[thirdparty/openssl.git] / test / ssl-tests / protocol_version.pm

# -*- mode: perl; -*-
# Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html


## Test version negotiation

package ssltests;

use strict;
use warnings;

use List::Util qw/max min/;

use OpenSSL::Test;
use OpenSSL::Test::Utils qw/anydisabled alldisabled disabled/;
setup("no_test_here");

my @tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3");
my @tls_protocols_fips = ("TLSv1.2", "TLSv1.3");
# undef stands for "no limit".
my @min_tls_protocols = (undef, "SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3");
my @min_tls_protocols_fips = (undef, "TLSv1.2", "TLSv1.3");
my @max_tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3", undef);
my @max_tls_protocols_fips = ("TLSv1.2", "TLSv1.3", undef);

my @is_tls_disabled = anydisabled("ssl3", "tls1", "tls1_1", "tls1_2", "tls1_3");
my @is_tls_disabled_fips = anydisabled("tls1_2", "tls1_3");

my $min_tls_enabled; my $max_tls_enabled;
my $min_tls_enabled_fips; my $max_tls_enabled_fips;

# Protocol configuration works in cascades, i.e.,
# $no_tls1_1 disables TLSv1.1 and below.
#
# $min_enabled and $max_enabled will be correct if there is at least one
# protocol enabled.

sub min_prot_enabled {
    my $protref = shift;
    my $disabledref = shift;
    my @protocols = @{$protref};
    my @is_disabled = @{$disabledref};
    my $min_enabled;

    foreach my $i (0..$#protocols) {
        if (!$is_disabled[$i]) {
            $min_enabled = $i;
            last;
        }
    }
    return $min_enabled;
}

sub max_prot_enabled {
    my $protref = shift;
    my $disabledref = shift;
    my @protocols = @{$protref};
    my @is_disabled = @{$disabledref};
    my $max_enabled;

    foreach my $i (0..$#protocols) {
        if (!$is_disabled[$i]) {
            $max_enabled = $i;
        }
    }
    return $max_enabled;
}

$min_tls_enabled = min_prot_enabled(\@tls_protocols, \@is_tls_disabled);
$max_tls_enabled = max_prot_enabled(\@tls_protocols, \@is_tls_disabled);
$min_tls_enabled_fips = min_prot_enabled(\@tls_protocols_fips, \@is_tls_disabled_fips);
$max_tls_enabled_fips = max_prot_enabled(\@tls_protocols_fips, \@is_tls_disabled_fips);


my @dtls_protocols = ("DTLSv1", "DTLSv1.2");
my @dtls_protocols_fips = ("DTLSv1.2");
# undef stands for "no limit".
my @min_dtls_protocols = (undef, "DTLSv1", "DTLSv1.2");
my @min_dtls_protocols_fips = (undef, "DTLSv1.2");
my @max_dtls_protocols = ("DTLSv1", "DTLSv1.2", undef);
my @max_dtls_protocols_fips = ("DTLSv1.2", undef);

my @is_dtls_disabled = anydisabled("dtls1", "dtls1_2");
my @is_dtls_disabled_fips = anydisabled("dtls1_2");

my $min_dtls_enabled; my $max_dtls_enabled;
my $min_dtls_enabled_fips; my $max_dtls_enabled_fips;

# $min_enabled and $max_enabled will be correct if there is at least one
# protocol enabled.
$min_dtls_enabled = min_prot_enabled(\@dtls_protocols, \@is_dtls_disabled);
$max_dtls_enabled = max_prot_enabled(\@dtls_protocols, \@is_dtls_disabled);
$min_dtls_enabled_fips = min_prot_enabled(\@dtls_protocols_fips, \@is_dtls_disabled_fips);
$max_dtls_enabled_fips = max_prot_enabled(\@dtls_protocols_fips, \@is_dtls_disabled_fips);

sub no_tests {
    my ($dtls) = @_;
    return $dtls ? alldisabled("dtls1", "dtls1_2") :
      alldisabled("ssl3", "tls1", "tls1_1", "tls1_2", "tls1_3");
}

sub generate_version_tests {
    my $method = shift;
    my $fips = shift;

    my $dtls = $method eq "DTLS";
    # Don't write the redundant "Method = TLS" into the configuration.
    undef $method if !$dtls;

