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schema.go
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schema.go
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/*
Nging is a toolbox for webmasters
Copyright (C) 2018-present Wenhui Shen <swh@admpub.com>
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 <https://www.gnu.org/licenses/>.
*/
package mysql
import (
"database/sql"
"encoding/hex"
"strings"
"github.com/nging-plugins/dbmanager/application/library/dbmanager/driver/mysql/formdata"
"github.com/webx-top/com"
"github.com/webx-top/echo"
)
type KV struct {
Value string
Text string
}
type ProcessList struct {
Id sql.NullInt64
User sql.NullString
Host sql.NullString
Db sql.NullString
Command sql.NullString
Time sql.NullInt64
State sql.NullString
Info sql.NullString
Progress sql.NullFloat64
}
type TableStatus struct {
Name sql.NullString
Engine sql.NullString
Version sql.NullString
Row_format sql.NullString
Rows sql.NullInt64
Avg_row_length sql.NullInt64
Data_length sql.NullInt64
Max_data_length sql.NullInt64
Index_length sql.NullInt64
Data_free sql.NullInt64
Auto_increment sql.NullInt64
Create_time sql.NullString
Update_time sql.NullString
Check_time sql.NullString
Collation sql.NullString
Checksum sql.NullString
Create_options sql.NullString
Comment sql.NullString
Max_index_length sql.NullInt64
Temporary sql.NullString // Y
}
func (t *TableStatus) IsView() bool {
return !t.Engine.Valid
}
func (t *TableStatus) FKSupport(currentVersion string) bool {
switch t.Engine.String {
case `InnoDB`, `IBMDB2I`, `NDB`:
if com.VersionCompare(currentVersion, `5.6`) >= 0 {
return true
}
}
return false
}
func (t *TableStatus) Size() int64 {
return t.Data_length.Int64 + t.Index_length.Int64
}
type Collation struct {
Collation sql.NullString
Charset sql.NullString `json:"-"`
Id sql.NullInt64 `json:"-"`
Default sql.NullString `json:"-"`
Compiled sql.NullString `json:"-"`
Sortlen sql.NullInt64 `json:"-"`
PadAttribute sql.NullString `json:"-"`
}
type Collations struct {
Collations map[string][]Collation
Defaults map[string]int
}
func NewCollations() *Collations {
return &Collations{
Collations: make(map[string][]Collation),
Defaults: make(map[string]int),
}
}
type Privilege struct {
Privilege sql.NullString
Context sql.NullString
Comment sql.NullString
}
func NewPrivileges() *Privileges {
return &Privileges{
Privileges: []*Privilege{},
privileges: map[string]map[string]string{
"_Global_": {
"All privileges": "",
},
},
}
}
type Privileges struct {
Privileges []*Privilege
privileges map[string]map[string]string
}
func (p *Privileges) Parse() {
for _, priv := range p.Privileges {
if priv.Privilege.String == `Grant option` {
p.privileges["_Global_"][priv.Privilege.String] = priv.Comment.String
continue
}
for _, context := range strings.Split(priv.Context.String, `,`) {
context = strings.Replace(context, ` `, `_`, -1)
if _, ok := p.privileges[context]; !ok {
p.privileges[context] = map[string]string{}
}
p.privileges[context][priv.Privilege.String] = priv.Comment.String
}
}
//com.Dump(p.privileges)
if _, ok := p.privileges["Server_Admin"]; !ok {
p.privileges["Server_Admin"] = map[string]string{}
}
if vs, ok := p.privileges["File_access_on_server"]; ok {
for k, v := range vs {
p.privileges["Server_Admin"][k] = v
}
}
if _, ok := p.privileges["Server_Admin"]["Usage"]; ok {
delete(p.privileges["Server_Admin"], "Usage")
}
if _, ok := p.privileges["Databases"]; !ok {
p.privileges["Databases"] = map[string]string{}
}
if vs, ok := p.privileges["Procedures"]; ok {
if v, ok := vs["Create routine"]; ok {
p.privileges["Databases"]["Create routine"] = v
delete(p.privileges["Procedures"], "Create routine")
}
}
if _, ok := p.privileges["Tables"]; ok {
p.privileges["Columns"] = map[string]string{}
for _, val := range []string{`Select`, `Insert`, `Update`, `References`} {
if v, y := p.privileges["Tables"][val]; y {
p.privileges["Columns"][val] = v
}
}
for k := range p.privileges["Tables"] {
if _, ok := p.privileges["Databases"][k]; !ok {
delete(p.privileges["Databases"], k)
}
}
}
}
type Operation struct {
Revoke []string
Grant []string
Columns string
On string
User string
Scope string //all|database|table|column|proxy
}
type Grant struct {
Scope string //all|database|table|column|proxy
Value string //*.*|db.*|db.table|db.table(col1,col2)
Database string
Table string
Columns string //col1,col2
Settings map[string]string //["CREATE"]="1|0"
*Operation
}
func (op *Operation) Apply(m *mySQL) error {
//解除权限
