Beispiel #1
0
func Unpin(n *core.IpfsNode, ctx context.Context, paths []string, recursive bool) ([]key.Key, error) {

	dagnodes := make([]*merkledag.Node, 0)
	for _, fpath := range paths {
		dagnode, err := core.Resolve(ctx, n, path.Path(fpath))
		if err != nil {
			return nil, err
		}
		dagnodes = append(dagnodes, dagnode)
	}

	var unpinned []key.Key
	for _, dagnode := range dagnodes {
		k, _ := dagnode.Key()

		ctx, cancel := context.WithCancel(ctx)
		defer cancel()
		err := n.Pinning.Unpin(ctx, k, recursive)
		if err != nil {
			return nil, err
		}
		unpinned = append(unpinned, k)
	}

	err := n.Pinning.Flush()
	if err != nil {
		return nil, err
	}
	return unpinned, nil
}
Beispiel #2
0
func Pin(n *core.IpfsNode, ctx context.Context, paths []string, recursive bool) ([]key.Key, error) {
	dagnodes := make([]*merkledag.Node, 0)
	for _, fpath := range paths {
		dagnode, err := core.Resolve(ctx, n, path.Path(fpath))
		if err != nil {
			return nil, fmt.Errorf("pin: %s", err)
		}
		dagnodes = append(dagnodes, dagnode)
	}

	var out []key.Key
	for _, dagnode := range dagnodes {
		k, err := dagnode.Key()
		if err != nil {
			return nil, err
		}

		ctx, cancel := context.WithCancel(ctx)
		defer cancel()
		err = n.Pinning.Pin(ctx, dagnode, recursive)
		if err != nil {
			return nil, fmt.Errorf("pin: %s", err)
		}
		out = append(out, k)
	}

	err := n.Pinning.Flush()
	if err != nil {
		return nil, err
	}

	return out, nil
}
Beispiel #3
0
Datei: refs.go Projekt: rht/ipget
func objectsForPaths(ctx context.Context, n *core.IpfsNode, paths []string) ([]*dag.Node, error) {
	objects := make([]*dag.Node, len(paths))
	for i, p := range paths {
		o, err := core.Resolve(ctx, n, path.Path(p))
		if err != nil {
			return nil, err
		}
		objects[i] = o
	}
	return objects, nil
}
Beispiel #4
0
Datei: main.go Projekt: rht/ipget
func cat(ctx context.Context, node *core.IpfsNode, fpath string) (io.Reader, uint64, error) {
	dagnode, err := core.Resolve(ctx, node, path.Path(fpath))
	if err != nil {
		return nil, 0, err
	}

	reader, err := uio.NewDagReader(ctx, dagnode, node.DAG)
	if err != nil {
		return nil, 0, err
	}

	return reader, reader.Size(), nil
}
Beispiel #5
0
func (rp *Republisher) getLastVal(k key.Key) (path.Path, uint64, error) {
	ival, err := rp.ds.Get(k.DsKey())
	if err != nil {
		// not found means we dont have a previously published entry
		return "", 0, errNoEntry
	}

	val := ival.([]byte)
	dhtrec := new(dhtpb.Record)
	err = proto.Unmarshal(val, dhtrec)
	if err != nil {
		return "", 0, err
	}

	// extract published data from record
	e := new(pb.IpnsEntry)
	err = proto.Unmarshal(dhtrec.GetValue(), e)
	if err != nil {
		return "", 0, err
	}
	return path.Path(e.Value), e.GetSequence(), nil
}
Beispiel #6
0
func (i *gatewayHandler) getOrHeadHandler(w http.ResponseWriter, r *http.Request) {
	ctx, cancel := context.WithCancel(i.node.Context())
	defer cancel()

	urlPath := r.URL.Path

	// IPNSHostnameOption might have constructed an IPNS path using the Host header.
	// In this case, we need the original path for constructing redirects
	// and links that match the requested URL.
	// For example, http://example.net would become /ipns/example.net, and
	// the redirects and links would end up as http://example.net/ipns/example.net
	originalUrlPath := urlPath
	ipnsHostname := false
	hdr := r.Header["X-IPNS-Original-Path"]
	if len(hdr) > 0 {
		originalUrlPath = hdr[0]
		ipnsHostname = true
	}

	if i.config.BlockList != nil && i.config.BlockList.ShouldBlock(urlPath) {
		w.WriteHeader(http.StatusForbidden)
		w.Write([]byte("403 - Forbidden"))
		return
	}

	nd, err := core.Resolve(ctx, i.node, path.Path(urlPath))
	if err != nil {
		webError(w, "Path Resolve error", err, http.StatusBadRequest)
		return
	}

	etag := gopath.Base(urlPath)
	if r.Header.Get("If-None-Match") == etag {
		w.WriteHeader(http.StatusNotModified)
		return
	}

	i.addUserHeaders(w) // ok, _now_ write user's headers.
	w.Header().Set("X-IPFS-Path", urlPath)

