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Implement -t romfs (and placeholder code for remaining types) (#4)

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This commit is contained in:
Michael Scire 2018-02-03 21:18:53 -08:00
parent d762f71f98
commit ac7b24a24e
7 changed files with 254 additions and 61 deletions
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4
Makefile
View file

@ -17,7 +17,7 @@ all:
.c.o:
$(CC) $(INCLUDE) -c $(CFLAGS) -o $@ $<
hactool: sha.o aes.o rsa.o npdm.o bktr.o pki.o pfs0.o utils.o nca.o main.o filepath.o
hactool: sha.o aes.o rsa.o npdm.o bktr.o pki.o pfs0.o romfs.o utils.o nca.o main.o filepath.o
$(CC) -o $@ $^ $(LDFLAGS) -L $(LIBDIR)
aes.o: aes.h types.h
@ -36,6 +36,8 @@ nca.o: nca.h aes.h sha.h rsa.h bktr.h filepath.h types.h
npdm.o: npdm.c types.h
romfs.o: ivfc.h types.h
rsa.o: rsa.h sha.h types.h
sha.o: sha.h types.h

25
ivfc.h
View file

@ -2,6 +2,9 @@
#define HACTOOL_IVFC_H
#include "types.h"
#include "utils.h"
#include "settings.h"
#define IVFC_HEADER_SIZE 0xE0
#define IVFC_MAX_LEVEL 6
@ -69,6 +72,23 @@ typedef struct {
char name[];
} romfs_fentry_t;
typedef struct {
ivfc_hdr_t ivfc_header;
uint8_t _0xE0[0x58];
} romfs_superblock_t;
typedef struct {
romfs_superblock_t *superblock;
FILE *file;
hactool_ctx_t *tool_ctx;
validity_t superblock_hash_validity;
ivfc_level_ctx_t ivfc_levels[IVFC_MAX_LEVEL];
uint64_t romfs_offset;
romfs_hdr_t header;
romfs_direntry_t *directories;
romfs_fentry_t *files;
} romfs_ctx_t;
#define ROMFS_ENTRY_EMPTY 0xFFFFFFFF
static inline romfs_direntry_t *romfs_get_direntry(romfs_direntry_t *directories, uint32_t offset) {
@ -79,4 +99,9 @@ static inline romfs_fentry_t *romfs_get_fentry(romfs_fentry_t *files, uint32_t o
return (romfs_fentry_t *)((char *)files + offset);
}
void romfs_process(romfs_ctx_t *ctx);
void romfs_save(romfs_ctx_t *ctx);
void romfs_print(romfs_ctx_t *ctx);
#endif

