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Fix bug in fusee: package2.c, etc.

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This commit is contained in:
TuxSH 2018-05-17 16:11:10 +02:00
parent 1b07a07353
commit 3dac6c9268
2 changed files with 10 additions and 6 deletions
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1
exosphere/src/package2.h
View file

@ -81,6 +81,7 @@ typedef struct {
package2_meta_t metadata; package2_meta_t metadata;
uint8_t encrypted_header[0x100]; uint8_t encrypted_header[0x100];
}; };
uint8_t data[];
} package2_header_t; } package2_header_t;
void load_package2(coldboot_crt0_reloc_list_t *reloc_list); void load_package2(coldboot_crt0_reloc_list_t *reloc_list);

15
fusee/fusee-secondary/src/package2.c
View file

@ -78,7 +78,9 @@ void package2_rebuild_and_copy(package2_header_t *package2, uint32_t target_firm
static void package2_crypt_ctr(unsigned int master_key_rev, void *dst, size_t dst_size, const void *src, size_t src_size, const void *ctr, size_t ctr_size) { static void package2_crypt_ctr(unsigned int master_key_rev, void *dst, size_t dst_size, const void *src, size_t src_size, const void *ctr, size_t ctr_size) {
/* Derive package2 key. */ /* Derive package2 key. */
const uint8_t package2_key_source[0x10] = {0xFB, 0x8B, 0x6A, 0x9C, 0x79, 0x00, 0xC8, 0x49, 0xEF, 0xD2, 0x4D, 0x85, 0x4D, 0x30, 0xA0, 0xC7}; const uint8_t __attribute__((aligned(16))) package2_key_source[0x10] = {
0xFB, 0x8B, 0x6A, 0x9C, 0x79, 0x00, 0xC8, 0x49, 0xEF, 0xD2, 0x4D, 0x85, 0x4D, 0x30, 0xA0, 0xC7
};
unsigned int keyslot = mkey_get_keyslot(master_key_rev); unsigned int keyslot = mkey_get_keyslot(master_key_rev);
decrypt_data_into_keyslot(KEYSLOT_SWITCH_PACKAGE2KEY, keyslot, package2_key_source, 0x10); decrypt_data_into_keyslot(KEYSLOT_SWITCH_PACKAGE2KEY, keyslot, package2_key_source, 0x10);
@ -87,6 +89,7 @@ static void package2_crypt_ctr(unsigned int master_key_rev, void *dst, size_t ds
} }
static bool package2_validate_metadata(package2_meta_t *metadata) { static bool package2_validate_metadata(package2_meta_t *metadata) {
package2_header_t *package2 = (package2_header_t *)((uint8_t *)metadata - offsetof(package2_header_t, metadata));
if (metadata->magic != MAGIC_PK21) { if (metadata->magic != MAGIC_PK21) {
return false; return false;
} }
@ -147,7 +150,7 @@ static bool package2_validate_metadata(package2_meta_t *metadata) {
/* Validate section hashes. */ /* Validate section hashes. */
if (metadata->section_sizes[section]) { if (metadata->section_sizes[section]) {
void *section_data = (void *)((uint8_t *)NX_BOOTLOADER_PACKAGE2_LOAD_ADDRESS + sizeof(package2_header_t) + cur_section_offset); void *section_data = package2->data + cur_section_offset;
uint8_t calculated_hash[0x20]; uint8_t calculated_hash[0x20];
se_calculate_sha256(calculated_hash, section_data, metadata->section_sizes[section]); se_calculate_sha256(calculated_hash, section_data, metadata->section_sizes[section]);
if (memcmp(calculated_hash, metadata->section_hashes[section], sizeof(metadata->section_hashes[section])) != 0) { if (memcmp(calculated_hash, metadata->section_hashes[section], sizeof(metadata->section_hashes[section])) != 0) {
@ -216,7 +219,7 @@ static void package2_decrypt(package2_header_t *package2) {
continue; continue;
} }
void *src_start = (uint8_t *)package2 + sizeof(package2_header_t) + cur_section_offset; void *src_start = package2->data + cur_section_offset;
void *dst_start = src_start; void *dst_start = src_start;
size_t size = (size_t)package2->metadata.section_sizes[section]; size_t size = (size_t)package2->metadata.section_sizes[section];
@ -267,7 +270,7 @@ static ini1_header_t *package2_rebuild_ini1(ini1_header_t *ini1, uint32_t target
static void package2_append_section(size_t id, package2_header_t *package2, void *data, size_t size) { static void package2_append_section(size_t id, package2_header_t *package2, void *data, size_t size) {
/* This function must be called in ascending order of id */ /* This function must be called in ascending order of id */
uint32_t offset = id == 0 ? 0 : package2->metadata.section_offsets[id - 1] + package2->metadata.section_sizes[id - 1]; uint32_t offset = id == 0 ? 0 : package2->metadata.section_offsets[id - 1] + package2->metadata.section_sizes[id - 1];
void *dst = (uint8_t *)package2 + sizeof(package2_header_t) + offset; void *dst = package2->data + offset;
memcpy(dst, data, size); memcpy(dst, data, size);
package2->metadata.section_offsets[id] = offset; package2->metadata.section_offsets[id] = offset;
@ -282,10 +285,10 @@ static void package2_fixup_header_and_section_hashes(package2_header_t *package2
} }
size_t sz = (size_t)package2->metadata.section_sizes[section]; size_t sz = (size_t)package2->metadata.section_sizes[section];
size_t off = sizeof(package2_header_t) + package2->metadata.section_offsets[section]; size_t off = package2->metadata.section_offsets[section];
/* Fix up the hash. */ /* Fix up the hash. */
se_calculate_sha256(package2->metadata.section_hashes[section],(uint8_t *)package2 + off, sz); se_calculate_sha256(package2->metadata.section_hashes[section], package2->data + off, sz);
} }
/* Fix up the size in XOR'd CTR. */ /* Fix up the size in XOR'd CTR. */