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blocky/resolver/blocking_resolver_test.go
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package resolver
import (
"context"
"time"
"github.com/0xERR0R/blocky/config"
. "github.com/0xERR0R/blocky/evt"
. "github.com/0xERR0R/blocky/helpertest"
"github.com/0xERR0R/blocky/lists"
"github.com/0xERR0R/blocky/log"
. "github.com/0xERR0R/blocky/model"
"github.com/0xERR0R/blocky/util"
"github.com/miekg/dns"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
"github.com/stretchr/testify/mock"
)
var (
group1File, group2File, defaultGroupFile *TmpFile
tmpDir *TmpFolder
)
var _ = BeforeSuite(func() {
tmpDir = NewTmpFolder("BlockingResolver")
group1File = tmpDir.CreateStringFile("group1File", "DOMAIN1.com")
group2File = tmpDir.CreateStringFile("group2File", "blocked2.com")
defaultGroupFile = tmpDir.CreateStringFile("defaultGroupFile",
"blocked3.com",
"123.145.123.145",
"2001:db8:85a3:08d3::370:7344",
"badcnamedomain.com")
})
var _ = Describe("BlockingResolver", Label("blockingResolver"), func() {
var (
sut *BlockingResolver
sutConfig config.Blocking
m *mockResolver
mockAnswer *dns.Msg
ctx context.Context
cancelFn context.CancelFunc
)
Describe("Type", func() {
It("follows conventions", func() {
expectValidResolverType(sut)
})
})
BeforeEach(func() {
ctx, cancelFn = context.WithCancel(context.Background())
DeferCleanup(cancelFn)
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
}
mockAnswer = new(dns.Msg)
})
JustBeforeEach(func() {
var err error
m = &mockResolver{}
m.On("Resolve", mock.Anything).Return(&Response{Res: mockAnswer}, nil)
sut, err = NewBlockingResolver(ctx, sutConfig, systemResolverBootstrap)
Expect(err).Should(Succeed())
sut.Next(m)
})
Describe("IsEnabled", func() {
It("is false", func() {
Expect(sut.IsEnabled()).Should(BeFalse())
})
})
Describe("LogConfig", func() {
It("should log something", func() {
logger, hook := log.NewMockEntry()
sut.LogConfig(logger)
Expect(hook.Calls).ShouldNot(BeEmpty())
})
})
Describe("Events", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"gr1": config.NewBytesSources(group1File.Path),
"gr2": config.NewBytesSources(group2File.Path),
},
}
})
When("List is refreshed", func() {
It("event should be fired", func() {
groupCnt := make(map[string]int)
err := Bus().Subscribe(BlockingCacheGroupChanged, func(listType lists.ListCacheType, group string, cnt int) {
groupCnt[group] = cnt
})
Expect(err).Should(Succeed())
// recreate to trigger a reload
sut, err = NewBlockingResolver(ctx, sutConfig, systemResolverBootstrap)
Expect(err).Should(Succeed())
Eventually(groupCnt, "1s").Should(HaveLen(2))
})
})
})
Describe("Blocking with full-qualified client name", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"gr1": config.NewBytesSources(group1File.Path),
"gr2": config.NewBytesSources(group2File.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"gr1"},
"full.qualified.com": {"gr2"},
},
}
})
When("Full-qualified group name is used", func() {
It("should block request", func() {
m.AnswerFn = func(t dns.Type, qName string) (*dns.Msg, error) {
if t == dns.Type(dns.TypeA) && qName == "full.qualified.com." {
return util.NewMsgWithAnswer(qName, 60*60, A, "192.168.178.39")
}
return nil, nil //nolint:nilnil
}
Bus().Publish(ApplicationStarted, "")
Eventually(func(g Gomega) {
g.Expect(sut.Resolve(ctx, newRequestWithClient("blocked2.com.", A, "192.168.178.39", "client1"))).
Should(And(
BeDNSRecord("blocked2.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
))
}, "3s", "100ms").Should(Succeed())
})
})
})
Describe("Blocking with fast init strategy", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"gr1": {config.TextBytesSource("/regex/")},
},
ClientGroupsBlock: map[string][]string{
"default": {"gr1"},
},
Loading: config.SourceLoading{
Init: config.Init{Strategy: config.InitStrategyFast},
},
}
})
When("Domain is on the denylist", func() {
It("should block request", func() {
Eventually(sut.Resolve).
WithContext(ctx).
