/* -*- Mode: C; tab-width: 4 -*-
*
* Copyright (c) 2003-2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "dnssd_ipc.h"
#if defined(_WIN32)
char *win32_strerror(int inErrorCode)
{
static char buffer[1024];
DWORD n;
memset(buffer, 0, sizeof(buffer));
n = FormatMessageA(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
(DWORD) inErrorCode,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
buffer,
sizeof(buffer),
NULL);
if (n > 0)
{
// Remove any trailing CR's or LF's since some messages have them.
while ((n > 0) && isspace(((unsigned char *) buffer)[n - 1]))
buffer[--n] = '\0';
}
return buffer;
}
#endif
void put_uint32(const uint32_t l, char **ptr)
{
(*ptr)[0] = (char)((l >> 24) & 0xFF);
(*ptr)[1] = (char)((l >> 16) & 0xFF);
(*ptr)[2] = (char)((l >> 8) & 0xFF);
(*ptr)[3] = (char)((l ) & 0xFF);
*ptr += sizeof(uint32_t);
}
uint32_t get_uint32(const char **ptr, const char *end)
{
if (!*ptr || *ptr + sizeof(uint32_t) > end)
{
*ptr = NULL;
return(0);
}
else
{
uint8_t *p = (uint8_t*) *ptr;
*ptr += sizeof(uint32_t);
return((uint32_t) ((uint32_t)p[0] << 24 | (uint32_t)p[1] << 16 | (uint32_t)p[2] << 8 | p[3]));
}
}
void put_uint16(uint16_t s, char **ptr)
{
(*ptr)[0] = (char)((s >> 8) & 0xFF);
(*ptr)[1] = (char)((s ) & 0xFF);
*ptr += sizeof(uint16_t);
}
uint16_t get_uint16(const char **ptr, const char *end)
{
if (!*ptr || *ptr + sizeof(uint16_t) > end)
{
*ptr = NULL;
return(0);
}
else
{
uint8_t *p = (uint8_t*) *ptr;
*ptr += sizeof(uint16_t);
return((uint16_t) ((uint16_t)p[0] << 8 | p[1]));
}
}
int put_string(const char *str, char **ptr)
{
if (!str) str = "";
strcpy(*ptr, str);
*ptr += strlen(str) + 1;
return 0;
}
int get_string(const char **ptr, const char *const end, char *buffer, int buflen)
{
if (!*ptr)
{
*buffer = 0;
return(-1);
}
else
{
char *lim = buffer + buflen; // Calculate limit
while (*ptr < end && buffer < lim)
{
char c = *buffer++ = *(*ptr)++;
if (c == 0) return(0); // Success
}
if (buffer == lim) buffer--;
*buffer = 0; // Failed, so terminate string,
*ptr = NULL; // clear pointer,
return(-1); // and return failure indication
}
}
void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr)
{
memcpy(*ptr, rdata, rdlen);
*ptr += rdlen;
}
const char *get_rdata(const char **ptr, const char *end, int rdlen)
{
if (!*ptr || *ptr + rdlen > end)
{
*ptr = NULL;
return(0);
}
else
{
const char *rd = *ptr;
*ptr += rdlen;
return rd;
}
}
void ConvertHeaderBytes(ipc_msg_hdr *hdr)
{
hdr->version = htonl(hdr->version);
hdr->datalen = htonl(hdr->datalen);
hdr->ipc_flags = htonl(hdr->ipc_flags);
hdr->op = htonl(hdr->op );
hdr->reg_index = htonl(hdr->reg_index);
}
