Implement ActivityPub

.gitignore

-p.out
+gotest.log

.gitlab-ci.yml

 image: golang:1.9
 variables:
   SRC_DIR: "/go/src/git.feneas.org/ganggo"
+  BUILD_DIR: "/builds/ganggo/federation"
+before_script:
+- mkdir -p $SRC_DIR
+- cp -r ${BUILD_DIR} ${SRC_DIR}/federation
+- cd ${SRC_DIR}/federation
+- go get -t -v ./...
 run unit tests:
-  before_script:
-  - mkdir -p $SRC_DIR
-  - cp -r /builds/ganggo/federation ${SRC_DIR}/federation
-  - cd ${SRC_DIR}/federation
-  - go get -t -v ./...
   script:
   - go test -v -race -covermode=atomic
+  - cat gotest.log
+sast:
+  image: registry.gitlab.com/gitlab-org/security-products/analyzers/gosec:11-3-stable
+  allow_failure: true
+  script:
+    - /analyzer run
+  artifacts:
+    paths: [gl-sast-report.json]

entity_comment.go → apu_entity_accept.go

 package federation
 //
-// GangGo Diaspora Federation Library
-// Copyright (C) 2017 Lukas Matt <lukas@zauberstuhl.de>
+// GangGo Federation Library
+// Copyright (C) 2017-2018 Lukas Matt <lukas@zauberstuhl.de>
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -17,31 +17,30 @@ package federation
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 
-import "github.com/Zauberstuhl/go-xml"
+import (
+  "crypto/rsa"
+  "encoding/json"
+)
 
-type EntityComment struct {
-  XMLName xml.Name `xml:"comment"`
-  Author string `xml:"author"`
-  CreatedAt Time `xml:"created_at"`
-  Guid string `xml:"guid"`
-  ParentGuid string `xml:"parent_guid"`
-  Text string `xml:"text"`
-  AuthorSignature string `xml:"author_signature"`
+type ActivityPubAccept struct {
+  ActivityPubContext
+  Actor string `json:"actor"`
+  Object ActivityPubFollow `json:"object"`
 }
 
-func (e EntityComment) Signature() string {
-  return e.AuthorSignature
+func (e *ActivityPubAccept) Unmarshal(b []byte) error {
+  return json.Unmarshal(b, e)
 }
 
-func (e EntityComment) SignatureText(order string) (signatureOrder []string) {
-  if order != "" {
-    return ExractSignatureText(order, e)
-  }
-  return []string{
-    e.Author,
-    e.CreatedAt.String(),
-    e.Guid,
-    e.ParentGuid,
-    e.Text,
+func (e *ActivityPubAccept) Marshal(priv *rsa.PrivateKey, pub *rsa.PublicKey) ([]byte, error) {
+  e.ActivityPubContext = ActivityPubContext{
+    Context: []interface{}{ACTIVITY_STREAMS},
+    ActivityPubBase: ActivityPubBase{
+      Id: e.Id,
+      Type: ActivityTypeAccept,
+    },
   }
+  b, err := json.MarshalIndent(e, "", "  ")
+  Log.Info("ActivityPubAccept", string(b))
+  return b, err
 }

entity_retraction.go → apu_entity_base.go

@@ -17,11 +17,12 @@ package federation
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 
-import "github.com/Zauberstuhl/go-xml"
+type ActivityPubBase struct {
+  Id string `json:"id"`
+  Type string `json:"type"`
+}
 
-type EntityRetraction struct {
-  XMLName xml.Name `xml:"retraction"`
-  Author string `xml:"author"`
-  TargetGuid string `xml:"target_guid"`
-  TargetType string `xml:"target_type"`
+type ActivityPubContext struct {
+  Context []interface{} `json:"@context"`
+  ActivityPubBase
 }

entity_photo.go → apu_entity_collection.go

@@ -17,17 +17,17 @@ package federation
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 
-type EntityPhoto struct {
-  Guid string `xml:"guid"`
-  Author string `xml:"author"`
-  Public bool `xml:"public"`
-  CreatedAt Time `xml:"created_at"`
-  RemotePhotoPath string `xml:"remote_photo_path"`
-  RemotePhotoName string `xml:"remote_photo_name"`
-  Text string `xml:"text"`
-  StatusMessageGuid string `xml:"status_message_guid"`
-  Height int `xml:"height"`
-  Width int `xml:"width"`
+type ActivityPubCollection struct {
+  ActivityPubContext
+  TotalItems int `json:"totalItems"`
+  First *string `json:"first,omitempty"`
 }
 
