// DisableUsers deactivates users' accounts.
// Administrator permissions should be checked before this call.
func DisableUsers(ctx context.Context, names []string) ([]UserResult, error) {
s, err := db.CtxSession(ctx)
if err != nil {
return nil, err
}
coll, err := db.Coll(s, "users")
if err != nil {
return nil, err
}
now := time.Now().UTC()
result := make([]UserResult, len(names))
for i, name := range names {
err = coll.Update(bson.M{"_id": name, "off": false}, bson.M{"$set": bson.M{"off": true, "mt": now}})
if err != nil {
errMsg := "internal error"
if err == mgo.ErrNotFound {
errMsg = "not found"
}
result[i] = UserResult{Name: name, Err: errMsg}
continue
}
result[i] = UserResult{Name: name, Err: ""}
}
return result, nil
}
// Shorten returns new short links.
func Shorten(ctx context.Context, params []*ReqParams) ([]*CustomURL, error) {
c, err := conf.FromContext(ctx)
if err != nil {
return nil, err
}
u, err := auth.ExtractUser(ctx)
if err != nil {
return nil, err
}
// check URLs pack size
n := len(params)
if n > c.Settings.MaxPack {
return nil, fmt.Errorf("too big ReqParams pack size [%v]", n)
}
s, err := db.CtxSession(ctx)
if err != nil {
return nil, err
}
// prepare
coll, err := db.Coll(s, "urls")
if err != nil {
return nil, err
}
now := time.Now().UTC()
err = db.LockURL(s)
if err != nil {
return nil, err
}
defer db.UnlockURL(s)
num, err := getMax(coll)
if err != nil {
return nil, err
}
documents := make([]interface{}, n)
cus := make([]*CustomURL, n)
for i, param := range params {
num++
cus[i] = &CustomURL{
ID: num,
Group: param.Group,
Tag: param.Tag,
Original: param.Original,
User: u.Name,
TTL: param.TTL,
NotDirect: param.NotDirect,
Created: now,
Modified: now,
Cb: param.Cb,
API: param.IsAPI,
}
documents[i] = cus[i]
}
err = coll.Insert(documents...)
if err != nil {
return nil, err
}
return cus, nil
}
// Export exports URLs data.
func Export(ctx context.Context, filter Filter) ([]*CustomURL, [3]int, error) {
var result []*CustomURL
pages := [3]int{1, 1, filter.PageSize}
s, err := db.CtxSession(ctx)
if err != nil {
return nil, pages, err
}
coll, err := db.Coll(s, "urls")
if err != nil {
return nil, pages, err
}
conditions := bson.M{"group": filter.Group, "tag": filter.Tag}
if filter.Active {
conditions["off"] = false
}
switch {
case filter.Period[0] != nil && filter.Period[1] != nil:
conditions["$and"] = []bson.M{
bson.M{"ts": bson.M{"$gte": *filter.Period[0]}},
bson.M{"ts": bson.M{"$lte": *filter.Period[1]}},
}
case filter.Period[0] != nil:
conditions["ts"] = bson.M{"$gte": *filter.Period[0]}
case filter.Period[1] != nil:
conditions["ts"] = bson.M{"$lte": *filter.Period[1]}
}
// TODO: add skip+limit
n, err := coll.Find(conditions).Count()
if err != nil {
return nil, pages, err
}
if n == 0 {
return result, pages, nil
}
pages[0] = filter.Page
pages[1] = n / pages[2]
if n%pages[2] != 0 {
pages[1]++
}
switch {
case pages[0] < 1:
pages[0] = 1
case pages[0] > pages[1]:
pages[0] = pages[1]
}
err = coll.Find(conditions).Skip((pages[0] - 1) * pages[2]).Limit(pages[2]).Sort("-id").All(&result)
if err != nil {
return nil, pages, err
}
return result, pages, nil
}
// ChangeUsers updates user's tokens.
