117 lines
3.3 KiB
Diff
117 lines
3.3 KiB
Diff
diff -uNr a/include/brahma.h b/include/brahma.h
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--- a/include/brahma.h 2016-09-21 16:18:56.246840000 +0200
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+++ b/include/brahma.h 2016-09-21 16:20:28.975957322 +0200
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@@ -4,7 +4,7 @@
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u32 brahma_init (void);
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u32 brahma_exit (void);
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-s32 load_arm9_payload_offset (char *filename, u32 offset, u32 max_psize);
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+s32 load_arm9_payload_offset (void);
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s32 load_arm9_payload_from_mem (u8* data, u32 dsize);
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void redirect_codeflow (u32 *dst_addr, u32 *src_addr);
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s32 map_arm9_payload (void);
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@@ -13,8 +13,6 @@
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s32 get_exploit_data (struct exploit_data *data);
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s32 firm_reboot ();
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-#define load_arm9_payload(filename) load_arm9_payload_offset(filename, 0, 0)
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-
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#define BRAHMA_NETWORK_PORT 80
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#define ARM_JUMPOUT 0xE51FF004 // LDR PC, [PC, -#04]
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diff -uNr a/source/brahma.c b/source/brahma.c
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--- a/source/brahma.c 2016-09-21 16:18:56.246840000 +0200
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+++ b/source/brahma.c 2016-09-21 16:21:33.240730777 +0200
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@@ -179,39 +179,56 @@
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return g_ext_arm9_loaded;
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}
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-/* reads ARM9 payload from a given path.
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- filename: full path of payload
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- offset: offset of the payload in the file
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- max_psize: the maximum size of the payload that should be loaded (if 0, ARM9_MAX_PAYLOAD_SIZE. Should be smaller than ARM9_MAX_PAYLOAD_SIZE)
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+/* reads Luma payload
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returns: 0 on failure, 1 on success */
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-s32 load_arm9_payload_offset (char *filename, u32 offset, u32 max_psize) {
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+s32 load_arm9_payload_offset (void) {
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s32 result = 0;
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u32 fsize = 0;
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u32 psize = 0;
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+ bool use_default = true;
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+ FILE *f;
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- if (max_psize == 0 || max_psize > ARM9_PAYLOAD_MAX_SIZE)
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- max_psize = ARM9_PAYLOAD_MAX_SIZE;
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+ FILE *p = fopen("/luma/path.txt", "r");
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- if (!filename)
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- return result;
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+ if (p) {
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+ fseek(p , 0, SEEK_END);
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+ psize = ftell(p);
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+ if (psize > 5 && psize < 39) {
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+ char path[psize + 1];
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+
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+ fseek(p, 0, SEEK_SET);
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+ u32 bytes_read = fread(path, 1, psize, p);
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+
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+ if (bytes_read == psize) {
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+ if (path[psize - 1] == 0xA) psize--;
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+ if (path[psize - 1] == 0xD) psize--;
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+ if (psize > 5 && path[0] == '/' && memcmp(&path[psize - 4], ".bin", 4)) {
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+ path[psize] = 0;
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+ f = fopen(path, "rb");
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+ use_default = false;
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+ }
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+ }
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+ }
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+ fclose(p);
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+ }
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+
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+ if (use_default) f = fopen("/arm9loaderhax.bin", "rb");
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+
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+ u32 max_size = ARM9_PAYLOAD_MAX_SIZE;
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- FILE *f = fopen(filename, "rb");
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if (f) {
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- fseek(f , 0, SEEK_END);
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+ fseek(f, 0, SEEK_END);
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fsize = ftell(f);
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- if (offset < fsize) {
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- psize = fsize - offset;
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- if (psize > max_psize)
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- psize = max_psize;
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-
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- g_ext_arm9_size = psize;
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-
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- fseek(f, offset, SEEK_SET);
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- if (psize >= 8) {
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- u32 bytes_read = fread(g_ext_arm9_buf, 1, psize, f);
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- result = (g_ext_arm9_loaded = (bytes_read == psize));
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- }
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+ if (fsize > max_size)
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+ fsize = max_size;
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+
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+ g_ext_arm9_size = fsize;
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+
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+ fseek(f, 0, SEEK_SET);
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+ if (fsize >= 8) {
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+ u32 bytes_read = fread(g_ext_arm9_buf, 1, fsize, f);
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+ result = (g_ext_arm9_loaded = (bytes_read == fsize));
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}
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fclose(f);
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}
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diff -uNr a/source/main.c b/source/main.c
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--- a/source/main.c 2016-09-21 16:18:56.246840000 +0200
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+++ b/source/main.c 2016-09-21 16:20:28.979957377 +0200
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@@ -10,7 +10,7 @@
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int main (void) {
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if (brahma_init()) {
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- if (load_arm9_payload_offset("/" LAUNCHER_PATH, 0x12000, 0x10000) != 1)
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+ if (load_arm9_payload_offset() != 1)
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goto error;
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firm_reboot();
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brahma_exit();
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