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 $
31Revision 1.16  2006/08/14 23:05:53  cheshire
32Added "tab-width" emacs header line
33
34Revision 1.15  2005/01/27 22:57:56  cheshire
35Fix compile errors on gcc4
36
37Revision 1.14  2004/10/06 02:22:20  cheshire
38Changed MacRoman copyright symbol (should have been UTF-8 in any case :-) to ASCII-compatible "(c)"
39
40Revision 1.13  2004/10/01 22:15:55  rpantos
41rdar://problem/3824265: Replace APSL in client lib with BSD license.
42
43Revision 1.12  2004/09/16 23:14:24  cheshire
44Changes for Windows compatibility
45
46Revision 1.11  2004/06/18 04:56:09  rpantos
47casting goodness
48
49Revision 1.10  2004/06/12 01:08:14  cheshire
50Changes for Windows compatibility
51
52Revision 1.9  2004/05/18 23:51:27  cheshire
53Tidy up all checkin comments to use consistent "<rdar://problem/xxxxxxx>" format for bug numbers
54
55Revision 1.8  2003/11/05 22:44:57  ksekar
56<rdar://problem/3335230>: No bounds checking when reading data from client
57Reviewed by: Stuart Cheshire
58
59Revision 1.7  2003/08/12 19:56:25  cheshire
60Update to APSL 2.0
61
62 */
63
64#pragma ident	"%Z%%M%	%I%	%E% SMI"
65
66#include "dnssd_ipc.h"
67
68void 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
77uint32_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
84void 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
91uint16_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
98int 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
106int 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
115void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr)
116	{
117	memcpy(*ptr, rdata, rdlen);
118	*ptr += rdlen;
119	}
120
121char *get_rdata(char **ptr, int rdlen)
122	{
123	char *rd = *ptr;
124	*ptr += rdlen;
125	return rd;
126	}
127
128void 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