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Add StatusCoder to ConstraintError

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This commit is contained in:
Mariano Cano 2022-09-20 14:45:47 -07:00
parent 2959aa676d
commit 75bff055fc
2 changed files with 32 additions and 26 deletions
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46
authority/internal/constraints/constraints.go
View file

@ -4,6 +4,7 @@ import (
"crypto/x509"
"fmt"
"net"
"net/http"
"net/url"
)
@ -22,6 +23,11 @@ func (e ConstraintError) Error() string {
return e.Detail
}
// StatusCode implements an status coder interface.
func (e ConstraintError) StatusCode() int {
return http.StatusForbidden
}
// Engine implements a constraint validator for DNS names, IP addresses, Email
// addresses and URIs.
type Engine struct {
@ -39,38 +45,38 @@ type Engine struct {
// New creates a constraint validation engine that contains the given chain of
// certificates.
func New(chain ...*x509.Certificate) *Engine {
s := new(Engine)
e := new(Engine)
for _, crt := range chain {
s.permittedDNSDomains = append(s.permittedDNSDomains, crt.PermittedDNSDomains...)
s.excludedDNSDomains = append(s.excludedDNSDomains, crt.ExcludedDNSDomains...)
s.permittedIPRanges = append(s.permittedIPRanges, crt.PermittedIPRanges...)
s.excludedIPRanges = append(s.excludedIPRanges, crt.ExcludedIPRanges...)
s.permittedEmailAddresses = append(s.permittedEmailAddresses, crt.PermittedEmailAddresses...)
s.excludedEmailAddresses = append(s.excludedEmailAddresses, crt.ExcludedEmailAddresses...)
s.permittedURIDomains = append(s.permittedURIDomains, crt.PermittedURIDomains...)
s.excludedURIDomains = append(s.excludedURIDomains, crt.ExcludedURIDomains...)
e.permittedDNSDomains = append(e.permittedDNSDomains, crt.PermittedDNSDomains...)
e.excludedDNSDomains = append(e.excludedDNSDomains, crt.ExcludedDNSDomains...)
e.permittedIPRanges = append(e.permittedIPRanges, crt.PermittedIPRanges...)
e.excludedIPRanges = append(e.excludedIPRanges, crt.ExcludedIPRanges...)
e.permittedEmailAddresses = append(e.permittedEmailAddresses, crt.PermittedEmailAddresses...)
e.excludedEmailAddresses = append(e.excludedEmailAddresses, crt.ExcludedEmailAddresses...)
e.permittedURIDomains = append(e.permittedURIDomains, crt.PermittedURIDomains...)
e.excludedURIDomains = append(e.excludedURIDomains, crt.ExcludedURIDomains...)
if !s.hasNameConstraints {
if !e.hasNameConstraints {
for _, ext := range crt.Extensions {
if ext.Id.Equal(oidExtensionNameConstraints) {
s.hasNameConstraints = true
e.hasNameConstraints = true
break
}
}
}
}
return s
return e
}
// Validate checks the given names with the name constraints defined in the
// service.
func (s *Engine) Validate(dnsNames []string, ipAddresses []net.IP, emailAddresses []string, uris []*url.URL) error {
if s == nil || !s.hasNameConstraints {
func (e *Engine) Validate(dnsNames []string, ipAddresses []net.IP, emailAddresses []string, uris []*url.URL) error {
if e == nil || !e.hasNameConstraints {
return nil
}
for _, name := range dnsNames {
if err := checkNameConstraints("DNS name", name, name, s.permittedDNSDomains, s.excludedDNSDomains,
if err := checkNameConstraints("DNS name", name, name, e.permittedDNSDomains, e.excludedDNSDomains,
func(parsedName, constraint any) (bool, error) {
return matchDomainConstraint(parsedName.(string), constraint.(string))
},
@ -80,7 +86,7 @@ func (s *Engine) Validate(dnsNames []string, ipAddresses []net.IP, emailAddresse
}
for _, ip := range ipAddresses {
if err := checkNameConstraints("IP address", ip.String(), ip, s.permittedIPRanges, s.excludedIPRanges,
if err := checkNameConstraints("IP address", ip.String(), ip, e.permittedIPRanges, e.excludedIPRanges,
func(parsedName, constraint any) (bool, error) {
return matchIPConstraint(parsedName.(net.IP), constraint.(*net.IPNet))
},
@ -94,7 +100,7 @@ func (s *Engine) Validate(dnsNames []string, ipAddresses []net.IP, emailAddresse
if !ok {
return fmt.Errorf("cannot parse rfc822Name %q", email)
}
if err := checkNameConstraints("Email address", email, mailbox, s.permittedEmailAddresses, s.excludedEmailAddresses,
if err := checkNameConstraints("Email address", email, mailbox, e.permittedEmailAddresses, e.excludedEmailAddresses,
func(parsedName, constraint any) (bool, error) {
return matchEmailConstraint(parsedName.(rfc2821Mailbox), constraint.(string))
},
@ -104,7 +110,7 @@ func (s *Engine) Validate(dnsNames []string, ipAddresses []net.IP, emailAddresse
}
for _, uri := range uris {
if err := checkNameConstraints("URI", uri.String(), uri, s.permittedURIDomains, s.excludedURIDomains,
if err := checkNameConstraints("URI", uri.String(), uri, e.permittedURIDomains, e.excludedURIDomains,
func(parsedName, constraint any) (bool, error) {
return matchURIConstraint(parsedName.(*url.URL), constraint.(string))
},
@ -118,6 +124,6 @@ func (s *Engine) Validate(dnsNames []string, ipAddresses []net.IP, emailAddresse
// ValidateCertificate validates the DNS names, IP addresses, Email address and
// URIs present in the given certificate.
func (s *Engine) ValidateCertificate(cert *x509.Certificate) error {
return s.Validate(cert.DNSNames, cert.IPAddresses, cert.EmailAddresses, cert.URIs)
func (e *Engine) ValidateCertificate(cert *x509.Certificate) error {
return e.Validate(cert.DNSNames, cert.IPAddresses, cert.EmailAddresses, cert.URIs)
}

