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libnet: avoid type-punning compiler warning

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Origin commit data
------------------
Commit: a0c277eaac
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2013-03-24 (Sun, 24 Mar 2013)
This commit is contained in:
Stefan Seyfried
2013-03-24 17:02:44 +01:00
parent 72ba486773
commit d8e1cae899
1 changed files with 12 additions and 9 deletions
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21
lib/libnet/libnet.c
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@@ -157,23 +157,26 @@ void netGetDefaultRoute( char *ip )
{
FILE *fp;
char interface[9];
unsigned char destination[4];
unsigned char gateway[4];
uint32_t destination;
uint32_t gw;
uint8_t gateway[4];
char zeile[256];
*ip = 0 ;
fp = fopen("/proc/net/route","r");
if (fp == NULL)
return;
fgets(zeile,sizeof(zeile),fp);
fgets(zeile,sizeof(zeile),fp); /* skip header */
while(fgets(zeile,sizeof(zeile),fp))
{
sscanf(zeile,"%8s %x %x",interface,(unsigned *) destination,(unsigned *) gateway);
if (*(unsigned *)destination == 0)
{
sprintf(ip,"%d.%d.%d.%d",gateway[0],gateway[1],gateway[2],gateway[3]);
break;
}
destination = 1; /* in case sscanf fails */
sscanf(zeile,"%8s %x %x", interface, &destination, &gw);
if (destination)
continue;
/* big/little endian kernels have reversed entries, so this is correct */
memcpy(gateway, &gw, 4);
sprintf(ip, "%d.%d.%d.%d", gateway[0], gateway[1], gateway[2], gateway[3]);
break;
}
fclose(fp);
}