Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Automated cherry pick of #101084: Updating EndpointSlice validation to match Endpoints #101440

Merged
merged 1 commit into from Apr 26, 2021
Merged

Automated cherry pick of #101084: Updating EndpointSlice validation to match Endpoints #101440

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
18 changes: 11 additions & 7 deletions pkg/apis/core/validation/validation.go
View file
Open in desktop
Expand Up @@ -4014,7 +4014,7 @@ func ValidateService(service *core.Service, allowAppProtocol bool) field.ErrorLi
allErrs = append(allErrs, field.Invalid(idxPath, ip, msgs[i]))
}
} else {
allErrs = append(allErrs, validateNonSpecialIP(ip, idxPath)...)
allErrs = append(allErrs, ValidateNonSpecialIP(ip, idxPath)...)
}
}

Expand Down Expand Up @@ -5572,15 +5572,19 @@ func validateEndpointAddress(address *core.EndpointAddress, fldPath *field.Path)
allErrs = append(allErrs, field.Invalid(fldPath.Child("nodeName"), *address.NodeName, msg))
}
}
allErrs = append(allErrs, validateNonSpecialIP(address.IP, fldPath.Child("ip"))...)
allErrs = append(allErrs, ValidateNonSpecialIP(address.IP, fldPath.Child("ip"))...)
return allErrs
}

func validateNonSpecialIP(ipAddress string, fldPath *field.Path) field.ErrorList {
// We disallow some IPs as endpoints or external-ips. Specifically,
// unspecified and loopback addresses are nonsensical and link-local
// addresses tend to be used for node-centric purposes (e.g. metadata
// service).
// ValidateNonSpecialIP is used to validate Endpoints, EndpointSlices, and
// external IPs. Specifically, this disallows unspecified and loopback addresses
// are nonsensical and link-local addresses tend to be used for node-centric
// purposes (e.g. metadata service).
//
// IPv6 references
// - https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml
// - https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml
func ValidateNonSpecialIP(ipAddress string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
ip := net.ParseIP(ipAddress)
if ip == nil {
Expand Down
2 changes: 2 additions & 0 deletions pkg/apis/discovery/validation/validation.go
View file
Open in desktop
Expand Up @@ -103,8 +103,10 @@ func validateEndpoints(endpoints []discovery.Endpoint, addrType discovery.Addres
}
case discovery.AddressTypeIPv4:
allErrs = append(allErrs, validation.IsValidIPv4Address(addressPath.Index(i), address)...)
allErrs = append(allErrs, apivalidation.ValidateNonSpecialIP(address, addressPath.Index(i))...)
case discovery.AddressTypeIPv6:
allErrs = append(allErrs, validation.IsValidIPv6Address(addressPath.Index(i), address)...)
allErrs = append(allErrs, apivalidation.ValidateNonSpecialIP(address, addressPath.Index(i))...)
case discovery.AddressTypeFQDN:
allErrs = append(allErrs, validation.IsFullyQualifiedDomainName(addressPath.Index(i), address)...)
}
Expand Down
34 changes: 32 additions & 2 deletions pkg/apis/discovery/validation/validation_test.go
View file
Open in desktop
Expand Up @@ -390,7 +390,7 @@ func TestValidateEndpointSlice(t *testing.T) {
},
},
"bad-ipv4": {
expectedErrors: 2,
expectedErrors: 3,
endpointSlice: &discovery.EndpointSlice{
ObjectMeta: standardMeta,
AddressType: discovery.AddressTypeIPv4,
Expand All @@ -405,7 +405,7 @@ func TestValidateEndpointSlice(t *testing.T) {
},
},
"bad-ipv6": {
expectedErrors: 2,
expectedErrors: 4,
endpointSlice: &discovery.EndpointSlice{
ObjectMeta: standardMeta,
AddressType: discovery.AddressTypeIPv6,
Expand Down Expand Up @@ -454,6 +454,36 @@ func TestValidateEndpointSlice(t *testing.T) {
expectedErrors: 3,
endpointSlice: &discovery.EndpointSlice{},
},
"special-ipv4": {
expectedErrors: 1,
endpointSlice: &discovery.EndpointSlice{
ObjectMeta: standardMeta,
AddressType: discovery.AddressTypeIPv4,
Ports: []discovery.EndpointPort{{
Name: utilpointer.StringPtr("http"),
Protocol: protocolPtr(api.ProtocolTCP),
}},
Endpoints: []discovery.Endpoint{{
Addresses: []string{"127.0.0.1"},
Hostname: utilpointer.StringPtr("valid-123"),
}},
},
},
"special-ipv6": {
expectedErrors: 1,
endpointSlice: &discovery.EndpointSlice{
ObjectMeta: standardMeta,
AddressType: discovery.AddressTypeIPv6,
Ports: []discovery.EndpointPort{{
Name: utilpointer.StringPtr("http"),
Protocol: protocolPtr(api.ProtocolTCP),
}},
Endpoints: []discovery.Endpoint{{
Addresses: []string{"fe80::9656:d028:8652:66b6"},
Hostname: utilpointer.StringPtr("valid-123"),
}},
},
},
}

for name, testCase := range testCases {
Expand Down