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https://github.com/cwinfo/yggdrasil-go.git
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Start JSON-ifying the admin socket
This commit is contained in:
Neil Alexander
parent
89b7be1409
commit
a6ef7166ea
@ -2,8 +2,10 @@ package yggdrasil
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import "net"
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import "os"
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import "bytes"
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// import "bytes"
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import "encoding/hex"
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import "encoding/json"
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import "errors"
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import "fmt"
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import "net/url"
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@ -22,45 +24,86 @@ type admin struct {
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handlers []admin_handlerInfo
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}
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type admin_info map[string]interface{}
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type admin_handlerInfo struct {
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name string // Checked against the first word of the api call
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args []string // List of human-readable argument names
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handler func(*[]byte, ...string) // First arg is pointer to the out slice, rest is args
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handler func(admin_info) (admin_info, error) // First is input map, second is output
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}
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func (a *admin) addHandler(name string, args []string, handler func(*[]byte, ...string)) {
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// Maps things like "IP", "port", "bucket", or "coords" onto strings
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type admin_pair struct {
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key string
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val interface{}
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}
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type admin_nodeInfo []admin_pair
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func (a *admin) addHandler(name string, args []string, handler func(admin_info) (admin_info, error)) {
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a.handlers = append(a.handlers, admin_handlerInfo{name, args, handler})
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}
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func (a *admin) init(c *Core, listenaddr string) {
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a.core = c
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a.listenaddr = listenaddr
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a.addHandler("help", nil, func(out *[]byte, _ ...string) {
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a.addHandler("help", nil, func(in admin_info) (admin_info, error) {
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handlers := make(map[string][]string)
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for _, handler := range a.handlers {
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tmp := append([]string{handler.name}, handler.args...)
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*out = append(*out, []byte(strings.Join(tmp, " "))...)
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*out = append(*out, "\n"...)
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handlers[handler.name] = handler.args
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}
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return admin_info{"handlers": handlers}, nil
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})
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// TODO? have other parts of the program call to add their own handlers
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a.addHandler("dot", nil, func(out *[]byte, _ ...string) {
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*out = a.getResponse_dot()
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a.addHandler("dot", nil, func(in admin_info) (admin_info, error) {
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return admin_info{"dot": string(a.getResponse_dot())}, nil
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})
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a.addHandler("getSelf", nil, func(out *[]byte, _ ...string) {
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*out = []byte(a.printInfos([]admin_nodeInfo{*a.getData_getSelf()}))
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a.addHandler("getSelf", nil, func(in admin_info) (admin_info, error) {
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return admin_info{"self": a.getData_getSelf().asMap()}, nil
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})
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a.addHandler("getPeers", nil, func(out *[]byte, _ ...string) {
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*out = []byte(a.printInfos(a.getData_getPeers()))
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a.addHandler("getPeers", nil, func(in admin_info) (admin_info, error) {
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sort := "ip"
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peers := make(admin_info)
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for _, peerdata := range a.getData_getPeers() {
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p := peerdata.asMap()
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so := fmt.Sprint(p[sort])
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peers[so] = p
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delete(peers[so].(map[string]interface{}), sort)
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}
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return admin_info{"peers": peers}, nil
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})
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a.addHandler("getSwitchPeers", nil, func(out *[]byte, _ ...string) {
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*out = []byte(a.printInfos(a.getData_getSwitchPeers()))
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a.addHandler("getSwitchPeers", nil, func(in admin_info) (admin_info, error) {
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sort := "port"
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switchpeers := make(admin_info)
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for _, s := range a.getData_getSwitchPeers() {
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p := s.asMap()
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so := fmt.Sprint(p[sort])
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switchpeers[so] = p
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delete(switchpeers[so].(map[string]interface{}), sort)
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}
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return admin_info{"switchpeers": switchpeers}, nil
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})
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a.addHandler("getDHT", nil, func(out *[]byte, _ ...string) {
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*out = []byte(a.printInfos(a.getData_getDHT()))
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a.addHandler("getDHT", nil, func(in admin_info) (admin_info, error) {
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sort := "ip"
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dht := make(admin_info)
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for _, d := range a.getData_getDHT() {
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p := d.asMap()
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so := fmt.Sprint(p[sort])
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dht[so] = p
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delete(dht[so].(map[string]interface{}), sort)
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}
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return admin_info{"dht": dht}, nil
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})
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a.addHandler("getSessions", nil, func(out *[]byte, _ ...string) {
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*out = []byte(a.printInfos(a.getData_getSessions()))
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a.addHandler("getSessions", nil, func(in admin_info) (admin_info, error) {
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sort := "ip"
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sessions := make(admin_info)
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for _, s := range a.getData_getSessions() {
