add anti_abuse plugin (#392)

add anti_abuse plugin

main.go

@@ -24,8 +24,8 @@ import (
 	//                      vvvvvvv高优先级区vvvvvvv                      //
 	//                          vvvvvvvvvvvvvv                          //
 	//                               vvvv                               //
-
-	_ "github.com/FloatTech/ZeroBot-Plugin/plugin/chat" // 基础词库
+	_ "github.com/FloatTech/ZeroBot-Plugin/plugin/antiabuse" // 违禁词
+	_ "github.com/FloatTech/ZeroBot-Plugin/plugin/chat"      // 基础词库
 
 	_ "github.com/FloatTech/ZeroBot-Plugin/plugin/sleep_manage" // 统计睡眠时间
 

plugin/antiabuse/anti.go

@@ -0,0 +1,76 @@
+// Package antiabuse defines anti_abuse plugin ,support abuse words check and add/remove abuse words
+package antiabuse
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	fcext "github.com/FloatTech/floatbox/ctxext"
+	ctrl "github.com/FloatTech/zbpctrl"
+	"github.com/FloatTech/zbputils/control"
+	zero "github.com/wdvxdr1123/ZeroBot"
+	"github.com/wdvxdr1123/ZeroBot/message"
+)
+
+func init() {
+	engine := control.Register("anti_abuse", &ctrl.Options[*zero.Ctx]{
+		DisableOnDefault:  false,
+		Help:              "违禁词检测",
+		PrivateDataFolder: "anti_abuse",
+	})
+	onceRule := fcext.DoOnceOnSuccess(func(ctx *zero.Ctx) bool {
+		db.DBPath = engine.DataFolder() + "anti_abuse.db"
+		err := db.Open(time.Hour * 4)
+		if err != nil {
+			ctx.SendChain(message.Text("open db error: ", err))
+			return false
+		}
+		err = db.Create("banUser", &banUser{})
+		if err != nil {
+			ctx.SendChain(message.Text("create table error: ", err))
+			return false
+		}
+		err = db.Create("banWord", &banWord{})
+		if err != nil {
+			ctx.SendChain(message.Text("create table error: ", err))
+			return false
+		}
+		err = recoverUser()
+		if err != nil {
+			ctx.SendChain(message.Text("recover data error: ", err))
+			return false
+		}
+		err = recoverWord()
+		if err != nil {
+			ctx.SendChain(message.Text("recover data error: ", err))
+			return false
+		}
+		return true
+	})
+	engine.OnMessage(zero.OnlyGroup, onceRule, banRule)
+	engine.OnCommand("添加违禁词", zero.OnlyGroup, zero.AdminPermission, onceRule).Handle(
+		func(ctx *zero.Ctx) {
+			if err := insertWord(ctx.Event.GroupID, ctx.State["args"].(string)); err != nil {
+				ctx.SendChain(message.Text("add ban word error:", err))
+			}
+		})
+	engine.OnCommand("删除违禁词", zero.OnlyGroup, zero.AdminPermission, onceRule).Handle(
+		func(ctx *zero.Ctx) {
+			if err := deleteWord(ctx.Event.GroupID, ctx.State["args"].(string)); err != nil {
+				ctx.SendChain(message.Text("add ban word error:", err))
+			}
+		})
+	engine.OnCommand("查看违禁词", zero.OnlyGroup, onceRule).Handle(
+		func(ctx *zero.Ctx) {
+			gidPrefix := fmt.Sprintf("%d-", ctx.Event.GroupID)
+			var words []string
+			_ = wordSet.Iter(func(s string) error {
+				trueWord := strings.SplitN(s, gidPrefix, 1)[1]
+				words = append(words, trueWord)
+				return nil
+			})
+			ctx.SendChain(message.Text("本群违禁词有:\n", strings.Join(words, " |")))
+		})
+
+}

