Add vendor deps and Debian package metadata

debian/auth-server.postinst

+#!/bin/sh
+# postinstall script for auth-server.
+
+case "$1" in
+configure)
+
+	adduser --quiet --system --home /nonexistent --no-create-home \
+	    --disabled-password --group auth-server
+
+	;;
+abort-upgrade|abort-remove|abort-deconfigure)
+	;;
+*)
+        echo "postinst called with unknown argument \`$1'" >&2
+        exit 1
+	;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0

debian/auth-server.service

+[Unit]
+Description=Authentication server
+Requires=auth-server.socket
+
+[Service]
+Type=notify
+ExecStart=/usr/bin/auth-server --systemd-socket
+Restart=on-failure
+User=auth-server
+
+[Install]
+WantedBy=multi-user.target
+

debian/auth-server.socket

+[Unit]
+Description=Authentication socket
+
+[Socket]
+ListenStream=/run/auth/socket
+SocketMode=660
+DirectoryMode=750
+SocketUser=auth-server
+SocketGroup=auth-server
+Accept=false
+

debian/changelog

+auth-server (0.2) unstable; urgency=medium
+
+  * New release (UNIX socket only).
+
+ -- Autistici/Inventati <debian@autistici.org>  Wed, 01 Nov 2017 10:03:19 +0000

debian/compat

+10

debian/control

+Source: auth-server
+Section: net
+Priority: extra
+Maintainer: Autistici/Inventati <debian@autistici.org>
+Build-Depends: debhelper (>= 8.0.0), golang-go, dh-golang, dh-systemd
+Standards-Version: 3.9.4
+
+Package: auth-server
+Architecture: all
+Depends: ${misc:Depends}
+Description: Auth server package.
+ Centralized authentication server with OTP support.
+

debian/copyright

+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: auth-pam
+Source: <https://git.autistici.org/id/auth-pam>
+
+Files: *
+Copyright: 2017 Autistici/Inventati <debian@autistici.org>
+License: MIT
+ 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.
+

debian/rules

+#!/usr/bin/make -f
+# -*- makefile -*-
+
+# This has to be exported to make some magic below work.
+export DH_OPTIONS
+
+export DH_GOPKG = git.autistici.org/id/auth
+export DH_GOLANG_EXCLUDES = vendor
+
+%:
+	dh $@ --with golang --with systemd --buildsystem golang
+
+override_dh_auto_test:
+
+override_dh_install:
+	rm -fr $(CURDIR)/debian/auth-server/usr/share/gocode
+	dh_install
+

debian/source/format

+3.0 (native)

vendor/github.com/boombuler/barcode/LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2014 Florian Sundermann
+
+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.

vendor/github.com/boombuler/barcode/README.md

+[![Join the chat at https://gitter.im/golang-barcode/Lobby](https://badges.gitter.im/golang-barcode/Lobby.svg)](https://gitter.im/golang-barcode/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+## Introduction ##
+
+This is a package for GO which can be used to create different types of barcodes.
+
+## Supported Barcode Types ##
+* 2 of 5
+* Aztec Code
+* Codabar
+* Code 128
+* Code 39
+* Code 93
+* Datamatrix
+* EAN 13
+* EAN 8
+* PDF 417
+* QR Code
+
+## Example ##
+
+This is a simple example on how to create a QR-Code and write it to a png-file
+```go
+package main
+
+import (
+	"image/png"
+	"os"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/qr"
+)
+
+func main() {
+	// Create the barcode
+	qrCode, _ := qr.Encode("Hello World", qr.M, qr.Auto)
+
+	// Scale the barcode to 200x200 pixels
+	qrCode, _ = barcode.Scale(qrCode, 200, 200)
+
+	// create the output file
+	file, _ := os.Create("qrcode.png")
+	defer file.Close()
+
+	// encode the barcode as png
+	png.Encode(file, qrCode)
+}
+```
+
+## Documentation ##
+See [GoDoc](https://godoc.org/github.com/boombuler/barcode)
+
+To create a barcode use the Encode function from one of the subpackages.