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p := s.asMap()
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so := fmt.Sprint(p[sort])
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sessions[so] = p
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delete(sessions[so].(map[string]interface{}), sort)
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}
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return admin_info{"sessions": sessions}, nil
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})
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/*
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a.addHandler("addPeer", []string{"<proto://address:port>"}, func(out *[]byte, saddr ...string) {
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if a.addPeer(saddr[0]) == nil {
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*out = []byte("Adding peer: " + saddr[0] + "\n")
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@ -89,7 +132,7 @@ func (a *admin) init(c *Core, listenaddr string) {
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info = admin_nodeInfo{
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{"Interface name", a.core.tun.iface.Name()},
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{"TAP mode", strconv.FormatBool(a.core.tun.iface.IsTAP())},
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{"MTU", strconv.Itoa(a.core.tun.mtu)},
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{"mtu", strconv.Itoa(a.core.tun.mtu)},
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}
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*out = []byte(a.printInfos([]admin_nodeInfo{info}))
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})
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@ -120,7 +163,7 @@ func (a *admin) init(c *Core, listenaddr string) {
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info := admin_nodeInfo{
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{"Interface name", ifparams[0]},
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{"TAP mode", strconv.FormatBool(iftapmode)},
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{"MTU", strconv.Itoa(ifmtu)},
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{"mtu", strconv.Itoa(ifmtu)},
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}
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*out = []byte(a.printInfos([]admin_nodeInfo{info}))
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}
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@ -141,7 +184,7 @@ func (a *admin) init(c *Core, listenaddr string) {
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} else {
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*out = []byte("Failed to remove key: " + sport[0] + "\n")
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}
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})
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})*/
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go a.listen()
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}
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@ -162,49 +205,69 @@ func (a *admin) listen() {
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}
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func (a *admin) handleRequest(conn net.Conn) {
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buf := make([]byte, 1024)
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_, err := conn.Read(buf)
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if err != nil {
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a.core.log.Printf("Admin socket failed to read: %v", err)
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conn.Close()
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defer conn.Close()
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decoder := json.NewDecoder(conn)
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encoder := json.NewEncoder(conn)
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encoder.SetIndent("", " ")
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recv := make(admin_info)
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send := make(admin_info)
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for {
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if err := decoder.Decode(&recv); err != nil {
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fmt.Println("Admin socket JSON decode error:", err)
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return
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}
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var out []byte
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buf = bytes.Trim(buf, "\x00\r\n\t")
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call := strings.Split(string(buf), " ")
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var cmd string
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var args []string
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if len(call) > 0 {
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cmd = call[0]
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args = call[1:]
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}
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done := false
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handlers:
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for _, handler := range a.handlers {
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if cmd == handler.name {
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handler.handler(&out, args...)
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done = true
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if recv["request"] == handler.name {
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// Check that we have all the required arguments
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for _, arg := range handler.args {
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// An argument in <pointy brackets> is optional and not required,
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// so we can safely ignore those
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if strings.HasPrefix(arg, "<") && strings.HasSuffix(arg, ">") {
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continue
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}
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// Check if the field is missing
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if _, ok := recv[arg]; !ok {
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fmt.Println("Missing required argument", arg)
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send = admin_info{
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"error": "Missing field '" + arg + "'",
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"fields": handler.args,
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}
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break handlers
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}
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}
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// By this point we should have all the fields we need, so call
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// the handler
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response, err := handler.handler(recv)
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if err != nil {
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send = admin_info{
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"request": recv["request"],
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"error": err.Error(),
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}
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} else {
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send = admin_info{
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"request": recv["request"],
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"response": response,
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}
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}
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break
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}
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}
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if !done {
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out = []byte("I didn't understand that!\n")
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if err := encoder.Encode(&send); err != nil {
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fmt.Println("Admin socket JSON encode error:", err)
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return
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}
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_, err = conn.Write(out)
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if err != nil {
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a.core.log.Printf("Admin socket error: %v", err)
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return
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}
