mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-02-11 05:31:09 +00:00
290 lines
7.8 KiB
Go
290 lines
7.8 KiB
Go
/*
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* Copyright (c)2019 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2023-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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/****/
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package zerotier
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import (
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secrand "crypto/rand"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"path"
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"strings"
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"time"
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acl "github.com/hectane/go-acl"
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)
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type apiStatus struct {
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Address Address
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Clock int64
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Config LocalConfig
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Online bool
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Identity *Identity
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InterfaceAddresses []net.IP
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MappedExternalAddresses []*InetAddress
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Version string
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VersionMajor int
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VersionMinor int
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VersionRevision int
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VersionBuild int
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}
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type apiNetwork struct {
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Config *NetworkConfig
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Settings *NetworkLocalSettings
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MulticastSubscriptions []*MulticastGroup
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TapDeviceType string
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TapDeviceName string
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TapDeviceEnabled bool
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}
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func apiSetStandardHeaders(out http.ResponseWriter) {
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now := time.Now().UTC()
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h := out.Header()
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h.Set("Cache-Control", "no-cache, no-store, must-revalidate")
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h.Set("Expires", "0")
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h.Set("Pragma", "no-cache")
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h.Set("Date", now.Format(time.RFC1123))
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}
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func apiSendObj(out http.ResponseWriter, req *http.Request, httpStatusCode int, obj interface{}) error {
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h := out.Header()
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h.Set("Content-Type", "application/json")
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if req.Method == http.MethodHead {
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out.WriteHeader(httpStatusCode)
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return nil
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}
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var j []byte
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var err error
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if obj != nil {
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j, err = json.Marshal(obj)
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if err != nil {
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return err
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}
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}
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out.WriteHeader(httpStatusCode)
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_, err = out.Write(j)
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return err
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}
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func apiReadObj(out http.ResponseWriter, req *http.Request, dest interface{}) (err error) {
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err = json.NewDecoder(req.Body).Decode(&dest)
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if err != nil {
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apiSendObj(out, req, http.StatusBadRequest, nil)
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}
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return
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}
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func apiCheckAuth(out http.ResponseWriter, req *http.Request, token string) bool {
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ah := req.Header.Get("X-ZT1-Auth")
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if len(ah) > 0 && strings.TrimSpace(ah) == token {
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return true
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}
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ah = req.Header.Get("Authorization")
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if len(ah) > 0 && strings.TrimSpace(ah) == ("bearer "+token) {
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return true
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}
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apiSendObj(out, req, http.StatusUnauthorized, nil)
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return false
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}
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// createAPIServer creates and starts an HTTP server for a given node
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func createAPIServer(basePath string, node *Node) (*http.Server, error) {
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// Read authorization token, automatically generating one if it's missing
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var authToken string
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authTokenFile := path.Join(basePath, "authtoken.secret")
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authTokenB, err := ioutil.ReadFile(authTokenFile)
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if err != nil {
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var atb [20]byte
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_, err = secrand.Read(atb[:])
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if err != nil {
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return nil, err
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}
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for i := 0; i < 20; i++ {
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atb[i] = byte("abcdefghijklmnopqrstuvwxyz0123456789"[atb[i]%36])
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}
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err = ioutil.WriteFile(authTokenFile, atb[:], 0600)
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if err != nil {
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return nil, err
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}
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acl.Chmod(authTokenFile, 0600)
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authToken = string(atb[:])
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} else {
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authToken = strings.TrimSpace(string(authTokenB))
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}
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smux := http.NewServeMux()
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smux.HandleFunc("/status", func(out http.ResponseWriter, req *http.Request) {
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if !apiCheckAuth(out, req, authToken) {
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return
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}
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apiSetStandardHeaders(out)
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if req.Method == http.MethodGet || req.Method == http.MethodHead {
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apiSendObj(out, req, http.StatusOK, &apiStatus{
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Address: node.Address(),
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Clock: TimeMs(),
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Config: node.LocalConfig(),
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Online: node.Online(),
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Identity: node.Identity(),
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InterfaceAddresses: node.InterfaceAddresses(),
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MappedExternalAddresses: nil,
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Version: fmt.Sprintf("%d.%d.%d", CoreVersionMajor, CoreVersionMinor, CoreVersionRevision),
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VersionMajor: CoreVersionMajor,
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VersionMinor: CoreVersionMinor,
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VersionRevision: CoreVersionRevision,
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VersionBuild: CoreVersionBuild,
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})
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} else {
