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			291 lines
		
	
	
	
		
			8.8 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| // GoToSocial
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| // Copyright (C) GoToSocial Authors admin@gotosocial.org
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| // SPDX-License-Identifier: AGPL-3.0-or-later
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| //
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| // This program is free software: you can redistribute it and/or modify
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| // it under the terms of the GNU Affero General Public License as published by
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| // the Free Software Foundation, either version 3 of the License, or
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| // (at your option) any later version.
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| //
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| // This program is distributed in the hope that it will be useful,
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| // but WITHOUT ANY WARRANTY; without even the implied warranty of
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| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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| // GNU Affero General Public License for more details.
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| //
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| // You should have received a copy of the GNU Affero General Public License
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| // along with this program.  If not, see <http://www.gnu.org/licenses/>.
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| 
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| package status
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| 
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| import (
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| 	"context"
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| 	"errors"
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| 	"fmt"
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| 
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| 	"github.com/superseriousbusiness/gotosocial/internal/ap"
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| 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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| 	"github.com/superseriousbusiness/gotosocial/internal/db"
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| 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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| 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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| 	"github.com/superseriousbusiness/gotosocial/internal/messages"
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| 	"github.com/superseriousbusiness/gotosocial/internal/util"
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| )
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| 
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| // BoostCreate processes the boost/reblog of target
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| // status, returning the newly-created boost.
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| func (p *Processor) BoostCreate(
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| 	ctx context.Context,
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| 	requester *gtsmodel.Account,
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| 	application *gtsmodel.Application,
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| 	targetID string,
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| ) (*apimodel.Status, gtserror.WithCode) {
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| 	// Get target status and ensure it's not a boost.
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| 	target, errWithCode := p.c.GetVisibleTargetStatus(
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| 		ctx,
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| 		requester,
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| 		targetID,
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| 		nil, // default freshness
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| 	)
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| 	if errWithCode != nil {
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| 		return nil, errWithCode
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| 	}
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| 
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| 	// Unwrap target in case it is a boost.
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| 	target, errWithCode = p.c.UnwrapIfBoost(
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| 		ctx,
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| 		requester,
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| 		target,
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| 	)
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| 	if errWithCode != nil {
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| 		return nil, errWithCode
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| 	}
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| 
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| 	// Check is viable target.
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| 	if target.BoostOfID != "" {
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| 		err := gtserror.Newf("target status %s is boost wrapper", target.URI)
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| 		return nil, gtserror.NewErrorUnprocessableEntity(err)
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| 	}
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| 
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| 	// Ensure valid boost target for requester.
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| 	policyResult, err := p.intFilter.StatusBoostable(ctx,
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| 		requester,
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| 		target,
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| 	)
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| 	if err != nil {
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| 		err := gtserror.Newf("error seeing if status %s is boostable: %w", target.ID, err)
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| 		return nil, gtserror.NewErrorInternalError(err)
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| 	}
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| 
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| 	if policyResult.Forbidden() {
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| 		const errText = "you do not have permission to boost this status"
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| 		err := gtserror.New(errText)
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| 		return nil, gtserror.NewErrorForbidden(err, errText)
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| 	}
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| 
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| 	// Status is visible and boostable
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| 	// (though maybe pending approval).
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| 	boost, err := p.converter.StatusToBoost(ctx,
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| 		target,
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| 		requester,
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| 		application.ID,
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| 	)
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| 	if err != nil {
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| 		return nil, gtserror.NewErrorInternalError(err)
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| 	}
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| 
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| 	// Derive pendingApproval status.
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| 	var pendingApproval bool
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| 	switch {
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| 	case policyResult.WithApproval():
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| 		// We're allowed to do
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| 		// this pending approval.
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| 		pendingApproval = true
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| 
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| 	case policyResult.MatchedOnCollection():
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| 		// We're permitted to do this, but since
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| 		// we matched due to presence in a followers
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| 		// or following collection, we should mark
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| 		// as pending approval and wait until we can
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| 		// prove it's been Accepted by the target.
