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introduce authy challenger

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This commit is contained in:
Boshi Lian 2019-01-30 16:46:38 -08:00
parent 68627eb835
commit a48f4238e7
27 changed files with 2136 additions and 0 deletions
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35
Gopkg.lock generated
View file

@ -58,6 +58,14 @@
revision = "7f2434bc10da710debe5c4315ed6d4df454b4024"
version = "v0.1.0"
[[projects]]
digest = "1:ce22663ae8e32354d55110a3791d8c8ceaf67118e5f4510f8daf3077d8469f7a"
name = "github.com/dcu/go-authy"
packages = ["."]
pruneopts = "NUT"
revision = "0c8491e20fe9225f4902f789480d7166eab098f7"
version = "v1.0.1"
[[projects]]
branch = "master"
digest = "1:3a0e8b1ac13f6daa8e6e18b0129a8f1498ade5530fb55cba67c7312ddbb1c78c"
@ -85,6 +93,24 @@
revision = "72cd26f257d44c1114970e19afddcd812016007e"
version = "v1.4.1"
[[projects]]
digest = "1:ce81ffad3aa4553bf838a989f1ae04a8eecbcfff602af18a27da447c610e8115"
name = "github.com/gojektech/heimdall"
packages = [
".",
"httpclient",
]
pruneopts = "NUT"
revision = "v5.0.0"
[[projects]]
digest = "1:8a48298b54e39f555ae307275ec80b17deeb8825edd97b81cd313787ab86a54a"
name = "github.com/gojektech/valkyrie"
packages = ["."]
pruneopts = "NUT"
revision = "6aee720afcdffc337029305c126e0079491063f0"
version = "v1.0"
[[projects]]
branch = "master"
digest = "1:745fa6a19eb7613f207a17b42db0c4425d553fd38ee9387bc686a4b87beb178b"
@ -170,6 +196,14 @@
pruneopts = "NUT"
revision = "f4cd9f5e29232537a12db1678f48c702ad6896b7"
[[projects]]
digest = "1:14715f705ff5dfe0ffd6571d7d201dd8e921030f8070321a79380d8ca4ec1a24"
name = "github.com/pkg/errors"
packages = ["."]
pruneopts = "NUT"
revision = "ba968bfe8b2f7e042a574c888954fccecfa385b4"
version = "v0.8.1"
[[projects]]
digest = "1:f2805adeca595d7dbd25173b57f83daaa79f44d43475263c4e34b05020eac9a7"
name = "go.opencensus.io"
@ -341,6 +375,7 @@
"github.com/Azure/go-autorest/autorest",
"github.com/Azure/go-autorest/autorest/adal",
"github.com/Azure/go-autorest/autorest/azure",
"github.com/dcu/go-authy",
"github.com/go-sql-driver/mysql",
"github.com/gokyle/sshkey",
"github.com/jessevdk/go-flags",

21
sshpiperd/challenger/authy/authy.go Normal file
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@ -0,0 +1,21 @@
package authy
import (
"github.com/tg123/sshpiper/sshpiperd/challenger"
)
func (authyClient) GetName() string {
return "authy"
}
func (a *authyClient) GetOpts() interface{} {
return &a.Config
}
func (a *authyClient) GetHandler() challenger.Handler {
return a.challenge
}
func init() {
challenger.Register("authy", &authyClient{})
}

31
sshpiperd/challenger/authy/authyid.go Normal file
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@ -0,0 +1,31 @@
package authy
import (
"bufio"
"fmt"
"os"
"strings"
)
func (a authyClient) findAuthyId(user string) (string, error) {
// TODO a better way to handle large database
file, err := os.Open(a.Config.File)
if err != nil {
return "", err
}
scanner := bufio.NewScanner(file)
for scanner.Scan() {
fields := strings.Fields(scanner.Text())
if len(fields) >= 2 {
if fields[0] == user {
return fields[1], nil
}
}
}
return "", fmt.Errorf("authy id for user not found")
}

50
sshpiperd/challenger/authy/authyid_test.go Normal file
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@ -0,0 +1,50 @@
package authy
import (
"io/ioutil"
"os"
"testing"
)
func Test_findAuthyId(t *testing.T) {
a := authyClient{}
tmpfile, err := ioutil.TempFile("", "authyid")
if err != nil {
t.Fatalf("cannot create temp file %v", err)
}
defer os.Remove(tmpfile.Name())
a.Config.File = tmpfile.Name()
ioutil.WriteFile(tmpfile.Name(), []byte(`
piper 123
hook 456
hook 789
`), os.ModePerm)
{
id, err := a.findAuthyId("piper")
if err != nil {
t.Fatalf("findId failed %v", err)
}
if id != "123" {
t.Error("find id return wrong value")
}
}
{
id, err := a.findAuthyId("hook")
if err != nil {
t.Fatalf("findId failed %v", err)
}
if id != "456" {
t.Error("find id return wrong value")
}
}
}

