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[chore] Reject replies to rejected replies (#3291)

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* [chore] Reject replies to rejected replies

* tweak

* don't set URI for implicit Rejects
This commit is contained in:
tobi 2024-09-16 14:08:42 +02:00 committed by GitHub
parent efd1a4f717
commit 71261c62c2
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GPG key ID: B5690EEEBB952194
2 changed files with 130 additions and 14 deletions
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16
internal/federation/dereferencing/status.go
View file

@ -373,7 +373,7 @@ func (d *Dereferencer) enrichStatus(
requestUser string,
uri *url.URL,
status *gtsmodel.Status,
apubStatus ap.Statusable,
statusable ap.Statusable,
) (
*gtsmodel.Status,
ap.Statusable,
@ -393,7 +393,7 @@ func (d *Dereferencer) enrichStatus(
return nil, nil, gtserror.SetUnretrievable(err)
}
if apubStatus == nil {
if statusable == nil {
// Dereference latest version of the status.
rsp, err := tsport.Dereference(ctx, uri)
if err != nil {
@ -402,7 +402,7 @@ func (d *Dereferencer) enrichStatus(
}
// Attempt to resolve ActivityPub status from response.
apubStatus, err = ap.ResolveStatusable(ctx, rsp.Body)
statusable, err = ap.ResolveStatusable(ctx, rsp.Body)
// Tidy up now done.
_ = rsp.Body.Close()
@ -444,7 +444,7 @@ func (d *Dereferencer) enrichStatus(
}
// Get the attributed-to account in order to fetch profile.
attributedTo, err := ap.ExtractAttributedToURI(apubStatus)
attributedTo, err := ap.ExtractAttributedToURI(statusable)
if err != nil {
return nil, nil, gtserror.New("attributedTo was empty")
}
@ -460,7 +460,7 @@ func (d *Dereferencer) enrichStatus(
// ActivityPub model was recently dereferenced, so assume passed status
// may contain out-of-date information. Convert AP model to our GTS model.
latestStatus, err := d.converter.ASStatusToStatus(ctx, apubStatus)
latestStatus, err := d.converter.ASStatusToStatus(ctx, statusable)
if err != nil {
return nil, nil, gtserror.Newf("error converting statusable to gts model for status %s: %w", uri, err)
}
@ -479,8 +479,8 @@ func (d *Dereferencer) enrichStatus(
matches, err := util.URIMatches(
uri,
append(
ap.GetURL(apubStatus), // status URL(s)
ap.GetJSONLDId(apubStatus), // status URI
ap.GetURL(statusable), // status URL(s)
ap.GetJSONLDId(statusable), // status URI
)...,
)
if err != nil {
@ -591,7 +591,7 @@ func (d *Dereferencer) enrichStatus(
}
}
return latestStatus, apubStatus, nil
return latestStatus, statusable, nil
}
func (d *Dereferencer) fetchStatusMentions(

