Pull request: 4074 fix upstream test
Merge in DNS/adguard-home from 4074-upstream-test to master Updates #4074. Squashed commit of the following: commit 0de155b1e175a892b259791ff6d6e6f351bcfcf2 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jan 12 19:20:01 2022 +0500 dnsforward: fix upstream test
This commit is contained in:
Eugene Burkov
parent
1458600c37
commit
0e4ffd339f
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@ -29,6 +29,7 @@ TODO(a.garipov): Remove this deprecation, if v0.108.0 is released before the Go
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### Fixed
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- Poor testing of domain-specific upstream servers ([#4074]).
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- Omitted aliases of hosts specified by another line within the OS's hosts file
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([#4079]).
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@ -37,6 +38,8 @@ TODO(a.garipov): Remove this deprecation, if v0.108.0 is released before the Go
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- Go 1.16 support.
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[#3057]: https://github.com/AdguardTeam/AdGuardHome/issues/3057
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[#4074]: https://github.com/AdguardTeam/AdGuardHome/issues/4074
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[#4079]: https://github.com/AdguardTeam/AdGuardHome/issues/4079
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@ -82,7 +85,6 @@ TODO(a.garipov): Remove this deprecation, if v0.108.0 is released before the Go
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[#4008]: https://github.com/AdguardTeam/AdGuardHome/issues/4008
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[#4016]: https://github.com/AdguardTeam/AdGuardHome/issues/4016
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[#4027]: https://github.com/AdguardTeam/AdGuardHome/issues/4027
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[#4079]: https://github.com/AdguardTeam/AdGuardHome/issues/4079
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@ -5,7 +5,6 @@ import (
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"fmt"
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"net"
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"net/http"
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"strconv"
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"strings"
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"time"
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@ -192,22 +191,23 @@ func (req *dnsConfig) checkCacheTTL() bool {
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func (s *Server) handleSetConfig(w http.ResponseWriter, r *http.Request) {
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req := dnsConfig{}
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dec := json.NewDecoder(r.Body)
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if err := dec.Decode(&req); err != nil {
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err := json.NewDecoder(r.Body).Decode(&req)
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if err != nil {
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aghhttp.Error(r, w, http.StatusBadRequest, "json Encode: %s", err)
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return
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}
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if req.Upstreams != nil {
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if err := ValidateUpstreams(*req.Upstreams); err != nil {
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if err = ValidateUpstreams(*req.Upstreams); err != nil {
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aghhttp.Error(r, w, http.StatusBadRequest, "wrong upstreams specification: %s", err)
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return
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}
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}
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if errBoot, err := req.checkBootstrap(); err != nil {
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var errBoot string
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if errBoot, err = req.checkBootstrap(); err != nil {
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aghhttp.Error(
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r,
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w,
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@ -220,19 +220,16 @@ func (s *Server) handleSetConfig(w http.ResponseWriter, r *http.Request) {
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return
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}
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if !req.checkBlockingMode() {
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switch {
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case !req.checkBlockingMode():
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aghhttp.Error(r, w, http.StatusBadRequest, "blocking_mode: incorrect value")
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return
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}
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if !req.checkUpstreamsMode() {
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case !req.checkUpstreamsMode():
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aghhttp.Error(r, w, http.StatusBadRequest, "upstream_mode: incorrect value")
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return
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}
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if !req.checkCacheTTL() {
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case !req.checkCacheTTL():
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aghhttp.Error(
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r,
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w,
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@ -241,13 +238,15 @@ func (s *Server) handleSetConfig(w http.ResponseWriter, r *http.Request) {
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)
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return
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default:
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// Go on.
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}
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restart := s.setConfig(req)
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s.conf.ConfigModified()
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if restart {
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if err := s.Reconfigure(nil); err != nil {
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if err = s.Reconfigure(nil); err != nil {
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aghhttp.Error(r, w, http.StatusInternalServerError, "%s", err)
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}
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}
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@ -387,14 +386,14 @@ func ValidateUpstreams(upstreams []string) (err error) {
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var defaultUpstreamFound bool
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for _, u := range upstreams {
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var ok bool
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ok, err = validateUpstream(u)
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var useDefault bool
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useDefault, err = validateUpstream(u)
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if err != nil {
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return err
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}
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if !defaultUpstreamFound {
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defaultUpstreamFound = ok
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defaultUpstreamFound = useDefault
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}
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}
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@ -407,50 +406,62 @@ func ValidateUpstreams(upstreams []string) (err error) {
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var protocols = []string{"tls://", "https://", "tcp://", "sdns://", "quic://"}
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func validateUpstream(u string) (bool, error) {
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func validateUpstream(u string) (useDefault bool, err error) {
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// Check if the user tries to specify upstream for domain.
