From 8e43db07ace346e2fc4b9644e9c17a6e0739d670 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Thu, 11 May 2017 01:40:11 +0200
Subject: fix previous commit

---
 src/hub/src/spreadspace.org/sfive/s5srvAnon.go | 100 +++++++++++++++++++++++++
 src/hub/test-srv-anon                          |  19 +++++
 2 files changed, 119 insertions(+)
 create mode 100644 src/hub/src/spreadspace.org/sfive/s5srvAnon.go
 create mode 100755 src/hub/test-srv-anon

(limited to 'src')

diff --git a/src/hub/src/spreadspace.org/sfive/s5srvAnon.go b/src/hub/src/spreadspace.org/sfive/s5srvAnon.go
new file mode 100644
index 0000000..8626932
--- /dev/null
+++ b/src/hub/src/spreadspace.org/sfive/s5srvAnon.go
@@ -0,0 +1,100 @@
+//
+// sfive
+//
+// sfive - spreadspace streaming statistics suite is a generic
+// statistic collection tool for streaming server infrastuctures.
+// The system collects and stores meta data like number of views
+// and throughput from a number of streaming servers and stores
+// it in a global data store.
+// The data acquisition is designed to be generic and extensible in
+// order to support different streaming software.
+// sfive also contains tools and applications to filter and visualize
+// live and recorded data.
+//
+//
+// Copyright (C) 2014-2017 Christian Pointner <equinox@spreadspace.org>
+//                         Markus Grüneis <gimpf@gimpf.org>
+//
+// This file is part of sfive.
+//
+// sfive is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 3
+// as published by the Free Software Foundation.
+//
+// sfive 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 sfive. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package sfive
+
+import (
+	"crypto/rand"
+	"errors"
+	"io/ioutil"
+	"net"
+	"os"
+
+	"github.com/Yawning/cryptopan"
+)
+
+type AnonymizationAlgo interface {
+	String() string
+	Anonymize(addr string) (string, error)
+}
+
+func readOrGenerateKey(keyFile string, size int) (key []byte, err error) {
+	if keyFile != "" {
+		var kf *os.File
+		if kf, err = os.Open(keyFile); err != nil {
+			return
+		}
+		defer kf.Close()
+		return ioutil.ReadAll(kf)
+	}
+
+	key = make([]byte, size)
+	_, err = rand.Read(key)
+	return
+}
+
+//
+// CryptoPan based anonymization
+//
+
+type CryptoPanAnonymization struct {
+	ctx     *cryptopan.Cryptopan
+	keyFile string
+}
+
+func (cp *CryptoPanAnonymization) String() string {
+	if cp.keyFile == "" {
+		return "CryptoPan, with random key"
+	}
+	return "CryptoPan, with key from file: " + cp.keyFile
+}
+
+func (cp *CryptoPanAnonymization) Anonymize(addr string) (string, error) {
+	ip := net.ParseIP(addr)
+	if ip == nil {
+		return "", errors.New("address '" + addr + "' is not valid")
+	}
+	return cp.ctx.Anonymize(ip).String(), nil
+}
+
+func NewCryptopanAnonymization(keyFile string) (AnonymizationAlgo, error) {
+	key, err := readOrGenerateKey(keyFile, cryptopan.Size)
+	if err != nil {
+		return nil, err
+	}
+
+	cp := &CryptoPanAnonymization{keyFile: keyFile}
+	if cp.ctx, err = cryptopan.New(key); err != nil {
+		return nil, err
+	}
+	return cp, nil
+}
diff --git a/src/hub/test-srv-anon b/src/hub/test-srv-anon
new file mode 100755
index 0000000..93f41ab
--- /dev/null
+++ b/src/hub/test-srv-anon
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+if [ -z "$1" ]; then
+  echo "Usage: $0 <db-name> [ <key-file> ]"
+  exit 1
+fi
+
+TEST_D="./test"
+TEST_DB="$TEST_D/$1.bolt"
+EXTRA_OPTS=""
+
+
+if [ -n "$2" ]; then
+  EXTRA_OPTS="$EXTRA_OPTS -anonymization-key-file $2"
+fi
+
+mkdir -p "$TEST_D"
+rm -f "$TEST_D/pipe" "$TEST_D/pipegram"
+exec ./bin/sfive-hub -db "$TEST_DB" -start-pipe-server -pipe "$TEST_D/pipe" -start-pipegram-server -pipegram "$TEST_D/pipegram" -start-web-server -web ":8000" -anonymize $EXTRA_OPTS
-- 
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