    my @protocols;
    my @min_protocols;
    my @max_protocols;
    my $min_enabled;
    my $max_enabled;
    if ($fips) {
        @protocols = $dtls ? @dtls_protocols_fips : @tls_protocols_fips;
        @min_protocols = $dtls ? @min_dtls_protocols_fips : @min_tls_protocols_fips;
        @max_protocols = $dtls ? @max_dtls_protocols_fips : @max_tls_protocols_fips;
        $min_enabled  = $dtls ? $min_dtls_enabled_fips : $min_tls_enabled_fips;
        $max_enabled  = $dtls ? $max_dtls_enabled_fips : $max_tls_enabled_fips;
    } else {
        @protocols = $dtls ? @dtls_protocols : @tls_protocols;
        @min_protocols = $dtls ? @min_dtls_protocols : @min_tls_protocols;
        @max_protocols = $dtls ? @max_dtls_protocols : @max_tls_protocols;
        $min_enabled  = $dtls ? $min_dtls_enabled : $min_tls_enabled;
        $max_enabled  = $dtls ? $max_dtls_enabled : $max_tls_enabled;
    }

    if (no_tests($dtls)) {
        return;
    }

    my @tests = ();

    for (my $sctp = 0; $sctp < ($dtls && !disabled("sctp") ? 2 : 1); $sctp++) {
        foreach my $c_min (0..$#min_protocols) {
            my $c_max_min = $c_min == 0 ? 0 : $c_min - 1;
            foreach my $c_max ($c_max_min..$#max_protocols) {
                foreach my $s_min (0..$#min_protocols) {
                    my $s_max_min = $s_min == 0 ? 0 : $s_min - 1;
                    foreach my $s_max ($s_max_min..$#max_protocols) {
                        my ($result, $protocol) =
                            expected_result($c_min, $c_max, $s_min, $s_max,
                                            $min_enabled, $max_enabled,
                                            \@protocols);
                        push @tests, {
                            "name" => "version-negotiation",
                            "client" => {
                                "MinProtocol" => $min_protocols[$c_min],
                                "MaxProtocol" => $max_protocols[$c_max],
                            },
                            "server" => {
                                "MinProtocol" => $min_protocols[$s_min],
                                "MaxProtocol" => $max_protocols[$s_max],
                            },
                            "test" => {
                                "ExpectedResult" => $result,
                                "ExpectedProtocol" => $protocol,
                                "Method" => $method,
                            }
                        };
                        $tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
                    }
                }
            }
        }
    }
    return @tests if disabled("tls1_3") || disabled("tls1_2") || $dtls;

    #Add some version/ciphersuite sanity check tests
    push @tests, {
        "name" => "ciphersuite-sanity-check-client",
        "client" => {
            #Offering only <=TLSv1.2 ciphersuites with TLSv1.3 should fail
            "CipherString" => "AES128-SHA",
            "Ciphersuites" => "",
        },
        "server" => {
            "MaxProtocol" => "TLSv1.2"
        },
        "test" => {
            "ExpectedResult" => "ClientFail",
        }
    };
    push @tests, {
        "name" => "ciphersuite-sanity-check-server",
        "client" => {
            "CipherString" => "AES128-SHA",
            "MaxProtocol" => "TLSv1.2"
        },
        "server" => {
            #Allowing only <=TLSv1.2 ciphersuites with TLSv1.3 should fail
            "CipherString" => "AES128-SHA",
            "Ciphersuites" => "",
        },
        "test" => {
            "ExpectedResult" => "ServerFail",
        }
    };

    return @tests;
}

sub generate_resumption_tests {
    my $method = shift;
    my $fips = shift;

    my $dtls = $method eq "DTLS";
    # Don't write the redundant "Method = TLS" into the configuration.
    undef $method if !$dtls;

    my @protocols;
    my $min_enabled;
    my $max_enabled;

    if ($fips) {
        @protocols = $dtls ? @dtls_protocols_fips : @tls_protocols_fips;
        $min_enabled  = $dtls ? $min_dtls_enabled_fips : $min_tls_enabled_fips;
        $max_enabled = $dtls ? $max_dtls_enabled_fips : $max_tls_enabled_fips;
    } else {
        @protocols = $dtls ? @dtls_protocols : @tls_protocols;
        $min_enabled  = $dtls ? $min_dtls_enabled : $min_tls_enabled;
        $max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
    }

    if (no_tests($dtls)) {
        return;
    }

    my @server_tests = ();
    my @client_tests = ();

