417 lines
12 KiB
Go
417 lines
12 KiB
Go
package trustgraph
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import (
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"bytes"
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"crypto/x509"
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"encoding/json"
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"testing"
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"time"
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"github.com/docker/libtrust"
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"github.com/docker/libtrust/testutil"
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)
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const testStatementExpiration = time.Hour * 5
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func generateStatement(grants []*Grant, key libtrust.PrivateKey, chain []*x509.Certificate) (*Statement, error) {
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var statement Statement
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statement.Grants = make([]*jsonGrant, len(grants))
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for i, grant := range grants {
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statement.Grants[i] = &jsonGrant{
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Subject: grant.Subject,
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Permission: grant.Permission,
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Grantee: grant.Grantee,
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}
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}
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statement.IssuedAt = time.Now()
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statement.Expiration = time.Now().Add(testStatementExpiration)
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statement.Revocations = make([]*jsonRevocation, 0)
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marshalled, err := json.MarshalIndent(statement.jsonStatement, "", " ")
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if err != nil {
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return nil, err
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}
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sig, err := libtrust.NewJSONSignature(marshalled)
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if err != nil {
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return nil, err
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}
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err = sig.SignWithChain(key, chain)
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if err != nil {
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return nil, err
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}
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statement.signature = sig
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return &statement, nil
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}
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func generateTrustChain(t *testing.T, chainLen int) (libtrust.PrivateKey, *x509.CertPool, []*x509.Certificate) {
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caKey, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatalf("Error generating key: %s", err)
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}
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ca, err := testutil.GenerateTrustCA(caKey.CryptoPublicKey(), caKey.CryptoPrivateKey())
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if err != nil {
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t.Fatalf("Error generating ca: %s", err)
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}
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parent := ca
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parentKey := caKey
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chain := make([]*x509.Certificate, chainLen)
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for i := chainLen - 1; i > 0; i-- {
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intermediatekey, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatalf("Error generate key: %s", err)
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}
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chain[i], err = testutil.GenerateIntermediate(intermediatekey.CryptoPublicKey(), parentKey.CryptoPrivateKey(), parent)
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if err != nil {
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t.Fatalf("Error generating intermdiate certificate: %s", err)
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}
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parent = chain[i]
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parentKey = intermediatekey
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}
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trustKey, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatalf("Error generate key: %s", err)
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}
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chain[0], err = testutil.GenerateTrustCert(trustKey.CryptoPublicKey(), parentKey.CryptoPrivateKey(), parent)
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if err != nil {
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t.Fatalf("Error generate trust cert: %s", err)
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}
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caPool := x509.NewCertPool()
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caPool.AddCert(ca)
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return trustKey, caPool, chain
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}
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func TestLoadStatement(t *testing.T) {
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grantCount := 4
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grants, _ := createTestKeysAndGrants(grantCount)
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trustKey, caPool, chain := generateTrustChain(t, 6)
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statement, err := generateStatement(grants, trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statementBytes, err := statement.Bytes()
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if err != nil {
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t.Fatalf("Error getting statement bytes: %s", err)
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}
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s2, err := LoadStatement(bytes.NewReader(statementBytes), caPool)
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if err != nil {
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t.Fatalf("Error loading statement: %s", err)
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}
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if len(s2.Grants) != grantCount {
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t.Fatalf("Unexpected grant length\n\tExpected: %d\n\tActual: %d", grantCount, len(s2.Grants))
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}
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pool := x509.NewCertPool()
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_, err = LoadStatement(bytes.NewReader(statementBytes), pool)
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if err == nil {
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t.Fatalf("No error thrown verifying without an authority")
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} else if _, ok := err.(x509.UnknownAuthorityError); !ok {
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t.Fatalf("Unexpected error verifying without authority: %s", err)
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}
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s2, err = LoadStatement(bytes.NewReader(statementBytes), nil)
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if err != nil {
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t.Fatalf("Error loading statement: %s", err)
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}
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if len(s2.Grants) != grantCount {
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t.Fatalf("Unexpected grant length\n\tExpected: %d\n\tActual: %d", grantCount, len(s2.Grants))
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}
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badData := make([]byte, len(statementBytes))
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copy(badData, statementBytes)
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badData[0] = '['
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_, err = LoadStatement(bytes.NewReader(badData), nil)
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if err == nil {
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t.Fatalf("No error thrown parsing bad json")
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}
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alteredData := make([]byte, len(statementBytes))
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copy(alteredData, statementBytes)
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alteredData[30] = '0'
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_, err = LoadStatement(bytes.NewReader(alteredData), nil)
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if err == nil {
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t.Fatalf("No error thrown from bad data")
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}
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}
