src/cypherpunks.ru/nncp/cmd/nncp-rm/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2017 Sergey Matveev <stargrave@stargrave.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 // Remove packet from the queue
  20 package main
  21
  22 import (
  23         "flag"
  24         "fmt"
  25         "log"
  26         "os"
  27         "path/filepath"
  28         "strings"
  29
  30         "cypherpunks.ru/nncp"
  31 )
  32
  33 func usage() {
  34         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  35         fmt.Fprintln(os.Stderr, "nncp-rm -- remove packet\n")
  36         fmt.Fprintf(os.Stderr, "Usage: %s [options] -tmp\n", os.Args[0])
  37         fmt.Fprintf(os.Stderr, "       %s [options] -lock\n", os.Args[0])
  38         fmt.Fprintf(os.Stderr, "       %s [options] -node NODE [-rx] [-tx] [-part] [-seen]\n", os.Args[0])
  39         fmt.Fprintf(os.Stderr, "       %s [options] -node NODE -pkt PKT\n", os.Args[0])
  40         fmt.Fprintln(os.Stderr, "Options:")
  41         flag.PrintDefaults()
  42 }
  43
  44 func main() {
  45         var (
  46                 cfgPath   = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  47                 doTmp     = flag.Bool("tmp", false, "Remove all temporary files")
  48                 doLock    = flag.Bool("lock", false, "Remove all lock files")
  49                 nodeRaw   = flag.String("node", "", "Node to remove files in")
  50                 doRx      = flag.Bool("rx", false, "Process received packets")
  51                 doTx      = flag.Bool("tx", false, "Process transfered packets")
  52                 doPart    = flag.Bool("part", false, "Remove only .part files")
  53                 doSeen    = flag.Bool("seen", false, "Remove only .seen files")
  54                 pktRaw    = flag.String("pkt", "", "Packet to remove")
  55                 spoolPath = flag.String("spool", "", "Override path to spool")
  56                 quiet     = flag.Bool("quiet", false, "Print only errors")
  57                 debug     = flag.Bool("debug", false, "Print debug messages")
  58                 version   = flag.Bool("version", false, "Print version information")
  59                 warranty  = flag.Bool("warranty", false, "Print warranty information")
  60         )
  61         flag.Usage = usage
  62         flag.Parse()
  63         if *warranty {
  64                 fmt.Println(nncp.Warranty)
  65                 return
  66         }
  67         if *version {
  68                 fmt.Println(nncp.VersionGet())
  69                 return
  70         }
  71
  72         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, "", *quiet, *debug)
  73         if err != nil {
  74                 log.Fatalln("Error during initialization:", err)
  75         }
  76
  77         if *doTmp {
  78                 err = filepath.Walk(filepath.Join(ctx.Spool, "tmp"), func(path string, info os.FileInfo, err error) error {
  79                         if err != nil {
  80                                 return err
  81                         }
  82                         return os.Remove(info.Name())
  83                 })
  84                 if err != nil {
  85                         log.Fatalln("Error during walking:", err)
  86                 }
  87                 return
  88         }
  89         if *doLock {
  90                 err = filepath.Walk(ctx.Spool, func(path string, info os.FileInfo, err error) error {
  91                         if err != nil {
  92                                 return err
  93                         }
  94                         if strings.HasSuffix(info.Name(), ".lock") {
  95                                 return os.Remove(info.Name())
  96                         }
  97                         return nil
  98                 })
  99                 if err != nil {
 100                         log.Fatalln("Error during walking:", err)
 101                 }
 102                 return
 103         }
 104         if *nodeRaw == "" {
 105                 usage()
 106                 os.Exit(1)
 107         }
 108         node, err := ctx.FindNode(*nodeRaw)
 109         if err != nil {
 110                 log.Fatalln("Invalid -node specified:", err)
 111         }
 112         remove := func(xx nncp.TRxTx) error {
 113                 return filepath.Walk(filepath.Join(ctx.Spool, node.Id.String(), string(xx)), func(path string, info os.FileInfo, err error) error {
 114                         if err != nil {
 115                                 return err
 116                         }
 117                         if *doSeen && strings.HasSuffix(info.Name(), nncp.SeenSuffix) {
 118                                 return os.Remove(info.Name())
 119                         }
 120                         if *doPart && strings.HasSuffix(info.Name(), nncp.PartSuffix) {
 121                                 return os.Remove(info.Name())
 122                         }
 123                         if *pktRaw == "" || filepath.Base(info.Name()) == *pktRaw {
 124                                 return os.Remove(info.Name())
 125                         }
 126                         return nil
 127                 })
 128         }
 129         if *pktRaw != "" || *doRx {
 130                 if err = remove(nncp.TRx); err != nil {
 131                         log.Fatalln("Can not remove:", err)
 132                 }
 133         }
 134         if *pktRaw != "" || *doTx {
 135                 if err = remove(nncp.TTx); err != nil {
 136                         log.Fatalln("Can not remove:", err)
 137                 }
 138         }
 139 }