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ldap_open(3ldap) [opensolaris man page]

ldap_open(3LDAP)					      LDAP Library Functions						  ldap_open(3LDAP)

NAME
ldap_open, ldap_init - initialize an LDAP session SYNOPSIS
cc [ flag... ] file... -lldap [ library... ] #include <lber.h> #include <ldap.h> LDAP *ldap_open(const char *host, int port); LDAP *ldap_init(const char *host, int port); DESCRIPTION
The ldap_open() function initializes an LDAP session and also opens a connection to an LDAP server before it returns to the caller. Unlike ldap_open(), ldap_init() does not open a connection to the LDAP server until an operation, such as a search request, is performed. The ldap_open() function is deprecated and should no longer be used. Call ldap_init() instead. A list of LDAP hostnames or an IPv4 or IPv6 address can be specified with the ldap_open() and ldap_init() functions. The hostname can include a port number, separated from the hostname by a colon (:). A port number included as part of the hostname takes precedence over the port parameter. The ldap_open() and ldap_init() functions attempt connections with LDAP hosts in the order listed and return the first suc- cessful connection. PARAMETERS
These functions support the following parameters. host The hostname, IPv4 or IPv6 address of the host that runs the LDAP server. A space-separated list of hostnames can also be used for this parameter. port TCP port number of a connection. Supply the constant LDAP_PORT to obtain the default LDAP port of 389. If a host includes a port number, the default parameter is ignored. RETURN VALUES
The ldap_open() and ldap_init() functions return a handle to an LDAP session that contains a pointer to an opaque structure. The structure must be passed to subsequent calls for the session. If a session cannot be initialized, the functions return NULL and errno should be set appropriately. Various aspects of this opaque structure can be read or written to control the session-wide parameters. Use the ldap_get_option(3LDAP) to access the current option values and the ldap_set_option(3LDAP) to set values for these options. EXAMPLES
Example 1 Specifying IPv4 and IPv6 Addresses LDAP sessions can be initialized with hostnames, IPv4 or IPv6 addresses, such as those shown in the following examples. ldap_init("hosta:636 hostb", 389) ldap_init("192.168.82.110:389", 389) ldap_init("[fec0::114:a00:20ff:ab3d:83ed]", 389) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
errno(3C), ldap(3LDAP), ldap_bind(3LDAP), ldap_get_option(3LDAP), ldap_set_option(3LDAP), attributes(5) SunOS 5.11 15 Jan 2004 ldap_open(3LDAP)

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LDAP_OPEN(3)						     Library Functions Manual						      LDAP_OPEN(3)

NAME
ldap_init, ldap_initialize, ldap_open - Initialize the LDAP library and open a connection to an LDAP server LIBRARY
OpenLDAP LDAP (libldap, -lldap) SYNOPSIS
#include <ldap.h> LDAP *ldap_open(host, port) char *host; int port; LDAP *ldap_init(host, port) char *host; int port; int ldap_initialize(ldp, uri) LDAP **ldp; char *uri; #include <ldap_pvt.h> int ldap_init_fd(fd, proto, uri, ldp) ber_socket_t fd; int proto; char *uri; LDAP **ldp; DESCRIPTION
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. ldap_init() allocates an LDAP structure but does not open an initial connection. ldap_initialize() allocates an LDAP structure but does not open an initial connection. 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. ldap_open() takes host, the hostname on which the LDAP server is running, and port, the port number to which to connect. If the default IANA-assigned port of 389 is desired, LDAP_PORT should be specified for port. The host parameter may contain a blank-separated list of hosts to try to connect to, and each host may optionally by of the form host:port. If present, the :port overrides the port parameter to ldap_open(). Upon successfully making a connection to an LDAP server, ldap_open() returns a pointer to an opaque LDAP structure, which should be passed to subsequent calls to ldap_bind(), 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 ldap_get_option(3) and ldap_set_option(3) respectively, whenever possible. ldap_init() acts just like ldap_open(), but does not open a connection to the LDAP server. The actual connection open will occur when the first operation is attempted. ldap_initialize() acts like ldap_init(), but it returns an integer indicating either success or the failure reason, and it allows to spec- ify details for the connection in the schema portion of the URI. The uri parameter may be a comma- or whitespace-separated list of URIs containing only the schema, the host, and the port fields. Apart from ldap, other (non-standard) recognized values of the schema field are ldaps (LDAP over TLS), ldapi (LDAP over IPC), and cldap (connectionless LDAP). If other fields are present, the behavior is undefined. At this time, ldap_open() and ldap_init() are deprecated in favor of ldap_initialize(), essentially because the latter allows to specify a schema in the URI and it explicitly returns an error code. ldap_init_fd() allows an LDAP structure to be initialized using an already-opened connection. The 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 uri parameter may optionally be provided for informational purposes. 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 ldap_get_option() or ldap_set_option() be used in the program's main thread before any additional threads are created. See ldap_get_option(3). ERRORS
If an error occurs, ldap_open() and ldap_init() will return NULL and errno should be set appropriately. ldap_initialize() and ldap_init_fd() will directly return the LDAP code associated to the error (or LDAP_SUCCESS in case of success); errno should be set as well whenever appropriate. SEE ALSO
ldap(3), ldap_bind(3), ldap_get_option(3), ldap_set_option(3), lber-sockbuf(3), errno(3) ACKNOWLEDGEMENTS
OpenLDAP Software is developed and maintained by The OpenLDAP Project <http://www.openldap.org/>. OpenLDAP Software is derived from Uni- versity of Michigan LDAP 3.3 Release. OpenLDAP 2.4.21 2009/12/20 LDAP_OPEN(3)
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