/
hash.go
95 lines (82 loc) · 2.42 KB
/
hash.go
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/*
Maddy Mail Server - Composable all-in-one email server.
Copyright © 2019-2020 Max Mazurov <fox.cpp@disroot.org>, Maddy Mail Server contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
package main
import (
"errors"
"fmt"
"os"
"strings"
"github.com/foxcpp/maddy/cmd/maddyctl/clitools"
"github.com/foxcpp/maddy/internal/auth/pass_table"
"github.com/urfave/cli"
"golang.org/x/crypto/bcrypt"
)
func hashCommand(ctx *cli.Context) error {
hashFunc := ctx.String("hash")
if hashFunc == "" {
hashFunc = pass_table.DefaultHash
}
hashCompute := pass_table.HashCompute[hashFunc]
if hashCompute == nil {
var funcs []string
for k := range pass_table.HashCompute {
funcs = append(funcs, k)
}
return fmt.Errorf("Error: Unknown hash function, available: %s", strings.Join(funcs, ", "))
}
opts := pass_table.HashOpts{
BcryptCost: bcrypt.DefaultCost,
Argon2Memory: 1024,
Argon2Time: 2,
Argon2Threads: 1,
}
if ctx.IsSet("bcrypt-cost") {
if ctx.Int("bcrypt-cost") > bcrypt.MaxCost {
return errors.New("Error: too big bcrypt cost")
}
if ctx.Int("bcrypt-cost") < bcrypt.MinCost {
return errors.New("Error: too small bcrypt cost")
}
opts.BcryptCost = ctx.Int("bcrypt-cost")
}
if ctx.IsSet("argon2-memory") {
opts.Argon2Memory = uint32(ctx.Int("argon2-memory"))
}
if ctx.IsSet("argon2-time") {
opts.Argon2Memory = uint32(ctx.Int("argon2-time"))
}
if ctx.IsSet("argon2-threads") {
opts.Argon2Threads = uint8(ctx.Int("argon2-threads"))
}
var pass string
if ctx.IsSet("password") {
pass = ctx.String("password")
} else {
var err error
pass, err = clitools.ReadPassword("Password")
if err != nil {
return err
}
}
if pass == "" {
fmt.Fprintln(os.Stderr, "WARNING: This is the hash of empty string")
}
hash, err := hashCompute(opts, pass)
if err != nil {
return err
}
fmt.Println(hashFunc + ":" + hash)
return nil
}