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certificates/policy/engine_test.go
Herman Slatman a2cfbe3d54
Fix (part of) PR comments
2022-04-21 12:14:03 +02:00

2846 lines
66 KiB
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package policy
import (
"crypto/x509"
"crypto/x509/pkix"
"net"
"net/url"
"testing"
"github.com/google/go-cmp/cmp"
"golang.org/x/crypto/ssh"
"github.com/smallstep/assert"
)
// TODO(hs): the functionality in the policy engine is a nice candidate for trying fuzzing on
// TODO(hs): more complex test use cases that combine multiple names and permitted/excluded entries?
func TestNamePolicyEngine_matchDomainConstraint(t *testing.T) {
tests := []struct {
name string
allowLiteralWildcardNames bool
domain string
constraint string
want bool
wantErr bool
}{
{
name: "fail/wildcard",
domain: "host.local",
constraint: ".example.com", // internally we're using the x509 period prefix as the indicator for exactly one subdomain
want: false,
wantErr: false,
},
{
name: "fail/wildcard-literal",
domain: "*.example.com",
constraint: ".example.com", // internally we're using the x509 period prefix as the indicator for exactly one subdomain
want: false,
wantErr: false,
},
{
name: "fail/specific-domain",
domain: "www.example.com",
constraint: "host.example.com",
want: false,
wantErr: false,
},
{
name: "fail/single-whitespace-domain",
domain: " ",
constraint: "host.example.com",
want: false,
wantErr: false,
},
{
name: "fail/period-domain",
domain: ".host.example.com",
constraint: ".example.com",
want: false,
wantErr: false,
},
{
name: "fail/wrong-asterisk-prefix",
domain: "*Xexample.com",
constraint: ".example.com",
want: false,
wantErr: false,
},
{
name: "fail/asterisk-in-domain",
domain: "e*ample.com",
constraint: ".com",
want: false,
wantErr: false,
},
{
name: "fail/asterisk-label",
domain: "example.*.local",
constraint: ".local",
want: false,
wantErr: false,
},
{
name: "fail/multiple-periods",
domain: "example.local",
constraint: "..local",
want: false,
wantErr: false,
},
{
name: "fail/error-parsing-domain",
domain: string(byte(0)),
constraint: ".local",
want: false,
wantErr: true,
},
{
name: "fail/error-parsing-constraint",
domain: "example.local",
constraint: string(byte(0)),
want: false,
wantErr: true,
},
{
name: "fail/no-subdomain",
domain: "local",
constraint: ".local",
want: false,
wantErr: false,
},
{
name: "fail/too-many-subdomains",
domain: "www.example.local",
constraint: ".local",
want: false,
wantErr: false,
},
{
name: "fail/wrong-domain",
domain: "example.notlocal",
constraint: ".local",
want: false,
wantErr: false,
},
{
name: "false/idna-internationalized-domain-name",
domain: "JP納豆.例.jp", // Example value from https://www.w3.org/International/articles/idn-and-iri/
constraint: ".例.jp",
want: false,
wantErr: true,
},
{
name: "false/idna-internationalized-domain-name-constraint",
domain: "xn--jp-cd2fp15c.xn--fsq.jp", // Example value from https://www.w3.org/International/articles/idn-and-iri/
constraint: ".例.jp",
want: false,
wantErr: true,
},
{
name: "ok/empty-constraint",
domain: "www.example.com",
constraint: "",
want: true,
wantErr: false,
},
{
name: "ok/wildcard",
domain: "www.example.com",
constraint: ".example.com", // internally we're using the x509 period prefix as the indicator for exactly one subdomain
want: true,
wantErr: false,
},
{
name: "ok/wildcard-literal",
allowLiteralWildcardNames: true,
domain: "*.example.com", // specifically allowed using an option on the NamePolicyEngine
constraint: ".example.com", // internally we're using the x509 period prefix as the indicator for exactly one subdomain
want: true,
wantErr: false,
},
{
name: "ok/specific-domain",
domain: "www.example.com",
constraint: "www.example.com",
want: true,
wantErr: false,
},
{
name: "ok/different-case",
domain: "WWW.EXAMPLE.com",
constraint: "www.example.com",
want: true,
wantErr: false,
},
{
name: "ok/idna-internationalized-domain-name-punycode",
domain: "xn--jp-cd2fp15c.xn--fsq.jp", // Example value from https://www.w3.org/International/articles/idn-and-iri/
constraint: ".xn--fsq.jp",
want: true,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
engine := NamePolicyEngine{
allowLiteralWildcardNames: tt.allowLiteralWildcardNames,
}
got, err := engine.matchDomainConstraint(tt.domain, tt.constraint)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.matchDomainConstraint() error = %v, wantErr %v", err, tt.wantErr)
return
}
if got != tt.want {
t.Errorf("NamePolicyEngine.matchDomainConstraint() = %v, want %v", got, tt.want)
}
})
}
}
func Test_matchIPConstraint(t *testing.T) {
nat64IP, nat64Net, err := net.ParseCIDR("64:ff9b::/96")
assert.FatalError(t, err)
tests := []struct {
name string
ip net.IP
constraint *net.IPNet
want bool
wantErr bool
}{
{
name: "false/ipv4-in-ipv6-nat64",
ip: net.ParseIP("192.0.2.128"),
constraint: nat64Net,
want: false,
wantErr: false,
},
{
name: "ok/ipv4",
ip: net.ParseIP("127.0.0.1"),
constraint: &net.IPNet{
IP: net.ParseIP("127.0.0.0"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
want: true,
wantErr: false,
},
{
name: "ok/ipv6",
ip: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7335"),
constraint: &net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
want: true,
wantErr: false,
},
{
name: "ok/ipv4-in-ipv6", // ipv4 in ipv6 addresses are considered the same in the current implementation, because Go parses them as IPv4
ip: net.ParseIP("::ffff:192.0.2.128"),
constraint: &net.IPNet{
IP: net.ParseIP("192.0.2.0"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
want: true,
wantErr: false,
},
{
name: "ok/ipv4-in-ipv6-nat64-fixed-ip",
ip: nat64IP,
constraint: nat64Net,
want: true,
wantErr: false,
},
{
name: "ok/ipv4-in-ipv6-nat64",
ip: net.ParseIP("64:ff9b::192.0.2.129"),
constraint: nat64Net,
want: true,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := matchIPConstraint(tt.ip, tt.constraint)
if (err != nil) != tt.wantErr {
t.Errorf("matchIPConstraint() error = %v, wantErr %v", err, tt.wantErr)
return
}
if got != tt.want {
t.Errorf("matchIPConstraint() = %v, want %v", got, tt.want)
}
})
}
}
func TestNamePolicyEngine_matchEmailConstraint(t *testing.T) {
tests := []struct {
name string
engine *NamePolicyEngine
mailbox rfc2821Mailbox
constraint string
want bool
wantErr bool
}{
{
name: "fail/asterisk-prefix",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "*@example.com",
want: false,
wantErr: true,
},
{