96
sshpiperd/challenger/authy/handler.go Normal file
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@ -0,0 +1,96 @@
package authy
import (
"fmt"
"log"
"net/url"
"time"
"golang.org/x/crypto/ssh"
"github.com/dcu/go-authy"
)
type authyClient struct {
Config struct {
APIKey string `long:"challenger-authy-apikey" description:"Authy API Key" env:"SSHPIPERD_CHALLENGER_AUTHY_APIKEY" ini-name:"challenger-authy-apikey"`
Method string `long:"challenger-authy-method" default:"token" description:"Authy authentication method" env:"SSHPIPERD_CHALLENGER_AUTHY_METHOD" ini-name:"challenger-authy-method" choice:"token" choice:"onetouch"`
File string `long:"challenger-authy-idfile" description:"Path to a file with ssh_name [space] authy_id per line (first line win if duplicate)" env:"SSHPIPERD_CHALLENGER_AUTHY_IDFILE" ini-name:"challenger-authy-idfile"`
}
authyAPI *authy.Authy
logger *log.Logger
}
func (a *authyClient) Init(logger *log.Logger) error {
a.logger = logger
a.authyAPI = authy.NewAuthyAPI(a.Config.APIKey)
return nil
}
func (a *authyClient) challenge(conn ssh.ConnMetadata, client ssh.KeyboardInteractiveChallenge) (ssh.AdditionalChallengeContext, error) {
user := conn.User()
authyId, err := a.findAuthyId(user)
if err != nil {
return nil, err
}
switch a.Config.Method {
case "token":
ans, err := client(user, "", []string{"Please input your Authy token: "}, []bool{true})
if err != nil {
return nil, err
}
verification, err := a.authyAPI.VerifyToken(authyId, ans[0], url.Values{})
if err != nil {
return nil, err
}
if verification.Valid() {
return nil, nil
}
return nil, fmt.Errorf(verification.Message)
case "onetouch":
_, err = client(conn.User(), "Please verify login on your Authy app", nil, nil)
if err != nil {
return nil, err
}
details := authy.Details{
"User": user,
"ClientIP": conn.RemoteAddr().String(),
}
approvalRequest, err := a.authyAPI.SendApprovalRequest(authyId, "Log to SSH server", details, url.Values{})
if err != nil {
return nil, err
}
status, err := a.authyAPI.WaitForApprovalRequest(approvalRequest.UUID, time.Second*30, url.Values{})
if err != nil {
return nil, err
}
if status == authy.OneTouchStatusApproved {
return nil, nil
}
_, err = client(conn.User(), "Authy OneTouch failed", nil, nil)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("one touch faild code: %v", status)
default:
return nil, fmt.Errorf("unsupported authy method")
}
}

1
sshpiperd/loader.go
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@ -4,6 +4,7 @@ import (
_ "github.com/tg123/sshpiper/sshpiperd/upstream/database"
_ "github.com/tg123/sshpiper/sshpiperd/upstream/workingdir"
_ "github.com/tg123/sshpiper/sshpiperd/challenger/authy"
_ "github.com/tg123/sshpiper/sshpiperd/challenger/azdevicecode"
_ "github.com/tg123/sshpiper/sshpiperd/challenger/pam"

20
vendor/github.com/dcu/go-authy/LICENSE.txt generated vendored Normal file
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@ -0,0 +1,20 @@
Copyright (c) 2015
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

