ADD: User Authentication Password Encoders
Allow user to choose how to encode passwords with connection string overrides of embedded `sqlite_crypt` function.
This commit is contained in:
Gert-Jan Timmer
parent
9b30110b83
commit
7337e65c27
58
sqlite3.go
58
sqlite3.go
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@ -894,6 +894,8 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
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authCreate := false
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authUser := ""
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authPass := ""
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authCrypt := ""
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authSalt := ""
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mutex := C.int(C.SQLITE_OPEN_FULLMUTEX)
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txlock := "BEGIN"
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@ -929,6 +931,12 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
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if val := params.Get("_auth_pass"); val != "" {
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authPass = val
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}
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if val := params.Get("_auth_crypt"); val != "" {
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authCrypt = val
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}
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if val := params.Get("_auth_salt"); val != "" {
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authSalt = val
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}
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// _loc
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if val := params.Get("_loc"); val != "" {
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@ -1287,6 +1295,56 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
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// Create connection to SQLite
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conn := &SQLiteConn{db: db, loc: loc, txlock: txlock}
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// Password Cipher has to be registerd before authentication
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if len(authCrypt) > 0 {
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switch strings.ToUpper(authCrypt) {
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case "SHA1":
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA1, true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSHA1: %s", err)
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}
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case "SSHA1":
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if len(authSalt) == 0 {
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return nil, fmt.Errorf("_auth_crypt=ssha1, requires _auth_salt")
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}
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA1(authSalt), true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSSHA1: %s", err)
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}
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case "SHA256":
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA256, true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSHA256: %s", err)
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}
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case "SSHA256":
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if len(authSalt) == 0 {
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return nil, fmt.Errorf("_auth_crypt=ssha256, requires _auth_salt")
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}
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA256(authSalt), true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSSHA256: %s", err)
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}
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case "SHA384":
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA384, true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSHA384: %s", err)
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}
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case "SSHA384":
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if len(authSalt) == 0 {
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return nil, fmt.Errorf("_auth_crypt=ssha384, requires _auth_salt")
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}
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA384(authSalt), true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSSHA384: %s", err)
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}
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case "SHA512":
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSHA512, true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSHA512: %s", err)
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}
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case "SSHA512":
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if len(authSalt) == 0 {
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return nil, fmt.Errorf("_auth_crypt=ssha512, requires _auth_salt")
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}
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if err := conn.RegisterFunc("sqlite_crypt", CryptEncoderSSHA512(authSalt), true); err != nil {
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return nil, fmt.Errorf("CryptEncoderSSHA512: %s", err)
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}
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}
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}
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// Preform Authentication
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if err := conn.Authenticate(authUser, authPass); err != nil {
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return nil, err
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@ -0,0 +1,120 @@
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// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
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//
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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package sqlite3
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import (
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"crypto/sha1"
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"crypto/sha256"
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"crypto/sha512"
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)
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// This file provides several different implementations for the
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// default embedded sqlite_crypt function.
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// This function is uses a ceasar-cypher by default
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// and is used within the UserAuthentication module to encode
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// the password.
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//
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// The provided functions can be used as an overload to the sqlite_crypt
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// function through the use of the RegisterFunc on the connection.
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//
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// Because the functions can serv a purpose to an end-user
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// without using the UserAuthentication module
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// the functions are default compiled in.
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//
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// From SQLITE3 - user-auth.txt
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// The sqlite_user.pw field is encoded by a built-in SQL function
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// "sqlite_crypt(X,Y)". The two arguments are both BLOBs. The first argument
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// is the plaintext password supplied to the sqlite3_user_authenticate()
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// interface. The second argument is the sqlite_user.pw value and is supplied
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// so that the function can extract the "salt" used by the password encoder.
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// The result of sqlite_crypt(X,Y) is another blob which is the value that
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// ends up being stored in sqlite_user.pw. To verify credentials X supplied
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// by the sqlite3_user_authenticate() routine, SQLite runs:
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//
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// sqlite_user.pw == sqlite_crypt(X, sqlite_user.pw)
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//
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// To compute an appropriate sqlite_user.pw value from a new or modified
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// password X, sqlite_crypt(X,NULL) is run. A new random salt is selected
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// when the second argument is NULL.
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//
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// The built-in version of of sqlite_crypt() uses a simple Ceasar-cypher
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// which prevents passwords from being revealed by searching the raw database
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// for ASCII text, but is otherwise trivally broken. For better password
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// security, the database should be encrypted using the SQLite Encryption
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// Extension or similar technology. Or, the application can use the
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// sqlite3_create_function() interface to provide an alternative
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// implementation of sqlite_crypt() that computes a stronger password hash,
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// perhaps using a cryptographic hash function like SHA1.
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// CryptEncoderSHA1 encodes a password with SHA1
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func CryptEncoderSHA1(pass []byte, hash interface{}) []byte {
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h := sha1.Sum(pass)
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return h[:]
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}
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// CryptEncoderSSHA1 encodes a password with SHA1 with the
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// configured salt.
