static gboolean
lua_tcp_arg_toiovec (lua_State *L, gint pos, rspamd_mempool_t *pool,
struct iovec *vec)
{
struct rspamd_lua_text *t;
gsize len;
const gchar *str;
if (lua_type (L, pos) == LUA_TUSERDATA) {
t = lua_check_text (L, pos);
if (t) {
vec->iov_base = (void *)t->start;
vec->iov_len = t->len;
}
else {
return FALSE;
}
}
else if (lua_type (L, pos) == LUA_TSTRING) {
str = luaL_checklstring (L, pos, &len);
vec->iov_base = rspamd_mempool_alloc (pool, len + 1);
rspamd_strlcpy (vec->iov_base, str, len + 1);
vec->iov_len = len;
}
else {
return FALSE;
}
return TRUE;
}
/***
* @function rspamd_cryptobox_hash.create([string])
* Creates new hash context
* @param {string} data optional string to hash
* @return {cryptobox_hash} hash object
*/
static gint
lua_cryptobox_hash_create (lua_State *L)
{
struct rspamd_lua_cryptobox_hash *h, **ph;
const gchar *s = NULL;
struct rspamd_lua_text *t;
gsize len = 0;
h = rspamd_lua_hash_create (NULL);
if (lua_type (L, 1) == LUA_TSTRING) {
s = lua_tolstring (L, 1, &len);
}
else if (lua_type (L, 1) == LUA_TUSERDATA) {
t = lua_check_text (L, 1);
if (!t) {
return luaL_error (L, "invalid arguments");
}
s = t->start;
len = t->len;
}
if (s) {
rspamd_lua_hash_update (h, s, len);
}
ph = lua_newuserdata (L, sizeof (void *));
*ph = h;
rspamd_lua_setclass (L, "rspamd{cryptobox_hash}", -1);
return 1;
}
/***
* @function rspamd_fann.load_data(data)
* Loads neural network from the data
* @param {string} file filename where fann is stored
* @return {fann} fann object
*/
static gint
lua_fann_load_data (lua_State *L)
{
#ifndef WITH_FANN
return 0;
#else
struct fann *f, **pfann;
gint fd;
struct rspamd_lua_text *t;
gchar fpath[PATH_MAX];
if (lua_type (L, 1) == LUA_TUSERDATA) {
t = lua_check_text (L, 1);
if (!t) {
return luaL_error (L, "text required");
}
}
else {
t = g_alloca (sizeof (*t));
t->start = lua_tolstring (L, 1, (gsize *)&t->len);
t->flags = 0;
}
/* We need to save data to file because of libfann stupidity */
rspamd_strlcpy (fpath, "/tmp/rspamd-fannXXXXXXXXXX", sizeof (fpath));
fd = mkstemp (fpath);
if (fd == -1) {
msg_warn ("cannot create tempfile: %s", strerror (errno));
lua_pushnil (L);
}
else {
if (write (fd, t->start, t->len) == -1) {
msg_warn ("cannot write tempfile: %s", strerror (errno));
lua_pushnil (L);
unlink (fpath);
close (fd);
return 1;
}
f = fann_create_from_file (fpath);
unlink (fpath);
close (fd);
if (f != NULL) {
pfann = lua_newuserdata (L, sizeof (gpointer));
*pfann = f;
rspamd_lua_setclass (L, "rspamd{fann}", -1);
}
else {
lua_pushnil (L);
}
}
return 1;
#endif
}
static gint
lua_util_decode_base64 (lua_State *L)
{
struct rspamd_lua_text *t;
const gchar *s = NULL;
gsize inlen, outlen;
gboolean zero_copy = FALSE, grab_own = FALSE;
gint state = 0;
guint save = 0;
if (lua_type (L, 1) == LUA_TSTRING) {
s = luaL_checklstring (L, 1, &inlen);
}
else if (lua_type (L, 1) == LUA_TUSERDATA) {
t = lua_check_text (L, 1);
if (t != NULL) {
s = t->start;
inlen = t->len;
zero_copy = TRUE;
if (t->own) {
t->own = FALSE;
grab_own = TRUE;
}
}
}
if (s != NULL) {
if (zero_copy) {
/* Decode in place */
outlen = g_base64_decode_step (s, inlen, (guchar *)s, &state, &save);
t = lua_newuserdata (L, sizeof (*t));
rspamd_lua_setclass (L, "rspamd{text}", -1);
t->start = s;
t->len = outlen;