vendor/github.com/boombuler/barcode/barcode.go

+package barcode
+
+import "image"
+
+const (
+	TypeAztec           = "Aztec"
+	TypeCodabar         = "Codabar"
+	TypeCode128         = "Code 128"
+	TypeCode39          = "Code 39"
+	TypeCode93          = "Code 93"
+	TypeDataMatrix      = "DataMatrix"
+	TypeEAN8            = "EAN 8"
+	TypeEAN13           = "EAN 13"
+	TypePDF             = "PDF417"
+	TypeQR              = "QR Code"
+	Type2of5            = "2 of 5"
+	Type2of5Interleaved = "2 of 5 (interleaved)"
+)
+
+// Contains some meta information about a barcode
+type Metadata struct {
+	// the name of the barcode kind
+	CodeKind string
+	// contains 1 for 1D barcodes or 2 for 2D barcodes
+	Dimensions byte
+}
+
+// a rendered and encoded barcode
+type Barcode interface {
+	image.Image
+	// returns some meta information about the barcode
+	Metadata() Metadata
+	// the data that was encoded in this barcode
+	Content() string
+}
+
+// Additional interface that some barcodes might implement to provide
+// the value of its checksum.
+type BarcodeIntCS interface {
+	Barcode
+	CheckSum() int
+}

vendor/github.com/boombuler/barcode/qr/alphanumeric.go

+package qr
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/boombuler/barcode/utils"
+)
+
+const charSet string = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:"
+
+func stringToAlphaIdx(content string) <-chan int {
+	result := make(chan int)
+	go func() {
+		for _, r := range content {
+			idx := strings.IndexRune(charSet, r)
+			result <- idx
+			if idx < 0 {
+				break
+			}
+		}
+		close(result)
+	}()
+
+	return result
+}
+
+func encodeAlphaNumeric(content string, ecl ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error) {
+
+	contentLenIsOdd := len(content)%2 == 1
+	contentBitCount := (len(content) / 2) * 11
+	if contentLenIsOdd {
+		contentBitCount += 6
+	}
+	vi := findSmallestVersionInfo(ecl, alphaNumericMode, contentBitCount)
+	if vi == nil {
+		return nil, nil, errors.New("To much data to encode")
+	}
+
+	res := new(utils.BitList)
+	res.AddBits(int(alphaNumericMode), 4)
+	res.AddBits(len(content), vi.charCountBits(alphaNumericMode))
+
+	encoder := stringToAlphaIdx(content)
+
+	for idx := 0; idx < len(content)/2; idx++ {
+		c1 := <-encoder
+		c2 := <-encoder
+		if c1 < 0 || c2 < 0 {
+			return nil, nil, fmt.Errorf("\"%s\" can not be encoded as %s", content, AlphaNumeric)
+		}
+		res.AddBits(c1*45+c2, 11)
+	}
+	if contentLenIsOdd {
+		c := <-encoder
+		if c < 0 {
+			return nil, nil, fmt.Errorf("\"%s\" can not be encoded as %s", content, AlphaNumeric)
+		}
+		res.AddBits(c, 6)
+	}
+
+	addPaddingAndTerminator(res, vi)
+
+	return res, vi, nil
+}

vendor/github.com/boombuler/barcode/qr/automatic.go

+package qr
+
+import (
+	"fmt"
+
+	"github.com/boombuler/barcode/utils"
+)
+
+func encodeAuto(content string, ecl ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error) {
+	bits, vi, _ := Numeric.getEncoder()(content, ecl)
+	if bits != nil && vi != nil {
+		return bits, vi, nil
+	}
+	bits, vi, _ = AlphaNumeric.getEncoder()(content, ecl)
+	if bits != nil && vi != nil {
+		return bits, vi, nil
+	}
+	bits, vi, _ = Unicode.getEncoder()(content, ecl)
+	if bits != nil && vi != nil {
+		return bits, vi, nil
+	}
+	return nil, nil, fmt.Errorf("No encoding found to encode \"%s\"", content)
+}