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out.Header().Set("Allow", "GET, HEAD")
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apiSendObj(out, req, http.StatusMethodNotAllowed, nil)
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}
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})
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smux.HandleFunc("/config", func(out http.ResponseWriter, req *http.Request) {
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if !apiCheckAuth(out, req, authToken) {
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return
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}
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apiSetStandardHeaders(out)
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if req.Method == http.MethodPost || req.Method == http.MethodPut {
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var c LocalConfig
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if apiReadObj(out, req, &c) == nil {
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apiSendObj(out, req, http.StatusOK, node.LocalConfig())
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}
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} else if req.Method == http.MethodGet || req.Method == http.MethodHead {
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apiSendObj(out, req, http.StatusOK, node.LocalConfig())
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} else {
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out.Header().Set("Allow", "GET, HEAD, PUT, POST")
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apiSendObj(out, req, http.StatusMethodNotAllowed, nil)
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}
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})
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smux.HandleFunc("/peer/", func(out http.ResponseWriter, req *http.Request) {
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if !apiCheckAuth(out, req, authToken) {
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return
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}
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apiSetStandardHeaders(out)
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var queriedID Address
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if len(req.URL.Path) > 6 {
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var err error
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queriedID, err = NewAddressFromString(req.URL.Path[6:])
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if err != nil {
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apiSendObj(out, req, http.StatusNotFound, nil)
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return
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}
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}
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if req.Method == http.MethodGet || req.Method == http.MethodHead {
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peers := node.Peers()
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if queriedID != 0 {
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p2 := make([]*Peer, 0, len(peers))
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for _, p := range peers {
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if p.Address == queriedID {
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p2 = append(p2, p)
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}
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}
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apiSendObj(out, req, http.StatusOK, p2)
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} else {
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apiSendObj(out, req, http.StatusOK, peers)
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}
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} else {
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out.Header().Set("Allow", "GET, HEAD")
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apiSendObj(out, req, http.StatusMethodNotAllowed, nil)
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}
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})
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smux.HandleFunc("/network/", func(out http.ResponseWriter, req *http.Request) {
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if !apiCheckAuth(out, req, authToken) {
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return
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}
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apiSetStandardHeaders(out)
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var queriedID NetworkID
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if len(req.URL.Path) > 9 {
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var err error
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queriedID, err = NewNetworkIDFromString(req.URL.Path[9:])
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if err != nil {
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apiSendObj(out, req, http.StatusNotFound, nil)
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return
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}
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}
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if req.Method == http.MethodPost || req.Method == http.MethodPut {
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if queriedID == 0 {
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apiSendObj(out, req, http.StatusBadRequest, nil)
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}
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} else if req.Method == http.MethodGet || req.Method == http.MethodHead {
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if queriedID == 0 { // no queried ID lists all networks
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networks := node.Networks()
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apiSendObj(out, req, http.StatusOK, networks)
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} else {
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}
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} else {
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out.Header().Set("Allow", "GET, HEAD, PUT, POST")
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apiSendObj(out, req, http.StatusMethodNotAllowed, nil)
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}
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})
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smux.HandleFunc("/root/", func(out http.ResponseWriter, req *http.Request) {
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if !apiCheckAuth(out, req, authToken) {
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return
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}
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apiSetStandardHeaders(out)
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var queriedID Address
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if len(req.URL.Path) > 6 {
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var err error
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queriedID, err = NewAddressFromString(req.URL.Path[6:])
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if err != nil {
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apiSendObj(out, req, http.StatusNotFound, nil)
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return
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}
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}
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if req.Method == http.MethodPost || req.Method == http.MethodPut {
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if queriedID == 0 {
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apiSendObj(out, req, http.StatusBadRequest, nil)
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}
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} else if req.Method == http.MethodGet || req.Method == http.MethodHead {
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roots := node.Roots()
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apiSendObj(out, req, http.StatusOK, roots)
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} else {
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out.Header().Set("Allow", "GET, HEAD, PUT, POST")
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apiSendObj(out, req, http.StatusMethodNotAllowed, nil)
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}
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})
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listener, err := createNamedSocketListener(basePath, "apisocket")
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if err != nil {
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return nil, err
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}
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httpServer := &http.Server{
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MaxHeaderBytes: 4096,
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Handler: smux,
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IdleTimeout: 10 * time.Second,
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ReadTimeout: 10 * time.Second,
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WriteTimeout: 600 * time.Second,
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}
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httpServer.SetKeepAlivesEnabled(true)
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go func() {
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httpServer.Serve(listener)
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listener.Close()
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}()
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return httpServer, nil
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}
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