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openldap  2.4.31
Classes | Defines | Typedefs | Functions | Variables
acl.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/regex.h>
#include <ac/socket.h>
#include <ac/string.h>
#include "slap.h"
#include "sets.h"
#include "lber_pvt.h"
#include "lutil.h"

Go to the source code of this file.

Classes

struct  acl_set_gather_t

Defines

#define ACL_BUF_SIZE   1024 /* use most appropriate size */
#define asc_op   asc_cookie.set_op
#define MATCHES_DNMAXCOUNT(m)   ( sizeof ( (m)->dn_data ) / sizeof( *(m)->dn_data ) )
#define MATCHES_VALMAXCOUNT(m)   ( sizeof ( (m)->val_data ) / sizeof( *(m)->val_data ) )
#define MATCHES_MEMSET(m)
#define ACL_RECORD_VALUE_STATE

Typedefs

typedef struct AclSetCookie AclSetCookie
typedef struct acl_set_gather_t acl_set_gather_t

Functions

static AccessControlslap_acl_get (AccessControl *ac, int *count, Operation *op, Entry *e, AttributeDescription *desc, struct berval *val, AclRegexMatches *matches, slap_mask_t *mask, AccessControlState *state)
static slap_control_t slap_acl_mask (AccessControl *ac, AccessControl *prev, slap_mask_t *mask, Operation *op, Entry *e, AttributeDescription *desc, struct berval *val, AclRegexMatches *matches, int count, AccessControlState *state, slap_access_t access)
static int regex_matches (struct berval *pat, char *str, struct berval *dn_matches, struct berval *val_matches, AclRegexMatches *matches)
int slap_access_always_allowed (Operation *op, Entry *e, AttributeDescription *desc, struct berval *val, slap_access_t access, AccessControlState *state, slap_mask_t *maskp)
int slap_access_allowed (Operation *op, Entry *e, AttributeDescription *desc, struct berval *val, slap_access_t access, AccessControlState *state, slap_mask_t *maskp)
int fe_access_allowed (Operation *op, Entry *e, AttributeDescription *desc, struct berval *val, slap_access_t access, AccessControlState *state, slap_mask_t *maskp)
int access_allowed_mask (Operation *op, Entry *e, AttributeDescription *desc, struct berval *val, slap_access_t access, AccessControlState *state, slap_mask_t *maskp)
static int acl_mask_dn (Operation *op, Entry *e, struct berval *val, AccessControl *a, AclRegexMatches *matches, slap_dn_access *bdn, struct berval *opndn)
static int acl_mask_dnattr (Operation *op, Entry *e, struct berval *val, AccessControl *a, int count, AccessControlState *state, slap_mask_t *mask, slap_dn_access *bdn, struct berval *opndn)
int acl_check_modlist (Operation *op, Entry *e, Modifications *mlist)
int acl_get_part (struct berval *list, int ix, char sep, struct berval *bv)
static int acl_set_cb_gather (Operation *op, SlapReply *rs)
BerVarray acl_set_gather (SetCookie *cookie, struct berval *name, AttributeDescription *desc)
BerVarray acl_set_gather2 (SetCookie *cookie, struct berval *name, AttributeDescription *desc)
int acl_match_set (struct berval *subj, Operation *op, Entry *e, struct berval *default_set_attribute)
int acl_init (void)
int acl_string_expand (struct berval *bv, struct berval *pat, struct berval *dn_matches, struct berval *val_matches, AclRegexMatches *matches)

Variables

static struct berval = BER_BVC( "IP=" )
SLAP_SET_GATHER acl_set_gather
SLAP_SET_GATHER acl_set_gather2
static int(* acl_init_func [])(void)

Class Documentation

struct AclSetCookie

Definition at line 76 of file acl.c.

Collaboration diagram for AclSetCookie:
Class Members
SetCookie asc_cookie
Entry * asc_e
struct acl_set_gather_t

Definition at line 2105 of file acl.c.

Collaboration diagram for acl_set_gather_t:
Class Members
BerVarray bvals
SetCookie * cookie

Define Documentation

#define ACL_BUF_SIZE   1024 /* use most appropriate size */

Definition at line 40 of file acl.c.

Value:
do { \
              if( state && !state->as_vd_acl_present ) { \
			state->as_vd_acl_present = 1; \
			state->as_vd_acl = prev; \
			state->as_vd_acl_count = count - 1; \
                     ACL_PRIV_ASSIGN( state->as_vd_mask, *mask ); \
              } \
       } while( 0 )

Definition at line 721 of file acl.c.

#define asc_op   asc_cookie.set_op

Definition at line 78 of file acl.c.

#define MATCHES_DNMAXCOUNT (   m)    ( sizeof ( (m)->dn_data ) / sizeof( *(m)->dn_data ) )

Definition at line 123 of file acl.c.

#define MATCHES_MEMSET (   m)
Value:
do {                               \
       memset( (m)->dn_data, '\0', sizeof( (m)->dn_data ) );   \
       memset( (m)->val_data, '\0', sizeof( (m)->val_data ) ); \
       (m)->dn_count = MATCHES_DNMAXCOUNT( (m) );              \
       (m)->val_count = MATCHES_VALMAXCOUNT( (m) );            \
} while ( 0 /* CONSTCOND */ )

Definition at line 127 of file acl.c.

#define MATCHES_VALMAXCOUNT (   m)    ( sizeof ( (m)->val_data ) / sizeof( *(m)->val_data ) )

Definition at line 125 of file acl.c.


Typedef Documentation

typedef struct AclSetCookie AclSetCookie

Function Documentation

int access_allowed_mask ( Operation op,
Entry e,
AttributeDescription desc,
struct berval val,
slap_access_t  access,
AccessControlState state,
slap_mask_t maskp 
)

Definition at line 359 of file acl.c.

{
       int                         ret = 1;
       int                         be_null = 0;

#ifdef LDAP_DEBUG
       char                        accessmaskbuf[ACCESSMASK_MAXLEN];
#endif
       slap_mask_t                 mask;
       slap_access_t               access_level;
       const char                  *attr;

       assert( e != NULL );
       assert( desc != NULL );

       access_level = ACL_LEVEL( access );

       assert( access_level > ACL_NONE );

       ACL_INIT( mask );
       if ( maskp ) ACL_INVALIDATE( *maskp );

       attr = desc->ad_cname.bv_val;

       assert( attr != NULL );

       if ( op ) {
              if ( op->o_acl_priv != ACL_NONE ) {
                     access = op->o_acl_priv;

              } else if ( op->o_is_auth_check &&
                     ( access_level == ACL_SEARCH || access_level == ACL_READ ) )
              {
                     access = ACL_AUTH;

              } else if ( get_relax( op ) && access_level == ACL_WRITE &&
                     desc == slap_schema.si_ad_entry )
              {
                     access = ACL_MANAGE;
              }
       }

       if ( state != NULL ) {
              if ( state->as_desc == desc &&
                     state->as_access == access &&
                     state->as_result != -1 &&
                     !state->as_vd_acl_present )
                     {
                     Debug( LDAP_DEBUG_ACL,
                            "=> access_allowed: result was in cache (%s)\n",
                            attr, 0, 0 );
                            return state->as_result;
              } else {
                     Debug( LDAP_DEBUG_ACL,
                            "=> access_allowed: result not in cache (%s)\n",
                            attr, 0, 0 );
              }
       }

       Debug( LDAP_DEBUG_ACL,
              "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
              access2str( access ), e->e_dn, attr );

       if ( op == NULL ) {
              /* no-op call */
              goto done;
       }

       if ( op->o_bd == NULL ) {
              op->o_bd = LDAP_STAILQ_FIRST( &backendDB );
              be_null = 1;

              /* FIXME: experimental; use first backend rules
               * iff there is no global_acl (ITS#3100)
               */
              if ( frontendDB->be_acl != NULL ) {
                     op->o_bd = frontendDB;
              }
       }
       assert( op->o_bd != NULL );

       /* this is enforced in backend_add() */
       if ( op->o_bd->bd_info->bi_access_allowed ) {
              /* delegate to backend */
              ret = op->o_bd->bd_info->bi_access_allowed( op, e,
                            desc, val, access, state, &mask );

       } else {
              /* use default (but pass through frontend
               * for global ACL overlays) */
              ret = frontendDB->bd_info->bi_access_allowed( op, e,
                            desc, val, access, state, &mask );
       }

       if ( !ret ) {
              if ( ACL_IS_INVALID( mask ) ) {
                     Debug( LDAP_DEBUG_ACL,
                            "=> access_allowed: \"%s\" (%s) invalid!\n",
                            e->e_dn, attr, 0 );
                     ACL_INIT( mask );

              } else {
                     Debug( LDAP_DEBUG_ACL,
                            "=> access_allowed: no more rules\n", 0, 0, 0 );

                     goto done;
              }
       }

       Debug( LDAP_DEBUG_ACL,
              "=> access_allowed: %s access %s by %s\n",
              access2str( access ), ret ? "granted" : "denied",
              accessmask2str( mask, accessmaskbuf, 1 ) );

done:
       if ( state != NULL ) {
              state->as_access = access;
                     state->as_result = ret;
              state->as_desc = desc;
       }
       if ( be_null ) op->o_bd = NULL;
       if ( maskp ) ACL_PRIV_ASSIGN( *maskp, mask );
       return ret;
}

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int acl_check_modlist ( Operation op,
Entry e,
Modifications mlist 
)

Definition at line 1903 of file acl.c.