vendor/github.com/boombuler/barcode/qr/blocks.go

+package qr
+
+type block struct {
+	data []byte
+	ecc  []byte
+}
+type blockList []*block
+
+func splitToBlocks(data <-chan byte, vi *versionInfo) blockList {
+	result := make(blockList, vi.NumberOfBlocksInGroup1+vi.NumberOfBlocksInGroup2)
+
+	for b := 0; b < int(vi.NumberOfBlocksInGroup1); b++ {
+		blk := new(block)
+		blk.data = make([]byte, vi.DataCodeWordsPerBlockInGroup1)
+		for cw := 0; cw < int(vi.DataCodeWordsPerBlockInGroup1); cw++ {
+			blk.data[cw] = <-data
+		}
+		blk.ecc = ec.calcECC(blk.data, vi.ErrorCorrectionCodewordsPerBlock)
+		result[b] = blk
+	}
+
+	for b := 0; b < int(vi.NumberOfBlocksInGroup2); b++ {
+		blk := new(block)
+		blk.data = make([]byte, vi.DataCodeWordsPerBlockInGroup2)
+		for cw := 0; cw < int(vi.DataCodeWordsPerBlockInGroup2); cw++ {
+			blk.data[cw] = <-data
+		}
+		blk.ecc = ec.calcECC(blk.data, vi.ErrorCorrectionCodewordsPerBlock)
+		result[int(vi.NumberOfBlocksInGroup1)+b] = blk
+	}
+
+	return result
+}
+
+func (bl blockList) interleave(vi *versionInfo) []byte {
+	var maxCodewordCount int
+	if vi.DataCodeWordsPerBlockInGroup1 > vi.DataCodeWordsPerBlockInGroup2 {
+		maxCodewordCount = int(vi.DataCodeWordsPerBlockInGroup1)
+	} else {
+		maxCodewordCount = int(vi.DataCodeWordsPerBlockInGroup2)
+	}
+	resultLen := (vi.DataCodeWordsPerBlockInGroup1+vi.ErrorCorrectionCodewordsPerBlock)*vi.NumberOfBlocksInGroup1 +
+		(vi.DataCodeWordsPerBlockInGroup2+vi.ErrorCorrectionCodewordsPerBlock)*vi.NumberOfBlocksInGroup2
+
+	result := make([]byte, 0, resultLen)
+	for i := 0; i < maxCodewordCount; i++ {
+		for b := 0; b < len(bl); b++ {
+			if len(bl[b].data) > i {
+				result = append(result, bl[b].data[i])
+			}
+		}
+	}
+	for i := 0; i < int(vi.ErrorCorrectionCodewordsPerBlock); i++ {
+		for b := 0; b < len(bl); b++ {
+			result = append(result, bl[b].ecc[i])
+		}
+	}
+	return result
+}

