func (as *assertsSuite) TestDecoderBrokenBodySeparation(c *C) {
streamData := strings.Replace(exampleBodyAndExtraHeaders, "THE-BODY\n\n", "THE-BODY", 1)
decoder := asserts.NewDecoder(bytes.NewBufferString(streamData))
_, err := decoder.Decode()
c.Assert(err, ErrorMatches, "missing content/signature separator")
streamData = strings.Replace(exampleBodyAndExtraHeaders, "THE-BODY\n\n", "THE-BODY\n", 1)
decoder = asserts.NewDecoder(bytes.NewBufferString(streamData))
_, err = decoder.Decode()
c.Assert(err, ErrorMatches, "missing content/signature separator")
}
func (as *assertsSuite) TestEncoderOK(c *C) {
encoded := []byte("type: test-only\n" +
"authority-id: auth-id2\n" +
"primary-key: xyzyz\n" +
"revision: 5\n" +
"header1: value1\n" +
"header2: value2\n" +
"body-length: 8\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"THE-BODY" +
"\n\n" +
"AXNpZw==")
a0, err := asserts.Decode(encoded)
c.Assert(err, IsNil)
cont0, _ := a0.Signature()
stream := new(bytes.Buffer)
enc := asserts.NewEncoder(stream)
enc.Encode(a0)
c.Check(bytes.HasSuffix(stream.Bytes(), []byte{'\n'}), Equals, true)
dec := asserts.NewDecoder(stream)
a1, err := dec.Decode()
c.Assert(err, IsNil)
cont1, _ := a1.Signature()
c.Check(cont1, DeepEquals, cont0)
}
func (as *assertsSuite) TestEncoderDecoderHappy(c *C) {
stream := new(bytes.Buffer)
enc := asserts.NewEncoder(stream)
asserts.EncoderAppend(enc, []byte(exampleEmptyBody2NlNl))
asserts.EncoderAppend(enc, []byte(exampleBodyAndExtraHeaders))
asserts.EncoderAppend(enc, []byte(exampleEmptyBodyAllDefaults))
decoder := asserts.NewDecoder(stream)
a, err := decoder.Decode()
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
_, ok := a.(*asserts.TestOnly)
c.Check(ok, Equals, true)
checkContent(c, a, exampleEmptyBody2NlNl)
a, err = decoder.Decode()
c.Assert(err, IsNil)
checkContent(c, a, exampleBodyAndExtraHeaders)
a, err = decoder.Decode()
c.Assert(err, IsNil)
checkContent(c, a, exampleEmptyBodyAllDefaults)
a, err = decoder.Decode()
c.Assert(err, Equals, io.EOF)
}
func submitSerialRequest(t *state.Task, serialRequest string, client *http.Client) (*asserts.Serial, error) {
st := t.State()
st.Unlock()
defer st.Lock()
resp, err := client.Post(serialRequestURL, asserts.MediaType, bytes.NewBufferString(serialRequest))
if err != nil {
return nil, retryErr(t, "cannot deliver device serial request: %v", err)
}
defer resp.Body.Close()
switch resp.StatusCode {
case 200, 201:
case 202:
return nil, errPoll
default:
return nil, retryErr(t, "cannot deliver device serial request: unexpected status %d", resp.StatusCode)
}
// decode body with serial assertion
dec := asserts.NewDecoder(resp.Body)
got, err := dec.Decode()
if err != nil { // assume broken i/o
return nil, retryErr(t, "cannot read response to request for a serial: %v", err)
}
serial, ok := got.(*asserts.Serial)
if !ok {
return nil, fmt.Errorf("cannot use device serial assertion of type %q", got.Type().Name)
}
return serial, nil
}
// Assertion retrivies the assertion for the given type and primary key.
func (s *Store) Assertion(assertType *asserts.AssertionType, primaryKey []string, user *auth.UserState) (asserts.Assertion, error) {
u, err := s.assertionsURI.Parse(path.Join(assertType.Name, path.Join(primaryKey...)))
if err != nil {
return nil, err
}
v := url.Values{}
v.Set("max-format", strconv.Itoa(assertType.MaxSupportedFormat()))
u.RawQuery = v.Encode()
reqOptions := &requestOptions{
Method: "GET",
URL: u,
Accept: asserts.MediaType,
}
var asrt asserts.Assertion
resp, err := s.retryRequest(context.TODO(), s.client, reqOptions, user, func(ok bool, resp *http.Response) error {
var e error
if ok {
// decode assertion
dec := asserts.NewDecoder(resp.Body)
asrt, e = dec.Decode()
} else {
contentType := resp.Header.Get("Content-Type")
if contentType == jsonContentType || contentType == "application/problem+json" {
var svcErr assertionSvcError
dec := json.NewDecoder(resp.Body)
if e = dec.Decode(&svcErr); e != nil {
return fmt.Errorf("cannot decode assertion service error with HTTP status code %d: %v", resp.StatusCode, e)
}
if svcErr.Status == 404 {
return &AssertionNotFoundError{&asserts.Ref{Type: assertType, PrimaryKey: primaryKey}}
}
return fmt.Errorf("assertion service error: [%s] %q", svcErr.Title, svcErr.Detail)
}
}
return e
})
if err != nil {
return nil, err
}
if resp.StatusCode != 200 {
return nil, respToError(resp, "fetch assertion")
}
return asrt, err
}
// Known queries assertions with type assertTypeName and matching assertion headers.
