17c478bd9Sstevel@tonic-gate /* 2*9525b14bSRao Shoaib * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 37c478bd9Sstevel@tonic-gate * Copyright (c) 1996,1999 by Internet Software Consortium. 47c478bd9Sstevel@tonic-gate * 57c478bd9Sstevel@tonic-gate * Permission to use, copy, modify, and distribute this software for any 67c478bd9Sstevel@tonic-gate * purpose with or without fee is hereby granted, provided that the above 77c478bd9Sstevel@tonic-gate * copyright notice and this permission notice appear in all copies. 87c478bd9Sstevel@tonic-gate * 9*9525b14bSRao Shoaib * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 10*9525b14bSRao Shoaib * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11*9525b14bSRao Shoaib * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 12*9525b14bSRao Shoaib * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13*9525b14bSRao Shoaib * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14*9525b14bSRao Shoaib * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 15*9525b14bSRao Shoaib * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 167c478bd9Sstevel@tonic-gate */ 177c478bd9Sstevel@tonic-gate 187c478bd9Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint) 19*9525b14bSRao Shoaib static const char rcsid[] = "$Id: inet_neta.c,v 1.3 2005/04/27 04:56:20 sra Exp $"; 207c478bd9Sstevel@tonic-gate #endif 217c478bd9Sstevel@tonic-gate 227c478bd9Sstevel@tonic-gate #include "port_before.h" 237c478bd9Sstevel@tonic-gate 247c478bd9Sstevel@tonic-gate #include <sys/types.h> 257c478bd9Sstevel@tonic-gate #include <sys/socket.h> 267c478bd9Sstevel@tonic-gate #include <netinet/in.h> 277c478bd9Sstevel@tonic-gate #include <arpa/inet.h> 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate #include <errno.h> 307c478bd9Sstevel@tonic-gate #include <stdio.h> 317c478bd9Sstevel@tonic-gate #include <string.h> 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #include "port_after.h" 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate #ifdef SPRINTF_CHAR 367c478bd9Sstevel@tonic-gate # define SPRINTF(x) strlen(sprintf/**/x) 377c478bd9Sstevel@tonic-gate #else 387c478bd9Sstevel@tonic-gate # define SPRINTF(x) ((size_t)sprintf x) 397c478bd9Sstevel@tonic-gate #endif 407c478bd9Sstevel@tonic-gate 41*9525b14bSRao Shoaib /*% 427c478bd9Sstevel@tonic-gate * char * 437c478bd9Sstevel@tonic-gate * inet_neta(src, dst, size) 447c478bd9Sstevel@tonic-gate * format a u_long network number into presentation format. 457c478bd9Sstevel@tonic-gate * return: 467c478bd9Sstevel@tonic-gate * pointer to dst, or NULL if an error occurred (check errno). 477c478bd9Sstevel@tonic-gate * note: 487c478bd9Sstevel@tonic-gate * format of ``src'' is as for inet_network(). 497c478bd9Sstevel@tonic-gate * author: 507c478bd9Sstevel@tonic-gate * Paul Vixie (ISC), July 1996 517c478bd9Sstevel@tonic-gate */ 527c478bd9Sstevel@tonic-gate char * 537c478bd9Sstevel@tonic-gate inet_neta(src, dst, size) 547c478bd9Sstevel@tonic-gate u_long src; 557c478bd9Sstevel@tonic-gate char *dst; 567c478bd9Sstevel@tonic-gate size_t size; 577c478bd9Sstevel@tonic-gate { 587c478bd9Sstevel@tonic-gate char *odst = dst; 597c478bd9Sstevel@tonic-gate char *tp; 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate while (src & 0xffffffff) { 627c478bd9Sstevel@tonic-gate u_char b = (src & 0xff000000) >> 24; 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate src <<= 8; 657c478bd9Sstevel@tonic-gate if (b) { 667c478bd9Sstevel@tonic-gate if (size < sizeof "255.") 677c478bd9Sstevel@tonic-gate goto emsgsize; 687c478bd9Sstevel@tonic-gate tp = dst; 697c478bd9Sstevel@tonic-gate dst += SPRINTF((dst, "%u", b)); 707c478bd9Sstevel@tonic-gate if (src != 0L) { 717c478bd9Sstevel@tonic-gate *dst++ = '.'; 727c478bd9Sstevel@tonic-gate *dst = '\0'; 737c478bd9Sstevel@tonic-gate } 747c478bd9Sstevel@tonic-gate size -= (size_t)(dst - tp); 757c478bd9Sstevel@tonic-gate } 767c478bd9Sstevel@tonic-gate } 777c478bd9Sstevel@tonic-gate if (dst == odst) { 787c478bd9Sstevel@tonic-gate if (size < sizeof "0.0.0.0") 797c478bd9Sstevel@tonic-gate goto emsgsize; 807c478bd9Sstevel@tonic-gate strcpy(dst, "0.0.0.0"); 817c478bd9Sstevel@tonic-gate } 827c478bd9Sstevel@tonic-gate return (odst); 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate emsgsize: 857c478bd9Sstevel@tonic-gate errno = EMSGSIZE; 867c478bd9Sstevel@tonic-gate return (NULL); 877c478bd9Sstevel@tonic-gate } 88*9525b14bSRao Shoaib 89*9525b14bSRao Shoaib /*! \file */ 90