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swarm/storage/mru: Client-side MRU signatures (#784)

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* swarm/storage/mru: Add embedded publickey and remove ENS dep

This commit breaks swarm, swarm/api...
but tests in swarm/storage/mru pass

* swarm: Refactor swarm, swarm/api to mru changes, make tests pass

* swarm/storage/mru: Remove self from recv, remove test ens vldtr

* swarm/storage/mru: Remove redundant test, expose ResourceHash mthd

* swarm/storage/mru: Make HeaderGetter mandatory + godoc fixes

* swarm/storage: Remove validator prefix for metadata chunk

* swarm/storage/mru: Use Address instead of PublicKey

* swarm/storage/mru: Change index from name to metadata chunk addr

* swarm/storage/mru: Refactor swarm/api/... to MRU index changes

* swarm/storage/mru: Refactor cleanup

* swarm/storage/mru: Rebase cleanup

* swarm: Use constructor for GenericSigner MRU in swarm.go

* swarm/storage: Change to BMTHash for MRU hashing

* swarm/storage: Reduce loglevel on chunk validator logs

* swarm/storage/mru: Delint

* swarm: MRU Rebase cleanup

* swarm/storage/mru: client-side mru signatures

Rebase to PR #668 and fix all conflicts

* swarm/storage/mru:  refactor and documentation

* swarm/resource/mru: error-checking  tests for parseUpdate/newUpdateChunk

* swarm/storage/mru: Added resourcemetadata tests

* swarm/storage/mru: Added tests  for UpdateRequest

* swarm/storage/mru: more test coverage for UpdateRequest and comments

* swarm/storage/mru: Avoid fake chunks in parseUpdate()

* swarm/storage/mru: Documented resource.go extensively

moved some functions where they make most sense

* swarm/storage/mru: increase test coverage for UpdateRequest and

variable name changes throughout to increase consistency

* swarm/storage/mru: moved default timestamp to NewCreateRequest-

* swarm/storage/mru: lookup refactor

* swarm/storage/mru: added comments and renamed raw flag to rawmru

* swarm/storage/mru: fix receiver typo

* swarm/storage/mru: refactored update chunk new/create

* swarm/storage/mru:  refactored signature digest to avoid malleability

* swarm/storage/mru: optimize update data serialization

* swarm/storage/mru: refactor and cleanup

* swarm/storage/mru: add timestamp struct and serialization

* swarm/storage/mru: fix lint error and mark some old code for deletion

* swarm/storage/mru: remove unnecessary variable

* swarm/storage/mru: Added more comments throughout

* swarm/storage/mru: Refactored metadata chunk layout + extensive error...

* swarm/storage/mru: refactor cli parser
Changed resource info output to JSON

* swarm/storage/mru: refactor serialization for extensibility

refactored error messages to NewErrorf

* swarm/storage/mru: Moved Signature to resource_sign.
Check Sign errors in server tests

* swarm/storage/mru: Remove isSafeName() checks

* swarm/storage/mru: scrubbed off all references to "block" for time

* swarm/storage/mru: removed superfluous isSynced() call.

* swarm/storage/mru: remove isMultihash() and ToSafeName functions

* swarm/storage/mru: various fixes and comments

* swarm/storage/mru: decoupled cli for independent create/update
* Made resource name optional
* Removed unused LookupPrevious

* swarm/storage/mru: Decoupled resource create / update & refactor

* swarm/storage/mru: Fixed some comments as per issues raised in PR #743

* swarm/storage/mru: Cosmetic changes as per #743 comments

* swarm/storage/mru: refct request encoder/decoder > marshal/unmarshal

* swarm/storage/mru: Cosmetic changes as per review in #748

* swarm/storage/mru: removed timestamp proof placeholder

* swarm/storage/mru: cosmetic/doc/fixes changes as per comments in #704

* swarm/storage/mru: removed unnecessary check in Handler.update

* swarm/storage/mru: Implemented Marshaler/Unmarshaler iface in Request

* swarm/storage/mru: Fixed linter error

* swarm/storage/mru: removed redundant address in signature digest

* swarm/storage/mru: fixed bug: LookupLatestVersionInPeriod not working

* swarm/storage/mru: Unfold Request creation API for create or update+create
set common time source for mru package

* swarm/api/http: fix HandleGetResource error variable shadowed
when requesting a resource that does not exist

* swarm/storage/mru: Add simple check to detect duplicate updates

* swarm/storage/mru: moved Multihash() to the right place.

