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-rw-r--r--NorthstarDLL/mods/autodownload/moddownloader.cpp552
-rw-r--r--NorthstarDLL/mods/autodownload/moddownloader.h141
2 files changed, 693 insertions, 0 deletions
diff --git a/NorthstarDLL/mods/autodownload/moddownloader.cpp b/NorthstarDLL/mods/autodownload/moddownloader.cpp
new file mode 100644
index 00000000..9c1489c6
--- /dev/null
+++ b/NorthstarDLL/mods/autodownload/moddownloader.cpp
@@ -0,0 +1,552 @@
+#include "moddownloader.h"
+#include <rapidjson/fwd.h>
+#include <mz_strm_mem.h>
+#include <mz.h>
+#include <mz_strm.h>
+#include <mz_zip.h>
+#include <mz_compat.h>
+#include <thread>
+#include <future>
+#include <bcrypt.h>
+#include <winternl.h>
+#include <fstream>
+
+ModDownloader* g_pModDownloader;
+
+ModDownloader::ModDownloader()
+{
+ spdlog::info("Mod downloader initialized");
+
+ // Initialise mods list URI
+ char* clachar = strstr(GetCommandLineA(), CUSTOM_MODS_URL_FLAG);
+ if (clachar)
+ {
+ std::string url;
+ int iFlagStringLength = strlen(CUSTOM_MODS_URL_FLAG);
+ std::string cla = std::string(clachar);
+ if (strncmp(cla.substr(iFlagStringLength, 1).c_str(), "\"", 1))
+ {
+ int space = cla.find(" ");
+ url = cla.substr(iFlagStringLength, space - iFlagStringLength);
+ }
+ else
+ {
+ std::string quote = "\"";
+ int quote1 = cla.find(quote);
+ int quote2 = (cla.substr(quote1 + 1)).find(quote);
+ url = cla.substr(quote1 + 1, quote2);
+ }
+ spdlog::info("Found custom verified mods URL in command line argument: {}", url);
+ modsListUrl = strdup(url.c_str());
+ }
+ else
+ {
+ spdlog::info("Custom verified mods URL not found in command line arguments, using default URL.");
+ modsListUrl = strdup(DEFAULT_MODS_LIST_URL);
+ }
+}
+
+size_t WriteToString(void* ptr, size_t size, size_t count, void* stream)
+{
+ ((std::string*)stream)->append((char*)ptr, 0, size * count);
+ return size * count;
+}
+
+void ModDownloader::FetchModsListFromAPI()
+{
+ std::thread requestThread(
+ [this]()
+ {
+ CURLcode result;
+ CURL* easyhandle;
+ rapidjson::Document verifiedModsJson;
+ std::string url = modsListUrl;
+
+ curl_global_init(CURL_GLOBAL_ALL);
+ easyhandle = curl_easy_init();
+ std::string readBuffer;
+
+ // Fetching mods list from GitHub repository
+ curl_easy_setopt(easyhandle, CURLOPT_CUSTOMREQUEST, "GET");
+ curl_easy_setopt(easyhandle, CURLOPT_TIMEOUT, 30L);
+ curl_easy_setopt(easyhandle, CURLOPT_URL, url.c_str());
+ curl_easy_setopt(easyhandle, CURLOPT_FAILONERROR, 1L);
+ curl_easy_setopt(easyhandle, CURLOPT_WRITEDATA, &readBuffer);
+ curl_easy_setopt(easyhandle, CURLOPT_WRITEFUNCTION, WriteToString);
+ result = curl_easy_perform(easyhandle);
+
+ if (result == CURLcode::CURLE_OK)
+ {
+ spdlog::info("Mods list successfully fetched.");
+ }
+ else
+ {
+ spdlog::error("Fetching mods list failed: {}", curl_easy_strerror(result));
+ goto REQUEST_END_CLEANUP;
+ }
+
+ // Load mods list into local state
+ spdlog::info("Loading mods configuration...");
+ verifiedModsJson.Parse(readBuffer);
+ for (auto i = verifiedModsJson.MemberBegin(); i != verifiedModsJson.MemberEnd(); ++i)
+ {
+ std::string name = i->name.GetString();
+ std::string dependency = i->value["DependencyPrefix"].GetString();
+
+ std::unordered_map<std::string, VerifiedModVersion> modVersions;
+ rapidjson::Value& versions = i->value["Versions"];
+ assert(versions.IsArray());
+ for (auto& attribute : versions.GetArray())
+ {
+ assert(attribute.IsObject());
+ std::string version = attribute["Version"].GetString();
