )
+      {
+	nb[i] = mpi_get_nbits(pk->pkey[i]);
+	pp[i] = mpi_get_buffer( pk->pkey[i], nn+i, NULL );
+	n += 2 + nn[i];
+      }
+
+  md_putc( md, 0x99 );     /* ctb */
+  /* What does it mean if n is greater than than 0xFFFF ? */
+  md_putc( md, n >> 8 );   /* 2 byte length header */
+  md_putc( md, n );
+  md_putc( md, pk->version );
+
+  md_putc( md, pk->timestamp >> 24 );
+  md_putc( md, pk->timestamp >> 16 );
+  md_putc( md, pk->timestamp >>  8 );
+  md_putc( md, pk->timestamp       );
+
+  if(pk->version<4)
+    {
+      u16 days=0;
+      if(pk->expiredate)
+	days=(u16)((pk->expiredate - pk->timestamp) / 86400L);
+ 
+      md_putc( md, days >> 8 );
+      md_putc( md, days );
+    }
+
+  md_putc( md, pk->pubkey_algo );
+
+  if(npkey==0 && pk->pkey[0] && mpi_is_opaque(pk->pkey[0]))
+    md_write(md,pp[0],nn[0]);
+  else
+    for(i=0; i < npkey; i++ )
+      {
+	md_putc( md, nb[i]>>8);
+	md_putc( md, nb[i] );
+	md_write( md, pp[i], nn[i] );
+	xfree(pp[i]);
+      }
+}
+
+static MD_HANDLE
+do_fingerprint_md( PKT_public_key *pk )
+{
+  MD_HANDLE md;
+
+  md = md_open( DIGEST_ALGO_SHA1, 0);
+  hash_public_key(md,pk);
+  md_final( md );
+
+  return md;
+}
+
+static MD_HANDLE
+do_fingerprint_md_sk( PKT_secret_key *sk )
+{
+    PKT_public_key pk;
+    int npkey = pubkey_get_npkey( sk->pubkey_algo ); /* npkey is correct! */
+    int i;
+
+    if(npkey==0)
+      return NULL;
+
+    pk.pubkey_algo = sk->pubkey_algo;
+    pk.version	   = sk->version;
+    pk.timestamp = sk->timestamp;
+    pk.expiredate = sk->expiredate;
+    pk.pubkey_algo = sk->pubkey_algo;
+    for( i=0; i < npkey; i++ )
+      pk.pkey[i] = sk->skey[i];
+    return do_fingerprint_md( &pk );
+}
+
+size_t
+keystrlen(void)
+{
+  switch(opt.keyid_format)
+    {
+    case KF_SHORT:
+      return 8;
+
+    case KF_LONG:
+      return 16;
+
+    case KF_0xSHORT:
+      return 10;
+
+    case KF_0xLONG:
+      return 18;
+
+    default:
+      BUG();
+    }
+}
+
+const char *
+keystr(u32 *keyid)
+{  
+  static char keyid_str[19];
+
+  switch(opt.keyid_format)
+    {
+    case KF_SHORT:
+      sprintf(keyid_str,"%08lX",(ulong)keyid[1]);
+      break;
+
+    case KF_LONG:
+      if(keyid[0])
+	sprintf(keyid_str,"%08lX%08lX",(ulong)keyid[0],(ulong)keyid[1]);
+      else
+	sprintf(keyid_str,"%08lX",(ulong)keyid[1]);
+      break;
+
+    case KF_0xSHORT:
+      sprintf(keyid_str,"0x%08lX",(ulong)keyid[1]);
+      break;
+
+    case KF_0xLONG:
+      if(keyid[0])
+	sprintf(keyid_str,"0x%08lX%08lX",(ulong)keyid[0],(ulong)keyid[1]);
+      else
+	sprintf(keyid_str,"0x%08lX",(ulong)keyid[1]);
+      break;
+
+    default:
+      BUG();
+    }
+
+  return keyid_str;
+}
+
+const char *
+keystr_from_pk(PKT_public_key *pk)
+{