WithArguments(newRequestWithClient("regex.com.", dns.Type(dns.TypeA), "1.2.1.2", "client1")).
Should(
SatisfyAll(
BeDNSRecord("regex.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
})
Describe("Blocking requests", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockTTL: config.Duration(6 * time.Hour),
Denylists: map[string][]config.BytesSource{
"gr1": config.NewBytesSources(group1File.Path),
"gr2": config.NewBytesSources(group2File.Path),
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
ClientGroupsBlock: map[string][]string{
"Client1": {"gr1"},
"client2,client3": {"gr1"},
"client3": {"gr2"},
"192.168.178.55": {"gr1"},
"altName": {"gr2"},
"10.43.8.67/28": {"gr1"},
"wildcard[0-9]*": {"gr1"},
"default": {"defaultGroup"},
},
BlockType: "ZeroIP",
}
})
When("client name is defined in client groups block", func() {
It("should block the A query if domain is on the denylist (single)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "client1"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block the A query if domain is on the denylist (multipart 1)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "client2"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block the A query if domain is on the denylist (multipart 2)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "client3"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block the A query if domain is on the denylist (merged)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked2.com.", A, "1.2.1.2", "client3"))).
Should(
SatisfyAll(
BeDNSRecord("blocked2.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr2: blocked2.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block the AAAA query if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", AAAA, "1.2.1.2", "client1"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", AAAA, "::"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block the HTTPS query if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", HTTPS, "1.2.1.2", "client1"))).
Should(HaveReturnCode(dns.RcodeNameError))
})
It("should block the MX query if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", MX, "1.2.1.2", "client1"))).
Should(HaveReturnCode(dns.RcodeNameError))
})
})
When("Client ip is defined in client groups block", func() {
It("should block the query if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "192.168.178.55", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("Client CIDR (10.43.8.64 - 10.43.8.79) is defined in client groups block", func() {
It("should not block the query for 10.43.8.63 if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "10.43.8.63", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
It("should not block the query for 10.43.8.80 if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "10.43.8.80", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
})
When("Client CIDR (10.43.8.64 - 10.43.8.79) is defined in client groups block", func() {
It("should block the query for 10.43.8.64 if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "10.43.8.64", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block the query for 10.43.8.79 if domain is on the denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "10.43.8.79", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("Client has multiple names and for each name a client group block definition exists", func() {
It("should block query if domain is in one group", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "client1", "altname"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should block query if domain is in another group too", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked2.com.", A, "1.2.1.2", "client1", "altName"))).
Should(
SatisfyAll(
BeDNSRecord("blocked2.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr2: blocked2.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("Client name matches wildcard", func() {
It("should block query if domain is in one group", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "wildcard1name"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (gr1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("Default group is defined", func() {
It("should block domains from default group for each client", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("BlockType is NxDomain", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
BlockType: "NxDomain",
}
})
It("should return NXDOMAIN with SOA if query is blocked", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeNameError),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveAuthority(),
HaveSOARecord(60, 60), // 1 minute = 60 seconds
))
})
})
When("BlockType is NXDOMAIN with custom BlockTTL", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "NxDomain",
BlockTTL: config.Duration(time.Hour * 2), // 2 hours = 7200 seconds
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
}
})
It("should return NXDOMAIN with SOA containing custom TTL", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeNameError),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveAuthority(),
HaveSOARecord(7200, 7200), // 2 hours in seconds
))
})
})
When("BlockTTL is set", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
BlockTTL: config.Duration(time.Second * 1234),
}
})
It("should return answer with specified TTL", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 1234)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
))
})
When("BlockType is custom IP", func() {
BeforeEach(func() {
sutConfig.BlockType = "12.12.12.12"
})
It("should return custom IP with specified TTL", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "12.12.12.12"),