-type EntityPhotos []EntityPhoto
+type ActivityPubCollectionPage struct {
+  ActivityPubContext
+  TotalItems int `json:"totalItems"`
+  Next *string `json:"next,omitempty"`
+  PartOf string `json:"partOf"`
+  Items interface{} `json:"items,omitempty"`
+  OrderedItems interface{} `json:"orderedItems,omitempty"`
+}

apu_entity_create.go

+package federation
+//
+// GangGo Federation Library
+// Copyright (C) 2017-2018 Lukas Matt <lukas@zauberstuhl.de>
+//
+// This program 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
+// any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+import (
+  "net/http"
+  "crypto/rsa"
+  "encoding/json"
+  "bytes"
+  "git.feneas.org/ganggo/federation/helpers"
+  "fmt"
+)
+
+type ActivityPubCreate struct {
+  ActivityPubContext `json:",omitempty"`
+//  Id string `json:"id"`
+  Actor string `json:"actor"`
+  Published helpers.Time `json:"published"`
+  To []string `json:"to"`
+  Cc []string `json:"cc"`
+  Object ActivityPubNote `json:"object"`
+}
+
+type ActivityPubNote struct {
+  ActivityPubBase `json:",omitempty"`
+//  Id string `json:"id"`
+  Summary string `json:"summary"`
+  Content string `json:"content"`
+  InReplyTo string `json:"inReplyTo"`
+  Published helpers.Time `json:"published"`
+  Url string `json:"url"`
+  AttributedTo string `json:"attributedTo"`
+  // NOTE mastodon is not using it ??
+  // see Public method for current implementation
+  Sensitive bool `json:"sensitive"`
+  To []string `json:"to"`
+  Cc []string `json:"cc"`
+  Attachment []ActivityPubAttachment `json:"attachment,omitempty"`
+  Tags *ActivityPubNoteTags `json:"tag,omitempty"`
+}
+
+type ActivityPubAttachment struct {
+  Type string `json:"type"`
+  MediaType string `json:"mediaType"`
+  Url string `json:"url"`
+}
+
+type ActivityPubNoteTag struct {
+  Type string `json:"type"`
+  Href string `json:"href"`
+  Name string `json:"name"`
+}
+
+type ActivityPubNoteTags []ActivityPubNoteTag
+
+func (e *ActivityPubCreate) Author() string { return e.Actor }
+
+func (e *ActivityPubCreate) SetAuthor(author string) {
+  username, err := helpers.ParseHandle(author)
+  if err != nil {
+    (*e).Actor = author
+  } else {
+    (*e).Actor = fmt.Sprintf(config.ApURLFormat,
+      fmt.Sprintf("user/%s/actor", username))
+  }
+  (*e).Object.AttributedTo = e.Actor
+}
+
+func (e *ActivityPubCreate) Send(inbox string, priv *rsa.PrivateKey, pub *rsa.PublicKey) error {
+  payload, err := e.Marshal(priv, pub)
+  if err != nil {
+    return err
+  }
+
+  client := (&HttpClient{}).New(e.Author() + "#main-key", priv)
+  return client.Push(inbox, http.Header{
+      "Content-Type": []string{CONTENT_TYPE_JSON},
+    }, bytes.NewBuffer(payload))
+}
+
+func (e *ActivityPubCreate) Unmarshal(b []byte) error {
+  err := json.Unmarshal(b, e)
+  Log.Info("ActivityPubCreate Unmarshal", *e)
+  return err
+}
+
+func (e *ActivityPubCreate) Marshal(priv *rsa.PrivateKey, pub *rsa.PublicKey) ([]byte, error) {
+  e.ActivityPubContext = ActivityPubContext{
+    []interface{}{ACTIVITY_STREAMS}, ActivityPubBase{
+      Id: e.Id, Type: ActivityTypeCreate,
+    },
+  }
+  e.Object.Type = ActivityTypeNote
+
+  b, err := json.MarshalIndent(e, "", "  ")
+  Log.Info("ActivityPubCreate", string(b))
+  return b, err
+}
+
+func (e *ActivityPubCreate) Recipients() []string {
+  return e.To
+}
+
+func (e *ActivityPubCreate) SetRecipients(recipients []string) {
+  (*e).To = recipients
+  (*e).Object.To = e.To
+  (*e).Cc = []string{}
+  (*e).Object.Cc = e.Cc
+  (*e).Object.AttributedTo = e.Actor
+  tags := ActivityPubNoteTags{}
+  for _, recipient := range recipients {
+    tags = append(tags, ActivityPubNoteTag{
+      Type: "Mention", Href: recipient, Name: recipient,
+    })
+  }
+  (*e).Object.Tags = &tags
+}

