external/bsd/openldap/dist/servers/slapd/operation.c

   1 /* operation.c - routines to deal with pending ldap operations */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/operation.c,v 1.75.2.8 2008/02/12 20:48:44 quanah Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/string.h>
  32 #include <ac/socket.h>
  33
  34 #include "slap.h"
  35
  36 #ifdef LDAP_SLAPI
  37 #include "slapi/slapi.h"
  38 #endif
  39
  40 static ldap_pvt_thread_mutex_t  slap_op_mutex;
  41 static time_t last_time;
  42 static int last_incr;
  43
  44 void slap_op_init(void)
  45 {
  46         ldap_pvt_thread_mutex_init( &slap_op_mutex );
  47 }
  48
  49 void slap_op_destroy(void)
  50 {
  51         ldap_pvt_thread_mutex_destroy( &slap_op_mutex );
  52 }
  53
  54 static void
  55 slap_op_q_destroy( void *key, void *data )
  56 {
  57         Operation *op, *op2;
  58         for ( op = data; op; op = op2 ) {
  59                 op2 = LDAP_STAILQ_NEXT( op, o_next );
  60                 ber_memfree_x( op, NULL );
  61         }
  62 }
  63
  64 void
  65 slap_op_groups_free( Operation *op )
  66 {
  67         GroupAssertion *g, *n;
  68         for ( g = op->o_groups; g; g = n ) {
  69                 n = g->ga_next;
  70                 slap_sl_free( g, op->o_tmpmemctx );
  71         }
  72         op->o_groups = NULL;
  73 }
  74
  75 void
  76 slap_op_free( Operation *op, void *ctx )
  77 {
  78         OperationBuffer *opbuf;
  79
  80         assert( LDAP_STAILQ_NEXT(op, o_next) == NULL );
  81
  82         if ( op->o_ber != NULL ) {
  83                 ber_free( op->o_ber, 1 );
  84         }
  85         if ( !BER_BVISNULL( &op->o_dn ) ) {
  86                 ch_free( op->o_dn.bv_val );
  87         }
  88         if ( !BER_BVISNULL( &op->o_ndn ) ) {
  89                 ch_free( op->o_ndn.bv_val );
  90         }
  91         if ( !BER_BVISNULL( &op->o_authmech ) ) {
  92                 ch_free( op->o_authmech.bv_val );
  93         }
  94         if ( op->o_ctrls != NULL ) {
  95                 slap_free_ctrls( op, op->o_ctrls );
  96         }
  97
  98 #ifdef LDAP_CONNECTIONLESS
  99         if ( op->o_res_ber != NULL ) {
 100                 ber_free( op->o_res_ber, 1 );
 101         }
 102 #endif
 103
 104         if ( op->o_groups ) {
 105                 slap_op_groups_free( op );
 106         }
 107
 108 #if defined( LDAP_SLAPI )
 109         if ( slapi_plugins_used ) {
 110                 slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, op );
 111         }
 112 #endif /* defined( LDAP_SLAPI ) */
 113
 114         opbuf = (OperationBuffer *) op;
 115         memset( opbuf, 0, sizeof(*opbuf) );
 116         op->o_hdr = &opbuf->ob_hdr;
 117         op->o_controls = opbuf->ob_controls;
 118
 119         if ( ctx ) {
 120                 void *op2 = NULL;
 121                 ldap_pvt_thread_pool_setkey( ctx, (void *)slap_op_free,
 122                         op, slap_op_q_destroy, &op2, NULL );
 123                 LDAP_STAILQ_NEXT( op, o_next ) = op2;
 124         } else {
 125                 ber_memfree_x( op, NULL );
 126         }
 127 }
 128
 129 void
 130 slap_op_time(time_t *t, int *nop)
 131 {
 132         ldap_pvt_thread_mutex_lock( &slap_op_mutex );
 133         *t = slap_get_time();
 134         if ( *t == last_time ) {
 135                 *nop = ++last_incr;
 136         } else {
 137                 last_time = *t;
 138                 last_incr = 0;
 139                 *nop = 0;
 140         }
 141         ldap_pvt_thread_mutex_unlock( &slap_op_mutex );
 142 }
 143
 144 Operation *
 145 slap_op_alloc(
 146     BerElement          *ber,
 147     ber_int_t   msgid,
 148     ber_tag_t   tag,
 149     ber_int_t   id,
 150         void *ctx )
 151 {
 152         Operation       *op = NULL;
 153
 154         if ( ctx ) {
 155                 void *otmp = NULL;
 156                 ldap_pvt_thread_pool_getkey( ctx, (void *)slap_op_free, &otmp, NULL );
 157                 if ( otmp ) {
 158                         op = otmp;
 159                         otmp = LDAP_STAILQ_NEXT( op, o_next );
 160                         ldap_pvt_thread_pool_setkey( ctx, (void *)slap_op_free,
 161                                 otmp, slap_op_q_destroy, NULL, NULL );
 162                 }
 163         }
 164         if (!op) {
 165                 op = (Operation *) ch_calloc( 1, sizeof(OperationBuffer) );
 166                 op->o_hdr = &((OperationBuffer *) op)->ob_hdr;
 167                 op->o_controls = ((OperationBuffer *) op)->ob_controls;
 168         }
 169
 170         op->o_ber = ber;
 171         op->o_msgid = msgid;
 172         op->o_tag = tag;
 173
 174         slap_op_time( &op->o_time, &op->o_tincr );
 175         op->o_opid = id;
 176         op->o_res_ber = NULL;
 177
 178 #if defined( LDAP_SLAPI )
 179         if ( slapi_plugins_used ) {
 180                 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
 181         }
 182 #endif /* defined( LDAP_SLAPI ) */
 183
 184         return( op );
 185 }
 186
 187 slap_op_t
 188 slap_req2op( ber_tag_t tag )
 189 {
 190         switch ( tag ) {
 191         case LDAP_REQ_BIND:
 192                 return SLAP_OP_BIND;
 193         case LDAP_REQ_UNBIND:
 194                 return SLAP_OP_UNBIND;
 195         case LDAP_REQ_ADD:
 196                 return SLAP_OP_ADD;
 197         case LDAP_REQ_DELETE:
 198                 return SLAP_OP_DELETE;
 199         case LDAP_REQ_MODRDN:
 200                 return SLAP_OP_MODRDN;
 201         case LDAP_REQ_MODIFY:
 202                 return SLAP_OP_MODIFY;
 203         case LDAP_REQ_COMPARE:
 204                 return SLAP_OP_COMPARE;
 205         case LDAP_REQ_SEARCH:
 206                 return SLAP_OP_SEARCH;
 207         case LDAP_REQ_ABANDON:
 208                 return SLAP_OP_ABANDON;
 209         case LDAP_REQ_EXTENDED:
 210                 return SLAP_OP_EXTENDED;
 211         }
 212
 213         return SLAP_OP_LAST;
 214 }