mirror of
https://github.com/DarkMatterCore/nxdumptool.git
synced 2024-12-23 00:52:10 +00:00
nso: update read logic
Changes include: * mem: change all references to `Rodata` to `RoData`. * nso: change all references to `Rodata` to `RoData`. * nso: update `NsoModStart` struct. * nso: rename `NsoModuleInfo` struct to `NsoModulePath`. * nso: add `NsoRoDataStart` struct. * nso: update logic in both nsoIsNnSdkVersionWithinSegment() and nsoGetNnSdkVersion() functions to work entirely with memory-based offsets. * nso: rename nsoGetModuleInfoName() to nsoGetModulePath(). * nso: update logic in nsoInitializeContext() to always validate and use the NsoNnSdkVersion block offset from the NsoModStart block.
This commit is contained in:
Pablo Curiel
parent
414780ada8
commit
00497b5181
3 changed files with 90 additions and 68 deletions
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@ -32,9 +32,9 @@ extern "C" {
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typedef enum {
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MemoryProgramSegmentType_None = 0,
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MemoryProgramSegmentType_Text = BIT(0),
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MemoryProgramSegmentType_Rodata = BIT(1),
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MemoryProgramSegmentType_RoData = BIT(1),
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MemoryProgramSegmentType_Data = BIT(2),
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MemoryProgramSegmentType_All = (MemoryProgramSegmentType_Data | MemoryProgramSegmentType_Rodata | MemoryProgramSegmentType_Text),
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MemoryProgramSegmentType_All = (MemoryProgramSegmentType_Data | MemoryProgramSegmentType_RoData | MemoryProgramSegmentType_Text),
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MemoryProgramSegmentType_Limit = (MemoryProgramSegmentType_All + 1) ///< Placed here for convenience.
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} MemoryProgramSegmentType;
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@ -89,17 +89,20 @@ typedef struct {
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NXDT_ASSERT(NsoHeader, 0x100);
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/// Placed at the very start of the decompressed .text segment.
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/// All offsets are relative to the start of this header, but they only apply to uncompressed + contiguous NSO segments.
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typedef struct {
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u32 version; ///< Usually set to 0 or a branch instruction (0x14000002). Set to 1 or 0x14000003 if a NsoNnSdkVersion block is available.
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s32 mod_offset; ///< NsoModHeader block offset (relative to the start of this header). Almost always set to 0x8 (the size of this struct).
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u32 version; ///< Usually set to 0 or a branch instruction (0x14000002). Set to 1 or 0x14000003 if a NsoNnSdkVersion block is available.
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s32 mod_offset; ///< NsoModHeader block offset. Almost always set to 0x8 (the size of this struct), but it could also reference another segment (e.g. .rodata).
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s32 nnsdk_version_offset; ///< NsoNnSdkVersion block offset. Only valid if version is set to 1 or 0x14000003.
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u8 reserved[0x4];
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} NsoModStart;
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NXDT_ASSERT(NsoModStart, 0x8);
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NXDT_ASSERT(NsoModStart, 0x10);
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/// This is essentially a replacement for the PT_DYNAMIC program header available in ELF binaries.
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/// All offsets are signed 32-bit values relative to the start of this header.
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/// This is usually placed at the start of the decompressed .text segment, right after a NsoModStart block.
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/// However, in some NSOs, it can instead be placed at the start of the decompressed .rodata segment, right after its NsoModuleInfo block.
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/// However, in some NSOs, it can instead be placed at the start of the decompressed .rodata segment, right after its NsoRoDataStart block.
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/// In these cases, the 'mod_offset' value from the NsoModStart block will point to an offset within the .rodata segment.
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typedef struct {
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u32 magic; ///< "MOD0".
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@ -123,14 +126,24 @@ typedef struct {
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NXDT_ASSERT(NsoNnSdkVersion, 0xC);
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/// Placed at the start of the decompressed .rodata segment + 0x4.
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/// If the 'name_length' element is greater than 0, 'name' will hold the module name.
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/// If 'zero' is 0 and 'path_length' is greater than 0, 'path' will hold the module path.
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typedef struct {
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u32 name_length;
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char name[];
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} NsoModuleInfo;
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u32 zero; ///< Always 0.
