feat: 接入后台消息治理与登录审计

docs/sql/IM-后台消息与登录审计SQL.sql

@@ -0,0 +1,88 @@
+-- MySQL 8.0. Admin message governance and authentication audit tables.
+-- Execute this script in each tenant business database.
+
+CREATE TABLE IF NOT EXISTS im_user_login_logs (
+    id BIGINT NOT NULL AUTO_INCREMENT,
+    user_id BIGINT NOT NULL,
+    username VARCHAR(64) NOT NULL DEFAULT '',
+    account_type VARCHAR(24) NOT NULL DEFAULT '',
+    account_hash CHAR(64) NOT NULL DEFAULT '',
+    account_mask VARCHAR(128) NOT NULL DEFAULT '',
+    login_type VARCHAR(24) NOT NULL,
+    event_type VARCHAR(24) NOT NULL DEFAULT 'login',
+    session_id VARCHAR(96) NOT NULL DEFAULT '',
+    device_id VARCHAR(255) NOT NULL DEFAULT '',
+    platform VARCHAR(32) NOT NULL DEFAULT 'unknown',
+    app_version VARCHAR(32) NOT NULL DEFAULT '',
+    ip VARCHAR(64) NOT NULL DEFAULT '',
+    region VARCHAR(128) NOT NULL DEFAULT '',
+    user_agent VARCHAR(512) NOT NULL DEFAULT '',
+    risk_level VARCHAR(16) NOT NULL DEFAULT 'low',
+    request_id VARCHAR(64) NOT NULL DEFAULT '',
+    login_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    logout_at DATETIME(3) NULL,
+    metadata JSON NULL,
+    created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    PRIMARY KEY (id),
+    INDEX idx_im_user_login_user_time (user_id, login_at DESC, id DESC),
+    INDEX idx_im_user_login_ip_time (ip, login_at DESC, id DESC),
+    INDEX idx_im_user_login_device_time (device_id(64), login_at DESC),
+    INDEX idx_im_user_login_request (request_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
+
+CREATE TABLE IF NOT EXISTS im_login_failure_logs (
+    id BIGINT NOT NULL AUTO_INCREMENT,
+    user_id BIGINT NULL,
+    account_type VARCHAR(24) NOT NULL DEFAULT '',
+    account_hash CHAR(64) NOT NULL DEFAULT '',
+    account_mask VARCHAR(128) NOT NULL DEFAULT '',
+    failure_type VARCHAR(32) NOT NULL,
+    reason VARCHAR(96) NOT NULL DEFAULT '',
+    detail VARCHAR(500) NOT NULL DEFAULT '',
+    ip VARCHAR(64) NOT NULL DEFAULT '',
+    region VARCHAR(128) NOT NULL DEFAULT '',
+    device_id VARCHAR(255) NOT NULL DEFAULT '',
+    platform VARCHAR(32) NOT NULL DEFAULT 'unknown',
+    app_version VARCHAR(32) NOT NULL DEFAULT '',
+    user_agent VARCHAR(512) NOT NULL DEFAULT '',
+    risk_level VARCHAR(16) NOT NULL DEFAULT 'medium',
+    risk_action VARCHAR(24) NOT NULL DEFAULT 'audit_only',
+    request_id VARCHAR(64) NOT NULL DEFAULT '',
+    attempt_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    metadata JSON NULL,
+    created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    PRIMARY KEY (id),
+    INDEX idx_im_login_failure_account_time (account_hash, attempt_at DESC, id DESC),
+    INDEX idx_im_login_failure_user_time (user_id, attempt_at DESC, id DESC),
+    INDEX idx_im_login_failure_ip_time (ip, attempt_at DESC, id DESC),
+    INDEX idx_im_login_failure_type_time (failure_type, attempt_at DESC, id DESC),
+    INDEX idx_im_login_failure_request (request_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
+
+CREATE TABLE IF NOT EXISTS im_message_admin_actions (
+    id BIGINT NOT NULL AUTO_INCREMENT,
+    action_id VARCHAR(96) NOT NULL,
+    command_id VARCHAR(96) NOT NULL,
+    conversation_type VARCHAR(16) NOT NULL,
+    topic VARCHAR(64) NOT NULL,
+    seqid BIGINT NOT NULL,
+    sender_user_id BIGINT NULL,
+    action VARCHAR(16) NOT NULL,
+    action_status VARCHAR(16) NOT NULL DEFAULT 'pending',
+    reason VARCHAR(500) NOT NULL DEFAULT '',
+    actor_admin_id BIGINT NOT NULL DEFAULT 0,
+    request_id VARCHAR(64) NOT NULL DEFAULT '',
+    before_snapshot JSON NULL,
+    after_snapshot JSON NULL,
+    failure_reason VARCHAR(96) NOT NULL DEFAULT '',
+    failure_message VARCHAR(1000) NOT NULL DEFAULT '',
+    processed_at DATETIME(3) NULL,
+    created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+    updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
+    PRIMARY KEY (id),
+    UNIQUE INDEX uk_im_message_admin_action_id (action_id),
+    UNIQUE INDEX uk_im_message_admin_command (command_id),
+    INDEX idx_im_message_admin_target (conversation_type, topic, seqid, id DESC),
+    INDEX idx_im_message_admin_status (action_status, created_at, id),
+    INDEX idx_im_message_admin_actor (actor_admin_id, created_at DESC)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

