static int
regex_matches(
struct berval *pat, /* pattern to expand and match against */
char *str, /* string to match against pattern */
struct berval *dn_matches, /* buffer with $N expansion variables from DN */
struct berval *val_matches, /* buffer with $N expansion variables from val */
AclRegexMatches *matches /* offsets in buffer for $N expansion variables */
)
{
regex_t re;
char newbuf[ACL_BUF_SIZE];
struct berval bv;
int rc;
bv.bv_len = sizeof( newbuf ) - 1;
bv.bv_val = newbuf;
if (str == NULL) {
str = "";
};
acl_string_expand( &bv, pat, dn_matches, val_matches, matches );
rc = regcomp( &re, newbuf, REG_EXTENDED|REG_ICASE );
if ( rc ) {
char error[ACL_BUF_SIZE];
regerror( rc, &re, error, sizeof( error ) );
Debug( LDAP_DEBUG_TRACE,
"compile( \"%s\", \"%s\") failed %s\n",
pat->bv_val, str, error );
return( 0 );
}
rc = regexec( &re, str, 0, NULL, 0 );
regfree( &re );
Debug( LDAP_DEBUG_TRACE,
"=> regex_matches: string: %s\n", str, 0, 0 );
Debug( LDAP_DEBUG_TRACE,
"=> regex_matches: rc: %d %s\n",
rc, !rc ? "matches" : "no matches", 0 );
return( !rc );
}
static int
aci_group_member (
struct berval *subj,
const struct berval *defgrpoc,
const struct berval *defgrpat,
Operation *op,
Entry *e,
int nmatch,
regmatch_t *matches
)
{
struct berval subjdn;
struct berval grpoc;
struct berval grpat;
ObjectClass *grp_oc = NULL;
AttributeDescription *grp_ad = NULL;
const char *text;
int rc;
/* format of string is "{group|role}/objectClassValue/groupAttrName" */
if ( acl_get_part( subj, 0, '/', &subjdn ) < 0 ) {
return 0;
}
if ( acl_get_part( subj, 1, '/', &grpoc ) < 0 ) {
grpoc = *defgrpoc;
}
if ( acl_get_part( subj, 2, '/', &grpat ) < 0 ) {
grpat = *defgrpat;
}
rc = slap_bv2ad( &grpat, &grp_ad, &text );
if ( rc != LDAP_SUCCESS ) {
rc = 0;
goto done;
}
rc = 0;
grp_oc = oc_bvfind( &grpoc );
if ( grp_oc != NULL && grp_ad != NULL ) {
char buf[ ACI_BUF_SIZE ];
struct berval bv, ndn;
AclRegexMatches amatches = { 0 };
amatches.dn_count = nmatch;
memcpy( amatches.dn_data, matches, sizeof( amatches.dn_data ) );
bv.bv_len = sizeof( buf ) - 1;
bv.bv_val = (char *)&buf;
if ( acl_string_expand( &bv, &subjdn,
&e->e_nname, NULL, &amatches ) )
{
rc = LDAP_OTHER;
goto done;
}
if ( dnNormalize( 0, NULL, NULL, &bv, &ndn, op->o_tmpmemctx ) == LDAP_SUCCESS )
{
rc = ( backend_group( op, e, &ndn, &op->o_ndn,
grp_oc, grp_ad ) == 0 );
slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
}
}
done:
return rc;
}
static int
pg_dynacl_mask(
void *priv,
Operation *op,
Entry *target,
AttributeDescription *desc,
struct berval *val,
int nmatch,
regmatch_t *matches,
slap_access_t *grant,
slap_access_t *deny )
{
pg_t *pg = (pg_t *)priv;
Entry *group = NULL,
*user = NULL;
int rc;
Backend *be = op->o_bd,
*group_be = NULL,
*user_be = NULL;
struct berval group_ndn;
ACL_INVALIDATE( *deny );
/* get user */
if ( target && dn_match( &target->e_nname, &op->o_ndn ) ) {
user = target;
rc = LDAP_SUCCESS;
} else {
user_be = op->o_bd = select_backend( &op->o_ndn, 0 );
if ( op->o_bd == NULL ) {
op->o_bd = be;
return 0;
}
rc = be_entry_get_rw( op, &op->o_ndn, pg_posixAccount, pg_uidNumber, 0, &user );
}
if ( rc != LDAP_SUCCESS || user == NULL ) {
op->o_bd = be;
return 0;
}
/* get target */
if ( pg->pg_style == ACL_STYLE_EXPAND ) {
char buf[ 1024 ];
struct berval bv;
AclRegexMatches amatches = { 0 };
amatches.dn_count = nmatch;
AC_MEMCPY( amatches.dn_data, matches, sizeof( amatches.dn_data ) );
bv.bv_len = sizeof( buf ) - 1;
bv.bv_val = buf;
if ( acl_string_expand( &bv, &pg->pg_pat,
&target->e_nname,
NULL, &amatches ) )
{
goto cleanup;
}
if ( dnNormalize( 0, NULL, NULL, &bv, &group_ndn,