{
       struct berval *bv;
       AccessControlState state = ACL_STATE_INIT;
       Backend *be;
       int be_null = 0;
       int ret = 1; /* default is access allowed */

       be = op->o_bd;
       if ( be == NULL ) {
              be = LDAP_STAILQ_FIRST(&backendDB);
              be_null = 1;
              op->o_bd = be;
       }
       assert( be != NULL );

       /* If ADD attribute checking is not enabled, just allow it */
       if ( op->o_tag == LDAP_REQ_ADD && !SLAP_DBACL_ADD( be ))
              return 1;

       /* short circuit root database access */
       if ( be_isroot( op ) ) {
              Debug( LDAP_DEBUG_ACL,
                     "<= acl_access_allowed: granted to database root\n",
                  0, 0, 0 );
              goto done;
       }

       /* use backend default access if no backend acls */
       if( op->o_bd != NULL && op->o_bd->be_acl == NULL && frontendDB->be_acl == NULL ) {
              Debug( LDAP_DEBUG_ACL,
                     "=> access_allowed: backend default %s access %s to \"%s\"\n",
                     access2str( ACL_WRITE ),
                     op->o_bd->be_dfltaccess >= ACL_WRITE
                            ? "granted" : "denied",
                     op->o_dn.bv_val );
              ret = (op->o_bd->be_dfltaccess >= ACL_WRITE);
              goto done;
       }

       for ( ; mlist != NULL; mlist = mlist->sml_next ) {
              /*
               * Internal mods are ignored by ACL_WRITE checking
               */
              if ( mlist->sml_flags & SLAP_MOD_INTERNAL ) {
                     Debug( LDAP_DEBUG_ACL, "acl: internal mod %s:"
                            " modify access granted\n",
                            mlist->sml_desc->ad_cname.bv_val, 0, 0 );
                     continue;
              }

              /*
               * no-user-modification operational attributes are ignored
               * by ACL_WRITE checking as any found here are not provided
               * by the user
               */
              if ( is_at_no_user_mod( mlist->sml_desc->ad_type )
                            && ! ( mlist->sml_flags & SLAP_MOD_MANAGING ) )
              {
                     Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
                            " modify access granted\n",
                            mlist->sml_desc->ad_cname.bv_val, 0, 0 );
                     continue;
              }

              switch ( mlist->sml_op ) {
              case LDAP_MOD_REPLACE:
              case LDAP_MOD_INCREMENT:
                     /*
                      * We must check both permission to delete the whole
                      * attribute and permission to add the specific attributes.
                      * This prevents abuse from selfwriters.
                      */
                     if ( ! access_allowed( op, e,
                            mlist->sml_desc, NULL,
                            ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
                            &state ) )
                     {
                            ret = 0;
                            goto done;
                     }

                     if ( mlist->sml_values == NULL ) break;

                     /* fall thru to check value to add */

              case LDAP_MOD_ADD:
              case SLAP_MOD_ADD_IF_NOT_PRESENT:
                     assert( mlist->sml_values != NULL );

                     if ( mlist->sml_op == SLAP_MOD_ADD_IF_NOT_PRESENT
                            && attr_find( e->e_attrs, mlist->sml_desc ) )
                     {
                            break;
                     }

                     for ( bv = mlist->sml_nvalues
                                   ? mlist->sml_nvalues : mlist->sml_values;
                            bv->bv_val != NULL; bv++ )
                     {
                            if ( ! access_allowed( op, e,
                                   mlist->sml_desc, bv,
                                   ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WADD,
                                   &state ) )
                            {
                                   ret = 0;
                                   goto done;
                            }
                     }
                     break;

              case LDAP_MOD_DELETE:
              case SLAP_MOD_SOFTDEL:
                     if ( mlist->sml_values == NULL ) {
                            if ( ! access_allowed( op, e,
                                   mlist->sml_desc, NULL,
                                   ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
                                   &state ) )
                            {
                                   ret = 0;
                                   goto done;
                            }
                            break;
                     }
                     for ( bv = mlist->sml_nvalues
                                   ? mlist->sml_nvalues : mlist->sml_values;
                            bv->bv_val != NULL; bv++ )
                     {
                            if ( ! access_allowed( op, e,
                                   mlist->sml_desc, bv,
                                   ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
                                   &state ) )
                            {
                                   ret = 0;
                                   goto done;
                            }
                     }
                     break;

              case SLAP_MOD_SOFTADD:
                     /* allow adding attribute via modrdn thru */
                     break;

              default:
                     assert( 0 );
                     /* not reached */
                     ret = 0;
                     break;
              }
       }

done:
       if (be_null) op->o_bd = NULL;
       return( ret );
}

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int acl_get_part ( struct berval list,
int  ix,
char  sep,
struct berval bv 
)

Definition at line 2063 of file acl.c.

{
       int    len;
       char   *p;

       if ( bv ) {
              BER_BVZERO( bv );
       }
       len = list->bv_len;
       p = list->bv_val;
       while ( len >= 0 && --ix >= 0 ) {
              while ( --len >= 0 && *p++ != sep )
                     ;
       }
       while ( len >= 0 && *p == ' ' ) {
              len--;
              p++;
       }
       if ( len < 0 ) {
              return -1;
       }

       if ( !bv ) {
              return 0;
       }

       bv->bv_val = p;
       while ( --len >= 0 && *p != sep ) {
              bv->bv_len++;
              p++;
       }
       while ( bv->bv_len > 0 && *--p == ' ' ) {
              bv->bv_len--;
       }
       
       return bv->bv_len;
}

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int acl_init ( void  )

Definition at line 2504 of file acl.c.

{
       int    i, rc;

       for ( i = 0; acl_init_func[ i ] != NULL; i++ ) {
              rc = (*(acl_init_func[ i ]))();
              if ( rc != 0 ) {
                     return rc;
              }
       }

       return 0;
}

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static int acl_mask_dn ( Operation op,
Entry e,
struct berval val,
AccessControl a,
AclRegexMatches matches,
slap_dn_access bdn,
struct berval opndn 
) [static]

Definition at line 731 of file acl.c.

{
       /*
        * if access applies to the entry itself, and the
        * user is bound as somebody in the same namespace as
        * the entry, OR the given dn matches the dn pattern
        */
       /*
        * NOTE: styles "anonymous", "users" and "self" 
        * have been moved to enum slap_style_t, whose 
        * value is set in a_dn_style; however, the string
        * is maintained in a_dn_pat.
        */

       if ( bdn->a_style == ACL_STYLE_ANONYMOUS ) {
              if ( !BER_BVISEMPTY( opndn ) ) {
                     return 1;
              }

       } else if ( bdn->a_style == ACL_STYLE_USERS ) {
              if ( BER_BVISEMPTY( opndn ) ) {
                     return 1;
              }

       } else if ( bdn->a_style == ACL_STYLE_SELF ) {
              struct berval ndn, selfndn;
              int           level;

              if ( BER_BVISEMPTY( opndn ) || BER_BVISNULL( &e->e_nname ) ) {
                     return 1;
              }

              level = bdn->a_self_level;
              if ( level < 0 ) {
                     selfndn = *opndn;
                     ndn = e->e_nname;
                     level = -level;

              } else {
                     ndn = *opndn;
                     selfndn = e->e_nname;
              }

              for ( ; level > 0; level-- ) {
                     if ( BER_BVISEMPTY( &ndn ) ) {
                            break;
                     }
                     dnParent( &ndn, &ndn );
              }
                     
              if ( BER_BVISEMPTY( &ndn ) || !dn_match( &ndn, &selfndn ) )
              {
                     return 1;
              }

       } else if ( bdn->a_style == ACL_STYLE_REGEX ) {
              if ( !ber_bvccmp( &bdn->a_pat, '*' ) ) {
                     AclRegexMatches      tmp_matches,
                                   *tmp_matchesp = &tmp_matches;
                     int           rc = 0;
                     regmatch_t    *tmp_data;

                     MATCHES_MEMSET( &tmp_matches );
                     tmp_data = &tmp_matches.dn_data[0];

                     if ( a->acl_attrval_style == ACL_STYLE_REGEX )
                            tmp_matchesp = matches;
                     else switch ( a->acl_dn_style ) {
                     case ACL_STYLE_REGEX:
                            if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
                                   tmp_matchesp = matches; 
                                   break;
                            }
                     /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */

                     case ACL_STYLE_BASE:
                            tmp_data[0].rm_so = 0;
                            tmp_data[0].rm_eo = e->e_nname.bv_len;
                            tmp_matches.dn_count = 1;
                            break;

                     case ACL_STYLE_ONE:
                     case ACL_STYLE_SUBTREE:
                     case ACL_STYLE_CHILDREN:
                            tmp_data[0].rm_so = 0;
                            tmp_data[0].rm_eo = e->e_nname.bv_len;
                            tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
                            tmp_data[1].rm_eo = e->e_nname.bv_len;
                            tmp_matches.dn_count = 2;
                            break;

                     default:
                            /* error */
                            rc = 1;
                            break;
                     }

                     if ( rc ) {
                            return 1;
                     }

                     if ( !regex_matches( &bdn->a_pat, opndn->bv_val,
                            &e->e_nname, NULL, tmp_matchesp ) )
                     {
                            return 1;
                     }
              }

       } else {
              struct berval pat;
              ber_len_t     patlen, odnlen;
              int           got_match = 0;

              if ( e->e_dn == NULL )
                     return 1;

              if ( bdn->a_expand ) {
                     struct berval bv;
                     char          buf[ACL_BUF_SIZE];
                     
                     AclRegexMatches      tmp_matches,
                                   *tmp_matchesp = &tmp_matches;
                     int           rc = 0;
                     regmatch_t    *tmp_data;

                     MATCHES_MEMSET( &tmp_matches );
                     tmp_data = &tmp_matches.dn_data[0];

                     bv.bv_len = sizeof( buf ) - 1;
                     bv.bv_val = buf;