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func CryptEncoderSSHA1(salt string) func(pass []byte, hash interface{}) []byte {
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return func(pass []byte, hash interface{}) []byte {
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s := []byte(salt)
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p := append(pass, s...)
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h := sha1.Sum(p)
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return h[:]
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}
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}
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// CryptEncoderSHA256 encodes a password with SHA256
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func CryptEncoderSHA256(pass []byte, hash interface{}) []byte {
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h := sha256.Sum256(pass)
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return h[:]
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}
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// CryptEncoderSSHA256 encodes a password with SHA256
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// with the configured salt
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func CryptEncoderSSHA256(salt string) func(pass []byte, hash interface{}) []byte {
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return func(pass []byte, hash interface{}) []byte {
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s := []byte(salt)
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p := append(pass, s...)
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h := sha256.Sum256(p)
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return h[:]
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}
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}
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// CryptEncoderSHA384 encodes a password with SHA256
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func CryptEncoderSHA384(pass []byte, hash interface{}) []byte {
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h := sha512.Sum384(pass)
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return h[:]
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}
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// CryptEncoderSSHA384 encodes a password with SHA256
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// with the configured salt
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func CryptEncoderSSHA384(salt string) func(pass []byte, hash interface{}) []byte {
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return func(pass []byte, hash interface{}) []byte {
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s := []byte(salt)
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p := append(pass, s...)
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h := sha512.Sum384(p)
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return h[:]
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}
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}
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// CryptEncoderSHA512 encodes a password with SHA256
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func CryptEncoderSHA512(pass []byte, hash interface{}) []byte {
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h := sha512.Sum512(pass)
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return h[:]
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}
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// CryptEncoderSSHA512 encodes a password with SHA256
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// with the configured salt
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func CryptEncoderSSHA512(salt string) func(pass []byte, hash interface{}) []byte {
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return func(pass []byte, hash interface{}) []byte {
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s := []byte(salt)
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p := append(pass, s...)
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h := sha512.Sum512(p)
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return h[:]
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}
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}
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// EOF
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@ -1108,3 +1108,247 @@ func TestUserAuthenticationDeleteUser(t *testing.T) {
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So(err, ShouldEqual, ErrAdminRequired)
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})
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}
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func TestUserAuthenticationEncoder(t *testing.T) {
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connectWithCrypt := func(t *testing.T, f string, username, password string, crypt string, salt string) (file string, db *sql.DB, c *SQLiteConn, err error) {
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conn = nil // Clear connection
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file = f // Copy provided file (f) => file
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if file == "" {
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// Create dummy file
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file = TempFilename(t)
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}
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db, err = sql.Open("sqlite3_with_conn", "file:"+file+fmt.Sprintf("?_auth&_auth_user=%s&_auth_pass=%s&_auth_crypt=%s&_auth_salt=%s", username, password, crypt, salt))
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if err != nil {
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defer os.Remove(file)
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return file, nil, nil, err
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}
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// Dummy query to force connection and database creation
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// Will return ErrUnauthorized (SQLITE_AUTH) if user authentication fails
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if _, err = db.Exec("SELECT 1;"); err != nil {
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defer os.Remove(file)
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defer db.Close()
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return file, nil, nil, err
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}
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c = conn
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return
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}
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Convey("SHA1 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "sha1", "")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "sha1", "")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SSHA1 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "ssha1", "salted")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "ssha1", "salted")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SHA256 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "sha256", "")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "sha256", "")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SSHA256 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "ssha256", "salted")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "ssha256", "salted")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SHA384 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "sha384", "")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "sha384", "")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SSHA384 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "ssha384", "salted")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "ssha384", "salted")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SHA512 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "sha512", "")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "sha512", "")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer db2.Close()
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})
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Convey("SSHA512 Encoder", t, func() {
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f1, db1, c1, err := connectWithCrypt(t, "", "admin", "admin", "ssha512", "salted")
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So(f1, ShouldNotBeBlank)
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So(db1, ShouldNotBeNil)
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So(c1, ShouldNotBeNil)
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So(err, ShouldBeNil)
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defer os.Remove(f1)
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e, err := userExists(db1, "admin")
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So(err, ShouldBeNil)
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So(e, ShouldEqual, 1)
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a, err := isAdmin(db1, "admin")
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So(err, ShouldBeNil)
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So(a, ShouldEqual, true)
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db1.Close()
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// Preform authentication
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f2, db2, c2, err := connectWithCrypt(t, f1, "admin", "admin", "ssha512", "salted")
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So(f2, ShouldNotBeBlank)
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So(f1, ShouldEqual, f2)
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So(db2, ShouldNotBeNil)
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So(c2, ShouldNotBeNil)
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So(err, ShouldBeNil)
|
||||
defer db2.Close()
|
||||
})
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue