648 lines
16 KiB
Go
648 lines
16 KiB
Go
package writefreely
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/sha256"
|
|
"database/sql"
|
|
"encoding/base64"
|
|
"encoding/json"
|
|
"fmt"
|
|
"github.com/go-sql-driver/mysql"
|
|
"github.com/gorilla/mux"
|
|
"github.com/writeas/activity/streams"
|
|
"github.com/writeas/httpsig"
|
|
"github.com/writeas/impart"
|
|
"github.com/writeas/web-core/activitypub"
|
|
"github.com/writeas/web-core/activitystreams"
|
|
"github.com/writeas/web-core/log"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"strconv"
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
// TODO: delete. don't use this!
|
|
apCustomHandleDefault = "blog"
|
|
)
|
|
|
|
type RemoteUser struct {
|
|
ID int64
|
|
ActorID string
|
|
Inbox string
|
|
SharedInbox string
|
|
}
|
|
|
|
func (ru *RemoteUser) AsPerson() *activitystreams.Person {
|
|
return &activitystreams.Person{
|
|
BaseObject: activitystreams.BaseObject{
|
|
Type: "Person",
|
|
Context: []interface{}{
|
|
activitystreams.Namespace,
|
|
},
|
|
ID: ru.ActorID,
|
|
},
|
|
Inbox: ru.Inbox,
|
|
Endpoints: activitystreams.Endpoints{
|
|
SharedInbox: ru.SharedInbox,
|
|
},
|
|
}
|
|
}
|
|
|
|
func handleFetchCollectionActivities(app *app, w http.ResponseWriter, r *http.Request) error {
|
|
w.Header().Set("Server", serverSoftware)
|
|
|
|
vars := mux.Vars(r)
|
|
alias := vars["alias"]
|
|
|
|
// TODO: enforce visibility
|
|
// Get base Collection data
|
|
var c *Collection
|
|
var err error
|
|
if app.cfg.App.SingleUser {
|
|
c, err = app.db.GetCollectionByID(1)
|
|
} else {
|
|
c, err = app.db.GetCollection(alias)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
p := c.PersonObject()
|
|
|
|
return impart.RenderActivityJSON(w, p, http.StatusOK)
|
|
}
|
|
|
|
func handleFetchCollectionOutbox(app *app, w http.ResponseWriter, r *http.Request) error {
|
|
w.Header().Set("Server", serverSoftware)
|
|
|
|
vars := mux.Vars(r)
|
|
alias := vars["alias"]
|
|
|
|
// TODO: enforce visibility
|
|
// Get base Collection data
|
|
var c *Collection
|
|
var err error
|
|
if app.cfg.App.SingleUser {
|
|
c, err = app.db.GetCollectionByID(1)
|
|
} else {
|
|
c, err = app.db.GetCollection(alias)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if app.cfg.App.SingleUser {
|
|
if alias != c.Alias {
|
|
return ErrCollectionNotFound
|
|
}
|
|
}
|
|
|
|
res := &CollectionObj{Collection: *c}
|
|
app.db.GetPostsCount(res, false)
|
|
accountRoot := c.FederatedAccount()
|
|
|
|
page := r.FormValue("page")
|
|
p, err := strconv.Atoi(page)
|
|
if err != nil || p < 1 {
|
|
// Return outbox
|
|
oc := activitystreams.NewOrderedCollection(accountRoot, "outbox", res.TotalPosts)
|
|
return impart.RenderActivityJSON(w, oc, http.StatusOK)
|
|
}
|
|
|
|
// Return outbox page
|
|
ocp := activitystreams.NewOrderedCollectionPage(accountRoot, "outbox", res.TotalPosts, p)
|
|
ocp.OrderedItems = []interface{}{}
|
|
|
|
posts, err := app.db.GetPosts(c, p, false)