                     /* Expand value regex */
                     if ( a->acl_attrval_style == ACL_STYLE_REGEX )
                            tmp_matchesp = matches;
                     else switch ( a->acl_dn_style ) {
                     case ACL_STYLE_REGEX:
                            if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
                                   tmp_matchesp = matches;
                                   break;
                            }
                     /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */

                     case ACL_STYLE_BASE:
                            tmp_data[0].rm_so = 0;
                            tmp_data[0].rm_eo = e->e_nname.bv_len;
                            tmp_matches.dn_count = 1;
                            break;

                     case ACL_STYLE_ONE:
                     case ACL_STYLE_SUBTREE:
                     case ACL_STYLE_CHILDREN:
                            tmp_data[0].rm_so = 0;
                            tmp_data[0].rm_eo = e->e_nname.bv_len;
                            tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
                            tmp_data[1].rm_eo = e->e_nname.bv_len;
                            tmp_matches.dn_count = 2;
                            break;

                     default:
                            /* error */
                            rc = 1;
                            break;
                     }

                     if ( rc ) {
                            return 1;
                     }

                     if ( acl_string_expand( &bv, &bdn->a_pat, 
                                          &e->e_nname, 
                                          val, tmp_matchesp ) )
                     {
                            return 1;
                     }
                     
                     if ( dnNormalize(0, NULL, NULL, &bv,
                                   &pat, op->o_tmpmemctx )
                                   != LDAP_SUCCESS )
                     {
                            /* did not expand to a valid dn */
                            return 1;
                     }

              } else {
                     pat = bdn->a_pat;
              }

              patlen = pat.bv_len;
              odnlen = opndn->bv_len;
              if ( odnlen < patlen ) {
                     goto dn_match_cleanup;

              }

              if ( bdn->a_style == ACL_STYLE_BASE ) {
                     /* base dn -- entire object DN must match */
                     if ( odnlen != patlen ) {
                            goto dn_match_cleanup;
                     }

              } else if ( bdn->a_style == ACL_STYLE_ONE ) {
                     ber_len_t     rdnlen = 0;

                     if ( odnlen <= patlen ) {
                            goto dn_match_cleanup;
                     }

                     if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
                            goto dn_match_cleanup;
                     }

                     rdnlen = dn_rdnlen( NULL, opndn );
                     if ( rdnlen - ( odnlen - patlen - 1 ) != 0 ) {
                            goto dn_match_cleanup;
                     }

              } else if ( bdn->a_style == ACL_STYLE_SUBTREE ) {
                     if ( odnlen > patlen && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
                            goto dn_match_cleanup;
                     }

              } else if ( bdn->a_style == ACL_STYLE_CHILDREN ) {
                     if ( odnlen <= patlen ) {
                            goto dn_match_cleanup;
                     }

                     if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
                            goto dn_match_cleanup;
                     }

              } else if ( bdn->a_style == ACL_STYLE_LEVEL ) {
                     int           level = bdn->a_level;
                     struct berval ndn;

                     if ( odnlen <= patlen ) {
                            goto dn_match_cleanup;
                     }

                     if ( level > 0 && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) )
                     {
                            goto dn_match_cleanup;
                     }
                     
                     ndn = *opndn;
                     for ( ; level > 0; level-- ) {
                            if ( BER_BVISEMPTY( &ndn ) ) {
                                   goto dn_match_cleanup;
                            }
                            dnParent( &ndn, &ndn );
                            if ( ndn.bv_len < patlen ) {
                                   goto dn_match_cleanup;
                            }
                     }
                     
                     if ( ndn.bv_len != patlen ) {
                            goto dn_match_cleanup;
                     }
              }

              got_match = !strcmp( pat.bv_val, &opndn->bv_val[ odnlen - patlen ] );

dn_match_cleanup:;
              if ( pat.bv_val != bdn->a_pat.bv_val ) {
                     slap_sl_free( pat.bv_val, op->o_tmpmemctx );
              }

              if ( !got_match ) {
                     return 1;
              }
       }

       return 0;
}

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static int acl_mask_dnattr ( Operation op,
Entry e,
struct berval val,
AccessControl a,
int  count,
AccessControlState state,
slap_mask_t mask,
slap_dn_access bdn,
struct berval opndn 
) [static]

Definition at line 1013 of file acl.c.

{
       Attribute     *at;
       struct berval bv;
       int           rc, match = 0;
       const char    *text;
       const char    *attr = bdn->a_at->ad_cname.bv_val;

       assert( attr != NULL );

       if ( BER_BVISEMPTY( opndn ) ) {
              return 1;
       }

       Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n", attr, 0, 0 );
       bv = *opndn;

       /* see if asker is listed in dnattr */
       for ( at = attrs_find( e->e_attrs, bdn->a_at );
              at != NULL;
              at = attrs_find( at->a_next, bdn->a_at ) )
       {
              if ( attr_valfind( at,
                     SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
                            SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
                     &bv, NULL, op->o_tmpmemctx ) == 0 )
              {
                     /* found it */
                     match = 1;
                     break;
              }
       }

       if ( match ) {
              /* have a dnattr match. if this is a self clause then
               * the target must also match the op dn.
               */
              if ( bdn->a_self ) {
                     /* check if the target is an attribute. */
                     if ( val == NULL ) return 1;

                     /* target is attribute, check if the attribute value
                      * is the op dn.
                      */
                     rc = value_match( &match, bdn->a_at,
                            bdn->a_at->ad_type->sat_equality, 0,
                            val, &bv, &text );
                     /* on match error or no match, fail the ACL clause */
                     if ( rc != LDAP_SUCCESS || match != 0 )
                            return 1;
              }

       } else {
              /* no dnattr match, check if this is a self clause */
              if ( ! bdn->a_self )
                     return 1;

              /* this is a self clause, check if the target is an
               * attribute.
               */
              if ( val == NULL )
                     return 1;

              /* target is attribute, check if the attribute value
               * is the op dn.
               */
              rc = value_match( &match, bdn->a_at,
                     bdn->a_at->ad_type->sat_equality, 0,
                     val, &bv, &text );

              /* on match error or no match, fail the ACL clause */
              if ( rc != LDAP_SUCCESS || match != 0 )
                     return 1;
       }

       return 0;
}

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int acl_match_set ( struct berval subj,
Operation op,
Entry e,
struct berval default_set_attribute 
)

Definition at line 2364 of file acl.c.

{
       struct berval set = BER_BVNULL;
       int           rc = 0;
       AclSetCookie  cookie;

       if ( default_set_attribute == NULL ) {
              set = *subj;

       } else {
              struct berval        subjdn, ndn = BER_BVNULL;
              struct berval        setat;
              BerVarray            bvals = NULL;
              const char           *text;
              AttributeDescription *desc = NULL;

              /* format of string is "entry/setAttrName" */
              if ( acl_get_part( subj, 0, '/', &subjdn ) < 0 ) {
                     return 0;
              }

              if ( acl_get_part( subj, 1, '/', &setat ) < 0 ) {
                     setat = *default_set_attribute;
              }

              /*
               * NOTE: dnNormalize honors the ber_len field
               * as the length of the dn to be normalized
               */
              if ( slap_bv2ad( &setat, &desc, &text ) == LDAP_SUCCESS ) {
                     if ( dnNormalize( 0, NULL, NULL, &subjdn, &ndn, op->o_tmpmemctx ) == LDAP_SUCCESS )
                     {
                            backend_attribute( op, e, &ndn, desc, &bvals, ACL_NONE );
                            if ( bvals != NULL && !BER_BVISNULL( &bvals[0] ) ) {
                                   int    i;

                                   set = bvals[0];
                                   BER_BVZERO( &bvals[0] );
                                   for ( i = 1; !BER_BVISNULL( &bvals[i] ); i++ )
                                          /* count */ ;
                                   bvals[0].bv_val = bvals[i-1].bv_val;
                                   BER_BVZERO( &bvals[i-1] );
                            }
                            ber_bvarray_free_x( bvals, op->o_tmpmemctx );
                            slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
                     }
              }
       }

       if ( !BER_BVISNULL( &set ) ) {
              cookie.asc_op = op;
              cookie.asc_e = e;
              rc = ( slap_set_filter(
                     acl_set_gather,
                     (SetCookie *)&cookie, &set,
                     &op->o_ndn, &e->e_nname, NULL ) > 0 );
              if ( set.bv_val != subj->bv_val ) {
                     slap_sl_free( set.bv_val, op->o_tmpmemctx );
              }
       }

       return(rc);
}

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static int acl_set_cb_gather ( Operation op,
SlapReply rs 
) [static]

Definition at line 2111 of file acl.c.

{
       acl_set_gather_t     *p = (acl_set_gather_t *)op->o_callback->sc_private;
       
       if ( rs->sr_type == REP_SEARCH ) {
              BerValue      bvals[ 2 ];
              BerVarray     bvalsp = NULL;
              int           j;

              for ( j = 0; !BER_BVISNULL( &rs->sr_attrs[ j ].an_name ); j++ ) {
                     AttributeDescription *desc = rs->sr_attrs[ j ].an_desc;

                     if ( desc == NULL ) {
                            continue;
                     }
                     
                     if ( desc == slap_schema.si_ad_entryDN ) {
                            bvalsp = bvals;
                            bvals[ 0 ] = rs->sr_entry->e_nname;
                            BER_BVZERO( &bvals[ 1 ] );

                     } else {
                            Attribute     *a;

                            a = attr_find( rs->sr_entry->e_attrs, desc );
                            if ( a != NULL ) {
                                   bvalsp = a->a_nvals;
                            }
                     }

                     if ( bvalsp ) {
                            p->bvals = slap_set_join( p->cookie, p->bvals,
                                          ( '|' | SLAP_SET_RREF ), bvalsp );
                     }
              }

       } else {
              switch ( rs->sr_type ) {
              case REP_SEARCHREF:
              case REP_INTERMEDIATE:
                     /* ignore */
                     break;

              default:
                     assert( rs->sr_type == REP_RESULT );
                     break;
              }
       }

       return 0;
}

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BerVarray acl_set_gather ( SetCookie cookie,
struct berval name,
AttributeDescription desc 
)

Definition at line 2164 of file acl.c.