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u, useDefault, err := separateUpstream(u)
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var isDomainSpec bool
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u, isDomainSpec, err = separateUpstream(u)
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if err != nil {
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return useDefault, err
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return !isDomainSpec, err
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}
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// The special server address '#' means "use the default servers"
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if u == "#" && !useDefault {
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// The special server address '#' means that default server must be used.
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if useDefault = !isDomainSpec; u == "#" && isDomainSpec {
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return useDefault, nil
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}
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// Check if the upstream has a valid protocol prefix
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// Check if the upstream has a valid protocol prefix.
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//
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// TODO(e.burkov): Validate the domain name.
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for _, proto := range protocols {
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if strings.HasPrefix(u, proto) {
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return useDefault, nil
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}
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}
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// Return error if the upstream contains '://' without any valid protocol
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if strings.Contains(u, "://") {
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return useDefault, fmt.Errorf("wrong protocol")
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return useDefault, errors.Error("wrong protocol")
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}
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// Check if upstream is valid plain DNS
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return useDefault, checkPlainDNS(u)
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// Check if upstream is either an IP or IP with port.
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if net.ParseIP(u) != nil {
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return useDefault, nil
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} else if _, err = netutil.ParseIPPort(u); err != nil {
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return useDefault, err
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}
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return useDefault, nil
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}
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// separateUpstream returns the upstream without the specified domains.
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// useDefault is true when a default upstream must be used.
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func separateUpstream(upstreamStr string) (upstream string, useDefault bool, err error) {
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defer func() { err = errors.Annotate(err, "bad upstream for domain spec %q: %w", upstreamStr) }()
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// isDomainSpec is true when the upstream is domains-specific.
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func separateUpstream(upstreamStr string) (upstream string, isDomainSpec bool, err error) {
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if !strings.HasPrefix(upstreamStr, "[/") {
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return upstreamStr, true, nil
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return upstreamStr, false, nil
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}
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defer func() { err = errors.Annotate(err, "bad upstream for domain %q: %w", upstreamStr) }()
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parts := strings.Split(upstreamStr[2:], "/]")
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if len(parts) != 2 {
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return "", false, errors.Error("duplicated separator")
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switch len(parts) {
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case 2:
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// Go on.
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case 1:
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return "", false, errors.Error("missing separator")
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default:
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return "", true, errors.Error("duplicated separator")
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}
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domains := parts[0]
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upstream = parts[1]
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var domains string
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domains, upstream = parts[0], parts[1]
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for i, host := range strings.Split(domains, "/") {
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if host == "" {
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continue
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@ -458,36 +469,11 @@ func separateUpstream(upstreamStr string) (upstream string, useDefault bool, err
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err = netutil.ValidateDomainName(host)
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if err != nil {
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return "", false, fmt.Errorf("domain at index %d: %w", i, err)
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return "", true, fmt.Errorf("domain at index %d: %w", i, err)
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}
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}
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return upstream, false, nil
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}
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// checkPlainDNS checks if host is plain DNS
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func checkPlainDNS(upstream string) error {
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// Check if host is ip without port
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if net.ParseIP(upstream) != nil {
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return nil
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}
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// Check if host is ip with port
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ip, port, err := net.SplitHostPort(upstream)
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if err != nil {
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return err
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}
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if net.ParseIP(ip) == nil {
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return fmt.Errorf("%s is not a valid IP", ip)
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}
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_, err = strconv.ParseInt(port, 0, 64)
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if err != nil {
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return fmt.Errorf("%s is not a valid port: %w", port, err)
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}
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return nil
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return upstream, true, nil
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}
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// excFunc is a signature of function to check if upstream exchanges correctly.
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@ -515,13 +501,9 @@ func checkDNSUpstreamExc(u upstream.Upstream) (err error) {
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if len(reply.Answer) != 1 {
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return fmt.Errorf("wrong response")
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}
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if t, ok := reply.Answer[0].(*dns.A); ok {
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if !net.IPv4(8, 8, 8, 8).Equal(t.A) {
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} else if a, ok := reply.Answer[0].(*dns.A); !ok || !a.A.Equal(net.IP{8, 8, 8, 8}) {
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return fmt.Errorf("wrong response")
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}
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}
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return nil
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}
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@ -555,7 +537,7 @@ func checkDNS(input string, bootstrap []string, timeout time.Duration, ef excFun
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// Separate upstream from domains list.
