gotosocial/internal/db/pg/pg.go
Tobi Smethurst 0df2e18cc0
Home timeline (#28)
* v. basic implementation of home timeline

* Go fmt ./...
2021-05-21 23:04:59 +02:00

1253 lines
41 KiB
Go

/*
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 pg
import (
"context"
"crypto/rand"
"crypto/rsa"
"errors"
"fmt"
"net"
"net/mail"
"regexp"
"strings"
"time"
"github.com/go-pg/pg/extra/pgdebug"
"github.com/go-pg/pg/v10"
"github.com/go-pg/pg/v10/orm"
"github.com/google/uuid"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/util"
"golang.org/x/crypto/bcrypt"
)
// postgresService satisfies the DB interface
type postgresService struct {
config *config.Config
conn *pg.DB
log *logrus.Logger
cancel context.CancelFunc
// federationDB pub.Database
}
// NewPostgresService returns a postgresService derived from the provided config, which implements the go-fed DB interface.
// Under the hood, it uses https://github.com/go-pg/pg to create and maintain a database connection.
func NewPostgresService(ctx context.Context, c *config.Config, log *logrus.Logger) (db.DB, error) {
opts, err := derivePGOptions(c)
if err != nil {
return nil, fmt.Errorf("could not create postgres service: %s", err)
}
log.Debugf("using pg options: %+v", opts)
// create a connection
pgCtx, cancel := context.WithCancel(ctx)
conn := pg.Connect(opts).WithContext(pgCtx)
// this will break the logfmt format we normally log in,
// since we can't choose where pg outputs to and it defaults to
// stdout. So use this option with care!
if log.GetLevel() >= logrus.TraceLevel {
conn.AddQueryHook(pgdebug.DebugHook{
// Print all queries.
Verbose: true,
})
}
// actually *begin* the connection so that we can tell if the db is there and listening
if err := conn.Ping(ctx); err != nil {
cancel()
return nil, fmt.Errorf("db connection error: %s", err)
}
// print out discovered postgres version
var version string
if _, err = conn.QueryOneContext(ctx, pg.Scan(&version), "SELECT version()"); err != nil {
cancel()
return nil, fmt.Errorf("db connection error: %s", err)
}
log.Infof("connected to postgres version: %s", version)
ps := &postgresService{
config: c,
conn: conn,
log: log,
cancel: cancel,
}
// we can confidently return this useable postgres service now
return ps, nil
}
/*
HANDY STUFF
*/
// derivePGOptions takes an application config and returns either a ready-to-use *pg.Options
// with sensible defaults, or an error if it's not satisfied by the provided config.
func derivePGOptions(c *config.Config) (*pg.Options, error) {
if strings.ToUpper(c.DBConfig.Type) != db.DBTypePostgres {
return nil, fmt.Errorf("expected db type of %s but got %s", db.DBTypePostgres, c.DBConfig.Type)
}
// validate port
if c.DBConfig.Port == 0 {
return nil, errors.New("no port set")
}
// validate address
if c.DBConfig.Address == "" {
return nil, errors.New("no address set")
}
ipv4Regex := regexp.MustCompile(`^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$`)
hostnameRegex := regexp.MustCompile(`^(?:[a-z0-9]+(?:-[a-z0-9]+)*\.)+[a-z]{2,}$`)
if !hostnameRegex.MatchString(c.DBConfig.Address) && !ipv4Regex.MatchString(c.DBConfig.Address) && c.DBConfig.Address != "localhost" {
return nil, fmt.Errorf("address %s was neither an ipv4 address nor a valid hostname", c.DBConfig.Address)
}
// validate username
if c.DBConfig.User == "" {
return nil, errors.New("no user set")
}
// validate that there's a password
if c.DBConfig.Password == "" {
return nil, errors.New("no password set")
}
// validate database
if c.DBConfig.Database == "" {
return nil, errors.New("no database set")
}
// We can rely on the pg library we're using to set
// sensible defaults for everything we don't set here.