{
       AclSetCookie         *cp = (AclSetCookie *)cookie;
       int                  rc = 0;
       LDAPURLDesc          *ludp = NULL;
       Operation            op2 = { 0 };
       SlapReply            rs = {REP_RESULT};
       AttributeName        anlist[ 2 ], *anlistp = NULL;
       int                  nattrs = 0;
       slap_callback        cb = { NULL, acl_set_cb_gather, NULL, NULL };
       acl_set_gather_t     p = { 0 };

       /* this routine needs to return the bervals instead of
        * plain strings, since syntax is not known.  It should
        * also return the syntax or some "comparison cookie".
        */
       if ( strncasecmp( name->bv_val, "ldap:///", STRLENOF( "ldap:///" ) ) != 0 ) {
              return acl_set_gather2( cookie, name, desc );
       }

       rc = ldap_url_parse( name->bv_val, &ludp );
       if ( rc != LDAP_URL_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     "%s acl_set_gather: unable to parse URL=\"%s\"\n",
                     cp->asc_op->o_log_prefix, name->bv_val, 0 );

              rc = LDAP_PROTOCOL_ERROR;
              goto url_done;
       }
       
       if ( ( ludp->lud_host && ludp->lud_host[0] ) || ludp->lud_exts )
       {
              /* host part must be empty */
              /* extensions parts must be empty */
              Debug( LDAP_DEBUG_TRACE,
                     "%s acl_set_gather: host/exts must be absent in URL=\"%s\"\n",
                     cp->asc_op->o_log_prefix, name->bv_val, 0 );

              rc = LDAP_PROTOCOL_ERROR;
              goto url_done;
       }

       /* Grab the searchbase and see if an appropriate database can be found */
       ber_str2bv( ludp->lud_dn, 0, 0, &op2.o_req_dn );
       rc = dnNormalize( 0, NULL, NULL, &op2.o_req_dn,
                     &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
       BER_BVZERO( &op2.o_req_dn );
       if ( rc != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     "%s acl_set_gather: DN=\"%s\" normalize failed\n",
                     cp->asc_op->o_log_prefix, ludp->lud_dn, 0 );

              goto url_done;
       }

       op2.o_bd = select_backend( &op2.o_req_ndn, 1 );
       if ( ( op2.o_bd == NULL ) || ( op2.o_bd->be_search == NULL ) ) {
              Debug( LDAP_DEBUG_TRACE,
                     "%s acl_set_gather: no database could be selected for DN=\"%s\"\n",
                     cp->asc_op->o_log_prefix, op2.o_req_ndn.bv_val, 0 );

              rc = LDAP_NO_SUCH_OBJECT;
              goto url_done;
       }

       /* Grab the filter */
       if ( ludp->lud_filter ) {
              ber_str2bv_x( ludp->lud_filter, 0, 0, &op2.ors_filterstr,
                            cp->asc_op->o_tmpmemctx );
              op2.ors_filter = str2filter_x( cp->asc_op, op2.ors_filterstr.bv_val );
              if ( op2.ors_filter == NULL ) {
                     Debug( LDAP_DEBUG_TRACE,
                            "%s acl_set_gather: unable to parse filter=\"%s\"\n",
                            cp->asc_op->o_log_prefix, op2.ors_filterstr.bv_val, 0 );

                     rc = LDAP_PROTOCOL_ERROR;
                     goto url_done;
              }
              
       } else {
              op2.ors_filterstr = *slap_filterstr_objectClass_pres;
              op2.ors_filter = (Filter *)slap_filter_objectClass_pres;
       }


       /* Grab the scope */
       op2.ors_scope = ludp->lud_scope;

       /* Grap the attributes */
       if ( ludp->lud_attrs ) {
              int i;

              for ( ; ludp->lud_attrs[ nattrs ]; nattrs++ )
                     ;

              anlistp = slap_sl_calloc( sizeof( AttributeName ), nattrs + 2,
                            cp->asc_op->o_tmpmemctx );

              for ( i = 0, nattrs = 0; ludp->lud_attrs[ i ]; i++ ) {
                     struct berval        name;
                     AttributeDescription *desc = NULL;
                     const char           *text = NULL;

                     ber_str2bv( ludp->lud_attrs[ i ], 0, 0, &name );
                     rc = slap_bv2ad( &name, &desc, &text );
                     if ( rc == LDAP_SUCCESS ) {
                            anlistp[ nattrs ].an_name = name;
                            anlistp[ nattrs ].an_desc = desc;
                            nattrs++;
                     }
              }

       } else {
              anlistp = anlist;
       }

       anlistp[ nattrs ].an_name = desc->ad_cname;
       anlistp[ nattrs ].an_desc = desc;

       BER_BVZERO( &anlistp[ nattrs + 1 ].an_name );
       
       p.cookie = cookie;
       
       op2.o_hdr = cp->asc_op->o_hdr;
       op2.o_tag = LDAP_REQ_SEARCH;
       op2.o_ndn = op2.o_bd->be_rootndn;
       op2.o_callback = &cb;
       slap_op_time( &op2.o_time, &op2.o_tincr );
       op2.o_do_not_cache = 1;
       op2.o_is_auth_check = 0;
       ber_dupbv_x( &op2.o_req_dn, &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
       op2.ors_slimit = SLAP_NO_LIMIT;
       op2.ors_tlimit = SLAP_NO_LIMIT;
       op2.ors_attrs = anlistp;
       op2.ors_attrsonly = 0;
       op2.o_private = cp->asc_op->o_private;
       op2.o_extra = cp->asc_op->o_extra;

       cb.sc_private = &p;

       rc = op2.o_bd->be_search( &op2, &rs );
       if ( rc != 0 ) {
              goto url_done;
       }

url_done:;
       if ( op2.ors_filter && op2.ors_filter != slap_filter_objectClass_pres ) {
              filter_free_x( cp->asc_op, op2.ors_filter, 1 );
       }
       if ( !BER_BVISNULL( &op2.o_req_ndn ) ) {
              slap_sl_free( op2.o_req_ndn.bv_val, cp->asc_op->o_tmpmemctx );
       }
       if ( !BER_BVISNULL( &op2.o_req_dn ) ) {
              slap_sl_free( op2.o_req_dn.bv_val, cp->asc_op->o_tmpmemctx );
       }
       if ( ludp ) {
              ldap_free_urldesc( ludp );
       }
       if ( anlistp && anlistp != anlist ) {
              slap_sl_free( anlistp, cp->asc_op->o_tmpmemctx );
       }

       return p.bvals;
}

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BerVarray acl_set_gather2 ( SetCookie cookie,
struct berval name,
AttributeDescription desc 
)

Definition at line 2330 of file acl.c.

{
       AclSetCookie  *cp = (AclSetCookie *)cookie;
       BerVarray     bvals = NULL;
       struct berval ndn;
       int           rc = 0;

       /* this routine needs to return the bervals instead of
        * plain strings, since syntax is not known.  It should
        * also return the syntax or some "comparison cookie".
        */
       rc = dnNormalize( 0, NULL, NULL, name, &ndn, cp->asc_op->o_tmpmemctx );
       if ( rc == LDAP_SUCCESS ) {
              if ( desc == slap_schema.si_ad_entryDN ) {
                     bvals = (BerVarray)slap_sl_malloc( sizeof( BerValue ) * 2,
                                   cp->asc_op->o_tmpmemctx );
                     bvals[ 0 ] = ndn;
                     BER_BVZERO( &bvals[ 1 ] );
                     BER_BVZERO( &ndn );

              } else {
                     backend_attribute( cp->asc_op,
                            cp->asc_e, &ndn, desc, &bvals, ACL_NONE );
              }

              if ( !BER_BVISNULL( &ndn ) ) {
                     slap_sl_free( ndn.bv_val, cp->asc_op->o_tmpmemctx );
              }
       }

       return bvals;
}

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int acl_string_expand ( struct berval bv,
struct berval pat,
struct berval dn_matches,
struct berval val_matches,
AclRegexMatches matches 
)

Definition at line 2519 of file acl.c.

{
       ber_len_t     size;
       char   *sp;
       char   *dp;
       int    flag;
       enum { DN_FLAG, VAL_FLAG } tflag;

       size = 0;
       bv->bv_val[0] = '\0';
       bv->bv_len--; /* leave space for lone $ */

       flag = 0;
       tflag = DN_FLAG;
       for ( dp = bv->bv_val, sp = pat->bv_val; size < bv->bv_len &&
              sp < pat->bv_val + pat->bv_len ; sp++ )
       {
              /* did we previously see a $ */
              if ( flag ) {
                     if ( flag == 1 && *sp == '$' ) {
                            *dp++ = '$';
                            size++;
                            flag = 0;
                            tflag = DN_FLAG;

                     } else if ( flag == 2 && *sp == 'v' /*'}'*/) {
                            tflag = VAL_FLAG;

                     } else if ( flag == 2 && *sp == 'd' /*'}'*/) {
                            tflag = DN_FLAG;

                     } else if ( flag == 1 && *sp == '{' /*'}'*/) {
                            flag = 2;

                     } else if ( *sp >= '0' && *sp <= '9' ) {
                            int    nm;
                            regmatch_t *m;
                            char *data;
                            int    n;
                            int    i;
                            int    l;

                            n = *sp - '0';

                            if ( flag == 2 ) {
                                   for ( sp++; *sp != '\0' && *sp != /*'{'*/ '}'; sp++ ) {
                                          if ( *sp >= '0' && *sp <= '9' ) {
                                                 n = 10*n + ( *sp - '0' );
                                          }
                                   }

                                   if ( *sp != /*'{'*/ '}' ) {
                                          /* FIXME: error */
                                          return 1;
                                   }
                            }

                            switch (tflag) {
                            case DN_FLAG:
                                   nm = matches->dn_count;
                                   m = matches->dn_data;
                                   data = dn_matches ? dn_matches->bv_val : NULL;
                                   break;
                            case VAL_FLAG:
                                   nm = matches->val_count;
                                   m = matches->val_data;
                                   data = val_matches ? val_matches->bv_val : NULL;
                                   break;
                            default:
                                   assert( 0 );
                            }
                            if ( n >= nm ) {
                                   /* FIXME: error */
                                   return 1;
                            }
                            if ( data == NULL ) {
                                   /* FIXME: error */
                                   return 1;
                            }
                            
                            *dp = '\0';
                            i = m[n].rm_so;
                            l = m[n].rm_eo; 
                                   
                            for ( ; size < bv->bv_len && i < l; size++, i++ ) {
                                   *dp++ = data[i];
                            }
                            *dp = '\0';

                            flag = 0;
                            tflag = DN_FLAG;
                     }
              } else {
                     if (*sp == '$') {
                            flag = 1;
                     } else {
                            *dp++ = *sp;
                            size++;
                     }
              }
       }

       if ( flag ) {
              /* must have ended with a single $ */
              *dp++ = '$';
              size++;
       }

       *dp = '\0';
       bv->bv_len = size;

       Debug( LDAP_DEBUG_ACL, "=> acl_string_expand: pattern:  %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
       Debug( LDAP_DEBUG_ACL, "=> acl_string_expand: expanded: %s\n", bv->bv_val, 0, 0 );

       return 0;
}

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int fe_access_allowed ( Operation op,
Entry e,
AttributeDescription desc,
struct berval val,
slap_access_t  access,
AccessControlState state,
slap_mask_t maskp 
)

Definition at line 325 of file acl.c.

