mDNSMacOSX/CUPolicy.c

   1 /* -*- Mode: C; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2013 Apple Computer, Inc. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #include "mDNSMacOSX.h"
  19 #include <network/config.h>
  20
  21 #if TARGET_OS_IPHONE
  22
  23 mDNSexport void CUPInit(mDNS *const m)
  24 {
  25
  26     m->p->handle = cellular_usage_policy_create_client();
  27     if (!m->p->handle)
  28     {
  29         LogMsg("CUPInit: cellular_usage_policy_create_client failed");
  30     }
  31 }
  32
  33 mDNSexport mDNSBool mDNSPlatformAllowPID(mDNS *const m, DNSQuestion *q)
  34 {
  35     // Currently the policy applies only for DNS requests sent over cellular interface
  36     if (m->p->handle && q->qDNSServer && q->qDNSServer->cellIntf)
  37     {
  38         mDNSBool allowed;
  39         if (q->pid)
  40         {
  41             allowed = (mDNSBool) cellular_usage_policy_is_data_allowed_for_pid(m->p->handle, q->pid);
  42             if (!allowed)
  43             {
  44                 xpc_object_t pidx = xpc_uint64_create(q->pid);
  45                 if (pidx)
  46                 {
  47                     network_config_cellular_blocked_notify(pidx, NULL, NULL);
  48                     LogInfo("mDNSPlaformAllowPID: Notified PID(%d) for %##s (%s)", q->pid, q->qname.c, DNSTypeName(q->qtype));
  49                     xpc_release(pidx);
  50                 }
  51             }
  52         }
  53         else
  54         {
  55            xpc_object_t uuidx = xpc_uuid_create(q->uuid);
  56            if (uuidx)
  57            {
  58                allowed = (mDNSBool) cellular_usage_policy_is_data_allowed_for_uuid(m->p->handle, uuidx);
  59                if (!allowed)
  60                {
  61                    network_config_cellular_blocked_notify(NULL, uuidx, NULL);
  62                    LogInfo("mDNSPlaformAllowPID: Notified UUID for %##s (%s)", q->qname.c, DNSTypeName(q->qtype));
  63                }
  64                xpc_release(uuidx);
  65            }
  66            else
  67            {
  68                allowed = false;
  69            }
  70        }
  71         return allowed;
  72     }
  73     else
  74     {
  75         return mDNStrue;
  76     }
  77 }
  78
  79 #else // TARGET_OS_IPHONE
  80
  81 mDNSexport void CUPInit(mDNS *const m)
  82 {
  83     (void)m; //unused
  84 }
  85
  86 mDNSexport mDNSBool mDNSPlatformAllowPID(mDNS *const m, DNSQuestion *q)
  87 {
  88     (void)m;    //unused
  89     (void)q;    //unused
  90     //LogMsg("mDNSPlatformAllowPID: %##s (%s)", q->qname.c, DNSTypeName(q->qtype));
  91     return mDNStrue;
  92 }
  93
  94 #endif // TARGET_OS_IPHONE
  95