static int32 initializeResumedHandshake(sslConn_t *clnConn, sslConn_t *svrConn,
testCipherSpec_t cipherSuite)
{
sslSessionId_t *sessionId;
#ifdef ENABLE_PERF_TIMING
psTime_t start, end;
#endif /* ENABLE_PERF_TIMING */
sessionId = clnConn->ssl->sid;
matrixSslDeleteSession(clnConn->ssl);
#ifdef ENABLE_PERF_TIMING
clnConn->runningTime = 0;
psGetTime(&start);
#endif /* ENABLE_PERF_TIMING */
if (matrixSslNewClientSession(&clnConn->ssl, clnConn->keys, sessionId,
cipherSuite.cipherId, clnCertChecker, NULL, NULL) < 0) {
return PS_FAILURE;
}
#ifdef ENABLE_PERF_TIMING
psGetTime(&end);
clnConn->runningTime += psDiffMsecs(start, end);
#endif /* ENABLE_PERF_TIMING */
matrixSslDeleteSession(svrConn->ssl);
#ifdef ENABLE_PERF_TIMING
svrConn->runningTime = 0;
psGetTime(&start);
#endif /* ENABLE_PERF_TIMING */
if (matrixSslNewServerSession(&svrConn->ssl, svrConn->keys, NULL) < 0) {
return PS_FAILURE;
}
#ifdef ENABLE_PERF_TIMING
psGetTime(&end);
svrConn->runningTime += psDiffMsecs(start, end);
#endif /* ENABLE_PERF_TIMING */
return PS_SUCCESS;
}
static int32 initializeClientAuthHandshake(sslConn_t *clnConn,
sslConn_t *svrConn, uint32 cipherSuite, sslSessionId_t *sid)
{
#ifdef ENABLE_PERF_TIMING
psTime_t start, end;
#endif /* ENABLE_PERF_TIMING */
matrixSslDeleteSession(clnConn->ssl);
#ifdef ENABLE_PERF_TIMING
clnConn->runningTime = 0;
psGetTime(&start);
#endif /* ENABLE_PERF_TIMING */
if (matrixSslNewClientSession(&clnConn->ssl, clnConn->keys, sid,
cipherSuite, clnCertChecker, NULL, NULL, newSessionFlag) < 0) {
return PS_FAILURE;
}
#ifdef ENABLE_PERF_TIMING
psGetTime(&end);
clnConn->runningTime += psDiffMsecs(start, end);
#endif /* ENABLE_PERF_TIMING */
matrixSslDeleteSession(svrConn->ssl);
#ifdef ENABLE_PERF_TIMING
svrConn->runningTime = 0;
psGetTime(&start);
#endif /* ENABLE_PERF_TIMING */
if (matrixSslNewServerSession(&svrConn->ssl, svrConn->keys, svrCertChecker,
newSessionFlag) < 0) {
return PS_FAILURE;
}
#ifdef ENABLE_PERF_TIMING
psGetTime(&end);
svrConn->runningTime += psDiffMsecs(start, end);
#endif /* ENABLE_PERF_TIMING */
return PS_SUCCESS;
}
int matrixssl_freebuf(int fp)
{
int i = 0;
for (i = 0; i < MAX_MATRIXSSL_SESSIONS; i++) {
if (bufs[i]->fp == fp) {
matrixSslDeleteSession(bufs[i]->ssl);
free(bufs[i]->ssl_recv_buf);
free(bufs[i]->ssl_send_buf);
free(bufs[i]);
bufs[i] = NULL;
no_matrixssl_sessions--;
return 0;
}
}
return -1;
}
void SSL_free(SSL * ssl) {
syslog(LOG_DEBUG, "Matrix SSL_Free()");
if (ssl->ssl)
matrixSslDeleteSession(ssl->ssl);
ssl->ssl = 0;
if (ssl->insock.buf) {
free(ssl->insock.buf);
ssl->insock.buf = 0;
}
if (ssl->outsock.buf) {
free(ssl->outsock.buf);
ssl->outsock.buf = 0;
}
if (ssl->inbuf.buf) {
free(ssl->inbuf.buf);
ssl->inbuf.buf = 0;
}
free(ssl);
}
void SSL_free(SSL * ssl) {
log_dbg("Matrix SSL_Free()");
if (ssl->ssl)
matrixSslDeleteSession(ssl->ssl);
ssl->ssl = 0;
if (ssl->insock.buf) {
free(ssl->insock.buf);
ssl->insock.buf = 0;
}
if (ssl->outsock.buf) {
free(ssl->outsock.buf);
ssl->outsock.buf = 0;
}
if (ssl->inbuf.buf) {
free(ssl->inbuf.buf);
ssl->inbuf.buf = 0;
}
free(ssl);
}
/*
Close a seesion that was opened with sslAccept or sslConnect and
free the insock and outsock buffers
*/
void sslFreeConnection(sslConn_t **cpp)
{
sslConn_t *conn;
conn = *cpp;
matrixSslDeleteSession(conn->ssl);
conn->ssl = NULL;
if (conn->insock.buf) {
free(conn->insock.buf);
conn->insock.buf = NULL;
}
if (conn->outsock.buf) {
free(conn->outsock.buf);
conn->outsock.buf = NULL;
}
if (conn->inbuf.buf) {
free(conn->inbuf.buf);
conn->inbuf.buf = NULL;
}
free(conn);
*cpp = NULL;
}
/*
Create a new server SSL session
This creates internal SSL buffers and cipher structures
Internal SSL state is set to expect an incoming 'HelloRequest'
Return MATRIXSSL_SUCCESS on success
< 0 on error
*/
int32 matrixSslNewServerSession(ssl_t **ssl, sslKeys_t *keys,
int32 (*certCb)(ssl_t *ssl, psX509Cert_t *cert, int32 alert),
int32 flags)
{
ssl_t *lssl;
int32 lflags = SSL_FLAGS_SERVER;
if (!ssl) {
return PS_ARG_FAIL;
}
lflags |= flags;
*ssl = NULL;
lssl = NULL;
#ifdef USE_CLIENT_AUTH
if (certCb) {
lflags |= SSL_FLAGS_CLIENT_AUTH;
if (matrixSslNewSession(&lssl, keys, NULL, lflags) < 0) {
goto NEW_SVR_ERROR;
}
matrixSslSetCertValidator(lssl, (sslCertCb_t)certCb);
} else if (matrixSslNewSession(&lssl, keys, NULL, lflags) < 0) {
goto NEW_SVR_ERROR;
}
#else
psAssert(certCb == NULL);
if (matrixSslNewSession(&lssl, keys, NULL, lflags) < 0) {
goto NEW_SVR_ERROR;
}
#endif /* USE_CLIENT_AUTH */
lssl->maxPtFrag = SSL_MAX_PLAINTEXT_LEN;
*ssl = lssl;
return MATRIXSSL_SUCCESS;
NEW_SVR_ERROR:
if (lssl) matrixSslDeleteSession(lssl);
return PS_FAILURE;
}
/*
Close a socket and free associated SSL context and buffers
*/
static void closeConn(httpConn_t *cp, int32 reason)
{
unsigned char *buf;
int32 len;
DLListRemove(&cp->List);
/* Quick attempt to send a closure alert, don't worry about failure */
if (matrixSslEncodeClosureAlert(cp->ssl) >= 0) {
if ((len = matrixSslGetOutdata(cp->ssl, &buf)) > 0) {
if ((len = send(cp->fd, buf, len, MSG_DONTWAIT)) > 0) {
matrixSslSentData(cp->ssl, len);
}
}
}
if (cp->parsebuf != NULL) {
psAssert(cp->parsebuflen > 0);
free(cp->parsebuf);
cp->parsebuflen = 0;
}
matrixSslDeleteSession(cp->ssl);
#ifdef USE_SERVER_NAME_INDICATION
if (sni_keys) {
matrixSslDeleteKeys(sni_keys);
sni_keys = NULL;
}
#endif
if (cp->fd != INVALID_SOCKET) {
close(cp->fd);
}
if (reason >= 0) {
/* _psTraceInt("=== Closing Client %d ===\n", cp->fd); */
} else {
_psTraceInt("=== Closing Client %d on Error ===\n", cp->fd);
}
free(cp);
}
/*
Close a socket and free associated SSL context and buffers
An attempt is made to send a closure alert
*/
static void closeConn(ssl_t *ssl, SOCKET fd)
{
unsigned char *buf;
int32 len;
/* Set the socket to non-blocking to flush remaining data */
#ifdef POSIX
fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
#elif WIN32
len = 1; /* 1 for non-block, 0 for block */
ioctlsocket(fd, FIONBIO, &len);
#endif
/* Quick attempt to send a closure alert, don't worry about failure */
if (matrixSslEncodeClosureAlert(ssl) >= 0) {
if ((len = matrixSslGetOutdata(ssl, &buf)) > 0) {
if ((len = send(fd, buf, len, MSG_DONTWAIT)) > 0) {
matrixSslSentData(ssl, len);
}
}
}
matrixSslDeleteSession(ssl);
if (fd != INVALID_SOCKET) close(fd);
}
int main(int argc, char **argv)
{
int32 id;
sslConn_t *svrConn, *clnConn;
#ifdef ENABLE_PERF_TIMING
int32 perfIter;
uint32 clnTime, svrTime;
#endif /* ENABLE_PERF_TIMING */