options := &pg.Options{
Addr: fmt.Sprintf("%s:%d", c.DBConfig.Address, c.DBConfig.Port),
User: c.DBConfig.User,
Password: c.DBConfig.Password,
Database: c.DBConfig.Database,
ApplicationName: c.ApplicationName,
}
return options, nil
}
/*
BASIC DB FUNCTIONALITY
*/
func (ps *postgresService) CreateTable(i interface{}) error {
return ps.conn.Model(i).CreateTable(&orm.CreateTableOptions{
IfNotExists: true,
})
}
func (ps *postgresService) DropTable(i interface{}) error {
return ps.conn.Model(i).DropTable(&orm.DropTableOptions{
IfExists: true,
})
}
func (ps *postgresService) Stop(ctx context.Context) error {
ps.log.Info("closing db connection")
if err := ps.conn.Close(); err != nil {
// only cancel if there's a problem closing the db
ps.cancel()
return err
}
return nil
}
func (ps *postgresService) IsHealthy(ctx context.Context) error {
return ps.conn.Ping(ctx)
}
func (ps *postgresService) CreateSchema(ctx context.Context) error {
models := []interface{}{
(*gtsmodel.Account)(nil),
(*gtsmodel.Status)(nil),
(*gtsmodel.User)(nil),
}
ps.log.Info("creating db schema")
for _, model := range models {
err := ps.conn.Model(model).CreateTable(&orm.CreateTableOptions{
IfNotExists: true,
})
if err != nil {
return err
}
}
ps.log.Info("db schema created")
return nil
}
func (ps *postgresService) GetByID(id string, i interface{}) error {
if err := ps.conn.Model(i).Where("id = ?", id).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) GetWhere(where []db.Where, i interface{}) error {
if len(where) == 0 {
return errors.New("no queries provided")
}
q := ps.conn.Model(i)
for _, w := range where {
q = q.Where("? = ?", pg.Safe(w.Key), w.Value)
}
if err := q.Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
// func (ps *postgresService) GetWhereMany(i interface{}, where ...model.Where) error {
// return nil
// }
func (ps *postgresService) GetAll(i interface{}) error {
if err := ps.conn.Model(i).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) Put(i interface{}) error {
_, err := ps.conn.Model(i).Insert(i)
if err != nil && strings.Contains(err.Error(), "duplicate key value violates unique constraint") {
return db.ErrAlreadyExists{}
}
return err
}
func (ps *postgresService) Upsert(i interface{}, conflictColumn string) error {
if _, err := ps.conn.Model(i).OnConflict(fmt.Sprintf("(%s) DO UPDATE", conflictColumn)).Insert(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) UpdateByID(id string, i interface{}) error {
if _, err := ps.conn.Model(i).Where("id = ?", id).OnConflict("(id) DO UPDATE").Insert(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) UpdateOneByID(id string, key string, value interface{}, i interface{}) error {
_, err := ps.conn.Model(i).Set("? = ?", pg.Safe(key), value).Where("id = ?", id).Update()
return err
}
func (ps *postgresService) DeleteByID(id string, i interface{}) error {
if _, err := ps.conn.Model(i).Where("id = ?", id).Delete(); err != nil {
// if there are no rows *anyway* then that's fine
// just return err if there's an actual error
if err != pg.ErrNoRows {
return err
}
}
return nil
}
func (ps *postgresService) DeleteWhere(where []db.Where, i interface{}) error {
if len(where) == 0 {
return errors.New("no queries provided")
}
q := ps.conn.Model(i)
for _, w := range where {
q = q.Where("? = ?", pg.Safe(w.Key), w.Value)
}
if _, err := q.Delete(); err != nil {
// if there are no rows *anyway* then that's fine
// just return err if there's an actual error
if err != pg.ErrNoRows {
return err
}
}
return nil
}
/*
HANDY SHORTCUTS
*/
func (ps *postgresService) AcceptFollowRequest(originAccountID string, targetAccountID string) (*gtsmodel.Follow, error) {
// make sure the original follow request exists
fr := &gtsmodel.FollowRequest{}
if err := ps.conn.Model(fr).Where("account_id = ?", originAccountID).Where("target_account_id = ?", targetAccountID).Select(); err != nil {
if err == pg.ErrMultiRows {
return nil, db.ErrNoEntries{}
}
return nil, err
}
// create a new follow to 'replace' the request with
follow := &gtsmodel.Follow{
AccountID: originAccountID,
TargetAccountID: targetAccountID,
URI: fr.URI,
}
// if the follow already exists, just update the URI -- we don't need to do anything else
if _, err := ps.conn.Model(follow).OnConflict("ON CONSTRAINT follows_account_id_target_account_id_key DO UPDATE set uri = ?", follow.URI).Insert(); err != nil {
return nil, err
}
// now remove the follow request
if _, err := ps.conn.Model(&gtsmodel.FollowRequest{}).Where("account_id = ?", originAccountID).Where("target_account_id = ?", targetAccountID).Delete(); err != nil {
return nil, err
}
return follow, nil
}
func (ps *postgresService) CreateInstanceAccount() error {
username := ps.config.Host
key, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
ps.log.Errorf("error creating new rsa key: %s", err)
return err
}
newAccountURIs := util.GenerateURIsForAccount(username, ps.config.Protocol, ps.config.Host)
a := &gtsmodel.Account{
Username: ps.config.Host,
DisplayName: username,
