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wolfTPM/examples/tls/tls_server.c

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/* tls_server.c
*
* Copyright (C) 2006-2018 wolfSSL Inc.
*
* This file is part of wolfTPM.
*
* wolfTPM is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfTPM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <wolftpm/tpm2.h>
#include <wolftpm/tpm2_wrap.h>
#if !defined(WOLFTPM2_NO_WRAPPER) && defined(WOLF_CRYPTO_DEV) && \
!defined(WOLFTPM2_NO_WOLFCRYPT)
#include <examples/tpm_io.h>
#include <examples/tls/tls_server.h>
#include <wolfssl/ssl.h>
#ifndef TLS_PORT
#define TLS_PORT 11111
#endif
/* enable for testing ECC key/cert */
#if 0
#define USE_TLS_ECC
#endif
/*
* Generating the Server Certificate
*
* Run example for ./examples/csr/csr
* Result is: ./certs/tpm-rsa-cert.csr and ./certs/tpm-ecc-cert.csr
*
* Run ./certs/certreq.sh
* Result is: ./certs/server-rsa-cert.pem and ./certs/server-ecc-cert.pem
*
* This example server listens on port 11111 by default.
*
* You can validate using the wolfSSL example client this like:
* ./examples/client/client -h 192.168.0.10 -p 11111 -d -g
*
* Or using your browser: https://192.168.0.10:11111
* With browsers you will get certificate warnings until you load the test CA's
* ./certs/ca-rsa-cert.pem and ./certs/ca-ecc-cert.pem into your OS key store.
* With most browsers you can bypass the certificate warning.
*/
/******************************************************************************/
/* --- BEGIN Socket IO Callbacks --- */
/******************************************************************************/
/* socket includes */
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
typedef struct SockIoCbCtx {
int listenFd;
int fd;
} SockIoCbCtx;
static int SockIORecv(WOLFSSL* ssl, char* buff, int sz, void* ctx)
{
SockIoCbCtx* sockCtx = (SockIoCbCtx*)ctx;
int recvd;
(void)ssl;
/* Receive message from socket */
if ((recvd = recv(sockCtx->fd, buff, sz, 0)) == -1) {
/* error encountered. Be responsible and report it in wolfSSL terms */
fprintf(stderr, "IO RECEIVE ERROR: ");
switch (errno) {
#if EAGAIN != EWOULDBLOCK
case EAGAIN: /* EAGAIN == EWOULDBLOCK on some systems, but not others */
#endif
case EWOULDBLOCK:
if (wolfSSL_get_using_nonblock(ssl)) {
fprintf(stderr, "would block\n");
return WOLFSSL_CBIO_ERR_WANT_READ;
}
else {
fprintf(stderr, "socket timeout\n");
return WOLFSSL_CBIO_ERR_TIMEOUT;
}
case ECONNRESET:
fprintf(stderr, "connection reset\n");
return WOLFSSL_CBIO_ERR_CONN_RST;
case EINTR:
fprintf(stderr, "socket interrupted\n");
return WOLFSSL_CBIO_ERR_ISR;
case ECONNREFUSED:
fprintf(stderr, "connection refused\n");
return WOLFSSL_CBIO_ERR_WANT_READ;
case ECONNABORTED:
fprintf(stderr, "connection aborted\n");
return WOLFSSL_CBIO_ERR_CONN_CLOSE;
default:
fprintf(stderr, "general error\n");
return WOLFSSL_CBIO_ERR_GENERAL;
}
}
else if (recvd == 0) {
printf("Connection closed\n");
return WOLFSSL_CBIO_ERR_CONN_CLOSE;
}
#ifdef DEBUG_WOLFTPM
/* successful receive */
printf("SockIORecv: received %d bytes from %d\n", sz, sockCtx->fd);
#endif