    # Obtain the first session against a fixed-version server/client.
    foreach my $original_protocol($min_enabled..$max_enabled) {
        # Upgrade or downgrade the server/client max version support and test
        # that it upgrades, downgrades or resumes the session as well.
        foreach my $resume_protocol($min_enabled..$max_enabled) {
            my $resumption_expected;
            # We should only resume on exact version match.
            if ($original_protocol eq $resume_protocol) {
                $resumption_expected = "Yes";
            } else {
                $resumption_expected = "No";
            }

            for (my $sctp = 0; $sctp < ($dtls && !disabled("sctp") ? 2 : 1);
                 $sctp++) {
                foreach my $ticket ("SessionTicket", "-SessionTicket") {
                    # Client is flexible, server upgrades/downgrades.
                    push @server_tests, {
                        "name" => "resumption",
                        "client" => { },
                        "server" => {
                            "MinProtocol" => $protocols[$original_protocol],
                            "MaxProtocol" => $protocols[$original_protocol],
                            "Options" => $ticket,
                        },
                        "resume_server" => {
                            "MaxProtocol" => $protocols[$resume_protocol],
                            "Options" => $ticket,
                        },
                        "test" => {
                            "ExpectedProtocol" => $protocols[$resume_protocol],
                            "Method" => $method,
                            "HandshakeMode" => "Resume",
                            "ResumptionExpected" => $resumption_expected,
                        }
                    };
                    $server_tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
                    # Server is flexible, client upgrades/downgrades.
                    push @client_tests, {
                        "name" => "resumption",
                        "client" => {
                            "MinProtocol" => $protocols[$original_protocol],
                            "MaxProtocol" => $protocols[$original_protocol],
                        },
                        "server" => {
                            "Options" => $ticket,
                        },
                        "resume_client" => {
                            "MaxProtocol" => $protocols[$resume_protocol],
                        },
                        "test" => {
                            "ExpectedProtocol" => $protocols[$resume_protocol],
                            "Method" => $method,
                            "HandshakeMode" => "Resume",
                            "ResumptionExpected" => $resumption_expected,
                        }
                    };
                    $client_tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
                }
            }
        }
    }

    if (!disabled("tls1_3") && !$dtls) {
        push @client_tests, {
            "name" => "resumption-with-hrr",
            "client" => {
            },
            "server" => {
                "Curves" => disabled("ec") ? "ffdhe3072" : "P-256"
            },
            "resume_client" => {
            },
            "test" => {
                "ExpectedProtocol" => "TLSv1.3",
                "Method" => "TLS",
                "HandshakeMode" => "Resume",
                "ResumptionExpected" => "Yes",
            }
        };
    }

    return (@server_tests, @client_tests);
}

sub expected_result {
    my ($c_min, $c_max, $s_min, $s_max, $min_enabled, $max_enabled,
        $protocols) = @_;

    # Adjust for "undef" (no limit).
    $c_min = $c_min == 0 ? 0 : $c_min - 1;
    $c_max = $c_max == scalar @$protocols ? $c_max - 1 : $c_max;
    $s_min = $s_min == 0 ? 0 : $s_min - 1;
    $s_max = $s_max == scalar @$protocols ? $s_max - 1 : $s_max;

    # We now have at least one protocol enabled, so $min_enabled and
    # $max_enabled are well-defined.
    $c_min = max $c_min, $min_enabled;
    $s_min = max $s_min, $min_enabled;
    $c_max = min $c_max, $max_enabled;
    $s_max = min $s_max, $max_enabled;

    if ($c_min > $c_max) {
        # Client should fail to even send a hello.
        return ("ClientFail", undef);
    } elsif ($s_min > $s_max) {
        # Server has no protocols, should always fail.
        return ("ServerFail", undef);
    } elsif ($s_min > $c_max) {
        # Server doesn't support the client range.
        return ("ServerFail", undef);
    } elsif ($c_min > $s_max) {
        my @prots = @$protocols;
        if ($prots[$c_max] eq "TLSv1.3") {
            # Client will have sent supported_versions, so server will know
            # that there are no overlapping versions.
            return ("ServerFail", undef);
        } else {
            # Server will try with a version that is lower than the lowest
            # supported client version.
            return ("ClientFail", undef);
        }
    } else {
        # Server and client ranges overlap.
        my $max_common = $s_max < $c_max ? $s_max : $c_max;
        return ("Success", $protocols->[$max_common]);
    }
}

