checker: Move checks in checks.go
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@ -1,19 +1,12 @@
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package main
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/go-ping/ping"
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"github.com/miekg/dns"
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"git.nemunai.re/srs/adlin/libadlin"
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)
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@ -29,515 +22,6 @@ var (
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domainsHostingMap = map[string]string{}
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)
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// ICMP
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func check_ping(ip string, cb func(pkt *ping.Packet)) (err error) {
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var pinger *ping.Pinger
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pinger, err = ping.NewPinger(ip)
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if err != nil {
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if verbose {
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log.Printf("check_ping: %s: %s", ip, err.Error())
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}
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return
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}
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defer pinger.Stop()
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pinger.Timeout = time.Second * 5
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pinger.Count = 1
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pinger.OnRecv = cb
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pinger.SetPrivileged(true)
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err = pinger.Run()
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return
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}
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// PORT 53
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func get_GLUE(student *adlin.Student) (aaaa net.IP, err error) {
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client := dns.Client{Net: "tcp", Timeout: time.Second * 5}
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domain := student.MyDelegatedDomain()
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dnssrv := "[2a01:e0a:2b:2250::b]:53"
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if strings.HasSuffix(domain, student.MyDelegatedDomainSuffix()) {
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dnssrv = "[2a01:e0a:2b:2250::b]:53"
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} else if v, ok := domainsHostingMap[domain]; ok {
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dnssrv = v
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} else {
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// Looking for root NS
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m := new(dns.Msg)
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m.SetQuestion(".", dns.TypeNS)
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m.RecursionDesired = false
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m.SetEdns0(4096, true)
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var r *dns.Msg
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r, _, err = client.Exchange(m, dnssrv)
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if err != nil {
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return
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}
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if r == nil {
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return nil, errors.New("response is nil during initial recursion")
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}
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if r.Rcode != dns.RcodeSuccess {
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return nil, errors.New("failed to get a valid answer during initial recursion")
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}
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for _, answer := range r.Answer {
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if t, ok := answer.(*dns.NS); ok {
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dnssrv = t.Ns + ":53"
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}
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}
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// Do casual recursion
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i := 0
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recursion:
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for i = 0; i < 10; i++ {
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m := new(dns.Msg)
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m.SetQuestion(domain, dns.TypeNS)
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m.RecursionDesired = false
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m.SetEdns0(4096, true)
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var r *dns.Msg
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r, _, err = client.Exchange(m, dnssrv)
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if err != nil {
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return
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}
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if r == nil {
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return nil, errors.New("response is nil during recursion")
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}
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if r.Rcode != dns.RcodeSuccess {
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return nil, errors.New("failed to get a valid answer during recursion")
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}
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for _, answer := range r.Ns {
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if t, ok := answer.(*dns.NS); ok {
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dnssrv = t.Ns + ":53"
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if t.Header().Name == domain {
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break recursion
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}
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}
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}
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}
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if i >= 10 {
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return nil, fmt.Errorf("too much name recursions")
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} else {
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domainsHostingMap[domain] = dnssrv
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}
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}
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m := new(dns.Msg)
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m.SetQuestion(domain, dns.TypeNS)
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m.RecursionDesired = false
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m.SetEdns0(4096, true)
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var r *dns.Msg
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r, _, err = client.Exchange(m, dnssrv)
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if err != nil {
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return
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}
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if r == nil {
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return nil, errors.New("response is nil")
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}
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if r.Rcode != dns.RcodeSuccess {
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return nil, errors.New("failed to get a valid answer")
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}
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for _, extra := range r.Extra {
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if t, ok := extra.(*dns.AAAA); ok {
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aaaa = t.AAAA
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}
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}
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return
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}
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func check_dns(domain, ip string) (aaaa net.IP, err error) {
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client := dns.Client{Timeout: time.Second * 5}
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m := new(dns.Msg)
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m.SetQuestion(domain, dns.TypeAAAA)
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var r *dns.Msg
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r, _, err = client.Exchange(m, fmt.Sprintf("[%s]:53", ip))
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if err != nil {
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return
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}
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if r == nil {
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err = errors.New("response is nil")
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return
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}
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if r.Rcode != dns.RcodeSuccess {
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err = errors.New("failed to get a valid answer")
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return
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}
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for _, answer := range r.Answer {
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if t, ok := answer.(*dns.AAAA); ok {
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aaaa = t.AAAA
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}
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}
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return
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}
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func check_dnssec(domain, ip string) (err error) {
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client := dns.Client{Net: "tcp", Timeout: time.Second * 10}
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// Get DNSKEY
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m := new(dns.Msg)
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m.SetEdns0(4096, true)
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m.SetQuestion(domain, dns.TypeDNSKEY)
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var r *dns.Msg
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r, _, err = client.Exchange(m, fmt.Sprintf("[%s]:53", ip))
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if err != nil {
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return
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}
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if r == nil {
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return errors.New("response is nil")
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}
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if r.Rcode != dns.RcodeSuccess {
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return errors.New("failed to get a valid answer when getting DNSKEY")
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}
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var rrs []dns.RR
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var dnskeys []*dns.DNSKEY
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var dnskeysig *dns.RRSIG
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for _, answer := range r.Answer {
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if t, ok := answer.(*dns.DNSKEY); ok {
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dnskeys = append(dnskeys, t)
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rrs = append(rrs, dns.RR(t))
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} else if t, ok := answer.(*dns.RRSIG); ok {
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dnskeysig = t
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}
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}
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if dnskeysig == nil {
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return fmt.Errorf("Unable to verify DNSKEY record signature: No RRSIG found for DNSKEY record.")
