func walkItems(ctx context.Context, dag merkledag.DAGService, n *merkledag.ProtoNode, fn walkerFunc, children keyObserver) error {
hdr, err := readHdr(n)
if err != nil {
return err
}
// readHdr guarantees fanout is a safe value
fanout := hdr.GetFanout()
for i, l := range n.Links()[fanout:] {
if err := fn(i, l); err != nil {
return err
}
}
for _, l := range n.Links()[:fanout] {
c := l.Cid
children(c)
if c.Equals(emptyKey) {
continue
}
subtree, err := l.GetNode(ctx, dag)
if err != nil {
return err
}
stpb, ok := subtree.(*merkledag.ProtoNode)
if !ok {
return merkledag.ErrNotProtobuf
}
if err := walkItems(ctx, dag, stpb, fn, children); err != nil {
return err
}
}
return nil
}
func randNode() (*merkledag.ProtoNode, key.Key) {
node := new(merkledag.ProtoNode)
node.SetData(make([]byte, 32))
util.NewTimeSeededRand().Read(node.Data())
k := node.Key()
return node, k
}
func loadSet(ctx context.Context, dag merkledag.DAGService, root *merkledag.ProtoNode, name string, internalKeys keyObserver) ([]*cid.Cid, error) {
l, err := root.GetNodeLink(name)
if err != nil {
return nil, err
}
lnkc := l.Cid
internalKeys(lnkc)
n, err := l.GetNode(ctx, dag)
if err != nil {
return nil, err
}
pbn, ok := n.(*merkledag.ProtoNode)
if !ok {
return nil, merkledag.ErrNotProtobuf
}
var res []*cid.Cid
walk := func(idx int, link *node.Link) error {
res = append(res, link.Cid)
return nil
}
if err := walkItems(ctx, dag, pbn, walk, internalKeys); err != nil {
return nil, err
}
return res, nil
}
func (d *Directory) Mkdir(name string) (*Directory, error) {
d.lock.Lock()
defer d.lock.Unlock()
fsn, err := d.childUnsync(name)
if err == nil {
switch fsn := fsn.(type) {
case *Directory:
return fsn, os.ErrExist
case *File:
return nil, os.ErrExist
default:
return nil, fmt.Errorf("unrecognized type: %#v", fsn)
}
}
ndir := new(dag.ProtoNode)
ndir.SetData(ft.FolderPBData())
_, err = d.dserv.Add(ndir)
if err != nil {
return nil, err
}
err = d.node.AddNodeLinkClean(name, ndir)
if err != nil {
return nil, err
}
dirobj := NewDirectory(d.ctx, name, ndir, d, d.dserv)
d.childDirs[name] = dirobj
return dirobj, nil
}
// newRoot creates a new Root and starts up a republisher routine for it
func NewRoot(parent context.Context, ds dag.DAGService, node *dag.ProtoNode, pf PubFunc) (*Root, error) {
var repub *Republisher
if pf != nil {
repub = NewRepublisher(parent, pf, time.Millisecond*300, time.Second*3)
repub.setVal(node.Cid())
go repub.Run()
}
root := &Root{
node: node,
repub: repub,
dserv: ds,
}
pbn, err := ft.FromBytes(node.Data())
if err != nil {
log.Error("IPNS pointer was not unixfs node")
return nil, err
}
switch pbn.GetType() {
case ft.TDirectory:
root.val = NewDirectory(parent, node.String(), node, root, ds)
case ft.TFile, ft.TMetadata, ft.TRaw:
fi, err := NewFile(node.String(), node, root, ds)
if err != nil {
return nil, err
}
root.val = fi
default:
panic("unrecognized! (NYI)")
}
return root, nil
}
func addLink(ctx context.Context, ds dag.DAGService, root *dag.ProtoNode, childname string, childnd node.Node) (*dag.ProtoNode, error) {
if childname == "" {
return nil, errors.New("cannot create link with no name!")