119
main.c
View file

@ -26,7 +26,7 @@ static void usage(void) {
" -r, --raw Keep raw data, don't unpack.\n"
" -y, --verify Verify hashes and signatures.\n"
" -d, --dev Decrypt with development keys instead of retail.\n"
" -t, --intype=type Specify input file type [nca, pfs0]\n"
" -t, --intype=type Specify input file type [nca, pfs0, romfs]\n"
" --titlekey=key Set title key for Rights ID crypto titles.\n"
" --contentkey=key Set raw key for NCA body decryption.\n"
"NCA options:\n"
@ -49,6 +49,9 @@ static void usage(void) {
" --basenca Set Base NCA to use with update partitions.\n"
"PFS0 options:\n"
" --outdir=dir Specify PFS0 directory path.\n"
"RomFS options:\n"
" --romfsdir=dir Specify RomFS directory path.\n"
" --listromfs List files in RomFS.\n"
"\n", __TIME__, __DATE__, prog_name);
exit(EXIT_FAILURE);
}
@ -171,7 +174,22 @@ int main(int argc, char **argv) {
nca_ctx.tool_ctx->file_type = FILETYPE_NCA;
} else if (!strcmp(optarg, "pfs0") || !strcmp(optarg, "exefs")) {
nca_ctx.tool_ctx->file_type = FILETYPE_PFS0;
}
} else if (!strcmp(optarg, "romfs")) {
nca_ctx.tool_ctx->file_type = FILETYPE_ROMFS;
}
/* } else if (!strcmp(optarg, "hfs0")) {
* nca_ctx.tool_ctx->file_type = FILETYPE_HFS0;
* }
* } else if (!strcmp(optarg, "xci") || !strcmp(optarg, "gamecard") || !strcmp(optarg, "gc")) {
* nca_ctx.tool_ctx->file_type = FILETYPE_XCI;
* }
* } else if (!strcmp(optarg, "package2") || !strcmp(optarg, "pk21")) {
* nca_ctx.tool_ctx->file_type = FILETYPE_PACKAGE2;
* }
* } else if (!strcmp(optarg, "package1") || !strcmp(optarg, "pk11")) {
* nca_ctx.tool_ctx->file_type = FILETYPE_PACKAGE1;
* }
*/
break;
case 0: filepath_set(&nca_ctx.tool_ctx->settings.section_paths[0], optarg); break;
@ -266,51 +284,72 @@ int main(int argc, char **argv) {
return EXIT_FAILURE;
}
if (tool_ctx.file_type == FILETYPE_NCA) {
if (nca_ctx.tool_ctx->base_nca_ctx != NULL) {
memcpy(&base_ctx.settings.keyset, &tool_ctx.settings.keyset, sizeof(nca_keyset_t));
nca_ctx.tool_ctx->base_nca_ctx->tool_ctx = &base_ctx;
nca_process(nca_ctx.tool_ctx->base_nca_ctx);
int found_romfs = 0;
for (unsigned int i = 0; i < 4; i++) {
if (nca_ctx.tool_ctx->base_nca_ctx->section_contexts[i].is_present && nca_ctx.tool_ctx->base_nca_ctx->section_contexts[i].type == ROMFS) {
found_romfs = 1;
break;
switch (tool_ctx.file_type) {
case FILETYPE_NCA: {
if (nca_ctx.tool_ctx->base_nca_ctx != NULL) {
memcpy(&base_ctx.settings.keyset, &tool_ctx.settings.keyset, sizeof(nca_keyset_t));
nca_ctx.tool_ctx->base_nca_ctx->tool_ctx = &base_ctx;
nca_process(nca_ctx.tool_ctx->base_nca_ctx);
int found_romfs = 0;
for (unsigned int i = 0; i < 4; i++) {
if (nca_ctx.tool_ctx->base_nca_ctx->section_contexts[i].is_present && nca_ctx.tool_ctx->base_nca_ctx->section_contexts[i].type == ROMFS) {
found_romfs = 1;
break;
}
}
if (found_romfs == 0) {
fprintf(stderr, "Unable to locate RomFS in base NCA!\n");
return EXIT_FAILURE;
}
}
if (found_romfs == 0) {
fprintf(stderr, "Unable to locate RomFS in base NCA!\n");
return EXIT_FAILURE;
}
}
nca_ctx.file = tool_ctx.file;
nca_process(&nca_ctx);
nca_free_section_contexts(&nca_ctx);
if (nca_ctx.tool_ctx->base_file != NULL) {
fclose(nca_ctx.tool_ctx->base_file);
if (nca_ctx.tool_ctx->base_file_type == BASEFILE_NCA) {
nca_free_section_contexts(nca_ctx.tool_ctx->base_nca_ctx);
free(nca_ctx.tool_ctx->base_nca_ctx);
}
}
} else if (tool_ctx.file_type == FILETYPE_PFS0) {
pfs0_ctx_t pfs0_ctx;
memset(&pfs0_ctx, 0, sizeof(pfs0_ctx));
pfs0_ctx.file = tool_ctx.file;
pfs0_ctx.tool_ctx = &tool_ctx;
pfs0_process(&pfs0_ctx);
if (pfs0_ctx.header) {
free(pfs0_ctx.header);
nca_ctx.file = tool_ctx.file;
nca_process(&nca_ctx);
nca_free_section_contexts(&nca_ctx);
if (nca_ctx.tool_ctx->base_file != NULL) {
fclose(nca_ctx.tool_ctx->base_file);
if (nca_ctx.tool_ctx->base_file_type == BASEFILE_NCA) {
nca_free_section_contexts(nca_ctx.tool_ctx->base_nca_ctx);
free(nca_ctx.tool_ctx->base_nca_ctx);
}
}
break;
}
if (pfs0_ctx.npdm) {
free(pfs0_ctx.npdm);
case FILETYPE_PFS0: {
pfs0_ctx_t pfs0_ctx;
memset(&pfs0_ctx, 0, sizeof(pfs0_ctx));
pfs0_ctx.file = tool_ctx.file;
pfs0_ctx.tool_ctx = &tool_ctx;
pfs0_process(&pfs0_ctx);
if (pfs0_ctx.header) {
free(pfs0_ctx.header);
}
if (pfs0_ctx.npdm) {
free(pfs0_ctx.npdm);
}
break;
}
case FILETYPE_ROMFS: {
romfs_ctx_t romfs_ctx;
memset(&romfs_ctx, 0, sizeof(romfs_ctx));
romfs_ctx.file = tool_ctx.file;
romfs_ctx.tool_ctx = &tool_ctx;
romfs_process(&romfs_ctx);
if (romfs_ctx.files) {
free(romfs_ctx.files);
}
if (romfs_ctx.directories) {
free(romfs_ctx.directories);
}
break;
}
default: {
fprintf(stderr, "Unknown File Type!\n\n");
usage();
}
}
if (tool_ctx.file != NULL) {
fclose(tool_ctx.file);
}

