mlogclub
333 lines
8.8 KiB
Go
333 lines
8.8 KiB
Go
package oidcclient
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import (
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"agent-desk/internal/pkg/config"
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"agent-desk/internal/pkg/dto/response"
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"agent-desk/internal/pkg/errorsx"
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"agent-desk/internal/pkg/i18nx"
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"context"
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"crypto/hmac"
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"encoding/hex"
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"encoding/json"
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"strings"
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"sync"
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"time"
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gooidc "github.com/coreos/go-oidc/v3/oidc"
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"golang.org/x/oauth2"
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)
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const (
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StateTTL = 5 * time.Minute
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LoginTicketTTL = 1 * time.Minute
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defaultLoginNextPath = "/dashboard"
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)
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var (
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oidcCfg config.OIDCConfig
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provider *gooidc.Provider
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oauthConfig *oauth2.Config
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idTokenVerifier *gooidc.IDTokenVerifier
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loginTicketStore sync.Map
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)
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type Profile struct {
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Subject string `json:"sub"`
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Email string `json:"email,omitempty"`
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PreferredUsername string `json:"preferred_username,omitempty"`
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Name string `json:"name,omitempty"`
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Picture string `json:"picture,omitempty"`
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RawProfile string `json:"-"`
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}
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type statePayload struct {
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Next string `json:"next"`
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Nonce string `json:"nonce"`
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ExpiredAt int64 `json:"expiredAt"`
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}
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type loginTicket struct {
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Response *response.LoginResponse
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ExpiredAt time.Time
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}
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func Init(ctx context.Context) error {
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provider = nil
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oauthConfig = nil
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idTokenVerifier = nil
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oidcCfg = config.OIDCConfig{}
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cfg := config.Current().OIDC
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if !cfg.Enabled {
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return nil
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}
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oidcCfg = cfg
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if strings.TrimSpace(cfg.Issuer) == "" {
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return i18nx.Errorf("error.e0039")
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}
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if strings.TrimSpace(cfg.ClientID) == "" {
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return i18nx.Errorf("error.e0036")
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}
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if strings.TrimSpace(cfg.ClientSecret) == "" {
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return i18nx.Errorf("error.e0037")
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}
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if strings.TrimSpace(cfg.RedirectURL) == "" {
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return i18nx.Errorf("error.e0040")
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}
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p, err := gooidc.NewProvider(ctx, strings.TrimSpace(cfg.Issuer))
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if err != nil {
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return err
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}
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scopes := cfg.Scopes
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if len(scopes) == 0 {
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scopes = []string{gooidc.ScopeOpenID, "profile", "email"}
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}
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provider = p
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oauthConfig = &oauth2.Config{
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ClientID: strings.TrimSpace(cfg.ClientID),
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ClientSecret: strings.TrimSpace(cfg.ClientSecret),
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Endpoint: p.Endpoint(),
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RedirectURL: strings.TrimSpace(cfg.RedirectURL),
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Scopes: scopes,
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}
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idTokenVerifier = p.Verifier(&gooidc.Config{ClientID: strings.TrimSpace(cfg.ClientID)})
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return nil
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}
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func Enabled() bool {
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return oidcCfg.Enabled && provider != nil && oauthConfig != nil && idTokenVerifier != nil
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}
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func BuildAuthCodeURL(next string) (string, error) {
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if !Enabled() {
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return "", errorsx.BusinessErrorI18n(1, "error.oidc.loginDisabled")
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}
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state, err := CreateState(next)
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if err != nil {
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return "", err
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}
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return oauthConfig.AuthCodeURL(state), nil
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}
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func ExchangeCode(ctx context.Context, code string) (*Profile, error) {
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if !Enabled() {
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return nil, errorsx.BusinessErrorI18n(1, "error.oidc.loginDisabled")
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}
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code = strings.TrimSpace(code)
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if code == "" {
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return nil, errorsx.InvalidParamI18n("error.e0041")
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}
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token, err := oauthConfig.Exchange(ctx, code)
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if err != nil {
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return nil, err
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}
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rawIDToken, ok := token.Extra("id_token").(string)
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if !ok || strings.TrimSpace(rawIDToken) == "" {
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return nil, errorsx.UnauthorizedI18n("error.e0038")
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}
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idToken, err := idTokenVerifier.Verify(ctx, rawIDToken)
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if err != nil {
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return nil, err
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}
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profile, err := profileFromIDToken(idToken)
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if err != nil {
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return nil, err
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}
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userInfo, err := provider.UserInfo(ctx, oauth2.StaticTokenSource(token))
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if err == nil && userInfo != nil && strings.TrimSpace(userInfo.Subject) == profile.Subject {
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if mergedProfile, mergeErr := profileFromUserInfo(userInfo, profile); mergeErr == nil {
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profile = mergedProfile
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}
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}
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return profile, nil
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}
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func CreateState(next string) (string, error) {
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secret := stateSecret()
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if secret == "" {
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return "", errorsx.BusinessErrorI18n(2, "error.oidc.stateSecretMissing")
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}
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nonce, err := randomToken("os_")
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if err != nil {
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return "", err
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}
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payload := statePayload{
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Next: sanitizeNextPath(next),
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Nonce: nonce,
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ExpiredAt: time.Now().Add(StateTTL).Unix(),
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}
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body, err := json.Marshal(payload)
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if err != nil {
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return "", err
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}
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encoded := base64.RawURLEncoding.EncodeToString(body)
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return encoded + "." + signState(encoded, secret), nil
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}
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func ParseState(state string) (string, error) {
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secret := stateSecret()
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if secret == "" {
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return "", errorsx.UnauthorizedI18n("error.e0046")
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}
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parts := strings.Split(strings.TrimSpace(state), ".")
