103 lines
2.9 KiB
Go
103 lines
2.9 KiB
Go
package checker
|
|
|
|
import (
|
|
"time"
|
|
|
|
sdk "git.happydns.org/checker-sdk-go/checker"
|
|
)
|
|
|
|
// Version is the checker version reported in CheckerDefinition.Version.
|
|
var Version = "built-in"
|
|
|
|
// Definition returns the CheckerDefinition for the alias checker.
|
|
func Definition() *sdk.CheckerDefinition {
|
|
def := &sdk.CheckerDefinition{
|
|
ID: "alias",
|
|
Name: "CNAME / DNAME / ALIAS chain",
|
|
Version: Version,
|
|
Availability: sdk.CheckerAvailability{
|
|
ApplyToService: true,
|
|
ApplyToDomain: true,
|
|
ApplyToZone: true,
|
|
LimitToServices: []string{
|
|
"svcs.CNAME",
|
|
"svcs.SpecialCNAME",
|
|
},
|
|
},
|
|
ObservationKeys: []sdk.ObservationKey{ObservationKeyAlias},
|
|
Options: sdk.CheckerOptionsDocumentation{
|
|
UserOpts: []sdk.CheckerOptionDocumentation{
|
|
{
|
|
Id: "maxChainLength",
|
|
Type: "uint",
|
|
Label: "Maximum chain length",
|
|
Description: "Above this number of hops the chain is reported as critical. Most resolvers give up around 8-16.",
|
|
Default: float64(8),
|
|
},
|
|
{
|
|
Id: "minTargetTTL",
|
|
Type: "uint",
|
|
Label: "Minimum TTL (seconds)",
|
|
Description: "Hops with a TTL below this threshold are flagged as a warning. Very short TTLs degrade cache performance.",
|
|
Default: float64(60),
|
|
},
|
|
{
|
|
Id: "requireResolvableTarget",
|
|
Type: "bool",
|
|
Label: "Require resolvable target",
|
|
Description: "When enabled, a chain whose final target returns no A/AAAA is reported as critical (otherwise a warning).",
|
|
Default: true,
|
|
},
|
|
{
|
|
Id: "allowApexCNAME",
|
|
Type: "bool",
|
|
Label: "Allow CNAME at apex",
|
|
Description: "When enabled, a CNAME at a zone apex is only reported as warning. RFC 1912 forbids this, so leaving it off is strongly recommended.",
|
|
Default: false,
|
|
},
|
|
{
|
|
Id: "recognizeApexFlattening",
|
|
Type: "bool",
|
|
Label: "Recognize ALIAS/ANAME flattening",
|
|
Description: "When enabled, providers that serve A/AAAA at the apex (ALIAS/ANAME pseudo-records) are reported as informational instead of a coexistence violation.",
|
|
Default: true,
|
|
},
|
|
},
|
|
DomainOpts: []sdk.CheckerOptionDocumentation{
|
|
{
|
|
Id: "domain_name",
|
|
Label: "Parent domain name",
|
|
AutoFill: sdk.AutoFillDomainName,
|
|
},
|
|
{
|
|
Id: "subdomain",
|
|
Label: "Subdomain",
|
|
AutoFill: sdk.AutoFillSubdomain,
|
|
},
|
|
},
|
|
ServiceOpts: []sdk.CheckerOptionDocumentation{
|
|
{
|
|
Id: "service_type",
|
|
Label: "Service type",
|
|
AutoFill: sdk.AutoFillServiceType,
|
|
},
|
|
{
|
|
Id: "service",
|
|
Label: "Service",
|
|
AutoFill: sdk.AutoFillService,
|
|
},
|
|
},
|
|
},
|
|
Rules: []sdk.CheckRule{
|
|
Rule(),
|
|
},
|
|
HasHTMLReport: true,
|
|
Interval: &sdk.CheckIntervalSpec{
|
|
Min: 5 * time.Minute,
|
|
Max: 24 * time.Hour,
|
|
Default: 1 * time.Hour,
|
|
},
|
|
}
|
|
def.BuildRulesInfo()
|
|
return def
|
|
}
|