}
// ensure that the node we are adding is in the dagservice
_, err := ds.Add(childnd)
if err != nil {
return nil, err
}
_ = ds.Remove(root)
// ensure no link with that name already exists
_ = root.RemoveNodeLink(childname) // ignore error, only option is ErrNotFound
if err := root.AddNodeLinkClean(childname, childnd); err != nil {
return nil, err
}
if _, err := ds.Add(root); err != nil {
return nil, err
}
return root, nil
}
func copyDag(nd *dag.ProtoNode, from, to dag.DAGService) error {
_, err := to.Add(nd)
if err != nil {
return err
}
for _, lnk := range nd.Links() {
child, err := lnk.GetNode(context.Background(), from)
if err != nil {
if err == dag.ErrNotFound {
// not found means we didnt modify it, and it should
// already be in the target datastore
continue
}
return err
}
childpb, ok := child.(*dag.ProtoNode)
if !ok {
return dag.ErrNotProtobuf
}
err = copyDag(childpb, from, to)
if err != nil {
return err
}
}
return nil
}
func AddMetadataTo(n *core.IpfsNode, skey string, m *ft.Metadata) (string, error) {
c, err := cid.Decode(skey)
if err != nil {
return "", err
}
nd, err := n.DAG.Get(n.Context(), c)
if err != nil {
return "", err
}
mdnode := new(dag.ProtoNode)
mdata, err := ft.BytesForMetadata(m)
if err != nil {
return "", err
}
mdnode.SetData(mdata)
if err := mdnode.AddNodeLinkClean("file", nd); err != nil {
return "", err
}
nk, err := n.DAG.Add(mdnode)
if err != nil {
return "", err
}
return nk.String(), nil
}
func ExportTar(ctx context.Context, root *dag.ProtoNode, ds dag.DAGService) (io.Reader, error) {
if string(root.Data()) != "ipfs/tar" {
return nil, errors.New("not an IPFS tarchive")
}
return &tarReader{
links: root.Links(),
ds: ds,
ctx: ctx,
}, nil
}
// converts the Node object into a real dag.ProtoNode
func deserializeNode(nd *Node, dataFieldEncoding string) (*dag.ProtoNode, error) {
dagnode := new(dag.ProtoNode)
switch dataFieldEncoding {
case "text":
dagnode.SetData([]byte(nd.Data))
case "base64":
data, _ := base64.StdEncoding.DecodeString(nd.Data)
dagnode.SetData(data)
default:
return nil, fmt.Errorf("Unkown data field encoding")
}
dagnode.SetLinks(make([]*node.Link, len(nd.Links)))
for i, link := range nd.Links {
c, err := cid.Decode(link.Hash)
if err != nil {
return nil, err
}
dagnode.Links()[i] = &node.Link{
Name: link.Name,
Size: link.Size,
Cid: c,
}
}
return dagnode, nil
}
// NewUnixfsNodeFromDag reconstructs a Unixfs node from a given dag node
func NewUnixfsNodeFromDag(nd *dag.ProtoNode) (*UnixfsNode, error) {
mb, err := ft.FSNodeFromBytes(nd.Data())
if err != nil {
return nil, err
}
return &UnixfsNode{
node: nd,
ufmt: mb,
}, nil
}
func PrintDag(nd *mdag.ProtoNode, ds mdag.DAGService, indent int) {
pbd, err := ft.FromBytes(nd.Data())
if err != nil {
panic(err)
}
for i := 0; i < indent; i++ {
fmt.Print(" ")
}
fmt.Printf("{size = %d, type = %s, children = %d", pbd.GetFilesize(), pbd.GetType().String(), len(pbd.GetBlocksizes()))
if len(nd.Links()) > 0 {
fmt.Println()
}
for _, lnk := range nd.Links() {
child, err := lnk.GetNode(context.Background(), ds)
if err != nil {
panic(err)
}
PrintDag(child.(*mdag.ProtoNode), ds, indent+1)
}
if len(nd.Links()) > 0 {
for i := 0; i < indent; i++ {
fmt.Print(" ")
}
}
fmt.Println("}")
}
func (e *Editor) rmLink(ctx context.Context, root *dag.ProtoNode, path []string) (*dag.ProtoNode, error) {
if len(path) == 1 {
// base case, remove node in question
err := root.RemoveNodeLink(path[0])
if err != nil {
return nil, err
}
_, err = e.tmp.Add(root)
if err != nil {
return nil, err
}
return root, nil
}
// search for node in both tmp dagstore and source dagstore
nd, err := root.GetLinkedProtoNode(ctx, e.tmp, path[0])
if err == dag.ErrNotFound {
nd, err = root.GetLinkedProtoNode(ctx, e.src, path[0])
}
if err != nil {
return nil, err
}
nnode, err := e.rmLink(ctx, nd, path[1:])
if err != nil {
return nil, err
}
_ = e.tmp.Remove(root)
_ = root.RemoveNodeLink(path[0])
err = root.AddNodeLinkClean(path[0], nnode)
if err != nil {
return nil, err
}
_, err = e.tmp.Add(root)
if err != nil {
return nil, err
}
return root, nil
}
func randNode() (*mdag.ProtoNode, *cid.Cid) {
nd := new(mdag.ProtoNode)
nd.SetData(make([]byte, 32))
util.NewTimeSeededRand().Read(nd.Data())
k := nd.Cid()
return nd, k
}
func writeHdr(n *merkledag.ProtoNode, hdr *pb.Set) error {
hdrData, err := proto.Marshal(hdr)
if err != nil {
return err
}
// make enough space for the length prefix and the marshalled header data
data := make([]byte, binary.MaxVarintLen64, binary.MaxVarintLen64+len(hdrData))
// write the uvarint length of the header data
uvarlen := binary.PutUvarint(data, uint64(len(hdrData)))
// append the actual protobuf data *after* the length value we wrote
data = append(data[:uvarlen], hdrData...)