server/auth_audit.go

@@ -0,0 +1,207 @@
+package main
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"net"
+	"strings"
+	"time"
+
+	"github.com/tinode/chat/server/auth"
+	"github.com/tinode/chat/server/logs"
+	"github.com/tinode/chat/server/store"
+	"github.com/tinode/chat/server/store/types"
+)
+
+func recordSessionLoginSuccess(s *Session, rec *auth.Rec, scheme, suppliedAccount, requestID string, at time.Time) {
+	if s == nil || rec == nil || rec.Uid.IsZero() || !s.tenantID.IsValid() {
+		return
+	}
+	username := ""
+	if user, err := store.Users.Get(s.tenantID, rec.Uid); err == nil && user != nil {
+		username = user.Username
+	}
+	accountType, account := loginAuditAccount(scheme, suppliedAccount, rec.Credential)
+	if account == "" {
+		accountType, account = classifyLoginAccount(username)
+	}
+	event := &types.LoginAuditEvent{
+		UserID: rec.Uid, Username: username, AccountType: accountType,
+		AccountHash: hashLoginAccount(account), AccountMask: maskLoginAccount(account),
+		LoginType: loginAuditType(scheme), EventType: "login", SessionID: truncateAuditValue(s.sid, 96),
+		DeviceID: truncateAuditValue(s.deviceID, 255), Platform: normalizeAuditPlatform(s.platf),
+		AppVersion: truncateAuditValue(versionToString(s.ver), 32), IP: sessionAuditIP(s.remoteAddr),
+		UserAgent: truncateAuditValue(s.userAgent, 512), RiskLevel: "low",
+		RequestID: truncateAuditValue(requestID, 64), LoginAt: at.UTC().Round(time.Millisecond),
+		Metadata: map[string]any{"auth_level": rec.AuthLevel.String(), "tenant_code": s.tenantCode},
+	}
+	if err := store.SecurityAudit.RecordLogin(s.tenantID, event); err != nil {
+		logs.Warn.Printf("login audit write failed tenant:%d uid:%s sid:%s err:%v", s.tenantID, rec.Uid, s.sid, err)
+	}
+}
+
+func recordSessionLoginFailure(s *Session, scheme string, secret []byte, rec *auth.Rec, requestID string, cause error, at time.Time) {
+	if s == nil || !s.tenantID.IsValid() {
+		return
+	}
+	suppliedAccount := ""
+	if strings.EqualFold(strings.TrimSpace(scheme), "basic") {
+		suppliedAccount = strings.SplitN(string(secret), ":", 2)[0]
+	}
+	credential := ""
+	uid := types.ZeroUid
+	if rec != nil {
+		credential = rec.Credential
+		uid = rec.Uid
+	}
+	accountType, account := loginAuditAccount(scheme, suppliedAccount, credential)
+	failureType, reason, riskLevel, riskAction := classifyLoginFailure(scheme, cause)
+	event := &types.LoginFailureEvent{
+		UserID: uid, AccountType: accountType, AccountHash: hashLoginAccount(account), AccountMask: maskLoginAccount(account),
+		FailureType: failureType, Reason: reason, Detail: truncateAuditValue(loginFailureDetail(cause), 500),
+		IP: sessionAuditIP(s.remoteAddr), DeviceID: truncateAuditValue(s.deviceID, 255), Platform: normalizeAuditPlatform(s.platf),
+		AppVersion: truncateAuditValue(versionToString(s.ver), 32), UserAgent: truncateAuditValue(s.userAgent, 512),
+		RiskLevel: riskLevel, RiskAction: riskAction, RequestID: truncateAuditValue(requestID, 64),
+		AttemptAt: at.UTC().Round(time.Millisecond), Metadata: map[string]any{"scheme": strings.TrimSpace(scheme), "tenant_code": s.tenantCode},
+	}
+	if err := store.SecurityAudit.RecordLoginFailure(s.tenantID, event); err != nil {
+		logs.Warn.Printf("login failure audit write failed tenant:%d sid:%s err:%v", s.tenantID, s.sid, err)
+	}
+}
+
+func loginAuditAccount(scheme, supplied, credential string) (string, string) {
+	if parts := strings.SplitN(strings.TrimSpace(credential), ":", 2); len(parts) == 2 && parts[1] != "" {
+		kind := strings.ToLower(strings.TrimSpace(parts[0]))
+		if kind == "tel" {
+			kind = "phone"
+		}
+		return kind, strings.TrimSpace(parts[1])
+	}
+	if strings.EqualFold(strings.TrimSpace(scheme), "basic") {
+		return classifyLoginAccount(supplied)
+	}
+	return "", ""
+}
+
+func classifyLoginAccount(account string) (string, string) {
+	account = strings.TrimSpace(account)
+	switch {
+	case account == "":
+		return "", ""
+	case strings.Contains(account, "@"):
+		return "email", account
+	case isPhoneLike(account):
+		return "phone", account
+	default:
+		return "username", account
+	}
+}
+
+func isPhoneLike(value string) bool {
+	digits := 0
+	for i, r := range value {
+		if r >= '0' && r <= '9' {
+			digits++
+			continue
+		}
+		if !(i == 0 && r == '+') {
+			return false
+		}
+	}
+	return digits >= 7
+}
+
+func maskLoginAccount(account string) string {
+	account = strings.TrimSpace(account)
+	if account == "" {
+		return ""
+	}
+	if at := strings.LastIndex(account, "@"); at > 0 {
+		return string([]rune(account[:at])[:1]) + "***" + account[at:]
+	}
+	runes := []rune(account)
+	if isPhoneLike(account) && len(runes) > 7 {
+		return string(runes[:3]) + "****" + string(runes[len(runes)-4:])
+	}
+	if len(runes) <= 2 {
+		return strings.Repeat("*", len(runes))
+	}
+	return string(runes[:1]) + strings.Repeat("*", len(runes)-2) + string(runes[len(runes)-1:])
+}
+
+func hashLoginAccount(account string) string {
+	account = strings.ToLower(strings.TrimSpace(account))
+	if account == "" {
+		return ""
+	}
+	sum := sha256.Sum256([]byte(account))
+	return hex.EncodeToString(sum[:])
+}
+
+func loginAuditType(scheme string) string {
+	switch strings.ToLower(strings.TrimSpace(scheme)) {
+	case "basic":
+		return "password"
+	case "token":
+		return "token_refresh"
+	case "code", "sms", "sms_code":
+		return "sms_code"
+	case "sso":
+		return "sso"
+	case "qr", "qr_code":
+		return "qr_code"
+	default:
+		return "password"
+	}
+}
+
+func classifyLoginFailure(scheme string, cause error) (failureType, reason, riskLevel, riskAction string) {
+	failureType, reason, riskLevel, riskAction = "password_error", "AUTH_FAILED", "medium", "audit_only"
+	detail := strings.ToLower(loginFailureDetail(cause))
+	switch {
+	case strings.Contains(detail, "rate") || strings.Contains(detail, "too many"):
+		return "rate_limited", "RATE_LIMITED", "high", "blocked"
+	case errors.Is(cause, types.ErrPolicy) || strings.Contains(detail, "risk"):
+		return "risk_blocked", "RISK_BLOCKED", "high", "blocked"
+	case errors.Is(cause, types.ErrPermissionDenied):
+		return "account_disabled", "ACCOUNT_DISABLED", "high", "blocked"
+	case errors.Is(cause, types.ErrUserNotFound) || errors.Is(cause, types.ErrNotFound):
+		return "account_not_found", "ACCOUNT_NOT_FOUND", "medium", "audit_only"
+	case loginAuditType(scheme) == "sms_code":
+		return "code_error", "CODE_ERROR", "medium", "audit_only"
+	default:
+		return
+	}
+}
+
+func loginFailureDetail(cause error) string {
+	if cause == nil {
+		return "authentication failed"
+	}
+	return cause.Error()
+}
+
+func sessionAuditIP(remoteAddr string) string {
+	remoteAddr = strings.TrimSpace(remoteAddr)
+	if host, _, err := net.SplitHostPort(remoteAddr); err == nil {
+		return truncateAuditValue(host, 64)
+	}
+	return truncateAuditValue(strings.Trim(remoteAddr, "[]"), 64)
+}
+
+func normalizeAuditPlatform(platform string) string {
+	platform = strings.ToLower(strings.TrimSpace(platform))
+	if platform == "" {
+		return "unknown"
+	}
+	return truncateAuditValue(platform, 32)
+}
+
+func truncateAuditValue(value string, max int) string {
+	runes := []rune(strings.TrimSpace(value))
+	if len(runes) <= max {
+		return string(runes)
+	}
+	return string(runes[:max])
+}

server/auth_audit_test.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"github.com/tinode/chat/server/store/types"
+)
+
+func TestLoginAuditAccountDoesNotTreatTokenAsAccount(t *testing.T) {
+	kind, account := loginAuditAccount("token", "secret-token", "")
+	if kind != "" || account != "" {
+		t.Fatalf("token must not be persisted as an account: kind=%q account=%q", kind, account)
+	}
+
+	kind, account = loginAuditAccount("basic", "13800138000", "")
+	if kind != "phone" || account != "13800138000" {
+		t.Fatalf("unexpected basic account classification: kind=%q account=%q", kind, account)
+	}
+}
+
+func TestMaskAndHashLoginAccount(t *testing.T) {
+	tests := map[string]string{
+		"13800138000":       "138****8000",
+		"alice@example.com": "a***@example.com",
+		"alice":             "a***e",
+		"ab":                "**",
+	}
+	for input, want := range tests {
+		if got := maskLoginAccount(input); got != want {
+			t.Errorf("maskLoginAccount(%q)=%q want %q", input, got, want)
+		}
+	}
+	hash := hashLoginAccount(" Alice ")
+	if len(hash) != 64 || hash != hashLoginAccount("alice") || strings.Contains(hash, "alice") {
+		t.Fatalf("unexpected account hash %q", hash)
+	}
+}
+
+func TestClassifyLoginFailure(t *testing.T) {
+	tests := []struct {
+		scheme string
+		err    error
+		want   string
+	}{
+		{"basic", types.ErrFailed, "password_error"},
+		{"sms_code", types.ErrFailed, "code_error"},
+		{"basic", types.ErrUserNotFound, "account_not_found"},
+		{"basic", types.ErrPermissionDenied, "account_disabled"},
+		{"basic", types.ErrPolicy, "risk_blocked"},
+		{"basic", errors.New("too many attempts"), "rate_limited"},
+	}
+	for _, tc := range tests {
+		got, _, _, _ := classifyLoginFailure(tc.scheme, tc.err)
+		if got != tc.want {
+			t.Errorf("classifyLoginFailure(%q,%v)=%q want %q", tc.scheme, tc.err, got, tc.want)
+		}
+	}
+}
+
+func TestMessageQuerySpecsExposeAdminFields(t *testing.T) {
+	privateSpec := privateMessagesInternalQuerySpec()
+	groupSpec := groupMessagesInternalQuerySpec()
+	for label, spec := range map[string]*internalQuerySpec{"private": privateSpec, "group": groupSpec} {
+		joined := strings.ToLower(spec.Select + " " + spec.From)
+		for _, field := range []string{"from_user_id", "content_type", "content_excerpt", "status", "im_message_admin_actions"} {
+			if !strings.Contains(joined, field) {
+				t.Errorf("%s query missing %s", label, field)
+			}
+		}
+	}
+	if strings.Contains(strings.ToLower(privateSpec.Select), "m.content as content") || strings.Contains(strings.ToLower(groupSpec.Select), "m.content as content") {
+		t.Fatal("message list query must not expose full message content")
+	}
+}
+
+func TestRedactClientMessageForLog(t *testing.T) {
+	raw := []byte(`{"login":{"id":"1","scheme":"basic","secret":"YWxpY2U6YWxpY2UxMjM="},"acc":{"secret":"account-secret","tmpsecret":"temp-secret"}}`)
+	redacted := string(redactClientMessageForLog(raw))
+	for _, secret := range []string{"YWxpY2U6YWxpY2UxMjM=", "account-secret", "temp-secret"} {
+		if strings.Contains(redacted, secret) {
+			t.Fatalf("redacted log still contains secret %q: %s", secret, redacted)
+		}
+	}
+	if strings.Count(redacted, "[REDACTED]") != 3 {
+		t.Fatalf("unexpected redacted payload: %s", redacted)
+	}
+}

server/db/adapter.go

@@ -240,6 +240,13 @@ type TenantInternalAdminQueryAdapter interface {
 	TenantInternalAdminQueryOne(tenantID t.TenantID, query string, args []any) (map[string]any, error)
 }
 
