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           OpenLDAP LDAP (libldap, -lldap)


           #include <ldap.h>
           char *ldap_get_dn( LDAP *ld, LDAPMessage *entry )
           int ldap_str2dn( const char *str, LDAPDN *dn, unsigned flags )
           void ldap_dnfree( LDAPDN dn )
           int ldap_dn2str( LDAPDN dn, char **str, unsigned flags )
           char **ldap_explode_dn( const char *dn, int notypes )
           char **ldap_explode_rdn( const char *rdn, int notypes )
           char *ldap_dn2ufn( const char * dn )
           char *ldap_dn2dcedn( const char * dn )
           char *ldap_dcedn2dn( const char * dn )
           char *ldap_dn2ad_canonical( const char * dn )


           These routines allow LDAP entry names (Distinguished Names, or DNs)  to
           be  obtained, parsed, converted to a user-friendly form, and tested.  A
           DN has the form described in RFC  4414  "Lightweight  Directory  Access
           Protocol (LDAP): String Representation of Distinguished Names".
           The   ldap_get_dn()   routine   takes   an   entry   as   returned   by
           ldap_first_entry(3) or ldap_next_entry(3) and returns  a  copy  of  the
           entry's  DN.   Space for the DN will be obtained dynamically and should
           be freed by the caller using ldap_memfree(3).
           ldap_str2dn() parses a string representation of  a  distinguished  name
           contained  in  str  into  its  components,  which  are  stored in dn as
           ldap_ava structures, arranged in LDAPAVA, LDAPRDN,  and  LDAPDN  terms.
           Space  for  dn  will be obtained dynamically and should be freed by the
           caller using ldap_dnfree(3).  The LDAPDN is defined as:
           typedef struct ldap_ava {
               struct berval la_attr;
               struct berval la_value;
               unsigned la_flags;
           } LDAPAVA;
           typedef LDAPAVA** LDAPRDN;
           typedef LDAPRDN* LDAPDN;
           1779 and DCE, respectively).  The format can be ORed to the flags
           The latter is a shortcut for all the previous limitations.
           LDAP_DN_P_NO_SPACES  does not allow extra spaces in the dn; the default
           is to silently eliminate spaces around AVA separators ('='), RDN compo-
           nent  separators ('+' for LDAPv3/LDAPv2 or ',' for DCE) and RDN separa-
           tors (',' LDAPv3/LDAPv2 or '/' for DCE).
           LDAP_DN_P_NO_SPACE_AFTER_RDN does not allow a single  space  after  RDN
           ldap_dn2str()  performs the inverse operation, yielding in str a string
           representation  of  dn.   It  allows  the  same  values  for  flags  as
           ldap_str2dn(), plus
           for user-friendly naming (RFC 1781) and AD canonical.
           The   following   routines   are  viewed  as  deprecated  in  favor  of
           ldap_str2dn() and ldap_dn2str().  They are provided to  support  legacy
           The  ldap_explode_dn()  routine takes a DN as returned by ldap_get_dn()
           and breaks it up into its component parts.  Each part  is  known  as  a
           Relative Distinguished Name, or RDN.  ldap_explode_dn() returns a NULL-
           terminated array, each component of which contains an RDN from the  DN.
           The  notypes  parameter  is used to request that only the RDN values be
           returned, not their types.  For example, the DN  "cn=Bob,  c=US"  would
           return  as  either { "cn=Bob", "c=US", NULL } or { "Bob", "US", NULL },
           depending on whether notypes was 0 or 1, respectively.  Assertion  val-
           ues  in RDN strings may included escaped characters.  The result can be
           freed by calling ldap_value_free(3).
           Similarly, the ldap_explode_rdn() routine takes an RDN as  returned  by
           ldap_explode_dn(dn,0)  and breaks it up into its "type=value" component
           parts (or just "value", if the notypes parameter  is  set).   Note  the
           value   is   not  unescaped.   The  result  can  be  freed  by  calling
           ldap_dn2ufn() is used to turn a DN as returned by ldap_get_dn(3) into a
           more  user-friendly form, stripping off all type names.  See "Using the
           Directory to Achieve User Friendly Naming" (RFC 1781) for more  details
           on  the  UFN  format.  Due to the ambiguous nature of the format, it is
           generally only used for  display  purposes.   The  space  for  the  UFN


           If  an error occurs in ldap_get_dn(), NULL is returned and the ld_errno
           field  in  the  ld  parameter  is  set  to  indicate  the  error.   See
           ldap_error(3)    for   a   description   of   possible   error   codes.
           ldap_explode_dn(), ldap_explode_rdn(), ldap_dn2ufn(),  ldap_dn2dcedn(),
           ldap_dcedn2dn(),  and  ldap_dn2ad_canonical()  will  return  NULL  with
           errno(3) set appropriately in case of trouble.


           These routines dynamically allocate memory that the caller must free.


           ldap(3),    ldap_error(3),    ldap_first_entry(3),     ldap_memfree(3),


           OpenLDAP  Software  is developed and maintained by The OpenLDAP Project
           <>.  OpenLDAP Software is derived from  Univer-
           sity of Michigan LDAP 3.3 Release.

    OpenLDAP 2.4.40 2014/09/20 LDAP_GET_DN(3)


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