A bunch of fixes to CIA building

1. Clean stale state
2. DLC CIAs
3. Build content index for ticket better

src/core/ncch/cia_builder.cpp

@@ -47,6 +47,9 @@ bool CIABuilder::Init(const std::string& destination, TitleMetadata tmd_,
                       const std::string& certs_db_path, std::size_t total_size_,
                       const ProgressCallback& callback_) {
 
+    header = {};
+    meta = {};
+
     file = std::make_shared<HashedFile>(destination, "wb");
     if (!*file) {
         LOG_ERROR(Core, "Could not open file {}", destination);
@@ -165,13 +168,14 @@ bool CIABuilder::AddContent(u16 content_id, NCCHContainer& ncch) {
     written = Common::AlignUp(file->Tell(), CIA_ALIGNMENT);
 
     header.content_size = written - content_offset;
-    header.SetContentPresent(content_id);
 
     auto& tmd_chunk = tmd.GetContentChunkByID(content_id);
+    header.SetContentPresent(tmd_chunk.index);
     file->GetHash(tmd_chunk.hash.data());
     file->SetHashEnabled(false);
 
-    if (tmd_chunk.index != TMDContentIndex::Main) {
+    // DLCs do not have a meta
+    if (tmd_chunk.index != TMDContentIndex::Main || (tmd.GetTitleID() & 0x0004008c'00000000)) {
         return true;
     }
 

src/core/ncch/cia_builder.h

@@ -97,7 +97,6 @@ private:
     std::size_t ticket_offset{};
     std::size_t tmd_offset{};
     std::size_t content_offset{};
-    std::size_t metadata_offset{};
 
     std::shared_ptr<HashedFile> file;
     std::size_t written{}; // size written (with alignment)

src/core/ncch/ticket.cpp

@@ -31,8 +31,9 @@ Ticket BuildFakeTicket(u64 title_id) {
     ticket.title_id = title_id;
     ticket.common_key_index = 0x00;
     ticket.audit = 0x01;
-    std::memset(ticket.content_index.data(), 0xFF, ticket.content_index.size());
     std::memcpy(ticket.content_index.data(), TicketContentIndex.data(), TicketContentIndex.size());
+    // GodMode9 by default sets all remaining 0x80 bytes to 0xFF, but legit tickets only set 0x20
+    std::memset(ticket.content_index.data() + TicketContentIndex.size(), 0xFF, 0x20);
     return ticket;
 }