Checkpoint

.env

@@ -0,0 +1,3 @@
+KDOORPI_API_ALLOWED=http://127.0.0.1:3333/allowed
+KDOORPI_API_LONGPOLL=http://127.0.0.1:3333/longpoll
+KDOORPI_API_KEY=keykey

go.mod

@@ -3,6 +3,7 @@ module godoor
 go 1.18
 
 require (
+	github.com/joho/godotenv v1.5.1 // indirect
 	github.com/warthog618/gpiod v0.8.0 // indirect
 	golang.org/x/crypto v0.0.0-20220331220935-ae2d96664a29 // indirect
 	golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect

go.sum

@@ -1,3 +1,5 @@
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/warthog618/gpiod v0.8.0 h1:qxH9XVvWHpTxzWFSndBcujFyNH5zVRzHM63tcmm85o4=
 github.com/warthog618/gpiod v0.8.0/go.mod h1:a7Csa+IJtDBZ39++zC/6Srjo01qWejt/5velrDWuNkY=
 golang.org/x/crypto v0.0.0-20220331220935-ae2d96664a29 h1:tkVvjkPTB7pnW3jnid7kNyAMPVWllTNOf/qKDze4p9o=

godoor.go

@@ -1,10 +1,15 @@
 package main
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
+	"github.com/joho/godotenv"
 	"io"
 	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
 )
 import "time"
 
@@ -17,27 +22,91 @@ type card struct {
 	UidHash string `json:"uid_hash"`
 }
 
-type cardToken struct {
+type cardList struct {
+	AllowedUids []struct {
 		Token card `json:"token"`
+	} `json:"allowed_uids"`
 }
 
-type cardList struct {
+type simpleUids struct {
-	AllowedUids []cardToken `json:"allowed_uids"`
+	tokens []string
 }
 
 type ValidUids map[string]bool // bool has no meaning
 
+type Config struct {
+	door     string
+	uid_salt string
+	api      struct {
+		allowed  string
+		longpoll string
+		swipe    string
+		key      string
+	}
+}
+
+var config Config
+
 func main() {
 
-	wiegand := WiegandSetup(wiegand_a, wiegand_b, wiegand_bit_timeout, solenoid)
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer cancel()
 
-	client := http.Client{}
+	godotenv.Load()
-	req, err := http.NewRequest(http.MethodGet, "urlrul", nil)
+
+	config.door = os.Getenv("KDOORPI_DOOR")
+	config.api.allowed = os.Getenv("KDOORPI_API_ALLOWED")
+	config.api.longpoll = os.Getenv("KDOORPI_API_LONGPOLL")
+	config.api.swipe = os.Getenv("KDOORPI_API_SWIPE")
+	config.api.key = os.Getenv("KDOORPI_API_KEY")
+	config.uid_salt = os.Getenv("KDOORPI_UID_SALT")
+
+	//wiegand := WiegandSetup(wiegand_a, wiegand_b, wiegand_bit_timeout, solenoid)
+
+	http.DefaultClient.Timeout = 60
+
+	reloadTokens()
+
+	//go wiegand.cardRunner(validUids)
+
+	waitEvents()
+
+	fmt.Printf("Sleeping\n")
+
+	<-ctx.Done()
+	fmt.Printf("Cleanup\n")
+
+	// cleanup
+}
+
+func waitEvents() {
+	req, err := http.NewRequest(http.MethodGet, config.api.longpoll, nil)
 	if err != nil {
 		panic(err)
 	}
-	req.Header.Add("KEY", "keykey")
+	req.Header.Add("KEY", config.api.key)
-	resp, err := client.Do(req)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Printf("%v\n", resp)
+
+	_, err = io.ReadAll(resp.Body)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%v\n", resp)
+
+}
+
+func reloadTokens() {
+	req, err := http.NewRequest(http.MethodGet, config.api.allowed, nil)
+	if err != nil {
+		panic(err)
+	}
+	req.Header.Add("KEY", config.api.key)
+	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		panic(err)
 	}
@@ -60,13 +129,4 @@ func main() {
 		fmt.Printf("%d: %+v\n", i, val.Token.UidHash)
 		validUids[val.Token.UidHash] = false
 	}
-
-	go wiegand.cardRunner(validUids)
-
-	fmt.Printf("Sleeping\n")
-
-	for {
-		time.Sleep(time.Second)
-		fmt.Printf(".")
-	}
 }

