Exemplo n.º 1
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// FromIP converts a net.IP type to a Multiaddr.
func FromIP(ip net.IP) (ma.Multiaddr, error) {
	switch {
	case ip.To4() != nil:
		return ma.NewMultiaddr("/ip4/" + ip.String())
	case ip.To16() != nil:
		return ma.NewMultiaddr("/ip6/" + ip.String())
	default:
		return nil, errIncorrectNetAddr
	}
}
Exemplo n.º 2
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func MA(t *testing.T, m string) ma.Multiaddr {
	maddr, err := ma.NewMultiaddr(m)
	if err != nil {
		t.Fatal(err)
	}
	return maddr
}
Exemplo n.º 3
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func newAddrOrFatal(t *testing.T, s string) ma.Multiaddr {
	a, err := ma.NewMultiaddr(s)
	if err != nil {
		t.Fatal("error parsing multiaddr", err)
	}
	return a
}
Exemplo n.º 4
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// getApiClient checks the repo, and the given options, checking for
// a running API service. if there is one, it returns a client.
// otherwise, it returns errApiNotRunning, or another error.
func getApiClient(repoPath, apiAddrStr string) (cmdsHttp.Client, error) {

	if apiAddrStr == "" {
		var err error
		if apiAddrStr, err = fsrepo.APIAddr(repoPath); err != nil {
			return nil, err
		}
	}

	addr, err := ma.NewMultiaddr(apiAddrStr)
	if err != nil {
		return nil, err
	}

	client, err := apiClientForAddr(addr)
	if err != nil {
		return nil, err
	}

	// make sure the api is actually running.
	// this is slow, as it might mean an RTT to a remote server.
	// TODO: optimize some way
	if err := apiVersionMatches(client); err != nil {
		return nil, err
	}

	return client, nil
}
Exemplo n.º 5
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func TestDialBadAddrs(t *testing.T) {

	m := func(s string) ma.Multiaddr {
		maddr, err := ma.NewMultiaddr(s)
		if err != nil {
			t.Fatal(err)
		}
		return maddr
	}

	ctx := context.Background()
	s := makeSwarms(ctx, t, 1)[0]

	test := func(a ma.Multiaddr) {
		p := testutil.RandPeerIDFatal(t)
		s.peers.AddAddr(p, a, peer.PermanentAddrTTL)
		if _, err := s.Dial(ctx, p); err == nil {
			t.Error("swarm should not dial: %s", m)
		}
	}

	test(m("/ip6/fe80::1"))                // link local
	test(m("/ip6/fe80::100"))              // link local
	test(m("/ip4/127.0.0.1/udp/1234/utp")) // utp
}
Exemplo n.º 6
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func TestDialArgs(t *testing.T) {
	test := func(e_maddr, e_nw, e_host string) {
		m, err := ma.NewMultiaddr(e_maddr)
		if err != nil {
			t.Fatal("failed to construct", "/ip4/127.0.0.1/udp/1234", e_maddr)
		}

		nw, host, err := DialArgs(m)
		if err != nil {
			t.Fatal("failed to get dial args", e_maddr, m, err)
		}

		if nw != e_nw {
			t.Error("failed to get udp network Dial Arg", e_nw, nw)
		}

		if host != e_host {
			t.Error("failed to get host:port Dial Arg", e_host, host)
		}
	}

	test("/ip4/127.0.0.1/udp/1234", "udp4", "127.0.0.1:1234")
	test("/ip4/127.0.0.1/tcp/4321", "tcp4", "127.0.0.1:4321")
	test("/ip4/127.0.0.1/udp/1234/utp", "utp4", "127.0.0.1:1234")
	test("/ip6/::1/udp/1234", "udp6", "[::1]:1234")
	test("/ip6/::1/tcp/4321", "tcp6", "[::1]:4321")
	test("/ip6/::1/udp/1234/utp", "utp6", "[::1]:1234")
}
Exemplo n.º 7
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func TestThinWaist(t *testing.T) {
	addrs := map[string]bool{
		"/ip4/127.0.0.1/udp/1234":              true,
		"/ip4/127.0.0.1/tcp/1234":              true,
		"/ip4/127.0.0.1/udp/1234/utp":          true,
		"/ip4/127.0.0.1/udp/1234/tcp/1234":     true,
		"/ip4/127.0.0.1/tcp/12345/ip4/1.2.3.4": true,
		"/ip6/::1/tcp/80":                      true,
		"/ip6/::1/udp/80":                      true,
		"/ip6/::1":                             true,
		"/ip6/::1/utp":                         false,
		"/tcp/1234/ip4/1.2.3.4":                false,
		"/tcp/1234":                            false,
		"/tcp/1234/utp":                        false,
		"/tcp/1234/udp/1234":                   false,
		"/ip4/1.2.3.4/ip4/2.3.4.5":             true,
		"/ip6/::1/ip4/2.3.4.5":                 true,
	}