if (matrixSslOpen() < 0) {
fprintf(stderr, "matrixSslOpen failed, exiting...");
}
svrConn = psMalloc(PEERSEC_NO_POOL, sizeof(sslConn_t));
clnConn = psMalloc(PEERSEC_NO_POOL, sizeof(sslConn_t));
memset(svrConn, 0, sizeof(sslConn_t));
memset(clnConn, 0, sizeof(sslConn_t));
for (id = 0; ciphers[id].cipherId > 0; id++) {
matrixSslInitSessionId(clientSessionId);
_psTraceStr("Testing %s suite\n", ciphers[id].name);
/*
Standard Handshake
*/
_psTrace(" Standard handshake test\n");
#ifdef ENABLE_PERF_TIMING
/*
Each matrixSsl call in the handshake is wrapped by a timer. The
data exchange phase is not being included in the time
*/
clnTime = svrTime = 0;
for (perfIter = 0; perfIter < CONN_ITER; perfIter++) {
#endif /* ENABLE_PERF_TIMING */
if (initializeHandshake(clnConn, svrConn, ciphers[id],
&clientSessionId) < 0) {
_psTrace(" FAILED: initializing Standard handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Standard handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Standard handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
#ifdef ENABLE_PERF_TIMING
clnTime += clnConn->runningTime;
svrTime += svrConn->runningTime;
/* Have to reset conn for full handshake... except last time through */
if (perfIter + 1 != CONN_ITER) {
matrixSslDeleteSession(clnConn->ssl);
matrixSslDeleteSession(svrConn->ssl);
matrixSslInitSessionId(clientSessionId);
}
} /* iteration loop close */
_psTraceInt("CLIENT: %d " TIME_UNITS, (int32)clnTime/CONN_ITER);
_psTraceInt("SERVER: %d " TIME_UNITS, (int32)svrTime/CONN_ITER);
// _psTrace("Press any key to continue tests");
_psTrace("\n==========\n");
// getchar();
#endif /* ENABLE_PERF_TIMING */
#ifdef SSL_REHANDSHAKES_ENABLED
/*
Re-Handshake (full handshake over existing connection)
*/
_psTrace(" Re-handshake test (client-initiated)\n");
if (initializeReHandshake(clnConn, svrConn, ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: initializing Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
#else
_psTrace(" Re-handshake tests are disabled (ENABLE_SECURE_REHANDSHAKES)\n");
#endif
/*
Resumed handshake (fast handshake over new connection)
*/
_psTrace(" Resumed handshake test (new connection)\n");
#ifdef ENABLE_PERF_TIMING
clnTime = svrTime = 0;
for (perfIter = 0; perfIter < CONN_ITER; perfIter++) {
#endif /* ENABLE_PERF_TIMING */
if (initializeResumedHandshake(clnConn, svrConn,
ciphers[id]) < 0) {
_psTrace(" FAILED: initializing Resumed handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Resumed handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Resumed handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
#ifdef ENABLE_PERF_TIMING
clnTime += clnConn->runningTime;
svrTime += svrConn->runningTime;
/* Have to reset conn for full handshake */
} /* iteration loop */
_psTraceInt("CLIENT: %d " TIME_UNITS, (int32)clnTime/CONN_ITER);
_psTraceInt("SERVER: %d " TIME_UNITS, (int32)svrTime/CONN_ITER);
_psTrace("Press any key to continue tests");
_psTrace("\n==========\n");
// getchar();
#endif /* ENABLE_PERF_TIMING */
#ifdef SSL_REHANDSHAKES_ENABLED
/*
Re-handshake initiated by server (full handshake over existing conn)
*/
_psTrace(" Re-handshake test (server initiated)\n");
if (initializeServerInitiatedReHandshake(clnConn, svrConn,
ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: initializing Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(svrConn, clnConn) < 0) {
_psTrace(" FAILED: Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
/*
Resumed re-handshake (fast handshake over existing connection)
*/
_psTrace(" Resumed Re-handshake test (client initiated)\n");
if (initializeResumedReHandshake(clnConn, svrConn,
ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: initializing Resumed Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Resumed Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Resumed Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
/*
Resumed re-handshake initiated by server (fast handshake over conn)
*/
_psTrace(" Resumed Re-handshake test (server initiated)\n");
if (initializeServerInitiatedResumedReHandshake(clnConn, svrConn,
ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: initializing Resumed Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(svrConn, clnConn) < 0) {
_psTrace(" FAILED: Resumed Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Resumed Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
/*
Re-handshaking with "upgraded" parameters
*/
_psTrace(" Change cert callback Re-handshake test\n");
if (initializeUpgradeCertCbackReHandshake(clnConn, svrConn,
ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: init upgrade certCback Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Upgrade cert callback Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Upgrade cert callback Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
/*
Upgraded keys
*/
_psTrace(" Change keys Re-handshake test\n");
if (initializeUpgradeKeysReHandshake(clnConn, svrConn,
ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: init upgrade keys Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Upgrade keys Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Upgrade keys Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
/*
Change cipher spec test. Changing to a hardcoded RSA suite so this
will not work on suites that don't have RSA material loaded
*/
if (ciphers[id].rsa == 1) {
_psTrace(" Change cipher suite Re-handshake test\n");
if (initializeChangeCipherReHandshake(clnConn, svrConn,
ciphers[id].cipherId) < 0) {
_psTrace(" FAILED: init change cipher Re-handshake\n");
goto LBL_FREE;
}
if (performHandshake(clnConn, svrConn) < 0) {
_psTrace(" FAILED: Change cipher suite Re-handshake\n");
goto LBL_FREE;
} else {
testTrace(" PASSED: Change cipher suite Re-handshake");
if (exchangeAppData(clnConn, svrConn) < 0) {
_psTrace(" but FAILED to exchange application data\n");
} else {
testTrace("\n");
}
}
}
#endif /* !SSL_REHANDSHAKES_ENABLED */
LBL_FREE:
freeSessionAndConnection(svrConn);
freeSessionAndConnection(clnConn);
}
psFree(svrConn);
psFree(clnConn);
matrixSslClose();
#ifdef WIN32
_psTrace("Press any key to close");
getchar();
#endif
return PS_SUCCESS;
}
/*
Make a secure HTTP request to a defined IP and port
Connection is made in blocking socket mode
The connection is considered successful if the SSL/TLS session is
negotiated successfully, a request is sent, and a HTTP response is received.
