Update copyright dates
[src/app-framework-binder.git] / src / afb-ws-json1.c
index 5ef751f..88fd1c1 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 "IoT.bzh"
+ * Copyright (C) 2015-2020 "IoT.bzh"
  * Author: José Bollo <jose.bollo@iot.bzh>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
 #include "afb-wsj1.h"
 #include "afb-ws-json1.h"
 #include "afb-msg-json.h"
-#include "session.h"
-#include <afb/afb-req-itf.h>
-#include "afb-apis.h"
+#include "afb-session.h"
+#include "afb-cred.h"
+#include "afb-apiset.h"
+#include "afb-xreq.h"
 #include "afb-context.h"
 #include "afb-evt.h"
+#include "afb-token.h"
+
+#include "systemd.h"
 #include "verbose.h"
+#include "fdev.h"
 
-static void aws_on_hangup(struct afb_ws_json1 *ws, struct afb_wsj1 *wsj1);
-static void aws_on_call(struct afb_ws_json1 *ws, const char *api, const char *verb, struct afb_wsj1_msg *msg);
+/* predeclaration of structures */
+struct afb_ws_json1;
+struct afb_wsreq;
 
-static struct afb_wsj1_itf wsj1_itf = {
-       .on_hangup = (void*)aws_on_hangup,
-       .on_call = (void*)aws_on_call
-};
+/* predeclaration of websocket callbacks */
+static void aws_on_hangup_cb(void *closure, struct afb_wsj1 *wsj1);
+static void aws_on_call_cb(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg);
+static void aws_on_push_cb(void *closure, const char *event, uint16_t eventid, struct json_object *object);
+static void aws_on_broadcast_cb(void *closure, const char *event, struct json_object *object, const uuid_binary_t uuid, uint8_t hop);
 
-struct afb_wsreq;
+/* predeclaration of wsreq callbacks */
+static void wsreq_destroy(struct afb_xreq *xreq);
+static void wsreq_reply(struct afb_xreq *xreq, struct json_object *object, const char *error, const char *info);
+static int wsreq_subscribe(struct afb_xreq *xreq, struct afb_event_x2 *event);
+static int wsreq_unsubscribe(struct afb_xreq *xreq, struct afb_event_x2 *event);
 
+/* declaration of websocket structure */
 struct afb_ws_json1
 {
        int refcount;
        void (*cleanup)(void*);
        void *cleanup_closure;
-       struct AFB_clientCtx *session;
+       struct afb_session *session;
+       struct afb_token *token;
        struct afb_evt_listener *listener;
        struct afb_wsj1 *wsj1;
-       int new_session;
+       struct afb_cred *cred;
+       struct afb_apiset *apiset;
 };
 
-static void aws_send_event(struct afb_ws_json1 *ws, const char *event, struct json_object *object);
+/* declaration of wsreq structure */
+struct afb_wsreq
+{
+       struct afb_xreq xreq;
+       struct afb_ws_json1 *aws;
+       struct afb_wsreq *next;
+       struct afb_wsj1_msg *msgj1;
+};
 
-struct afb_ws_json1 *afb_ws_json1_create(int fd, struct afb_context *context, void (*cleanup)(void*), void *cleanup_closure)
+/* interface for afb_ws_json1 / afb_wsj1 */
+static struct afb_wsj1_itf wsj1_itf = {
+       .on_hangup = aws_on_hangup_cb,
+       .on_call = aws_on_call_cb
+};
+
+/* interface for xreq */
+const struct afb_xreq_query_itf afb_ws_json1_xreq_itf = {
+       .reply = wsreq_reply,
+       .subscribe = wsreq_subscribe,
+       .unsubscribe = wsreq_unsubscribe,
+       .unref = wsreq_destroy
+};
+
+/* the interface for events */
+static const struct afb_evt_itf evt_itf = {
+       .broadcast = aws_on_broadcast_cb,
+       .push = aws_on_push_cb
+};
+
+/***************************************************************
+****************************************************************
+**
+**  functions of afb_ws_json1 / afb_wsj1
+**
+****************************************************************
+***************************************************************/
+
+struct afb_ws_json1 *afb_ws_json1_create(struct fdev *fdev, struct afb_apiset *apiset, struct afb_context *context, void (*cleanup)(void*), void *cleanup_closure)
 {
        struct afb_ws_json1 *result;
 