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| 		pendingApproval = true
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| 
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| 		if *target.Local {
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| 			// If the target is local we don't need
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| 			// to wait for an Accept from remote,
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| 			// we can just preapprove it and have
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| 			// the processor create the Accept.
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| 			boost.PreApproved = true
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| 		}
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| 
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| 	case policyResult.Permitted():
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| 		// We're permitted to do this
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| 		// based on another kind of match.
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| 		pendingApproval = false
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| 	}
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| 
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| 	boost.PendingApproval = &pendingApproval
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| 
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| 	// Store the new boost.
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| 	if err := p.state.DB.PutStatus(ctx, boost); err != nil {
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| 		return nil, gtserror.NewErrorInternalError(err)
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| 	}
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| 
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| 	// Process side effects asynchronously.
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| 	p.state.Workers.Client.Queue.Push(&messages.FromClientAPI{
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| 		APObjectType:   ap.ActivityAnnounce,
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| 		APActivityType: ap.ActivityCreate,
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| 		GTSModel:       boost,
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| 		Origin:         requester,
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| 		Target:         target.Account,
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| 	})
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| 
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| 	// If the boost target status replies to a status
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| 	// that we own, and has a pending interaction
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| 	// request, use the boost as an implicit accept.
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| 	implicitlyAccepted, errWithCode := p.implicitlyAccept(ctx,
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| 		requester, target,
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| 	)
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| 	if errWithCode != nil {
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| 		return nil, errWithCode
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| 	}
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| 
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| 	// If we ended up implicitly accepting, mark the
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| 	// target status as no longer pending approval so
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| 	// it's serialized properly via the API.
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| 	if implicitlyAccepted {
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| 		target.PendingApproval = util.Ptr(false)
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| 	}
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| 
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| 	return p.c.GetAPIStatus(ctx, requester, boost)
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| }
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| 
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| // BoostRemove processes the unboost/unreblog of
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| // target status, returning the target status.
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| func (p *Processor) BoostRemove(
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| 	ctx context.Context,
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| 	requester *gtsmodel.Account,
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| 	application *gtsmodel.Application,
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| 	targetID string,
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| ) (*apimodel.Status, gtserror.WithCode) {
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| 	// Get target status and ensure it's not a boost.
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| 	target, errWithCode := p.c.GetVisibleTargetStatus(
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| 		ctx,
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| 		requester,
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| 		targetID,
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| 		nil, // default freshness
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| 	)
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| 	if errWithCode != nil {
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| 		return nil, errWithCode
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| 	}
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| 
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| 	target, errWithCode = p.c.UnwrapIfBoost(
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| 		ctx,
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| 		requester,
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| 		target,
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| 	)
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| 	if errWithCode != nil {
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| 		return nil, errWithCode
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| 	}
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| 
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| 	// Check whether requester has actually
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| 	// boosted target, by trying to get the boost.
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| 	boost, err := p.state.DB.GetStatusBoost(ctx,
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| 		target.ID,
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| 		requester.ID,
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| 	)
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| 	if err != nil && !errors.Is(err, db.ErrNoEntries) {
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| 		err = gtserror.Newf("db error getting boost of %s: %w", target.ID, err)
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| 		return nil, gtserror.NewErrorInternalError(err)
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| 	}
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| 
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| 	if boost != nil {
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| 		// Status was boosted. Process unboost side effects asynchronously.
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| 		p.state.Workers.Client.Queue.Push(&messages.FromClientAPI{
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| 			APObjectType:   ap.ActivityAnnounce,
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| 			APActivityType: ap.ActivityUndo,
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| 			GTSModel:       boost,
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| 			Origin:         requester,
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| 			Target:         target.Account,
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| 		})
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| 	}
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| 
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| 	return p.c.GetAPIStatus(ctx, requester, target)
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| }
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| 
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| // StatusBoostedBy returns a slice of accounts that have boosted the given status, filtered according to privacy settings.
