package agent import ( "bytes" "context" "encoding/json" "fmt" "io" "io/ioutil" "net" "net/http" "net/http/httptest" "os" "path/filepath" "runtime" "strconv" "strings" "testing" "time" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/api" "github.com/hashicorp/consul/testutil" "github.com/hashicorp/go-cleanhttp" "golang.org/x/net/http2" ) func TestHTTPServer_UnixSocket(t *testing.T) { t.Parallel() if runtime.GOOS == "windows" { t.SkipNow() } tempDir := testutil.TempDir(t, "consul") defer os.RemoveAll(tempDir) socket := filepath.Join(tempDir, "test.sock") // Only testing mode, since uid/gid might not be settable // from test environment. a := NewTestAgent(t.Name(), ` addresses { http = "unix://`+socket+`" } unix_sockets { mode = "0777" } `) defer a.Shutdown() // Ensure the socket was created if _, err := os.Stat(socket); err != nil { t.Fatalf("err: %s", err) } // Ensure the mode was set properly fi, err := os.Stat(socket) if err != nil { t.Fatalf("err: %s", err) } if fi.Mode().String() != "Srwxrwxrwx" { t.Fatalf("bad permissions: %s", fi.Mode()) } // Ensure we can get a response from the socket. trans := cleanhttp.DefaultTransport() trans.DialContext = func(_ context.Context, _, _ string) (net.Conn, error) { return net.Dial("unix", socket) } client := &http.Client{ Transport: trans, } // This URL doesn't look like it makes sense, but the scheme (http://) and // the host (127.0.0.1) are required by the HTTP client library. In reality // this will just use the custom dialer and talk to the socket. resp, err := client.Get("http://127.0.0.1/v1/agent/self") if err != nil { t.Fatalf("err: %s", err) } defer resp.Body.Close() if body, err := ioutil.ReadAll(resp.Body); err != nil || len(body) == 0 { t.Fatalf("bad: %s %v", body, err) } } func TestHTTPServer_UnixSocket_FileExists(t *testing.T) { t.Parallel() if runtime.GOOS == "windows" { t.SkipNow() } tempDir := testutil.TempDir(t, "consul") defer os.RemoveAll(tempDir) socket := filepath.Join(tempDir, "test.sock") // Create a regular file at the socket path if err := ioutil.WriteFile(socket, []byte("hello world"), 0644); err != nil { t.Fatalf("err: %s", err) } fi, err := os.Stat(socket) if err != nil { t.Fatalf("err: %s", err) } if !fi.Mode().IsRegular() { t.Fatalf("not a regular file: %s", socket) } a := NewTestAgent(t.Name(), ` addresses { http = "unix://`+socket+`" } `) defer a.Shutdown() // Ensure the file was replaced by the socket fi, err = os.Stat(socket) if err != nil { t.Fatalf("err: %s", err) } if fi.Mode()&os.ModeSocket == 0 { t.Fatalf("expected socket to replace file") } } func TestHTTPServer_H2(t *testing.T) { t.Parallel() // Fire up an agent with TLS enabled. a := &TestAgent{ Name: t.Name(), UseTLS: true, HCL: ` key_file = "../test/client_certs/server.key" cert_file = "../test/client_certs/server.crt" ca_file = "../test/client_certs/rootca.crt" `, } a.Start() defer a.Shutdown() // Make an HTTP/2-enabled client, using the API helpers to set // up TLS to be as normal as possible for Consul. tlscfg := &api.TLSConfig{ Address: "consul.test", KeyFile: "../test/client_certs/client.key", CertFile: "../test/client_certs/client.crt", CAFile: "../test/client_certs/rootca.crt", } tlsccfg, err := api.SetupTLSConfig(tlscfg) if err != nil { t.Fatalf("err: %v", err) } transport := api.DefaultConfig().Transport transport.TLSClientConfig = tlsccfg if err := http2.ConfigureTransport(transport); err != nil { t.Fatalf("err: %v", err) } hc := &http.Client{ Transport: transport, } // Hook a handler that echoes back the protocol. handler := func(resp http.ResponseWriter, req *http.Request) { resp.WriteHeader(http.StatusOK) fmt.Fprint(resp, req.Proto) } w, ok := a.srv.Handler.