*/
static int32 httpsClientConnection(sslKeys_t *keys, sslSessionId_t *sid)
{
int32 rc, transferred, len, complete;
ssl_t *ssl;
unsigned char *buf;
httpConn_t cp;
SOCKET fd;
complete = 0;
memset(&cp, 0x0, sizeof(httpConn_t));
fd = socketConnect(HTTPS_IP, HTTPS_PORT, &rc);
if (fd == INVALID_SOCKET || rc != PS_SUCCESS) {
_psTraceInt("Connect failed: %d. Exiting\n", rc);
return PS_PLATFORM_FAIL;
}
rc = matrixSslNewClientSession(&ssl, keys, sid, 0, certCb, NULL, NULL);
if (rc != MATRIXSSL_REQUEST_SEND) {
_psTraceInt("New Client Session Failed: %d. Exiting\n", rc);
close(fd);
return PS_ARG_FAIL;
}
WRITE_MORE:
while ((len = matrixSslGetOutdata(ssl, &buf)) > 0) {
transferred = send(fd, buf, len, 0);
if (transferred <= 0) {
goto L_CLOSE_ERR;
} else {
/* Indicate that we've written > 0 bytes of data */
if ((rc = matrixSslSentData(ssl, transferred)) < 0) {
goto L_CLOSE_ERR;
}
if (rc == MATRIXSSL_REQUEST_CLOSE) {
closeConn(ssl, fd);
return MATRIXSSL_SUCCESS;
}
if (rc == MATRIXSSL_HANDSHAKE_COMPLETE) {
/* If we sent the Finished SSL message, initiate the HTTP req */
/* (This occurs on a resumption handshake) */
if (httpWriteRequest(ssl) < 0) {
goto L_CLOSE_ERR;
}
goto WRITE_MORE;
}
/* SSL_REQUEST_SEND is handled by loop logic */
}
}
READ_MORE:
if ((len = matrixSslGetReadbuf(ssl, &buf)) <= 0) {
goto L_CLOSE_ERR;
}
if ((transferred = recv(fd, buf, len, 0)) < 0) {
goto L_CLOSE_ERR;
}
/* If EOF, remote socket closed. But we haven't received the HTTP response
so we consider it an error in the case of an HTTP client */
if (transferred == 0) {
goto L_CLOSE_ERR;
}
if ((rc = matrixSslReceivedData(ssl, (int32)transferred, &buf,
(uint32*)&len)) < 0) {
goto L_CLOSE_ERR;
}
PROCESS_MORE:
switch (rc) {
case MATRIXSSL_HANDSHAKE_COMPLETE:
#ifdef REHANDSHAKE_TEST
/*
Test rehandshake capabilities of server. If a successful
session resmption rehandshake occurs, this client will be last to
send handshake data and MATRIXSSL_HANDSHAKE_COMPLETE will hit on
the WRITE_MORE handler and httpWriteRequest will occur there.
NOTE: If the server doesn't support session resumption it is
possible to fall into an endless rehandshake loop
*/
if (matrixSslEncodeRehandshake(ssl, NULL, NULL, 0, 0) < 0) {
goto L_CLOSE_ERR;
}
#else
/* We got the Finished SSL message, initiate the HTTP req */
if (httpWriteRequest(ssl) < 0) {
goto L_CLOSE_ERR;
}
#endif
goto WRITE_MORE;
case MATRIXSSL_APP_DATA:
if ((rc = httpBasicParse(&cp, buf, len)) < 0) {
closeConn(ssl, fd);
if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL;
cp.parsebuflen = 0;
return MATRIXSSL_ERROR;
}
if (rc == HTTPS_COMPLETE) {
rc = matrixSslProcessedData(ssl, &buf, (uint32*)&len);
closeConn(ssl, fd);
if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL;
cp.parsebuflen = 0;
if (rc < 0) {
return MATRIXSSL_ERROR;
} else {
if (rc > 0) {
_psTrace("HTTP data parsing not supported, ignoring.\n");
}
_psTrace("SUCCESS: Received HTTP Response\n");
return MATRIXSSL_SUCCESS;
}
}
/* We processed a partial HTTP message */
if ((rc = matrixSslProcessedData(ssl, &buf, (uint32*)&len)) == 0) {
goto READ_MORE;
}
goto PROCESS_MORE;
case MATRIXSSL_REQUEST_SEND:
goto WRITE_MORE;
case MATRIXSSL_REQUEST_RECV:
goto READ_MORE;
case MATRIXSSL_RECEIVED_ALERT:
/* The first byte of the buffer is the level */
/* The second byte is the description */
if (*buf == SSL_ALERT_LEVEL_FATAL) {
psTraceIntInfo("Fatal alert: %d, closing connection.\n",
*(buf + 1));
goto L_CLOSE_ERR;
}
/* Closure alert is normal (and best) way to close */
if (*(buf + 1) == SSL_ALERT_CLOSE_NOTIFY) {
closeConn(ssl, fd);
if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL;
cp.parsebuflen = 0;
return MATRIXSSL_SUCCESS;
}
psTraceIntInfo("Warning alert: %d\n", *(buf + 1));
if ((rc = matrixSslProcessedData(ssl, &buf, (uint32*)&len)) == 0) {
/* No more data in buffer. Might as well read for more. */
goto READ_MORE;
}
goto PROCESS_MORE;
default:
/* If rc <= 0 we fall here */
goto L_CLOSE_ERR;
}
L_CLOSE_ERR:
_psTrace("FAIL: No HTTP Response\n");
matrixSslDeleteSession(ssl);
close(fd);
if (cp.parsebuf) free(cp.parsebuf); cp.parsebuf = NULL;
cp.parsebuflen = 0;
return MATRIXSSL_ERROR;
}
int32_t matrixSslNewClientSession(ssl_t **ssl, const sslKeys_t *keys,
sslSessionId_t *sid,
const uint16_t cipherSpec[], uint8_t cipherSpecLen,
sslCertCb_t certCb,
const char *expectedName, tlsExtension_t *extensions,
sslExtCb_t extCb,
sslSessOpts_t *options)
{
ssl_t *lssl;
psBuf_t tmp;
uint32 len;
int32 rc, i;
if (!ssl) {
return PS_ARG_FAIL;
}
if (cipherSpecLen > 0 && (cipherSpec == NULL || cipherSpec[0] == 0)) {
return PS_ARG_FAIL;
}
if (options == NULL) {
return PS_ARG_FAIL;
}
*ssl = NULL;
lssl = NULL;
/* Give priority to cipher suite if session id is provided and doesn't match */
if (cipherSpec != NULL && cipherSpec[0] != 0 && sid != NULL &&
sid->cipherId != 0) {
rc = 1;
for (i = 0; i < cipherSpecLen; i++) {
if (cipherSpec[i] == sid->cipherId) {
rc = 0;
}
}
if (rc) {
psTraceInfo("Explicit cipher suite will override session cache\n");
memset(sid->id, 0, SSL_MAX_SESSION_ID_SIZE);
memset(sid->masterSecret, 0, SSL_HS_MASTER_SIZE);
sid->cipherId = 0;
}
}