func (client *Client) Known(assertTypeName string, headers map[string]string) ([]asserts.Assertion, error) {
path := fmt.Sprintf("/v2/assertions/%s", assertTypeName)
q := url.Values{}
if len(headers) > 0 {
for k, v := range headers {
q.Set(k, v)
}
}
response, err := client.raw("GET", path, q, nil, nil)
if err != nil {
return nil, fmt.Errorf("failed to query assertions: %v", err)
}
defer response.Body.Close()
if response.StatusCode != http.StatusOK {
return nil, parseError(response)
}
sanityCount, err := strconv.Atoi(response.Header.Get("X-Ubuntu-Assertions-Count"))
if err != nil {
return nil, fmt.Errorf("invalid assertions count")
}
dec := asserts.NewDecoder(response.Body)
asserts := []asserts.Assertion{}
// TODO: make sure asserts can decode and deal with unknown types
for {
a, err := dec.Decode()
if err == io.EOF {
break
}
if err != nil {
return nil, fmt.Errorf("failed to decode assertions: %v", err)
}
asserts = append(asserts, a)
}
if len(asserts) != sanityCount {
return nil, fmt.Errorf("response did not have the expected number of assertions")
}
return asserts, nil
}
func (as *assertsSuite) TestDecoderUnexpectedEOF(c *C) {
streamData := exampleBodyAndExtraHeaders + "\n" + exampleEmptyBodyAllDefaults
fstHeadEnd := strings.Index(exampleBodyAndExtraHeaders, "\n\n")
sndHeadEnd := len(exampleBodyAndExtraHeaders) + 1 + strings.Index(exampleEmptyBodyAllDefaults, "\n\n")
for _, brk := range []int{1, fstHeadEnd / 2, fstHeadEnd, fstHeadEnd + 1, fstHeadEnd + 2, fstHeadEnd + 6} {
stream := bytes.NewBufferString(streamData[:brk])
decoder := asserts.NewDecoderStressed(stream, 16, 1024, 1024, 1024)
_, err := decoder.Decode()
c.Check(err, Equals, io.ErrUnexpectedEOF, Commentf("brk: %d", brk))
}
for _, brk := range []int{sndHeadEnd, sndHeadEnd + 1} {
stream := bytes.NewBufferString(streamData[:brk])
decoder := asserts.NewDecoder(stream)
_, err := decoder.Decode()
c.Assert(err, IsNil)
_, err = decoder.Decode()
c.Check(err, Equals, io.ErrUnexpectedEOF, Commentf("brk: %d", brk))
}
}
// AddStream adds a stream of assertions to the batch.
// Returns references to to the assertions effectively added.
func (b *Batch) AddStream(r io.Reader) ([]*asserts.Ref, error) {
start := len(b.refs)
dec := asserts.NewDecoder(r)
for {
a, err := dec.Decode()
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
if err := b.Add(a); err != nil {
return nil, err
}
}
added := b.refs[start:]
if len(added) == 0 {
return nil, nil
}
refs := make([]*asserts.Ref, len(added))
copy(refs, added)
return refs, nil
}
// Assertion retrivies the assertion for the given type and primary key.
func (s *Store) Assertion(assertType *asserts.AssertionType, primaryKey []string, user *auth.UserState) (asserts.Assertion, error) {
url, err := s.assertionsURI.Parse(path.Join(assertType.Name, path.Join(primaryKey...)))
if err != nil {
return nil, err
}
reqOptions := &requestOptions{
Method: "GET",
URL: url,
Accept: asserts.MediaType,
}
resp, err := s.doRequest(s.client, reqOptions, user)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
contentType := resp.Header.Get("Content-Type")
if contentType == "application/json" || contentType == "application/problem+json" {
var svcErr assertionSvcError
dec := json.NewDecoder(resp.Body)
if err := dec.Decode(&svcErr); err != nil {
return nil, fmt.Errorf("cannot decode assertion service error with HTTP status code %d: %v", resp.StatusCode, err)
}
if svcErr.Status == 404 {
return nil, &AssertionNotFoundError{&asserts.Ref{Type: assertType, PrimaryKey: primaryKey}}
}
return nil, fmt.Errorf("assertion service error: [%s] %q", svcErr.Title, svcErr.Detail)
}
return nil, respToError(resp, "fetch assertion")
}
// and decode assertion
dec := asserts.NewDecoder(resp.Body)
return dec.Decode()
}
func (as *assertsSuite) TestDecodeEmptyStream(c *C) {
stream := new(bytes.Buffer)
decoder := asserts.NewDecoder(stream)
_, err := decoder.Decode()
c.Check(err, Equals, io.EOF)
}
