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- /*
- * Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
- #include <string.h>
- #include "apps.h"
- #include "progs.h"
- #include <openssl/bio.h>
- #include <openssl/err.h>
- #include <openssl/evp.h>
- #include <openssl/params.h>
- #undef BUFSIZE
- #define BUFSIZE 1024*8
- typedef enum OPTION_choice {
- OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
- OPT_MACOPT, OPT_BIN, OPT_IN, OPT_OUT,
- OPT_PROV_ENUM
- } OPTION_CHOICE;
- const OPTIONS mac_options[] = {
- {OPT_HELP_STR, 1, '-', "Usage: %s [options] mac_name\n"},
- OPT_SECTION("General"),
- {"help", OPT_HELP, '-', "Display this summary"},
- {"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form"},
- {OPT_MORE_STR, 1, '-', "See 'PARAMETER NAMES' in the EVP_MAC_ docs"},
- OPT_SECTION("Input"),
- {"in", OPT_IN, '<', "Input file to MAC (default is stdin)"},
- OPT_SECTION("Output"),
- {"out", OPT_OUT, '>', "Output to filename rather than stdout"},
- {"binary", OPT_BIN, '-',
- "Output in binary format (default is hexadecimal)"},
- OPT_PROV_OPTIONS,
- OPT_PARAMETERS(),
- {"mac_name", 0, 0, "MAC algorithm"},
- {NULL}
- };
- int mac_main(int argc, char **argv)
- {
- int ret = 1;
- char *prog;
- EVP_MAC *mac = NULL;
- OPTION_CHOICE o;
- EVP_MAC_CTX *ctx = NULL;
- STACK_OF(OPENSSL_STRING) *opts = NULL;
- unsigned char *buf = NULL;
- size_t len;
- int i;
- BIO *in = NULL, *out = NULL;
- const char *outfile = NULL;
- const char *infile = NULL;
- int out_bin = 0;
- int inform = FORMAT_BINARY;
- prog = opt_init(argc, argv, mac_options);
- buf = app_malloc(BUFSIZE, "I/O buffer");
- while ((o = opt_next()) != OPT_EOF) {
- switch (o) {
- default:
- opthelp:
- BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
- goto err;
- case OPT_HELP:
- opt_help(mac_options);
- ret = 0;
- goto err;
- case OPT_BIN:
- out_bin = 1;
- break;
- case OPT_IN:
- infile = opt_arg();
- break;
- case OPT_OUT:
- outfile = opt_arg();
- break;
- case OPT_MACOPT:
- if (opts == NULL)
- opts = sk_OPENSSL_STRING_new_null();
- if (opts == NULL || !sk_OPENSSL_STRING_push(opts, opt_arg()))
- goto opthelp;
- break;
- case OPT_PROV_CASES:
- if (!opt_provider(o))
- goto err;
- break;
- }
- }
- argc = opt_num_rest();
- argv = opt_rest();
- if (argc != 1) {
- BIO_printf(bio_err, "Invalid number of extra arguments\n");
- goto opthelp;
- }
- mac = EVP_MAC_fetch(NULL, argv[0], NULL);
- if (mac == NULL) {
- BIO_printf(bio_err, "Invalid MAC name %s\n", argv[0]);
- goto opthelp;
- }
- ctx = EVP_MAC_CTX_new(mac);
- if (ctx == NULL)
- goto err;
- if (opts != NULL) {
- int ok = 1;
- OSSL_PARAM *params =
- app_params_new_from_opts(opts, EVP_MAC_settable_ctx_params(mac));
- if (params == NULL)
- goto err;
- if (!EVP_MAC_CTX_set_params(ctx, params)) {
- BIO_printf(bio_err, "MAC parameter error\n");
- ERR_print_errors(bio_err);
- ok = 0;
- }
- app_params_free(params);
- if (!ok)
- goto err;
- }
- /* Use text mode for stdin */
- if (infile == NULL || strcmp(infile, "-") == 0)
- inform = FORMAT_TEXT;
- in = bio_open_default(infile, 'r', inform);
- if (in == NULL)
- goto err;
- out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
- if (out == NULL)
- goto err;
- if (!EVP_MAC_init(ctx)) {
- BIO_printf(bio_err, "EVP_MAC_Init failed\n");
- goto err;
- }
- for (;;) {
- i = BIO_read(in, (char *)buf, BUFSIZE);
- if (i < 0) {
- BIO_printf(bio_err, "Read Error in '%s'\n", infile);
- goto err;
- }
- if (i == 0)
- break;
- if (!EVP_MAC_update(ctx, buf, i)) {
- BIO_printf(bio_err, "EVP_MAC_update failed\n");
- goto err;
- }
- }
- if (!EVP_MAC_final(ctx, NULL, &len, 0)) {
- BIO_printf(bio_err, "EVP_MAC_final failed\n");
- goto err;
- }
- if (len > BUFSIZE) {
- BIO_printf(bio_err, "output len is too large\n");
- goto err;
- }
- if (!EVP_MAC_final(ctx, buf, &len, BUFSIZE)) {
- BIO_printf(bio_err, "EVP_MAC_final failed\n");
- goto err;
- }
- if (out_bin) {
- BIO_write(out, buf, len);
- } else {
- if (outfile == NULL)
- BIO_printf(out,"\n");
- for (i = 0; i < (int)len; ++i)
- BIO_printf(out, "%02X", buf[i]);
- if (outfile == NULL)
- BIO_printf(out,"\n");
- }
- ret = 0;
- err:
- if (ret != 0)
- ERR_print_errors(bio_err);
- OPENSSL_clear_free(buf, BUFSIZE);
- sk_OPENSSL_STRING_free(opts);
- BIO_free(in);
- BIO_free(out);
- EVP_MAC_CTX_free(ctx);
- EVP_MAC_free(mac);
- return ret;
- }
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