mirror of
https://git.openldap.org/openldap/openldap.git
synced 2025-01-30 13:30:57 +08:00
use librewrite for sasl-regexp (need to #define SLAP_X_SASL_REWRITE; ITS#2886); lots of cleanup
This commit is contained in:
Pierangelo Masarati
parent
171a47c05b
commit
755210c960
@ -990,8 +990,7 @@ LDAP_SLAPD_F (int) slap_sasl_config(
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int lineno );
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LDAP_SLAPD_F (int) slap_sasl_getdn( Connection *conn, Operation *op,
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char *id, int len,
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char *user_realm, struct berval *dn, int flags );
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struct berval *id, char *user_realm, struct berval *dn, int flags );
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/*
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* saslauthz.c
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@ -1011,7 +1010,13 @@ LDAP_SLAPD_F (int) slap_sasl_authorized LDAP_P((
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LDAP_SLAPD_F (int) slap_sasl_regexp_config LDAP_P((
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const char *match, const char *replace ));
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LDAP_SLAPD_F (int) slap_sasl_setpolicy LDAP_P(( const char * ));
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#ifdef SLAP_X_SASL_REWRITE
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LDAP_SLAPD_F (int) slap_sasl_rewrite_config LDAP_P((
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const char *fname,
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int lineno,
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int argc,
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char **argv ));
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#endif SLAP_X_SASL_REWRITE
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/*
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* schema.c
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@ -20,6 +20,7 @@
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#include <ac/stdlib.h>
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#include <ac/string.h>
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#include <ac/ctype.h>
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#include "slap.h"
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@ -72,6 +73,12 @@ typedef struct sasl_regexp {
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static int nSaslRegexp = 0;
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static SaslRegexp_t *SaslRegexp = NULL;
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#ifdef SLAP_X_SASL_REWRITE
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#include "rewrite.h"
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struct rewrite_info *sasl_rwinfo = NULL;
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#define AUTHID_CONTEXT "authid"
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#endif /* SLAP_X_SASL_REWRITE */
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/* What SASL proxy authorization policies are allowed? */
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#define SASL_AUTHZ_NONE 0x00
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#define SASL_AUTHZ_FROM 0x01
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@ -106,7 +113,7 @@ int slap_parse_user( struct berval *id, struct berval *user,
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char u;
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assert( id );
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assert( id->bv_val );
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assert( !BER_BVISNULL( id ) );
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assert( user );
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assert( realm );
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assert( mech );
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@ -123,7 +130,7 @@ int slap_parse_user( struct berval *id, struct berval *user,
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*/
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user->bv_val = strchr( id->bv_val, ':' );
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if ( user->bv_val == NULL ) {
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if ( BER_BVISNULL( user ) ) {
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return LDAP_PROTOCOL_ERROR;
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}
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user->bv_val[ 0 ] = '\0';
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@ -131,13 +138,13 @@ int slap_parse_user( struct berval *id, struct berval *user,
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user->bv_len = id->bv_len - ( user->bv_val - id->bv_val );
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mech->bv_val = strchr( id->bv_val, '.' );
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if ( mech->bv_val != NULL ) {
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if ( !BER_BVISNULL( mech ) ) {
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mech->bv_val[ 0 ] = '\0';
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mech->bv_val++;
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realm->bv_val = strchr( mech->bv_val, '/' );
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if ( realm->bv_val ) {
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if ( !BER_BVISNULL( realm ) ) {
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realm->bv_val[ 0 ] = '\0';
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realm->bv_val++;
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mech->bv_len = realm->bv_val - mech->bv_val - 1;
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@ -147,21 +154,21 @@ int slap_parse_user( struct berval *id, struct berval *user,
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}
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} else {
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realm->bv_val = NULL;
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BER_BVZERO( realm );
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}
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if ( id->bv_val[ 1 ] != '\0' ) {
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return LDAP_PROTOCOL_ERROR;