+type TenantSecurityAuditAdapter interface {
+	TenantLoginAuditCreate(t.TenantID, *t.LoginAuditEvent) error
+	TenantLoginFailureCreate(t.TenantID, *t.LoginFailureEvent) error
+	TenantLoginAuditClose(t.TenantID, string, time.Time) error
+	TenantMessageAdminApply(t.TenantID, *t.MessageAdminAction) error
+}
+
 // TenantRoutedAdapter can return a tenant-specific adapter, e.g. for the
 // "one tenant, one database" deployment model.
 type TenantRoutedAdapter interface {

server/db/mysql/adapter.go

@@ -272,6 +272,9 @@ func (a *adapter) Open(jsonconfig json.RawMessage) error {
 			if err = ensureIMHTTPInfrastructureTables(a.db); err != nil {
 				return errors.New("mysql adapter failed to ensure HTTP infrastructure schema: " + err.Error())
 			}
+			if err = ensureIMAdminGovernanceTables(a.db); err != nil {
+				return errors.New("mysql adapter failed to ensure admin governance schema: " + err.Error())
+			}
 			if err = ensureIMFileReviewTables(a.db); err != nil {
 				return errors.New("mysql adapter failed to ensure file review schema: " + err.Error())
 			}
@@ -512,6 +515,10 @@ func (a *adapter) TenantAdapterFor(tenantID t.TenantID) (dbadapter.TenantBusines
 		db.Close()
 		return nil, nil, err
 	}
+	if err = ensureIMAdminGovernanceTables(db); err != nil {
+		db.Close()
+		return nil, nil, err
+	}
 	if err = ensureIMFileReviewTables(db); err != nil {
 		db.Close()
 		return nil, nil, err
@@ -950,6 +957,9 @@ func (a *adapter) CreateDb(reset bool) error {
 	if err = ensureIMHTTPInfrastructureTables(tx); err != nil {
 		return err
 	}
+	if err = ensureIMAdminGovernanceTables(tx); err != nil {
+		return err
+	}
 	if err = ensureIMFileReviewTables(tx); err != nil {
 		return err
 	}

server/db/mysql/admin_governance_schema.go

@@ -0,0 +1,64 @@
+//go:build mysql
+// +build mysql
+
+package mysql
+
+func ensureIMAdminGovernanceTables(exec sqlExecutor) error {
+	statements := []string{
+		`CREATE TABLE IF NOT EXISTS im_user_login_logs (
+			id BIGINT NOT NULL AUTO_INCREMENT, user_id BIGINT NOT NULL,
+			username VARCHAR(64) NOT NULL DEFAULT '', account_type VARCHAR(24) NOT NULL DEFAULT '',
+			account_hash CHAR(64) NOT NULL DEFAULT '', account_mask VARCHAR(128) NOT NULL DEFAULT '',
+			login_type VARCHAR(24) NOT NULL, event_type VARCHAR(24) NOT NULL DEFAULT 'login',
+			session_id VARCHAR(96) NOT NULL DEFAULT '', device_id VARCHAR(255) NOT NULL DEFAULT '',
+			platform VARCHAR(32) NOT NULL DEFAULT 'unknown', app_version VARCHAR(32) NOT NULL DEFAULT '',
+			ip VARCHAR(64) NOT NULL DEFAULT '', region VARCHAR(128) NOT NULL DEFAULT '',
+			user_agent VARCHAR(512) NOT NULL DEFAULT '', risk_level VARCHAR(16) NOT NULL DEFAULT 'low',
+			request_id VARCHAR(64) NOT NULL DEFAULT '', login_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+			logout_at DATETIME(3), metadata JSON, created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+			PRIMARY KEY(id), INDEX idx_im_user_login_user_time(user_id, login_at DESC, id DESC),
+			INDEX idx_im_user_login_ip_time(ip, login_at DESC, id DESC),
+			INDEX idx_im_user_login_device_time(device_id(64), login_at DESC),
+			INDEX idx_im_user_login_request(request_id)
+		) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci`,
+		`CREATE TABLE IF NOT EXISTS im_login_failure_logs (
+			id BIGINT NOT NULL AUTO_INCREMENT, user_id BIGINT,
+			account_type VARCHAR(24) NOT NULL DEFAULT '', account_hash CHAR(64) NOT NULL DEFAULT '',
+			account_mask VARCHAR(128) NOT NULL DEFAULT '', failure_type VARCHAR(32) NOT NULL,
+			reason VARCHAR(96) NOT NULL DEFAULT '', detail VARCHAR(500) NOT NULL DEFAULT '',
+			ip VARCHAR(64) NOT NULL DEFAULT '', region VARCHAR(128) NOT NULL DEFAULT '',
+			device_id VARCHAR(255) NOT NULL DEFAULT '', platform VARCHAR(32) NOT NULL DEFAULT 'unknown',
+			app_version VARCHAR(32) NOT NULL DEFAULT '', user_agent VARCHAR(512) NOT NULL DEFAULT '',
+			risk_level VARCHAR(16) NOT NULL DEFAULT 'medium', risk_action VARCHAR(24) NOT NULL DEFAULT 'audit_only',
+			request_id VARCHAR(64) NOT NULL DEFAULT '', attempt_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+			metadata JSON, created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+			PRIMARY KEY(id), INDEX idx_im_login_failure_account_time(account_hash, attempt_at DESC, id DESC),
+			INDEX idx_im_login_failure_user_time(user_id, attempt_at DESC, id DESC),
+			INDEX idx_im_login_failure_ip_time(ip, attempt_at DESC, id DESC),
+			INDEX idx_im_login_failure_type_time(failure_type, attempt_at DESC, id DESC),
+			INDEX idx_im_login_failure_request(request_id)
+		) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci`,
+		`CREATE TABLE IF NOT EXISTS im_message_admin_actions (
+			id BIGINT NOT NULL AUTO_INCREMENT, action_id VARCHAR(96) NOT NULL,
+			command_id VARCHAR(96) NOT NULL, conversation_type VARCHAR(16) NOT NULL,
+			topic VARCHAR(64) NOT NULL, seqid BIGINT NOT NULL, sender_user_id BIGINT,
+			action VARCHAR(16) NOT NULL, action_status VARCHAR(16) NOT NULL DEFAULT 'pending',
+			reason VARCHAR(500) NOT NULL DEFAULT '', actor_admin_id BIGINT NOT NULL DEFAULT 0,
+			request_id VARCHAR(64) NOT NULL DEFAULT '', before_snapshot JSON, after_snapshot JSON,
+			failure_reason VARCHAR(96) NOT NULL DEFAULT '', failure_message VARCHAR(1000) NOT NULL DEFAULT '',
+			processed_at DATETIME(3), created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+			updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
+			PRIMARY KEY(id), UNIQUE INDEX uk_im_message_admin_action_id(action_id),
+			UNIQUE INDEX uk_im_message_admin_command(command_id),
+			INDEX idx_im_message_admin_target(conversation_type, topic, seqid, id DESC),
+			INDEX idx_im_message_admin_status(action_status, created_at, id),
+			INDEX idx_im_message_admin_actor(actor_admin_id, created_at DESC)
+		) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci`,
+	}
+	for _, statement := range statements {
+		if _, err := exec.Exec(statement); err != nil {
+			return err
+		}
+	}
+	return nil
+}

server/db/mysql/admin_governance_schema_test.go

@@ -0,0 +1,28 @@
+//go:build mysql
+// +build mysql
+
+package mysql
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestEnsureIMAdminGovernanceTablesUsesSelectedTenantDatabase(t *testing.T) {
+	exec := &recordingGroupSchemaExecutor{}
+	if err := ensureIMAdminGovernanceTables(exec); err != nil {
+		t.Fatal(err)
+	}
+	if len(exec.statements) != 3 {
+		t.Fatalf("created %d admin governance tables, want 3", len(exec.statements))
+	}
+	joined := strings.ToLower(strings.Join(exec.statements, "\n"))
+	for _, table := range []string{"im_user_login_logs", "im_login_failure_logs", "im_message_admin_actions"} {
+		if !strings.Contains(joined, table) {
+			t.Fatalf("missing table %s", table)
+		}
+	}
+	if strings.Contains(joined, "tinode.") || strings.Contains(joined, "create database") || strings.Contains(joined, "tenant_id") {
+		t.Fatalf("admin governance schema must stay inside the selected tenant database: %s", joined)
+	}
+}

