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ranpass
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Initial commit 

Signed-off-by: Nagy Károly Gábriel <k@jpi.io>
master
Nagy Károly Gábriel 4 years ago
commit
21a8e20140
Signed by: karasz
GPG Key ID: C6BA1070A8CBDA0C
10 changed files with 542 additions and 0 deletions
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  1. 19
      .editorconfig
  2. 26
      .gitignore
  3. 12
      Dockerfile
  4. 21
      LICENSE
  5. 57
      Makefile
  6. 5
      README.md
  7. 11
      go.mod
  8. 50
      go.sum
  9. 93
      main.go
  10. 248
      password.go

19
.editorconfig
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# http://editorconfig.org
root = true
[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true
indent_size = 4
indent_style = space
[*.go]
indent_style = tab
indent_size = 4
[Makefile]
indent_style = tab

26
.gitignore vendored
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
bin/
release/

12
Dockerfile
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FROM golang:alpine as build
WORKDIR /go/src/ranpass
COPY . /go/src/ranpass
RUN CGO_ENABLED=0 go build -o /go/bin/ranpass
FROM scratch
COPY --from=build /go/bin/ranpass /
EXPOSE 8080
ENTRYPOINT ["./ranpass"]

21
LICENSE
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MIT License
Copyright (c) 2019 Nagy Károly Gábriel
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.

57
Makefile
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# Makefile for projects using go mod.
#V := 1 # When V is set, print commands and build progress.
ARCHES:=amd64 arm64
OSES:=linux
BINARY:=ranpass
all: release
build:
$Q for arch in $(ARCHES) ; do \
for os in $(OSES); do \
CGO_ENABLED=0 GOOS=$$os GOARCH=$$arch go build $(VERSION_FLAGS) -a -installsuffix cgo -o ./bin/$(BINARY)-$$os-$$arch $(IMPORT_PATH); \
done ; \
done
release: clean build
$Q mkdir -p ./release
$Q for arch in $(ARCHES) ; do \
for os in $(OSES) ; do \
rm -rf ./tmp/$(BINARY) ; \
mkdir -p ./tmp/$(BINARY) ; \
cp -a ./bin/$(BINARY)-$$os-$$arch ./tmp/$(BINARY)/$(BINARY) ; \
tar -cz -C ./tmp -f ./release/$(BINARY)-$$os-$$arch-$(VERSION).tar.gz ./$(BINARY) ; \
rm -rf ./tmp ; \
done ; \
done
##### =====> Utility targets <===== #####
.PHONY: clean gen setup
clean:
$Q rm -rf bin
$Q rm -rf /release/*-$(VERSION)*
gen:
@echo "Running go generate"
$Q go generate
@echo "Done!"
setup:
@echo "Running go mod init"
$Q go mod init
@echo "Done!"
.PHONY: all build release
##### =====> Internals <===== #####
Q := $(if $V,,@)
IMPORT_PATH := $(shell awk -F" " '$$1=="module"{print $$2;exit;}' go.mod)
VERSION := $(shell git describe --tags --always --dirty="-dev")
DATE := $(shell date -u '+%Y-%m-%d-%H%M UTC')
VERSION_FLAGS := -ldflags='-s -w -X "main.Version=$(VERSION)" -X "main.BuildTime=$(DATE)"'

5
README.md
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# gonew
This is the go mod version of gonew.
If you want the previous version that is
using some hackery around GOPATH please
use the GOPATH branch https://github.com/karasz/gonew/tree/GOPATH

11
go.mod
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module git.jpi.io/JPI/ranpass
go 1.14
require (
github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
github.com/labstack/echo v3.3.10+incompatible
github.com/labstack/gommon v0.3.0 // indirect
github.com/valyala/fasttemplate v1.2.1 // indirect
golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad // indirect
)

