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Code

Fixed 4-to-6 and 6-to-4 IP address translators

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This commit is contained in:
Michal Zima 2012-04-01 08:24:25 +02:00
parent 378f34ec64
commit aee57c680a
1 changed files with 15 additions and 3 deletions
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18
src/wrapper.c
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@ -175,13 +175,25 @@ int process(char *packet)
}
}
/**
* Translator of IPv6 address with embedded IPv4 address to that IPv4 address.
*
* @param ipv6_addr IPv6 address (as data source)
* @param ipv4_addr Where to put final IPv4 address
*/
void ipv6_to_ipv4(struct s_ipv6_addr *ipv6_addr, struct s_ipv4_addr *ipv4_addr)
{
memcpy(ipv4_addr, &ipv6_addr + 12, 4);
memcpy(ipv4_addr, ipv6_addr->addr + 12, 4);
}
/**
* Translator of IPv4 address to IPv6 address with WrapSix' prefix.
*
* @param ipv4_addr IPv4 address (as data source)
* @param ipv6_addr Where to put final IPv6 address
*/
void ipv4_to_ipv6(struct s_ipv4_addr *ipv4_addr, struct s_ipv6_addr *ipv6_addr)
{
*ipv6_addr = wrapsix_ipv6_prefix;
memcpy(ipv6_addr + 12, &ipv4_addr, 4);
memcpy(ipv6_addr, &wrapsix_ipv6_prefix, 12);
memcpy(ipv6_addr->addr + 12, ipv4_addr, 4);
}