|
|
for _, pp := range *posts {
|
|
pp.Collection = res
|
|
o := pp.ActivityObject()
|
|
a := activitystreams.NewCreateActivity(o)
|
|
ocp.OrderedItems = append(ocp.OrderedItems, *a)
|
|
}
|
|
|
|
return impart.RenderActivityJSON(w, ocp, http.StatusOK)
|
|
}
|
|
|
|
func handleFetchCollectionFollowers(app *app, w http.ResponseWriter, r *http.Request) error {
|
|
w.Header().Set("Server", serverSoftware)
|
|
|
|
vars := mux.Vars(r)
|
|
alias := vars["alias"]
|
|
|
|
// TODO: enforce visibility
|
|
// Get base Collection data
|
|
var c *Collection
|
|
var err error
|
|
if app.cfg.App.SingleUser {
|
|
c, err = app.db.GetCollectionByID(1)
|
|
} else {
|
|
c, err = app.db.GetCollection(alias)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
accountRoot := c.FederatedAccount()
|
|
|
|
folls, err := app.db.GetAPFollowers(c)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
page := r.FormValue("page")
|
|
p, err := strconv.Atoi(page)
|
|
if err != nil || p < 1 {
|
|
// Return outbox
|
|
oc := activitystreams.NewOrderedCollection(accountRoot, "followers", len(*folls))
|
|
return impart.RenderActivityJSON(w, oc, http.StatusOK)
|
|
}
|
|
|
|
// Return outbox page
|
|
ocp := activitystreams.NewOrderedCollectionPage(accountRoot, "followers", len(*folls), p)
|
|
ocp.OrderedItems = []interface{}{}
|
|
/*
|
|
for _, f := range *folls {
|
|
ocp.OrderedItems = append(ocp.OrderedItems, f.ActorID)
|
|
}
|
|
*/
|
|
return impart.RenderActivityJSON(w, ocp, http.StatusOK)
|
|
}
|
|
|
|
func handleFetchCollectionFollowing(app *app, w http.ResponseWriter, r *http.Request) error {
|
|
w.Header().Set("Server", serverSoftware)
|
|
|
|
vars := mux.Vars(r)
|
|
alias := vars["alias"]
|
|
|
|
// TODO: enforce visibility
|
|
// Get base Collection data
|
|
var c *Collection
|
|
var err error
|
|
if app.cfg.App.SingleUser {
|
|
c, err = app.db.GetCollectionByID(1)
|
|
} else {
|
|
c, err = app.db.GetCollection(alias)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
accountRoot := c.FederatedAccount()
|
|
|
|
page := r.FormValue("page")
|
|
p, err := strconv.Atoi(page)
|
|
if err != nil || p < 1 {
|
|
// Return outbox
|
|
oc := activitystreams.NewOrderedCollection(accountRoot, "following", 0)
|
|
return impart.RenderActivityJSON(w, oc, http.StatusOK)
|
|
}
|
|
|
|
// Return outbox page
|
|
ocp := activitystreams.NewOrderedCollectionPage(accountRoot, "following", 0, p)
|
|
ocp.OrderedItems = []interface{}{}
|
|
return impart.RenderActivityJSON(w, ocp, http.StatusOK)
|
|
}
|
|
|
|
func handleFetchCollectionInbox(app *app, w http.ResponseWriter, r *http.Request) error {
|
|
w.Header().Set("Server", serverSoftware)
|
|
|
|
vars := mux.Vars(r)
|
|
alias := vars["alias"]
|
|
var c *Collection
|
|
var err error
|
|
if app.cfg.App.SingleUser {
|
|
c, err = app.db.GetCollectionByID(1)
|
|
} else {
|
|
c, err = app.db.GetCollection(alias)
|
|
}
|
|
if err != nil {
|
|
// TODO: return Reject?