	// Suborigin header, sandboxes apps from each other in the browser (even
	// though they are served from the same gateway domain).
	//
	// Omited if the path was treated by IPNSHostnameOption(), for example
	// a request for http://example.net/ would be changed to /ipns/example.net/,
	// which would turn into an incorrect Suborigin: example.net header.
	//
	// NOTE: This is not yet widely supported by browsers.
	if !ipnsHostname {
		pathRoot := strings.SplitN(urlPath, "/", 4)[2]
		w.Header().Set("Suborigin", pathRoot)
	}

	dr, err := uio.NewDagReader(ctx, nd, i.node.DAG)
	if err != nil && err != uio.ErrIsDir {
		// not a directory and still an error
		internalWebError(w, err)
		return
	}

	// set these headers _after_ the error, for we may just not have it
	// and dont want the client to cache a 500 response...
	// and only if it's /ipfs!
	// TODO: break this out when we split /ipfs /ipns routes.
	modtime := time.Now()
	if strings.HasPrefix(urlPath, ipfsPathPrefix) {
		w.Header().Set("Etag", etag)
		w.Header().Set("Cache-Control", "public, max-age=29030400")

		// set modtime to a really long time ago, since files are immutable and should stay cached
		modtime = time.Unix(1, 0)
	}

	if err == nil {
		defer dr.Close()
		_, name := gopath.Split(urlPath)
		http.ServeContent(w, r, name, modtime, dr)
		return
	}

	// storage for directory listing
	var dirListing []directoryItem
	// loop through files
	foundIndex := false
	for _, link := range nd.Links {
		if link.Name == "index.html" {
			log.Debugf("found index.html link for %s", urlPath)
			foundIndex = true

			if urlPath[len(urlPath)-1] != '/' {
				// See comment above where originalUrlPath is declared.
				http.Redirect(w, r, originalUrlPath+"/", 302)
				log.Debugf("redirect to %s", originalUrlPath+"/")
				return
			}

			// return index page instead.
			nd, err := core.Resolve(ctx, i.node, path.Path(urlPath+"/index.html"))
			if err != nil {
				internalWebError(w, err)
				return
			}
			dr, err := uio.NewDagReader(ctx, nd, i.node.DAG)
			if err != nil {
				internalWebError(w, err)
				return
			}
			defer dr.Close()

			// write to request
			if r.Method != "HEAD" {
				io.Copy(w, dr)
			}
			break
		}

		// See comment above where originalUrlPath is declared.
		di := directoryItem{humanize.Bytes(link.Size), link.Name, gopath.Join(originalUrlPath, link.Name)}
		dirListing = append(dirListing, di)
	}

	if !foundIndex {
		if r.Method != "HEAD" {
			// construct the correct back link
			// https://github.com/ipfs/go-ipfs/issues/1365
			var backLink string = urlPath

			// don't go further up than /ipfs/$hash/
			pathSplit := strings.Split(backLink, "/")
			switch {
			// keep backlink
			case len(pathSplit) == 3: // url: /ipfs/$hash

			// keep backlink
			case len(pathSplit) == 4 && pathSplit[3] == "": // url: /ipfs/$hash/

			// add the correct link depending on wether the path ends with a slash
			default:
				if strings.HasSuffix(backLink, "/") {
					backLink += "./.."
				} else {
					backLink += "/.."
				}
			}

			// strip /ipfs/$hash from backlink if IPNSHostnameOption touched the path.
			if ipnsHostname {
				backLink = "/"
				if len(pathSplit) > 5 {
					// also strip the trailing segment, because it's a backlink
					backLinkParts := pathSplit[3 : len(pathSplit)-2]
					backLink += strings.Join(backLinkParts, "/") + "/"
				}
			}

