Merge pull request #3563 from gamblor21/recv_into_size_check

Add socketpool.socket.recv_into size check

Author: tannewt

locale/circuitpython.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-10-15 16:06+0530\n"
+"POT-Creation-Date: 2020-10-16 13:56-0500\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <[email protected]>\n"
@@ -2107,6 +2107,10 @@ msgstr ""
 msgid "buffer too small"
 msgstr ""
 
+#: shared-bindings/socketpool/Socket.c
+msgid "buffer too small for requested bytes"
+msgstr ""
+
 #: shared-bindings/_pew/PewPew.c
 msgid "buttons must be digitalio.DigitalInOut"
 msgstr ""

shared-bindings/socketpool/Socket.c

@@ -257,6 +257,9 @@ STATIC mp_obj_t socketpool_socket_recv_into(size_t n_args, const mp_obj_t *args)
     mp_int_t len = bufinfo.len;
     if (n_args == 3) {
         mp_int_t given_len = mp_obj_get_int(args[2]);
+        if (given_len > len) {
+            mp_raise_ValueError(translate("buffer too small for requested bytes"));
+        }
         if (given_len > 0 && given_len < len) {
             len = given_len;
         }