124 lines
2.3 KiB
Go
124 lines
2.3 KiB
Go
package permissions
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import (
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"database/sql"
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)
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// Database sql wrapper for operations with browser objects.
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type Database struct {
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db *sql.DB
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}
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// Close closes database.
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func (db Database) Close() error {
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return db.db.Close()
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}
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func NewDB(db *sql.DB) *Database {
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return &Database{db: db}
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}
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type DappPermissions struct {
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Name string `json:"dapp"`
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Permissions []string `json:"permissions,omitempty"`
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}
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func (db *Database) AddPermissions(perms DappPermissions) (err error) {
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var (
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tx *sql.Tx
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insert *sql.Stmt
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)
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tx, err = db.db.Begin()
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if err != nil {
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return
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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_ = tx.Rollback()
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}()
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insert, err = tx.Prepare("INSERT OR REPLACE INTO dapps(name) VALUES(?)")
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if err != nil {
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return
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}
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_, err = insert.Exec(perms.Name)
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insert.Close()
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if err != nil {
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return
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}
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if len(perms.Permissions) == 0 {
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return
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}
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insert, err = tx.Prepare("INSERT INTO permissions(dapp_name, permission) VALUES(?, ?)")
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if err != nil {
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return
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}
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defer insert.Close()
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for _, perm := range perms.Permissions {
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_, err = insert.Exec(perms.Name, perm)
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if err != nil {
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return
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}
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}
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return
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}
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func (db *Database) GetPermissions() (rst []DappPermissions, err error) {
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var (
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tx *sql.Tx
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rows *sql.Rows
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)
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tx, err = db.db.Begin()
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if err != nil {
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return
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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_ = tx.Rollback()
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}()
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// FULL and RIGHT joins are not supported
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rows, err = tx.Query("SELECT name FROM dapps")
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if err != nil {
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return
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}
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dapps := map[string]*DappPermissions{}
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for rows.Next() {
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perms := DappPermissions{}
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err = rows.Scan(&perms.Name)
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if err != nil {
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return nil, err
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}
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dapps[perms.Name] = &perms
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}
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rows, err = tx.Query("SELECT dapp_name, permission from permissions")
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if err != nil {
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return
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}
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var (
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name string
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permission string
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)
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for rows.Next() {
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err = rows.Scan(&name, &permission)
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if err != nil {
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return
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}
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dapps[name].Permissions = append(dapps[name].Permissions, permission)
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}
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rst = make([]DappPermissions, 0, len(dapps))
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for key := range dapps {
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rst = append(rst, *dapps[key])
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}
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return rst, nil
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}
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func (db *Database) DeletePermission(name string) error {
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_, err := db.db.Exec("DELETE FROM dapps WHERE name = ?", name)
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return err
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}
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