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-rw-r--r--tools/idevicebackup2.c299
1 files changed, 275 insertions, 24 deletions
diff --git a/tools/idevicebackup2.c b/tools/idevicebackup2.c
index c32e2e4..4ca0f2a 100644
--- a/tools/idevicebackup2.c
+++ b/tools/idevicebackup2.c
@@ -49,6 +49,7 @@
#include <windows.h>
#define sleep(x) Sleep(x*1000)
#else
+#include <termios.h>
#include <sys/statvfs.h>
#endif
@@ -73,6 +74,7 @@ enum cmd_mode {
CMD_INFO,
CMD_LIST,
CMD_UNBACK,
+ CMD_CHANGEPW,
CMD_LEAVE
};
@@ -86,14 +88,21 @@ enum cmd_flags {
CMD_FLAG_RESTORE_REBOOT = (1 << 2),
CMD_FLAG_RESTORE_COPY_BACKUP = (1 << 3),
CMD_FLAG_RESTORE_SETTINGS = (1 << 4),
- CMD_FLAG_RESTORE_REMOVE_ITEMS = (1 << 5)
+ CMD_FLAG_RESTORE_REMOVE_ITEMS = (1 << 5),
+ CMD_FLAG_ENCRYPTION_ENABLE = (1 << 6),
+ CMD_FLAG_ENCRYPTION_DISABLE = (1 << 7),
+ CMD_FLAG_ENCRYPTION_CHANGEPW = (1 << 8)
};
+static int backup_domain_changed = 0;
+
static void notify_cb(const char *notification, void *userdata)
{
if (!strcmp(notification, NP_SYNC_CANCEL_REQUEST)) {
PRINT_VERBOSE(1, "User has cancelled the backup process on the device.\n");
quit_flag++;
+ } else if (!strcmp(notification, NP_BACKUP_DOMAIN_CHANGED)) {
+ backup_domain_changed = 1;
} else {
PRINT_VERBOSE(1, "Unhandled notification '%s' (TODO: implement)\n", notification);
}
@@ -1131,6 +1140,72 @@ static void mb2_copy_directory_by_path(const char *src, const char *dst)
}
}
+#ifdef WIN32
+#define BS_CC '\b'
+#define my_getch getch
+#else
+#define BS_CC 0x7f
+static int my_getch()
+{
+ struct termios oldt, newt;
+ int ch;
+ tcgetattr(STDIN_FILENO, &oldt);
+ newt = oldt;
+ newt.c_lflag &= ~(ICANON | ECHO);
+ tcsetattr(STDIN_FILENO, TCSANOW, &newt);
+ ch = getchar();
+ tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
+ return ch;
+}
+#endif
+
+static void get_hidden_input(char *buf, int maxlen)
+{
+ int pwlen = 0;
+ int c;
+
+ while ((c = my_getch())) {
+ if ((c == '\r') || (c == '\n')) {
+ break;
+ } else if (isprint(c)) {
+ if (pwlen < maxlen-1)
+ buf[pwlen++] = c;
+ fputc('*', stderr);
+ } else if (c == BS_CC) {
+ if (pwlen > 0) {
+ fputs("\b \b", stderr);
+ pwlen--;
+ }
+ }
+ }
+ buf[pwlen] = 0;
+}
+
+static char* ask_for_password(const char* msg, int type_again)
+{
+ char pwbuf[256];
+
+ fprintf(stderr, "%s: ", msg);
+ fflush(stderr);
+ get_hidden_input(pwbuf, 256);
+ fputc('\n', stderr);
+
+ if (type_again) {
+ char pwrep[256];
+
+ fprintf(stderr, "%s (repeat): ", msg);
+ fflush(stderr);
+ get_hidden_input(pwrep, 256);
+ fputc('\n', stderr);
+
+ if (strcmp(pwbuf, pwrep) != 0) {
+ printf("ERROR: passwords don't match\n");
+ return NULL;
+ }
+ }
+ return strdup(pwbuf);
+}
+
/**
* signal handler function for cleaning up properly
*/
@@ -1157,7 +1232,12 @@ static void print_usage(int argc, char **argv)
printf(" --password PWD\tsupply the password of the source backup\n");
printf(" info\t\tshow details about last completed backup of device\n");