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u32 path_length;
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char path[];
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} NsoModulePath;
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NXDT_ASSERT(NsoModuleInfo, 0x4);
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NXDT_ASSERT(NsoModulePath, 0x8);
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/// Placed at the very start of the decompressed .rodata segment.
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typedef struct {
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union {
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u64 data_segment_offset; ///< Deprecated.
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NsoModulePath module_path;
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};
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} NsoRoDataStart;
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NXDT_ASSERT(NsoRoDataStart, 0x8);
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typedef struct {
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PartitionFileSystemContext *pfs_ctx; ///< PartitionFileSystemContext for the Program NCA FS section #0, which is where this NSO is stored.
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@ -139,7 +152,7 @@ typedef struct {
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NsoHeader nso_header; ///< NSO header.
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char *module_name; ///< Pointer to a dynamically allocated buffer that holds the NSO module name, if available. Otherwise, this is set to NULL.
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NsoNnSdkVersion *nnsdk_version; ///< Pointer to a dynamically allocated buffer that holds the nnSdk version info, if available. Otherwise, this is set to NULL.
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char *module_info_name; ///< Pointer to a dynamically allocated buffer that holds the .rodata module info module name, if available. Otherwise, this is set to NULL.
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char *module_path; ///< Pointer to a dynamically allocated buffer that holds the .rodata module path, if available. Otherwise, this is set to NULL.
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char *rodata_api_info_section; ///< Pointer to a dynamically allocated buffer that holds the .rodata API info section data, if available. Otherwise, this is set to NULL.
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///< Middleware and GuidelineApi entries are retrieved from this section.
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u64 rodata_api_info_section_size; ///< .rodata API info section size, if available. Otherwise, this is set to 0. Kept here for convenience - this is part of 'nso_header'.
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@ -159,7 +172,7 @@ NX_INLINE void nsoFreeContext(NsoContext *nso_ctx)
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if (!nso_ctx) return;
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if (nso_ctx->module_name) free(nso_ctx->module_name);
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if (nso_ctx->nnsdk_version) free(nso_ctx->nnsdk_version);
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if (nso_ctx->module_info_name) free(nso_ctx->module_info_name);
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if (nso_ctx->module_path) free(nso_ctx->module_path);
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if (nso_ctx->rodata_api_info_section) free(nso_ctx->rodata_api_info_section);
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if (nso_ctx->rodata_dynstr_section) free(nso_ctx->rodata_dynstr_section);
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if (nso_ctx->rodata_dynsym_section) free(nso_ctx->rodata_dynsym_section);
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@ -26,7 +26,7 @@
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typedef enum {
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NsoSegmentType_Text = 0,
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NsoSegmentType_Rodata = 1,
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NsoSegmentType_RoData = 1,
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NsoSegmentType_Data = 2,
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NsoSegmentType_Count = 3 ///< Total values supported by this enum.
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} NsoSegmentType;
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@ -43,7 +43,7 @@ typedef struct {
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#if LOG_LEVEL < LOG_LEVEL_NONE
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static const char *g_nsoSegmentTypeNames[NsoSegmentType_Count] = {
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[NsoSegmentType_Text] = ".text",
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[NsoSegmentType_Rodata] = ".rodata",
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[NsoSegmentType_RoData] = ".rodata",
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[NsoSegmentType_Data] = ".data",
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};
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#endif
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@ -55,17 +55,18 @@ static bool nsoGetModuleName(NsoContext *nso_ctx);