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}
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found := false
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for _, dnskey := range dnskeys {
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if err = dnskeysig.Verify(dnskey, rrs); err == nil {
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found = true
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break
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}
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}
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if !found {
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return fmt.Errorf("Unable to verify DNSKEY record signature: %w", err)
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}
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// Check AAAA validity
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m = new(dns.Msg)
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m.SetEdns0(4096, true)
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m.SetQuestion(domain, dns.TypeAAAA)
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r, _, err = client.Exchange(m, fmt.Sprintf("[%s]:53", ip))
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if err != nil {
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return
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}
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if r == nil {
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return errors.New("response is nil")
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}
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if r.Rcode != dns.RcodeSuccess {
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return errors.New("failed to get a valid answer when getting AAAA records")
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}
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rrs = []dns.RR{}
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var aaaas []*dns.AAAA
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var aaaasig *dns.RRSIG
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for _, answer := range r.Answer {
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if t, ok := answer.(*dns.AAAA); ok {
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aaaas = append(aaaas, t)
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rrs = append(rrs, t)
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} else if t, ok := answer.(*dns.RRSIG); ok {
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aaaasig = t
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}
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}
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if len(aaaas) == 0 {
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return errors.New("Something odd happen: no AAAA record found.")
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}
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if aaaasig == nil {
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return fmt.Errorf("Unable to verify AAAA record signature: No RRSIG found for AAAA record.")
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}
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found = false
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for _, dnskey := range dnskeys {
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if err = aaaasig.Verify(dnskey, rrs); err == nil {
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found = true
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if !aaaasig.ValidityPeriod(time.Now()) {
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utc := time.Now().UTC().Unix()
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modi := (int64(aaaasig.Inception) - utc) / year68
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ti := int64(aaaasig.Inception) + modi*year68
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mode := (int64(aaaasig.Expiration) - utc) / year68
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te := int64(aaaasig.Expiration) + mode*year68
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if ti > utc {
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return fmt.Errorf("Unable to verify AAAA record signature: signature not yet valid")
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} else if utc > te {
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return fmt.Errorf("Unable to verify AAAA record signature: signature expired")
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} else {
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return fmt.Errorf("Unable to verify AAAA record signature: signature expired or not yet valid")
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}
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}
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break
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}
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}
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if !found {
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return fmt.Errorf("Unable to verify AAAA record signature: %w", err)
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}
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// Check DS
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m = new(dns.Msg)
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m.SetQuestion(domain, dns.TypeDS)
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m.RecursionDesired = false
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m.SetEdns0(4096, true)
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r, _, err = client.Exchange(m, "[2a01:e0a:2b:2250::b]:53")
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if err != nil {
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return
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}
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if r == nil {
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return errors.New("response is nil")
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}
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if r.Rcode != dns.RcodeSuccess {
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return errors.New("failed to get a valid answer when getting DS records in parent server")
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}
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found = false
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for _, answer := range r.Answer {
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if t, ok := answer.(*dns.DS); ok {
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for _, dnskey := range dnskeys {
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expectedDS := dnskey.ToDS(dns.SHA256)
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if expectedDS.KeyTag == t.KeyTag && expectedDS.Algorithm == t.Algorithm && expectedDS.DigestType == t.DigestType && expectedDS.Digest == t.Digest {
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found = true
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err = nil
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break
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} else {
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err = fmt.Errorf("DS record found in parent zone differs from DNSKEY %v vs. %v.", expectedDS, t)
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}
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}
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}
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}
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if !found {
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if err == nil {
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return fmt.Errorf("Unable to find a valid DS record in parent zone (if you use your own domain (ie. not given by maatma), this can be due to a previously cached response, you should wait).")
