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// Package origin is a client for parts of the Origin API used by Northstar for
// authentication.
package origin
import (
"context"
"encoding/xml"
"errors"
"fmt"
"io"
"mime"
"net/http"
"strconv"
"strings"
)
var (
ErrInvalidResponse = errors.New("invalid origin api response")
ErrOrigin = errors.New("origin api error")
ErrAuthRequired = errors.New("origin authentication required")
)
// Base is the base path for the Origin API.
var Base = "https://api1.origin.com"
// UserInfo contains information about an Origin account.
type UserInfo struct {
UserID uint64
PersonaID string
EAID string
}
// GetUserInfo gets information about Origin accounts by their Origin UserID.
//
// If errors.Is(err, ErrAuthRequired), you need a new NucleusToken.
func GetUserInfo(ctx context.Context, token NucleusToken, uid ...uint64) ([]UserInfo, error) {
uids := make([]string, len(uid))
for _, x := range uid {
uids = append(uids, strconv.FormatUint(x, 10))
}
req, err := http.NewRequestWithContext(ctx, http.MethodGet, Base+"/atom/users?userIds="+strings.Join(uids, ","), nil)
if err != nil {
return nil, err
}
req.Header.Set("AuthToken", string(token))
req.Header.Set("X-Origin-Platform", "UnknownOS")
req.Header.Set("Referrer", "https://www.origin.com/")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
buf, root, err := checkResponseXML(resp)
if err != nil {
return nil, err
}
return parseUserInfo(buf, root)
}
func checkResponseXML(resp *http.Response) ([]byte, xml.Name, error) {
var root xml.Name
buf, err := io.ReadAll(resp.Body)
if err != nil {
return buf, root, err
}
if mt, _, _ := mime.ParseMediaType(resp.Header.Get("Content-Type")); mt != "application/xml" && mt != "text/xml" {
if resp.StatusCode != http.StatusOK {
return buf, root, fmt.Errorf("%w: response status %d (%s)", ErrOrigin, resp.StatusCode, resp.Status)
}
return buf, root, fmt.Errorf("%w: expected xml, got %q", ErrOrigin, mt)
}
if err := xml.Unmarshal(buf, &root); err != nil {
return buf, root, fmt.Errorf("%w: invalid xml: %v", ErrInvalidResponse, err)
}
if root.Local == "error" {
var obj struct {
Code int `xml:"code,attr"`
Failure []struct {
Field string `xml:"field,attr"`
Cause string `xml:"cause,attr"`
Value string `xml:"value,attr"`
} `xml:"failure"`
}
if err := xml.Unmarshal(buf, &obj); err != nil {
return buf, root, fmt.Errorf("%w: response %#q (unmarshal: %v)", ErrOrigin, string(buf), err)
}
for _, f := range obj.Failure {
if f.Cause == "invalid_token" {
return buf, root, fmt.Errorf("%w: invalid token", ErrAuthRequired)
}
}
if len(obj.Failure) == 1 {
return buf, root, fmt.Errorf("%w: error %d: %s (%s) %q", ErrOrigin, obj.Code, obj.Failure[0].Cause, obj.Failure[0].Field, obj.Failure[0].Value)
}
return buf, root, fmt.Errorf("%w: error %d: response %#q", ErrOrigin, obj.Code, string(buf))
}
return buf, root, nil
}
func parseUserInfo(buf []byte, root xml.Name) ([]UserInfo, error) {
var obj struct {
User []struct {
UserID string `xml:"userId"`
PersonaID string `xml:"personaId"`
EAID string `xml:"EAID"`
} `xml:"user"`
}
if root.Local != "users" {
return nil, fmt.Errorf("%w: unexpected %s response", ErrInvalidResponse, root.Local)
}
if err := xml.Unmarshal(buf, &obj); err != nil {
return nil, fmt.Errorf("%w: invalid xml: %v", ErrInvalidResponse, err)
}
res := make([]UserInfo, len(obj.User))
for i, x := range obj.User {
var v UserInfo
if uid, err := strconv.ParseUint(x.UserID, 10, 64); err == nil {
v.UserID = uid
} else {
return nil, fmt.Errorf("parse userId %q: %w", x.UserID, err)
}
v.PersonaID = x.PersonaID
v.EAID = x.EAID
res[i] = v
}
return res, nil
}
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