+ std::string checksum = attribute["Checksum"].GetString();
+ modVersions.insert({version, {.checksum = checksum}});
+ }
+
+ VerifiedModDetails modConfig = {.dependencyPrefix = dependency, .versions = modVersions};
+ verifiedMods.insert({name, modConfig});
+ spdlog::info("==> Loaded configuration for mod \"" + name + "\"");
+ }
+
+ spdlog::info("Done loading verified mods list.");
+
+ REQUEST_END_CLEANUP:
+ curl_easy_cleanup(easyhandle);
+ });
+ requestThread.detach();
+}
+
+size_t WriteData(void* ptr, size_t size, size_t nmemb, FILE* stream)
+{
+ size_t written;
+ written = fwrite(ptr, size, nmemb, stream);
+ return written;
+}
+
+void FetchModSync(std::promise<std::optional<fs::path>>&& p, std::string_view url, fs::path downloadPath)
+{
+ bool failed = false;
+ FILE* fp = fopen(downloadPath.generic_string().c_str(), "wb");
+ CURLcode result;
+ CURL* easyhandle;
+ easyhandle = curl_easy_init();
+
+ curl_easy_setopt(easyhandle, CURLOPT_TIMEOUT, 30L);
+ curl_easy_setopt(easyhandle, CURLOPT_URL, url.data());
+ curl_easy_setopt(easyhandle, CURLOPT_FAILONERROR, 1L);
+ curl_easy_setopt(easyhandle, CURLOPT_WRITEDATA, fp);
+ curl_easy_setopt(easyhandle, CURLOPT_WRITEFUNCTION, WriteData);
+ result = curl_easy_perform(easyhandle);
+
+ if (result == CURLcode::CURLE_OK)
+ {
+ spdlog::info("Mod archive successfully fetched.");
+ goto REQUEST_END_CLEANUP;
+ }
+ else
+ {
+ spdlog::error("Fetching mod archive failed: {}", curl_easy_strerror(result));
+ failed = true;
+ goto REQUEST_END_CLEANUP;
+ }
+
+REQUEST_END_CLEANUP:
+ curl_easy_cleanup(easyhandle);
+ fclose(fp);
+ p.set_value(failed ? std::optional<fs::path>() : std::optional<fs::path>(downloadPath));
+}
+
+std::optional<fs::path> ModDownloader::FetchModFromDistantStore(std::string_view modName, std::string_view modVersion)
+{
+ // Retrieve mod prefix from local mods list, or use mod name as mod prefix if bypass flag is set
+ std::string modPrefix = strstr(GetCommandLineA(), VERIFICATION_FLAG) ? modName.data() : verifiedMods[modName.data()].dependencyPrefix;
+ // Build archive distant URI
+ std::string archiveName = std::format("{}-{}.zip", modPrefix, modVersion.data());
+ std::string url = STORE_URL + archiveName;
+ spdlog::info(std::format("Fetching mod archive from {}", url));
+
+ // Download destination
+ std::filesystem::path downloadPath = std::filesystem::temp_directory_path() / archiveName;
+ spdlog::info(std::format("Downloading archive to {}", downloadPath.generic_string()));
+
+ // Download the actual archive
+ std::promise<std::optional<fs::path>> promise;
+ auto f = promise.get_future();
+ std::thread t(&FetchModSync, std::move(promise), std::string_view(url), downloadPath);
+ t.join();
+ return f.get();
+}
+
+bool ModDownloader::IsModLegit(fs::path modPath, std::string_view expectedChecksum)
+{
+ if (strstr(GetCommandLineA(), VERIFICATION_FLAG))
+ {
+ spdlog::info("Bypassing mod verification due to flag set up.");
+ return true;
+ }
+
+ NTSTATUS status;
+ BCRYPT_ALG_HANDLE algorithmHandle = NULL;
+ BCRYPT_HASH_HANDLE hashHandle = NULL;
+ std::vector<uint8_t> hash;
+ DWORD hashLength = 0;
+ DWORD resultLength = 0;
+ std::stringstream ss;
+
+ constexpr size_t bufferSize {1 << 12};
+ std::vector<char> buffer(bufferSize, '\0');
+ std::ifstream fp(modPath.generic_string(), std::ios::binary);
+
+ // Open an algorithm handle
+ // This sample passes BCRYPT_HASH_REUSABLE_FLAG with BCryptAlgorithmProvider(...) to load a provider which supports reusable hash
