Initial commit

1 files changed, 215 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/storage/steam/SDL_steamstorage.c b/contrib/SDL-3.2.8/src/storage/steam/SDL_steamstorage.c
new file mode 100644
index 0000000..8f735f8
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/storage/steam/SDL_steamstorage.c
@@ -0,0 +1,215 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "SDL_internal.h"
+
+#include "../SDL_sysstorage.h"
+
+// !!! FIXME: Async API can use SteamRemoteStorage_ReadFileAsync
+// !!! FIXME: Async API can use SteamRemoteStorage_WriteFileAsync
+
+#define STEAM_PROC(ret, func, parms) \
+    typedef ret (*steamfntype_##func) parms;
+#include "SDL_steamstorage_proc.h"
+
+typedef struct STEAM_RemoteStorage
+{
+    SDL_SharedObject *libsteam_api;
+    #define STEAM_PROC(ret, func, parms) \
+        steamfntype_##func func;
+    #include "SDL_steamstorage_proc.h"
+} STEAM_RemoteStorage;
+
+static bool STEAM_CloseStorage(void *userdata)
+{
+    bool result = true;
+    STEAM_RemoteStorage *steam = (STEAM_RemoteStorage*) userdata;
+    void *steamremotestorage = steam->SteamAPI_SteamRemoteStorage_v016();
+    if (steamremotestorage == NULL) {
+        result = SDL_SetError("SteamRemoteStorage unavailable");
+    } else if (!steam->SteamAPI_ISteamRemoteStorage_EndFileWriteBatch(steamremotestorage)) {
+        result = SDL_SetError("SteamRemoteStorage()->EndFileWriteBatch() failed");
+    }
+    SDL_UnloadObject(steam->libsteam_api);
+    SDL_free(steam);
+    return result;
+}
+
+static bool STEAM_StorageReady(void *userdata)
+{
+    return true;
+}
+
+static bool STEAM_GetStoragePathInfo(void *userdata, const char *path, SDL_PathInfo *info)
+{
+    STEAM_RemoteStorage *steam = (STEAM_RemoteStorage*) userdata;
+    void *steamremotestorage = steam->SteamAPI_SteamRemoteStorage_v016();
+    if (steamremotestorage == NULL) {
+        return SDL_SetError("SteamRemoteStorage unavailable");
+    }
+
+    if (info) {
+        SDL_zerop(info);
+        info->type = SDL_PATHTYPE_FILE;
+        info->size = steam->SteamAPI_ISteamRemoteStorage_GetFileSize(steamremotestorage, path);
+    }
+    return true;
+}
+
+static bool STEAM_ReadStorageFile(void *userdata, const char *path, void *destination, Uint64 length)
+{
+    bool result = false;
+    STEAM_RemoteStorage *steam = (STEAM_RemoteStorage*) userdata;
+    void *steamremotestorage = steam->SteamAPI_SteamRemoteStorage_v016();
+    if (steamremotestorage == NULL) {
+        return SDL_SetError("SteamRemoteStorage unavailable");
+    }
+    if (length > SDL_MAX_SINT32) {
+        return SDL_SetError("SteamRemoteStorage only supports INT32_MAX read size");
+    }
+    if (steam->SteamAPI_ISteamRemoteStorage_FileRead(steamremotestorage, path, destination, (Sint32) length) == length) {
+        result = true;
+    } else {
+        SDL_SetError("SteamAPI_ISteamRemoteStorage_FileRead() failed");
+    }
+    return result;
+}
+
+static bool STEAM_WriteStorageFile(void *userdata, const char *path, const void *source, Uint64 length)
+{
+    bool result = false;
+    STEAM_RemoteStorage *steam = (STEAM_RemoteStorage*) userdata;
+    void *steamremotestorage = steam->SteamAPI_SteamRemoteStorage_v016();
+    if (steamremotestorage == NULL) {
+        return SDL_SetError("SteamRemoteStorage unavailable");
+    }
+    if (length > SDL_MAX_SINT32) {
+        return SDL_SetError("SteamRemoteStorage only supports INT32_MAX write size");