|
|
return err
|
|
}
|
|
|
|
if debugging {
|
|
dump, err := httputil.DumpRequest(r, true)
|
|
if err != nil {
|
|
log.Error("Can't dump: %v", err)
|
|
} else {
|
|
log.Info("Rec'd! %q", dump)
|
|
}
|
|
}
|
|
|
|
var m map[string]interface{}
|
|
if err := json.NewDecoder(r.Body).Decode(&m); err != nil {
|
|
return err
|
|
}
|
|
|
|
a := streams.NewAccept()
|
|
p := c.PersonObject()
|
|
var to *url.URL
|
|
var isFollow, isUnfollow bool
|
|
fullActor := &activitystreams.Person{}
|
|
var remoteUser *RemoteUser
|
|
|
|
res := &streams.Resolver{
|
|
FollowCallback: func(f *streams.Follow) error {
|
|
isFollow = true
|
|
|
|
// 1) Use the Follow concrete type here
|
|
// 2) Errors are propagated to res.Deserialize call below
|
|
m["@context"] = []string{activitystreams.Namespace}
|
|
b, _ := json.Marshal(m)
|
|
log.Info("Follow: %s", b)
|
|
|
|
_, followID := f.GetId()
|
|
if followID == nil {
|
|
log.Error("Didn't resolve follow ID")
|
|
} else {
|
|
acceptID, err := url.Parse(followID.String() + "-accept")
|
|
if err != nil {
|
|
log.Error("Couldn't parse generated Accept URL '%s': %v", followID.String()+"#accept", err)
|
|
}
|
|
a.SetId(acceptID)
|
|
}
|
|
a.AppendObject(f.Raw())
|
|
_, to = f.GetActor(0)
|
|
obj := f.Raw().GetObjectIRI(0)
|
|
a.AppendActor(obj)
|
|
|
|
// First get actor information
|
|
if to == nil {
|
|
return fmt.Errorf("No valid `to` string")
|
|
}
|
|
fullActor, remoteUser, err = getActor(app, to.String())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return impart.RenderActivityJSON(w, m, http.StatusOK)
|
|
},
|
|
UndoCallback: func(u *streams.Undo) error {
|
|
isUnfollow = true
|
|
|
|
m["@context"] = []string{activitystreams.Namespace}
|
|
b, _ := json.Marshal(m)
|
|
log.Info("Undo: %s", b)
|
|
|
|
a.AppendObject(u.Raw())
|
|
_, to = u.GetActor(0)
|
|
// TODO: get actor from object.object, not object
|
|
obj := u.Raw().GetObjectIRI(0)
|
|
a.AppendActor(obj)
|
|
if to != nil {
|
|
// Populate fullActor from DB?
|
|
remoteUser, err = getRemoteUser(app, to.String())
|
|
if err != nil {
|
|
if iErr, ok := err.(*impart.HTTPError); ok {
|
|
if iErr.Status == http.StatusNotFound {
|
|
log.Error("No remoteuser info for Undo event!")
|
|
}
|
|
}
|
|
return err
|
|
} else {
|
|
fullActor = remoteUser.AsPerson()
|
|
}
|
|
} else {
|
|
log.Error("No to on Undo!")
|
|
}
|
|
return impart.RenderActivityJSON(w, m, http.StatusOK)
|
|
},
|
|
}
|
|
if err := res.Deserialize(m); err != nil {
|
|
// 3) Any errors from #2 can be handled, or the payload is an unknown type.
