fix: harden channel rights and sticker compatibility

Co-authored-by: HSgram <3013954224@qq.com>

internal/domain/channel.go

@@ -240,20 +240,29 @@ func NormalizeFullMegagroupAdminRights(ch Channel, rights ChannelAdminRights) Ch
 
 // ChannelBannedRights is a domain-only representation of Telegram banned rights.
 type ChannelBannedRights struct {
-	ViewMessages bool
-	SendMessages bool
-	SendMedia    bool
-	SendStickers bool
-	SendGifs     bool
-	SendGames    bool
-	SendInline   bool
-	EmbedLinks   bool
-	SendPolls    bool
-	ChangeInfo   bool
-	InviteUsers  bool
-	PinMessages  bool
-	EditRank     bool
-	UntilDate    int
+	ViewMessages    bool
+	SendMessages    bool
+	SendMedia       bool
+	SendStickers    bool
+	SendGifs        bool
+	SendGames       bool
+	SendInline      bool
+	EmbedLinks      bool
+	SendPolls       bool
+	ChangeInfo      bool
+	InviteUsers     bool
+	PinMessages     bool
+	ManageTopics    bool
+	SendPhotos      bool
+	SendVideos      bool
+	SendRoundvideos bool
+	SendAudios      bool
+	SendVoices      bool
+	SendDocs        bool
+	SendPlain       bool
+	EditRank        bool
+	SendReactions   bool
+	UntilDate       int
 }
 
 // ChannelReactionPolicyType describes which reactions are allowed in a channel.

internal/domain/channel_banned_rights.go

@@ -0,0 +1,109 @@
+package domain
+
+import "strings"
+
+// ChannelBannedRightsBlockMessage reports whether a non-admin channel member is
+// blocked by fine-grained chatBannedRights for this concrete message payload.
+func ChannelBannedRightsBlockMessage(req SendChannelMessageRequest, channel Channel, member ChannelMember, selfBoostsApplied int) bool {
+	if req.Action != nil || channelBannedRightsBypassed(channel, member) {
+		return false
+	}
+	if req.Media.IsZero() {
+		if strings.TrimSpace(req.Message) == "" {
+			return false
+		}
+		return channelBannedRightsBlockWithBoost(channel, member.BannedRights.SendPlain, channel.DefaultBannedRights.SendPlain, selfBoostsApplied)
+	}
+	return ChannelBannedRightsBlockMedia(channel, member, req.Media, selfBoostsApplied)
+}
+
+// ChannelBannedRightsBlockMedia applies both legacy send_media and modern
+// per-media banned rights to one message media payload.
+func ChannelBannedRightsBlockMedia(channel Channel, member ChannelMember, media *MessageMedia, selfBoostsApplied int) bool {
+	if media.IsZero() || channelBannedRightsBypassed(channel, member) {
+		return false
+	}
+	return channelBannedRightsBlockWithBoost(
+		channel,
+		channelBannedRightsBlockMediaKind(member.BannedRights, media),
+		channelBannedRightsBlockMediaKind(channel.DefaultBannedRights, media),
+		selfBoostsApplied,
+	)
+}
+
+// ChannelBannedRightsBlockReactions applies send_reactions. Empty reaction
+// vectors are handled by callers as removals and should remain allowed.
+func ChannelBannedRightsBlockReactions(channel Channel, member ChannelMember, selfBoostsApplied int) bool {
+	if channelBannedRightsBypassed(channel, member) {
+		return false
+	}
+	return channelBannedRightsBlockWithBoost(channel, member.BannedRights.SendReactions, channel.DefaultBannedRights.SendReactions, selfBoostsApplied)
+}
+
+// ChannelBannedRightsBlockManageTopics applies manage_topics to topic create,
+// edit, and closed-topic reply bypasses.
+func ChannelBannedRightsBlockManageTopics(channel Channel, member ChannelMember, selfBoostsApplied int) bool {
+	if channelBannedRightsBypassed(channel, member) {
+		return false
+	}
+	return channelBannedRightsBlockWithBoost(channel, member.BannedRights.ManageTopics, channel.DefaultBannedRights.ManageTopics, selfBoostsApplied)
+}
+
+func channelBannedRightsBypassed(channel Channel, member ChannelMember) bool {
+	return channel.Broadcast || member.Role == ChannelRoleCreator || member.Role == ChannelRoleAdmin
+}
+
+func channelBannedRightsBlockWithBoost(channel Channel, memberBlocked, defaultBlocked bool, selfBoostsApplied int) bool {
+	if memberBlocked {
+		return true
+	}
+	if !defaultBlocked {
+		return false
+	}
+	return channel.BoostsUnrestrict == 0 || selfBoostsApplied < channel.BoostsUnrestrict
+}
+
+func channelBannedRightsBlockMediaKind(rights ChannelBannedRights, media *MessageMedia) bool {
+	if rights.SendMedia {
+		return true
+	}
+	switch media.Kind {
+	case MessageMediaKindPhoto:
+		return rights.SendPhotos
+	case MessageMediaKindDocument:
+		return channelBannedRightsBlockDocument(rights, media)
+	case MessageMediaKindPoll:
+		return rights.SendPolls
+	case MessageMediaKindDice:
+		return rights.SendGames
+	case MessageMediaKindWebPage:
+		return rights.EmbedLinks
+	default:
+		return rights.SendMedia
+	}
+}
+
+func channelBannedRightsBlockDocument(rights ChannelBannedRights, media *MessageMedia) bool {
+	if media == nil || media.Document == nil {
+		return rights.SendDocs
+	}
+	if media.Document.IsSticker() {
+		return rights.SendStickers
+	}
+	if media.Document.IsGif() {
+		return rights.SendGifs
+	}
+	if media.Round {
+		return rights.SendRoundvideos
+	}
+	if media.Voice {
+		return rights.SendVoices
+	}
+	if media.Video {
+		return rights.SendVideos
+	}
+	if media.IsMusic() {
+		return rights.SendAudios
+	}
+	return rights.SendDocs
+}

internal/domain/media.go

@@ -653,10 +653,16 @@ type StickerKeyword struct {
 	Keywords   []string `json:"keywords"`
 }
 
-// StickerSetSystemKeyEmojiDefaultStatuses 是 inputStickerSetEmojiDefaultStatuses
-// 对应的系统集标识：premium 用户 emoji status 选择器的"默认状态"主体集
-// （messages.getStickerSet 与 account.getDefaultEmojiStatuses 共用）。
-const StickerSetSystemKeyEmojiDefaultStatuses = "emoji_default_statuses"
+const (
+	// StickerSetSystemKeyEmojiDefaultStatuses 是 inputStickerSetEmojiDefaultStatuses
+	// 对应的系统集标识：premium 用户 emoji status 选择器的"默认状态"主体集
+	// （messages.getStickerSet 与 account.getDefaultEmojiStatuses 共用）。
+	StickerSetSystemKeyEmojiDefaultStatuses = "emoji_default_statuses"
+	// StickerSetSystemKeyEmojiDefaultTopicIcons 对应论坛 topic 默认图标系统集。
+	StickerSetSystemKeyEmojiDefaultTopicIcons = "emoji_default_topic_icons"
+	// StickerSetSystemKeyPremiumGifts 对应 premium gifts 系统集。
+	StickerSetSystemKeyPremiumGifts = "premium_gifts"
+)
 
 // StickerSetKind 区分贴纸集用途（影响 getAllStickers / getEmojiStickers 归类）。
 type StickerSetKind string