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} else {
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return err
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}
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}
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return
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}
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// PORT 80
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func check_http(ip, dn string) (err error) {
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client := &http.Client{
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CheckRedirect: func(req *http.Request, via []*http.Request) error {
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return http.ErrUseLastResponse
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},
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}
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req, errr := http.NewRequest("GET", fmt.Sprintf("http://[%s]/", ip), nil)
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if errr != nil {
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return errr
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}
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if dn != "" {
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req.Header.Add("Host", strings.TrimSuffix(dn, "."))
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}
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var resp *http.Response
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resp, err = client.Do(req)
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if err != nil {
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return
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}
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defer resp.Body.Close()
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if dn != "" && resp.StatusCode >= 400 {
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return fmt.Errorf("Bad status, got: %d (%s)", resp.StatusCode, resp.Status)
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}
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_, err = ioutil.ReadAll(resp.Body)
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return
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}
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// PORT 443
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func check_https(domain, ip string) (err error) {
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var resp *http.Response
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resp, err = http.Get(fmt.Sprintf("https://%s/", strings.TrimSuffix(domain, ".")))
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if err != nil {
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return
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}
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defer resp.Body.Close()
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if resp.StatusCode >= 300 && resp.StatusCode < 400 {
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loc := resp.Header.Get("Location")
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if loc != "" && strings.HasSuffix(dns.Fqdn(loc), domain) {
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if dns.Fqdn(loc) == domain {
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return fmt.Errorf("Redirection loop %s redirect to %s", domain, loc)
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} else if err = check_https(dns.Fqdn(loc), ip); err != nil {
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return fmt.Errorf("Error after following redirection to %s: %w", loc, err)
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} else {
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return
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}
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}
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}
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if resp.StatusCode >= 300 {
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return fmt.Errorf("Bad status, got: %d (%s)", resp.StatusCode, resp.Status)
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}
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_, err = ioutil.ReadAll(resp.Body)
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return
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}
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// MATRIX
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type matrix_result struct {
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WellKnownResult struct {
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Server string `json:"m.server"`
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Result string `json:"result"`
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}
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DNSResult struct {
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SRVError *struct {
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Message string
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}
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}
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ConnectionReports map[string]struct {
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Errors []string
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}
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ConnectionErrors map[string]struct {
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Message string
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}
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Version struct {
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Name string `json:"name"`
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Version string `json:"version"`
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}
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FederationOK bool `json:"FederationOK"`
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}
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func check_matrix_federation(domain string) (version string, err error) {
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var resp *http.Response
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resp, err = http.Get(fmt.Sprintf("https://federation-tester.adlin.nemunai.re/api/report?server_name=%s", strings.TrimSuffix(domain, ".")))
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if err != nil {
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return
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}
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defer resp.Body.Close()
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if resp.StatusCode >= 300 {
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return "", fmt.Errorf("Sorry, the federation tester is broken. Check on https://federationtester.matrix.org/#%s", strings.TrimSuffix(domain, "."))
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}
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var federationTest matrix_result
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if err = json.NewDecoder(resp.Body).Decode(&federationTest); err != nil {
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log.Printf("Error in check_matrix_federation, when decoding json: %s", err.Error())
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return "", fmt.Errorf("Sorry, the federation tester is broken. Check on https://federationtester.matrix.org/#%s", strings.TrimSuffix(domain, "."))
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} else if federationTest.FederationOK {
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version = federationTest.Version.Name + " " + federationTest.Version.Version
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return version, nil
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} else if federationTest.DNSResult.SRVError != nil && federationTest.WellKnownResult.Result != "" {
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return "", fmt.Errorf("%s OR %s", federationTest.DNSResult.SRVError.Message, federationTest.WellKnownResult.Result)
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} else if len(federationTest.ConnectionErrors) > 0 {
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var msg strings.Builder
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for srv, cerr := range federationTest.ConnectionErrors {
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if msg.Len() > 0 {
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msg.WriteString("; ")
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}
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msg.WriteString(srv)
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msg.WriteString(": ")
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msg.WriteString(cerr.Message)
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}
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return "", fmt.Errorf("Connection errors: %s", msg.String())
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} else if federationTest.WellKnownResult.Server != strings.TrimSuffix(domain, ".") {
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return "", fmt.Errorf("Bad homeserver_name: got %s, expected %s.", federationTest.WellKnownResult.Server, strings.TrimSuffix(domain, "."))
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} else {
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return "", fmt.Errorf("An unimplemented error occurs. Please report to nemunaire. But know that federation seems to be broken. Check https://federationtester.matrix.org/#%s", strings.TrimSuffix(domain, "."))