if ((rc = matrixSslNewSession(&lssl, keys, sid, options)) < 0) {
return rc;
}
lssl->userPtr = options->userPtr;
#ifndef USE_ONLY_PSK_CIPHER_SUITE
if (expectedName) {
if (psX509ValidateGeneralName((char*)expectedName) < 0) {
matrixSslDeleteSession(lssl);
return rc;
}
rc = strlen(expectedName);
lssl->expectedName = psMalloc(lssl->sPool, rc + 1);
strcpy(lssl->expectedName, expectedName);
}
if (certCb) {
matrixSslSetCertValidator(lssl, certCb);
}
#endif
if (extCb) {
lssl->extCb = extCb;
}
RETRY_HELLO:
tmp.size = lssl->outsize;
tmp.buf = tmp.start = tmp.end = lssl->outbuf;
if ((rc = matrixSslEncodeClientHello(lssl, &tmp, cipherSpec, cipherSpecLen,
&len, extensions, options)) < 0) {
if (rc == SSL_FULL) {
if ((tmp.buf = psRealloc(lssl->outbuf, len, lssl->bufferPool))
== NULL) {
matrixSslDeleteSession(lssl);
return PS_MEM_FAIL;
}
lssl->outbuf = tmp.buf;
lssl->outsize = len;
goto RETRY_HELLO;
} else {
matrixSslDeleteSession(lssl);
return rc;
}
}
psAssert(tmp.start == tmp.buf);
lssl->outlen = tmp.end - tmp.start;
*ssl = lssl;
return MATRIXSSL_REQUEST_SEND;
}
void child_process(struct spead_client *cl, sslKeys_t *keys)
{
#define BUFF 1000
//#define REPLY "HTTP/1.1 200 OK\nServer: pshr\nConnection: Keep-Alive\nContent-Type: audio/mpeg\nCache-Control: no-cache\nPragma: no-cache\n\n"
#define REPLY "HTTP/1.1 200 OK\nServer: pshr\nConnection: Keep-Alive\nContent-Type: text/plain\nCache-Control: no-cache\nPragma: no-cache\n\nhello world"
#define MODE_CONNECTING 0
#define MODE_SENDING 1
//int bytes, mode = MODE_CONNECTING;
//unsigned char data[BUFF];
unsigned char *data, *res;
uint32 err, len ,rb, wb;
ssl_t *ssl;
//int fd = (-1), initial=1450-300;
data = NULL;
res = NULL;
ssl = NULL;
if (cl == NULL || keys == NULL){
#ifdef DEBUG
fprintf(stderr, "%s: parameter error\n", __func__);
#endif
exit(EXIT_FAILURE);
}
#ifdef DEBUG
fprintf(stderr, "%s: child created with fd[%d]\n", __func__, cl->c_fd);
#endif
err = matrixSslNewServerSession(&ssl, keys, NULL, 0);
if (err != PS_SUCCESS){
#ifdef DEBUG
switch(err){
case PS_ARG_FAIL:
fprintf(stderr, "Bad input function parameter\n");
break;
case PS_FAILURE:
fprintf(stderr, "Internal memory allocation failure\n");
break;
}
#endif
#if 0
matrixSslDeleteKeys(keys);
matrixSslClose();
#endif
exit(EXIT_FAILURE);
}
while(run){
READ_STATE:
len = matrixSslGetReadbuf(ssl, &data);
if (rb < 0){
#ifdef DEBUG
fprintf(stderr, "%s: matrixssl getreadbuf error\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
}
#ifdef DEBUG
fprintf(stderr, "%s: matrixssl getreadbuf rtn [%d]\n", __func__, len);
#endif
rb = read(cl->c_fd, data, len);
if (rb == 0){
#ifdef DEBUG
fprintf(stderr, "%s: read EOF\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
} else if (rb < 0){
#ifdef DEBUG
fprintf(stderr, "%s: read error (%s)\n", __func__, strerror(errno));
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
}
#ifdef DEBUG
fprintf(stderr, "%s: read rtn [%d]\n", __func__, rb);
#endif
rb = matrixSslReceivedData(ssl, rb, &data, &len);
if (rb < 0){
#ifdef DEBUG
fprintf(stderr, "%s: matrixssl receiveddata error\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
} else if (rb == 0){
#ifdef DEBUG
fprintf(stderr, "%s: matrix ssl received 0 bytes (false start?)\n", __func__);
#endif
} else if (rb > 0){
switch(rb){
case MATRIXSSL_REQUEST_SEND:
#ifdef DEBUG
fprintf(stderr, "%s: RS req send\n", __func__);
#endif
goto WRITE_STATE;
break;
case MATRIXSSL_REQUEST_RECV:
#ifdef DEBUG
fprintf(stderr, "%s: RS req recv\n", __func__);
#endif
goto READ_STATE;
break;
case MATRIXSSL_HANDSHAKE_COMPLETE:
#ifdef DEBUG
fprintf(stderr, "%s: RS handshake complete\n", __func__);
#endif
goto READ_STATE;
break;
case MATRIXSSL_RECEIVED_ALERT:
#ifdef DEBUG
fprintf(stderr, "%s: RS rec alert\n", __func__);
#endif
break;
case MATRIXSSL_APP_DATA:
#ifdef DEBUG
fprintf(stderr, "%s: RS app data\n", __func__);
#endif
#ifdef DEBUG
fprintf(stderr, "%s: RS got data [%s]\n", __func__, data);
#endif
/*process client data here*/
res = get_resource_str(data);
if (res == NULL){
#ifdef DEBUG
fprintf(stderr, "%s: NULL RESOURCE\n", __func__);
#endif
run = 0;
}
#ifdef DEBUG
fprintf(stderr, "%s: got resource [%s]\n", __func__, res);
#endif
unsigned char *tbuf;
int32 tbuflen;
tbuflen = matrixSslGetWritebuf(ssl, &tbuf, strlen(REPLY));
if (tbuflen < 0){
#ifdef DEBUG
fprintf(stderr, "%s: matrixssl getwritebuf error\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
}
strncpy((char *) tbuf, REPLY, tbuflen);
if (matrixSslEncodeWritebuf(ssl, strlen((char *) tbuf)) < 0){
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
}
matrixSslEncodeClosureAlert(ssl);
rb = matrixSslProcessedData(ssl, &data, &len);
#ifdef DEBUG
fprintf(stderr, "%s: processed data rtn [%d]\n", __func__, rb);
#endif
goto WRITE_STATE;
break;
}
}
WRITE_STATE:
len = matrixSslGetOutdata(ssl, &data);
if (len < 0){
#ifdef DEBUG
fprintf(stderr, "%s: matrixssl getoutdata error\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
}
#ifdef DEBUG
fprintf(stderr, "%s: getoutdata rtn [%d]\n", __func__, len);
#endif
wb = write(cl->c_fd, data, len);
if (wb == 0){
#ifdef DEBUG
fprintf(stderr, "%s: write 0\n", __func__);
#endif
goto READ_STATE;