	for a, res := range addrs {
		m, err := ma.NewMultiaddr(a)
		if err != nil {
			t.Fatalf("failed to construct Multiaddr: %s", a)
		}

		if IsThinWaist(m) != res {
			t.Fatalf("IsThinWaist(%s) != %v", a, res)
		}
	}
}
Exemplo n.º 8
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func newMultiaddr(t *testing.T, m string) ma.Multiaddr {
	maddr, err := ma.NewMultiaddr(m)
	if err != nil {
		t.Fatal("failed to construct multiaddr:", m, err)
	}
	return maddr
}
Exemplo n.º 9
0
func newMultiaddr(t *testing.T, s string) ma.Multiaddr {
	maddr, err := ma.NewMultiaddr(s)
	if err != nil {
		t.Fatal(err)
	}
	return maddr
}
Exemplo n.º 10
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func address(addr string) ma.Multiaddr {
	m, err := ma.NewMultiaddr(addr)
	if err != nil {
		die(err)
	}

	return m
}
Exemplo n.º 11
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func init() {
	// initialize ZeroLocalTCPAddress
	maddr, err := ma.NewMultiaddr("/ip4/127.0.0.1/tcp/0")
	if err != nil {
		panic(err)
	}
	ZeroLocalTCPAddress = maddr
}
Exemplo n.º 12
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// serveHTTPGateway collects options, creates listener, prints status message and starts serving requests
func serveHTTPGateway(req cmds.Request) (error, <-chan error) {
	cfg, err := req.InvocContext().GetConfig()
	if err != nil {
		return fmt.Errorf("serveHTTPGateway: GetConfig() failed: %s", err), nil
	}

	gatewayMaddr, err := ma.NewMultiaddr(cfg.Addresses.Gateway)
	if err != nil {
		return fmt.Errorf("serveHTTPGateway: invalid gateway address: %q (err: %s)", cfg.Addresses.Gateway, err), nil
	}

	writable, writableOptionFound, err := req.Option(writableKwd).Bool()
	if err != nil {
		return fmt.Errorf("serveHTTPGateway: req.Option(%s) failed: %s", writableKwd, err), nil
	}
	if !writableOptionFound {
		writable = cfg.Gateway.Writable
	}

	gwLis, err := manet.Listen(gatewayMaddr)
	if err != nil {
		return fmt.Errorf("serveHTTPGateway: manet.Listen(%s) failed: %s", gatewayMaddr, err), nil
	}
	// we might have listened to /tcp/0 - lets see what we are listing on
	gatewayMaddr = gwLis.Multiaddr()

	if writable {
		fmt.Printf("Gateway (writable) server listening on %s\n", gatewayMaddr)
	} else {
		fmt.Printf("Gateway (readonly) server listening on %s\n", gatewayMaddr)
	}

	var opts = []corehttp.ServeOption{
		corehttp.CommandsROOption(*req.InvocContext()),
		corehttp.VersionOption(),
		corehttp.IPNSHostnameOption(),
		corehttp.GatewayOption(writable),
	}

	if len(cfg.Gateway.RootRedirect) > 0 {
		opts = append(opts, corehttp.RedirectOption("", cfg.Gateway.RootRedirect))
	}

	node, err := req.InvocContext().ConstructNode()
	if err != nil {
		return fmt.Errorf("serveHTTPGateway: ConstructNode() failed: %s", err), nil
	}

	errc := make(chan error)
	go func() {
		errc <- corehttp.Serve(node, gwLis.NetListener(), opts...)
		close(errc)
	}()
	return nil, errc
}
Exemplo n.º 13
0
func main() {
	flag.Parse()

	// extract address from host flag
	addr, err := ma.NewMultiaddr(*host)
	if err != nil {
		log.WithField("err", err).Fatal("NewMultiaddr() failed")
	}
	p := addr.Protocols()
	if len(p) < 2 {
		log.WithField("addr", addr).Fatal("need two protocols in host flag (/ip/tcp)")
	}
	_, host, err := manet.DialArgs(addr)
	if err != nil {
		log.WithField("err", err).Fatal("manet.DialArgs() failed")
	}

	if *verbose { // lower log level
		log.SetLevel(log.DebugLevel)
	}

	// construct url to dial
	var u url.URL
	u.Scheme = "http"
	u.Host = host
	u.Path = *endpoint