* cmd/swarm: remove unneeded clientaccountmanager.go

* swarm/storage/mru: Changed some comments as per reviews in #784

* swarm/storage/mru: Made SignedResourceUpdate.GetDigest() public

* swarm/storage/mru: cosmetic changes as per comments in #784

* cmd/swarm: Inverted --multihash flag default

* swarm/storage/mru: removed Verify from SignedResourceUpdate.fromChunk

* swarm/storage/mru: Moved validation code out of serializer
Cosmetic / comment changes

* swarm/storage/mru: Added unit tests for UpdateLookup

* swarm/storage/mru: Increased coverage of metadata serialization

* swarm/storage/mru: Increased test coverage of updateHeader serializers

* swarm/storage/mru: Add resourceUpdate serializer test
This commit is contained in:
Javier Peletier
2018-07-21 21:49:36 +02:00
committed by Anton Evangelatov
parent 0647c4de7b
commit 427316a707
28 changed files with 3539 additions and 1571 deletions
Download Patch File Download Diff File Expand all files Collapse all files

164
swarm/api/http/server.go
View File

@ -38,7 +38,6 @@ import (
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/log"
@ -518,9 +517,8 @@ func resourcePostMode(path string) (isRaw bool, frequency uint64, err error) {
// If the latter is used, a subsequent bzz:// GET call to the manifest of the resource will return
// the page that the multihash is pointing to, as if it held a normal swarm content manifest
//
// The resource name will be verbatim what is passed as the address part of the url.
// For example, if a POST is made to /bzz-resource:/foo.eth/raw/13 a new resource with frequency 13
// and name "foo.eth" will be created
// The POST request admits a JSON structure as defined in the mru package: `mru.updateRequestJSON`
// The requests can be to a) create a resource, b) update a resource or c) both a+b: create a resource and set the initial content
func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
log.Debug("handle.post.resource", "ruid", r.ruid)
@ -532,33 +530,54 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
defer sp.Finish()
var err error
var addr storage.Address
var name string
var outdata []byte
isRaw, frequency, err := resourcePostMode(r.uri.Path)
// Creation and update must send mru.updateRequestJSON JSON structure
body, err := ioutil.ReadAll(r.Body)
if err != nil {
Respond(w, r, err.Error(), http.StatusBadRequest)
Respond(w, r, err.Error(), http.StatusInternalServerError)
return
}
var updateRequest mru.Request
if err := updateRequest.UnmarshalJSON(body); err != nil { // decodes request JSON
Respond(w, r, err.Error(), http.StatusBadRequest) //TODO: send different status response depending on error
return
}
// new mutable resource creation will always have a frequency field larger than 0
if frequency > 0 {
if updateRequest.IsUpdate() {
// Verify that the signature is intact and that the signer is authorized
// to update this resource
// Check this early, to avoid creating a resource and then not being able to set its first update.
if err = updateRequest.Verify(); err != nil {
Respond(w, r, err.Error(), http.StatusForbidden)
return
}
}
name = r.uri.Addr
// the key is the content addressed root chunk holding mutable resource metadata information
addr, err = s.api.ResourceCreate(ctx, name, frequency)
if updateRequest.IsNew() {
err = s.api.ResourceCreate(r.Context(), &updateRequest)
if err != nil {
code, err2 := s.translateResourceError(w, r, "resource creation fail", err)
Respond(w, r, err2.Error(), code)
return
}
}
if updateRequest.IsUpdate() {
_, err = s.api.ResourceUpdate(r.Context(), &updateRequest.SignedResourceUpdate)
if err != nil {
Respond(w, r, err.Error(), http.StatusInternalServerError)
return
}
}
// at this point both possible operations (create, update or both) were successful
// so in case it was a new resource, then create a manifest and send it over.
if updateRequest.IsNew() {
// we create a manifest so we can retrieve the resource with bzz:// later
// this manifest has a special "resource type" manifest, and its hash is the key of the mutable resource
// root chunk
m, err := s.api.NewResourceManifest(r.Context(), addr.Hex())
// metadata chunk (rootAddr)
m, err := s.api.NewResourceManifest(r.Context(), updateRequest.RootAddr().Hex())
if err != nil {
Respond(w, r, fmt.Sprintf("failed to create resource manifest: %v", err), http.StatusInternalServerError)
return
@ -568,85 +587,21 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
// the client can access the root chunk key directly through its Hash member
// the manifest key should be set as content in the resolver of the ENS name
// \TODO update manifest key automatically in ENS
outdata, err = json.Marshal(m)
outdata, err := json.Marshal(m)
if err != nil {
Respond(w, r, fmt.Sprintf("failed to create json response: %s", err), http.StatusInternalServerError)
return
}
} else {
// to update the resource through http we need to retrieve the key for the mutable resource root chunk
// that means that we retrieve the manifest and inspect its Hash member.
