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magma.go
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magma.go
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package main
import (
"errors"
"fmt"
"log"
"net/http"
"os"
"sync"
"gopkg.in/matm/scytale.v1"
)
func walk(path string, info os.FileInfo, current, total int) error {
log.Printf("Adding %s [%d/%d]\n", path, current, total)
return nil
}
type Magma struct {
sync.Mutex
zip *scytale.ZipArchive
}
const emptyPassword = ""
func NewMagma() *Magma {
m := new(Magma)
m.zip = scytale.NewZipArchive(emptyPassword)
return m
}
type NoArgs struct{}
type ExitReply struct {
Message string
}
// Exit terminates the process.
func (s *Magma) Exit(r *http.Request, args *NoArgs, reply *ExitReply) error {
defer os.Exit(0)
// Stops any processing
s.zip.Cancel()
log.Println("Exiting...")
return nil
}
type CreateArchiveArgs struct {
Password string
OutputName string
Files []string
}
type CreateArchiveReply struct {
Message string
}
func (s *Magma) CreateArchive(r *http.Request, args *CreateArchiveArgs, reply *ExitReply) error {
if args.Password == "" {
return errors.New("empty password")
}
if args.OutputName == "" {
return errors.New("missing output name")
}
if len(args.Files) == 0 {
return errors.New("empty file set")
}
s.zip.SetPassword(args.Password)
if err := s.zip.Create(args.OutputName, args.Files, walk); err != nil {
return err
}
reply.Message = fmt.Sprintf("Archive %s created successfully.", args.OutputName)
return nil
}
type ExtractAllArgs struct {
Archive string
Password string
OutputDir string
}
func (s *Magma) ExtractAll(r *http.Request, args *ExtractAllArgs, reply *ExitReply) error {
if args.Password == "" {
return errors.New("empty password")
}
if args.Archive == "" {
return errors.New("missing archive name")
}
if args.OutputDir == "" {
return errors.New("missing output directory")
}
s.zip.SetPassword(args.Password)
if err := s.zip.ExtractAll(args.Archive, args.OutputDir); err != nil {
return err
}
reply.Message = fmt.Sprintf("All files extracted.")
return nil
}
type ExtractAtArgs struct {
ExtractAllArgs
Pos int
}
func (s *Magma) ExtractAt(r *http.Request, args *ExtractAtArgs, reply *ExitReply) error {
if args.Password == "" {
return errors.New("empty password")
}
if args.Archive == "" {
return errors.New("missing archive name")
}
if args.OutputDir == "" {
return errors.New("missing output directory")
}
s.zip.SetPassword(args.Password)
if err := s.zip.ExtractAt(args.Pos, args.Archive, args.OutputDir); err != nil {
return err
}
reply.Message = fmt.Sprintf("File at pos %d extracted.", args.Pos)
return nil
}