SystemConfiguration.fproj/SCNetworkSignature.h

   1 /*
   2  * Copyright (c) 2006, 2008, 2011 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 #ifndef _SCNETWORKSIGNATURE_H
  25 #define _SCNETWORKSIGNATURE_H
  26
  27 #include <Availability.h>
  28 #include <sys/cdefs.h>
  29 #include <CoreFoundation/CFString.h>
  30 #include <CoreFoundation/CFArray.h>
  31 #include <netinet/in.h>
  32
  33 __BEGIN_DECLS
  34
  35 /*!
  36         @header SCNetworkSignature
  37         @discussion The SCNetworkSignature API provides access to the
  38                 network identification information.  Each routable network
  39                 has an associated signature that is assigned a unique
  40                 identifier.  The unique identifier allows an application
  41                 to associate settings with a particular network
  42                 or set of networks.
  43  */
  44
  45 /*!
  46         @const kSCNetworkSignatureActiveChangedNotifyName
  47         @discussion The name to use with the notify(3) API's to monitor
  48                 when the list of active signatures changes.
  49  */
  50 extern const char * kSCNetworkSignatureActiveChangedNotifyName;
  51
  52 /*!
  53         @function SCNetworkSignatureCopyActiveIdentifiers
  54         @discussion Find all currently active networks and return a list of
  55                 (string) identifiers, one for each network.
  56         @param allocator The CFAllocator that should be used to allocate
  57                 memory for the local dynamic store object.
  58                 This parameter may be NULL in which case the current
  59                 default CFAllocator is used. If this reference is not
  60                 a valid CFAllocator, the behavior is undefined.
  61         @result A CFArrayRef containing a list of (string) identifiers,
  62                 NULL if no networks are currently active.
  63  */
  64 CFArrayRef /* of CFStringRef's */
  65 SCNetworkSignatureCopyActiveIdentifiers(CFAllocatorRef alloc)                   __OSX_AVAILABLE_STARTING(__MAC_10_5,__IPHONE_2_0/*SPI*/);
  66
  67 /*!
  68         @function SCNetworkSignatureCopyActiveIdentifierForAddress
  69         @discussion Find the one active network associated with the specified
  70                 address and return the unique (string) identifier that
  71                 represents it.
  72         @param allocator The CFAllocator that should be used to allocate
  73                 memory for the local dynamic store object.
  74                 This parameter may be NULL in which case the current
  75                 default CFAllocator is used. If this reference is not
  76                 a valid CFAllocator, the behavior is undefined.
  77         @param addr The address of interest.  Note: currently only AF_INET
  78                 0.0.0.0 is supported, passing anything else always returns
  79                 NULL.
  80         @result The unique (string) identifier associated with the address,
  81                 NULL if no network is known.
  82  */
  83 CFStringRef
  84 SCNetworkSignatureCopyActiveIdentifierForAddress(CFAllocatorRef alloc,
  85                                                  const struct sockaddr * addr)  __OSX_AVAILABLE_STARTING(__MAC_10_5,__IPHONE_2_0/*SPI*/);
  86
  87 /*!
  88         @function SCNetworkSignatureCopyIdentifierForConnectedSocket
  89         @discussion Find the identifier for the given file descriptor
  90                 corresponding to a connected socket.
  91         @param allocator The CFAllocator that should be used to allocate
  92                 memory for the local dynamic store object.
  93                 This parameter may be NULL in which case the current
  94                 default CFAllocator is used. If this reference is not
  95                 a valid CFAllocator, the behavior is undefined.
  96         @param sock_fd The socket file descriptor, must be either AF_INET
  97                 or AF_INET6.
  98         @result The unique (string) identifier associated with the address,
  99                 NULL if no network is known.
 100  */
 101 CFStringRef
 102 SCNetworkSignatureCopyIdentifierForConnectedSocket(CFAllocatorRef alloc,
 103                                                    int sock_fd) __OSX_AVAILABLE_STARTING(__MAC_10_7,__IPHONE_5_0/*SPI*/);
 104
 105 __END_DECLS
 106
 107 #endif  /* _SCNETWORKSIGNATURE_H */