156 lines
4.5 KiB
C
156 lines
4.5 KiB
C
/*
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* Copyright (c) 2001, 2003, 2005 - 2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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RCSID("$Id: error_string.c 22142 2007-12-04 16:56:02Z lha $");
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#undef __attribute__
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#define __attribute__(X)
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void KRB5_LIB_FUNCTION
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krb5_free_error_string(krb5_context context, char *str)
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{
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HEIMDAL_MUTEX_lock(context->mutex);
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if (str != context->error_buf)
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free(str);
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HEIMDAL_MUTEX_unlock(context->mutex);
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}
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void KRB5_LIB_FUNCTION
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krb5_clear_error_string(krb5_context context)
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{
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HEIMDAL_MUTEX_lock(context->mutex);
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if (context->error_string != NULL
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&& context->error_string != context->error_buf)
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free(context->error_string);
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context->error_string = NULL;
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HEIMDAL_MUTEX_unlock(context->mutex);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_set_error_string(krb5_context context, const char *fmt, ...)
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__attribute__((format (printf, 2, 3)))
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{
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krb5_error_code ret;
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va_list ap;
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va_start(ap, fmt);
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ret = krb5_vset_error_string (context, fmt, ap);
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va_end(ap);
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return ret;
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_vset_error_string(krb5_context context, const char *fmt, va_list args)
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__attribute__ ((format (printf, 2, 0)))
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{
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krb5_clear_error_string(context);
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HEIMDAL_MUTEX_lock(context->mutex);
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vasprintf(&context->error_string, fmt, args);
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if(context->error_string == NULL) {
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vsnprintf (context->error_buf, sizeof(context->error_buf), fmt, args);
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context->error_string = context->error_buf;
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}
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HEIMDAL_MUTEX_unlock(context->mutex);
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return 0;
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}
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/**
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* Return the error message in context. On error or no error string,
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* the function returns NULL.
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*
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* @param context Kerberos 5 context
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*
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* @return an error string, needs to be freed with
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* krb5_free_error_string(). The functions return NULL on error.
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*
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* @ingroup krb5_error
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*/
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char * KRB5_LIB_FUNCTION
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krb5_get_error_string(krb5_context context)
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{
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char *ret = NULL;
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HEIMDAL_MUTEX_lock(context->mutex);
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if (context->error_string)
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ret = strdup(context->error_string);
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HEIMDAL_MUTEX_unlock(context->mutex);
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return ret;
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}
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krb5_boolean KRB5_LIB_FUNCTION
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krb5_have_error_string(krb5_context context)
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{
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char *str;
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HEIMDAL_MUTEX_lock(context->mutex);
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str = context->error_string;
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HEIMDAL_MUTEX_unlock(context->mutex);
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return str != NULL;
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}
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/**
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* Return the error message for `code' in context. On error the
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* function returns NULL.
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*
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* @param context Kerberos 5 context
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* @param code Error code related to the error
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*
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* @return an error string, needs to be freed with
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* krb5_free_error_string(). The functions return NULL on error.
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*
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* @ingroup krb5_error
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*/
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char * KRB5_LIB_FUNCTION
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krb5_get_error_message(krb5_context context, krb5_error_code code)
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{
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const char *cstr;
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char *str;
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str = krb5_get_error_string(context);
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if (str)
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return str;
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cstr = krb5_get_err_text(context, code);
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if (cstr)
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return strdup(cstr);
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if (asprintf(&str, "<unknown error: %d>", code) == -1)
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return NULL;
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return str;
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}
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