16
nca.h
View file

@ -19,11 +19,6 @@ typedef struct {
uint8_t _0x8[0x8]; /* Padding. */
} nca_section_entry_t;
typedef struct {
ivfc_hdr_t ivfc_header;
uint8_t _0xE0[0x58];
} romfs_superblock_t;
typedef struct {
ivfc_hdr_t ivfc_header;
uint8_t _0xE0[0x18];
@ -31,17 +26,6 @@ typedef struct {
bktr_header_t subsection_header;
} bktr_superblock_t;
typedef struct {
romfs_superblock_t *superblock;
FILE *file;
validity_t superblock_hash_validity;
ivfc_level_ctx_t ivfc_levels[IVFC_MAX_LEVEL];
uint64_t romfs_offset;
romfs_hdr_t header;
romfs_direntry_t *directories;
romfs_fentry_t *files;
} romfs_ctx_t;
typedef struct {
bktr_superblock_t *superblock;
FILE *file;

6
pfs0.c
View file

@ -4,7 +4,7 @@
void pfs0_process(pfs0_ctx_t *ctx) {
/* Read *just* safe amount. */
pfs0_header_t raw_header;
fseek(ctx->file, 0, SEEK_SET);
fseeko64(ctx->file, 0, SEEK_SET);
if (fread(&raw_header, 1, sizeof(raw_header), ctx->file) != sizeof(raw_header)) {
fprintf(stderr, "Failed to read PFS0 header!\n");
exit(EXIT_FAILURE);
@ -22,7 +22,7 @@ void pfs0_process(pfs0_ctx_t *ctx) {
exit(EXIT_FAILURE);
}
fseek(ctx->file, 0, SEEK_SET);
fseeko64(ctx->file, 0, SEEK_SET);
if (fread(ctx->header, 1, header_size, ctx->file) != header_size) {
fprintf(stderr, "Failed to read PFS0 header!\n");
exit(EXIT_FAILURE);
@ -51,7 +51,7 @@ void pfs0_process(pfs0_ctx_t *ctx) {
fprintf(stderr, "Failed to allocate NPDM!\n");
exit(EXIT_FAILURE);
}
fseek(ctx->file, pfs0_get_header_size(ctx->header) + cur_file->offset, SEEK_SET);
fseeko64(ctx->file, pfs0_get_header_size(ctx->header) + cur_file->offset, SEEK_SET);
if (fread(ctx->npdm, 1, cur_file->size, ctx->file) != cur_file->size) {
fprintf(stderr, "Failed to read NPDM!\n");
exit(EXIT_FAILURE);

