Add C++ interface

Change-Id: I05e104e4733d071949723073d32b21c22089ecdf
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

2 files changed, 96 insertions, 4 deletions

diff --git a/bindings/tutorial/CMakeLists.txt b/bindings/tutorial/CMakeLists.txt
index 844e2dfb..62775f2c 100644
--- a/bindings/tutorial/CMakeLists.txt
+++ b/bindings/tutorial/CMakeLists.txt
@@ -19,8 +19,8 @@
 
 #INCLUDE_DIRECTORIES(${include_dirs})
 
-MACRO(tuto num)
-  ADD_LIBRARY(tuto-${num} MODULE tuto-${num}.c)
+MACRO(tuto num ext)
+  ADD_LIBRARY(tuto-${num} MODULE tuto-${num}.${ext})
   SET_TARGET_PROPERTIES(tuto-${num} PROPERTIES
 	PREFIX ""
 	LINK_FLAGS "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/export.map"
@@ -28,5 +28,7 @@ MACRO(tuto num)
   TARGET_LINK_LIBRARIES(tuto-${num} ${link_libraries})
 ENDMACRO(tuto)
 
-tuto(1)
-tuto(2)
+
+tuto(1 c)
+tuto(2 c)
+tuto(3 cpp)
diff --git a/bindings/tutorial/tuto-3.cpp b/bindings/tutorial/tuto-3.cpp
new file mode 100644
index 00000000..7400b986
--- /dev/null
+++ b/bindings/tutorial/tuto-3.cpp
@@ -0,0 +1,90 @@
+#include <string.h>
+#include <json-c/json.h>
+
+#include <afb/afb-binding>
+
+afb::event event_login, event_logout;
+
+void login(afb_req r)
+{
+	json_object *args, *user, *passwd;
+	char *usr;
+	afb::req req(r);
+
+	args = req.json();
+	if (!json_object_object_get_ex(args, "user", &user)
+	 || !json_object_object_get_ex(args, "password", &passwd)) {
+		AFB_REQ_ERROR(req, "login, bad request: %s", json_object_get_string(args));
+		req.fail("bad-request");
+	} else if (afb_req_context_get(req)) {
+		AFB_REQ_ERROR(req, "login, bad state, logout first");
+		req.fail("bad-state");
+	} else if (strcmp(json_object_get_string(passwd), "please")) {
+		AFB_REQ_ERROR(req, "login, unauthorized: %s", json_object_get_string(args));
+		req.fail("unauthorized");
+	} else {
+		usr = strdup(json_object_get_string(user));
+		AFB_REQ_NOTICE(req, "login user: %s", usr);
+		req.session_set_LOA(1);
+		req.context_set(usr, free);
+		req.success();
+		event_login.push(json_object_new_string(usr));
+	}
+}
+
+void action(afb_req r)
+{
+	json_object *args, *val;
+	char *usr;
+	afb::req req(r);
+
+	args = req.json();
+	usr = (char*)req.context_get();
+	AFB_REQ_NOTICE(req, "action for user %s: %s", usr, json_object_get_string(args));
+	if (json_object_object_get_ex(args, "subscribe", &val)) {
+		if (json_object_get_boolean(val)) {
+			AFB_REQ_NOTICE(req, "user %s subscribes to events", usr);
+			req.subscribe(event_login);
+			req.subscribe(event_logout);
+		} else {
+			AFB_REQ_NOTICE(req, "user %s unsubscribes to events", usr);
+			req.unsubscribe(event_login);
+			req.unsubscribe(event_logout);
+		}
+	}
+	req.success(json_object_get(args));
+}
+
+void logout(afb_req r)
+{
+	char *usr;
+	afb::req req(r);
+
+	usr = (char*)req.context_get();
+	AFB_REQ_NOTICE(req, "login user %s out", usr);
+	event_logout.push(json_object_new_string(usr));
+	req.session_set_LOA(0);
+	req.context_clear();
+	req.success();
+}
+
+int init()
+{
+	AFB_NOTICE("init");
+	event_login = afb_daemon_make_event("login");
+	event_logout = afb_daemon_make_event("logout");
+	if (afb_event_is_valid(event_login) && afb_event_is_valid(event_logout))
+		return 0;
+	AFB_ERROR("Can't create events");
+	return -1;
+}
+
+const afb_verb_v2 verbs[] = {
+	afb::verb("login", login, "log in the system"),
+	afb::verb("action", action, "perform an action", AFB_SESSION_LOA_1),
+	afb::verb("logout", logout, "log out the system", AFB_SESSION_LOA_1),
+	afb::verbend()
+};
+
+const afb_binding_v2 afbBindingV2 = afb::binding("tuto-3", verbs, "third tutorial: C++", init);
+