return recvd;
}
static int SockIOSend(WOLFSSL* ssl, char* buff, int sz, void* ctx)
{
SockIoCbCtx* sockCtx = (SockIoCbCtx*)ctx;
int sent;
(void)ssl;
/* Receive message from socket */
if ((sent = send(sockCtx->fd, buff, sz, 0)) == -1) {
/* error encountered. Be responsible and report it in wolfSSL terms */
fprintf(stderr, "IO SEND ERROR: ");
switch (errno) {
#if EAGAIN != EWOULDBLOCK
case EAGAIN: /* EAGAIN == EWOULDBLOCK on some systems, but not others */
#endif
case EWOULDBLOCK:
fprintf(stderr, "would block\n");
return WOLFSSL_CBIO_ERR_WANT_READ;
case ECONNRESET:
fprintf(stderr, "connection reset\n");
return WOLFSSL_CBIO_ERR_CONN_RST;
case EINTR:
fprintf(stderr, "socket interrupted\n");
return WOLFSSL_CBIO_ERR_ISR;
case EPIPE:
fprintf(stderr, "socket EPIPE\n");
return WOLFSSL_CBIO_ERR_CONN_CLOSE;
default:
fprintf(stderr, "general error\n");
return WOLFSSL_CBIO_ERR_GENERAL;
}
}
else if (sent == 0) {
printf("Connection closed\n");
return 0;
}
#ifdef DEBUG_WOLFTPM
/* successful send */
printf("SockIOSend: sent %d bytes to %d\n", sz, sockCtx->fd);
#endif
return sent;
}
static int SetupSocketAndListen(SockIoCbCtx* sockIoCtx, word32 port)
{
struct sockaddr_in servAddr;
int optval = 1;
/* Setup server address */
memset(&servAddr, 0, sizeof(servAddr));
servAddr.sin_family = AF_INET;
servAddr.sin_port = htons(port);
servAddr.sin_addr.s_addr = INADDR_ANY;
/* Create a socket that uses an Internet IPv4 address,
* Sets the socket to be stream based (TCP),
* 0 means choose the default protocol. */
if ((sockIoCtx->listenFd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "ERROR: failed to create the socket\n");
return -1;
}
/* allow reuse */
if (setsockopt(sockIoCtx->listenFd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) == -1) {
printf("setsockopt SO_REUSEADDR failed\n");
return -1;
}
/* Connect to the server */
if (bind(sockIoCtx->listenFd, (struct sockaddr*)&servAddr,
sizeof(servAddr)) == -1) {
fprintf(stderr, "ERROR: failed to bind\n");
return -1;
}
if (listen(sockIoCtx->listenFd, 5) != 0) {
fprintf(stderr, "ERROR: failed to listen\n");
return -1;
}
return 0;
}
static int SocketWaitClient(SockIoCbCtx* sockIoCtx)
{
int connd;
struct sockaddr_in clientAddr;
socklen_t size = sizeof(clientAddr);
if ((connd = accept(sockIoCtx->listenFd, (struct sockaddr*)&clientAddr, &size)) == -1) {
fprintf(stderr, "ERROR: failed to accept the connection\n\n");
return -1;
}
sockIoCtx->fd = connd;
return 0;
}
static void CloseAndCleanupSocket(SockIoCbCtx* sockIoCtx)
{
if (sockIoCtx->fd != -1) {
close(sockIoCtx->fd);
sockIoCtx->fd = -1;
}
if (sockIoCtx->listenFd != -1) {
close(sockIoCtx->listenFd);
sockIoCtx->listenFd = -1;
}
}
/******************************************************************************/
/* --- END Socket IO Callbacks --- */
/******************************************************************************/
static int myVerify(int preverify, WOLFSSL_X509_STORE_CTX* store)
{
char buffer[WOLFSSL_MAX_ERROR_SZ];
(void)preverify;
/* Verify Callback Arguments:
* preverify: 1=Verify Okay, 0=Failure
* store->current_cert: Current WOLFSSL_X509 object (only with OPENSSL_EXTRA)
* store->error_depth: Current Index
* store->domain: Subject CN as string (null term)
* store->totalCerts: Number of certs presented by peer
* store->certs[i]: A `WOLFSSL_BUFFER_INFO` with plain DER for each cert
* store->store: WOLFSSL_X509_STORE with CA cert chain
* store->store->cm: WOLFSSL_CERT_MANAGER
* store->ex_data: The WOLFSSL object pointer
*/
printf("In verification callback, error = %d, %s\n", store->error,
wolfSSL_ERR_error_string(store->error, buffer));
printf("\tPeer certs: %d\n", store->totalCerts);
printf("\tSubject's domain name at %d is %s\n", store->error_depth, store->domain);
printf("\tAllowing to continue anyway (shouldn't do this)\n");
/* A non-zero return code indicates failure override */
return 1;
}
static int myTpmCheckKey(wc_CryptoInfo* info, TpmCryptoDevCtx* ctx)
{
int ret = 0;
#ifndef NO_RSA
if (info && info->pk.type == WC_PK_TYPE_RSA) {
byte e[sizeof(word32)], e2[sizeof(word32)];
byte n[WOLFTPM2_WRAP_RSA_KEY_BITS/8], n2[WOLFTPM2_WRAP_RSA_KEY_BITS/8];
word32 eSz = sizeof(e), e2Sz = sizeof(e);
word32 nSz = sizeof(n), n2Sz = sizeof(n);
RsaKey rsakey;
word32 idx = 0;
/* export the raw public RSA portion */
ret = wc_RsaFlattenPublicKey(info->pk.rsa.key, e, &eSz, n, &nSz);
if (ret == 0) {
/* load the modulus for the dummy key */
ret = wc_InitRsaKey(&rsakey, NULL);
if (ret == 0) {
ret = wc_RsaPrivateKeyDecode(DUMMY_RSA_KEY, &idx, &rsakey,
(word32)sizeof(DUMMY_RSA_KEY));
if (ret == 0) {
ret = wc_RsaFlattenPublicKey(&rsakey, e2, &e2Sz, n2, &n2Sz);
}
wc_FreeRsaKey(&rsakey);
}
}
if (ret == 0 && XMEMCMP(n, n2, nSz) == 0) {
#ifdef DEBUG_WOLFTPM
printf("Detected dummy key, so using TPM RSA key handle\n");
#endif
ret = 1;
}
}
#endif
#if defined(HAVE_ECC)
if (info && info->pk.type == WC_PK_TYPE_ECDSA_SIGN) {
byte qx[WOLFTPM2_WRAP_ECC_KEY_BITS/8], qx2[WOLFTPM2_WRAP_ECC_KEY_BITS/8];
byte qy[WOLFTPM2_WRAP_ECC_KEY_BITS/8], qy2[WOLFTPM2_WRAP_ECC_KEY_BITS/8];
word32 qxSz = sizeof(qx), qx2Sz = sizeof(qx2);
word32 qySz = sizeof(qy), qy2Sz = sizeof(qy2);
ecc_key eccKey;
word32 idx = 0;
/* export the raw public ECC portion */
ret = wc_ecc_export_public_raw(info->pk.eccsign.key, qx, &qxSz, qy, &qySz);
if (ret == 0) {
/* load the ECC public x/y for the dummy key */
ret = wc_ecc_init(&eccKey);
if (ret == 0) {
ret = wc_EccPrivateKeyDecode(DUMMY_ECC_KEY, &idx, &eccKey,
(word32)sizeof(DUMMY_ECC_KEY));
if (ret == 0) {
ret = wc_ecc_export_public_raw(&eccKey, qx2, &qx2Sz, qy2, &qy2Sz);
}
wc_ecc_free(&eccKey);
}
}
if (ret == 0 && XMEMCMP(qx, qx2, qxSz) == 0 &&
XMEMCMP(qy, qy2, qySz) == 0) {
#ifdef DEBUG_WOLFTPM
printf("Detected dummy key, so using TPM ECC key handle\n");
#endif
ret = 1;
}
}
#endif
(void)info;
(void)ctx;
/* non-zero return code means its a "dummy" key (not valid) and the
provided TPM handle will be used, not the wolf public key info */
return ret;
}
/******************************************************************************/
/* --- BEGIN TLS SERVER Example -- */
/******************************************************************************/
#define MAX_MSG_SZ 1024
int TPM2_TLS_Server(void* userCtx)
{
int rc;
WOLFTPM2_DEV dev;
WOLFTPM2_KEY storageKey;
#ifndef NO_RSA
WOLFTPM2_KEY rsaKey;
RsaKey wolfRsaKey;
#endif
#ifdef HAVE_ECC
WOLFTPM2_KEY eccKey;
ecc_key wolfEccKey;
#endif
TPMT_PUBLIC publicTemplate;
TpmCryptoDevCtx tpmCtx;
SockIoCbCtx sockIoCtx;
int tpmDevId;
WOLFSSL_CTX* ctx = NULL;
WOLFSSL* ssl = NULL;
const char webServerMsg[] =
"HTTP/1.1 200 OK\n"
"Content-Type: text/html\n"
"Connection: close\n"
"\n"
"<html>\n"
"<head>\n"
"<title>Welcome to wolfSSL!</title>\n"
"</head>\n"
"<body>\n"
"<p>wolfSSL has successfully performed handshake!</p>\n"
"</body>\n"
"</html>\n";
char msg[MAX_MSG_SZ];
int msgSz = 0;
/* initialize variables */
XMEMSET(&sockIoCtx, 0, sizeof(sockIoCtx));
sockIoCtx.fd = -1;
printf("TPM2 TLS Server Example\n");
#ifdef DEBUG_WOLFSSL
wolfSSL_Debugging_ON();
#endif
wolfSSL_Init();
/* Init the TPM2 device */
rc = wolfTPM2_Init(&dev, TPM2_IoCb, userCtx);
if (rc != 0) {
wolfSSL_Cleanup();
return rc;
}
/* Setup the wolf crypto device callback */
#ifndef NO_RSA
XMEMSET(&wolfRsaKey, 0, sizeof(wolfRsaKey));
tpmCtx.rsaKey = &rsaKey;
#endif
#ifdef HAVE_ECC
XMEMSET(&wolfEccKey, 0, sizeof(wolfEccKey));
tpmCtx.eccKey = &eccKey;
#endif
tpmCtx.checkKeyCb = myTpmCheckKey;
rc = wolfTPM2_SetCryptoDevCb(&dev, wolfTPM2_CryptoDevCb, &tpmCtx, &tpmDevId);
if (rc != 0) goto exit;
/* See if primary storage key already exists */
rc = wolfTPM2_ReadPublicKey(&dev, &storageKey,
TPM2_DEMO_STORAGE_KEY_HANDLE);
if (rc != 0) {
/* Create primary storage key */
rc = wolfTPM2_GetKeyTemplate_RSA(&publicTemplate,
TPMA_OBJECT_fixedTPM | TPMA_OBJECT_fixedParent |
TPMA_OBJECT_sensitiveDataOrigin | TPMA_OBJECT_userWithAuth |
TPMA_OBJECT_restricted | TPMA_OBJECT_decrypt | TPMA_OBJECT_noDA);
if (rc != 0) goto exit;
rc = wolfTPM2_CreatePrimaryKey(&dev, &storageKey, TPM_RH_OWNER,
&publicTemplate, (byte*)gStorageKeyAuth, sizeof(gStorageKeyAuth)-1);
if (rc != 0) goto exit;
/* Move this key into persistent storage */
rc = wolfTPM2_NVStoreKey(&dev, TPM_RH_OWNER, &storageKey,
TPM2_DEMO_STORAGE_KEY_HANDLE);
if (rc != 0) goto exit;
}
else {
/* specify auth password for storage key */
storageKey.handle.auth.size = sizeof(gStorageKeyAuth)-1;
XMEMCPY(storageKey.handle.auth.buffer, gStorageKeyAuth,
storageKey.handle.auth.size);
}
#ifndef NO_RSA
/* Create/Load RSA key for TLS authentication */
rc = wolfTPM2_ReadPublicKey(&dev, &rsaKey, TPM2_DEMO_RSA_KEY_HANDLE);
if (rc != 0) {
rc = wolfTPM2_GetKeyTemplate_RSA(&publicTemplate,
TPMA_OBJECT_sensitiveDataOrigin | TPMA_OBJECT_userWithAuth |
TPMA_OBJECT_decrypt | TPMA_OBJECT_sign | TPMA_OBJECT_noDA);
if (rc != 0) goto exit;
rc = wolfTPM2_CreateAndLoadKey(&dev, &rsaKey, &storageKey.handle,
&publicTemplate, (byte*)gKeyAuth, sizeof(gKeyAuth)-1);
if (rc != 0) goto exit;
/* Move this key into persistent storage */
rc = wolfTPM2_NVStoreKey(&dev, TPM_RH_OWNER, &rsaKey,
TPM2_DEMO_RSA_KEY_HANDLE);
if (rc != 0) goto exit;
}
else {
/* specify auth password for rsa key */
rsaKey.handle.auth.size = sizeof(gKeyAuth)-1;
XMEMCPY(rsaKey.handle.auth.buffer, gKeyAuth, rsaKey.handle.auth.size);