} else if (wb < 0){
#ifdef DEBUG
fprintf(stderr, "%s: write error (%s)\n", __func__, strerror(errno));
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
}
#ifdef DEBUG
fprintf(stderr, "%s: write rtn [%d]\n", __func__, wb);
#endif
wb = matrixSslSentData(ssl, wb);
if (wb < 0) {
#ifdef DEBUG
fprintf(stderr, "%s: matrixssl sentdata error\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
} else if (wb > 0){
switch(wb){
case MATRIXSSL_REQUEST_SEND:
#ifdef DEBUG
fprintf(stderr, "%s: WS req send\n", __func__);
#endif
goto WRITE_STATE;
break;
case MATRIXSSL_REQUEST_CLOSE:
#ifdef DEBUG
fprintf(stderr, "%s: WS req close\n", __func__);
#endif
matrixSslDeleteSession(ssl);
destroy_spead_client(cl);
exit(EXIT_FAILURE);
break;
case MATRIXSSL_HANDSHAKE_COMPLETE:
#ifdef DEBUG
fprintf(stderr, "%s: WS handshake complete\n", __func__);
#endif
goto READ_STATE; /*note might need to jump to receiveddata*/
break;
}
}
}
matrixSslDeleteSession(ssl);
#if 0
const char *filename = "/home/adam/live_audio_streaming/tenc/agoria-scala_original_mixwww.mp3vip.org.mp3";
//fd = open("/home/adam/build/lame-3.99.5/testcase.mp3", O_RDONLY);
fd = open("/home/adam/live_audio_streaming/tenc/agoria-scala_original_mixwww.mp3vip.org.mp3", O_RDONLY);
if (fd < 0){
#ifdef DEBUG
fprintf(stderr, "%s: open error (%s)\n", __func__, strerror(errno));
#endif
exit(EXIT_SUCCESS);
}
while((bytes = read_ssl(ssl, data, BUFF)) > 0){
#ifdef DEBUG
fprintf(stderr, "%s: read [%d] [%s:%d] [%s]\n", __func__, bytes, get_client_address(cl), get_client_port(cl), data);
#endif
}
#endif
#if 0
while (run){
switch (mode){
case MODE_CONNECTING:
bytes = read_ssl(ssl, data, BUFF);
switch (bytes){
case 0:
#ifdef DEBUG
fprintf(stderr, "%s: read EOF client[%s:%d]\n", __func__, get_client_address(cl), get_client_port(cl));
#endif
run = 0;
break;
case -1:
#ifdef DEBUG
fprintf(stderr, "%s: read error client[%s:%d] (%s)\n", __func__, get_client_address(cl), get_client_port(cl), strerror(errno));
#endif
run = 0;
break;
}
#ifdef DEBUG
fprintf(stderr, "%s: [%s:%d] [%s]\n", __func__, get_client_address(cl), get_client_port(cl), data);
#endif
res = get_resource_str(data);
if (res == NULL){
#ifdef DEBUG
fprintf(stderr, "%s: NULL RESOURCE\n", __func__);
#endif
run = 0;
}
#ifdef DEBUG
fprintf(stderr, "%s: got resource [%s]\n", __func__, res);
#endif
if (strncmp(res, "/sound", 6) == 0){
bytes = write_ssl(ssl, REPLY, sizeof(REPLY));
switch(bytes){
case -1:
#ifdef DEBUG
fprintf(stderr, "%s: write error client[%s:%d] (%s)\n", __func__, get_client_address(cl), get_client_port(cl), strerror(errno));
#endif
run = 0;
break;
}
mode = MODE_SENDING;
} else {
run = 0;
}
break;
case MODE_SENDING:
#if 0
bytes = sendfile(cl->c_fd, fd, NULL, BUFF+initial);
if (bytes == 0){
close(fd);
#if 0
fd = open("/srv/beats/Meditations On Afrocentrism EP/03 Down The Line (It Takes A Number).mp3", O_RDONLY);
if (fd < 0){
#ifdef DEBUG
fprintf(stderr, "%s: open error (%s)\n", __func__, strerror(errno));
#endif
exit(EXIT_SUCCESS);
}
#endif
} else if (bytes < 0){
#ifdef DEBUG
fprintf(stderr, "%s: sendfile error client[%s:%d] (%s)\n", __func__, get_client_address(cl), get_client_port(cl), strerror(errno));
#endif
exit(EXIT_SUCCESS);
}
if (initial > 1){
initial--;
}
#if 0
def DEBUG
fprintf(stderr, "%s: [%s:%d] sent %d bytes\n", __func__, get_client_address(cl), get_client_port(cl), bytes);
#endif
usleep(9766/initial);
#endif
run = 0;
break;
}
}
#endif
#ifdef DEBUG
fprintf(stderr, "%s: child[%d] ending\n", __func__, getpid());
#endif
#if 0
if (fd > 0){
close(fd);
}
#endif
destroy_spead_client(cl);
//shutdown(cl->c_fd, SHUT_RDWR);
exit(EXIT_SUCCESS);
}
/*
Main
*/
int main(int argc, char ** argv)
{
struct sockaddr_in inaddr;
socklen_t inaddrlen;
struct timeval timeout;
ssl_t *ssl;
serverDtls_t *dtlsCtx;
SOCKET sock;
fd_set readfd;
unsigned char *sslBuf, *recvfromBuf, *CAstream;
#ifdef USE_DTLS_DEBUG_TRACE
unsigned char *addrstr;
#endif
#if !defined(ID_PSK) && !defined(ID_DHE_PSK)
unsigned char *keyValue, *certValue;
int32 keyLen, certLen;
#endif
sslKeys_t *keys;
int32 freeBufLen, rc, val, recvLen, err, CAstreamLen;
int32 sslBufLen, rcr, rcs, sendLen, recvfromBufLen;
sslSessOpts_t options;
#ifdef WIN32
WSADATA wsaData;
WSAStartup(MAKEWORD(1, 1), &wsaData);
#endif
rc = 0;
ssl = NULL;
dtlsCtx = NULL;
sock = INVALID_SOCKET;
/* parse input arguments */
if (0 != process_cmd_options(argc, argv)) {
usage();
return 0;
}
if (sigsetup() < 0) {
_psTrace("Init error creating signal handlers\n");
return DTLS_FATAL;
}
if (matrixSslOpen() < 0) {
_psTrace("Init error opening MatrixDTLS library\n");
return DTLS_FATAL;
}
if (matrixSslNewKeys(&keys, NULL) < 0) {
_psTrace("Init error allocating key structure\n");
matrixSslClose();
return DTLS_FATAL;
}
if ((rc = initClientList(MAX_CLIENTS)) < 0) {
_psTrace("Init error opening client list\n");
goto MATRIX_EXIT;
}
recvfromBufLen = matrixDtlsGetPmtu();
if ((recvfromBuf = psMalloc(MATRIX_NO_POOL, recvfromBufLen)) == NULL) {
rc = PS_MEM_FAIL;
_psTrace("Init error allocating receive buffer\n");
goto CLIENT_EXIT;
}
#ifdef USE_HEADER_KEYS
/*
In-memory based keys
Build the CA list first for potential client auth usage
