chore: Add cirrus-ci build.

This uses toktok-stack and runs pytox tests.

Author: iphydf

.cirrus.yml

@@ -0,0 +1,13 @@
+---
+cirrus-ci_task:
+  container:
+    image: toxchat/toktok-stack:0.0.18
+    cpu: 2
+    memory: 6G
+  configure_script:
+    - /src/workspace/tools/inject-repo py_toxcore_c
+  test_all_script:
+    - bazel test -k
+        --remote_http_cache=http://$CIRRUS_HTTP_CACHE_HOST
+        --config=release
+        //py_toxcore_c/...

.github/settings.yml

@@ -11,9 +11,6 @@ branches:
     protection:
       required_status_checks:
         contexts:
-          - Codacy/PR Quality Review
-          - CodeFactor
-          - Docker Build
-          - Travis CI - Pull Request
-          - code-review/reviewable
-          - coverage/coveralls
+          - "cirrus-ci"
+          - "Codacy Static Code Analysis"
+          - "code-review/reviewable"

pytox/core.c

@@ -53,7 +53,7 @@ static void callback_friend_request(Tox *tox, const uint8_t *public_key,
   bytes_to_hex_string(public_key, TOX_PUBLIC_KEY_SIZE, buf);
 
   PyObject_CallMethod((PyObject *)self, "on_friend_request", "ss#", buf, data,
-                      length - (data[length - 1] == 0));
+                      length - (length > 0 && data[length - 1] == 0));
 }
 
 static void callback_friend_message(Tox *tox, uint32_t friendnumber,
@@ -62,22 +62,23 @@ static void callback_friend_message(Tox *tox, uint32_t friendnumber,
                                     void *self) {
   PyObject_CallMethod((PyObject *)self, "on_friend_message", "iis#",
                       friendnumber, type, message,
-                      length - (message[length - 1] == 0));
+                      length - (length > 0 && message[length - 1] == 0));
 }
 
 static void callback_friend_name(Tox *tox, uint32_t friendnumber,
                                  const uint8_t *newname, size_t length,
                                  void *self) {
   PyObject_CallMethod((PyObject *)self, "on_friend_name", "is#", friendnumber,
-                      newname, length - (newname[length - 1] == 0));
+                      newname,
+                      length - (length > 0 && newname[length - 1] == 0));
 }
 
 static void callback_friend_status_message(Tox *tox, uint32_t friendnumber,
                                            const uint8_t *newstatus,
                                            size_t length, void *self) {
   PyObject_CallMethod((PyObject *)self, "on_friend_status_message", "is#",
                       friendnumber, newstatus,
-                      length - (newstatus[length - 1] == 0));
+                      length - (length > 0 && newstatus[length - 1] == 0));
 }
 
 static void callback_friend_status(Tox *tox, uint32_t friendnumber,
@@ -120,7 +121,7 @@ static void callback_conference_message(Tox *tox, uint32_t conference_number,
                                         void *self) {
   PyObject_CallMethod((PyObject *)self, "on_conference_message", "iiis#",
                       conference_number, peer_number, type, message,
-                      length - (message[length - 1] == 0));
+                      length - (length > 0 && message[length - 1] == 0));
 }
 
 static void callback_conference_peer_name(Tox *tox, uint32_t conference_number,