op->o_tmpmemctx ) != LDAP_SUCCESS )
{
/* did not expand to a valid dn */
goto cleanup;
}
} else {
group_ndn = pg->pg_pat;
}
if ( target && dn_match( &target->e_nname, &group_ndn ) ) {
group = target;
rc = LDAP_SUCCESS;
} else {
group_be = op->o_bd = select_backend( &group_ndn, 0 );
if ( op->o_bd == NULL ) {
goto cleanup;
}
rc = be_entry_get_rw( op, &group_ndn, pg_posixGroup, pg_memberUid, 0, &group );
}
if ( group_ndn.bv_val != pg->pg_pat.bv_val ) {
op->o_tmpfree( group_ndn.bv_val, op->o_tmpmemctx );
}
if ( rc == LDAP_SUCCESS && group != NULL ) {
Attribute *a_uid,
*a_member;
a_uid = attr_find( user->e_attrs, pg_uidNumber );
if ( !a_uid || !BER_BVISNULL( &a_uid->a_nvals[ 1 ] ) ) {
rc = LDAP_NO_SUCH_ATTRIBUTE;
} else {
a_member = attr_find( group->e_attrs, pg_memberUid );
if ( !a_member ) {
rc = LDAP_NO_SUCH_ATTRIBUTE;
} else {
rc = value_find_ex( pg_memberUid,
SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
a_member->a_nvals, &a_uid->a_nvals[ 0 ],
op->o_tmpmemctx );
}
}
} else {
rc = LDAP_NO_SUCH_OBJECT;
}
if ( rc == LDAP_SUCCESS ) {
ACL_LVL_ASSIGN_WRITE( *grant );
}
cleanup:;
if ( group != NULL && group != target ) {
op->o_bd = group_be;
be_entry_release_r( op, group );
op->o_bd = be;
}
if ( user != NULL && user != target ) {
op->o_bd = user_be;
be_entry_release_r( op, user );
op->o_bd = be;
}
return 0;
}
static int
gssattr_dynacl_mask(
void *priv,
Operation *op,
Entry *target,
AttributeDescription *desc,
struct berval *val,
int nmatch,
regmatch_t *matches,
slap_access_t *grant,
slap_access_t *deny )
{
gssattr_t *gssattr = (gssattr_t *)priv;
sasl_conn_t *sasl_ctx = op->o_conn->c_sasl_authctx;
gss_name_t gss_name = GSS_C_NO_NAME;
OM_uint32 major, minor;
int more = -1;
int authenticated, complete;
gss_buffer_desc attr = GSS_C_EMPTY_BUFFER;
int granted = 0;
ACL_INVALIDATE( *deny );
if ( sasl_ctx == NULL ||
sasl_getprop( sasl_ctx, SASL_GSS_PEER_NAME, (const void **)&gss_name) != 0 ||
gss_name == GSS_C_NO_NAME ) {
return 0;
}
attr.length = gssattr->gssattr_name.bv_len;
attr.value = gssattr->gssattr_name.bv_val;
while ( more != 0 ) {
AclRegexMatches amatches = { 0 };
gss_buffer_desc gss_value = GSS_C_EMPTY_BUFFER;
gss_buffer_desc gss_display_value = GSS_C_EMPTY_BUFFER;
struct berval bv_value;
major = gss_get_name_attribute( &minor, gss_name, &attr,
&authenticated, &complete,
&gss_value, &gss_display_value, &more );
if ( GSS_ERROR( major ) ) {
break;
} else if ( authenticated == 0 ) {
gss_release_buffer( &minor, &gss_value );
gss_release_buffer( &minor, &gss_display_value );
continue;
}
bv_value.bv_len = gss_value.length;
bv_value.bv_val = (char *)gss_value.value;
if ( !ber_bvccmp( &gssattr->gssattr_value, '*' ) ) {
if ( gssattr->gssattr_style != ACL_STYLE_BASE ) {
amatches.dn_count = nmatch;
AC_MEMCPY( amatches.dn_data, matches, sizeof( amatches.dn_data ) );
}
switch ( gssattr->gssattr_style ) {
case ACL_STYLE_REGEX:
/* XXX assumes value NUL terminated */
granted = regex_matches( &gssattr->gssattr_value, bv_value.bv_val,
&target->e_nname, val, &amatches );
break;
case ACL_STYLE_EXPAND: {
struct berval bv;
char buf[ACL_BUF_SIZE];
bv.bv_len = sizeof( buf ) - 1;
bv.bv_val = buf;
granted = ( acl_string_expand( &bv, &gssattr->gssattr_value,
&target->e_nname, val,
&amatches ) == 0 ) &&
( ber_bvstrcmp( &bv, &bv_value) == 0 );
break;
}
case ACL_STYLE_BASE:
granted = ( ber_bvstrcmp( &gssattr->gssattr_value, &bv_value ) == 0 );
break;
default:
assert(0);
break;
}
} else {
granted = 1;
}
gss_release_buffer( &minor, &gss_value );
gss_release_buffer( &minor, &gss_display_value );
if ( granted ) {
break;
}
}
if ( granted ) {
ACL_LVL_ASSIGN_WRITE( *grant );
}
return 0;
}
