mirror of https://github.com/0xERR0R/blocky.git
215 lines
7.7 KiB
Go
215 lines
7.7 KiB
Go
package resolver
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import (
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"net"
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"time"
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"github.com/0xERR0R/blocky/config"
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. "github.com/0xERR0R/blocky/helpertest"
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. "github.com/0xERR0R/blocky/model"
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"github.com/miekg/dns"
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. "github.com/onsi/ginkgo/v2"
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. "github.com/onsi/gomega"
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"github.com/stretchr/testify/mock"
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)
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var _ = Describe("CustomDNSResolver", func() {
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var (
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sut ChainedResolver
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m *MockResolver
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err error
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resp *Response
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cfg config.CustomDNSConfig
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)
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TTL := uint32(time.Now().Second())
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BeforeEach(func() {
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cfg = config.CustomDNSConfig{
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Mapping: config.CustomDNSMapping{HostIPs: map[string][]net.IP{
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"custom.domain": {net.ParseIP("192.168.143.123")},
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"ip6.domain": {net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334")},
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"multiple.ips": {
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net.ParseIP("192.168.143.123"),
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net.ParseIP("192.168.143.125"),
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net.ParseIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334")},
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}},
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CustomTTL: config.Duration(time.Duration(TTL) * time.Second),
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FilterUnmappedTypes: true,
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}
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})
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JustBeforeEach(func() {
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sut = NewCustomDNSResolver(cfg)
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m = &MockResolver{}
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m.On("Resolve", mock.Anything).Return(&Response{Res: new(dns.Msg)}, nil)
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sut.Next(m)
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})
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Describe("Resolving custom name via CustomDNSResolver", func() {
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When("Ip 4 mapping is defined for custom domain and", func() {
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Context("filterUnmappedTypes is true", func() {
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BeforeEach(func() { cfg.FilterUnmappedTypes = true })
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It("defined ip4 query should be resolved", func() {
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resp, err = sut.Resolve(newRequest("custom.domain.", dns.Type(dns.TypeA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(BeDNSRecord("custom.domain.", dns.TypeA, TTL, "192.168.143.123"))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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It("TXT query for defined mapping should return NOERROR and empty result", func() {
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resp, err = sut.Resolve(newRequest("custom.domain.", dns.Type(dns.TypeTXT)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(HaveLen(0))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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It("ip6 query should return NOERROR and empty result", func() {
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resp, err = sut.Resolve(newRequest("custom.domain.", dns.Type(dns.TypeAAAA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(HaveLen(0))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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})
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Context("filterUnmappedTypes is false", func() {
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BeforeEach(func() { cfg.FilterUnmappedTypes = false })
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It("defined ip4 query should be resolved", func() {
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resp, err = sut.Resolve(newRequest("custom.domain.", dns.Type(dns.TypeA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(BeDNSRecord("custom.domain.", dns.TypeA, TTL, "192.168.143.123"))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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It("TXT query for defined mapping should be delegated to next resolver", func() {
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resp, err = sut.Resolve(newRequest("custom.domain.", dns.Type(dns.TypeTXT)))
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// delegate was executed
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m.AssertExpectations(GinkgoT())
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})
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It("ip6 query should return NOERROR and empty result", func() {
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resp, err = sut.Resolve(newRequest("custom.domain.", dns.Type(dns.TypeAAAA)))
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// delegate was executed
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m.AssertExpectations(GinkgoT())
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})
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})
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})
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When("Ip 6 mapping is defined for custom domain ", func() {
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It("ip6 query should be resolved", func() {
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resp, err = sut.Resolve(newRequest("ip6.domain.", dns.Type(dns.TypeAAAA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(BeDNSRecord("ip6.domain.", dns.TypeAAAA, TTL, "2001:db8:85a3::8a2e:370:7334"))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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})
