Fix #96

This solves the error 500 on the /api/me endpoint.

Replace token search query `=` with `LIKE` to fix sqlite complaining about
no valid tokens. Also checked with MySQL and it still works after the change.

database.go

@@ -388,7 +388,7 @@ func (db *datastore) GetUserNameFromToken(accessToken string) (string, error) {
 
 	var oneTime bool
 	var username string
-	err := db.QueryRow("SELECT username, one_time FROM accesstokens LEFT JOIN users ON user_id = id WHERE token = ? AND (expires IS NULL OR expires > NOW())", t).Scan(&username, &oneTime)
+	err := db.QueryRow("SELECT username, one_time FROM accesstokens LEFT JOIN users ON user_id = id WHERE token LIKE ? AND (expires IS NULL OR expires > "+db.now()+")", t).Scan(&username, &oneTime)
 	switch {
 	case err == sql.ErrNoRows:
 		return "", ErrBadAccessToken
@@ -413,7 +413,7 @@ func (db *datastore) GetUserDataFromToken(accessToken string) (int64, string, er
 	var userID int64
 	var oneTime bool
 	var username string
-	err := db.QueryRow("SELECT user_id, username, one_time FROM accesstokens LEFT JOIN users ON user_id = id WHERE token = ? AND (expires IS NULL OR expires > NOW())", t).Scan(&userID, &username, &oneTime)
+	err := db.QueryRow("SELECT user_id, username, one_time FROM accesstokens LEFT JOIN users ON user_id = id WHERE token LIKE ? AND (expires IS NULL OR expires > "+db.now()+")", t).Scan(&userID, &username, &oneTime)
 	switch {
 	case err == sql.ErrNoRows:
 		return 0, "", ErrBadAccessToken
@@ -452,7 +452,7 @@ func (db *datastore) GetUserIDPrivilege(accessToken string) (userID int64, sudo
 	}
 
 	var oneTime bool
-	err := db.QueryRow("SELECT user_id, sudo, one_time FROM accesstokens WHERE token = ? AND (expires IS NULL OR expires > NOW())", t).Scan(&userID, &sudo, &oneTime)
+	err := db.QueryRow("SELECT user_id, sudo, one_time FROM accesstokens WHERE token LIKE ? AND (expires IS NULL OR expires > "+db.now()+")", t).Scan(&userID, &sudo, &oneTime)
 	switch {
 	case err == sql.ErrNoRows:
 		return -1, false
@@ -469,7 +469,7 @@ func (db *datastore) GetUserIDPrivilege(accessToken string) (userID int64, sudo
 }
 
 func (db *datastore) DeleteToken(accessToken []byte) error {
-	res, err := db.Exec("DELETE FROM accesstokens WHERE token = ?", accessToken)
+	res, err := db.Exec("DELETE FROM accesstokens WHERE token LIKE ?", accessToken)
 	if err != nil {
 		return err
 	}
@@ -484,7 +484,7 @@ func (db *datastore) DeleteToken(accessToken []byte) error {
 // userID.
 func (db *datastore) FetchLastAccessToken(userID int64) string {
 	var t []byte
-	err := db.QueryRow("SELECT token FROM accesstokens WHERE user_id = ? AND (expires IS NULL OR expires > NOW()) ORDER BY created DESC LIMIT 1", userID).Scan(&t)
+	err := db.QueryRow("SELECT token FROM accesstokens WHERE user_id = ? AND (expires IS NULL OR expires > "+db.now()+") ORDER BY created DESC LIMIT 1", userID).Scan(&t)
 	switch {
 	case err == sql.ErrNoRows:
 		return ""
@@ -529,7 +529,7 @@ func (db *datastore) GetTemporaryOneTimeAccessToken(userID int64, validSecs int,
 
 	expirationVal := "NULL"
 	if validSecs > 0 {
-		expirationVal = fmt.Sprintf("DATE_ADD(NOW(), INTERVAL %d SECOND)", validSecs)
+		expirationVal = fmt.Sprintf("DATE_ADD("+db.now()+", INTERVAL %d SECOND)", validSecs)
 	}
 
 	_, err = db.Exec("INSERT INTO accesstokens (token, user_id, one_time, expires) VALUES (?, ?, ?, "+expirationVal+")", string(binTok), userID, oneTime)