}
/* setup wolf RSA key with TPM deviceID, so crypto callbacks are used */
rc = wc_InitRsaKey_ex(&wolfRsaKey, NULL, tpmDevId);
if (rc != 0) goto exit;
/* load public portion of key into wolf RSA Key */
rc = wolfTPM2_RsaKey_TpmToWolf(&dev, &rsaKey, &wolfRsaKey);
if (rc != 0) goto exit;
#endif /* !NO_RSA */
#ifdef HAVE_ECC
/* Create/Load ECC key for TLS authentication */
rc = wolfTPM2_ReadPublicKey(&dev, &eccKey, TPM2_DEMO_ECC_KEY_HANDLE);
if (rc != 0) {
rc = wolfTPM2_GetKeyTemplate_ECC(&publicTemplate,
TPMA_OBJECT_sensitiveDataOrigin | TPMA_OBJECT_userWithAuth |
TPMA_OBJECT_sign | TPMA_OBJECT_noDA,
TPM_ECC_NIST_P256, TPM_ALG_ECDSA);
if (rc != 0) goto exit;
rc = wolfTPM2_CreateAndLoadKey(&dev, &eccKey, &storageKey.handle,
&publicTemplate, (byte*)gKeyAuth, sizeof(gKeyAuth)-1);
if (rc != 0) goto exit;
/* Move this key into persistent storage */
rc = wolfTPM2_NVStoreKey(&dev, TPM_RH_OWNER, &eccKey,
TPM2_DEMO_ECC_KEY_HANDLE);
if (rc != 0) goto exit;
}
else {
/* specify auth password for ECC key */
eccKey.handle.auth.size = sizeof(gKeyAuth)-1;
XMEMCPY(eccKey.handle.auth.buffer, gKeyAuth, eccKey.handle.auth.size);
}
/* setup wolf ECC key with TPM deviceID, so crypto callbacks are used */
rc = wc_ecc_init_ex(&wolfEccKey, NULL, tpmDevId);
if (rc != 0) goto exit;
/* load public portion of key into wolf ECC Key */
rc = wolfTPM2_EccKey_TpmToWolf(&dev, &eccKey, &wolfEccKey);
if (rc != 0) goto exit;
#endif /* HAVE_ECC */
/* Setup the WOLFSSL context (factory) */
if ((ctx = wolfSSL_CTX_new(wolfTLSv1_2_server_method())) == NULL) {
rc = MEMORY_E; goto exit;
}
/* Setup IO Callbacks */
wolfSSL_CTX_SetIORecv(ctx, SockIORecv);
wolfSSL_CTX_SetIOSend(ctx, SockIOSend);
/* Server certificate validation */
#if 1
/* skip server cert validation for this test */
wolfSSL_CTX_set_verify(ctx, WOLFSSL_VERIFY_NONE, myVerify);
#else
#ifdef NO_FILESYSTEM
/* example loading from buffer */
#if 0
if (wolfSSL_CTX_load_verify(ctx, ca.buffer, (long)ca.size,
WOLFSSL_FILETYPE_ASN1) != WOLFSSL_SUCCESS) }
goto exit;
}
#endif
#else
/* Load CA Certificate */
if (wolfSSL_CTX_load_verify_locations(ctx, "./certs/wolfssl-website-ca.pem",
0) != WOLFSSL_SUCCESS) {
printf("Error loading wolfSSL website certs\n");
goto exit;
}
#endif /* !NO_FILESYSTEM */
#endif
#ifdef NO_FILESYSTEM
/* example loading from buffer */
#if 0
if (wolfSSL_CTX_use_certificate_buffer(ctx, cert.buffer, (long)cert.size,
WOLFSSL_FILETYPE_ASN1) != WOLFSSL_SUCCESS) {
goto exit;
}
#endif
#else
/* Server certificate */
#if !defined(NO_RSA) && !defined(USE_TLS_ECC)
printf("Loading RSA certificate and dummy key\n");
if ((rc = wolfSSL_CTX_use_certificate_file(ctx, "./certs/server-rsa-cert.pem",
WOLFSSL_FILETYPE_PEM)) != WOLFSSL_SUCCESS) {
printf("Error loading RSA client cert\n");
goto exit;
}
/* Private key is on TPM and crypto dev callbacks are used */
/* TLS server requires some dummy key loaded (workaround) */
if (wolfSSL_CTX_use_PrivateKey_buffer(ctx, DUMMY_RSA_KEY,
sizeof(DUMMY_RSA_KEY), WOLFSSL_FILETYPE_ASN1) != WOLFSSL_SUCCESS) {
printf("Failed to set key!\r\n");
goto exit;
}
#elif defined(HAVE_ECC)
