#include "AFBClient.h"
+#include <cctype>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
+#include <unistd.h>
-#ifdef AFB
-/* the callback interface for wsj1 */
-static struct afb_wsj1_itf itf =
-{
- .on_hangup = AFBClient::onHangup,
- .on_call = AFBClient::onCall,
- .on_event = AFBClient::onEvent
-};
-#endif
+#define UNUSED(x) (void)(x)
-AFBClient::AFBClient()
-{
-}
+namespace {
-bool AFBClient::init()
-{
- /* get the default event loop */
- int rc = sd_event_default(&loop);
- if (rc < 0) {
- fprintf(stderr, "Connection to default event loop failed: %s\n", strerror(-rc));
- return false;
- }
+constexpr const int token_maxlen = 20;
+constexpr const char *const wmAPI = "winman";
-#ifdef AFB
- /* connect the websocket wsj1 to the uri given by the first argument */
- wsj1 = afb_ws_client_connect_wsj1(loop, wmURI, &itf, NULL);
- if (wsj1 == NULL) {
- fprintf(stderr, "Connection to %s failed: %m\n", wmURI);
- return false;
+#ifdef NDEBUG
+#define TRACE()
+#else
+#define TRACE() \
+ ScopeTrace __attribute__((unused)) trace_scope_here__(__PRETTY_FUNCTION__)
+
+struct ScopeTrace {
+ static int indent;
+ char const *f{};
+ ScopeTrace(char const *func) : f(func) {
+ fprintf(stderr, "%*s%s -->\n", 2 * indent++, "", this->f);
}
+ ~ScopeTrace() { fprintf(stderr, "%*s%s <--\n", 2 * --indent, "", this->f); }
+};
+int ScopeTrace::indent = 0;
#endif
- return true;
-}
-
-void AFBClient::requestSurface(const char *label)
-{
- const char functionParamName[] = "{\"drawing_name\":\"";
- char *parameter = (char *)malloc(strlen(functionParamName) + strlen(label) + 3);
- strcpy(parameter, functionParamName);
- strcat(parameter, label);
- strcat(parameter, "\"}");
- printf("requestSurface(%s): %s\n", label, parameter);
- call(wmAPI, "request_surface", parameter);
-}
-
-void AFBClient::activateSurface(const char *label)
-{
- const char functionParamName[] = "{\"drawing_name\":\"";
- char *parameter = (char *)malloc(strlen(functionParamName) + strlen(label) + 3);
- strcpy(parameter, functionParamName);
- strcat(parameter, label);
- strcat(parameter, "\"}");
- printf("activateSurface(%s): %s\n", label, parameter);
- call(wmAPI, "activate_surface", parameter);
-}
-
-void AFBClient::deactivateSurface(const char *label)
-{
-}
-
-void AFBClient::endDraw(const char *label)
-{
-}
-
/* called when wsj1 receives a method invocation */
-void AFBClient::onCall(void *closure, afb_wsj1 *wsj1)
+void onCall(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
{
-#ifdef AFB
+ TRACE();
+ UNUSED(closure);
int rc;
- printf("ON-CALL %s/%s:\n%s\n", wmAPI, verb,
+ printf("ON-CALL %s/%s:\n%s\n", api, verb,
json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
JSON_C_TO_STRING_PRETTY));
fflush(stdout);
- rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", NULL);
+ rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", nullptr);
if (rc < 0)
fprintf(stderr, "replying failed: %m\n");
-#endif
}
/* called when wsj1 receives an event */
-void AFBClient::onEvent(void *closure, const char *event, afb_wsj1_msg *msg)
+void onEvent(void *closure, const char *event, afb_wsj1_msg *msg)
{
-#ifdef AFB
+ TRACE();
+ UNUSED(closure);
printf("ON-EVENT %s:\n%s\n", event,
json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
JSON_C_TO_STRING_PRETTY));
fflush(stdout);
-#endif
}
/* called when wsj1 hangsup */
-void AFBClient::onHangup(void *closure, afb_wsj1 *wsj1)
+void onHangup(void *closure, afb_wsj1 *wsj1)
{
+ TRACE();
+ UNUSED(closure);
+ UNUSED(wsj1);
printf("ON-HANGUP\n");
fflush(stdout);
exit(0);
}
/* called when wsj1 receives a reply */
-void AFBClient::onReply(void *closure, afb_wsj1_msg *msg)
+void onReply(void *closure, afb_wsj1_msg *msg)
{
-#ifdef AFB
+ TRACE();
printf("ON-REPLY %s: %s\n%s\n", (char*)closure,
afb_wsj1_msg_is_reply_ok(msg) ? "OK" : "ERROR",
json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
JSON_C_TO_STRING_PRETTY));
fflush(stdout);
free(closure);
-#endif
+}
+
+} // namespace
+
+AFBClient &AFBClient::instance()
+{
+ TRACE();
+ static AFBClient obj;
+ return obj;
+}
+
+AFBClient::AFBClient() : wsj1{}, itf{}, loop{}
+{
+ TRACE();
+ ///* itinializing the callback interface for wsj1 */
+ itf.on_hangup = onHangup;
+ itf.on_call = onCall;
+ itf.on_event = onEvent;
+}
+
+AFBClient::~AFBClient()
+{
+ TRACE();
+ sd_event_unref(loop);
+ loop = nullptr;
+}
+
+int AFBClient::init(int port, char const *token)
+{
+ TRACE();
+ char *uribuf = nullptr;
+ int rc = -1;
+
+ if (!token || strlen(token) > token_maxlen) {
+ fprintf(stderr, "Token is invalid\n");
+ rc = -EINVAL;
+ goto fail;
+ }
+
