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/*
usbmuxd - iPhone/iPod Touch USB multiplex server daemon
Copyright (C) 2013 Nikias Bassen <nikias@gmx.li>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 or version 3.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/time.h>
#include <libimobiledevice/libimobiledevice.h>
#include <libimobiledevice/lockdown.h>
#include <libimobiledevice/notification_proxy.h>
#include "preflight.h"
#include "client.h"
#include "log.h"
#ifdef HAVE_LIBIMOBILEDEVICE
enum connection_type {
CONNECTION_USBMUXD = 1
};
struct idevice_private {
char *udid;
enum connection_type conn_type;
void *conn_data;
};
struct np_cb_data {
idevice_t dev;
np_client_t np;
};
static void set_untrusted_host_buid(lockdownd_client_t lockdown)
{
char* system_buid = NULL;
userpref_get_system_buid(&system_buid);
usbmuxd_log(LL_DEBUG, "%s: Setting UntrustedHostBUID to %s", __func__, system_buid);
lockdownd_set_value(lockdown, NULL, "UntrustedHostBUID", plist_new_string(system_buid));
free(system_buid);
}
static void np_callback(const char* notification, void* userdata)
{
struct np_cb_data *cbdata = (struct np_cb_data*)userdata;
idevice_t dev = cbdata->dev;
struct idevice_private *_dev = (struct idevice_private*)dev;
lockdownd_client_t lockdown = NULL;
lockdownd_error_t lerr;
if (strlen(notification) == 0) {
cbdata->np = NULL;
return;
}
if (strcmp(notification, "com.apple.mobile.lockdown.request_pair") == 0) {
usbmuxd_log(LL_INFO, "%s: user trusted this computer on device %s, pairing now", __func__, _dev->udid);
lerr = lockdownd_client_new(dev, &lockdown, "usbmuxd");
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Could not connect to lockdownd on device %s, lockdown error %d", __func__, _dev->udid, lerr);
return;
}
lerr = lockdownd_pair(lockdown, NULL);
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Pair failed for device %s, lockdown error %d", __func__, _dev->udid, lerr);
lockdownd_client_free(lockdown);
return;
}
lockdownd_client_free(lockdown);
// device will reconnect by itself at this point.
} else if (strcmp(notification, "com.apple.mobile.lockdown.request_host_buid") == 0) {
lerr = lockdownd_client_new(cbdata->dev, &lockdown, "usbmuxd");
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Could not connect to lockdownd on device %s, lockdown error %d", __func__, _dev->udid, lerr);
} else {
set_untrusted_host_buid(lockdown);
lockdownd_client_free(lockdown);
}
}
}
static void* preflight_worker_handle_device_add(void* userdata)
{
struct device_info *info = (struct device_info*)userdata;
struct idevice_private *_dev = (struct idevice_private*)malloc(sizeof(struct idevice_private));
_dev->udid = strdup(info->serial);
_dev->conn_type = CONNECTION_USBMUXD;
_dev->conn_data = (void*)(long)info->id;
idevice_t dev = (idevice_t)_dev;
lockdownd_client_t lockdown = NULL;
lockdownd_error_t lerr;
retry:
lerr = lockdownd_client_new(dev, &lockdown, "usbmuxd");
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Could not connect to lockdownd on device %s, lockdown error %d", __func__, _dev->udid, lerr);
goto leave;
}
char *type = NULL;
lerr = lockdownd_query_type(lockdown, &type);
if (!type) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Could not get lockdownd type from device %s, lockdown error %d", __func__, _dev->udid, lerr);
goto leave;
}
if (strcmp(type, "com.apple.mobile.lockdown") != 0) {
// make restore mode devices visible
client_device_add(info);
goto leave;
}
int is_device_paired = 0;
char *host_id = NULL;
userpref_device_record_get_host_id(dev->udid, &host_id);
lerr = lockdownd_start_session(lockdown, host_id, NULL, NULL);
free(host_id);
if (lerr == LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_INFO, "%s: StartSession success for device %s", __func__, _dev->udid);
client_device_add(info);
goto leave;
}
usbmuxd_log(LL_INFO, "%s: StartSession failed on device %s, lockdown error %d", __func__, _dev->udid, lerr);
switch (lerr) {
case LOCKDOWN_E_INVALID_HOST_ID:
