Initial commit

rc/1.0.3
Ilya Sosnovsky 2 years ago
commit 9344591ce0
  1. 8
      .dockerignore
  2. 9
      .gitignore
  3. 4
      Dockerfile
  4. 201
      LICENSE
  5. 62
      README.md
  6. 5
      auth.sh
  7. 3
      build.sh
  8. 14
      go.mod
  9. 33
      go.sum
  10. 212
      openvpn-user.go

@ -0,0 +1,8 @@
# IntelliJ project files
.idea
*.iml
out
gen
openvpn-user.db
openvpn-user

9
.gitignore vendored

@ -0,0 +1,9 @@
openvpn-user
openvpn-user.db
# Editor directories and files
.idea
*.suo
*.ntvs*
*.njsproj
*.sln

@ -0,0 +1,4 @@
FROM golang:1.14.2-alpine3.11 AS builder
COPY . /app
RUN cd /app && env CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -ldflags='-linkmode external -extldflags "-static" -s -w' -o openvpn-user

@ -0,0 +1,201 @@
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@ -0,0 +1,62 @@
# openvpn-user
### disclaimer
Not tested in production environments!
Use it on your own risk =)
### Description
A simple tool to use with openvpn when you need to use `–auth-user-pass-verify` or wherever you want
### Example
part of openvpn server config
```bash
auth-user-pass-verify /etc/openvpn/scripts/auth.sh via-file
```
make sure `openvpn-user` binary available through `PATH` variable
i.e. put it in `/usr/local/sbin/openvpn-user`
### Usage
```
usage: openvpn-user [<flags>] <command> [<args> ...]
Flags:
--help Show context-sensitive help (also try --help-long and --help-man).
--db.path="./openvpn-user.db" path do openvpn-user db
Commands:
help [<command>...]
Show help.
db-init
Init db.
db-migrate
STUB: Migrate db.
create --user=USER --password=PASSWORD
Create user.
delete --user=USER
Delete user.
revoke --user=USER
Revoke user.
restore --user=USER
Restore user.
list [<flags>]
List active users.
flags:
--all Show all users include revoked and delete
auth --user=USER --password=PASSWORD
Auth user.
change-password --user=USER --password=PASSWORD
Change password
```

@ -0,0 +1,5 @@
#!/usr/bin/env sh
set -e
openvpn-user auth --user $(head -1 $1) --password $(tail -1 $1)

@ -0,0 +1,3 @@
#!/usr/bin/env bash
env CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -ldflags='-linkmode external -extldflags "-static" -s -w' -o openvpn-user

@ -0,0 +1,14 @@
module openvpn-user
go 1.14
require (
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
github.com/alecthomas/units v0.0.0-20201120081800-1786d5ef83d4 // indirect
github.com/iamacarpet/go-sqlite3-dynamic v0.0.0-20190515092955-345069c6d7b9
github.com/mattn/go-sqlite3 v1.14.6
github.com/notti/nocgo v0.0.0-20190619201224-fc443047424c // indirect
github.com/stretchr/testify v1.7.0 // indirect
golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad
gopkg.in/alecthomas/kingpin.v2 v2.2.6
)

@ -0,0 +1,33 @@
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20201120081800-1786d5ef83d4 h1:EBTWhcAX7rNQ80RLwLCpHZBBrJuzallFHnF+yMXo928=
github.com/alecthomas/units v0.0.0-20201120081800-1786d5ef83d4/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/iamacarpet/go-sqlite3-dynamic v0.0.0-20190515092955-345069c6d7b9 h1:MDZ6mJ7Ouz9lSwLtD7v2QeDlbdL6rONTAJRNEQqRYC0=
github.com/iamacarpet/go-sqlite3-dynamic v0.0.0-20190515092955-345069c6d7b9/go.mod h1:HSsZaV17NZLgfHsNz3wzjE66Gd2EGlF8OuC0DdPpgPk=
github.com/mattn/go-sqlite3 v1.14.6 h1:dNPt6NO46WmLVt2DLNpwczCmdV5boIZ6g/tlDrlRUbg=
github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
github.com/notti/nocgo v0.0.0-20190619201224-fc443047424c h1:3fTZ9+GLtn9eqKC1RGLojMG7St2WsskOeGXKFEhNTlo=
github.com/notti/nocgo v0.0.0-20190619201224-fc443047424c/go.mod h1:kJHUidcvEI83gsDlB+I58aaOuzvJmPfbqrqYjTqmdHA=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/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/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

