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Add extract_metadata to main PDU classes

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This commit is contained in:
Matias Fontanini
2016-02-20 22:19:12 -08:00
parent dae25b3381
commit 17da10d76e
32 changed files with 318 additions and 12 deletions
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10
src/ip.cpp
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@@ -59,6 +59,16 @@ namespace Tins {
const uint8_t IP::DEFAULT_TTL = 128;
PDU::metadata IP::extract_metadata(const uint8_t *buffer, uint32_t total_sz) {
if (TINS_UNLIKELY(total_sz < sizeof(ip_header))) {
throw malformed_packet();
}
const ip_header* header = (const ip_header*)buffer;
PDUType next_type = Internals::ip_type_to_pdu_flag(
static_cast<Constants::IP::e>(header->protocol));
return metadata(header->ihl * 4, pdu_flag, next_type);
}
IP::IP(address_type ip_dst, address_type ip_src) {
init_ip_fields();
this->dst_addr(ip_dst);