(*wrappedMux) if !ok { t.Fatalf("handler is not expected type") } w.mux.HandleFunc("/echo", handler) // Call it and make sure we see HTTP/2. url := fmt.Sprintf("https://%s/echo", a.srv.ln.Addr().String()) resp, err := hc.Get(url) if err != nil { t.Fatalf("err: %v", err) } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { t.Fatalf("err: %v", err) } if !bytes.Equal(body, []byte("HTTP/2.0")) { t.Fatalf("bad: %v", body) } // This doesn't have a closed-loop way to verify HTTP/2 support for // some other endpoint, but configure an API client and make a call // just as a sanity check. cfg := &api.Config{ Address: a.srv.ln.Addr().String(), Scheme: "https", HttpClient: hc, } client, err := api.NewClient(cfg) if err != nil { t.Fatalf("err: %v", err) } if _, err := client.Agent().Self(); err != nil { t.Fatalf("err: %v", err) } } func TestSetIndex(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() setIndex(resp, 1000) header := resp.Header().Get("X-Consul-Index") if header != "1000" { t.Fatalf("Bad: %v", header) } setIndex(resp, 2000) if v := resp.Header()["X-Consul-Index"]; len(v) != 1 { t.Fatalf("bad: %#v", v) } } func TestSetKnownLeader(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() setKnownLeader(resp, true) header := resp.Header().Get("X-Consul-KnownLeader") if header != "true" { t.Fatalf("Bad: %v", header) } resp = httptest.NewRecorder() setKnownLeader(resp, false) header = resp.Header().Get("X-Consul-KnownLeader") if header != "false" { t.Fatalf("Bad: %v", header) } } func TestSetLastContact(t *testing.T) { t.Parallel() tests := []struct { desc string d time.Duration h string }{ {"neg", -1, "0"}, {"zero", 0, "0"}, {"pos", 123 * time.Millisecond, "123"}, {"pos ms only", 123456 * time.Microsecond, "123"}, } for _, tt := range tests { t.Run(tt.desc, func(t *testing.T) { resp := httptest.NewRecorder() setLastContact(resp, tt.d) header := resp.Header().Get("X-Consul-LastContact") if got, want := header, tt.h; got != want { t.Fatalf("got X-Consul-LastContact header %q want %q", got, want) } }) } } func TestSetMeta(t *testing.T) { t.Parallel() meta := structs.QueryMeta{ Index: 1000, KnownLeader: true, LastContact: 123456 * time.Microsecond, } resp := httptest.NewRecorder() setMeta(resp, &meta) header := resp.Header().Get("X-Consul-Index") if header != "1000" { t.Fatalf("Bad: %v", header) } header = resp.Header().Get("X-Consul-KnownLeader") if header != "true" { t.Fatalf("Bad: %v", header) } header = resp.Header().Get("X-Consul-LastContact") if header != "123" { t.Fatalf("Bad: %v", header) } } func TestHTTPAPI_BlockEndpoints(t *testing.T) { t.Parallel() a := NewTestAgent(t.Name(), ` http_config { block_endpoints = ["/v1/agent/self"] } `) defer a.Shutdown() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { return nil, nil } // Try a blocked endpoint, which should get a 403. { req, _ := http.NewRequest("GET", "/v1/agent/self", nil) resp := httptest.NewRecorder() a.srv.wrap(handler)(resp, req) if got, want := resp.Code, http.StatusForbidden; got != want { t.Fatalf("bad response code got %d want %d", got, want) } } // Make sure some other endpoint still works. { req, _ := http.NewRequest("GET", "/v1/agent/checks", nil) resp := httptest.NewRecorder() a.srv.wrap(handler)(resp, req) if