implement ipns publisher code

core/core.go

@@ -238,5 +238,3 @@ func (n *IpfsNode) PinDagNode(nd *merkledag.Node) error {
 	u.DOut("Pinning node. Currently No-Op\n")
 	return nil
 }
-
-func (n *IpfsNode) SetIpnsEntry() {}

namesys/entry.pb.go

@@ -9,7 +9,7 @@ It is generated from these files:
 	entry.proto
 
 It has these top-level messages:
-	InpsEntry
+	IpnsEntry
 */
 package namesys
 
@@ -20,24 +20,24 @@ import math "math"
 var _ = proto.Marshal
 var _ = math.Inf
 
-type InpsEntry struct {
+type IpnsEntry struct {
 	Value            []byte `protobuf:"bytes,1,req,name=value" json:"value,omitempty"`
 	Signature        []byte `protobuf:"bytes,2,req,name=signature" json:"signature,omitempty"`
 	XXX_unrecognized []byte `json:"-"`
 }
 
-func (m *InpsEntry) Reset()         { *m = InpsEntry{} }
+func (m *IpnsEntry) Reset()         { *m = IpnsEntry{} }
-func (m *InpsEntry) String() string { return proto.CompactTextString(m) }
+func (m *IpnsEntry) String() string { return proto.CompactTextString(m) }
-func (*InpsEntry) ProtoMessage()    {}
+func (*IpnsEntry) ProtoMessage()    {}
 
-func (m *InpsEntry) GetValue() []byte {
+func (m *IpnsEntry) GetValue() []byte {
 	if m != nil {
 		return m.Value
 	}
 	return nil
 }
 
-func (m *InpsEntry) GetSignature() []byte {
+func (m *IpnsEntry) GetSignature() []byte {
 	if m != nil {
 		return m.Signature
 	}

namesys/entry.proto

@@ -1,6 +1,6 @@
 package namesys;
 
-message InpsEntry {
+message IpnsEntry {
 	required bytes value = 1;
 	required bytes signature = 2;
 }

namesys/publisher.go

@@ -0,0 +1,64 @@
+package namesys
+
+import (
+	"code.google.com/p/goprotobuf/proto"
+
+	ci "github.com/jbenet/go-ipfs/crypto"
+	mdag "github.com/jbenet/go-ipfs/merkledag"
+	routing "github.com/jbenet/go-ipfs/routing"
+	u "github.com/jbenet/go-ipfs/util"
+)
+
+type IpnsPublisher struct {
+	dag     *mdag.DAGService
+	routing routing.IpfsRouting
+}
+
+// Publish accepts a keypair and a value,
+func (p *IpnsPublisher) Publish(k ci.PrivKey, value u.Key) error {
+	data, err := CreateEntryData(k, value)
+	if err != nil {
+		return err
+	}
+	pubkey := k.GetPublic()
+	pkbytes, err := pubkey.Bytes()
+	if err != nil {
+		return nil
+	}
+
+	nameb, err := u.Hash(pkbytes)
+	if err != nil {
+		return nil
+	}
+	namekey := u.Key(nameb).Pretty()
+
+	ipnskey, err := u.Hash([]byte("ipns:" + namekey))
+	if err != nil {
+		return err
+	}
+
+	// Store associated public key
+	err = p.routing.PutValue(u.Key(nameb), pkbytes)
+	if err != nil {
+		return err
+	}
+
+	// Store ipns entry at h("ipns:"+b58(h(pubkey)))
+	err = p.routing.PutValue(u.Key(ipnskey), data)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func CreateEntryData(pk ci.PrivKey, val u.Key) ([]byte, error) {
+	entry := new(IpnsEntry)
+	sig, err := pk.Sign([]byte(val))
+	if err != nil {
+		return nil, err
+	}
+	entry.Signature = sig
+	entry.Value = []byte(val)
+	return proto.Marshal(entry)
+}

namesys/resolver.go

@@ -1,6 +1,11 @@
 package namesys
 
-import "strings"
+import (
+	"strings"
+
+	mdag "github.com/jbenet/go-ipfs/merkledag"
+	"github.com/jbenet/go-ipfs/routing"
+)
 
 type MasterResolver struct {
 	dns     *DNSResolver
@@ -8,6 +13,14 @@ type MasterResolver struct {
 	pro     *ProquintResolver
 }
 
+func NewMasterResolver(r routing.IpfsRouting, dag *mdag.DAGService) *MasterResolver {
+	mr := new(MasterResolver)
+	mr.dns = new(DNSResolver)
+	mr.pro = new(ProquintResolver)
+	mr.routing = NewRoutingResolver(r, dag)
+	return mr
+}
+
 func (mr *MasterResolver) Resolve(name string) (string, error) {
 	if strings.Contains(name, ".") {
 		return mr.dns.Resolve(name)

namesys/routing.go

@@ -13,18 +13,17 @@ import (
 	mh "github.com/jbenet/go-multihash"
 )
 
-// RoutingName is the de-serialized name structure that is stored (serialized)
-// in the routing system. Basically, a hash + a digital signature. (serialization can be
-// protobuf, or a simple binary format)
-type RoutingName struct {
-	Hash      u.Key
-	Signature []byte
-}
-
 // RoutingResolver implements NSResolver for the main IPFS SFS-like naming
 type RoutingResolver struct {
 	routing routing.IpfsRouting
-	dag     mdag.DAGService
+	dag     *mdag.DAGService
+}
+
+func NewRoutingResolver(route routing.IpfsRouting, dagservice *mdag.DAGService) *RoutingResolver {
+	return &RoutingResolver{
+		routing: route,
+		dag:     dagservice,
+	}
 }
 
 func (r *RoutingResolver) Resolve(name string) (string, error) {
@@ -47,7 +46,7 @@ func (r *RoutingResolver) Resolve(name string) (string, error) {
 		return "", err
 	}
 
-	entry := new(InpsEntry)
+	entry := new(IpnsEntry)
 	err = proto.Unmarshal(val, entry)
 	if err != nil {
 		return "", err