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func TestCollapseGrants(t *testing.T) {
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grantCount := 8
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grants, keys := createTestKeysAndGrants(grantCount)
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linkGrants := make([]*Grant, 4)
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linkGrants[0] = &Grant{
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Subject: "/user-3",
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Permission: 0x0f,
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Grantee: "/user-2",
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}
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linkGrants[1] = &Grant{
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Subject: "/user-3/sub-project",
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Permission: 0x0f,
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Grantee: "/user-4",
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}
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linkGrants[2] = &Grant{
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Subject: "/user-6",
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Permission: 0x0f,
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Grantee: "/user-7",
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}
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linkGrants[3] = &Grant{
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Subject: "/user-6/sub-project/specific-app",
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Permission: 0x0f,
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Grantee: "/user-5",
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}
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trustKey, pool, chain := generateTrustChain(t, 3)
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statements := make([]*Statement, 3)
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var err error
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statements[0], err = generateStatement(grants[0:4], trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statements[1], err = generateStatement(grants[4:], trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statements[2], err = generateStatement(linkGrants, trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statementsCopy := make([]*Statement, len(statements))
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for i, statement := range statements {
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b, err := statement.Bytes()
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if err != nil {
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t.Fatalf("Error getting statement bytes: %s", err)
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}
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verifiedStatement, err := LoadStatement(bytes.NewReader(b), pool)
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if err != nil {
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t.Fatalf("Error loading statement: %s", err)
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}
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// Force sort by reversing order
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statementsCopy[len(statementsCopy)-i-1] = verifiedStatement
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}
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statements = statementsCopy
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collapsedGrants, expiration, err := CollapseStatements(statements, false)
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if len(collapsedGrants) != 12 {
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t.Fatalf("Unexpected number of grants\n\tExpected: %d\n\tActual: %d", 12, len(collapsedGrants))
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}
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if expiration.After(time.Now().Add(time.Hour*5)) || expiration.Before(time.Now()) {
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t.Fatalf("Unexpected expiration time: %s", expiration.String())
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}
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g := NewMemoryGraph(collapsedGrants)
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testVerified(t, g, keys[0].PublicKey(), "user-key-1", "/user-1", 0x0f)
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testVerified(t, g, keys[1].PublicKey(), "user-key-2", "/user-2", 0x0f)
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testVerified(t, g, keys[2].PublicKey(), "user-key-3", "/user-3", 0x0f)
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testVerified(t, g, keys[3].PublicKey(), "user-key-4", "/user-4", 0x0f)
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testVerified(t, g, keys[4].PublicKey(), "user-key-5", "/user-5", 0x0f)
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testVerified(t, g, keys[5].PublicKey(), "user-key-6", "/user-6", 0x0f)
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testVerified(t, g, keys[6].PublicKey(), "user-key-7", "/user-7", 0x0f)
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testVerified(t, g, keys[7].PublicKey(), "user-key-8", "/user-8", 0x0f)
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testVerified(t, g, keys[1].PublicKey(), "user-key-2", "/user-3", 0x0f)
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testVerified(t, g, keys[1].PublicKey(), "user-key-2", "/user-3/sub-project/specific-app", 0x0f)
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testVerified(t, g, keys[3].PublicKey(), "user-key-4", "/user-3/sub-project", 0x0f)
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testVerified(t, g, keys[6].PublicKey(), "user-key-7", "/user-6", 0x0f)
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testVerified(t, g, keys[6].PublicKey(), "user-key-7", "/user-6/sub-project/specific-app", 0x0f)
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testVerified(t, g, keys[4].PublicKey(), "user-key-5", "/user-6/sub-project/specific-app", 0x0f)
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testNotVerified(t, g, keys[3].PublicKey(), "user-key-4", "/user-3", 0x0f)
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testNotVerified(t, g, keys[3].PublicKey(), "user-key-4", "/user-6/sub-project", 0x0f)
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testNotVerified(t, g, keys[4].PublicKey(), "user-key-5", "/user-6/sub-project", 0x0f)
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// Add revocation grant
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statements = append(statements, &Statement{
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jsonStatement{
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IssuedAt: time.Now(),
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Expiration: time.Now().Add(testStatementExpiration),
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Grants: []*jsonGrant{},
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Revocations: []*jsonRevocation{
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&jsonRevocation{
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Subject: "/user-1",
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Revocation: 0x0f,
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Grantee: keys[0].KeyID(),
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},
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&jsonRevocation{
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Subject: "/user-2",
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Revocation: 0x08,
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Grantee: keys[1].KeyID(),
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},
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&jsonRevocation{
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Subject: "/user-6",
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Revocation: 0x0f,
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Grantee: "/user-7",
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},
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&jsonRevocation{
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Subject: "/user-9",
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Revocation: 0x0f,
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Grantee: "/user-10",
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},
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},
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},
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nil,
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})
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collapsedGrants, expiration, err = CollapseStatements(statements, false)
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if len(collapsedGrants) != 12 {
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t.Fatalf("Unexpected number of grants\n\tExpected: %d\n\tActual: %d", 12, len(collapsedGrants))
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}
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if expiration.After(time.Now().Add(time.Hour*5)) || expiration.Before(time.Now()) {
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t.Fatalf("Unexpected expiration time: %s", expiration.String())
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}
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g = NewMemoryGraph(collapsedGrants)
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testNotVerified(t, g, keys[0].PublicKey(), "user-key-1", "/user-1", 0x0f)
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testNotVerified(t, g, keys[1].PublicKey(), "user-key-2", "/user-2", 0x0f)