{
       BackendDB            *be_orig;
       int                  rc;

       /*
        * NOTE: control gets here if FIXME
        * if an appropriate backend cannot be selected for the operation,
        * we assume that the frontend should handle this
        * FIXME: should select_backend() take care of this,
        * and return frontendDB instead of NULL?  maybe for some value
        * of the flags?
        */
       be_orig = op->o_bd;

       if ( op->o_bd == NULL ) {
              op->o_bd = select_backend( &op->o_req_ndn, 0 );
              if ( op->o_bd == NULL )
                     op->o_bd = frontendDB;
       }
       rc = slap_access_allowed( op, e, desc, val, access, state, maskp );
       op->o_bd = be_orig;

       return rc;
}

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static int regex_matches ( struct berval pat,
char *  str,
struct berval dn_matches,
struct berval val_matches,
AclRegexMatches matches 
) [static]

Definition at line 2642 of file acl.c.

{
       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 );
}

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int slap_access_allowed ( Operation op,
Entry e,
AttributeDescription desc,
struct berval val,
slap_access_t  access,
AccessControlState state,
slap_mask_t maskp 
)

Definition at line 135 of file acl.c.

{
       int                         ret = 1;
       int                         count;
       AccessControl               *a, *prev;

#ifdef LDAP_DEBUG
       char                        accessmaskbuf[ACCESSMASK_MAXLEN];
#endif
       slap_mask_t                 mask;
       slap_control_t                     control;
       slap_access_t               access_level;
       const char                  *attr;
       AclRegexMatches                    matches;
       AccessControlState          acl_state = ACL_STATE_INIT;
       static AccessControlState   state_init = ACL_STATE_INIT;

       assert( op != NULL );
       assert( e != NULL );
       assert( desc != NULL );
       assert( maskp != NULL );

       access_level = ACL_LEVEL( access );
       attr = desc->ad_cname.bv_val;

       assert( attr != NULL );

       ACL_INIT( mask );

       /* grant database root access */
       if ( be_isroot( op ) ) {
              Debug( LDAP_DEBUG_ACL, "<= root access granted\n", 0, 0, 0 );
              mask = ACL_LVL_MANAGE;
              goto done;
       }

       /*
        * no-user-modification operational attributes are ignored
        * by ACL_WRITE checking as any found here are not provided
        * by the user
        *
        * NOTE: but they are not ignored for ACL_MANAGE, because
        * if we get here it means a non-root user is trying to 
        * manage data, so we need to check its privileges.
        */
       if ( access_level == ACL_WRITE
              && is_at_no_user_mod( desc->ad_type )
              && desc != slap_schema.si_ad_entry
              && desc != slap_schema.si_ad_children )
       {
              Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
                     " %s access granted\n",
                     attr, 0, 0 );
              goto done;
       }

       /* use backend default access if no backend acls */
       if ( op->o_bd->be_acl == NULL && frontendDB->be_acl == NULL ) {
              int    i;

              Debug( LDAP_DEBUG_ACL,
                     "=> slap_access_allowed: backend default %s "
                     "access %s to \"%s\"\n",
                     access2str( access ),
                     op->o_bd->be_dfltaccess >= access_level ? "granted" : "denied",
                     op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
              ret = op->o_bd->be_dfltaccess >= access_level;

              mask = ACL_PRIV_LEVEL;
              for ( i = ACL_NONE; i <= op->o_bd->be_dfltaccess; i++ ) {
                     ACL_PRIV_SET( mask, ACL_ACCESS2PRIV( i ) );
              }

              goto done;
       }

       ret = 0;
       control = ACL_BREAK;

       if ( state == NULL )
              state = &acl_state;
       if ( state->as_desc == desc &&
              state->as_access == access &&
              state->as_vd_acl_present )
       {
              a = state->as_vd_acl;
              count = state->as_vd_acl_count;
              if ( state->as_fe_done )
                     state->as_fe_done--;
              ACL_PRIV_ASSIGN( mask, state->as_vd_mask );
       } else {
              *state = state_init;

              a = NULL;
              count = 0;
              ACL_PRIV_ASSIGN( mask, *maskp );
       }

       MATCHES_MEMSET( &matches );
       prev = a;

       while ( ( a = slap_acl_get( a, &count, op, e, desc, val,
              &matches, &mask, state ) ) != NULL )
       {
              int i; 
              int dnmaxcount = MATCHES_DNMAXCOUNT( &matches );
              int valmaxcount = MATCHES_VALMAXCOUNT( &matches );
              regmatch_t *dn_data = matches.dn_data;
              regmatch_t *val_data = matches.val_data;

              /* DN matches */
              for ( i = 0; i < dnmaxcount && dn_data[i].rm_eo > 0; i++ ) {
                     char *data = e->e_ndn;

                     Debug( LDAP_DEBUG_ACL, "=> match[dn%d]: %d %d ", i,
                            (int)dn_data[i].rm_so, 
                            (int)dn_data[i].rm_eo );
                     if ( dn_data[i].rm_so <= dn_data[0].rm_eo ) {
                            int n;
                            for ( n = dn_data[i].rm_so; 
                                  n < dn_data[i].rm_eo; n++ ) {
                                   Debug( LDAP_DEBUG_ACL, "%c", 
                                          data[n], 0, 0 );
                            }
                     }
                     Debug( LDAP_DEBUG_ACL, "\n", 0, 0, 0 );
              }

              /* val matches */
              for ( i = 0; i < valmaxcount && val_data[i].rm_eo > 0; i++ ) {
                     char *data = val->bv_val;

                     Debug( LDAP_DEBUG_ACL, "=> match[val%d]: %d %d ", i,
                            (int)val_data[i].rm_so, 
                            (int)val_data[i].rm_eo );
                     if ( val_data[i].rm_so <= val_data[0].rm_eo ) {
                            int n;
                            for ( n = val_data[i].rm_so; 
                                  n < val_data[i].rm_eo; n++ ) {
                                   Debug( LDAP_DEBUG_ACL, "%c", 
                                          data[n], 0, 0 );
                            }
                     }
                     Debug( LDAP_DEBUG_ACL, "\n", 0, 0, 0 );
              }

              control = slap_acl_mask( a, prev, &mask, op,
                     e, desc, val, &matches, count, state, access );

              if ( control != ACL_BREAK ) {
                     break;
              }

              MATCHES_MEMSET( &matches );
              prev = a;
       }

       if ( ACL_IS_INVALID( mask ) ) {
              Debug( LDAP_DEBUG_ACL,
                     "=> slap_access_allowed: \"%s\" (%s) invalid!\n",
                     e->e_dn, attr, 0 );
              ACL_PRIV_ASSIGN( mask, *maskp );

       } else if ( control == ACL_BREAK ) {
              Debug( LDAP_DEBUG_ACL,
                     "=> slap_access_allowed: no more rules\n", 0, 0, 0 );

              goto done;
       }

       ret = ACL_GRANT( mask, access );

       Debug( LDAP_DEBUG_ACL,
              "=> slap_access_allowed: %s access %s by %s\n",
              access2str( access ), ret ? "granted" : "denied",
              accessmask2str( mask, accessmaskbuf, 1 ) );

done:
       ACL_PRIV_ASSIGN( *maskp, mask );
       return ret;
}

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int slap_access_always_allowed ( Operation op,
Entry e,
AttributeDescription desc,
struct berval val,
slap_access_t  access,
AccessControlState state,
slap_mask_t maskp 
)

Definition at line 106 of file acl.c.

{
       assert( maskp != NULL );

       /* assign all */
       ACL_LVL_ASSIGN_MANAGE( *maskp );

       return 1;
}

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static AccessControl * slap_acl_get ( AccessControl ac,
int count,
Operation op,
Entry e,
AttributeDescription desc,
struct berval val,
AclRegexMatches matches,
slap_mask_t mask,
AccessControlState state 
) [static]

Definition at line 499 of file acl.c.

