gotosocial/internal/message/searchprocess.go

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/*
GoToSocial
Copyright (C) 2021 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 message
import (
"errors"
"net/url"
"strings"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
func (p *processor) SearchGet(authed *oauth.Auth, searchQuery *apimodel.SearchQuery) (*apimodel.SearchResult, ErrorWithCode) {
results := &apimodel.SearchResult{
Accounts: []apimodel.Account{},
Statuses: []apimodel.Status{},
Hashtags: []apimodel.Tag{},
}
foundAccounts := []*gtsmodel.Account{}
foundStatuses := []*gtsmodel.Status{}
// foundHashtags := []*gtsmodel.Tag{}
// convert the query to lowercase and trim leading/trailing spaces
query := strings.ToLower(strings.TrimSpace(searchQuery.Query))
// check if the query is a URI and just do a lookup for that, straight up
if uri, err := url.Parse(query); err == nil {
// 1. check if it's a status
foundStatus, err := p.searchStatusByURI(authed, uri, searchQuery.Resolve)
if err != nil {
return nil, NewErrorInternalError(err)
}
if foundStatus != nil {
foundStatuses = append(foundStatuses, foundStatus)
}
// 2. check if it's an account
foundAccount, err := p.searchAccountByURI(authed, uri, searchQuery.Resolve)
if err != nil {
return nil, NewErrorInternalError(err)
}
if foundAccount != nil {
foundAccounts = append(foundAccounts, foundAccount)
}
}
// check if the query is something like @whatever_username@example.org -- this means it's a remote account
if util.IsMention(searchQuery.Query) {
foundAccount, err := p.searchAccountByMention(authed, searchQuery.Query, searchQuery.Resolve)
if err != nil {
return nil, NewErrorInternalError(err)
}
if foundAccount != nil {
foundAccounts = append(foundAccounts, foundAccount)
}
}
/*
FROM HERE ON we have our search results, it's just a matter of filtering them according to what this user is allowed to see,
and then converting them into our frontend format.
*/
for _, foundAccount := range foundAccounts {
// make sure there's no block in either direction between the account and the requester
if blocked, err := p.db.Blocked(authed.Account.ID, foundAccount.ID); err == nil && !blocked {
// all good, convert it and add it to the results
acctMasto, err := p.tc.AccountToMastoPublic(foundAccount)
if err != nil {
return nil, NewErrorInternalError(err)
}
results.Accounts = append(results.Accounts, *acctMasto)
}
}
for _, foundStatus := range foundStatuses {
statusOwner := &gtsmodel.Account{}
if err := p.db.GetByID(foundStatus.AccountID, statusOwner); err != nil {
continue
}
relevantAccounts, err := p.db.PullRelevantAccountsFromStatus(foundStatus)
if err != nil {
continue
}
if visible, err := p.db.StatusVisible(foundStatus, statusOwner, authed.Account, relevantAccounts); !visible || err != nil {
continue
}
statusMasto, err := p.tc.StatusToMasto(foundStatus, statusOwner, authed.Account, relevantAccounts.BoostedAccount, relevantAccounts.ReplyToAccount, nil)
if err != nil {
continue
}
results.Statuses = append(results.Statuses, *statusMasto)
}
return results, nil
}
func (p *processor) searchStatusByURI(authed *oauth.Auth, uri *url.URL, resolve bool) (foundStatus *gtsmodel.Status, err error) {
// 1. check if it's a status
maybeStatus := &gtsmodel.Status{}
if err = p.db.GetWhere([]db.Where{{Key: "uri", Value: uri.String(), CaseInsensitive: true}}, maybeStatus); err == nil {
// we have it and it's a status
foundStatus = maybeStatus
return
} else if err = p.db.GetWhere([]db.Where{{Key: "url", Value: uri.String(), CaseInsensitive: true}}, maybeStatus); err == nil {
// we have it and it's a status
foundStatus = maybeStatus
return
}
// we don't have it locally so dereference it if we're allowed to
if resolve {
statusable, err := p.federator.DereferenceRemoteStatus(authed.Account.Username, uri)
if err == nil {
// it IS a status!
