mirror of
https://github.com/go-gitea/gitea
synced 2024-11-18 07:52:03 +01:00
61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
// Copyright (c) 2016 Marty Schoch
|
|
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the
|
|
// License. You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
// Unless required by applicable law or agreed to in writing,
|
|
// software distributed under the License is distributed on an "AS
|
|
// IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
|
|
// express or implied. See the License for the specific language
|
|
// governing permissions and limitations under the License.
|
|
|
|
package smat
|
|
|
|
// ActionSeq represents a sequence of actions, used for populating a corpus
|
|
// of byte sequences for the corresponding fuzz tests
|
|
type ActionSeq []ActionID
|
|
|
|
// ByteEncoding runs the FSM to produce a byte sequence to trigger the
|
|
// desired action
|
|
func (a ActionSeq) ByteEncoding(ctx Context, setup, teardown ActionID, actionMap ActionMap) ([]byte, error) {
|
|
setupFunc, teardownFunc, err := actionMap.findSetupTeardown(setup, teardown)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
state, err := setupFunc(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer func() {
|
|
_, _ = teardownFunc(ctx)
|
|
}()
|
|
|
|
var rv []byte
|
|
for _, actionID := range a {
|
|
b, err := probeStateForAction(state, actionID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
rv = append(rv, b)
|
|
action, ok := actionMap[actionID]
|
|
if !ok {
|
|
continue
|
|
}
|
|
state, err = action(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return rv, nil
|
|
}
|
|
|
|
func probeStateForAction(state State, actionID ActionID) (byte, error) {
|
|
for i := 0; i < 256; i++ {
|
|
nextActionID := state(byte(i))
|
|
if nextActionID == actionID {
|
|
return byte(i), nil
|
|
}
|
|
}
|
|
return 0, ErrActionNotPossible
|
|
}
|