name: "fail/asterisk-label",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "@host.*.example.com",
want: false,
wantErr: true,
},
{
name: "fail/asterisk-inside-local",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "m*il@local",
want: false,
wantErr: true,
},
{
name: "fail/asterisk-inside-domain",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "@h*st.example.com",
want: false,
wantErr: true,
},
{
name: "fail/parse-email",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "@example.com",
want: false,
wantErr: true,
},
{
name: "fail/wildcard",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "example.com",
want: false,
wantErr: false,
},
{
name: "fail/wildcard-x509-period",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: ".local", // "wildcard" for the local domain; requires exactly 1 subdomain
want: false,
wantErr: false,
},
{
name: "fail/specific-mail-wrong-domain",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "mail@example.com",
want: false,
wantErr: false,
},
{
name: "fail/specific-mail-wrong-local",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "root",
domain: "example.com",
},
constraint: "mail@example.com",
want: false,
wantErr: false,
},
{
name: "ok/wildcard",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "local", // "wildcard" for the local domain
want: true,
wantErr: false,
},
{
name: "ok/wildcard-x509-period",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "example.local",
},
constraint: ".local", // "wildcard" for the local domain; requires exactly 1 subdomain
want: true,
wantErr: false,
},
{
name: "ok/specific-mail",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "local",
},
constraint: "mail@local",
want: true,
wantErr: false,
},
{
name: "ok/wildcard-tld",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "example.com",
},
constraint: "example.com", // "wildcard" for 'example.com'
want: true,
wantErr: false,
},
{
name: "ok/different-case",
engine: &NamePolicyEngine{},
mailbox: rfc2821Mailbox{
local: "mail",
domain: "EXAMPLE.com",
},
constraint: "example.com", // "wildcard" for 'example.com'
want: true,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := tt.engine.matchEmailConstraint(tt.mailbox, tt.constraint)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.matchEmailConstraint() error = %v, wantErr %v", err, tt.wantErr)
return
}
if got != tt.want {
t.Errorf("NamePolicyEngine.matchEmailConstraint() = %v, want %v", got, tt.want)
}
})
}
}
func TestNamePolicyEngine_matchURIConstraint(t *testing.T) {
tests := []struct {
name string
engine *NamePolicyEngine
uri *url.URL
constraint string
want bool
wantErr bool
}{
{
name: "fail/empty-host",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "",
},
constraint: ".local",
want: false,
wantErr: true,
},
{
name: "fail/host-with-asterisk-prefix",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "*.local",
},
constraint: ".local",
want: false,
wantErr: true,
},
{
name: "fail/host-with-asterisk-label",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "host.*.local",
},
constraint: ".local",
want: false,
wantErr: true,
},
{
name: "fail/host-with-asterisk-inside",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "h*st.local",
},
constraint: ".local",
want: false,
wantErr: true,
},
{
name: "fail/wildcard",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "www.example.notlocal",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: false,
wantErr: false,
},
{
name: "fail/wildcard-subdomains-too-deep",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "www.sub.example.local",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: false,
wantErr: false,
},
{
name: "fail/host-with-port-split-error",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "www.example.local::8080",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: false,
wantErr: true,
},
{
name: "fail/host-with-ipv4",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "127.0.0.1",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: false,
wantErr: true,
},
{
name: "fail/host-with-ipv6",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "[2001:0db8:85a3:0000:0000:8a2e:0370:7334]",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: false,
wantErr: true,
},
{
name: "ok/wildcard",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "www.example.local",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: true,
wantErr: false,
},
{
name: "ok/host-with-port",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "www.example.local:8080",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: true,
wantErr: false,
},
{
name: "ok/different-case",
engine: &NamePolicyEngine{},
uri: &url.URL{
Scheme: "https",
Host: "www.EXAMPLE.local",
},
constraint: ".example.local", // using x509 period as the "wildcard"; expects a single subdomain
want: true,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := tt.engine.matchURIConstraint(tt.uri, tt.constraint)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.matchURIConstraint() error = %v, wantErr %v", err, tt.wantErr)
return
}
if got != tt.want {
t.Errorf("NamePolicyEngine.matchURIConstraint() = %v, want %v", got, tt.want)
}
})
}
}
func extractSANs(cert *x509.Certificate, includeSubject bool) []string {
sans := []string{}
sans = append(sans, cert.DNSNames...)
for _, ip := range cert.IPAddresses {
sans = append(sans, ip.String())
}
sans = append(sans, cert.EmailAddresses...)
for _, uri := range cert.URIs {
sans = append(sans, uri.String())
}
if includeSubject && cert.Subject.CommonName != "" {
sans = append(sans, cert.Subject.CommonName)
}
return sans
}
func TestNamePolicyEngine_X509_AllAllowed(t *testing.T) {
tests := []struct {
name string
options []NamePolicyOption
cert *x509.Certificate
want bool
wantErr bool
}{
// SINGLE SAN TYPE PERMITTED FAILURE TESTS
{
name: "fail/dns-permitted",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"www.example.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-wildcard-literal-x509",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.x509local"),
},
cert: &x509.Certificate{
DNSNames: []string{
"*.x509local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-single-host",
options: []NamePolicyOption{