apu_entity_create_comment.go

+package federation
+//
+// GangGo Federation Library
+// Copyright (C) 2017-2018 Lukas Matt <lukas@zauberstuhl.de>
+//
+// This program 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
+// any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+import (
+  "crypto/rsa"
+  "git.feneas.org/ganggo/federation/helpers"
+  "time"
+  "fmt"
+)
+
+type ActivityPubCreateComment struct {
+  ActivityPubCreate
+}
+
+func (e *ActivityPubCreateComment) Type() MessageType {
+  return MessageType{
+    Proto: ActivityPubProtocol,
+    Entity: Comment,
+  }
+}
+
+func (e *ActivityPubCreateComment) SetAuthor(author string) {
+  username, err := helpers.ParseHandle(author)
+  if err != nil {
+    (*e).Actor = author
+  } else {
+    (*e).Actor = fmt.Sprintf(config.ApURLFormat,
+      fmt.Sprintf("user/%s", username))
+  }
+
+  if len(e.To) == 0 {
+    (*e).To = []string{ACTIVITY_STREAMS_PUBLIC}
+    (*e).Object.To = e.To
+    (*e).Cc = []string{e.Actor + "/followers"}
+    (*e).Object.Cc = (*e).Cc
+  }
+  (*e).Actor = e.Actor + "/actor"
+}
+
+func (e *ActivityPubCreateComment) Guid() string {
+  return helpers.LinkToGuid(e.Object.Id)
+}
+
+func (e *ActivityPubCreateComment) SetGuid(guid string) {
+  link, err := helpers.GuidToLink(guid)
+  if err != nil {
+    (*e).Object.Id = fmt.Sprintf(config.GuidURLFormat, guid)
+  } else {
+    (*e).Object.Id = link
+  }
+  (*e).Id = e.Object.Id + "#create"
+}
+
+func (e *ActivityPubCreateComment) Parent() string {
+  parts, err := helpers.ParseStringHelper(e.Object.InReplyTo, config.GuidURLRegExp(), 1)
+  if err != nil {
+    Log.Info(err)
+    return helpers.LinkToGuid(e.Object.InReplyTo)
+  }
+  return parts[1]
+}
+
+func (e *ActivityPubCreateComment) SetParent(guid string) {
+  link, err := helpers.GuidToLink(guid)
+  if err == nil {
+    (*e).Object.InReplyTo = link
+  } else {
+    (*e).Object.InReplyTo = fmt.Sprintf(config.GuidURLFormat, guid)
+  }
+  (*e).Object.Url = e.Object.InReplyTo
+}
+
+func (e *ActivityPubCreateComment) Signature() string { return "" }
+
+func (e *ActivityPubCreateComment) SetSignature(priv *rsa.PrivateKey) error {
+  return nil
+}
+
+func (e *ActivityPubCreateComment) SignatureOrder() string { return "" }
+
+func (e *ActivityPubCreateComment) CreatedAt() helpers.Time {
+  return e.Object.Published
+}
+
+func (e *ActivityPubCreateComment) SetCreatedAt(createdAt time.Time) {
+  e.Published.New(createdAt)
+  e.Object.Published.New(createdAt)
+}
+
+func (e *ActivityPubCreateComment) Text() string {
+  return e.Object.Content
+}
+
+func (e *ActivityPubCreateComment) SetText(text string) {
+  (*e).Object.Content = text
+}

