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package trust
import (
"encoding/json"
"os"
"path/filepath"
"testing"
"github.com/containers/image/v5/signature"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestAddPolicyEntries(t *testing.T) {
tempDir := t.TempDir()
policyPath := filepath.Join(tempDir, "policy.json")
minimalPolicy := &signature.Policy{
Default: []signature.PolicyRequirement{
signature.NewPRInsecureAcceptAnything(),
},
}
minimalPolicyJSON, err := json.Marshal(minimalPolicy)
require.NoError(t, err)
err = os.WriteFile(policyPath, minimalPolicyJSON, 0600)
require.NoError(t, err)
// Invalid input:
for _, invalid := range []AddPolicyEntriesInput{
{
Scope: "default",
Type: "accept",
PubKeyFiles: []string{"/does-not-make-sense"},
},
{
Scope: "default",
Type: "insecureAcceptAnything",
PubKeyFiles: []string{"/does-not-make-sense"},
},
{
Scope: "default",
Type: "reject",
PubKeyFiles: []string{"/does-not-make-sense"},
},
{
Scope: "default",
Type: "signedBy",
PubKeyFiles: []string{}, // A key is missing
},
{
Scope: "default",
Type: "sigstoreSigned",
PubKeyFiles: []string{}, // A key is missing
},
{
Scope: "default",
Type: "this-is-unknown",
PubKeyFiles: []string{},
},
} {
err := AddPolicyEntries(policyPath, invalid)
assert.Error(t, err, "%#v", invalid)
}
err = AddPolicyEntries(policyPath, AddPolicyEntriesInput{
Scope: "default",
Type: "reject",
})
assert.NoError(t, err)
err = AddPolicyEntries(policyPath, AddPolicyEntriesInput{
Scope: "quay.io/accepted",
Type: "accept",
})
assert.NoError(t, err)
err = AddPolicyEntries(policyPath, AddPolicyEntriesInput{
Scope: "quay.io/multi-signed",
Type: "signedBy",
PubKeyFiles: []string{"/1.pub", "/2.pub"},
})
assert.NoError(t, err)
err = AddPolicyEntries(policyPath, AddPolicyEntriesInput{
Scope: "quay.io/sigstore-signed",
Type: "sigstoreSigned",
PubKeyFiles: []string{"/1.pub", "/2.pub"},
})
assert.NoError(t, err)
// Test that the outcome is consumable, and compare it with the expected values.
parsedPolicy, err := signature.NewPolicyFromFile(policyPath)
require.NoError(t, err)
assert.Equal(t, &signature.Policy{
Default: signature.PolicyRequirements{
signature.NewPRReject(),
},
Transports: map[string]signature.PolicyTransportScopes{
"docker": {
"quay.io/accepted": {
signature.NewPRInsecureAcceptAnything(),
},
"quay.io/multi-signed": {
xNewPRSignedByKeyPath(t, "/1.pub", signature.NewPRMMatchRepoDigestOrExact()),
xNewPRSignedByKeyPath(t, "/2.pub", signature.NewPRMMatchRepoDigestOrExact()),
},
"quay.io/sigstore-signed": {
xNewPRSigstoreSignedKeyPath(t, "/1.pub", signature.NewPRMMatchRepoDigestOrExact()),
xNewPRSigstoreSignedKeyPath(t, "/2.pub", signature.NewPRMMatchRepoDigestOrExact()),
},
},
},
}, parsedPolicy)
// Test that completely unknown JSON is preserved
jsonWithUnknownData := `{
"default": [
{
"type": "this is unknown",
"unknown field": "should be preserved"
}
],
"transports":
{
"docker-daemon":
{
"": [{
"type":"this is unknown 2",
"unknown field 2": "should be preserved 2"
}]
}
}
}`
err = os.WriteFile(policyPath, []byte(jsonWithUnknownData), 0600)
require.NoError(t, err)
err = AddPolicyEntries(policyPath, AddPolicyEntriesInput{
Scope: "quay.io/innocuous",
Type: "signedBy",
PubKeyFiles: []string{"/1.pub"},
})
require.NoError(t, err)
updatedJSONWithUnknownData, err := os.ReadFile(policyPath)
require.NoError(t, err)
// Decode updatedJSONWithUnknownData so that this test does not depend on details of the encoding.
// To reduce noise in the constants below:
type a = []interface{}
type m = map[string]interface{}
var parsedUpdatedJSON m
err = json.Unmarshal(updatedJSONWithUnknownData, &parsedUpdatedJSON)
require.NoError(t, err)
assert.Equal(t, m{
"default": a{
m{
"type": "this is unknown",
"unknown field": "should be preserved",
},
},
"transports": m{
"docker-daemon": m{
"": a{
m{
"type": "this is unknown 2",
"unknown field 2": "should be preserved 2",
},
},
},
"docker": m{
"quay.io/innocuous": a{
m{
"type": "signedBy",
"keyType": "GPGKeys",
"keyPath": "/1.pub",
},
},
},
},
}, parsedUpdatedJSON)
}
// xNewPRSignedByKeyPath is a wrapper for NewPRSignedByKeyPath which must not fail.
func xNewPRSignedByKeyPath(t *testing.T, keyPath string, signedIdentity signature.PolicyReferenceMatch) signature.PolicyRequirement {
pr, err := signature.NewPRSignedByKeyPath(signature.SBKeyTypeGPGKeys, keyPath, signedIdentity)
require.NoError(t, err)
return pr
}
// xNewPRSignedByKeyPaths is a wrapper for NewPRSignedByKeyPaths which must not fail.
func xNewPRSignedByKeyPaths(t *testing.T, keyPaths []string, signedIdentity signature.PolicyReferenceMatch) signature.PolicyRequirement {
pr, err := signature.NewPRSignedByKeyPaths(signature.SBKeyTypeGPGKeys, keyPaths, signedIdentity)
require.NoError(t, err)
return pr
}
// xNewPRSigstoreSignedKeyPath is a wrapper for NewPRSigstoreSignedKeyPath which must not fail.
func xNewPRSigstoreSignedKeyPath(t *testing.T, keyPath string, signedIdentity signature.PolicyReferenceMatch) signature.PolicyRequirement {
pr, err := signature.NewPRSigstoreSignedKeyPath(keyPath, signedIdentity)
require.NoError(t, err)
return pr
}
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