chore: (x/authz) add helpers `AppendBytes`, `ParseByteSlice` (#11713)
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@ -6,6 +6,7 @@ import (
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"fmt"
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"time"
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"github.com/cosmos/cosmos-sdk/types/kv"
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dbm "github.com/tendermint/tm-db"
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)
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@ -106,3 +107,30 @@ func CopyBytes(bz []byte) (ret []byte) {
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copy(ret, bz)
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return ret
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}
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// AppendLengthPrefixedBytes combines the slices of bytes to one slice of bytes.
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func AppendLengthPrefixedBytes(args ...[]byte) []byte {
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length := 0
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for _, v := range args {
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length += len(v)
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}
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res := make([]byte, length)
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length = 0
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for _, v := range args {
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copy(res[length:length+len(v)], v)
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length += len(v)
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}
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return res
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}
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// ParseLengthPrefixedBytes panics when store key length is not equal to the given length.
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func ParseLengthPrefixedBytes(key []byte, startIndex int, sliceLength int) ([]byte, int) {
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neededLength := startIndex + sliceLength
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endIndex := neededLength - 1
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kv.AssertKeyAtLeastLength(key, neededLength)
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byteSlice := key[startIndex:neededLength]
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return byteSlice, endIndex
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}
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@ -8,6 +8,7 @@ import (
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"github.com/stretchr/testify/suite"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/types/address"
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)
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type utilsTestSuite struct {
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@ -109,3 +110,23 @@ func (s *utilsTestSuite) TestParseTimeBytes() {
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_, err = sdk.ParseTimeBytes([]byte{})
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s.Require().Error(err)
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}
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func (s *utilsTestSuite) TestAppendParseBytes() {
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test1 := "test1"
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test2 := "testString2"
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testByte1 := []byte(test1)
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testByte2 := []byte(test2)
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combinedBytes := sdk.AppendLengthPrefixedBytes(address.MustLengthPrefix(testByte1), address.MustLengthPrefix(testByte2))
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testCombineBytes := append([]byte{}, address.MustLengthPrefix(testByte1)...)
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testCombineBytes = append(testCombineBytes, address.MustLengthPrefix(testByte2)...)
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s.Require().Equal(combinedBytes, testCombineBytes)
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test1Len, test1LenEndIndex := sdk.ParseLengthPrefixedBytes(combinedBytes, 0, 1)
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parseTest1, parseTest1EndIndex := sdk.ParseLengthPrefixedBytes(combinedBytes, test1LenEndIndex+1, int(test1Len[0]))
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s.Require().Equal(testByte1, parseTest1)
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test2Len, test2LenEndIndex := sdk.ParseLengthPrefixedBytes(combinedBytes, parseTest1EndIndex+1, 1)
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parseTest2, _ := sdk.ParseLengthPrefixedBytes(combinedBytes, test2LenEndIndex+1, int(test2Len[0]))
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s.Require().Equal(testByte2, parseTest2)
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}
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@ -34,14 +34,8 @@ func grantStoreKey(grantee sdk.AccAddress, granter sdk.AccAddress, msgType strin
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m := conv.UnsafeStrToBytes(msgType)
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granter = address.MustLengthPrefix(granter)
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grantee = address.MustLengthPrefix(grantee)
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key := sdk.AppendLengthPrefixedBytes(GrantKey, granter, grantee, m)
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l := 1 + len(grantee) + len(granter) + len(m)
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var key = make([]byte, l)
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copy(key, GrantKey)
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copy(key[1:], granter)
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copy(key[1+len(granter):], grantee)
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copy(key[l-len(m):], m)
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// fmt.Println(">>>> len", l, key)
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return key
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}