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}
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if ( mech->bv_val != NULL ) {
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if ( !BER_BVISNULL( mech ) ) {
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assert( mech->bv_val == id->bv_val + 2 );
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AC_MEMCPY( mech->bv_val - 2, mech->bv_val, mech->bv_len + 1 );
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mech->bv_val -= 2;
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}
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if ( realm->bv_val ) {
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if ( !BER_BVISNULL( realm ) ) {
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assert( realm->bv_val >= id->bv_val + 2 );
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AC_MEMCPY( realm->bv_val - 2, realm->bv_val, realm->bv_len + 1 );
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@ -185,13 +192,10 @@ static int slap_parseURI( Operation *op, struct berval *uri,
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int rc;
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LDAPURLDesc *ludp;
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assert( uri != NULL && uri->bv_val != NULL );
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base->bv_val = NULL;
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base->bv_len = 0;
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nbase->bv_val = NULL;
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nbase->bv_len = 0;
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fstr->bv_val = NULL;
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fstr->bv_len = 0;
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assert( uri != NULL && !BER_BVISNULL( uri ) );
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BER_BVZERO( base );
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BER_BVZERO( nbase );
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BER_BVZERO( fstr );
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*scope = -1;
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*filter = NULL;
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@ -204,30 +208,30 @@ static int slap_parseURI( Operation *op, struct berval *uri,
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#endif
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rc = LDAP_PROTOCOL_ERROR;
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if ( !strncasecmp( uri->bv_val, "dn", sizeof( "dn" ) - 1 ) ) {
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bv.bv_val = uri->bv_val + sizeof( "dn" ) - 1;
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if ( !strncasecmp( uri->bv_val, "dn", STRLENOF( "dn" ) ) ) {
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bv.bv_val = uri->bv_val + STRLENOF( "dn" );
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if ( bv.bv_val[ 0 ] == '.' ) {
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bv.bv_val++;
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if ( !strncasecmp( bv.bv_val, "exact:", sizeof( "exact:" ) - 1 ) ) {
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bv.bv_val += sizeof( "exact" ) - 1;
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if ( !strncasecmp( bv.bv_val, "exact:", STRLENOF( "exact:" ) ) ) {
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bv.bv_val += STRLENOF( "exact:" );
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*scope = LDAP_X_SCOPE_EXACT;
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} else if ( !strncasecmp( bv.bv_val, "regex:", sizeof( "regex:" ) - 1 ) ) {
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bv.bv_val += sizeof( "regex" ) - 1;
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} else if ( !strncasecmp( bv.bv_val, "regex:", STRLENOF( "regex:" ) ) ) {
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bv.bv_val += STRLENOF( "regex:" );
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*scope = LDAP_X_SCOPE_REGEX;
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} else if ( !strncasecmp( bv.bv_val, "children:", sizeof( "chldren:" ) - 1 ) ) {
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bv.bv_val += sizeof( "children" ) - 1;
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} else if ( !strncasecmp( bv.bv_val, "children:", STRLENOF( "chldren:" ) ) ) {
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bv.bv_val += STRLENOF( "children:" );
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*scope = LDAP_X_SCOPE_CHILDREN;
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} else if ( !strncasecmp( bv.bv_val, "subtree:", sizeof( "subtree:" ) - 1 ) ) {
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bv.bv_val += sizeof( "subtree" ) - 1;
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} else if ( !strncasecmp( bv.bv_val, "subtree:", STRLENOF( "subtree:" ) ) ) {
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bv.bv_val += STRLENOF( "subtree:" );
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*scope = LDAP_X_SCOPE_SUBTREE;
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} else if ( !strncasecmp( bv.bv_val, "onelevel:", sizeof( "onelevel:" ) - 1 ) ) {
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bv.bv_val += sizeof( "onelevel" ) - 1;
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} else if ( !strncasecmp( bv.bv_val, "onelevel:", STRLENOF( "onelevel:" ) ) ) {
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bv.bv_val += STRLENOF( "onelevel:" );
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*scope = LDAP_X_SCOPE_ONELEVEL;
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} else {
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@ -293,14 +297,13 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val);
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return rc;
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}
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if ( mech.bv_val ) {
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if ( !BER_BVISNULL( &mech ) ) {
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c.c_sasl_bind_mech = mech;
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} else {
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c.c_sasl_bind_mech.bv_val = "AUTHZ";
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c.c_sasl_bind_mech.bv_len = sizeof( "AUTHZ" ) - 1;
