Add tst_QDtls auto-test

The test is somewhat similar to tst_QSslSocket but is smaller (in scope, will
grow in future), it has no QTcpSocket/QAbstractSocket-specific things and
has more DTLS-specific code. At the moment it does not use our network
test server, all work is done in the same process with two QUdpSockets
and two QDtls objects. We test (both on client/server ends):
 - parameters validation (for all functions that do this) and
   the correctness of error codes/handshake states
 - handshake procedure (with/out certificates and with pre-shared keys)
 - timeouts and re-transmissions during (D)TLS handshake
 - peer verification (and related verification errors)
 - aborted/resumed handshake
 - encrypted I/O
 - DTLS shutdown

For now, this test is OpenSSL-only.

Task-number: QTBUG-67597
Change-Id: I27006bfe3d6c02b89596889e8482a782c630402a
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

tests/auto/network/ssl/qdtls/certs/bogus-ca.crt

@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----
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+f4HXoPvSGg==
+-----END CERTIFICATE-----

tests/auto/network/ssl/qdtls/certs/bogus-ca.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

tests/auto/network/ssl/qdtls/certs/bogus-client.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

tests/auto/network/ssl/qdtls/certs/bogus-client.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

tests/auto/network/ssl/qdtls/certs/bogus-server.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

tests/auto/network/ssl/qdtls/certs/bogus-server.key

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

tests/auto/network/ssl/qdtls/certs/fake-login.live.com.key

@@ -0,0 +1,15 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

tests/auto/network/ssl/qdtls/certs/fake-login.live.com.pem

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
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+EQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBXaWRnaXRzIFB0
+eSBMdGQxFzAVBgNVBAMTDmxvZ2luLmxpdmUuY29tghEAsLcTPtCW+bVvrpHIdL06
+wDAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBQUAA4GBAD+2HT4GSHHKCdbl9VkX
+zsl+D+drMm2b0ksxz9SgPihP7aW50EEIJDEEihNMTa27mhpeOXHc/sLqDi4ECUao
+/0Ns/5uoVuAIrAKCydmtPsonVFh9XWjyrfUzPOHAc9p2bmJ1i9a3kTsLB6jlrVDO
+VufGzsowHlHZ0TtKf5omojU5
+-----END CERTIFICATE-----

tests/auto/network/ssl/qdtls/certs/fluke.cert

@@ -0,0 +1,75 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 0 (0x0)
+        Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C=NO, ST=Oslo, L=Nydalen, O=Nokia Corporation and/or its subsidiary(-ies), OU=Development, CN=fluke.troll.no/emailAddress=ahanssen@trolltech.com
+        Validity
+            Not Before: Dec  4 01:10:32 2007 GMT
+            Not After : Apr 21 01:10:32 2035 GMT
+        Subject: C=NO, ST=Oslo, O=Nokia Corporation and/or its subsidiary(-ies), OU=Development, CN=fluke.troll.no
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+            RSA Public Key: (1024 bit)
+                Modulus (1024 bit):
+                    00:a7:c8:a0:4a:c4:19:05:1b:66:ba:32:e2:d2:f1:
+                    1c:6f:17:82:e4:39:2e:01:51:90:db:04:34:32:11:
+                    21:c2:0d:6f:59:d8:53:90:54:3f:83:8f:a9:d3:b3:
+                    d5:ee:1a:9b:80:ae:c3:25:c9:5e:a5:af:4b:60:05:
+                    aa:a0:d1:91:01:1f:ca:04:83:e3:58:1c:99:32:45:
+                    84:70:72:58:03:98:4a:63:8b:41:f5:08:49:d2:91:
+                    02:60:6b:e4:64:fe:dd:a0:aa:74:08:e9:34:4c:91:
+                    5f:12:3d:37:4d:54:2c:ad:7f:5b:98:60:36:02:8c:
+                    3b:f6:45:f3:27:6a:9b:94:9d
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints:
+                CA:FALSE
+            Netscape Comment:
+                OpenSSL Generated Certificate
+            X509v3 Subject Key Identifier:
+                21:85:04:3D:23:01:66:E5:F7:9F:1A:84:24:8A:AF:0A:79:F4:E5:AC
+            X509v3 Authority Key Identifier:
+                DirName:/C=NO/ST=Oslo/L=Nydalen/O=Nokia Corporation and/or its subsidiary(-ies)/OU=Development/CN=fluke.troll.no/emailAddress=ahanssen@trolltech.com
+                serial:8E:A8:B4:E8:91:B7:54:2E
+
+    Signature Algorithm: sha1WithRSAEncryption
+        6d:57:5f:d1:05:43:f0:62:05:ec:2a:71:a5:dc:19:08:f2:c4:
+        a6:bd:bb:25:d9:ca:89:01:0e:e4:cf:1f:c1:8c:c8:24:18:35:
+        53:59:7b:c0:43:b4:32:e6:98:b2:a6:ef:15:05:0b:48:5f:e1:
+        a0:0c:97:a9:a1:77:d8:35:18:30:bc:a9:8f:d3:b7:54:c7:f1:
+        a9:9e:5d:e6:19:bf:f6:3c:5b:2b:d8:e4:3e:62:18:88:8b:d3:
+        24:e1:40:9b:0c:e6:29:16:62:ab:ea:05:24:70:36:aa:55:93:
+        ef:02:81:1b:23:10:a2:04:eb:56:95:75:fc:f8:94:b1:5d:42:
+        c5:3f:36:44:85:5d:3a:2e:90:46:8a:a2:b9:6f:87:ae:0c:15:
+        40:19:31:90:fc:3b:25:bb:ae:f1:66:13:0d:85:90:d9:49:34:
+        8f:f2:5d:f9:7a:db:4d:5d:27:f6:76:9d:35:8c:06:a6:4c:a3:
+        b1:b2:b6:6f:1d:d7:a3:00:fd:72:eb:9e:ea:44:a1:af:21:34:
+        7d:c7:42:e2:49:91:19:8b:c0:ad:ba:82:80:a8:71:70:f4:35:
+        31:91:63:84:20:95:e9:60:af:64:8b:cc:ff:3d:8a:76:74:3d:
+        c8:55:6d:e4:8e:c3:2b:1c:e8:42:18:ae:9f:e6:6b:9c:34:06:
+        ec:6a:f2:c3
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

