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/*
* Copyright (c) 2006 - 2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "hx_locl.h"
/**
* @page page_error Hx509 error reporting functions
*
* See the library functions here: @ref hx509_error
*/
struct hx509_error_data {
hx509_error next;
int code;
char *msg;
};
/**
* Resets the error strings the hx509 context.
*
* @param context A hx509 context.
*
* @ingroup hx509_error
*/
HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_clear_error_string(hx509_context context)
{
if (context) {
heim_release(context->error);
context->error = NULL;
}
}
/**
* Add an error message to the hx509 context.
*
* @param context A hx509 context.
* @param flags
* - HX509_ERROR_APPEND appends the error string to the old messages
(code is updated).
* @param code error code related to error message
* @param fmt error message format
* @param ap arguments to error message format
*
* @ingroup hx509_error
*/
HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_set_error_stringv(hx509_context context, int flags, int code,
const char *fmt, va_list ap)
{
heim_error_t msg;
if (context == NULL)
return;
msg = heim_error_createv(code, fmt, ap);
if (msg) {
if (flags & HX509_ERROR_APPEND)
heim_error_append(msg, context->error);
heim_release(context->error);
}
context->error = msg;
}
/**
* See hx509_set_error_stringv().
*
* @param context A hx509 context.
* @param flags
* - HX509_ERROR_APPEND appends the error string to the old messages
(code is updated).
* @param code error code related to error message
* @param fmt error message format
* @param ... arguments to error message format
*
* @ingroup hx509_error
*/
HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_set_error_string(hx509_context context, int flags, int code,
const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
hx509_set_error_stringv(context, flags, code, fmt, ap);
va_end(ap);
}
/**
* Sets ENOMEM as the error on a hx509 context.
*
* @param context A hx509 context.
*
* @ingroup hx509_error
*/
HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_enomem(hx509_context context)
{
return heim_enomem(context->hcontext);
}
/**
* Get an error string from context associated with error_code.
*
* @param context A hx509 context.
* @param error_code Get error message for this error code.
*
* @return error string, free with hx509_free_error_string().
*
* @ingroup hx509_error
*/
HX509_LIB_FUNCTION char * HX509_LIB_CALL
hx509_get_error_string(hx509_context context, int error_code)
{
heim_string_t s = NULL;
const char *cstr = NULL;
char *str;
if (context) {
if (context->error &&
heim_error_get_code(context->error) == error_code &&
(s = heim_error_copy_string(context->error)))
cstr = heim_string_get_utf8(s);
if (cstr == NULL)
cstr = com_right(context->et_list, error_code);
if (cstr == NULL && error_code > -1)
cstr = strerror(error_code);
} /* else this could be an error in hx509_context_init() */
if (cstr == NULL)
cstr = error_message(error_code); /* never returns NULL */
str = strdup(cstr);
heim_release(s);
return str;
}
/**
* Free error string returned by hx509_get_error_string().
*
* @param str error string to free.
*
* @ingroup hx509_error
*/
HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_free_error_string(char *str)
{
free(str);
}
/**
* Print error message and fatally exit from error code
*
* @param context A hx509 context.
* @param exit_code exit() code from process.
* @param error_code Error code for the reason to exit.
* @param fmt format string with the exit message.
* @param ... argument to format string.
*
* @ingroup hx509_error
*/
HX509_LIB_NORETURN_FUNCTION
__attribute__ ((__noreturn__, __format__ (__printf__, 4, 5)))
void HX509_LIB_CALL
hx509_err(hx509_context context, int exit_code,
int error_code, const char *fmt, ...)
{
va_list ap;
const char *msg;
char *str;
int ret;
va_start(ap, fmt);
ret = vasprintf(&str, fmt, ap);
va_end(ap);
msg = hx509_get_error_string(context, error_code);
if (msg == NULL)
msg = "no error";
errx(exit_code, "%s: %s", ret != -1 ? str : "ENOMEM", msg);
}
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