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BER_BVSTR( &c.c_sasl_bind_mech, "AUTHZ" );
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}
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rc = slap_sasl_getdn( &c, op, user.bv_val, user.bv_len,
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rc = slap_sasl_getdn( &c, op, &user,
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realm.bv_val, nbase, SLAP_GETDN_AUTHZID );
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if ( rc == LDAP_SUCCESS ) {
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@ -351,10 +354,8 @@ is_dn: bv.bv_len = uri->bv_len - (bv.bv_val - uri->bv_val);
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done:
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if( rc != LDAP_SUCCESS ) {
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if( *filter ) filter_free_x( op, *filter );
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base->bv_val = NULL;
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base->bv_len = 0;
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fstr->bv_val = NULL;
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fstr->bv_len = 0;
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BER_BVZERO( base );
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BER_BVZERO( fstr );
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} else {
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/* Don't free these, return them to caller */
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ludp->lud_filter = NULL;
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@ -405,8 +406,101 @@ static int slap_sasl_rx_off(char *rep, int *off)
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return( LDAP_SUCCESS );
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}
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#ifdef SLAP_X_SASL_REWRITE
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int slap_sasl_rewrite_config(
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const char *fname,
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int lineno,
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int argc,
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char **argv
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)
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{
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int rc;
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char *savearg0;
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/* init at first call */
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if ( sasl_rwinfo == NULL ) {
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sasl_rwinfo = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
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}
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/* strip "authid-" prefix for parsing */
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savearg0 = argv[0];
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argv[0] += STRLENOF( "authid-" );
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rc = rewrite_parse( sasl_rwinfo, fname, lineno, argc, argv );
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argv[0] = savearg0;
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return rc;
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}
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int slap_sasl_rewrite_destroy( void )
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{
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if ( sasl_rwinfo ) {
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rewrite_info_delete( sasl_rwinfo );
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sasl_rwinfo = NULL;
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}
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return 0;
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}
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int slap_sasl_regexp_rewrite_config(
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const char *fname,
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int lineno,
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const char *match,
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const char *replace,
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const char *context )
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{
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int rc;
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char *newreplace, *p;
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char *argvRule[] = { "rewriteRule", NULL, NULL, "@", NULL };
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/* init at first call */
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if ( sasl_rwinfo == NULL ) {
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char *argvEngine[] = { "rewriteEngine", "on", NULL };
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char *argvContext[] = { "rewriteContext", NULL, NULL };
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char *argvFirstRule[] = { "rewriteRule", ".*",
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"%{>" AUTHID_CONTEXT "(%0)}", ":", NULL };
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/* initialize rewrite engine */
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sasl_rwinfo = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
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/* switch on rewrite engine */
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rc = rewrite_parse( sasl_rwinfo, fname, lineno, 2, argvEngine );
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if (rc != LDAP_SUCCESS) {
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return rc;
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}
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/* create generic authid context */
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argvContext[1] = AUTHID_CONTEXT;
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rc = rewrite_parse( sasl_rwinfo, fname, lineno, 2, argvContext );
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if (rc != LDAP_SUCCESS) {
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return rc;
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}
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}