306
vendor/github.com/dcu/go-authy/api.go generated vendored Normal file
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@ -0,0 +1,306 @@
package authy
import (
"fmt"
"io"
"log"
"net"
"net/http"
"net/url"
"os"
"strconv"
"strings"
"time"
"github.com/gojektech/heimdall"
"github.com/gojektech/heimdall/httpclient"
)
var (
// Logger is the default logger of this package. You can override it with your own.
Logger = log.New(os.Stderr, "[authy] ", log.LstdFlags)
_Dialer = &net.Dialer{
Timeout: 5 * time.Second,
KeepAlive: 30 * time.Second,
}
// DefaultTransport is the default transport struct for the HTTP client
DefaultTransport = &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: _Dialer.DialContext,
MaxIdleConns: 128,
IdleConnTimeout: 30 * time.Second,
TLSHandshakeTimeout: 5 * time.Second,
ExpectContinueTimeout: 3 * time.Second,
}
)
const (
longPollingDelay = 2000 * time.Millisecond
)
const (
// SMS indicates the message will be delivered via SMS
SMS = "sms"
// Voice indicates the message will be delivered via phone call
Voice = "call"
)
// Details for OneTouch transaction
type Details map[string]string
// Authy contains credentials to connect to the Authy's API
type Authy struct {
APIKey string
BaseURL string
Client heimdall.Client
}
// NewAuthyAPI returns an instance of Authy pointing to production.
func NewAuthyAPI(apiKey string) *Authy {
apiURL := "https://api.authy.com"
initalTimeout := 2 * time.Millisecond
maxTimeout := 1000 * time.Millisecond
exponentFactor := 2.0
maximumJitterInterval := 2 * time.Millisecond
backoff := heimdall.NewExponentialBackoff(initalTimeout, maxTimeout, exponentFactor, maximumJitterInterval)
client := httpclient.NewClient(
httpclient.WithHTTPTimeout(1*time.Second),
httpclient.WithRetrier(heimdall.NewRetrier(backoff)),
httpclient.WithRetryCount(4),
httpclient.WithHTTPClient(&http.Client{
Transport: DefaultTransport,
}),
)
return &Authy{
APIKey: apiKey,
BaseURL: apiURL,
Client: client,
}
}
// RegisterUser register a new user given an email and phone number.
func (authy *Authy) RegisterUser(email string, countryCode int, phoneNumber string, params url.Values) (*User, error) {
Logger.Println("Creating Authy user with", email, ",", phoneNumber, "and", countryCode)
path := "/protected/json/users/new"
params.Set("user[cellphone]", phoneNumber)
params.Set("user[country_code]", strconv.Itoa(countryCode))
params.Set("user[email]", email)
response, err := authy.DoRequest("POST", path, params)
if err != nil {
return nil, err
}
userResponse, err := NewUser(response)
return userResponse, err
}
// UserStatus returns a set of data about a user.
func (authy *Authy) UserStatus(id string, params url.Values) (*UserStatus, error) {
Logger.Println("Finding Authy user with id", id)
path := fmt.Sprintf("/protected/json/users/%s/status", id)
response, err := authy.DoRequest("GET", path, params)
if err != nil {
return nil, err
}
statusResponse, err := NewUserStatus(response)
return statusResponse, err
}
// VerifyToken verifies the given token
func (authy *Authy) VerifyToken(userID string, token string, params url.Values) (*TokenVerification, error) {
path := "/protected/json/verify/" + url.QueryEscape(token) + "/" + url.QueryEscape(userID)
response, err := authy.DoRequest("GET", path, params)
if err != nil {
Logger.Println("Error while contacting the API:", err)
return nil, err
}
defer closeResponseBody(response)
tokenVerification, err := NewTokenVerification(response)
return tokenVerification, err
}
// RequestSMS requests a SMS for the given userID
func (authy *Authy) RequestSMS(userID string, params url.Values) (*SMSRequest, error) {
path := "/protected/json/sms/" + url.QueryEscape(userID)
response, err := authy.DoRequest("GET", path, params)
if err != nil {
return nil, err
}
defer closeResponseBody(response)
smsVerification, err := NewSMSRequest(response)
return smsVerification, err
}
// RequestPhoneCall requests a phone call for the given user
func (authy *Authy) RequestPhoneCall(userID string, params url.Values) (*PhoneCallRequest, error) {
path := "/protected/json/call/" + url.QueryEscape(userID)
response, err := authy.DoRequest("GET", path, params)
if err != nil {
return nil, err
}
defer closeResponseBody(response)
smsVerification, err := NewPhoneCallRequest(response)
return smsVerification, err
}
// SendApprovalRequest sends a OneTouch's approval request to the given user.
func (authy *Authy) SendApprovalRequest(userID string, message string, details Details, params url.Values) (*ApprovalRequest, error) {
addParamsForOneTouch(params, message, details)
path := fmt.Sprintf(`/onetouch/json/users/%s/approval_requests`, url.QueryEscape(userID))
response, err := authy.DoRequest("POST", path, params)
if err != nil {
return nil, err
}
defer closeResponseBody(response)
return NewApprovalRequest(response)
}
// FindApprovalRequest finds an approval request given its uuid.
func (authy *Authy) FindApprovalRequest(uuid string, params url.Values) (*ApprovalRequest, error) {
path := fmt.Sprintf("/onetouch/json/approval_requests/%s", uuid)
response, err := authy.DoRequest("GET", path, params)
if err != nil {
return nil, err
}
defer closeResponseBody(response)
approvalRequest, err := NewApprovalRequest(response)
if err != nil {
return nil, err
}
approvalRequest.UUID = uuid
return approvalRequest, nil
}
// WaitForApprovalRequest waits until the status of an approval request has changed or times out.
func (authy *Authy) WaitForApprovalRequest(uuid string, maxDuration time.Duration, params url.Values) (OneTouchStatus, error) {
for maxDuration > 0 {
request, err := authy.FindApprovalRequest(uuid, url.Values{})
if err != nil {
return OneTouchStatusPending, err
}
if request.Status != OneTouchStatusPending {
return request.Status, nil
}
maxDuration -= longPollingDelay
time.Sleep(longPollingDelay)
}
return OneTouchStatusExpired, nil
}
// StartPhoneVerification starts the phone verification process.
func (authy *Authy) StartPhoneVerification(countryCode int, phoneNumber string, via string, params url.Values) (*PhoneVerificationStart, error) {
params.Set("country_code", strconv.Itoa(countryCode))
params.Set("phone_number", phoneNumber)
params.Set("via", via)
path := fmt.Sprintf("/protected/json/phones/verification/start")
response, err := authy.DoRequest("POST", path, params)
if err != nil {
return nil, err
}
defer closeResponseBody(response)
return NewPhoneVerificationStart(response)
}
// CheckPhoneVerification checks the given verification code.
func (authy *Authy) CheckPhoneVerification(countryCode int, phoneNumber string, verificationCode string, params url.Values) (*PhoneVerificationCheck, error) {
params.Set("country_code", strconv.Itoa(countryCode))
params.Set("phone_number", phoneNumber)
params.Set("verification_code", verificationCode)
path := fmt.Sprintf("/protected/json/phones/verification/check")
response, err := authy.DoRequest("GET", path, params)
if err != nil {
return nil, err
}
defer closeResponseBody(response)
return NewPhoneVerificationCheck(response)
}
// DoRequest performs a HTTP request to the Authy API
func (authy *Authy) DoRequest(method string, path string, params url.Values) (*http.Response, error) {
apiURL := authy.buildURL(path)
// Set api_key to all requests.
params.Set("api_key", authy.APIKey)
var bodyReader io.Reader
switch method {
case "POST":
{
encodedParams := params.Encode()
bodyReader = strings.NewReader(encodedParams)
}
case "GET":
{
apiURL += "?" + params.Encode()
}
}
request, err := http.NewRequest(method, apiURL, bodyReader)
if method == "POST" {
request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
}
if err != nil {
Logger.Println("Error creating HTTP request:", err)
return nil, err
}
response, err := authy.Client.Do(request)
return response, err
}
func (authy *Authy) buildURL(path string) string {
if path[0] != '/' {
path = "/" + path
}
url := authy.BaseURL + path
return url
}
func closeResponseBody(response *http.Response) {
err := response.Body.Close()
if err != nil {
Logger.Println("Error closing response body:", err)
}
}
func addParamsForOneTouch(params url.Values, message string, details map[string]string) url.Values {
params.Set("message", message)
for key, value := range details {
params.Set(fmt.Sprintf("details[%s]", key), value)
}
return params
}