printf("Loading ECC certificate and fake key\n");
if ((rc = wolfSSL_CTX_use_certificate_file(ctx, "./certs/server-ecc-cert.pem",
WOLFSSL_FILETYPE_PEM)) != WOLFSSL_SUCCESS) {
printf("Error loading ECC client cert\n");
goto exit;
}
/* Private key is on TPM and crypto dev callbacks are used */
/* TLS server requires some dummy key loaded (workaround) */
if (wolfSSL_CTX_use_PrivateKey_buffer(ctx, DUMMY_ECC_KEY,
sizeof(DUMMY_ECC_KEY), WOLFSSL_FILETYPE_ASN1) != WOLFSSL_SUCCESS) {
printf("Failed to set key!\r\n");
goto exit;
}
#endif
#endif /* !NO_FILESYSTEM */
#if 0
/* Optionally choose the cipher suite */
rc = wolfSSL_CTX_set_cipher_list(ctx, "ECDHE-RSA-AES128-GCM-SHA256");
if (rc != WOLFSSL_SUCCESS) {
goto exit;
}
#endif
/* Create wolfSSL object/session */
if ((ssl = wolfSSL_new(ctx)) == NULL) {
rc = wolfSSL_get_error(ssl, 0);
goto exit;
}
/* Setup DevID */
wolfSSL_SetDevId(ssl, tpmDevId);
/* Setup socket and connection */
rc = SetupSocketAndListen(&sockIoCtx, TLS_PORT);
if (rc != 0) goto exit;
/* Setup read/write callback contexts */
wolfSSL_SetIOReadCtx(ssl, &sockIoCtx);
wolfSSL_SetIOWriteCtx(ssl, &sockIoCtx);
/* Accept client connections */
rc = SocketWaitClient(&sockIoCtx);
if (rc != 0) goto exit;
/* perform accept */
do {
rc = wolfSSL_accept(ssl);
if (rc != WOLFSSL_SUCCESS) {
rc = wolfSSL_get_error(ssl, 0);
}
} while (rc == WOLFSSL_ERROR_WANT_READ || rc == WOLFSSL_ERROR_WANT_WRITE);
if (rc != WOLFSSL_SUCCESS) {
goto exit;
}
/* perform read */
do {
rc = wolfSSL_read(ssl, msg, sizeof(msg) - 1);
if (rc < 0) {
rc = wolfSSL_get_error(ssl, 0);
}
else {
/* null terminate */
msg[rc] = '\0';
msgSz = rc;
rc = 0;
}
} while (rc == WOLFSSL_ERROR_WANT_READ);
printf("Read (%d): %s\n", msgSz, msg);
/* perform write */
msgSz = sizeof(webServerMsg);
printf("Write (%d): %s\n", msgSz, webServerMsg);
do {
rc = wolfSSL_write(ssl, webServerMsg, msgSz);
if (rc != msgSz) {
rc = wolfSSL_get_error(ssl, 0);
}
} while (rc == WOLFSSL_ERROR_WANT_WRITE);
rc = 0; /* success */
exit:
if (rc != 0) {
printf("Failure %d (0x%x): %s\n", rc, rc, wolfTPM2_GetRCString(rc));
}
wolfSSL_shutdown(ssl);
CloseAndCleanupSocket(&sockIoCtx);
wolfSSL_free(ssl);
wolfSSL_CTX_free(ctx);
#ifndef NO_RSA
wc_FreeRsaKey(&wolfRsaKey);
wolfTPM2_UnloadHandle(&dev, &rsaKey.handle);
#endif
#ifdef HAVE_ECC
wc_ecc_free(&wolfEccKey);
wolfTPM2_UnloadHandle(&dev, &eccKey.handle);
#endif
wolfTPM2_Cleanup(&dev);
wolfSSL_Cleanup();
return rc;
}
/******************************************************************************/
/* --- END TLS Server Example -- */
/******************************************************************************/
#endif /* !WOLFTPM2_NO_WRAPPER && WOLF_CRYPTO_DEV */
#ifndef NO_MAIN_DRIVER
int main(void)
{
int rc = -1;
#if !defined(WOLFTPM2_NO_WRAPPER) && defined(WOLF_CRYPTO_DEV) && \
!defined(WOLFTPM2_NO_WOLFCRYPT)
rc = TPM2_TLS_Server(NULL);
#else
printf("Wrapper/CryptoDev code not compiled in\n");
printf("Build wolfssl with ./configure --enable-cryptodev\n");
#endif
return rc;
}
#endif /* !NO_MAIN_DRIVER */
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