484 lines
14 KiB
C
484 lines
14 KiB
C
/* ocsp_nonblock_async.c
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*
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* Copyright (C) 2006-2022 wolfSSL Inc.
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*
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* This file is part of wolfSSL. (formerly known as CyaSSL)
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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**/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <wolfssl/options.h>
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#include <wolfssl/ssl.h>
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#include <wolfssl/error-ssl.h>
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#include <wolfssl/wolfcrypt/asn.h>
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#include <wolfssl/wolfcrypt/ecc.h>
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#define SERVER_NAME "www.youtube.com"
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#define SERVER_IP "172.217.18.14"
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#define SERVER_PORT 443
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#define ALPN_PROTOS "http/1.1"
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#if defined(WOLFSSL_ASYNC_CRYPT) && defined(HAVE_SNI) && defined(HAVE_ALPN) \
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&& defined(WOLFSSL_NONBLOCK_OCSP) && defined(HAVE_CERTIFICATE_STATUS_REQUEST) \
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&& defined(HAVE_CERTIFICATE_STATUS_REQUEST_V2)
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static const char* sys_certs_file = "/etc/ssl/certs/ca-certificates.crt";
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#if defined(WOLFSSL_ASYNC_CRYPT)
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static int wait_async(WOLFSSL_CTX* ctx, WOLFSSL* ssl)
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{
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WOLF_EVENT* wolfEvent;
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int n = 0;
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do {
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if (wolfSSL_CTX_AsyncPoll(ctx, &wolfEvent, 1, WOLF_POLL_FLAG_CHECK_HW, &n) != 0) {
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fprintf(stderr, "error calling wolfSSL_CTX_AsyncPoll()\n");
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return -1;
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}
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} while (n == 0);
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assert(n == 1);
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assert(ssl == (WOLFSSL*)wolfEvent->context);
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return 0;
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}
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#endif
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static int verify_cb(int preverify_ok, WOLFSSL_X509_STORE_CTX* store)
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{
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printf("verify_cb()\n");
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printf(" preverify_ok = %d\n", preverify_ok);
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if (preverify_ok == 0) {
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printf(" VERIFY FAILED\n");
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printf(" store->error_depth: %d\n", store->error_depth);
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printf(" store->error: %d\n", store->error);
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}
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return preverify_ok;
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}
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static int ocsp_cb(void* ctx, const char* url, int urlSz, unsigned char* request, int requestSz, unsigned char** response)
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{
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printf("ocsp_cb(): %s\n", url);
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if (access("ocsp.req", F_OK) == 0) {
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/* file exists, delete it and return (in order to simulate that it needs read I/O) */
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if (remove("ocsp.req") != 0) {
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return -1;
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}
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printf(" simulate 'want read'\n");
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return WOLFSSL_CBIO_ERR_WANT_READ;
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} else {
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/* file doesn't exist, proceed */
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}
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FILE *frq = fopen("ocsp.req", "wb");
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if (frq != NULL) {
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size_t nbytes = fwrite(request, 1, requestSz, frq);
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if (requestSz != nbytes) {
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printf("Failed to write all data. Wrote only %zu bytes.\n", nbytes);
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}
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fclose(frq);
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frq = NULL;
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} else {
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return -1;
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}
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char cmd[1024];
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snprintf(cmd, sizeof(cmd), "curl -s --data-binary '@ocsp.req' -o 'ocsp.resp' -X POST -H 'Cache-Control: no-cache' -H 'Content-Type: application/ocsp-request' '%s'", url);
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printf("Running command:\n%s\n", cmd);
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int ret = system(cmd);
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if (ret == 0) {
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FILE *frsp = fopen("ocsp.resp", "rb");
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if (frsp != NULL) {
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printf("Reading OCSP response from file...\n");
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char resp[4096];
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size_t nbytes = fread(resp, 1, sizeof(resp), frsp);
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printf("Read %zu bytes.\n", nbytes);
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fclose(frsp);
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frsp = NULL;
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printf("*response is %p\n", *response);
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printf("Allocating %zu bytes...\n", nbytes);
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*response = malloc(nbytes);
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if (*response == NULL) {
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printf("malloc() failed\n");
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return -1;