HaveTTL(BeNumerically("==", 1234)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
))
})
})
})
When("BlockType is custom IP", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockTTL: config.Duration(6 * time.Hour),
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
BlockType: "12.12.12.12, 2001:0db8:85a3:0000:0000:8a2e:0370:7334",
}
})
It("should return ipv4 address for A query if query is blocked", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "12.12.12.12"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
))
})
It("should return ipv6 address for AAAA query if query is blocked", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", AAAA, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", AAAA, "2001:db8:85a3::8a2e:370:7334"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
))
})
})
When("BlockType is custom IP only for ipv4", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
BlockType: "12.12.12.12",
BlockTTL: config.Duration(6 * time.Hour),
}
})
It("should use fallback for ipv6 and return zero ip", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", AAAA, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", AAAA, "::"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
))
})
})
When("Denylist contains IP", func() {
When("IP4", func() {
BeforeEach(func() {
// return defined IP as response
mockAnswer, _ = util.NewMsgWithAnswer("example.com.", 300, A, "123.145.123.145")
})
It("should block query, if lookup result contains denylisted IP", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("example.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("example.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED IP (defaultGroup: 123.145.123.145)"),
))
})
})
When("IP6", func() {
BeforeEach(func() {
// return defined IP as response
mockAnswer, _ = util.NewMsgWithAnswer(
"example.com.", 300,
AAAA, "2001:0db8:85a3:08d3::0370:7344",
)
})
It("should block query, if lookup result contains denylisted IP", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("example.com.", AAAA, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("example.com.", AAAA, "::"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED IP (defaultGroup: 2001:db8:85a3:8d3::370:7344)"),
))
})
})
})
When("denylist contains domain which is CNAME in response", func() {
BeforeEach(func() {
// reconfigure mock, to return CNAMEs
rr1, _ := dns.NewRR("example.com 300 IN CNAME domain.com")
rr2, _ := dns.NewRR("domain.com 300 IN CNAME badcnamedomain.com")
rr3, _ := dns.NewRR("badcnamedomain.com 300 IN A 125.125.125.125")
mockAnswer = new(dns.Msg)
mockAnswer.Answer = []dns.RR{rr1, rr2, rr3}
})
It("should block the query, if response contains a CNAME with domain on a denylist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("example.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("example.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 21600)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED CNAME (defaultGroup: badcnamedomain.com)"),
))
})
})
})
Describe("Schedule-based blocking", func() {
When("schedule is currently active", func() {
BeforeEach(func() {
// Create a schedule that's always active (all days, all hours)
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
Schedules: map[string]config.Schedule{
"always": {
Weekdays: []config.Weekday{
config.Weekday(time.Sunday),
config.Weekday(time.Monday),
config.Weekday(time.Tuesday),
config.Weekday(time.Wednesday),
config.Weekday(time.Thursday),
config.Weekday(time.Friday),
config.Weekday(time.Saturday),
},
},
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
ListSchedules: map[string][]string{
"defaultGroup": {"always"},
},
}
})
It("should block the request", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("schedule is not currently active", func() {
BeforeEach(func() {
// Create a schedule for a day/time that is definitely not now
// Pick a weekday 3 days from now to avoid overnight spillover edge cases
notToday := (time.Now().Weekday() + 3) % 7
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
Schedules: map[string]config.Schedule{
"never-now": {
Start: "00:00",
End: "00:01",
Weekdays: []config.Weekday{config.Weekday(notToday)},
},
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
ListSchedules: map[string][]string{
"defaultGroup": {"never-now"},
},
}
})
It("should not block the request", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("mixing scheduled and unscheduled groups", func() {
BeforeEach(func() {
notToday := (time.Now().Weekday() + 3) % 7
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"gr1": config.NewBytesSources(group1File.Path),
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
Schedules: map[string]config.Schedule{
"never-now": {
Start: "00:00",
End: "00:01",
Weekdays: []config.Weekday{config.Weekday(notToday)},
},
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup", "gr1"},
},
ListSchedules: map[string][]string{
"defaultGroup": {"never-now"}, // inactive
},
}
})
It("should block via the always-active group", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should not block via the inactive scheduled group", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("multiple list schedules are configured", func() {
BeforeEach(func() {
notToday := (time.Now().Weekday() + 3) % 7
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"gr1": config.NewBytesSources(group1File.Path),
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
Schedules: map[string]config.Schedule{
"always": {
Weekdays: []config.Weekday{
config.Weekday(time.Sunday),
config.Weekday(time.Monday),
config.Weekday(time.Tuesday),
config.Weekday(time.Wednesday),
config.Weekday(time.Thursday),
config.Weekday(time.Friday),