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}
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}
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type matrix_wk_client struct {
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Homeserver struct {
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BaseURL string `json:"base_url"`
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} `json:"m.homeserver"`
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IdentityServer struct {
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BaseURL string `json:"base_url"`
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} `json:"m.identity_server"`
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}
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type matrix_client_versions struct {
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Versions []string `json:"versions"`
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UnstableFeatures map[string]bool `json:"unstable_features"`
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}
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func check_matrix_client(domain string) (version string, err error) {
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var resp *http.Response
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resp, err = http.Get(fmt.Sprintf("https://%s/.well-known/matrix/client", strings.TrimSuffix(domain, ".")))
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if err != nil {
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return
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}
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defer resp.Body.Close()
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var HomeserverBase = fmt.Sprintf("https://%s", strings.TrimSuffix(domain, "."))
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if resp.StatusCode < 300 {
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var wellknown matrix_wk_client
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if err = json.NewDecoder(resp.Body).Decode(&wellknown); err != nil {
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log.Printf("Error in check_matrix_client, when decoding json: %s", err.Error())
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return "", fmt.Errorf("File at https://%s/.well-known/matrix/client is invalid: JSON parse error", strings.TrimSuffix(domain, "."))
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} else if wellknown.Homeserver.BaseURL != "" {
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if baseurl, err := url.Parse(wellknown.Homeserver.BaseURL); err != nil {
|
||||
return "", fmt.Errorf("File at https://%s/.well-known/matrix/client is invalid: Bad homeserver URL: %s", strings.TrimSuffix(domain, "."), err.Error())
|
||||
} else if !strings.HasSuffix(strings.TrimSuffix(baseurl.Host, "."), strings.TrimSuffix(domain, ".")) {
|
||||
return "", fmt.Errorf("Your homeserver base_url is not under %s", strings.TrimSuffix(domain, "."))
|
||||
} else if strings.TrimSuffix(baseurl.Host, ".") == strings.TrimSuffix(domain, ".") {
|
||||
// This test can be optional
|
||||
return "", fmt.Errorf("Your homeserver should be on its own subdomain")
|
||||
} else {
|
||||
HomeserverBase = wellknown.Homeserver.BaseURL
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var resp2 *http.Response
|
||||
resp2, err = http.Get(fmt.Sprintf("%s/_matrix/client/versions", HomeserverBase))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer resp2.Body.Close()
|
||||
|
||||
if resp2.StatusCode != http.StatusOK {
|
||||
return "", fmt.Errorf("Unable to fetch your homeserver versions at %s/_matrix/client/versions: %s", HomeserverBase, resp2.Status)
|
||||
}
|
||||
|
||||
var clientTest matrix_client_versions
|
||||
if err = json.NewDecoder(resp2.Body).Decode(&clientTest); err != nil {
|
||||
log.Printf("Error in check_matrix_client, when decoding versions json: %s", err.Error())
|
||||
return "", fmt.Errorf("File at %s/_matrix/client/versions is invalid: JSON parse error: %s", HomeserverBase, err.Error())
|
||||
} else if len(clientTest.Versions) == 0 {
|
||||
return "", fmt.Errorf("File at %s/_matrix/client/versions is invalid: no protocol version supported", HomeserverBase)
|
||||
} else {
|
||||
return clientTest.Versions[len(clientTest.Versions)-1], nil
|
||||
}
|
||||
}
|
||||
|
||||
// Main
|
||||
|
||||
func minTunnelVersion(std *adlin.Student, suffixip int) (int, error) {
|
||||
|
||||
@ -1,5 +1,23 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/go-ping/ping"
|
||||
"github.com/miekg/dns"
|
||||
|
||||
"git.nemunai.re/srs/adlin/libadlin"
|
||||
)
|
||||
|
||||
type AdlinTest int
|
||||
|
||||
const (
|
||||
@ -54,3 +72,512 @@ var CheckMap = map[int]map[AdlinTest]int{
|
||||
GuestNet: 214,
|
||||
},
|
||||
}
|
||||
|
||||
// ICMP