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var useDefault bool
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if input, useDefault, err = separateUpstream(input); err != nil {
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if useDefault, err = validateUpstream(input); err != nil {
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return fmt.Errorf("wrong upstream format: %w", err)
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}
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@ -564,7 +546,7 @@ func checkDNS(input string, bootstrap []string, timeout time.Duration, ef excFun
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return nil
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}
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if _, err = validateUpstream(input); err != nil {
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if input, _, err = separateUpstream(input); err != nil {
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return fmt.Errorf("wrong upstream format: %w", err)
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}
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@ -572,7 +554,8 @@ func checkDNS(input string, bootstrap []string, timeout time.Duration, ef excFun
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bootstrap = defaultBootstrap
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}
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log.Debug("checking if dns server %q works...", input)
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log.Debug("checking if upstream %s works", input)
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var u upstream.Upstream
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u, err = upstream.AddressToUpstream(input, &upstream.Options{
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Bootstrap: bootstrap,
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@ -586,7 +569,7 @@ func checkDNS(input string, bootstrap []string, timeout time.Duration, ef excFun
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return fmt.Errorf("upstream %q fails to exchange: %w", input, err)
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}
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log.Debug("dns %s works OK", input)
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log.Debug("upstream %s is ok", input)
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return nil
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}
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@ -620,9 +603,9 @@ func (s *Server) handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
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err = checkDNS(host, bootstraps, timeout, checkPrivateUpstreamExc)
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if err != nil {
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log.Info("%v", err)
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// TODO(e.burkov): If passed upstream have already
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// written an error above, we rewriting the error for
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// it. These cases should be handled properly instead.
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// TODO(e.burkov): If passed upstream have already written an error
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// above, we rewriting the error for it. These cases should be
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// handled properly instead.
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result[host] = err.Error()
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continue
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@ -184,7 +184,7 @@ func TestDNSForwardHTTP_handleSetConfig(t *testing.T) {
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wantSet: "",
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}, {
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name: "upstream_dns_bad",
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wantSet: `wrong upstreams specification: address !!!: ` +
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wantSet: `wrong upstreams specification: bad ipport address "!!!": address !!!: ` +
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`missing port in address`,
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}, {
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name: "bootstraps_bad",
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@ -235,107 +235,117 @@ func TestDNSForwardHTTP_handleSetConfig(t *testing.T) {
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}
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func TestIsCommentOrEmpty(t *testing.T) {
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assert.True(t, IsCommentOrEmpty(""))
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assert.True(t, IsCommentOrEmpty("# comment"))
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assert.False(t, IsCommentOrEmpty("1.2.3.4"))
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for _, tc := range []struct {
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want assert.BoolAssertionFunc
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str string
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}{{
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want: assert.True,
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str: "",
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}, {
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want: assert.True,
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str: "# comment",
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}, {
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want: assert.False,
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str: "1.2.3.4",
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}} {
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tc.want(t, IsCommentOrEmpty(tc.str))
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}
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}
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// TODO(a.garipov): Rewrite to check the actual error messages.
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func TestValidateUpstream(t *testing.T) {
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testCases := []struct {
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wantDef assert.BoolAssertionFunc
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name string
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upstream string
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valid bool
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wantDef bool
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wantErr string
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}{{
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wantDef: assert.True,
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name: "invalid",
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upstream: "1.2.3.4.5",
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valid: false,
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wantDef: false,
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wantErr: `bad ipport address "1.2.3.4.5": address 1.2.3.4.5: missing port in address`,
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}, {
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wantDef: assert.True,
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name: "invalid",
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upstream: "123.3.7m",
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valid: false,
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wantDef: false,
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wantErr: `bad ipport address "123.3.7m": address 123.3.7m: missing port in address`,
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}, {
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wantDef: assert.True,
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name: "invalid",
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upstream: "htttps://google.com/dns-query",
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valid: false,
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wantDef: false,
