package main import ( "crypto/sha256" "fmt" "net/http" "strings" "github.com/gorilla/mux" ) // handles "/" func indexHandler(w http.ResponseWriter, r *http.Request) { pingAssets() etag := fmt.Sprintf("%x", sha256.Sum256([]byte(staticCache.indexMod.String()))) // Take the hex-encoded sha256 sum of the index template's mod time // to send as an ETag. If an error occured when grabbing the file info, // the ETag will be empty. w.Header().Set("ETag", "\""+etag+"\"") w.Header().Set("Content-Type", htmlutf8) _, err := w.Write(staticCache.index) if err != nil { log500(w, r, err) return } log200(r) } // handles "/api" func apiBaseHandler(w http.ResponseWriter, r *http.Request) { indexHandler(w, r) } // handles "/api/plain" // maybe add json/xml support later func apiFormatHandler(w http.ResponseWriter, r *http.Request) { indexHandler(w, r) } // handles "/api/plain/(users|mentions|tweets)" func apiEndpointHandler(w http.ResponseWriter, r *http.Request) { err := r.ParseForm() if err != nil { log500(w, r, err) return } if r.FormValue("q") != "" || r.FormValue("url") != "" { err := apiEndpointQuery(w, r) if err != nil { log500(w, r, err) return } log200(r) return } // if there's no query, return everything in // registry for a given endpoint var out []string switch r.URL.Path { case "/api/plain/users": out, err = twtxtCache.QueryUser("") case "/api/plain/mentions": out, err = twtxtCache.QueryInStatus("@<") default: out, err = twtxtCache.QueryAllStatuses() } data := parseQueryOut(out) if err != nil { data = []byte("") } etag := fmt.Sprintf("%x", sha256.Sum256(data)) w.Header().Set("ETag", etag) w.Header().Set("Content-Type", txtutf8) _, err = w.Write(data) if err != nil { log500(w, r, err) return } log200(r) } // handles POST for "/api/plain/users" func apiEndpointPOSTHandler(w http.ResponseWriter, r *http.Request) { apiPostUser(w, r) } // handles "/api/plain/tags" func apiTagsBaseHandler(w http.ResponseWriter, r *http.Request) { out, err := twtxtCache.QueryInStatus("#") if err != nil { log500(w, r, err) return } data := parseQueryOut(out) etag := fmt.Sprintf("%x", sha256.Sum256(data)) w.Header().Set("ETag", etag) w.Header().Set("Content-Type", txtutf8) _, err = w.Write(data) if err != nil { log500(w, r, err) return } log200(r) } // handles "/api/plain/tags/[a-zA-Z0-9]+" func apiTagsHandler(w http.ResponseWriter, r *http.Request) { vars := mux.Vars(r) tags := vars["tags"] tags = strings.ToLower(tags) out, err := twtxtCache.QueryInStatus("#" + tags) if err != nil { log500(w, r, err) return } tags = strings.Title(tags) out2, err := twtxtCache.QueryInStatus("#" + tags) if err != nil { log500(w, r, err) return } tags = strings.ToUpper(tags) out3, err := twtxtCache.QueryInStatus("#" + tags) if err != nil { log500(w, r, err) return } out = append(out, out2...) out = append(out, out3...) out = uniq(out) data := parseQueryOut(out) etag := fmt.Sprintf("%x", sha256.Sum256(data)) w.Header().Set("ETag", etag) w.Header().Set("Content-Type", txtutf8) _, err = w.Write(data) if err != nil { log500(w, r, err) return } log200(r) } // Serving the stylesheet virtually because // files aren't served directly in getwtxt. func cssHandler(w http.ResponseWriter, r *http.Request) { // Sending the sha256 sum of the modtime in hexadecimal for the ETag header etag := fmt.Sprintf("%x", sha256.Sum256([]byte(staticCache.cssMod.String()))) w.Header().Set("ETag", "\""+etag+"\"") w.Header().Set("Content-Type", cssutf8) pingAssets() n, err := w.Write(staticCache.css) if err != nil || n == 0 { log500(w, r, err) return } log200(r) }