URL: newAccountURIs.UserURL,
PrivateKey: key,
PublicKey: &key.PublicKey,
PublicKeyURI: newAccountURIs.PublicKeyURI,
ActorType: gtsmodel.ActivityStreamsPerson,
URI: newAccountURIs.UserURI,
InboxURI: newAccountURIs.InboxURI,
OutboxURI: newAccountURIs.OutboxURI,
FollowersURI: newAccountURIs.FollowersURI,
FollowingURI: newAccountURIs.FollowingURI,
FeaturedCollectionURI: newAccountURIs.CollectionURI,
}
inserted, err := ps.conn.Model(a).Where("username = ?", username).SelectOrInsert()
if err != nil {
return err
}
if inserted {
ps.log.Infof("created instance account %s with id %s", username, a.ID)
} else {
ps.log.Infof("instance account %s already exists with id %s", username, a.ID)
}
return nil
}
func (ps *postgresService) CreateInstanceInstance() error {
i := &gtsmodel.Instance{
Domain: ps.config.Host,
Title: ps.config.Host,
URI: fmt.Sprintf("%s://%s", ps.config.Protocol, ps.config.Host),
}
inserted, err := ps.conn.Model(i).Where("domain = ?", ps.config.Host).SelectOrInsert()
if err != nil {
return err
}
if inserted {
ps.log.Infof("created instance instance %s with id %s", ps.config.Host, i.ID)
} else {
ps.log.Infof("instance instance %s already exists with id %s", ps.config.Host, i.ID)
}
return nil
}
func (ps *postgresService) GetAccountByUserID(userID string, account *gtsmodel.Account) error {
user := &gtsmodel.User{
ID: userID,
}
if err := ps.conn.Model(user).Where("id = ?", userID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
if err := ps.conn.Model(account).Where("id = ?", user.AccountID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) GetLocalAccountByUsername(username string, account *gtsmodel.Account) error {
if err := ps.conn.Model(account).Where("username = ?", username).Where("? IS NULL", pg.Ident("domain")).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) GetFollowRequestsForAccountID(accountID string, followRequests *[]gtsmodel.FollowRequest) error {
if err := ps.conn.Model(followRequests).Where("target_account_id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return nil
}
return err
}
return nil
}
func (ps *postgresService) GetFollowingByAccountID(accountID string, following *[]gtsmodel.Follow) error {
if err := ps.conn.Model(following).Where("account_id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return nil
}
return err
}
return nil
}
func (ps *postgresService) GetFollowersByAccountID(accountID string, followers *[]gtsmodel.Follow) error {
if err := ps.conn.Model(followers).Where("target_account_id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return nil
}
return err
}
return nil
}
func (ps *postgresService) GetFavesByAccountID(accountID string, faves *[]gtsmodel.StatusFave) error {
if err := ps.conn.Model(faves).Where("account_id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return nil
}
return err
}
return nil
}
func (ps *postgresService) CountStatusesByAccountID(accountID string) (int, error) {
count, err := ps.conn.Model(&gtsmodel.Status{}).Where("account_id = ?", accountID).Count()
if err != nil {
if err == pg.ErrNoRows {
return 0, nil
}
return 0, err
}
return count, nil
}
func (ps *postgresService) GetStatusesByTimeDescending(accountID string, statuses *[]gtsmodel.Status, limit int, excludeReplies bool, maxID string, pinned bool, mediaOnly bool) error {
q := ps.conn.Model(statuses).Order("created_at DESC")
if accountID != "" {
q = q.Where("account_id = ?", accountID)
}
if limit != 0 {
q = q.Limit(limit)
}
if excludeReplies {
q = q.Where("? IS NULL", pg.Ident("in_reply_to_id"))
}
if pinned {
q = q.Where("pinned = ?", true)
}
if mediaOnly {
q = q.WhereGroup(func(q *pg.Query) (*pg.Query, error) {
return q.Where("? IS NOT NULL", pg.Ident("attachments")).Where("attachments != '{}'"), nil
})
}
if err := q.Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) GetLastStatusForAccountID(accountID string, status *gtsmodel.Status) error {
if err := ps.conn.Model(status).Order("created_at DESC").Limit(1).Where("account_id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) IsUsernameAvailable(username string) error {
// if no error we fail because it means we found something
// if error but it's not pg.ErrNoRows then we fail
// if err is pg.ErrNoRows we're good, we found nothing so continue
if err := ps.conn.Model(&gtsmodel.Account{}).Where("username = ?", username).Where("domain = ?", nil).Select(); err == nil {
return fmt.Errorf("username %s already in use", username)
} else if err != pg.ErrNoRows {
return fmt.Errorf("db error: %s", err)
}
return nil
}
func (ps *postgresService) IsEmailAvailable(email string) error {
// parse the domain from the email
m, err := mail.ParseAddress(email)
if err != nil {
return fmt.Errorf("error parsing email address %s: %s", email, err)
}
domain := strings.Split(m.Address, "@")[1] // domain will always be the second part after @
// check if the email domain is blocked
if err := ps.conn.Model(&gtsmodel.EmailDomainBlock{}).Where("domain = ?", domain).Select(); err == nil {
// fail because we found something
