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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2010-2021. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include "common.h"
#include <string.h>
#define MAX_CRYPTOLIB_ERR_SIZE 256
#define SEP ": "
ERL_NIF_TERM raise_exception(ErlNifEnv* env, ERL_NIF_TERM id, int arg_num, char* explanation, char* file, int line)
/* Ex: raise_exception(atom_badarg, 1, "Unknown cipher", "api_ng.c", 17)
* -> {badarg, {"api_ng.c",17}, 1, "Unknown cipher"}
* id = atom_error | atom_notsup | atom_badarg
* arg_num is the (zero-based) position in argv[]. -1 is to signal that it is undefined.
*/
{
ERL_NIF_TERM file_info, exception;
char *error_msg;
#ifdef CRYPTO_DEVELOP_ERRORS
/* Set CRYPTO_DEVELOP_ERRORS to make error messages more verbose,
that is, include the error msg from cryptolib.
Example:
{error,{"api_ng.c",750},"Can't copy ctx_res"}
becomes
{error,{"api_ng.c",750},"Can't copy ctx_res: error:030000BE:digital envelope routines::not able to copy ctx"}
which enables the developer to locate more in detail where in the cryptolib code a test failed.
*/
char *p;
/* Make the error message (concat explanation, ": ", cryptolib error msg) */
error_msg = enif_alloc(strlen(explanation) + strlen(SEP) + MAX_CRYPTOLIB_ERR_SIZE);
p = error_msg;
strcpy(p, explanation);
p += strlen(explanation);
strcpy(p, SEP);
p += strlen(SEP);
ERR_error_string_n(ERR_peek_last_error(), p, MAX_CRYPTOLIB_ERR_SIZE);
#else
error_msg = explanation;
#endif
/* Make the data for exception */
file_info = enif_make_new_map(env);
enif_make_map_put(env, file_info,
enif_make_atom(env,"c_file_name"),
enif_make_string(env, file, (ERL_NIF_LATIN1)),
&file_info);
enif_make_map_put(env, file_info,
enif_make_atom(env,"c_file_line_num"),
enif_make_int(env, line),
&file_info);
enif_make_map_put(env, file_info,
enif_make_atom(env,"c_function_arg_num"),
enif_make_int(env, arg_num),
&file_info);
exception =
enif_make_tuple3(env,
id,
file_info,
enif_make_string(env, error_msg, (ERL_NIF_LATIN1))
);
#ifdef CRYPTO_DEVELOP_ERRORS
enif_free(error_msg);
#endif
return enif_raise_exception(env, exception);
}
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