added simple HTTP upload handler

2 files changed, 129 insertions, 1 deletions

diff --git a/src/rhimportd/ctrlWeb.go b/src/rhimportd/ctrlWeb.go
index 40075d0..70d8733 100644
--- a/src/rhimportd/ctrlWeb.go
+++ b/src/rhimportd/ctrlWeb.go
@@ -45,10 +45,11 @@ func (self webHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 }
 
 func StartControlWeb(addr string, conf *rhimport.Config, db *rddb.DBChan, sessions *rhimport.SessionStoreChan) {
-	http.Handle("/public/simple", webHandler{conf, db, sessions, false, webSimpleHandler})
 	//	http.Handle("/trusted/simple", webHandler{conf, db, sessions, true, webSimpleHandler})
 
+	http.Handle("/public/simple", webHandler{conf, db, sessions, false, webSimpleHandler})
 	http.Handle("/public/socket", webHandler{conf, db, sessions, false, webSocketHandler})
+	http.Handle("/public/upload", webHandler{conf, db, sessions, false, webUploadHandler})
 
 	rhl.Println("web-ctrl: listening on", addr)
 	server := &http.Server{Addr: addr, ReadTimeout: 60 * time.Second, WriteTimeout: 60 * time.Second}
diff --git a/src/rhimportd/uploadWeb.go b/src/rhimportd/uploadWeb.go
new file mode 100644
index 0000000..02d918c
--- /dev/null
+++ b/src/rhimportd/uploadWeb.go
@@ -0,0 +1,127 @@
+//
+//  rhimportd
+//
+//  The Radio Helsinki Rivendell Import Daemon
+//
+//
+//  Copyright (C) 2015-2016 Christian Pointner <equinox@helsinki.at>
+//
+//  This file is part of rhimportd.
+//
+//  rhimportd is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  any later version.
+//
+//  rhimportd is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with rhimportd. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package main
+
+import (
+	"code.helsinki.at/rhrd-go/rddb"
+	"code.helsinki.at/rhrd-go/rhimport"
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"strings"
+)
+
+type webUploadResponseData struct {
+	ResponseCode int    `json:"RESPONSE_CODE"`
+	ErrorString  string `json:"ERROR_STRING"`
+	SourceFile   string `json:"SOURCE_FILE"`
+}
+
+func webUploadErrorResponse(w http.ResponseWriter, code int, errStr string) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	encoder := json.NewEncoder(w)
+	respdata := webUploadResponseData{code, errStr, ""}
+	encoder.Encode(respdata)
+}
+
+func webUploadResponse(w http.ResponseWriter, file string) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	encoder := json.NewEncoder(w)
+	respdata := webUploadResponseData{http.StatusOK, "success", file}
+	encoder.Encode(respdata)
+}
+
+func webUploadHandler(conf *rhimport.Config, db *rddb.DBChan, sessions *rhimport.SessionStoreChan, trusted bool, w http.ResponseWriter, r *http.Request) {
+	if r.Method == "GET" {
+		http.ServeFile(w, r, "./html/upload-form.html")
+		return
+	}
+
+	if r.Method != "POST" {
+		rhl.Printf("WebUploadHandler: got invalid request method")
+		webUploadErrorResponse(w, http.StatusMethodNotAllowed, "only POST and GET method are allowed")
+		return
+	}
+
+	if err := r.ParseMultipartForm(2 << 30); err != nil { // TODO: howto limit max file size???
+		rhl.Printf("WebUploadHandler: error while parsing multi-part-form: %v", err)
+		webUploadErrorResponse(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	username := r.FormValue("LOGIN_NAME")
+	password := r.FormValue("PASSWORD")
+	if username == "" {
+		webUploadErrorResponse(w, http.StatusBadRequest, "missing field LOGIN_NAME")
+		return
+	}
+	if password == "" {
+		webUploadErrorResponse(w, http.StatusBadRequest, "missing field LOGIN_NAME")
+		return
+	}
+
+	if authenticated, err := db.CheckPassword(username, password); err != nil {
+		rhl.Printf("WebUploadHandler: error checking username/password: %v", err)
+		webUploadErrorResponse(w, http.StatusUnauthorized, err.Error())
+		return
+	} else if !authenticated {
+		rhl.Printf("WebUploadHandler: invalid username/password")
+		webUploadErrorResponse(w, http.StatusUnauthorized, "invalid username/password")
+		return
+	}
+
+	src, hdr, err := r.FormFile("FILENAME")
+	if err != nil {
+		rhdl.Printf("WebUploadHandler: error looking for upload file in form: %s", err)
+		webUploadErrorResponse(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	defer src.Close()
+
+	rhl.Printf("WebUploadHandler: got request from user '%s', filename='%s'", username, hdr.Filename)
+
+	dstpath, err := ioutil.TempDir(conf.TempDir, "rhimportd-")
+	if err != nil {
+		rhl.Printf("WebUploadHandler: error creating temporary directory: %v", err)
+		webUploadErrorResponse(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	dstfile := dstpath + "/" + hdr.Filename
+	dst, err := os.OpenFile(dstfile, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
+	if err != nil {
+		rhl.Printf("WebUploadHandler: Unable to create file '%s': %v", dstfile, err)
+		webUploadErrorResponse(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	defer dst.Close()
+
+	io.Copy(dst, src)
+	webUploadResponse(w, "tmp://"+strings.TrimPrefix(dstfile, conf.TempDir))
+}