libcontentredirection/source/utils.cpp

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#include "content_redirection/redirection.h"
#include <coreinit/debug.h>
#include <coreinit/dynload.h>
#include <sys/iosupport.h>
static OSDynLoad_Module sModuleHandle = nullptr;
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static ContentRedirectionApiErrorType (*sCRAddFSLayer)(CRLayerHandle *, const char *, const char *, FSLayerType) = nullptr;
static ContentRedirectionApiErrorType (*sCRRemoveFSLayer)(CRLayerHandle) = nullptr;
static ContentRedirectionApiErrorType (*sCRSetActive)(CRLayerHandle) = nullptr;
static ContentRedirectionApiErrorType (*sCRGetVersion)(ContentRedirectionVersion *) = nullptr;
static int (*sCRAddDevice)(const devoptab_t *, int *) = nullptr;
static int (*sCRRemoveDevice)(const char *) = nullptr;
static ContentRedirectionVersion sContentRedirectionVersion = CONTENT_REDIRECTION_MODULE_VERSION_ERROR;
ContentRedirectionStatus ContentRedirection_InitLibrary() {
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if (OSDynLoad_Acquire("homebrew_content_redirection", &sModuleHandle) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: OSDynLoad_Acquire failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_NOT_FOUND;
}
if (OSDynLoad_FindExport(sModuleHandle, FALSE, "CRGetVersion", (void **) &sCRGetVersion) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: CRGetVersion failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_MISSING_EXPORT;
}
auto res = ContentRedirection_GetVersion(&sContentRedirectionVersion);
if (res != CONTENT_REDIRECTION_RESULT_SUCCESS) {
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return CONTENT_REDIRECTION_RESULT_UNSUPPORTED_VERSION;
}
if (OSDynLoad_FindExport(sModuleHandle, FALSE, "CRAddFSLayer", (void **) &sCRAddFSLayer) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: CRAddFSLayer failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_MISSING_EXPORT;
}
if (OSDynLoad_FindExport(sModuleHandle, FALSE, "CRRemoveFSLayer", (void **) &sCRRemoveFSLayer) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: CRRemoveFSLayer failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_MISSING_EXPORT;
}
if (OSDynLoad_FindExport(sModuleHandle, FALSE, "CRSetActive", (void **) &sCRSetActive) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: CRSetActive failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_MISSING_EXPORT;
}
if (OSDynLoad_FindExport(sModuleHandle, FALSE, "CRAddDevice", (void **) &sCRAddDevice) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: CRAddDevice failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_MISSING_EXPORT;
}
if (OSDynLoad_FindExport(sModuleHandle, FALSE, "CRRemoveDevice", (void **) &sCRRemoveDevice) != OS_DYNLOAD_OK) {
OSReport("ContentRedirection_Init: CRRemoveDevice failed.\n");
return CONTENT_REDIRECTION_RESULT_MODULE_MISSING_EXPORT;
}
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}
ContentRedirectionApiErrorType GetVersion(ContentRedirectionVersion *);
ContentRedirectionStatus ContentRedirection_GetVersion(ContentRedirectionVersion *outVariable) {
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if (sCRGetVersion == nullptr) {
return CONTENT_REDIRECTION_RESULT_LIB_UNINITIALIZED;
}
auto res = reinterpret_cast<decltype(&GetVersion)>(sCRGetVersion)(outVariable);