|
|
log.Error("Unable to resolve Follow: %v", err)
|
|
if debugging {
|
|
log.Error("Map: %s", m)
|
|
}
|
|
return err
|
|
}
|
|
|
|
go func() {
|
|
time.Sleep(2 * time.Second)
|
|
am, err := a.Serialize()
|
|
if err != nil {
|
|
log.Error("Unable to serialize Accept: %v", err)
|
|
return
|
|
}
|
|
am["@context"] = []string{activitystreams.Namespace}
|
|
|
|
if to == nil {
|
|
log.Error("No to! %v", err)
|
|
return
|
|
}
|
|
err = makeActivityPost(p, fullActor.Inbox, am)
|
|
if err != nil {
|
|
log.Error("Unable to make activity POST: %v", err)
|
|
return
|
|
}
|
|
|
|
if isFollow {
|
|
t, err := app.db.Begin()
|
|
if err != nil {
|
|
log.Error("Unable to start transaction: %v", err)
|
|
return
|
|
}
|
|
|
|
var followerID int64
|
|
|
|
if remoteUser != nil {
|
|
followerID = remoteUser.ID
|
|
} else {
|
|
// Add follower locally, since it wasn't found before
|
|
res, err := t.Exec("INSERT INTO remoteusers (actor_id, inbox, shared_inbox) VALUES (?, ?, ?)", fullActor.ID, fullActor.Inbox, fullActor.Endpoints.SharedInbox)
|
|
if err != nil {
|
|
if mysqlErr, ok := err.(*mysql.MySQLError); ok {
|
|
if mysqlErr.Number != mySQLErrDuplicateKey {
|
|
t.Rollback()
|
|
log.Error("Couldn't add new remoteuser in DB: %v\n", err)
|
|
return
|
|
}
|
|
} else {
|
|
t.Rollback()
|
|
log.Error("Couldn't add new remoteuser in DB: %v\n", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
followerID, err = res.LastInsertId()
|
|
if err != nil {
|
|
t.Rollback()
|
|
log.Error("no lastinsertid for followers, rolling back: %v", err)
|
|
return
|
|
}
|
|
|
|
// Add in key
|
|
_, err = t.Exec("INSERT INTO remoteuserkeys (id, remote_user_id, public_key) VALUES (?, ?, ?)", fullActor.PublicKey.ID, followerID, fullActor.PublicKey.PublicKeyPEM)
|
|
if err != nil {
|
|
if mysqlErr, ok := err.(*mysql.MySQLError); ok {
|
|
if mysqlErr.Number != mySQLErrDuplicateKey {
|
|
t.Rollback()
|
|
log.Error("Couldn't add follower keys in DB: %v\n", err)
|
|
return
|
|
}
|
|
} else {
|
|
t.Rollback()
|
|
log.Error("Couldn't add follower keys in DB: %v\n", err)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add follow
|
|
_, err = t.Exec("INSERT INTO remotefollows (collection_id, remote_user_id, created) VALUES (?, ?, NOW())", c.ID, followerID)
|
|
if err != nil {
|
|
if mysqlErr, ok := err.(*mysql.MySQLError); ok {
|
|
if mysqlErr.Number != mySQLErrDuplicateKey {
|
|
t.Rollback()
|
|
log.Error("Couldn't add follower in DB: %v\n", err)
|
|
return
|
|
}
|
|
} else {
|
|
t.Rollback()
|
|
log.Error("Couldn't add follower in DB: %v\n", err)
|
|
return
|
|
}
|
|
}
|
|
|
|
err = t.Commit()
|
|
if err != nil {
|
|
t.Rollback()
|
|
log.Error("Rolling back after Commit(): %v\n", err)
|
|
return
|
|
}
|
|
} else if isUnfollow {
|
|
// Remove follower locally
|
|
_, err = app.db.Exec("DELETE FROM remotefollows WHERE collection_id = ? AND remote_user_id = (SELECT id FROM remoteusers WHERE actor_id = ?)", c.ID, to.String())
|
|
if err != nil {
|
|
log.Error("Couldn't remove follower from DB: %v\n", err)
|
|
}
|
|
}
|
|
}()
|
|
|
|
return nil
|
|
}
|
|
|
|
func makeActivityPost(p *activitystreams.Person, url string, m interface{}) error {
|
|
log.Info("POST %s", url)
|
|
b, err := json.Marshal(m)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