1;
Commit	Line	Data
74726750	1	# -- mode: perl; --
33388b44	2	# Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
74726750	3	#
909f1a2e	4	# Licensed under the Apache License 2.0 (the "License"). You may not use
74726750 EK	5	# this file except in compliance with the License. You can obtain a copy
	6	# in the file LICENSE in the source distribution or at
	7	# https://www.openssl.org/source/license.html
	8
	9
	10	## Test version negotiation
	11
	12	package ssltests;
	13
	14	use strict;
	15	use warnings;
	16
	17	use List::Util qw/max min/;
	18
	19	use OpenSSL::Test;
1763ab10	20	use OpenSSL::Test::Utils qw/anydisabled alldisabled disabled/;
74726750 EK	21	setup("no_test_here");
74726750 EK	22
582a17d6	23	my @tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3");
682bc861	24	my @tls_protocols_fips = ("TLSv1.2", "TLSv1.3");
74726750	25	# undef stands for "no limit".
582a17d6	26	my @min_tls_protocols = (undef, "SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3");
682bc861	27	my @min_tls_protocols_fips = (undef, "TLSv1.2", "TLSv1.3");
582a17d6	28	my @max_tls_protocols = ("SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3", undef);
682bc861	29	my @max_tls_protocols_fips = ("TLSv1.2", "TLSv1.3", undef);
74726750	30
582a17d6	31	my @is_tls_disabled = anydisabled("ssl3", "tls1", "tls1_1", "tls1_2", "tls1_3");
682bc861	32	my @is_tls_disabled_fips = anydisabled("tls1_2", "tls1_3");
74726750 EK	33
74726750 EK	34	my $min_tls_enabled; my $max_tls_enabled;
682bc861	35	my $min_tls_enabled_fips; my $max_tls_enabled_fips;
74726750 EK	36
	37	# Protocol configuration works in cascades, i.e.,
	38	# $no_tls1_1 disables TLSv1.1 and below.
	39	#
	40	# $min_enabled and $max_enabled will be correct if there is at least one
	41	# protocol enabled.
682bc861 MC	42
	43	sub min_prot_enabled {
	44	my $protref = shift;
	45	my $disabledref = shift;
	46	my @protocols = @{$protref};
	47	my @is_disabled = @{$disabledref};
	48	my $min_enabled;
	49
	50	foreach my $i (0..$#protocols) {
	51	if (!$is_disabled[$i]) {
	52	$min_enabled = $i;
	53	last;
	54	}
74726750	55	}
682bc861	56	return $min_enabled;
74726750 EK	57	}
74726750 EK	58
682bc861 MC	59	sub max_prot_enabled {
	60	my $protref = shift;
	61	my $disabledref = shift;
	62	my @protocols = @{$protref};
	63	my @is_disabled = @{$disabledref};
	64	my $max_enabled;
	65
	66	foreach my $i (0..$#protocols) {
	67	if (!$is_disabled[$i]) {
	68	$max_enabled = $i;
	69	}
74726750	70	}
682bc861	71	return $max_enabled;
74726750 EK	72	}
74726750 EK	73
682bc861 MC	74	$min_tls_enabled = min_prot_enabled(\@tls_protocols, \@is_tls_disabled);
	75	$max_tls_enabled = max_prot_enabled(\@tls_protocols, \@is_tls_disabled);
	76	$min_tls_enabled_fips = min_prot_enabled(\@tls_protocols_fips, \@is_tls_disabled_fips);
	77	$max_tls_enabled_fips = max_prot_enabled(\@tls_protocols_fips, \@is_tls_disabled_fips);
	78
	79
74726750	80	my @dtls_protocols = ("DTLSv1", "DTLSv1.2");
682bc861	81	my @dtls_protocols_fips = ("DTLSv1.2");
74726750 EK	82	# undef stands for "no limit".
74726750 EK	83	my @min_dtls_protocols = (undef, "DTLSv1", "DTLSv1.2");
682bc861	84	my @min_dtls_protocols_fips = (undef, "DTLSv1.2");
74726750	85	my @max_dtls_protocols = ("DTLSv1", "DTLSv1.2", undef);