t->own = grab_own;
}
else {
t = lua_newuserdata (L, sizeof (*t));
rspamd_lua_setclass (L, "rspamd{text}", -1);
t->len = (inlen / 4) * 3 + 3;
t->start = g_malloc (t->len);
outlen = g_base64_decode_step (s, inlen, (guchar *)t->start,
&state, &save);
t->len = outlen;
t->own = TRUE;
}
}
else {
lua_pushnil (L);
}
return 1;
}
static gint
lua_util_encode_base64 (lua_State *L)
{
struct rspamd_lua_text *t;
const gchar *s = NULL;
gchar *out;
gsize inlen, outlen;
guint str_lim = 0;
if (lua_type (L, 1) == LUA_TSTRING) {
s = luaL_checklstring (L, 1, &inlen);
}
else if (lua_type (L, 1) == LUA_TUSERDATA) {
t = lua_check_text (L, 1);
if (t != NULL) {
s = t->start;
inlen = t->len;
}
}
if (lua_gettop (L) > 1) {
str_lim = luaL_checknumber (L, 2);
}
if (s == NULL) {
lua_pushnil (L);
}
else {
out = rspamd_encode_base64 (s, inlen, str_lim, &outlen);
if (out != NULL) {
t = lua_newuserdata (L, sizeof (*t));
rspamd_lua_setclass (L, "rspamd{text}", -1);
t->start = out;
t->len = outlen;
/* Need destruction */
t->own = TRUE;
}
else {
lua_pushnil (L);
}
}
return 1;
}
/***
* @function rspamd_cryptobox.verify_memory(pk, sig, data)
* Check memory using specified cryptobox key and signature
* @param {pubkey} pk public key to verify
* @param {sig} signature to check
* @param {string} data data to check signature against
* @return {boolean} `true` - if string matches cryptobox signature
*/
static gint
lua_cryptobox_verify_memory (lua_State *L)
{
struct rspamd_cryptobox_pubkey *pk;
rspamd_fstring_t *signature;
struct rspamd_lua_text *t;
const gchar *data;
gsize len;
gint ret;
pk = lua_check_cryptobox_pubkey (L, 1);
signature = lua_check_cryptobox_sign (L, 2);
if (lua_isuserdata (L, 3)) {
t = lua_check_text (L, 3);
if (!t) {
return luaL_error (L, "invalid arguments");
}
data = t->start;
len = t->len;
}
else {
data = luaL_checklstring (L, 3, &len);
}
if (pk != NULL && signature != NULL && data != NULL) {
ret = rspamd_cryptobox_verify (signature->str, data, len,
rspamd_pubkey_get_pk (pk, NULL), RSPAMD_CRYPTOBOX_MODE_25519);
if (ret) {
lua_pushboolean (L, 1);
}
else {
lua_pushboolean (L, 0);
}
}
else {
return luaL_error (L, "invalid arguments");
}
return 1;
}
/***
* @function rspamd_cryptobox.sign_memory(kp, data)
* Sign data using specified keypair
* @param {keypair} kp keypair to sign
* @param {string} data
* @return {cryptobox_signature} signature object
*/
static gint
lua_cryptobox_sign_memory (lua_State *L)
{
struct rspamd_cryptobox_keypair *kp;
const gchar *data;
struct rspamd_lua_text *t;
gsize len = 0;
rspamd_fstring_t *sig, **psig;
kp = lua_check_cryptobox_keypair (L, 1);
if (lua_isuserdata (L, 2)) {
t = lua_check_text (L, 2);
if (!t) {
return luaL_error (L, "invalid arguments");
}
data = t->start;
len = t->len;
}
else {
data = luaL_checklstring (L, 2, &len);
}
if (!kp || !data) {
return luaL_error (L, "invalid arguments");
}
sig = rspamd_fstring_sized_new (rspamd_cryptobox_signature_bytes (
rspamd_keypair_alg (kp)));
rspamd_cryptobox_sign (sig->str, &sig->len, data,
len, rspamd_keypair_component (kp, RSPAMD_KEYPAIR_COMPONENT_SK,
NULL), rspamd_keypair_alg (kp));
psig = lua_newuserdata (L, sizeof (void *));
*psig = sig;
rspamd_lua_setclass (L, "rspamd{cryptobox_signature}", -1);
return 1;
}
/***
* @method cryptobox_hash:update(data)
