298 lines
9.2 KiB
Go
298 lines
9.2 KiB
Go
package common
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import (
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"database/sql"
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"errors"
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"log"
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"strconv"
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"../query_gen/lib"
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"golang.org/x/crypto/bcrypt"
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)
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// TODO: Add the watchdog goroutine
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// TODO: Add some sort of update method
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var Users UserStore
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var ErrAccountExists = errors.New("this username is already in use")
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var ErrLongUsername = errors.New("this username is too long")
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type UserStore interface {
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DirtyGet(id int) *User
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Get(id int) (*User, error)
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Exists(id int) bool
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GetOffset(offset int, perPage int) (users []*User, err error)
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//BulkGet(ids []int) ([]*User, error)
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BulkGetMap(ids []int) (map[int]*User, error)
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BypassGet(id int) (*User, error)
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Create(username string, password string, email string, group int, active bool) (int, error)
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Reload(id int) error
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GlobalCount() int
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SetCache(cache UserCache)
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GetCache() UserCache
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}
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type DefaultUserStore struct {
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cache UserCache
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get *sql.Stmt
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getOffset *sql.Stmt
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exists *sql.Stmt
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register *sql.Stmt
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usernameExists *sql.Stmt
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userCount *sql.Stmt
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}
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// NewDefaultUserStore gives you a new instance of DefaultUserStore
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func NewDefaultUserStore(cache UserCache) (*DefaultUserStore, error) {
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acc := qgen.NewAcc()
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if cache == nil {
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cache = NewNullUserCache()
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}
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// TODO: Add an admin version of registerStmt with more flexibility?
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return &DefaultUserStore{
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cache: cache,
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get: acc.SimpleSelect("users", "name, group, active, is_super_admin, session, email, avatar, message, url_prefix, url_name, level, score, liked, last_ip, temp_group", "uid = ?", "", ""),
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getOffset: acc.Select("users").Columns("uid, name, group, active, is_super_admin, session, email, avatar, message, url_prefix, url_name, level, score, liked, last_ip, temp_group").Orderby("uid ASC").Limit("?,?").Prepare(),
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exists: acc.SimpleSelect("users", "uid", "uid = ?", "", ""),
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register: acc.SimpleInsert("users", "name, email, password, salt, group, is_super_admin, session, active, message, createdAt, lastActiveAt", "?,?,?,?,?,0,'',?,'',UTC_TIMESTAMP(),UTC_TIMESTAMP()"), // TODO: Implement user_count on users_groups here
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usernameExists: acc.SimpleSelect("users", "name", "name = ?", "", ""),
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userCount: acc.SimpleCount("users", "", ""),
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}, acc.FirstError()
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}
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func (mus *DefaultUserStore) DirtyGet(id int) *User {
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user, err := mus.cache.Get(id)
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if err == nil {
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return user
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}
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/*if mus.OutOfBounds(id) {
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return BlankUser()
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}*/
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user = &User{ID: id, Loggedin: true}
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err = mus.get.QueryRow(id).Scan(&user.Name, &user.Group, &user.Active, &user.IsSuperAdmin, &user.Session, &user.Email, &user.RawAvatar, &user.Message, &user.URLPrefix, &user.URLName, &user.Level, &user.Score, &user.Liked, &user.LastIP, &user.TempGroup)
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user.Init()
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if err == nil {
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mus.cache.Set(user)
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return user
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}
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return BlankUser()
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}
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// TODO: Log weird cache errors? Not just here but in every *Cache?
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func (mus *DefaultUserStore) Get(id int) (*User, error) {
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user, err := mus.cache.Get(id)
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if err == nil {
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return user, nil
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}
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user = &User{ID: id, Loggedin: true}
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err = mus.get.QueryRow(id).Scan(&user.Name, &user.Group, &user.Active, &user.IsSuperAdmin, &user.Session, &user.Email, &user.RawAvatar, &user.Message, &user.URLPrefix, &user.URLName, &user.Level, &user.Score, &user.Liked, &user.LastIP, &user.TempGroup)
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user.Init()
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if err == nil {
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mus.cache.Set(user)
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}
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return user, err
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}
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// TODO: Optimise this, so we don't wind up hitting the database every-time for small gaps
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// TODO: Make this a little more consistent with DefaultGroupStore's GetRange method
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func (store *DefaultUserStore) GetOffset(offset int, perPage int) (users []*User, err error) {
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rows, err := store.getOffset.Query(offset, perPage)
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if err != nil {
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return users, err
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}
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defer rows.Close()
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for rows.Next() {
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user := &User{Loggedin: true}
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err := rows.Scan(&user.ID, &user.Name, &user.Group, &user.Active, &user.IsSuperAdmin, &user.Session, &user.Email, &user.RawAvatar, &user.Message, &user.URLPrefix, &user.URLName, &user.Level, &user.Score, &user.Liked, &user.LastIP, &user.TempGroup)
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if err != nil {
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return nil, err
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}
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user.Init()
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store.cache.Set(user)
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users = append(users, user)
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}
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return users, rows.Err()
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}
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// TODO: Optimise the query to avoid preparing it on the spot? Maybe, use knowledge of the most common IN() parameter counts?
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// TODO: ID of 0 should always error?