return fmt.Errorf("email domain %s is blocked", domain)
} else if err != pg.ErrNoRows {
// fail because we got an unexpected error
return fmt.Errorf("db error: %s", err)
}
// check if this email is associated with a user already
if err := ps.conn.Model(&gtsmodel.User{}).Where("email = ?", email).WhereOr("unconfirmed_email = ?", email).Select(); err == nil {
// fail because we found something
return fmt.Errorf("email %s already in use", email)
} else if err != pg.ErrNoRows {
// fail because we got an unexpected error
return fmt.Errorf("db error: %s", err)
}
return nil
}
func (ps *postgresService) NewSignup(username string, reason string, requireApproval bool, email string, password string, signUpIP net.IP, locale string, appID string) (*gtsmodel.User, error) {
key, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
ps.log.Errorf("error creating new rsa key: %s", err)
return nil, err
}
newAccountURIs := util.GenerateURIsForAccount(username, ps.config.Protocol, ps.config.Host)
a := &gtsmodel.Account{
Username: username,
DisplayName: username,
Reason: reason,
URL: newAccountURIs.UserURL,
PrivateKey: key,
PublicKey: &key.PublicKey,
PublicKeyURI: newAccountURIs.PublicKeyURI,
ActorType: gtsmodel.ActivityStreamsPerson,
URI: newAccountURIs.UserURI,
InboxURI: newAccountURIs.InboxURI,
OutboxURI: newAccountURIs.OutboxURI,
FollowersURI: newAccountURIs.FollowersURI,
FollowingURI: newAccountURIs.FollowingURI,
FeaturedCollectionURI: newAccountURIs.CollectionURI,
}
if _, err = ps.conn.Model(a).Insert(); err != nil {
return nil, err
}
pw, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
if err != nil {
return nil, fmt.Errorf("error hashing password: %s", err)
}
u := &gtsmodel.User{
AccountID: a.ID,
EncryptedPassword: string(pw),
SignUpIP: signUpIP,
Locale: locale,
UnconfirmedEmail: email,
CreatedByApplicationID: appID,
Approved: !requireApproval, // if we don't require moderator approval, just pre-approve the user
}
if _, err = ps.conn.Model(u).Insert(); err != nil {
return nil, err
}
return u, nil
}
func (ps *postgresService) SetHeaderOrAvatarForAccountID(mediaAttachment *gtsmodel.MediaAttachment, accountID string) error {
if mediaAttachment.Avatar && mediaAttachment.Header {
return errors.New("one media attachment cannot be both header and avatar")
}
var headerOrAVI string
if mediaAttachment.Avatar {
headerOrAVI = "avatar"
} else if mediaAttachment.Header {
headerOrAVI = "header"
} else {
return errors.New("given media attachment was neither a header nor an avatar")
}
// TODO: there are probably more side effects here that need to be handled
if _, err := ps.conn.Model(mediaAttachment).OnConflict("(id) DO UPDATE").Insert(); err != nil {
return err
}
if _, err := ps.conn.Model(&gtsmodel.Account{}).Set(fmt.Sprintf("%s_media_attachment_id = ?", headerOrAVI), mediaAttachment.ID).Where("id = ?", accountID).Update(); err != nil {
return err
}
return nil
}
func (ps *postgresService) GetHeaderForAccountID(header *gtsmodel.MediaAttachment, accountID string) error {
acct := &gtsmodel.Account{}
if err := ps.conn.Model(acct).Where("id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
if acct.HeaderMediaAttachmentID == "" {
return db.ErrNoEntries{}
}
if err := ps.conn.Model(header).Where("id = ?", acct.HeaderMediaAttachmentID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) GetAvatarForAccountID(avatar *gtsmodel.MediaAttachment, accountID string) error {
acct := &gtsmodel.Account{}
if err := ps.conn.Model(acct).Where("id = ?", accountID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
if acct.AvatarMediaAttachmentID == "" {
return db.ErrNoEntries{}
}
if err := ps.conn.Model(avatar).Where("id = ?", acct.AvatarMediaAttachmentID).Select(); err != nil {
if err == pg.ErrNoRows {
return db.ErrNoEntries{}
}
return err
}
return nil
}
func (ps *postgresService) Blocked(account1 string, account2 string) (bool, error) {
// TODO: check domain blocks as well
var blocked bool
if err := ps.conn.Model(&gtsmodel.Block{}).
Where("account_id = ?", account1).Where("target_account_id = ?", account2).
WhereOr("target_account_id = ?", account1).Where("account_id = ?", account2).
Select(); err != nil {
if err == pg.ErrNoRows {
blocked = false
return blocked, nil
}
return blocked, err
}
blocked = true
return blocked, nil
}
func (ps *postgresService) GetRelationship(requestingAccount string, targetAccount string) (*gtsmodel.Relationship, error) {
r := &gtsmodel.Relationship{
ID: targetAccount,
}
// check if the requesting account follows the target account
follow := &gtsmodel.Follow{}
if err := ps.conn.Model(follow).Where("account_id = ?", requestingAccount).Where("target_account_id = ?", targetAccount).Select(); err != nil {
if err != pg.ErrNoRows {
// a proper error
return nil, fmt.Errorf("getrelationship: error checking follow existence: %s", err)
}
// no follow exists so these are all false
r.Following = false
r.ShowingReblogs = false
r.Notifying = false
} else {
// follow exists so we can fill these fields out...
