GSS_INQUIRE_CONTEXT(3) Programmer's Manual GSS_INQUIRE_CONTEXT(3)
NAME
gss_inquire_context -- Obtain information about a security context
SYNOPSIS
#include <gssapi/gssapi.h>
OM_uint32
gss_inquire_context(OM_uint32 *minor_status, const gss_ctx_id_t context_handle, gss_name_t *src_name, gss_name_t *targ_name,
OM_uint32 *lifetime_rec, gss_OID *mech_type, OM_uint32 *ctx_flags, int *locally_initiated, int *open);
DESCRIPTION
Obtains information about a security context. The caller must already have obtained a handle that refers to the context, although the con-
text need not be fully established.
PARAMETERS
minor_status Mechanism specific status code.
context_handle A handle that refers to the security context.
src_name The name of the context initiator. If the context was established using anonymous authentication, and if the application
invoking gss_inquire_context() is the context acceptor, an anonymous name will be returned. Storage associated with this
name must be freed by the application after use with a call to gss_release_name(). Specify NULL if not required.
targ_name The name of the context acceptor. Storage associated with this name must be freed by the application after use with a
call to gss_release_name(). If the context acceptor did not authenticate itself, and if the initiator did not specify a
target name in its call to gss_init_sec_context(), the value GSS_C_NO_NAME will be returned. Specify NULL if not
required.
lifetime_rec The number of seconds for which the context will remain valid. If the context has expired, this parameter will be set to
zero. If the implementation does not support context expiration, the value GSS_C_INDEFINITE will be returned. Specify
NULL if not required.
mech_type The security mechanism providing the context. The returned OID will be a pointer to static storage that should be treated
as read-only by the application; in particular the application should not attempt to free it. Specify NULL if not
required.
ctx_flags Contains various independent flags, each of which indicates that the context supports (or is expected to support, if open
is false) a specific service option. If not needed, specify NULL. Symbolic names are provided for each flag, and the
symbolic names corresponding to the required flags should be logically-ANDed with the ctx_flags value to test whether a
given option is supported by the context. The flags are:
GSS_C_DELEG_FLAG
True Credentials were delegated from the initiator to the acceptor.
False No credentials were delegated.
GSS_C_MUTUAL_FLAG
True The acceptor was authenticated to the initiator.
False The acceptor did not authenticate itself.
GSS_C_REPLAY_FLAG
True Replay of protected messages will be detected.
False Replayed messages will not be detected.
GSS_C_SEQUENCE_FLAG
True Out-of-sequence protected messages will be detected.
False Out-of-sequence messages will not be detected.
GSS_C_CONF_FLAG
True Confidentiality service may be invoked by calling gss_wrap() routine.
False No confidentiality service (via gss_wrap()) available. gss_wrap() will provide message encapsulation, data-
origin authentication and integrity services only.
GSS_C_INTEG_FLAG
True Integrity service may be invoked by calling either gss_get_mic() or gss_wrap() routines.
False Per-message integrity service unavailable.
GSS_C_ANON_FLAG
True The initiator's identity will not be revealed to the acceptor. The src_name parameter (if requested) contains
an anonymous internal name.
False The initiator has been authenticated normally.
GSS_C_PROT_READY_FLAG
True Protection services (as specified by the states of the GSS_C_CONF_FLAG and GSS_C_INTEG_FLAG) are available for
use.
False Protection services (as specified by the states of the GSS_C_CONF_FLAG and GSS_C_INTEG_FLAG) are available only
if the context is fully established (i.e. if the open parameter is non-zero).
GSS_C_TRANS_FLAG
True The security context may be transferred to other processes via a call to gss_export_sec_context().
False The security context is not transferable.
locally_initiated Non-zero if the invoking application is the context initiator. Specify NULL if not required.
open Non-zero if the context is fully established; Zero if a context-establishment token is expected from the peer application.
Specify NULL if not required.
RETURN VALUES
GSS_S_COMPLETE Successful completion
GSS_S_NO_CONTEXT The referenced context could not be accessed
SEE ALSO
gss_export_sec_context(3), gss_get_mic(3), gss_init_sec_context(3), gss_release_name(3), gss_wrap(3)
STANDARDS
RFC 2743 Generic Security Service Application Program Interface Version 2, Update 1
RFC 2744 Generic Security Service API Version 2 : C-bindings
HISTORY
The gss_inquire_context function first appeared in FreeBSD 7.0.
AUTHORS
John Wray, Iris Associates
COPYRIGHT
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January 26, 2010 BSD