server/db/mysql/tenant_security_audit.go

@@ -0,0 +1,166 @@
+//go:build mysql
+// +build mysql
+
+package mysql
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"strings"
+	"time"
+
+	"github.com/jmoiron/sqlx"
+	t "github.com/tinode/chat/server/store/types"
+)
+
+func (a *adapter) TenantLoginAuditCreate(id t.TenantID, event *t.LoginAuditEvent) error {
+	tenantAdp, err := a.routedTenantAdapter(id)
+	if err != nil || event == nil || event.UserID.IsZero() {
+		return t.ErrMalformed
+	}
+	if tenantAdp != a {
+		return tenantAdp.TenantLoginAuditCreate(id, event)
+	}
+	metadata, err := json.Marshal(event.Metadata)
+	if err != nil {
+		return err
+	}
+	_, err = a.db.Exec(`INSERT INTO im_user_login_logs
+		(user_id,username,account_type,account_hash,account_mask,login_type,event_type,session_id,device_id,platform,app_version,ip,region,user_agent,risk_level,request_id,login_at,logout_at,metadata)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`,
+		decodeUID(event.UserID), event.Username, event.AccountType, event.AccountHash, event.AccountMask,
+		event.LoginType, event.EventType, event.SessionID, event.DeviceID, event.Platform, event.AppVersion,
+		event.IP, event.Region, event.UserAgent, event.RiskLevel, event.RequestID, event.LoginAt, event.LogoutAt, nullableJSON(metadata))
+	return err
+}
+
+func (a *adapter) TenantLoginFailureCreate(id t.TenantID, event *t.LoginFailureEvent) error {
+	tenantAdp, err := a.routedTenantAdapter(id)
+	if err != nil || event == nil {
+		return t.ErrMalformed
+	}
+	if tenantAdp != a {
+		return tenantAdp.TenantLoginFailureCreate(id, event)
+	}
+	metadata, err := json.Marshal(event.Metadata)
+	if err != nil {
+		return err
+	}
+	var userID any
+	if !event.UserID.IsZero() {
+		userID = decodeUID(event.UserID)
+	}
+	_, err = a.db.Exec(`INSERT INTO im_login_failure_logs
+		(user_id,account_type,account_hash,account_mask,failure_type,reason,detail,ip,region,device_id,platform,app_version,user_agent,risk_level,risk_action,request_id,attempt_at,metadata)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`,
+		userID, event.AccountType, event.AccountHash, event.AccountMask, event.FailureType, event.Reason, event.Detail,
+		event.IP, event.Region, event.DeviceID, event.Platform, event.AppVersion, event.UserAgent,
+		event.RiskLevel, event.RiskAction, event.RequestID, event.AttemptAt, nullableJSON(metadata))
+	return err
+}
+
+func (a *adapter) TenantLoginAuditClose(id t.TenantID, sessionID string, at time.Time) error {
+	tenantAdp, err := a.routedTenantAdapter(id)
+	if err != nil || strings.TrimSpace(sessionID) == "" {
+		return t.ErrMalformed
+	}
+	if tenantAdp != a {
+		return tenantAdp.TenantLoginAuditClose(id, sessionID, at)
+	}
+	_, err = a.db.Exec("UPDATE im_user_login_logs SET logout_at=? WHERE session_id=? AND logout_at IS NULL", at, sessionID)
+	return err
+}
+
+func (a *adapter) TenantMessageAdminApply(id t.TenantID, action *t.MessageAdminAction) error {
+	tenantAdp, err := a.routedTenantAdapter(id)
+	if err != nil || action == nil || action.Topic == "" || action.SeqID <= 0 || (action.Action != "hide" && action.Action != "delete") {
+		return t.ErrMalformed
+	}
+	if tenantAdp != a {
+		return tenantAdp.TenantMessageAdminApply(id, action)
+	}
+	ctx, cancel := a.getContext()
+	if cancel != nil {
+		defer cancel()
+	}
+	tx, err := a.db.BeginTxx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer func() { _ = tx.Rollback() }()
+	var existing int64
+	if err = tx.GetContext(ctx, &existing, "SELECT COUNT(*) FROM im_message_admin_actions WHERE command_id=?", action.CommandID); err != nil {
+		return err
+	}
+	if existing > 0 {
+		return tx.Commit()
+	}
+
+	sender, beforeStatus, err := lockAdminMessage(ctx, tx, action.ConversationType, action.Topic, action.SeqID)
+	if err != nil {
+		return err
+	}
+	before, _ := json.Marshal(map[string]any{"status": beforeStatus, "sender_user_id": sender})
+	afterStatus := "hidden"
+	if action.Action == "delete" {
+		afterStatus = "deleted"
+	}
+	if action.ConversationType == "group" {
+		_, err = tx.ExecContext(ctx, "UPDATE im_group_messages SET status=?,deleted_at=?,updated_at=? WHERE topic=? AND seqid=?", afterStatus, action.ProcessedAt, action.ProcessedAt, action.Topic, action.SeqID)
+	} else {
+		_, err = tx.ExecContext(ctx, "UPDATE im_messages SET deletedat=?,updatedat=? WHERE topic=? AND seqid=?", action.ProcessedAt, action.ProcessedAt, action.Topic, action.SeqID)
+	}
+	if err != nil {
+		return err
+	}
+	after, _ := json.Marshal(map[string]any{"status": afterStatus, "sender_user_id": sender})
+	_, err = tx.ExecContext(ctx, `INSERT INTO im_message_admin_actions
+		(action_id,command_id,conversation_type,topic,seqid,sender_user_id,action,action_status,reason,actor_admin_id,request_id,before_snapshot,after_snapshot,processed_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?,CAST(? AS JSON),CAST(? AS JSON),?)`,
+		action.ActionID, action.CommandID, action.ConversationType, action.Topic, action.SeqID, sender,
+		action.Action, "success", action.Reason, action.ActorAdminID, action.RequestID, string(before), string(after), action.ProcessedAt)
+	if err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+func lockAdminMessage(ctx context.Context, tx *sqlx.Tx, conversationType, topic string, seqID int64) (int64, string, error) {
+	if conversationType == "group" {
+		var row struct {
+			Sender int64  `db:"from_user"`
+			Status string `db:"status"`
+		}
+		err := tx.GetContext(ctx, &row, "SELECT from_user,status FROM im_group_messages WHERE topic=? AND seqid=? FOR UPDATE", topic, seqID)
+		if errors.Is(err, sql.ErrNoRows) {
+			return 0, "", t.ErrNotFound
+		}
+		return row.Sender, row.Status, err
+	}
+	var row struct {
+		Sender     int64        `db:"from"`
+		DeletedAt  sql.NullTime `db:"deletedat"`
+		RecalledAt sql.NullTime `db:"recalled_at"`
+	}
+	err := tx.GetContext(ctx, &row, "SELECT `from`,deletedat,recalled_at FROM im_messages WHERE topic=? AND seqid=? FOR UPDATE", topic, seqID)
+	if errors.Is(err, sql.ErrNoRows) {
+		return 0, "", t.ErrNotFound
+	}
+	status := "normal"
+	if row.RecalledAt.Valid {
+		status = "recalled"
+	}
+	if row.DeletedAt.Valid {
+		status = "deleted"
+	}
+	return row.Sender, status, err
+}
+
+func nullableJSON(raw []byte) any {
+	if len(raw) == 0 || string(raw) == "null" {
+		return nil
+	}
+	return string(raw)
+}

server/internal_admin_query_resources.go

@@ -60,6 +60,18 @@ var internalGroupResourceSpecs = map[string]*internalQuerySpec{
 }
 