			// See comment above where originalUrlPath is declared.
			tplData := listingTemplateData{
				Listing:  dirListing,
				Path:     originalUrlPath,
				BackLink: backLink,
			}
			err := listingTemplate.Execute(w, tplData)
			if err != nil {
				internalWebError(w, err)
				return
			}
		}
	}
}
Beispiel #7
0
func (i *gatewayHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
	urlPath := r.URL.Path
	ctx, cancel := context.WithCancel(i.node.Context())
	defer cancel()

	ipfsNode, err := core.Resolve(ctx, i.node, path.Path(urlPath))
	if err != nil {
		// FIXME HTTP error code
		webError(w, "Could not resolve name", err, http.StatusInternalServerError)
		return
	}

	k, err := ipfsNode.Key()
	if err != nil {
		webError(w, "Could not get key from resolved node", err, http.StatusInternalServerError)
		return
	}

	h, components, err := path.SplitAbsPath(path.FromKey(k))
	if err != nil {
		webError(w, "Could not split path", err, http.StatusInternalServerError)
		return
	}

	tctx, cancel := context.WithTimeout(ctx, time.Minute)
	defer cancel()
	rootnd, err := i.node.Resolver.DAG.Get(tctx, key.Key(h))
	if err != nil {
		webError(w, "Could not resolve root object", err, http.StatusBadRequest)
		return
	}

	pathNodes, err := i.node.Resolver.ResolveLinks(tctx, rootnd, components[:len(components)-1])
	if err != nil {
		webError(w, "Could not resolve parent object", err, http.StatusBadRequest)
		return
	}

	// TODO(cyrptix): assumes len(pathNodes) > 1 - not found is an error above?
	err = pathNodes[len(pathNodes)-1].RemoveNodeLink(components[len(components)-1])
	if err != nil {
		webError(w, "Could not delete link", err, http.StatusBadRequest)
		return
	}

	newnode := pathNodes[len(pathNodes)-1]
	for i := len(pathNodes) - 2; i >= 0; i-- {
		newnode, err = pathNodes[i].UpdateNodeLink(components[i], newnode)
		if err != nil {
			webError(w, "Could not update node links", err, http.StatusInternalServerError)
			return
		}
	}

	if err := i.node.DAG.AddRecursive(newnode); err != nil {
		webError(w, "Could not add recursively new node", err, http.StatusInternalServerError)
		return
	}

	// Redirect to new path
	key, err := newnode.Key()
	if err != nil {
		webError(w, "Could not get key of new node", err, http.StatusInternalServerError)
		return
	}

	i.addUserHeaders(w) // ok, _now_ write user's headers.
	w.Header().Set("IPFS-Hash", key.String())
	http.Redirect(w, r, ipfsPathPrefix+key.String()+"/"+strings.Join(components[:len(components)-1], "/"), http.StatusCreated)
}
Beispiel #8
0
func (i *gatewayHandler) putHandler(w http.ResponseWriter, r *http.Request) {
	// TODO(cryptix): either ask mildred about the flow of this or rewrite it
	webErrorWithCode(w, "Sorry, PUT is bugged right now, closing request", errors.New("handler disabled"), http.StatusInternalServerError)
	return
	urlPath := r.URL.Path
	pathext := urlPath[5:]
	var err error
	if urlPath == ipfsPathPrefix+"QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn/" {
		i.putEmptyDirHandler(w, r)
		return
	}

	var newnode *dag.Node
	if pathext[len(pathext)-1] == '/' {
		newnode = uio.NewEmptyDirectory()
	} else {
		newnode, err = i.newDagFromReader(r.Body)
		if err != nil {
			webError(w, "Could not create DAG from request", err, http.StatusInternalServerError)
			return
		}
	}

	ctx, cancel := context.WithCancel(i.node.Context())
	defer cancel()

	ipfsNode, err := core.Resolve(ctx, i.node, path.Path(urlPath))
	if err != nil {
		// FIXME HTTP error code
		webError(w, "Could not resolve name", err, http.StatusInternalServerError)
		return
	}

	k, err := ipfsNode.Key()
	if err != nil {
		webError(w, "Could not get key from resolved node", err, http.StatusInternalServerError)
		return
	}

	h, components, err := path.SplitAbsPath(path.FromKey(k))
	if err != nil {
		webError(w, "Could not split path", err, http.StatusInternalServerError)
		return
	}

	if len(components) < 1 {
		err = fmt.Errorf("Cannot override existing object")
		webError(w, "http gateway", err, http.StatusBadRequest)
		return
	}

	tctx, cancel := context.WithTimeout(ctx, time.Minute)
	defer cancel()
	// TODO(cryptix): could this be core.Resolve() too?
	rootnd, err := i.node.Resolver.DAG.Get(tctx, key.Key(h))
	if err != nil {
		webError(w, "Could not resolve root object", err, http.StatusBadRequest)
		return
	}

