// 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 . // Command bzzup uploads files to the swarm HTTP API. package main import ( "bytes" "encoding/json" "flag" "fmt" "io" "io/ioutil" "log" "mime" "net/http" "os" "path/filepath" "strings" ) func main() { var ( bzzapiFlag = flag.String("bzzapi", "http://127.0.0.1:8500", "Swarm HTTP endpoint") recursiveFlag = flag.Bool("recursive", false, "Upload directories recursively") manifestFlag = flag.Bool("manifest", true, "Skip automatic manifest upload") ) log.SetOutput(os.Stderr) log.SetFlags(0) flag.Parse() if flag.NArg() != 1 { log.Fatal("need filename as the first and only argument") } var ( file = flag.Arg(0) client = &client{api: *bzzapiFlag} mroot manifest ) fi, err := os.Stat(file) if err != nil { log.Fatal(err) } if fi.IsDir() { if !*recursiveFlag { log.Fatal("argument is a directory and recursive upload is disabled") } mroot, err = client.uploadDirectory(file) } else { mroot, err = client.uploadFile(file, fi) if *manifestFlag { // Wrap the raw file entry in a proper manifest so both hashes get printed. mroot = manifest{Entries: []manifest{mroot}} } } if err != nil { log.Fatalln("upload failed:", err) } if *manifestFlag { hash, err := client.uploadManifest(mroot) if err != nil { log.Fatalln("manifest upload failed:", err) } mroot.Hash = hash } // Print the manifest. This is the only output to stdout. mrootJSON, _ := json.MarshalIndent(mroot, "", " ") fmt.Println(string(mrootJSON)) } // client wraps interaction with the swarm HTTP gateway. type client struct { api string } // manifest is the JSON representation of a swarm manifest. type manifest struct { Hash string `json:"hash,omitempty"` ContentType string `json:"contentType,omitempty"` Path string `json:"path,omitempty"` Entries []manifest `json:"entries,omitempty"` } func (c *client) uploadFile(file string, fi os.FileInfo) (manifest, error) { hash, err := c.uploadFileContent(file, fi) m := manifest{ Hash: hash, ContentType: mime.TypeByExtension(filepath.Ext(fi.Name())), } return m, err } func (c *client) uploadDirectory(dir string) (manifest, error) { dirm := manifest{} prefix := filepath.ToSlash(filepath.Clean(dir)) + "/" err := filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error { if err != nil || fi.IsDir() { return err } if !strings.HasPrefix(path, dir) { return fmt.Errorf("path %s outside directory %s", path, dir) } entry, err := c.uploadFile(path, fi) entry.Path = strings.TrimPrefix(filepath.ToSlash(filepath.Clean(path)), prefix) dirm.Entries = append(dirm.Entries, entry) return err }) return dirm, err } func (c *client) uploadFileContent(file string, fi os.FileInfo) (string, error) { fd, err := os.Open(file) if err != nil { return "", err } defer fd.Close() log.Printf("uploading file %s (%d bytes)", file, fi.Size()) return c.postRaw("application/octet-stream", fi.Size(), fd) } func (c *client) uploadManifest(m manifest) (string, error) { jsm, err := json.Marshal(m) if err != nil { panic(err) } log.Println("uploading manifest") return c.postRaw("application/json", int64(len(jsm)), ioutil.NopCloser(bytes.NewReader(jsm))) } func (c *client) postRaw(mimetype string, size int64, body io.ReadCloser) (string, error) { req, err := http.NewRequest("POST", c.api+"/bzzr:/", body) if err != nil { return "", err } req.Header.Set("content-type", mimetype) req.ContentLength = size resp, err := http.DefaultClient.Do(req) if err != nil { return "", err } defer resp.Body.Close() if resp.StatusCode >= 400 { return "", fmt.Errorf("bad status: %s", resp.Status) } content, err := ioutil.ReadAll(resp.Body) return string(content), err }