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Added Sniffer class. Added a constructor to eery PDU subclass which creates an instance of the PDU from a byte array.

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This commit is contained in:
Matias Fontanini
2011-08-18 20:36:55 -03:00
parent d6ae9d498d
commit 18750fe18a
21 changed files with 492 additions and 103 deletions
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21
src/icmp.cpp
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@@ -19,12 +19,12 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdexcept>
#include <cstring>
#include <cassert>
#ifndef WIN32
#include <netinet/in.h>
#endif
#include <cstring>
#include <cassert>
#include "icmp.h"
#include "rawpdu.h"
#include "utils.h"
@@ -48,7 +48,16 @@ Tins::ICMP::ICMP(Flags flag) : PDU(IPPROTO_ICMP) {
};
}
Tins::ICMP::ICMP(icmphdr *ptr) : PDU(IPPROTO_ICMP) {
Tins::ICMP::ICMP(const uint8_t *buffer, uint32_t total_sz) : PDU(IPPROTO_ICMP) {
if(total_sz < sizeof(icmphdr))
throw std::runtime_error("Not enought size for an ICMP header in the buffer.");
std::memcpy(&_icmp, buffer, sizeof(icmphdr));
total_sz -= sizeof(icmphdr);
if(total_sz)
inner_pdu(new RawPDU(buffer + sizeof(icmphdr), total_sz));
}
Tins::ICMP::ICMP(const icmphdr *ptr) : PDU(IPPROTO_ICMP) {
std::memcpy(&_icmp, ptr, sizeof(icmphdr));
}
@@ -177,10 +186,10 @@ bool Tins::ICMP::matches_response(uint8_t *ptr, uint32_t total_sz) {
return false;
}
Tins::PDU *Tins::ICMP::clone_packet(uint8_t *ptr, uint32_t total_sz) {
Tins::PDU *Tins::ICMP::clone_packet(const uint8_t *ptr, uint32_t total_sz) {
if(total_sz < sizeof(icmphdr))
return 0;
icmphdr *icmp_ptr = (icmphdr*)ptr;
const icmphdr *icmp_ptr = (icmphdr*)ptr;
PDU *child = 0, *cloned;
if(total_sz > sizeof(icmphdr)) {
if((child = PDU::clone_inner_pdu(ptr + sizeof(icmphdr), total_sz - sizeof(icmphdr))) == 0)