+  keyid_from_pk(pk,NULL);
+
+  return keystr(pk->keyid);
+}
+
+const char *
+keystr_from_sk(PKT_secret_key *sk)
+{
+  keyid_from_sk(sk,NULL);
+
+  return keystr(sk->keyid);
+}
+
+const char *
+keystr_from_desc(KEYDB_SEARCH_DESC *desc)
+{
+  switch(desc->mode)
+    {
+    case KEYDB_SEARCH_MODE_LONG_KID:
+    case KEYDB_SEARCH_MODE_SHORT_KID:
+      return keystr(desc->u.kid);
+
+    case KEYDB_SEARCH_MODE_FPR20:
+      {
+	u32 keyid[2];
+
+	keyid[0] = (unsigned char)desc->u.fpr[12] << 24
+	  | (unsigned char)desc->u.fpr[13] << 16
+	  | (unsigned char)desc->u.fpr[14] << 8
+	  | (unsigned char)desc->u.fpr[15] ;
+	keyid[1] = (unsigned char)desc->u.fpr[16] << 24
+	  | (unsigned char)desc->u.fpr[17] << 16
+	  | (unsigned char)desc->u.fpr[18] << 8
+	  | (unsigned char)desc->u.fpr[19] ;
+
+	return keystr(keyid);
+      }
+
+    case KEYDB_SEARCH_MODE_FPR16:
+      return "?v3 fpr?";
+
+    default:
+      BUG();
+    }
+}
+
+/****************
+ * Get the keyid from the secret key and put it into keyid
+ * if this is not NULL. Return the 32 low bits of the keyid.
+ */
+u32
+keyid_from_sk( PKT_secret_key *sk, u32 *keyid )
+{
+  u32 lowbits;
+  u32 dummy_keyid[2];
+
+  if( !keyid )
+    keyid = dummy_keyid;
+
+  if( sk->keyid[0] || sk->keyid[1] )
+    {
+      keyid[0] = sk->keyid[0];
+      keyid[1] = sk->keyid[1];
+      lowbits = keyid[1];
+    }
+  else if( sk->version < 4 )
+    {
+      if( is_RSA(sk->pubkey_algo) )
+	{
+	  lowbits = pubkey_get_npkey(sk->pubkey_algo) ?
+	    mpi_get_keyid( sk->skey[0], keyid ) : 0; /* take n */
+	  sk->keyid[0]=keyid[0];
+	  sk->keyid[1]=keyid[1];
+	}
+      else
+	sk->keyid[0]=sk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
+    }
+  else
+    {
+      const byte *dp;
+      MD_HANDLE md;
+      md = do_fingerprint_md_sk(sk);
+      if(md)
+	{
+	  dp = md_read( md, 0 );
+	  keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
+	  keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
+	  lowbits = keyid[1];
+	  md_close(md);
+	  sk->keyid[0] = keyid[0];
+	  sk->keyid[1] = keyid[1];
+	}
+      else
+	sk->keyid[0]=sk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
+    }
+
+  return lowbits;
+}
+
+
+/****************
+ * Get the keyid from the public key and put it into keyid
+ * if this is not NULL. Return the 32 low bits of the keyid.
+ */
+u32
+keyid_from_pk( PKT_public_key *pk, u32 *keyid )
+{
+  u32 lowbits;
+  u32 dummy_keyid[2];
+
+  if( !keyid )
+    keyid = dummy_keyid;
+
+  if( pk->keyid[0] || pk->keyid[1] )
+    {
+      keyid[0] = pk->keyid[0];
+      keyid[1] = pk->keyid[1];
+      lowbits = keyid[1];
+    }
+  else if( pk->version < 4 )
+    {
+      if( is_RSA(pk->pubkey_algo) )
+	{
+	  lowbits = pubkey_get_npkey(pk->pubkey_algo) ?