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static bool nsoGetSegment(NsoContext *nso_ctx, NsoSegment *out, u8 type);
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NX_INLINE void nsoFreeSegment(NsoSegment *segment);
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NX_INLINE bool nsoIsNnSdkVersionWithinSegment(const NsoModStart *mod_start, const NsoSegment *segment);
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static bool nsoGetNnSdkVersion(NsoContext *nso_ctx, const NsoModStart *mod_start, const NsoSegment *segment);
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NX_INLINE bool nsoIsNnSdkVersionWithinSegment(const NsoModStart *mod_start, const NsoSegment *segment, u32 nnsdk_version_memory_offset);
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static bool nsoGetNnSdkVersion(NsoContext *nso_ctx, const NsoModStart *mod_start, const NsoSegment *segment, u32 nnsdk_version_memory_offset);
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static bool nsoGetModuleInfoName(NsoContext *nso_ctx, const NsoSegment *segment);
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static bool nsoGetModulePath(NsoContext *nso_ctx, const NsoSegment *segment);
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static bool nsoGetSectionFromRodataSegment(NsoContext *nso_ctx, const NsoSectionInfo *section_info, const NsoSegment *segment, u8 **out_ptr);
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static bool nsoGetSectionFromRoDataSegment(NsoContext *nso_ctx, const NsoSectionInfo *section_info, const NsoSegment *segment, u8 **out_ptr);
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bool nsoInitializeContext(NsoContext *out, PartitionFileSystemContext *pfs_ctx, PartitionFileSystemEntry *pfs_entry)
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{
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NsoModStart mod_start = {0};
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NsoSegment segment = {0};
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u32 nnsdk_version_memory_offset = 0;
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bool success = false, dump_nso_header = false, read_nnsdk_version = false;
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if (!out || !pfs_ctx || !ncaStorageIsValidContext(&(pfs_ctx->storage_ctx)) || !pfs_ctx->nca_fs_ctx->nca_ctx || \
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@ -124,7 +125,7 @@ bool nsoInitializeContext(NsoContext *out, PartitionFileSystemContext *pfs_ctx,
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#define NSO_GET_RODATA_SECTION(name) \
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do { \
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if (!nsoGetSectionFromRodataSegment(out, &(out->nso_header.name##_section_info), &segment, (u8**)&(out->rodata_##name##_section))) goto end; \
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if (!nsoGetSectionFromRoDataSegment(out, &(out->nso_header.name##_section_info), &segment, (u8**)&(out->rodata_##name##_section))) goto end; \
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out->rodata_##name##_section_size = out->nso_header.name##_section_info.size; \
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} while(0)
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@ -154,32 +155,37 @@ bool nsoInitializeContext(NsoContext *out, PartitionFileSystemContext *pfs_ctx,
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/* Get NsoModStart block. */
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memcpy(&mod_start, segment.data, sizeof(NsoModStart));
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/* Check if a nnSdk version struct exists within this NRO. */
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read_nnsdk_version = ((mod_start.version & 1) != 0);
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/* Check if a NsoNnSdkVersion block exists within this NRO. */
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read_nnsdk_version = ((mod_start.version & 1) != 0 && mod_start.nnsdk_version_offset >= (s32)sizeof(NsoModStart));
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if (read_nnsdk_version)
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{
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/* Calculate memory offset for the NsoNnSdkVersion block. */
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nnsdk_version_memory_offset = (segment.info.memory_offset + (u32)mod_start.nnsdk_version_offset);
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/* Check if the nnSdk version struct is located within the .text segment. */
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/* If so, we'll retrieve it immediately. */
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if (read_nnsdk_version && nsoIsNnSdkVersionWithinSegment(&mod_start, &segment) && !nsoGetNnSdkVersion(out, &mod_start, &segment)) goto end;
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/* Check if the NsoNnSdkVersion block is located within the .text segment. */
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/* If so, we'll retrieve it immediately. */
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if (nsoIsNnSdkVersionWithinSegment(&mod_start, &segment, nnsdk_version_memory_offset) && !nsoGetNnSdkVersion(out, &mod_start, &segment, nnsdk_version_memory_offset)) goto end;
