Merge pull request #2607 from DarkLordZach/arp-1

glue: Implement arp:w and arp:r services

4 files changed, 34 insertions, 2 deletions

diff --git a/src/core/file_sys/patch_manager.cpp b/src/core/file_sys/patch_manager.cpp
index da823c37b..a8f80e2c6 100644
--- a/src/core/file_sys/patch_manager.cpp
+++ b/src/core/file_sys/patch_manager.cpp
@@ -493,6 +493,16 @@ std::map<std::string, std::string, std::less<>> PatchManager::GetPatchVersionNam
     return out;
 }
 
+std::optional<u32> PatchManager::GetGameVersion() const {
+    const auto& installed = Core::System::GetInstance().GetContentProvider();
+    const auto update_tid = GetUpdateTitleID(title_id);
+    if (installed.HasEntry(update_tid, ContentRecordType::Program)) {
+        return installed.GetEntryVersion(update_tid);
+    }
+
+    return installed.GetEntryVersion(title_id);
+}
+
 std::pair<std::unique_ptr<NACP>, VirtualFile> PatchManager::GetControlMetadata() const {
     const auto& installed = Core::System::GetInstance().GetContentProvider();
 
diff --git a/src/core/file_sys/patch_manager.h b/src/core/file_sys/patch_manager.h
index 769f8c6f0..a363c6577 100644
--- a/src/core/file_sys/patch_manager.h
+++ b/src/core/file_sys/patch_manager.h
@@ -66,8 +66,13 @@ public:
     std::map<std::string, std::string, std::less<>> GetPatchVersionNames(
         VirtualFile update_raw = nullptr) const;
 
-    // Given title_id of the program, attempts to get the control data of the update and parse it,
-    // falling back to the base control data.
+    // If the game update exists, returns the u32 version field in its Meta-type NCA. If that fails,
+    // it will fallback to the Meta-type NCA of the base game. If that fails, the result will be
+    // std::nullopt
+    std::optional<u32> GetGameVersion() const;
+
+    // Given title_id of the program, attempts to get the control data of the update and parse
+    // it, falling back to the base control data.
     std::pair<std::unique_ptr<NACP>, VirtualFile> GetControlMetadata() const;
 
     // Version of GetControlMetadata that takes an arbitrary NCA
diff --git a/src/core/file_sys/registered_cache.cpp b/src/core/file_sys/registered_cache.cpp
index 58917e094..4608490e0 100644
--- a/src/core/file_sys/registered_cache.cpp
+++ b/src/core/file_sys/registered_cache.cpp
@@ -645,6 +645,20 @@ ContentProviderUnion::ListEntriesFilterOrigin(std::optional<ContentProviderUnion
     return out;
 }
 
+std::optional<ContentProviderUnionSlot> ContentProviderUnion::GetSlotForEntry(
+    u64 title_id, ContentRecordType type) const {
+    const auto iter =
+        std::find_if(providers.begin(), providers.end(), [title_id, type](const auto& provider) {
+            return provider.second != nullptr && provider.second->HasEntry(title_id, type);
+        });
+
+    if (iter == providers.end()) {
+        return std::nullopt;
+    }
+
+    return iter->first;
+}
+
 ManualContentProvider::~ManualContentProvider() = default;
 
 void ManualContentProvider::AddEntry(TitleType title_type, ContentRecordType content_type,
diff --git a/src/core/file_sys/registered_cache.h b/src/core/file_sys/registered_cache.h
index ec9052653..4398d63e1 100644
--- a/src/core/file_sys/registered_cache.h
+++ b/src/core/file_sys/registered_cache.h
@@ -199,6 +199,9 @@ public:
         std::optional<TitleType> title_type = {}, std::optional<ContentRecordType> record_type = {},
         std::optional<u64> title_id = {}) const;
 
+    std::optional<ContentProviderUnionSlot> GetSlotForEntry(u64 title_id,
+                                                            ContentRecordType type) const;
+
 private:
     std::map<ContentProviderUnionSlot, ContentProvider*> providers;
 };