66
vendor/github.com/dcu/go-authy/approval_request.go generated vendored Normal file
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@ -0,0 +1,66 @@
package authy
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)
// OneTouchStatus is the type of the OneTouch statuses.
type OneTouchStatus string
var (
// OneTouchStatusApproved is the approved status of an approval request
OneTouchStatusApproved OneTouchStatus = "approved"
// OneTouchStatusPending is the pending status of an approval request
OneTouchStatusPending OneTouchStatus = "pending"
// OneTouchStatusDenied is the denied status of an approval request
OneTouchStatusDenied OneTouchStatus = "denied"
// OneTouchStatusExpired is the expired status of an approval request
OneTouchStatusExpired OneTouchStatus = "expired"
)
// ApprovalRequest is the approval request response.
type ApprovalRequest struct {
HTTPResponse *http.Response
Status OneTouchStatus `json:"status"`
UUID string `json:"uuid"`
Notified bool `json:"notified"`
}
// NewApprovalRequest returns an instance of ApprovalRequest.
func NewApprovalRequest(response *http.Response) (*ApprovalRequest, error) {
body, err := ioutil.ReadAll(response.Body)
if err != nil {
return nil, err
}
jsonResponse := struct {
Success bool `json:"success"`
ApprovalRequest *ApprovalRequest `json:"approval_request"`
Message string `json:"message"`
}{}
err = json.Unmarshal(body, &jsonResponse)
if err != nil {
return nil, err
}
if !jsonResponse.Success {
return nil, fmt.Errorf("invalid approval request response: %s", jsonResponse.Message)
}
approvalRequest := jsonResponse.ApprovalRequest
approvalRequest.HTTPResponse = response
return approvalRequest, nil
}
// Valid returns true if the approval request was valid.
func (request *ApprovalRequest) Valid() bool {
return request.HTTPResponse.StatusCode == 200
}

37
vendor/github.com/dcu/go-authy/phone_call_request.go generated vendored Normal file
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@ -0,0 +1,37 @@
package authy
import (
"encoding/json"
"io/ioutil"
"net/http"
)
// PhoneCallRequest encapsulates the response from the Authy API
type PhoneCallRequest struct {
HTTPResponse *http.Response
Message string `json:"message"`
}
// NewPhoneCallRequest returns an instance of a PhoneCallRequest
func NewPhoneCallRequest(response *http.Response) (*PhoneCallRequest, error) {
request := &PhoneCallRequest{HTTPResponse: response}
body, err := ioutil.ReadAll(response.Body)
if err != nil {
Logger.Println("Error reading from API:", err)
return request, err
}
err = json.Unmarshal(body, &request)
if err != nil {
Logger.Println("Error parsing JSON:", err)
return request, err
}
return request, nil
}
// Valid returns true if the request was valid.
func (request *PhoneCallRequest) Valid() bool {
return request.HTTPResponse.StatusCode == 200
}

57
vendor/github.com/dcu/go-authy/phone_verification.go generated vendored Normal file
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@ -0,0 +1,57 @@
package authy
import (
"encoding/json"
"io/ioutil"
"net/http"
)
// PhoneVerificationStart encapsulates the response from the Authy API when requesting a phone verification.
type PhoneVerificationStart struct {
HTTPResponse *http.Response
UUID string `json:"uuid"`
Message string `json:"message"`
Success bool `json:"success"`
Carrier string `json:"carrier"`
}
// NewPhoneVerificationStart receives a http request, parses the body and return an instance of PhoneVerification
func NewPhoneVerificationStart(response *http.Response) (*PhoneVerificationStart, error) {
phoneVerification := &PhoneVerificationStart{HTTPResponse: response}
body, err := ioutil.ReadAll(response.Body)
if err != nil {
return phoneVerification, err
}
err = json.Unmarshal(body, &phoneVerification)
if err != nil {
return phoneVerification, err
}
return phoneVerification, nil
}
// PhoneVerificationCheck encapsulates the response from the Authy API when checking a phone verification.
type PhoneVerificationCheck struct {
HTTPResponse *http.Response
Message string `json:"message"`
Success bool `json:"success"`
}
// NewPhoneVerificationCheck receives a http request, parses the body and return an instance of PhoneVerification
func NewPhoneVerificationCheck(response *http.Response) (*PhoneVerificationCheck, error) {
phoneVerification := &PhoneVerificationCheck{HTTPResponse: response}
body, err := ioutil.ReadAll(response.Body)
if err != nil {
return phoneVerification, err
}
err = json.Unmarshal(body, &phoneVerification)
if err != nil {
return phoneVerification, err
}
return phoneVerification, nil
}

37
vendor/github.com/dcu/go-authy/sms_request.go generated vendored Normal file
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@ -0,0 +1,37 @@
package authy
import (
"encoding/json"
"io/ioutil"
"net/http"
)
// SMSRequest encapsulates the response from the Authy API when requesting a SMS
type SMSRequest struct {
HTTPResponse *http.Response
Message string `json:"message"`
}
// NewSMSRequest returns an instance of SMSRequest
func NewSMSRequest(response *http.Response) (*SMSRequest, error) {
request := &SMSRequest{HTTPResponse: response}
body, err := ioutil.ReadAll(response.Body)
if err != nil {
Logger.Println("Error reading from API:", err)
return request, err
}
err = json.Unmarshal(body, &request)
if err != nil {
Logger.Println("Error parsing JSON:", err)
return request, err
}
return request, nil
}
// Valid returns true if the SMS was sent
func (request *SMSRequest) Valid() bool {
return request.HTTPResponse.StatusCode == 200
}

