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* import.c (collapse_uids): Significant speedup for de-duping user

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IDs.
This commit is contained in:
David Shaw 2007-09-02 14:09:24 +00:00
parent d1a13319bb
commit 8bc8b9d932
2 changed files with 87 additions and 70 deletions
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5
g10/ChangeLog
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@ -1,3 +1,8 @@
2007-09-02 David Shaw <dshaw@jabberwocky.com>
* import.c (collapse_uids): Significant speedup for de-duping user
IDs.
2007-08-24 Werner Koch <wk@g10code.com>
* keyring.c (keyring_register_filename): Use same_file_p.

152
g10/import.c
View File

@ -1644,90 +1644,102 @@ delete_inv_parts( const char *fname, KBNODE keyblock,
* It may happen that the imported keyblock has duplicated user IDs.
* We check this here and collapse those user IDs together with their
* sigs into one.
* Returns: True if the keyblock hash changed.
* Returns: True if the keyblock has changed.
*/
int
collapse_uids( KBNODE *keyblock )
{
KBNODE n, n2;
int in_uid;
int any=0;
KBNODE uid1;
int any=0;
restart:
for( n = *keyblock; n; n = n->next ) {
if( n->pkt->pkttype != PKT_USER_ID )
for(uid1=*keyblock;uid1;uid1=uid1->next)
{
KBNODE uid2;
if(uid1->pkt->pkttype!=PKT_USER_ID)
continue;
for(uid2=uid1->next;uid2;uid2=uid2->next)
{
if(uid2->pkt->pkttype!=PKT_USER_ID)
continue;
for( n2 = n->next; n2; n2 = n2->next ) {
if( n2->pkt->pkttype == PKT_USER_ID
&& !cmp_user_ids( n->pkt->pkt.user_id,
n2->pkt->pkt.user_id ) ) {
/* found a duplicate */
any = 1;
if( !n2->next
|| n2->next->pkt->pkttype == PKT_USER_ID
|| n2->next->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| n2->next->pkt->pkttype == PKT_SECRET_SUBKEY ) {
/* no more signatures: delete the user ID
* and start over */
remove_kbnode( keyblock, n2 );
if(cmp_user_ids(uid1->pkt->pkt.user_id,
uid2->pkt->pkt.user_id)==0)
{
/* We have a duplicated uid */
KBNODE sig1,last;
any=1;
/* Now take uid2's signatures, and attach them to
uid1 */
for(last=uid2;last->next;last=last->next)
{
if(last->next->pkt->pkttype==PKT_USER_ID
|| last->next->pkt->pkttype==PKT_PUBLIC_SUBKEY
|| last->next->pkt->pkttype==PKT_SECRET_SUBKEY)
break;
}
else {
/* The simple approach: Move one signature and
* then start over to delete the next one :-( */
move_kbnode( keyblock, n2->next, n->next );
/* Snip out uid2 */
(find_prev_kbnode(*keyblock,uid2,0))->next=last->next;
/* Now put uid2 in place as part of uid1 */
last->next=uid1->next;
uid1->next=uid2;
remove_kbnode(keyblock,uid2);
/* Now dedupe uid1 */
for(sig1=uid1->next;sig1;sig1=sig1->next)
{
KBNODE sig2;
if(sig1->pkt->pkttype==PKT_USER_ID
|| sig1->pkt->pkttype==PKT_PUBLIC_SUBKEY
|| sig1->pkt->pkttype==PKT_SECRET_SUBKEY)
break;
if(sig1->pkt->pkttype!=PKT_SIGNATURE)
continue;
for(sig2=sig1->next,last=sig1;sig2;last=sig2,sig2=sig2->next)
{
if(sig2->pkt->pkttype==PKT_USER_ID
|| sig2->pkt->pkttype==PKT_PUBLIC_SUBKEY
|| sig2->pkt->pkttype==PKT_SECRET_SUBKEY)
break;
if(sig2->pkt->pkttype!=PKT_SIGNATURE)
continue;
if(cmp_signatures(sig1->pkt->pkt.signature,
sig2->pkt->pkt.signature)==0)
{
/* We have a match, so delete the second
signature */
remove_kbnode(&uid1,sig2);
sig2=last;
}
}
}
goto restart;
}
}
}
if( !any )
return 0;
restart_sig:
/* now we may have duplicate signatures on one user ID: fix this */
for( in_uid = 0, n = *keyblock; n; n = n->next ) {
if( n->pkt->pkttype == PKT_USER_ID )
in_uid = 1;
else if( n->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| n->pkt->pkttype == PKT_SECRET_SUBKEY )
in_uid = 0;
else if( in_uid ) {
n2 = n;
do {
KBNODE ncmp = NULL;
for( ; n2; n2 = n2->next ) {
if( n2->pkt->pkttype == PKT_USER_ID
|| n2->pkt->pkttype == PKT_PUBLIC_SUBKEY
|| n2->pkt->pkttype == PKT_SECRET_SUBKEY )
break;
if( n2->pkt->pkttype != PKT_SIGNATURE )
;
else if( !ncmp )
ncmp = n2;
else if( !cmp_signatures( ncmp->pkt->pkt.signature,
n2->pkt->pkt.signature )) {
remove_kbnode( keyblock, n2 );
goto restart_sig;
}
}
n2 = ncmp? ncmp->next : NULL;
} while( n2 );
}
if(any && !opt.quiet)
{
const char *key="???";
if( (uid1=find_kbnode( *keyblock, PKT_PUBLIC_KEY )) )
key=keystr_from_pk(uid1->pkt->pkt.public_key);
else if( (uid1 = find_kbnode( *keyblock, PKT_SECRET_KEY )) )
key=keystr_from_sk(uid1->pkt->pkt.secret_key);
log_info(_("key %s: duplicated user ID detected - merged\n"),key);
}
if(!opt.quiet)
{
const char *key="???";
if( (n = find_kbnode( *keyblock, PKT_PUBLIC_KEY )) )
key=keystr_from_pk(n->pkt->pkt.public_key);
else if( (n = find_kbnode( *keyblock, PKT_SECRET_KEY )) )
key=keystr_from_sk(n->pkt->pkt.secret_key);
log_info(_("key %s: duplicated user ID detected - merged\n"),key);
}
return 1;
return any;
}
/* Check for a 0x20 revocation from a revocation key that is not