WithPermittedDNSDomains("host.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"differenthost.local"},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-no-label",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"local"},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-empty-label",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"www..local"},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-dot-domain",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{
".local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-wildcard-multiple-subdomains",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{
"sub.example.local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-wildcard-literal",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{
"*.local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.豆.jp"),
},
cert: &x509.Certificate{
DNSNames: []string{
string(byte(0)) + ".例.jp",
},
},
want: false,
wantErr: true,
},
{
name: "fail/ipv4-permitted",
options: []NamePolicyOption{
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("1.1.1.1")},
},
want: false,
wantErr: true,
},
{
name: "fail/ipv6-permitted",
options: []NamePolicyOption{
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("3001:0db8:85a3:0000:0000:8a2e:0370:7334")},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-wildcard",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"test@local.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-wildcard-x509",
options: []NamePolicyOption{
WithPermittedEmailAddresses("example.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"test@local.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-specific-mailbox",
options: []NamePolicyOption{
WithPermittedEmailAddresses("test@local.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"root@local.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-wildcard-subdomain",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"test@sub.example.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@例.jp"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"bücher@例.jp"},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-idna-internationalized-domain-rfc822",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@例.jp"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"bücher@例.jp" + string(byte(0))},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-idna-internationalized-domain-ascii",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@例.jp"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@xn---bla.jp"},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted-domain-wildcard",
options: []NamePolicyOption{
WithPermittedURIDomains("*.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "example.com",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted",
options: []NamePolicyOption{
WithPermittedURIDomains("test.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "bad.local",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted-with-literal-wildcard", // don't allow literal wildcard in URI, e.g. xxxx://*.domain.tld
options: []NamePolicyOption{
WithPermittedURIDomains("*.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "*.local",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedURIDomains("*.bücher.example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "abc.bücher.example.com",
},
},
},
want: false,
wantErr: true,
},
// SINGLE SAN TYPE EXCLUDED FAILURE TESTS
{
name: "fail/dns-excluded",
options: []NamePolicyOption{
WithExcludedDNSDomains("*.example.com"),
},
cert: &x509.Certificate{
DNSNames: []string{"www.example.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-excluded-single-host",
options: []NamePolicyOption{
WithExcludedDNSDomains("host.example.com"),
},
cert: &x509.Certificate{
DNSNames: []string{"host.example.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/ipv4-excluded",
options: []NamePolicyOption{
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
},
want: false,
wantErr: true,
},
{
name: "fail/ipv6-excluded",
options: []NamePolicyOption{
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334")},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-excluded",
options: []NamePolicyOption{
WithExcludedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@example.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-excluded",
options: []NamePolicyOption{
WithExcludedURIDomains("*.example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-excluded-with-literal-wildcard", // don't allow literal wildcard in URI, e.g. xxxx://*.domain.tld
options: []NamePolicyOption{
WithExcludedURIDomains("*.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "*.local",
},
},
},
want: false,
wantErr: true,
},
// SUBJECT FAILURE TESTS
{
name: "fail/subject-dns-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "example.notlocal",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-dns-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedDNSDomains("*.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "example.local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-ipv4-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "10.10.10.10",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-ipv4-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "127.0.0.30",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-ipv6-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "2002:0db8:85a3:0000:0000:8a2e:0370:7339",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-ipv6-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "2001:0db8:85a3:0000:0000:8a2e:0370:7339",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-email-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedEmailAddresses("@example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "mail@smallstep.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-email-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedEmailAddresses("@example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "mail@example.local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-uri-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedURIDomains("*.example.com"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "https://www.google.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/subject-uri-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedURIDomains("*.example.com"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "https://www.example.com",
},
},
want: false,
wantErr: true,
},
// DIFFERENT SAN PERMITTED FAILURE TESTS
{
name: "fail/dns-permitted-with-ip-name", // when only DNS is permitted, IPs are not allowed.