r, _ := http.NewRequest("POST", url, bytes.NewBuffer(b))
|
|
r.Header.Add("Content-Type", "application/activity+json")
|
|
r.Header.Set("User-Agent", "Go ("+serverSoftware+"/"+softwareVer+"; +"+hostName+")")
|
|
h := sha256.New()
|
|
h.Write(b)
|
|
r.Header.Add("Digest", "SHA-256="+base64.StdEncoding.EncodeToString(h.Sum(nil)))
|
|
|
|
// Sign using the 'Signature' header
|
|
privKey, err := activitypub.DecodePrivateKey(p.GetPrivKey())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
signer := httpsig.NewSigner(p.PublicKey.ID, privKey, httpsig.RSASHA256, []string{"(request-target)", "date", "host", "digest"})
|
|
err = signer.SignSigHeader(r)
|
|
if err != nil {
|
|
log.Error("Can't sign: %v", err)
|
|
}
|
|
|
|
if debugging {
|
|
dump, err := httputil.DumpRequestOut(r, true)
|
|
if err != nil {
|
|
log.Error("Can't dump: %v", err)
|
|
} else {
|
|
log.Info("%s", dump)
|
|
}
|
|
}
|
|
|
|
resp, err := http.DefaultClient.Do(r)
|
|
if resp != nil && resp.Body != nil {
|
|
defer resp.Body.Close()
|
|
}
|
|
|
|
if resp == nil {
|
|
log.Error("No response.")
|
|
return fmt.Errorf("No resonse.")
|
|
}
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if debugging {
|
|
log.Info("Status : %s", resp.Status)
|
|
log.Info("Response: %s", body)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func resolveIRI(url string) ([]byte, error) {
|
|
log.Info("GET %s", url)
|
|
|
|
r, _ := http.NewRequest("GET", url, nil)
|
|
r.Header.Add("Accept", "application/activity+json")
|
|
r.Header.Set("User-Agent", "Go ("+serverSoftware+"/"+softwareVer+"; +"+hostName+")")
|
|
|
|
if debugging {
|
|
dump, err := httputil.DumpRequestOut(r, true)
|
|
if err != nil {
|
|
log.Error("Can't dump: %v", err)
|
|
} else {
|
|
log.Info("%s", dump)
|
|
}
|
|
}
|
|
|
|
resp, err := http.DefaultClient.Do(r)
|
|
if resp != nil && resp.Body != nil {
|
|
defer resp.Body.Close()
|
|
}
|
|
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if debugging {
|
|
log.Info("Status : %s", resp.Status)
|
|
log.Info("Response: %s", body)
|
|
}
|
|
|
|
return body, nil
|
|
}
|
|
|
|
func deleteFederatedPost(app *app, p *PublicPost, collID int64) error {
|
|
if debugging {
|
|
log.Info("Deleting federated post!")
|
|
}
|
|
actor := p.Collection.PersonObject(collID)
|
|
na := p.ActivityObject()
|
|
|
|
// Add followers
|
|
p.Collection.ID = collID
|
|
followers, err := app.db.GetAPFollowers(&p.Collection.Collection)
|
|
if err != nil {
|
|
log.Error("Couldn't delete post (get followers)! %v", err)
|
|
return err
|
|
}
|
|
|
|
inboxes := map[string][]string{}
|
|
for _, f := range *followers {
|
|
if _, ok := inboxes[f.SharedInbox]; ok {
|
|
inboxes[f.SharedInbox] = append(inboxes[f.SharedInbox], f.ActorID)
|
|
} else {
|
|
inboxes[f.SharedInbox] = []string{f.ActorID}
|
|
}
|
|
}
|
|
|
|
for si, instFolls := range inboxes {
|
|
na.CC = []string{}
|
|
for _, f := range instFolls {
|
|
na.CC = append(na.CC, f)
|
|
}
|
|
|
|
err = makeActivityPost(actor, si, activitystreams.NewDeleteActivity(na))
|
|
if err != nil {
|
|
log.Error("Couldn't delete post! %v", err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func federatePost(app *app, p *PublicPost, collID int64, isUpdate bool) error {
|
|
if debugging {
|
|
if isUpdate {
|
|
log.Info("Federating updated post!")