682bc861	86	my @max_dtls_protocols_fips = ("DTLSv1.2", undef);
74726750 EK	87
74726750 EK	88	my @is_dtls_disabled = anydisabled("dtls1", "dtls1_2");
682bc861	89	my @is_dtls_disabled_fips = anydisabled("dtls1_2");
74726750 EK	90
74726750 EK	91	my $min_dtls_enabled; my $max_dtls_enabled;
682bc861	92	my $min_dtls_enabled_fips; my $max_dtls_enabled_fips;
74726750 EK	93
	94	# $min_enabled and $max_enabled will be correct if there is at least one
	95	# protocol enabled.
682bc861 MC	96	$min_dtls_enabled = min_prot_enabled(\@dtls_protocols, \@is_dtls_disabled);
	97	$max_dtls_enabled = max_prot_enabled(\@dtls_protocols, \@is_dtls_disabled);
	98	$min_dtls_enabled_fips = min_prot_enabled(\@dtls_protocols_fips, \@is_dtls_disabled_fips);
	99	$max_dtls_enabled_fips = max_prot_enabled(\@dtls_protocols_fips, \@is_dtls_disabled_fips);
74726750	100
590ed3d7 EK	101	sub no_tests {
	102	my ($dtls) = @_;
	103	return $dtls ? alldisabled("dtls1", "dtls1_2") :
582a17d6	104	alldisabled("ssl3", "tls1", "tls1_1", "tls1_2", "tls1_3");
590ed3d7 EK	105	}
	106
	107	sub generate_version_tests {
682bc861 MC	108	my $method = shift;
682bc861 MC	109	my $fips = shift;
74726750 EK	110
	111	my $dtls = $method eq "DTLS";
	112	# Don't write the redundant "Method = TLS" into the configuration.
590ed3d7	113	undef $method if !$dtls;
74726750	114
682bc861 MC	115	my @protocols;
	116	my @min_protocols;
	117	my @max_protocols;
	118	my $min_enabled;
	119	my $max_enabled;
	120	if ($fips) {
	121	@protocols = $dtls ? @dtls_protocols_fips : @tls_protocols_fips;
	122	@min_protocols = $dtls ? @min_dtls_protocols_fips : @min_tls_protocols_fips;
	123	@max_protocols = $dtls ? @max_dtls_protocols_fips : @max_tls_protocols_fips;
	124	$min_enabled = $dtls ? $min_dtls_enabled_fips : $min_tls_enabled_fips;
	125	$max_enabled = $dtls ? $max_dtls_enabled_fips : $max_tls_enabled_fips;
	126	} else {
	127	@protocols = $dtls ? @dtls_protocols : @tls_protocols;
	128	@min_protocols = $dtls ? @min_dtls_protocols : @min_tls_protocols;
	129	@max_protocols = $dtls ? @max_dtls_protocols : @max_tls_protocols;
	130	$min_enabled = $dtls ? $min_dtls_enabled : $min_tls_enabled;
	131	$max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
	132	}
74726750	133
590ed3d7	134	if (no_tests($dtls)) {
74726750 EK	135	return;
	136	}
	137
	138	my @tests = ();
	139
00da4f4d MC	140	for (my $sctp = 0; $sctp < ($dtls && !disabled("sctp") ? 2 : 1); $sctp++) {
	141	foreach my $c_min (0..$#min_protocols) {
	142	my $c_max_min = $c_min == 0 ? 0 : $c_min - 1;
	143	foreach my $c_max ($c_max_min..$#max_protocols) {
	144	foreach my $s_min (0..$#min_protocols) {
	145	my $s_max_min = $s_min == 0 ? 0 : $s_min - 1;
	146	foreach my $s_max ($s_max_min..$#max_protocols) {
	147	my ($result, $protocol) =
	148	expected_result($c_min, $c_max, $s_min, $s_max,
	149	$min_enabled, $max_enabled,
	150	\@protocols);
	151	push @tests, {
	152	"name" => "version-negotiation",
	153	"client" => {
	154	"MinProtocol" => $min_protocols[$c_min],
	155	"MaxProtocol" => $max_protocols[$c_max],
	156	},
	157	"server" => {
	158	"MinProtocol" => $min_protocols[$s_min],
	159	"MaxProtocol" => $max_protocols[$s_max],
	160	},
	161	"test" => {
	162	"ExpectedResult" => $result,
	163	"ExpectedProtocol" => $protocol,
	164	"Method" => $method,
