mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-14 16:06:56 +00:00
121 lines
No EOL
3.6 KiB
C++
121 lines
No EOL
3.6 KiB
C++
#include <switch.h>
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#include <algorithm>
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#include <cstdio>
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#include <cstring>
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#include "sha256.h"
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#include "ldr_nro.hpp"
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#include "ldr_registration.hpp"
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#include "ldr_map.hpp"
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#include "ldr_random.hpp"
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Result NroUtils::ValidateNrrHeader(NrrHeader *header, u64 size, u64 title_id_min) {
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if (header->magic != MAGIC_NRR0) {
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return 0x6A09;
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}
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if (header->nrr_size != size) {
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return 0xA409;
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}
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/* TODO: Check NRR signature. */
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if (false) {
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return 0x6C09;
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}
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if (header->title_id_min != title_id_min) {
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return 0x6A09;
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}
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return 0x0;
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}
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Result NroUtils::LoadNro(Registration::Process *target_proc, Handle process_h, u64 nro_heap_address, u64 nro_heap_size, u64 bss_heap_address, u64 bss_heap_size, u64 *out_address) {
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NroHeader *nro;
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MappedCodeMemory mcm_nro = {0};
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MappedCodeMemory mcm_bss = {0};
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unsigned int i;
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Result rc;
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u8 nro_hash[0x20];
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SHA256_CTX sha_ctx;
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/* Ensure there is an available NRO slot. */
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for (i = 0; i < NRO_INFO_MAX; i++) {
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if (!target_proc->nro_infos[i].in_use) {
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break;
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}
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}
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if (i >= NRO_INFO_MAX) {
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return 0x6E09;
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}
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for (i = 0; i < 0x200; i++) {
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if (R_SUCCEEDED(mcm_nro.Open(process_h, target_proc->is_64_bit_addspace, nro_heap_address, nro_heap_size))) {
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if (R_SUCCEEDED(mcm_bss.OpenAtAddress(process_h, bss_heap_address, bss_heap_size, mcm_nro.code_memory_address + nro_heap_size))) {
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break;
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} else {
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mcm_nro.Close();
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}
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}
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}
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if (i >= 0x200) {
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return 0x6609;
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}
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if (R_FAILED((rc = mcm_nro.Map()))) {
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goto LOAD_NRO_END;
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}
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nro = (NroHeader *)mcm_nro.mapped_address;
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if (nro->magic != MAGIC_NRO0) {
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rc = 0x6809;
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goto LOAD_NRO_END;
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}
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if (nro->nro_size != nro_heap_size || nro->bss_size != bss_heap_size) {
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rc = 0x6809;
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goto LOAD_NRO_END;
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}
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if ((nro->text_size & 0xFFF) || (nro->ro_size & 0xFFF) || (nro->rw_size & 0xFFF) || (nro->bss_size & 0xFFF)) {
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rc = 0x6809;
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goto LOAD_NRO_END;
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}
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if (nro->text_offset != 0 || nro->text_offset + nro->text_size != nro->ro_offset || nro->ro_offset + nro->ro_size != nro->rw_offset || nro->rw_offset + nro->rw_size != nro->nro_size) {
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rc = 0x6809;
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goto LOAD_NRO_END;
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}
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sha256_init(&sha_ctx);
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sha256_update(&sha_ctx, (u8 *)nro, nro->nro_size);
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sha256_final(&sha_ctx, nro_hash);
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if (!Registration::IsNroHashPresent(target_proc->index, nro_hash)) {
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rc = 0x6C09;
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goto LOAD_NRO_END;
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}
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if (Registration::IsNroAlreadyLoaded(target_proc->index, nro_hash)) {
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rc = 0x7209;
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goto LOAD_NRO_END;
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}
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if (R_FAILED((rc = svcSetProcessMemoryPermission(process_h, mcm_nro.code_memory_address, nro->text_size, 5)))) {
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goto LOAD_NRO_END;
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}
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if (R_FAILED((rc = svcSetProcessMemoryPermission(process_h, mcm_nro.code_memory_address + nro->ro_offset, nro->ro_size, 1)))) {
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goto LOAD_NRO_END;
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}
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if (R_FAILED((rc = svcSetProcessMemoryPermission(process_h, mcm_nro.code_memory_address + nro->rw_offset, nro->rw_size + nro->bss_size, 3)))) {
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goto LOAD_NRO_END;
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}
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Registration::AddNroToProcess(target_proc->index, &mcm_nro, &mcm_bss, nro->text_size, nro->ro_size, nro->rw_size, nro->build_id);
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*out_address = mcm_nro.code_memory_address;
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mcm_nro.Unmap();
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mcm_bss.Unmap();
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rc = 0x0;
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LOAD_NRO_END:
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if (R_FAILED(rc)) {
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mcm_nro.Close();
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mcm_bss.Close();
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}
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return 0x0;
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} |