43
vendor/github.com/dcu/go-authy/token_verification.go generated vendored Normal file
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@ -0,0 +1,43 @@
package authy
import (
"encoding/json"
"io/ioutil"
"net/http"
)
// TokenVerification encapsulates the response from Authy API when verifying a token.
type TokenVerification struct {
HTTPResponse *http.Response
Message string `json:"message"`
Token string `json:"token"`
Success interface{} `json:"success"`
}
// NewTokenVerification creates an instance of a TokenVerification
func NewTokenVerification(response *http.Response) (*TokenVerification, error) {
tokenVerification := &TokenVerification{HTTPResponse: response}
body, err := ioutil.ReadAll(response.Body)
if err != nil {
Logger.Println("Error reading from API:", err)
return tokenVerification, err
}
err = json.Unmarshal(body, &tokenVerification)
if err != nil {
Logger.Println("Error parsing JSON:", err)
return tokenVerification, err
}
return tokenVerification, nil
}
// Valid returns true if the verification was valid.
func (verification *TokenVerification) Valid() bool {
if verification.HTTPResponse.StatusCode == 200 && verification.Token == "is valid" {
return true
}
return false
}

84
vendor/github.com/dcu/go-authy/user.go generated vendored Normal file
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@ -0,0 +1,84 @@
package authy
import (
"encoding/json"
"io/ioutil"
"net/http"
"strconv"
)
// User is an Authy User
type User struct {
HTTPResponse *http.Response
ID string
UserData struct {
ID int `json:"id"`
} `json:"user"`
Errors map[string]string `json:"errors"`
Message string `json:"message"`
}
// UserStatus is a user with information loaded from Authy API
type UserStatus struct {
HTTPResponse *http.Response
ID string
StatusData struct {
ID int `json:"authy_id"`
Confirmed bool `json:"confirmed"`
Registered bool `json:"registered"`
Country int `json:"country_code"`
PhoneNumber string `json:"phone_number"`
Devices []string `json:"devices"`
} `json:"status"`
Message string `json:"message"`
Success bool `json:"success"`
}
// NewUser returns an instance of User
func NewUser(httpResponse *http.Response) (*User, error) {
userResponse := &User{HTTPResponse: httpResponse}
defer closeResponseBody(httpResponse)
body, err := ioutil.ReadAll(httpResponse.Body)
if err != nil {
Logger.Println("Error reading from API:", err)
return userResponse, err
}
err = json.Unmarshal(body, userResponse)
if err != nil {
Logger.Println("Error parsing JSON:", err)
return userResponse, err
}
userResponse.ID = strconv.Itoa(userResponse.UserData.ID)
return userResponse, nil
}
// NewUserStatus returns an instance of UserStatus
func NewUserStatus(httpResponse *http.Response) (*UserStatus, error) {
statusResponse := &UserStatus{HTTPResponse: httpResponse}
defer closeResponseBody(httpResponse)
body, err := ioutil.ReadAll(httpResponse.Body)
if err != nil {
Logger.Println("Error reading from API:", err)
return statusResponse, err
}
err = json.Unmarshal(body, statusResponse)
if err != nil {
Logger.Println("Error parsing JSON:", err)
return statusResponse, err
}
statusResponse.ID = strconv.Itoa(statusResponse.StatusData.ID)
return statusResponse, nil
}
// Valid returns true if the user was created successfully
func (response *User) Valid() bool {
return response.HTTPResponse.StatusCode == 200
}

5
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# Heimdall - Authors
For people who've contributed to [Heimdall](https://github.com/gojektech/heimdall),
_please checkout [Contributors Graphs](https://github.com/gojektech/heimdall/graphs/contributors)
on [GO-JEK Tech's GitHub](https://github.com/gojektech)._

202
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

64
vendor/github.com/gojektech/heimdall/backoff.go generated vendored Normal file
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package heimdall
import (
"math"
"math/rand"
"time"
)
// Backoff interface defines contract for backoff strategies
type Backoff interface {
Next(retry int) time.Duration
}
type constantBackoff struct {
backoffInterval int64
maximumJitterInterval int64
}
func init() {
rand.Seed(time.Now().UnixNano())
}
// NewConstantBackoff returns an instance of ConstantBackoff
func NewConstantBackoff(backoffInterval, maximumJitterInterval time.Duration) Backoff {
return &constantBackoff{
backoffInterval: int64(backoffInterval / time.Millisecond),
maximumJitterInterval: int64(maximumJitterInterval / time.Millisecond),
}
}
// Next returns next time for retrying operation with constant strategy
func (cb *constantBackoff) Next(retry int) time.Duration {
if retry <= 0 {
return 0 * time.Millisecond
}
return (time.Duration(cb.backoffInterval) * time.Millisecond) + (time.Duration(rand.Int63n(cb.maximumJitterInterval)) * time.Millisecond)
}
type exponentialBackoff struct {
exponentFactor float64
initialTimeout float64
maxTimeout float64
maximumJitterInterval int64
}
// NewExponentialBackoff returns an instance of ExponentialBackoff
func NewExponentialBackoff(initialTimeout, maxTimeout time.Duration, exponentFactor float64, maximumJitterInterval time.Duration) Backoff {
return &exponentialBackoff{
exponentFactor: exponentFactor,
initialTimeout: float64(initialTimeout / time.Millisecond),
maxTimeout: float64(maxTimeout / time.Millisecond),
maximumJitterInterval: int64(maximumJitterInterval / time.Millisecond),
}
}
// Next returns next time for retrying operation with exponential strategy
func (eb *exponentialBackoff) Next(retry int) time.Duration {
if retry <= 0 {
return 0 * time.Millisecond
}
return time.Duration(math.Min(eb.initialTimeout+math.Pow(eb.exponentFactor, float64(retry)), eb.maxTimeout)+float64(rand.Int63n(eb.maximumJitterInterval))) * time.Millisecond
}

22
vendor/github.com/gojektech/heimdall/client.go generated vendored Normal file
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package heimdall
import (
"io"
"net/http"
)
// Doer interface has the method required to use a type as custom http client.
// The net/*http.Client type satisfies this interface.
type Doer interface {
Do(*http.Request) (*http.Response, error)
}
// Client Is a generic HTTP client interface
type Client interface {
Get(url string, headers http.Header) (*http.Response, error)
Post(url string, body io.Reader, headers http.Header) (*http.Response, error)
Put(url string, body io.Reader, headers http.Header) (*http.Response, error)
Patch(url string, body io.Reader, headers http.Header) (*http.Response, error)
Delete(url string, headers http.Header) (*http.Response, error)
Do(req *http.Request) (*http.Response, error)
}