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}
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printf("*response is now %p\n", *response);
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printf("Copying bytes...\n");
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memcpy(*response, resp, nbytes);
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printf("Bytes copied.\n");
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return nbytes;
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}
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return -1;
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} else {
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printf("Command failed with error code '%d'.\n", ret);
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}
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return -1;
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}
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static void ocsp_free(void* ctx, unsigned char* response)
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{
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(void)ctx;
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if (response) {
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free(response);
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}
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}
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int test_connect(WOLFSSL_CTX* ctx)
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{
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int ret;
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int errCode;
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char errBuff[WOLFSSL_MAX_ERROR_SZ];
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int sockfd;
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struct sockaddr_in servAddr;
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int result = 0;
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memset(&servAddr, 0, sizeof(servAddr));
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servAddr.sin_family = AF_INET;
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servAddr.sin_port = htons(SERVER_PORT);
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if (inet_pton(AF_INET, SERVER_IP, &servAddr.sin_addr) != 1) {
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fprintf(stderr, "invalid address\n");
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result = -1;
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goto exit;
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}
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if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
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fprintf(stderr, "failed to create socket\n");
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result = -1;
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goto exit;
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}
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if (connect(sockfd, (struct sockaddr*) &servAddr, sizeof(servAddr)) == -1) {
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fprintf(stderr, "failed to connect socket\n");
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result = -1;
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goto exit;
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}
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// set non-block socket
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int flags = fcntl(sockfd, F_GETFL, 0);
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if (flags == -1) {
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fprintf(stderr, "fcntl(F_GETFL) failed\n");
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result = -1;
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goto exit_closefd;
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}
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if ((flags & O_NONBLOCK) == 0) {
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flags |= O_NONBLOCK;
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if (fcntl(sockfd, F_SETFL, flags) != 0) {
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fprintf(stderr, "fcntl(F_SETFL) failed\n");
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result = -1;
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goto exit_closefd;
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}
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}
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WOLFSSL *ssl = wolfSSL_new(ctx);
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if (ssl == NULL) {
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fprintf(stderr, "wolfSSL_new() failed\n");
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result = -1;
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goto exit_closefd;
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}
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wolfSSL_set_fd(ssl, sockfd);
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wolfSSL_set_using_nonblock(ssl, 1);
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ret = wolfSSL_SetOCSP_Cb(ssl, ocsp_cb, ocsp_free, NULL);
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if (ret != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_SetOCSP_Cb() failed with code %d\n", ret);
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result = -1;
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goto exit_freessl;
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}
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long opt = wolfSSL_get_options(ssl);
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const long ver_opt_mask = SSL_OP_NO_SSLv3 | SSL_OP_NO_TLSv1 | SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1_2;
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opt = (opt & ~ver_opt_mask) | SSL_OP_NO_SSLv3;
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if (opt != wolfSSL_set_options(ssl, opt)) {
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fprintf(stderr, "Could not configure TLS versions on client stub\n");
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result = -1;
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goto exit_freessl;
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}
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if ((ret = wolfSSL_UseSupportedCurve(ssl, WOLFSSL_ECC_X25519)) != SSL_SUCCESS ||
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(ret = wolfSSL_UseSupportedCurve(ssl, WOLFSSL_ECC_SECP256R1)) != SSL_SUCCESS ||
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(ret = wolfSSL_UseSupportedCurve(ssl, WOLFSSL_ECC_SECP384R1)) != SSL_SUCCESS ||
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(ret = wolfSSL_UseSupportedCurve(ssl, WOLFSSL_ECC_SECP521R1)) != SSL_SUCCESS) {
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fprintf(stderr, "Could not set SSL supported groups on client stub\n");
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result = -1;
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goto exit_freessl;
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}
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ret = wolfSSL_UseSNI(ssl, WOLFSSL_SNI_HOST_NAME, SERVER_NAME, strlen(SERVER_NAME));