r.Following = true
r.ShowingReblogs = follow.ShowReblogs
r.Notifying = follow.Notify
}
// check if the target account follows the requesting account
followedBy, err := ps.conn.Model(&gtsmodel.Follow{}).Where("account_id = ?", targetAccount).Where("target_account_id = ?", requestingAccount).Exists()
if err != nil {
return nil, fmt.Errorf("getrelationship: error checking followed_by existence: %s", err)
}
r.FollowedBy = followedBy
// check if the requesting account blocks the target account
blocking, err := ps.conn.Model(&gtsmodel.Block{}).Where("account_id = ?", requestingAccount).Where("target_account_id = ?", targetAccount).Exists()
if err != nil {
return nil, fmt.Errorf("getrelationship: error checking blocking existence: %s", err)
}
r.Blocking = blocking
// check if the target account blocks the requesting account
blockedBy, err := ps.conn.Model(&gtsmodel.Block{}).Where("account_id = ?", targetAccount).Where("target_account_id = ?", requestingAccount).Exists()
if err != nil {
return nil, fmt.Errorf("getrelationship: error checking blocked existence: %s", err)
}
r.BlockedBy = blockedBy
// check if there's a pending following request from requesting account to target account
requested, err := ps.conn.Model(&gtsmodel.FollowRequest{}).Where("account_id = ?", requestingAccount).Where("target_account_id = ?", targetAccount).Exists()
if err != nil {
return nil, fmt.Errorf("getrelationship: error checking blocked existence: %s", err)
}
r.Requested = requested
return r, nil
}
func (ps *postgresService) StatusVisible(targetStatus *gtsmodel.Status, targetAccount *gtsmodel.Account, requestingAccount *gtsmodel.Account, relevantAccounts *gtsmodel.RelevantAccounts) (bool, error) {
l := ps.log.WithField("func", "StatusVisible")
// if target account is suspended then don't show the status
if !targetAccount.SuspendedAt.IsZero() {
l.Debug("target account suspended at is not zero")
return false, nil
}
// if the target user doesn't exist (anymore) then the status also shouldn't be visible
// note: we only do this for local users
if targetAccount.Domain == "" {
targetUser := &gtsmodel.User{}
if err := ps.conn.Model(targetUser).Where("account_id = ?", targetAccount.ID).Select(); err != nil {
l.Debug("target user could not be selected")
if err == pg.ErrNoRows {
return false, db.ErrNoEntries{}
}
return false, err
}
// if target user is disabled, not yet approved, or not confirmed then don't show the status
// (although in the latter two cases it's unlikely they posted a status yet anyway, but you never know!)
if targetUser.Disabled || !targetUser.Approved || targetUser.ConfirmedAt.IsZero() {
l.Debug("target user is disabled, not approved, or not confirmed")
return false, nil
}
}
// If requesting account is nil, that means whoever requested the status didn't auth, or their auth failed.
// In this case, we can still serve the status if it's public, otherwise we definitely shouldn't.
if requestingAccount == nil {
if targetStatus.Visibility == gtsmodel.VisibilityPublic {
return true, nil
}
l.Debug("requesting account is nil but the target status isn't public")
return false, nil
}
// if requesting account is suspended then don't show the status -- although they probably shouldn't have gotten
// this far (ie., been authed) in the first place: this is just for safety.
if !requestingAccount.SuspendedAt.IsZero() {
l.Debug("requesting account is suspended")
return false, nil
}
// check if we have a local account -- if so we can check the user for that account in the DB
if requestingAccount.Domain == "" {
requestingUser := &gtsmodel.User{}
if err := ps.conn.Model(requestingUser).Where("account_id = ?", requestingAccount.ID).Select(); err != nil {
// if the requesting account is local but doesn't have a corresponding user in the db this is a problem
if err == pg.ErrNoRows {
l.Debug("requesting account is local but there's no corresponding user")
return false, nil
}
l.Debugf("requesting account is local but there was an error getting the corresponding user: %s", err)
return false, err
}
// okay, user exists, so make sure it has full privileges/is confirmed/approved
if requestingUser.Disabled || !requestingUser.Approved || requestingUser.ConfirmedAt.IsZero() {
l.Debug("requesting account is local but corresponding user is either disabled, not approved, or not confirmed")
return false, nil
}
}
// if the target status belongs to the requesting account, they should always be able to view it at this point
if targetStatus.AccountID == requestingAccount.ID {
return true, nil
}
// At this point we have a populated targetAccount, targetStatus, and requestingAccount, so we can check for blocks and whathaveyou
// First check if a block exists directly between the target account (which authored the status) and the requesting account.
