SystemConfiguration.fproj/SCNetwork.c

   1 /*
   2  * Copyright (c) 2000, 2001, 2003-2007, 2018 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25  * Modification History
  26  *
  27  * January 19, 2003             Allan Nathanson <ajn@apple.com>
  28  * - add advanced reachability APIs
  29  *
  30  * June 10, 2001                Allan Nathanson <ajn@apple.com>
  31  * - updated to use service-based "State:" information
  32  *
  33  * June 1, 2001                 Allan Nathanson <ajn@apple.com>
  34  * - public API conversion
  35  *
  36  * January 30, 2001             Allan Nathanson <ajn@apple.com>
  37  * - initial revision
  38  */
  39
  40 #include <sys/types.h>
  41 #include <netinet/in.h>
  42 #include <unistd.h>
  43 #include <sys/socket.h>
  44
  45 #include <SystemConfiguration/SystemConfiguration.h>
  46 #include <SystemConfiguration/SCPrivate.h>
  47
  48 Boolean
  49 SCNetworkCheckReachabilityByAddress(const struct sockaddr       *address,
  50                                     socklen_t                   addrlen,
  51                                     SCNetworkConnectionFlags    *flags)
  52 {
  53         SCNetworkReachabilityRef                networkAddress;
  54         Boolean                 ok;
  55         struct sockaddr_storage ss;
  56
  57         if (!address ||
  58             (addrlen == 0) ||
  59             (addrlen > (int)sizeof(struct sockaddr_storage))) {
  60                 _SCErrorSet(kSCStatusInvalidArgument);
  61                 return FALSE;
  62         }
  63
  64         memset(&ss, 0, sizeof(ss));
  65         memcpy(&ss, address, addrlen);
  66         ss.ss_len = addrlen;
  67
  68         networkAddress = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&ss);
  69         if (networkAddress == NULL) {
  70                 return FALSE;
  71         }
  72
  73         ok = SCNetworkReachabilityGetFlags(networkAddress, flags);
  74         CFRelease(networkAddress);
  75         return ok;
  76 }
  77
  78
  79 Boolean
  80 SCNetworkCheckReachabilityByName(const char                     *nodename,
  81                                  SCNetworkConnectionFlags       *flags)
  82 {
  83         SCNetworkReachabilityRef        networkAddress;
  84         Boolean                         ok;
  85
  86         if (!nodename) {
  87                 _SCErrorSet(kSCStatusInvalidArgument);
  88                 return FALSE;
  89         }
  90
  91         networkAddress = SCNetworkReachabilityCreateWithName(NULL, nodename);
  92         if (networkAddress == NULL) {
  93                 return FALSE;
  94         }
  95
  96         ok = SCNetworkReachabilityGetFlags(networkAddress, flags);
  97         CFRelease(networkAddress);
  98         return ok;
  99 }