#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#define AVL_INTERNAL
#include "slap.h"
#include "back-ldap.h"
#define PRINT_CONNTREE 0
static LDAP_REBIND_PROC ldap_back_rebind;
int
ldap_back_bind(
Backend *be,
Connection *conn,
Operation *op,
struct berval *dn,
struct berval *ndn,
int method,
struct berval *cred,
struct berval *edn
)
{
struct ldapinfo *li = (struct ldapinfo *) be->be_private;
struct ldapconn *lc;
struct berval mdn = { 0, NULL };
int rc = 0;
lc = ldap_back_getconn(li, conn, op);
if ( !lc ) {
return( -1 );
}
if ( op->o_ctrls ) {
if ( ldap_set_option( lc->ld, LDAP_OPT_SERVER_CONTROLS,
op->o_ctrls ) != LDAP_SUCCESS ) {
ldap_back_op_result( lc, op );
return( -1 );
}
}
#ifdef ENABLE_REWRITE
switch ( rewrite_session( li->rwinfo, "bindDn", dn->bv_val, conn, &mdn.bv_val ) ) {
case REWRITE_REGEXEC_OK:
if ( mdn.bv_val == NULL ) {
mdn.bv_val = ( char * )dn->bv_val;
}
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDAP, DETAIL1,
"[rw] bindDn: \"%s\" -> \"%s\"\n", dn->bv_val, mdn.bv_val, 0 );
#else
Debug( LDAP_DEBUG_ARGS, "rw> bindDn: \"%s\" -> \"%s\"\n%s",
dn->bv_val, mdn.bv_val, "" );
#endif
break;
case REWRITE_REGEXEC_UNWILLING:
send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
NULL, "Operation not allowed", NULL, NULL );
return( -1 );
case REWRITE_REGEXEC_ERR:
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "Rewrite error", NULL, NULL );
return( -1 );
}
#else
ldap_back_dn_massage( li, dn, &mdn, 0, 1 );
#endif
rc = ldap_bind_s(lc->ld, mdn.bv_val, cred->bv_val, method);
if (rc != LDAP_SUCCESS) {
rc = ldap_back_op_result( lc, op );
} else {
lc->bound = 1;
}
if ( li->savecred ) {
if ( lc->cred.bv_val ) {
memset( lc->cred.bv_val, 0, lc->cred.bv_len );
ch_free( lc->cred.bv_val );
}
ber_dupbv( &lc->cred, cred );
ldap_set_rebind_proc( lc->ld, ldap_back_rebind, lc );
}
if ( lc->bound_dn.bv_val )
ch_free( lc->bound_dn.bv_val );
if ( mdn.bv_val != dn->bv_val ) {
lc->bound_dn = mdn;
} else {
ber_dupbv( &lc->bound_dn, dn );
}
return( rc );
}
int
ldap_back_conn_cmp(
const void *c1,
const void *c2
)
{
const struct ldapconn *lc1 = (const struct ldapconn *)c1;
const struct ldapconn *lc2 = (const struct ldapconn *)c2;
return SLAP_PTRCMP(lc1->conn, lc2->conn);
}
int
ldap_back_conn_dup(
void *c1,
void *c2
)
{
struct ldapconn *lc1 = (struct ldapconn *)c1;
struct ldapconn *lc2 = (struct ldapconn *)c2;
return( ( lc1->conn == lc2->conn ) ? -1 : 0 );
}
#if PRINT_CONNTREE > 0
static void ravl_print( Avlnode *root, int depth )
{
int i;
if ( root == 0 )
return;
ravl_print( root->avl_right, depth+1 );
for ( i = 0; i < depth; i++ )
printf( " " );
printf( "c(%ld) %d\n", ((struct ldapconn *) root->avl_data)->conn->c_connid, root->avl_bf );
ravl_print( root->avl_left, depth+1 );
}
static void myprint( Avlnode *root )
{
printf( "********\n" );
if ( root == 0 )
printf( "\tNULL\n" );
else
ravl_print( root, 0 );
printf( "********\n" );
}
#endif
struct ldapconn *
ldap_back_getconn(struct ldapinfo *li, Connection *conn, Operation *op)
{
struct ldapconn *lc, lc_curr;
LDAP *ld;
lc_curr.conn = conn;
ldap_pvt_thread_mutex_lock( &li->conn_mutex );
lc = (struct ldapconn *)avl_find( li->conntree,
(caddr_t)&lc_curr, ldap_back_conn_cmp );
ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
if (!lc) {
int vers = conn->c_protocol;
int err = ldap_initialize(&ld, li->url);
if (err != LDAP_SUCCESS) {
err = ldap_back_map_result(err);
send_ldap_result( conn, op, err,
NULL, "ldap_initialize() failed", NULL, NULL );
return( NULL );
}
ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &vers);
lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
lc->conn = conn;
lc->ld = ld;
lc->cred.bv_len = 0;
lc->cred.bv_val = NULL;
#ifdef ENABLE_REWRITE
( void )rewrite_session_init( li->rwinfo, conn );
#endif
if ( lc->conn->c_dn.bv_len != 0 ) {
#ifdef ENABLE_REWRITE
lc->bound_dn.bv_val = NULL;
lc->bound_dn.bv_len = 0;
switch ( rewrite_session( li->rwinfo, "bindDn",
lc->conn->c_dn.bv_val, conn,
&lc->bound_dn.bv_val ) ) {
case REWRITE_REGEXEC_OK:
