108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
package http
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import (
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"encoding/json"
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"net/http"
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"strings"
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"github.com/lestrrat-go/jwx/v2/jwa"
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"source.toby3d.me/toby3d/auth/internal/common"
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"source.toby3d.me/toby3d/auth/internal/domain"
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"source.toby3d.me/toby3d/auth/internal/middleware"
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"source.toby3d.me/toby3d/auth/internal/token"
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)
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type (
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UserInformationResponse struct {
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Name string `json:"name,omitempty"`
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URL string `json:"url,omitempty"`
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Photo string `json:"photo,omitempty"`
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Email string `json:"email,omitempty"`
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}
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Handler struct {
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config *domain.Config
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tokens token.UseCase
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}
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)
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func NewHandler(tokens token.UseCase, config *domain.Config) *Handler {
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return &Handler{
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tokens: tokens,
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config: config,
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}
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}
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func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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chain := middleware.Chain{
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//nolint:exhaustivestruct
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middleware.JWTWithConfig(middleware.JWTConfig{
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AuthScheme: "Bearer",
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ContextKey: "token",
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SigningKey: []byte(h.config.JWT.Secret),
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SigningMethod: jwa.SignatureAlgorithm(h.config.JWT.Algorithm),
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Skipper: middleware.DefaultSkipper,
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TokenLookup: "header:" + common.HeaderAuthorization + ":Bearer ",
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}),
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middleware.LogFmt(),
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}
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chain.Handler(h.handleFunc).ServeHTTP(w, r)
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}
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func (h *Handler) handleFunc(w http.ResponseWriter, r *http.Request) {
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w.Header().Set(common.HeaderContentType, common.MIMEApplicationJSONCharsetUTF8)
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encoder := json.NewEncoder(w)
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tkn, userInfo, err := h.tokens.Verify(r.Context(),
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strings.TrimPrefix(r.Header.Get(common.HeaderAuthorization), "Bearer "))
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if err != nil || tkn == nil {
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// WARN(toby3d): If the token is not valid, the endpoint still
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// MUST return a 200 Response.
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_ = encoder.Encode(err) //nolint:errchkjson
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w.WriteHeader(http.StatusOK)
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return
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}
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if !tkn.Scope.Has(domain.ScopeProfile) {
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//nolint:errchkjson
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_ = encoder.Encode(domain.NewError(
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domain.ErrorCodeInsufficientScope,
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"token with 'profile' scope is required to view profile data",
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"https://indieauth.net/source/#user-information",
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))
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w.WriteHeader(http.StatusForbidden)
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return
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}
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resp := new(UserInformationResponse)
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if userInfo == nil {
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_ = encoder.Encode(resp) //nolint:errchkjson
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return
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}
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if userInfo.HasName() {
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resp.Name = userInfo.GetName()
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}
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if userInfo.HasURL() {
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resp.URL = userInfo.GetURL().String()
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}
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if userInfo.HasPhoto() {
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resp.Photo = userInfo.GetPhoto().String()
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}
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if tkn.Scope.Has(domain.ScopeEmail) && userInfo.HasEmail() {
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resp.Email = userInfo.GetEmail().String()
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}
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_ = encoder.Encode(resp) //nolint:errchkjson
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w.WriteHeader(http.StatusOK)
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}
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