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| func (p *Processor) StatusBoostedBy(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) ([]*apimodel.Account, gtserror.WithCode) {
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| 	targetStatus, err := p.state.DB.GetStatusByID(ctx, targetStatusID)
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| 	if err != nil {
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| 		wrapped := fmt.Errorf("BoostedBy: error fetching status %s: %s", targetStatusID, err)
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| 		if !errors.Is(err, db.ErrNoEntries) {
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| 			return nil, gtserror.NewErrorInternalError(wrapped)
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| 		}
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| 		return nil, gtserror.NewErrorNotFound(wrapped)
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| 	}
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| 
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| 	if boostOfID := targetStatus.BoostOfID; boostOfID != "" {
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| 		// the target status is a boost wrapper, redirect this request to the status it boosts
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| 		boostedStatus, err := p.state.DB.GetStatusByID(ctx, boostOfID)
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| 		if err != nil {
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| 			wrapped := fmt.Errorf("BoostedBy: error fetching status %s: %s", boostOfID, err)
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| 			if !errors.Is(err, db.ErrNoEntries) {
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| 				return nil, gtserror.NewErrorInternalError(wrapped)
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| 			}
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| 			return nil, gtserror.NewErrorNotFound(wrapped)
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| 		}
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| 		targetStatus = boostedStatus
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| 	}
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| 
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| 	visible, err := p.visFilter.StatusVisible(ctx, requestingAccount, targetStatus)
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| 	if err != nil {
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| 		err = fmt.Errorf("BoostedBy: error seeing if status %s is visible: %s", targetStatus.ID, err)
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| 		return nil, gtserror.NewErrorNotFound(err)
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| 	}
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| 	if !visible {
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| 		err = errors.New("BoostedBy: status is not visible")
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| 		return nil, gtserror.NewErrorNotFound(err)
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| 	}
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| 
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| 	statusBoosts, err := p.state.DB.GetStatusBoosts(ctx, targetStatus.ID)
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| 	if err != nil {
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| 		err = fmt.Errorf("BoostedBy: error seeing who boosted status: %s", err)
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| 		return nil, gtserror.NewErrorNotFound(err)
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| 	}
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| 
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| 	// filter account IDs so the user doesn't see accounts they blocked or which blocked them
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| 	accountIDs := make([]string, 0, len(statusBoosts))
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| 	for _, s := range statusBoosts {
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| 		blocked, err := p.state.DB.IsEitherBlocked(ctx, requestingAccount.ID, s.AccountID)
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| 		if err != nil {
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| 			err = fmt.Errorf("BoostedBy: error checking blocks: %s", err)
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| 			return nil, gtserror.NewErrorNotFound(err)
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| 		}
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| 		if !blocked {
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| 			accountIDs = append(accountIDs, s.AccountID)
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| 		}
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| 	}
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| 
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| 	// TODO: filter other things here? suspended? muted? silenced?
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| 
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| 	// fetch accounts + create their API representations
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| 	apiAccounts := make([]*apimodel.Account, 0, len(accountIDs))
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| 	for _, accountID := range accountIDs {
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| 		account, err := p.state.DB.GetAccountByID(ctx, accountID)
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| 		if err != nil {
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| 			wrapped := fmt.Errorf("BoostedBy: error fetching account %s: %s", accountID, err)
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| 			if !errors.Is(err, db.ErrNoEntries) {
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| 				return nil, gtserror.NewErrorInternalError(wrapped)
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| 			}
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| 			return nil, gtserror.NewErrorNotFound(wrapped)
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| 		}
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| 
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| 		apiAccount, err := p.converter.AccountToAPIAccountPublic(ctx, account)
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| 		if err != nil {
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| 			err = fmt.Errorf("BoostedBy: error converting account to api model: %s", err)
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| 			return nil, gtserror.NewErrorInternalError(err)
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| 		}
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| 		apiAccounts = append(apiAccounts, apiAccount)
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| 	}
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| 
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| 	return apiAccounts, nil
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| }
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