+	    mpi_get_keyid( pk->pkey[0], keyid ) : 0 ; /* from n */
+	  pk->keyid[0] = keyid[0];
+	  pk->keyid[1] = keyid[1];
+	}
+      else
+	pk->keyid[0]=pk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
+    }
+  else
+    {
+      const byte *dp;
+      MD_HANDLE md;
+      md = do_fingerprint_md(pk);
+      if(md)
+	{
+	  dp = md_read( md, 0 );
+	  keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
+	  keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
+	  lowbits = keyid[1];
+	  md_close(md);
+	  pk->keyid[0] = keyid[0];
+	  pk->keyid[1] = keyid[1];
+	}
+      else
+	pk->keyid[0]=pk->keyid[1]=keyid[0]=keyid[1]=lowbits=0xFFFFFFFF;
+    }
+
+  return lowbits;
+}
+
+
+/****************
+ * Get the keyid from the fingerprint.	This function is simple for most
+ * keys, but has to do a keylookup for old stayle keys.
+ */
+u32
+keyid_from_fingerprint( const byte *fprint, size_t fprint_len, u32 *keyid )
+{
+    u32 dummy_keyid[2];
+
+    if( !keyid )
+	keyid = dummy_keyid;
+
+    if( fprint_len != 20 ) {
+	/* This is special as we have to lookup the key first */
+	PKT_public_key pk;
+	int rc;
+
+	memset( &pk, 0, sizeof pk );
+	rc = get_pubkey_byfprint( &pk, fprint, fprint_len );
+	if( rc ) {
+	    log_error("Oops: keyid_from_fingerprint: no pubkey\n");
+	    keyid[0] = 0;
+	    keyid[1] = 0;
+	}
+	else
+	    keyid_from_pk( &pk, keyid );
+    }
+    else {
+	const byte *dp = fprint;
+	keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
+	keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
+    }
+
+    return keyid[1];
+}
+
+
+u32
+keyid_from_sig( PKT_signature *sig, u32 *keyid )
+{
+    if( keyid ) {
+	keyid[0] = sig->keyid[0];
+	keyid[1] = sig->keyid[1];
+    }
+    return sig->keyid[1];
+}
+
+byte *
+namehash_from_uid(PKT_user_id *uid)
+{
+  if(uid->namehash==NULL)
+    {
+      uid->namehash=xmalloc(20);
+
+      if(uid->attrib_data)
+	rmd160_hash_buffer(uid->namehash,uid->attrib_data,uid->attrib_len);
+      else
+	rmd160_hash_buffer(uid->namehash,uid->name,uid->len);
+    }
+
+  return uid->namehash;
+}
+
+/****************
+ * return the number of bits used in the pk
+ */
+unsigned
+nbits_from_pk( PKT_public_key *pk )
+{
+    return pubkey_nbits( pk->pubkey_algo, pk->pkey );
+}
+
+/****************
+ * return the number of bits used in the sk
+ */
+unsigned
+nbits_from_sk( PKT_secret_key *sk )
+{
+    return pubkey_nbits( sk->pubkey_algo, sk->skey );
+}
+
+static const char *
+mk_datestr (char *buffer, time_t atime)
+{
+    struct tm *tp;
+
+    if ( atime < 0 ) /* 32 bit time_t and after 2038-01-19 */
+        strcpy (buffer, "????" "-??" "-??"); /* mark this as invalid */
+    else {
+        tp = gmtime (&atime);
+        sprintf (buffer,"%04d-%02d-%02d",
+                 1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday );
+    }
+    return buffer;
+}
+
+/****************
+ * return a string with the creation date of the pk
+ * Note: this is alloced in a static buffer.