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-with-mail", // when only DNS is permitted, mails are not allowed.
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@smallstep.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/dns-permitted-with-uri", // when only DNS is permitted, URIs are not allowed.
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/ip-permitted-with-dns-name", // when only IP is permitted, DNS names are not allowed.
options: []NamePolicyOption{
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
DNSNames: []string{"www.example.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/ip-permitted-with-mail", // when only IP is permitted, mails are not allowed.
options: []NamePolicyOption{
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@smallstep.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/ip-permitted-with-uri", // when only IP is permitted, URIs are not allowed.
options: []NamePolicyOption{
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-with-dns-name", // when only mail is permitted, DNS names are not allowed.
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
DNSNames: []string{"www.example.com"},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-with-ip", // when only mail is permitted, IPs are not allowed.
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{
net.ParseIP("127.0.0.1"),
},
},
want: false,
wantErr: true,
},
{
name: "fail/mail-permitted-with-uri", // when only mail is permitted, URIs are not allowed.
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted-with-dns-name", // when only URI is permitted, DNS names are not allowed.
options: []NamePolicyOption{
WithPermittedURIDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"host.local"},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted-with-ip-name", // when only URI is permitted, IPs are not allowed.
options: []NamePolicyOption{
WithPermittedURIDomains("*.local"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{
net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
},
},
want: false,
wantErr: true,
},
{
name: "fail/uri-permitted-with-ip-name", // when only URI is permitted, mails are not allowed.
options: []NamePolicyOption{
WithPermittedURIDomains("*.local"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@smallstep.com"},
},
want: false,
wantErr: true,
},
// COMBINED FAILURE TESTS
{
name: "fail/combined-simple-all-badhost.local",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedDNSDomains("*.local"),
WithPermittedCIDRs("127.0.0.1/24"),
WithPermittedEmailAddresses("@example.local"),
WithPermittedURIDomains("*.example.local"),
WithExcludedDNSDomains("badhost.local"),
WithExcludedCIDRs("127.0.0.128/25"),
WithExcludedEmailAddresses("badmail@example.local"),
WithExcludedURIDomains("badwww.example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "badhost.local",
},
DNSNames: []string{"example.local"},
IPAddresses: []net.IP{net.ParseIP("127.0.0.40")},
EmailAddresses: []string{"mail@example.local"},
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.local",
},
},
},
want: false,
wantErr: true,
},
// NO CONSTRAINT SUCCESS TESTS
{
name: "ok/dns-no-constraints",
options: []NamePolicyOption{},
cert: &x509.Certificate{
DNSNames: []string{"www.example.com"},
},
want: true,
wantErr: false,
},
{
name: "ok/ipv4-no-constraints",
options: []NamePolicyOption{},
cert: &x509.Certificate{
IPAddresses: []net.IP{
net.ParseIP("127.0.0.1"),
},
},
want: true,
wantErr: false,
},
{
name: "ok/ipv6-no-constraints",
options: []NamePolicyOption{},
cert: &x509.Certificate{
IPAddresses: []net.IP{
net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-no-constraints",
options: []NamePolicyOption{},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@smallstep.com"},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-no-constraints",
options: []NamePolicyOption{},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-no-constraints",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "www.example.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-empty-no-constraints",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "",
},
},
want: true,
wantErr: false,
},
// SINGLE SAN TYPE PERMITTED SUCCESS TESTS
{
name: "ok/dns-permitted",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"example.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-permitted-wildcard",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local", "*.x509local"),
WithAllowLiteralWildcardNames(),
},
cert: &x509.Certificate{
DNSNames: []string{
"host.local",
"test.x509local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-permitted-wildcard-literal",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local", "*.x509local"),
WithAllowLiteralWildcardNames(),
},
cert: &x509.Certificate{
DNSNames: []string{
"*.local",
"*.x509local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-permitted-combined",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local", "*.x509local", "host.example.com"),
},
cert: &x509.Certificate{
DNSNames: []string{
"example.local",
"example.x509local",
"host.example.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.例.jp"),
},
cert: &x509.Certificate{
DNSNames: []string{
"JP納豆.例.jp", // Example value from https://www.w3.org/International/articles/idn-and-iri/
},
},
want: true,
wantErr: false,
},
{
name: "ok/ipv4-permitted",
options: []NamePolicyOption{
WithPermittedCIDRs("127.0.0.1/24"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("127.0.0.20")},
},
want: true,
wantErr: false,
},
{
name: "ok/ipv6-permitted",
options: []NamePolicyOption{
WithPermittedCIDRs("2001:0db8:85a3:0000:0000:8a2e:0370:7334/120"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7339")},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-permitted-wildcard",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"test@example.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-permitted-plain-domain",
