main.go

   1 // Main file for nsscash
   2
   3 // Copyright (C) 2019  Simon Ruderich
   4 //
   5 // This program is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU Affero General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU Affero General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Affero General Public License
  16 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17
  18 package main
  19
  20 import (
  21         "bytes"
  22         "flag"
  23         "fmt"
  24         "io/ioutil"
  25         "log"
  26         "os"
  27 )
  28
  29 func main() {
  30         flag.Usage = func() {
  31                 fmt.Fprintf(os.Stderr,
  32                         "usage: %[1]s [options] fetch <config>\n"+
  33                                 "usage: %[1]s [options] convert <type> <src> <dst>\n"+
  34                                 "",
  35                         os.Args[0])
  36                 flag.PrintDefaults()
  37         }
  38         flag.Parse()
  39
  40         args := flag.Args()
  41         if len(args) == 0 {
  42                 flag.Usage()
  43                 os.Exit(1)
  44         }
  45
  46         switch args[0] {
  47         case "fetch":
  48                 if len(args) != 2 {
  49                         break
  50                 }
  51
  52                 cfg, err := LoadConfig(args[1])
  53                 if err != nil {
  54                         log.Fatal(err)
  55                 }
  56                 state, err := LoadState(cfg.StatePath)
  57                 if err != nil {
  58                         log.Fatal(err)
  59                 }
  60                 err = handleFiles(cfg, state)
  61                 if err != nil {
  62                         log.Fatal(err)
  63                 }
  64                 err = WriteStateIfChanged(cfg.StatePath, state)
  65                 if err != nil {
  66                         log.Fatal(err)
  67                 }
  68                 return
  69
  70         case "convert":
  71                 if len(args) != 4 {
  72                         break
  73                 }
  74
  75                 var t FileType
  76                 err := t.UnmarshalText([]byte(args[1]))
  77                 if err != nil {
  78                         log.Fatal(err)
  79                 }
  80
  81                 src, err := ioutil.ReadFile(args[2])
  82                 if err != nil {
  83                         log.Fatal(err)
  84                 }
  85                 var x bytes.Buffer
  86                 if t == FileTypePlain {
  87                         x.Write(src)
  88                 } else if t == FileTypePasswd {
  89                         pws, err := ParsePasswds(bytes.NewReader(src))
  90                         if err != nil {
  91                                 log.Fatal(err)
  92                         }
  93                         err = SerializePasswds(&x, pws)
  94                         if err != nil {
  95                                 log.Fatal(err)
  96                         }
  97                 } else if t == FileTypeGroup {
  98                         grs, err := ParseGroups(bytes.NewReader(src))
  99                         if err != nil {
 100                                 log.Fatal(err)
 101                         }
 102                         err = SerializeGroups(&x, grs)
 103                         if err != nil {
 104                                 log.Fatal(err)
 105                         }
 106                 } else {
 107                         log.Fatalf("unsupported file type %v", t)
 108                 }
 109
 110                 // We must create the file first or deployFile() will abort
 111                 f, err := os.Create(args[3])
 112                 if err != nil {
 113                         log.Fatal(err)
 114                 }
 115                 f.Close()
 116
 117                 err = deployFile(&File{
 118                         Type: t,
 119                         Url:  args[2],
 120                         Path: args[3],
 121                         body: x.Bytes(),
 122                 })
 123                 if err != nil {
 124                         log.Fatal(err)
 125                 }
 126                 return
 127         }
 128
 129         flag.Usage()
 130         os.Exit(1)
 131 }