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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:11:40 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 11:11:40 +0000 |
commit | 7731832751ab9f3c6ddeb66f186d3d7fa1934a6d (patch) | |
tree | e91015872543a59be2aad26c2fea02e41b57005d /doc/man/man3/ldap_open.3 | |
parent | Initial commit. (diff) | |
download | openldap-upstream/2.4.57+dfsg.tar.xz openldap-upstream/2.4.57+dfsg.zip |
Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'doc/man/man3/ldap_open.3')
-rw-r--r-- | doc/man/man3/ldap_open.3 | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/doc/man/man3/ldap_open.3 b/doc/man/man3/ldap_open.3 new file mode 100644 index 0000000..081e625 --- /dev/null +++ b/doc/man/man3/ldap_open.3 @@ -0,0 +1,225 @@ +.TH LDAP_OPEN 3 "RELEASEDATE" "OpenLDAP LDVERSION" +.\" $OpenLDAP$ +.\" Copyright 1998-2021 The OpenLDAP Foundation All Rights Reserved. +.\" Copying restrictions apply. See COPYRIGHT/LICENSE. +.SH NAME +ldap_init, ldap_initialize, ldap_open \- Initialize the LDAP library and open a connection to an LDAP server +.SH LIBRARY +OpenLDAP LDAP (libldap, \-lldap) +.SH SYNOPSIS +.nf +.ft B +#include <ldap.h> +.LP +.ft B +LDAP *ldap_open(host, port) +.ft +char *host; +int port; +.LP +.ft B +LDAP *ldap_init(host, port) +.ft +char *host; +int port; +.LP +.ft B +int ldap_initialize(ldp, uri) +.ft +LDAP **ldp; +char *uri; +.LP +.ft B +int ldap_set_urllist_proc(ld, proc, params) +.ft +LDAP *ld; +LDAP_URLLIST_PROC *proc; +void *params; +.LP +.ft B +int (LDAP_URLLIST_PROC)(ld, urllist, url, params); +.ft +LDAP *ld; +LDAPURLDesc **urllist; +LDAPURLDesc **url; +void *params; +.LP +.ft B +#include <openldap.h> +.LP +.ft B +int ldap_init_fd(fd, proto, uri, ldp) +.ft +ber_socket_t fd; +int proto; +char *uri; +LDAP **ldp; +.SH DESCRIPTION +.LP +.B ldap_open() +opens a connection to an LDAP server and allocates an LDAP +structure which is used to identify +the connection and to maintain per-connection information. +.B ldap_init() +allocates an LDAP structure but does not open an initial connection. +.B ldap_initialize() +allocates an LDAP structure but does not open an initial connection. +.B ldap_init_fd() +allocates an LDAP structure using an existing connection on the +provided socket. +One +of these routines must be called before any operations are attempted. +.LP +.B ldap_open() +takes \fIhost\fP, the hostname on which the LDAP server is +running, and \fIport\fP, the port number to which to connect. If the default +IANA-assigned port of 389 is desired, LDAP_PORT should be specified for +\fIport\fP. The \fIhost\fP parameter may contain a blank-separated list +of hosts to try to connect to, and each host may optionally by of the form +\fIhost:port\fP. If present, the \fI:port\fP overrides the \fIport\fP +parameter to +.BR ldap_open() . +Upon successfully making a connection to an +LDAP server, +.B ldap_open() +returns a pointer to an opaque LDAP structure, which should be passed +to subsequent calls to +.BR ldap_bind() , +.BR ldap_search() , +etc. Certain fields in the LDAP structure can be set to indicate size limit, +time limit, and how aliases are handled during operations; read and write access +to those fields must occur by calling +.BR ldap_get_option (3) +and +.BR ldap_set_option (3) +respectively, whenever possible. +.LP +.B +ldap_init() +acts just like +.BR ldap_open() , +but does not open a connection +to the LDAP server. The actual connection open will occur when the +first operation is attempted. +.LP +.B ldap_initialize() +acts like +.BR ldap_init() , +but it returns an integer indicating either success or the failure reason, +and it allows to specify details for the connection in the schema portion +of the URI. +The +.I uri +parameter may be a comma- or whitespace-separated list of URIs +containing only the +.IR schema , +the +.IR host , +and the +.I port +fields. +Apart from +.BR ldap , +other (non-standard) recognized values of the +.I schema +field are +.B ldaps +(LDAP over TLS), +.B ldapi +(LDAP over IPC), +and +.B cldap +(connectionless LDAP). +If other fields are present, the behavior is undefined. +.LP +At this time, +.B ldap_open() +and +.B ldap_init() +are deprecated in favor of +.BR ldap_initialize() , +essentially because the latter allows to specify a schema in the URI +and it explicitly returns an error code. +.LP +.B ldap_init_fd() +allows an LDAP structure to be initialized using an already-opened +connection. The +.I proto +parameter should be one of LDAP_PROTO_TCP, LDAP_PROTO_UDP, +or LDAP_PROTO_IPC +for a connection using TCP, UDP, or IPC, respectively. The value +LDAP_PROTO_EXT +may also be specified if user-supplied sockbuf handlers are going to +be used. Note that support for UDP is not implemented unless libldap +was built with LDAP_CONNECTIONLESS defined. +The +.I uri +parameter may optionally be provided for informational purposes. +.LP +.B ldap_set_urllist_proc() +allows to set a function +.I proc +of type +.I LDAP_URLLIST_PROC +that is called when a successful connection can be established. +This function receives the list of URIs parsed from the +.I uri +string originally passed to +.BR ldap_initialize() , +and the one that successfully connected. +The function may manipulate the URI list; the typical use consists +in moving the successful URI to the head of the list, +so that subsequent attempts to connect to one of the URIs using the same LDAP handle +will try it first. +If +.I ld +is null, +.I proc +is set as a global parameter that is inherited by all handlers +within the process that are created after the call to +.BR ldap_set_urllist_proc() . +By default, no +.I LDAP_URLLIST_PROC +is set. +In a multithreaded environment, +.B ldap_set_urllist_proc() +must be called before any concurrent operation using the LDAP handle is started. + +Note: the first call into the LDAP library also initializes the global +options for the library. As such the first call should be single-threaded +or otherwise protected to insure that only one call is active. It is +recommended that +.BR ldap_get_option () +or +.BR ldap_set_option () +be used in the program's main thread before any additional threads are created. +See +.BR ldap_get_option (3). + +.SH ERRORS +If an error occurs, +.B ldap_open() +and +.B ldap_init() +will return NULL and +.I errno +should be set appropriately. +.B ldap_initialize() +and +.B ldap_init_fd() +will directly return the LDAP code associated to the error (or +.I LDAP_SUCCESS +in case of success); +.I errno +should be set as well whenever appropriate. +.B ldap_set_urllist_proc() +returns LDAP_OPT_ERROR on error, and LDAP_OPT_SUCCESS on success. +.SH SEE ALSO +.BR ldap (3), +.BR ldap_bind (3), +.BR ldap_get_option (3), +.BR ldap_set_option (3), +.BR lber-sockbuf (3), +.BR errno (3) +.SH ACKNOWLEDGEMENTS +.so ../Project |