+ status = BCryptOpenAlgorithmProvider(
+ &algorithmHandle, // Alg Handle pointer
+ BCRYPT_SHA256_ALGORITHM, // Cryptographic Algorithm name (null terminated unicode string)
+ NULL, // Provider name; if null, the default provider is loaded
+ BCRYPT_HASH_REUSABLE_FLAG); // Flags; Loads a provider which supports reusable hash
+ if (!NT_SUCCESS(status))
+ {
+ goto cleanup;
+ }
+
+ // Obtain the length of the hash
+ status = BCryptGetProperty(
+ algorithmHandle, // Handle to a CNG object
+ BCRYPT_HASH_LENGTH, // Property name (null terminated unicode string)
+ (PBYTE)&hashLength, // Address of the output buffer which recieves the property value
+ sizeof(hashLength), // Size of the buffer in bytes
+ &resultLength, // Number of bytes that were copied into the buffer
+ 0); // Flags
+ if (!NT_SUCCESS(status))
+ {
+ // goto cleanup;
+ return false;
+ }
+
+ // Create a hash handle
+ status = BCryptCreateHash(
+ algorithmHandle, // Handle to an algorithm provider
+ &hashHandle, // A pointer to a hash handle - can be a hash or hmac object
+ NULL, // Pointer to the buffer that recieves the hash/hmac object
+ 0, // Size of the buffer in bytes
+ NULL, // A pointer to a key to use for the hash or MAC
+ 0, // Size of the key in bytes
+ 0); // Flags
+ if (!NT_SUCCESS(status))
+ {
+ goto cleanup;
+ }
+
+ // Hash archive content
+ if (!fp.is_open())
+ {
+ spdlog::error("Unable to open archive.");
+ return false;
+ }
+ fp.seekg(0, fp.beg);
+ while (fp.good())
+ {
+ fp.read(buffer.data(), bufferSize);
+ std::streamsize bytesRead = fp.gcount();
+ if (bytesRead > 0)
+ {
+ status = BCryptHashData(hashHandle, (PBYTE)buffer.data(), bytesRead, 0);
+ if (!NT_SUCCESS(status))
+ {
+ goto cleanup;
+ }
+ }
+ }
+
+ hash = std::vector<uint8_t>(hashLength);
+
+ // Obtain the hash of the message(s) into the hash buffer
+ status = BCryptFinishHash(
+ hashHandle, // Handle to the hash or MAC object
+ hash.data(), // A pointer to a buffer that receives the hash or MAC value
+ hashLength, // Size of the buffer in bytes
+ 0); // Flags
+ if (!NT_SUCCESS(status))
+ {
+ goto cleanup;
+ }
+
+ // Convert hash to string using bytes raw values
+ ss << std::hex << std::setfill('0');
+ for (int i = 0; i < hashLength; i++)
+ {
+ ss << std::hex << std::setw(2) << static_cast<int>(hash.data()[i]);
+ }
+
+ spdlog::info("Expected checksum: {}", expectedChecksum.data());
+ spdlog::info("Computed checksum: {}", ss.str());
+ return expectedChecksum.compare(ss.str()) == 0;
+
+cleanup:
+ if (NULL != hashHandle)
+ {
+ BCryptDestroyHash(hashHandle); // Handle to hash/MAC object which needs to be destroyed
+ }
+
+ if (NULL != algorithmHandle)
+ {
+ BCryptCloseAlgorithmProvider(
+ algorithmHandle, // Handle to the algorithm provider which needs to be closed
+ 0); // Flags
+ }
+
+ return false;
+}
+
+bool ModDownloader::IsModAuthorized(std::string_view modName, std::string_view modVersion)
+{
+ if (strstr(GetCommandLineA(), VERIFICATION_FLAG))
+ {
+ spdlog::info("Bypassing mod verification due to flag set up.");
+ return true;
+ }
+
+ if (!verifiedMods.contains(modName.data()))
+ {
+ return false;
+ }
+
+ std::unordered_map<std::string, VerifiedModVersion> versions = verifiedMods[modName.data()].versions;
+ return versions.count(modVersion.data()) != 0;
+}
+
+void ModDownloader::ExtractMod(fs::path modPath)
+{
+ unzFile file;
+ std::string name;
+ fs::path modDirectory;
+
+ file = unzOpen(modPath.generic_string().c_str());
+ if (file == NULL)
+ {
