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- Depth that the certificate verify callback receives is now numbered bottom-up (Peer cert depth is 0)

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This commit is contained in:
Paul Bakker 2012-11-14 12:11:38 +00:00
parent e0f41f3086
commit 34d8dbcc6d
3 changed files with 35 additions and 18 deletions
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4
ChangeLog
View file

@ -1,6 +1,10 @@
PolarSSL ChangeLog
= Version 1.2.1 released 2012-11-13
Changes
* Depth that the certificate verify callback receives is now numbered
bottom-up (Peer cert depth is 0)
Bugfixes
* Fixes for MSVC6
* Moved mpi_inv_mod() outside POLARSSL_GENPRIME

2
include/polarssl/x509.h
View file

@ -680,7 +680,7 @@ int x509parse_time_expired( const x509_time *time );
* (void *parameter, x509_cert *crt, int certificate_depth,
* int *flags). With the flags representing current flags for
* that specific certificate and the certificate depth from
* the top (Trust CA depth = 0).
* the bottom (Peer cert depth = 0).
*
* All flags left after returning from the callback
* are also returned to the application. The function should

47
library/x509parse.c
View file

@ -3114,12 +3114,12 @@ int x509_wildcard_verify( const char *cn, x509_buf *name )
static int x509parse_verify_top(
x509_cert *child, x509_cert *trust_ca,
x509_crl *ca_crl, int *path_cnt, int *flags,
x509_crl *ca_crl, int path_cnt, int *flags,
int (*f_vrfy)(void *, x509_cert *, int, int *),
void *p_vrfy )
{
int hash_id, ret;
int ca_flags = 0;
int ca_flags = 0, check_path_cnt = path_cnt + 1;
unsigned char hash[64];
if( x509parse_time_expired( &child->valid_to ) )
@ -3141,8 +3141,19 @@ static int x509parse_verify_top(
continue;
}
/*
* Reduce path_len to check against if top of the chain is
* the same as the trusted CA
*/
if( child->subject_raw.len == trust_ca->subject_raw.len &&
memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
child->issuer_raw.len ) == 0 )
{
check_path_cnt--;
}
if( trust_ca->max_pathlen > 0 &&
trust_ca->max_pathlen < *path_cnt )
trust_ca->max_pathlen < check_path_cnt )
{
trust_ca = trust_ca->next;
continue;
@ -3166,7 +3177,13 @@ static int x509parse_verify_top(
break;
}
if( trust_ca != NULL )
/*
* If top of chain is not the same as the trusted CA
*/
if( trust_ca != NULL &&
( child->subject_raw.len != trust_ca->subject_raw.len ||
memcmp( child->subject_raw.p, trust_ca->subject_raw.p,
child->issuer_raw.len ) != 0 ) )
{
/* Check trusted CA's CRL for then chain's top crt */
*flags |= x509parse_verifycrl( child, trust_ca, ca_crl );
@ -3186,7 +3203,7 @@ static int x509parse_verify_top(
if( NULL != f_vrfy )
{
if( ( ret = f_vrfy( p_vrfy, trust_ca, 0, &ca_flags ) ) != 0 )
if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1, &ca_flags ) ) != 0 )
return( ret );
}
}
@ -3194,12 +3211,10 @@ static int x509parse_verify_top(
/* Call callback on top cert */
if( NULL != f_vrfy )
{
if( ( ret = f_vrfy(p_vrfy, child, 1, flags ) ) != 0 )
if( ( ret = f_vrfy(p_vrfy, child, path_cnt, flags ) ) != 0 )
return( ret );
}
*path_cnt = 2;
*flags |= ca_flags;
return( 0 );
@ -3207,7 +3222,7 @@ static int x509parse_verify_top(
static int x509parse_verify_child(
x509_cert *child, x509_cert *parent, x509_cert *trust_ca,
x509_crl *ca_crl, int *path_cnt, int *flags,
x509_crl *ca_crl, int path_cnt, int *flags,
int (*f_vrfy)(void *, x509_cert *, int, int *),
void *p_vrfy )
{
@ -3246,28 +3261,26 @@ static int x509parse_verify_child(
break;
}
(*path_cnt)++;
if( grandparent != NULL )
{
/*
* Part of the chain
*/
ret = x509parse_verify_child( parent, grandparent, trust_ca, ca_crl, path_cnt, &parent_flags, f_vrfy, p_vrfy );
ret = x509parse_verify_child( parent, grandparent, trust_ca, ca_crl, path_cnt + 1, &parent_flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
}
else
{
ret = x509parse_verify_top( parent, trust_ca, ca_crl, path_cnt, &parent_flags, f_vrfy, p_vrfy );
ret = x509parse_verify_top( parent, trust_ca, ca_crl, path_cnt + 1, &parent_flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
}
/* child is verified to be a child of the parent, call verify callback */
if( NULL != f_vrfy )
if( ( ret = f_vrfy( p_vrfy, child, *path_cnt, flags ) ) != 0 )
if( ( ret = f_vrfy( p_vrfy, child, path_cnt, flags ) ) != 0 )
return( ret );
(*path_cnt)++;
*flags |= parent_flags;
@ -3286,7 +3299,7 @@ int x509parse_verify( x509_cert *crt,
{
size_t cn_len;
int ret;
int pathlen = 1;
int pathlen = 0;
x509_cert *parent;
x509_name *name;
x509_sequence *cur = NULL;
@ -3368,13 +3381,13 @@ int x509parse_verify( x509_cert *crt,
/*
* Part of the chain
*/
ret = x509parse_verify_child( crt, parent, trust_ca, ca_crl, &pathlen, flags, f_vrfy, p_vrfy );
ret = x509parse_verify_child( crt, parent, trust_ca, ca_crl, pathlen, flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
}
else
{
ret = x509parse_verify_top( crt, trust_ca, ca_crl, &pathlen, flags, f_vrfy, p_vrfy );
ret = x509parse_verify_top( crt, trust_ca, ca_crl, pathlen, flags, f_vrfy, p_vrfy );
if( ret != 0 )
return( ret );
}