plugin/antiabuse/database.go

@@ -0,0 +1,75 @@
+package antiabuse
+
+import (
+	"fmt"
+	"time"
+
+	sqlite "github.com/FloatTech/sqlite"
+)
+
+var db = &sqlite.Sqlite{}
+
+type banUser struct {
+	UUID    string `db:"uuid"`
+	DueTime int64  `db:"due_time"`
+}
+
+func insertUser(gid, uid int64) error {
+	obj := &banUser{fmt.Sprintf("%d-%d", gid, uid), time.Now().Add(4 * time.Hour).UnixNano()}
+	return db.Insert("banUser", obj)
+}
+
+func deleteUser(gid, uid int64) error {
+	sql := fmt.Sprintf("WHERE uuid=%d-%d", gid, uid)
+	return db.Del("banUser", sql)
+}
+
+func recoverUser() error {
+	obj := &banUser{}
+	var uuids []string
+	err := db.FindFor("banUser", obj, "", func() error {
+		if time.Now().UnixNano() < obj.DueTime {
+			uuids = append(uuids, obj.UUID)
+		} else {
+			if err := db.Del("banUser", "WHERE uuid="+obj.UUID); err != nil {
+				return err
+			}
+		}
+		return nil
+	},
+	)
+	if err != nil {
+		return err
+	}
+	banSet.AddMany(uuids)
+	return nil
+}
+
+type banWord struct {
+	GroupWord string `db:"group_word"`
+}
+
+func insertWord(gid int64, word string) error {
+	obj := &banWord{fmt.Sprintf("%d-%s", gid, word)}
+	return db.Insert("banWord", obj)
+}
+
+func deleteWord(gid int64, word string) error {
+	sql := fmt.Sprintf("WHERE group_word = %d-%s", gid, word)
+	return db.Del("banWord", sql)
+}
+
+func recoverWord() error {
+	obj := &banWord{}
+	var groupWords []string
+	err := db.FindFor("banWord", obj, "", func() error {
+		groupWords = append(groupWords, obj.GroupWord)
+		return nil
+	},
+	)
+	if err != nil {
+		return err
+	}
+	wordSet.AddMany(groupWords)
+	return nil
+}

plugin/antiabuse/set.go

@@ -0,0 +1,57 @@
+package antiabuse
+
+import "sync"
+
+//Set defines HashSet structure
+type Set struct {
+	sync.RWMutex
+	m map[string]struct{}
+}
+
+var banSet = &Set{m: make(map[string]struct{})}
+var wordSet = &Set{m: make(map[string]struct{})}
+
+// Add adds element to Set
+func (s *Set) Add(key string) {
+	s.Lock()
+	defer s.Unlock()
+	s.m[key] = struct{}{}
+}
+
+// Include asserts element in Set
+func (s *Set) Include(key string) bool {
+	s.RLock()
+	defer s.RUnlock()
+	_, ok := s.m[key]
+	return ok
+}
+
+// Iter calls f when traversing Set
+func (s *Set) Iter(f func(string) error) error {
+	s.Lock()
+	defer s.Unlock()
+	var err error
+	for key := range s.m {
+		err = f(key)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Remove removes element from Set
+func (s *Set) Remove(key string) {
+	s.Lock()
+	defer s.Unlock()
+	delete(s.m, key)
+}
+
+// AddMany adds multiple elements to Set
+func (s *Set) AddMany(keys []string) {
+	s.Lock()
+	defer s.Unlock()
+	for _, k := range keys {
+		s.m[k] = struct{}{}
+	}
+}

plugin/antiabuse/utils.go

@@ -0,0 +1,44 @@
+package antiabuse
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	zero "github.com/wdvxdr1123/ZeroBot"
+	"github.com/wdvxdr1123/ZeroBot/message"
+)
+
+func banRule(ctx *zero.Ctx) bool {
+	gid := ctx.Event.GroupID
+	uid := ctx.Event.UserID
+	uuid := fmt.Sprintf("%d-%d", gid, uid)
+	if banSet.Include(uuid) {
+		return false
+	}
+	gidPrefix := fmt.Sprintf("%d-", ctx.Event.GroupID)
+	var words []string
+	_ = wordSet.Iter(func(s string) error {
+		trueWord := strings.SplitN(s, gidPrefix, 1)[1]
+		words = append(words, trueWord)
+		return nil
+	})
+	for _, word := range words {
+		if strings.Contains(ctx.MessageString(), word) {
+			if err := insertUser(gid, uid); err != nil {
+				ctx.SendChain(message.Text("ban error: ", err))
+			}
+			banSet.Add(uuid)
+			ctx.SetGroupBan(gid, uid, 4*3600)
+			time.AfterFunc(4*time.Hour, func() {
+				banSet.Remove(uuid)
+				if err := deleteUser(gid, uid); err != nil {
+					ctx.SendChain(message.Text("ban error: ", err))
+				}
+			})
+			ctx.SendChain(message.Text("检测到违禁词，已封禁/屏蔽4小时"))
+			return false
+		}
+	}
+	return true
+}