gotosocial/internal/visibility/relevantaccounts.go

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/*
GoToSocial
Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package visibility
import (
"context"
"errors"
"fmt"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
// relevantAccounts denotes accounts that are replied to, boosted by, or mentioned in a status.
type relevantAccounts struct {
// Who wrote the status
Account *gtsmodel.Account
// Who is the status replying to
InReplyToAccount *gtsmodel.Account
// Which accounts are mentioned (tagged) in the status
MentionedAccounts []*gtsmodel.Account
// Who authed the boosted status
BoostedAccount *gtsmodel.Account
// If the boosted status replies to another account, who does it reply to?
BoostedInReplyToAccount *gtsmodel.Account
// Who is mentioned (tagged) in the boosted status
BoostedMentionedAccounts []*gtsmodel.Account
}
func (f *filter) relevantAccounts(ctx context.Context, status *gtsmodel.Status, getBoosted bool) (*relevantAccounts, error) {
relAccts := &relevantAccounts{
MentionedAccounts: []*gtsmodel.Account{},
BoostedMentionedAccounts: []*gtsmodel.Account{},
}
/*
Here's what we need to try and extract from the status:
// 1. Who wrote the status
Account *gtsmodel.Account
// 2. Who is the status replying to
InReplyToAccount *gtsmodel.Account
// 3. Which accounts are mentioned (tagged) in the status
MentionedAccounts []*gtsmodel.Account
if getBoosted:
// 4. Who wrote the boosted status
BoostedAccount *gtsmodel.Account
// 5. If the boosted status replies to another account, who does it reply to?
BoostedInReplyToAccount *gtsmodel.Account
// 6. Who is mentioned (tagged) in the boosted status
BoostedMentionedAccounts []*gtsmodel.Account
*/
// 1. Account.
// Account might be set on the status already
if status.Account != nil {
// it was set
relAccts.Account = status.Account
} else {
// it wasn't set, so get it from the db
account, err := f.db.GetAccountByID(ctx, status.AccountID)
if err != nil {
return nil, fmt.Errorf("relevantAccounts: error getting account with id %s: %s", status.AccountID, err)
}
// set it on the status in case we need it further along
status.Account = account
// set it on relevant accounts
relAccts.Account = account
}
// 2. InReplyToAccount
// only get this if InReplyToAccountID is set
if status.InReplyToAccountID != "" {
// InReplyToAccount might be set on the status already
if status.InReplyToAccount != nil {
// it was set
relAccts.InReplyToAccount = status.InReplyToAccount
} else {
// it wasn't set, so get it from the db
inReplyToAccount, err := f.db.GetAccountByID(ctx, status.InReplyToAccountID)
if err != nil {
return nil, fmt.Errorf("relevantAccounts: error getting inReplyToAccount with id %s: %s", status.InReplyToAccountID, err)
}
// set it on the status in case we need it further along
status.InReplyToAccount = inReplyToAccount
// set it on relevant accounts
relAccts.InReplyToAccount = inReplyToAccount
}
}
// 3. MentionedAccounts
// First check if status.Mentions is populated with all mentions that correspond to status.MentionIDs
for _, mID := range status.MentionIDs {
if mID == "" {
continue
}
if !idIn(mID, status.Mentions) {
// mention with ID isn't in status.Mentions
mention, err := f.db.GetMention(ctx, mID)
if err != nil {
return nil, fmt.Errorf("relevantAccounts: error getting mention with id %s: %s", mID, err)
}
if mention == nil {
return nil, fmt.Errorf("relevantAccounts: mention with id %s was nil", mID)
}
status.Mentions = append(status.Mentions, mention)
}
}
// now filter mentions to make sure we only have mentions with a corresponding ID
nm := []*gtsmodel.Mention{}
for _, m := range status.Mentions {
if m == nil {
continue
}
if mentionIn(m, status.MentionIDs) {
nm = append(nm, m)
relAccts.MentionedAccounts = append(relAccts.MentionedAccounts, m.TargetAccount)
}
}
status.Mentions = nm
if len(status.Mentions) != len(status.MentionIDs) {
return nil, errors.New("relevantAccounts: mentions length did not correspond with mentionIDs length")
}
// if getBoosted is set, we should check the same properties on the boosted account as well
if getBoosted {
// 4, 5, 6. Boosted status items
// get the boosted status if it's not set on the status already
if status.BoostOfID != "" && status.BoostOf == nil {
boostedStatus, err := f.db.GetStatusByID(ctx, status.BoostOfID)
if err != nil {
return nil, fmt.Errorf("relevantAccounts: error getting boosted status with id %s: %s", status.BoostOfID, err)
}
status.BoostOf = boostedStatus
}
if status.BoostOf != nil {
// return relevant accounts for the boosted status
boostedRelAccts, err := f.relevantAccounts(ctx, status.BoostOf, false) // false because we don't want to recurse
if err != nil {
return nil, fmt.Errorf("relevantAccounts: error getting relevant accounts of boosted status %s: %s", status.BoostOf.ID, err)
}
relAccts.BoostedAccount = boostedRelAccts.Account
relAccts.BoostedInReplyToAccount = boostedRelAccts.InReplyToAccount
relAccts.BoostedMentionedAccounts = boostedRelAccts.MentionedAccounts
}
}
return relAccts, nil
}
// domainBlockedRelevant checks through all relevant accounts attached to a status
// to make sure none of them are domain blocked by this instance.
func (f *filter) domainBlockedRelevant(ctx context.Context, r *relevantAccounts) (bool, error) {
domains := []string{}
if r.Account != nil {
domains = append(domains, r.Account.Domain)
}
if r.InReplyToAccount != nil {
domains = append(domains, r.InReplyToAccount.Domain)
}
for _, a := range r.MentionedAccounts {
if a != nil {
domains = append(domains, a.Domain)
}
}
if r.BoostedAccount != nil {
domains = append(domains, r.BoostedAccount.Domain)
}
if r.BoostedInReplyToAccount != nil {
domains = append(domains, r.BoostedInReplyToAccount.Domain)
}
for _, a := range r.BoostedMentionedAccounts {
if a != nil {
domains = append(domains, a.Domain)
}
}
return f.db.AreDomainsBlocked(ctx, domains)
}
func idIn(id string, mentions []*gtsmodel.Mention) bool {
for _, m := range mentions {
if m == nil {
continue
}
if m.ID == id {
return true
}
}
return false
}
func mentionIn(mention *gtsmodel.Mention, ids []string) bool {
if mention == nil {
return false
}
for _, i := range ids {
if mention.ID == i {
return true
}
}
return false
}