printf(" list\t\tlist files of last completed backup in CSV format\n");
- printf(" unback\tunpack a completed backup in DIRECTORY/_unback_/\n\n");
+ printf(" unback\tunpack a completed backup in DIRECTORY/_unback_/\n");
+ printf(" encryption on|off [PWD]\tenable or disable backup encryption\n");
+ printf(" NOTE: if password is omitted it will be requested interactively\n");
+ printf(" changepw [OLD NEW] change backup password on target device\n");
+ printf(" NOTE: if no passwords are given the change will be performed interactively.\n");
+ printf("\n");
printf("options:\n");
printf(" -d, --debug\t\tenable communication debugging\n");
printf(" -u, --udid UDID\ttarget specific device by its 40-digit device UDID\n");
@@ -1178,6 +1258,7 @@ int main(int argc, char *argv[])
int is_full_backup = 0;
char* backup_directory = NULL;
char* backup_password = NULL;
+ char* newpw = NULL;
struct stat st;
plist_t node_tmp = NULL;
plist_t info_plist = NULL;
@@ -1263,6 +1344,65 @@ int main(int argc, char *argv[])
else if (!strcmp(argv[i], "unback")) {
cmd = CMD_UNBACK;
}
+ else if (!strcmp(argv[i], "encryption")) {
+ cmd = CMD_CHANGEPW;
+ i++;
+ if (!argv[i]) {
+ printf("No argument given for encryption command; requires either 'on' or 'off'.\n");
+ print_usage(argc, argv);
+ return 0;
+ }
+ if (!strcmp(argv[i], "on")) {
+ cmd_flags |= CMD_FLAG_ENCRYPTION_ENABLE;
+ } else if (!strcmp(argv[i], "off")) {
+ cmd_flags |= CMD_FLAG_ENCRYPTION_DISABLE;
+ } else {
+ printf("Invalid argument '%s' for encryption command; must be either 'on' or 'off'.\n", argv[i]);
+ }
+ // check if a password was given on the command line
+ if (newpw) {
+ free(newpw);
+ newpw = NULL;
+ }
+ if (backup_password) {
+ free(backup_password);
+ backup_password = NULL;
+ }
+ i++;
+ if (argv[i]) {
+ if (cmd_flags & CMD_FLAG_ENCRYPTION_ENABLE) {
+ newpw = strdup(argv[i]);
+ } else if (cmd_flags & CMD_FLAG_ENCRYPTION_DISABLE) {
+ backup_password = strdup(argv[i]);
+ }
+ }
+ continue;
+ }
+ else if (!strcmp(argv[i], "changepw")) {
+ cmd = CMD_CHANGEPW;
+ cmd_flags |= CMD_FLAG_ENCRYPTION_CHANGEPW;
+ // check if passwords were given on command line
+ if (newpw) {
+ free(newpw);
+ newpw = NULL;
+ }
+ if (backup_password) {
+ free(backup_password);
+ backup_password = NULL;
+ }
+ i++;
+ if (argv[i]) {
+ backup_password = strdup(argv[i]);
+ i++;
+ if (!argv[i]) {
+ printf("Old and new passwords have to be passed as arguments for the changepw command\n");
+ print_usage(argc, argv);
+ return 0;
+ }
+ newpw = strdup(argv[i]);
+ }
+ continue;
+ }
else if (backup_directory == NULL) {
backup_directory = argv[i];
}
@@ -1279,16 +1419,20 @@ int main(int argc, char *argv[])
return -1;
}
- if (backup_directory == NULL) {
- printf("No target backup directory specified.\n");
- print_usage(argc, argv);
- return -1;
- }
+ if (cmd == CMD_CHANGEPW) {
+ backup_directory = strdup(".this_folder_is_not_present_on_purpose");
+ } else {
+ if (backup_directory == NULL) {
+ printf("No target backup directory specified.\n");