usbmuxd_log(LL_INFO, "%s: Device %s is not paired with this host.", __func__, _dev->udid);
break;
case LOCKDOWN_E_SSL_ERROR:
usbmuxd_log(LL_ERROR, "%s: The stored pair record for device %s is invalid. Removing.", __func__, _dev->udid);
if (userpref_remove_device_record(_dev->udid) == 0) {
lockdownd_client_free(lockdown);
lockdown = NULL;
goto retry;
} else {
usbmuxd_log(LL_ERROR, "%s: Could not remove pair record for device %s\n", __func__, _dev->udid);
}
break;
default:
is_device_paired = 1;
break;
}
plist_t value = NULL;
lerr = lockdownd_get_value(lockdown, NULL, "ProductVersion", &value);
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Could not get ProductVersion from device %s, lockdown error %d", __func__, _dev->udid, lerr);
goto leave;
}
char* version_str = NULL;
plist_get_string_val(value, &version_str);
if (!version_str) {
usbmuxd_log(LL_ERROR, "%s: Could not get ProductVersion string from device %s handle %d", __func__, _dev->udid, (int)(long)_dev->conn_data);
goto leave;
}
int version_major = strtol(version_str, NULL, 10);
if (version_major >= 7) {
/* iOS 7.0 and later */
usbmuxd_log(LL_INFO, "%s: Found ProductVersion %s device %s", __func__, version_str, _dev->udid);
set_untrusted_host_buid(lockdown);
/* if not paired, trigger the trust dialog to make sure it appears */
if (!is_device_paired) {
lockdownd_pair(lockdown, NULL);
}
lockdownd_service_descriptor_t service = NULL;
lerr = lockdownd_start_service(lockdown, "com.apple.mobile.insecure_notification_proxy", &service);
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: Could not start insecure_notification_proxy on %s, lockdown error %d", __func__, _dev->udid, lerr);
goto leave;
}
np_client_t np = NULL;
np_client_new(dev, service, &np);
lockdownd_service_descriptor_free(service);
service = NULL;
lockdownd_client_free(lockdown);
lockdown = NULL;
struct np_cb_data cbdata;
cbdata.dev = dev;
cbdata.np = np;
np_set_notify_callback(np, np_callback, (void*)&cbdata);
const char* spec[] = {
"com.apple.mobile.lockdown.request_pair",
"com.apple.mobile.lockdown.request_host_buid",
NULL
};
np_observe_notifications(np, spec);
usbmuxd_log(LL_INFO, "%s: Waiting for user to trust this computer on device %s", __func__, _dev->udid);
/* TODO send notification to user's desktop */
while (cbdata.np) {
sleep(1);
}
if (cbdata.np) {
np_client_free(cbdata.np);
}
} else {
/* iOS 6.x and earlier */
lerr = lockdownd_pair(lockdown, NULL);
if (lerr != LOCKDOWN_E_SUCCESS) {
if (lerr == LOCKDOWN_E_PASSWORD_PROTECTED) {
usbmuxd_log(LL_INFO, "%s: Device %s is locked with a passcode. Cannot pair.", __func__, _dev->udid);
/* TODO send notification to user's desktop */
} else {
usbmuxd_log(LL_ERROR, "%s: ERROR: Pair failed for device %s, lockdown error %d", __func__, _dev->udid, lerr);
}
/* make device visible anyways */
client_device_add(info);
goto leave;
}
host_id = NULL;
userpref_device_record_get_host_id(dev->udid, &host_id);
lerr = lockdownd_start_session(lockdown, host_id, NULL, NULL);
free(host_id);
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR StartSession failed on device %s, lockdown error %d", __func__, _dev->udid, lerr);
goto leave;
}
lerr = lockdownd_validate_pair(lockdown, NULL);
if (lerr != LOCKDOWN_E_SUCCESS) {
usbmuxd_log(LL_ERROR, "%s: ERROR: ValidatePair failed for device %s, lockdown error %d", __func__, _dev->udid, lerr);
goto leave;
}
/* emit device added event and thus make device visible to clients */
client_device_add(info);
}
leave:
if (lockdown)
lockdownd_client_free(lockdown);
if (dev)
idevice_free(dev);
free(info);
return NULL;
}
#endif
void preflight_worker_device_add(struct device_info* info)
{
#ifdef HAVE_LIBIMOBILEDEVICE
struct device_info *infocopy = (struct device_info*)malloc(sizeof(struct device_info));
memcpy(infocopy, info, sizeof(struct device_info));
pthread_t th;
pthread_create(&th, NULL, preflight_worker_handle_device_add, infocopy);
#else
client_device_add(info);
#endif
}
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