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tests: Improve coverage on signature v4 tests. (#3188) 

Fixes #3065
This commit is contained in:
Harshavardhana 2016-11-06 11:47:16 -08:00 committed by GitHub
parent 5ff30777e1
commit 9161016962
5 changed files with 148 additions and 29 deletions
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20
cmd/signature-v4-parser.go
View File

@ -74,7 +74,7 @@ func parseCredentialHeader(credElement string) (credentialHeader, APIErrorCode)
return cred, ErrNone
}
// Parse signature string.
// Parse signature from signature tag.
func parseSignature(signElement string) (string, APIErrorCode) {
signFields := strings.Split(strings.TrimSpace(signElement), "=")
if len(signFields) != 2 {
@ -83,12 +83,15 @@ func parseSignature(signElement string) (string, APIErrorCode) {
if signFields[0] != "Signature" {
return "", ErrMissingSignTag
}
if signFields[1] == "" {
return "", ErrMissingFields
}
signature := signFields[1]
return signature, ErrNone
}
// Parse signed headers string.
func parseSignedHeaders(signedHdrElement string) ([]string, APIErrorCode) {
// Parse slice of signed headers from signed headers tag.
func parseSignedHeader(signedHdrElement string) ([]string, APIErrorCode) {
signedHdrFields := strings.Split(strings.TrimSpace(signedHdrElement), "=")
if len(signedHdrFields) != 2 {
return nil, ErrMissingFields
@ -96,6 +99,9 @@ func parseSignedHeaders(signedHdrElement string) ([]string, APIErrorCode) {
if signedHdrFields[0] != "SignedHeaders" {
return nil, ErrMissingSignHeadersTag
}
if signedHdrFields[1] == "" {
return nil, ErrMissingFields
}
signedHeaders := strings.Split(signedHdrFields[1], ";")
return signedHeaders, ErrNone
}
@ -122,8 +128,7 @@ type preSignValues struct {
// querystring += &X-Amz-Expires=timeout interval
// querystring += &X-Amz-SignedHeaders=signed_headers
// querystring += &X-Amz-Signature=signature
//{
//
// verifies if any of the necessary query params are missing in the presigned request.
func doesV4PresignParamsExist(query url.Values) APIErrorCode {
v4PresignQueryParams := []string{"X-Amz-Algorithm", "X-Amz-Credential", "X-Amz-Signature", "X-Amz-Date", "X-Amz-SignedHeaders", "X-Amz-Expires"}
@ -135,6 +140,7 @@ func doesV4PresignParamsExist(query url.Values) APIErrorCode {
return ErrNone
}
// Parses all the presigned signature values into separate elements.
func parsePreSignV4(query url.Values) (preSignValues, APIErrorCode) {
var err APIErrorCode
// verify whether the required query params exist.
@ -174,7 +180,7 @@ func parsePreSignV4(query url.Values) (preSignValues, APIErrorCode) {
return preSignValues{}, ErrNegativeExpires
}
// Save signed headers.
preSignV4Values.SignedHeaders, err = parseSignedHeaders("SignedHeaders=" + query.Get("X-Amz-SignedHeaders"))
preSignV4Values.SignedHeaders, err = parseSignedHeader("SignedHeaders=" + query.Get("X-Amz-SignedHeaders"))
if err != ErrNone {
return preSignValues{}, err
}
@ -231,7 +237,7 @@ func parseSignV4(v4Auth string) (signValues, APIErrorCode) {
}
// Save signed headers.
signV4Values.SignedHeaders, err = parseSignedHeaders(authFields[1])
signV4Values.SignedHeaders, err = parseSignedHeader(authFields[1])
if err != ErrNone {
return signValues{}, err
}