+ print_usage(argc, argv);
+ return -1;
+ }
- /* verify if passed backup directory exists */
- if (stat(backup_directory, &st) != 0) {
- printf("ERROR: Backup directory \"%s\" does not exist!\n", backup_directory);
- return -1;
+ /* verify if passed backup directory exists */
+ if (stat(backup_directory, &st) != 0) {
+ printf("ERROR: Backup directory \"%s\" does not exist!\n", backup_directory);
+ return -1;
+ }
}
if (udid) {
@@ -1312,18 +1456,20 @@ int main(int argc, char *argv[])
source_udid = strdup(udid);
}
- /* backup directory must contain an Info.plist */
- char *info_path = build_path(backup_directory, source_udid, "Info.plist", NULL);
- if (cmd == CMD_RESTORE) {
- if (stat(info_path, &st) != 0) {
- free(info_path);
- printf("ERROR: Backup directory \"%s\" is invalid. No Info.plist found for UDID %s.\n", backup_directory, source_udid);
- return -1;
+ char *info_path = NULL;
+ if (cmd != CMD_CHANGEPW) {
+ /* backup directory must contain an Info.plist */
+ info_path = build_path(backup_directory, source_udid, "Info.plist", NULL);
+ if (cmd == CMD_RESTORE) {
+ if (stat(info_path, &st) != 0) {
+ free(info_path);
+ printf("ERROR: Backup directory \"%s\" is invalid. No Info.plist found for UDID %s.\n", backup_directory, source_udid);
+ return -1;
+ }
}
+ PRINT_VERBOSE(1, "Backup directory is \"%s\"\n", backup_directory);
}
- PRINT_VERBOSE(1, "Backup directory is \"%s\"\n", backup_directory);
-
if (LOCKDOWN_E_SUCCESS != lockdownd_client_new_with_handshake(device, &client, "idevicebackup")) {
idevice_free(device);
return -1;
@@ -1384,7 +1530,7 @@ int main(int argc, char *argv[])
}
/* verify existing Info.plist */
- if (stat(info_path, &st) == 0) {
+ if (info_path && (stat(info_path, &st) == 0)) {
PRINT_VERBOSE(1, "Reading Info.plist from backup.\n");
plist_read_from_filename(&info_plist, info_path);
@@ -1431,6 +1577,16 @@ int main(int argc, char *argv[])
cmd = CMD_LEAVE;
}
}
+ uint8_t willEncrypt = 0;
+ node_tmp = NULL;
+ lockdownd_get_value(client, "com.apple.mobile.backup", "WillEncrypt", &node_tmp);
+ if (node_tmp) {
+ if (plist_get_node_type(node_tmp) == PLIST_BOOLEAN) {
+ plist_get_bool_val(node_tmp, &willEncrypt);
+ }
+ plist_free(node_tmp);
+ node_tmp = NULL;
+ }
checkpoint:
@@ -1472,8 +1628,12 @@ checkpoint:
info_plist = NULL;
/* request backup from device with manifest from last backup */
- PRINT_VERBOSE(1, "Requesting backup from device...\n");
-
+ if (willEncrypt) {
+ PRINT_VERBOSE(1, "Backup will be encrypted.\n");
+ } else {
+ PRINT_VERBOSE(1, "Backup will be unencrypted.\n");
+ }
+ PRINT_VERBOSE(1, "Requesting backup from device...\n");
err = mobilebackup2_send_request(mobilebackup2, "Backup", udid, source_udid, NULL);
if (err == MOBILEBACKUP2_E_SUCCESS) {
if (is_full_backup) {
@@ -1560,6 +1720,76 @@ checkpoint:
cmd = CMD_LEAVE;
}
break;
+ case CMD_CHANGEPW:
+ opts = plist_new_dict();
+ plist_dict_insert_item(opts, "TargetIdentifier", plist_new_string(udid));
