1 /* 2 * include/foreachaddr.c 3 * 4 * Copyright 1990,1991,2000,2001,2002,2004 by the Massachusetts Institute of Technology. 5 * All Rights Reserved. 6 * 7 * Export of this software from the United States of America may 8 * require a specific license from the United States Government. 9 * It is the responsibility of any person or organization contemplating 10 * export to obtain such a license before exporting. 11 * 12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 13 * distribute this software and its documentation for any purpose and 14 * without fee is hereby granted, provided that the above copyright 15 * notice appear in all copies and that both that copyright notice and 16 * this permission notice appear in supporting documentation, and that 17 * the name of M.I.T. not be used in advertising or publicity pertaining 18 * to distribution of the software without specific, written prior 19 * permission. Furthermore if you modify this software you must label 20 * your software as modified software and not distribute it in such a 21 * fashion that it might be confused with the original M.I.T. software. 22 * M.I.T. makes no representations about the suitability of 23 * this software for any purpose. It is provided "as is" without express 24 * or implied warranty. 25 * 26 * 27 * Iterate over the protocol addresses supported by this host, invoking 28 * a callback function or three supplied by the caller. 29 * 30 * XNS support is untested, but "should just work". (Hah!) 31 */ 32 33 /* This function iterates over all the addresses it can find for the 34 local system, in one or two passes. In each pass, and between the 35 two, it can invoke callback functions supplied by the caller. The 36 two passes should operate on the same information, though not 37 necessarily in the same order each time. Duplicate and local 38 addresses should be eliminated. Storage passed to callback 39 functions should not be assumed to be valid after foreach_localaddr 40 returns. 41 42 The int return value is an errno value (XXX or krb5_error_code 43 returned for a socket error) if something internal to 44 foreach_localaddr fails. If one of the callback functions wants to 45 indicate an error, it should store something via the 'data' handle. 46 If any callback function returns a non-zero value, 47 foreach_localaddr will clean up and return immediately. 48 49 Multiple definitions are provided below, dependent on various 50 system facilities for extracting the necessary information. */ 51 52 extern int 53 krb5int_foreach_localaddr (/*@null@*/ void *data, 54 int (*pass1fn) (/*@null@*/ void *, 55 struct sockaddr *) /*@*/, 56 /*@null@*/ int (*betweenfn) (/*@null@*/ void *) /*@*/, 57 /*@null@*/ int (*pass2fn) (/*@null@*/ void *, 58 struct sockaddr *) /*@*/) 59 #if defined(DEBUG) || defined(TEST) 60 /*@modifies fileSystem@*/ 61 #endif 62 ; 63 64 #define foreach_localaddr krb5int_foreach_localaddr 65