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Man Pages


Manual Reference Pages  -  GSS_INQUIRE_CONTEXT (3)

NAME

gss_inquire_context - Obtain information about a security context

CONTENTS

Synopsis
Description
Parameters
Return Values
See Also
Standards
History
Authors
Copyright

SYNOPSIS


.In gssapi/gssapi.h OM_uint32
.Fo 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
.Fc

DESCRIPTION

Obtains information about a security context. The caller must already have obtained a handle that refers to the context, although the context 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_release_name(3), gss_init_sec_context(3), gss_wrap(3), gss_get_mic(3), gss_export_sec_context(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
.Fx 7.0 .

AUTHORS

John Wray, Iris Associates

COPYRIGHT

Copyright (C) The Internet Society (2000). All Rights Reserved.

This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English.

The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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