got, want := resp.Code, http.StatusOK; got != want { t.Fatalf("bad response code got %d want %d", got, want) } } } func TestHTTPAPI_Ban_Nonprintable_Characters(t *testing.T) { a := NewTestAgent(t.Name(), "") defer a.Shutdown() req, _ := http.NewRequest("GET", "/v1/kv/bad\x00ness", nil) resp := httptest.NewRecorder() a.srv.Handler.ServeHTTP(resp, req) if got, want := resp.Code, http.StatusBadRequest; got != want { t.Fatalf("bad response code got %d want %d", got, want) } } func TestHTTPAPI_TranslateAddrHeader(t *testing.T) { t.Parallel() // Header should not be present if address translation is off. { a := NewTestAgent(t.Name(), "") defer a.Shutdown() resp := httptest.NewRecorder() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { return nil, nil } req, _ := http.NewRequest("GET", "/v1/agent/self", nil) a.srv.wrap(handler)(resp, req) translate := resp.Header().Get("X-Consul-Translate-Addresses") if translate != "" { t.Fatalf("bad: expected %q, got %q", "", translate) } } // Header should be set to true if it's turned on. { a := NewTestAgent(t.Name(), ` translate_wan_addrs = true `) defer a.Shutdown() resp := httptest.NewRecorder() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { return nil, nil } req, _ := http.NewRequest("GET", "/v1/agent/self", nil) a.srv.wrap(handler)(resp, req) translate := resp.Header().Get("X-Consul-Translate-Addresses") if translate != "true" { t.Fatalf("bad: expected %q, got %q", "true", translate) } } } func TestHTTPAPIResponseHeaders(t *testing.T) { t.Parallel() a := NewTestAgent(t.Name(), ` http_config { response_headers = { "Access-Control-Allow-Origin" = "*" "X-XSS-Protection" = "1; mode=block" } } `) defer a.Shutdown() resp := httptest.NewRecorder() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { return nil, nil } req, _ := http.NewRequest("GET", "/v1/agent/self", nil) a.srv.wrap(handler)(resp, req) origin := resp.Header().Get("Access-Control-Allow-Origin") if origin != "*" { t.Fatalf("bad Access-Control-Allow-Origin: expected %q, got %q", "*", origin) } xss := resp.Header().Get("X-XSS-Protection") if xss != "1; mode=block" { t.Fatalf("bad X-XSS-Protection header: expected %q, got %q", "1; mode=block", xss) } } func TestContentTypeIsJSON(t *testing.T) { t.Parallel() a := NewTestAgent(t.Name(), "") defer a.Shutdown() resp := httptest.NewRecorder() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { // stub out a DirEntry so that it will be encoded as JSON return &structs.DirEntry{Key: "key"}, nil } req, _ := http.NewRequest("GET", "/v1/kv/key", nil) a.srv.wrap(handler)(resp, req) contentType := resp.Header().Get("Content-Type") if contentType != "application/json" { t.Fatalf("Content-Type header was not 'application/json'") } } func TestHTTP_wrap_obfuscateLog(t *testing.T) { t.Parallel() buf := new(bytes.Buffer) a := &TestAgent{Name: t.Name(), LogOutput: buf} a.Start() defer a.Shutdown() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { return nil, nil } for _, pair := range [][]string{ { "/some/url?token=secret1&token=secret2", "/some/url?token=&token=", }, { "/v1/acl/clone/secret1", "/v1/acl/clone/", }, { "/v1/acl/clone/secret1?token=secret2", "/v1/acl/clone/?token=", }, { "/v1/acl/destroy/secret1", "/v1/acl/destroy/", }, { "/v1/acl/destroy/secret1?token=secret2", "/v1/acl/destroy/?token=", }, { "/v1/acl/info/secret1", "/v1/acl/info/", }, { "/v1/acl/info/secret1?token=secret2", "/v1/acl/info/?token=", }, } { url, want := pair[0], pair[1] t.Run(url, func(t *testing.T) { resp := httptest.NewRecorder() req, _ := http.NewRequest("GET", url, nil) a.srv.wrap(handler)(resp, req) if got := buf.String(); !strings.Contains(got, want) { t.Fatalf("got %s want %s", got, want) } }) } } func TestPrettyPrint(t *testing.T) { t.Parallel() testPrettyPrint("pretty=1", t) } func TestPrettyPrintBare(t *testing.T) { t.Parallel() testPrettyPrint("pretty", t) } func testPrettyPrint(pretty string, t *testing.T) { a := NewTestAgent(t.Name(), "") defer a.Shutdown() r := &structs.DirEntry{Key: "key"} resp := httptest.NewRecorder() handler := func(resp http.ResponseWriter, req *http.Request) (interface{}, error) { return r, nil } urlStr := "/v1/kv/key?" + pretty req, _ := http.NewRequest("GET", urlStr, nil) a.srv.wrap(handler)(resp, req) expected, _ := json.MarshalIndent(r, "", " ") expected = append(expected, "\n"...) actual, err := ioutil.ReadAll(resp.Body) if err != nil { t.Fatalf("err: %s", err) } if !bytes.Equal(expected, actual) { t.Fatalf("bad: %q", string(actual)) } } func TestParseSource(t *testing.T) { t.Parallel() a := NewTestAgent(t.Name(), "") defer a.Shutdown() // Default is agent's DC and no node (since the user didn't care, then // just give them the cheapest possible query). req, _ := http.NewRequest("GET", "/v1/catalog/nodes", nil) source := structs.QuerySource{} a.srv.parseSource(req, &source) if source.Datacenter != "dc1" || source.Node != "" { t.Fatalf("bad: %v", source) } // Adding the source parameter should set that node. req, _ = http.NewRequest("GET", "/v1/catalog/nodes?near=bob", nil) source = structs.QuerySource{} a.srv.parseSource(req, &source) if source.Datacenter != "dc1" || source.Node != "bob" { t.Fatalf("bad: %v", source) } // We should follow whatever dc parameter was given so that the node is // looked up correctly on the receiving end. req, _ = http.NewRequest("GET", "/v1/catalog/nodes?near=bob&dc=foo", nil) source = structs.QuerySource{} a.srv.parseSource(req, &source) if source.Datacenter != "foo" || source.Node != "bob" { t.Fatalf("bad: %v", source) } // The magic "_agent" node name will use the agent's local node name. req, _ = http.NewRequest("GET", "/v1/catalog/nodes?near=_agent", nil) source = structs.QuerySource{} a.srv.parseSource(req, &source) if source.Datacenter != "dc1" || source.Node != a.Config.NodeName { t.Fatalf("bad: %v", source) } } func TestParseWait(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() var b structs.QueryOptions req, _ := http.NewRequest("GET", "/v1/catalog/nodes?wait=60s&index=1000", nil) if d := parseWait(resp, req, &b); d { t.Fatalf("unexpected done") } if b.MinQueryIndex != 1000 { t.Fatalf("Bad: %v", b) } if b.MaxQueryTime != 60*time.Second { t.Fatalf("Bad: %v", b) } } func TestParseWait_InvalidTime(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() var b structs.QueryOptions req, _ := http.NewRequest("GET", "/v1/catalog/nodes?wait=60foo&index=1000", nil) if d := parseWait(resp, req, &b); !d { t.Fatalf("expected done") } if resp.Code != 400 { t.Fatalf("bad code: %v", resp.Code) } } func TestParseWait_InvalidIndex(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() var b structs.QueryOptions req, _ := http.NewRequest("GET", "/v1/catalog/nodes?wait=60s&index=foo", nil) if d := parseWait(resp, req, &b); !d { t.Fatalf("expected done") } if resp.Code != 400 { t.Fatalf("bad code: %v", resp.Code) } } func TestParseConsistency(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() var b