	// show what we got
	start := time.Now()
	log.WithFields(log.Fields{
		"when":    start,
		"tries":   *tries,
		"timeout": *timeout,
		"url":     u.String(),
	}).Debug("starting")

	for *tries > 0 {
		f := log.Fields{"tries": *tries}

		err := checkOK(http.Get(u.String()))
		if err == nil {
			f["took"] = time.Since(start)
			log.WithFields(f).Println("status ok - endpoint reachable")
			os.Exit(0)
		}
		f["error"] = err
		log.WithFields(f).Debug("get failed")
		time.Sleep(*timeout)
		*tries--
	}

	log.Println("failed.")
	os.Exit(1)
}
Exemplo n.º 14
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func listenAddresses(cfg *config.Config) ([]ma.Multiaddr, error) {
	var listen []ma.Multiaddr
	for _, addr := range cfg.Addresses.Swarm {
		maddr, err := ma.NewMultiaddr(addr)
		if err != nil {
			return nil, fmt.Errorf("Failure to parse config.Addresses.Swarm: %s", cfg.Addresses.Swarm)
		}
		listen = append(listen, maddr)
	}

	return listen, nil
}
Exemplo n.º 15
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// ParseString parses a string representation of an address into an IPFSAddr
func ParseString(str string) (a IPFSAddr, err error) {
	if str == "" {
		return nil, ErrInvalidAddr
	}

	m, err := ma.NewMultiaddr(str)
	if err != nil {
		return nil, err
	}

	return ParseMultiaddr(m)
}
Exemplo n.º 16
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func TestParseMultiaddrBad(t *testing.T) {
	for _, b := range bad {
		m, err := ma.NewMultiaddr(b)
		if err != nil {
			continue // skip these.
		}

		if _, err := ParseMultiaddr(m); err == nil {
			t.Error("succeeded in parsing", m)
		}
	}
}
Exemplo n.º 17
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// ListenAndServe runs an HTTP server listening at |listeningMultiAddr| with
// the given serve options. The address must be provided in multiaddr format.
//
// TODO intelligently parse address strings in other formats so long as they
// unambiguously map to a valid multiaddr. e.g. for convenience, ":8080" should
// map to "/ip4/0.0.0.0/tcp/8080".
func ListenAndServe(n *core.IpfsNode, listeningMultiAddr string, options ...ServeOption) error {
	addr, err := ma.NewMultiaddr(listeningMultiAddr)
	if err != nil {
		return err
	}

	list, err := manet.Listen(addr)
	if err != nil {
		return err
	}

	// we might have listened to /tcp/0 - lets see what we are listing on
	addr = list.Multiaddr()
	fmt.Printf("API server listening on %s\n", addr)

	return Serve(n, list.NetListener(), options...)
}
Exemplo n.º 18
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// RandLocalTCPAddress returns a random multiaddr. it suppresses errors
// for nice composability-- do check the address isn't nil.
//
// Note: for real network tests, use ZeroLocalTCPAddress so the kernel
// assigns an unused TCP port. otherwise you may get clashes. This
// function remains here so that p2p/net/mock (which does not touch the
// real network) can assign different addresses to peers.
func RandLocalTCPAddress() ma.Multiaddr {

	// chances are it will work out, but it **might** fail if the port is in use
	// most ports above 10000 aren't in use by long running processes, so yay.
	// (maybe there should be a range of "loopback" ports that are guaranteed
	// to be open for the process, but naturally can only talk to self.)

	lastPort.Lock()
	if lastPort.port == 0 {
		lastPort.port = 10000 + SeededRand.Intn(50000)
	}
	port := lastPort.port
	lastPort.port++
	lastPort.Unlock()

	addr := fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port)
	maddr, _ := ma.NewMultiaddr(addr)
	return maddr
}
Exemplo n.º 19
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func testToNetAddr(t *testing.T, maddr, ntwk, addr string) {
	m, err := ma.NewMultiaddr(maddr)
	if err != nil {
		t.Fatal("failed to generate.")
	}

	naddr, err := ToNetAddr(m)
	if addr == "" { // should fail
		if err == nil {
			t.Fatalf("failed to error: %s", m)
		}
		return
	}