|
||||
|
||||
func check_ping(ip string, cb func(pkt *ping.Packet)) (err error) {
|
||||
var pinger *ping.Pinger
|
||||
pinger, err = ping.NewPinger(ip)
|
||||
if err != nil {
|
||||
if verbose {
|
||||
log.Printf("check_ping: %s: %s", ip, err.Error())
|
||||
}
|
||||
return
|
||||
}
|
||||
defer pinger.Stop()
|
||||
|
||||
pinger.Timeout = time.Second * 5
|
||||
pinger.Count = 1
|
||||
pinger.OnRecv = cb
|
||||
pinger.SetPrivileged(true)
|
||||
err = pinger.Run()
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// PORT 53
|
||||
|
||||
func get_GLUE(student *adlin.Student) (aaaa net.IP, err error) {
|
||||
client := dns.Client{Net: "tcp", Timeout: time.Second * 5}
|
||||
domain := student.MyDelegatedDomain()
|
||||
|
||||
dnssrv := "[2a01:e0a:2b:2250::b]:53"
|
||||
if strings.HasSuffix(domain, student.MyDelegatedDomainSuffix()) {
|
||||
dnssrv = "[2a01:e0a:2b:2250::b]:53"
|
||||
} else if v, ok := domainsHostingMap[domain]; ok {
|
||||
dnssrv = v
|
||||
} else {
|
||||
// Looking for root NS
|
||||
m := new(dns.Msg)
|
||||
m.SetQuestion(".", dns.TypeNS)
|
||||
m.RecursionDesired = false
|
||||
m.SetEdns0(4096, true)
|
||||
|
||||
var r *dns.Msg
|
||||
r, _, err = client.Exchange(m, dnssrv)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
return nil, errors.New("response is nil during initial recursion")
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
return nil, errors.New("failed to get a valid answer during initial recursion")
|
||||
}
|
||||
|
||||
for _, answer := range r.Answer {
|
||||
if t, ok := answer.(*dns.NS); ok {
|
||||
dnssrv = t.Ns + ":53"
|
||||
}
|
||||
}
|
||||
// Do casual recursion
|
||||
i := 0
|
||||
recursion:
|
||||
for i = 0; i < 10; i++ {
|
||||
m := new(dns.Msg)
|
||||
m.SetQuestion(domain, dns.TypeNS)
|
||||
m.RecursionDesired = false
|
||||
m.SetEdns0(4096, true)
|
||||
|
||||
var r *dns.Msg
|
||||
r, _, err = client.Exchange(m, dnssrv)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
return nil, errors.New("response is nil during recursion")
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
return nil, errors.New("failed to get a valid answer during recursion")
|
||||
}
|
||||
|
||||
for _, answer := range r.Ns {
|
||||
if t, ok := answer.(*dns.NS); ok {
|
||||
dnssrv = t.Ns + ":53"
|
||||
if t.Header().Name == domain {
|
||||
break recursion
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if i >= 10 {
|
||||
return nil, fmt.Errorf("too much name recursions")
|
||||
} else {
|
||||
domainsHostingMap[domain] = dnssrv
|
||||
}
|
||||
}
|
||||
|
||||
m := new(dns.Msg)
|
||||
m.SetQuestion(domain, dns.TypeNS)
|
||||
m.RecursionDesired = false
|
||||
m.SetEdns0(4096, true)
|
||||
|
||||
var r *dns.Msg
|
||||
r, _, err = client.Exchange(m, dnssrv)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
return nil, errors.New("response is nil")
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
return nil, errors.New("failed to get a valid answer")
|
||||
}
|
||||
|
||||
for _, extra := range r.Extra {
|
||||
if t, ok := extra.(*dns.AAAA); ok {
|
||||
aaaa = t.AAAA
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func check_dns(domain, ip string) (aaaa net.IP, err error) {
|
||||
client := dns.Client{Timeout: time.Second * 5}
|
||||
|
||||
m := new(dns.Msg)
|
||||
m.SetQuestion(domain, dns.TypeAAAA)
|
||||
|
||||
var r *dns.Msg
|
||||
r, _, err = client.Exchange(m, fmt.Sprintf("[%s]:53", ip))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
err = errors.New("response is nil")
|
||||
return
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
err = errors.New("failed to get a valid answer")
|
||||
return
|
||||
}
|
||||
|
||||
for _, answer := range r.Answer {
|
||||
if t, ok := answer.(*dns.AAAA); ok {
|
||||
aaaa = t.AAAA
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func check_dnssec(domain, ip string) (err error) {
|
||||
client := dns.Client{Net: "tcp", Timeout: time.Second * 10}
|
||||
|
||||
// Get DNSKEY
|
||||
m := new(dns.Msg)
|
||||
m.SetEdns0(4096, true)
|
||||
m.SetQuestion(domain, dns.TypeDNSKEY)
|
||||
|
||||
var r *dns.Msg
|
||||
r, _, err = client.Exchange(m, fmt.Sprintf("[%s]:53", ip))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
return errors.New("response is nil")
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
return errors.New("failed to get a valid answer when getting DNSKEY")
|
||||
}
|
||||
|
||||
var rrs []dns.RR
|
||||
var dnskeys []*dns.DNSKEY
|
||||
var dnskeysig *dns.RRSIG
|
||||
for _, answer := range r.Answer {
|
||||
if t, ok := answer.(*dns.DNSKEY); ok {
|
||||
dnskeys = append(dnskeys, t)
|
||||
rrs = append(rrs, dns.RR(t))
|
||||
} else if t, ok := answer.(*dns.RRSIG); ok {
|
||||
dnskeysig = t
|
||||
}
|
||||
}
|
||||
|
||||
if dnskeysig == nil {
|
||||
return fmt.Errorf("Unable to verify DNSKEY record signature: No RRSIG found for DNSKEY record.")