vendor/github.com/boombuler/barcode/qr/encoder.go

+// Package qr can be used to create QR barcodes.
+package qr
+
+import (
+	"image"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/utils"
+)
+
+type encodeFn func(content string, eccLevel ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error)
+
+// Encoding mode for QR Codes.
+type Encoding byte
+
+const (
+	// Auto will choose ths best matching encoding
+	Auto Encoding = iota
+	// Numeric encoding only encodes numbers [0-9]
+	Numeric
+	// AlphaNumeric encoding only encodes uppercase letters, numbers and  [Space], $, %, *, +, -, ., /, :
+	AlphaNumeric
+	// Unicode encoding encodes the string as utf-8
+	Unicode
+	// only for testing purpose
+	unknownEncoding
+)
+
+func (e Encoding) getEncoder() encodeFn {
+	switch e {
+	case Auto:
+		return encodeAuto
+	case Numeric:
+		return encodeNumeric
+	case AlphaNumeric:
+		return encodeAlphaNumeric
+	case Unicode:
+		return encodeUnicode
+	}
+	return nil
+}
+
+func (e Encoding) String() string {
+	switch e {
+	case Auto:
+		return "Auto"
+	case Numeric:
+		return "Numeric"
+	case AlphaNumeric:
+		return "AlphaNumeric"
+	case Unicode:
+		return "Unicode"
+	}
+	return ""
+}
+
+// Encode returns a QR barcode with the given content, error correction level and uses the given encoding
+func Encode(content string, level ErrorCorrectionLevel, mode Encoding) (barcode.Barcode, error) {
+	bits, vi, err := mode.getEncoder()(content, level)
+	if err != nil {
+		return nil, err
+	}
+
+	blocks := splitToBlocks(bits.IterateBytes(), vi)
+	data := blocks.interleave(vi)
+	result := render(data, vi)
+	result.content = content
+	return result, nil
+}
+
+func render(data []byte, vi *versionInfo) *qrcode {
+	dim := vi.modulWidth()
+	results := make([]*qrcode, 8)
+	for i := 0; i < 8; i++ {
+		results[i] = newBarcode(dim)
+	}
+
+	occupied := newBarcode(dim)
+
+	setAll := func(x int, y int, val bool) {
+		occupied.Set(x, y, true)
+		for i := 0; i < 8; i++ {
+			results[i].Set(x, y, val)
+		}
+	}
+
+	drawFinderPatterns(vi, setAll)
+	drawAlignmentPatterns(occupied, vi, setAll)
+
+	//Timing Pattern:
+	var i int
+	for i = 0; i < dim; i++ {
+		if !occupied.Get(i, 6) {
+			setAll(i, 6, i%2 == 0)
+		}
+		if !occupied.Get(6, i) {
+			setAll(6, i, i%2 == 0)
+		}
+	}
+	// Dark Module
+	setAll(8, dim-8, true)
+
+	drawVersionInfo(vi, setAll)
+	drawFormatInfo(vi, -1, occupied.Set)
+	for i := 0; i < 8; i++ {
+		drawFormatInfo(vi, i, results[i].Set)
+	}
+
+	// Write the data
+	var curBitNo int
+
+	for pos := range iterateModules(occupied) {
+		var curBit bool
+		if curBitNo < len(data)*8 {
+			curBit = ((data[curBitNo/8] >> uint(7-(curBitNo%8))) & 1) == 1
+		} else {
+			curBit = false
+		}
+
+		for i := 0; i < 8; i++ {
+			setMasked(pos.X, pos.Y, curBit, i, results[i].Set)
+		}
+		curBitNo++
+	}
+
+	lowestPenalty := ^uint(0)
+	lowestPenaltyIdx := -1
+	for i := 0; i < 8; i++ {
+		p := results[i].calcPenalty()
+		if p < lowestPenalty {
+			lowestPenalty = p
+			lowestPenaltyIdx = i
+		}
+	}
+	return results[lowestPenaltyIdx]
+}
+
+func setMasked(x, y int, val bool, mask int, set func(int, int, bool)) {
+	switch mask {
+	case 0:
+		val = val != (((y + x) % 2) == 0)
+		break
+	case 1:
+		val = val != ((y % 2) == 0)
+		break
+	case 2:
+		val = val != ((x % 3) == 0)
+		break
+	case 3:
+		val = val != (((y + x) % 3) == 0)
+		break
+	case 4:
+		val = val != (((y/2 + x/3) % 2) == 0)
+		break
+	case 5:
+		val = val != (((y*x)%2)+((y*x)%3) == 0)
+		break
+	case 6:
+		val = val != ((((y*x)%2)+((y*x)%3))%2 == 0)
+		break
+	case 7:
+		val = val != ((((y+x)%2)+((y*x)%3))%2 == 0)
+	}
+	set(x, y, val)
+}
+
+func iterateModules(occupied *qrcode) <-chan image.Point {
+	result := make(chan image.Point)
+	allPoints := make(chan image.Point)
+	go func() {
+		curX := occupied.dimension - 1
+		curY := occupied.dimension - 1
+		isUpward := true
+
+		for true {
+			if isUpward {
+				allPoints <- image.Pt(curX, curY)
+				allPoints <- image.Pt(curX-1, curY)
+				curY--
+				if curY < 0 {
+					curY = 0
+					curX -= 2
+					if curX == 6 {
+						curX--
+					}
+					if curX < 0 {
+						break
+					}
+					isUpward = false
+				}
+			} else {
+				allPoints <- image.Pt(curX, curY)
+				allPoints <- image.Pt(curX-1, curY)
+				curY++
+				if curY >= occupied.dimension {
+					curY = occupied.dimension - 1
+					curX -= 2
+					if curX == 6 {
+						curX--
+					}
+					isUpward = true
+					if curX < 0 {
+						break
+					}
+				}
+			}
+		}