perma blacklist functionality, temp banning not working

config watcher, restart server on change
2024-11-23 17:07:13 +00:00 · 2024-08-15 11:00:43 -04:00 · 2024-08-09 16:22:27 -04:00
10 changed files with 237 additions and 40 deletions
--- a/app/views/index.html
+++ b/app/views/index.html
@ -1,17 +1,6 @@
 {{define "view"}}
 <main class="flex flex-col items-center justify-center p-8">
  <div class="mb-4">You are now viewing the {{.Title}}</div>
  <!--<h2>Top Ten Most Recent Events</h2>
  <ul>
    {{range .Events}}
    <li>
      <strong>ID:</strong> {{.ID}}<br />
      <strong>Content:</strong> {{.Content}}<br />
      <strong>Created At:</strong> {{.CreatedAt}}<br />
      <strong>PubKey:</strong> {{.PubKey}}
    </li>
    {{end}}
  </ul>-->
  <button
    hx-get="/import-events"
    hx-swap="outerHTML"
--- a/app/views/templates/layout.html
+++ b/app/views/templates/layout.html
@ -1,6 +1,6 @@
 {{define "layout"}}
 <!DOCTYPE html>
-<html lang="en" data-theme="{{.Theme}}">
+<html lang="en" data-theme="">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
--- a/config/types/blacklistConfig.go
+++ b/config/types/blacklistConfig.go
@ -0,0 +1,11 @@
 package config
 type BlacklistConfig struct {
 	Enabled                   bool     `yaml:"enabled"`
 	PermanentBanWords         []string `yaml:"permanent_ban_words"`
 	TempBanWords              []string `yaml:"temp_ban_words"`
 	MaxTempBans               int      `yaml:"max_temp_bans"`
 	TempBanDuration           int      `yaml:"temp_ban_duration"`
 	PermanentBlacklistPubkeys []string `yaml:"permanent_blacklist_pubkeys"`
 	PermanentBlacklistNpubs   []string `yaml:"permanent_blacklist_npubs"`
 }
--- a/config/types/serverConfig.go
+++ b/config/types/serverConfig.go
@ -17,4 +17,5 @@ type ServerConfig struct {
 	PubkeyWhitelist PubkeyWhitelistConfig `yaml:"pubkey_whitelist"`
 	KindWhitelist   KindWhitelistConfig   `yaml:"kind_whitelist"`
 	DomainWhitelist DomainWhitelistConfig `yaml:"domain_whitelist"`
 	Blacklist       BlacklistConfig       `yaml:"blacklist"`
 }
--- a/go.mod
+++ b/go.mod
@ -12,6 +12,7 @@ require (
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	golang.org/x/sys v0.22.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 )
@ -31,4 +32,5 @@ require (
 	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/time v0.5.0
 	gopkg.in/fsnotify.v1 v1.4.7
 )
--- a/go.sum
+++ b/go.sum
@ -21,6 +21,7 @@ github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK
 github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
@ -82,6 +83,8 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
 golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@ -99,6 +102,7 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
--- a/main.go
+++ b/main.go
@ -11,6 +11,10 @@ import (
 	"grain/server/utils"
 	"log"
 	"net/http"
 	"os"
 	"os/signal"
 	"sync"
 	"syscall"
 	"time"
 	"golang.org/x/net/websocket"
@ -20,28 +24,51 @@ func main() {
 	utils.EnsureFileExists("config.yml", "app/static/examples/config.example.yml")
 	utils.EnsureFileExists("relay_metadata.json", "app/static/examples/relay_metadata.example.json")
-	cfg, err := config.LoadConfig("config.yml")
+	restartChan := make(chan struct{})
-	if err != nil {
+	go utils.WatchConfigFile("config.yml", restartChan)
-		log.Fatal("Error loading config: ", err)
+
 	signalChan := make(chan os.Signal, 1)
 	signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
 	var wg sync.WaitGroup
 	for {
 		wg.Add(1)
 		cfg, err := config.LoadConfig("config.yml")
 		if err != nil {
 			log.Fatal("Error loading config: ", err)
 		}
 		client, err := db.InitDB(cfg)
 		if err != nil {
 			log.Fatal("Error initializing database: ", err)
 		}
 		config.SetupRateLimiter(cfg)
 		config.SetupSizeLimiter(cfg)
 		err = utils.LoadRelayMetadataJSON()
 		if err != nil {
 			log.Fatal("Failed to load relay metadata: ", err)
 		}
 		mux := setupRoutes()
 		server := startServer(cfg, mux, &wg)
 		select {
 		case <-restartChan:
 			log.Println("Restarting server...")