58
cmd/signature-v4-parser_test.go
View File

@ -228,13 +228,21 @@ func TestParseSignature(t *testing.T) {
expectedErrCode: ErrMissingFields,
},
// Test case - 2.
// SignElement does have 2 parts but doesn't have valid signature value.
// ErrMissingFields expected.
{
inputSignElement: "Signature=",
expectedSignStr: "",
expectedErrCode: ErrMissingFields,
},
// Test case - 3.
// SignElemenet with missing "SignatureTag",ErrMissingSignTag expected.
{
inputSignElement: "Sign=",
expectedSignStr: "",
expectedErrCode: ErrMissingSignTag,
},
// Test case - 3.
// Test case - 4.
// Test case with valid inputs.
{
inputSignElement: "Signature=abcd",
@ -289,8 +297,7 @@ func TestParseSignedHeaders(t *testing.T) {
}
for i, testCase := range testCases {
actualSignedHeaders, actualErrCode := parseSignedHeaders(testCase.inputSignElement)
actualSignedHeaders, actualErrCode := parseSignedHeader(testCase.inputSignElement)
if testCase.expectedErrCode != actualErrCode {
t.Errorf("Test %d: Expected the APIErrCode to be %d, got %d", i+1, testCase.expectedErrCode, actualErrCode)
}
@ -670,6 +677,50 @@ func TestParsePreSignV4(t *testing.T) {
expectedErrCode: ErrMalformedExpires,
},
// Test case - 6.
// Test case with negative X-Amz-Expires header.
{
inputQueryKeyVals: []string{
// valid "X-Amz-Algorithm" header.
"X-Amz-Algorithm", signV4Algorithm,
// valid "X-Amz-Credential" header.
"X-Amz-Credential", joinWithSlash(
"Z7IXGOO6BZ0REAN1Q26I",
sampleTimeStr,
"us-west-1",
"s3",
"aws4_request"),
// valid "X-Amz-Date" query.
"X-Amz-Date", queryTime.UTC().Format(iso8601Format),
"X-Amz-Expires", getDurationStr(-1),
"X-Amz-Signature", "abcd",
"X-Amz-SignedHeaders", "host;x-amz-content-sha256;x-amz-date",
},
expectedPreSignValues: preSignValues{},
expectedErrCode: ErrNegativeExpires,
},
// Test case - 7.
// Test case with empty X-Amz-SignedHeaders.
{
inputQueryKeyVals: []string{
// valid "X-Amz-Algorithm" header.
"X-Amz-Algorithm", signV4Algorithm,
// valid "X-Amz-Credential" header.
"X-Amz-Credential", joinWithSlash(
"Z7IXGOO6BZ0REAN1Q26I",
sampleTimeStr,
"us-west-1",
"s3",
"aws4_request"),
// valid "X-Amz-Date" query.
"X-Amz-Date", queryTime.UTC().Format(iso8601Format),
"X-Amz-Expires", getDurationStr(100),
"X-Amz-Signature", "abcd",
"X-Amz-SignedHeaders", "",
},
expectedPreSignValues: preSignValues{},
expectedErrCode: ErrMissingFields,
},
// Test case - 8.
// Test case with valid "X-Amz-Algorithm", "X-Amz-Credential", "X-Amz-Date" query value.
// Malformed Expiry, a valid expiry should be of format "<int>s".
{
@ -722,7 +773,6 @@ func TestParsePreSignV4(t *testing.T) {
}
// call the function under test.
parsedPreSign, actualErrCode := parsePreSignV4(inputQuery)
if testCase.expectedErrCode != actualErrCode {
t.Fatalf("Test %d: Expected the APIErrCode to be %d, got %d", i+1, testCase.expectedErrCode, actualErrCode)
}

15
cmd/signature-v4-utils.go
View File

@ -86,14 +86,13 @@ func getURLEncodedName(name string) string {
continue
default:
len := utf8.RuneLen(s)
if len < 0 {
return name
}
u := make([]byte, len)
utf8.EncodeRune(u, s)
for _, r := range u {
hex := hex.EncodeToString([]byte{r})
encodedName = encodedName + "%" + strings.ToUpper(hex)
if len > 0 {
u := make([]byte, len)
utf8.EncodeRune(u, s)
for _, r := range u {
hex := hex.EncodeToString([]byte{r})
encodedName = encodedName + "%" + strings.ToUpper(hex)
}
}
}
}

3
cmd/signature-v4-utils_test.go
View File

@ -86,10 +86,11 @@ func TestIsValidRegion(t *testing.T) {
{"us-east-1", "US", true},
{"us-west-1", "US", false},
{"us-west-1", "us-west-1", true},
// "US" was old naming convention for 'us-east-1'.
{"US", "US", true},
}
for i, testCase := range testCases {
actualResult := isValidRegion(testCase.inputReqRegion, testCase.inputConfRegion)
if testCase.expectedResult != actualResult {
t.Errorf("Test %d: Expected the result to `%v`, but instead got `%v`", i+1, testCase.expectedResult, actualResult)