	// shouldn't fail
	if err != nil {
		t.Fatalf("failed to convert to net addr: %s", m)
	}

	if naddr.String() != addr {
		t.Fatalf("naddr.Address() == %s != %s", naddr, addr)
	}

	if naddr.Network() != ntwk {
		t.Fatalf("naddr.Network() == %s != %s", naddr.Network(), ntwk)
	}

	// should convert properly
	switch ntwk {
	case "tcp":
		_ = naddr.(*net.TCPAddr)
	case "udp":
		_ = naddr.(*net.UDPAddr)
	case "ip":
		_ = naddr.(*net.IPAddr)
	}
}
Exemplo n.º 20
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func (m *mapping) ExternalAddr() (ma.Multiaddr, error) {
	if time.Now().Sub(m.cacheTime) < CacheTime {
		return m.cached, nil
	}

	if m.ExternalPort() == 0 { // dont even try right now.
		return nil, ErrNoMapping
	}

	ip, err := m.nat.nat.GetExternalAddress()
	if err != nil {
		return nil, err
	}

	ipmaddr, err := manet.FromIP(ip)
	if err != nil {
		return nil, fmt.Errorf("error parsing ip")
	}

	// call m.ExternalPort again, as mapping may have changed under our feet. (tocttou)
	extport := m.ExternalPort()
	if extport == 0 {
		return nil, ErrNoMapping
	}

	tcp, err := ma.NewMultiaddr(fmt.Sprintf("/%s/%d", m.Protocol(), extport))
	if err != nil {
		return nil, err
	}

	maddr2 := ipmaddr.Encapsulate(tcp)

	m.cached = maddr2
	m.cacheTime = time.Now()
	return maddr2, nil
}
Exemplo n.º 21
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func ParsePeerParam(text string) (ma.Multiaddr, peer.ID, error) {
	// to be replaced with just multiaddr parsing, once ptp is a multiaddr protocol
	idx := strings.LastIndex(text, "/")
	if idx == -1 {
		pid, err := peer.IDB58Decode(text)
		if err != nil {
			return nil, "", err
		}

		return nil, pid, nil
	}

	addrS := text[:idx]
	peeridS := text[idx+1:]

	var maddr ma.Multiaddr
	var pid peer.ID

	// make sure addrS parses as a multiaddr.
	if len(addrS) > 0 {
		var err error
		maddr, err = ma.NewMultiaddr(addrS)
		if err != nil {
			return nil, "", err
		}
	}

	// make sure idS parses as a peer.ID
	var err error
	pid, err = peer.IDB58Decode(peeridS)
	if err != nil {
		return nil, "", err
	}

	return maddr, pid, nil
}
Exemplo n.º 22
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// FromNetAddr converts a net.Addr type to a Multiaddr.
func FromNetAddr(a net.Addr) (ma.Multiaddr, error) {
	switch a.Network() {
	case "tcp", "tcp4", "tcp6":
		ac, ok := a.(*net.TCPAddr)
		if !ok {
			return nil, errIncorrectNetAddr
		}

		// Get IP Addr
		ipm, err := FromIP(ac.IP)
		if err != nil {
			return nil, errIncorrectNetAddr
		}

		// Get TCP Addr
		tcpm, err := ma.NewMultiaddr(fmt.Sprintf("/tcp/%d", ac.Port))
		if err != nil {
			return nil, errIncorrectNetAddr
		}

		// Encapsulate
		return ipm.Encapsulate(tcpm), nil

	case "udp", "upd4", "udp6":
		ac, ok := a.(*net.UDPAddr)
		if !ok {
			return nil, errIncorrectNetAddr
		}

		// Get IP Addr
		ipm, err := FromIP(ac.IP)
		if err != nil {
			return nil, errIncorrectNetAddr
		}

		// Get UDP Addr
		udpm, err := ma.NewMultiaddr(fmt.Sprintf("/udp/%d", ac.Port))
		if err != nil {
			return nil, errIncorrectNetAddr
		}

		// Encapsulate
		return ipm.Encapsulate(udpm), nil

	case "utp", "utp4", "utp6":
		acc, ok := a.(*utp.Addr)
		if !ok {
			return nil, errIncorrectNetAddr
		}

		// Get UDP Addr
		ac, ok := acc.Addr.(*net.UDPAddr)
		if !ok {
			return nil, errIncorrectNetAddr
		}

		// Get IP Addr
		ipm, err := FromIP(ac.IP)
		if err != nil {
			return nil, errIncorrectNetAddr
		}

