TLS 1.3 Early Data: fix

Will process early data packets now.
Added test to check output of server for early data being received.

examples/client/client.c

@@ -978,7 +978,9 @@ static const char* client_usage_msg[][59] = {
 #endif
         "-B <num>    Benchmark throughput"
                                 " using <num> bytes and print stats\n", /* 15 */
+#ifndef NO_PSK
         "-s          Use pre Shared keys\n",                            /* 16 */
+#endif
         "-d          Disable peer checks\n",                            /* 17 */
         "-D          Override Date Errors example\n",                   /* 18 */
         "-e          List Every cipher suite available, \n",            /* 19 */
@@ -1138,7 +1140,9 @@ static const char* client_usage_msg[][59] = {
 #endif
         "-B <num>    <num> バイトを用いてのベンチマーク・スループット測定"
                                                   "と結果を出力する\n", /* 15 */
+#ifndef NO_PSK
         "-s          事前共有鍵を使用する\n",                           /* 16 */
+#endif
         "-d          ピア確認を無効とする\n",                           /* 17 */
         "-D          日付エラー用コールバック例の上書きを行う\n",       /* 18 */
         "-e          利用可能な全ての暗号スイートをリスト, \n",         /* 19 */

scripts/tls13.test

@@ -15,6 +15,10 @@ counter=0
 # per source tree
 ready_file=`pwd`/wolfssl_tls13_ready$$
 client_file=`pwd`/wolfssl_tls13_client$$
+# Server output
+server_out_file=`pwd`/wolfssl_tls13_server_out$$
+# Client output
+client_out_file=`pwd`/wolfssl_tls13_client_out$$
 
 echo "ready file $ready_file"
 
@@ -53,12 +57,21 @@ do_cleanup() {
     then
         echo "killing server"
         kill -9 $server_pid
+        server_pid=$no_pid
     fi
     remove_ready_file
     if [ -e $client_file ]; then
         echo -e "removing existing client file"
         rm $client_file
     fi
+    if [ -e $server_out_file ]; then
+        echo -e "removing existing server output file"
+        rm $server_out_file
+    fi
+    if [ -e $client_out_file ]; then
+        echo -e "removing existing client output file"
+        rm $client_out_file
+    fi
 }
 
 do_trap() {
@@ -106,6 +119,7 @@ RESULT=$?
 remove_ready_file
 if [ $RESULT -eq 0 ]; then
     echo -e "\n\nIssue with mismatched TLS v1.3 cipher suites"
+    do_cleanup
     exit 1
 fi
 do_cleanup
@@ -124,12 +138,14 @@ if [ $? -ne 0 ]; then
     remove_ready_file
     if [ $RESULT -eq 0 ]; then
         echo -e "\n\nIssue with requiring mutual authentication"
+        do_cleanup
         exit 1
     fi
     do_cleanup
     echo ""
 fi
 
+# Check for TLS 1.2 support
 ./examples/client/client -v 3 2>&1 | grep -- 'Bad SSL version'
 if [ $? -ne 0 ]; then
     # TLS 1.3 server / TLS 1.2 client.
@@ -143,6 +159,7 @@ if [ $? -ne 0 ]; then
     remove_ready_file
     if [ $RESULT -eq 0 ]; then
         echo -e "\n\nIssue with TLS v1.3 server downgrading to TLS v1.2"
+        do_cleanup
         exit 1
     fi
     do_cleanup
@@ -159,6 +176,7 @@ if [ $? -ne 0 ]; then
     remove_ready_file
     if [ $RESULT -eq 0 ]; then
         echo -e "\n\nIssue with TLS v1.3 client upgrading server to TLS v1.3"
+        do_cleanup
         exit 1
     fi
     do_cleanup
@@ -189,6 +207,7 @@ if [ $? -ne 0 ]; then
         remove_ready_file
         if [ $RESULT -eq 0 ]; then
             echo -e "\n\nTLS v1.3 downgrading to TLS v1.2 due to ciphers"
+            do_cleanup
             exit 1
         fi
         do_cleanup
@@ -198,6 +217,65 @@ if [ $? -ne 0 ]; then
     fi
 fi
 
