Add common cypherpunks.ru prefix for govpn Go package names

[govpn.git] / src / cypherpunks.ru / govpn / cmd / govpn-verifier / main.go

diff --git a/src/cypherpunks.ru/govpn/cmd/govpn-verifier/main.go b/src/cypherpunks.ru/govpn/cmd/govpn-verifier/main.go
new file mode 100644 (file)
index 0000000..5d59580
--- /dev/null
+++ b/src/cypherpunks.ru/govpn/cmd/govpn-verifier/main.go
@@ -0,0 +1,71 @@
+/*
+GoVPN -- simple secure free software virtual private network daemon
+Copyright (C) 2014-2016 Sergey Matveev <stargrave@stargrave.org>
+
+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 <http://www.gnu.org/licenses/>.
+*/
+
+// Verifier generator and validator for GoVPN VPN daemon.
+package main
+
+import (
+       "bytes"
+       "flag"
+       "fmt"
+       "log"
+
+       "cypherpunks.ru/govpn"
+)
+
+var (
+       keyPath  = flag.String("key", "", "Path to passphrase file")
+       verifier = flag.String("verifier", "", "Optional verifier")
+       mOpt     = flag.Int("m", govpn.DefaultM, "Argon2d memory parameter (KiBs)")
+       tOpt     = flag.Int("t", govpn.DefaultT, "Argon2d iteration parameter")
+       pOpt     = flag.Int("p", govpn.DefaultP, "Argon2d parallelizm parameter")
+       egdPath  = flag.String("egd", "", "Optional path to EGD socket")
+)
+
+func main() {
+       flag.Parse()
+       if *egdPath != "" {
+               govpn.EGDInit(*egdPath)
+       }
+       key, err := govpn.KeyRead(*keyPath)
+       if err != nil {
+               log.Fatalln("Unable to read the key", err)
+       }
+       if *verifier == "" {
+               id := new([govpn.IDSize]byte)
+               if _, err := govpn.Rand.Read(id[:]); err != nil {
+                       log.Fatalln(err)
+               }
+               pid := govpn.PeerId(*id)
+               v := govpn.VerifierNew(*mOpt, *tOpt, *pOpt, &pid)
+               v.PasswordApply(key)
+               fmt.Println(v.LongForm())
+               fmt.Println(v.ShortForm())
+               return
+       }
+       v, err := govpn.VerifierFromString(*verifier)
+       if err != nil {
+               log.Fatalln("Can not decode verifier", err)
+       }
+       if v.Pub == nil {
+               log.Fatalln("Verifier does not contain public key")
+       }
+       pub := *v.Pub
+       v.PasswordApply(key)
+       fmt.Println(bytes.Equal(v.Pub[:], pub[:]))
+}