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fusee: Greatly simplify and improve KIP loading

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This commit is contained in:
Michael Scire 2018-10-16 15:08:06 -07:00
parent 49f627bb28
commit bfa5847e48
3 changed files with 116 additions and 34 deletions
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1
fusee/fusee-secondary/src/package2.c
View file

@ -283,6 +283,7 @@ static ini1_header_t *package2_rebuild_ini1(ini1_header_t *ini1, uint32_t target
ini1_header_t *inis_to_merge[STRATOSPHERE_INI1_MAX] = {0};
ini1_header_t *merged;
inis_to_merge[STRATOSPHERE_INI1_SDFILES] = stratosphere_get_sd_files_ini1();
inis_to_merge[STRATOSPHERE_INI1_EMBEDDED] = stratosphere_get_ini1(target_firmware);
inis_to_merge[STRATOSPHERE_INI1_PACKAGE2] = ini1;

141
fusee/fusee-secondary/src/stratosphere.c
View file

@ -17,11 +17,13 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <dirent.h>
#include "exocfg.h"
#include "utils.h"
#include "package2.h"
#include "stratosphere.h"
#include "fs_utils.h"
#include "lib/log.h"
#define u8 uint8_t
#define u32 uint32_t
@ -34,6 +36,7 @@
#undef u32
static ini1_header_t *g_stratosphere_ini1 = NULL;
static ini1_header_t *g_sd_files_ini1 = NULL;
static bool g_stratosphere_loader_enabled = true;
static bool g_stratosphere_sm_enabled = true;
@ -137,13 +140,111 @@ ini1_header_t *stratosphere_get_ini1(uint32_t target_firmware) {
}
void stratosphere_free_ini1(void) {
free(g_stratosphere_ini1);
g_stratosphere_ini1 = NULL;
if (g_stratosphere_ini1 != NULL) {
free(g_stratosphere_ini1);
g_stratosphere_ini1 = NULL;
}
if (g_sd_files_ini1 != NULL) {
free(g_sd_files_ini1);
g_sd_files_ini1 = NULL;
}
}
static void try_add_sd_kip(ini1_header_t *ini1, const char *kip_path) {
size_t file_size = get_file_size(kip_path);
if (ini1->size + file_size > PACKAGE2_SIZE_MAX) {
fatal_error("Failed to load %s: INI1 would be too large!\n", kip_path);
}
kip1_header_t kip_header;
if (read_from_file(&kip_header, sizeof(kip_header), kip_path) != sizeof(kip_header) || kip_header.magic != MAGIC_KIP1) {
return;
}
size_t kip_size = kip1_get_size_from_header(&kip_header);
if (kip_size > file_size) {
fatal_error("Failed to load %s: KIP size is corrupt!\n", kip_path);
}
if (read_from_file(ini1->kip_data + ini1->size - sizeof(ini1_header_t), kip_size, kip_path) != kip_size) {
/* TODO: is this error fatal? */
return;
}
ini1->size += kip_size;
ini1->num_processes++;
}
ini1_header_t *stratosphere_get_sd_files_ini1(void) {
if (g_sd_files_ini1 != NULL) {
return g_sd_files_ini1;
}
/* Allocate space. */
g_sd_files_ini1 = (ini1_header_t *)malloc(PACKAGE2_SIZE_MAX);
g_sd_files_ini1->magic = MAGIC_INI1;
g_sd_files_ini1->size = sizeof(ini1_header_t);
g_sd_files_ini1->num_processes = 0;
g_sd_files_ini1->_0xC = 0;
/* Load all kips from /atmosphere/kips/<*>.kip or /atmosphere/kips/<*>/<*>.kip. */
DIR *kips_dir = opendir("atmosphere/kips");
struct dirent *ent;
if (kips_dir != NULL) {
while ((ent = readdir(kips_dir)) != NULL) {
if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) {
continue;
}
char kip_path[0x301] = {0};
snprintf(kip_path, 0x300, "atmosphere/kips/%s", ent->d_name);
struct stat kip_stat;
if (stat(kip_path, &kip_stat) == -1) {
continue;
}
if ((kip_stat.st_mode & S_IFMT) == S_IFREG) {
/* If file, add to ini1. */
try_add_sd_kip(g_sd_files_ini1, kip_path);
} else if ((kip_stat.st_mode & S_IFMT) == S_IFDIR) {
/* Otherwise, allow one level of nesting. */
DIR *sub_dir = opendir(kip_path);