options: []NamePolicyOption{
WithPermittedEmailAddresses("example.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"test@example.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-permitted-specific-mailbox",
options: []NamePolicyOption{
WithPermittedEmailAddresses("test@local.com"),
},
cert: &x509.Certificate{
EmailAddresses: []string{
"test@local.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@例.jp"),
},
cert: &x509.Certificate{
EmailAddresses: []string{},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-permitted-domain-wildcard",
options: []NamePolicyOption{
WithPermittedURIDomains("*.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "example.local",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-permitted-specific-uri",
options: []NamePolicyOption{
WithPermittedURIDomains("test.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "test.local",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-permitted-with-port",
options: []NamePolicyOption{
WithPermittedURIDomains("*.example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com:8080",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedURIDomains("*.bücher.example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "abc.xn--bcher-kva.example.com",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-permitted-idna-internationalized-domain",
options: []NamePolicyOption{
WithPermittedURIDomains("bücher.example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "xn--bcher-kva.example.com",
},
},
},
want: true,
wantErr: false,
},
// SINGLE SAN TYPE EXCLUDED SUCCESS TESTS
{
name: "ok/dns-excluded",
options: []NamePolicyOption{
WithExcludedDNSDomains("*.notlocal"),
},
cert: &x509.Certificate{
DNSNames: []string{"example.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/ipv4-excluded",
options: []NamePolicyOption{
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("10.10.10.10")},
},
want: true,
wantErr: false,
},
{
name: "ok/ipv6-excluded",
options: []NamePolicyOption{
WithExcludedCIDRs("2001:0db8:85a3:0000:0000:8a2e:0370:7334/120"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("2003:0db8:85a3:0000:0000:8a2e:0370:7334")},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-excluded",
options: []NamePolicyOption{
WithExcludedEmailAddresses("@notlocal"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@local"},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-excluded-with-subdomain",
options: []NamePolicyOption{
WithExcludedEmailAddresses("@local"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@example.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-excluded",
options: []NamePolicyOption{
WithExcludedURIDomains("*.google.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: true,
wantErr: false,
},
// SUBJECT SUCCESS TESTS
{
name: "ok/subject-empty",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "",
},
DNSNames: []string{"example.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-dns-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedDNSDomains("*.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "example.local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-dns-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedDNSDomains("*.notlocal"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "example.local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-ipv4-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("127.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "127.0.0.20",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-ipv4-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("128.0.0.1"),
Mask: net.IPv4Mask(255, 255, 255, 0),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "127.0.0.1",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-ipv6-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedIPRanges(
&net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "2001:0db8:85a3:0000:0000:8a2e:0370:7339",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-ipv6-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedIPRanges(
&net.IPNet{
IP: net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"),
Mask: net.CIDRMask(120, 128),
},
),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "2009:0db8:85a3:0000:0000:8a2e:0370:7339",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-email-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedEmailAddresses("@example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "mail@example.local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-email-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedEmailAddresses("@example.notlocal"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "mail@example.local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-uri-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedURIDomains("*.example.com"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "https://www.example.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/subject-uri-excluded",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedURIDomains("*.smallstep.com"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "https://www.example.com",
},
},
want: true,
wantErr: false,
},
// DIFFERENT SAN TYPE EXCLUDED SUCCESS TESTS
{
name: "ok/dns-excluded-with-ip-name", // when only DNS is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedDNSDomains("*.local"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-excluded-with-mail", // when only DNS is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedDNSDomains("*.local"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@example.com"},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-excluded-with-mail", // when only DNS is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedDNSDomains("*.local"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/ip-excluded-with-dns", // when only IP is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedCIDRs("127.0.0.1/24"),