 			server.Close()
 			db.DisconnectDB(client)
 			wg.Wait()              // Wait for the server to fully shut down before restarting
 			time.Sleep(3 * time.Second) // Add a delay before restarting
 		case <-signalChan:
 			log.Println("Shutting down server...")
 			server.Close()
 			db.DisconnectDB(client)
 			wg.Wait() // Wait for the server to fully shut down before exiting
 			return
 		}
 	}
 	client, err := db.InitDB(cfg)
 	if err != nil {
 		log.Fatal("Error initializing database: ", err)
 	}
 	defer db.DisconnectDB(client)
 	config.SetupRateLimiter(cfg)
 	config.SetupSizeLimiter(cfg)
 	err = utils.LoadRelayMetadataJSON()
 	if err != nil {
 		log.Fatal("Failed to load relay metadata: ", err)
 	}
 	mux := setupRoutes()
 	startServer(cfg, mux)
 }
 func setupRoutes() *http.ServeMux {
@ -56,7 +83,7 @@ func setupRoutes() *http.ServeMux {
 	return mux
 }
-func startServer(config *configTypes.ServerConfig, mux *http.ServeMux) {
+func startServer(config *configTypes.ServerConfig, mux *http.ServeMux, wg *sync.WaitGroup) *http.Server {
 	server := &http.Server{
 		Addr:         config.Server.Port,
 		Handler:      mux,
@ -64,11 +91,16 @@ func startServer(config *configTypes.ServerConfig, mux *http.ServeMux) {
 		WriteTimeout: time.Duration(config.Server.WriteTimeout) * time.Second,
 		IdleTimeout:  time.Duration(config.Server.IdleTimeout) * time.Second,
 	}
-	fmt.Printf("Server is running on http://localhost%s\n", config.Server.Port)
+
-	err := server.ListenAndServe()
+	go func() {
-	if err != nil {
+		defer wg.Done() // Notify that the server is done shutting down
-		fmt.Println("Error starting server:", err)
+		fmt.Printf("Server is running on http://localhost%s\n", config.Server.Port)
-	}
+		err := server.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
 			fmt.Println("Error starting server:", err)
 		}
 	}()
 	return server
 }
 var wsServer = &websocket.Server{
--- a/server/handlers/event.go
+++ b/server/handlers/event.go
@ -84,6 +84,13 @@ func HandleKind(ctx context.Context, evt relay.Event, ws *websocket.Conn, eventS
 		return
 	}
 	// Check against manual blacklist
 	blacklisted, msg := utils.CheckBlacklist(evt.PubKey, evt.Content)
 	if blacklisted {
 		response.SendOK(ws, evt.ID, false, msg)
 		return
 	}
 	category := determineCategory(evt.Kind)
 	if allowed, msg := rateLimiter.AllowEvent(evt.Kind, category); !allowed {
--- a/server/utils/checkBlacklist.go
+++ b/server/utils/checkBlacklist.go
@ -0,0 +1,99 @@
 package utils
 import (
 	"fmt"
 	"grain/config"
 	cfg "grain/config/types"
 	"os"
 	"strings"
 	"gopkg.in/yaml.v2"
 )
 // CheckBlacklist checks if a pubkey is in the blacklist based on event content
 func CheckBlacklist(pubkey, eventContent string) (bool, string) {
 	cfg := config.GetConfig().Blacklist
 	if !cfg.Enabled {
 		return false, ""
 	}
 	// Check for permanent blacklist by pubkey or npub
 	if isPubKeyPermanentlyBlacklisted(pubkey) {
 		return true, fmt.Sprintf("pubkey %s is permanently blacklisted", pubkey)
 	}
 	// Check for permanent ban based on wordlist
 	for _, word := range cfg.PermanentBanWords {
 		if strings.Contains(eventContent, word) {