if (res == CONTENT_REDIRECTION_API_ERROR_NONE) {
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}
return res == CONTENT_REDIRECTION_API_ERROR_INVALID_ARG ? CONTENT_REDIRECTION_RESULT_INVALID_ARGUMENT : CONTENT_REDIRECTION_RESULT_UNKNOWN_ERROR;
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}
ContentRedirectionApiErrorType AddFSLayer(CRLayerHandle *, const char *, const char *, FSLayerType);
ContentRedirectionStatus ContentRedirection_AddFSLayer(CRLayerHandle *handlePtr, const char *layerName, const char *replacementDir, FSLayerType layerType) {
if (sCRAddFSLayer == nullptr) {
return CONTENT_REDIRECTION_RESULT_LIB_UNINITIALIZED;
}
auto res = reinterpret_cast<decltype(&AddFSLayer)>(sCRAddFSLayer)(handlePtr, layerName, replacementDir, layerType);
if (res == CONTENT_REDIRECTION_API_ERROR_NONE) {
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}
switch (res) {
case CONTENT_REDIRECTION_API_ERROR_INVALID_ARG:
return CONTENT_REDIRECTION_RESULT_INVALID_ARGUMENT;
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case CONTENT_REDIRECTION_API_ERROR_NO_MEMORY:
return CONTENT_REDIRECTION_RESULT_NO_MEMORY;
case CONTENT_REDIRECTION_API_ERROR_UNKNOWN_FS_LAYER_TYPE:
return CONTENT_REDIRECTION_RESULT_UNKNOWN_FS_LAYER_TYPE;
default:
return CONTENT_REDIRECTION_RESULT_UNKNOWN_ERROR;
}
}
ContentRedirectionApiErrorType RemoveFSLayer(CRLayerHandle);
ContentRedirectionStatus ContentRedirection_RemoveFSLayer(CRLayerHandle handlePtr) {
if (sCRAddFSLayer == nullptr) {
return CONTENT_REDIRECTION_RESULT_LIB_UNINITIALIZED;
}
auto res = reinterpret_cast<decltype(&RemoveFSLayer)>(sCRRemoveFSLayer)(handlePtr);
if (res == CONTENT_REDIRECTION_API_ERROR_NONE) {
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}
if (res == CONTENT_REDIRECTION_API_ERROR_LAYER_NOT_FOUND) {
return CONTENT_REDIRECTION_RESULT_LAYER_NOT_FOUND;
}
return CONTENT_REDIRECTION_RESULT_UNKNOWN_ERROR;
}
ContentRedirectionApiErrorType SetActive(CRLayerHandle, bool);
ContentRedirectionStatus ContentRedirection_SetActive(CRLayerHandle handle, bool active) {
if (sCRAddFSLayer == nullptr) {
return CONTENT_REDIRECTION_RESULT_LIB_UNINITIALIZED;
}
auto res = reinterpret_cast<decltype(&SetActive)>(sCRSetActive)(handle, active);
if (res == CONTENT_REDIRECTION_API_ERROR_NONE) {
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}
if (res == CONTENT_REDIRECTION_API_ERROR_LAYER_NOT_FOUND) {
return CONTENT_REDIRECTION_RESULT_LAYER_NOT_FOUND;
}
return CONTENT_REDIRECTION_RESULT_UNKNOWN_ERROR;
}
ContentRedirectionStatus ContentRedirection_AddDevice(const devoptab_t *device, int *resultOut) {
if (sCRAddFSLayer == nullptr) {
return CONTENT_REDIRECTION_RESULT_LIB_UNINITIALIZED;
}
if (resultOut == nullptr) {
return CONTENT_REDIRECTION_RESULT_INVALID_ARGUMENT;
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}
*resultOut = reinterpret_cast<decltype(&AddDevice)>(sCRAddDevice)(device);
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}
ContentRedirectionStatus ContentRedirection_RemoveDevice(const char *name, int *resultOut) {
if (sCRAddFSLayer == nullptr) {
return CONTENT_REDIRECTION_RESULT_LIB_UNINITIALIZED;
}
if (resultOut == nullptr) {
return CONTENT_REDIRECTION_RESULT_INVALID_ARGUMENT;
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}
*resultOut = reinterpret_cast<decltype(&RemoveDevice)>(sCRRemoveDevice)(name);
return CONTENT_REDIRECTION_RESULT_SUCCESS;
}