apu_entity_create_post.go

+package federation
+//
+// GangGo Federation Library
+// Copyright (C) 2017-2018 Lukas Matt <lukas@zauberstuhl.de>
+//
+// This program 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
+// any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+import (
+  "git.feneas.org/ganggo/federation/helpers"
+  "time"
+  "fmt"
+)
+
+type ActivityPubCreatePost struct {
+  ActivityPubCreate
+}
+
+func (e *ActivityPubCreatePost) Type() MessageType {
+  return MessageType{
+    Proto: ActivityPubProtocol,
+    Entity: StatusMessage,
+  }
+}
+
+func (e *ActivityPubCreatePost) SetAuthor(author string) {
+  username, err := helpers.ParseHandle(author)
+  if err != nil {
+    (*e).Actor = author
+  } else {
+    (*e).Actor = fmt.Sprintf(config.ApURLFormat,
+      fmt.Sprintf("user/%s", username))
+  }
+
+  if len(e.To) == 0 {
+    (*e).To = []string{ACTIVITY_STREAMS_PUBLIC}
+    (*e).Object.To = e.To
+    (*e).Cc = []string{e.Actor + "/followers"}
+    (*e).Object.Cc = (*e).Cc
+  }
+  (*e).Actor = e.Actor + "/actor"
+  (*e).Object.AttributedTo = e.Actor
+}
+
+func (e *ActivityPubCreatePost) Guid() string {
+  return helpers.LinkToGuid(e.Object.Id)
+}
+
+func (e *ActivityPubCreatePost) SetGuid(guid string) {
+  link, err := helpers.GuidToLink(guid)
+  if err != nil {
+    (*e).Object.Id = fmt.Sprintf(config.GuidURLFormat, guid)
+  } else {
+    (*e).Object.Id = link
+  }
+  (*e).Id = e.Object.Id + "#create"
+  (*e).Object.Url = e.Object.Id
+}
+
+func (e *ActivityPubCreatePost) CreatedAt() helpers.Time {
+  return e.Object.Published
+}
+
+func (e *ActivityPubCreatePost) SetCreatedAt(createdAt time.Time) {
+  e.Published.New(createdAt)
+  e.Object.Published.New(createdAt)
+}
+
+func (e *ActivityPubCreatePost) Provider() string { return "" }
+
+func (e *ActivityPubCreatePost) SetProvider(provider string) {}
+
+func (e *ActivityPubCreatePost) Text() string {
+  return e.Object.Content
+}
+
+func (e *ActivityPubCreatePost) SetText(text string) {
+  (*e).Object.Content = text
+}
+
+func (e *ActivityPubCreatePost) Public() bool {
+  for _, to := range e.Object.To {
+    if to == ACTIVITY_STREAMS_PUBLIC {
+      return true
+    }
+  }
+  return false
+}
+
+func (e *ActivityPubCreatePost) SetPublic(public bool) {}
+
+func (e *ActivityPubCreatePost) FilePaths() (files []string) {
+  for _, attachment := range e.Object.Attachment {
+    files = append(files, attachment.Url)
+  }
+  return
+}

apu_entity_follow.go

+package federation
+//
+// GangGo Federation Library
+// Copyright (C) 2017-2018 Lukas Matt <lukas@zauberstuhl.de>
+//
+// This program 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
+// any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+import (
+  "net/http"
+  "crypto/rsa"
+  "encoding/json"
+  "bytes"
+  "fmt"
+  "git.feneas.org/ganggo/federation/helpers"
+)
+
+type ActivityPubFollow struct {
+  ActivityPubContext
+  Actor string `json:"actor"`
+  Object string `json:"object"`
+  Following helpers.ReadOnlyBool
+}
+
+func (e *ActivityPubFollow) Author() string { return e.Actor }
+
+func (e *ActivityPubFollow) SetAuthor(author string) {
+  username, err := helpers.ParseHandle(author)
+  if err != nil {
+    (*e).Actor = author
+  } else {
+    (*e).Actor = fmt.Sprintf(config.ApURLFormat,
+      fmt.Sprintf("user/%s/actor", username))
+  }
+  (*e).Id = e.Actor + "#follow"
+}
+
+func (e *ActivityPubFollow) Send(inbox string, priv *rsa.PrivateKey, pub *rsa.PublicKey) error {
+  payload, err := e.Marshal(priv, pub)
+  if err != nil {
+    return err
+  }
+
+  client := (&HttpClient{}).New(e.Author() + "#main-key", priv)
+  return client.Push(inbox, http.Header{
+      "Content-Type": []string{CONTENT_TYPE_JSON},
+    }, bytes.NewBuffer(payload))
+}
+
+func (e *ActivityPubFollow) Unmarshal(b []byte) error {
+  return json.Unmarshal(b, e)
+}
+
+func (e *ActivityPubFollow) Marshal(priv *rsa.PrivateKey, pub *rsa.PublicKey) ([]byte, error) {
+  e.ActivityPubContext = ActivityPubContext{
+    Context: []interface{}{ACTIVITY_STREAMS},
+    ActivityPubBase: ActivityPubBase{
+      Id: e.Id,
+      Type: ActivityTypeFollow,
+    },
+  }
+  b, err := json.MarshalIndent(e, "", "  ")
+  Log.Info("ActivityPubFollow", string(b))
+  return b, err
+}
+
+func (e *ActivityPubFollow) Type() MessageType {
+  return MessageType{
+    Proto: ActivityPubProtocol,
+    Entity: Contact,
+  }
+}
+
+func (e *ActivityPubFollow) Recipient() string {
+  return e.Object
+}
+
+func (e *ActivityPubFollow) SetRecipient(recipient string) {
+  (*e).Object = recipient
+}
+
+func (e *ActivityPubFollow) Sharing() bool { return bool(e.Following) }
+
+func (e *ActivityPubFollow) SetSharing(sharing bool) {}