+ if (cmd_flags & CMD_FLAG_ENCRYPTION_ENABLE) {
+ if (!willEncrypt) {
+ if (!newpw) {
+ newpw = ask_for_password("Enter new backup password", 1);
+ }
+ if (!newpw) {
+ printf("No backup password given. Aborting.\n");
+ }
+ } else {
+ printf("ERROR: Backup encryption is already enabled. Aborting.\n");
+ cmd = CMD_LEAVE;
+ if (newpw) {
+ free(newpw);
+ newpw = NULL;
+ }
+ }
+ } else if (cmd_flags & CMD_FLAG_ENCRYPTION_DISABLE) {
+ if (willEncrypt) {
+ if (!backup_password) {
+ backup_password = ask_for_password("Enter current backup password", 0);
+ }
+ } else {
+ printf("ERROR: Backup encryption is not enabled. Aborting.\n");
+ cmd = CMD_LEAVE;
+ if (backup_password) {
+ free(backup_password);
+ backup_password = NULL;
+ }
+ }
+ } else if (cmd_flags & CMD_FLAG_ENCRYPTION_CHANGEPW) {
+ if (willEncrypt) {
+ if (!backup_password) {
+ backup_password = ask_for_password("Enter old backup password", 0);
+ newpw = ask_for_password("Enter new backup password", 1);
+ }
+ } else {
+ printf("ERROR: Backup encryption is not enabled so can't change password. Aborting.\n");
+ cmd = CMD_LEAVE;
+ if (newpw) {
+ free(newpw);
+ newpw = NULL;
+ }
+ if (backup_password) {
+ free(backup_password);
+ backup_password = NULL;
+ }
+ }
+ }
+ if (newpw) {
+ plist_dict_insert_item(opts, "NewPassword", plist_new_string(newpw));
+ }
+ if (backup_password) {
+ plist_dict_insert_item(opts, "OldPassword", plist_new_string(backup_password));
+ }
+ if (newpw || backup_password) {
+ mobilebackup2_send_message(mobilebackup2, "ChangePassword", opts);
+ /*if (cmd_flags & CMD_FLAG_ENCRYPTION_ENABLE) {
+ int retr = 10;
+ while ((retr-- >= 0) && !backup_domain_changed) {
+ sleep(1);
+ }
+ }*/
+ } else {
+ cmd = CMD_LEAVE;
+ }
+ plist_free(opts);
+ break;
default:
break;
}
@@ -1592,7 +1822,7 @@ checkpoint:
sleep(2);
goto files_out;
}
-
+
if (!strcmp(dlmsg, "DLMessageDownloadFiles")) {
/* device wants to download files from the computer */
mb2_handle_send_files(message, backup_directory);
@@ -1860,6 +2090,27 @@ files_out:
PRINT_VERBOSE(1, "Unback Successful.\n");
}
break;
+ case CMD_CHANGEPW:
+ if (cmd_flags & CMD_FLAG_ENCRYPTION_ENABLE) {
+ if (operation_ok) {
+ PRINT_VERBOSE(1, "Backup encryption has been enabled successfully.\n");
+ } else {
+ PRINT_VERBOSE(1, "Could not enable backup encryption.\n");
+ }
+ } else if (cmd_flags & CMD_FLAG_ENCRYPTION_DISABLE) {
+ if (operation_ok) {
+ PRINT_VERBOSE(1, "Backup encryption has been disabled successfully.\n");
+ } else {
+ PRINT_VERBOSE(1, "Could not disable backup encryption.\n");
+ }
+ } else if (cmd_flags & CMD_FLAG_ENCRYPTION_CHANGEPW) {
+ if (operation_ok) {
+ PRINT_VERBOSE(1, "Backup encryption password has been changed successfully.\n");
+ } else {
+ PRINT_VERBOSE(1, "Could not change backup encryption password.\n");
+ }
+ }
+ break;
case CMD_RESTORE:
if (cmd_flags & CMD_FLAG_RESTORE_REBOOT)
PRINT_VERBOSE(1, "The device should reboot now.\n");
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