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newreplace = ch_strdup( replace );
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for (p = strchr( newreplace, '$' ); p; p = strchr( p + 1, '$' ) ) {
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if ( isdigit( p[1] ) ) {
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p[0] = '%';
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} else {
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p++;
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}
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}
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argvRule[1] = (char *)match;
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argvRule[2] = newreplace;
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rc = rewrite_parse( sasl_rwinfo, fname, lineno, 4, argvRule );
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ch_free( newreplace );
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return rc;
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}
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#endif /* SLAP_X_SASL_REWRITE */
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int slap_sasl_regexp_config( const char *match, const char *replace )
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{
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#ifdef SLAP_X_SASL_REWRITE
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return slap_sasl_regexp_rewrite_config( "sasl-regexp", 0,
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match, replace, AUTHID_CONTEXT );
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#else /* ! SLAP_X_SASL_REWRITE */
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int rc;
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SaslRegexp_t *reg;
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@ -439,9 +533,9 @@ int slap_sasl_regexp_config( const char *match, const char *replace )
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nSaslRegexp++;
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return( LDAP_SUCCESS );
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#endif /* ! SLAP_X_SASL_REWRITE */
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}
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/* Perform replacement on regexp matches */
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static void slap_sasl_rx_exp(
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const char *rep,
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@ -501,6 +595,44 @@ static void slap_sasl_rx_exp(
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static int slap_sasl_regexp( struct berval *in, struct berval *out,
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int flags, void *ctx )
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{
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#ifdef SLAP_X_SASL_REWRITE
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const char *context = AUTHID_CONTEXT;
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if ( sasl_rwinfo == NULL || BER_BVISNULL( in ) ) {
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return 0;
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}
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/* FIXME: if aware of authc/authz mapping,
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* we could use different contexts ... */
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switch ( rewrite_session( sasl_rwinfo, context, in->bv_val, NULL,
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&out->bv_val ) )
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{
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case REWRITE_REGEXEC_OK:
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if ( !BER_BVISNULL( out ) ) {
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char *val = out->bv_val;
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ber_str2bv_x( val, 0, 1, out, ctx );
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free( val );
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} else {
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ber_dupbv_x( out, in, ctx );
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}
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#ifdef NEW_LOGGING
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LDAP_LOG( BACK_LDAP, DETAIL1,
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"[rw] %s: \"%s\" -> \"%s\"\n",
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context, in->bv_val, out->bv_val );
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#else /* !NEW_LOGGING */
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Debug( LDAP_DEBUG_ARGS,
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"[rw] %s: \"%s\" -> \"%s\"\n",
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context, in->bv_val, out->bv_val );
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#endif /* !NEW_LOGGING */
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return 1;
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case REWRITE_REGEXEC_UNWILLING:
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case REWRITE_REGEXEC_ERR:
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default:
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return 0;
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}
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#else /* ! SLAP_X_SASL_REWRITE */
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char *saslname = in->bv_val;
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SaslRegexp_t *reg;
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regmatch_t sr_strings[SASLREGEX_REPLACE]; /* strings matching $1,$2 ... */
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@ -540,14 +672,15 @@ static int slap_sasl_regexp( struct berval *in, struct berval *out,
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#ifdef NEW_LOGGING
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LDAP_LOG( TRANSPORT, ENTRY,
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"slap_sasl_regexp: converted SASL name to %s\n",
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out->bv_len ? out->bv_val : "", 0, 0 );
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BER_BVISEMPTY( out ) ? "" : out->bv_val, 0, 0 );
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#else