apu_entity_like.go

+package federation
+//
+// GangGo Federation Library
+// Copyright (C) 2017-2018 Lukas Matt <lukas@zauberstuhl.de>
+//
+// This program 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
+// any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+import (
+  "net/http"
+  "crypto/rsa"
+  "encoding/json"
+  "bytes"
+  "fmt"
+  "git.feneas.org/ganggo/federation/helpers"
+)
+
+type ActivityPubLike struct {
+  ActivityPubContext
+  Actor string `json:"actor"`
+  Object string `json:"object"`
+}
+
+func (e *ActivityPubLike) Author() string { return e.Actor }
+
+func (e *ActivityPubLike) SetAuthor(author string) {
+  username, err := helpers.ParseHandle(author)
+  if err != nil {
+    (*e).Actor = author
+  } else {
+    (*e).Actor = fmt.Sprintf(config.ApURLFormat,
+      fmt.Sprintf("user/%s/actor", username))
+  }
+}
+
+func (e *ActivityPubLike) Send(inbox string, priv *rsa.PrivateKey, pub *rsa.PublicKey) error {
+  payload, err := e.Marshal(priv, pub)
+  if err != nil {
+    return err
+  }
+
+  client := (&HttpClient{}).New(e.Author() + "#main-key", priv)
+  return client.Push(inbox, http.Header{
+      "Content-Type": []string{CONTENT_TYPE_JSON},
+    }, bytes.NewBuffer(payload))
+}
+
+func (e *ActivityPubLike) Unmarshal(b []byte) error {
+  return json.Unmarshal(b, e)
+}
+
+func (e *ActivityPubLike) Marshal(priv *rsa.PrivateKey, pub *rsa.PublicKey) ([]byte, error) {
+  e.ActivityPubContext = ActivityPubContext{
+    Context: []interface{}{ACTIVITY_STREAMS},
+    ActivityPubBase: ActivityPubBase{
+      Id: e.Id,
+      Type: ActivityTypeLike,
+    },
+  }
+  b, err := json.MarshalIndent(e, "", "  ")
+  Log.Info("ActivityPubLike", string(b))
+  return b, err
+}
+
+func (e *ActivityPubLike) Type() MessageType {
+  return MessageType{
+    Proto: ActivityPubProtocol,
+    Entity: Like,
+  }
+}
+
+func (e *ActivityPubLike) Guid() string {
+  return helpers.LinkToGuid(e.Id)
+}
+
+func (e *ActivityPubLike) SetGuid(guid string) {
+  link, err := helpers.GuidToLink(guid)
+  if err != nil {
+    if e.Actor == "" {
+      Log.Error("ActivityPubLike SetGuid",
+        "You should run SetGuid AFTER Author method!")
+      return
+    }
+    (*e).Id = e.Actor + "#likes/" + guid
+    (*e).Object = fmt.Sprintf(config.GuidURLFormat, guid)
+  } else {
+    (*e).Id = link + "#like"
+    (*e).Object = link
+  }