},
cert: &x509.Certificate{
DNSNames: []string{"test.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/ip-excluded-with-mail", // when only IP is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedCIDRs("127.0.0.1/24"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@example.com"},
},
want: true,
wantErr: false,
},
{
name: "ok/ip-excluded-with-mail", // when only IP is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedCIDRs("127.0.0.1/24"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-excluded-with-dns", // when only mail is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
DNSNames: []string{"test.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-excluded-with-ip", // when only mail is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
},
want: true,
wantErr: false,
},
{
name: "ok/mail-excluded-with-uri", // when only mail is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedEmailAddresses("@example.com"),
},
cert: &x509.Certificate{
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.com",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-excluded-with-dns", // when only URI is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedURIDomains("*.example.local"),
},
cert: &x509.Certificate{
DNSNames: []string{"test.example.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-excluded-with-dns", // when only URI is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedURIDomains("*.example.local"),
},
cert: &x509.Certificate{
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
},
want: true,
wantErr: false,
},
{
name: "ok/uri-excluded-with-mail", // when only URI is exluded, we allow anything else
options: []NamePolicyOption{
WithExcludedURIDomains("*.example.local"),
},
cert: &x509.Certificate{
EmailAddresses: []string{"mail@example.local"},
},
want: true,
wantErr: false,
},
{
name: "ok/dns-excluded-with-subject-ip-name", // when only DNS is exluded, we allow anything else
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithExcludedDNSDomains("*.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "127.0.0.1",
},
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
},
want: true,
wantErr: false,
},
// COMBINED SUCCESS TESTS
{
name: "ok/combined-simple-permitted",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedDNSDomains("*.local"),
WithPermittedCIDRs("127.0.0.1/24"),
WithPermittedEmailAddresses("@example.local"),
WithPermittedURIDomains("*.example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "somehost.local",
},
DNSNames: []string{"example.local"},
IPAddresses: []net.IP{net.ParseIP("127.0.0.15")},
EmailAddresses: []string{"mail@example.local"},
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.local",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/combined-simple-permitted-without-subject-verification",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
WithPermittedCIDRs("127.0.0.1/24"),
WithPermittedEmailAddresses("@example.local"),
WithPermittedURIDomains("*.example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "forbidden-but-non-verified-domain.example.com",
},
DNSNames: []string{"example.local"},
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
EmailAddresses: []string{"mail@example.local"},
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.local",
},
},
},
want: true,
wantErr: false,
},
{
name: "ok/combined-simple-all",
options: []NamePolicyOption{
WithSubjectCommonNameVerification(),
WithPermittedDNSDomains("*.local"),
WithPermittedCIDRs("127.0.0.1/24"),
WithPermittedEmailAddresses("@example.local"),
WithPermittedURIDomains("*.example.local"),
WithExcludedDNSDomains("badhost.local"),
WithExcludedCIDRs("127.0.0.128/25"),
WithExcludedEmailAddresses("badmail@example.local"),
WithExcludedURIDomains("badwww.example.local"),
},
cert: &x509.Certificate{
Subject: pkix.Name{
CommonName: "somehost.local",
},
DNSNames: []string{"example.local"},
IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
EmailAddresses: []string{"mail@example.local"},
URIs: []*url.URL{
{
Scheme: "https",
Host: "www.example.local",
},
},
},
want: true,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
engine, err := New(tt.options...)
assert.FatalError(t, err)
got, err := engine.IsX509CertificateAllowed(tt.cert)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.IsX509CertificateAllowed() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
assert.NotEquals(t, "", err.Error()) // TODO(hs): implement a more specific error comparison?
}
if got != tt.want {
t.Errorf("NamePolicyEngine.IsX509CertificateAllowed() = %v, want %v", got, tt.want)
}
// Perform the same tests for a CSR, which are similar to Certificates
csr := &x509.CertificateRequest{
Subject: tt.cert.Subject,
DNSNames: tt.cert.DNSNames,
EmailAddresses: tt.cert.EmailAddresses,
IPAddresses: tt.cert.IPAddresses,
URIs: tt.cert.URIs,
}
got, err = engine.IsX509CertificateRequestAllowed(csr)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.AreCSRNamesAllowed() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
assert.NotEquals(t, "", err.Error())
}
if got != tt.want {
t.Errorf("NamePolicyEngine.AreCSRNamesAllowed() = %v, want %v", got, tt.want)
}
// Perform the same tests for a slice of SANs
includeSubject := engine.verifySubjectCommonName // copy behavior of the engine when Subject has to be included as a SAN
sans := extractSANs(tt.cert, includeSubject)
got, err = engine.AreSANsAllowed(sans)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.AreSANsAllowed() error = %v, wantErr %v", err, tt.wantErr)
return
}
if err != nil {
assert.NotEquals(t, "", err.Error())
}
if got != tt.want {
t.Errorf("NamePolicyEngine.AreSANsAllowed() = %v, want %v", got, tt.want)
}
})
}
}