-       assert(fd >= 0);
+       assert(fdev);
        assert(context != NULL);
 
        result = malloc(sizeof * result);
@@ -72,103 +121,89 @@ struct afb_ws_json1 *afb_ws_json1_create(int fd, struct afb_context *context, vo
        result->refcount = 1;
        result->cleanup = cleanup;
        result->cleanup_closure = cleanup_closure;
-       result->session = ctxClientAddRef(context->session);
-       result->new_session = context->created != 0;
+       result->session = afb_session_addref(context->session);
+       result->token = afb_token_addref(context->token);
        if (result->session == NULL)
                goto error2;
 
-       result->wsj1 = afb_wsj1_create(fd, &wsj1_itf, result);
+       result->wsj1 = afb_wsj1_create(fdev, &wsj1_itf, result);
        if (result->wsj1 == NULL)
                goto error3;
 
-       result->listener = afb_evt_listener_create((void*)aws_send_event, result);
+       result->listener = afb_evt_listener_create(&evt_itf, result);
        if (result->listener == NULL)
                goto error4;
 
+       result->cred = afb_cred_create_for_socket(fdev_fd(fdev));
+       result->apiset = afb_apiset_addref(apiset);
        return result;
 
 error4:
        afb_wsj1_unref(result->wsj1);
 error3:
-       ctxClientUnref(result->session);
+       afb_session_unref(result->session);
+       afb_token_unref(result->token);
 error2:
        free(result);
 error:
-       close(fd);
+       fdev_unref(fdev);
        return NULL;
 }
 
-static struct afb_ws_json1 *aws_addref(struct afb_ws_json1 *ws)
+struct afb_ws_json1 *afb_ws_json1_addref(struct afb_ws_json1 *ws)
 {
-       ws->refcount++;
+       __atomic_add_fetch(&ws->refcount, 1, __ATOMIC_RELAXED);
        return ws;
 }
 
-static void aws_unref(struct afb_ws_json1 *ws)
+void afb_ws_json1_unref(struct afb_ws_json1 *ws)
 {
-       if (--ws->refcount == 0) {
+       if (!__atomic_sub_fetch(&ws->refcount, 1, __ATOMIC_RELAXED)) {
                afb_evt_listener_unref(ws->listener);
                afb_wsj1_unref(ws->wsj1);
                if (ws->cleanup != NULL)
                        ws->cleanup(ws->cleanup_closure);
-               ctxClientUnref(ws->session);
+               afb_token_unref(ws->token);
+               afb_session_unref(ws->session);
+               afb_cred_unref(ws->cred);
+               afb_apiset_unref(ws->apiset);
                free(ws);
        }
 }
 
-static void aws_on_hangup(struct afb_ws_json1 *ws, struct afb_wsj1 *wsj1)
+static void aws_on_hangup_cb(void *closure, struct afb_wsj1 *wsj1)
 {
-       aws_unref(ws);
+       struct afb_ws_json1 *ws = closure;
+       afb_ws_json1_unref(ws);
 }
 
-struct afb_wsreq
+static int aws_new_token(struct afb_ws_json1 *ws, const char *new_token_string)
 {
-       /*
-        * CAUTION: 'context' field should be the first because there
-        * is an implicit convertion to struct afb_context
-        */
-       struct afb_context context;
-       int refcount;
-       struct afb_ws_json1 *aws;
-       struct afb_wsreq *next;
-       struct afb_wsj1_msg *msgj1;
-};
+       int rc;
+       struct afb_token *newtok, *oldtok;
 