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func (mus *DefaultUserStore) BulkGetMap(ids []int) (list map[int]*User, err error) {
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var idCount = len(ids)
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list = make(map[int]*User)
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if idCount == 0 {
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return list, nil
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}
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var stillHere []int
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sliceList := mus.cache.BulkGet(ids)
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if len(sliceList) > 0 {
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for i, sliceItem := range sliceList {
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if sliceItem != nil {
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list[sliceItem.ID] = sliceItem
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} else {
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stillHere = append(stillHere, ids[i])
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}
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}
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ids = stillHere
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}
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// If every user is in the cache, then return immediately
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if len(ids) == 0 {
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return list, nil
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} else if len(ids) == 1 {
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topic, err := mus.Get(ids[0])
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if err != nil {
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return list, err
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}
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list[topic.ID] = topic
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return list, nil
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}
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// TODO: Add a function for the qlist stuff
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var qlist string
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var uidList []interface{}
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for _, id := range ids {
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uidList = append(uidList, strconv.Itoa(id))
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qlist += "?,"
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}
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qlist = qlist[0 : len(qlist)-1]
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rows, err := qgen.NewAcc().Select("users").Columns("uid, name, group, active, is_super_admin, session, email, avatar, message, url_prefix, url_name, level, score, liked, last_ip, temp_group").Where("uid IN(" + qlist + ")").Query(uidList...)
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if err != nil {
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return list, err
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}
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for rows.Next() {
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user := &User{Loggedin: true}
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err := rows.Scan(&user.ID, &user.Name, &user.Group, &user.Active, &user.IsSuperAdmin, &user.Session, &user.Email, &user.RawAvatar, &user.Message, &user.URLPrefix, &user.URLName, &user.Level, &user.Score, &user.Liked, &user.LastIP, &user.TempGroup)
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if err != nil {
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return list, err
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}
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user.Init()
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mus.cache.Set(user)
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list[user.ID] = user
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}
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// Did we miss any users?
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if idCount > len(list) {
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var sidList string
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for _, id := range ids {
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_, ok := list[id]
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if !ok {
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sidList += strconv.Itoa(id) + ","
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}
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}
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// We probably don't need this, but it might be useful in case of bugs in BulkCascadeGetMap
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if sidList == "" {
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// TODO: Bulk log this
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if Dev.DebugMode {
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log.Print("This data is sampled later in the BulkCascadeGetMap function, so it might miss the cached IDs")
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log.Print("idCount", idCount)
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log.Print("ids", ids)
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log.Print("list", list)
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}
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return list, errors.New("We weren't able to find a user, but we don't know which one")
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}
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sidList = sidList[0 : len(sidList)-1]
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err = errors.New("Unable to find the users with the following IDs: " + sidList)
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}
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return list, err
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}
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func (mus *DefaultUserStore) BypassGet(id int) (*User, error) {
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user := &User{ID: id, Loggedin: true}
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err := mus.get.QueryRow(id).Scan(&user.Name, &user.Group, &user.Active, &user.IsSuperAdmin, &user.Session, &user.Email, &user.RawAvatar, &user.Message, &user.URLPrefix, &user.URLName, &user.Level, &user.Score, &user.Liked, &user.LastIP, &user.TempGroup)
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user.Init()
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return user, err
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}
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func (mus *DefaultUserStore) Reload(id int) error {
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user := &User{ID: id, Loggedin: true}
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err := mus.get.QueryRow(id).Scan(&user.Name, &user.Group, &user.Active, &user.IsSuperAdmin, &user.Session, &user.Email, &user.RawAvatar, &user.Message, &user.URLPrefix, &user.URLName, &user.Level, &user.Score, &user.Liked, &user.LastIP, &user.TempGroup)
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if err != nil {
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mus.cache.Remove(id)
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return err
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}
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user.Init()
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_ = mus.cache.Set(user)
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return nil
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}
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func (mus *DefaultUserStore) Exists(id int) bool {
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err := mus.exists.QueryRow(id).Scan(&id)
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if err != nil && err != ErrNoRows {
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LogError(err)
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}
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return err != ErrNoRows
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}
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// TODO: Change active to a bool?
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// TODO: Use unique keys for the usernames
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func (mus *DefaultUserStore) Create(username string, password string, email string, group int, active bool) (int, error) {
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// TODO: Strip spaces?
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// ? This number might be a little screwy with Unicode, but it's the only consistent thing we have, as Unicode characters can be any number of bytes in theory?
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if len(username) > Config.MaxUsernameLength {
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return 0, ErrLongUsername
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}
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// Is this username already taken..?
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err := mus.usernameExists.QueryRow(username).Scan(&username)
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if err != ErrNoRows {
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return 0, ErrAccountExists
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}
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salt, err := GenerateSafeString(SaltLength)
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if err != nil {
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return 0, err
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}
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hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password+salt), bcrypt.DefaultCost)
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if err != nil {
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return 0, err
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}
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res, err := mus.register.Exec(username, email, string(hashedPassword), salt, group, active)
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if err != nil {
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return 0, err
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}
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lastID, err := res.LastInsertId()
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return int(lastID), err
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}
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// GlobalCount returns the total number of users registered on the forums
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func (mus *DefaultUserStore) GlobalCount() (ucount int) {
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err := mus.userCount.QueryRow().Scan(&ucount)
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if err != nil {
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LogError(err)
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}
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return ucount
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}
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func (mus *DefaultUserStore) SetCache(cache UserCache) {
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mus.cache = cache
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}
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// TODO: We're temporarily doing this so that you can do ucache != nil in getTopicUser. Refactor it.
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func (mus *DefaultUserStore) GetCache() UserCache {
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_, ok := mus.cache.(*NullUserCache)
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if ok {
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return nil
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}
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return mus.cache
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}
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