diff options
Diffstat (limited to 'doc/man/man3/ldap_get_dn.3')
| -rw-r--r-- | doc/man/man3/ldap_get_dn.3 | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/doc/man/man3/ldap_get_dn.3 b/doc/man/man3/ldap_get_dn.3 new file mode 100644 index 0000000..0b39a43 --- /dev/null +++ b/doc/man/man3/ldap_get_dn.3 @@ -0,0 +1,246 @@ +.TH LDAP_GET_DN 3 "RELEASEDATE" "OpenLDAP LDVERSION" +.\" $OpenLDAP$ +.\" Copyright 1998-2018 The OpenLDAP Foundation All Rights Reserved. +.\" Copying restrictions apply. See COPYRIGHT/LICENSE. +.SH NAME +ldap_get_dn, ldap_explode_dn, ldap_explode_rdn, ldap_dn2ufn \- LDAP DN handling routines +.SH LIBRARY +OpenLDAP LDAP (libldap, \-lldap) +.SH SYNOPSIS +.nf +.ft B +#include <ldap.h> +.LP +.ft B +char *ldap_get_dn( LDAP *ld, LDAPMessage *entry ) +.LP +.ft B +int ldap_str2dn( const char *str, LDAPDN *dn, unsigned flags ) +.LP +.ft B +void ldap_dnfree( LDAPDN dn ) +.LP +.ft B +int ldap_dn2str( LDAPDN dn, char **str, unsigned flags ) +.LP +.ft B +char **ldap_explode_dn( const char *dn, int notypes ) +.LP +.ft B +char **ldap_explode_rdn( const char *rdn, int notypes ) +.LP +.ft B +char *ldap_dn2ufn( const char * dn ) +.LP +.ft B +char *ldap_dn2dcedn( const char * dn ) +.LP +.ft B +char *ldap_dcedn2dn( const char * dn ) +.LP +.ft B +char *ldap_dn2ad_canonical( const char * dn ) +.SH DESCRIPTION +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". +.LP +The +.B ldap_get_dn() +routine takes an \fIentry\fP as returned by +.BR ldap_first_entry (3) +or +.BR 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 +.BR ldap_memfree (3). +.LP +.B ldap_str2dn() +parses a string representation of a distinguished name contained in +.B str +into its components, +which are stored in +.B dn +as +.B ldap_ava +structures, arranged in +.B LDAPAVA, +.B LDAPRDN, +and +.B LDAPDN +terms. Space for +.B dn +will be obtained dynamically and should be freed by the caller using +.BR ldap_dnfree (3). +The +.B LDAPDN +is defined as: +.nf +.ft B + +typedef struct ldap_ava { + struct berval la_attr; + struct berval la_value; + unsigned la_flags; +} LDAPAVA; + +typedef LDAPAVA** LDAPRDN; +typedef LDAPRDN* LDAPDN; + +.ft +.fi +The attribute types and the attribute values are not normalized. +The +.B la_flags +can be either +.B LDAP_AVA_STRING +or +.B LDAP_AVA_BINARY, +the latter meaning that the value is BER/DER encoded and thus must +be represented as, quoting from RFC 4514, " ... an +octothorpe character ('#' ASCII 35) followed by the hexadecimal +representation of each of the bytes of the BER encoding of the X.500 +AttributeValue." +The +.B flags +parameter to +.B ldap_str2dn() +can be +.LP +.nf + LDAP_DN_FORMAT_LDAPV3 + LDAP_DN_FORMAT_LDAPV2 + LDAP_DN_FORMAT_DCE + +.fi +which defines what DN syntax is expected (according to RFC 4514, +RFC 1779 and DCE, respectively). +The format can be \fIOR\fPed to the flags +.LP +.nf + LDAP_DN_P_NO_SPACES + LDAP_DN_P_NO_SPACE_AFTER_RDN + ... + LDAP_DN_PEDANTIC + +.fi +The latter is a shortcut for all the previous limitations. +.LP +.B LDAP_DN_P_NO_SPACES +does not allow extra spaces in the dn; the default is to silently +eliminate spaces around AVA separators ('='), RDN component separators +('+' for LDAPv3/LDAPv2 or ',' for DCE) and RDN separators +(',' LDAPv3/LDAPv2 or '/' for DCE). +.LP +.B LDAP_DN_P_NO_SPACE_AFTER_RDN +does not allow a single space after RDN separators. +.LP +.B ldap_dn2str() +performs the inverse operation, yielding in +.B str +a string representation of +.B dn. +It allows the same values for +.B flags +as +.B ldap_str2dn(), +plus +.LP +.nf + LDAP_DN_FORMAT_UFN + LDAP_DN_FORMAT_AD_CANONICAL + +.fi +for user-friendly naming (RFC 1781) and AD canonical. +.LP +The following routines are viewed as deprecated in favor of +.B ldap_str2dn() +and +.BR ldap_dn2str(). +They are provided to support legacy applications. +.LP +The +.B ldap_explode_dn() +routine takes a DN as returned by +.B ldap_get_dn() +and breaks it up into its component parts. Each part is known as a +Relative Distinguished Name, or RDN. +.B ldap_explode_dn() +returns a +NULL-terminated array, each component of which contains an RDN from the +DN. The \fInotypes\fP 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 values in RDN strings may included escaped characters. +The result can be freed by calling +.BR ldap_value_free (3). +.LP +Similarly, the +.B ldap_explode_rdn() +routine takes an RDN as returned by +.B ldap_explode_dn(dn,0) +and breaks it up into its "type=value" component parts (or just "value", +if the \fInotypes\fP parameter is set). Note the value is not +unescaped. The result can be freed by calling +.BR ldap_value_free (3). +.LP +.B ldap_dn2ufn() +is used to turn a DN as returned by +.BR 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 returned is obtained dynamically and the user +is responsible for freeing it via a call to +.BR ldap_memfree (3). +.LP +.B ldap_dn2dcedn() +is used to turn a DN as returned by +.BR ldap_get_dn (3) +into a DCE-style DN, e.g. a string with most-significant to least +significant rdns separated by slashes ('/'); rdn components +are separated by commas (','). +Only printable chars (e.g. LDAPv2 printable string) are allowed, +at least in this implementation. +.B ldap_dcedn2dn() +performs the opposite operation. +.B ldap_dn2ad_canonical() +turns a DN into a AD canonical name, which is basically a DCE dn +with attribute types omitted. +The trailing domain, if present, is turned in a DNS-like domain. +The space for the returned value is obtained dynamically and the user +is responsible for freeing it via a call to +.BR ldap_memfree (3). +.SH ERRORS +If an error occurs in +.BR ldap_get_dn() , +NULL is returned and the +.B ld_errno +field in the \fIld\fP parameter is set to indicate the error. See +.BR ldap_error (3) +for a description of possible error codes. +.BR ldap_explode_dn() , +.BR ldap_explode_rdn() , +.B ldap_dn2ufn(), +.B ldap_dn2dcedn(), +.B ldap_dcedn2dn(), +and +.B ldap_dn2ad_canonical() +will return NULL with +.BR errno (3) +set appropriately in case of trouble. +.SH NOTES +These routines dynamically allocate memory that the caller must free. +.SH SEE ALSO +.BR ldap (3), +.BR ldap_error (3), +.BR ldap_first_entry (3), +.BR ldap_memfree (3), +.BR ldap_value_free (3) +.SH ACKNOWLEDGEMENTS +.so ../Project |