*/
CAstreamLen = 0;
#ifdef USE_RSA
CAstreamLen += sizeof(RSACAS);
#ifdef USE_ECC
CAstreamLen += sizeof(ECDHRSACAS);
#endif
#endif
#ifdef USE_ECC
CAstreamLen += sizeof(ECCAS);
#endif
CAstream = psMalloc(NULL, CAstreamLen);
CAstreamLen = 0;
#ifdef USE_RSA
memcpy(CAstream, RSACAS, sizeof(RSACAS));
CAstreamLen += sizeof(RSACAS);
#ifdef USE_ECC
memcpy(CAstream + CAstreamLen, ECDHRSACAS, sizeof(ECDHRSACAS));
CAstreamLen += sizeof(ECDHRSACAS);
#endif
#endif
#ifdef USE_ECC
memcpy(CAstream + CAstreamLen, ECCAS, sizeof(ECCAS));
CAstreamLen += sizeof(ECCAS);
#endif
#ifdef EXAMPLE_RSA_KEYS
switch (g_rsaKeySize) {
case 1024:
certValue = (unsigned char *)RSA1024;
certLen = sizeof(RSA1024);
keyValue = (unsigned char *)RSA1024KEY;
keyLen = sizeof(RSA1024KEY);
break;
case 2048:
certValue = (unsigned char *)RSA2048;
certLen = sizeof(RSA2048);
keyValue = (unsigned char *)RSA2048KEY;
keyLen = sizeof(RSA2048KEY);
break;
case 3072:
certValue = (unsigned char *)RSA3072;
certLen = sizeof(RSA3072);
keyValue = (unsigned char *)RSA3072KEY;
keyLen = sizeof(RSA3072KEY);
break;
case 4096:
certValue = (unsigned char *)RSA4096;
certLen = sizeof(RSA4096);
keyValue = (unsigned char *)RSA4096KEY;
keyLen = sizeof(RSA4096KEY);
break;
default:
_psTraceInt("Invalid RSA key length (%d)\n", g_rsaKeySize);
return -1;
}
if ((rc = matrixSslLoadRsaKeysMem(keys, (const unsigned char *)certValue,
certLen, (const unsigned char *)keyValue, keyLen, CAstream,
CAstreamLen)) < 0) {
_psTrace("No certificate material loaded. Exiting\n");
psFree(CAstream, NULL);
matrixSslDeleteKeys(keys);
matrixSslClose();
return rc;
}
#endif
#ifdef EXAMPLE_ECDH_RSA_KEYS
switch (g_ecdhKeySize) {
case 256:
certValue = (unsigned char *)ECDHRSA256;
certLen = sizeof(ECDHRSA256);
keyValue = (unsigned char *)ECDHRSA256KEY;
keyLen = sizeof(ECDHRSA256KEY);
break;
case 521:
certValue = (unsigned char *)ECDHRSA521;
certLen = sizeof(ECDHRSA521);
keyValue = (unsigned char *)ECDHRSA521KEY;
keyLen = sizeof(ECDHRSA521KEY);
break;
default:
_psTraceInt("Invalid ECDH_RSA key length (%d)\n", g_ecdhKeySize);
return -1;
}
if ((rc = matrixSslLoadEcKeysMem(keys, (const unsigned char *)certValue,
certLen, (const unsigned char *)keyValue, keyLen, CAstream,
CAstreamLen)) < 0) {
_psTrace("No certificate material loaded. Exiting\n");
psFree(CAstream, NULL);
matrixSslDeleteKeys(keys);
matrixSslClose();
return rc;
}
#endif
#ifdef EXAMPLE_EC_KEYS
switch (g_eccKeySize) {
case 192:
certValue = (unsigned char *)EC192;
certLen = sizeof(EC192);
keyValue = (unsigned char *)EC192KEY;
keyLen = sizeof(EC192KEY);
break;
case 224:
certValue = (unsigned char *)EC224;
certLen = sizeof(EC224);
keyValue = (unsigned char *)EC224KEY;
keyLen = sizeof(EC224KEY);
break;
case 256:
certValue = (unsigned char *)EC256;
certLen = sizeof(EC256);
keyValue = (unsigned char *)EC256KEY;
keyLen = sizeof(EC256KEY);
break;
case 384:
certValue = (unsigned char *)EC384;
certLen = sizeof(EC384);
keyValue = (unsigned char *)EC384KEY;
keyLen = sizeof(EC384KEY);
break;
case 521:
certValue = (unsigned char *)EC521;
certLen = sizeof(EC521);
keyValue = (unsigned char *)EC521KEY;
keyLen = sizeof(EC521KEY);
break;
default:
_psTraceInt("Invalid ECC key length (%d)\n", g_eccKeySize);
return -1;
}
if ((rc = matrixSslLoadEcKeysMem(keys, certValue, certLen,
keyValue, keyLen, CAstream, CAstreamLen)) < 0) {
_psTrace("No certificate material loaded. Exiting\n");
psFree(CAstream, NULL);
matrixSslDeleteKeys(keys);
matrixSslClose();
return rc;
}
#endif
#ifdef REQUIRE_DH_PARAMS
if (matrixSslLoadDhParamsMem(keys, DHPARAM2048, DHPARAM2048_SIZE)
< 0) {
_psTrace("Unable to load DH parameters\n");
}
#endif /* DH_PARAMS */
psFree(CAstream, NULL);
#else /* USE_HEADER_KEYS */
/*
File based keys
Build the CA list first for potential client auth usage
*/
CAstreamLen = 0;
#ifdef USE_RSA
if (g_rsaKeySize == 3072)
CAstreamLen += (int32)strlen(rsaCA3072File) + 1;
else
CAstreamLen += (int32)strlen(rsaCAFile) + 1;
#ifdef USE_ECC
CAstreamLen += (int32)strlen(ecdhRsaCAFile) + 1;
#endif
#endif
#ifdef USE_ECC
CAstreamLen += (int32)strlen(ecCAFile) + 1;
#endif
CAstream = psMalloc(NULL, CAstreamLen);
memset(CAstream, 0x0, CAstreamLen);
CAstreamLen = 0;
#ifdef USE_RSA
if (g_rsaKeySize == 3072) {
memcpy(CAstream, rsaCA3072File, strlen(rsaCA3072File));
CAstreamLen += strlen(rsaCA3072File);
}
else {
memcpy(CAstream, rsaCAFile, strlen(rsaCAFile));
CAstreamLen += strlen(rsaCAFile);
}
#ifdef USE_ECC
memcpy(CAstream + CAstreamLen, ";", 1); CAstreamLen++;
memcpy(CAstream + CAstreamLen, ecdhRsaCAFile, strlen(ecdhRsaCAFile));
CAstreamLen += strlen(ecdhRsaCAFile);
#endif
#endif
#ifdef USE_ECC
if (CAstreamLen > 0) {
memcpy(CAstream + CAstreamLen, ";", 1); CAstreamLen++;
}
memcpy(CAstream + CAstreamLen, ecCAFile, strlen(ecCAFile));
#endif
/* Load Identiy */
#ifdef EXAMPLE_RSA_KEYS
if ((rc = matrixSslLoadRsaKeys(keys, rsaCertFile, rsaPrivkeyFile, NULL,
(char*)CAstream)) < 0) {
_psTrace("No certificate material loaded. Exiting\n");
psFree(CAstream);
matrixSslDeleteKeys(keys);
matrixSslClose();
return rc;
}
#endif
#ifdef EXAMPLE_ECDH_RSA_KEYS
if ((rc = matrixSslLoadEcKeys(keys, ecdhRsaCertFile, ecdhRsaPrivkeyFile,
