src/cmd/nncp-rm/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2019 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, version 3 of the License.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 // Remove packet from the queue.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "log"
  25         "os"
  26         "path/filepath"
  27         "strings"
  28
  29         "go.cypherpunks.ru/nncp/v5"
  30 )
  31
  32 func usage() {
  33         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  34         fmt.Fprintf(os.Stderr, "nncp-rm -- remove packet\n\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options] -tmp\n", os.Args[0])
  36         fmt.Fprintf(os.Stderr, "       %s [options] -lock\n", os.Args[0])
  37         fmt.Fprintf(os.Stderr, "       %s [options] -node NODE -part\n", os.Args[0])
  38         fmt.Fprintf(os.Stderr, "       %s [options] -node NODE -seen\n", os.Args[0])
  39         fmt.Fprintf(os.Stderr, "       %s [options] -node NODE {-rx|-tx}\n", os.Args[0])
  40         fmt.Fprintf(os.Stderr, "       %s [options] -node NODE -pkt PKT\n", os.Args[0])
  41         fmt.Fprintln(os.Stderr, "Options:")
  42         flag.PrintDefaults()
  43 }
  44
  45 func main() {
  46         var (
  47                 cfgPath   = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  48                 doTmp     = flag.Bool("tmp", false, "Remove all temporary files")
  49                 doLock    = flag.Bool("lock", false, "Remove all lock files")
  50                 nodeRaw   = flag.String("node", "", "Node to remove files in")
  51                 doRx      = flag.Bool("rx", false, "Process received packets")
  52                 doTx      = flag.Bool("tx", false, "Process transfered packets")
  53                 doPart    = flag.Bool("part", false, "Remove only .part files")
  54                 doSeen    = flag.Bool("seen", false, "Remove only .seen files")
  55                 pktRaw    = flag.String("pkt", "", "Packet to remove")
  56                 spoolPath = flag.String("spool", "", "Override path to spool")
  57                 quiet     = flag.Bool("quiet", false, "Print only errors")
  58                 debug     = flag.Bool("debug", false, "Print debug messages")
  59                 version   = flag.Bool("version", false, "Print version information")
  60                 warranty  = flag.Bool("warranty", false, "Print warranty information")
  61         )
  62         flag.Usage = usage
  63         flag.Parse()
  64         if *warranty {
  65                 fmt.Println(nncp.Warranty)
  66                 return
  67         }
  68         if *version {
  69                 fmt.Println(nncp.VersionGet())
  70                 return
  71         }
  72
  73         ctx, err := nncp.CtxFromCmdline(*cfgPath, *spoolPath, "", *quiet, *debug)
  74         if err != nil {
  75                 log.Fatalln("Error during initialization:", err)
  76         }
  77         ctx.Umask()
  78
  79         if *doTmp {
  80                 err = filepath.Walk(filepath.Join(ctx.Spool, "tmp"), func(path string, info os.FileInfo, err error) error {
  81                         if err != nil {
  82                                 return err
  83                         }
  84                         if info.IsDir() {
  85                                 return nil
  86                         }
  87                         ctx.LogI("nncp-rm", nncp.SDS{"file": path}, "")
  88                         return os.Remove(path)
  89                 })
  90                 if err != nil {
  91                         log.Fatalln("Error during walking:", err)
  92                 }
  93                 return
  94         }
  95         if *doLock {
  96                 err = filepath.Walk(ctx.Spool, func(path string, info os.FileInfo, err error) error {
  97                         if err != nil {
  98                                 return err
  99                         }
 100                         if info.IsDir() {
 101                                 return nil
 102                         }
 103                         if strings.HasSuffix(info.Name(), ".lock") {
 104                                 ctx.LogI("nncp-rm", nncp.SDS{"file": path}, "")
 105                                 return os.Remove(path)
 106                         }
 107                         return nil
 108                 })
 109                 if err != nil {
 110                         log.Fatalln("Error during walking:", err)
 111                 }
 112                 return
 113         }
 114         if *nodeRaw == "" {
 115                 usage()
 116                 os.Exit(1)
 117         }
 118         node, err := ctx.FindNode(*nodeRaw)
 119         if err != nil {
 120                 log.Fatalln("Invalid -node specified:", err)
 121         }
 122         remove := func(xx nncp.TRxTx) error {
 123                 return filepath.Walk(filepath.Join(ctx.Spool, node.Id.String(), string(xx)), func(path string, info os.FileInfo, err error) error {
 124                         if err != nil {
 125                                 return err
 126                         }
 127                         if info.IsDir() {
 128                                 return nil
 129                         }
 130                         if *doSeen && strings.HasSuffix(info.Name(), nncp.SeenSuffix) {
 131                                 ctx.LogI("nncp-rm", nncp.SDS{"file": path}, "")
 132                                 return os.Remove(path)
 133                         }
 134                         if *doPart && strings.HasSuffix(info.Name(), nncp.PartSuffix) {
 135                                 ctx.LogI("nncp-rm", nncp.SDS{"file": path}, "")
 136                                 return os.Remove(path)
 137                         }
 138                         if *pktRaw != "" && filepath.Base(info.Name()) == *pktRaw {
 139                                 ctx.LogI("nncp-rm", nncp.SDS{"file": path}, "")
 140                                 return os.Remove(path)
 141                         }
 142                         if !*doSeen &&
 143                                 !*doPart &&
 144                                 (*doRx || *doTx) &&
 145                                 ((*doRx && xx == nncp.TRx) || (*doTx && xx == nncp.TTx)) {
 146                                 ctx.LogI("nncp-rm", nncp.SDS{"file": path}, "")
 147                                 return os.Remove(path)
 148                         }
 149                         return nil
 150                 })
 151         }
 152         if *pktRaw != "" || *doRx || *doSeen || *doPart {
 153                 if err = remove(nncp.TRx); err != nil {
 154                         log.Fatalln("Can not remove:", err)
 155                 }
 156         }
 157         if *pktRaw != "" || *doTx {
 158                 if err = remove(nncp.TTx); err != nil {
 159                         log.Fatalln("Can not remove:", err)
 160                 }
 161         }
 162 }