Add files via upload

2026-07-16 08:57:30 +02:00 · 2026-07-13 19:08:57 +08:00
parent 8ea0ee4f1b
commit e5a4703e91
2 changed files with 195 additions and 0 deletions
@@ -0,0 +1,192 @@
+package robot
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"cyberstrike-ai/internal/config"
+
+	"github.com/bwmarrin/discordgo"
+	lark "github.com/larksuite/oapi-sdk-go/v3"
+	larkim "github.com/larksuite/oapi-sdk-go/v3/service/im/v1"
+	"github.com/slack-go/slack"
+)
+
+// SendProactive sends a message without an inbound event. Platforms whose
+// reply credentials are event-scoped deliberately return an error instead of
+// pretending delivery succeeded.
+func SendProactive(ctx context.Context, cfg config.RobotsConfig, platform, externalUserID, message string) error {
+	platform = strings.ToLower(strings.TrimSpace(platform))
+	userID := robotIdentityUserPart(externalUserID)
+	if userID == "" {
+		return fmt.Errorf("invalid robot recipient")
+	}
+	switch platform {
+	case "telegram":
+		if !cfg.Telegram.Enabled || strings.TrimSpace(cfg.Telegram.BotToken) == "" {
+			return fmt.Errorf("telegram is not configured")
+		}
+		id, err := strconv.ParseInt(userID, 10, 64)
+		if err != nil {
+			return fmt.Errorf("invalid telegram user id: %w", err)
+		}
+		return telegramSendReply(ctx, nilSafeHTTPClient(), strings.TrimSpace(cfg.Telegram.BotToken), id, message)
+	case "slack":
+		if !cfg.Slack.Enabled || strings.TrimSpace(cfg.Slack.BotToken) == "" {
+			return fmt.Errorf("slack is not configured")
+		}
+		api := slack.New(strings.TrimSpace(cfg.Slack.BotToken))
+		channel, _, _, err := api.OpenConversationContext(ctx, &slack.OpenConversationParameters{Users: []string{userID}})
+		if err != nil {
+			return err
+		}
+		for _, chunk := range splitTextChunks(message, slackMaxMessageRunes) {
+			if _, _, err = api.PostMessageContext(ctx, channel.ID, slack.MsgOptionText(chunk, false)); err != nil {
+				return err
+			}
+		}
+		return nil
+	case "discord":
+		if !cfg.Discord.Enabled || strings.TrimSpace(cfg.Discord.BotToken) == "" {
+			return fmt.Errorf("discord is not configured")
+		}
+		token := strings.TrimSpace(cfg.Discord.BotToken)
+		if !strings.HasPrefix(token, "Bot ") {
+			token = "Bot " + token
+		}
+		session, err := discordgo.New(token)
+		if err != nil {
+			return err
+		}
+		channel, err := session.UserChannelCreate(userID)
+		if err != nil {
+			return err
+		}
+		for _, chunk := range splitTextChunks(message, discordMaxMessageRunes) {
+			if _, err = session.ChannelMessageSend(channel.ID, chunk); err != nil {
+				return err
+			}
+		}
+		return nil
+	case "wecom":
+		return sendWecomProactive(ctx, cfg.Wecom, userID, message)
+	case "lark":
+		return sendLarkProactive(ctx, cfg.Lark, externalUserID, message)
+	default:
+		return fmt.Errorf("platform %s does not support proactive alerts yet", platform)
+	}
+}
+
+func SupportsProactive(platform string) bool {
+	switch strings.ToLower(strings.TrimSpace(platform)) {
+	case "telegram", "slack", "discord", "wecom", "lark":
+		return true
+	default:
+		return false
+	}
+}
+
+func nilSafeHTTPClient() *http.Client { return &http.Client{Timeout: 15 * time.Second} }
+
+func sendWecomProactive(ctx context.Context, cfg config.RobotWecomConfig, userID, message string) error {
