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require ${COREBASE}/meta/recipes-core/dbus/dbus_1.12.10.bb

FILESEXTRAPATHS_prepend := "${COREBASE}/meta/recipes-core/dbus/dbus:${THISDIR}/dbus-cynara:"
S = "${WORKDIR}/dbus-${PV}"

SRC_URI_append = "\
   file://0001-Integration-of-Cynara-asynchronous-security-checks.patch \
   file://0002-Disable-message-dispatching-when-send-rule-result-is.patch \
   file://0003-Handle-unavailability-of-policy-results-for-broadcas.patch \
   file://0004-Add-own-rule-result-unavailability-handling.patch \
   file://0005-Perform-Cynara-runtime-policy-checks-by-default.patch \
   file://0006-Fix-gcc-8-warnings.patch \
"

DEPENDS += "cynara smack"
RDEPENDS_${PN} += "dbus"

EXTRA_OECONF += "--enable-cynara --disable-selinux"

inherit distro_features_check
REQUIRED_DISTRO_FEATURES += "smack"

# Only the main package gets created here, everything else remains in the
# normal dbus recipe.
do_install_append () {
    for i in ${@' '.join([d.getVar('D', True) + x for x in (' '.join([d.getVar('FILES_${PN}-' + p, True) or '' for p in ['lib', 'dev', 'staticdev', 'doc', 'locale', 'ptest']])).split()])}; do
        rm -rf $i
    done

    # Try to remove empty directories, starting with the
    # longest path (= deepest directory) first.
    # Find needs a valid current directory. Somehow the directory
    # we get called in is gone by the time that we get invoked.
    ( cd ${D}
      for i in `find . -type d | sort -r`; do
        rmdir $i || true
      done
    )
}

# Avoid warning about dbus and dbus-cynara providing dbus-x11.
RPROVIDES_${PN}_remove = "${OLDPKGNAME}"
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background-color: #e3d2d2 } /* Error */ .highlight .k { color: #008800; font-weight: bold } /* Keyword */ .highlight .ch { color: #888888 } /* Comment.Hashbang */ .highlight .cm { color: #888888 } /* Comment.Multiline */ .highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */ .highlight .cpf { color: #888888 } /* Comment.PreprocFile */ .highlight .c1 { color: #888888 } /* Comment.Single */ .highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */ .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .gr { color: #aa0000 } /* Generic.Error */ .highlight .gh { color: #333333 } /* Generic.Heading */ .highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */ .highlight .go { color: #888888 } /* Generic.Output */ .highlight .gp { color: #555555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666666 } /* Generic.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; 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font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ }
/*
 * Copyright (C) 2015-2018 "IoT.bzh"
 * Author "Fulup Ar Foll"
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <pthread.h>

#include <json-c/json.h>

#define AFB_BINDING_VERSION 3
#include <afb/afb-binding.h>

static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

struct event
{
	struct event *next;
	afb_event_t event;
	char tag[1];
};

static struct event *events = 0;

/* searchs the event of tag */
static struct event *event_get(const char *tag)
{
	struct event *e = events;
	while(e && strcmp(e->tag, tag))
		e = e->next;
	return e;
}

/* deletes the event of tag */
static int event_del(const char *tag)
{
	struct event *e, **p;

	/* check exists */
	e = event_get(tag);
	if (!e) return -1;

	/* unlink */
	p = &events;
	while(*p != e) p = &(*p)->next;
	*p = e->next;

	/* destroys */
	afb_event_unref(e->event);
	free(e);
	return 0;
}

/* creates the event of tag */
static int event_add(const char *tag, const char *name)
{
	struct event *e;

	/* check valid tag */
	e = event_get(tag);
	if (e) return -1;

	/* creation */
	e = malloc(strlen(tag) + sizeof *e);
	if (!e) return -1;
	strcpy(e->tag, tag);

	/* make the event */
	e->event = afb_daemon_make_event(name);
	if (!e->event) { free(e); return -1; }

	/* link */
	e->next = events;
	events = e;
	return 0;
}

static int event_subscribe(afb_req_t request, const char *tag)
{
	struct event *e;
	e = event_get(tag);
	return e ? afb_req_subscribe(request, e->event) : -1;
}

static int event_unsubscribe(afb_req_t request, const char *tag)
{
	struct event *e;
	e = event_get(tag);
	return e ? afb_req_unsubscribe(request, e->event) : -1;
}

static int event_push(struct json_object *args, const char *tag)
{
	struct event *e;
	e = event_get(tag);
	return e ? afb_event_push(e->event, json_object_get(args)) : -1;
}

static int event_broadcast(struct json_object *args, const char *tag)
{
	struct event *e;
	e = event_get(tag);
	return e ? afb_event_broadcast(e->event, json_object_get(args)) : -1;
}