 var internalTenantResourceSpecs = map[string]*internalQuerySpec{
+	"private-messages": privateMessagesInternalQuerySpec(),
+	"group-messages":   groupMessagesInternalQuerySpec(),
+	"user-login-logs": {
+		Select: `SELECT id,CAST(user_id AS CHAR) AS user_id,username,account_type,account_mask,login_type,event_type,session_id,device_id,platform,app_version,ip,region,user_agent,risk_level,request_id,login_at,logout_at,metadata`,
+		From:   "FROM im_user_login_logs", DefaultSort: "ORDER BY id DESC", DetailKey: "id",
+		Filters: []internalQueryFilter{{"user_id", "user_id", "=", "uid"}, {"account", "account_mask", "LIKE", "string"}, {"login_type", "login_type", "=", "string"}, {"event_type", "event_type", "=", "string"}, {"platform", "platform", "=", "string"}, {"ip", "ip", "LIKE", "string"}, {"login_at_start", "login_at", ">=", "time"}, {"login_at_end", "login_at", "<=", "time"}},
+	},
+	"login-failure-logs": {
+		Select: `SELECT id,CAST(user_id AS CHAR) AS user_id,account_type,account_mask,failure_type,reason,detail,ip,region,device_id,platform,app_version,user_agent,risk_level,risk_action,request_id,attempt_at,metadata`,
+		From:   "FROM im_login_failure_logs", DefaultSort: "ORDER BY id DESC", DetailKey: "id",
+		Filters: []internalQueryFilter{{"user_id", "user_id", "=", "uid"}, {"account", "account_mask", "LIKE", "string"}, {"failure_type", "failure_type", "=", "string"}, {"platform", "platform", "=", "string"}, {"ip", "ip", "LIKE", "string"}, {"attempt_at_start", "attempt_at", ">=", "time"}, {"attempt_at_end", "attempt_at", "<=", "time"}},
+	},
 	"audit-logs": {
 		Select: "SELECT id,request_id,actor_user_id,action,target_type,target_id,ip,user_agent,detail,created_at",
 		From:   "FROM im_audit_logs", DefaultSort: "ORDER BY id DESC", DetailKey: "id",
@@ -278,6 +290,86 @@ func groupsInternalQuerySpec() *internalQuerySpec {
 	}
 }
 
+func privateMessagesInternalQuerySpec() *internalQuerySpec {
+	rawContentType := `COALESCE(NULLIF(JSON_UNQUOTE(JSON_EXTRACT(m.head,'$."x-im-type"')),''),NULLIF(JSON_UNQUOTE(JSON_EXTRACT(m.head,'$.type')),''),CASE WHEN JSON_EXTRACT(m.content,'$.callId') IS NOT NULL THEN 'call' ELSE 'text' END)`
+	contentType := `CASE ` + rawContentType + ` WHEN 'call' THEN 'system' WHEN 'system_notice' THEN 'system' WHEN 'contact_card' THEN 'card' WHEN 'forward_bundle' THEN 'card' WHEN 'link' THEN 'text' ELSE ` + rawContentType + ` END`
+	contentExcerpt := `LEFT(COALESCE(NULLIF(JSON_UNQUOTE(JSON_EXTRACT(m.content,'$.txt')),''),CASE JSON_TYPE(m.content) WHEN 'STRING' THEN JSON_UNQUOTE(m.content) ELSE CONCAT('[',` + contentType + `,']') END,''),500)`
+	status := `CASE WHEN aa.action='delete' THEN 'deleted' WHEN aa.action='hide' THEN 'hidden' WHEN m.recalled_at IS NOT NULL THEN 'recalled' WHEN m.deletedat IS NOT NULL THEN 'deleted' ELSE 'normal' END`
+	return &internalQuerySpec{
+		Select: `SELECT m.topic,m.seqid AS seq_id,CAST(m.` + "`from`" + ` AS CHAR) AS from_user_id,
+			COALESCE(su.username,'') AS sender_username,COALESCE(sp.nickname,'') AS sender_nickname,
+			CAST(rs.userid AS CHAR) AS to_user_id,COALESCE(ru.username,'') AS receiver_username,COALESCE(rp.nickname,'') AS receiver_nickname,
+			` + contentType + ` AS content_type,` + contentExcerpt + ` AS content_excerpt,
+			` + status + ` AS status,m.createdat AS created_at,m.updatedat AS updated_at`,
+		From: `FROM (SELECT * FROM im_messages WHERE topic LIKE 'p2p%') AS m
+			LEFT JOIN im_users AS su ON su.id=m.` + "`from`" + `
+			LEFT JOIN im_user_profiles AS sp ON sp.user_id=m.` + "`from`" + `
+			LEFT JOIN im_subscriptions AS rs ON rs.id=(SELECT MIN(s2.id) FROM im_subscriptions AS s2 WHERE s2.topic=m.topic AND s2.userid<>m.` + "`from`" + `)
+			LEFT JOIN im_users AS ru ON ru.id=rs.userid
+			LEFT JOIN im_user_profiles AS rp ON rp.user_id=rs.userid
+			LEFT JOIN im_message_admin_actions AS aa ON aa.id=(SELECT MAX(a2.id) FROM im_message_admin_actions AS a2 WHERE a2.conversation_type='private' AND a2.topic=m.topic AND a2.seqid=m.seqid AND a2.action_status='success')`,
+		DefaultSort: "ORDER BY m.id DESC",
+		Filters:     []internalQueryFilter{{"topic", "m.topic", "LIKE", "string"}, {"from_user_id", "m.`from`", "=", "uid"}, {"to_user_id", "rs.userid", "=", "uid"}, {"content_type", contentType, "=", "string"}, {"status", status, "=", "string"}, {"keyword", "CAST(m.content AS CHAR)", "LIKE", "string"}, {"created_at_start", "m.createdat", ">=", "time"}, {"created_at_end", "m.createdat", "<=", "time"}},
+	}
+}
+
+func groupMessagesInternalQuerySpec() *internalQuerySpec {
+	status := `CASE WHEN aa.action='delete' THEN 'deleted' WHEN aa.action='hide' THEN 'hidden' WHEN m.status='recalled' THEN 'recalled' WHEN m.status IN ('deleted','blocked') THEN m.status ELSE 'normal' END`
+	contentType := `CASE m.msg_type WHEN 'call' THEN 'system' WHEN 'system_notice' THEN 'system' WHEN 'contact_card' THEN 'card' WHEN 'forward_bundle' THEN 'card' WHEN 'link' THEN 'text' ELSE m.msg_type END`
+	contentExcerpt := `LEFT(COALESCE(NULLIF(JSON_UNQUOTE(JSON_EXTRACT(m.content,'$.txt')),''),CASE JSON_TYPE(m.content) WHEN 'STRING' THEN JSON_UNQUOTE(m.content) ELSE CONCAT('[',` + contentType + `,']') END,''),500)`
+	return &internalQuerySpec{
+		Select: `SELECT m.topic,m.seqid AS seq_id,CAST(m.from_user AS CHAR) AS from_user_id,
+			COALESCE(u.username,'') AS sender_username,COALESCE(p.nickname,'') AS sender_nickname,
+			COALESCE(gs.name,'') AS group_name,m.topic AS group_no,` + contentType + ` AS content_type,
+			` + contentExcerpt + ` AS content_excerpt,
+			` + status + ` AS status,COALESCE(m.reply_seqid,0) AS reply_to_seq,m.mentioned_user_ids AS at_users,
+			m.created_at,m.updated_at`,
+		From: `FROM im_group_messages AS m
+			LEFT JOIN im_users AS u ON u.id=m.from_user
+			LEFT JOIN im_user_profiles AS p ON p.user_id=m.from_user
+			LEFT JOIN im_group_settings AS gs ON gs.topic=m.topic COLLATE utf8mb4_0900_ai_ci
+			LEFT JOIN im_message_admin_actions AS aa ON aa.id=(SELECT MAX(a2.id) FROM im_message_admin_actions AS a2 WHERE a2.conversation_type='group' AND a2.topic=m.topic COLLATE utf8mb4_0900_ai_ci AND a2.seqid=m.seqid AND a2.action_status='success')`,
+		DefaultSort: "ORDER BY m.id DESC",
+		Filters:     []internalQueryFilter{{"topic", "m.topic", "LIKE", "string"}, {"sender_user_id", "m.from_user", "=", "uid"}, {"content_type", contentType, "=", "string"}, {"status", status, "=", "string"}, {"keyword", "CAST(m.content AS CHAR)", "LIKE", "string"}, {"created_at_start", "m.created_at", ">=", "time"}, {"created_at_end", "m.created_at", "<=", "time"}},
+	}
+}
+
+func serveInternalDashboardOverview(wrt http.ResponseWriter, req *http.Request, tenantID types.TenantID) {
+	row, err := store.InternalAdminQueries.QueryOne(tenantID, `SELECT
+		(SELECT COUNT(*) FROM im_users WHERE state<>20) AS total_users,
+		(SELECT COUNT(*) FROM im_users WHERE state=0 AND lastseen>=UTC_DATE()) AS active_users,
+		(SELECT COUNT(*) FROM im_group_settings WHERE group_status='active') AS total_groups,
+		(SELECT COUNT(*) FROM im_topics WHERE state<>20 AND (name LIKE 'p2p%' OR name LIKE 'grp%')) AS total_conversations,
+		((SELECT COUNT(*) FROM im_messages WHERE topic LIKE 'p2p%')+(SELECT COUNT(*) FROM im_group_messages)) AS total_messages,
+		((SELECT COUNT(*) FROM im_messages WHERE topic LIKE 'p2p%' AND createdat>=UTC_DATE())+(SELECT COUNT(*) FROM im_group_messages WHERE created_at>=UTC_DATE())) AS today_messages`, nil)
+	if err != nil {
+		writeInternalQueryError(wrt, req, err)
+		return
+	}
+	writeIMSuccess(wrt, req, normalizeInternalAdminRowForAPI(row))
+}
+
+func serveInternalDashboardTrends(wrt http.ResponseWriter, req *http.Request, tenantID types.TenantID) {
+	days := parseIMPositiveInt(req.URL.Query().Get("days"), 7)
+	if days > 31 {
+		days = 31
+	}
+	query := fmt.Sprintf(`WITH RECURSIVE dates AS (
+		SELECT UTC_DATE()-INTERVAL %d DAY AS day
+		UNION ALL SELECT day+INTERVAL 1 DAY FROM dates WHERE day<UTC_DATE()
+	) SELECT DATE_FORMAT(d.day,'%%Y-%%m-%%d') AS date,
+		(SELECT COUNT(*) FROM im_users AS u WHERE u.createdat>=d.day AND u.createdat<d.day+INTERVAL 1 DAY) AS user_count,
+		((SELECT COUNT(*) FROM im_messages AS pm WHERE pm.topic LIKE 'p2p%%' AND pm.createdat>=d.day AND pm.createdat<d.day+INTERVAL 1 DAY)+
+		 (SELECT COUNT(*) FROM im_group_messages AS gm WHERE gm.created_at>=d.day AND gm.created_at<d.day+INTERVAL 1 DAY)) AS message_count
+		FROM dates AS d ORDER BY d.day ASC`, days-1)
+	result, err := store.InternalAdminQueries.Query(tenantID, query, fmt.Sprintf("SELECT %d", days), nil, 1, days)
+	if err != nil {
+		writeInternalQueryError(wrt, req, err)
+		return
+	}
+	writeIMSuccess(wrt, req, map[string]any{"items": normalizeInternalAdminRowsForAPI(result.Items), "total": result.Total, "page": result.Page, "per_page": result.PerPage})
+}
+
 func buildInternalAdminListQuery(req *http.Request, spec *internalQuerySpec, scope string) (string, string, []any, int, int, error) {
 	page := parseIMPositiveInt(req.URL.Query().Get("page"), 1)
 	perPage := parseIMLimit(firstNonEmpty(req.URL.Query().Get("per_page"), req.URL.Query().Get("limit")), 20, 200)