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}
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/* Get .rodata segment. */
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if (!nsoGetSegment(out, &segment, NsoSegmentType_Rodata)) goto end;
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if (!nsoGetSegment(out, &segment, NsoSegmentType_RoData)) goto end;
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/* Check if we didn't read the nnSdk version struct from the .text segment. */
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/* Check if we didn't read the NsoNnSdkVersion block from the .text segment. */
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if (read_nnsdk_version && !out->nnsdk_version)
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{
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/* Check if the nnSdk version struct is located within the .rodata segment. */
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if (!nsoIsNnSdkVersionWithinSegment(&mod_start, &segment))
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/* Check if the NsoNnSdkVersion block is located within the .rodata segment. */
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if (!nsoIsNnSdkVersionWithinSegment(&mod_start, &segment, nnsdk_version_memory_offset))
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{
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LOG_MSG_ERROR("nnSdk version struct not located within .text or .rodata segments in NSO \"%s\".", out->nso_filename);
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goto end;
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}
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/* Retrieve nnSdk version struct data from the .rodata segment. */
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if (!nsoGetNnSdkVersion(out, &mod_start, &segment)) goto end;
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/* Retrieve NsoNnSdkVersion block from the .rodata segment. */
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if (!nsoGetNnSdkVersion(out, &mod_start, &segment, nnsdk_version_memory_offset)) goto end;
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}
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/* Get module info name from the .rodata segment. */
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if (!nsoGetModuleInfoName(out, &segment)) goto end;
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/* Get module path from the .rodata segment. */
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if (!nsoGetModulePath(out, &segment)) goto end;
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/* Get sections from the .rodata segment. */
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NSO_GET_RODATA_SECTION(api_info);
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@ -238,22 +244,22 @@ static bool nsoGetSegment(NsoContext *nso_ctx, NsoSegment *out, u8 type)
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const char *segment_name = g_nsoSegmentTypeNames[type];
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const NsoSegmentInfo *segment_info = (type == NsoSegmentType_Text ? &(nso_ctx->nso_header.text_segment_info) : \
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(type == NsoSegmentType_Rodata ? &(nso_ctx->nso_header.rodata_segment_info) : &(nso_ctx->nso_header.data_segment_info)));
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(type == NsoSegmentType_RoData ? &(nso_ctx->nso_header.rodata_segment_info) : &(nso_ctx->nso_header.data_segment_info)));
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u32 segment_file_size = (type == NsoSegmentType_Text ? nso_ctx->nso_header.text_file_size : \
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(type == NsoSegmentType_Rodata ? nso_ctx->nso_header.rodata_file_size : nso_ctx->nso_header.data_file_size));
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(type == NsoSegmentType_RoData ? nso_ctx->nso_header.rodata_file_size : nso_ctx->nso_header.data_file_size));
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const u8 *segment_hash = (type == NsoSegmentType_Text ? nso_ctx->nso_header.text_segment_hash : \
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(type == NsoSegmentType_Rodata ? nso_ctx->nso_header.rodata_segment_hash : nso_ctx->nso_header.data_segment_hash));
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(type == NsoSegmentType_RoData ? nso_ctx->nso_header.rodata_segment_hash : nso_ctx->nso_header.data_segment_hash));
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int lz4_res = 0;
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bool compressed = (nso_ctx->nso_header.flags & BIT(type)), verify = (nso_ctx->nso_header.flags & BIT(type + 3));
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u8 *buf = NULL;
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u64 buf_size = (compressed ? LZ4_DECOMPRESS_INPLACE_BUFFER_SIZE(segment_info->size) : segment_info->size);
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u32 buf_size = (compressed ? LZ4_DECOMPRESS_INPLACE_BUFFER_SIZE(segment_info->size) : segment_info->size);
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u8 *read_ptr = NULL;
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u64 read_size = (compressed ? segment_file_size : segment_info->size);