|
|
} else {
|
|
log.Info("Federating new post!")
|
|
}
|
|
}
|
|
actor := p.Collection.PersonObject(collID)
|
|
na := p.ActivityObject()
|
|
|
|
// Add followers
|
|
p.Collection.ID = collID
|
|
followers, err := app.db.GetAPFollowers(&p.Collection.Collection)
|
|
if err != nil {
|
|
log.Error("Couldn't post! %v", err)
|
|
return err
|
|
}
|
|
log.Info("Followers for %d: %+v", collID, followers)
|
|
|
|
inboxes := map[string][]string{}
|
|
for _, f := range *followers {
|
|
if _, ok := inboxes[f.SharedInbox]; ok {
|
|
inboxes[f.SharedInbox] = append(inboxes[f.SharedInbox], f.ActorID)
|
|
} else {
|
|
inboxes[f.SharedInbox] = []string{f.ActorID}
|
|
}
|
|
}
|
|
|
|
for si, instFolls := range inboxes {
|
|
na.CC = []string{}
|
|
for _, f := range instFolls {
|
|
na.CC = append(na.CC, f)
|
|
}
|
|
var activity *activitystreams.Activity
|
|
if isUpdate {
|
|
activity = activitystreams.NewUpdateActivity(na)
|
|
} else {
|
|
activity = activitystreams.NewCreateActivity(na)
|
|
activity.To = na.To
|
|
activity.CC = na.CC
|
|
}
|
|
err = makeActivityPost(actor, si, activity)
|
|
if err != nil {
|
|
log.Error("Couldn't post! %v", err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func getRemoteUser(app *app, actorID string) (*RemoteUser, error) {
|
|
u := RemoteUser{ActorID: actorID}
|
|
err := app.db.QueryRow("SELECT id, inbox, shared_inbox FROM remoteusers WHERE actor_id = ?", actorID).Scan(&u.ID, &u.Inbox, &u.SharedInbox)
|
|
switch {
|
|
case err == sql.ErrNoRows:
|
|
return nil, impart.HTTPError{http.StatusNotFound, "No remote user with that ID."}
|
|
case err != nil:
|
|
log.Error("Couldn't get remote user %s: %v", actorID, err)
|
|
return nil, err
|
|
}
|
|
|
|
return &u, nil
|
|
}
|
|
|
|
func getActor(app *app, actorIRI string) (*activitystreams.Person, *RemoteUser, error) {
|
|
log.Info("Fetching actor %s locally", actorIRI)
|
|
actor := &activitystreams.Person{}
|
|
remoteUser, err := getRemoteUser(app, actorIRI)
|
|
if err != nil {
|
|
if iErr, ok := err.(impart.HTTPError); ok {
|
|
if iErr.Status == http.StatusNotFound {
|
|
// Fetch remote actor
|
|
log.Info("Not found; fetching actor %s remotely", actorIRI)
|
|
actorResp, err := resolveIRI(actorIRI)
|
|
if err != nil {
|
|
log.Error("Unable to get actor! %v", err)
|
|
return nil, nil, impart.HTTPError{http.StatusInternalServerError, "Couldn't fetch actor."}
|
|
}
|
|
if err := json.Unmarshal(actorResp, &actor); err != nil {
|
|
// FIXME: Hubzilla has an object for the Actor's url: cannot unmarshal object into Go struct field Person.url of type string
|
|
log.Error("Unable to unmarshal actor! %v", err)
|
|
return nil, nil, impart.HTTPError{http.StatusInternalServerError, "Couldn't parse actor."}
|
|
}
|
|
} else {
|
|
return nil, nil, err
|
|
}
|
|
} else {
|
|
return nil, nil, err
|
|
}
|
|
} else {
|
|
actor = remoteUser.AsPerson()
|
|
}
|
|
return actor, remoteUser, nil
|
|
}
|