n.SetData(data)
return nil
}
func ImportTar(r io.Reader, ds dag.DAGService) (*dag.ProtoNode, error) {
tr := tar.NewReader(r)
root := new(dag.ProtoNode)
root.SetData([]byte("ipfs/tar"))
e := dagutil.NewDagEditor(root, ds)
for {
h, err := tr.Next()
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
header := new(dag.ProtoNode)
headerBytes, err := marshalHeader(h)
if err != nil {
return nil, err
}
header.SetData(headerBytes)
if h.Size > 0 {
spl := chunk.NewRabin(tr, uint64(chunk.DefaultBlockSize))
nd, err := importer.BuildDagFromReader(ds, spl)
if err != nil {
return nil, err
}
err = header.AddNodeLinkClean("data", nd)
if err != nil {
return nil, err
}
}
_, err = ds.Add(header)
if err != nil {
return nil, err
}
path := escapePath(h.Name)
err = e.InsertNodeAtPath(context.Background(), path, header, func() *dag.ProtoNode { return new(dag.ProtoNode) })
if err != nil {
return nil, err
}
}
return e.Finalize(ds)
}
func TestAppendSingleBytesToEmpty(t *testing.T) {
ds := mdtest.Mock()
data := []byte("AB")
nd := new(merkledag.ProtoNode)
nd.SetData(ft.FilePBData(nil, 0))
dbp := &h.DagBuilderParams{
Dagserv: ds,
Maxlinks: 4,
}
spl := chunk.SizeSplitterGen(500)
ctx := context.Background()
nnode, err := TrickleAppend(ctx, nd, dbp.New(spl(bytes.NewReader(data[:1]))))
if err != nil {
t.Fatal(err)
}
nnode, err = TrickleAppend(ctx, nnode, dbp.New(spl(bytes.NewReader(data[1:]))))
if err != nil {
t.Fatal(err)
}
fread, err := uio.NewDagReader(ctx, nnode, ds)
if err != nil {
t.Fatal(err)
}
out, err := ioutil.ReadAll(fread)
if err != nil {
t.Fatal(err)
}
fmt.Println(out, data)
err = arrComp(out, data)
if err != nil {
t.Fatal(err)
}
}
func (w *Writer) WriteNode(nd *mdag.ProtoNode, fpath string) error {
pb := new(upb.Data)
if err := proto.Unmarshal(nd.Data(), pb); err != nil {
return err
}
switch pb.GetType() {
case upb.Data_Metadata:
fallthrough
case upb.Data_Directory:
return w.writeDir(nd, fpath)
case upb.Data_Raw:
fallthrough
case upb.Data_File:
return w.writeFile(nd, pb, fpath)
case upb.Data_Symlink:
return writeSymlinkHeader(w.TarW, string(pb.GetData()), fpath)
default:
return ft.ErrUnrecognizedType
}
}
func getPaths(t *testing.T, ipfs *core.IpfsNode, name string, n *dag.ProtoNode) []string {
if len(n.Links()) == 0 {
return []string{name}
}
var out []string
for _, lnk := range n.Links() {
child, err := lnk.GetNode(ipfs.Context(), ipfs.DAG)
if err != nil {
t.Fatal(err)
}
childpb, ok := child.(*dag.ProtoNode)
if !ok {
t.Fatal(dag.ErrNotProtobuf)
}
sub := getPaths(t, ipfs, path.Join(name, lnk.Name), childpb)
out = append(out, sub...)