config.Weekday(time.Saturday),
},
},
"never-now": {
Start: "00:00",
End: "00:01",
Weekdays: []config.Weekday{config.Weekday(notToday)},
},
},
ClientGroupsBlock: map[string][]string{
"default": {"gr1", "defaultGroup"},
},
ListSchedules: map[string][]string{
"gr1": {"always"},
"defaultGroup": {"never-now"},
},
}
})
It("should block the list with an active schedule", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
))
})
It("should not block the list with an inactive schedule", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("a list has multiple schedules (OR logic)", func() {
BeforeEach(func() {
notToday := (time.Now().Weekday() + 3) % 7
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
Schedules: map[string]config.Schedule{
"always": {
Weekdays: []config.Weekday{
config.Weekday(time.Sunday),
config.Weekday(time.Monday),
config.Weekday(time.Tuesday),
config.Weekday(time.Wednesday),
config.Weekday(time.Thursday),
config.Weekday(time.Friday),
config.Weekday(time.Saturday),
},
},
"never-now": {
Start: "00:00",
End: "00:01",
Weekdays: []config.Weekday{config.Weekday(notToday)},
},
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
ListSchedules: map[string][]string{
"defaultGroup": {"never-now", "always"},
},
}
})
It("should block because at least one schedule is active", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("listSchedules references unknown schedule names", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
},
Schedules: map[string]config.Schedule{},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup"},
},
ListSchedules: map[string][]string{
"defaultGroup": {"typo-schedule"},
},
}
})
It("should treat the group as inactive instead of always-active", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
})
Describe("Allowlisting", func() {
When("Requested domain is on black and allowlist", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{"gr1": config.NewBytesSources(group1File.Path)},
Allowlists: map[string][]config.BytesSource{"gr1": config.NewBytesSources(group1File.Path)},
ClientGroupsBlock: map[string][]string{
"default": {"gr1"},
},
}
})
It("Should not be blocked", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
})
When("Only allowlist is defined", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "zeroIP",
BlockTTL: config.Duration(60 * time.Second),
Allowlists: map[string][]config.BytesSource{
"gr1": config.NewBytesSources(group1File.Path),
"gr2": config.NewBytesSources(group2File.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"gr1"},
"one-client": {"gr1"},
"two-client": {"gr2"},
"all-client": {"gr1", "gr2"},
},
}
})
It("should block everything else except domains on the allowlist with default group", func() {
By("querying domain on the allowlist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
By("querying another domain, which is not on the allowlist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("google.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("google.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (ALLOWLIST ONLY)"),
))
Expect(m.Calls).Should(HaveLen(1))
})
})
It("should block everything else except domains on the allowlist "+
"if multiple allowlist only groups are defined", func() {
By("querying domain on the allowlist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "one-client"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
By("querying another domain, which is not on the allowlist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked2.com.", A, "1.2.1.2", "one-client"))).
Should(
SatisfyAll(
BeDNSRecord("blocked2.com.", A, "0.0.0.0"),
HaveTTL(BeNumerically("==", 60)),
HaveResponseType(ResponseTypeBLOCKED),
HaveReturnCode(dns.RcodeSuccess),
HaveReason("BLOCKED (ALLOWLIST ONLY)"),
))
Expect(m.Calls).Should(HaveLen(1))
})
})
It("should block everything else except domains on the allowlist "+
"if multiple allowlist only groups are defined", func() {
By("querying domain on the allowlist group 1", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "all-client"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
By("querying another domain, which is in the allowlist group 1", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked2.com.", A, "1.2.1.2", "all-client"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
Expect(m.Calls).Should(HaveLen(2))
})
})
})
When("IP address is on black and allowlist", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{"gr1": config.NewBytesSources(group1File.Path)},
Allowlists: map[string][]config.BytesSource{"gr1": config.NewBytesSources(defaultGroupFile.Path)},
ClientGroupsBlock: map[string][]string{
"default": {"gr1"},
},
}
mockAnswer, _ = util.NewMsgWithAnswer("example.com.", 300, A, "123.145.123.145")
})
It("should not block if DNS answer contains IP from the allowlist", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("example.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("example.com.", A, "123.145.123.145"),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
})
})
Describe("Delegate request to next resolver", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
Denylists: map[string][]config.BytesSource{"gr1": config.NewBytesSources(group1File.Path)},
ClientGroupsBlock: map[string][]string{
"default": {"gr1"},
},
}
})
AfterEach(func() {
// was delegated to next resolver
m.AssertExpectations(GinkgoT())
})
When("domain is not on the denylist", func() {
It("should delegate to next resolver", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("example.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
When("no lists defined", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
BlockType: "ZEROIP",
