Add base32 decode/encode routines to lua util

diff --git a/src/lua/lua_util.c b/src/lua/lua_util.c
index cbd54e6cf2c977097ff71cb64617d9f749d6ed69..15bb90180ac7979ddf66a6ece4bcb95e1842541d 100644 (file)
--- a/src/lua/lua_util.c
+++ b/src/lua/lua_util.c
@@ -70,6 +70,22 @@ LUA_FUNCTION_DEF (util, encode_base64);
  * @return {rspamd_text} decoded data chunk
  */
 LUA_FUNCTION_DEF (util, decode_base64);
+
+/***
+ * @function util.encode_base32(input)
+ * Encodes data in base32 breaking lines if needed
+ * @param {text or string} input input data
+ * @return {rspamd_text} encoded data chunk
+ */
+LUA_FUNCTION_DEF (util, encode_base32);
+/***
+ * @function util.decode_base32(input)
+ * Decodes data from base32 ignoring whitespace characters
+ * @param {text or string} input data to decode
+ * @return {rspamd_text} decoded data chunk
+ */
+LUA_FUNCTION_DEF (util, decode_base32);
+
 /***
  * @function util.tokenize_text(input[, exceptions])
  * Create tokens from a text using optional exceptions list
@@ -183,6 +199,8 @@ static const struct luaL_reg utillib_f[] = {
        LUA_INTERFACE_DEF (util, process_message),
        LUA_INTERFACE_DEF (util, encode_base64),
        LUA_INTERFACE_DEF (util, decode_base64),
+       LUA_INTERFACE_DEF (util, encode_base32),
+       LUA_INTERFACE_DEF (util, decode_base32),
        LUA_INTERFACE_DEF (util, tokenize_text),
        LUA_INTERFACE_DEF (util, tanh),
        LUA_INTERFACE_DEF (util, parse_html),
@@ -441,6 +459,82 @@ lua_util_decode_base64 (lua_State *L)
        return 1;
 }
 
+static gint
+lua_util_encode_base32 (lua_State *L)
+{
+       struct rspamd_lua_text *t;
+       const gchar *s = NULL;
+       gchar *out;
+       gsize inlen, outlen;
+
+       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 (s == NULL) {
+               lua_pushnil (L);
+       }
+       else {
+               out = rspamd_encode_base32 (s, inlen);
+
+               if (out != NULL) {
+                       t = lua_newuserdata (L, sizeof (*t));
+                       outlen = strlen (out);
+                       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_util_decode_base32 (lua_State *L)
+{
+       struct rspamd_lua_text *t;
+       const gchar *s = NULL;
+       gsize inlen, outlen;
+
+       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 (s != NULL) {
+                       t = lua_newuserdata (L, sizeof (*t));
+                       rspamd_lua_setclass (L, "rspamd{text}", -1);
+                       t->start = rspamd_decode_base32 (s, inlen, &outlen);
+                       t->len = outlen;
+                       t->own = TRUE;
+       }
+       else {
+               lua_pushnil (L);
+       }
+
+       return 1;
+}
+
 static gint
 lua_util_tokenize_text (lua_State *L)
 {