}
return out
}
func readHdr(n *merkledag.ProtoNode) (*pb.Set, error) {
hdrLenRaw, consumed := binary.Uvarint(n.Data())
if consumed <= 0 {
return nil, errors.New("invalid Set header length")
}
pbdata := n.Data()[consumed:]
if hdrLenRaw > uint64(len(pbdata)) {
return nil, errors.New("impossibly large Set header length")
}
// as hdrLenRaw was <= an int, we now know it fits in an int
hdrLen := int(hdrLenRaw)
var hdr pb.Set
if err := proto.Unmarshal(pbdata[:hdrLen], &hdr); err != nil {
return nil, err
}
if v := hdr.GetVersion(); v != 1 {
return nil, fmt.Errorf("unsupported Set version: %d", v)
}
if uint64(hdr.GetFanout()) > uint64(len(n.Links())) {
return nil, errors.New("impossibly large Fanout")
}
return &hdr, nil
}
func (w *Writer) writeDir(nd *mdag.ProtoNode, fpath string) error {
if err := writeDirHeader(w.TarW, fpath); err != nil {
return err
}
for i, ng := range mdag.GetDAG(w.ctx, w.Dag, nd) {
child, err := ng.Get(w.ctx)
if err != nil {
return err
}
childpb, ok := child.(*mdag.ProtoNode)
if !ok {
return mdag.ErrNotProtobuf
}
npath := path.Join(fpath, nd.Links()[i].Name)
if err := w.WriteNode(childpb, npath); err != nil {
return err
}
}
return nil
}
func (e *Editor) insertNodeAtPath(ctx context.Context, root *dag.ProtoNode, path []string, toinsert node.Node, create func() *dag.ProtoNode) (*dag.ProtoNode, error) {
if len(path) == 1 {
return addLink(ctx, e.tmp, root, path[0], toinsert)
}
nd, err := root.GetLinkedProtoNode(ctx, e.tmp, path[0])
if err != nil {
// if 'create' is true, we create directories on the way down as needed
if err == dag.ErrLinkNotFound && create != nil {
nd = create()
err = nil // no longer an error case
} else if err == dag.ErrNotFound {
// try finding it in our source dagstore
nd, err = root.GetLinkedProtoNode(ctx, e.src, path[0])
}
// if we receive an ErrNotFound, then our second 'GetLinkedNode' call
// also fails, we want to error out
if err != nil {
return nil, err
}
}
ndprime, err := e.insertNodeAtPath(ctx, nd, path[1:], toinsert, create)
if err != nil {
return nil, err
}
_ = e.tmp.Remove(root)
_ = root.RemoveNodeLink(path[0])
err = root.AddNodeLinkClean(path[0], ndprime)
if err != nil {
return nil, err
}
_, err = e.tmp.Add(root)
if err != nil {
return nil, err
}
return root, nil
}
// dagTruncate truncates the given node to 'size' and returns the modified Node
func dagTruncate(ctx context.Context, nd *mdag.ProtoNode, size uint64, ds mdag.DAGService) (*mdag.ProtoNode, error) {
if len(nd.Links()) == 0 {
// TODO: this can likely be done without marshaling and remarshaling
pbn, err := ft.FromBytes(nd.Data())
if err != nil {
return nil, err
}
nd.SetData(ft.WrapData(pbn.Data[:size]))
return nd, nil
}
var cur uint64
end := 0
var modified *mdag.ProtoNode
ndata := new(ft.FSNode)
for i, lnk := range nd.Links() {
child, err := lnk.GetNode(ctx, ds)
if err != nil {
return nil, err
}
childpb, ok := child.(*mdag.ProtoNode)
if !ok {
return nil, err
}
childsize, err := ft.DataSize(childpb.Data())
if err != nil {
return nil, err
}
// found the child we want to cut
if size < cur+childsize {
nchild, err := dagTruncate(ctx, childpb, size-cur, ds)
if err != nil {
return nil, err
}
ndata.AddBlockSize(size - cur)
modified = nchild
end = i
break
}
cur += childsize
ndata.AddBlockSize(childsize)
}
_, err := ds.Add(modified)
if err != nil {
return nil, err
}
nd.SetLinks(nd.Links()[:end])
err = nd.AddNodeLinkClean("", modified)
if err != nil {
return nil, err
}
d, err := ndata.GetBytes()
if err != nil {
return nil, err
}
nd.SetData(d)
// invalidate cache and recompute serialized data
_, err = nd.EncodeProtobuf(true)
if err != nil {
return nil, err
}
return nd, nil
}
func (i *gatewayHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
urlPath := r.URL.Path
ctx, cancel := context.WithCancel(i.node.Context())
defer cancel()
p, err := path.ParsePath(urlPath)
if err != nil {
webError(w, "failed to parse path", err, http.StatusBadRequest)
return
}
c, components, err := path.SplitAbsPath(p)
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, c)
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
}
pbnd, ok := pathNodes[len(pathNodes)-1].(*dag.ProtoNode)
if !ok {
webError(w, "Cannot read non protobuf nodes through gateway", dag.ErrNotProtobuf, http.StatusBadRequest)
return
}
// TODO(cyrptix): assumes len(pathNodes) > 1 - not found is an error above?