50
go.sum
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github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
github.com/GeertJohan/go.rice v1.0.2 h1:PtRw+Tg3oa3HYwiDBZyvOJ8LdIyf6lAovJJtr7YOAYk=
github.com/GeertJohan/go.rice v1.0.2/go.mod h1:af5vUNlDNkCjOZeSGFgIJxDje9qdjsO6hshx0gTmZt4=
github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
github.com/daaku/go.zipexe v1.0.0 h1:VSOgZtH418pH9L16hC/JrgSNJbbAL26pj7lmD1+CGdY=
github.com/daaku/go.zipexe v1.0.0/go.mod h1:z8IiR6TsVLEYKwXAoE/I+8ys/sDkgTzSL0CLnGVd57E=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgrijalva/jwt-go v1.0.2 h1:KPldsxuKGsS2FPWsNeg9ZO18aCrGKujPoWXn2yo+KQM=
github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/foolin/echo-template v0.0.0-20190415034849-543a88245eec h1:BurQ3oNjJkB5+zibQGHw97kZOBN/DLlAKYlvfsacBD0=
github.com/foolin/echo-template v0.0.0-20190415034849-543a88245eec/go.mod h1:4ePCtze3Ivy48ps0gJWfSByLgfqvT0rF+RpKQFe4Ja0=
github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
github.com/labstack/echo v1.4.4 h1:1bEiBNeGSUKxcPDGfZ/7IgdhJJZx8wV/pICJh4W2NJI=
github.com/labstack/echo v3.3.10+incompatible h1:pGRcYk231ExFAyoAjAfD85kQzRJCRI8bbnE7CX5OEgg=
github.com/labstack/echo v3.3.10+incompatible/go.mod h1:0INS7j/VjnFxD4E2wkz67b8cVwCLbBmJyDaka6Cmk1s=
github.com/labstack/gommon v0.3.0 h1:JEeO0bvc78PKdyHxloTKiF8BD5iGrH8T6MSeGvSgob0=
github.com/labstack/gommon v0.3.0/go.mod h1:MULnywXg0yavhxWKc+lOruYdAhDwPK9wf0OL7NoOu+k=
github.com/mattn/go-colorable v0.1.2 h1:/bC9yWikZXAL9uJdulbSfyVNIR3n3trXl+v8+1sx8mU=
github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
github.com/mattn/go-isatty v0.0.9 h1:d5US/mDsogSGW37IV293h//ZFaeajb69h+EHFsv2xGg=
github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2yME+cCiQ=
github.com/nkovacs/streamquote v1.0.0/go.mod h1:BN+NaZ2CmdKqUuTUXUEm9j95B2TRbpOWpxbJYzzgUsc=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sethvargo/go-password v0.2.0 h1:BTDl4CC/gjf/axHMaDQtw507ogrXLci6XRiLc7i/UHI=
github.com/sethvargo/go-password v0.2.0/go.mod h1:Ym4Mr9JXLBycr02MFuVQ/0JHidNetSgbzutTr3zsYXE=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad h1:DN0cp81fZ3njFcrLCytUHRSUkqBjfTo4Tx9RJTWs0EY=
golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

93
main.go
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package main
import (
"flag"
"net/http"
"strconv"
"github.com/labstack/echo"
"github.com/labstack/echo/middleware"
)
type passwordData struct {
Length int
Digits int
Symbols int
NoUpper bool
DenyRepeat bool
Password string
}
var d, defaults passwordData
func generatePassword(c echo.Context) error {
var err error
d.Length, err = strconv.Atoi(c.FormValue("length"))
if err != nil {
d.Length = defaults.Length
}
d.Digits, err = strconv.Atoi(c.FormValue("digits"))
if err != nil {
d.Digits = defaults.Digits
}
d.Symbols, err = strconv.Atoi(c.FormValue("symbols"))
if err != nil {
d.Symbols = defaults.Symbols
}
if c.FormValue("noupper") == "on" {
d.NoUpper = true
}
if c.FormValue("denyrepeat") == "on" {
d.DenyRepeat = true
}
// Generate a password
d.Password, err = generate(d.Length, d.Digits, d.Symbols, d.NoUpper, !d.DenyRepeat)
if err != nil {
d.Password = "Error: " + err.Error()
}
if d.Length == 0 {
d.Password = "Error: password can not have zero length"
}
return c.String(http.StatusOK, d.Password)
}
func checkHealth(c echo.Context) error {
s := `{"status":"OK"}`
return c.String(http.StatusOK, s)
}
func main() {
// Set defaults
portPtr := flag.Int("listen", 8080, "Specify on which port to listen")
lengthPtr := flag.Int("length", 16, "Specify the password length")
digitsPtr := flag.Int("digits", 2, "Specify the the number of digits in the password")
symbolsPtr := flag.Int("symbols", 2, "Specify the the number of symbols in the password")
flag.Parse()
defaults.Length = *lengthPtr
defaults.Digits = *digitsPtr
defaults.Symbols = *symbolsPtr
e := echo.New()
e.HideBanner = true
// Middleware
e.Use(middleware.Logger())
e.Use(middleware.Recover())
e.GET("/", generatePassword)
e.POST("/", generatePassword)
e.GET("/health", checkHealth)
e.Logger.Fatal(e.Start(":" + strconv.Itoa(*portPtr)))
}