structs.QueryOptions req, _ := http.NewRequest("GET", "/v1/catalog/nodes?stale", nil) if d := parseConsistency(resp, req, &b); d { t.Fatalf("unexpected done") } if !b.AllowStale { t.Fatalf("Bad: %v", b) } if b.RequireConsistent { t.Fatalf("Bad: %v", b) } b = structs.QueryOptions{} req, _ = http.NewRequest("GET", "/v1/catalog/nodes?consistent", nil) if d := parseConsistency(resp, req, &b); d { t.Fatalf("unexpected done") } if b.AllowStale { t.Fatalf("Bad: %v", b) } if !b.RequireConsistent { t.Fatalf("Bad: %v", b) } } func TestParseConsistency_Invalid(t *testing.T) { t.Parallel() resp := httptest.NewRecorder() var b structs.QueryOptions req, _ := http.NewRequest("GET", "/v1/catalog/nodes?stale&consistent", nil) if d := parseConsistency(resp, req, &b); !d { t.Fatalf("expected done") } if resp.Code != 400 { t.Fatalf("bad code: %v", resp.Code) } } // Test ACL token is resolved in correct order func TestACLResolution(t *testing.T) { t.Parallel() var token string // Request without token req, _ := http.NewRequest("GET", "/v1/catalog/nodes", nil) // Request with explicit token reqToken, _ := http.NewRequest("GET", "/v1/catalog/nodes?token=foo", nil) // Request with header token only reqHeaderToken, _ := http.NewRequest("GET", "/v1/catalog/nodes", nil) reqHeaderToken.Header.Add("X-Consul-Token", "bar") // Request with header and querystring tokens reqBothTokens, _ := http.NewRequest("GET", "/v1/catalog/nodes?token=baz", nil) reqBothTokens.Header.Add("X-Consul-Token", "zap") a := NewTestAgent(t.Name(), "") defer a.Shutdown() // Check when no token is set a.tokens.UpdateUserToken("") a.srv.parseToken(req, &token) if token != "" { t.Fatalf("bad: %s", token) } // Check when ACLToken set a.tokens.UpdateUserToken("agent") a.srv.parseToken(req, &token) if token != "agent" { t.Fatalf("bad: %s", token) } // Explicit token has highest precedence a.srv.parseToken(reqToken, &token) if token != "foo" { t.Fatalf("bad: %s", token) } // Header token has precedence over agent token a.srv.parseToken(reqHeaderToken, &token) if token != "bar" { t.Fatalf("bad: %s", token) } // Querystring token has precedence over header and agent tokens a.srv.parseToken(reqBothTokens, &token) if token != "baz" { t.Fatalf("bad: %s", token) } } func TestEnableWebUI(t *testing.T) { t.Parallel() a := NewTestAgent(t.Name(), ` ui = true `) defer a.Shutdown() req, _ := http.NewRequest("GET", "/ui/", nil) resp := httptest.NewRecorder() a.srv.Handler.ServeHTTP(resp, req) if resp.Code != 200 { t.Fatalf("should handle ui") } } // assertIndex tests that X-Consul-Index is set and non-zero func assertIndex(t *testing.T, resp *httptest.ResponseRecorder) { header := resp.Header().Get("X-Consul-Index") if header == "" || header == "0" { t.Fatalf("Bad: %v", header) } } // checkIndex is like assertIndex but returns an error func checkIndex(resp *httptest.ResponseRecorder) error { header := resp.Header().Get("X-Consul-Index") if header == "" || header == "0" { return fmt.Errorf("Bad: %v", header) } return nil } // getIndex parses X-Consul-Index func getIndex(t *testing.T, resp *httptest.ResponseRecorder) uint64 { header := resp.Header().Get("X-Consul-Index") if header == "" { t.Fatalf("Bad: %v", header) } val, err := strconv.Atoi(header) if err != nil { t.Fatalf("Bad: %v", header) } return uint64(val) } func jsonReader(v interface{}) io.Reader { if v == nil { return nil } b := new(bytes.Buffer) if err := json.NewEncoder(b).Encode(v); err != nil { panic(err) } return b }