// 認可コードを使って、ID プロバイダからアクセストークンを取得する。
func (this *environment) getAccessToken(req *callbackRequest, idp idpdb.Element) (*token.Element, *idToken, error) {
keys, err := this.keyDb.Get()
if err != nil {
return nil, nil, erro.Wrap(err)
}
queries := url.Values{}
// grant_type
queries.Set(tagGrant_type, tagAuthorization_code)
// code
queries.Set(tagCode, req.code())
// redirect_uri
queries.Set(tagRedirect_uri, this.sess.RedirectUri())
// client_id
queries.Set(tagClient_id, this.sess.Ta())
// client_assertion_type
queries.Set(tagClient_assertion_type, cliAssTypeJwt_bearer)
// client_assertion
ass := jwt.New()
now := time.Now()
ass.SetHeader(tagAlg, this.sigAlg)
ass.SetClaim(tagIss, this.sess.Ta())
ass.SetClaim(tagSub, this.sess.Ta())
ass.SetClaim(tagAud, idp.TokenUri())
ass.SetClaim(tagJti, this.idGen.String(this.jtiLen))
ass.SetClaim(tagExp, now.Add(this.jtiExpIn).Unix())
ass.SetClaim(tagIat, now.Unix())
if err := ass.Sign(keys); err != nil {
return nil, nil, erro.Wrap(err)
}
buff, err := ass.Encode()
if err != nil {
return nil, nil, erro.Wrap(err)
}
queries.Set(tagClient_assertion, string(buff))
tokReq, err := http.NewRequest("POST", idp.TokenUri(), strings.NewReader(queries.Encode()))
if err != nil {
return nil, nil, erro.Wrap(err)
}
tokReq.Header.Set(tagContent_type, contTypeForm)
server.LogRequest(level.DEBUG, tokReq, this.debug, this.logPref)
resp, err := http.DefaultClient.Do(tokReq)
if err != nil {
return nil, nil, erro.Wrap(err)
}
defer resp.Body.Close()
server.LogResponse(level.DEBUG, resp, this.debug, this.logPref)
log.Info(this.logPref, "Got token response from "+idp.Id())
tokResp, err := parseTokenResponse(resp)
if err != nil {
return nil, nil, erro.Wrap(server.NewError(http.StatusForbidden, "cannot get access token", nil))
}
tok := token.New(tokResp.token(), this.idGen.String(this.tokTagLen), tokResp.expires(), idp.Id(), tokResp.scope())
log.Info(this.logPref, "Got access token "+logutil.Mosaic(tok.Id()))
if err := this.tokDb.Save(tok, time.Now().Add(this.tokDbExpIn)); err != nil {
return nil, nil, erro.Wrap(err)
}
log.Info(this.logPref, "Saved access token "+logutil.Mosaic(tok.Id()))
idTok, err := parseIdToken(tokResp.idToken())
if err != nil {
return nil, nil, erro.Wrap(server.NewError(http.StatusForbidden, erro.Unwrap(err).Error(), err))
} else if idTok.nonce() != this.sess.Nonce() {
return nil, nil, erro.Wrap(server.NewError(http.StatusForbidden, "invalid nonce", nil))
} else if err := idTok.verify(idp.Keys()); err != nil {
return nil, nil, erro.Wrap(server.NewError(http.StatusForbidden, erro.Unwrap(err).Error(), err))
} else if idTok.tokenHash() != nil {
if err := idTok.verifyTokenHash(tok.Id()); err != nil {
return nil, nil, erro.Wrap(server.NewError(http.StatusForbidden, erro.Unwrap(err).Error(), err))
}
}
log.Info(this.logPref, "ID token is OK")
return tok, idTok, nil
}
func (this *environment) serve(w http.ResponseWriter, r *http.Request) error {
req, err := parseRequest(r)
if err != nil {
return erro.Wrap(idperr.New(idperr.Invalid_request, erro.Unwrap(err).Error(), http.StatusBadRequest, err))
}
var acntTag string
tags := map[string]bool{}
var refHash string
type idpUnit struct {
idp idpdb.Element
codTok *codeToken
}
units := []*idpUnit{}
for _, rawCodTok := range req.codeTokens() {
codTok, err := parseCodeToken(rawCodTok)
if err != nil {