+ spdlog::error("Cannot open archive located at {}.", modPath.generic_string());
+ goto EXTRACTION_CLEANUP;
+ }
+
+ unz_global_info64 gi;
+ int status;
+ status = unzGetGlobalInfo64(file, &gi);
+ if (status != UNZ_OK)
+ {
+ spdlog::error("Failed getting information from archive (error code: {})", status);
+ goto EXTRACTION_CLEANUP;
+ }
+
+ // Mod directory name (removing the ".zip" fom the archive name)
+ name = modPath.filename().string();
+ name = name.substr(0, name.length() - 4);
+ modDirectory = GetRemoteModFolderPath() / name;
+
+ for (int i = 0; i < gi.number_entry; i++)
+ {
+ char zipFilename[256];
+ unz_file_info64 fileInfo;
+ status = unzGetCurrentFileInfo64(file, &fileInfo, zipFilename, sizeof(zipFilename), NULL, 0, NULL, 0);
+
+ // Extract file
+ {
+ std::error_code ec;
+ fs::path fileDestination = modDirectory / zipFilename;
+ spdlog::info("=> {}", fileDestination.generic_string());
+
+ // Create parent directory if needed
+ if (!std::filesystem::exists(fileDestination.parent_path()))
+ {
+ spdlog::info("Parent directory does not exist, creating it.", fileDestination.generic_string());
+ if (!std::filesystem::create_directories(fileDestination.parent_path(), ec) && ec.value() != 0)
+ {
+ spdlog::error("Parent directory ({}) creation failed.", fileDestination.parent_path().generic_string());
+ goto EXTRACTION_CLEANUP;
+ }
+ }
+
+ // If current file is a directory, create directory...
+ if (fileDestination.generic_string().back() == '/')
+ {
+ // Create directory
+ if (!std::filesystem::create_directory(fileDestination, ec) && ec.value() != 0)
+ {
+ spdlog::error("Directory creation failed: {}", ec.message());
+ goto EXTRACTION_CLEANUP;
+ }
+ }
+ // ...else create file
+ else
+ {
+ // Ensure file is in zip archive
+ if (unzLocateFile(file, zipFilename, 0) != UNZ_OK)
+ {
+ spdlog::error("File \"{}\" was not found in archive.", zipFilename);
+ goto EXTRACTION_CLEANUP;
+ }
+
+ // Create file
+ const int bufferSize = 8192;
+ void* buffer;
+ int err = UNZ_OK;
+ FILE* fout = NULL;
+
+ // Open zip file to prepare its extraction
+ status = unzOpenCurrentFile(file);
+ if (status != UNZ_OK)
+ {
+ spdlog::error("Could not open file {} from archive.", zipFilename);
+ goto EXTRACTION_CLEANUP;
+ }
+
+ // Create destination file
+ fout = fopen(fileDestination.generic_string().c_str(), "wb");
+ if (fout == NULL)
+ {
+ spdlog::error("Failed creating destination file.");
+ goto EXTRACTION_CLEANUP;
+ }
+
+ // Allocate memory for buffer
+ buffer = (void*)malloc(bufferSize);
+ if (buffer == NULL)
+ {
+ spdlog::error("Error while allocating memory.");
+ goto EXTRACTION_CLEANUP;
+ }
+
+ // Extract file to destination
+ do
+ {
+ err = unzReadCurrentFile(file, buffer, bufferSize);
+ if (err < 0)
+ {
+ spdlog::error("error {} with zipfile in unzReadCurrentFile", err);
+ break;
+ }
+ if (err > 0)
+ {
+ if (fwrite(buffer, (unsigned)err, 1, fout) != 1)
+ {
+ spdlog::error("error in writing extracted file\n");
+ err = UNZ_ERRNO;
+ break;
+ }
+ }
+ } while (err > 0);
+
+ if (err != UNZ_OK)
+ {
+ spdlog::error("An error occurred during file extraction (code: {})", err);
+ goto EXTRACTION_CLEANUP;
+ }
+ err = unzCloseCurrentFile(file);
+ if (err != UNZ_OK)
+ {
+ spdlog::error("error {} with zipfile in unzCloseCurrentFile", err);
+ }
+
+ // Cleanup
+ if (fout)
+ fclose(fout);
+ }
+ }
+
+ // Go to next file
+ if ((i + 1) < gi.number_entry)
+ {
+ status = unzGoToNextFile(file);
+ if (status != UNZ_OK)
+ {
