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Merge pull request #3446 from haydenroche5/client_want_write_sim

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Add an option to the example client to simulate WANT_WRITE errors.
This commit is contained in:
toddouska
2020-11-18 15:54:09 -08:00
committed by GitHub
parent 9bde34ef5b 3d5c747ed5
commit 9183c35fb8
5 changed files with 82 additions and 19 deletions
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28
examples/client/client.c
View File

@ -184,7 +184,12 @@ static int NonBlockingSSL_Connect(WOLFSSL* ssl)
else
#endif
{
if (error != WOLFSSL_ERROR_WANT_WRITE) {
if (error == WOLFSSL_ERROR_WANT_WRITE) {
select_ret = tcp_select_tx(sockfd, currTimeout);
}
else
{
#ifdef WOLFSSL_DTLS
currTimeout = wolfSSL_dtls_get_current_timeout(ssl);
#endif
@ -206,13 +211,6 @@ static int NonBlockingSSL_Connect(WOLFSSL* ssl)
#endif
error = wolfSSL_get_error(ssl, 0);
elapsedSec = 0; /* reset elapsed */
if (error == WOLFSSL_ERROR_WANT_WRITE) {
/* Do a send select here. */
select_ret = tcp_select_tx(sockfd, 1);
if (select_ret == TEST_TIMEOUT) {
error = WOLFSSL_FATAL_ERROR;
}
}
}
else if (select_ret == TEST_TIMEOUT && !wolfSSL_dtls(ssl)) {
error = WOLFSSL_ERROR_WANT_READ;
@ -1108,6 +1106,7 @@ static const char* client_usage_msg[][66] = {
#ifdef HAVE_TRUSTED_CA
"-5 Use Trusted CA Key Indication\n", /* 63 */
#endif
"-6 Simulate WANT_WRITE errors on every other IO send\n",
#ifdef HAVE_CURVE448
"-8 Use X448 for key exchange\n", /* 66 */
#endif
@ -1485,6 +1484,7 @@ THREAD_RETURN WOLFSSL_THREAD client_test(void* args)
int matchName = 0;
int doPeerCheck = 1;
int nonBlocking = 0;
int simulateWantWrite = 0;
int resumeSession = 0;
int wc_shutdown = 0;
int disableCRL = 0;
@ -1660,7 +1660,7 @@ THREAD_RETURN WOLFSSL_THREAD client_test(void* args)
while ((ch = mygetopt(argc, argv, "?:"
"ab:c:defgh:i;jk:l:mnop:q:rstuv:wxyz"
"A:B:CDE:F:GH:IJKL:M:NO:PQRS:TUVW:XYZ:"
"01:23:458"
"01:23:4568"
"@#")) != -1) {
switch (ch) {
case '?' :
@ -2116,6 +2116,11 @@ THREAD_RETURN WOLFSSL_THREAD client_test(void* args)
#endif /* HAVE_TRUSTED_CA */
break;
case '6' :
nonBlocking = 1;
simulateWantWrite = 1;
break;
case '8' :
#ifdef HAVE_CURVE448
useX448 = 1;
@ -2387,6 +2392,11 @@ THREAD_RETURN WOLFSSL_THREAD client_test(void* args)
err_sys("unable to get ctx");
#endif
if (simulateWantWrite)
{
wolfSSL_CTX_SetIOSend(ctx, SimulateWantWriteIOSendCb);
}
#ifdef SINGLE_THREADED
if (wolfSSL_CTX_new_rng(ctx) != WOLFSSL_SUCCESS) {
wolfSSL_CTX_free(ctx); ctx = NULL;