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if len(parts) != 2 {
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return "", errorsx.UnauthorizedI18n("error.e0046")
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}
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if !hmac.Equal([]byte(parts[1]), []byte(signState(parts[0], secret))) {
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return "", errorsx.UnauthorizedI18n("error.e0046")
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}
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body, err := base64.RawURLEncoding.DecodeString(parts[0])
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if err != nil {
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return "", errorsx.UnauthorizedI18n("error.e0046")
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}
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payload := statePayload{}
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if err = json.Unmarshal(body, &payload); err != nil {
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return "", errorsx.UnauthorizedI18n("error.e0046")
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}
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if payload.ExpiredAt <= time.Now().Unix() {
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return "", errorsx.UnauthorizedI18n("error.e0046")
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}
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return sanitizeNextPath(payload.Next), nil
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}
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func IssueLoginTicket(loginResp *response.LoginResponse) (string, error) {
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if loginResp == nil {
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return "", i18nx.Errorf("error.e0272")
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}
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ticket, err := randomToken("olt_")
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if err != nil {
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return "", err
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}
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cleanupExpiredLoginTickets()
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loginTicketStore.Store(ticket, loginTicket{
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Response: loginResp,
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ExpiredAt: time.Now().Add(LoginTicketTTL),
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})
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return ticket, nil
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}
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func ConsumeLoginTicket(ticket string) (*response.LoginResponse, error) {
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ticket = strings.TrimSpace(ticket)
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if ticket == "" {
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return nil, errorsx.InvalidParamI18n("error.e0072")
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}
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value, ok := loginTicketStore.LoadAndDelete(ticket)
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if !ok {
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return nil, errorsx.UnauthorizedI18n("error.e0271")
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}
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record, ok := value.(loginTicket)
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if !ok || record.Response == nil || time.Now().After(record.ExpiredAt) {
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return nil, errorsx.UnauthorizedI18n("error.e0271")
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}
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return record.Response, nil
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}
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func profileFromIDToken(idToken *gooidc.IDToken) (*Profile, error) {
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var claims map[string]any
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if err := idToken.Claims(&claims); err != nil {
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return nil, err
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}
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raw, _ := json.Marshal(claims)
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profile := &Profile{
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Subject: claimString(claims, "sub"),
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Email: claimString(claims, "email"),
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PreferredUsername: claimString(claims, "preferred_username"),
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Name: claimString(claims, "name"),
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Picture: claimString(claims, "picture"),
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RawProfile: string(raw),
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}
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if strings.TrimSpace(profile.Subject) == "" {
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return nil, errorsx.UnauthorizedI18n("error.e0043")
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}
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return profile, nil
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}
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func profileFromUserInfo(userInfo *gooidc.UserInfo, fallback *Profile) (*Profile, error) {
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var claims map[string]any
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if err := userInfo.Claims(&claims); err != nil {
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return nil, err
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}
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raw, _ := json.Marshal(claims)
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profile := &Profile{
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Subject: strings.TrimSpace(userInfo.Subject),
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Email: claimString(claims, "email"),
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PreferredUsername: claimString(claims, "preferred_username"),
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Name: claimString(claims, "name"),
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Picture: claimString(claims, "picture"),
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RawProfile: string(raw),
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}
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if fallback != nil {
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profile.Email = firstNonEmpty(profile.Email, fallback.Email)
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profile.PreferredUsername = firstNonEmpty(profile.PreferredUsername, fallback.PreferredUsername)
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profile.Name = firstNonEmpty(profile.Name, fallback.Name)
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profile.Picture = firstNonEmpty(profile.Picture, fallback.Picture)
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}
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if profile.RawProfile == "" {
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if fallback != nil {
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profile.RawProfile = fallback.RawProfile
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}
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}
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if strings.TrimSpace(profile.Subject) == "" {
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return nil, errorsx.UnauthorizedI18n("error.e0043")
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}
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return profile, nil
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}
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func firstNonEmpty(values ...string) string {
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for _, value := range values {
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if value = strings.TrimSpace(value); value != "" {
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return value
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}
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}
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return ""
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}
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func claimString(claims map[string]any, key string) string {
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value, _ := claims[key].(string)
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return strings.TrimSpace(value)
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}
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func stateSecret() string {
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if strings.TrimSpace(oidcCfg.StateSecret) != "" {
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return strings.TrimSpace(oidcCfg.StateSecret)
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}
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return strings.TrimSpace(oidcCfg.ClientSecret)
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}
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func signState(content, secret string) string {
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mac := hmac.New(sha256.New, []byte(secret))
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_, _ = mac.Write([]byte(content))
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return hex.EncodeToString(mac.Sum(nil))
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}
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func cleanupExpiredLoginTickets() {
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now := time.Now()
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loginTicketStore.Range(func(key, value any) bool {
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record, ok := value.(loginTicket)
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if !ok || now.After(record.ExpiredAt) {
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loginTicketStore.Delete(key)
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}
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return true
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})
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}
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func sanitizeNextPath(next string) string {
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next = strings.TrimSpace(next)
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if next == "" || !strings.HasPrefix(next, "/") || strings.HasPrefix(next, "//") {
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return defaultLoginNextPath
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}
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return next
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}
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func randomToken(prefix string) (string, error) {
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buf := make([]byte, 24)
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if _, err := rand.Read(buf); err != nil {
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return "", err
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}
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return prefix + hex.EncodeToString(buf), nil
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}
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