func TestNamePolicyEngine_SSH_ArePrincipalsAllowed(t *testing.T) {
tests := []struct {
name string
options []NamePolicyOption
cert *ssh.Certificate
want bool
wantErr bool
}{
{
name: "fail/host-with-permitted-dns-domain",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"host.example.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-with-excluded-dns-domain",
options: []NamePolicyOption{
WithExcludedDNSDomains("*.local"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"host.local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-with-permitted-cidr",
options: []NamePolicyOption{
WithPermittedCIDRs("127.0.0.1/24"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"192.168.0.22",
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-with-excluded-cidr",
options: []NamePolicyOption{
WithExcludedCIDRs("127.0.0.1/24"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"127.0.0.0",
},
},
want: false,
wantErr: true,
},
{
name: "fail/user-with-permitted-email",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"mail@local",
},
},
want: false,
wantErr: true,
},
{
name: "fail/user-with-excluded-email",
options: []NamePolicyOption{
WithExcludedEmailAddresses("@example.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"mail@example.com",
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-with-permitted-principals",
options: []NamePolicyOption{
WithPermittedPrincipals("localhost"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"host",
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-with-excluded-principals",
options: []NamePolicyOption{
WithExcludedPrincipals("localhost"),
},
cert: &ssh.Certificate{
ValidPrincipals: []string{
"localhost",
},
},
want: false,
wantErr: true,
},
{
name: "fail/user-with-permitted-principals",
options: []NamePolicyOption{
WithPermittedPrincipals("user"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"root",
},
},
want: false,
wantErr: true,
},
{
name: "fail/user-with-excluded-principals",
options: []NamePolicyOption{
WithExcludedPrincipals("user"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"user",
},
},
want: false,
wantErr: true,
},
{
name: "fail/user-with-permitted-principal-as-mail",
options: []NamePolicyOption{
WithPermittedPrincipals("ops"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"ops@work", // this is (currently) parsed as an email-like principal; not allowed with just "ops" as the permitted principal
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-principal-with-permitted-dns-domain", // when only DNS is permitted, username principals are not allowed.
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"user",
},
},
want: false,
wantErr: true,
},
{
name: "fail/host-principal-with-permitted-ip-range", // when only IPs are permitted, username principals are not allowed.
options: []NamePolicyOption{
WithPermittedCIDRs("127.0.0.1/24"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"user",
},
},
want: false,
wantErr: true,
},
{
name: "fail/user-principal-with-permitted-email", // when only emails are permitted, username principals are not allowed.
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"user",
},
},
want: false,
wantErr: true,
},
{
name: "fail/combined-user",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@smallstep.com"),
WithExcludedEmailAddresses("root@smallstep.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"someone@smallstep.com",
"someone",
},
},
want: false,
wantErr: true,
},
{
name: "fail/combined-user-with-excluded-user-principal",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@smallstep.com"),
WithExcludedPrincipals("root"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"someone@smallstep.com",
"root",
},
},
want: false,
wantErr: true,
},
{
name: "ok/host-with-permitted-user-principals",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@work"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"example.work",
},
},
want: false,
wantErr: true,
},
{
name: "ok/user-with-permitted-user-principals",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"herman@work",
},
},
want: false,
wantErr: true,
},
{
name: "ok/host-with-permitted-dns-domain",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"host.local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/host-with-excluded-dns-domain",
options: []NamePolicyOption{
WithExcludedDNSDomains("*.example.com"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"host.local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/host-with-permitted-ip",
options: []NamePolicyOption{
WithPermittedCIDRs("127.0.0.1/24"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"127.0.0.33",
},
},
want: true,
wantErr: false,
},
{
name: "ok/host-with-excluded-ip",
options: []NamePolicyOption{
WithExcludedCIDRs("127.0.0.1/24"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"192.168.0.35",
},
},
want: true,
wantErr: false,
},
{
name: "ok/user-with-permitted-email",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@example.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"mail@example.com",
},
},
want: true,
wantErr: false,
},
{
name: "ok/user-with-excluded-email",
options: []NamePolicyOption{
WithExcludedEmailAddresses("@example.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"mail@local",
},
},
want: true,
wantErr: false,
},
{
name: "ok/user-with-permitted-principals",
options: []NamePolicyOption{
WithPermittedPrincipals("*"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"user",
},
},
want: true,
wantErr: false,
},
{
name: "ok/user-with-excluded-principals",
options: []NamePolicyOption{
WithExcludedPrincipals("user"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"root",
},
},
want: true,
wantErr: false,
},
{
name: "ok/combined-user",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@smallstep.com"),
WithPermittedPrincipals("*"), // without specifying the wildcard, "someone" would not be allowed.