12
authority/internal/constraints/constraints_test.go
View file

@ -205,7 +205,7 @@ func Test_service_Validate(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
s := &Engine{
e := &Engine{
hasNameConstraints: tt.fields.hasNameConstraints,
permittedDNSDomains: tt.fields.permittedDNSDomains,
excludedDNSDomains: tt.fields.excludedDNSDomains,
@ -216,7 +216,7 @@ func Test_service_Validate(t *testing.T) {
permittedURIDomains: tt.fields.permittedURIDomains,
excludedURIDomains: tt.fields.excludedURIDomains,
}
if err := s.Validate(tt.args.dnsNames, tt.args.ipAddresses, tt.args.emailAddresses, tt.args.uris); (err != nil) != tt.wantErr {
if err := e.Validate(tt.args.dnsNames, tt.args.ipAddresses, tt.args.emailAddresses, tt.args.uris); (err != nil) != tt.wantErr {
t.Errorf("service.Validate() error = %v, wantErr %v", err, tt.wantErr)
}
})
@ -224,8 +224,8 @@ func Test_service_Validate(t *testing.T) {
}
func Test_service_Validate_nil(t *testing.T) {
var s *Engine
if err := s.Validate([]string{"www.example.com"}, nil, nil, nil); err != nil {
var e *Engine
if err := e.Validate([]string{"www.example.com"}, nil, nil, nil); err != nil {
t.Errorf("service.Validate() error = %v, wantErr false", err)
}
}
@ -284,7 +284,7 @@ func TestEngine_ValidateCertificate(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
s := &Engine{
e := &Engine{
hasNameConstraints: tt.fields.hasNameConstraints,
permittedDNSDomains: tt.fields.permittedDNSDomains,
excludedDNSDomains: tt.fields.excludedDNSDomains,
@ -295,7 +295,7 @@ func TestEngine_ValidateCertificate(t *testing.T) {
permittedURIDomains: tt.fields.permittedURIDomains,
excludedURIDomains: tt.fields.excludedURIDomains,
}
if err := s.ValidateCertificate(tt.args.cert); (err != nil) != tt.wantErr {
if err := e.ValidateCertificate(tt.args.cert); (err != nil) != tt.wantErr {
t.Errorf("Engine.ValidateCertificate() error = %v, wantErr %v", err, tt.wantErr)
}
})