err = pbnd.RemoveNodeLink(components[len(components)-1])
if err != nil {
webError(w, "Could not delete link", err, http.StatusBadRequest)
return
}
var newnode *dag.ProtoNode = pbnd
for j := len(pathNodes) - 2; j >= 0; j-- {
if _, err := i.node.DAG.Add(newnode); err != nil {
webError(w, "Could not add node", err, http.StatusInternalServerError)
return
}
pathpb, ok := pathNodes[j].(*dag.ProtoNode)
if !ok {
webError(w, "Cannot read non protobuf nodes through gateway", dag.ErrNotProtobuf, http.StatusBadRequest)
return
}
newnode, err = pathpb.UpdateNodeLink(components[j], newnode)
if err != nil {
webError(w, "Could not update node links", err, http.StatusInternalServerError)
return
}
}
if _, err := i.node.DAG.Add(newnode); err != nil {
webError(w, "Could not add root node", err, http.StatusInternalServerError)
return
}
// Redirect to new path
ncid := newnode.Cid()
i.addUserHeaders(w) // ok, _now_ write user's headers.
w.Header().Set("IPFS-Hash", ncid.String())
http.Redirect(w, r, gopath.Join(ipfsPathPrefix+ncid.String(), path.Join(components[:len(components)-1])), http.StatusCreated)
}
func Diff(ctx context.Context, ds dag.DAGService, a, b *dag.ProtoNode) ([]*Change, error) {
if len(a.Links()) == 0 && len(b.Links()) == 0 {
return []*Change{
&Change{
Type: Mod,
Before: a.Cid(),
After: b.Cid(),
},
}, nil
}
var out []*Change
clean_a := a.Copy().(*dag.ProtoNode)
clean_b := b.Copy().(*dag.ProtoNode)
// strip out unchanged stuff
for _, lnk := range a.Links() {
l, err := b.GetNodeLink(lnk.Name)
if err == nil {
if l.Cid.Equals(lnk.Cid) {
// no change... ignore it
} else {
anode, err := lnk.GetNode(ctx, ds)
if err != nil {
return nil, err
}
bnode, err := l.GetNode(ctx, ds)
if err != nil {
return nil, err
}
anodepb, ok := anode.(*dag.ProtoNode)
if !ok {
return nil, dag.ErrNotProtobuf
}
bnodepb, ok := bnode.(*dag.ProtoNode)
if !ok {
return nil, dag.ErrNotProtobuf
}
sub, err := Diff(ctx, ds, anodepb, bnodepb)
if err != nil {
return nil, err
}
for _, subc := range sub {
subc.Path = path.Join(lnk.Name, subc.Path)
out = append(out, subc)
}
}
clean_a.RemoveNodeLink(l.Name)
clean_b.RemoveNodeLink(l.Name)
}
}
for _, lnk := range clean_a.Links() {
out = append(out, &Change{
Type: Remove,
Path: lnk.Name,
Before: lnk.Cid,
})
}
for _, lnk := range clean_b.Links() {
out = append(out, &Change{
Type: Add,
Path: lnk.Name,
After: lnk.Cid,
})
}
return out, nil
}
// NewEmptyDirectory returns an empty merkledag Node with a folder Data chunk
func NewEmptyDirectory() *mdag.ProtoNode {
nd := new(mdag.ProtoNode)
nd.SetData(format.FolderPBData())
return nd
}
// modifyDag writes the data in 'data' over the data in 'node' starting at 'offset'
// returns the new key of the passed in node and whether or not all the data in the reader
// has been consumed.