{
       const char *attr;
       ber_len_t dnlen;
       AccessControl *prev;

       assert( e != NULL );
       assert( count != NULL );
       assert( desc != NULL );
       assert( state != NULL );

       attr = desc->ad_cname.bv_val;

       assert( attr != NULL );

       if( a == NULL ) {
              if( op->o_bd == NULL || op->o_bd->be_acl == NULL ) {
                     a = frontendDB->be_acl;
              } else {
                     a = op->o_bd->be_acl;
              }
              prev = NULL;

              assert( a != NULL );
              if ( a == frontendDB->be_acl )
                     state->as_fe_done = 1;
       } else {
              prev = a;
              a = a->acl_next;
       }

       dnlen = e->e_nname.bv_len;

 retry:
       for ( ; a != NULL; prev = a, a = a->acl_next ) {
              (*count) ++;

              if ( a != frontendDB->be_acl && state->as_fe_done )
                     state->as_fe_done++;

              if ( a->acl_dn_pat.bv_len || ( a->acl_dn_style != ACL_STYLE_REGEX )) {
                     if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
                            Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n", 
                                   *count, a->acl_dn_pat.bv_val, (int) a->acl_dn_re.re_nsub );
                            if ( regexec ( &a->acl_dn_re, 
                                          e->e_ndn, 
                                          matches->dn_count, 
                                          matches->dn_data, 0 ) )
                                   continue;

                     } else {
                            ber_len_t patlen;

                            Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n", 
                                   *count, a->acl_dn_pat.bv_val, 0 );
                            patlen = a->acl_dn_pat.bv_len;
                            if ( dnlen < patlen )
                                   continue;

                            if ( a->acl_dn_style == ACL_STYLE_BASE ) {
                                   /* base dn -- entire object DN must match */
                                   if ( dnlen != patlen )
                                          continue;

                            } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
                                   ber_len_t     rdnlen = 0;
                                   ber_len_t     sep = 0;

                                   if ( dnlen <= patlen )
                                          continue;

                                   if ( patlen > 0 ) {
                                          if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
                                                 continue;
                                          sep = 1;
                                   }

                                   rdnlen = dn_rdnlen( NULL, &e->e_nname );
                                   if ( rdnlen + patlen + sep != dnlen )
                                          continue;

                            } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
                                   if ( dnlen > patlen && !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
                                          continue;

                            } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
                                   if ( dnlen <= patlen )
                                          continue;
                                   if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
                                          continue;
                            }

                            if ( strcmp( a->acl_dn_pat.bv_val, e->e_ndn + dnlen - patlen ) != 0 )
                                   continue;
                     }

                     Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
                            *count, 0, 0 );
              }

              if ( a->acl_attrs && !ad_inlist( desc, a->acl_attrs ) ) {
                     matches->dn_data[0].rm_so = -1;
                     matches->dn_data[0].rm_eo = -1;
                     matches->val_data[0].rm_so = -1;
                     matches->val_data[0].rm_eo = -1;
                     continue;
              }

              /* Is this ACL only for a specific value? */
              if ( a->acl_attrval.bv_len ) {
                     if ( val == NULL ) {
                            continue;
                     }

                     if ( !state->as_vd_acl_present ) {
                            state->as_vd_acl_present = 1;
                            state->as_vd_acl = prev;
                            state->as_vd_acl_count = *count - 1;
                            ACL_PRIV_ASSIGN ( state->as_vd_mask, *mask );
                     }

                     if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
                            Debug( LDAP_DEBUG_ACL,
                                   "acl_get: valpat %s\n",
                                   a->acl_attrval.bv_val, 0, 0 );
                            if ( regexec ( &a->acl_attrval_re, 
                                              val->bv_val, 
                                              matches->val_count, 
                                              matches->val_data, 0 ) )
                            {
                                   continue;
                            }

                     } else {
                            int match = 0;
                            const char *text;
                            Debug( LDAP_DEBUG_ACL,
                                   "acl_get: val %s\n",
                                   a->acl_attrval.bv_val, 0, 0 );
       
                            if ( a->acl_attrs[0].an_desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName ) {
                                   if (value_match( &match, desc,
                                          a->acl_attrval_mr, 0,
                                          val, &a->acl_attrval, &text ) != LDAP_SUCCESS ||
                                                 match )
                                          continue;
                                   
                            } else {
                                   ber_len_t     patlen, vdnlen;
       
                                   patlen = a->acl_attrval.bv_len;
                                   vdnlen = val->bv_len;
       
                                   if ( vdnlen < patlen )
                                          continue;
       
                                   if ( a->acl_attrval_style == ACL_STYLE_BASE ) {
                                          if ( vdnlen > patlen )
                                                 continue;
       
                                   } else if ( a->acl_attrval_style == ACL_STYLE_ONE ) {
                                          ber_len_t     rdnlen = 0;
       
                                          if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
                                                 continue;
       
                                          rdnlen = dn_rdnlen( NULL, val );
                                          if ( rdnlen + patlen + 1 != vdnlen )
                                                 continue;
       
                                   } else if ( a->acl_attrval_style == ACL_STYLE_SUBTREE ) {
                                          if ( vdnlen > patlen && !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
                                                 continue;
       
                                   } else if ( a->acl_attrval_style == ACL_STYLE_CHILDREN ) {
                                          if ( vdnlen <= patlen )
                                                 continue;
       
                                          if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
                                                 continue;
                                   }
       
                                   if ( strcmp( a->acl_attrval.bv_val, val->bv_val + vdnlen - patlen ) )
                                          continue;
                            }
                     }
              }

              if ( a->acl_filter != NULL ) {
                     ber_int_t rc = test_filter( NULL, e, a->acl_filter );
                     if ( rc != LDAP_COMPARE_TRUE ) {
                            continue;
                     }
              }

              Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] attr %s\n",
                     *count, attr, 0);
              return a;
       }

       if ( !state->as_fe_done ) {
              state->as_fe_done = 1;
              a = frontendDB->be_acl;
              goto retry;
       }

       Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
       return( NULL );
}

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static slap_control_t slap_acl_mask ( AccessControl ac,
AccessControl prev,
slap_mask_t mask,
Operation op,
Entry e,
AttributeDescription desc,
struct berval val,
AclRegexMatches matches,
int  count,
AccessControlState state,
slap_access_t  access 
) [static]

Definition at line 1111 of file acl.c.

{
       int           i;
       Access        *b;
#ifdef LDAP_DEBUG
       char          accessmaskbuf[ACCESSMASK_MAXLEN];
#endif /* DEBUG */
       const char    *attr;
#ifdef SLAP_DYNACL
       slap_mask_t   a2pmask = ACL_ACCESS2PRIV( access );
#endif /* SLAP_DYNACL */

       assert( a != NULL );
       assert( mask != NULL );
       assert( desc != NULL );

       attr = desc->ad_cname.bv_val;

       assert( attr != NULL );

       Debug( LDAP_DEBUG_ACL,
              "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
              e->e_dn, attr, 0 );

       Debug( LDAP_DEBUG_ACL,
              "=> acl_mask: to %s by \"%s\", (%s) \n",
              val ? "value" : "all values",
              op->o_ndn.bv_val ?  op->o_ndn.bv_val : "",
              accessmask2str( *mask, accessmaskbuf, 1 ) );


       b = a->acl_access;
       i = 1;

       for ( ; b != NULL; b = b->a_next, i++ ) {
              slap_mask_t oldmask, modmask;

              ACL_INVALIDATE( modmask );

              /* check for the "self" modifier in the <access> field */
              if ( b->a_dn.a_self ) {
                     const char *dummy;
                     int rc, match = 0;

                     ACL_RECORD_VALUE_STATE;

                     /* must have DN syntax */
                     if ( desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName &&
                            !is_at_syntax( desc->ad_type, SLAPD_NAMEUID_SYNTAX )) continue;

                     /* check if the target is an attribute. */
                     if ( val == NULL ) continue;

                     /* a DN must be present */
                     if ( BER_BVISEMPTY( &op->o_ndn ) ) {
                            continue;
                     }

                     /* target is attribute, check if the attribute value
                      * is the op dn.
                      */
                     rc = value_match( &match, desc,
                            desc->ad_type->sat_equality, 0,
                            val, &op->o_ndn, &dummy );
                     /* on match error or no match, fail the ACL clause */
                     if ( rc != LDAP_SUCCESS || match != 0 )
                            continue;
              }

              /* AND <who> clauses */
              if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
                     Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
                            b->a_dn_pat.bv_val, 0, 0);
                     /*
                      * if access applies to the entry itself, and the
                      * user is bound as somebody in the same namespace as
                      * the entry, OR the given dn matches the dn pattern
                      */
                     /*
                      * NOTE: styles "anonymous", "users" and "self" 
                      * have been moved to enum slap_style_t, whose 
                      * value is set in a_dn_style; however, the string
                      * is maintained in a_dn_pat.
                      */

                     if ( acl_mask_dn( op, e, val, a, matches,
                            &b->a_dn, &op->o_ndn ) )
                     {
                            continue;
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
                     struct berval ndn;

                     Debug( LDAP_DEBUG_ACL, "<= check a_realdn_pat: %s\n",
                            b->a_realdn_pat.bv_val, 0, 0);
                     /*
                      * if access applies to the entry itself, and the
                      * user is bound as somebody in the same namespace as
                      * the entry, OR the given dn matches the dn pattern
                      */
                     /*
                      * NOTE: styles "anonymous", "users" and "self" 
                      * have been moved to enum slap_style_t, whose 
                      * value is set in a_dn_style; however, the string
                      * is maintained in a_dn_pat.
                      */

                     if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
                     {
                            ndn = op->o_conn->c_ndn;
                     } else {
                            ndn = op->o_ndn;
                     }

                     if ( acl_mask_dn( op, e, val, a, matches,
                            &b->a_realdn, &ndn ) )
                     {
                            continue;
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
                     if ( ! op->o_conn->c_listener ) {
                            continue;
                     }
                     Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
                            b->a_sockurl_pat.bv_val, 0, 0 );

                     if ( !ber_bvccmp( &b->a_sockurl_pat, '*' ) ) {
                            if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
                                   if ( !regex_matches( &b->a_sockurl_pat, op->o_conn->c_listener_url.bv_val,
                                                 &e->e_nname, val, matches ) ) 
                                   {
                                          continue;
                                   }

                            } else if ( b->a_sockurl_style == ACL_STYLE_EXPAND ) {
                                   struct berval bv;
                                   char buf[ACL_BUF_SIZE];

                                   bv.bv_len = sizeof( buf ) - 1;
                                   bv.bv_val = buf;
                                   if ( acl_string_expand( &bv, &b->a_sockurl_pat, &e->e_nname, val, matches ) )
                                   {
                                          continue;
                                   }

                                   if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_listener_url ) != 0 )
                                   {
                                          continue;
                                   }