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@ -49,15 +43,15 @@ func grantStoreKey(grantee sdk.AccAddress, granter sdk.AccAddress, msgType strin
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func parseGrantStoreKey(key []byte) (granterAddr, granteeAddr sdk.AccAddress, msgType string) {
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// key is of format:
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// 0x01<granterAddressLen (1 Byte)><granterAddress_Bytes><granteeAddressLen (1 Byte)><granteeAddress_Bytes><msgType_Bytes>
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kv.AssertKeyAtLeastLength(key, 2)
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granterAddrLen := key[1] // remove prefix key
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kv.AssertKeyAtLeastLength(key, int(3+granterAddrLen))
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granterAddr = sdk.AccAddress(key[2 : 2+granterAddrLen])
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granteeAddrLen := int(key[2+granterAddrLen])
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kv.AssertKeyAtLeastLength(key, 4+int(granterAddrLen+byte(granteeAddrLen)))
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granteeAddr = sdk.AccAddress(key[3+granterAddrLen : 3+granterAddrLen+byte(granteeAddrLen)])
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return granterAddr, granteeAddr, conv.UnsafeBytesToStr(key[3+granterAddrLen+byte(granteeAddrLen):])
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granterAddrLen, granterAddrLenEndIndex := sdk.ParseLengthPrefixedBytes(key, 1, 1) // ignore key[0] since it is a prefix key
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granterAddr, granterAddrEndIndex := sdk.ParseLengthPrefixedBytes(key, granterAddrLenEndIndex+1, int(granterAddrLen[0]))
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granteeAddrLen, granteeAddrLenEndIndex := sdk.ParseLengthPrefixedBytes(key, granterAddrEndIndex+1, 1)
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granteeAddr, granteeAddrEndIndex := sdk.ParseLengthPrefixedBytes(key, granteeAddrLenEndIndex+1, int(granteeAddrLen[0]))
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kv.AssertKeyAtLeastLength(key, granteeAddrEndIndex+1)
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return granterAddr, granteeAddr, conv.UnsafeBytesToStr(key[(granteeAddrEndIndex + 1):])
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}
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// parseGrantQueueKey split expiration time, granter and grantee from the grant queue key
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@ -65,20 +59,18 @@ func parseGrantQueueKey(key []byte) (time.Time, sdk.AccAddress, sdk.AccAddress,
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// key is of format:
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// 0x02<grant_expiration_Bytes><granterAddress_Bytes><granteeAddressLen (1 Byte)><granteeAddress_Bytes>
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kv.AssertKeyAtLeastLength(key, 1+lenTime)
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exp, err := sdk.ParseTimeBytes(key[1 : 1+lenTime])
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expBytes, expEndIndex := sdk.ParseLengthPrefixedBytes(key, 1, lenTime)
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exp, err := sdk.ParseTimeBytes(expBytes)
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if err != nil {
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return exp, nil, nil, err
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}
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granterAddrLen := key[1+lenTime]
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kv.AssertKeyAtLeastLength(key, 1+lenTime+int(granterAddrLen))
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granter := sdk.AccAddress(key[2+lenTime : byte(2+lenTime)+granterAddrLen])
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granterAddrLen, granterAddrLenEndIndex := sdk.ParseLengthPrefixedBytes(key, expEndIndex+1, 1)
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granter, granterEndIndex := sdk.ParseLengthPrefixedBytes(key, granterAddrLenEndIndex+1, int(granterAddrLen[0]))
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granteeAddrLen := key[byte(2+lenTime)+granterAddrLen]
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granteeStart := byte(3+lenTime) + granterAddrLen
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kv.AssertKeyAtLeastLength(key, int(granteeStart))
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grantee := sdk.AccAddress(key[granteeStart : granteeStart+granteeAddrLen])
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granteeAddrLen, granteeAddrLenEndIndex := sdk.ParseLengthPrefixedBytes(key, granterEndIndex+1, 1)
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grantee, _ := sdk.ParseLengthPrefixedBytes(key, granteeAddrLenEndIndex+1, int(granteeAddrLen[0]))
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return exp, granter, grantee, nil
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}
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@ -92,13 +84,7 @@ func GrantQueueKey(expiration time.Time, granter sdk.AccAddress, grantee sdk.Acc
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granter = address.MustLengthPrefix(granter)
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grantee = address.MustLengthPrefix(grantee)
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l := 1 + len(exp) + len(granter) + len(grantee)
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var key = make([]byte, l)
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copy(key, GrantQueuePrefix)
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copy(key[1:], exp)
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copy(key[1+len(exp):], granter)
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copy(key[1+len(exp)+len(granter):], grantee)
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return key
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return sdk.AppendLengthPrefixedBytes(GrantQueuePrefix, exp, granter, grantee)
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}
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// GrantQueueTimePrefix - return grant queue time prefix
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