167
vendor/github.com/gojektech/heimdall/httpclient/client.go generated vendored Normal file
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package httpclient
import (
"bytes"
"io"
"io/ioutil"
"net/http"
"time"
"github.com/gojektech/heimdall"
"github.com/gojektech/valkyrie"
"github.com/pkg/errors"
)
// Client is the http client implementation
type Client struct {
client heimdall.Doer
timeout time.Duration
retryCount int
retrier heimdall.Retriable
}
const (
defaultRetryCount = 0
defaultHTTPTimeout = 30 * time.Second
)
var _ heimdall.Client = (*Client)(nil)
// NewClient returns a new instance of http Client
func NewClient(opts ...Option) *Client {
client := Client{
timeout: defaultHTTPTimeout,
retryCount: defaultRetryCount,
retrier: heimdall.NewNoRetrier(),
}
for _, opt := range opts {
opt(&client)
}
if client.client == nil {
client.client = &http.Client{
Timeout: client.timeout,
}
}
return &client
}
// Get makes a HTTP GET request to provided URL
func (c *Client) Get(url string, headers http.Header) (*http.Response, error) {
var response *http.Response
request, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return response, errors.Wrap(err, "GET - request creation failed")
}
request.Header = headers
return c.Do(request)
}
// Post makes a HTTP POST request to provided URL and requestBody
func (c *Client) Post(url string, body io.Reader, headers http.Header) (*http.Response, error) {
var response *http.Response
request, err := http.NewRequest(http.MethodPost, url, body)
if err != nil {
return response, errors.Wrap(err, "POST - request creation failed")
}
request.Header = headers
return c.Do(request)
}
// Put makes a HTTP PUT request to provided URL and requestBody
func (c *Client) Put(url string, body io.Reader, headers http.Header) (*http.Response, error) {
var response *http.Response
request, err := http.NewRequest(http.MethodPut, url, body)
if err != nil {
return response, errors.Wrap(err, "PUT - request creation failed")
}
request.Header = headers
return c.Do(request)
}
// Patch makes a HTTP PATCH request to provided URL and requestBody
func (c *Client) Patch(url string, body io.Reader, headers http.Header) (*http.Response, error) {
var response *http.Response
request, err := http.NewRequest(http.MethodPatch, url, body)
if err != nil {
return response, errors.Wrap(err, "PATCH - request creation failed")
}
request.Header = headers
return c.Do(request)
}
// Delete makes a HTTP DELETE request with provided URL
func (c *Client) Delete(url string, headers http.Header) (*http.Response, error) {
var response *http.Response
request, err := http.NewRequest(http.MethodDelete, url, nil)
if err != nil {
return response, errors.Wrap(err, "DELETE - request creation failed")
}
request.Header = headers
return c.Do(request)
}
// Do makes an HTTP request with the native `http.Do` interface
func (c *Client) Do(request *http.Request) (*http.Response, error) {
request.Close = true
var bodyReader *bytes.Reader
if request.Body != nil {
reqData, err := ioutil.ReadAll(request.Body)
if err != nil {
return nil, err
}
bodyReader = bytes.NewReader(reqData)
request.Body = ioutil.NopCloser(bodyReader) // prevents closing the body between retries
}
multiErr := &valkyrie.MultiError{}
var response *http.Response
for i := 0; i <= c.retryCount; i++ {
if response != nil {
response.Body.Close()
}
var err error
response, err = c.client.Do(request)
if bodyReader != nil {
// Reset the body reader after the request since at this point it's already read
// Note that it's safe to ignore the error here since the 0,0 position is always valid
_, _ = bodyReader.Seek(0, 0)
}
if err != nil {
multiErr.Push(err.Error())
backoffTime := c.retrier.NextInterval(i)
time.Sleep(backoffTime)
continue
}
if response.StatusCode >= http.StatusInternalServerError {
backoffTime := c.retrier.NextInterval(i)
time.Sleep(backoffTime)
continue
}
multiErr = &valkyrie.MultiError{} // Clear errors if any iteration succeeds
break
}
return response, multiErr.HasError()
}

38
vendor/github.com/gojektech/heimdall/httpclient/options.go generated vendored Normal file
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package httpclient
import (
"time"
"github.com/gojektech/heimdall"
)
// Option represents the client options
type Option func(*Client)
// WithHTTPTimeout sets hystrix timeout
func WithHTTPTimeout(timeout time.Duration) Option {
return func(c *Client) {
c.timeout = timeout
}
}
// WithRetryCount sets the retry count for the hystrixHTTPClient
func WithRetryCount(retryCount int) Option {
return func(c *Client) {
c.retryCount = retryCount
}
}
// WithRetrier sets the strategy for retrying
func WithRetrier(retrier heimdall.Retriable) Option {
return func(c *Client) {
c.retrier = retrier
}
}
// WithHTTPClient sets a custom http client
func WithHTTPClient(client heimdall.Doer) Option {
return func(c *Client) {
c.client = client
}
}