+# Check for EarlyData support
+./examples/client/client -? 2>&1 | grep -- 'Early data'
+if [ $? -eq 0 ]; then
+    early_data=yes
+fi
+./examples/client/client -? 2>&1 | grep -- 'Shared keys'
+if [ $? -eq 0 ]; then
+    psk=yes
+fi
+
+if [ "$early_data" = "yes" ]; then
+    echo -e "\n\nTLS v1.3 Early Data - session ticket"
+    port=0
+    (./examples/server/server -v 4 -r -0 -R $ready_file -p $port 2>&1 | \
+            tee $server_out_file) &
+    server_pid=$!
+    create_port
+    ./examples/client/client -v 4 -r -0 -p $port 2>&1 >$client_out_file
+    RESULT=$?
+    cat $client_out_file
+    remove_ready_file
+    grep 'Session Ticket' $client_out_file
+    session_ticket=$?
+    early_data_cnt=`grep 'Early Data' $server_out_file | wc -l`
+    if [ $session_ticket -eq 0 -a $early_data_cnt -ne 2 ]; then
+        RESULT=1
+    fi
+    if [ $RESULT -ne 0 ]; then
+        echo -e "\n\nIssue with TLS v1.3 Early DAta - session ticket"
+        do_cleanup
+        exit 1
+    fi
+    do_cleanup
+    echo ""
+fi
+
+if [ "$early_data" = "yes" -a "$psk" = "yes" ]; then
+    echo -e "\n\nTLS v1.3 Early Data - PSK"
+    port=0
+    (./examples/server/server -v 4 -s -0 -R $ready_file -p $port 2>&1 | \
+            tee $server_out_file) &
+    server_pid=$!
+    create_port
+    ./examples/client/client -v 4 -s -0 -p $port
+    RESULT=$?
+    remove_ready_file
+    early_data_cnt=`grep 'Early Data' $server_out_file | wc -l`
+    if [ $early_data_cnt -ne 2 ]; then
+        RESULT=1
+    fi
+    if [ $RESULT -ne 0 ]; then
+        echo -e "\n\nIssue with TLS v1.3 Early DAta - session ticket"
+        do_cleanup
+        exit 1
+    fi
+else
+    echo "Early data not available"
+fi
+
 do_cleanup
 
 echo -e "\nALL Tests Passed"

src/internal.c

@@ -14507,18 +14507,31 @@ int DoApplicationData(WOLFSSL* ssl, byte* input, word32* inOutIdx)
 
 #ifdef WOLFSSL_EARLY_DATA
     if (ssl->options.tls1_3 && ssl->options.handShakeDone == 0) {
-        if (ssl->options.side == WOLFSSL_SERVER_END &&
+        int process = 0;
-                          ssl->earlyData != no_early_data &&
+
-                          ssl->options.clientState < CLIENT_FINISHED_COMPLETE) {
+        if (ssl->options.side == WOLFSSL_SERVER_END) {
             ssl->earlyDataSz += ssl->curSize;
-            if (ssl->earlyDataSz <= ssl->options.maxEarlyDataSz) {
+            if ((ssl->earlyData != no_early_data) &&
+                          (ssl->options.clientState == CLIENT_HELLO_COMPLETE)) {
+                process = 1;
+            }
+            if (!process && (ssl->earlyDataSz <= ssl->options.maxEarlyDataSz)) {
                 WOLFSSL_MSG("Ignoring EarlyData!");
                 *inOutIdx = ssl->buffers.inputBuffer.length;
                 return 0;
             }
+            if (ssl->earlyDataSz > ssl->options.maxEarlyDataSz) {
                 WOLFSSL_MSG("Too much EarlyData!");
+                process = 0;
             }
         }
+        if (!process) {
+            WOLFSSL_MSG("Received App data before a handshake completed");
+            SendAlert(ssl, alert_fatal, unexpected_message);
+            return OUT_OF_ORDER_E;
+        }
+    }
+    else
 #endif
     if (ssl->options.handShakeDone == 0) {
         WOLFSSL_MSG("Received App data before a handshake completed");