return erro.Wrap(idperr.New(idperr.Invalid_request, erro.Unwrap(err).Error(), http.StatusBadRequest, err))
} else if !codTok.audience()[this.selfId] {
return erro.Wrap(idperr.New(idperr.Invalid_request, "invalid audience", http.StatusBadRequest, nil))
} else if codTok.referralHash() == "" && len(req.codeTokens()) > 1 {
return erro.Wrap(idperr.New(idperr.Invalid_request, "no referral hash", http.StatusBadRequest, nil))
} else if codTok.accountTag() != "" {
if acntTag != "" {
return erro.Wrap(idperr.New(idperr.Invalid_request, "two main token", http.StatusBadRequest, nil))
}
acntTag = codTok.accountTag()
log.Debug(this.logPref, "Main account tag is "+acntTag)
if codTok.fromTa() == "" {
return erro.Wrap(idperr.New(idperr.Invalid_request, "no from-TA in main token", http.StatusBadRequest, nil))
}
log.Debug(this.logPref, "From-TA is "+codTok.fromTa())
} else if len(codTok.accountTags()) == 0 {
return erro.Wrap(idperr.New(idperr.Invalid_request, "no account tags in sub token", http.StatusBadRequest, nil))
}
for tag := range codTok.accountTags() {
if tags[tag] {
return erro.Wrap(idperr.New(idperr.Invalid_request, "tag "+tag+" overlaps", http.StatusBadRequest, nil))
}
tags[tag] = true
log.Debug(this.logPref, "Account tag is "+tag)
}
if codTok.referralHash() != "" {
if refHash == "" {
refHash = codTok.referralHash()
} else if codTok.referralHash() != refHash {
return erro.Wrap(idperr.New(idperr.Invalid_request, "invalid referral hash", http.StatusBadRequest, nil))
}
}
var idp idpdb.Element
if idp, err = this.idpDb.Get(codTok.idProvider()); err != nil {
return erro.Wrap(err)
} else if idp == nil {
return erro.Wrap(idperr.New(idperr.Invalid_request, "ID provider "+codTok.idProvider()+" is not exist", http.StatusBadRequest, nil))
}
log.Debug(this.logPref, "ID provider "+idp.Id()+" is exist")
if err := codTok.verify(idp.Keys()); err != nil {
return erro.Wrap(idperr.New(idperr.Invalid_request, erro.Unwrap(err).Error(), http.StatusBadRequest, err))
}
log.Debug(this.logPref, "Verified cooperation code")
units = append(units, &idpUnit{idp, codTok})
}
if acntTag == "" {
return erro.Wrap(idperr.New(idperr.Invalid_request, "no main account tag", http.StatusBadRequest, nil))
}
log.Debug(this.logPref, "Cooperation codes are OK")
var tok *token.Element
var mainAttrs map[string]interface{}
tagToAttrs := map[string]map[string]interface{}{}
var frTa string
for _, unit := range units {
var tToA map[string]map[string]interface{}
var fT string
if unit.codTok.accountTag() != "" {
fT, tok, tToA, err = this.getInfoFromMainIdProvider(unit.idp, unit.codTok)
if err != nil {
return erro.Wrap(err)
}
log.Debug(this.logPref, "Got account info from main ID provider "+unit.idp.Id())
} else {
fT, tToA, err = this.getInfoFromSubIdProvider(unit.idp, unit.codTok)
if err != nil {
return erro.Wrap(err)
}
log.Debug(this.logPref, "Got account info from sub ID provider "+unit.idp.Id())
}
for tag, attrs := range tToA {
if tag == acntTag {
attrs[tagIss] = unit.idp.Id()
attrs[tagAt_tag] = tok.Tag()
attrs[tagAt_exp] = tok.Expires().Unix()
mainAttrs = attrs
} else {
attrs[tagIss] = unit.idp.Id()
tagToAttrs[tag] = attrs
}
}
if frTa == "" {
frTa = fT
} else if frTa != fT {
return erro.Wrap(idperr.New(idperr.Invalid_request, "two from-TA ID", http.StatusBadRequest, nil))
}
}
log.Debug(this.logPref, "Got all account info")
jt := jwt.New()
