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context: handle the case when we have more sigs than needed

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We can technically have more signatures in the file than we need and it's OK,
this case should be handled.
This commit is contained in:
Roman Khimov 2022-08-31 10:53:49 +03:00
parent 4b136e8ab1
commit 58707c2b1e
2 changed files with 38 additions and 19 deletions
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11
pkg/smartcontract/context/context.go
View file

@ -96,14 +96,19 @@ func (c *ParameterContext) AddSignature(h util.Uint160, ctr *wallet.Contract, pu
return errors.New("public key is not present in script")
}
item.AddSignature(pub, sig)
if len(item.Signatures) == len(ctr.Parameters) {
if len(item.Signatures) >= len(ctr.Parameters) {
indexMap := map[string]int{}
for i := range pubs {
indexMap[hex.EncodeToString(pubs[i])] = i
}
sigs := make([]sigWithIndex, 0, len(item.Signatures))
sigs := make([]sigWithIndex, len(item.Parameters))
var i int
for pub, sig := range item.Signatures {
sigs = append(sigs, sigWithIndex{index: indexMap[pub], sig: sig})
sigs[i] = sigWithIndex{index: indexMap[pub], sig: sig}
i++
if i == len(sigs) {
break
}
}
sort.Slice(sigs, func(i, j int) bool {
return sigs[i].index < sigs[j].index

46
pkg/smartcontract/context/context_test.go
View file

@ -96,24 +96,38 @@ func TestParameterContext_AddSignatureMultisig(t *testing.T) {
sig := priv.SignHashable(uint32(c.Network), tx)
require.Error(t, c.AddSignature(ctr.ScriptHash(), ctr, priv.PublicKey(), sig))
indices := []int{2, 3, 0} // random order
for _, i := range indices {
sig := privs[i].SignHashable(uint32(c.Network), tx)
require.NoError(t, c.AddSignature(ctr.ScriptHash(), ctr, pubs[i], sig))
require.Error(t, c.AddSignature(ctr.ScriptHash(), ctr, pubs[i], sig))
indices := []int{2, 3, 0, 1} // random order
testSigWit := func(t *testing.T, num int) {
for _, i := range indices[:num] {
sig := privs[i].SignHashable(uint32(c.Network), tx)
require.NoError(t, c.AddSignature(ctr.ScriptHash(), ctr, pubs[i], sig))
require.Error(t, c.AddSignature(ctr.ScriptHash(), ctr, pubs[i], sig))
item := c.Items[ctr.ScriptHash()]
require.NotNil(t, item)
require.Equal(t, sig, item.GetSignature(pubs[i]))
item := c.Items[ctr.ScriptHash()]
require.NotNil(t, item)
require.Equal(t, sig, item.GetSignature(pubs[i]))
}
t.Run("GetWitness", func(t *testing.T) {
w, err := c.GetWitness(ctr.ScriptHash())
require.NoError(t, err)
v := newTestVM(w, tx)
require.NoError(t, v.Run())
require.Equal(t, 1, v.Estack().Len())
require.Equal(t, true, v.Estack().Pop().Value())
})
}
t.Run("GetWitness", func(t *testing.T) {
w, err := c.GetWitness(ctr.ScriptHash())
require.NoError(t, err)
v := newTestVM(w, tx)
require.NoError(t, v.Run())
require.Equal(t, 1, v.Estack().Len())
require.Equal(t, true, v.Estack().Pop().Value())
t.Run("exact number of sigs", func(t *testing.T) {
testSigWit(t, 3)
})
t.Run("larger number of sigs", func(t *testing.T) {
// Clean up.
var itm = c.Items[ctr.ScriptHash()]
for i := range itm.Parameters {
itm.Parameters[i].Value = nil
}
itm.Signatures = make(map[string][]byte)
testSigWit(t, 4)
})
}