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if (ret != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_UseSNI() failed with code %d\n", ret);
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result = -1;
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goto exit_freessl;
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}
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ret = wolfSSL_UseALPN(ssl, ALPN_PROTOS, strlen(ALPN_PROTOS), WOLFSSL_ALPN_FAILED_ON_MISMATCH);
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if (ret != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_UseALPN() failed with code %d\n", ret);
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result = -1;
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goto exit_freessl;
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}
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printf("Connecting...\n");
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do {
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ret = wolfSSL_connect(ssl);
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errCode = 0;
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if (ret != SSL_SUCCESS) {
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errCode = wolfSSL_get_error(ssl, ret);
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if (errCode != WOLFSSL_ERROR_WANT_READ) {
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printf("wolfSSL_connect() returned %d (error code %d)\n", ret, errCode);
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}
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#if defined(WOLFSSL_ASYNC_CRYPT)
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if (errCode == WC_PENDING_E) {
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if (wait_async(ctx, ssl) != 0) {
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fprintf(stderr, "wait_async() failed\n");
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result = -1;
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goto exit_freessl;
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}
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}
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#endif
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}
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} while (ret != SSL_SUCCESS && (errCode == SSL_ERROR_WANT_READ || errCode == OCSP_WANT_READ || errCode == WC_PENDING_E));
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if (ret != SSL_SUCCESS) {
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errCode = wolfSSL_get_error(ssl, ret);
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fprintf(stderr, "wolfSSL_connect() failed with code %d\n", ret);
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fprintf(stderr, "ERROR %d: %s\n", errCode,
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wolfSSL_ERR_error_string((unsigned long) errCode, errBuff));
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if (errCode == FATAL_ERROR) {
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WOLFSSL_ALERT_HISTORY hist;
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wolfSSL_get_alert_history(ssl, &hist);
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int last_alert_code = hist.last_rx.code;
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const char* last_alert_type = wolfSSL_alert_type_string_long(last_alert_code);
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fprintf(stderr, "Last alert received: %d - %s\n", last_alert_code, last_alert_type);
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}
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result = -1;
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goto exit_freessl;
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}
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printf("CONNECTED\n");
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if (wolfSSL_get_error(ssl, ret) != SOCKET_PEER_CLOSED_E) {
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printf(" Closing connection...\n");
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ret = wolfSSL_shutdown(ssl);
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if (ret == SSL_SHUTDOWN_NOT_DONE) {
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ret = wolfSSL_shutdown(ssl);
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}
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if (ret != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_shutdown() failed with code %d (error %d)\n", ret, wolfSSL_get_error(ssl, ret));
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result = -1;
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goto exit_freessl;
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}
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}
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exit_freessl:
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wolfSSL_free(ssl);
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exit_closefd:
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close(sockfd);
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printf(" CLOSED\n");
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exit:
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return result;
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}
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#endif
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int main(int argc, char** argv)
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{
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#if defined(WOLFSSL_ASYNC_CRYPT) && defined(HAVE_SNI) && defined(HAVE_ALPN) \
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&& defined(WOLFSSL_NONBLOCK_OCSP) && defined(HAVE_CERTIFICATE_STATUS_REQUEST) \
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&& defined(HAVE_CERTIFICATE_STATUS_REQUEST_V2)
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int err;
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int result = 0;
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WC_RNG rng;
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int asyncCryptDevId = INVALID_DEVID;
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pthread_t current_thread;
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WOLFSSL_METHOD *method = NULL;
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WOLFSSL_CTX *ctx = NULL;
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/* Check presence of sys_certs_file */
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if (access (sys_certs_file, F_OK) == -1 && argc == 1) {
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fprintf(stderr, "Default system cert file /etc/ssl/certs/ca-certificates.crt doesn't exist."
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" Please provide cert file path as show below.\n");
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fprintf(stderr, "./ocsp_nonblock_asynccrypt ../../mycerts/ca.crt\n");
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return -1;
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}
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/* Handle user provided certs file */
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else if (argc == 2) {
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if (access (argv[1], F_OK) == -1) {
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fprintf(stderr, "Provided cert file %s doesn't exist."