jt.SetHeader(tagAlg, tagNone)
for k, v := range mainAttrs {
jt.SetClaim(k, v)
}
mainInfo, err := jt.Encode()
if err != nil {
return erro.Wrap(err)
}
var relInfo []byte
sessFlag := true
if len(tagToAttrs) > 0 {
jt = jwt.New()
jt.SetHeader(tagAlg, tagNone)
for acntTag, attrs := range tagToAttrs {
jt.SetClaim(acntTag, attrs)
if sessFlag {
for k := range attrs {
if !sessionEnable(k) {
sessFlag = false
}
}
}
}
relInfo, err = jt.Encode()
if err != nil {
return erro.Wrap(err)
}
}
w.Header().Set(tagX_auth_user, string(mainInfo))
w.Header().Set(tagX_auth_user_tag, acntTag)
w.Header().Set(tagX_auth_from_id, frTa)
if relInfo != nil {
w.Header().Set(tagX_auth_users, string(relInfo))
}
if sessFlag {
sessId := this.idGen.String(this.sessLen)
http.SetCookie(w, this.handler.newCookie(sessId, tok.Expires()))
log.Debug(this.logPref, "Report session "+logutil.Mosaic(sessId))
}
return nil
}
func (this *environment) getInfo(isMain bool, idp idpdb.Element, codTok *codeToken) (frTa string, tok *token.Element, tagToAttrs map[string]map[string]interface{}, err error) {
params := map[string]interface{}{}
// grant_type
params[tagGrant_type] = tagCooperation_code
// code
params[tagCode] = codTok.code()
// claims
if isMain {
// TODO 受け取り方を考えないと。
}
// user_claims
// TODO 受け取り方を考えないと。
// client_assertion_type
params[tagClient_assertion_type] = cliAssTypeJwt_bearer
// client_assertion
keys, err := this.keyDb.Get()
if err != nil {
return "", nil, nil, erro.Wrap(err)
}
ass, err := makeAssertion(this.handler, keys, idp.CoopToUri())
if err != nil {
return "", nil, nil, erro.Wrap(err)
}
params[tagClient_assertion] = string(ass)
data, err := json.Marshal(params)
if err != nil {
return "", nil, nil, erro.Wrap(err)
}
r, err := http.NewRequest("POST", idp.CoopToUri(), bytes.NewReader(data))
r.Header.Set(tagContent_type, contTypeJson)
log.Debug(this.logPref, "Made main cooperation-to request")
server.LogRequest(level.DEBUG, r, this.debug, this.logPref)
resp, err := this.conn.Do(r)
if err != nil {
return "", nil, nil, erro.Wrap(err)
}
defer resp.Body.Close()
server.LogResponse(level.DEBUG, resp, this.debug, this.logPref)
if resp.StatusCode != http.StatusOK {
var buff struct {
Error string
Error_description string
}
if err := json.NewDecoder(resp.Body).Decode(&buff); err != nil {
return "", nil, nil, erro.Wrap(err)
}
return "", nil, nil, erro.Wrap(idperr.New(buff.Error, buff.Error_description, resp.StatusCode, nil))
}
coopResp, err := parseCoopResponse(resp)
if err != nil {
return "", nil, nil, erro.Wrap(idperr.New(idperr.Access_denied, erro.Unwrap(err).Error(), http.StatusForbidden, err))
}
idsTok, err := parseIdsToken(coopResp.idsToken())
if err != nil {
return "", nil, nil, erro.Wrap(idperr.New(idperr.Access_denied, erro.Unwrap(err).Error(), http.StatusForbidden, err))
} else if err := idsTok.verify(idp.Keys()); err != nil {
return "", nil, nil, erro.Wrap(idperr.New(idperr.Access_denied, erro.Unwrap(err).Error(), http.StatusForbidden, err))
}
tagToAttrs = map[string]map[string]interface{}{}
for acntTag := range codTok.accountTags() {
attrs := idsTok.attributes()[acntTag]
if attrs == nil {
return "", nil, nil, erro.Wrap(idperr.New(idperr.Access_denied, "cannot get sub account tagged by "+acntTag, http.StatusForbidden, nil))
}
tagToAttrs[acntTag] = attrs
}
if isMain {
attrs := idsTok.attributes()[codTok.accountTag()]
