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download PDF document: gss_display_status.3.pdf

GSS_DISPLAY_STATUS(3) FreeBSD Library Functions Manual (prm)
NAME gss_display_status - Convert a GSS-API status code to text
SYNOPSIS #include <gssapi/gssapi.h>
OM_uint32 gss_display_status(OM_uint32 *minor_status, OM_uint32 status_value, int status_type, const gss_OID mech_type, OM_uint32 *message_context, gss_buffer_t status_string);
DESCRIPTION Allows an application to obtain a textual representation of a GSS-API status code, for display to the user or for logging purposes. Since some status values may indicate multiple conditions, applications may need to call gss_display_status() multiple times, each call generating a single text string. The message_context parameter is used by gss_display_status() to store state information about which error messages have already been extracted from a given status_value; message_context must be initialized to zero by the application prior to the first call, and gss_display_status() will return a non-zero value in this parameter if there are further messages to extract.
The message_context parameter contains all state information required by gss_display_status() in order to extract further messages from the status_value; even when a non-zero value is returned in this parameter, the application is not required to call gss_display_status() again unless subsequent messages are desired. The following code extracts all messages from a given status code and prints them to stderr:
OM_uint32 message_context; OM_uint32 status_code; OM_uint32 maj_status; OM_uint32 min_status; gss_buffer_desc status_string;
...
message_context = 0;
do {
maj_status = gss_display_status ( &min_status, status_code, GSS_C_GSS_CODE, GSS_C_NO_OID, &message_context, &status_string)
fprintf(stderr, "%.*s\n", (int)status_string.length, (char *)status_string.value);
gss_release_buffer(&min_status, &status_string);
status_type
GSS_C_GSS_CODE status_value is a GSS status code
GSS_C_MECH_CODE status_value is a mechanism status code
mech_type Underlying mechanism (used to interpret a minor status value). Supply GSS_C_NO_OID to obtain the system default.
message_context Should be initialized to zero by the application prior to the first call. On return from gss_display_status(), a non-zero status_value parameter indicates that additional messages may be extracted from the status code via subsequent calls to gss_display_status(), passing the same status_value, status_type, mech_type, and message_context parameters.
status_string Textual interpretation of the status_value. Storage associated with this parameter must be freed by the application after use with a call to gss_release_buffer().
RETURN VALUES GSS_S_COMPLETE Successful completion
GSS_S_BAD_MECH Indicates that translation in accordance with an unsupported mechanism type was requested
GSS_S_BAD_STATUS The status value was not recognized, or the status type was neither GSS_C_GSS_CODE nor GSS_C_MECH_CODE.
SEE ALSO gss_release_buffer(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_display_status function first appeared in FreeBSD 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 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.
FreeBSD 14.0-RELEASE-p6 January 26, 2010 FreeBSD 14.0-RELEASE-p6