godoor_server/godoor_server.go

@@ -0,0 +1,118 @@
+// really stupid test door server
+
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+type DoorBoyServer struct {
+	longPollers map[string]chan string
+}
+
+type card struct {
+	UidHash string `json:"uid_hash"`
+}
+
+type cardToken struct {
+	Token card `json:"token"`
+}
+
+type cardList struct {
+	AllowedUids []cardToken `json:"allowed_uids"`
+}
+
+func getRoot(w http.ResponseWriter, r *http.Request) {
+	fmt.Printf("got / request\n")
+	io.WriteString(w, "This is my website!\n")
+}
+
+func getAllowed(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	keys := cardList{
+		AllowedUids: []cardToken{
+			{card{UidHash: "0a0b0c0d0e0f"}},
+			{card{UidHash: "112233445566"}},
+			{card{UidHash: "aabbccddeeff"}},
+		},
+	}
+	respJson, _ := json.Marshal(keys)
+	_, err := w.Write(respJson)
+	if err != nil {
+		return
+	}
+}
+
+func writeAndFlush(writer http.ResponseWriter, buffer []byte) error {
+	_, err := writer.Write(buffer)
+	if err != nil {
+		return err
+	}
+	if f, ok := writer.(http.Flusher); ok {
+		f.Flush()
+	}
+	return nil
+}
+
+func (doorboyserver *DoorBoyServer) getLongPoll(w http.ResponseWriter, r *http.Request) {
+	err := writeAndFlush(w, []byte("data: response-generator-started\n\n"))
+	if err != nil {
+		return
+	}
+	events := make(chan string)
+	doorboyserver.longPollers[r.RemoteAddr] = events
+	err = writeAndFlush(w, []byte("data: watch-stream-opened\n\n"))
+	if err != nil {
+		delete(doorboyserver.longPollers, r.RemoteAddr)
+		return
+	}
+	d := <-events // get door open event
+	_, err = w.Write([]byte("data: "))
+	if err != nil {
+		delete(doorboyserver.longPollers, r.RemoteAddr)
+		return
+	}
+	_, err = w.Write([]byte(d))
+	if err != nil {
+		delete(doorboyserver.longPollers, r.RemoteAddr)
+		return
+	}
+	err = writeAndFlush(w, []byte("\n\n"))
+	if err != nil {
+		delete(doorboyserver.longPollers, r.RemoteAddr)
+		return
+	}
+	delete(doorboyserver.longPollers, r.RemoteAddr)
+
+}
+
+func (doobserver *DoorBoyServer) postOpenDoor(w http.ResponseWriter, r *http.Request) {
+	fmt.Println("longPollers:")
+	for key, value := range doobserver.longPollers {
+		fmt.Println(" Key:", key, "Value:", value)
+		value <- "workshop"
+	}
+	w.Write([]byte("OK"))
+}
+
+func main() {
+	doorboyserver := DoorBoyServer{longPollers: map[string]chan string{}}
+	http.HandleFunc("/", getRoot)
+	http.HandleFunc("/allowed", getAllowed)
+	http.HandleFunc("/longpoll", doorboyserver.getLongPoll)
+	http.HandleFunc("/open", doorboyserver.postOpenDoor)
+
+	err := http.ListenAndServe(":3333", nil)
+
+	if errors.Is(err, http.ErrServerClosed) {
+		fmt.Printf("server closed\n")
+	} else if err != nil {
+		fmt.Printf("error starting server: %s\n", err)
+		os.Exit(1)
+	}
+}