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fix to correctly parse denoms with slashes in the base denom #1451

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merged 13 commits into from
Jun 14, 2022
Merged

fix to correctly parse denoms with slashes in the base denom #1451

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6579211
fix to correctly parse denoms with slashes in the base denom
May 27, 2022
10c25cc
some logic refinement
May 28, 2022
b713dd8
review comments
Jun 2, 2022
856d97a
Merge branch 'main' into carlos/1446-bugtransfer-cannot-send-namespac…
Jun 2, 2022
7f352ef
Merge branch 'main' into carlos/1446-bugtransfer-cannot-send-namespac…
Jun 3, 2022
5c8dedc
add changelog entry an other review comments
crodriguezvega Jun 7, 2022
9bff589
review comment
Jun 8, 2022
3a85227
Merge branch 'main' into carlos/1446-bugtransfer-cannot-send-namespac…
Jun 9, 2022
7a79f95
Merge branch 'main' into carlos/1446-bugtransfer-cannot-send-namespac…
Jun 9, 2022
58d1133
Merge branch 'main' into carlos/1446-bugtransfer-cannot-send-namespac…
Jun 12, 2022
64657c5
Add slash migration guide (#1518)
AdityaSripal Jun 14, 2022
c5552e4
Merge branch 'main' into carlos/1446-bugtransfer-cannot-send-namespac…
Jun 14, 2022
4a2a8cd
rename migration file
Jun 14, 2022
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38 changes: 33 additions & 5 deletions modules/apps/transfer/types/trace.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,10 @@ import (
//
// Examples:
//
// - "portidone/channelidone/uatom" => DenomTrace{Path: "portidone/channelidone", BaseDenom: "uatom"}
// - "transfer/channelidone/uatom" => DenomTrace{Path: "transfer/channelidone", BaseDenom: "uatom"}
// - "transfer/channelidone/transfer/channelidtwo/uatom" => DenomTrace{Path: "transfer/channelidone/transfer/channelidtwo", BaseDenom: "uatom"}
// - "transfer/channelidone/gamm/pool/1" => DenomTrace{Path: "transfer/channelidone", BaseDenom: "gamm/pool/1"}
// - "gamm/pool/1" => DenomTrace{Path: "", BaseDenom: "gamm/pool/1"}
// - "uatom" => DenomTrace{Path: "", BaseDenom: "uatom"}
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func ParseDenomTrace(rawDenom string) DenomTrace {
denomSplit := strings.Split(rawDenom, "/")
Expand All @@ -32,9 +35,10 @@ func ParseDenomTrace(rawDenom string) DenomTrace {
}
}

path, baseDenom := extractPathAndBaseDenomFromDenomTrace(denomSplit)
return DenomTrace{
Path: strings.Join(denomSplit[:len(denomSplit)-1], "/"),
BaseDenom: denomSplit[len(denomSplit)-1],
Path: path,
BaseDenom: baseDenom,
}
}

Expand Down Expand Up @@ -70,6 +74,22 @@ func (dt DenomTrace) GetFullDenomPath() string {
return dt.GetPrefix() + dt.BaseDenom
}

func extractPathAndBaseDenomFromDenomTrace(denomTraceItems []string) (string, string) {
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path := []string{}
baseDenom := []string{}
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length := len(denomTraceItems)
for i := 0; i < length; i = i + 2 {
if i < length-1 && length > 2 && denomTraceItems[i] == PortID {
path = append(path, denomTraceItems[i], denomTraceItems[i+1])
} else {
baseDenom = denomTraceItems[i:]
break
}
}

return strings.Join(path, "/"), strings.Join(baseDenom, "/")
}

func validateTraceIdentifiers(identifiers []string) error {
if len(identifiers) == 0 || len(identifiers)%2 != 0 {
return fmt.Errorf("trace info must come in pairs of port and channel identifiers '{portID}/{channelID}', got the identifiers: %s", identifiers)
Expand Down Expand Up @@ -143,8 +163,10 @@ func (t Traces) Sort() Traces {
// ValidatePrefixedDenom checks that the denomination for an IBC fungible token packet denom is correctly prefixed.
// The function will return no error if the given string follows one of the two formats:
//
// - Prefixed denomination: '{portIDN}/{channelIDN}/.../{portID0}/{channelID0}/baseDenom'
// - Prefixed denomination: 'transfer/{channelIDN}/.../transfer/{channelID0}/baseDenom'
// - Unprefixed denomination: 'baseDenom'
//
// 'baseDenom' may or may not contain '/'s
func ValidatePrefixedDenom(denom string) error {
denomSplit := strings.Split(denom, "/")
if denomSplit[0] == denom && strings.TrimSpace(denom) != "" {
Expand All @@ -156,7 +178,13 @@ func ValidatePrefixedDenom(denom string) error {
return sdkerrors.Wrap(ErrInvalidDenomForTransfer, "base denomination cannot be blank")
}

identifiers := denomSplit[:len(denomSplit)-1]
path, _ := extractPathAndBaseDenomFromDenomTrace(denomSplit)
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if path == "" {
// NOTE: base denom contains slashes, so no base denomination validation
return nil
}

identifiers := strings.Split(path, "/")
return validateTraceIdentifiers(identifiers)
}

