diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/idevicerestore.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/idevicerestore.c b/src/idevicerestore.c index 10f8e25..1cb1249 100644 --- a/src/idevicerestore.c +++ b/src/idevicerestore.c @@ -100,6 +100,8 @@ static void usage(int argc, char* argv[], int err) " -e, --erase Perform a full restore, erasing all data (defaults to update)\n" \ " DO NOT USE if you want to preserve user data on the device!\n" \ " -y, --no-input Non-interactive mode, do not ask for any input.\n" \ + " WARNING: This will disable certain checks/prompts that are\n" \ + " supposed to prevent DATA LOSS. Use with caution.\n" \ " -n, --no-action Do not perform any restore action. If combined with -l option\n" \ " the on-demand ipsw download is performed before exiting.\n" \ " -h, --help Prints this usage information\n" \ @@ -187,6 +189,20 @@ static int load_version_data(struct idevicerestore_client_t* client) return 0; } +static int32_t get_version_num(const char *s_ver) +{ + int vers[3] = {0, 0, 0}; + if (sscanf(s_ver, "%d.%d.%d", &vers[0], &vers[1], &vers[2]) >= 2) { + return ((vers[0] & 0xFF) << 16) | ((vers[1] & 0xFF) << 8) | (vers[2] & 0xFF); + } + return 0x00FFFFFF; +} + +static int compare_versions(const char *s_ver1, const char *s_ver2) +{ + return (get_version_num(s_ver1) & 0xFFFF00) - (get_version_num(s_ver2) & 0xFFFF00); +} + int idevicerestore_start(struct idevicerestore_client_t* client) { int tss_enabled = 0; @@ -672,6 +688,47 @@ int idevicerestore_start(struct idevicerestore_client_t* client) /* print information about current build identity */ build_identity_print_information(build_identity); + if (client->mode->index == MODE_NORMAL && !(client->flags & FLAG_ERASE) && !(client->flags & FLAG_SHSHONLY)) { + plist_t pver = normal_get_lockdown_value(client, NULL, "ProductVersion"); + char *device_version = NULL; + if (pver) { + plist_get_string_val(pver, &device_version); + plist_free(pver); + } + if (device_version && (compare_versions(device_version, client->version) > 0)) { + if (client->flags & FLAG_INTERACTIVE) { + char input[64]; + char spaces[16]; + int num_spaces = 13 - strlen(client->version) - strlen(device_version); + memset(spaces, ' ', num_spaces); + spaces[num_spaces] = '\0'; + printf("################################ [ WARNING ] #################################\n" + "# You are trying to DOWNGRADE a %s device with an IPSW for %s while%s #\n" + "# trying to preserve the user data (Upgrade restore). This *might* work, but #\n" + "# there is a VERY HIGH chance it might FAIL BADLY with COMPLETE DATA LOSS. #\n" + "# Hit CTRL+C now if you want to abort the restore. #\n" + "# If you want to take the risk (and have a backup of your important data!) #\n" + "# type YES and press ENTER to continue. You have been warned. #\n" + "##############################################################################\n", + device_version, client->version, spaces); + while (1) { + printf("> "); + fflush(stdout); + fflush(stdin); + input[0] = '\0'; + get_user_input(input, 63, 0); + if (*input != '\0' && !strcmp(input, "YES")) { + break; + } else { + printf("Invalid input. Please type YES or hit CTRL+C to abort.\n"); + continue; + } + } + } + } + free(device_version); + } + if (client->flags & FLAG_ERASE && client->flags & FLAG_INTERACTIVE) { char input[64]; printf("################################ [ WARNING ] #################################\n" |