manifestAddr := r.uri.Address()
if manifestAddr == nil {
manifestAddr, err = s.api.Resolve(r.Context(), r.uri)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot resolve %s: %s", r.uri.Addr, err), http.StatusNotFound)
return
}
} else {
w.Header().Set("Cache-Control", "max-age=2147483648")
}
// get the root chunk key from the manifest
addr, err = s.api.ResolveResourceManifest(r.Context(), manifestAddr)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("error resolving resource root chunk for %s: %s", r.uri.Addr, err), http.StatusNotFound)
return
}
log.Debug("handle.post.resource: resolved", "ruid", r.ruid, "manifestkey", manifestAddr, "rootchunkkey", addr)
name, _, err = s.api.ResourceLookup(ctx, addr, 0, 0, &mru.LookupParams{})
if err != nil {
Respond(w, r, err.Error(), http.StatusNotFound)
return
}
}
// Creation and update must send data aswell. This data constitutes the update data itself.
data, err := ioutil.ReadAll(r.Body)
if err != nil {
Respond(w, r, err.Error(), http.StatusInternalServerError)
return
}
// Multihash will be passed as hex-encoded data, so we need to parse this to bytes
if isRaw {
_, _, _, err = s.api.ResourceUpdate(ctx, name, data)
if err != nil {
Respond(w, r, err.Error(), http.StatusBadRequest)
return
}
} else {
bytesdata, err := hexutil.Decode(string(data))
if err != nil {
Respond(w, r, err.Error(), http.StatusBadRequest)
return
}
_, _, _, err = s.api.ResourceUpdateMultihash(ctx, name, bytesdata)
if err != nil {
Respond(w, r, err.Error(), http.StatusBadRequest)
return
}
}
// If we have data to return, write this now
// \TODO there should always be data to return here
if len(outdata) > 0 {
w.Header().Add("Content-type", "text/plain")
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, string(outdata))
return
}
w.WriteHeader(http.StatusOK)
w.Header().Add("Content-type", "application/json")
}
// Retrieve mutable resource updates:
// bzz-resource://<id> - get latest update
// bzz-resource://<id>/<n> - get latest update on period n
// bzz-resource://<id>/<n>/<m> - get update version m of period n
// bzz-resource://<id>/meta - get metadata and next version information
// <id> = ens name or hash
// TODO: Enable pass maxPeriod parameter
func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
@ -666,31 +621,51 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
w.Header().Set("Cache-Control", "max-age=2147483648")
}
// get the root chunk key from the manifest
key, err := s.api.ResolveResourceManifest(r.Context(), manifestAddr)
// get the root chunk rootAddr from the manifest
rootAddr, err := s.api.ResolveResourceManifest(r.Context(), manifestAddr)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("error resolving resource root chunk for %s: %s", r.uri.Addr, err), http.StatusNotFound)
return
}
log.Debug("handle.get.resource: resolved", "ruid", r.ruid, "manifestkey", manifestAddr, "rootchunk key", key)
log.Debug("handle.get.resource: resolved", "ruid", r.ruid, "manifestkey", manifestAddr, "rootchunk addr", rootAddr)
// determine if the query specifies period and version
// determine if the query specifies period and version or it is a metadata query
var params []string
if len(r.uri.Path) > 0 {
if r.uri.Path == "meta" {
unsignedUpdateRequest, err := s.api.ResourceNewRequest(r.Context(), rootAddr)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot retrieve resource metadata for rootAddr=%s: %s", rootAddr.Hex(), err), http.StatusNotFound)
return
}
rawResponse, err := unsignedUpdateRequest.MarshalJSON()
if err != nil {
Respond(w, r, fmt.Sprintf("cannot encode unsigned UpdateRequest: %v", err), http.StatusInternalServerError)
return
}
w.Header().Add("Content-type", "application/json")
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, string(rawResponse))
return
}
params = strings.Split(r.uri.Path, "/")
}
var name string
var period uint64
var version uint64
var data []byte
now := time.Now()
switch len(params) {
case 0: // latest only
name, data, err = s.api.ResourceLookup(r.Context(), key, 0, 0, nil)
name, data, err = s.api.ResourceLookup(r.Context(), mru.LookupLatest(rootAddr))
case 2: // specific period and version
var version uint64
var period uint64
version, err = strconv.ParseUint(params[1], 10, 32)
if err != nil {
break
@ -699,13 +674,14 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
if err != nil {
break
}
name, data, err = s.api.ResourceLookup(r.Context(), key, uint32(period), uint32(version), nil)
name, data, err = s.api.ResourceLookup(r.Context(), mru.LookupVersion(rootAddr, uint32(period), uint32(version)))
case 1: // last version of specific period
var period uint64
period, err = strconv.ParseUint(params[0], 10, 32)
if err != nil {
break
}
name, data, err = s.api.ResourceLookup(r.Context(), key, uint32(period), uint32(version), nil)
name, data, err = s.api.ResourceLookup(r.Context(), mru.LookupLatestVersionInPeriod(rootAddr, uint32(period)))
default: // bogus
err = mru.NewError(storage.ErrInvalidValue, "invalid mutable resource request")
}