Improve sprintf semantics and usage
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parent
f73bb0b7b7
commit
83b75af726
2 changed files with 16 additions and 16 deletions
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@ -55,8 +55,8 @@ emmc_part_t *system_part;
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#define TPRINTFARGS(text, args...) \
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end_time = get_tmr_ms(); \
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gfx_printf(text" done @ %d.%03ds\n", args, (end_time - start_time) / 1000, (end_time - start_time) % 1000)
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#define SAVE_KEY(name, src, len) _save_key(name, src, len, text_buffer, &buf_index)
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#define SAVE_KEY_FAMILY(name, src, count, len) _save_key_family(name, src, count, len, text_buffer, &buf_index)
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#define SAVE_KEY(name, src, len) _save_key(name, src, len, text_buffer)
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#define SAVE_KEY_FAMILY(name, src, count, len) _save_key_family(name, src, count, len, text_buffer)
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static u8 temp_key[0x10],
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bis_key[4][0x20] = {0},
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@ -87,8 +87,8 @@ static const u32 colors[6] = {COLOR_RED, COLOR_ORANGE, COLOR_YELLOW, COLOR_GREEN
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// key functions
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static bool _key_exists(const void *data) { return memcmp(data, zeros, 0x10); };
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static void _save_key(const char *name, const void *data, const u32 len, char *outbuf, u32 *buf_index);
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static void _save_key_family(const char *name, const void *data, const u32 num_keys, const u32 len, char *outbuf, u32 *buf_index);
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static void _save_key(const char *name, const void *data, const u32 len, char *outbuf);
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static void _save_key_family(const char *name, const void *data, const u32 num_keys, const u32 len, char *outbuf);
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static void _generate_kek(u32 ks, const void *key_source, void *master_key, const void *kek_seed, const void *key_seed);
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// nca functions
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static void *_nca_process(u32 hk_ks1, u32 hk_ks2, FIL *fp, u32 key_offset, u32 len);
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@ -682,8 +682,7 @@ dismount:
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}
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key_output: ;
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char *text_buffer = (char *)calloc(0x4000, 1);
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u32 buf_index = 0;
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__attribute__ ((aligned (16))) char text_buffer[0x3000] = {0};
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SAVE_KEY("aes_kek_generation_source", aes_kek_generation_source, 0x10);
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SAVE_KEY("aes_key_generation_source", aes_key_generation_source, 0x10);
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@ -746,12 +745,11 @@ key_output: ;
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TPRINTFARGS("\n%kFound %d keys.\n%kLockpick totally", colors[0], _key_count, colors[1]);
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f_mkdir("switch");
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if (!sd_save_to_file(text_buffer, buf_index, "sd:/switch/prod.keys"))
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gfx_printf("%kWrote %d bytes to /switch/prod.keys\n", colors[2], buf_index);
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else
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if (!sd_save_to_file(text_buffer, strlen(text_buffer), "sd:/switch/prod.keys") && !f_stat("sd:/switch/prod.keys", &fno)) {
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gfx_printf("%kWrote %d bytes to /switch/prod.keys\n", colors[2], (u32)fno.fsize);
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} else
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EPRINTF("Failed to save keys to SD.");
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sd_unmount();
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free(text_buffer);
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out_wait:
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gfx_printf("\n%kVOL + -> Reboot to RCM\n%kVOL - -> Reboot normally\n%kPower -> Power off", colors[3], colors[4], colors[5]);
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@ -765,21 +763,22 @@ out_wait:
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power_off();
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}
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static void _save_key(const char *name, const void *data, const u32 len, char *outbuf, u32 *buf_index) {
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static void _save_key(const char *name, const void *data, const u32 len, char *outbuf) {
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if (!_key_exists(data))
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return;
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*buf_index += sprintf(outbuf + *buf_index, "%s = ", name);
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u32 pos = strlen(outbuf);
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pos += sprintf(&outbuf[pos], "%s = ", name);
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for (u32 i = 0; i < len; i++)
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*buf_index += sprintf(outbuf + *buf_index, "%02x", *(u8*)(data + i));
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*buf_index += sprintf(outbuf + *buf_index, "\n");
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pos += sprintf(&outbuf[pos], "%02x", *(u8*)(data + i));
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sprintf(&outbuf[pos], "\n");
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_key_count++;
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}
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static void _save_key_family(const char *name, const void *data, const u32 num_keys, const u32 len, char *outbuf, u32 *buf_index) {
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static void _save_key_family(const char *name, const void *data, const u32 num_keys, const u32 len, char *outbuf) {
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char temp_name[0x40] = {0};
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for (u32 i = 0; i < num_keys; i++) {
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sprintf(temp_name, "%s_%02x", name, i);
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_save_key(temp_name, data + i * len, len, outbuf, buf_index);
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_save_key(temp_name, data + i * len, len, outbuf);
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}
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}
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@ -116,6 +116,7 @@ u32 sprintf(char *buffer, const char *fmt, ...) {
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}
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out:
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buffer[count] = 0;
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va_end(ap);
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return count;
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}
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