|
||||
}
|
||||
|
||||
found := false
|
||||
for _, dnskey := range dnskeys {
|
||||
if err = dnskeysig.Verify(dnskey, rrs); err == nil {
|
||||
found = true
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
return fmt.Errorf("Unable to verify DNSKEY record signature: %w", err)
|
||||
}
|
||||
|
||||
// Check AAAA validity
|
||||
m = new(dns.Msg)
|
||||
m.SetEdns0(4096, true)
|
||||
m.SetQuestion(domain, dns.TypeAAAA)
|
||||
|
||||
r, _, err = client.Exchange(m, fmt.Sprintf("[%s]:53", ip))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
return errors.New("response is nil")
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
return errors.New("failed to get a valid answer when getting AAAA records")
|
||||
}
|
||||
|
||||
rrs = []dns.RR{}
|
||||
var aaaas []*dns.AAAA
|
||||
var aaaasig *dns.RRSIG
|
||||
for _, answer := range r.Answer {
|
||||
if t, ok := answer.(*dns.AAAA); ok {
|
||||
aaaas = append(aaaas, t)
|
||||
rrs = append(rrs, t)
|
||||
} else if t, ok := answer.(*dns.RRSIG); ok {
|
||||
aaaasig = t
|
||||
}
|
||||
}
|
||||
|
||||
if len(aaaas) == 0 {
|
||||
return errors.New("Something odd happen: no AAAA record found.")
|
||||
}
|
||||
|
||||
if aaaasig == nil {
|
||||
return fmt.Errorf("Unable to verify AAAA record signature: No RRSIG found for AAAA record.")
|
||||
}
|
||||
|
||||
found = false
|
||||
for _, dnskey := range dnskeys {
|
||||
if err = aaaasig.Verify(dnskey, rrs); err == nil {
|
||||
found = true
|
||||
|
||||
if !aaaasig.ValidityPeriod(time.Now()) {
|
||||
utc := time.Now().UTC().Unix()
|
||||
|
||||
modi := (int64(aaaasig.Inception) - utc) / year68
|
||||
ti := int64(aaaasig.Inception) + modi*year68
|
||||
|
||||
mode := (int64(aaaasig.Expiration) - utc) / year68
|
||||
te := int64(aaaasig.Expiration) + mode*year68
|
||||
|
||||
if ti > utc {
|
||||
return fmt.Errorf("Unable to verify AAAA record signature: signature not yet valid")
|
||||
} else if utc > te {
|
||||
return fmt.Errorf("Unable to verify AAAA record signature: signature expired")
|
||||
} else {
|
||||
return fmt.Errorf("Unable to verify AAAA record signature: signature expired or not yet valid")
|
||||
}
|
||||
}
|
||||
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
return fmt.Errorf("Unable to verify AAAA record signature: %w", err)
|
||||
}
|
||||
|
||||
// Check DS
|
||||
m = new(dns.Msg)
|
||||
m.SetQuestion(domain, dns.TypeDS)
|
||||
m.RecursionDesired = false
|
||||
m.SetEdns0(4096, true)
|
||||
|
||||
r, _, err = client.Exchange(m, "[2a01:e0a:2b:2250::b]:53")
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
return errors.New("response is nil")
|
||||
}
|
||||
if r.Rcode != dns.RcodeSuccess {
|
||||
return errors.New("failed to get a valid answer when getting DS records in parent server")
|
||||
}
|
||||
|
||||
found = false
|
||||
for _, answer := range r.Answer {
|
||||
if t, ok := answer.(*dns.DS); ok {
|
||||
for _, dnskey := range dnskeys {
|
||||
expectedDS := dnskey.ToDS(dns.SHA256)
|
||||
if expectedDS.KeyTag == t.KeyTag && expectedDS.Algorithm == t.Algorithm && expectedDS.DigestType == t.DigestType && expectedDS.Digest == t.Digest {
|
||||
found = true
|
||||
err = nil
|
||||
break
|
||||
} else {
|
||||
err = fmt.Errorf("DS record found in parent zone differs from DNSKEY %v vs. %v.", expectedDS, t)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
if err == nil {
|
||||
return fmt.Errorf("Unable to find a valid DS record in parent zone (if you use your own domain (ie. not given by maatma), this can be due to a previously cached response, you should wait).")