tests/auto/network/ssl/qdtls/certs/fluke.key

@@ -0,0 +1,15 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----

tests/auto/network/ssl/qdtls/certs/ss-srv-cert.pem

@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

tests/auto/network/ssl/qdtls/certs/ss-srv-key.pem

@@ -0,0 +1,18 @@
+-----BEGIN ENCRYPTED PRIVATE KEY-----
+MIIC1DBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIBoCUfXYbG50CAggA
+MAwGCCqGSIb3DQIJBQAwFAYIKoZIhvcNAwcECHsb5ejBIDukBIICgFiMs6LbW0L4
+fxGDVNQWEbWf+1h4HJZsetWVqX5kh+9R3yfvK6vMVI5EQZ3mm8t5NDIKRFON6dN/
+uKGvZA+4vR6Vc5yeOOzL6sC8NsIU6eJOzkxXdyBahBHORm51dJCRtCdsoaWnx00I
+jEAIvdv/dWh+kx9iMF6cZeOvIXbdVPuadjeh62cjPU/zyZSKCFd59zqWRMvIMIIM
+kUOy2In5dVBb8/W9Zz0S8OG7KRJ+KdxxR5ev324L70XtRbb/tDVnGuMz+K83xbQC
+ySJgIEvaz9lmhFeWiJ9HPGqcYtMAUUk4XgF5mcQDete8uCndDnxCy3uCyNxWtIm3
+dXRYzWZh+nbsbjYQWT3Lo3z3zkchB8vNDBfVcp6m0nx7spaUFlptrXujYKU9VQTK
+2vAMhT9uUstLaHm+TEI1SuDBeugbvxy1DNI5lEQ3SG50L8r0m/OuQkV9zPVreHLX
+nJdx7POS69WW+yac2SJX9mMSXICksLvaSGxSnFf1hMyozIp3xM4jGsxV+ckGw2I/
+CNUW2QHMuJ2/AvZo8cJY5iwbRgCaewAKkUiPZbGMDLeRapm9nrRFyTkLGyjI+4wG
+wByzJ8ZZ2IlnZexXbcs0o8qoFmUxgA2R5Q3AvDYAg9/XGWtRcbIOhly4gRv4B/OF
+pWfqYrCK6ZbTNSNZNifMDJfjx5T9qSnnLbAZRjuVwOgvqWTcBZpzpn97YS7XnsrU
+5qMOiaP+VgpWeO2Fcf5zq9CJaBLO8sBUWWJW7mPgrOpxbBOio6x1GbRMT2niOiPN
+wSXWPfw5Kp/P43ORJEttudEGJYpIMAzZ88hmF2j8n3hGC9FHAw5RGaV+3vsonsZq
+iwE2rYxs3RI=
+-----END ENCRYPTED PRIVATE KEY-----

tests/auto/network/ssl/qdtls/qdtls.pro

@@ -0,0 +1,17 @@
+CONFIG += testcase
+
+SOURCES += tst_qdtls.cpp
+win32:LIBS += -lws2_32
+QT = core network-private testlib
+
+TARGET = tst_qdtls
+
+win32 {
+    CONFIG(debug, debug|release) {
+        DESTDIR = debug
+    } else {
+        DESTDIR = release
+    }
+}
+
+TESTDATA += certs

tests/auto/network/ssl/ssl.pro

@@ -15,9 +15,11 @@ qtConfig(ssl) {
             qsslsocket \
             qsslsocket_onDemandCertificates_member \
             qsslsocket_onDemandCertificates_static
+
         qtConfig(openssl) {
             SUBDIRS += \
-                qdtlscookie
+                qdtlscookie \
+                qdtls
         }
     }
 }