1 #pragma ident "%Z%%M% %I% %E% SMI" 2 3 /* 4 * include/foreachaddr.c 5 * 6 * Copyright 1990,1991,2000,2001,2002,2004 by the Massachusetts Institute of Technology. 7 * All Rights Reserved. 8 * 9 * Export of this software from the United States of America may 10 * require a specific license from the United States Government. 11 * It is the responsibility of any person or organization contemplating 12 * export to obtain such a license before exporting. 13 * 14 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 15 * distribute this software and its documentation for any purpose and 16 * without fee is hereby granted, provided that the above copyright 17 * notice appear in all copies and that both that copyright notice and 18 * this permission notice appear in supporting documentation, and that 19 * the name of M.I.T. not be used in advertising or publicity pertaining 20 * to distribution of the software without specific, written prior 21 * permission. Furthermore if you modify this software you must label 22 * your software as modified software and not distribute it in such a 23 * fashion that it might be confused with the original M.I.T. software. 24 * M.I.T. makes no representations about the suitability of 25 * this software for any purpose. It is provided "as is" without express 26 * or implied warranty. 27 * 28 * 29 * Iterate over the protocol addresses supported by this host, invoking 30 * a callback function or three supplied by the caller. 31 * 32 * XNS support is untested, but "should just work". (Hah!) 33 */ 34 35 /* This function iterates over all the addresses it can find for the 36 local system, in one or two passes. In each pass, and between the 37 two, it can invoke callback functions supplied by the caller. The 38 two passes should operate on the same information, though not 39 necessarily in the same order each time. Duplicate and local 40 addresses should be eliminated. Storage passed to callback 41 functions should not be assumed to be valid after foreach_localaddr 42 returns. 43 44 The int return value is an errno value (XXX or krb5_error_code 45 returned for a socket error) if something internal to 46 foreach_localaddr fails. If one of the callback functions wants to 47 indicate an error, it should store something via the 'data' handle. 48 If any callback function returns a non-zero value, 49 foreach_localaddr will clean up and return immediately. 50 51 Multiple definitions are provided below, dependent on various 52 system facilities for extracting the necessary information. */ 53 54 extern int 55 krb5int_foreach_localaddr (/*@null@*/ void *data, 56 int (*pass1fn) (/*@null@*/ void *, 57 struct sockaddr *) /*@*/, 58 /*@null@*/ int (*betweenfn) (/*@null@*/ void *) /*@*/, 59 /*@null@*/ int (*pass2fn) (/*@null@*/ void *, 60 struct sockaddr *) /*@*/) 61 #if defined(DEBUG) || defined(TEST) 62 /*@modifies fileSystem@*/ 63 #endif 64 ; 65 66 #define foreach_localaddr krb5int_foreach_localaddr 67