138
romfs.c Normal file
View file

@ -0,0 +1,138 @@
#include <stdio.h>
#include "types.h"
#include "utils.h"
#include "ivfc.h"
/* RomFS functions... */
void romfs_visit_file(romfs_ctx_t *ctx, uint32_t file_offset, filepath_t *dir_path) {
romfs_fentry_t *entry = romfs_get_fentry(ctx->files, file_offset);
filepath_t *cur_path = calloc(1, sizeof(filepath_t));
if (cur_path == NULL) {
fprintf(stderr, "Failed to allocate filepath!\n");
exit(EXIT_FAILURE);
}
filepath_copy(cur_path, dir_path);
if (entry->name_size) {
filepath_append_n(cur_path, entry->name_size, "%s", entry->name);
}
/* If we're extracting... */
if ((ctx->tool_ctx->action & ACTION_LISTROMFS) == 0) {
printf("Saving %s...\n", cur_path->char_path);
save_file_section(ctx->file, ctx->romfs_offset + ctx->header.data_offset + entry->offset, entry->size, cur_path);
} else {
printf("rom:%s\n", cur_path->char_path);
}
free(cur_path);
if (entry->sibling != ROMFS_ENTRY_EMPTY) {
romfs_visit_file(ctx, entry->sibling, dir_path);
}
}
void romfs_visit_dir(romfs_ctx_t *ctx, uint32_t dir_offset, filepath_t *parent_path) {
romfs_direntry_t *entry = romfs_get_direntry(ctx->directories, dir_offset);
filepath_t *cur_path = calloc(1, sizeof(filepath_t));
if (cur_path == NULL) {
fprintf(stderr, "Failed to allocate filepath!\n");
exit(EXIT_FAILURE);
}
filepath_copy(cur_path, parent_path);
if (entry->name_size) {
filepath_append_n(cur_path, entry->name_size, "%s", entry->name);
}
/* If we're actually extracting the romfs, make directory. */
if ((ctx->tool_ctx->action & ACTION_LISTROMFS) == 0) {
os_makedir(cur_path->os_path);
}
if (entry->file != ROMFS_ENTRY_EMPTY) {
romfs_visit_file(ctx, entry->file, cur_path);
}
if (entry->child != ROMFS_ENTRY_EMPTY) {
romfs_visit_dir(ctx, entry->child, cur_path);
}
if (entry->sibling != ROMFS_ENTRY_EMPTY) {
romfs_visit_dir(ctx, entry->sibling, parent_path);
}
free(cur_path);
}
void romfs_process(romfs_ctx_t *ctx) {
ctx->romfs_offset = 0;
fseeko64(ctx->file, ctx->romfs_offset, SEEK_SET);
if (fread(&ctx->header, 1, sizeof(romfs_hdr_t), ctx->file) != sizeof(romfs_hdr_t)) {
fprintf(stderr, "Failed to read RomFS header!\n");
return;
}
if ((ctx->tool_ctx->action & (ACTION_EXTRACT | ACTION_LISTROMFS)) && ctx->header.header_size == ROMFS_HEADER_SIZE) {
/* Pre-load the file/data entry caches. */
ctx->directories = calloc(1, ctx->header.dir_meta_table_size);
if (ctx->directories == NULL) {
fprintf(stderr, "Failed to allocate RomFS directory cache!\n");
exit(EXIT_FAILURE);
}
/* Switch RomFS has actual entries at table offset + 4 for no good reason. */
fseeko64(ctx->file, ctx->romfs_offset + ctx->header.dir_meta_table_offset + 4, SEEK_SET);
if (fread(ctx->directories, 1, ctx->header.dir_meta_table_size, ctx->file) != ctx->header.dir_meta_table_size) {
fprintf(stderr, "Failed to read RomFS directory cache!\n");
exit(EXIT_FAILURE);
}
ctx->files = calloc(1, ctx->header.file_meta_table_size);
if (ctx->files == NULL) {
fprintf(stderr, "Failed to allocate RomFS file cache!\n");
exit(EXIT_FAILURE);
}
fseeko64(ctx->file, ctx->romfs_offset + ctx->header.file_meta_table_offset, SEEK_SET);
if (fread(ctx->files, 1, ctx->header.file_meta_table_size, ctx->file) != ctx->header.file_meta_table_size) {
fprintf(stderr, "Failed to read RomFS file cache!\n");
exit(EXIT_FAILURE);
}
}
/* If there's ever anything meaningful to print about RomFS, uncomment and implement.
*
* if (ctx->tool_ctx->action & ACTION_INFO) {
* romfs_print(ctx);
* }
*/
if (ctx->tool_ctx->action & ACTION_EXTRACT) {
romfs_save(ctx);
}
}
void romfs_save(romfs_ctx_t *ctx) {
if (ctx->tool_ctx->action & ACTION_LISTROMFS) {
filepath_t fakepath;
filepath_init(&fakepath);
filepath_set(&fakepath, "");
romfs_visit_dir(ctx, 0, &fakepath);
} else {
/* Extract to directory. */
filepath_t *dirpath = NULL;
if (ctx->tool_ctx->settings.romfs_dir_path.enabled) {
dirpath = &ctx->tool_ctx->settings.romfs_dir_path.path;
}
if (dirpath != NULL && dirpath->valid == VALIDITY_VALID) {
os_makedir(dirpath->os_path);
romfs_visit_dir(ctx, 0, dirpath);
}
}
}
void romfs_print(romfs_ctx_t *ctx) {
/* Is there anything meaningful to print here? */
fprintf(stderr, "Error: RomFS printing not implemented.\n");
}

7
settings.h
View file

@ -57,7 +57,12 @@ typedef struct {
enum hactool_file_type
{
FILETYPE_NCA,
FILETYPE_PFS0
FILETYPE_PFS0,
FILETYPE_ROMFS,
/* FILETYPE_HFS0, */
/* FILETYPE_XCI, */
/* FILETYPE_PACKAGE2, */
/* FILETYPE_PACKAGE1, */
};
#define ACTION_INFO (1<<0)