|
||||
} else {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// PORT 80
|
||||
|
||||
func check_http(ip, dn string) (err error) {
|
||||
client := &http.Client{
|
||||
CheckRedirect: func(req *http.Request, via []*http.Request) error {
|
||||
return http.ErrUseLastResponse
|
||||
},
|
||||
}
|
||||
|
||||
req, errr := http.NewRequest("GET", fmt.Sprintf("http://[%s]/", ip), nil)
|
||||
if errr != nil {
|
||||
return errr
|
||||
}
|
||||
|
||||
if dn != "" {
|
||||
req.Header.Add("Host", strings.TrimSuffix(dn, "."))
|
||||
}
|
||||
|
||||
var resp *http.Response
|
||||
resp, err = client.Do(req)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if dn != "" && resp.StatusCode >= 400 {
|
||||
return fmt.Errorf("Bad status, got: %d (%s)", resp.StatusCode, resp.Status)
|
||||
}
|
||||
|
||||
_, err = ioutil.ReadAll(resp.Body)
|
||||
return
|
||||
}
|
||||
|
||||
// PORT 443
|
||||
|
||||
func check_https(domain, ip string) (err error) {
|
||||
var resp *http.Response
|
||||
resp, err = http.Get(fmt.Sprintf("https://%s/", strings.TrimSuffix(domain, ".")))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode >= 300 && resp.StatusCode < 400 {
|
||||
loc := resp.Header.Get("Location")
|
||||
if loc != "" && strings.HasSuffix(dns.Fqdn(loc), domain) {
|
||||
if dns.Fqdn(loc) == domain {
|
||||
return fmt.Errorf("Redirection loop %s redirect to %s", domain, loc)
|
||||
} else if err = check_https(dns.Fqdn(loc), ip); err != nil {
|
||||
return fmt.Errorf("Error after following redirection to %s: %w", loc, err)
|
||||
} else {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if resp.StatusCode >= 300 {
|
||||
return fmt.Errorf("Bad status, got: %d (%s)", resp.StatusCode, resp.Status)
|
||||
}
|
||||
|
||||
_, err = ioutil.ReadAll(resp.Body)
|
||||
return
|
||||
}
|
||||
|
||||
// MATRIX
|
||||
|
||||
type matrix_result struct {
|
||||
WellKnownResult struct {
|
||||
Server string `json:"m.server"`
|
||||
Result string `json:"result"`
|
||||
}
|
||||
DNSResult struct {
|
||||
SRVError *struct {
|
||||
Message string
|
||||
}
|
||||
}
|
||||
ConnectionReports map[string]struct {
|
||||
Errors []string
|
||||
}
|
||||
ConnectionErrors map[string]struct {
|
||||
Message string
|
||||
}
|
||||
Version struct {
|
||||
Name string `json:"name"`
|
||||
Version string `json:"version"`
|
||||
}
|
||||
FederationOK bool `json:"FederationOK"`
|
||||
}
|
||||
|
||||
func check_matrix_federation(domain string) (version string, err error) {
|
||||
var resp *http.Response
|
||||
resp, err = http.Get(fmt.Sprintf("https://federation-tester.adlin.nemunai.re/api/report?server_name=%s", strings.TrimSuffix(domain, ".")))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode >= 300 {
|
||||
return "", fmt.Errorf("Sorry, the federation tester is broken. Check on https://federationtester.matrix.org/#%s", strings.TrimSuffix(domain, "."))
|
||||
}
|
||||
|
||||
var federationTest matrix_result
|
||||
if err = json.NewDecoder(resp.Body).Decode(&federationTest); err != nil {
|
||||
log.Printf("Error in check_matrix_federation, when decoding json: %s", err.Error())
|
||||
return "", fmt.Errorf("Sorry, the federation tester is broken. Check on https://federationtester.matrix.org/#%s", strings.TrimSuffix(domain, "."))