if len(op.Revoke) > 0 {
on := `ON ` + op.On + ` FROM ` + op.User
hasAll := op.HasAllPrivileges(&op.Revoke, true)
hasOpt := op.HasGrantOption(&op.Revoke, true)
if hasAll {
if op.Scope == `proxy` {
r := &Result{}
r.SQL = `REVOKE PROXY ` + on
r.Exec(m.newParam())
m.AddResults(r)
return r.err
}
r := &Result{}
r.SQL = `REVOKE ALL PRIVILEGES ` + on
r.Exec(m.newParam())
m.AddResults(r)
if r.err != nil {
return r.err
}
if hasOpt {
r := &Result{}
r.SQL = `REVOKE GRANT OPTION ` + on
r.Exec(m.newParam())
m.AddResults(r)
return r.err
}
} else if hasOpt {
if op.Scope == `proxy` {
r := &Result{}
r.SQL = `REVOKE PROXY ` + on
r.Exec(m.newParam())
m.AddResults(r)
return r.err
}
r := &Result{}
r.SQL = `REVOKE GRANT OPTION ` + on
r.Exec(m.newParam())
m.AddResults(r)
if r.err != nil {
return r.err
}
}
if len(op.Revoke) > 0 {
r := &Result{}
c := strings.Join(op.Revoke, op.Columns+`, `) + op.Columns
r.SQL = `REVOKE ` + reGrantOptionValue.ReplaceAllString(c, `$1`) + ` ` + on
r.Exec(m.newParam())
m.AddResults(r)
if r.err != nil {
return r.err
}
}
}
//增加授权
if len(op.Grant) > 0 {
on := `ON ` + op.On + ` TO ` + op.User
if op.Scope == `proxy` {
r := &Result{}
r.SQL = `GRANT PROXY ` + on
if op.HasGrantOption(&op.Grant, false) {
r.SQL += ` WITH GRANT OPTION`
}
r.Exec(m.newParam())
m.AddResults(r)
return r.err
}
hasAll := op.HasAllPrivileges(&op.Grant, true)
hasOpt := op.HasGrantOption(&op.Grant, true)
if hasAll && hasOpt {
r := &Result{}
r.SQL = `GRANT ALL PRIVILEGES ` + on + ` WITH GRANT OPTION`
r.Exec(m.newParam())
m.AddResults(r)
return r.err
}
if hasAll {
r := &Result{}
r.SQL = `GRANT ALL PRIVILEGES ` + on
r.Exec(m.newParam())
m.AddResults(r)
return r.err
}
if hasOpt {
r := &Result{}
r.SQL = `GRANT GRANT OPTION ` + on
r.Exec(m.newParam())
m.AddResults(r)
if r.err != nil {
return r.err
}
}
if len(op.Grant) > 0 {
r := &Result{}
c := strings.Join(op.Grant, op.Columns+`, `) + op.Columns
r.SQL = `GRANT ` + reGrantOptionValue.ReplaceAllString(c, `$1`) + ` ` + on
r.Exec(m.newParam())
m.AddResults(r)
if r.err != nil {
return r.err
}
}
}
return nil
}
func (op *Operation) HasAllPrivileges(values *[]string, deleteIt bool) bool {
for index, name := range *values {
if name == `ALL PRIVILEGES` {
if deleteIt {
if index+1 < len(*values) {
*values = append((*values)[0:index], (*values)[index+1:]...)
} else {
*values = (*values)[0:index]
}
}
return true
}
}
return false
}
func (op *Operation) HasGrantOption(values *[]string, deleteIt bool) bool {
for index, name := range *values {
if name == `GRANT OPTION` {
if deleteIt {
if index+1 < len(*values) {
*values = append((*values)[0:index], (*values)[index+1:]...)
} else {
*values = (*values)[0:index]
}
}
return true
}
}
return false
}
func (g *Grant) IsValid(group string, values map[string]*echo.Mapx) bool {
if group == `_Global_` {
return true
}
switch g.Scope {
case `all`:
return group == `Server_Admin` || group == `Procedures` || group == `Databases` || group == `Tables` || group == `Columns`
case `database`:
return group == `Databases` || group == `Procedures`
case `table`:
return group == `Tables`
case `column`:
return group == `Columns`
case `proxy`:
return false
default:
return false
}
}
func (g *Grant) String() string {
switch g.Scope {
case `proxy`:
r := strings.SplitN(g.Value, `@`, 2)
if len(r) != 2 {
return ``
}
r[0] = strings.Trim(r[0], `'`)
r[1] = strings.Trim(r[1], `'`)
return quoteVal(r[0]) + `@` + quoteVal(r[1])
case `all`:
return `*.*`
case `database`:
g.Database = reNotWord.ReplaceAllString(g.Database, ``)
if len(g.Database) == 0 {
return ``
}
return "`" + g.Database + "`.*"
case `table`:
g.Database = reNotWord.ReplaceAllString(g.Database, ``)
if len(g.Database) == 0 {
return ``
}
g.Table = reNotWord.ReplaceAllString(g.Table, ``)
if len(g.Table) == 0 {
return ``
}
return "`" + g.Database + "`.`" + g.Table + "`"
case `column`:
g.Database = reNotWord.ReplaceAllString(g.Database, ``)
if len(g.Database) == 0 {
return ``
}
g.Table = reNotWord.ReplaceAllString(g.Table, ``)
if len(g.Table) == 0 {
return ``
}
columns := strings.Split(g.Columns, `,`)
g.Columns = ``
var sep string
for _, column := range columns {
column = reNotWord.ReplaceAllString(column, ``)
if len(column) == 0 {
continue
}
g.Columns += sep + column
sep = `,`
}
if len(g.Columns) > 0 {
return "`" + g.Database + "`.`" + g.Table + "` (" + g.Columns + ")"
}
return "`" + g.Database + "`.`" + g.Table + "`"
}
return ``
}
type SupportedEngine struct {
Engine sql.NullString //CSV|InnoDB|MyISAM|MEMORY...
