Initial

transfersh-server/utils.go

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+/*
+The MIT License (MIT)
+
+Copyright (c) 2014 DutchCoders [https://github.com/dutchcoders/]
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+package main
+
+import (
+	"github.com/goamz/goamz/aws"
+	"github.com/goamz/goamz/s3"
+	"net/http"
+	"net/mail"
+	"strings"
+	"time"
+)
+
+func getBucket() (*s3.Bucket, error) {
+	auth, err := aws.GetAuth(config.AWS_ACCESS_KEY, config.AWS_SECRET_KEY, "", time.Time{})
+	if err != nil {
+		return nil, err
+	}
+
+	conn := s3.New(auth, aws.Regions["eu-west-1"])
+	b := conn.Bucket(config.BUCKET)
+	return b, nil
+}
+
+// Request.RemoteAddress contains port, which we want to remove i.e.:
+// "[::1]:58292" => "[::1]"
+func ipAddrFromRemoteAddr(s string) string {
+	idx := strings.LastIndex(s, ":")
+	if idx == -1 {
+		return s
+	}
+	return s[:idx]
+}
+
+func getIpAddress(r *http.Request) string {
+	hdr := r.Header
+	hdrRealIp := hdr.Get("X-Real-Ip")
+	hdrForwardedFor := hdr.Get("X-Forwarded-For")
+	if hdrRealIp == "" && hdrForwardedFor == "" {
+		return ipAddrFromRemoteAddr(r.RemoteAddr)
+	}
+	if hdrForwardedFor != "" {
+		// X-Forwarded-For is potentially a list of addresses separated with ","
+		parts := strings.Split(hdrForwardedFor, ",")
+		for i, p := range parts {
+			parts[i] = strings.TrimSpace(p)
+		}
+		// TODO: should return first non-local address
+		return parts[0]
+	}
+	return hdrRealIp
+}
+
+func encodeRFC2047(String string) string {
+	// use mail's rfc2047 to encode any string
+	addr := mail.Address{String, ""}
+	return strings.Trim(addr.String(), " <>")
+}