 			// Permanently ban the pubkey
 			err := AddToPermanentBlacklist(pubkey)
 			if err != nil {
 				return true, fmt.Sprintf("pubkey %s is permanently banned and failed to save: %v", pubkey, err)
 			}
 			return true, fmt.Sprintf("pubkey %s is permanently banned for containing forbidden words", pubkey)
 		}
 	}
 	return false, ""
 }
 func isPubKeyPermanentlyBlacklisted(pubKey string) bool {
 	cfg := config.GetConfig().Blacklist
 	if !cfg.Enabled {
 		return false
 	}
 	// Check pubkeys
 	for _, blacklistedKey := range cfg.PermanentBlacklistPubkeys {
 		if pubKey == blacklistedKey {
 			return true
 		}
 	}
 	// Check npubs
 	for _, npub := range cfg.PermanentBlacklistNpubs {
 		decodedPubKey, err := DecodeNpub(npub)
 		if err != nil {
 			fmt.Println("Error decoding npub:", err)
 			continue
 		}
 		if pubKey == decodedPubKey {
 			return true
 		}
 	}
 	return false
 }
 func AddToPermanentBlacklist(pubkey string) error {
 	cfg := config.GetConfig().Blacklist
 	// Check if already blacklisted
 	if isPubKeyPermanentlyBlacklisted(pubkey) {
 		return fmt.Errorf("pubkey %s is already in the permanent blacklist", pubkey)
 	}
 	// Add pubkey to the blacklist
 	cfg.PermanentBlacklistPubkeys = append(cfg.PermanentBlacklistPubkeys, pubkey)
 	// Persist changes to config.yml
 	return saveBlacklistConfig(cfg)
 }
 func saveBlacklistConfig(blacklistConfig cfg.BlacklistConfig) error {
 	cfg := config.GetConfig()
 	cfg.Blacklist = blacklistConfig
 	data, err := yaml.Marshal(cfg)
 	if err != nil {
 		return fmt.Errorf("failed to marshal config: %v", err)
 	}
 	err = os.WriteFile("config.yml", data, 0644)
 	if err != nil {
 		return fmt.Errorf("failed to write config to file: %v", err)
 	}
 	return nil
 }
--- a/server/utils/watchConfig.go
+++ b/server/utils/watchConfig.go
@ -0,0 +1,52 @@
 package utils
 import (
 	"fmt"
 	"log"
 	"time"
 	"gopkg.in/fsnotify.v1"
 )
 func WatchConfigFile(filePath string, restartChan chan<- struct{}) {
 	watcher, err := fsnotify.NewWatcher()
 	if err != nil {
 		log.Fatal("Error creating file watcher:", err)
 	}
 	defer watcher.Close()
 	err = watcher.Add(filePath)
 	if err != nil {
 		log.Fatal("Error adding file to watcher:", err)
 	}
 	var debounceTimer *time.Timer
 	debounceDuration := 1 * time.Second // Adjust this duration as needed
 	for {
 		select {
 		case event, ok := <-watcher.Events:
 			if !ok {
 				return
 			}
 			if event.Op&fsnotify.Write == fsnotify.Write {
 				if debounceTimer != nil {
 					debounceTimer.Stop() // Cancel the previous timer
 				}
 				debounceTimer = time.AfterFunc(debounceDuration, func() {
 					fmt.Println("Config file modified, restarting server...")
 					select {
 					case restartChan <- struct{}{}:
 					default:
 						// Skip sending restart signal if there's already one in the channel
 					}
 				})
 			}
 		case err, ok := <-watcher.Errors:
 			if !ok {
 				return
 			}
 			log.Println("Error watching file:", err)
 		}
 	}
 }
Author	SHA1	Message	Date
0ceanSlim	39436b564e	perma blacklist functionality, temp banning not working	2024-08-15 11:00:43 -04:00
0ceanSlim	22729612ff	config watcher, restart server on change	2024-08-09 16:22:27 -04:00