	// resolving path components into merkledag nodes. if a component does not
	// resolve, create empty directories (which will be linked and populated below.)
	pathNodes, err := i.node.Resolver.ResolveLinks(tctx, rootnd, components[:len(components)-1])
	if _, ok := err.(path.ErrNoLink); ok {
		// Create empty directories, links will be made further down the code
		for len(pathNodes) < len(components) {
			pathNodes = append(pathNodes, uio.NewDirectory(i.node.DAG).GetNode())
		}
	} else if err != nil {
		webError(w, "Could not resolve parent object", err, http.StatusBadRequest)
		return
	}

	for i := len(pathNodes) - 1; i >= 0; i-- {
		newnode, err = pathNodes[i].UpdateNodeLink(components[i], newnode)
		if err != nil {
			webError(w, "Could not update node links", err, http.StatusInternalServerError)
			return
		}
	}

	if err := i.node.DAG.AddRecursive(newnode); err != nil {
		webError(w, "Could not add recursively new node", err, http.StatusInternalServerError)
		return
	}

	// Redirect to new path
	key, err := newnode.Key()
	if err != nil {
		webError(w, "Could not get key of new node", err, http.StatusInternalServerError)
		return
	}

	i.addUserHeaders(w) // ok, _now_ write user's headers.
	w.Header().Set("IPFS-Hash", key.String())
	http.Redirect(w, r, ipfsPathPrefix+key.String()+"/"+strings.Join(components, "/"), http.StatusCreated)
}
Beispiel #9
0
Datei: ls.go Projekt: rht/ipget
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}

		// get options early -> exit early in case of error
		if _, _, err := req.Option("headers").Bool(); err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}

		paths := req.Arguments()

		var dagnodes []*merkledag.Node
		for _, fpath := range paths {
			dagnode, err := core.Resolve(req.Context(), node, path.Path(fpath))
			if err != nil {
				res.SetError(err, cmds.ErrNormal)
				return
			}
			dagnodes = append(dagnodes, dagnode)
		}

		output := make([]LsObject, len(req.Arguments()))
		for i, dagnode := range dagnodes {
			output[i] = LsObject{
				Hash:  paths[i],
				Links: make([]LsLink, len(dagnode.Links)),
			}
			for j, link := range dagnode.Links {
				link.Node, err = link.GetNode(req.Context(), node.DAG)
Beispiel #10
0
Note that the "--encoding" option does not affect the output, since the
output is the raw data of the object.
`,
	},

	Arguments: []cmds.Argument{
		cmds.StringArg("key", true, false, "Key of the object to retrieve, in base58-encoded multihash format").EnableStdin(),
	},
	Run: func(req cmds.Request, res cmds.Response) {
		n, err := req.InvocContext().GetNode()
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}

		fpath := path.Path(req.Arguments()[0])
		node, err := core.Resolve(req.Context(), n, fpath)
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}
		res.SetOutput(bytes.NewReader(node.Data))
	},
}

var objectLinksCmd = &cmds.Command{
	Helptext: cmds.HelpText{
		Tagline: "Outputs the links pointed to by the specified object",
		ShortDescription: `
'ipfs object links' is a plumbing command for retreiving the links from
a DAG node. It outputs to stdout, and <key> is a base58 encoded
Beispiel #11
0
Datei: ls.go Projekt: rht/ipget
		node, err := req.InvocContext().GetNode()
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}

		paths := req.Arguments()

		output := LsOutput{
			Arguments: map[string]string{},
			Objects:   map[string]*LsObject{},
		}

		for _, fpath := range paths {
			ctx := req.Context()
			merkleNode, err := core.Resolve(ctx, node, path.Path(fpath))
			if err != nil {
				res.SetError(err, cmds.ErrNormal)
				return
			}

			key, err := merkleNode.Key()
			if err != nil {
				res.SetError(err, cmds.ErrNormal)
				return
			}

			hash := key.B58String()
			output.Arguments[fpath] = hash

			if _, ok := output.Objects[hash]; ok {
Beispiel #12
0
		verif, found, _ := req.Option("resolve").Bool()
		if found {
			popts.verifyExists = verif
		}
		validtime, found, _ := req.Option("lifetime").String()
		if found {
			d, err := time.ParseDuration(validtime)
			if err != nil {
				res.SetError(fmt.Errorf("error parsing lifetime option: %s", err), cmds.ErrNormal)
				return
			}

			popts.pubValidTime = d
		}

		output, err := publish(req.Context(), n, n.PrivateKey, path.Path(pstr), popts)
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}
		res.SetOutput(output)
	},
	Marshalers: cmds.MarshalerMap{
		cmds.Text: func(res cmds.Response) (io.Reader, error) {
			v := res.Output().(*IpnsEntry)
			s := fmt.Sprintf("Published to %s: %s\n", v.Name, v.Value)
			return strings.NewReader(s), nil
		},
	},
	Type: IpnsEntry{},
}