-static void wsreq_addref(struct afb_wsreq *wsreq);
-static void wsreq_unref(struct afb_wsreq *wsreq);
-static struct json_object *wsreq_json(struct afb_wsreq *wsreq);
-static struct afb_arg wsreq_get(struct afb_wsreq *wsreq, const char *name);
-static void wsreq_fail(struct afb_wsreq *wsreq, const char *status, const char *info);
-static void wsreq_success(struct afb_wsreq *wsreq, struct json_object *obj, const char *info);
-static const char *wsreq_raw(struct afb_wsreq *wsreq, size_t *size);
-static void wsreq_send(struct afb_wsreq *wsreq, const char *buffer, size_t size);
-static int wsreq_subscribe(struct afb_wsreq *wsreq, struct afb_event event);
-static int wsreq_unsubscribe(struct afb_wsreq *wsreq, struct afb_event event);
-
-const struct afb_req_itf afb_ws_json1_req_itf = {
-       .json = (void*)wsreq_json,
-       .get = (void*)wsreq_get,
-       .success = (void*)wsreq_success,
-       .fail = (void*)wsreq_fail,
-       .raw = (void*)wsreq_raw,
-       .send = (void*)wsreq_send,
-       .context_get = (void*)afb_context_get,
-       .context_set = (void*)afb_context_set,
-       .addref = (void*)wsreq_addref,
-       .unref = (void*)wsreq_unref,
-       .session_close = (void*)afb_context_close,
-       .session_set_LOA = (void*)afb_context_change_loa,
-       .subscribe = (void*)wsreq_subscribe,
-       .unsubscribe = (void*)wsreq_unsubscribe
-};
+       rc = afb_token_get(&newtok, new_token_string);
+       if (rc >= 0) {
+               oldtok = ws->token;
+               ws->token = newtok;
+               afb_token_unref(oldtok);
+       }
+       return rc;
+}
 
-static void aws_on_call(struct afb_ws_json1 *ws, const char *api, const char *verb, struct afb_wsj1_msg *msg)
+static void aws_on_call_cb(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
 {
-       struct afb_req r;
+       struct afb_ws_json1 *ws = closure;
        struct afb_wsreq *wsreq;
+       const char *tok;
 
        DEBUG("received websocket request for %s/%s: %s", api, verb, afb_wsj1_msg_object_s(msg));
 
+       /* handle new tokens */
+       tok = afb_wsj1_msg_token(msg);
+       if (tok)
+               aws_new_token(ws, tok);
+
        /* allocate */
        wsreq = calloc(1, sizeof *wsreq);
        if (wsreq == NULL) {
@@ -177,108 +212,80 @@ static void aws_on_call(struct afb_ws_json1 *ws, const char *api, const char *ve
        }
 
        /* init the context */
-       afb_context_init(&wsreq->context, ws->session, afb_wsj1_msg_token(msg));
-       if (!wsreq->context.invalidated)
-               wsreq->context.validated = 1;
-       if (ws->new_session != 0) {
-               wsreq->context.created = 1;
-               ws->new_session = 0;
-       }
+       afb_xreq_init(&wsreq->xreq, &afb_ws_json1_xreq_itf);
+       afb_context_init(&wsreq->xreq.context, ws->session, ws->token, ws->cred);
 
        /* fill and record the request */
        afb_wsj1_msg_addref(msg);
        wsreq->msgj1 = msg;
-       wsreq->refcount = 1;
-       wsreq->aws = aws_addref(ws);
+       wsreq->xreq.request.called_api = api;
+       wsreq->xreq.request.called_verb = verb;
+       wsreq->xreq.json = afb_wsj1_msg_object_j(wsreq->msgj1);
+       wsreq->aws = afb_ws_json1_addref(ws);
 
        /* emits the call */
-       r.closure = wsreq;
-       r.itf = &afb_ws_json1_req_itf;
-       afb_apis_call_(r, &wsreq->context, api, verb);
-       wsreq_unref(wsreq);
+       afb_xreq_process(&wsreq->xreq, ws->apiset);
 }
 
-static void wsreq_addref(struct afb_wsreq *wsreq)
+static void aws_on_event(struct afb_ws_json1 *aws, const char *event, struct json_object *object)
 {
-       wsreq->refcount++;
+       afb_wsj1_send_event_j(aws->wsj1, event, afb_msg_json_event(event, object));
 }
 
-static void wsreq_unref(struct afb_wsreq *wsreq)
+static void aws_on_push_cb(void *closure, const char *event, uint16_t eventid, struct json_object *object)
 {
-       if (--wsreq->refcount == 0) {
-               afb_context_disconnect(&wsreq->context);
-               afb_wsj1_msg_unref(wsreq->msgj1);
-               aws_unref(wsreq->aws);
-               free(wsreq);
-       }
+       aws_on_event(closure, event, object);
 }
 
-static struct json_object *wsreq_json(struct afb_wsreq *wsreq)
+static void aws_on_broadcast_cb(void *closure, const char *event, struct json_object *object, const uuid_binary_t uuid, uint8_t hop)
 {
-       return afb_wsj1_msg_object_j(wsreq->msgj1);
+       aws_on_event(closure, event, afb_msg_json_event(event, object));
 }
 
