1 /* -*- Mode: C; tab-width: 4 -*- 2 * 3 * Copyright (c) 2003-2004, Apple Computer, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of its 14 * contributors may be used to endorse or promote products derived from this 15 * software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 Change History (most recent first): 29 30 $Log: dnssd_ipc.c,v $ 31 Revision 1.16 2006/08/14 23:05:53 cheshire 32 Added "tab-width" emacs header line 33 34 Revision 1.15 2005/01/27 22:57:56 cheshire 35 Fix compile errors on gcc4 36 37 Revision 1.14 2004/10/06 02:22:20 cheshire 38 Changed MacRoman copyright symbol (should have been UTF-8 in any case :-) to ASCII-compatible "(c)" 39 40 Revision 1.13 2004/10/01 22:15:55 rpantos 41 rdar://problem/3824265: Replace APSL in client lib with BSD license. 42 43 Revision 1.12 2004/09/16 23:14:24 cheshire 44 Changes for Windows compatibility 45 46 Revision 1.11 2004/06/18 04:56:09 rpantos 47 casting goodness 48 49 Revision 1.10 2004/06/12 01:08:14 cheshire 50 Changes for Windows compatibility 51 52 Revision 1.9 2004/05/18 23:51:27 cheshire 53 Tidy up all checkin comments to use consistent "<rdar://problem/xxxxxxx>" format for bug numbers 54 55 Revision 1.8 2003/11/05 22:44:57 ksekar 56 <rdar://problem/3335230>: No bounds checking when reading data from client 57 Reviewed by: Stuart Cheshire 58 59 Revision 1.7 2003/08/12 19:56:25 cheshire 60 Update to APSL 2.0 61 62 */ 63 64 #pragma ident "%Z%%M% %I% %E% SMI" 65 66 #include "dnssd_ipc.h" 67 68 void put_long(const uint32_t l, char **ptr) 69 { 70 (*ptr)[0] = (char)((l >> 24) & 0xFF); 71 (*ptr)[1] = (char)((l >> 16) & 0xFF); 72 (*ptr)[2] = (char)((l >> 8) & 0xFF); 73 (*ptr)[3] = (char)((l ) & 0xFF); 74 *ptr += sizeof(uint32_t); 75 } 76 77 uint32_t get_long(char **ptr) 78 { 79 uint8_t *p = (uint8_t*) *ptr; 80 *ptr += sizeof(uint32_t); 81 return((uint32_t) ((uint32_t)p[0] << 24 | (uint32_t)p[1] << 16 | (uint32_t)p[2] << 8 | p[3])); 82 } 83 84 void put_short(uint16_t s, char **ptr) 85 { 86 (*ptr)[0] = (char)((s >> 8) & 0xFF); 87 (*ptr)[1] = (char)((s ) & 0xFF); 88 *ptr += sizeof(uint16_t); 89 } 90 91 uint16_t get_short(char **ptr) 92 { 93 uint8_t *p = (uint8_t*) *ptr; 94 *ptr += sizeof(uint16_t); 95 return((uint16_t) ((uint16_t)p[0] << 8 | p[1])); 96 } 97 98 int put_string(const char *str, char **ptr) 99 { 100 if (!str) str = ""; 101 strcpy(*ptr, str); 102 *ptr += strlen(str) + 1; 103 return 0; 104 } 105 106 int get_string(char **ptr, char *buffer, int buflen) 107 { 108 int overrun = (int)strlen(*ptr) < buflen ? 0 : -1; 109 strncpy(buffer, *ptr, buflen - 1); 110 buffer[buflen - 1] = '\0'; 111 *ptr += strlen(buffer) + 1; 112 return overrun; 113 } 114 115 void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr) 116 { 117 memcpy(*ptr, rdata, rdlen); 118 *ptr += rdlen; 119 } 120 121 char *get_rdata(char **ptr, int rdlen) 122 { 123 char *rd = *ptr; 124 *ptr += rdlen; 125 return rd; 126 } 127 128 void ConvertHeaderBytes(ipc_msg_hdr *hdr) 129 { 130 hdr->version = htonl(hdr->version); 131 hdr->datalen = htonl(hdr->datalen); 132 hdr->flags = htonl(hdr->flags); 133 hdr->op = htonl(hdr->op ); 134 hdr->reg_index = htonl(hdr->reg_index); 135 } 136