|
||||
} else if federationTest.FederationOK {
|
||||
version = federationTest.Version.Name + " " + federationTest.Version.Version
|
||||
return version, nil
|
||||
} else if federationTest.DNSResult.SRVError != nil && federationTest.WellKnownResult.Result != "" {
|
||||
return "", fmt.Errorf("%s OR %s", federationTest.DNSResult.SRVError.Message, federationTest.WellKnownResult.Result)
|
||||
} else if len(federationTest.ConnectionErrors) > 0 {
|
||||
var msg strings.Builder
|
||||
for srv, cerr := range federationTest.ConnectionErrors {
|
||||
if msg.Len() > 0 {
|
||||
msg.WriteString("; ")
|
||||
}
|
||||
msg.WriteString(srv)
|
||||
msg.WriteString(": ")
|
||||
msg.WriteString(cerr.Message)
|
||||
}
|
||||
return "", fmt.Errorf("Connection errors: %s", msg.String())
|
||||
} else if federationTest.WellKnownResult.Server != strings.TrimSuffix(domain, ".") {
|
||||
return "", fmt.Errorf("Bad homeserver_name: got %s, expected %s.", federationTest.WellKnownResult.Server, strings.TrimSuffix(domain, "."))
|
||||
} else {
|
||||
return "", fmt.Errorf("An unimplemented error occurs. Please report to nemunaire. But know that federation seems to be broken. Check https://federationtester.matrix.org/#%s", strings.TrimSuffix(domain, "."))
|
||||
}
|
||||
}
|
||||
|
||||
type matrix_wk_client struct {
|
||||
Homeserver struct {
|
||||
BaseURL string `json:"base_url"`
|
||||
} `json:"m.homeserver"`
|
||||
IdentityServer struct {
|
||||
BaseURL string `json:"base_url"`
|
||||
} `json:"m.identity_server"`
|
||||
}
|
||||
|
||||
type matrix_client_versions struct {
|
||||
Versions []string `json:"versions"`
|
||||
UnstableFeatures map[string]bool `json:"unstable_features"`
|
||||
}
|
||||
|
||||
func check_matrix_client(domain string) (version string, err error) {
|
||||
var resp *http.Response
|
||||
resp, err = http.Get(fmt.Sprintf("https://%s/.well-known/matrix/client", strings.TrimSuffix(domain, ".")))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var HomeserverBase = fmt.Sprintf("https://%s", strings.TrimSuffix(domain, "."))
|
||||
|
||||
if resp.StatusCode < 300 {
|
||||
var wellknown matrix_wk_client
|
||||
if err = json.NewDecoder(resp.Body).Decode(&wellknown); err != nil {
|
||||
log.Printf("Error in check_matrix_client, when decoding json: %s", err.Error())
|
||||
return "", fmt.Errorf("File at https://%s/.well-known/matrix/client is invalid: JSON parse error", strings.TrimSuffix(domain, "."))
|
||||
} else if wellknown.Homeserver.BaseURL != "" {
|
||||
if baseurl, err := url.Parse(wellknown.Homeserver.BaseURL); err != nil {
|
||||
return "", fmt.Errorf("File at https://%s/.well-known/matrix/client is invalid: Bad homeserver URL: %s", strings.TrimSuffix(domain, "."), err.Error())
|
||||
} else if !strings.HasSuffix(strings.TrimSuffix(baseurl.Host, "."), strings.TrimSuffix(domain, ".")) {
|
||||
return "", fmt.Errorf("Your homeserver base_url is not under %s", strings.TrimSuffix(domain, "."))
|
||||
} else if strings.TrimSuffix(baseurl.Host, ".") == strings.TrimSuffix(domain, ".") {
|
||||
// This test can be optional
|
||||
return "", fmt.Errorf("Your homeserver should be on its own subdomain")
|
||||
} else {
|
||||
HomeserverBase = wellknown.Homeserver.BaseURL
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var resp2 *http.Response
|
||||
resp2, err = http.Get(fmt.Sprintf("%s/_matrix/client/versions", HomeserverBase))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer resp2.Body.Close()
|
||||
|
||||
if resp2.StatusCode != http.StatusOK {
|
||||
return "", fmt.Errorf("Unable to fetch your homeserver versions at %s/_matrix/client/versions: %s", HomeserverBase, resp2.Status)
|
||||
}
|
||||
|
||||
var clientTest matrix_client_versions
|
||||
if err = json.NewDecoder(resp2.Body).Decode(&clientTest); err != nil {
|
||||
log.Printf("Error in check_matrix_client, when decoding versions json: %s", err.Error())
|
||||
return "", fmt.Errorf("File at %s/_matrix/client/versions is invalid: JSON parse error: %s", HomeserverBase, err.Error())
|
||||
} else if len(clientTest.Versions) == 0 {
|
||||
return "", fmt.Errorf("File at %s/_matrix/client/versions is invalid: no protocol version supported", HomeserverBase)
|
||||
} else {
|
||||
return clientTest.Versions[len(clientTest.Versions)-1], nil
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user