server/internal_api.go

@@ -99,6 +99,14 @@ func serveInternalAdminQuery(wrt http.ResponseWriter, req *http.Request, prefix
 	}
 
 	switch {
+	case len(parts) == 4 && parts[2] == "dashboard" && parts[3] == "overview":
+		serveInternalDashboardOverview(wrt, req, tenant.ID)
+	case len(parts) == 4 && parts[2] == "dashboard" && parts[3] == "trends":
+		serveInternalDashboardTrends(wrt, req, tenant.ID)
+	case len(parts) == 3 && parts[2] == "private-messages":
+		serveInternalAdminResourceList(wrt, req, tenant.ID, "private-messages", "")
+	case len(parts) == 3 && parts[2] == "group-messages":
+		serveInternalAdminResourceList(wrt, req, tenant.ID, "group-messages", "")
 	case len(parts) == 3 && parts[2] == "users":
 		serveInternalAdminResourceList(wrt, req, tenant.ID, "users", "")
 	case len(parts) == 4 && parts[2] == "users":
@@ -377,25 +385,21 @@ func serveInternalMessageQuery(wrt http.ResponseWriter, req *http.Request, tenan
 		writeIMError(wrt, req, http.StatusBadRequest, 30000, imReasonMalformedRequest, "malformed request", nil)
 		return
 	}
-	msg, err := store.Messages.GetOne(tenantID, topic, seq)
+	resource := "private-messages"
+	spec := privateMessagesInternalQuerySpec()
+	where := "m.topic=? AND m.seqid=?"
+	if strings.HasPrefix(topic, "grp") {
+		resource = "group-messages"
+		spec = groupMessagesInternalQuerySpec()
+	}
+	spec.Select += ",m.head,JSON_UNQUOTE(m.content) AS content"
+	row, err := store.InternalAdminQueries.QueryOne(tenantID, spec.Select+" "+spec.From+" WHERE "+where, []any{topic, seq})
 	if err != nil {
 		writeInternalQueryError(wrt, req, err)
 		return
 	}
-	writeIMSuccess(wrt, req, map[string]any{
-		"topic":         msg.Topic,
-		"seq_id":        msg.SeqId,
-		"from":          internalAdminUIDStringRaw(msg.From),
-		"client_msg_id": msg.ClientMsgID,
-		"version":       msg.Version,
-		"head":          msg.Head,
-		"content":       msg.Content,
-		"deleted_at":    msg.DeletedAt,
-		"recalled_at":   msg.RecalledAt,
-		"recalled_by":   internalAdminUIDStringRaw(msg.RecalledBy),
-		"created_at":    msg.CreatedAt,
-		"updated_at":    msg.UpdatedAt,
-	})
+	row["conversation_type"] = strings.TrimSuffix(resource, "-messages")
+	writeIMSuccess(wrt, req, normalizeInternalAdminRowForAPI(row))
 }
 
 func serveInternalFileQuery(wrt http.ResponseWriter, req *http.Request, tenantID types.TenantID, fileID string) {

server/kafka_admin_commands.go

@@ -33,6 +33,8 @@ const (
 	adminCommandUserCancel         = "user.account.cancel"
 	adminCommandUserDelete         = "user.account.delete"
 	adminCommandUserPasswordReset  = "user.password.reset"
+	adminCommandMessageHide        = "message.hide"
+	adminCommandMessageDelete      = "message.delete"
 	adminCommandKafkaDeadReplay    = "kafka.dead_letter.replay"
 	adminCommandKafkaDeadIgnore    = "kafka.dead_letter.ignore"
 	adminCommandKafkaDeadResolve   = "kafka.dead_letter.resolve"
@@ -41,22 +43,24 @@ const (
 var publishKafkaDeadLetter = publishKafkaEnvelope
 
 type adminCommandPayload struct {
-	CommandID    string               `json:"command_id"`
-	ActorUserID  string               `json:"actor_user_id"`
-	Topic        string               `json:"topic"`
-	UserID       string               `json:"user_id"`
-	UserIDs      []string             `json:"user_ids"`
-	TargetID     string               `json:"target_user_id"`
-	DeviceID     string               `json:"device_id"`
-	PasswordHash string               `json:"password_hash"`
-	Version      int                  `json:"version"`
-	Reason       string               `json:"reason"`
-	DeadID       string               `json:"dead_id"`
-	Note         string               `json:"note"`
-	Hard         bool                 `json:"hard"`
-	ExpiresAt    *time.Time           `json:"expires_at"`
-	Profile      groupProfilePatch    `json:"profile"`
-	Governance   groupGovernancePatch `json:"governance"`
+	CommandID        string               `json:"command_id"`
+	ActorUserID      string               `json:"actor_user_id"`
+	Topic            string               `json:"topic"`
+	ConversationType string               `json:"conversation_type"`
+	SeqID            int64                `json:"seq_id"`
+	UserID           string               `json:"user_id"`
+	UserIDs          []string             `json:"user_ids"`
+	TargetID         string               `json:"target_user_id"`
+	DeviceID         string               `json:"device_id"`
+	PasswordHash     string               `json:"password_hash"`
+	Version          int                  `json:"version"`
+	Reason           string               `json:"reason"`
+	DeadID           string               `json:"dead_id"`
+	Note             string               `json:"note"`
+	Hard             bool                 `json:"hard"`
+	ExpiresAt        *time.Time           `json:"expires_at"`
+	Profile          groupProfilePatch    `json:"profile"`
+	Governance       groupGovernancePatch `json:"governance"`
 }
 