if blocked, err := ps.Blocked(targetAccount.ID, requestingAccount.ID); err != nil {
l.Debugf("something went wrong figuring out if the accounts have a block: %s", err)
return false, err
} else if blocked {
// don't allow the status to be viewed if a block exists in *either* direction between these two accounts, no creepy stalking please
l.Debug("a block exists between requesting account and target account")
return false, nil
}
// check other accounts mentioned/boosted by/replied to by the status, if they exist
if relevantAccounts != nil {
// status replies to account id
if relevantAccounts.ReplyToAccount != nil {
if blocked, err := ps.Blocked(relevantAccounts.ReplyToAccount.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and reply to account")
return false, nil
}
}
// status boosts accounts id
if relevantAccounts.BoostedAccount != nil {
if blocked, err := ps.Blocked(relevantAccounts.BoostedAccount.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and boosted account")
return false, nil
}
}
// status boosts a reply to account id
if relevantAccounts.BoostedReplyToAccount != nil {
if blocked, err := ps.Blocked(relevantAccounts.BoostedReplyToAccount.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and boosted reply to account")
return false, nil
}
}
// status mentions accounts
for _, a := range relevantAccounts.MentionedAccounts {
if blocked, err := ps.Blocked(a.ID, requestingAccount.ID); err != nil {
return false, err
} else if blocked {
l.Debug("a block exists between requesting account and a mentioned account")
return false, nil
}
}
// if the requesting account is mentioned in the status it should always be visible
for _, acct := range relevantAccounts.MentionedAccounts {
if acct.ID == requestingAccount.ID {
return true, nil // yep it's mentioned!
}
}
}
// at this point we know neither account blocks the other, or another account mentioned or otherwise referred to in the status
// that means it's now just a matter of checking the visibility settings of the status itself
switch targetStatus.Visibility {
case gtsmodel.VisibilityPublic, gtsmodel.VisibilityUnlocked:
// no problem here, just return OK
return true, nil
case gtsmodel.VisibilityFollowersOnly:
// check one-way follow
follows, err := ps.Follows(requestingAccount, targetAccount)
if err != nil {
return false, err
}
if !follows {
l.Debug("requested status is followers only but requesting account is not a follower")
return false, nil
}
return true, nil
case gtsmodel.VisibilityMutualsOnly:
// check mutual follow
mutuals, err := ps.Mutuals(requestingAccount, targetAccount)
if err != nil {
return false, err
}
if !mutuals {
l.Debug("requested status is mutuals only but accounts aren't mufos")
return false, nil
}
return true, nil
case gtsmodel.VisibilityDirect:
l.Debug("requesting account requests a status it's not mentioned in")
return false, nil // it's not mentioned -_-
}
return false, errors.New("reached the end of StatusVisible with no result")
}
func (ps *postgresService) Follows(sourceAccount *gtsmodel.Account, targetAccount *gtsmodel.Account) (bool, error) {
return ps.conn.Model(&gtsmodel.Follow{}).Where("account_id = ?", sourceAccount.ID).Where("target_account_id = ?", targetAccount.ID).Exists()
}
func (ps *postgresService) FollowRequested(sourceAccount *gtsmodel.Account, targetAccount *gtsmodel.Account) (bool, error) {
return ps.conn.Model(&gtsmodel.FollowRequest{}).Where("account_id = ?", sourceAccount.ID).Where("target_account_id = ?", targetAccount.ID).Exists()
}
func (ps *postgresService) Mutuals(account1 *gtsmodel.Account, account2 *gtsmodel.Account) (bool, error) {
// make sure account 1 follows account 2
f1, err := ps.conn.Model(&gtsmodel.Follow{}).Where("account_id = ?", account1.ID).Where("target_account_id = ?", account2.ID).Exists()
if err != nil {
if err == pg.ErrNoRows {
return false, nil
}
return false, err
}
// make sure account 2 follows account 1
f2, err := ps.conn.Model(&gtsmodel.Follow{}).Where("account_id = ?", account2.ID).Where("target_account_id = ?", account1.ID).Exists()
if err != nil {
if err == pg.ErrNoRows {
return false, nil
}
return false, err
}
return f1 && f2, nil
}
func (ps *postgresService) PullRelevantAccountsFromStatus(targetStatus *gtsmodel.Status) (*gtsmodel.RelevantAccounts, error) {
accounts := &gtsmodel.RelevantAccounts{
MentionedAccounts: []*gtsmodel.Account{},
}
// get the replied to account from the status and add it to the pile
if targetStatus.InReplyToAccountID != "" {
repliedToAccount := &gtsmodel.Account{}
if err := ps.conn.Model(repliedToAccount).Where("id = ?", targetStatus.InReplyToAccountID).Select(); err != nil {
return accounts, err
}
accounts.ReplyToAccount = repliedToAccount
}
// get the boosted account from the status and add it to the pile
if targetStatus.BoostOfID != "" {
// retrieve the boosted status first
boostedStatus := &gtsmodel.Status{}
if err := ps.conn.Model(boostedStatus).Where("id = ?", targetStatus.BoostOfID).Select(); err != nil {
return accounts, err
}
boostedAccount := &gtsmodel.Account{}