+ spdlog::error("Error while browsing archive files (error code: {}).", status);
+ goto EXTRACTION_CLEANUP;
+ }
+ }
+ }
+
+EXTRACTION_CLEANUP:
+ if (unzClose(file) != MZ_OK)
+ {
+ spdlog::error("Failed closing mod archive after extraction.");
+ }
+}
+
+void ModDownloader::DownloadMod(std::string modName, std::string modVersion)
+{
+ // Check if mod can be auto-downloaded
+ if (!IsModAuthorized(std::string_view(modName), std::string_view(modVersion)))
+ {
+ spdlog::warn("Tried to download a mod that is not verified, aborting.");
+ return;
+ }
+
+ std::thread requestThread(
+ [this, modName, modVersion]()
+ {
+ fs::path archiveLocation;
+
+ // Download mod archive
+ std::string expectedHash = verifiedMods[modName].versions[modVersion].checksum;
+ std::optional<fs::path> fetchingResult = FetchModFromDistantStore(std::string_view(modName), std::string_view(modVersion));
+ if (!fetchingResult.has_value())
+ {
+ spdlog::error("Something went wrong while fetching archive, aborting.");
+ goto REQUEST_END_CLEANUP;
+ }
+ archiveLocation = fetchingResult.value();
+ if (!IsModLegit(archiveLocation, std::string_view(expectedHash)))
+ {
+ spdlog::warn("Archive hash does not match expected checksum, aborting.");
+ goto REQUEST_END_CLEANUP;
+ }
+
+ // Extract downloaded mod archive
+ ExtractMod(archiveLocation);
+
+ REQUEST_END_CLEANUP:
+ try
+ {
+ remove(archiveLocation);
+ }
+ catch (const std::exception& a)
+ {
+ spdlog::error("Error while removing downloaded archive: {}", a.what());
+ }
+
+ spdlog::info("Done downloading {}.", modName);
+ });
+
+ requestThread.detach();
+}
+
+void ConCommandFetchVerifiedMods(const CCommand& args)
+{
+ g_pModDownloader->FetchModsListFromAPI();
+}
+
+void ConCommandDownloadMod(const CCommand& args)
+{
+ if (args.ArgC() < 3)
+ {
+ return;
+ }
+
+ // Split arguments string by whitespaces (https://stackoverflow.com/a/5208977)
+ std::string buffer;
+ std::stringstream ss(args.ArgS());
+ std::vector<std::string> tokens;
+ while (ss >> buffer)
+ tokens.push_back(buffer);
+
+ std::string modName = tokens[0];
+ std::string modVersion = tokens[1];
+ g_pModDownloader->DownloadMod(modName, modVersion);
+}
+
+ON_DLL_LOAD_RELIESON("engine.dll", ModDownloader, (ConCommand), (CModule module))
+{
+ g_pModDownloader = new ModDownloader();
+ RegisterConCommand("fetch_verified_mods", ConCommandFetchVerifiedMods, "fetches verified mods list from GitHub repository", FCVAR_NONE);
+ RegisterConCommand("download_mod", ConCommandDownloadMod, "downloads a mod from remote store", FCVAR_NONE);
+}
diff --git a/NorthstarDLL/mods/autodownload/moddownloader.h b/NorthstarDLL/mods/autodownload/moddownloader.h
new file mode 100644
index 00000000..edaf090b
--- /dev/null
+++ b/NorthstarDLL/mods/autodownload/moddownloader.h
@@ -0,0 +1,141 @@
+class ModDownloader
+{
+ private:
+ const char* VERIFICATION_FLAG = "-disablemodverification";
+ const char* CUSTOM_MODS_URL_FLAG = "-customverifiedurl=";
+ const char* STORE_URL = "https://gcdn.thunderstore.io/live/repository/packages/";
+ const char* DEFAULT_MODS_LIST_URL = "https://raw.githubusercontent.com/R2Northstar/VerifiedMods/master/mods.json";
+ char* modsListUrl;
+
+ struct VerifiedModVersion
+ {
+ std::string checksum;
+ };
+ struct VerifiedModDetails
+ {
+ std::string dependencyPrefix;
+ std::unordered_map<std::string, VerifiedModVersion> versions = {};
+ };
+ std::unordered_map<std::string, VerifiedModDetails> verifiedMods = {};
+
+ /**
+ * Downloads a mod archive from distant store.