func (dm *DagModifier) modifyDag(node *mdag.ProtoNode, offset uint64, data io.Reader) (*cid.Cid, bool, error) {
f, err := ft.FromBytes(node.Data())
if err != nil {
return nil, false, err
}
// If we've reached a leaf node.
if len(node.Links()) == 0 {
n, err := data.Read(f.Data[offset:])
if err != nil && err != io.EOF {
return nil, false, err
}
// Update newly written node..
b, err := proto.Marshal(f)
if err != nil {
return nil, false, err
}
nd := new(mdag.ProtoNode)
nd.SetData(b)
k, err := dm.dagserv.Add(nd)
if err != nil {
return nil, false, err
}
// Hey look! we're done!
var done bool
if n < len(f.Data[offset:]) {
done = true
}
return k, done, nil
}
var cur uint64
var done bool
for i, bs := range f.GetBlocksizes() {
// We found the correct child to write into
if cur+bs > offset {
child, err := node.Links()[i].GetNode(dm.ctx, dm.dagserv)
if err != nil {
return nil, false, err
}
childpb, ok := child.(*mdag.ProtoNode)
if !ok {
return nil, false, mdag.ErrNotProtobuf
}
k, sdone, err := dm.modifyDag(childpb, offset-cur, data)
if err != nil {
return nil, false, err
}
offset += bs
node.Links()[i].Cid = k
// Recache serialized node
_, err = node.EncodeProtobuf(true)
if err != nil {
return nil, false, err
}
if sdone {
// No more bytes to write!
done = true
break
}
offset = cur + bs
}
cur += bs
}
k, err := dm.dagserv.Add(node)
return k, done, err
}
// Recursive call for verifying the structure of a trickledag
func verifyTDagRec(nd *dag.ProtoNode, depth, direct, layerRepeat int, ds dag.DAGService) error {
if depth == 0 {
// zero depth dag is raw data block
if len(nd.Links()) > 0 {
return errors.New("expected direct block")
}
pbn, err := ft.FromBytes(nd.Data())
if err != nil {
return err
}
if pbn.GetType() != ft.TRaw {
return errors.New("Expected raw block")
}
return nil
}
// Verify this is a branch node
pbn, err := ft.FromBytes(nd.Data())
if err != nil {
return err
}
if pbn.GetType() != ft.TFile {
return fmt.Errorf("expected file as branch node, got: %s", pbn.GetType())
}
if len(pbn.Data) > 0 {
return errors.New("branch node should not have data")
}
for i := 0; i < len(nd.Links()); i++ {
childi, err := nd.Links()[i].GetNode(context.TODO(), ds)
if err != nil {
return err
}
childpb, ok := childi.(*dag.ProtoNode)
if !ok {
return fmt.Errorf("cannot operate on non-protobuf nodes")
}
if i < direct {
// Direct blocks
err := verifyTDagRec(childpb, 0, direct, layerRepeat, ds)
if err != nil {
return err
}
} else {
// Recursive trickle dags
rdepth := ((i - direct) / layerRepeat) + 1
if rdepth >= depth && depth > 0 {
return errors.New("Child dag was too deep!")
}
err := verifyTDagRec(childpb, rdepth, direct, layerRepeat, ds)
if err != nil {
return err
}
}
}
return nil
}
func randNode() *merkledag.ProtoNode {
node := new(merkledag.ProtoNode)
node.SetData(make([]byte, 32))
util.NewTimeSeededRand().Read(node.Data())
return node
}
dagnode, err := core.Resolve(req.Context(), nd.Namesys, r, p)
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() {
var linkNode *merkledag.ProtoNode
t := unixfspb.Data_DataType(-1)
linkKey := link.Cid
if ok, err := nd.Blockstore.Has(linkKey); ok && err == nil {
b, err := nd.Blockstore.Get(linkKey)
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
linkNode, err = merkledag.DecodeProtobuf(b.RawData())
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
}
