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Working ethernet II PDU. Fixed bugs in IP and added checksum calculation. Added layer2 sending to PacketSender

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This commit is contained in:
Santiago Alessandri
2011-08-15 18:16:48 -03:00
parent 5c412208f9
commit b76c9d0525
9 changed files with 192 additions and 136 deletions
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34
src/utils.cpp
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@@ -27,6 +27,7 @@
#ifndef WIN32
#include <netdb.h>
#include <linux/if_packet.h>
#include <net/if.h>
#endif
#include "utils.h"
@@ -36,7 +37,7 @@ using namespace std;
struct InterfaceCollector {
set<string> ifaces;
void operator() (struct ifaddrs *addr) {
ifaces.insert(addr->ifa_name);
}
@@ -46,9 +47,9 @@ struct IPv4Collector {
uint32_t ip;
bool found;
const char *iface;
IPv4Collector(const char *interface) : ip(0), found(false), iface(interface) { }
void operator() (struct ifaddrs *addr) {
if(!found && addr->ifa_addr->sa_family == AF_INET && !strcmp(addr->ifa_name, iface)) {
ip = ((struct sockaddr_in *)addr->ifa_addr)->sin_addr.s_addr;
@@ -57,28 +58,13 @@ struct IPv4Collector {
}
};
struct InterfaceIDCollector {
uint32_t id;
bool found;
const char *iface;
InterfaceIDCollector(const char *interface) : id(0), found(false), iface(interface) { }
void operator() (struct ifaddrs *addr) {
if(!found && !strcmp(addr->ifa_name, iface)) {
id = addr->ifa_flags;
found = true;
}
}
};
struct HWAddressCollector {
uint8_t *result;
bool found;
const char *iface;
HWAddressCollector(uint8_t *res, const char *interface) : result(res), found(false), iface(interface) { }
void operator() (struct ifaddrs *addr) {
if(!found && addr->ifa_addr->sa_family == AF_PACKET && !strcmp(addr->ifa_name, iface)) {
memcpy(result, ((struct sockaddr_ll*)addr->ifa_addr)->sll_addr, 6);
@@ -189,10 +175,10 @@ bool Tins::Utils::interface_hwaddr(const string &iface, uint8_t *buffer) {
}
bool Tins::Utils::interface_id(const string &iface, uint32_t &id) {
InterfaceIDCollector collector(iface.c_str());
generic_iface_loop(collector);
id = collector.id;
return collector.found;
id = if_nametoindex(iface.c_str());
return (((int32_t)id) != -1);
}
uint32_t Tins::Utils::crc32(uint8_t* data, uint32_t data_size) {