BlockTTL: config.Duration(time.Minute),
}
})
It("should delegate to next resolver", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("example.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
})
Describe("Control status via API", func() {
BeforeEach(func() {
sutConfig = config.Blocking{
Denylists: map[string][]config.BytesSource{
"defaultGroup": config.NewBytesSources(defaultGroupFile.Path),
"group1": config.NewBytesSources(group1File.Path),
},
ClientGroupsBlock: map[string][]string{
"default": {"defaultGroup", "group1"},
},
BlockType: "ZeroIP",
}
})
When("Disable blocking is called", func() {
It("no query should be blocked", func() {
By("Perform query to ensure that the blocking status is active (defaultGroup)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("Perform query to ensure that the blocking status is active (group1)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (group1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("Calling Rest API to deactivate all groups", func() {
err := sut.DisableBlocking(context.TODO(), 0, []string{})
Expect(err).Should(Succeed())
})
By("perform the same query again (defaultGroup)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
m.AssertExpectations(GinkgoT())
m.AssertNumberOfCalls(GinkgoT(), "Resolve", 1)
})
By("perform the same query again (group1)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
m.AssertExpectations(GinkgoT())
m.AssertNumberOfCalls(GinkgoT(), "Resolve", 2)
})
By("Calling Rest API to deactivate only defaultGroup", func() {
err := sut.DisableBlocking(context.TODO(), 0, []string{"defaultGroup"})
Expect(err).Should(Succeed())
})
By("perform the same query again (defaultGroup)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
m.AssertExpectations(GinkgoT())
m.AssertNumberOfCalls(GinkgoT(), "Resolve", 3)
})
By("Perform query to ensure that the blocking status is active (group1)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (group1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
})
When("Disable blocking for all groups is called with a duration parameter", func() {
It("No query should be blocked only for passed amount of time", func() {
By("Perform query to ensure that the blocking status is active (defaultGroup)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("Perform query to ensure that the blocking status is active (group1)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (group1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("Calling Rest API to deactivate blocking for 0.5 sec", func() {
enabled := make(chan bool, 1)
err := Bus().SubscribeOnce(BlockingEnabledEvent, func(state bool) {
enabled <- state
})
Expect(err).Should(Succeed())
err = sut.DisableBlocking(context.TODO(), 500*time.Millisecond, []string{})
Expect(err).Should(Succeed())
Eventually(enabled, "1s").Should(Receive(BeFalse()))
})
By("perform the same query again to ensure that this query will not be blocked (defaultGroup)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
m.AssertExpectations(GinkgoT())
m.AssertNumberOfCalls(GinkgoT(), "Resolve", 1)
})
By("perform the same query again to ensure that this query will not be blocked (group1)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
m.AssertExpectations(GinkgoT())
m.AssertNumberOfCalls(GinkgoT(), "Resolve", 2)
})
By("Wait 1 sec and perform the same query again, should be blocked now", func() {
enabled := make(chan bool, 1)
_ = Bus().SubscribeOnce(BlockingEnabledEvent, func(state bool) {
enabled <- state
})
// wait 1 sec
Eventually(enabled, "1s").Should(Receive(BeTrue()))
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (group1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
})
When("Disable blocking for one group is called with a duration parameter", func() {
It("No query should be blocked only for passed amount of time", func() {
By("Perform query to ensure that the blocking status is active (defaultGroup)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("Perform query to ensure that the blocking status is active (group1)", func() {
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (group1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("Calling Rest API to deactivate blocking for one group for 0.5 sec", func() {
enabled := make(chan bool, 1)
err := Bus().SubscribeOnce(BlockingEnabledEvent, func(state bool) {
enabled <- false
})
Expect(err).Should(Succeed())
err = sut.DisableBlocking(context.TODO(), 500*time.Millisecond, []string{"group1"})
Expect(err).Should(Succeed())
Eventually(enabled, "1s").Should(Receive(BeFalse()))
})
By("perform the same query again to ensure that this query will not be blocked (defaultGroup)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
By("perform the same query again to ensure that this query will not be blocked (group1)", func() {
// now is blocking disabled, query the url again
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
HaveNoAnswer(),
HaveResponseType(ResponseTypeRESOLVED),
HaveReturnCode(dns.RcodeSuccess),
))
m.AssertExpectations(GinkgoT())
m.AssertNumberOfCalls(GinkgoT(), "Resolve", 1)
})
By("Wait 1 sec and perform the same query again, should be blocked now", func() {
enabled := make(chan bool, 1)
_ = Bus().SubscribeOnce(BlockingEnabledEvent, func(state bool) {
enabled <- state
})
// wait 1 sec
Eventually(enabled, "1s").Should(Receive(BeTrue()))
Expect(sut.Resolve(ctx, newRequestWithClient("blocked3.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("blocked3.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (defaultGroup: blocked3.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
Expect(sut.Resolve(ctx, newRequestWithClient("domain1.com.", A, "1.2.1.2", "unknown"))).