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wantErr: `wrong protocol`,
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}, {
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wantDef: assert.True,
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name: "invalid",
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upstream: "[/host.com]tls://dns.adguard.com",
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valid: false,
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wantDef: false,
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wantErr: `bad upstream for domain "[/host.com]tls://dns.adguard.com": missing separator`,
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}, {
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wantDef: assert.True,
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name: "invalid",
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upstream: "[host.ru]#",
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valid: false,
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wantDef: false,
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wantErr: `bad ipport address "[host.ru]#": address [host.ru]#: missing port in address`,
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}, {
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wantDef: assert.True,
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name: "valid_default",
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upstream: "1.1.1.1",
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valid: true,
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wantDef: true,
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wantErr: ``,
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}, {
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wantDef: assert.True,
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name: "valid_default",
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upstream: "tls://1.1.1.1",
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valid: true,
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wantDef: true,
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wantErr: ``,
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}, {
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wantDef: assert.True,
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name: "valid_default",
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upstream: "https://dns.adguard.com/dns-query",
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valid: true,
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wantDef: true,
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wantErr: ``,
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}, {
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wantDef: assert.True,
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name: "valid_default",
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upstream: "sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
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valid: true,
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wantDef: true,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "valid",
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upstream: "[/host.com/]1.1.1.1",
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valid: true,
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wantDef: false,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "valid",
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upstream: "[//]tls://1.1.1.1",
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valid: true,
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wantDef: false,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "valid",
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upstream: "[/www.host.com/]#",
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valid: true,
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wantDef: false,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "valid",
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upstream: "[/host.com/google.com/]8.8.8.8",
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valid: true,
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wantDef: false,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "valid",
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upstream: "[/host/]sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
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valid: true,
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wantDef: false,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "idna",
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upstream: "[/пример.рф/]8.8.8.8",
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valid: true,
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wantDef: false,
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wantErr: ``,
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}, {
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wantDef: assert.False,
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name: "bad_domain",
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upstream: "[/!/]8.8.8.8",
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valid: false,
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wantDef: false,
|
||||
wantErr: `bad upstream for domain "[/!/]8.8.8.8": domain at index 0: ` +
|
||||
`bad domain name "!": bad domain name label "!": bad domain name label rune '!'`,
|
||||
}}
|
||||
|
||||
for _, tc := range testCases {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
defaultUpstream, err := validateUpstream(tc.upstream)
|
||||
require.Equal(t, tc.valid, err == nil)
|
||||
if tc.valid {
|
||||
assert.Equal(t, tc.wantDef, defaultUpstream)
|
||||
}
|
||||
testutil.AssertErrorMsg(t, tc.wantErr, err)
|
||||
tc.wantDef(t, defaultUpstream)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
|
@ -343,22 +353,19 @@ func TestValidateUpstream(t *testing.T) {
|
|||
func TestValidateUpstreamsSet(t *testing.T) {
|
||||
testCases := []struct {
|
||||
name string
|
||||
msg string
|
||||
wantErr string
|
||||
set []string
|
||||
wantNil bool
|
||||
}{{
|
||||
name: "empty",
|
||||
msg: "empty upstreams array should be valid",
|
||||
wantErr: ``,
|
||||
set: nil,
|
||||
wantNil: true,
|
||||
}, {
|
||||
name: "comment",
|
||||
msg: "comments should not be validated",
|
||||
wantErr: ``,
|
||||
set: []string{"# comment"},
|
||||
wantNil: true,
|
||||
}, {
|
||||
name: "valid_no_default",
|
||||
msg: "there is no default upstream",
|
||||
wantErr: `no default upstreams specified`,
|
||||
set: []string{
|
||||
"[/host.com/]1.1.1.1",
|
||||
"[//]tls://1.1.1.1",
|
||||
|
|
@ -366,10 +373,9 @@ func TestValidateUpstreamsSet(t *testing.T) {
|
|||
"[/host.com/google.com/]8.8.8.8",
|
||||
"[/host/]sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
|
||||
},
|
||||
wantNil: false,
|
||||
}, {
|
||||
name: "valid_with_default",
|
||||
msg: "upstreams set is valid, but doesn't pass through validation cause: %s",
|
||||
wantErr: ``,
|
||||
set: []string{
|
||||
"[/host.com/]1.1.1.1",
|
||||
"[//]tls://1.1.1.1",
|
||||
|
|
@ -378,19 +384,16 @@ func TestValidateUpstreamsSet(t *testing.T) {
|
|||
"[/host/]sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
|
||||
"8.8.8.8",
|
||||
},
|
||||
wantNil: true,
|
||||
}, {
|
||||
name: "invalid",
|
||||
msg: "there is an invalid upstream in set, but it pass through validation",
|
||||
wantErr: `cannot prepare the upstream dhcp://fake.dns ([]): unsupported URL scheme: dhcp`,
|
||||
set: []string{"dhcp://fake.dns"},
|
||||
wantNil: false,
|
||||
}}
|
||||
|
||||
for _, tc := range testCases {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
err := ValidateUpstreams(tc.set)
|
||||
|
||||
assert.Equalf(t, tc.wantNil, err == nil, tc.msg, err)
|
||||
testutil.AssertErrorMsg(t, tc.wantErr, err)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -123,7 +123,9 @@
|
|||
'8.8.8.8': 'OK'
|
||||
'8.8.4.4': 'OK'
|
||||
'192.168.1.104:53535': >
|
||||
Couldn't communicate with DNS server
|
||||
upstream "192.168.1.104:1234" fails to exchange: couldn't
|
||||
communicate with upstream: read udp
|
||||
192.168.1.100:60675->8.8.8.8:1234: i/o timeout
|
||||
'/version.json':
|
||||
'post':
|
||||
'tags':
|
||||
|
|
|
|||
Loading…
Reference in New Issue