-static struct afb_arg wsreq_get(struct afb_wsreq *wsreq, const char *name)
-{
-       struct afb_arg arg;
-       struct json_object *value, *root;
-
-       root = wsreq_json(wsreq);
-       if (json_object_object_get_ex(root, name, &value)) {
-               arg.name = name;
-               arg.value = json_object_get_string(value);
-       } else {
-               arg.name = NULL;
-               arg.value = NULL;
-       }
-       arg.path = NULL;
-       return arg;
-}
+/***************************************************************
+****************************************************************
+**
+**  functions of wsreq / afb_req
+**
+****************************************************************
+***************************************************************/
 
-static void wsreq_fail(struct afb_wsreq *wsreq, const char *status, const char *info)
+static void wsreq_destroy(struct afb_xreq *xreq)
 {
-       int rc;
-       rc = afb_wsj1_reply_error_j(wsreq->msgj1, afb_msg_json_reply_error(status, info, &wsreq->context, NULL), afb_context_sent_token(&wsreq->context));
-       if (rc)
-               ERROR("Can't send fail reply: %m");
+       struct afb_wsreq *wsreq = CONTAINER_OF_XREQ(struct afb_wsreq, xreq);
+
+       afb_context_disconnect(&wsreq->xreq.context);
+       afb_wsj1_msg_unref(wsreq->msgj1);
+       afb_ws_json1_unref(wsreq->aws);
+       free(wsreq);
 }
 
-static void wsreq_success(struct afb_wsreq *wsreq, json_object *obj, const char *info)
+static void wsreq_reply(struct afb_xreq *xreq, struct json_object *object, const char *error, const char *info)
 {
+       struct afb_wsreq *wsreq = CONTAINER_OF_XREQ(struct afb_wsreq, xreq);
        int rc;
-       rc = afb_wsj1_reply_ok_j(wsreq->msgj1, afb_msg_json_reply_ok(info, obj, &wsreq->context, NULL), afb_context_sent_token(&wsreq->context));
-       if (rc)
-               ERROR("Can't send success reply: %m");
-}
+       struct json_object *reply;
 
-static const char *wsreq_raw(struct afb_wsreq *wsreq, size_t *size)
-{
-       const char *result = afb_wsj1_msg_object_s(wsreq->msgj1);
-       if (size != NULL)
-               *size = strlen(result);
-       return result;
-}
+       /* create the reply */
+       reply = afb_msg_json_reply(object, error, info, &xreq->context);
 
-static void wsreq_send(struct afb_wsreq *wsreq, const char *buffer, size_t size)
-{
-       int rc;
-       rc = afb_wsj1_reply_ok_s(wsreq->msgj1, buffer, afb_context_sent_token(&wsreq->context));
+       rc = (error ? afb_wsj1_reply_error_j : afb_wsj1_reply_ok_j)(
+                       wsreq->msgj1, reply, NULL);
        if (rc)
-               ERROR("Can't send raw reply: %m");
+               ERROR("Can't send reply: %m");
 }
 
-static void aws_send_event(struct afb_ws_json1 *aws, const char *event, struct json_object *object)
+static int wsreq_subscribe(struct afb_xreq *xreq, struct afb_event_x2 *event)
 {
-       afb_wsj1_send_event_j(aws->wsj1, event, afb_msg_json_event(event, object));
-}
+       struct afb_wsreq *wsreq = CONTAINER_OF_XREQ(struct afb_wsreq, xreq);
 
-static int wsreq_subscribe(struct afb_wsreq *wsreq, struct afb_event event)
-{
-       return afb_evt_add_watch(wsreq->aws->listener, event);
+       return afb_evt_listener_watch_x2(wsreq->aws->listener, event);
 }
 
-static int wsreq_unsubscribe(struct afb_wsreq *wsreq, struct afb_event event)
+static int wsreq_unsubscribe(struct afb_xreq *xreq, struct afb_event_x2 *event)
 {
-       return afb_evt_remove_watch(wsreq->aws->listener, event);
+       struct afb_wsreq *wsreq = CONTAINER_OF_XREQ(struct afb_wsreq, xreq);
+
+       return afb_evt_listener_unwatch_x2(wsreq->aws->listener, event);
 }