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testNotVerified(t, g, keys[6].PublicKey(), "user-key-7", "/user-6/sub-project/specific-app", 0x0f)
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testVerified(t, g, keys[1].PublicKey(), "user-key-2", "/user-2", 0x07)
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}
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func TestFilterStatements(t *testing.T) {
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grantCount := 8
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grants, keys := createTestKeysAndGrants(grantCount)
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linkGrants := make([]*Grant, 3)
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linkGrants[0] = &Grant{
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Subject: "/user-3",
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Permission: 0x0f,
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Grantee: "/user-2",
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}
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linkGrants[1] = &Grant{
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Subject: "/user-5",
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Permission: 0x0f,
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Grantee: "/user-4",
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}
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linkGrants[2] = &Grant{
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Subject: "/user-7",
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Permission: 0x0f,
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Grantee: "/user-6",
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}
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trustKey, _, chain := generateTrustChain(t, 3)
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statements := make([]*Statement, 5)
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var err error
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statements[0], err = generateStatement(grants[0:2], trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statements[1], err = generateStatement(grants[2:4], trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statements[2], err = generateStatement(grants[4:6], trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statements[3], err = generateStatement(grants[6:], trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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statements[4], err = generateStatement(linkGrants, trustKey, chain)
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if err != nil {
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t.Fatalf("Error generating statement: %s", err)
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}
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collapsed, _, err := CollapseStatements(statements, false)
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if err != nil {
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t.Fatalf("Error collapsing grants: %s", err)
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}
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// Filter 1, all 5 statements
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filter1, err := FilterStatements(collapsed)
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if err != nil {
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t.Fatalf("Error filtering statements: %s", err)
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}
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if len(filter1) != 5 {
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t.Fatalf("Wrong number of statements, expected %d, received %d", 5, len(filter1))
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}
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// Filter 2, one statement
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filter2, err := FilterStatements([]*Grant{collapsed[0]})
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if err != nil {
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t.Fatalf("Error filtering statements: %s", err)
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}
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if len(filter2) != 1 {
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t.Fatalf("Wrong number of statements, expected %d, received %d", 1, len(filter2))
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}
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// Filter 3, 2 statements, from graph lookup
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g := NewMemoryGraph(collapsed)
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lookupGrants, err := g.GetGrants(keys[1], "/user-3", 0x0f)
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if err != nil {
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t.Fatalf("Error looking up grants: %s", err)
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}
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if len(lookupGrants) != 1 {
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t.Fatalf("Wrong numberof grant chains returned from lookup, expected %d, received %d", 1, len(lookupGrants))
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}
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if len(lookupGrants[0]) != 2 {
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t.Fatalf("Wrong number of grants looked up, expected %d, received %d", 2, len(lookupGrants))
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}
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filter3, err := FilterStatements(lookupGrants[0])
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if err != nil {
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t.Fatalf("Error filtering statements: %s", err)
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}
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if len(filter3) != 2 {
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t.Fatalf("Wrong number of statements, expected %d, received %d", 2, len(filter3))
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}
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}
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func TestCreateStatement(t *testing.T) {
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grantJSON := bytes.NewReader([]byte(`[
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{
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"subject": "/user-2",
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"permission": 15,
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"grantee": "/user-1"
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},
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{
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"subject": "/user-7",
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"permission": 1,
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"grantee": "/user-9"
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},
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{
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"subject": "/user-3",
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"permission": 15,
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"grantee": "/user-2"
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}
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]`))
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revocationJSON := bytes.NewReader([]byte(`[
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{
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"subject": "user-8",
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"revocation": 12,
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"grantee": "user-9"
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}
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]`))
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trustKey, pool, chain := generateTrustChain(t, 3)
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statement, err := CreateStatement(grantJSON, revocationJSON, testStatementExpiration, trustKey, chain)
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if err != nil {
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t.Fatalf("Error creating statement: %s", err)
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}
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b, err := statement.Bytes()
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if err != nil {
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t.Fatalf("Error retrieving bytes: %s", err)
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}
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verified, err := LoadStatement(bytes.NewReader(b), pool)
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if err != nil {
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t.Fatalf("Error loading statement: %s", err)
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}
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if len(verified.Grants) != 3 {
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t.Errorf("Unexpected number of grants, expected %d, received %d", 3, len(verified.Grants))
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}
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if len(verified.Revocations) != 1 {
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t.Errorf("Unexpected number of revocations, expected %d, received %d", 1, len(verified.Revocations))
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}
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}
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