+ *
+ * This rebuilds the URI of the mod archive using both a predefined store URI
+ * and the mod dependency string from the `verifiedMods` variable, or using
+ * input mod name as mod dependency string if bypass flag is set up; fetched
+ * archive is then stored in a temporary location.
+ *
+ * If something went wrong during archive download, this will return an empty
+ * optional object.
+ *
+ * @param modName name of the mod to be downloaded
+ * @param modVersion version of the mod to be downloaded
+ * @returns location of the downloaded archive
+ */
+ std::optional<fs::path> FetchModFromDistantStore(std::string_view modName, std::string_view modVersion);
+
+ /**
+ * Checks whether a mod is verified.
+ *
+ * A mod is deemed verified/authorized through a manual validation process that is
+ * described here: https://github.com/R2Northstar/VerifiedMods; in practice, a mod
+ * is considered authorized if their name AND exact version appear in the
+ * `verifiedMods` variable.
+ *
+ * @param modName name of the mod to be checked
+ * @param modVersion version of the mod to be checked, must follow semantic versioning
+ * @returns whether the mod is authorized and can be auto-downloaded
+ */
+ bool IsModAuthorized(std::string_view modName, std::string_view modVersion);
+
+ /**
+ * Tells if a mod archive has not been corrupted.
+ *
+ * The mod validation procedure includes computing the SHA256 hash of the final
+ * archive, which is stored in the verified mods list. This hash is used by this
+ * very method to ensure the archive downloaded from the Internet is the exact
+ * same that has been manually verified.
+ *
+ * @param modPath path of the archive to check
+ * @param expectedChecksum checksum the archive should have
+ * @returns whether archive is legit
+ */
+ bool IsModLegit(fs::path modPath, std::string_view expectedChecksum);
+
+ /**
+ * Extracts a mod archive to the game folder.
+ *
+ * This extracts a downloaded mod archive from its original location to the
+ * current game profile, in the remote mods folder.
+ *
+ * @param modPath location of the downloaded archive
+ * @returns nothing
+ */
+ void ExtractMod(fs::path modPath);
+
+ public:
+ ModDownloader();
+
+ /**
+ * Retrieves the verified mods list from the central authority.
+ *
+ * The Northstar auto-downloading feature does NOT allow automatically installing
+ * all mods for various (notably security) reasons; mods that are candidate to
+ * auto-downloading are rather listed on a GitHub repository
+ * (https://raw.githubusercontent.com/R2Northstar/VerifiedMods/master/mods.json),
+ * which this method gets via a HTTP call to load into local state.
+ *
+ * If list fetching fails, local mods list will be initialized as empty, thus
+ * preventing any mod from being auto-downloaded.
+ *
+ * @returns nothing
+ */
+ void FetchModsListFromAPI();
+
+ /**
+ * Downloads a given mod from Thunderstore API to local game profile.
+ *
+ * @param modName name of the mod to be downloaded
+ * @param modVersion version of the mod to be downloaded
+ * @returns nothing
+ **/
+ void DownloadMod(std::string modName, std::string modVersion);
+
+ enum ModInstallState
+ {
+ // Normal installation process
+ DOWNLOADING,
+ CHECKSUMING,
+ EXTRACTING,
+ DONE, // Everything went great, mod can be used in-game
+
+ // Errors
+ FAILED, // Generic error message, should be avoided as much as possible
+ FAILED_READING_ARCHIVE,
+ FAILED_WRITING_TO_DISK,
+ MOD_FETCHING_FAILED,
+ MOD_CORRUPTED, // Downloaded archive checksum does not match verified hash
+ NO_DISK_SPACE_AVAILABLE,
+ NOT_FOUND // Mod is not currently being auto-downloaded
+ };
+
+ struct MOD_STATE
+ {
+ ModInstallState state;
+ int progress;
+ int total;
+ float ratio;
+ } modState = {};
+
+ /**
+ * Cancels installation of the mod.
+ *
+ * Prevents installation of the mod currently being installed, no matter the install
+ * progress (downloading, checksuming, extracting), and frees all resources currently
+ * being used in this purpose.
+ *
+ * @returns nothing
+ */
+ void CancelDownload();
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 00:44:44 +0000