// Sample Generic Ping Debug API
static void ping(afb_req_t request, json_object *jresp, const char *tag)
{
	static int pingcount = 0;
	json_object *query = afb_req_json(request);
	afb_req_success_f(request, jresp, "Ping Binder Daemon tag=%s count=%d query=%s", tag, ++pingcount, json_object_to_json_string(query));
}

static void pingSample (afb_req_t request)
{
	ping(request, json_object_new_string ("Some String"), "pingSample");
}

static void pingFail (afb_req_t request)
{
	afb_req_fail(request, "failed", "Ping Binder Daemon fails");
}

static void pingNull (afb_req_t request)
{
	ping(request, NULL, "pingNull");
}

static void pingBug (afb_req_t request)
{
	ping(NULL, NULL, "pingBug");
}

static void pingEvent(afb_req_t request)
{
	json_object *query = afb_req_json(request);
	afb_daemon_broadcast_event("event", json_object_get(query));
	ping(request, json_object_get(query), "event");
}


// For samples https://linuxprograms.wordpress.com/2010/05/20/json-c-libjson-tutorial/
static void pingJson (afb_req_t request) {
    json_object *jresp, *embed;

    jresp = json_object_new_object();
    json_object_object_add(jresp, "myString", json_object_new_string ("Some String"));
    json_object_object_add(jresp, "myInt", json_object_new_int (1234));

    embed  = json_object_new_object();
    json_object_object_add(embed, "subObjString", json_object_new_string ("Some String"));
    json_object_object_add(embed, "subObjInt", json_object_new_int (5678));

    json_object_object_add(jresp,"eobj", embed);

    ping(request, jresp, "pingJson");
}

static void subcallcb (void *prequest, int status, json_object *object, afb_req_t request)
{
	if (status < 0)
		afb_req_fail(request, "failed", json_object_to_json_string(object));
	else
		afb_req_success(request, json_object_get(object), NULL);
}

static void subcall (afb_req_t request)
{
	const char *api = afb_req_value(request, "api");
	const char *verb = afb_req_value(request, "verb");
	const char *args = afb_req_value(request, "args");
	json_object *object = api && verb && args ? json_tokener_parse(args) : NULL;

	if (object == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else
		afb_req_subcall_legacy(request, api, verb, object, subcallcb, NULL);
}

static void subcallreqcb (void *prequest, int status, json_object *object, afb_req_t request)
{
	if (status < 0)
		afb_req_fail(request, "failed", json_object_to_json_string(object));
	else
		afb_req_success(request, json_object_get(object), NULL);
}

static void subcallreq (afb_req_t request)
{
	const char *api = afb_req_value(request, "api");
	const char *verb = afb_req_value(request, "verb");
	const char *args = afb_req_value(request, "args");
	json_object *object = api && verb && args ? json_tokener_parse(args) : NULL;

	if (object == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else
		afb_req_subcall_legacy(request, api, verb, object, subcallreqcb, NULL);
}

static void subcallsync (afb_req_t request)
{
	int rc;
	const char *api = afb_req_value(request, "api");
	const char *verb = afb_req_value(request, "verb");
	const char *args = afb_req_value(request, "args");
	json_object *result, *object = api && verb && args ? json_tokener_parse(args) : NULL;

	if (object == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else {
		rc = afb_req_subcall_sync_legacy(request, api, verb, object, &result);
		if (rc >= 0)
			afb_req_success(request, result, NULL);
		else {
			afb_req_fail(request, "failed", json_object_to_json_string(result));
			json_object_put(result);
		}
	}
}

static void eventadd (afb_req_t request)
{
	const char *tag = afb_req_value(request, "tag");
	const char *name = afb_req_value(request, "name");

	pthread_mutex_lock(&mutex);
	if (tag == NULL || name == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else if (0 != event_add(tag, name))
		afb_req_fail(request, "failed", "creation error");
	else
		afb_req_success(request, NULL, NULL);
	pthread_mutex_unlock(&mutex);
}

static void eventdel (afb_req_t request)
{
	const char *tag = afb_req_value(request, "tag");

	pthread_mutex_lock(&mutex);
	if (tag == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else if (0 != event_del(tag))
		afb_req_fail(request, "failed", "deletion error");
	else
		afb_req_success(request, NULL, NULL);
	pthread_mutex_unlock(&mutex);
}

static void eventsub (afb_req_t request)
{
	const char *tag = afb_req_value(request, "tag");

	pthread_mutex_lock(&mutex);
	if (tag == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else if (0 != event_subscribe(request, tag))
		afb_req_fail(request, "failed", "subscription error");
	else
		afb_req_success(request, NULL, NULL);
	pthread_mutex_unlock(&mutex);
}

