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// Copyright 2016 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
// Command bzzup uploads files to the swarm HTTP API.
package main
import (
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"os/user"
"path"
"path/filepath"
"strconv"
"strings"
"github.com/tangerine-network/go-tangerine/log"
swarm "github.com/tangerine-network/go-tangerine/swarm/api/client"
"github.com/tangerine-network/go-tangerine/cmd/utils"
"gopkg.in/urfave/cli.v1"
)
var upCommand = cli.Command{
Action: upload,
CustomHelpTemplate: helpTemplate,
Name: "up",
Usage: "uploads a file or directory to swarm using the HTTP API",
ArgsUsage: "<file>",
Flags: []cli.Flag{SwarmEncryptedFlag},
Description: "uploads a file or directory to swarm using the HTTP API and prints the root hash",
}
func upload(ctx *cli.Context) {
args := ctx.Args()
var (
bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
recursive = ctx.GlobalBool(SwarmRecursiveFlag.Name)
wantManifest = ctx.GlobalBoolT(SwarmWantManifestFlag.Name)
defaultPath = ctx.GlobalString(SwarmUploadDefaultPath.Name)
fromStdin = ctx.GlobalBool(SwarmUpFromStdinFlag.Name)
mimeType = ctx.GlobalString(SwarmUploadMimeType.Name)
client = swarm.NewClient(bzzapi)
toEncrypt = ctx.Bool(SwarmEncryptedFlag.Name)
autoDefaultPath = false
file string
)
if autoDefaultPathString := os.Getenv(SWARM_AUTO_DEFAULTPATH); autoDefaultPathString != "" {
b, err := strconv.ParseBool(autoDefaultPathString)
if err != nil {
utils.Fatalf("invalid environment variable %s: %v", SWARM_AUTO_DEFAULTPATH, err)
}
autoDefaultPath = b
}
if len(args) != 1 {
if fromStdin {
tmp, err := ioutil.TempFile("", "swarm-stdin")
if err != nil {
utils.Fatalf("error create tempfile: %s", err)
}
defer os.Remove(tmp.Name())
n, err := io.Copy(tmp, os.Stdin)
if err != nil {
utils.Fatalf("error copying stdin to tempfile: %s", err)
} else if n == 0 {
utils.Fatalf("error reading from stdin: zero length")
}
file = tmp.Name()
} else {
utils.Fatalf("Need filename as the first and only argument")
}
} else {
file = expandPath(args[0])
}
if !wantManifest {
f, err := swarm.Open(file)
if err != nil {
utils.Fatalf("Error opening file: %s", err)
}
defer f.Close()
hash, err := client.UploadRaw(f, f.Size, toEncrypt)
if err != nil {
utils.Fatalf("Upload failed: %s", err)
}
fmt.Println(hash)
return
}
stat, err := os.Stat(file)
if err != nil {
utils.Fatalf("Error opening file: %s", err)
}
// define a function which either uploads a directory or single file
// based on the type of the file being uploaded
var doUpload func() (hash string, err error)
if stat.IsDir() {
doUpload = func() (string, error) {
if !recursive {
return "", errors.New("Argument is a directory and recursive upload is disabled")
}
if autoDefaultPath && defaultPath == "" {
defaultEntryCandidate := path.Join(file, "index.html")
log.Debug("trying to find default path", "path", defaultEntryCandidate)
defaultEntryStat, err := os.Stat(defaultEntryCandidate)
if err == nil && !defaultEntryStat.IsDir() {
log.Debug("setting auto detected default path", "path", defaultEntryCandidate)
defaultPath = defaultEntryCandidate
}
}
if defaultPath != "" {
// construct absolute default path
absDefaultPath, _ := filepath.Abs(defaultPath)
absFile, _ := filepath.Abs(file)
// make sure absolute directory ends with only one "/"
// to trim it from absolute default path and get relative default path
absFile = strings.TrimRight(absFile, "/") + "/"
if absDefaultPath != "" && absFile != "" && strings.HasPrefix(absDefaultPath, absFile) {
defaultPath = strings.TrimPrefix(absDefaultPath, absFile)
}
}
return client.UploadDirectory(file, defaultPath, "", toEncrypt)
}
} else {
doUpload = func() (string, error) {
f, err := swarm.Open(file)
if err != nil {
return "", fmt.Errorf("error opening file: %s", err)
}
defer f.Close()
if mimeType != "" {
f.ContentType = mimeType
}
return client.Upload(f, "", toEncrypt)
}
}
hash, err := doUpload()
if err != nil {
utils.Fatalf("Upload failed: %s", err)
}
fmt.Println(hash)
}
// Expands a file path
// 1. replace tilde with users home dir
// 2. expands embedded environment variables
// 3. cleans the path, e.g. /a/b/../c -> /a/c
// Note, it has limitations, e.g. ~someuser/tmp will not be expanded
func expandPath(p string) string {
if i := strings.Index(p, ":"); i > 0 {
return p
}
if i := strings.Index(p, "@"); i > 0 {
return p
}
if strings.HasPrefix(p, "~/") || strings.HasPrefix(p, "~\\") {
if home := homeDir(); home != "" {
p = home + p[1:]
}
}
return path.Clean(os.ExpandEnv(p))
}
func homeDir() string {
if home := os.Getenv("HOME"); home != "" {
return home
}
if usr, err := user.Current(); err == nil {
return usr.HomeDir
}
return ""
}
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