+ for (char const *p = token; *p; p++) {
+ if (!isalnum(*p)) {
+ fprintf(stderr, "Token is invalid\n");
+ rc = -EINVAL;
+ goto fail;
+ }
+ }
+
+ if (port < 1 && port > 0xffff) {
+ fprintf(stderr, "Port is invalid\n");
+ rc = -EINVAL;
+ goto fail;
+ }
+
+ /* get the default event loop */
+ rc = sd_event_default(&loop);
+ if (rc < 0) {
+ fprintf(stderr, "Connection to default event loop failed: %s\n", strerror(-rc));
+ goto fail;
+ }
+
+ asprintf(&uribuf, "ws://localhost:%d/api?token=%s", port, token);
+
+ /* connect the websocket wsj1 to the uri given by the first argument */
+ wsj1 = afb_ws_client_connect_wsj1(loop, uribuf, &itf, nullptr);
+ if (wsj1 == nullptr) {
+ sd_event_unref(loop);
+ fprintf(stderr, "Connection to %s failed: %m\n", uribuf);
+ rc = -errno;
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ return rc;
+}
+
+int AFBClient::dispatch(uint64_t timeout) {
+ TRACE();
+ return sd_event_run(loop, timeout);
+}
+
+int AFBClient::requestSurface(const char *label)
+{
+ TRACE();
+ constexpr char const *verb = "request_surface";
+
+ json_object *jp = json_object_new_object();
+ json_object_object_add(jp, "drawing_name", json_object_new_string(label));
+
+ // std::experimental::optional look-alike
+ struct optional {
+ int value;
+ bool is_not_set;
+ };
+
+ constexpr struct optional const nullopt = {0, true};
+ auto id = nullopt;
+
+ /* send the request */
+ int rc = afb_wsj1_call_j(
+ wsj1, wmAPI, verb, jp,
+ [](void *closure, afb_wsj1_msg *msg) {
+ if (afb_wsj1_msg_is_reply_ok(msg)) {
+ int id = json_object_get_int(
+ json_object_object_get(afb_wsj1_msg_object_j(msg), "response"));
+ auto oid = (optional *)closure;
+ *oid = optional{id};
+ } else
+ fprintf(stderr, "wrong request surface reply received!\n");
+ },
+ (void *)&id);
+
+ if (rc < 0) {
+ fprintf(stderr, "calling %s/%s(%s) failed: %m\n", wmAPI, verb,
+ json_object_to_json_string(jp));
+ } else {
+ // Lets make this call sync here...
+ dispatch(-1);
+
+ if (! id.is_not_set) {
+ char *buf;
+ asprintf(&buf, "%d", id.value);
+ printf("setenv(\"QT_IVI_SURFACE_ID\", %s, 1)\n", buf);
+ if (setenv("QT_IVI_SURFACE_ID", buf, 1) != 0) {
+ fprintf(stderr, "putenv failed: %m\n");
+ } else {
+ rc = 0; // Single point of success
+ }
+ } else {
+ fprintf(stderr, "Could not get surface ID from WM\n");
+ rc = -EINVAL;
+ }
+ }
+
+ return rc;
+}
+
+int AFBClient::activateSurface(const char *label)
+{
+ TRACE();
+
+ const char begin[] = "{\"drawing_name\":\"";
+ const char end[] = "\"}";
+ const char verb[] = "activate_surface";
+ char *parameter = (char *)malloc(strlen(begin) +
+ strlen(label) +
+ strlen(end) + 1);
+ strcpy(parameter, begin);
+ strcat(parameter, label);
+ strcat(parameter, end);
+ call(wmAPI, verb, parameter);
+
+ // Sync this one too
+ dispatch(-1);
+
+ return 0;
+}
+
+int AFBClient::deactivateSurface(const char *label)
+{
+ TRACE();
+ json_object *j = json_object_new_object();
+ json_object_object_add(j, "drawing_name", json_object_new_string(label));
+ call(wmAPI, "deactivate_surface", json_object_to_json_string(j));
+ json_object_put(j);
+ dispatch(-1);
+ return 0;
+}
+
+int AFBClient::endDraw(const char *label)
+{
+ TRACE();
+ json_object *j = json_object_new_object();
+ json_object_object_add(j, "drawing_name", json_object_new_string(label));
+ call(wmAPI, "enddraw", json_object_to_json_string(j));
+ json_object_put(j);
+ dispatch(-1);
+ return 0;
}
/* makes a call */
void AFBClient::call(const char *api, const char *verb, const char *object)
{
-#ifdef AFB
+ TRACE();
static int num = 0;
char *key;
int rc;
+ fflush(stdout);
+
/* allocates an id for the request */
rc = asprintf(&key, "%d:%s/%s", ++num, api, verb);
/* send the request */
- rc = afb_wsj1_call_s(wsj1, api, verb, object, AFBClient::onReply, key);
+ rc = afb_wsj1_call_s(wsj1, api, verb, object, onReply, key);
if (rc < 0)
fprintf(stderr, "calling %s/%s(%s) failed: %m\n", api, verb, object);
-#endif
-}
-
-/* sends an event */
-void AFBClient::event(const char *event, const char *object)
-{
-#ifdef AFB
- int rc;
- rc = afb_wsj1_send_event_s(wsj1, event, object);
- if (rc < 0)
- fprintf(stderr, "sending !%s(%s) failed: %m\n", event, object);
-#endif
+ fflush(stdout);
}
-void AFBClient::emitSignalOrCall(const char *api, const char *verb, const char *object)
-{
- if (object == NULL || object[0] == 0)
- object = "null";
- if (api[0] == '!' && api[1] == 0)
- event(verb, object);
- else
- call(api, verb, object);
+void AFBClient::set_event_handler(enum EventType at, std::function<void(char const *)> func) {
+ TRACE();
+ // XXX todo
}