NULL, (char*)CAstream)) < 0) {
_psTrace("No certificate material loaded. Exiting\n");
psFree(CAstream);
matrixSslDeleteKeys(keys);
matrixSslClose();
return rc;
}
#endif
#ifdef EXAMPLE_EC_KEYS
if ((rc = matrixSslLoadEcKeys(keys, ecCertFile, ecPrivkeyFile, NULL,
(char*)CAstream)) < 0) {
_psTrace("No certificate material loaded. Exiting\n");
psFree(CAstream);
matrixSslDeleteKeys(keys);
matrixSslClose();
return rc;
}
#endif
#ifdef REQUIRE_DH_PARAMS
if (matrixSslLoadDhParams(keys, dhParamFile) < 0) {
_psTrace("Unable to load DH parameters\n");
}
#endif
psFree(CAstream);
#endif /* USE_HEADER_KEYS */
#ifdef USE_PSK_CIPHER_SUITE
/* The first ID is considered as null-terminiated string for
compatibility with OpenSSL's s_client default client identity
"Client_identity" */
matrixSslLoadPsk(keys,
PSK_HEADER_TABLE[0].key,
sizeof(PSK_HEADER_TABLE[0].key),
PSK_HEADER_TABLE[0].id,
strlen((const char *)PSK_HEADER_TABLE[0].id));
for (rc = 1; rc < PSK_HEADER_TABLE_COUNT; rc++) {
matrixSslLoadPsk(keys,
PSK_HEADER_TABLE[rc].key,
sizeof(PSK_HEADER_TABLE[rc].key),
PSK_HEADER_TABLE[rc].id,
sizeof(PSK_HEADER_TABLE[rc].id));
}
#endif /* PSK */
if ((sock = newUdpSocket(NULL, DTLS_PORT, &err)) == INVALID_SOCKET) {
_psTrace("Error creating UDP socket\n");
goto DTLS_EXIT;
}
_psTraceInt("DTLS server running on port %d\n", DTLS_PORT);
/*
Server loop
*/
for (exitFlag = 0; exitFlag == 0;) {
timeout.tv_sec = 1;
timeout.tv_usec = 0;
FD_ZERO(&readfd);
FD_SET(sock, &readfd);
/*
Always just wait a second for any incoming data. The primary loop
mechanism reads data from one source and replies with handshake data
if needed (that reply may be a resend if reading a repeat message).
Individual client timeouts are then handled
*/
val = select(sock+1, &readfd, NULL, NULL, &timeout);
if (val > 0 && FD_ISSET(sock, &readfd)) {
psTraceIntDtls("Select woke %d\n", val);
/* recvfrom data must always go into generic buffer becuase we
don't yet know who it is from */
inaddrlen = sizeof(struct sockaddr_in);
if ((recvLen = (int32)recvfrom(sock, recvfromBuf, recvfromBufLen, 0,
(struct sockaddr *)&inaddr, &inaddrlen)) < 0) {
#ifdef WIN32
if (SOCKET_ERRNO != EWOULDBLOCK &&
SOCKET_ERRNO != WSAECONNRESET) {
#else
if (SOCKET_ERRNO != EWOULDBLOCK) {
#endif
_psTraceInt("recvfrom error %d. Exiting\n", SOCKET_ERRNO);
goto DTLS_EXIT;
}
continue;
}
#ifdef USE_DTLS_DEBUG_TRACE
/* nice for debugging */
{
const char *addrstr;
addrstr = getaddrstring((struct sockaddr *)&inaddr, 1);
psTraceIntDtls("Read %d bytes ", recvLen);
psTraceStrDtls("from %s\n", (char*)addrstr);
psFree(addrstr, NULL);
}
#endif
/* Locate the SSL context of this receive and create a new session
if not found */
if ((dtlsCtx = findClient(inaddr)) == NULL) {
memset(&options, 0x0, sizeof(sslSessOpts_t));
options.versionFlag = SSL_FLAGS_DTLS;
options.truncHmac = -1;
if (matrixSslNewServerSession(&ssl, keys,
certValidator, &options) < 0) {
rc = DTLS_FATAL; goto DTLS_EXIT;
}
if ((dtlsCtx = registerClient(inaddr, sock, ssl)) == NULL) {
/* Client list is full. Just have to ignore */
matrixSslDeleteSession(ssl);
continue;
}
}
ssl = dtlsCtx->ssl;
/* Move socket data into internal buffer */
freeBufLen = matrixSslGetReadbuf(ssl, &sslBuf);
psAssert(freeBufLen >= recvLen);
psAssert(freeBufLen == matrixDtlsGetPmtu());
memcpy(sslBuf, recvfromBuf, recvLen);
/* Notify SSL state machine that we've received more data into the
ssl buffer retreived with matrixSslGetReadbuf. */
if ((rcr = matrixSslReceivedData(ssl, recvLen, &sslBuf,
(uint32*)&freeBufLen)) < 0) {
clearClient(dtlsCtx);
continue; /* Next connection */
}
/* Update last activity time and reset timeout*/
psGetTime(&dtlsCtx->lastRecvTime, NULL);
dtlsCtx->timeout = MIN_WAIT_SECS;
PROCESS_MORE_FROM_BUFFER:
/* Process any incoming plaintext application data */
switch (rcr) {
case MATRIXSSL_HANDSHAKE_COMPLETE:
/* This is a resumed handshake case which means we are
the last to receive handshake flights and we know the
handshake is complete. However, the internal workings
will not flag us officially complete until we receive
application data from the peer so we need a local flag
to handle this case so we are not resending our final
flight */
dtlsCtx->connStatus = RESUMED_HANDSHAKE_COMPLETE;
psTraceDtls("Got HANDSHAKE_COMPLETE out of ReceivedData\n");
break;
case MATRIXSSL_APP_DATA:
/* Now safe to clear the connStatus flag that was keeping
track of the state between receiving the final flight of
a resumed handshake and receiving application data. The
reciept of app data has now internally disabled flight
resends */
dtlsCtx->connStatus = 0;
_psTrace("Client connected. Received...\n");
_psTraceStr("%s\n", (char*)sslBuf);
break;
case MATRIXSSL_REQUEST_SEND:
/* Still handshaking with this particular client */
while ((sslBufLen = matrixDtlsGetOutdata(ssl,
&sslBuf)) > 0) {
if ((sendLen = udpSend(dtlsCtx->fd, sslBuf, sslBufLen,
(struct sockaddr*)&inaddr,
sizeof(struct sockaddr_in),
dtlsCtx->timeout,
packet_loss_prob,
NULL)) < 0) {
psTraceDtls("udpSend error. Ignoring\n");
}
/* Always indicate the entire datagram was sent as
there is no way for DTLS to handle partial records.
