lockdown: Prevent libplist assertion by checking result of userpref_read_pair_record()
diff --git a/src/lockdown.c b/src/lockdown.c
index 9b91dff..99bcbb5 100644
--- a/src/lockdown.c
+++ b/src/lockdown.c
@@ -752,8 +752,9 @@
plist_t pair_record = NULL;
userpref_read_pair_record(client_loc->udid, &pair_record);
-
- pair_record_get_host_id(pair_record, &host_id);
+ if (pair_record) {
+ pair_record_get_host_id(pair_record, &host_id);
+ }
if (LOCKDOWN_E_SUCCESS == ret && !host_id) {
ret = LOCKDOWN_E_INVALID_CONF;
}
@@ -783,8 +784,10 @@
if (LOCKDOWN_E_SUCCESS == ret) {
if (!host_id) {
userpref_read_pair_record(client_loc->udid, &pair_record);
- pair_record_get_host_id(pair_record, &host_id);
- plist_free(pair_record);
+ if (pair_record) {
+ pair_record_get_host_id(pair_record, &host_id);
+ plist_free(pair_record);
+ }
}
ret = lockdownd_start_session(client_loc, host_id, NULL, NULL);
@@ -950,6 +953,9 @@
/* use existing pair record */
if (userpref_has_pair_record(client->udid)) {
userpref_read_pair_record(client->udid, &pair_record_plist);
+ if (!pair_record_plist) {
+ return LOCKDOWN_E_INVALID_CONF;
+ }
} else {
return LOCKDOWN_E_INVALID_HOST_ID;
}