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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package googlereader // import "miniflux.app/v2/internal/googlereader"
import (
"context"
"crypto/hmac"
"crypto/sha1"
"encoding/hex"
"net/http"
"strings"
"miniflux.app/v2/internal/http/request"
"miniflux.app/v2/internal/http/response"
"miniflux.app/v2/internal/http/response/json"
"miniflux.app/v2/internal/logger"
"miniflux.app/v2/internal/model"
"miniflux.app/v2/internal/storage"
)
type middleware struct {
store *storage.Storage
}
func newMiddleware(s *storage.Storage) *middleware {
return &middleware{s}
}
func (m *middleware) clientLogin(w http.ResponseWriter, r *http.Request) {
clientIP := request.ClientIP(r)
var username, password, output string
var integration *model.Integration
err := r.ParseForm()
if err != nil {
logger.Error("[GoogleReader][Login] [ClientIP=%s] Could not parse form", clientIP)
json.Unauthorized(w, r)
return
}
username = r.Form.Get("Email")
password = r.Form.Get("Passwd")
output = r.Form.Get("output")
if username == "" || password == "" {
logger.Error("[GoogleReader][Login] [ClientIP=%s] Empty username or password", clientIP)
json.Unauthorized(w, r)
return
}
if err = m.store.GoogleReaderUserCheckPassword(username, password); err != nil {
logger.Error("[GoogleReader][Login] [ClientIP=%s] Invalid username or password: %s", clientIP, username)
json.Unauthorized(w, r)
return
}
logger.Info("[GoogleReader][Login] [ClientIP=%s] User authenticated: %s", clientIP, username)
if integration, err = m.store.GoogleReaderUserGetIntegration(username); err != nil {
logger.Error("[GoogleReader][Login] [ClientIP=%s] Could not load integration: %s", clientIP, username)
json.Unauthorized(w, r)
return
}
m.store.SetLastLogin(integration.UserID)
token := getAuthToken(integration.GoogleReaderUsername, integration.GoogleReaderPassword)
logger.Info("[GoogleReader][Login] [ClientIP=%s] Created token: %s", clientIP, token)
result := login{SID: token, LSID: token, Auth: token}
if output == "json" {
json.OK(w, r, result)
return
}
builder := response.New(w, r)
builder.WithHeader("Content-Type", "text/plain; charset=UTF-8")
builder.WithBody(result.String())
builder.Write()
}
func (m *middleware) token(w http.ResponseWriter, r *http.Request) {
clientIP := request.ClientIP(r)
if !request.IsAuthenticated(r) {
logger.Error("[GoogleReader][Token] [ClientIP=%s] User is not authenticated", clientIP)
json.Unauthorized(w, r)
return
}
token := request.GoolgeReaderToken(r)
if token == "" {
logger.Error("[GoogleReader][Token] [ClientIP=%s] User does not have token: %s", clientIP, request.UserID(r))
json.Unauthorized(w, r)
return
}
logger.Info("[GoogleReader][Token] [ClientIP=%s] token: %s", clientIP, token)
w.Header().Add("Content-Type", "text/plain; charset=UTF-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(token))
}
func (m *middleware) handleCORS(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
w.Header().Set("Access-Control-Allow-Headers", "Authorization")
if r.Method == http.MethodOptions {
w.WriteHeader(http.StatusOK)
return
}
next.ServeHTTP(w, r)
})
}
func (m *middleware) apiKeyAuth(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
clientIP := request.ClientIP(r)
var token string
if r.Method == http.MethodPost {
err := r.ParseForm()
if err != nil {
logger.Error("[GoogleReader][Login] [ClientIP=%s] Could not parse form", clientIP)
Unauthorized(w, r)
return
}
token = r.Form.Get("T")
if token == "" {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Post-Form T field is empty", clientIP)
Unauthorized(w, r)
return
}
} else {
authorization := r.Header.Get("Authorization")
if authorization == "" {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] No token provided", clientIP)
Unauthorized(w, r)
return
}
fields := strings.Fields(authorization)
if len(fields) != 2 {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Authorization header does not have the expected structure GoogleLogin auth=xxxxxx - '%s'", clientIP, authorization)
Unauthorized(w, r)
return
}
if fields[0] != "GoogleLogin" {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Authorization header does not begin with GoogleLogin - '%s'", clientIP, authorization)
Unauthorized(w, r)
return
}
auths := strings.Split(fields[1], "=")
if len(auths) != 2 {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Authorization header does not have the expected structure GoogleLogin auth=xxxxxx - '%s'", clientIP, authorization)
Unauthorized(w, r)
return
}
if auths[0] != "auth" {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Authorization header does not have the expected structure GoogleLogin auth=xxxxxx - '%s'", clientIP, authorization)
Unauthorized(w, r)
return
}
token = auths[1]
}
parts := strings.Split(token, "/")
if len(parts) != 2 {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Auth token does not have the expected structure username/hash - '%s'", clientIP, token)
Unauthorized(w, r)
return
}
var integration *model.Integration
var user *model.User
var err error
if integration, err = m.store.GoogleReaderUserGetIntegration(parts[0]); err != nil {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] token: %s", clientIP, token)
logger.Error("[GoogleReader][Auth] [ClientIP=%s] No user found with the given google reader username: %s", clientIP, parts[0])
Unauthorized(w, r)
return
}
expectedToken := getAuthToken(integration.GoogleReaderUsername, integration.GoogleReaderPassword)
if expectedToken != token {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] Token does not match: %s", clientIP, token)
Unauthorized(w, r)
return
}
if user, err = m.store.UserByID(integration.UserID); err != nil {
logger.Error("[GoogleReader][Auth] [ClientIP=%s] No user found with the userID: %d", clientIP, integration.UserID)
Unauthorized(w, r)
return
}
m.store.SetLastLogin(integration.UserID)
ctx := r.Context()
ctx = context.WithValue(ctx, request.UserIDContextKey, user.ID)
ctx = context.WithValue(ctx, request.UserTimezoneContextKey, user.Timezone)
ctx = context.WithValue(ctx, request.IsAdminUserContextKey, user.IsAdmin)
ctx = context.WithValue(ctx, request.IsAuthenticatedContextKey, true)
ctx = context.WithValue(ctx, request.GoogleReaderToken, token)
next.ServeHTTP(w, r.WithContext(ctx))
})
}
func getAuthToken(username, password string) string {
token := hex.EncodeToString(hmac.New(sha1.New, []byte(username+password)).Sum(nil))
token = username + "/" + token
return token
}
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