Resends and timeouts will handle any problems */
rcs = matrixDtlsSentData(ssl, sslBufLen);
if (rcs == MATRIXSSL_REQUEST_CLOSE) {
psTraceDtls("Got REQUEST_CLOSE out of SentData\n");
clearClient(dtlsCtx);
break;
}
if (rcs == MATRIXSSL_HANDSHAKE_COMPLETE) {
/* This is the standard handshake case */
_psTrace("Got HANDSHAKE_COMPLETE from SentData\n");
break;
}
/* SSL_REQUEST_SEND is handled by loop logic */
}
break;
case MATRIXSSL_REQUEST_RECV:
psTraceDtls("Got REQUEST_RECV from ReceivedData\n");
break;
case MATRIXSSL_RECEIVED_ALERT:
/* The first byte of the buffer is the level */
/* The second byte is the description */
if (*sslBuf == SSL_ALERT_LEVEL_FATAL) {
psTraceIntDtls("Fatal alert: %d, closing connection.\n",
*(sslBuf + 1));
clearClient(dtlsCtx);
continue; /* Next connection */
}
/* Closure alert is normal (and best) way to close */
if (*(sslBuf + 1) == SSL_ALERT_CLOSE_NOTIFY) {
clearClient(dtlsCtx);
continue; /* Next connection */
}
psTraceIntDtls("Warning alert: %d\n", *(sslBuf + 1));
if ((rcr = matrixSslProcessedData(ssl, &sslBuf,
(uint32*)&freeBufLen)) == 0) {
continue;
}
goto PROCESS_MORE_FROM_BUFFER;
default:
continue; /* Next connection */
}
} else if (val < 0) {
if (SOCKET_ERRNO != EINTR) {
psTraceIntDtls("unhandled error %d from select", SOCKET_ERRNO);
}
}
/*
Have either timed out waiting for a read or have processed a single
recv. Now check to see if any timeout resends are required
*/
rc = handleResends(sock);
} /* Main Select Loop */
DTLS_EXIT:
psFree(recvfromBuf, NULL);
CLIENT_EXIT:
closeClientList();
MATRIX_EXIT:
matrixSslDeleteKeys(keys);
matrixSslClose();
if (sock != INVALID_SOCKET) close(sock);
return rc;
}
/******************************************************************************/
/*
Work through client list and resend handshake flight if haven't heard
from them in a while
*/
static int32 handleResends(SOCKET sock)
{
serverDtls_t *dtlsCtx;
ssl_t *ssl;
psTime_t now;
unsigned char *sslBuf;
int16 i;
int32 sendLen, rc;
uint32 timeout, sslBufLen, clientCount;
clientCount = 0; /* return code is number of active clients or < 0 on error */
psGetTime(&now, NULL);
for (i = 0; i < tableSize; i++) {
dtlsCtx = &clientTable[i];
if (dtlsCtx->ssl != NULL) {
clientCount++;
timeout = psDiffMsecs(dtlsCtx->lastRecvTime, now, NULL) / 1000;
/* Haven't heard from this client in a while. Might need resend */
if (timeout > dtlsCtx->timeout) {
/* if timeout is too great. clear conn */
if (dtlsCtx->timeout >= MAX_WAIT_SECS) {
clearClient(dtlsCtx);
clientCount--;
break;
}
/* Increase the timeout for next pass */
dtlsCtx->timeout *= 2;
/* If we are in a RESUMED_HANDSHAKE_COMPLETE state that means
we are positive the handshake is complete so we don't want to
resend no matter what. This is an interim state before the
internal mechaism sees an application data record and flags
us as complete officially */
if (dtlsCtx->connStatus == RESUMED_HANDSHAKE_COMPLETE) {
psTraceDtls("Connected but awaiting data\n");
continue;
}
ssl = dtlsCtx->ssl;
while ((sslBufLen = matrixDtlsGetOutdata(ssl,
&sslBuf)) > 0) {
if ((sendLen = udpSend(dtlsCtx->fd, sslBuf, sslBufLen,
(struct sockaddr*)&dtlsCtx->addr,
sizeof(struct sockaddr_in),
dtlsCtx->timeout / 2,
packet_loss_prob,
NULL)) < 0) {
psTraceDtls("udpSend error. Ignoring\n");
}
/* Always indicate the entire datagram was sent as
there is no way for DTLS to handle partial records.
Resends and timeouts will handle any problems */
if ((rc = matrixDtlsSentData(ssl, sslBufLen)) < 0) {
psTraceDtls("internal error\n");
clearClient(dtlsCtx);
clientCount--;
break;
}
if (rc == MATRIXSSL_REQUEST_CLOSE) {
psTraceDtls("Got REQUEST_CLOSE out of SentData\n");
clearClient(dtlsCtx);
clientCount--;
break;
}
if (rc == MATRIXSSL_HANDSHAKE_COMPLETE) {
/* This is the standard handshake case */
psTraceDtls("Got HANDSHAKE_COMPLETE out of SentData\n");
break;
}
/* SSL_REQUEST_SEND is handled by loop logic */
}
}
}
}
return clientCount;
}