		// Get UDP Addr
		utpm, err := ma.NewMultiaddr(fmt.Sprintf("/udp/%d/utp", ac.Port))
		if err != nil {
			return nil, errIncorrectNetAddr
		}

		// Encapsulate
		return ipm.Encapsulate(utpm), nil

	case "ip", "ip4", "ip6":
		ac, ok := a.(*net.IPAddr)
		if !ok {
			return nil, errIncorrectNetAddr
		}
		return FromIP(ac.IP)

	case "ip+net":
		ac, ok := a.(*net.IPNet)
		if !ok {
			return nil, errIncorrectNetAddr
		}
		return FromIP(ac.IP)

	default:
		return nil, fmt.Errorf("unknown network %v", a.Network())
	}
}
Exemplo n.º 23
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// TestObsAddrSet
func TestObsAddrSet(t *testing.T) {
	m := func(s string) ma.Multiaddr {
		m, err := ma.NewMultiaddr(s)
		if err != nil {
			t.Error(err)
		}
		return m
	}

	addrsMarch := func(a, b []ma.Multiaddr) bool {
		for _, aa := range a {
			found := false
			for _, bb := range b {
				if aa.Equal(bb) {
					found = true
					break
				}
			}
			if !found {
				return false
			}
		}
		return true
	}

	a1 := m("/ip4/1.2.3.4/tcp/1231")
	a2 := m("/ip4/1.2.3.4/tcp/1232")
	a3 := m("/ip4/1.2.3.4/tcp/1233")
	a4 := m("/ip4/1.2.3.4/tcp/1234")
	a5 := m("/ip4/1.2.3.4/tcp/1235")
	a6 := m("/ip4/1.2.3.6/tcp/1236")
	a7 := m("/ip4/1.2.3.7/tcp/1237")

	oas := ObservedAddrSet{}

	if !addrsMarch(oas.Addrs(), nil) {
		t.Error("addrs should be empty")
	}

	oas.Add(a1, a4)
	oas.Add(a2, a4)
	oas.Add(a3, a4)

	// these are all different so we should not yet get them.
	if !addrsMarch(oas.Addrs(), nil) {
		t.Error("addrs should _still_ be empty (once)")
	}

	// same observer, so should not yet get them.
	oas.Add(a1, a4)
	oas.Add(a2, a4)
	oas.Add(a3, a4)
	if !addrsMarch(oas.Addrs(), nil) {
		t.Error("addrs should _still_ be empty (same obs)")
	}

	// different observer, but same observer group.
	oas.Add(a1, a5)
	oas.Add(a2, a5)
	oas.Add(a3, a5)
	if !addrsMarch(oas.Addrs(), nil) {
		t.Error("addrs should _still_ be empty (same obs group)")
	}

	oas.Add(a1, a6)
	if !addrsMarch(oas.Addrs(), []ma.Multiaddr{a1}) {
		t.Error("addrs should only have a1")
	}

	oas.Add(a2, a5)
	oas.Add(a1, a5)
	oas.Add(a1, a5)
	oas.Add(a2, a6)
	oas.Add(a1, a6)
	oas.Add(a1, a6)
	oas.Add(a2, a7)
	oas.Add(a1, a7)
	oas.Add(a1, a7)
	if !addrsMarch(oas.Addrs(), []ma.Multiaddr{a1, a2}) {
		t.Error("addrs should only have a1, a2")
	}

	// change the timeout constant so we can time it out.
	oas.SetTTL(time.Millisecond * 200)
	<-time.After(time.Millisecond * 210)
	if !addrsMarch(oas.Addrs(), []ma.Multiaddr{nil}) {
		t.Error("addrs should have timed out")
	}
}
Exemplo n.º 24
0
func TestFilterAddrs(t *testing.T) {

	m := func(s string) ma.Multiaddr {
		maddr, err := ma.NewMultiaddr(s)
		if err != nil {
			t.Fatal(err)
		}
		return maddr
	}

	bad := []ma.Multiaddr{
		m("/ip4/1.2.3.4/udp/1234"),           // unreliable
		m("/ip4/1.2.3.4/udp/1234/sctp/1234"), // not in manet
		m("/ip4/1.2.3.4/udp/1234/utp"),       // utp is broken
		m("/ip4/1.2.3.4/udp/1234/udt"),       // udt is broken on arm
		m("/ip6/fe80::1/tcp/0"),              // link local
		m("/ip6/fe80::100/tcp/1234"),         // link local
	}

	good := []ma.Multiaddr{
		m("/ip4/127.0.0.1/tcp/0"),
		m("/ip6/::1/tcp/0"),
	}

	goodAndBad := append(good, bad...)

