113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/swarm/api"
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swarm "github.com/ethereum/go-ethereum/swarm/api/client"
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"gopkg.in/urfave/cli.v1"
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)
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var downloadCommand = cli.Command{
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Action: download,
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Name: "down",
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Flags: []cli.Flag{SwarmRecursiveFlag, SwarmAccessPasswordFlag},
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Usage: "downloads a swarm manifest or a file inside a manifest",
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ArgsUsage: " <uri> [<dir>]",
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Description: `Downloads a swarm bzz uri to the given dir. When no dir is provided, working directory is assumed. --recursive flag is expected when downloading a manifest with multiple entries.`,
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}
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func download(ctx *cli.Context) {
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log.Debug("downloading content using swarm down")
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args := ctx.Args()
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dest := "."
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switch len(args) {
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case 0:
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utils.Fatalf("Usage: swarm down [options] <bzz locator> [<destination path>]")
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case 1:
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log.Trace(fmt.Sprintf("swarm down: no destination path - assuming working dir"))
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default:
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log.Trace(fmt.Sprintf("destination path arg: %s", args[1]))
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if absDest, err := filepath.Abs(args[1]); err == nil {
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dest = absDest
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} else {
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utils.Fatalf("could not get download path: %v", err)
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}
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}
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var (
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bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
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isRecursive = ctx.Bool(SwarmRecursiveFlag.Name)
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client = swarm.NewClient(bzzapi)
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)
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if fi, err := os.Stat(dest); err == nil {
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if isRecursive && !fi.Mode().IsDir() {
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utils.Fatalf("destination path is not a directory!")
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}
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} else {
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if !os.IsNotExist(err) {
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utils.Fatalf("could not stat path: %v", err)
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}
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}
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uri, err := api.Parse(args[0])
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if err != nil {
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utils.Fatalf("could not parse uri argument: %v", err)
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}
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dl := func(credentials string) error {
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// assume behaviour according to --recursive switch
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if isRecursive {
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if err := client.DownloadDirectory(uri.Addr, uri.Path, dest, credentials); err != nil {
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if err == swarm.ErrUnauthorized {
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return err
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}
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return fmt.Errorf("directory %s: %v", uri.Path, err)
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}
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} else {
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// we are downloading a file
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log.Debug("downloading file/path from a manifest", "uri.Addr", uri.Addr, "uri.Path", uri.Path)
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err := client.DownloadFile(uri.Addr, uri.Path, dest, credentials)
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if err != nil {
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if err == swarm.ErrUnauthorized {
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return err
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}
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return fmt.Errorf("file %s from address: %s: %v", uri.Path, uri.Addr, err)
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}
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}
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return nil
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}
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if passwords := makePasswordList(ctx); passwords != nil {
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password := getPassPhrase(fmt.Sprintf("Downloading %s is restricted", uri), 0, passwords)
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err = dl(password)
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} else {
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err = dl("")
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}
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if err != nil {
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utils.Fatalf("download: %v", err)
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}
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}
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