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Debug( LDAP_DEBUG_TRACE,
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"slap_sasl_regexp: converted SASL name to %s\n",
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out->bv_len ? out->bv_val : "", 0, 0 );
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BER_BVISEMPTY( out ) ? "" : out->bv_val, 0, 0 );
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#endif
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return( 1 );
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#endif /* ! SLAP_X_SASL_REWRITE */
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}
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/* This callback actually does some work...*/
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@ -558,10 +691,9 @@ static int sasl_sc_sasl2dn( Operation *o, SlapReply *rs )
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if (rs->sr_type != REP_SEARCH) return 0;
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/* We only want to be called once */
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if( ndn->bv_val ) {
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if ( !BER_BVISNULL( ndn ) ) {
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o->o_tmpfree(ndn->bv_val, o->o_tmpmemctx);
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ndn->bv_val = NULL;
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ndn->bv_len = 0;
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BER_BVZERO( ndn );
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#ifdef NEW_LOGGING
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LDAP_LOG( TRANSPORT, DETAIL1,
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@ -658,11 +790,18 @@ exact_match:
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} else if ( d > 0 ) {
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struct berval bv;
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/* leave room for at least one char of attributeType,
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* one for '=' and one for ',' */
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if ( d < STRLENOF( "x=,") ) {
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goto CONCLUDED;
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}
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bv.bv_len = op.o_req_ndn.bv_len;
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bv.bv_val = assertDN->bv_val + d;
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if ( bv.bv_val[ -1 ] == ',' && dn_match( &op.o_req_ndn, &bv ) ) {
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switch ( op.oq_search.rs_scope ) {
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case LDAP_X_SCOPE_SUBTREE:
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case LDAP_X_SCOPE_CHILDREN:
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rc = LDAP_SUCCESS;
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break;
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@ -813,7 +952,7 @@ slap_sasl_check_authz( Operation *op,
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/* Check if the *assertDN matches any **vals */
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if( vals != NULL ) {
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for( i=0; vals[i].bv_val != NULL; i++ ) {
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for( i=0; !BER_BVISNULL( &vals[i] ); i++ ) {
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rc = slap_sasl_match( op, &vals[i], assertDN, authc );
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if ( rc == LDAP_SUCCESS ) goto COMPLETE;
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}
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@ -875,8 +1014,8 @@ void slap_sasl2dn( Operation *opx,
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rc = slap_parseURI( opx, ®out, &op.o_req_dn,
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&op.o_req_ndn, &op.oq_search.rs_scope, &op.oq_search.rs_filter,
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&op.ors_filterstr );
|
||||
if( regout.bv_val ) sl_free( regout.bv_val, opx->o_tmpmemctx );
|
||||
if( rc != LDAP_SUCCESS ) {
|
||||
if ( !BER_BVISNULL( ®out ) ) sl_free( regout.bv_val, opx->o_tmpmemctx );
|
||||
if ( rc != LDAP_SUCCESS ) {
|
||||
goto FINISHED;
|
||||
}
|
||||
|
||||
@ -888,8 +1027,7 @@ void slap_sasl2dn( Operation *opx,
|
||||
case LDAP_SCOPE_BASE:
|
||||
case LDAP_X_SCOPE_EXACT:
|
||||
*sasldn = op.o_req_ndn;
|
||||
op.o_req_ndn.bv_len = 0;
|
||||
op.o_req_ndn.bv_val = NULL;
|
||||
BER_BVZERO( &op.o_req_ndn );
|
||||
/* intentionally continue to next case */
|
||||
|
||||
case LDAP_X_SCOPE_REGEX:
|
||||
@ -945,26 +1083,28 @@ void slap_sasl2dn( Operation *opx,
|
||||
op.oq_search.rs_slimit = 1;
|
||||
op.oq_search.rs_tlimit = -1;
|
||||
op.oq_search.rs_attrsonly = 1;
|
||||
op.o_req_dn = op.o_req_ndn;
|
||||
/* use req_ndn as req_dn instead of non-pretty base of uri */
|
||||
if( !BER_BVISNULL( &op.o_req_dn ) ) ch_free( op.o_req_dn.bv_val );
|
||||
ber_dupbv_x( &op.o_req_dn, &op.o_req_ndn, op.o_tmpmemctx );
|
||||
|
||||
op.o_bd->be_search( &op, &rs );
|
||||
|
||||
FINISHED:
|
||||
if( sasldn->bv_len ) {
|
||||
if( !BER_BVISEMPTY( sasldn ) ) {
|
||||
opx->o_conn->c_authz_backend = op.o_bd;
|
||||
}
|
||||
if( op.o_req_dn.bv_len ) ch_free( op.o_req_dn.bv_val );
|
||||
if( op.o_req_ndn.bv_len ) sl_free( op.o_req_ndn.bv_val, opx->o_tmpmemctx );
|
||||
if( !BER_BVISNULL( &op.o_req_dn ) ) sl_free( op.o_req_dn.bv_val, opx->o_tmpmemctx );
|
||||
if( !BER_BVISNULL( &op.o_req_ndn ) ) sl_free( op.o_req_ndn.bv_val, opx->o_tmpmemctx );
|
||||
if( op.oq_search.rs_filter ) filter_free_x( opx, op.oq_search.rs_filter );
|
||||
if( op.ors_filterstr.bv_len ) ch_free( op.ors_filterstr.bv_val );
|
||||
if( !BER_BVISNULL( &op.ors_filterstr ) ) ch_free( op.ors_filterstr.bv_val );
|
||||
|
||||
#ifdef NEW_LOGGING
|
||||
LDAP_LOG( TRANSPORT, ENTRY,
|
||||
"slap_sasl2dn: Converted SASL name to %s\n",
|
||||
sasldn->bv_len ? sasldn->bv_val : "<nothing>", 0, 0 );
|
||||
!BER_BVISEMPTY( sasldn ) ? sasldn->bv_val : "<nothing>", 0, 0 );
|
||||
#else
|
||||
Debug( LDAP_DEBUG_TRACE, "<==slap_sasl2dn: Converted SASL name to %s\n",
|
||||
sasldn->bv_len ? sasldn->bv_val : "<nothing>", 0, 0 );
|
||||
!BER_BVISEMPTY( sasldn ) ? sasldn->bv_val : "<nothing>", 0, 0 );
|
||||
#endif
|
||||
|
||||
return;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user