mirror of
https://github.com/miniflux/v2.git
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202 lines
6.1 KiB
Go
202 lines
6.1 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package googlereader // import "miniflux.app/v2/internal/googlereader"
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import (
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"context"
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"crypto/hmac"
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"crypto/sha1"
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"encoding/hex"
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"log/slog"
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"net/http"
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"strings"
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"miniflux.app/v2/internal/http/request"
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"miniflux.app/v2/internal/model"
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"miniflux.app/v2/internal/storage"
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)
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type middleware struct {
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store *storage.Storage
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}
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func newMiddleware(s *storage.Storage) *middleware {
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return &middleware{s}
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}
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func (m *middleware) handleCORS(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Access-Control-Allow-Origin", "*")
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w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
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w.Header().Set("Access-Control-Allow-Headers", "Authorization")
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if r.Method == http.MethodOptions {
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w.WriteHeader(http.StatusOK)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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func (m *middleware) apiKeyAuth(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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clientIP := request.ClientIP(r)
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var token string
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if r.Method == http.MethodPost {
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if err := r.ParseForm(); err != nil {
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slog.Warn("[GoogleReader] Could not parse request form data",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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slog.Any("error", err),
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)
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Unauthorized(w, r)
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return
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}
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token = r.Form.Get("T")
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if token == "" {
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slog.Warn("[GoogleReader] Post-Form T field is empty",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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} else {
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authorization := r.Header.Get("Authorization")
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if authorization == "" {
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slog.Warn("[GoogleReader] No token provided",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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fields := strings.Fields(authorization)
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if len(fields) != 2 {
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slog.Warn("[GoogleReader] Authorization header does not have the expected GoogleLogin format auth=xxxxxx",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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if fields[0] != "GoogleLogin" {
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slog.Warn("[GoogleReader] Authorization header does not begin with GoogleLogin",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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auths := strings.Split(fields[1], "=")
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if len(auths) != 2 {
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slog.Warn("[GoogleReader] Authorization header does not have the expected GoogleLogin format auth=xxxxxx",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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if auths[0] != "auth" {
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slog.Warn("[GoogleReader] Authorization header does not have the expected GoogleLogin format auth=xxxxxx",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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token = auths[1]
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}
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parts := strings.Split(token, "/")
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if len(parts) != 2 {
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slog.Warn("[GoogleReader] Auth token does not have the expected structure username/hash",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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slog.String("token", token),
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)
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Unauthorized(w, r)
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return
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}
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var integration *model.Integration
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var user *model.User
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var err error
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if integration, err = m.store.GoogleReaderUserGetIntegration(parts[0]); err != nil {
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slog.Warn("[GoogleReader] No user found with the given Google Reader username",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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slog.Any("error", err),
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)
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Unauthorized(w, r)
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return
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}
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expectedToken := getAuthToken(integration.GoogleReaderUsername, integration.GoogleReaderPassword)
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if expectedToken != token {
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slog.Warn("[GoogleReader] Token does not match",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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if user, err = m.store.UserByID(integration.UserID); err != nil {
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slog.Error("[GoogleReader] Unable to fetch user from database",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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slog.Any("error", err),
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)
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Unauthorized(w, r)
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return
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}
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if user == nil {
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slog.Warn("[GoogleReader] No user found with the given Google Reader credentials",
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slog.Bool("authentication_failed", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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)
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Unauthorized(w, r)
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return
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}
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slog.Info("[GoogleReader] User authenticated successfully",
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slog.Bool("authentication_successful", true),
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slog.String("client_ip", clientIP),
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slog.String("user_agent", r.UserAgent()),
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slog.Int64("user_id", user.ID),
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slog.String("username", user.Username),
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)
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m.store.SetLastLogin(integration.UserID)
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ctx := r.Context()
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ctx = context.WithValue(ctx, request.UserIDContextKey, user.ID)
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ctx = context.WithValue(ctx, request.UserTimezoneContextKey, user.Timezone)
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ctx = context.WithValue(ctx, request.IsAdminUserContextKey, user.IsAdmin)
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ctx = context.WithValue(ctx, request.IsAuthenticatedContextKey, true)
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ctx = context.WithValue(ctx, request.GoogleReaderToken, token)
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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func getAuthToken(username, password string) string {
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token := hex.EncodeToString(hmac.New(sha1.New, []byte(username+password)).Sum(nil))
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token = username + "/" + token
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return token
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}
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