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u32 read_size = (compressed ? segment_file_size : segment_info->size);
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u8 hash[SHA256_HASH_SIZE] = {0};
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@ -265,7 +271,7 @@ static bool nsoGetSegment(NsoContext *nso_ctx, NsoSegment *out, u8 type)
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/* Allocate memory for the segment buffer. */
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if (!(buf = calloc(buf_size, sizeof(u8))))
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{
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LOG_MSG_ERROR("Failed to allocate 0x%lX bytes for the %s segment in NSO \"%s\"!", buf_size, segment_name, nso_ctx->nso_filename);
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LOG_MSG_ERROR("Failed to allocate 0x%X bytes for the %s segment in NSO \"%s\"!", buf_size, segment_name, nso_ctx->nso_filename);
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return NULL;
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}
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@ -317,13 +323,13 @@ NX_INLINE void nsoFreeSegment(NsoSegment *segment)
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memset(segment, 0, sizeof(NsoSegment));
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}
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NX_INLINE bool nsoIsNnSdkVersionWithinSegment(const NsoModStart *mod_start, const NsoSegment *segment)
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NX_INLINE bool nsoIsNnSdkVersionWithinSegment(const NsoModStart *mod_start, const NsoSegment *segment, u32 nnsdk_version_memory_offset)
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{
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return (mod_start && segment && mod_start->mod_offset >= (s32)segment->info.memory_offset && \
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(mod_start->mod_offset + (s32)sizeof(NsoModHeader) + (s32)sizeof(NsoNnSdkVersion)) <= (s32)(segment->info.memory_offset + segment->info.size));
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return (mod_start && segment && nnsdk_version_memory_offset >= segment->info.memory_offset && \
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(nnsdk_version_memory_offset + sizeof(NsoNnSdkVersion)) <= (segment->info.memory_offset + segment->info.size));
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}
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static bool nsoGetNnSdkVersion(NsoContext *nso_ctx, const NsoModStart *mod_start, const NsoSegment *segment)
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static bool nsoGetNnSdkVersion(NsoContext *nso_ctx, const NsoModStart *mod_start, const NsoSegment *segment, u32 nnsdk_version_memory_offset)
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{
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if (!nso_ctx || !mod_start || !segment || !segment->data)
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{
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@ -331,19 +337,18 @@ static bool nsoGetNnSdkVersion(NsoContext *nso_ctx, const NsoModStart *mod_start
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return false;
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}
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/* Return immediately if the nnSdk struct has already been retrieved. */
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if (nso_ctx->nnsdk_version) return 0;
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/* Return immediately if the NsoNnSdkVersion block has already been retrieved. */
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if (nso_ctx->nnsdk_version) return true;
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/* Calculate virtual offset for the nnSdk version struct and check if it is within range. */
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u32 nnsdk_ver_virt_offset = (u32)(mod_start->mod_offset + (s32)sizeof(NsoModHeader));
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if (mod_start->mod_offset < (s32)segment->info.memory_offset || (nnsdk_ver_virt_offset + sizeof(NsoNnSdkVersion)) > (segment->info.memory_offset + segment->info.size))
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/* Make sure we're targetting the right NSO segment. */
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if (!nsoIsNnSdkVersionWithinSegment(mod_start, segment, nnsdk_version_memory_offset))
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{
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LOG_MSG_ERROR("nnSdk version struct isn't located within %s segment in NSO \"%s\"! ([0x%X, 0x%X] not within [0x%X, 0x%X]).", segment->name, nso_ctx->nso_filename, \
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mod_start->mod_offset, nnsdk_ver_virt_offset + (u32)sizeof(NsoNnSdkVersion), segment->info.memory_offset, segment->info.memory_offset + segment->info.size);
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nnsdk_version_memory_offset, nnsdk_version_memory_offset + (u32)sizeof(NsoNnSdkVersion), segment->info.memory_offset, segment->info.memory_offset + segment->info.size);
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return false;
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}
