3rd-party/libtins
1
0
Fork 0
mirror of https://github.com/mfontanini/libtins synced 2026-01-28 04:34:27 +01:00
Code Issues Releases Wiki Activity

Fixed some bugs in ICMPv6.

Browse Source
This commit is contained in:
Matias Fontanini
2012-11-26 19:47:15 -03:00
parent 4576d8746c
commit e6e3e8453b
3 changed files with 24 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/icmpv6.cpp
View File

@@ -30,7 +30,10 @@
#include <cassert>
#include <cstring>
#include "icmpv6.h"
#include "ipv6.h"
#include "rawpdu.h"
#include "utils.h"
#include "constants.h"
namespace Tins {
@@ -159,7 +162,10 @@ void ICMPv6::write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *
#ifdef TINS_DEBUG
assert(total_sz >= header_size());
#endif
icmp6hdr* ptr_header = (icmp6hdr*)buffer;
std::memcpy(buffer, &_header, sizeof(_header));
buffer += sizeof(_header);
total_sz -= sizeof(_header);
for(options_type::const_iterator it = _options.begin(); it != _options.end(); ++it) {
#ifdef TINS_DEBUG
assert(total_sz >= it->data_size() + sizeof(uint8_t) * 2);
@@ -167,6 +173,20 @@ void ICMPv6::write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *
#endif
buffer = write_option(*it, buffer);
}
if(!_header.cksum) {
const Tins::IPv6 *ipv6 = dynamic_cast<const Tins::IPv6*>(parent);
if(ipv6) {
uint32_t checksum = Utils::pseudoheader_checksum(
ipv6->src_addr(),
ipv6->dst_addr(),
size(),
Constants::IP::PROTO_ICMPV6
) + Utils::do_checksum((uint8_t*)ptr_header, buffer);
while (checksum >> 16)
checksum = (checksum & 0xffff) + (checksum >> 16);
ptr_header->cksum = Endian::host_to_be<uint16_t>(~checksum);
}
}
}
// can i haz more?