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" Please provide a valid path.\n", argv[1]);
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return -1;
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}
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else {
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sys_certs_file = argv[1];
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}
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}
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wolfSSL_Debugging_ON();
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err = wolfSSL_Init();
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if (err != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_Init() failed with code %d\n", err);
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return -1;
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}
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wolfSSL_load_error_strings();
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#if defined(WOLFSSL_ASYNC_CRYPT)
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wolfAsync_HardwareStart();
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printf("WolfSSL AsyncCrypt Enabled\n");
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#if defined(HAVE_INTEL_QA)
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printf("WolfSSL AsyncCrypt with IntelQA Mode\n");
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#elif defined(WOLFSSL_ASYNC_CRYPT_TEST)
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printf("WolfSSL AsyncCrypt with Simulation Mode\n");
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#else
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#error Unknown HW Acceleration device
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#endif
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current_thread = pthread_self();
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if (wolfAsync_DevOpenThread(&asyncCryptDevId, ¤t_thread) < 0) {
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fprintf(stderr, "Could not initialize AsyncCrypt device\n");
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return -1;
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}
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#endif
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err = wc_InitRng(&rng);
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if (err != 0) {
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fprintf(stderr, "wc_InitRng() failed with code %d\n", err);
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result = -1;
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goto exit;
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}
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method = wolfSSLv23_client_method();
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if (method == NULL) {
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fprintf(stderr, "failed to get client method\n");
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result = -1;
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goto exit;
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}
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ctx = wolfSSL_CTX_new(method);
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if (ctx == NULL) {
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fprintf(stderr, "failed to create context object\n");
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result = -1;
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goto exit;
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}
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wolfSSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, verify_cb);
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err = wolfSSL_CTX_UseOCSPStapling(ctx, WOLFSSL_CSR_OCSP, WOLFSSL_CSR_OCSP_USE_NONCE);
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if (err != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_CTX_UseOCSPStapling() returned %d\n", err);
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result = -1;
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goto exit;
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}
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err = wolfSSL_CTX_UseOCSPStaplingV2(ctx, WOLFSSL_CSR2_OCSP_MULTI, WOLFSSL_CSR2_OCSP_USE_NONCE);
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if (err != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_CTX_UseOCSPStaplingV2() returned %d\n", err);
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result = -1;
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goto exit;
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}
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err = wolfSSL_CTX_EnableOCSP(ctx, WOLFSSL_OCSP_CHECKALL | WOLFSSL_OCSP_NO_NONCE);
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if (err != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_CTX_EnableOCSP() returned %d\n", err);
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result = -1;
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goto exit;
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}
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err = wolfSSL_CTX_UnloadCAs(ctx);
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if (err != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_CTX_UnloadCAs() returned %d\n", err);
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result = -1;
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goto exit;
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}
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err = wolfSSL_CTX_load_verify_locations(ctx, sys_certs_file, NULL);
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if (err != SSL_SUCCESS) {
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fprintf(stderr, "wolfSSL_CTX_load_verify_locations() returned %d\n", err);
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result = -1;
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goto exit;
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}
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#if defined(WOLFSSL_ASYNC_CRYPT)
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if (wolfSSL_CTX_UseAsync(ctx, asyncCryptDevId) != SSL_SUCCESS ) {
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fprintf(stderr, "Could not enable AsyncCrypt device on TLS context\n");
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result = -1;
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goto exit;
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}
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#endif
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err = test_connect(ctx);
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if (err != 0) {
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fprintf(stderr, "test_connect() failed\n");
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fprintf(stderr, "CONNECT FAILED\n");
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}
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else {
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fprintf(stderr, "CONNECT PASSED\n");
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}
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wolfSSL_CTX_free(ctx);
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ctx = NULL;
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exit:
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printf("\nDONE\n\n");
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wc_FreeRng(&rng);
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#if defined(WOLFSSL_ASYNC_CRYPT)
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if (asyncCryptDevId != INVALID_DEVID) {
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wolfAsync_DevClose(&asyncCryptDevId);
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}
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wolfAsync_HardwareStop();
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#endif
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wolfSSL_Cleanup();
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return result;
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#else
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(void)argc;
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(void)argv;
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printf("Please compile wolfSSL with ./configure --enable-asynccrypt --enable-sni"
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" --enable-alpn --enable-ocspstapling --enable-ocspstapling2 --enable-opensslextra"
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" --enable-curve25519 CFLAGS=-DWOLFSSL_NONBLOCK_OCSP")
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return -1;
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#endif
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}
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