struct dirent *sub_ent;
if (sub_dir != NULL) {
while ((sub_ent = readdir(sub_dir)) != NULL) {
if (strcmp(sub_ent->d_name, ".") == 0 || strcmp(sub_ent->d_name, "..") == 0) {
continue;
}
/* Reuse kip path variable. */
memset(kip_path, 0, sizeof(kip_path));
snprintf(kip_path, 0x300, "atmosphere/kips/%s/%s", ent->d_name, sub_ent->d_name);
if (stat(kip_path, &kip_stat) == -1) {
continue;
}
if ((kip_stat.st_mode & S_IFMT) == S_IFREG) {
/* If file, add to ini1. */
try_add_sd_kip(g_sd_files_ini1, kip_path);
}
}
closedir(sub_dir);
}
}
}
closedir(kips_dir);
}
return g_sd_files_ini1;
}
/* Merges some number of INI1s into a single INI1. It's assumed that the INIs are in order of preference. */
ini1_header_t *stratosphere_merge_inis(ini1_header_t **inis, size_t num_inis) {
char sd_path[0x100] = {0};
uint32_t total_num_processes = 0;
/* Validate all ini headers. */
@ -170,7 +271,6 @@ ini1_header_t *stratosphere_merge_inis(ini1_header_t **inis, size_t num_inis) {
merged->num_processes = 0;
merged->_0xC = 0;
size_t remaining_size = PACKAGE2_SIZE_MAX - sizeof(ini1_header_t);
size_t read_size;
unsigned char *current_dst_kip = merged->kip_data;
@ -196,34 +296,13 @@ ini1_header_t *stratosphere_merge_inis(ini1_header_t **inis, size_t num_inis) {
continue;
}
/* TODO: What folder should these be read out of? */
snprintf(sd_path, sizeof(sd_path), "atmosphere/titles/%016llX/%016llX.kip", current_kip->title_id, current_kip->title_id);
/* Try to load an override KIP from SD, if possible. */
read_size = read_from_file(current_dst_kip, remaining_size, sd_path);
if (read_size != 0) {
kip1_header_t *sd_kip = (kip1_header_t *)(current_dst_kip);
if (read_size < sizeof(kip1_header_t) || sd_kip->magic != MAGIC_KIP1) {
fatal_error("%s is not a KIP1?\n", sd_path);
} else if (sd_kip->title_id != current_kip->title_id) {
fatal_error("%s has wrong Title ID!\n", sd_path);
}
size_t expected_sd_kip_size = kip1_get_size_from_header(sd_kip);
if (expected_sd_kip_size != read_size) {
fatal_error("%s has wrong size or there is not enough space (expected 0x%zx, read 0x%zx)!\n",
sd_path, expected_sd_kip_size, read_size);
}
remaining_size -= expected_sd_kip_size;
current_dst_kip += expected_sd_kip_size;
} else {
size_t current_kip_size = kip1_get_size_from_header(current_kip);
if (current_kip_size > remaining_size) {
fatal_error("Not enough space for all the KIP1s!\n");
}
memcpy(current_dst_kip, current_kip, current_kip_size);
remaining_size -= current_kip_size;
current_dst_kip += current_kip_size;
size_t current_kip_size = kip1_get_size_from_header(current_kip);
if (current_kip_size > remaining_size) {
fatal_error("Not enough space for all the KIP1s!\n");
}
memcpy(current_dst_kip, current_kip, current_kip_size);
remaining_size -= current_kip_size;
current_dst_kip += current_kip_size;
process_list[merged->num_processes++] = current_kip->title_id;
}

8
fusee/fusee-secondary/src/stratosphere.h
View file

@ -20,11 +20,13 @@
#include "utils.h"
#include "kip.h"
#define STRATOSPHERE_INI1_EMBEDDED 0x0
#define STRATOSPHERE_INI1_PACKAGE2 0x1
#define STRATOSPHERE_INI1_MAX 0x2
#define STRATOSPHERE_INI1_SDFILES 0x0
#define STRATOSPHERE_INI1_EMBEDDED 0x1
#define STRATOSPHERE_INI1_PACKAGE2 0x2
#define STRATOSPHERE_INI1_MAX 0x3
ini1_header_t *stratosphere_get_ini1(uint32_t target_firmware);
ini1_header_t *stratosphere_get_sd_files_ini1(void);
void stratosphere_free_ini1(void);
ini1_header_t *stratosphere_merge_inis(ini1_header_t **inis, unsigned int num_inis);