	// test filters

	for _, a := range bad {
		if addrutil.AddrUsable(a, true) {
			t.Errorf("addr %s should be unusable", a)
		}
	}

	for _, a := range good {
		if !addrutil.AddrUsable(a, true) {
			t.Errorf("addr %s should be usable", a)
		}
	}

	subtestAddrsEqual(t, addrutil.FilterUsableAddrs(bad), []ma.Multiaddr{})
	subtestAddrsEqual(t, addrutil.FilterUsableAddrs(good), good)
	subtestAddrsEqual(t, addrutil.FilterUsableAddrs(goodAndBad), good)

	// now test it with swarm

	id, err := testutil.RandPeerID()
	if err != nil {
		t.Fatal(err)
	}

	ps := peer.NewPeerstore()
	ctx := context.Background()

	if _, err := NewNetwork(ctx, bad, id, ps, metrics.NewBandwidthCounter()); err == nil {
		t.Fatal("should have failed to create swarm")
	}

	if _, err := NewNetwork(ctx, goodAndBad, id, ps, metrics.NewBandwidthCounter()); err != nil {
		t.Fatal("should have succeeded in creating swarm", err)
	}
}
Exemplo n.º 25
0
// serveHTTPApi collects options, creates listener, prints status message and starts serving requests
func serveHTTPApi(req cmds.Request) (error, <-chan error) {
	cfg, err := req.InvocContext().GetConfig()
	if err != nil {
		return fmt.Errorf("serveHTTPApi: GetConfig() failed: %s", err), nil
	}

	apiAddr, _, err := req.Option(commands.ApiOption).String()
	if err != nil {
		return fmt.Errorf("serveHTTPApi: %s", err), nil
	}
	if apiAddr == "" {
		apiAddr = cfg.Addresses.API
	}
	apiMaddr, err := ma.NewMultiaddr(apiAddr)
	if err != nil {
		return fmt.Errorf("serveHTTPApi: invalid API address: %q (err: %s)", apiAddr, err), nil
	}

	apiLis, err := manet.Listen(apiMaddr)
	if err != nil {
		return fmt.Errorf("serveHTTPApi: manet.Listen(%s) failed: %s", apiMaddr, err), nil
	}
	// we might have listened to /tcp/0 - lets see what we are listing on
	apiMaddr = apiLis.Multiaddr()
	fmt.Printf("API server listening on %s\n", apiMaddr)

	unrestricted, _, err := req.Option(unrestrictedApiAccessKwd).Bool()
	if err != nil {
		return fmt.Errorf("serveHTTPApi: Option(%s) failed: %s", unrestrictedApiAccessKwd, err), nil
	}

	apiGw := corehttp.NewGateway(corehttp.GatewayConfig{
		Writable: true,
		BlockList: &corehttp.BlockList{
			Decider: func(s string) bool {
				if unrestricted {
					return true
				}
				// for now, only allow paths in the WebUI path
				for _, webuipath := range corehttp.WebUIPaths {
					if strings.HasPrefix(s, webuipath) {
						return true
					}
				}
				return false
			},
		},
	})
	var opts = []corehttp.ServeOption{
		corehttp.CommandsOption(*req.InvocContext()),
		corehttp.WebUIOption,
		apiGw.ServeOption(),
		corehttp.VersionOption(),
		defaultMux("/debug/vars"),
		defaultMux("/debug/pprof/"),
		corehttp.LogOption(),
		corehttp.PrometheusOption("/debug/metrics/prometheus"),
	}

	if len(cfg.Gateway.RootRedirect) > 0 {
		opts = append(opts, corehttp.RedirectOption("", cfg.Gateway.RootRedirect))
	}

	node, err := req.InvocContext().ConstructNode()
	if err != nil {
		return fmt.Errorf("serveHTTPApi: ConstructNode() failed: %s", err), nil
	}

	if err := node.Repo.SetAPIAddr(apiMaddr.String()); err != nil {
		return fmt.Errorf("serveHTTPApi: SetAPIAddr() failed: %s", err), nil
	}

	errc := make(chan error)
	go func() {
		errc <- corehttp.Serve(node, apiLis.NetListener(), opts...)
		close(errc)
	}()
	return nil, errc
}