+	if !cfg.Enabled || strings.TrimSpace(cfg.CorpID) == "" || strings.TrimSpace(cfg.Secret) == "" || cfg.AgentID == 0 {
+		return fmt.Errorf("wecom proactive API is not configured")
+	}
+	tokenURL := "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=" + cfg.CorpID + "&corpsecret=" + cfg.Secret
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, tokenURL, nil)
+	if err != nil {
+		return err
+	}
+	resp, err := nilSafeHTTPClient().Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	var tokenResp struct {
+		ErrCode     int    `json:"errcode"`
+		ErrMsg      string `json:"errmsg"`
+		AccessToken string `json:"access_token"`
+	}
+	if err := json.Unmarshal(body, &tokenResp); err != nil {
+		return err
+	}
+	if tokenResp.ErrCode != 0 || tokenResp.AccessToken == "" {
+		return fmt.Errorf("wecom token: %s", tokenResp.ErrMsg)
+	}
+	payload, _ := json.Marshal(map[string]interface{}{
+		"touser": userID, "msgtype": "text", "agentid": cfg.AgentID,
+		"text": map[string]string{"content": message}, "safe": 0,
+	})
+	sendReq, err := http.NewRequestWithContext(ctx, http.MethodPost, "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token="+tokenResp.AccessToken, bytes.NewReader(payload))
+	if err != nil {
+		return err
+	}
+	sendReq.Header.Set("Content-Type", "application/json")
+	sendResp, err := nilSafeHTTPClient().Do(sendReq)
+	if err != nil {
+		return err
+	}
+	defer sendResp.Body.Close()
+	result, _ := io.ReadAll(sendResp.Body)
+	var parsed struct {
+		ErrCode int    `json:"errcode"`
+		ErrMsg  string `json:"errmsg"`
+	}
+	if err := json.Unmarshal(result, &parsed); err != nil {
+		return err
+	}
+	if parsed.ErrCode != 0 {
+		return fmt.Errorf("wecom send: %s", parsed.ErrMsg)
+	}
+	return nil
+}
+
+func sendLarkProactive(ctx context.Context, cfg config.RobotLarkConfig, identity, message string) error {
+	if !cfg.Enabled || strings.TrimSpace(cfg.AppID) == "" || strings.TrimSpace(cfg.AppSecret) == "" {
+		return fmt.Errorf("lark is not configured")
+	}
+	receiveIDType, receiveID := "user_id", robotIdentityUserPart(identity)
+	if idx := strings.LastIndex(identity, "|o:"); idx >= 0 {
+		receiveIDType, receiveID = "open_id", strings.TrimSpace(identity[idx+3:])
+	}
+	if idx := strings.LastIndex(identity, "|n:"); idx >= 0 {
+		receiveIDType, receiveID = "union_id", strings.TrimSpace(identity[idx+3:])
+	}
+	if receiveID == "" {
+		return fmt.Errorf("invalid lark recipient")
+	}
+	content, _ := json.Marshal(larkTextContent{Text: message})
+	client := lark.NewClient(cfg.AppID, cfg.AppSecret)
+	resp, err := client.Im.Message.Create(ctx, larkim.NewCreateMessageReqBuilder().
+		ReceiveIdType(receiveIDType).
+		Body(larkim.NewCreateMessageReqBodyBuilder().ReceiveId(receiveID).MsgType(larkim.MsgTypeText).Content(string(content)).Build()).Build())
+	if err != nil {
+		return err
+	}
+	if resp == nil || !resp.Success() {
+		return fmt.Errorf("lark send failed")
+	}
+	return nil
+}
+
+func robotIdentityUserPart(identity string) string {
+	identity = strings.TrimSpace(identity)
+	if i := strings.LastIndex(identity, "|u:"); i >= 0 {
+		return strings.TrimSpace(identity[i+3:])
+	}
+	if strings.HasPrefix(identity, "u:") {
+		return strings.TrimSpace(identity[2:])
+	}
+	return identity
+}