gotosocial/internal/processing/search.go

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/*
GoToSocial
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Copyright (C) 2021-2022 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 processing
import (
"context"
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"fmt"
"net/url"
"strings"
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"github.com/sirupsen/logrus"
"github.com/spf13/viper"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
func (p *processor) SearchGet(ctx context.Context, authed *oauth.Auth, searchQuery *apimodel.SearchQuery) (*apimodel.SearchResult, gtserror.WithCode) {
l := logrus.WithFields(logrus.Fields{
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"func": "SearchGet",
"query": searchQuery.Query,
})
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))
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var foundOne bool
// check if the query is something like @whatever_username@example.org -- this means it's a remote account
if _, domain, err := util.ExtractMentionParts(searchQuery.Query); err == nil && domain != "" {
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l.Debug("search term is a mention, looking it up...")
foundAccount, err := p.searchAccountByMention(ctx, authed, searchQuery.Query, searchQuery.Resolve)
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if err == nil && foundAccount != nil {
foundAccounts = append(foundAccounts, foundAccount)
foundOne = true
l.Debug("got an account by searching by mention")
}
}
// check if the query is a URI and just do a lookup for that, straight up
if !foundOne {
if uri, err := url.Parse(query); err == nil {
// 1. check if it's a status
if foundStatus, err := p.searchStatusByURI(ctx, authed, uri, searchQuery.Resolve); err == nil && foundStatus != nil {
foundStatuses = append(foundStatuses, foundStatus)
l.Debug("got a status by searching by URI")
}
// 2. check if it's an account
if foundAccount, err := p.searchAccountByURI(ctx, authed, uri, searchQuery.Resolve); err == nil && foundAccount != nil {
foundAccounts = append(foundAccounts, foundAccount)
l.Debug("got an account by searching by URI")
}
}
}
/*
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.IsBlocked(ctx, authed.Account.ID, foundAccount.ID, true); err == nil && !blocked {
// all good, convert it and add it to the results
if apiAcct, err := p.tc.AccountToAPIAccountPublic(ctx, foundAccount); err == nil && apiAcct != nil {
results.Accounts = append(results.Accounts, *apiAcct)
}
}
}
for _, foundStatus := range foundStatuses {
if visible, err := p.filter.StatusVisible(ctx, foundStatus, authed.Account); !visible || err != nil {
continue
}
apiStatus, err := p.tc.StatusToAPIStatus(ctx, foundStatus, authed.Account)
if err != nil {
continue
}
results.Statuses = append(results.Statuses, *apiStatus)
}
return results, nil
}
func (p *processor) searchStatusByURI(ctx context.Context, authed *oauth.Auth, uri *url.URL, resolve bool) (*gtsmodel.Status, error) {
l := logrus.WithFields(logrus.Fields{
"func": "searchStatusByURI",
"uri": uri.String(),
"resolve": resolve,
})
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if maybeStatus, err := p.db.GetStatusByURI(ctx, uri.String()); err == nil {
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return maybeStatus, nil
} else if maybeStatus, err := p.db.GetStatusByURL(ctx, uri.String()); err == nil {
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return maybeStatus, nil
}
// we don't have it locally so dereference it if we're allowed to
if resolve {
status, _, _, err := p.federator.GetRemoteStatus(ctx, authed.Account.Username, uri, true, true)
if err == nil {
if err := p.federator.DereferenceRemoteThread(ctx, authed.Account.Username, uri); err != nil {
// try to deref the thread while we're here
l.Debugf("searchStatusByURI: error dereferencing remote thread: %s", err)
}
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return status, nil
}
}
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return nil, nil
}
func (p *processor) searchAccountByURI(ctx context.Context, authed *oauth.Auth, uri *url.URL, resolve bool) (*gtsmodel.Account, error) {
if maybeAccount, err := p.db.GetAccountByURI(ctx, uri.String()); err == nil {
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return maybeAccount, nil
} else if maybeAccount, err := p.db.GetAccountByURL(ctx, uri.String()); err == nil {
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return maybeAccount, nil
}
if resolve {
// we don't have it locally so try and dereference it
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account, err := p.federator.GetRemoteAccount(ctx, authed.Account.Username, uri, true, true)
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if err != nil {
return nil, fmt.Errorf("searchAccountByURI: error dereferencing account with uri %s: %s", uri.String(), err)
}
return account, nil
}
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return nil, nil
}
func (p *processor) searchAccountByMention(ctx context.Context, authed *oauth.Auth, mention string, resolve bool) (*gtsmodel.Account, error) {
// query is for a remote account
username, domain, err := util.ExtractMentionParts(mention)
if err != nil {
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return nil, fmt.Errorf("searchAccountByMention: error extracting mention parts: %s", err)
}
// if it's a local account we can skip a whole bunch of stuff
maybeAcct := &gtsmodel.Account{}
host := viper.GetString(config.Keys.Host)
if domain == host {
maybeAcct, err = p.db.GetLocalAccountByUsername(ctx, username)
if err != nil {
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return nil, fmt.Errorf("searchAccountByMention: error getting local account by username: %s", err)
}
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return maybeAcct, nil
}
// 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(ctx, where, maybeAcct)
if err == nil {
// we've got it stored locally already!
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return maybeAcct, nil
}
if err != db.ErrNoEntries {
// if it's not errNoEntries there's been a real database error so bail at this point
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return nil, fmt.Errorf("searchAccountByMention: database error: %s", 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(ctx, authed.Account.Username, username, domain)
if err != nil {
// something went wrong doing the webfinger lookup so we can't process the request
return nil, fmt.Errorf("error fingering remote account with username %s and domain %s: %s", username, domain, err)
}
// return the attempt to get the remove account
return p.federator.GetRemoteAccount(ctx, authed.Account.Username, acctURI, true, true)
}
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return nil, nil
}