+ *    Format is: yyyy-mm-dd
+ */
+const char *
+datestr_from_pk( PKT_public_key *pk )
+{
+    static char buffer[11+5];
+    time_t atime = pk->timestamp;
+
+    return mk_datestr (buffer, atime);
+}
+
+const char *
+datestr_from_sk( PKT_secret_key *sk )
+{
+    static char buffer[11+5];
+    time_t atime = sk->timestamp;
+
+    return mk_datestr (buffer, atime);
+}
+
+const char *
+datestr_from_sig( PKT_signature *sig )
+{
+    static char buffer[11+5];
+    time_t atime = sig->timestamp;
+
+    return mk_datestr (buffer, atime);
+}
+
+const char *
+expirestr_from_pk( PKT_public_key *pk )
+{
+    static char buffer[11+5];
+    time_t atime;
+
+    if( !pk->expiredate )
+	return _("never     ");
+    atime = pk->expiredate;
+    return mk_datestr (buffer, atime);
+}
+
+const char *
+expirestr_from_sk( PKT_secret_key *sk )
+{
+    static char buffer[11+5];
+    time_t atime;
+
+    if( !sk->expiredate )
+	return _("never     ");
+    atime = sk->expiredate;
+    return mk_datestr (buffer, atime);
+}
+
+const char *
+expirestr_from_sig( PKT_signature *sig )
+{
+    static char buffer[11+5];
+    time_t atime;
+
+    if(!sig->expiredate)
+      return _("never     ");
+    atime=sig->expiredate;
+    return mk_datestr (buffer, atime);
+}
+
+const char *
+revokestr_from_pk( PKT_public_key *pk )
+{
+    static char buffer[11+5];
+    time_t atime;
+
+    if(!pk->revoked.date)
+      return _("never     ");
+    atime=pk->revoked.date;
+    return mk_datestr (buffer, atime);
+}
+
+
+const char *
+usagestr_from_pk( PKT_public_key *pk )
+{
+  static char buffer[10];
+  int i = 0;
+  unsigned int use = pk->pubkey_usage;
+
+  if ( use & PUBKEY_USAGE_SIG )
+    buffer[i++] = 'S';
+
+  if ( use & PUBKEY_USAGE_CERT )
+    buffer[i++] = 'C';
+
+  if ( use & PUBKEY_USAGE_ENC )
+    buffer[i++] = 'E';
+
+  if ( (use & PUBKEY_USAGE_AUTH) )
+    buffer[i++] = 'A';
+
+  while (i < 4)
+    buffer[i++] = ' ';
+
+  buffer[i] = 0;
+  return buffer;
+}
+
+
+const char *
+colon_strtime (u32 t)
+{
+    if (!t)
+        return "";
+    if (opt.fixed_list_mode) {
+        static char buf[15];
+        sprintf (buf, "%lu", (ulong)t);
+        return buf;
+    }
+    return strtimestamp(t);
+}
+
+const char *
+colon_datestr_from_pk (PKT_public_key *pk)
+{
+    if (opt.fixed_list_mode) {
+        static char buf[15];
+        sprintf (buf, "%lu", (ulong)pk->timestamp);
+        return buf;
+    }
+    return datestr_from_pk (pk);
+}
+
+const char *
+colon_datestr_from_sk (PKT_secret_key *sk)
+{
+    if (opt.fixed_list_mode) {
+        static char buf[15];
+        sprintf (buf, "%lu", (ulong)sk->timestamp);
+        return buf;
+    }
+    return datestr_from_sk (sk);
+}
+
+const char *
+colon_datestr_from_sig (PKT_signature *sig)
+{
+    if (opt.fixed_list_mode) {
+        static char buf[15];
+        sprintf (buf, "%lu", (ulong)sig->timestamp);
+        return buf;
+    }
+    return datestr_from_sig (sig);
+}
+
+const char *
+colon_expirestr_from_sig (PKT_signature *sig)
+{
+    if(!sig->expiredate)
+        return "";
+    if (opt.fixed_list_mode) {
+        static char buf[15];
+        sprintf (buf, "%lu", (ulong)sig->expiredate);
+        return buf;
+    }
+    return expirestr_from_sig (sig);
+}
+
+
+/**************** .