29
examples/server/server.c
View File

@ -137,7 +137,6 @@ static int lng_index = 0;
}
#endif
static void err_sys_ex(int out, const char* msg)
{
if (out == 1) { /* if server is running w/ -x flag, print error w/o exit */
@ -312,7 +311,11 @@ static int NonBlockingSSL_Accept(SSL* ssl)
else
#endif
{
if (error != WOLFSSL_ERROR_WANT_WRITE) {
if (error == WOLFSSL_ERROR_WANT_WRITE)
{
select_ret = tcp_select_tx(sockfd, currTimeout);
}
else {
#ifdef WOLFSSL_DTLS
currTimeout = wolfSSL_dtls_get_current_timeout(ssl);
#endif
@ -333,12 +336,6 @@ static int NonBlockingSSL_Accept(SSL* ssl)
srvHandShakeCB, srvTimeoutCB, srvTo);
#endif
error = SSL_get_error(ssl, 0);
if (error == WOLFSSL_ERROR_WANT_WRITE) {
/* Do a select here. */
select_ret = tcp_select_tx(sockfd, 1);
if (select_ret == TEST_TIMEOUT)
error = WOLFSSL_FATAL_ERROR;
}
}
else if (select_ret == TEST_TIMEOUT && !wolfSSL_dtls(ssl)) {
error = WOLFSSL_ERROR_WANT_READ;
@ -694,6 +691,7 @@ static const char* server_usage_msg[][56] = {
#ifdef HAVE_TRUSTED_CA
"-5 Use Trusted CA Key Indication\n", /* 53 */
#endif
"-6 Simulate WANT_WRITE errors on every other IO send\n",
#ifdef HAVE_CURVE448
"-8 Pre-generate Key share using Curve448 only\n", /* 55 */
#endif
@ -984,6 +982,7 @@ THREAD_RETURN WOLFSSL_THREAD server_test(void* args)
int needDH = 0;
int useNtruKey = 0;
int nonBlocking = 0;
int simulateWantWrite = 0;
int fewerPackets = 0;
#ifdef HAVE_PK_CALLBACKS
int pkCallbacks = 0;
@ -1157,8 +1156,8 @@ THREAD_RETURN WOLFSSL_THREAD server_test(void* args)
while ((ch = mygetopt(argc, argv, "?:"
"abc:defgijk:l:mnop:q:rstuv:wxy"
"A:B:C:D:E:FGH:IJKL:MNO:PQR:S:TUVYZ:"
"01:23:4:58"
"@#")) != -1) {
"01:23:4:568"
"@#")) != -1) {
switch (ch) {
case '?' :
if(myoptarg!=NULL) {
@ -1549,6 +1548,11 @@ THREAD_RETURN WOLFSSL_THREAD server_test(void* args)
#endif /* HAVE_TRUSTED_CA */
break;
case '6' :
nonBlocking = 1;
simulateWantWrite = 1;
break;
case '8' :
#ifdef HAVE_CURVE448
useX448 = 1;
@ -1730,6 +1734,11 @@ THREAD_RETURN WOLFSSL_THREAD server_test(void* args)
if (ctx == NULL)
err_sys_ex(catastrophic, "unable to get ctx");
if (simulateWantWrite)
{
wolfSSL_CTX_SetIOSend(ctx, SimulateWantWriteIOSendCb);
}
#if defined(HAVE_SESSION_TICKET) && defined(HAVE_CHACHA) && \
defined(HAVE_POLY1305)
if (TicketInit() != 0)

2
tests/test-tls13.conf
View File

@ -9,10 +9,12 @@
# server TLSv1.3 TLS13-AES128-GCM-SHA256
-v 4
-l TLS13-AES128-GCM-SHA256
-6
# client TLSv1.3 TLS13-AES128-GCM-SHA256
-v 4
-l TLS13-AES128-GCM-SHA256
-6
# server TLSv1.3 TLS13-AES256-GCM-SHA384
-v 4

2
tests/test.conf
View File

@ -2210,10 +2210,12 @@
# client TLSv1.2 with block cipher
-v 3
-l ECDHE-RSA-AES128-SHA256
-6
# server TLSv1.2 with block cipher
-v 3
-l ECDHE-RSA-AES128-SHA256
-6
# client TLSv1.2 with block cipher and no ETM
-v 3

40
wolfssl/test.h
View File

@ -3805,8 +3805,48 @@ static WC_INLINE void SetupPkCallbackContexts(WOLFSSL* ssl, void* myCtx)
#endif /* HAVE_PK_CALLBACKS */
static WC_INLINE int SimulateWantWriteIOSendCb(WOLFSSL *ssl, char *buf, int sz, void *ctx)
{
static int wantWriteFlag = 1;
int sent;
int sd = *(int*)ctx;
(void)ssl;
if (!wantWriteFlag)
{
wantWriteFlag = 1;
sent = wolfIO_Send(sd, buf, sz, 0);
if (sent < 0) {
int err = errno;
if (err == SOCKET_EWOULDBLOCK || err == SOCKET_EAGAIN) {
return WOLFSSL_CBIO_ERR_WANT_WRITE;
}
else if (err == SOCKET_ECONNRESET) {
return WOLFSSL_CBIO_ERR_CONN_RST;
}
else if (err == SOCKET_EINTR) {
return WOLFSSL_CBIO_ERR_ISR;
}
else if (err == SOCKET_EPIPE) {
return WOLFSSL_CBIO_ERR_CONN_CLOSE;
}
else {
return WOLFSSL_CBIO_ERR_GENERAL;
}
}
return sent;
}
else
{
wantWriteFlag = 0;
return WOLFSSL_CBIO_ERR_WANT_WRITE;
}
}
#if defined(__hpux__) || defined(__MINGW32__) || defined (WOLFSSL_TIRTOS) \
|| defined(_MSC_VER)