128
internal/federation/dereferencing/status_permitted.go
View file

@ -19,12 +19,18 @@
import (
"context"
"errors"
"net/url"
"time"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/id"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/uris"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
@ -43,6 +49,14 @@
// pending approval, then "PendingApproval" will be set
// to "true" on status. Callers should check this
// and handle it as appropriate.
//
// If status is a reply that is not permitted based on
// interaction policies, or status replies to a status
// that's been Rejected before (ie., it has a rejected
// InteractionRequest stored in the db) then the reply
// will also be rejected, and a pre-rejected interaction
// request will be stored for it before doing cleanup,
// if one didn't already exist.
func (d *Dereferencer) isPermittedStatus(
ctx context.Context,
requestUser string,
@ -58,7 +72,7 @@ func (d *Dereferencer) isPermittedStatus(
log.Warnf(ctx, "status author suspended: %s", status.AccountURI)
permitted = false
case status.InReplyTo != nil:
case status.InReplyToURI != "":
// Status is a reply, check permissivity.
permitted, err = d.isPermittedReply(ctx,
requestUser,
@ -101,8 +115,90 @@ func (d *Dereferencer) isPermittedReply(
requestUser string,
status *gtsmodel.Status,
) (bool, error) {
// Extract reply from status.
inReplyTo := status.InReplyTo
var (
statusURI = status.URI // Definitely set.
inReplyToURI = status.InReplyToURI // Definitely set.
inReplyTo = status.InReplyTo // Might not yet be set.
)
// Check if status with this URI has previously been rejected.
req, err := d.state.DB.GetInteractionRequestByInteractionURI(
gtscontext.SetBarebones(ctx),
statusURI,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting interaction request: %w", err)
return false, err
}
if req != nil && req.IsRejected() {
// This status has been
// rejected reviously, so
// it's not permitted now.
return false, nil
}
// Check if replied-to status has previously been rejected.
req, err = d.state.DB.GetInteractionRequestByInteractionURI(
gtscontext.SetBarebones(ctx),
inReplyToURI,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err := gtserror.Newf("db error getting interaction request: %w", err)
return false, err
}
if req != nil && req.IsRejected() {
// This status's parent was rejected, so
// implicitly this reply should be rejected too.
//
// We know already that we haven't inserted
// a rejected interaction request for this
// status yet so do it before returning.
id := id.NewULID()
// To ensure the Reject chain stays coherent,
// borrow fields from the up-thread rejection.
// This collapses the chain beyond the first
// rejected reply and allows us to avoid derefing
// further replies we already know we don't want.
statusID := req.StatusID
targetAccountID := req.TargetAccountID
// As nobody is actually Rejecting the reply
// directly, but it's an implicit Reject coming
// from our internal logic, don't bother setting
// a URI (it's not a required field anyway).
uri := ""
rejection := &gtsmodel.InteractionRequest{
ID: id,
StatusID: statusID,
TargetAccountID: targetAccountID,
InteractingAccountID: status.AccountID,
InteractionURI: statusURI,
InteractionType: gtsmodel.InteractionReply,
URI: uri,
RejectedAt: time.Now(),
}
err := d.state.DB.PutInteractionRequest(ctx, rejection)
if err != nil && !errors.Is(err, db.ErrAlreadyExists) {
return false, gtserror.Newf("db error putting pre-rejected interaction request: %w", err)
}
return false, nil
}
if inReplyTo == nil {
// We didn't have the replied-to status in
// our database (yet) so we can't know if
// this reply is permitted or not. For now
// just return true; worst-case, the status
// sticks around on the instance for a couple
// hours until we try to dereference it again
// and realize it should be forbidden.
return true, nil
}
if inReplyTo.BoostOfID != "" {
// We do not permit replies to
@ -142,8 +238,28 @@ func (d *Dereferencer) isPermittedReply(
}
if replyable.Forbidden() {
// Replier is not permitted
// to do this interaction.
// Reply is not permitted.
//
// Insert a pre-rejected interaction request
// into the db and return. This ensures that
// replies to this now-rejected status aren't
// inadvertently permitted.
id := id.NewULID()
rejection := &gtsmodel.InteractionRequest{
ID: id,
StatusID: inReplyTo.ID,
TargetAccountID: inReplyTo.AccountID,
InteractingAccountID: status.AccountID,
InteractionURI: statusURI,
InteractionType: gtsmodel.InteractionReply,
URI: uris.GenerateURIForReject(inReplyTo.Account.Username, id),
RejectedAt: time.Now(),
}
err := d.state.DB.PutInteractionRequest(ctx, rejection)
if err != nil && !errors.Is(err, db.ErrAlreadyExists) {
return false, gtserror.Newf("db error putting pre-rejected interaction request: %w", err)
}
return false, nil
}
@ -193,7 +309,7 @@ func (d *Dereferencer) isPermittedReply(
ctx,
requestUser,
status.ApprovedByURI,
status.URI,
statusURI,
inReplyTo.AccountURI,
); err != nil {