+ * Return a byte array with the fingerprint for the given PK/SK
+ * The length of the array is returned in ret_len. Caller must free
+ * the array or provide an array of length MAX_FINGERPRINT_LEN.
+ */
+
+byte *
+fingerprint_from_pk( PKT_public_key *pk, byte *array, size_t *ret_len )
+{
+    byte *p, *buf;
+    const byte *dp;
+    size_t len;
+    unsigned int n;
+
+    if( pk->version < 4 )
+      {
+	if( is_RSA(pk->pubkey_algo) )
+	  {
+	    /* RSA in version 3 packets is special */
+	    MD_HANDLE md;
+
+	    md = md_open( DIGEST_ALGO_MD5, 0);
+	    if( pubkey_get_npkey( pk->pubkey_algo ) > 1 ) {
+	      p = buf = mpi_get_buffer( pk->pkey[0], &n, NULL );
+	      md_write( md, p, n );
+	      xfree(buf);
+	      p = buf = mpi_get_buffer( pk->pkey[1], &n, NULL );
+	      md_write( md, p, n );
+	      xfree(buf);
+	    }
+	    md_final(md);
+	    if( !array )
+	      array = xmalloc( 16 );
+	    len = 16;
+	    memcpy(array, md_read(md, DIGEST_ALGO_MD5), 16 );
+	    md_close(md);
+	  }
+	else
+	  {
+	    if(!array)
+	      array=xmalloc(16);
+	    len=16;
+	    memset(array,0,16);
+	  }
+      }
+    else {
+	MD_HANDLE md;
+	md = do_fingerprint_md(pk);
+	dp = md_read( md, 0 );
+	len = md_digest_length( md_get_algo( md ) );
+	assert( len <= MAX_FINGERPRINT_LEN );
+	if( !array )
+	    array = xmalloc( len );
+	memcpy(array, dp, len );
+	pk->keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
+	pk->keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
+	md_close(md);
+    }
+
+    *ret_len = len;
+    return array;
+}
+
+byte *
+fingerprint_from_sk( PKT_secret_key *sk, byte *array, size_t *ret_len )
+{
+    byte *p, *buf;
+    const char *dp;
+    size_t len;
+    unsigned n;
+
+    if( sk->version < 4 )
+      {
+	if( is_RSA(sk->pubkey_algo) )
+	  {
+	    /* RSA in version 3 packets is special */
+	    MD_HANDLE md;
+
+	    md = md_open( DIGEST_ALGO_MD5, 0);
+	    if( pubkey_get_npkey( sk->pubkey_algo ) > 1 ) {
+	      p = buf = mpi_get_buffer( sk->skey[0], &n, NULL );
+	      md_write( md, p, n );
+	      xfree(buf);
+	      p = buf = mpi_get_buffer( sk->skey[1], &n, NULL );
+	      md_write( md, p, n );
+	      xfree(buf);
+	    }
+	    md_final(md);
+	    if( !array )
+	      array = xmalloc( 16 );
+	    len = 16;
+	    memcpy(array, md_read(md, DIGEST_ALGO_MD5), 16 );
+	    md_close(md);
+	  }
+	else
+	  {
+	    if(!array)
+	      array=xmalloc(16);
+	    len=16;
+	    memset(array,0,16);
+	  }
+      }
+    else {
+	MD_HANDLE md;
+	md = do_fingerprint_md_sk(sk);
+	if(md)
+	  {
+	    dp = md_read( md, 0 );
+	    len = md_digest_length( md_get_algo( md ) );
+	    assert( len <= MAX_FINGERPRINT_LEN );
+	    if( !array )
+	      array = xmalloc( len );
+	    memcpy(array, dp, len );
+	    md_close(md);
+	  }
+	else
+	  {
+	    len=MAX_FINGERPRINT_LEN;
+	    if(!array)
+	      array=xmalloc(len);
+	    memset(array,0,len);
+	  }
+    }
+
+    *ret_len = len;
+    return array;
+}