                            } else {
                                   if ( ber_bvstrcasecmp( &b->a_sockurl_pat, &op->o_conn->c_listener_url ) != 0 )
                                   {
                                          continue;
                                   }
                            }
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
                     if ( !op->o_conn->c_peer_domain.bv_val ) {
                            continue;
                     }
                     Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
                            b->a_domain_pat.bv_val, 0, 0 );
                     if ( !ber_bvccmp( &b->a_domain_pat, '*' ) ) {
                            if ( b->a_domain_style == ACL_STYLE_REGEX) {
                                   if ( !regex_matches( &b->a_domain_pat, op->o_conn->c_peer_domain.bv_val,
                                                 &e->e_nname, val, matches ) ) 
                                   {
                                          continue;
                                   }
                            } else {
                                   char buf[ACL_BUF_SIZE];

                                   struct berval        cmp = op->o_conn->c_peer_domain;
                                   struct berval        pat = b->a_domain_pat;

                                   if ( b->a_domain_expand ) {
                                          struct berval bv;

                                          bv.bv_len = sizeof(buf) - 1;
                                          bv.bv_val = buf;

                                          if ( acl_string_expand(&bv, &b->a_domain_pat, &e->e_nname, val, matches) )
                                          {
                                                 continue;
                                          }
                                          pat = bv;
                                   }

                                   if ( b->a_domain_style == ACL_STYLE_SUBTREE ) {
                                          int offset = cmp.bv_len - pat.bv_len;
                                          if ( offset < 0 ) {
                                                 continue;
                                          }

                                          if ( offset == 1 || ( offset > 1 && cmp.bv_val[ offset - 1 ] != '.' ) ) {
                                                 continue;
                                          }

                                          /* trim the domain */
                                          cmp.bv_val = &cmp.bv_val[ offset ];
                                          cmp.bv_len -= offset;
                                   }
                                   
                                   if ( ber_bvstrcasecmp( &pat, &cmp ) != 0 ) {
                                          continue;
                                   }
                            }
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
                     if ( !op->o_conn->c_peer_name.bv_val ) {
                            continue;
                     }
                     Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
                            b->a_peername_pat.bv_val, 0, 0 );
                     if ( !ber_bvccmp( &b->a_peername_pat, '*' ) ) {
                            if ( b->a_peername_style == ACL_STYLE_REGEX ) {
                                   if ( !regex_matches( &b->a_peername_pat, op->o_conn->c_peer_name.bv_val,
                                                 &e->e_nname, val, matches ) ) 
                                   {
                                          continue;
                                   }

                            } else {
                                   /* try exact match */
                                   if ( b->a_peername_style == ACL_STYLE_BASE ) {
                                          if ( ber_bvstrcasecmp( &b->a_peername_pat, &op->o_conn->c_peer_name ) != 0 ) {
                                                 continue;
                                          }

                                   } else if ( b->a_peername_style == ACL_STYLE_EXPAND ) {
                                          struct berval bv;
                                          char buf[ACL_BUF_SIZE];

                                          bv.bv_len = sizeof( buf ) - 1;
                                          bv.bv_val = buf;
                                          if ( acl_string_expand( &bv, &b->a_peername_pat, &e->e_nname, val, matches ) )
                                          {
                                                 continue;
                                          }

                                          if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_peer_name ) != 0 ) {
                                                 continue;
                                          }

                                   /* extract IP and try exact match */
                                   } else if ( b->a_peername_style == ACL_STYLE_IP ) {
                                          char          *port;
                                          char          buf[STRLENOF("255.255.255.255") + 1];
                                          struct berval ip;
                                          unsigned long addr;
                                          int           port_number = -1;
                                          
                                          if ( strncasecmp( op->o_conn->c_peer_name.bv_val, 
                                                               acl_bv_ip_eq.bv_val,
                                                               acl_bv_ip_eq.bv_len ) != 0 ) 
                                                 continue;

                                          ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ip_eq.bv_len;
                                          ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ip_eq.bv_len;

                                          port = strrchr( ip.bv_val, ':' );
                                          if ( port ) {
                                                 ip.bv_len = port - ip.bv_val;
                                                 ++port;
                                                 if ( lutil_atoi( &port_number, port ) != 0 )
                                                        continue;
                                          }
                                          
                                          /* the port check can be anticipated here */
                                          if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
                                                 continue;
                                          
                                          /* address longer than expected? */
                                          if ( ip.bv_len >= sizeof(buf) )
                                                 continue;

                                          AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
                                          buf[ ip.bv_len ] = '\0';

                                          addr = inet_addr( buf );

                                          /* unable to convert? */
                                          if ( addr == (unsigned long)(-1) )
                                                 continue;

                                          if ( (addr & b->a_peername_mask) != b->a_peername_addr )
                                                 continue;

#ifdef LDAP_PF_INET6
                                   /* extract IPv6 and try exact match */
                                   } else if ( b->a_peername_style == ACL_STYLE_IPV6 ) {
                                          char          *port;
                                          char          buf[STRLENOF("FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF") + 1];
                                          struct berval ip;
                                          struct in6_addr      addr;
                                          int           port_number = -1;
                                          
                                          if ( strncasecmp( op->o_conn->c_peer_name.bv_val, 
                                                               acl_bv_ipv6_eq.bv_val,
                                                               acl_bv_ipv6_eq.bv_len ) != 0 ) 
                                                 continue;

                                          ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ipv6_eq.bv_len;
                                          ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ipv6_eq.bv_len;

                                          port = strrchr( ip.bv_val, ']' );
                                          if ( port ) {
                                                 ip.bv_len = port - ip.bv_val;
                                                 ++port;
                                                 if ( port[0] == ':' && lutil_atoi( &port_number, ++port ) != 0 )
                                                        continue;
                                          }
                                          
                                          /* the port check can be anticipated here */
                                          if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
                                                 continue;
                                          
                                          /* address longer than expected? */
                                          if ( ip.bv_len >= sizeof(buf) )
                                                 continue;

                                          AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
                                          buf[ ip.bv_len ] = '\0';

                                          if ( inet_pton( AF_INET6, buf, &addr ) != 1 )
                                                 continue;

                                          /* check mask */
                                          if ( !slap_addr6_mask( &addr, &b->a_peername_mask6, &b->a_peername_addr6 ) )
                                                 continue;
#endif /* LDAP_PF_INET6 */

#ifdef LDAP_PF_LOCAL
                                   /* extract path and try exact match */
                                   } else if ( b->a_peername_style == ACL_STYLE_PATH ) {
                                          struct berval path;
                                          
                                          if ( strncmp( op->o_conn->c_peer_name.bv_val,
                                                               acl_bv_path_eq.bv_val,
                                                               acl_bv_path_eq.bv_len ) != 0 )
                                                 continue;

                                          path.bv_val = op->o_conn->c_peer_name.bv_val
                                                 + acl_bv_path_eq.bv_len;
                                          path.bv_len = op->o_conn->c_peer_name.bv_len
                                                 - acl_bv_path_eq.bv_len;

                                          if ( ber_bvcmp( &b->a_peername_pat, &path ) != 0 )
                                                 continue;

#endif /* LDAP_PF_LOCAL */

                                   /* exact match (very unlikely...) */
                                   } else if ( ber_bvcmp( &op->o_conn->c_peer_name, &b->a_peername_pat ) != 0 ) {
                                                 continue;
                                   }
                            }
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
                     if ( BER_BVISNULL( &op->o_conn->c_sock_name ) ) {
                            continue;
                     }
                     Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
                            b->a_sockname_pat.bv_val, 0, 0 );
                     if ( !ber_bvccmp( &b->a_sockname_pat, '*' ) ) {
                            if ( b->a_sockname_style == ACL_STYLE_REGEX) {
                                   if ( !regex_matches( &b->a_sockname_pat, op->o_conn->c_sock_name.bv_val,
                                                 &e->e_nname, val, matches ) ) 
                                   {
                                          continue;
                                   }

                            } else if ( b->a_sockname_style == ACL_STYLE_EXPAND ) {
                                   struct berval bv;
                                   char buf[ACL_BUF_SIZE];

                                   bv.bv_len = sizeof( buf ) - 1;
                                   bv.bv_val = buf;
                                   if ( acl_string_expand( &bv, &b->a_sockname_pat, &e->e_nname, val, matches ) )
                                   {
                                          continue;
                                   }

                                   if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_sock_name ) != 0 ) {
                                          continue;
                                   }

                            } else {
                                   if ( ber_bvstrcasecmp( &b->a_sockname_pat, &op->o_conn->c_sock_name ) != 0 ) {
                                          continue;
                                   }
                            }
                     }
              }

              if ( b->a_dn_at != NULL ) {
                     if ( acl_mask_dnattr( op, e, val, a,
                                   count, state, mask,
                                   &b->a_dn, &op->o_ndn ) )
                     {
                            continue;
                     }
              }

              if ( b->a_realdn_at != NULL ) {
                     struct berval ndn;

                     if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
                     {
                            ndn = op->o_conn->c_ndn;
                     } else {
                            ndn = op->o_ndn;
                     }

                     if ( acl_mask_dnattr( op, e, val, a,
                                   count, state, mask,
                                   &b->a_realdn, &ndn ) )
                     {
                            continue;
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
                     struct berval bv;
                     struct berval ndn = BER_BVNULL;
                     int rc;

                     if ( op->o_ndn.bv_len == 0 ) {
                            continue;
                     }

                     Debug( LDAP_DEBUG_ACL, "<= check a_group_pat: %s\n",
                            b->a_group_pat.bv_val, 0, 0 );

                     /* b->a_group is an unexpanded entry name, expanded it should be an 
                      * entry with objectclass group* and we test to see if odn is one of
                      * the values in the attribute group
                      */
                     /* see if asker is listed in dnattr */
                     if ( b->a_group_style == ACL_STYLE_EXPAND ) {
                            char          buf[ACL_BUF_SIZE];
                            AclRegexMatches      tmp_matches,
                                          *tmp_matchesp = &tmp_matches;
                            regmatch_t    *tmp_data;

                            MATCHES_MEMSET( &tmp_matches );
                            tmp_data = &tmp_matches.dn_data[0];

