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
put_long(const uint32_t l,char ** ptr)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
get_long(char ** ptr)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
put_short(uint16_t s,char ** ptr)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
get_short(char ** ptr)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
put_string(const char * str,char ** ptr)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
get_string(char ** ptr,char * buffer,int buflen)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
put_rdata(const int rdlen,const unsigned char * rdata,char ** ptr)115 void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr)
116 {
117 memcpy(*ptr, rdata, rdlen);
118 *ptr += rdlen;
119 }
120
get_rdata(char ** ptr,int rdlen)121 char *get_rdata(char **ptr, int rdlen)
122 {
123 char *rd = *ptr;
124 *ptr += rdlen;
125 return rd;
126 }
127
ConvertHeaderBytes(ipc_msg_hdr * hdr)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