if err := ps.conn.Model(boostedAccount).Where("id = ?", boostedStatus.AccountID).Select(); err != nil {
return accounts, err
}
accounts.BoostedAccount = boostedAccount
// the boosted status might be a reply to another account so we should get that too
if boostedStatus.InReplyToAccountID != "" {
boostedStatusRepliedToAccount := &gtsmodel.Account{}
if err := ps.conn.Model(boostedStatusRepliedToAccount).Where("id = ?", boostedStatus.InReplyToAccountID).Select(); err != nil {
return accounts, err
}
accounts.BoostedReplyToAccount = boostedStatusRepliedToAccount
}
}
// now get all accounts with IDs that are mentioned in the status
for _, mentionID := range targetStatus.Mentions {
mention := &gtsmodel.Mention{}
if err := ps.conn.Model(mention).Where("id = ?", mentionID).Select(); err != nil {
return accounts, fmt.Errorf("error getting mention with id %s: %s", mentionID, err)
}
mentionedAccount := &gtsmodel.Account{}
if err := ps.conn.Model(mentionedAccount).Where("id = ?", mention.TargetAccountID).Select(); err != nil {
return accounts, fmt.Errorf("error getting mentioned account: %s", err)
}
accounts.MentionedAccounts = append(accounts.MentionedAccounts, mentionedAccount)
}
return accounts, nil
}
func (ps *postgresService) GetReplyCountForStatus(status *gtsmodel.Status) (int, error) {
return ps.conn.Model(&gtsmodel.Status{}).Where("in_reply_to_id = ?", status.ID).Count()
}
func (ps *postgresService) GetReblogCountForStatus(status *gtsmodel.Status) (int, error) {
return ps.conn.Model(&gtsmodel.Status{}).Where("boost_of_id = ?", status.ID).Count()
}
func (ps *postgresService) GetFaveCountForStatus(status *gtsmodel.Status) (int, error) {
return ps.conn.Model(&gtsmodel.StatusFave{}).Where("status_id = ?", status.ID).Count()
}
func (ps *postgresService) StatusFavedBy(status *gtsmodel.Status, accountID string) (bool, error) {
return ps.conn.Model(&gtsmodel.StatusFave{}).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Exists()
}
func (ps *postgresService) StatusRebloggedBy(status *gtsmodel.Status, accountID string) (bool, error) {
return ps.conn.Model(&gtsmodel.Status{}).Where("boost_of_id = ?", status.ID).Where("account_id = ?", accountID).Exists()
}
func (ps *postgresService) StatusMutedBy(status *gtsmodel.Status, accountID string) (bool, error) {
return ps.conn.Model(&gtsmodel.StatusMute{}).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Exists()
}
func (ps *postgresService) StatusBookmarkedBy(status *gtsmodel.Status, accountID string) (bool, error) {
return ps.conn.Model(&gtsmodel.StatusBookmark{}).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Exists()
}
func (ps *postgresService) FaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error) {
// first check if a fave already exists, we can just return if so
existingFave := &gtsmodel.StatusFave{}
err := ps.conn.Model(existingFave).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Select()
if err == nil {
// fave already exists so just return nothing at all
return nil, nil
}
// an error occurred so it might exist or not, we don't know
if err != pg.ErrNoRows {
return nil, err
}
// it doesn't exist so create it
newFave := &gtsmodel.StatusFave{
AccountID: accountID,
TargetAccountID: status.AccountID,
StatusID: status.ID,
}
if _, err = ps.conn.Model(newFave).Insert(); err != nil {
return nil, err
}
return newFave, nil
}
func (ps *postgresService) UnfaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error) {
// if a fave doesn't exist, we don't need to do anything
existingFave := &gtsmodel.StatusFave{}
err := ps.conn.Model(existingFave).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Select()
// the fave doesn't exist so return nothing at all
if err == pg.ErrNoRows {
return nil, nil
}
// an error occurred so it might exist or not, we don't know
if err != nil && err != pg.ErrNoRows {
return nil, err
}
// the fave exists so remove it
if _, err = ps.conn.Model(&gtsmodel.StatusFave{}).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Delete(); err != nil {
return nil, err
}
return existingFave, nil
}
func (ps *postgresService) WhoFavedStatus(status *gtsmodel.Status) ([]*gtsmodel.Account, error) {
accounts := []*gtsmodel.Account{}
faves := []*gtsmodel.StatusFave{}
if err := ps.conn.Model(&faves).Where("status_id = ?", status.ID).Select(); err != nil {
if err == pg.ErrNoRows {
return accounts, nil // no rows just means nobody has faved this status, so that's fine
}
return nil, err // an actual error has occurred
}
for _, f := range faves {
acc := &gtsmodel.Account{}
if err := ps.conn.Model(acc).Where("id = ?", f.AccountID).Select(); err != nil {
if err == pg.ErrNoRows {
continue // the account doesn't exist for some reason??? but this isn't the place to worry about that so just skip it
}
return nil, err // an actual error has occurred
}
accounts = append(accounts, acc)
}
return accounts, nil
}
func (ps *postgresService) GetHomeTimelineForAccount(accountID string, maxID string, sinceID string, minID string, limit int, local bool) ([]*gtsmodel.Status, error) {
statuses := []*gtsmodel.Status{}
q := ps.conn.Model(&statuses).