 type groupProfilePatch struct {
@@ -166,6 +170,15 @@ func executeKafkaAdminCommand(tenantID types.TenantID, envelope kafkaEnvelope, p
 	if eventType == adminCommandUserPasswordReset {
 		return executeKafkaUserPasswordResetCommand(tenantID, payload)
 	}
+	if eventType == adminCommandMessageHide || eventType == adminCommandMessageDelete {
+		return executeKafkaMessageAdminCommand(tenantID, envelope, payload)
+	}
+	if eventType == adminCommandUserBan || eventType == adminCommandUserUnban ||
+		eventType == adminCommandUserFreeze || eventType == adminCommandUserUnfreeze ||
+		eventType == adminCommandUserDeviceKick || eventType == adminCommandUserLogoutAll ||
+		eventType == adminCommandUserCancel || eventType == adminCommandUserDelete {
+		return executeKafkaUserGovernanceCommand(tenantID, envelope, payload, types.ZeroUid)
+	}
 	actor := parseKafkaCommandUser(payload.ActorUserID)
 	if actor.IsZero() {
 		return nil, types.ErrMalformed
@@ -187,9 +200,6 @@ func executeKafkaAdminCommand(tenantID types.TenantID, envelope kafkaEnvelope, p
 			return nil, err
 		}
 		return map[string]any{"dead_id": payload.DeadID, "status": types.KafkaDeadStatusResolved}, nil
-	case adminCommandUserBan, adminCommandUserUnban, adminCommandUserFreeze, adminCommandUserUnfreeze,
-		adminCommandUserDeviceKick, adminCommandUserLogoutAll, adminCommandUserCancel, adminCommandUserDelete:
-		return executeKafkaUserGovernanceCommand(tenantID, envelope, payload, actor)
 	}
 	if store.GroupBusiness == nil {
 		return nil, errors.New("group business store is not initialized")
@@ -320,6 +330,45 @@ func executeKafkaAdminCommand(tenantID types.TenantID, envelope kafkaEnvelope, p
 	return nil, errors.New("unsupported admin command: " + envelope.EventType)
 }
 
+func executeKafkaMessageAdminCommand(tenantID types.TenantID, envelope kafkaEnvelope, payload adminCommandPayload) (map[string]any, error) {
+	conversationType := strings.TrimSpace(payload.ConversationType)
+	topic := strings.TrimSpace(payload.Topic)
+	if (conversationType != "private" && conversationType != "group") || topic == "" || payload.SeqID <= 0 {
+		return nil, types.ErrMalformed
+	}
+	action := strings.TrimPrefix(strings.TrimSpace(envelope.EventType), "message.")
+	actorAdminID := int64(0)
+	if envelope.Actor != nil {
+		actorAdminID, _ = strconv.ParseInt(strings.TrimSpace(envelope.Actor.ID), 10, 64)
+	}
+	now := time.Now().UTC().Round(time.Millisecond)
+	commandID := firstNonEmpty(payload.CommandID, envelope.EventID)
+	actionID := "action_" + envelope.EventID
+	if len(actionID) > 96 {
+		actionID = actionID[:96]
+	}
+	requestID := strings.TrimSpace(envelope.TraceID)
+	if len(requestID) > 64 {
+		requestID = requestID[:64]
+	}
+	if err := store.SecurityAudit.ApplyMessageAction(tenantID, &types.MessageAdminAction{
+		ActionID: actionID, CommandID: commandID, ConversationType: conversationType,
+		Topic: topic, SeqID: payload.SeqID, Action: action, Reason: strings.TrimSpace(payload.Reason),
+		ActorAdminID: actorAdminID, RequestID: requestID, ProcessedAt: now,
+	}); err != nil {
+		return nil, err
+	}
+	if conversationType == "group" {
+		if err := store.InvalidateHotMessages(tenantID, topic, []types.Range{{Low: payload.SeqID}}); err != nil {
+			logs.Warn.Printf("message admin cache invalidation failed tenant:%d topic:%s seq:%d err:%v", tenantID, topic, payload.SeqID, err)
+		}
+	}
+	return map[string]any{
+		"conversation_type": conversationType, "topic": topic, "seq_id": payload.SeqID,
+		"action": action, "status": "success", "processed_at": now,
+	}, nil
+}
+
 func executeKafkaUserGovernanceCommand(tenantID types.TenantID, envelope kafkaEnvelope, payload adminCommandPayload, actor types.Uid) (map[string]any, error) {
 	target := parseKafkaCommandUser(firstNonEmpty(payload.TargetID, payload.UserID))
 	if target.IsZero() {

server/kafka_admin_message_test.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"testing"
+	"time"
+
+	"github.com/tinode/chat/server/store"
+	"github.com/tinode/chat/server/store/types"
+)
+
+type messageAdminAuditRecorder struct {
+	action *types.MessageAdminAction
+}
+
+func (r *messageAdminAuditRecorder) RecordLogin(types.TenantID, *types.LoginAuditEvent) error {
+	return nil
+}
+
+func (r *messageAdminAuditRecorder) RecordLoginFailure(types.TenantID, *types.LoginFailureEvent) error {
+	return nil
+}
+
+func (r *messageAdminAuditRecorder) CloseLogin(types.TenantID, string, time.Time) error {
+	return nil
+}
+
+func (r *messageAdminAuditRecorder) ApplyMessageAction(_ types.TenantID, action *types.MessageAdminAction) error {
+	r.action = action
+	return nil
+}
+
+func TestExecuteKafkaMessageAdminCommand(t *testing.T) {
+	previous := store.SecurityAudit
+	recorder := &messageAdminAuditRecorder{}
+	store.SecurityAudit = recorder
+	t.Cleanup(func() { store.SecurityAudit = previous })
+
+	result, err := executeKafkaMessageAdminCommand(1, kafkaEnvelope{
+		EventID: "event-1", TraceID: "trace-1", EventType: adminCommandMessageHide,
+		Actor: &kafkaActor{Type: "admin", ID: "42", DisplayName: "operator"},
+	}, adminCommandPayload{
+		CommandID: "command-1", ConversationType: "private", Topic: "p2ptest", SeqID: 7, Reason: "sensitive content",
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if recorder.action == nil {
+		t.Fatal("message action was not persisted")
+	}
+	if recorder.action.ActionID != "action_event-1" || recorder.action.CommandID != "command-1" ||
+		recorder.action.ActorAdminID != 42 || recorder.action.Action != "hide" || recorder.action.Topic != "p2ptest" || recorder.action.SeqID != 7 {
+		t.Fatalf("unexpected persisted action: %+v", recorder.action)
+	}
+	if result["status"] != "success" || result["action"] != "hide" {
+		t.Fatalf("unexpected command result: %+v", result)
+	}
+}

server/session.go

@@ -461,6 +461,9 @@ func (s *Session) purgeChannels() {
 func (s *Session) cleanUp(expired bool) {
 	atomic.StoreInt32(&s.terminating, 1)
 	if !s.uid.IsZero() && s.tenantID.IsValid() {
+		if err := store.SecurityAudit.CloseLogin(s.tenantID, s.sid, time.Now().UTC().Round(time.Millisecond)); err != nil {
+			logs.Warn.Println("s.cleanUp: failed to close login audit", s.uid, err, s.sid)
+		}
 		if err := store.MarkUserOffline(s.tenantID, s.uid, s.sid, currentNodeID()); err != nil {
 			logs.Warn.Println("s.cleanUp: failed to mark user offline", s.uid, err, s.sid)
 		}
@@ -498,24 +501,46 @@ func (s *Session) dispatchRaw(raw []byte) {
 		return
 	}
 
-	toLog := raw
-	truncated := ""
-	if len(raw) > 512 {
-		toLog = raw[:512]
-		truncated = "<...>"
-	}
-	logs.Info.Printf("in: '%s%s' sid='%s' uid='%s'", toLog, truncated, s.sid, s.uid)
-
 	if err := json.Unmarshal(raw, &msg); err != nil {
 		// Malformed message
 		logs.Warn.Println("s.dispatch", err, s.sid)
 		s.queueOut(ErrMalformed("", "", now))
 		return
 	}
+	toLog := redactClientMessageForLog(raw)
+	truncated := ""
+	if len(toLog) > 512 {
+		toLog = toLog[:512]
+		truncated = "<...>"
+	}
+	logs.Info.Printf("in: '%s%s' sid='%s' uid='%s'", toLog, truncated, s.sid, s.uid)
 
 	s.dispatch(&msg)
 }
 
+func redactClientMessageForLog(raw []byte) []byte {
+	var payload map[string]any
+	if json.Unmarshal(raw, &payload) != nil {
+		return []byte("[malformed payload]")
+	}
+	for _, section := range []string{"login", "acc"} {
+		body, ok := payload[section].(map[string]any)
+		if !ok {
+			continue
+		}
+		for _, field := range []string{"secret", "tmpsecret"} {
+			if _, exists := body[field]; exists {
+				body[field] = "[REDACTED]"
+			}
+		}
+	}
+	redacted, err := json.Marshal(payload)
+	if err != nil {
+		return []byte("[unprintable payload]")
+	}
+	return redacted
+}
+
 func (s *Session) dispatch(msg *ClientComMessage) {
 	now := types.TimeNow()
 	atomic.StoreInt64(&s.lastAction, now.UnixNano())
@@ -1089,6 +1114,7 @@ func (s *Session) login(msg *ClientComMessage) {
 