if attrs == nil {
return "", nil, nil, erro.Wrap(idperr.New(idperr.Access_denied, "cannot get main account tagged by "+codTok.accountTag(), http.StatusForbidden, nil))
}
tagToAttrs[codTok.accountTag()] = attrs
if coopResp.token() == "" {
return "", nil, nil, erro.Wrap(idperr.New(idperr.Access_denied, "cannot get token", http.StatusForbidden, nil))
}
now := time.Now()
tok = token.New(coopResp.token(), this.idGen.String(this.tokTagLen), now.Add(coopResp.expiresIn()), idsTok.idProvider(), coopResp.scope())
log.Info(this.logPref, "Got access token "+logutil.Mosaic(tok.Id()))
if err := this.tokDb.Save(tok, now.Add(this.tokDbExpIn)); err != nil {
return "", nil, nil, erro.Wrap(err)
}
log.Info(this.logPref, "Saved access token "+logutil.Mosaic(tok.Id()))
}
return idsTok.fromTa(), tok, tagToAttrs, nil
}
func (this *environment) authServe(w http.ResponseWriter, r *http.Request) error {
req, err := parseAuthRequest(r)
if err != nil {
return erro.Wrap(server.NewError(http.StatusBadRequest, erro.Unwrap(err).Error(), err))
}
log.Debug(this.logPref, "Parsed authentication request")
authUri := req.authUri()
queries := authUri.Query()
// response_type
var idp string
respType := map[string]bool{tagCode: true}
rawAuthUri := authUri.Scheme + "://" + authUri.Host + authUri.Path
if idps, err := this.idpDb.Search(map[string]string{
tagAuthorization_endpoint: "^" + rawAuthUri + "$",
}); err != nil {
return erro.Wrap(err)
} else if len(idps) == 1 {
idp = idps[0].Id()
log.Debug(this.logPref, "Destination is in ID provider "+idp)
} else {
// ID プロバイダ選択サービスか何か。
respType[tagId_token] = true
log.Debug(this.logPref, "Destination "+rawAuthUri+" is not ID provider")
}
queries.Set(tagResponse_type, request.ValueSetForm(respType))
// scope
if scop := request.FormValueSet(queries.Get(tagScope)); !scop[tagOpenid] {
scop[tagOpenid] = true
queries.Set(tagScope, request.ValueSetForm(scop))
log.Debug(this.logPref, `Added scope "`+tagOpenid+`"`)
}
// client_id
ta := queries.Get(tagClient_id)
if ta == "" {
ta = this.selfId
queries.Set(tagClient_id, ta)
log.Debug(this.logPref, "Act as default TA "+ta)
} else {
log.Debug(this.logPref, "Act as TA "+ta)
}
// redirect_uri
rediUri := queries.Get(tagRedirect_uri)
if rediUri == "" {
rediUri = this.rediUri
queries.Set(tagRedirect_uri, rediUri)
log.Debug(this.logPref, "Use default redirect uri "+rediUri)
} else {
log.Debug(this.logPref, "Use redirect uri "+rediUri)
}
// state
stat := this.idGen.String(this.statLen)
queries.Set(tagState, stat)
log.Debug(this.logPref, "Use state "+logutil.Mosaic(stat))
// nonce
nonc := this.idGen.String(this.noncLen)
queries.Set(tagNonce, nonc)
log.Debug(this.logPref, "Use nonce "+logutil.Mosaic(nonc))
authUri.RawQuery = queries.Encode()
sess := asession.New(
this.idGen.String(this.sessLen),
time.Now().Add(this.sessExpIn),
req.path(),
idp,
ta,
rediUri,
stat,
nonc,
)
if err := this.sessDb.Save(sess, sess.Expires().Add(this.sessDbExpIn-this.sessExpIn)); err != nil {
return erro.Wrap(err)
}
log.Info(this.logPref, "Generated user session "+logutil.Mosaic(sess.Id()))
http.SetCookie(w, this.newCookie(sess.Id(), sess.Expires()))
w.Header().Add(tagCache_control, tagNo_store)
w.Header().Add(tagPragma, tagNo_cache)
uri := authUri.String()
http.Redirect(w, r, uri, http.StatusFound)
log.Info(this.logPref, "Redirect to "+uri)
return nil
}