	165	}
	166	};
	167	$tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
	168	}
74726750 EK	169	}
	170	}
	171	}
	172	}
975922fd MC	173	return @tests if disabled("tls1_3") \|\| disabled("tls1_2") \|\| $dtls;
	174
	175	#Add some version/ciphersuite sanity check tests
	176	push @tests, {
	177	"name" => "ciphersuite-sanity-check-client",
	178	"client" => {
	179	#Offering only <=TLSv1.2 ciphersuites with TLSv1.3 should fail
	180	"CipherString" => "AES128-SHA",
f865b081	181	"Ciphersuites" => "",
975922fd MC	182	},
	183	"server" => {
	184	"MaxProtocol" => "TLSv1.2"
	185	},
	186	"test" => {
	187	"ExpectedResult" => "ClientFail",
	188	}
	189	};
	190	push @tests, {
	191	"name" => "ciphersuite-sanity-check-server",
	192	"client" => {
	193	"CipherString" => "AES128-SHA",
	194	"MaxProtocol" => "TLSv1.2"
	195	},
	196	"server" => {
	197	#Allowing only <=TLSv1.2 ciphersuites with TLSv1.3 should fail
	198	"CipherString" => "AES128-SHA",
f865b081	199	"Ciphersuites" => "",
975922fd MC	200	},
	201	"test" => {
	202	"ExpectedResult" => "ServerFail",
	203	}
	204	};
	205
74726750 EK	206	return @tests;
	207	}
	208
590ed3d7	209	sub generate_resumption_tests {
682bc861 MC	210	my $method = shift;
682bc861 MC	211	my $fips = shift;
590ed3d7 EK	212
	213	my $dtls = $method eq "DTLS";
	214	# Don't write the redundant "Method = TLS" into the configuration.
	215	undef $method if !$dtls;
	216
682bc861 MC	217	my @protocols;
	218	my $min_enabled;
	219	my $max_enabled;
	220
	221	if ($fips) {
	222	@protocols = $dtls ? @dtls_protocols_fips : @tls_protocols_fips;
	223	$min_enabled = $dtls ? $min_dtls_enabled_fips : $min_tls_enabled_fips;
	224	$max_enabled = $dtls ? $max_dtls_enabled_fips : $max_tls_enabled_fips;
	225	} else {
	226	@protocols = $dtls ? @dtls_protocols : @tls_protocols;
	227	$min_enabled = $dtls ? $min_dtls_enabled : $min_tls_enabled;
	228	$max_enabled = $dtls ? $max_dtls_enabled : $max_tls_enabled;
	229	}
590ed3d7 EK	230
	231	if (no_tests($dtls)) {
	232	return;
	233	}
	234
11279b13 EK	235	my @server_tests = ();
11279b13 EK	236	my @client_tests = ();
590ed3d7	237
11279b13	238	# Obtain the first session against a fixed-version server/client.
84a68336	239	foreach my $original_protocol($min_enabled..$max_enabled) {
11279b13	240	# Upgrade or downgrade the server/client max version support and test
590ed3d7	241	# that it upgrades, downgrades or resumes the session as well.
84a68336	242	foreach my $resume_protocol($min_enabled..$max_enabled) {
590ed3d7 EK	243	my $resumption_expected;
	244	# We should only resume on exact version match.
	245	if ($original_protocol eq $resume_protocol) {
	246	$resumption_expected = "Yes";
	247	} else {
	248	$resumption_expected = "No";
	249	}
	250
cf156009 MC	251	for (my $sctp = 0; $sctp < ($dtls && !disabled("sctp") ? 2 : 1);
	252	$sctp++) {
	253	foreach my $ticket ("SessionTicket", "-SessionTicket") {
	254	# Client is flexible, server upgrades/downgrades.
	255	push @server_tests, {
	256	"name" => "resumption",
	257	"client" => { },
	258	"server" => {
	259	"MinProtocol" => $protocols[$original_protocol],
	260	"MaxProtocol" => $protocols[$original_protocol],
	261	"Options" => $ticket,
	262	},
	263	"resume_server" => {
	264	"MaxProtocol" => $protocols[$resume_protocol],