// Administrator permissions should be checked before this call.
func ChangeUsers(ctx context.Context, names []string) ([]UserResult, error) {
c, err := conf.FromContext(ctx)
if err != nil {
return nil, err
}
user, err := ExtractUser(ctx)
if err != nil {
return nil, err
}
s, err := db.CtxSession(ctx)
if err != nil {
return nil, err
}
coll, err := db.Coll(s, "users")
if err != nil {
return nil, err
}
now := time.Now().UTC()
isAdmin := user.HasRole("admin")
result := make([]UserResult, len(names))
for i, name := range names {
if !isAdmin && user.Name != name {
result[i] = UserResult{Name: name, U: nil, Err: "permissions error"}
continue
}
token, hash, err := genToken(c)
if err != nil {
result[i] = UserResult{Name: name, U: nil, Err: "internal error"}
continue
}
err = coll.UpdateId(name, bson.M{"$set": bson.M{"token": hash, "mt": now}})
if err != nil {
errMsg := "internal error"
if err == mgo.ErrNotFound {
errMsg = "not found"
}
result[i] = UserResult{Name: name, U: nil, Err: errMsg}
continue
}
result[i] = UserResult{Name: name, U: nil, T: token + hash, Err: ""}
}
return result, nil
}
// CreateUsers creates new users.
func CreateUsers(ctx context.Context, names []string) ([]UserResult, error) {
c, err := conf.FromContext(ctx)
if err != nil {
return nil, err
}
s, err := db.CtxSession(ctx)
if err != nil {
return nil, err
}
coll, err := db.Coll(s, "users")
if err != nil {
return nil, err
}
now := time.Now().UTC()
result := make([]UserResult, len(names))
for i, name := range names {
token, hash, err := genToken(c)
if err != nil {
result[i] = UserResult{Name: name, U: nil, Err: "internal error"}
continue
}
user := &User{
Name: name,
Token: hash,
Roles: []string{"user"},
Modified: now,
Created: now,
}
if err := coll.Insert(user); err != nil {
if mgo.IsDup(err) {
result[i] = UserResult{Name: name, U: nil, Err: "duplicate item"}
} else {
result[i] = UserResult{Name: name, U: nil, Err: "internal error"}
}
continue
}
result[i] = UserResult{Name: name, U: user, T: token + hash, Err: ""}
}
return result, nil
}
// MultiLengthen returns short URLs info for slice of links.
func MultiLengthen(ctx context.Context, links []string) ([]ChangeResult, error) {
var result []ChangeResult
c, err := conf.FromContext(ctx)
if err != nil {
return nil, err
}
n := len(links)
if n > c.Settings.MaxPack {
return nil, fmt.Errorf("too big pack size [%v]", n)
}
s, err := db.CtxSession(ctx)
if err != nil {
return nil, err
}
coll, err := db.Coll(s, "urls")
if err != nil {
return nil, err
}
for _, link := range links {
id, err := Decode(link)
if err != nil {
c.L.Error.Printf("decode error [%v]: %v", link, err)
result = append(result, ChangeResult{Cu: &CustomURL{ID: id}, Err: "invalid value"})
continue
}
cu := &CustomURL{}
err = coll.FindId(id).One(cu)
if err != nil {
msg := "internal error"
if err == mgo.ErrNotFound {
msg = "not found"
}
result = append(result, ChangeResult{Cu: &CustomURL{ID: id}, Err: msg})
continue
}
result = append(result, ChangeResult{Cu: cu})
}
return result, nil
}
// Import imports short URLs.
func Import(ctx context.Context, links map[string]*ReqParams) ([]ChangeResult, error) {
var result []ChangeResult
c, err := conf.FromContext(ctx)
if err != nil {
return nil, err
}
u, err := auth.ExtractUser(ctx)
if err != nil {
return nil, err
}
n := len(links)
if n > c.Settings.MaxPack {
return nil, fmt.Errorf("too big pack size [%v]", n)
}
s, err := db.CtxSession(ctx)
if err != nil {
return nil, err
}
// prepare
coll, err := db.Coll(s, "urls")
if err != nil {
return nil, err
}
now := time.Now().UTC()
for short, param := range links {
num, err := Decode(short)
if err != nil {
result = append(result, ChangeResult{Err: "invalid short URL value"})
continue
}
cu := &CustomURL{
ID: num,
Group: param.Group,
Tag: param.Tag,
Original: param.Original,
User: u.Name,
TTL: param.TTL,
NotDirect: param.NotDirect,
Created: now,
Modified: now,
Cb: param.Cb,
API: param.IsAPI,
}
// a locking of every insert is not fast
// but the pack doesn't lock other operations.
err = db.LockURL(s)
if err != nil {
return nil, err
}
errIns := coll.Insert(cu)
err = db.UnlockURL(s)
if err != nil {
return nil, err
}
if errIns != nil {
msg := "internal error"
if mgo.IsDup(errIns) {
msg = "duplicate item"
}
result = append(result, ChangeResult{Err: msg})
continue
}
result = append(result, ChangeResult{Cu: cu})
}
return result, nil
}