@ -0,0 +1,212 @@
package main
import (
"database/sql"
"fmt"
_ "github.com/mattn/go-sqlite3"
"golang.org/x/crypto/bcrypt"
"gopkg.in/alecthomas/kingpin.v2"
"os"
"text/tabwriter"
)
var (
dbPath = kingpin.Flag("db.path", "path do openvpn-user db").Default("./openvpn-user.db").String()
dbInitCommand = kingpin.Command("db-init", "Init db.")
dbMigrateCommand = kingpin.Command("db-migrate", "STUB: Migrate db.")
createCommand = kingpin.Command("create", "Create user.")
createCommandUserFlag = createCommand.Flag("user", "Username.").Required().String()
createCommandPasswordFlag = createCommand.Flag("password", "Password.").Required().String()
deleteCommand = kingpin.Command("delete", "Delete user.")
deleteCommandUserFlag = deleteCommand.Flag("user", "Username.").Required().String()
revokeCommand = kingpin.Command("revoke", "Revoke user.")
revokeCommandUserFlag = revokeCommand.Flag("user", "Username.").Required().String()
restoreCommand = kingpin.Command("restore", "Restore user.")
restoreCommandUserFlag = restoreCommand.Flag("user", "Username.").Required().String()
listCommand = kingpin.Command("list", "List active users.")
listAll = listCommand.Flag("all", "Show all users include revoked and deleted.").Default("false").Bool()
authCommand = kingpin.Command("auth", "Auth user.")
authCommandUserFlag = authCommand.Flag("user", "Username.").Required().String()
authCommandPasswordFlag = authCommand.Flag("password", "Password.").Required().String()
changePasswordCommand = kingpin.Command("change-password", "Change password")
changePasswordCommandUserFlag = changePasswordCommand.Flag("user", "Username.").Required().String()
changePasswordCommandPasswordFlag = changePasswordCommand.Flag("password", "Password.").Required().String()
//debug = kingpin.Flag("debug", "Enable debug mode.").Default("false").Bool()
//verbose = kingpin.Flag("verbose", "Enable verbose mode.").Default("false").Bool()
)
type User struct {
id int64
name string
password string
revoked bool
deleted bool
}
func main() {
switch kingpin.Parse() {
case createCommand.FullCommand():
createUser(*createCommandUserFlag, *createCommandPasswordFlag)
case deleteCommand.FullCommand():
deleteUser(*deleteCommandUserFlag)
case revokeCommand.FullCommand():
revokedUser(*revokeCommandUserFlag)
case restoreCommand.FullCommand():
restoreUser(*restoreCommandUserFlag)
case listCommand.FullCommand():
printUsers()
case authCommand.FullCommand():
authUser(*authCommandUserFlag, *authCommandPasswordFlag)
case changePasswordCommand.FullCommand():
changeUserPassword(*changePasswordCommandUserFlag, *changePasswordCommandPasswordFlag)
case dbInitCommand.FullCommand():
initDb()
case dbMigrateCommand.FullCommand():
migrateDb()
}
}
func getDb() *sql.DB {
db, err := sql.Open("sqlite3", *dbPath)
checkErr(err)
if db == nil {
panic("db is nil")
}
return db
}
func initDb() {
// boolean fields are integer because of sqlite does not support boolean: 1 = true, 0 = false
_, err := getDb().Exec("CREATE TABLE IF NOT EXISTS users(id integer not null primary key autoincrement, username string UNIQUE, password string, revoked integer default 0, deleted integer default 0)")
checkErr(err)
fmt.Printf("Database initialized at %s\n", *dbPath)
}
func migrateDb() {
fmt.Println("STUB: Migrations are up to date")
}
func createUser(username, password string) {
if !checkUserExistent(username) {
hash, _ := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost)
_, err := getDb().Exec("INSERT INTO users(username, password) VALUES ($1, $2)", username, string(hash))
checkErr(err)
fmt.Printf("User %s created\n", username)
}
}
func deleteUser(username string) {
_, err := getDb().Exec("UPDATE users SET deleted = 1 WHERE username = $1", username)
checkErr(err)
fmt.Printf("User %s deleted\n", username)
}
func revokedUser(username string) {
// TODO: ignore deleted user
_, err := getDb().Exec("UPDATE users SET revoked = 1 WHERE username = $1", username)
checkErr(err)
fmt.Printf("User %s revoked\n", username)
}
func restoreUser(username string) {
// TODO: ignore deleted user
_, err := getDb().Exec("UPDATE users SET revoked = 0 WHERE username = $1", username)
checkErr(err)
fmt.Printf("User %s restored\n", username)
}
func checkUserExistent(username string) bool {
// we need to check if there is already such a user
var c int
_ = getDb().QueryRow("SELECT count(*) FROM users WHERE username = $1", username).Scan(&c)
if c == 1 {
fmt.Printf("WARNING: User %s already registered\n", username)
return true
} else {
return false
}
}
func listUsers() []User {
condition := "WHERE deleted = 0 AND revoked = 0"
var users []User
if *listAll {
condition = ""
}
query := "SELECT * FROM users " + condition
rows, err := getDb().Query(query)
checkErr(err)
for rows.Next() {
u := User{}
err := rows.Scan(&u.id, &u.name, &u.password, &u.revoked, &u.deleted)
if err != nil {
fmt.Println(err)
continue
}
users = append(users, u)
}
return users
}
func printUsers() {
ul := listUsers()
if len(ul) > 0 {
w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', tabwriter.TabIndent|tabwriter.Debug)
_, _ = fmt.Fprintln(w, "id\t username\t revoked\t deleted")
for _, u := range ul {
fmt.Fprintf(w, "%d\t %s\t %v\t %v\n", u.id, u.name, u.revoked, u.deleted)
}
_ = w.Flush()
} else {
fmt.Println("No users created yet")
}
}
func changeUserPassword(username, password string) {
hash, _ := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost)
_, err := getDb().Exec("UPDATE users SET password = $1 WHERE username = $2", hash, username)
checkErr(err)
fmt.Println("Password changed")
}
func authUser(username, password string) {
row := getDb().QueryRow("select * from users where username = $1", username)
u := User{}
err := row.Scan(&u.id, &u.name, &u.password, &u.revoked, &u.deleted)
checkErr(err)
if ! u.revoked && ! u.deleted {
err = bcrypt.CompareHashAndPassword([]byte(u.password), []byte(password))
if err != nil {
fmt.Println("Passwords mismatched")
os.Exit(1)
} else {
fmt.Println("Auth successful")
os.Exit(0)
}
}
fmt.Println("Authorization failed")
os.Exit(1)
}
func checkErr(err error) {
if err != nil {
panic(err)
}
}
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