Expand Down
29 changes: 24 additions & 5 deletions modules/apps/transfer/types/trace_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,10 +14,23 @@ func TestParseDenomTrace(t *testing.T) {
}{
{"empty denom", "", DenomTrace{}},
{"base denom", "uatom", DenomTrace{BaseDenom: "uatom"}},
{"base denom ending with '/'", "uatom/", DenomTrace{BaseDenom: "uatom/"}},
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{"base denom with single '/'s", "gamm/pool/1", DenomTrace{BaseDenom: "gamm/pool/1"}},
{"base denom with double '/'s", "gamm//pool//1", DenomTrace{BaseDenom: "gamm//pool//1"}},
{"trace info", "transfer/channelToA/uatom", DenomTrace{BaseDenom: "uatom", Path: "transfer/channelToA"}},
{"incomplete path", "transfer/uatom", DenomTrace{BaseDenom: "uatom", Path: "transfer"}},
{"trace info with base denom ending in '/'", "transfer/channelToA/uatom/", DenomTrace{BaseDenom: "uatom/", Path: "transfer/channelToA"}},
{"trace info with single '/' in base denom", "transfer/channelToA/erc20/0x85bcBCd7e79Ec36f4fBBDc54F90C643d921151AA", DenomTrace{BaseDenom: "erc20/0x85bcBCd7e79Ec36f4fBBDc54F90C643d921151AA", Path: "transfer/channelToA"}},
{"trace info with multiple '/'s in base denom", "transfer/channelToA/gamm/pool/1", DenomTrace{BaseDenom: "gamm/pool/1", Path: "transfer/channelToA"}},
{"trace info with multiple double '/'s in base denom", "transfer/channelToA/gamm//pool//1", DenomTrace{BaseDenom: "gamm//pool//1", Path: "transfer/channelToA"}},
{"trace info with multiple port/channel pairs", "transfer/channelToA/transfer/channelToB/uatom", DenomTrace{BaseDenom: "uatom", Path: "transfer/channelToA/transfer/channelToB"}},
{"incomplete path", "transfer/uatom", DenomTrace{BaseDenom: "transfer/uatom"}},
{"invalid path (1)", "transfer//uatom", DenomTrace{BaseDenom: "uatom", Path: "transfer/"}},
{"invalid path (2)", "transfer/channelToA/uatom/", DenomTrace{BaseDenom: "", Path: "transfer/channelToA/uatom"}},
{"invalid path (2)", "channelToA/transfer/uatom", DenomTrace{BaseDenom: "channelToA/transfer/uatom"}},
{"invalid path (3)", "uatom/transfer", DenomTrace{BaseDenom: "uatom/transfer"}},
{"invalid path (4)", "transfer/channelToA", DenomTrace{BaseDenom: "transfer/channelToA"}},
{"invalid path (5)", "transfer/channelToA/", DenomTrace{Path: "transfer/channelToA"}},
{"invalid path (6)", "transfer/channelToA/transfer", DenomTrace{BaseDenom: "transfer", Path: "transfer/channelToA"}},
{"invalid path (7)", "transfer/channelToA/transfer/channelToB", DenomTrace{Path: "transfer/channelToA/transfer/channelToB"}},
}

for _, tc := range testCases {
Expand Down Expand Up @@ -49,6 +62,8 @@ func TestDenomTrace_Validate(t *testing.T) {
expError bool
}{
{"base denom only", DenomTrace{BaseDenom: "uatom"}, false},
{"base denom only with single '/'", DenomTrace{BaseDenom: "erc20/0x85bcBCd7e79Ec36f4fBBDc54F90C643d921151AA"}, false},
{"base denom only with multiple '/'s", DenomTrace{BaseDenom: "gamm/pool/1"}, false},
{"empty DenomTrace", DenomTrace{}, true},
{"valid single trace info", DenomTrace{BaseDenom: "uatom", Path: "transfer/channelToA"}, false},
{"valid multiple trace info", DenomTrace{BaseDenom: "uatom", Path: "transfer/channelToA/transfer/channelToB"}, false},
Expand Down Expand Up @@ -104,12 +119,15 @@ func TestValidatePrefixedDenom(t *testing.T) {
expError bool
}{
{"prefixed denom", "transfer/channelToA/uatom", false},
{"prefixed denom with '/'", "transfer/channelToA/gamm/pool/1", false},
{"empty prefix", "/uatom", false},
{"empty identifiers", "//uatom", false},
{"base denom", "uatom", false},
{"base denom with single '/'", "erc20/0x85bcBCd7e79Ec36f4fBBDc54F90C643d921151AA", false},
{"base denom with multiple '/'s", "gamm/pool/1", false},
{"invalid port ID", "(transfer)/channelToA/uatom", false},
{"empty denom", "", true},
{"empty prefix", "/uatom", true},
{"empty identifiers", "//uatom", true},
{"single trace identifier", "transfer/", true},
{"invalid port ID", "(transfer)/channelToA/uatom", true},
{"invalid channel ID", "transfer/(channelToA)/uatom", true},
}

Expand All @@ -131,6 +149,7 @@ func TestValidateIBCDenom(t *testing.T) {
}{
{"denom with trace hash", "ibc/7F1D3FCF4AE79E1554D670D1AD949A9BA4E4A3C76C63093E17E446A46061A7A2", false},
{"base denom", "uatom", false},
{"base denom ending with '/'", "uatom/", false},
{"base denom with single '/'s", "gamm/pool/1", false},
{"base denom with double '/'s", "gamm//pool//1", false},
{"non-ibc prefix with hash", "notibc/7F1D3FCF4AE79E1554D670D1AD949A9BA4E4A3C76C63093E17E446A46061A7A2", false},
Expand Down