81
cmd/signature-v4_test.go
View File

@ -100,8 +100,14 @@ func TestDoesPolicySignatureMatch(t *testing.T) {
}
func TestDoesPresignedSignatureMatch(t *testing.T) {
rootPath, err := newTestConfig("us-east-1")
if err != nil {
t.Fatal(err)
}
defer removeAll(rootPath)
// sha256 hash of "payload"
payload := "239f59ed55e737c77147cf55ad0c1b030b6d7ee748a7426952f9b852d5a935e5"
payloadSHA256 := "239f59ed55e737c77147cf55ad0c1b030b6d7ee748a7426952f9b852d5a935e5"
now := time.Now().UTC()
credentialTemplate := "%s/%s/%s/s3/aws4_request"
@ -152,7 +158,7 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), "us-west-1"),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
region: "us-east-1",
expected: ErrInvalidRegion,
@ -166,7 +172,7 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), "us-west-1"),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
region: "us-west-1",
expected: ErrUnsignedHeaders,
@ -180,7 +186,7 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), serverConfig.GetRegion()),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
region: serverConfig.GetRegion(),
expected: ErrUnsignedHeaders,
@ -194,11 +200,11 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), serverConfig.GetRegion()),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
headers: map[string]string{
"X-Amz-Date": now.AddDate(0, 0, -2).Format(iso8601Format),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
region: serverConfig.GetRegion(),
expected: ErrExpiredPresignRequest,
@ -212,15 +218,72 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), serverConfig.GetRegion()),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
headers: map[string]string{
"X-Amz-Date": now.Format(iso8601Format),
"X-Amz-Content-Sha256": payload,
"X-Amz-Content-Sha256": payloadSHA256,
},
region: serverConfig.GetRegion(),
expected: ErrSignatureDoesNotMatch,
},
// (8) Should error if the request is not ready yet, ie X-Amz-Date is in the future.
{
queryParams: map[string]string{
"X-Amz-Algorithm": signV4Algorithm,
"X-Amz-Date": now.Add(1 * time.Hour).Format(iso8601Format),
"X-Amz-Expires": "60",
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), serverConfig.GetRegion()),
"X-Amz-Content-Sha256": payloadSHA256,
},
headers: map[string]string{
"X-Amz-Date": now.Format(iso8601Format),
"X-Amz-Content-Sha256": payloadSHA256,
},
region: serverConfig.GetRegion(),
expected: ErrRequestNotReadyYet,
},
// (9) Should not error with invalid region instead, call should proceed
// with sigature does not match.
{
queryParams: map[string]string{
"X-Amz-Algorithm": signV4Algorithm,
"X-Amz-Date": now.Format(iso8601Format),
"X-Amz-Expires": "60",
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), serverConfig.GetRegion()),
"X-Amz-Content-Sha256": payloadSHA256,
},
headers: map[string]string{
"X-Amz-Date": now.Format(iso8601Format),
"X-Amz-Content-Sha256": payloadSHA256,
},
region: "",
expected: ErrSignatureDoesNotMatch,
},
// (10) Should error with signature does not match. But handles
// query params which do not precede with "x-amz-" header.
{
queryParams: map[string]string{
"X-Amz-Algorithm": signV4Algorithm,
"X-Amz-Date": now.Format(iso8601Format),
"X-Amz-Expires": "60",
"X-Amz-Signature": "badsignature",
"X-Amz-SignedHeaders": "host;x-amz-content-sha256;x-amz-date",
"X-Amz-Credential": fmt.Sprintf(credentialTemplate, serverConfig.GetCredential().AccessKeyID, now.Format(yyyymmdd), serverConfig.GetRegion()),
"X-Amz-Content-Sha256": payloadSHA256,
"response-content-type": "application/json",
},
headers: map[string]string{
"X-Amz-Date": now.Format(iso8601Format),
"X-Amz-Content-Sha256": payloadSHA256,
},
region: "",
expected: ErrSignatureDoesNotMatch,
},
}
// Run each test case individually.
@ -243,7 +306,7 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
}
// Check if it matches!
err := doesPresignedSignatureMatch(payload, req, testCase.region)
err := doesPresignedSignatureMatch(payloadSHA256, req, testCase.region)
if err != testCase.expected {
t.Errorf("(%d) expected to get %s, instead got %s", i, niceError(testCase.expected), niceError(err))
}