259 lines
6.9 KiB
Go
259 lines
6.9 KiB
Go
package server
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import (
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"bytes"
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"crypto/rand"
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"database/sql"
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"io/ioutil"
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"net/http"
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"time"
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"github.com/btcsuite/btcutil/base58"
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"go.uber.org/zap"
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"github.com/status-im/status-go/ipfs"
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"github.com/status-im/status-go/protocol/common"
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"github.com/status-im/status-go/protocol/identity/identicon"
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"github.com/status-im/status-go/protocol/images"
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)
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const (
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basePath = "/messages"
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identiconsPath = basePath + "/identicons"
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imagesPath = basePath + "/images"
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audioPath = basePath + "/audio"
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ipfsPath = "/ipfs"
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// Handler routes for pairing
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pairingBase = "/pairing"
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pairingSend = pairingBase + "/send"
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pairingReceive = pairingBase + "/receive"
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pairingChallenge = pairingBase + "/challenge"
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// Session names
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sessionChallenge = "challenge"
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sessionBlocked = "blocked"
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)
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type HandlerPatternMap map[string]http.HandlerFunc
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func handleIdenticon(logger *zap.Logger) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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pks, ok := r.URL.Query()["publicKey"]
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if !ok || len(pks) == 0 {
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logger.Error("no publicKey")
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return
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}
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pk := pks[0]
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image, err := identicon.Generate(pk)
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if err != nil {
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logger.Error("could not generate identicon")
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}
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w.Header().Set("Content-Type", "image/png")
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w.Header().Set("Cache-Control", "max-age:290304000, public")
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w.Header().Set("Expires", time.Now().AddDate(60, 0, 0).Format(http.TimeFormat))
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_, err = w.Write(image)
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if err != nil {
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logger.Error("failed to write image", zap.Error(err))
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}
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}
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}
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func handleImage(db *sql.DB, logger *zap.Logger) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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messageIDs, ok := r.URL.Query()["messageId"]
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if !ok || len(messageIDs) == 0 {
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logger.Error("no messageID")
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return
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}
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messageID := messageIDs[0]
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var image []byte
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err := db.QueryRow(`SELECT image_payload FROM user_messages WHERE id = ?`, messageID).Scan(&image)
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if err != nil {
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logger.Error("failed to find image", zap.Error(err))
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return
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}
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if len(image) == 0 {
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logger.Error("empty image")
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return
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}
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mime, err := images.ImageMime(image)
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if err != nil {
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logger.Error("failed to get mime", zap.Error(err))
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}
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w.Header().Set("Content-Type", mime)
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w.Header().Set("Cache-Control", "no-store")
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_, err = w.Write(image)
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if err != nil {
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logger.Error("failed to write image", zap.Error(err))
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}
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}
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}
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func handleAudio(db *sql.DB, logger *zap.Logger) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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messageIDs, ok := r.URL.Query()["messageId"]
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if !ok || len(messageIDs) == 0 {
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logger.Error("no messageID")
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return
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}
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messageID := messageIDs[0]
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var audio []byte
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err := db.QueryRow(`SELECT audio_payload FROM user_messages WHERE id = ?`, messageID).Scan(&audio)
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if err != nil {
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logger.Error("failed to find image", zap.Error(err))
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return
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}
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if len(audio) == 0 {
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logger.Error("empty audio")
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return
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}
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w.Header().Set("Content-Type", "audio/aac")
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w.Header().Set("Cache-Control", "no-store")
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_, err = w.Write(audio)
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if err != nil {
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logger.Error("failed to write audio", zap.Error(err))
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}
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}
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}
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func handleIPFS(downloader *ipfs.Downloader, logger *zap.Logger) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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hashes, ok := r.URL.Query()["hash"]
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if !ok || len(hashes) == 0 {
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logger.Error("no hash")
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return
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}
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_, download := r.URL.Query()["download"]
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content, err := downloader.Get(hashes[0], download)
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if err != nil {
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logger.Error("could not download hash", zap.Error(err))
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return
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}
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w.Header().Set("Cache-Control", "max-age:290304000, public")
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w.Header().Set("Expires", time.Now().AddDate(60, 0, 0).Format(http.TimeFormat))
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_, err = w.Write(content)
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if err != nil {
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logger.Error("failed to write ipfs resource", zap.Error(err))
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}
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}
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}
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func handlePairingReceive(ps *PairingServer) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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payload, err := ioutil.ReadAll(r.Body)
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if err != nil {
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ps.logger.Error("ioutil.ReadAll(r.Body)", zap.Error(err))
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}
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err = ps.PayloadManager.Receive(payload)
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if err != nil {
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ps.logger.Error("ps.PayloadManager.Receive(payload)", zap.Error(err))
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}
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}
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}
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func handlePairingSend(ps *PairingServer) http.HandlerFunc {
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// TODO lock sending after one successful transfer
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/octet-stream")
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_, err := w.Write(ps.PayloadManager.ToSend())
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if err != nil {
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ps.logger.Error("w.Write(ps.PayloadManager.ToSend())", zap.Error(err))
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}
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}
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}
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func challengeMiddleware(ps *PairingServer, next http.Handler) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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s, err := ps.cookieStore.Get(r, sessionChallenge)
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if err != nil {
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ps.logger.Error("ps.cookieStore.Get(r, pairingStoreChallenge)", zap.Error(err))
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http.Error(w, "error", http.StatusInternalServerError)
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}
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blocked, ok := s.Values[sessionBlocked].(bool)
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if ok && blocked {
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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// If the request header doesn't include a challenge don't punish the client, just throw a 403
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pc := r.Header.Get(sessionChallenge)
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if pc == "" {
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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c, err := common.Decrypt(base58.Decode(pc), ps.ek)
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if err != nil {
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ps.logger.Error("c, err := common.Decrypt(rc, ps.ek)", zap.Error(err))
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http.Error(w, "error", http.StatusInternalServerError)
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return
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}
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// If the challenge is not in the session store don't punish the client, just throw a 403
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challenge, ok := s.Values[sessionChallenge].([]byte)
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if !ok {
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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// Only if we have both a challenge in the session store and in the request header
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// do we entertain blocking the client. Because then we know someone is trying to be sneaky.
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if bytes.Compare(c, challenge) != 0 {
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s.Values[sessionBlocked] = true
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err = s.Save(r, w)
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if err != nil {
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ps.logger.Error("err = s.Save(r, w)", zap.Error(err))
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}
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http.Error(w, "forbidden", http.StatusForbidden)
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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 handlePairingChallenge(ps *PairingServer) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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s, err := ps.cookieStore.Get(r, sessionChallenge)
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if err != nil {
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ps.logger.Error("ps.cookieStore.Get(r, pairingStoreChallenge)", zap.Error(err))
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}
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var challenge []byte
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challenge, ok := s.Values[sessionChallenge].([]byte)
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if !ok {
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challenge = make([]byte, 64)
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_, err = rand.Read(challenge)
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if err != nil {
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ps.logger.Error("_, err = rand.Read(auth)", zap.Error(err))
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}
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s.Values[sessionChallenge] = challenge
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err = s.Save(r, w)
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if err != nil {
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ps.logger.Error("err = s.Save(r, w)", zap.Error(err))
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}
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}
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w.Header().Set("Content-Type", "application/octet-stream")
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_, err = w.Write(challenge)
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if err != nil {
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ps.logger.Error("_, err = w.Write(challenge)", zap.Error(err))
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}
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}
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}
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