mDNSShared/dnssd_ipc.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24
  25     Change History (most recent first):
  26
  27 $Log: dnssd_ipc.c,v $
  28 Revision 1.9  2004/05/18 23:51:27  cheshire
  29 Tidy up all checkin comments to use consistent "<rdar://problem/xxxxxxx>" format for bug numbers
  30
  31 Revision 1.8  2003/11/05 22:44:57  ksekar
  32 <rdar://problem/3335230>: No bounds checking when reading data from client
  33 Reviewed by: Stuart Cheshire
  34
  35 Revision 1.7  2003/08/12 19:56:25  cheshire
  36 Update to APSL 2.0
  37
  38  */
  39
  40 #include "dnssd_ipc.h"
  41
  42 void put_flags(const DNSServiceFlags flags, char **ptr)
  43     {
  44     memcpy(*ptr, &flags, sizeof(DNSServiceFlags));
  45     *ptr += sizeof(flags);
  46     }
  47
  48 DNSServiceFlags get_flags(char **ptr)
  49     {
  50     DNSServiceFlags flags;
  51
  52     flags = *(DNSServiceFlags *)*ptr;
  53     *ptr += sizeof(DNSServiceFlags);
  54     return flags;
  55     }
  56
  57 void put_long(const uint32_t l, char **ptr)
  58     {
  59
  60     *(uint32_t *)(*ptr) = l;
  61     *ptr += sizeof(uint32_t);
  62     }
  63
  64 uint32_t get_long(char **ptr)
  65     {
  66     uint32_t l;
  67
  68     l = *(uint32_t *)(*ptr);
  69     *ptr += sizeof(uint32_t);
  70     return l;
  71     }
  72
  73 void put_error_code(const DNSServiceErrorType error, char **ptr)
  74     {
  75     memcpy(*ptr, &error, sizeof(error));
  76     *ptr += sizeof(DNSServiceErrorType);
  77     }
  78
  79 DNSServiceErrorType get_error_code(char **ptr)
  80     {
  81     DNSServiceErrorType error;
  82
  83     error = *(DNSServiceErrorType *)(*ptr);
  84     *ptr += sizeof(DNSServiceErrorType);
  85     return error;
  86     }
  87
  88 void put_short(const uint16_t s, char **ptr)
  89     {
  90     *(uint16_t *)(*ptr) = s;
  91     *ptr += sizeof(uint16_t);
  92     }
  93
  94 uint16_t get_short(char **ptr)
  95     {
  96     uint16_t s;
  97
  98     s = *(uint16_t *)(*ptr);
  99     *ptr += sizeof(uint16_t);
 100     return s;
 101     }
 102
 103
 104 int put_string(const char *str, char **ptr)
 105     {
 106     if (!str) str = "";
 107     strcpy(*ptr, str);
 108     *ptr += strlen(str) + 1;
 109     return 0;
 110     }
 111
 112 int get_string(char **ptr, char *buffer, int buflen)
 113     {
 114     int overrun;
 115
 116     overrun = (int)strlen(*ptr) <  buflen ? 0 : -1;
 117     strncpy(buffer, *ptr,  buflen - 1);
 118     buffer[buflen - 1] = '\0';
 119     *ptr += strlen(buffer) + 1;
 120     return overrun;
 121     }
 122
 123 void put_rdata(const int rdlen, const char *rdata, char **ptr)
 124     {
 125     memcpy(*ptr, rdata, rdlen);
 126     *ptr += rdlen;
 127     }
 128
 129 char *get_rdata(char **ptr, int rdlen)
 130     {
 131     char *rd;
 132
 133     rd = *ptr;
 134     *ptr += rdlen;
 135     return rd;
 136     }
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