Support sql.NullString //YES|DEFAULT
Comment sql.NullString
Transactions sql.NullString //NO|YES
XA sql.NullString //NO|YES
Savepoints sql.NullString //NO|YES
}
type FieldInfo struct {
Field sql.NullString
Type sql.NullString
Collation sql.NullString
Null sql.NullString
Key sql.NullString
Default sql.NullString
Extra sql.NullString
Privileges sql.NullString
Comment sql.NullString
}
type IndexInfo struct {
Table sql.NullString
Non_unique sql.NullString
Key_name sql.NullString
Seq_in_index sql.NullString
Column_name sql.NullString
Collation sql.NullString // A 表示升序 / D 表示降序(MySQL8+) / null 表示无分类
Cardinality sql.NullString
Sub_part sql.NullString
Packed sql.NullString
Null sql.NullString
Index_type sql.NullString
Comment sql.NullString
Index_comment sql.NullString
Visible sql.NullString
Expression sql.NullString
}
type Indexes struct {
Name string
Type string
Columns []string
Lengths []string
Descs []string
Expressions []string
With string
}
type Field struct {
Field string
Full_type string
Type string
Options []string
Length string
LengthN int
Precision int
Unsigned string
Default sql.NullString
Null bool
AutoIncrement sql.NullString
On_update string
On_delete string
Collation string
Privileges map[string]int
Comment string
Primary bool
Original string
}
func (f *Field) CopyFromRequest(d *formdata.Field) {
f.Field = d.Field
f.Type = d.Type
f.Length = d.Length
f.Unsigned = d.Unsigned
f.Collation = d.Collation
f.On_delete = d.On_delete
f.On_update = d.On_update
f.Null = d.Null
f.Comment = d.Comment
f.Default = sql.NullString{
String: d.Default,
Valid: d.Has_default,
}
f.AutoIncrement = d.AutoIncrement
}
func (f *Field) MaxSize() int {
return f.LengthN
}
func (f *Field) IsRequired() bool {
return !(f.Null || f.Default.Valid || f.AutoIncrement.Valid)
}
func (f *Field) Format(value string) string {
if len(value) == 0 {
return value
}
switch f.Type {
case `timestamp`, `datetime`:
t := com.RestoreTime(value)
if t.IsZero() {
return `0000-00-00 00:00:00`
}
return t.Format(`2006-01-02 15:04:05`)
case `date`:
t := com.RestoreTime(value)
if t.IsZero() {
return `0000-00-00`
}
return t.Format(`2006-01-02`)
case `time`:
t := com.RestoreTime(value)
if t.IsZero() {
return `00:00:00`
}
return t.Format(`15:04:05`)
case `year`:
t := com.RestoreTime(value)
if t.IsZero() {
return `0000`
}
return t.Format(`2006`)
default:
if strings.Contains(f.Type, "binary") {
return hex.EncodeToString([]byte(value))
}
return value
}
}
func (f *Field) InputType() string {
switch f.Type {
case `timestamp`:
return `datetime`
case `datetime`:
return f.Type
case `date`:
return f.Type
case `time`:
return f.Type
case `year`:
return f.Type
default:
if f.MaxSize() > 255 {
return `textarea`
}
return `text`
}
}
type Enum struct {
Int int
String string
}
type Trigger struct {
Trigger sql.NullString
Event sql.NullString
Table sql.NullString
Statement sql.NullString
Timing sql.NullString
Created sql.NullString
Sql_mode sql.NullString
Definer sql.NullString
Character_set_client sql.NullString
Collation_connection sql.NullString
Database_collation sql.NullString
Of string
Type string
}
type TriggerOption struct {
Type string
Options []string
}
type TriggerOptions []*TriggerOption
func (t TriggerOptions) Get(typeName string) []string {
for _, v := range t {
if v.Type == typeName {
return v.Options
}
}
return []string{}
}
func NewDataTable() *DataTable {
return &DataTable{
Columns: []string{},
Values: []map[string]*sql.NullString{},
}
}
type DataTable struct {
Columns []string
Values []map[string]*sql.NullString
}
type SelectData struct {
Result *Result
Data *DataTable
Explain *DataTable
}
type CharsetData struct {
Charset sql.NullString
Description sql.NullString
DefaultCollation sql.NullString
Maxlen sql.NullInt64
}