Add lua bindings for base64.

diff --git a/src/lua/lua_util.c b/src/lua/lua_util.c
index f72e77d872fd1c5c68e87e9cef1ef609b7e427d9..20c14d24dbfe92b5aeba68cd0750fac41a1562f1 100644 (file)
--- a/src/lua/lua_util.c
+++ b/src/lua/lua_util.c
@@ -44,6 +44,14 @@ LUA_FUNCTION_DEF (util, load_rspamd_config);
  * @return {confg} new configuration object suitable for access
  */
 LUA_FUNCTION_DEF (util, config_from_ucl);
+/***
+ * @function util.encode_base64(input[, str_len])
+ * Encodes data in base64 breaking lines if needed
+ * @param {text or string} input input data
+ * @param {number} str_len optional size of lines or 0 if split is not needed
+ * @return {rspamd_text} encoded data chunk
+ */
+LUA_FUNCTION_DEF (util, encode_base64);
 LUA_FUNCTION_DEF (util, process_message);
 
 static const struct luaL_reg utillib_f[] = {
@@ -51,6 +59,7 @@ static const struct luaL_reg utillib_f[] = {
        LUA_INTERFACE_DEF (util, load_rspamd_config),
        LUA_INTERFACE_DEF (util, config_from_ucl),
        LUA_INTERFACE_DEF (util, process_message),
+       LUA_INTERFACE_DEF (util, encode_base64),
        {NULL, NULL}
 };
 
@@ -194,6 +203,53 @@ lua_util_process_message (lua_State *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;
+}
+
 static gint
 lua_load_util (lua_State * L)
 {