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When("Multiple IPs are defined for custom domain ", func() {
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It("all IPs for the current type should be returned", func() {
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By("IPv6 query", func() {
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resp, err = sut.Resolve(newRequest("multiple.ips.", dns.Type(dns.TypeAAAA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(BeDNSRecord("multiple.ips.", dns.TypeAAAA, TTL, "2001:db8:85a3::8a2e:370:7334"))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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By("IPv4 query", func() {
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resp, err = sut.Resolve(newRequest("multiple.ips.", dns.Type(dns.TypeA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(HaveLen(2))
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Expect(resp.Res.Answer).Should(ContainElements(
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BeDNSRecord("multiple.ips.", dns.TypeA, TTL, "192.168.143.123"),
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BeDNSRecord("multiple.ips.", dns.TypeA, TTL, "192.168.143.125")))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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})
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})
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When("Reverse DNS request is received", func() {
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It("should resolve the defined domain name", func() {
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By("ipv4", func() {
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resp, err = sut.Resolve(newRequest("123.143.168.192.in-addr.arpa.", dns.Type(dns.TypePTR)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(HaveLen(2))
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Expect(resp.Res.Answer).Should(ContainElements(
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BeDNSRecord("123.143.168.192.in-addr.arpa.", dns.TypePTR, TTL, "custom.domain."),
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BeDNSRecord("123.143.168.192.in-addr.arpa.", dns.TypePTR, TTL, "multiple.ips.")))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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By("ipv6", func() {
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resp, err = sut.Resolve(newRequest("4.3.3.7.0.7.3.0.e.2.a.8.0.0.0.0.0.0.0.0.3.a.5.8.8.b.d.0.1.0.0.2.ip6.arpa.",
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dns.Type(dns.TypePTR)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(HaveLen(2))
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Expect(resp.Res.Answer).Should(ContainElements(
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BeDNSRecord("4.3.3.7.0.7.3.0.e.2.a.8.0.0.0.0.0.0.0.0.3.a.5.8.8.b.d.0.1.0.0.2.ip6.arpa.",
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dns.TypePTR, TTL, "ip6.domain."),
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BeDNSRecord("4.3.3.7.0.7.3.0.e.2.a.8.0.0.0.0.0.0.0.0.3.a.5.8.8.b.d.0.1.0.0.2.ip6.arpa.",
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dns.TypePTR, TTL, "multiple.ips.")))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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})
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})
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When("Domain mapping is defined", func() {
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It("subdomain must also match", func() {
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resp, err = sut.Resolve(newRequest("ABC.CUSTOM.DOMAIN.", dns.Type(dns.TypeA)))
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Expect(resp.Res.Rcode).Should(Equal(dns.RcodeSuccess))
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Expect(resp.Res.Answer).Should(BeDNSRecord("ABC.CUSTOM.DOMAIN.", dns.TypeA, TTL, "192.168.143.123"))
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// will not delegate to next resolver
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m.AssertNotCalled(GinkgoT(), "Resolve", mock.Anything)
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})
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})
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AfterEach(func() {
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Expect(err).Should(Succeed())
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})
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})
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Describe("Delegating to next resolver", func() {
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When("no mapping for domain exist", func() {
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It("should delegate to next resolver", func() {
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resp, err = sut.Resolve(newRequest("example.com.", dns.Type(dns.TypeA)))
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Expect(err).Should(Succeed())
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// delegate was executed
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m.AssertExpectations(GinkgoT())
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})
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})
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})
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Describe("Configuration output", func() {
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When("resolver is enabled", func() {
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It("should return configuration", func() {
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c := sut.Configuration()
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Expect(c).Should(HaveLen(3))
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})
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})
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When("resolver is disabled", func() {
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BeforeEach(func() {
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cfg = config.CustomDNSConfig{}
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})
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It("should return 'disabled'", func() {
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c := sut.Configuration()
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Expect(c).Should(HaveLen(1))
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Expect(c).Should(Equal([]string{"deactivated"}))
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})
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})
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})
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})
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