+    }
+    if (steam->SteamAPI_ISteamRemoteStorage_FileWrite(steamremotestorage, path, source, (Sint32) length) == length) {
+        result = true;
+    } else {
+        SDL_SetError("SteamAPI_ISteamRemoteStorage_FileRead() failed");
+    }
+    return result;
+}
+
+static Uint64 STEAM_GetStorageSpaceRemaining(void *userdata)
+{
+    Uint64 total, remaining;
+    STEAM_RemoteStorage *steam = (STEAM_RemoteStorage*) userdata;
+    void *steamremotestorage = steam->SteamAPI_SteamRemoteStorage_v016();
+    if (steamremotestorage == NULL) {
+        SDL_SetError("SteamRemoteStorage unavailable");
+        return 0;
+    }
+    if (!steam->SteamAPI_ISteamRemoteStorage_GetQuota(steamremotestorage, &total, &remaining)) {
+        SDL_SetError("SteamRemoteStorage()->GetQuota failed");
+        return 0;
+    }
+    return remaining;
+}
+
+static const SDL_StorageInterface STEAM_user_iface = {
+    sizeof(SDL_StorageInterface),
+    STEAM_CloseStorage,
+    STEAM_StorageReady,
+    NULL,   // enumerate
+    STEAM_GetStoragePathInfo,
+    STEAM_ReadStorageFile,
+    STEAM_WriteStorageFile,
+    NULL,   // mkdir
+    NULL,   // remove
+    NULL,   // rename
+    NULL,   // copy
+    STEAM_GetStorageSpaceRemaining
+};
+
+static SDL_Storage *STEAM_User_Create(const char *org, const char *app, SDL_PropertiesID props)
+{
+    SDL_Storage *result;
+    STEAM_RemoteStorage *steam;
+    void *steamremotestorage;
+
+    steam = (STEAM_RemoteStorage*) SDL_malloc(sizeof(STEAM_RemoteStorage));
+    if (steam == NULL) {
+        return NULL;
+    }
+
+    steam->libsteam_api = SDL_LoadObject(
+#if defined(_WIN64)
+        "steam_api64.dll"
+#elif defined(_WIN32)
+        "steam_api.dll"
+#elif defined(__APPLE__)
+        "libsteam_api.dylib"
+#else
+        "libsteam_api.so"
+#endif
+    );
+    if (steam->libsteam_api == NULL) {
+        SDL_free(steam);
+        return NULL;
+    }
+
+    #define STEAM_PROC(ret, func, parms) \
+        steam->func = (steamfntype_##func) SDL_LoadFunction(steam->libsteam_api, #func); \
+        if (steam->func == NULL) { \
+            SDL_SetError("Could not load function " #func); \
+            goto steamfail; \
+        }
+    #include "SDL_steamstorage_proc.h"
+
+    steamremotestorage = steam->SteamAPI_SteamRemoteStorage_v016();
+    if (steamremotestorage == NULL) {
+        SDL_SetError("SteamRemoteStorage unavailable");
+        goto steamfail;
+    }
+    if (!steam->SteamAPI_ISteamRemoteStorage_IsCloudEnabledForAccount(steamremotestorage)) {
+        SDL_SetError("Steam cloud is disabled for this user");
+        goto steamfail;
+    }
+    if (!steam->SteamAPI_ISteamRemoteStorage_IsCloudEnabledForApp(steamremotestorage)) {
+        SDL_SetError("Steam cloud is disabled for this application");
+        goto steamfail;
+    }
+    if (!steam->SteamAPI_ISteamRemoteStorage_BeginFileWriteBatch(steamremotestorage)) {
+        SDL_SetError("SteamRemoteStorage()->BeginFileWriteBatch failed");
+        goto steamfail;
+    }
+
+    result = SDL_OpenStorage(&STEAM_user_iface, steam);
+    if (result == NULL) {
+        goto steamfail;
+    }
+    return result;
+
+steamfail:
+    SDL_UnloadObject(steam->libsteam_api);
+    SDL_free(steam);
+    return NULL;
+}
+
+UserStorageBootStrap STEAM_userbootstrap = {
+    "steam",
+    "SDL Steam user storage driver",
+    STEAM_User_Create
+};