mDNSShared/dnssd_ipc.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22
  23     Change History (most recent first):
  24
  25 $Log: dnssd_ipc.c,v $
  26 Revision 1.7  2003/08/12 19:56:25  cheshire
  27 Update to APSL 2.0
  28
  29  */
  30
  31 #include "dnssd_ipc.h"
  32
  33 void put_flags(const DNSServiceFlags flags, char **ptr)
  34     {
  35     memcpy(*ptr, &flags, sizeof(DNSServiceFlags));
  36     *ptr += sizeof(flags);
  37     }
  38
  39 DNSServiceFlags get_flags(char **ptr)
  40     {
  41     DNSServiceFlags flags;
  42
  43     flags = *(DNSServiceFlags *)*ptr;
  44     *ptr += sizeof(DNSServiceFlags);
  45     return flags;
  46     }
  47
  48 void put_long(const uint32_t l, char **ptr)
  49     {
  50
  51     *(uint32_t *)(*ptr) = l;
  52     *ptr += sizeof(uint32_t);
  53     }
  54
  55 uint32_t get_long(char **ptr)
  56     {
  57     uint32_t l;
  58
  59     l = *(uint32_t *)(*ptr);
  60     *ptr += sizeof(uint32_t);
  61     return l;
  62     }
  63
  64 void put_error_code(const DNSServiceErrorType error, char **ptr)
  65     {
  66     memcpy(*ptr, &error, sizeof(error));
  67     *ptr += sizeof(DNSServiceErrorType);
  68     }
  69
  70 DNSServiceErrorType get_error_code(char **ptr)
  71     {
  72     DNSServiceErrorType error;
  73
  74     error = *(DNSServiceErrorType *)(*ptr);
  75     *ptr += sizeof(DNSServiceErrorType);
  76     return error;
  77     }
  78
  79 void put_short(const uint16_t s, char **ptr)
  80     {
  81     *(uint16_t *)(*ptr) = s;
  82     *ptr += sizeof(uint16_t);
  83     }
  84
  85 uint16_t get_short(char **ptr)
  86     {
  87     uint16_t s;
  88
  89     s = *(uint16_t *)(*ptr);
  90     *ptr += sizeof(uint16_t);
  91     return s;
  92     }
  93
  94
  95 int put_string(const char *str, char **ptr)
  96     {
  97     if (!str) str = "";
  98     strcpy(*ptr, str);
  99     *ptr += strlen(str) + 1;
 100     return 0;
 101     }
 102
 103 // !!!KRS we don't properly handle the case where the string is longer than the buffer!!!
 104 int get_string(char **ptr, char *buffer, int buflen)
 105     {
 106     int overrun;
 107
 108     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 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;
 124
 125     rd = *ptr;
 126     *ptr += rdlen;
 127     return rd;
 128     }
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