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Clean up immediately and avoid pcap garbage collection if opening fails

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This commit is contained in:
dmiller 2019-03-19 15:51:43 +00:00
parent fe9a1db4dd
commit 840af24083
1 changed files with 7 additions and 5 deletions
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12
nse_nsock.cc
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@ -1019,16 +1019,18 @@ static int l_pcap_open (lua_State *L)
lua_pop(L, 1); /* the nonexistant socket */
nsiod = (nsock_iod *) lua_newuserdata(L, sizeof(nsock_iod));
*nsiod = nsock_iod_new(nsp, nu);
rc = nsock_pcap_open(nsp, *nsiod, lua_tostring(L, 6), snaplen,
lua_toboolean(L, 4), bpf);
if (rc) {
nsock_iod_delete(*nsiod, NSOCK_PENDING_ERROR);
luaL_error(L, "can't open pcap reader on %s", device);
}
lua_pushvalue(L, PCAP_SOCKET);
lua_setmetatable(L, -2);
*nsiod = nsock_iod_new(nsp, nu);
lua_pushvalue(L, 7); /* the pcap socket key */
lua_pushvalue(L, -2); /* the pcap socket nsiod */
lua_rawset(L, KEY_PCAP); /* KEY_PCAP["dev|snap|promis|bpf"] = pcap_nsiod */
rc = nsock_pcap_open(nsp, *nsiod, lua_tostring(L, 6), snaplen,
lua_toboolean(L, 4), bpf);
if (rc)
luaL_error(L, "can't open pcap reader on %s", device);
}
lua_getuservalue(L, 1); /* the socket user value */
lua_pushvalue(L, -2); /* the pcap socket nsiod */