51
vendor/github.com/gojektech/heimdall/retry.go generated vendored Normal file
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package heimdall
import "time"
// Retriable defines contract for retriers to implement
type Retriable interface {
NextInterval(retry int) time.Duration
}
// RetriableFunc is an adapter to allow the use of ordinary functions
// as a Retriable
type RetriableFunc func(retry int) time.Duration
// NextInterval calls f(retry)
func (f RetriableFunc) NextInterval(retry int) time.Duration {
return f(retry)
}
type retrier struct {
backoff Backoff
}
// NewRetrier returns retrier with some backoff strategy
func NewRetrier(backoff Backoff) Retriable {
return &retrier{
backoff: backoff,
}
}
// NewRetrierFunc returns a retrier with a retry function defined
func NewRetrierFunc(f RetriableFunc) Retriable {
return f
}
// NextInterval returns next retriable time
func (r *retrier) NextInterval(retry int) time.Duration {
return r.backoff.Next(retry)
}
type noRetrier struct {
}
// NewNoRetrier returns a null object for retriable
func NewNoRetrier() Retriable {
return &noRetrier{}
}
// NextInterval returns next retriable time, always 0
func (r *noRetrier) NextInterval(retry int) time.Duration {
return 0 * time.Millisecond
}

5
vendor/github.com/gojektech/valkyrie/AUTHORS.md generated vendored Normal file
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# Valkyrie - Authors
For people who've contributed to [Valkyrie](https://github.com/gojektech/valkyrie),
_please checkout [Contributors Graphs](https://github.com/gojektech/valkyrie/graphs/contributors)
on [GO-JEK Tech's GitHub](https://github.com/gojektech)._

202
vendor/github.com/gojektech/valkyrie/LICENSE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
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same "printed page" as the copyright notice for easier
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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vendor/github.com/gojektech/valkyrie/multierror.go generated vendored Normal file
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package valkyrie
import (
"errors"
"strings"
"sync"
)
// MultiError implements error interface.
// An instance of MultiError has zero or more errors.
type MultiError struct {
mutex sync.Mutex
errs []error
}
// Push adds an error to MultiError.
func (m *MultiError) Push(errString string) {
m.mutex.Lock()
defer m.mutex.Unlock()
m.errs = append(m.errs, errors.New(errString))
}
// HasError checks if MultiError has any error.
func (m *MultiError) HasError() error {
m.mutex.Lock()
defer m.mutex.Unlock()
if len(m.errs) == 0 {
return nil
}
return m
}
// Error implements error interface.
func (m *MultiError) Error() string {
formattedError := make([]string, len(m.errs))
m.mutex.Lock()
defer m.mutex.Unlock()
for i, e := range m.errs {
formattedError[i] = e.Error()
}
return strings.Join(formattedError, ", ")
}

23
vendor/github.com/pkg/errors/LICENSE generated vendored Normal file
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Copyright (c) 2015, Dave Cheney <dave@cheney.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

282
vendor/github.com/pkg/errors/errors.go generated vendored Normal file
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// Package errors provides simple error handling primitives.
//
// The traditional error handling idiom in Go is roughly akin to
//
// if err != nil {
// return err
// }
//
// which when applied recursively up the call stack results in error reports
// without context or debugging information. The errors package allows
// programmers to add context to the failure path in their code in a way
// that does not destroy the original value of the error.
//
// Adding context to an error
//
// The errors.Wrap function returns a new error that adds context to the
// original error by recording a stack trace at the point Wrap is called,
// together with the supplied message. For example
//
// _, err := ioutil.ReadAll(r)
// if err != nil {
// return errors.Wrap(err, "read failed")
// }
//
// If additional control is required, the errors.WithStack and
// errors.WithMessage functions destructure errors.Wrap into its component
// operations: annotating an error with a stack trace and with a message,
// respectively.
//
// Retrieving the cause of an error
//
// Using errors.Wrap constructs a stack of errors, adding context to the
// preceding error. Depending on the nature of the error it may be necessary
// to reverse the operation of errors.Wrap to retrieve the original error
// for inspection. Any error value which implements this interface
//
// type causer interface {
// Cause() error
// }
//
// can be inspected by errors.Cause. errors.Cause will recursively retrieve
// the topmost error that does not implement causer, which is assumed to be
// the original cause. For example:
//
// switch err := errors.Cause(err).(type) {
// case *MyError:
// // handle specifically
// default:
// // unknown error
// }
//
// Although the causer interface is not exported by this package, it is
// considered a part of its stable public interface.
//
// Formatted printing of errors
//
// All error values returned from this package implement fmt.Formatter and can
// be formatted by the fmt package. The following verbs are supported:
//
// %s print the error. If the error has a Cause it will be
// printed recursively.
// %v see %s
// %+v extended format. Each Frame of the error's StackTrace will
// be printed in detail.
//
// Retrieving the stack trace of an error or wrapper
//
// New, Errorf, Wrap, and Wrapf record a stack trace at the point they are
// invoked. This information can be retrieved with the following interface:
//
// type stackTracer interface {
// StackTrace() errors.StackTrace
// }
//
// The returned errors.StackTrace type is defined as
//
// type StackTrace []Frame
//
// The Frame type represents a call site in the stack trace. Frame supports
// the fmt.Formatter interface that can be used for printing information about
// the stack trace of this error. For example:
//
// if err, ok := err.(stackTracer); ok {
// for _, f := range err.StackTrace() {
// fmt.Printf("%+s:%d", f)
// }
// }
//
// Although the stackTracer interface is not exported by this package, it is
// considered a part of its stable public interface.
//
// See the documentation for Frame.Format for more details.
package errors
import (
"fmt"
"io"
)
// New returns an error with the supplied message.
// New also records the stack trace at the point it was called.
func New(message string) error {
return &fundamental{
msg: message,
stack: callers(),
}
}
// Errorf formats according to a format specifier and returns the string
// as a value that satisfies error.
// Errorf also records the stack trace at the point it was called.
func Errorf(format string, args ...interface{}) error {
return &fundamental{
msg: fmt.Sprintf(format, args...),
stack: callers(),
}
}
// fundamental is an error that has a message and a stack, but no caller.
type fundamental struct {
msg string
*stack
}
func (f *fundamental) Error() string { return f.msg }
func (f *fundamental) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
io.WriteString(s, f.msg)
f.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, f.msg)
case 'q':
fmt.Fprintf(s, "%q", f.msg)
}
}
// WithStack annotates err with a stack trace at the point WithStack was called.
// If err is nil, WithStack returns nil.
func WithStack(err error) error {
if err == nil {
return nil
}
return &withStack{
err,
callers(),
}
}
type withStack struct {
error
*stack
}
func (w *withStack) Cause() error { return w.error }
func (w *withStack) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v", w.Cause())
w.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, w.Error())
case 'q':
fmt.Fprintf(s, "%q", w.Error())
}
}
// Wrap returns an error annotating err with a stack trace
// at the point Wrap is called, and the supplied message.
// If err is nil, Wrap returns nil.
func Wrap(err error, message string) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: message,
}
return &withStack{
err,
callers(),
}
}
// Wrapf returns an error annotating err with a stack trace
// at the point Wrapf is called, and the format specifier.
// If err is nil, Wrapf returns nil.
func Wrapf(err error, format string, args ...interface{}) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: fmt.Sprintf(format, args...),
}
return &withStack{
err,
callers(),
}
}
// WithMessage annotates err with a new message.
// If err is nil, WithMessage returns nil.
func WithMessage(err error, message string) error {
if err == nil {
return nil
}
return &withMessage{
cause: err,
msg: message,
}
}
// WithMessagef annotates err with the format specifier.
// If err is nil, WithMessagef returns nil.
func WithMessagef(err error, format string, args ...interface{}) error {
if err == nil {
return nil
}
return &withMessage{
cause: err,
msg: fmt.Sprintf(format, args...),
}
}
type withMessage struct {
cause error
msg string
}
func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() }
func (w *withMessage) Cause() error { return w.cause }
func (w *withMessage) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v\n", w.Cause())
io.WriteString(s, w.msg)
return
}
fallthrough
case 's', 'q':
io.WriteString(s, w.Error())
}
}
// Cause returns the underlying cause of the error, if possible.
// An error value has a cause if it implements the following
// interface:
//
// type causer interface {
// Cause() error
// }
//
// If the error does not implement Cause, the original error will
// be returned. If the error is nil, nil will be returned without further
// investigation.
func Cause(err error) error {
type causer interface {
Cause() error
}
for err != nil {
cause, ok := err.(causer)
if !ok {
break
}
err = cause.Cause()
}
return err
}

