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crypt32: Only apply a name constraint if the name form is present.

This commit is contained in:
Juan Lang 2009-11-17 12:06:18 -08:00 committed by Alexandre Julliard
parent f6d3348b7c
commit a98dad4f93
1 changed files with 20 additions and 5 deletions
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25
dlls/crypt32/chain.c
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@ -743,12 +743,14 @@ static BOOL directory_name_matches(const CERT_NAME_BLOB *constraint,
}
static BOOL alt_name_matches(const CERT_ALT_NAME_ENTRY *name,
const CERT_ALT_NAME_ENTRY *constraint, DWORD *trustErrorStatus)
const CERT_ALT_NAME_ENTRY *constraint, DWORD *trustErrorStatus, BOOL *present)
{
BOOL match = FALSE;
if (name->dwAltNameChoice == constraint->dwAltNameChoice)
{
if (present)
*present = TRUE;
switch (constraint->dwAltNameChoice)
{
case CERT_ALT_NAME_RFC822_NAME:
@ -778,6 +780,8 @@ static BOOL alt_name_matches(const CERT_ALT_NAME_ENTRY *name,
CERT_TRUST_HAS_NOT_SUPPORTED_NAME_CONSTRAINT;
}
}
else if (present)
*present = FALSE;
return match;
}
@ -789,19 +793,21 @@ static BOOL alt_name_matches_excluded_name(const CERT_ALT_NAME_ENTRY *name,
for (i = 0; !match && i < nameConstraints->cExcludedSubtree; i++)
match = alt_name_matches(name,
&nameConstraints->rgExcludedSubtree[i].Base, trustErrorStatus);
&nameConstraints->rgExcludedSubtree[i].Base, trustErrorStatus, NULL);
return match;
}
static BOOL alt_name_matches_permitted_name(const CERT_ALT_NAME_ENTRY *name,
const CERT_NAME_CONSTRAINTS_INFO *nameConstraints, DWORD *trustErrorStatus)
const CERT_NAME_CONSTRAINTS_INFO *nameConstraints, DWORD *trustErrorStatus,
BOOL *present)
{
DWORD i;
BOOL match = FALSE;
for (i = 0; !match && i < nameConstraints->cPermittedSubtree; i++)
match = alt_name_matches(name,
&nameConstraints->rgPermittedSubtree[i].Base, trustErrorStatus);
&nameConstraints->rgPermittedSubtree[i].Base, trustErrorStatus,
present);
return match;
}
@ -837,14 +843,23 @@ static void CRYPT_CheckNameConstraints(
for (i = 0; i < subjectName->cAltEntry; i++)
{
BOOL nameFormPresent;
/* A name constraint only applies if the name form is present.
* From RFC 5280, section 4.2.1.10:
* "Restrictions apply only when the specified name form is
* present. If no name of the type is in the certificate,
* the certificate is acceptable."
*/
if (alt_name_matches_excluded_name(
&subjectName->rgAltEntry[i], nameConstraints,
trustErrorStatus))
*trustErrorStatus |=
CERT_TRUST_HAS_EXCLUDED_NAME_CONSTRAINT;
nameFormPresent = FALSE;
if (!alt_name_matches_permitted_name(
&subjectName->rgAltEntry[i], nameConstraints,
trustErrorStatus))
trustErrorStatus, &nameFormPresent) && nameFormPresent)
*trustErrorStatus |=
CERT_TRUST_HAS_NOT_PERMITTED_NAME_CONSTRAINT;
}