* Updates hash with the specified data (hash should not be finalized using `hex` or `bin` methods)
* @param {string} data data to hash
*/
static gint
lua_cryptobox_hash_update (lua_State *L)
{
rspamd_cryptobox_hash_state_t *h = lua_check_cryptobox_hash (L, 1);
const gchar *data;
struct rspamd_lua_text *t;
gsize len;
if (lua_isuserdata (L, 2)) {
t = lua_check_text (L, 2);
if (!t) {
return luaL_error (L, "invalid arguments");
}
data = t->start;
len = t->len;
}
else {
data = luaL_checklstring (L, 2, &len);
}
if (lua_isnumber (L, 3)) {
gsize nlen = lua_tonumber (L, 3);
if (nlen > len) {
return luaL_error (L, "invalid length: %d while %d is available",
(int)nlen, (int)len);
}
len = nlen;
}
if (h && data) {
rspamd_cryptobox_hash_update (h, data, len);
}
else {
return luaL_error (L, "invalid arguments");
}
return 0;
}
/***
* @function rspamd_cryptobox_signature.create(data)
* Creates signature object from raw data
* @param {data} raw signature data
* @return {cryptobox_signature} signature object
*/
static gint
lua_cryptobox_signature_create (lua_State *L)
{
rspamd_fstring_t *sig, **psig;
struct rspamd_lua_text *t;
const gchar *data;
gsize dlen;
if (lua_isuserdata (L, 1)) {
t = lua_check_text (L, 1);
if (!t) {
return luaL_error (L, "invalid arguments");
}
data = t->start;
dlen = t->len;
}
else {
data = luaL_checklstring (L, 1, &dlen);
}
if (data != NULL) {
if (dlen == rspamd_cryptobox_signature_bytes (RSPAMD_CRYPTOBOX_MODE_25519)) {
sig = rspamd_fstring_new_init (data, dlen);
psig = lua_newuserdata (L, sizeof (rspamd_fstring_t *));
rspamd_lua_setclass (L, "rspamd{cryptobox_signature}", -1);
*psig = sig;
}
}
else {
return luaL_error (L, "bad input arguments");
}
return 1;
}
static gint
lua_util_tokenize_text (lua_State *L)
{
const gchar *in = NULL;
gsize len, pos, ex_len, i;
GList *exceptions = NULL, *cur;
struct rspamd_lua_text *t;
struct process_exception *ex;
GArray *res;
rspamd_fstring_t *w;
gboolean compat = FALSE;
if (lua_type (L, 1) == LUA_TSTRING) {
in = luaL_checklstring (L, 1, &len);
}
else if (lua_type (L, 1) == LUA_TTABLE) {
t = lua_check_text (L, 1);
if (t) {
in = t->start;
len = t->len;
}
}
if (in == NULL) {
lua_pushnil (L);
return 1;
}
if (lua_gettop (L) > 1 && lua_type (L, 2) == LUA_TTABLE) {
lua_pushvalue (L, 2);
lua_pushnil (L);
while (lua_next (L, -2) != 0) {
if (lua_type (L, -1) == LUA_TTABLE) {
lua_rawgeti (L, -1, 1);
pos = luaL_checknumber (L, -1);
lua_pop (L, 1);
lua_rawgeti (L, -1, 2);
ex_len = luaL_checknumber (L, -1);
lua_pop (L, 1);
if (ex_len > 0) {
ex = g_slice_alloc (sizeof (*ex));
ex->pos = pos;
ex->len = ex_len;
exceptions = g_list_prepend (exceptions, ex);
}
}
lua_pop (L, 1);
}
lua_pop (L, 1);
}
if (lua_gettop (L) > 2 && lua_type (L, 3) == LUA_TBOOLEAN) {
compat = lua_toboolean (L, 3);
}
if (exceptions) {
exceptions = g_list_reverse (exceptions);
}
res = rspamd_tokenize_text ((gchar *)in, len, TRUE, 0, exceptions, compat);
if (res == NULL) {
lua_pushnil (L);
}
else {
lua_newtable (L);
for (i = 0; i < res->len; i ++) {
w = &g_array_index (res, rspamd_fstring_t, i);
lua_pushlstring (L, w->begin, w->len);
lua_rawseti (L, -2, i + 1);
}
}
cur = exceptions;
while (cur) {
ex = cur->data;
g_slice_free1 (sizeof (*ex), ex);
cur = g_list_next (cur);
}
g_list_free (exceptions);
return 1;
}