// extract the status owner's IRI from the statusable
var statusOwnerURI *url.URL
statusAttributedTo := statusable.GetActivityStreamsAttributedTo()
for i := statusAttributedTo.Begin(); i != statusAttributedTo.End(); i = i.Next() {
if i.IsIRI() {
statusOwnerURI = i.GetIRI()
break
}
}
if statusOwnerURI == nil {
return nil, NewErrorInternalError(errors.New("couldn't extract ownerAccountURI from statusable"))
}
// make sure the status owner exists in the db by searching for it
_, err := p.searchAccountByURI(authed, statusOwnerURI, resolve)
if err != nil {
return nil, err
}
// we have the status owner, we have the dereferenced status, so now we should finish dereferencing the status properly
// first turn it into a gtsmodel.Status
status, err := p.tc.ASStatusToStatus(statusable)
if err != nil {
return nil, NewErrorInternalError(err)
}
// put it in the DB so it gets a UUID
if err := p.db.Put(status); err != nil {
return nil, NewErrorInternalError(err)
}
// properly dereference everything in the status (media attachments etc)
if err := p.dereferenceStatusFields(status, authed.Account.Username); err != nil {
return nil, NewErrorInternalError(err)
}
// update with the nicely dereferenced status
if err := p.db.UpdateByID(status.ID, status); err != nil {
return nil, NewErrorInternalError(err)
}
foundStatus = status
}
}
return
}
func (p *processor) searchAccountByURI(authed *oauth.Auth, uri *url.URL, resolve bool) (foundAccount *gtsmodel.Account, err error) {
maybeAccount := &gtsmodel.Account{}
if err = p.db.GetWhere([]db.Where{{Key: "uri", Value: uri.String(), CaseInsensitive: true}}, maybeAccount); err == nil {
// we have it and it's an account
foundAccount = maybeAccount
return
} else if err = p.db.GetWhere([]db.Where{{Key: "url", Value: uri.String(), CaseInsensitive: true}}, maybeAccount); err == nil {
// we have it and it's an account
foundAccount = maybeAccount
return
}
if resolve {
// we don't have it locally so try and dereference it
accountable, err := p.federator.DereferenceRemoteAccount(authed.Account.Username, uri)
if err == nil {
// it IS an account!
account, err := p.tc.ASRepresentationToAccount(accountable, false)
if err != nil {
return nil, NewErrorInternalError(err)
}
if err := p.db.Put(account); err != nil {
return nil, NewErrorInternalError(err)
}
if err := p.dereferenceAccountFields(account, authed.Account.Username, false); err != nil {
return nil, NewErrorInternalError(err)
}
foundAccount = account
}
}
return
}
func (p *processor) searchAccountByMention(authed *oauth.Auth, mention string, resolve bool) (foundAccount *gtsmodel.Account, err error) {
// query is for a remote account
username, domain, err := util.ExtractMentionParts(mention)
if err != nil {
return nil, NewErrorBadRequest(err)
}
// if it's a local account we can skip a whole bunch of stuff
maybeAcct := &gtsmodel.Account{}
if domain == p.config.Host {
if err = p.db.GetLocalAccountByUsername(username, maybeAcct); err != nil {
return
}
foundAccount = maybeAcct
return
}
// it's not a local account so first we'll check if it's in the database already...
where := []db.Where{
{Key: "username", Value: username, CaseInsensitive: true},
{Key: "domain", Value: domain, CaseInsensitive: true},
}
err = p.db.GetWhere(where, maybeAcct)
if err == nil {
// we've got it stored locally already!
foundAccount = maybeAcct
return
}
if _, ok := err.(db.ErrNoEntries); !ok {
// if it's not errNoEntries there's been a real database error so bail at this point
return nil, NewErrorInternalError(err)
}
// we got a db.ErrNoEntries, so we just don't have the account locally stored -- check if we can dereference it
if resolve {
// we're allowed to resolve it so let's try
// first we need to webfinger the remote account to convert the username and domain into the activitypub URI for the account
acctURI, err := p.federator.FingerRemoteAccount(authed.Account.Username, username, domain)
if err != nil {
// something went wrong doing the webfinger lookup so we can't process the request
return nil, NewErrorInternalError(err)
}
// dereference the account based on the URI we retrieved from the webfinger lookup
accountable, err := p.federator.DereferenceRemoteAccount(authed.Account.Username, acctURI)
if err != nil {
// something went wrong doing the dereferencing so we can't process the request
return nil, NewErrorInternalError(err)
}
// convert the dereferenced account to the gts model of that account
foundAccount, err = p.tc.ASRepresentationToAccount(accountable, false)
if err != nil {
// something went wrong doing the conversion to a gtsmodel.Account so we can't process the request
return nil, NewErrorInternalError(err)
}
// put this new account in our database
if err := p.db.Put(foundAccount); err != nil {
return nil, NewErrorInternalError(err)
}
// properly dereference all the fields on the account immediately
if err := p.dereferenceAccountFields(foundAccount, authed.Account.Username, true); err != nil {
return nil, NewErrorInternalError(err)
}
}
return
}