Should(
SatisfyAll(
BeDNSRecord("domain1.com.", A, "0.0.0.0"),
HaveResponseType(ResponseTypeBLOCKED),
HaveReason("BLOCKED (group1: domain1.com)"),
HaveReturnCode(dns.RcodeSuccess),
))
})
})
})
When("Disable blocking is called with wrong group name", func() {
It("should fail", func() {
err := sut.DisableBlocking(context.TODO(), 500*time.Millisecond, []string{"unknownGroupName"})
Expect(err).Should(HaveOccurred())
})
})
When("Blocking status is called", func() {
It("should return correct status", func() {
By("enable blocking via API", func() {
sut.EnableBlocking(context.TODO())
})
By("Query blocking status via API should return 'enabled'", func() {
result := sut.BlockingStatus()
Expect(result.Enabled).Should(BeTrue())
})
By("disable blocking via API", func() {
err := sut.DisableBlocking(context.TODO(), 500*time.Millisecond, []string{})
Expect(err).Should(Succeed())
})
By("Query blocking status via API again should return 'disabled'", func() {
result := sut.BlockingStatus()
Expect(result.Enabled).Should(BeFalse())
})
})
})
})
Describe("Create resolver with wrong parameter", func() {
When("Wrong blockType is used", func() {
It("should return error", func() {
_, err := NewBlockingResolver(ctx, config.Blocking{
BlockType: "wrong",
}, systemResolverBootstrap)
Expect(err).Should(HaveOccurred())
Expect(err.Error()).Should(ContainSubstring(
"unknown blockType 'wrong', please use one of: ZeroIP, NxDomain or specify destination IP address(es)"))
})
})
When("strategy is failOnError", func() {
It("should fail if lists can't be downloaded", func() {
_, err := NewBlockingResolver(ctx, config.Blocking{
Denylists: map[string][]config.BytesSource{"gr1": config.NewBytesSources("wrongPath")},
Allowlists: map[string][]config.BytesSource{"allowlist": config.NewBytesSources("wrongPath")},
Loading: config.SourceLoading{
Init: config.Init{Strategy: config.InitStrategyFailOnError},
},
BlockType: "zeroIp",
}, systemResolverBootstrap)
Expect(err).Should(HaveOccurred())
})
})
})
Describe("Remote blocking state via event bus", func() {
When("BlockingStateChangedRemote with enabled=true is received", func() {
It("should enable blocking", func() {
Expect(sut.DisableBlocking(ctx, 0, []string{})).Should(Succeed())
Expect(sut.BlockingStatus().Enabled).Should(BeFalse())
Bus().Publish(BlockingStateChangedRemote, BlockingState{Enabled: true})
Eventually(func() bool {
return sut.BlockingStatus().Enabled
}).Should(BeTrue())
})
})
When("BlockingStateChangedRemote with enabled=false is received", func() {
It("should disable blocking", func() {
Bus().Publish(BlockingStateChangedRemote, BlockingState{
Enabled: false,
Groups: []string{},
})
Eventually(func() bool {
return sut.BlockingStatus().Enabled
}).Should(BeFalse())
})
})
})
})
var _ = Describe("formatBlockReason", func() {
It("renders the matched group and rule", func() {
Expect(formatBlockReason(map[string]string{"gr1": "domain1.com"}, "")).
Should(Equal("BLOCKED (gr1: domain1.com)"))
})
It("includes the entry type when given (e.g. CNAME/IP)", func() {
Expect(formatBlockReason(map[string]string{"ads": "*.docler.com"}, "CNAME")).
Should(Equal("BLOCKED CNAME (ads: *.docler.com)"))
})
It("renders multiple matched groups sorted by group for deterministic output", func() {
matches := map[string]string{"zeta": "z.com", "alpha": "a.com", "mid": "m.com"}
// repeat to guard against Go's randomized map iteration order
for range 20 {
Expect(formatBlockReason(matches, "")).
Should(Equal("BLOCKED (alpha: a.com, mid: m.com, zeta: z.com)"))
}
})
})
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