| // Copyright 2018 syzkaller project authors. All rights reserved. |
| // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. |
| |
| package prog |
| |
| import ( |
| "math/rand" |
| "testing" |
| ) |
| |
| func TestNotEscaping(t *testing.T) { |
| r := newRand(nil, rand.NewSource(0)) |
| s := &state{ |
| files: map[string]bool{"./file0": true}, |
| } |
| bound := 1000000 |
| if testing.Short() { |
| bound = 1000 |
| } |
| for i := 0; i < bound; i++ { |
| fn := r.filenameImpl(s) |
| if escapingFilename(fn) { |
| t.Errorf("sandbox escaping file name %q", fn) |
| } |
| } |
| } |
| |
| func TestDeterminism(t *testing.T) { |
| target, rs, iters := initTest(t) |
| iters /= 10 // takes too long |
| for i := 0; i < iters; i++ { |
| seed := rs.Int63() |
| rs1 := rand.NewSource(seed) |
| p1 := generateProg(t, target, rs1) |
| rs2 := rand.NewSource(seed) |
| p2 := generateProg(t, target, rs2) |
| ps1 := string(p1.Serialize()) |
| ps2 := string(p2.Serialize()) |
| r1 := rs1.Int63() |
| r2 := rs2.Int63() |
| if r1 != r2 || ps1 != ps2 { |
| t.Errorf("seed=%v\nprog 1 (%v):\n%v\nprog 2 (%v):\n%v", seed, r1, ps1, r2, ps2) |
| } |
| } |
| } |
| |
| func generateProg(t *testing.T, target *Target, rs rand.Source) *Prog { |
| p := target.Generate(rs, 5, nil) |
| p.Mutate(rs, 10, nil, nil) |
| for i, c := range p.Calls { |
| comps := make(CompMap) |
| for v := range extractValues(c) { |
| comps.AddComp(v, v+1) |
| comps.AddComp(v, v+10) |
| } |
| p.MutateWithHints(i, comps, func(p1 *Prog) { |
| p = p1.Clone() |
| }) |
| } |
| for _, crash := range []bool{false, true} { |
| p, _ = Minimize(p, -1, crash, func(*Prog, int) bool { |
| return rs.Int63()%10 == 0 |
| }) |
| } |
| data := p.Serialize() |
| var err error |
| p, err = target.Deserialize(data, NonStrict) |
| if err != nil { |
| t.Fatal(err) |
| } |
| return p |
| } |
| |
| // Checks that a generated program contains only enabled syscalls. |
| func TestEnabledCalls(t *testing.T) { |
| target, rs, iters := initTest(t) |
| enabledCalls := map[string]bool{"open": true, "read": true, "dup3": true, "write": true, "close": true} |
| enabled := make(map[*Syscall]bool) |
| for c := range enabledCalls { |
| enabled[target.SyscallMap[c]] = true |
| } |
| ct := target.BuildChoiceTable(nil, enabled) |
| for i := 0; i < 100; i++ { |
| p := target.Generate(rs, 50, ct) |
| for it := 0; it < iters/10; it++ { |
| p.Mutate(rs, 50, ct, nil) |
| } |
| for _, c := range p.Calls { |
| if _, ok := enabledCalls[c.Meta.Name]; !ok { |
| t.Fatalf("program contains a syscall that is not enabled: %v\n", c.Meta.Name) |
| } |
| } |
| } |
| } |
| |
| func TestSizeGenerateConstArg(t *testing.T) { |
| target, rs, iters := initRandomTargetTest(t, "test", "64") |
| r := newRand(target, rs) |
| for _, c := range target.Syscalls { |
| ForeachType(c, func(typ Type) { |
| if _, ok := typ.(*IntType); !ok { |
| return |
| } |
| bits := typ.TypeBitSize() |
| limit := uint64(1<<bits - 1) |
| for i := 0; i < iters; i++ { |
| newArg, _ := typ.generate(r, nil) |
| newVal := newArg.(*ConstArg).Val |
| if newVal > limit { |
| t.Fatalf("invalid generated value: %d. (arg bitsize: %d; max value: %d)", newVal, bits, limit) |
| } |
| } |
| }) |
| } |
| } |