mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
201 lines
5.2 KiB
C
201 lines
5.2 KiB
C
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/*
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* Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include "apps.h"
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#include "progs.h"
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#undef BUFSIZE
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#define BUFSIZE 1024*8
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_MACOPT, OPT_BIN, OPT_IN, OPT_OUT
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} OPTION_CHOICE;
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const OPTIONS mac_options[] = {
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{OPT_HELP_STR, 1, '-', "Usage: %s [options] mac_name\n"},
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{OPT_HELP_STR, 1, '-', "mac_name\t\t MAC algorithm (See list "
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"-mac-algorithms)"},
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{"help", OPT_HELP, '-', "Display this summary"},
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{"macopt", OPT_MACOPT, 's', "MAC algorithm control parameters in n:v form. "
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"See 'Supported Controls' in the EVP_MAC_ docs"},
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{"in", OPT_IN, '<', "Input file to MAC (default is stdin)"},
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{"out", OPT_OUT, '>', "Output to filename rather than stdout"},
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{"binary", OPT_BIN, '-', "Output in binary format (Default is hexadecimal "
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"output)"},
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{NULL}
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};
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static int mac_ctrl_string(EVP_MAC_CTX *ctx, const char *value)
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{
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int rv;
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char *stmp, *vtmp = NULL;
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stmp = OPENSSL_strdup(value);
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if (stmp == NULL)
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return -1;
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vtmp = strchr(stmp, ':');
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if (vtmp != NULL) {
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*vtmp = 0;
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vtmp++;
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}
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rv = EVP_MAC_ctrl_str(ctx, stmp, vtmp);
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OPENSSL_free(stmp);
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return rv;
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}
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int mac_main(int argc, char **argv)
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{
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int ret = 1;
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char *prog;
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const EVP_MAC *mac = NULL;
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OPTION_CHOICE o;
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EVP_MAC_CTX *ctx = NULL;
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STACK_OF(OPENSSL_STRING) *opts = NULL;
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unsigned char *buf = NULL;
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size_t len;
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int i;
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BIO *in = NULL, *out = NULL;
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const char *outfile = NULL;
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const char *infile = NULL;
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int out_bin = 0;
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int inform = FORMAT_BINARY;
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prog = opt_init(argc, argv, mac_options);
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buf = app_malloc(BUFSIZE, "I/O buffer");
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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opthelp:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto err;
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case OPT_HELP:
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opt_help(mac_options);
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ret = 0;
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goto err;
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case OPT_BIN:
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out_bin = 1;
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break;
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case OPT_IN:
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infile = opt_arg();
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break;
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case OPT_OUT:
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outfile = opt_arg();
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break;
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case OPT_MACOPT:
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if (opts == NULL)
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opts = sk_OPENSSL_STRING_new_null();
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if (opts == NULL || !sk_OPENSSL_STRING_push(opts, opt_arg()))
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goto opthelp;
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break;
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}
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}
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argc = opt_num_rest();
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argv = opt_rest();
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if (argc != 1) {
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BIO_printf(bio_err, "Invalid number of extra arguments\n");
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goto opthelp;
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}
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mac = EVP_get_macbyname(argv[0]);
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if (mac == NULL) {
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BIO_printf(bio_err, "Invalid MAC name %s\n", argv[0]);
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goto opthelp;
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}
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ctx = EVP_MAC_CTX_new(mac);
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if (ctx == NULL)
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goto err;
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if (opts != NULL) {
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for (i = 0; i < sk_OPENSSL_STRING_num(opts); i++) {
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char *opt = sk_OPENSSL_STRING_value(opts, i);
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if (mac_ctrl_string(ctx, opt) <= 0) {
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BIO_printf(bio_err, "MAC parameter error '%s'\n", opt);
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ERR_print_errors(bio_err);
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goto err;
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}
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}
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}
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/* Use text mode for stdin */
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if (infile == NULL || strcmp(infile, "-") == 0)
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inform = FORMAT_TEXT;
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in = bio_open_default(infile, 'r', inform);
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if (in == NULL)
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goto err;
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out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
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if (out == NULL)
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goto err;
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if (!EVP_MAC_init(ctx)) {
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BIO_printf(bio_err, "EVP_MAC_Init failed\n");
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goto err;
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}
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for (;;) {
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i = BIO_read(in, (char *)buf, BUFSIZE);
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if (i < 0) {
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BIO_printf(bio_err, "Read Error in '%s'\n", infile);
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goto err;
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}
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if (i == 0)
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break;
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if (!EVP_MAC_update(ctx, buf, i)) {
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BIO_printf(bio_err, "EVP_MAC_update failed\n");
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goto err;
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}
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}
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if (!EVP_MAC_final(ctx, NULL, &len)) {
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BIO_printf(bio_err, "EVP_MAC_final failed\n");
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goto err;
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}
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if (len > BUFSIZE) {
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BIO_printf(bio_err, "output len is too large\n");
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goto err;
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}
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if (!EVP_MAC_final(ctx, buf, &len)) {
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BIO_printf(bio_err, "EVP_MAC_final failed\n");
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goto err;
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}
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if (out_bin) {
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BIO_write(out, buf, len);
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} else {
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if (outfile == NULL)
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BIO_printf(out,"\n");
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for (i = 0; i < (int)len; ++i)
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BIO_printf(out, "%02X", buf[i]);
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if (outfile == NULL)
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BIO_printf(out,"\n");
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}
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ret = 0;
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err:
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if (ret != 0)
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ERR_print_errors(bio_err);
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OPENSSL_clear_free(buf, BUFSIZE);
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sk_OPENSSL_STRING_free(opts);
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BIO_free(in);
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BIO_free(out);
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EVP_MAC_CTX_free(ctx);
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return ret;
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}
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