WithExcludedEmailAddresses("root@smallstep.com"),
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"someone@smallstep.com",
"someone",
},
},
want: true,
wantErr: false,
},
{
name: "ok/combined-user-with-excluded-user-principal",
options: []NamePolicyOption{
WithPermittedEmailAddresses("@smallstep.com"),
WithExcludedEmailAddresses("root@smallstep.com"),
WithExcludedPrincipals("root"), // unlike the previous test, this implicitly allows any other username principal
},
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{
"someone@smallstep.com",
"someone",
},
},
want: true,
wantErr: false,
},
{
name: "ok/combined-host",
options: []NamePolicyOption{
WithPermittedDNSDomains("*.local"),
WithPermittedCIDRs("127.0.0.1/24"),
WithExcludedDNSDomains("badhost.local"),
WithExcludedCIDRs("127.0.0.128/25"),
},
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{
"example.local",
"127.0.0.31",
},
},
want: true,
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
engine, err := New(tt.options...)
assert.FatalError(t, err)
got, err := engine.IsSSHCertificateAllowed(tt.cert)
if (err != nil) != tt.wantErr {
t.Errorf("NamePolicyEngine.IsSSHCertificateAllowed() error = %v, wantErr %v", err, tt.wantErr)
return
}
if got != tt.want {
t.Errorf("NamePolicyEngine.IsSSHCertificateAllowed() = %v, want %v", got, tt.want)
}
})
}
}
type result struct {
wantDNSNames []string
wantIps []net.IP
wantEmails []string
wantUsernames []string
}
func emptyResult() result {
return result{
wantDNSNames: []string{},
wantIps: []net.IP{},
wantEmails: []string{},
wantUsernames: []string{},
}
}
func Test_splitSSHPrincipals(t *testing.T) {
type test struct {
cert *ssh.Certificate
r result
wantErr bool
}
var tests = map[string]func(t *testing.T) test{
"fail/unexpected-cert-type": func(t *testing.T) test {
r := emptyResult()
return test{
cert: &ssh.Certificate{
CertType: uint32(0),
},
r: r,
wantErr: true,
}
},
"fail/user-ip": func(t *testing.T) test {
r := emptyResult()
r.wantIps = []net.IP{net.ParseIP("127.0.0.1")}
return test{
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{"127.0.0.1"},
},
r: r,
wantErr: true,
}
},
"fail/user-uri": func(t *testing.T) test {
r := emptyResult()
return test{
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{"https://host.local/"},
},
r: r,
wantErr: true,
}
},
"fail/host-uri": func(t *testing.T) test {
r := emptyResult()
return test{
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{"https://host.local/"},
},
r: r,
wantErr: true,
}
},
"ok/host-dns": func(t *testing.T) test {
r := emptyResult()
r.wantDNSNames = []string{"host.example.com"}
return test{
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{"host.example.com"},
},
r: r,
wantErr: false,
}
},
"ok/host-ip": func(t *testing.T) test {
r := emptyResult()
r.wantIps = []net.IP{net.ParseIP("127.0.0.1")}
return test{
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{"127.0.0.1"},
},
r: r,
wantErr: false,
}
},
"ok/host-email": func(t *testing.T) test {
r := emptyResult()
r.wantEmails = []string{"ops@work"}
return test{
cert: &ssh.Certificate{
CertType: ssh.HostCert,
ValidPrincipals: []string{"ops@work"},
},
r: r,
wantErr: false,
}
},
"ok/user-localhost": func(t *testing.T) test {
r := emptyResult()
r.wantUsernames = []string{"localhost"} // when type is User cert, this is considered a username; not a DNS
return test{
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{"localhost"},
},
r: r,
wantErr: false,
}
},
"ok/user-username-with-period": func(t *testing.T) test {
r := emptyResult()
r.wantUsernames = []string{"x.joe"}
return test{
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{"x.joe"},
},
r: r,
wantErr: false,
}
},
"ok/user-maillike": func(t *testing.T) test {
r := emptyResult()
r.wantEmails = []string{"ops@work"}
return test{
cert: &ssh.Certificate{
CertType: ssh.UserCert,
ValidPrincipals: []string{"ops@work"},
},
r: r,
wantErr: false,
}
},
}
for name, prep := range tests {
tt := prep(t)
t.Run(name, func(t *testing.T) {
gotDNSNames, gotIps, gotEmails, gotUsernames, err := splitSSHPrincipals(tt.cert)
if (err != nil) != tt.wantErr {
t.Errorf("splitSSHPrincipals() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !cmp.Equal(tt.r.wantDNSNames, gotDNSNames) {
t.Errorf("splitSSHPrincipals() DNS names diff =\n%s", cmp.Diff(tt.r.wantDNSNames, gotDNSNames))
}
if !cmp.Equal(tt.r.wantIps, gotIps) {
t.Errorf("splitSSHPrincipals() IPs diff =\n%s", cmp.Diff(tt.r.wantIps, gotIps))
}
if !cmp.Equal(tt.r.wantEmails, gotEmails) {
t.Errorf("splitSSHPrincipals() Emails diff =\n%s", cmp.Diff(tt.r.wantEmails, gotEmails))
}
if !cmp.Equal(tt.r.wantUsernames, gotUsernames) {
t.Errorf("splitSSHPrincipals() Usernames diff =\n%s", cmp.Diff(tt.r.wantUsernames, gotUsernames))
}
})
}
}
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