147
vendor/github.com/pkg/errors/stack.go generated vendored Normal file
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package errors
import (
"fmt"
"io"
"path"
"runtime"
"strings"
)
// Frame represents a program counter inside a stack frame.
type Frame uintptr
// pc returns the program counter for this frame;
// multiple frames may have the same PC value.
func (f Frame) pc() uintptr { return uintptr(f) - 1 }
// file returns the full path to the file that contains the
// function for this Frame's pc.
func (f Frame) file() string {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return "unknown"
}
file, _ := fn.FileLine(f.pc())
return file
}
// line returns the line number of source code of the
// function for this Frame's pc.
func (f Frame) line() int {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return 0
}
_, line := fn.FileLine(f.pc())
return line
}
// Format formats the frame according to the fmt.Formatter interface.
//
// %s source file
// %d source line
// %n function name
// %v equivalent to %s:%d
//
// Format accepts flags that alter the printing of some verbs, as follows:
//
// %+s function name and path of source file relative to the compile time
// GOPATH separated by \n\t (<funcname>\n\t<path>)
// %+v equivalent to %+s:%d
func (f Frame) Format(s fmt.State, verb rune) {
switch verb {
case 's':
switch {
case s.Flag('+'):
pc := f.pc()
fn := runtime.FuncForPC(pc)
if fn == nil {
io.WriteString(s, "unknown")
} else {
file, _ := fn.FileLine(pc)
fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
}
default:
io.WriteString(s, path.Base(f.file()))
}
case 'd':
fmt.Fprintf(s, "%d", f.line())
case 'n':
name := runtime.FuncForPC(f.pc()).Name()
io.WriteString(s, funcname(name))
case 'v':
f.Format(s, 's')
io.WriteString(s, ":")
f.Format(s, 'd')
}
}
// StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
type StackTrace []Frame
// Format formats the stack of Frames according to the fmt.Formatter interface.
//
// %s lists source files for each Frame in the stack
// %v lists the source file and line number for each Frame in the stack
//
// Format accepts flags that alter the printing of some verbs, as follows:
//
// %+v Prints filename, function, and line number for each Frame in the stack.
func (st StackTrace) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case s.Flag('+'):
for _, f := range st {
fmt.Fprintf(s, "\n%+v", f)
}
case s.Flag('#'):
fmt.Fprintf(s, "%#v", []Frame(st))
default:
fmt.Fprintf(s, "%v", []Frame(st))
}
case 's':
fmt.Fprintf(s, "%s", []Frame(st))
}
}
// stack represents a stack of program counters.
type stack []uintptr
func (s *stack) Format(st fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case st.Flag('+'):
for _, pc := range *s {
f := Frame(pc)
fmt.Fprintf(st, "\n%+v", f)
}
}
}
}
func (s *stack) StackTrace() StackTrace {
f := make([]Frame, len(*s))
for i := 0; i < len(f); i++ {
f[i] = Frame((*s)[i])
}
return f
}
func callers() *stack {
const depth = 32
var pcs [depth]uintptr
n := runtime.Callers(3, pcs[:])
var st stack = pcs[0:n]
return &st
}
// funcname removes the path prefix component of a function's name reported by func.Name().
func funcname(name string) string {
i := strings.LastIndex(name, "/")
name = name[i+1:]
i = strings.Index(name, ".")
return name[i+1:]
}