CERBERUS/nmap
1
0
Fork 0
mirror of https://github.com/nmap/nmap.git synced 2026-08-31 23:40:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Script tracing for dnet raw sends

Browse source
This commit is contained in:
dmiller 2022-01-13 22:30:19 +00:00
parent e8df904e7e
commit 044295b0c8
1 changed files with 41 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

45
nse_dnet.cc
View file

@ -30,6 +30,7 @@ typedef struct nse_dnet_udata
{
eth_t *eth;
int sock; /* raw ip socket */
char devname[32]; /* libnetutil uses this len; dnet generally uses 16 */
} nse_dnet_udata;
static int l_dnet_new (lua_State *L)
@ -149,7 +150,10 @@ static eth_t *open_eth_cached (lua_State *L, int dnet_index, const char *device)
static int ethernet_open (lua_State *L)
{
nse_dnet_udata *udata = (nse_dnet_udata *) nseU_checkudata(L, 1, DNET_METATABLE, "dnet");
const char *interface_name = luaL_checkstring(L, 2);
size_t len = 0;
const char *interface_name = luaL_checklstring(L, 2, &len);
if (len >= 32)
return luaL_argerror(L, 2, "device name too long");
struct interface_info *ii = getInterfaceByName(interface_name, o.af());
if (ii == NULL || ii->device_type != devt_ethernet
@ -160,6 +164,13 @@ static int ethernet_open (lua_State *L)
return luaL_argerror(L, 2, "device is not valid ethernet interface");
udata->eth = open_eth_cached(L, 1, interface_name);
strncpy(udata->devname, interface_name, len);
udata->devname[len] = '\0';
if (o.scriptTrace())
{
log_write(LOG_STDOUT, "%s: Ethernet open %s\n",
SCRIPT_ENGINE, udata->devname);
}
return nseU_success(L);
}
@ -168,6 +179,12 @@ static int ethernet_close (lua_State *L)
{
nse_dnet_udata *udata = (nse_dnet_udata *) nseU_checkudata(L, 1, DNET_METATABLE, "dnet");
if (o.scriptTrace())
{
log_write(LOG_STDOUT, "%s: Ethernet close %s\n",
SCRIPT_ENGINE, udata->devname);
}
udata->devname[0] = '\0';
udata->eth = NULL;
lua_pushvalue(L, 1);
@ -182,7 +199,14 @@ static int ethernet_send (lua_State *L)
nse_dnet_udata *udata = (nse_dnet_udata *) nseU_checkudata(L, 1, DNET_METATABLE, "dnet");
if (udata->eth == NULL)
return luaL_error(L, "dnet ethernet interface is not open");
eth_send(udata->eth, luaL_checkstring(L, 2), lua_rawlen(L, 2));
size_t len = 0;
const char *frame = luaL_checklstring(L, 2, &len);
if (o.scriptTrace())
{
log_write(LOG_STDOUT, "%s: Ethernet frame (%lu bytes) > %s\n",
SCRIPT_ENGINE, len, udata->devname);
}
eth_send(udata->eth, frame, len);
return nseU_success(L);
}
@ -193,6 +217,10 @@ static int ip_open (lua_State *L)
if (udata->sock == -1)
return luaL_error(L, "failed to open raw socket: %s (errno %d)",
socket_strerror(socket_errno()), socket_errno());
if (o.scriptTrace())
{
log_write(LOG_STDOUT, "%s: raw IP socket open\n", SCRIPT_ENGINE);
}
return nseU_success(L);
}
@ -203,6 +231,10 @@ static int ip_close (lua_State *L)
return nseU_safeerror(L, "raw socket already closed");
close(udata->sock);
udata->sock = -1;
if (o.scriptTrace())
{
log_write(LOG_STDOUT, "%s: raw IP socket close\n", SCRIPT_ENGINE);
}
return nseU_success(L);
}
@ -300,18 +332,23 @@ static int ip_send (lua_State *L)
udata->eth = eth.ethsd = open_eth_cached(L, 1, route.ii.devname);
ret = send_ip_packet(udata->sock, &eth, &dst, (u8 *) packet, lua_rawlen(L, 2));
ret = send_ip_packet(udata->sock, &eth, &dst, (u8 *) packet, packetlen);
} else {
usesock:
#ifdef WIN32
if (strlen(dev) > 0)
win32_fatal_raw_sockets(dev);
#endif
ret = send_ip_packet(udata->sock, NULL, &dst, (u8 *) packet, lua_rawlen(L, 2));
ret = send_ip_packet(udata->sock, NULL, &dst, (u8 *) packet, packetlen);
}
if (ret == -1)
return nseU_safeerror(L, "error while sending: %s (errno %d)",
socket_strerror(socket_errno()), socket_errno());
if (o.scriptTrace())
{
log_write(LOG_STDOUT, "%s: RAW SEND %s\n",
SCRIPT_ENGINE, ippackethdrinfo((const u8 *)packet, packetlen, LOW_DETAIL));
}
return nseU_success(L);
}