                            bv.bv_len = sizeof(buf) - 1;
                            bv.bv_val = buf;

                            rc = 0;

                            if ( a->acl_attrval_style == ACL_STYLE_REGEX )
                                   tmp_matchesp = matches;
                            else switch ( a->acl_dn_style ) {
                            case ACL_STYLE_REGEX:
                                   if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
                                          tmp_matchesp = matches;
                                          break;
                                   }

                            /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
                            case ACL_STYLE_BASE:
                                   tmp_data[0].rm_so = 0;
                                   tmp_data[0].rm_eo = e->e_nname.bv_len;
                                   tmp_matches.dn_count = 1;
                                   break;

                            case ACL_STYLE_ONE:
                            case ACL_STYLE_SUBTREE:
                            case ACL_STYLE_CHILDREN:
                                   tmp_data[0].rm_so = 0;
                                   tmp_data[0].rm_eo = e->e_nname.bv_len;

                                   tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
                                   tmp_data[1].rm_eo = e->e_nname.bv_len;
                                   tmp_matches.dn_count = 2;
                                   break;

                            default:
                                   /* error */
                                   rc = 1;
                                   break;
                            }

                            if ( rc ) {
                                   continue;
                            }
                            
                            if ( acl_string_expand( &bv, &b->a_group_pat,
                                          &e->e_nname, val,
                                          tmp_matchesp ) )
                            {
                                   continue;
                            }

                            if ( dnNormalize( 0, NULL, NULL, &bv, &ndn,
                                          op->o_tmpmemctx ) != LDAP_SUCCESS )
                            {
                                   /* did not expand to a valid dn */
                                   continue;
                            }

                            bv = ndn;

                     } else {
                            bv = b->a_group_pat;
                     }

                     rc = backend_group( op, e, &bv, &op->o_ndn,
                            b->a_group_oc, b->a_group_at );

                     if ( ndn.bv_val ) {
                            slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
                     }

                     if ( rc != 0 ) {
                            continue;
                     }
              }

              if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
                     struct berval bv;
                     char          buf[ACL_BUF_SIZE];

                     Debug( LDAP_DEBUG_ACL, "<= check a_set_pat: %s\n",
                            b->a_set_pat.bv_val, 0, 0 );

                     if ( b->a_set_style == ACL_STYLE_EXPAND ) {
                            AclRegexMatches      tmp_matches,
                                          *tmp_matchesp = &tmp_matches;
                            int           rc = 0;
                            regmatch_t    *tmp_data;

                            MATCHES_MEMSET( &tmp_matches );
                            tmp_data = &tmp_matches.dn_data[0];

                            bv.bv_len = sizeof( buf ) - 1;
                            bv.bv_val = buf;

                            rc = 0;

                            if ( a->acl_attrval_style == ACL_STYLE_REGEX )
                                   tmp_matchesp = matches;
                            else switch ( a->acl_dn_style ) {
                            case ACL_STYLE_REGEX:
                                   if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
                                          tmp_matchesp = matches;
                                          break;
                                   }

                            /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
                            case ACL_STYLE_BASE:
                                   tmp_data[0].rm_so = 0;
                                   tmp_data[0].rm_eo = e->e_nname.bv_len;
                                   tmp_matches.dn_count = 1;
                                   break;

                            case ACL_STYLE_ONE:
                            case ACL_STYLE_SUBTREE:
                            case ACL_STYLE_CHILDREN:
                                   tmp_data[0].rm_so = 0;
                                   tmp_data[0].rm_eo = e->e_nname.bv_len;
                                   tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
                                   tmp_data[1].rm_eo = e->e_nname.bv_len; tmp_matches.dn_count = 2;
                                   break;

                            default:
                                   /* error */
                                   rc = 1;
                                   break;
                            }

                            if ( rc ) {
                                   continue;
                            }
                            
                            if ( acl_string_expand( &bv, &b->a_set_pat,
                                          &e->e_nname, val,
                                          tmp_matchesp ) )
                            {
                                   continue;
                            }

                     } else {
                            bv = b->a_set_pat;
                     }
                     
                     if ( acl_match_set( &bv, op, e, NULL ) == 0 ) {
                            continue;
                     }
              }

              if ( b->a_authz.sai_ssf ) {
                     Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
                            b->a_authz.sai_ssf, op->o_ssf, 0 );
                     if ( b->a_authz.sai_ssf >  op->o_ssf ) {
                            continue;
                     }
              }

              if ( b->a_authz.sai_transport_ssf ) {
                     Debug( LDAP_DEBUG_ACL,
                            "<= check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
                            b->a_authz.sai_transport_ssf, op->o_transport_ssf, 0 );
                     if ( b->a_authz.sai_transport_ssf >  op->o_transport_ssf ) {
                            continue;
                     }
              }

              if ( b->a_authz.sai_tls_ssf ) {
                     Debug( LDAP_DEBUG_ACL,
                            "<= check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
                            b->a_authz.sai_tls_ssf, op->o_tls_ssf, 0 );
                     if ( b->a_authz.sai_tls_ssf >  op->o_tls_ssf ) {
                            continue;
                     }
              }

              if ( b->a_authz.sai_sasl_ssf ) {
                     Debug( LDAP_DEBUG_ACL,
                            "<= check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
                            b->a_authz.sai_sasl_ssf, op->o_sasl_ssf, 0 );
                     if ( b->a_authz.sai_sasl_ssf >     op->o_sasl_ssf ) {
                            continue;
                     }
              }

#ifdef SLAP_DYNACL
              if ( b->a_dynacl ) {
                     slap_dynacl_t *da;
                     slap_access_t tgrant, tdeny;

                     Debug( LDAP_DEBUG_ACL, "<= check a_dynacl\n",
                            0, 0, 0 );

                     /* this case works different from the others above.
                      * since dynamic ACL's themselves give permissions, we need
                      * to first check b->a_access_mask, the ACL's access level.
                      */
                     /* first check if the right being requested
                      * is allowed by the ACL clause.
                      */
                     if ( ! ACL_PRIV_ISSET( b->a_access_mask, a2pmask ) ) {
                            continue;
                     }

                     /* start out with nothing granted, nothing denied */
                     ACL_INVALIDATE(tgrant);
                     ACL_INVALIDATE(tdeny);

                     for ( da = b->a_dynacl; da; da = da->da_next ) {
                            slap_access_t grant,
                                          deny;

                            ACL_INVALIDATE(grant);
                            ACL_INVALIDATE(deny);

                            Debug( LDAP_DEBUG_ACL, "    <= check a_dynacl: %s\n",
                                   da->da_name, 0, 0 );

                            /*
                             * XXXmanu Only DN matches are supplied 
                             * sending attribute values matches require
                             * an API update
                             */
                            (void)da->da_mask( da->da_private, op, e, desc,
                                   val, matches->dn_count, matches->dn_data, 
                                   &grant, &deny ); 

                            tgrant |= grant;
                            tdeny |= deny;
                     }

                     /* remove anything that the ACL clause does not allow */
                     tgrant &= b->a_access_mask & ACL_PRIV_MASK;
                     tdeny &= ACL_PRIV_MASK;

                     /* see if we have anything to contribute */
                     if( ACL_IS_INVALID(tgrant) && ACL_IS_INVALID(tdeny) ) { 
                            continue;
                     }

                     /* this could be improved by changing slap_acl_mask so that it can deal with
                      * by clauses that return grant/deny pairs.  Right now, it does either
                      * additive or subtractive rights, but not both at the same time.  So,
                      * we need to combine the grant/deny pair into a single rights mask in
                      * a smart way:       if either grant or deny is "empty", then we use the
                      * opposite as is, otherwise we remove any denied rights from the grant
                      * rights mask and construct an additive mask.
                      */
                     if (ACL_IS_INVALID(tdeny)) {
                            modmask = tgrant | ACL_PRIV_ADDITIVE;

                     } else if (ACL_IS_INVALID(tgrant)) {
                            modmask = tdeny | ACL_PRIV_SUBSTRACTIVE;

                     } else {
                            modmask = (tgrant & ~tdeny) | ACL_PRIV_ADDITIVE;
                     }

              } else
#endif /* SLAP_DYNACL */
              {
                     modmask = b->a_access_mask;
              }

              Debug( LDAP_DEBUG_ACL,
                     "<= acl_mask: [%d] applying %s (%s)\n",
                     i, accessmask2str( modmask, accessmaskbuf, 1 ), 
                     b->a_type == ACL_CONTINUE
                            ? "continue"
                            : b->a_type == ACL_BREAK
                                   ? "break"
                                   : "stop" );
              /* save old mask */
              oldmask = *mask;

              if( ACL_IS_ADDITIVE(modmask) ) {
                     /* add privs */
                     ACL_PRIV_SET( *mask, modmask );

                     /* cleanup */
                     ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );

              } else if( ACL_IS_SUBTRACTIVE(modmask) ) {
                     /* substract privs */
                     ACL_PRIV_CLR( *mask, modmask );

                     /* cleanup */
                     ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );

              } else {
                     /* assign privs */
                     *mask = modmask;
              }

              Debug( LDAP_DEBUG_ACL,
                     "<= acl_mask: [%d] mask: %s\n",
                     i, accessmask2str(*mask, accessmaskbuf, 1), 0 );

              if( b->a_type == ACL_CONTINUE ) {
                     continue;

              } else if ( b->a_type == ACL_BREAK ) {
                     return ACL_BREAK;

              } else {
                     return ACL_STOP;
              }
       }

       /* implicit "by * none" clause */
       ACL_INIT(*mask);

       Debug( LDAP_DEBUG_ACL,
              "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
              accessmask2str(*mask, accessmaskbuf, 1), 0, 0 );
       return ACL_STOP;
}

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Variable Documentation

int(* acl_init_func[])(void) [static]
Initial value:
 {





 

       NULL
}

Definition at line 2492 of file acl.c.

Definition at line 83 of file acl.c.

Definition at line 84 of file acl.c.

struct berval = BER_BVC( "IP=" ) [static]

Definition at line 42 of file acl.c.