if ( lc->bound_dn.bv_val == NULL ) {
ber_dupbv( &lc->bound_dn,
&lc->conn->c_dn );
}
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDAP, DETAIL1,
"[rw] bindDn: \"%s\" ->"
" \"%s\"\n%s",
lc->conn->c_dn.bv_val,
lc->bound_dn.bv_val, "" );
#else
Debug( LDAP_DEBUG_ARGS,
"rw> bindDn: \"%s\" ->"
" \"%s\"\n%s",
lc->conn->c_dn.bv_val,
lc->bound_dn.bv_val, "" );
#endif
break;
case REWRITE_REGEXEC_UNWILLING:
send_ldap_result( conn, op,
LDAP_UNWILLING_TO_PERFORM,
NULL, "Operation not allowed",
NULL, NULL );
return( NULL );
case REWRITE_REGEXEC_ERR:
send_ldap_result( conn, op,
LDAP_OTHER,
NULL, "Rewrite error",
NULL, NULL );
return( NULL );
}
#else
struct berval bv;
ldap_back_dn_massage( li, &lc->conn->c_dn, &bv, 0, 1 );
if ( bv.bv_val == lc->conn->c_dn.bv_val ) {
ber_dupbv( &lc->bound_dn, &bv );
} else {
lc->bound_dn = bv;
}
#endif
} else {
lc->bound_dn.bv_val = NULL;
lc->bound_dn.bv_len = 0;
}
lc->bound = 0;
ldap_pvt_thread_mutex_lock( &li->conn_mutex );
err = avl_insert( &li->conntree, (caddr_t)lc,
ldap_back_conn_cmp, ldap_back_conn_dup );
#if PRINT_CONNTREE > 0
myprint( li->conntree );
#endif
ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDAP, INFO,
"ldap_back_getconn: conn %ld inserted\n", lc->conn->c_connid, 0, 0);
#else
Debug( LDAP_DEBUG_TRACE,
"=>ldap_back_getconn: conn %ld inserted\n%s%s",
lc->conn->c_connid, "", "" );
#endif
if ( err != 0 ) {
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "internal server error", NULL, NULL );
return( NULL );
}
} else {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDAP, INFO,
"ldap_back_getconn: conn %ld inserted\n",
lc->conn->c_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"=>ldap_back_getconn: conn %ld fetched%s%s\n",
lc->conn->c_connid, "", "" );
#endif
}
return( lc );
}
int
ldap_back_dobind( struct ldapconn *lc, Operation *op )
{
if ( op->o_ctrls ) {
if ( ldap_set_option( lc->ld, LDAP_OPT_SERVER_CONTROLS,
op->o_ctrls ) != LDAP_SUCCESS ) {
ldap_back_op_result( lc, op );
return( 0 );
}
}
if ( lc->bound ) {
return( lc->bound );
}
if ( ldap_bind_s( lc->ld, lc->bound_dn.bv_val, lc->cred.bv_val,
LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
ldap_back_op_result( lc, op );
return( 0 );
}
return( lc->bound = 1 );
}
static int
ldap_back_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
ber_int_t msgid, void *params )
{
struct ldapconn *lc = params;
return ldap_bind_s( ld, lc->bound_dn.bv_val, lc->cred.bv_val, LDAP_AUTH_SIMPLE );
}
int
ldap_back_map_result(int err)
{
switch(err)
{
case LDAP_SERVER_DOWN:
return LDAP_UNAVAILABLE;
case LDAP_LOCAL_ERROR:
return LDAP_OTHER;
case LDAP_ENCODING_ERROR:
case LDAP_DECODING_ERROR:
return LDAP_PROTOCOL_ERROR;
case LDAP_TIMEOUT:
return LDAP_UNAVAILABLE;
case LDAP_AUTH_UNKNOWN:
return LDAP_AUTH_METHOD_NOT_SUPPORTED;
case LDAP_FILTER_ERROR:
return LDAP_OTHER;
case LDAP_USER_CANCELLED:
return LDAP_OTHER;
case LDAP_PARAM_ERROR:
return LDAP_PROTOCOL_ERROR;
case LDAP_NO_MEMORY:
return LDAP_OTHER;
case LDAP_CONNECT_ERROR:
return LDAP_UNAVAILABLE;
case LDAP_NOT_SUPPORTED:
return LDAP_UNWILLING_TO_PERFORM;
case LDAP_CONTROL_NOT_FOUND:
return LDAP_PROTOCOL_ERROR;
case LDAP_NO_RESULTS_RETURNED:
return LDAP_NO_SUCH_OBJECT;
case LDAP_MORE_RESULTS_TO_RETURN:
return LDAP_OTHER;
case LDAP_CLIENT_LOOP:
case LDAP_REFERRAL_LIMIT_EXCEEDED:
return LDAP_LOOP_DETECT;
default:
if LDAP_API_ERROR(err)
return LDAP_OTHER;
else
return err;
}
}
int
ldap_back_op_result(struct ldapconn *lc, Operation *op)
{
int err = LDAP_SUCCESS;
char *msg = NULL;
char *match = NULL;
ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER, &err);
ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &msg);
ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
err = ldap_back_map_result(err);
#ifdef ENABLE_REWRITE
send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
if ( match ) {
free( match );
}
#else
send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
if ( match ) {
free( match );
}
#endif
if ( msg ) free( msg );
return( (err==LDAP_SUCCESS) ? 0 : -1 );
}