 	handler := store.Store.GetLogicalAuthHandler(msg.Login.Scheme)
 	if handler == nil {
+		recordSessionLoginFailure(s, msg.Login.Scheme, msg.Login.Secret, nil, msg.Id, types.ErrUnsupported, msg.Timestamp)
 		logs.Warn.Println("s.login: unknown authentication scheme", msg.Login.Scheme, s.sid)
 		s.queueOut(ErrAuthUnknownScheme(msg.Id, "", msg.Timestamp))
 		return
@@ -1097,6 +1123,7 @@ func (s *Session) login(msg *ClientComMessage) {
 	rec, challenge, err := handler.Authenticate(
 		auth.AuthContext{TenantID: s.tenantID, RemoteAddr: s.remoteAddr}, msg.Login.Secret)
 	if err != nil {
+		recordSessionLoginFailure(s, msg.Login.Scheme, msg.Login.Secret, rec, msg.Id, err, msg.Timestamp)
 		resp := decodeStoreError(err, msg.Id, msg.Timestamp, nil)
 		if resp.Ctrl.Code >= 500 {
 			// Log internal errors
@@ -1107,6 +1134,7 @@ func (s *Session) login(msg *ClientComMessage) {
 	}
 
 	if rec == nil || rec.TenantID != s.tenantID {
+		recordSessionLoginFailure(s, msg.Login.Scheme, msg.Login.Secret, rec, msg.Id, types.ErrFailed, msg.Timestamp)
 		logs.Warn.Println("s.login: authenticator returned invalid tenant", s.sid)
 		s.queueOut(decodeStoreError(types.ErrFailed, msg.Id, msg.Timestamp, nil))
 		return
@@ -1121,6 +1149,7 @@ func (s *Session) login(msg *ClientComMessage) {
 	}
 
 	if err != nil {
+		recordSessionLoginFailure(s, msg.Login.Scheme, msg.Login.Secret, rec, msg.Id, err, msg.Timestamp)
 		logs.Warn.Println("s.login: user state check failed", rec.Uid, err, s.sid)
 		s.queueOut(decodeStoreError(err, msg.Id, msg.Timestamp, nil))
 		return
@@ -1142,10 +1171,11 @@ func (s *Session) login(msg *ClientComMessage) {
 		}
 	}
 	if err != nil {
+		recordSessionLoginFailure(s, msg.Login.Scheme, msg.Login.Secret, rec, msg.Id, err, msg.Timestamp)
 		logs.Warn.Println("s.login: failed to validate credentials:", err, s.sid)
 		s.queueOut(decodeStoreError(err, msg.Id, msg.Timestamp, nil))
 	} else {
-		s.queueOut(s.onLogin(msg.Id, msg.Timestamp, rec, missing))
+		s.queueOut(s.onLogin(msg.Id, msg.Timestamp, rec, missing, msg.Login.Scheme, strings.SplitN(string(msg.Login.Secret), ":", 2)[0]))
 	}
 }
 
@@ -1209,7 +1239,7 @@ func (s *Session) authSecretReset(params []byte) error {
 }
 
 // onLogin performs steps after successful authentication.
-func (s *Session) onLogin(msgID string, timestamp time.Time, rec *auth.Rec, missing []string) *ServerComMessage {
+func (s *Session) onLogin(msgID string, timestamp time.Time, rec *auth.Rec, missing []string, scheme, account string) *ServerComMessage {
 	var reply *ServerComMessage
 	var params map[string]any
 
@@ -1266,6 +1296,9 @@ func (s *Session) onLogin(msgID string, timestamp time.Time, rec *auth.Rec, miss
 				logs.Warn.Println("failed to update device record", err)
 			}
 		}
+		if !s.uid.IsZero() {
+			recordSessionLoginSuccess(s, rec, scheme, account, msgID, timestamp)
+		}
 	}
 
 	// GenSecret fails only if tokenLifetime is < 0. It can't be < 0 here,

server/store/security_audit.go

@@ -0,0 +1,63 @@
+package store
+
+import (
+	"time"
+
+	adapter "github.com/tinode/chat/server/db"
+	"github.com/tinode/chat/server/store/types"
+)
+
+type SecurityAuditPersistenceInterface interface {
+	RecordLogin(types.TenantID, *types.LoginAuditEvent) error
+	RecordLoginFailure(types.TenantID, *types.LoginFailureEvent) error
+	CloseLogin(types.TenantID, string, time.Time) error
+	ApplyMessageAction(types.TenantID, *types.MessageAdminAction) error
+}
+
+type securityAuditMapper struct{}
+
+var SecurityAudit SecurityAuditPersistenceInterface = securityAuditMapper{}
+
+func tenantSecurityAuditAdapter(tenantID types.TenantID) (adapter.TenantSecurityAuditAdapter, error) {
+	business, err := tenantBusinessAdapter(tenantID)
+	if err != nil {
+		return nil, err
+	}
+	audit, ok := business.(adapter.TenantSecurityAuditAdapter)
+	if !ok {
+		return nil, types.ErrUnsupported
+	}
+	return audit, nil
+}
+
+func (securityAuditMapper) RecordLogin(tenantID types.TenantID, event *types.LoginAuditEvent) error {
+	audit, err := tenantSecurityAuditAdapter(tenantID)
+	if err != nil {
+		return err
+	}
+	return audit.TenantLoginAuditCreate(tenantID, event)
+}
+
+func (securityAuditMapper) RecordLoginFailure(tenantID types.TenantID, event *types.LoginFailureEvent) error {
+	audit, err := tenantSecurityAuditAdapter(tenantID)
+	if err != nil {
+		return err
+	}
+	return audit.TenantLoginFailureCreate(tenantID, event)
+}
+
+func (securityAuditMapper) CloseLogin(tenantID types.TenantID, sessionID string, at time.Time) error {
+	audit, err := tenantSecurityAuditAdapter(tenantID)
+	if err != nil {
+		return err
+	}
+	return audit.TenantLoginAuditClose(tenantID, sessionID, at)
+}
+
+func (securityAuditMapper) ApplyMessageAction(tenantID types.TenantID, action *types.MessageAdminAction) error {
+	audit, err := tenantSecurityAuditAdapter(tenantID)
+	if err != nil {
+		return err
+	}
+	return audit.TenantMessageAdminApply(tenantID, action)
+}

server/store/store.go

@@ -4714,6 +4714,7 @@ func init() {
 	RegistrationConfig = registrationConfigMapper{}
 	TenantEntry = tenantEntryMapper{}
 	InternalAdminQueries = internalAdminQueryMapper{}
+	SecurityAudit = securityAuditMapper{}
 	Users = usersMapper{}
 	Topics = topicsMapper{}
 	Subs = subsMapper{}

server/store/types/admin_governance.go

@@ -0,0 +1,59 @@
+package types
+
+import "time"
+
+type LoginAuditEvent struct {
+	UserID      Uid
+	Username    string
+	AccountType string
+	AccountHash string
+	AccountMask string
+	LoginType   string
+	EventType   string
+	SessionID   string
+	DeviceID    string
+	Platform    string
+	AppVersion  string
+	IP          string
+	Region      string
+	UserAgent   string
+	RiskLevel   string
+	RequestID   string
+	LoginAt     time.Time
+	LogoutAt    *time.Time
+	Metadata    map[string]any
+}
+
+type LoginFailureEvent struct {
+	UserID      Uid
+	AccountType string
+	AccountHash string
+	AccountMask string
+	FailureType string
+	Reason      string
+	Detail      string
+	IP          string
+	Region      string
+	DeviceID    string
+	Platform    string
+	AppVersion  string
+	UserAgent   string
+	RiskLevel   string
+	RiskAction  string
+	RequestID   string
+	AttemptAt   time.Time
+	Metadata    map[string]any
+}
+
+type MessageAdminAction struct {
+	ActionID         string
+	CommandID        string
+	ConversationType string
+	Topic            string
+	SeqID            int64
+	Action           string
+	Reason           string
+	ActorAdminID     int64
+	RequestID        string
+	ProcessedAt      time.Time
+}

server/user.go

@@ -307,7 +307,7 @@ func replyCreateUser(s *Session, msg *ClientComMessage, rec *auth.Rec) {
 	if msg.Acc.Login {
 		// Process user's login request.
 		_, missing, _ := stringSliceDelta(globals.authValidators[rec.AuthLevel], validated)
-		reply = s.onLogin(msg.Id, msg.Timestamp, rec, missing)
+		reply = s.onLogin(msg.Id, msg.Timestamp, rec, missing, msg.Acc.Scheme, account)
 	} else {
 		// Not using the new account for logging in.
 		reply = NoErrCreated(msg.Id, "", msg.Timestamp)