248
password.go
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// Package password provides a library for generating high-entropy random
// password strings via the crypto/rand package.
//
// res, err := Generate(64, 10, 10, false, false)
// if err != nil {
// log.Fatal(err)
// }
// log.Printf(res)
//
// Most functions are safe for concurrent use.
package main
import (
"crypto/rand"
"errors"
"io"
"math/big"
"strings"
)
const (
// LowerLetters is the list of lowercase letters.
LowerLetters = "abcdefghijklmnopqrstuvwxyz"
// UpperLetters is the list of uppercase letters.
UpperLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
// Digits is the list of permitted digits.
Digits = "0123456789"
// Symbols is the list of symbols.
Symbols = "~!@#$%^&*()_+`-={}|[]\\:\"<>?,./"
)
var (
// ErrExceedsTotalLength is the error returned with the number of digits and
// symbols is greater than the total length.
ErrExceedsTotalLength = errors.New("number of digits and symbols must be less than total length")
// ErrLettersExceedsAvailable is the error returned with the number of letters
// exceeds the number of available letters and repeats are not allowed.
ErrLettersExceedsAvailable = errors.New("number of letters exceeds available letters and repeats are not allowed")
// ErrDigitsExceedsAvailable is the error returned with the number of digits
// exceeds the number of available digits and repeats are not allowed.
ErrDigitsExceedsAvailable = errors.New("number of digits exceeds available digits and repeats are not allowed")
// ErrSymbolsExceedsAvailable is the error returned with the number of symbols
// exceeds the number of available symbols and repeats are not allowed.
ErrSymbolsExceedsAvailable = errors.New("number of symbols exceeds available symbols and repeats are not allowed")
)
type generator struct {
lowerLetters string
upperLetters string
digits string
symbols string
reader io.Reader
}
// GeneratorInput is used as input to the NewGenerator function.
type generatorInput struct {
LowerLetters string
UpperLetters string
Digits string
Symbols string
Reader io.Reader // rand.Reader by default
}
// NewGenerator creates a new Generator from the specified configuration. If no
// input is given, all the default values are used. This function is safe for
// concurrent use.
func newGenerator(i *generatorInput) (*generator, error) {
if i == nil {
i = new(generatorInput)
}
g := &generator{
lowerLetters: i.LowerLetters,
upperLetters: i.UpperLetters,
digits: i.Digits,
symbols: i.Symbols,
reader: i.Reader,
}
if g.lowerLetters == "" {
g.lowerLetters = LowerLetters
}
if g.upperLetters == "" {
g.upperLetters = UpperLetters
}
if g.digits == "" {
g.digits = Digits
}
if g.symbols == "" {
g.symbols = Symbols
}
if g.reader == nil {
g.reader = rand.Reader
}
return g, nil
}
// Generate generates a password with the given requirements. length is the
// total number of characters in the password. numDigits is the number of digits
// to include in the result. numSymbols is the number of symbols to include in
// the result. noUpper excludes uppercase letters from the results. allowRepeat
// allows characters to repeat.
//
// The algorithm is fast, but it's not designed to be performant; it favors
// entropy over speed. This function is safe for concurrent use.
func (g *generator) generate(length, numDigits, numSymbols int, noUpper, allowRepeat bool) (string, error) {
letters := g.lowerLetters
if !noUpper {
letters += g.upperLetters
}
chars := length - numDigits - numSymbols
if chars < 0 {
return "", ErrExceedsTotalLength
}
if !allowRepeat && chars > len(letters) {
return "", ErrLettersExceedsAvailable
}
if !allowRepeat && numDigits > len(g.digits) {
return "", ErrDigitsExceedsAvailable
}
if !allowRepeat && numSymbols > len(g.symbols) {
return "", ErrSymbolsExceedsAvailable
}
var result string
// Characters
for i := 0; i < chars; i++ {
ch, err := randomElement(g.reader, letters)
if err != nil {
return "", err
}
if !allowRepeat && strings.Contains(result, ch) {
i--
continue
}
result, err = randomInsert(g.reader, result, ch)
if err != nil {
return "", err
}
}
// Digits
for i := 0; i < numDigits; i++ {
d, err := randomElement(g.reader, g.digits)
if err != nil {
return "", err
}
if !allowRepeat && strings.Contains(result, d) {
i--
continue
}
result, err = randomInsert(g.reader, result, d)
if err != nil {
return "", err
}
}
// Symbols
for i := 0; i < numSymbols; i++ {
sym, err := randomElement(g.reader, g.symbols)
if err != nil {
return "", err
}
if !allowRepeat && strings.Contains(result, sym) {
i--
continue
}
result, err = randomInsert(g.reader, result, sym)
if err != nil {
return "", err
}
}
return result, nil
}
// MustGenerate is the same as Generate, but panics on error.
func (g *generator) mustGenerate(length, numDigits, numSymbols int, noUpper, allowRepeat bool) string {
res, err := g.generate(length, numDigits, numSymbols, noUpper, allowRepeat)
if err != nil {
panic(err)
}
return res
}
// Generate is the package shortcut for Generator.Generate.
func generate(length, numDigits, numSymbols int, noUpper, allowRepeat bool) (string, error) {
gen, err := newGenerator(nil)
if err != nil {
return "", err
}
return gen.generate(length, numDigits, numSymbols, noUpper, allowRepeat)
}
// MustGenerate is the package shortcut for Generator.MustGenerate.
func mustGenerate(length, numDigits, numSymbols int, noUpper, allowRepeat bool) string {
res, err := generate(length, numDigits, numSymbols, noUpper, allowRepeat)
if err != nil {
panic(err)
}
return res
}
// randomInsert randomly inserts the given value into the given string.
func randomInsert(reader io.Reader, s, val string) (string, error) {
if s == "" {
return val, nil
}
n, err := rand.Int(reader, big.NewInt(int64(len(s)+1)))
if err != nil {
return "", err
}
i := n.Int64()
return s[0:i] + val + s[i:], nil
}
// randomElement extracts a random element from the given string.
func randomElement(reader io.Reader, s string) (string, error) {
n, err := rand.Int(reader, big.NewInt(int64(len(s))))
if err != nil {
return "", err
}
return string(s[n.Int64()]), nil
}
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