6cc0b3c2	265	"Options" => $ticket,
cf156009 MC	266	},
	267	"test" => {
	268	"ExpectedProtocol" => $protocols[$resume_protocol],
	269	"Method" => $method,
	270	"HandshakeMode" => "Resume",
	271	"ResumptionExpected" => $resumption_expected,
	272	}
	273	};
	274	$server_tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
	275	# Server is flexible, client upgrades/downgrades.
	276	push @client_tests, {
	277	"name" => "resumption",
	278	"client" => {
	279	"MinProtocol" => $protocols[$original_protocol],
	280	"MaxProtocol" => $protocols[$original_protocol],
	281	},
	282	"server" => {
	283	"Options" => $ticket,
	284	},
	285	"resume_client" => {
	286	"MaxProtocol" => $protocols[$resume_protocol],
	287	},
	288	"test" => {
	289	"ExpectedProtocol" => $protocols[$resume_protocol],
	290	"Method" => $method,
	291	"HandshakeMode" => "Resume",
	292	"ResumptionExpected" => $resumption_expected,
	293	}
	294	};
	295	$client_tests[-1]{"test"}{"UseSCTP"} = "Yes" if $sctp;
	296	}
590ed3d7 EK	297	}
	298	}
	299	}
	300
1763ab10 MC	301	if (!disabled("tls1_3") && !$dtls) {
	302	push @client_tests, {
	303	"name" => "resumption-with-hrr",
	304	"client" => {
	305	},
	306	"server" => {
dbc6268f	307	"Curves" => disabled("ec") ? "ffdhe3072" : "P-256"
1763ab10 MC	308	},
	309	"resume_client" => {
	310	},
	311	"test" => {
	312	"ExpectedProtocol" => "TLSv1.3",
	313	"Method" => "TLS",
	314	"HandshakeMode" => "Resume",
	315	"ResumptionExpected" => "Yes",
	316	}
	317	};
	318	}
	319
11279b13	320	return (@server_tests, @client_tests);
590ed3d7 EK	321	}
590ed3d7 EK	322
74726750 EK	323	sub expected_result {
	324	my ($c_min, $c_max, $s_min, $s_max, $min_enabled, $max_enabled,
	325	$protocols) = @_;
	326
	327	# Adjust for "undef" (no limit).
	328	$c_min = $c_min == 0 ? 0 : $c_min - 1;
	329	$c_max = $c_max == scalar @$protocols ? $c_max - 1 : $c_max;
	330	$s_min = $s_min == 0 ? 0 : $s_min - 1;
	331	$s_max = $s_max == scalar @$protocols ? $s_max - 1 : $s_max;
	332
	333	# We now have at least one protocol enabled, so $min_enabled and
	334	# $max_enabled are well-defined.
	335	$c_min = max $c_min, $min_enabled;
	336	$s_min = max $s_min, $min_enabled;
	337	$c_max = min $c_max, $max_enabled;
	338	$s_max = min $s_max, $max_enabled;
	339
	340	if ($c_min > $c_max) {
	341	# Client should fail to even send a hello.
83964ca0	342	return ("ClientFail", undef);
74726750 EK	343	} elsif ($s_min > $s_max) {
	344	# Server has no protocols, should always fail.
	345	return ("ServerFail", undef);
	346	} elsif ($s_min > $c_max) {
	347	# Server doesn't support the client range.
	348	return ("ServerFail", undef);
	349	} elsif ($c_min > $s_max) {
582a17d6	350	my @prots = @$protocols;
7b21c00e MC	351	if ($prots[$c_max] eq "TLSv1.3") {
	352	# Client will have sent supported_versions, so server will know
	353	# that there are no overlapping versions.
	354	return ("ServerFail", undef);
582a17d6 MC	355	} else {
	356	# Server will try with a version that is lower than the lowest
	357	# supported client version.
	358	return ("ClientFail", undef);
	359	}
74726750 EK	360	} else {
	361	# Server and client ranges overlap.
	362	my $max_common = $s_max < $c_max ? $s_max : $c_max;
	363	return ("Success", $protocols->[$max_common]);
	364	}
	365	}
	366
	367	1;