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conn.Close()
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}
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// Maps things like "IP", "port", "bucket", or "coords" onto strings
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type admin_pair struct {
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key string
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val string
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}
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type admin_nodeInfo []admin_pair
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func (n *admin_nodeInfo) asMap() map[string]string {
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m := make(map[string]string, len(*n))
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func (n *admin_nodeInfo) asMap() map[string]interface{} {
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m := make(map[string]interface{}, len(*n))
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for _, p := range *n {
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m[p.key] = p.val
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}
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@ -303,7 +366,7 @@ func (a *admin) getData_getSelf() *admin_nodeInfo {
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addr := a.core.router.addr
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coords := table.self.getCoords()
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self := admin_nodeInfo{
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{"IP", net.IP(addr[:]).String()},
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{"ip", net.IP(addr[:]).String()},
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{"coords", fmt.Sprint(coords)},
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}
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return &self
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@ -321,11 +384,11 @@ func (a *admin) getData_getPeers() []admin_nodeInfo {
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p := ports[port]
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addr := *address_addrForNodeID(getNodeID(&p.box))
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info := admin_nodeInfo{
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{"IP", net.IP(addr[:]).String()},
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{"port", fmt.Sprint(port)},
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{"ip", net.IP(addr[:]).String()},
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{"port", port},
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{"uptime", fmt.Sprint(time.Since(p.firstSeen))},
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{"bytesSent", fmt.Sprint(atomic.LoadUint64(&p.bytesSent))},
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{"bytesRecvd", fmt.Sprint(atomic.LoadUint64(&p.bytesRecvd))},
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{"bytes_sent", atomic.LoadUint64(&p.bytesSent)},
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{"bytes_recvd", atomic.LoadUint64(&p.bytesRecvd)},
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}
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peerInfos = append(peerInfos, info)
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}
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@ -344,9 +407,9 @@ func (a *admin) getData_getSwitchPeers() []admin_nodeInfo {
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addr := *address_addrForNodeID(getNodeID(&peer.box))
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coords := elem.locator.getCoords()
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info := admin_nodeInfo{
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{"IP", net.IP(addr[:]).String()},
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{"ip", net.IP(addr[:]).String()},
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{"coords", fmt.Sprint(coords)},
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{"port", fmt.Sprint(elem.port)},
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{"port", elem.port},
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}
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peerInfos = append(peerInfos, info)
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}
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@ -363,11 +426,11 @@ func (a *admin) getData_getDHT() []admin_nodeInfo {
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for _, v := range vs {
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addr := *address_addrForNodeID(v.getNodeID())
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info := admin_nodeInfo{
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{"IP", net.IP(addr[:]).String()},
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{"ip", net.IP(addr[:]).String()},
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{"coords", fmt.Sprint(v.coords)},
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{"bucket", fmt.Sprint(i)},
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{"peerOnly", fmt.Sprint(isPeer)},
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{"lastSeen", fmt.Sprint(now.Sub(v.recv))},
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{"bucket", i},
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{"peer_only", isPeer},
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{"last_seen", fmt.Sprint(now.Sub(v.recv))},
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}
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infos = append(infos, info)
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}
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@ -386,12 +449,12 @@ func (a *admin) getData_getSessions() []admin_nodeInfo {
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for _, sinfo := range a.core.sessions.sinfos {
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// TODO? skipped known but timed out sessions?
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info := admin_nodeInfo{
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{"IP", net.IP(sinfo.theirAddr[:]).String()},
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{"ip", net.IP(sinfo.theirAddr[:]).String()},
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{"coords", fmt.Sprint(sinfo.coords)},
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{"MTU", fmt.Sprint(sinfo.getMTU())},
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{"wasMTUFixed", fmt.Sprint(sinfo.wasMTUFixed)},
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{"bytesSent", fmt.Sprint(sinfo.bytesSent)},
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{"bytesRecvd", fmt.Sprint(sinfo.bytesRecvd)},
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{"mtu", sinfo.getMTU()},
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{"was_mtu_fixed", sinfo.wasMTUFixed},
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{"bytes_sent", sinfo.bytesSent},
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{"bytes_recvd", sinfo.bytesRecvd},
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}
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infos = append(infos, info)
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}
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@ -438,18 +501,18 @@ func (a *admin) getResponse_dot() []byte {
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sessions := a.getData_getSessions()
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// Map of coords onto IP
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m := make(map[string]string)
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m[self["coords"]] = self["IP"]
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m[self["coords"].(string)] = self["IP"].(string)
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for _, peer := range peers {
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p := peer.asMap()
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m[p["coords"]] = p["IP"]
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m[p["coords"].(string)] = p["IP"].(string)
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}
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for _, node := range dht {
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n := node.asMap()
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m[n["coords"]] = n["IP"]
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m[n["coords"].(string)] = n["IP"].(string)
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}
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for _, node := range sessions {
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n := node.asMap()
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m[n["coords"]] = n["IP"]
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m[n["coords"].(string)] = n["IP"].(string)
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}
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// Start building a tree from all known nodes
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