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/* Allocate memory for the nnSdk version struct. */
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/* Allocate memory for the NsoNnSdkVersion block. */
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nso_ctx->nnsdk_version = malloc(sizeof(NsoNnSdkVersion));
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if (!nso_ctx->nnsdk_version)
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{
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@ -351,45 +356,49 @@ static bool nsoGetNnSdkVersion(NsoContext *nso_ctx, const NsoModStart *mod_start
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return false;
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}
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/* Calculate segment-relative offset for the nnSdk version struct and copy its data. */
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u32 nnsdk_ver_phys_offset = (nnsdk_ver_virt_offset - segment->info.memory_offset);
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memcpy(nso_ctx->nnsdk_version, segment->data + nnsdk_ver_phys_offset, sizeof(NsoNnSdkVersion));
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/* Calculate segment-relative offset for the NsoNnSdkVersion block and copy its data. */
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u32 nnsdk_version_segment_offset = (nnsdk_version_memory_offset - segment->info.memory_offset);
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memcpy(nso_ctx->nnsdk_version, segment->data + nnsdk_version_segment_offset, sizeof(NsoNnSdkVersion));
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LOG_MSG_DEBUG("nnSdk version (NSO \"%s\", %s segment, virtual offset 0x%X, physical offset 0x%X): %u.%u.%u.", nso_ctx->nso_filename, segment->name, \
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nnsdk_ver_virt_offset, nnsdk_ver_phys_offset, nso_ctx->nnsdk_version->major, nso_ctx->nnsdk_version->minor, nso_ctx->nnsdk_version->micro);
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nnsdk_version_memory_offset, nnsdk_version_segment_offset, nso_ctx->nnsdk_version->major, nso_ctx->nnsdk_version->minor, nso_ctx->nnsdk_version->micro);
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return true;
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}
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static bool nsoGetModuleInfoName(NsoContext *nso_ctx, const NsoSegment *segment)
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static bool nsoGetModulePath(NsoContext *nso_ctx, const NsoSegment *segment)
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{
|
||||
if (!nso_ctx || !segment || segment->type != NsoSegmentType_Rodata || !segment->data)
|
||||
if (!nso_ctx || !segment || segment->type != NsoSegmentType_RoData || !segment->data)
|
||||
{
|
||||
LOG_MSG_ERROR("Invalid parameters!");
|
||||
return false;
|
||||
}
|
||||
|
||||
const NsoModuleInfo *module_info = (const NsoModuleInfo*)(segment->data + 0x4);
|
||||
if (!module_info->name_length || !module_info->name[0]) return true;
|
||||
/* Get data from the start of the .rodata segment. */
|
||||
const NsoRoDataStart *rodata_start = (const NsoRoDataStart*)segment->data;
|
||||
|
||||
/* Allocate memory for the module info name. */
|
||||
nso_ctx->module_info_name = calloc(module_info->name_length + 1, sizeof(char));
|
||||
if (!nso_ctx->module_info_name)
|
||||
/* Perform sanity checks. */
|
||||
if ((nso_ctx->nso_header.text_segment_info.memory_offset + rodata_start->data_segment_offset) == nso_ctx->nso_header.data_segment_info.memory_offset || \
|
||||
rodata_start->module_path.zero != 0 || !rodata_start->module_path.path_length || !rodata_start->module_path.path[0]) return true;
|
||||
|
||||
/* Allocate memory for the module path string. */
|
||||
nso_ctx->module_path = calloc(rodata_start->module_path.path_length + 1, sizeof(char));
|
||||
if (!nso_ctx->module_path)
|
||||
{
|
||||
LOG_MSG_ERROR("Failed to allocate memory for NSO \"%s\" module info name!", nso_ctx->nso_filename);
|
||||
LOG_MSG_ERROR("Failed to allocate memory for NSO \"%s\" module path!", nso_ctx->nso_filename);
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Copy module info name. */
|
||||
sprintf(nso_ctx->module_info_name, "%.*s", (int)module_info->name_length, module_info->name);
|
||||
LOG_MSG_DEBUG("Module info name (NSO \"%s\"): \"%s\".", nso_ctx->nso_filename, nso_ctx->module_info_name);
|
||||
/* Copy module path string. */
|
||||
sprintf(nso_ctx->module_path, "%.*s", (int)rodata_start->module_path.path_length, rodata_start->module_path.path);
|
||||
LOG_MSG_DEBUG("Module path (NSO \"%s\"): \"%s\".", nso_ctx->nso_filename, nso_ctx->module_path);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool nsoGetSectionFromRodataSegment(NsoContext *nso_ctx, const NsoSectionInfo *section_info, const NsoSegment *segment, u8 **out_ptr)
|
||||
static bool nsoGetSectionFromRoDataSegment(NsoContext *nso_ctx, const NsoSectionInfo *section_info, const NsoSegment *segment, u8 **out_ptr)
|
||||
{
|
||||
if (!nso_ctx || !section_info || !segment || segment->type != NsoSegmentType_Rodata || !segment->data || !out_ptr)
|
||||
if (!nso_ctx || !section_info || !segment || segment->type != NsoSegmentType_RoData || !segment->data || !out_ptr)
|
||||
{
|
||||
LOG_MSG_ERROR("Invalid parameters!");
|
||||
return false;
|
||||
|
|
|
|||
Loading…
Reference in a new issue