ColumnExpr("status.*").
Join("JOIN follows AS f ON f.target_account_id = status.account_id").
Where("f.account_id = ?", accountID).
Limit(limit).
Order("status.created_at DESC")
err := q.Select()
if err != nil {
if err != pg.ErrNoRows {
return nil, err
}
}
return statuses, nil
}
/*
CONVERSION FUNCTIONS
*/
func (ps *postgresService) MentionStringsToMentions(targetAccounts []string, originAccountID string, statusID string) ([]*gtsmodel.Mention, error) {
ogAccount := &gtsmodel.Account{}
if err := ps.conn.Model(ogAccount).Where("id = ?", originAccountID).Select(); err != nil {
return nil, err
}
menchies := []*gtsmodel.Mention{}
for _, a := range targetAccounts {
// A mentioned account looks like "@test@example.org" or just "@test" for a local account
// -- we can guarantee this from the regex that targetAccounts should have been derived from.
// But we still need to do a bit of fiddling to get what we need here -- the username and domain (if given).
// 1. trim off the first @
t := strings.TrimPrefix(a, "@")
// 2. split the username and domain
s := strings.Split(t, "@")
// 3. if it's length 1 it's a local account, length 2 means remote, anything else means something is wrong
var local bool
switch len(s) {
case 1:
local = true
case 2:
local = false
default:
return nil, fmt.Errorf("mentioned account format '%s' was not valid", a)
}
var username, domain string
username = s[0]
if !local {
domain = s[1]
}
// 4. check we now have a proper username and domain
if username == "" || (!local && domain == "") {
return nil, fmt.Errorf("username or domain for '%s' was nil", a)
}
// okay we're good now, we can start pulling accounts out of the database
mentionedAccount := &gtsmodel.Account{}
var err error
if local {
// local user -- should have a null domain
err = ps.conn.Model(mentionedAccount).Where("username = ?", username).Where("? IS NULL", pg.Ident("domain")).Select()
} else {
// remote user -- should have domain defined
err = ps.conn.Model(mentionedAccount).Where("username = ?", username).Where("? = ?", pg.Ident("domain"), domain).Select()
}
if err != nil {
if err == pg.ErrNoRows {
// no result found for this username/domain so just don't include it as a mencho and carry on about our business
ps.log.Debugf("no account found with username '%s' and domain '%s', skipping it", username, domain)
continue
}
// a serious error has happened so bail
return nil, fmt.Errorf("error getting account with username '%s' and domain '%s': %s", username, domain, err)
}
// id, createdAt and updatedAt will be populated by the db, so we have everything we need!
menchies = append(menchies, &gtsmodel.Mention{
StatusID: statusID,
OriginAccountID: ogAccount.ID,
OriginAccountURI: ogAccount.URI,
TargetAccountID: mentionedAccount.ID,
NameString: a,
MentionedAccountURI: mentionedAccount.URI,
GTSAccount: mentionedAccount,
})
}
return menchies, nil
}
func (ps *postgresService) TagStringsToTags(tags []string, originAccountID string, statusID string) ([]*gtsmodel.Tag, error) {
newTags := []*gtsmodel.Tag{}
for _, t := range tags {
tag := &gtsmodel.Tag{}
// we can use selectorinsert here to create the new tag if it doesn't exist already
// inserted will be true if this is a new tag we just created
if err := ps.conn.Model(tag).Where("name = ?", t).Select(); err != nil {
if err == pg.ErrNoRows {
// tag doesn't exist yet so populate it
tag.ID = uuid.NewString()
tag.Name = t
tag.FirstSeenFromAccountID = originAccountID
tag.CreatedAt = time.Now()
tag.UpdatedAt = time.Now()
tag.Useable = true
tag.Listable = true
} else {
return nil, fmt.Errorf("error getting tag with name %s: %s", t, err)
}
}
// bail already if the tag isn't useable
if !tag.Useable {
continue
}
tag.LastStatusAt = time.Now()
newTags = append(newTags, tag)
}
return newTags, nil
}
func (ps *postgresService) EmojiStringsToEmojis(emojis []string, originAccountID string, statusID string) ([]*gtsmodel.Emoji, error) {
newEmojis := []*gtsmodel.Emoji{}
for _, e := range emojis {
emoji := &gtsmodel.Emoji{}
err := ps.conn.Model(emoji).Where("shortcode = ?", e).Where("visible_in_picker = true").Where("disabled = false").Select()
if err != nil {
if err == pg.ErrNoRows {
// no result found for this username/domain so just don't include it as an emoji and carry on about our business
ps.log.Debugf("no emoji found with shortcode %s, skipping it", e)
continue
}
// a serious error has happened so bail
return nil, fmt.Errorf("error getting emoji with shortcode %s: %s", e, err)
}
newEmojis = append(newEmojis, emoji)
}
return newEmojis, nil
}