static void eventunsub (afb_req_t request)
{
	const char *tag = afb_req_value(request, "tag");

	pthread_mutex_lock(&mutex);
	if (tag == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else if (0 != event_unsubscribe(request, tag))
		afb_req_fail(request, "failed", "unsubscription error");
	else
		afb_req_success(request, NULL, NULL);
	pthread_mutex_unlock(&mutex);
}

static void eventpush (afb_req_t request)
{
	const char *tag = afb_req_value(request, "tag");
	const char *data = afb_req_value(request, "data");
	json_object *object = data ? json_tokener_parse(data) : NULL;

	pthread_mutex_lock(&mutex);
	if (tag == NULL)
		afb_req_fail(request, "failed", "bad arguments");
	else if (0 > event_push(object, tag))
		afb_req_fail(request, "failed", "push error");
	else
		afb_req_success(request, NULL, NULL);
	pthread_mutex_unlock(&mutex);
	json_object_put(object);
}

static void callcb (void *prequest, json_object *object, const char *error, const char *info, afb_api_t api)
{
	afb_req_t request = prequest;
	afb_req_reply(request, json_object_get(object), error, info);
	afb_req_unref(request);
}

static void call (afb_req_t request)
{
	const char *api = afb_req_value(request, "api");
	const char *verb = afb_req_value(request, "verb");
	const char *args = afb_req_value(request, "args");
	json_object *object = api && verb && args ? json_tokener_parse(args) : NULL;

	afb_service_call(api, verb, object, callcb, afb_req_addref(request));
}

static void callsync (afb_req_t request)
{
	const char *api = afb_req_value(request, "api");
	const char *verb = afb_req_value(request, "verb");
	const char *args = afb_req_value(request, "args");
	json_object *object = api && verb && args ? json_tokener_parse(args) : NULL;
	json_object *result;
	char *error, *info;

	afb_service_call_sync(api, verb, object, &result, &error, &info);
	afb_req_reply(request, result, error, info);
	free(error);
	free(info);
}

static void verbose (afb_req_t request)
{
	int level = 5;
	json_object *query = afb_req_json(request), *l;

	if (json_object_is_type(query,json_type_int))
		level = json_object_get_int(query);
	else if (json_object_object_get_ex(query, "level", &l) && json_object_is_type(l, json_type_int))
		level = json_object_get_int(l);

	if (!json_object_object_get_ex(query,"message",&l))
		l = query;

	AFB_REQ_VERBOSE(request, level, "verbose called for %s", json_object_get_string(l));
	afb_req_success(request, NULL, NULL);
}

static void exitnow (afb_req_t request)
{
	int code = 0;
	json_object *query = afb_req_json(request), *l;

	if (json_object_is_type(query,json_type_int))
		code = json_object_get_int(query);
	else if (json_object_object_get_ex(query, "code", &l) && json_object_is_type(l, json_type_int))
		code = json_object_get_int(l);

	if (!json_object_object_get_ex(query,"reason",&l))
		l = NULL;

	AFB_REQ_NOTICE(request, "in phase of exiting with code %d, reason: %s", code, l ? json_object_get_string(l) : "unknown");
	afb_req_success(request, NULL, NULL);
	exit(code);
}

static void broadcast(afb_req_t request)
{
	const char *tag = afb_req_value(request, "tag");
	const char *name = afb_req_value(request, "name");
	const char *data = afb_req_value(request, "data");
	json_object *object = data ? json_tokener_parse(data) : NULL;

	if (tag != NULL) {
		pthread_mutex_lock(&mutex);
		if (0 > event_broadcast(object, tag))
			afb_req_fail(request, "failed", "broadcast error");
		else
			afb_req_success(request, NULL, NULL);
		pthread_mutex_unlock(&mutex);
	} else if (name != NULL) {
		if (0 > afb_daemon_broadcast_event(name, object))
			afb_req_fail(request, "failed", "broadcast error");
		else
			afb_req_success(request, NULL, NULL);
	} else {
		afb_req_fail(request, "failed", "bad arguments");
	}
	json_object_put(object);
}

static void hasperm (afb_req_t request)
{
	const char *perm = afb_req_value(request, "perm");
	if (afb_req_has_permission(request, perm))
		afb_req_success_f(request, NULL, "permission %s granted", perm?:"(null)");
	else
		afb_req_fail_f(request, "not-granted", "permission %s NOT granted", perm?:"(null)");
}

static void appid (afb_req_t request)
{
	char *aid = afb_req_get_application_id(request);
	afb_req_success_f(request, aid ? json_object_new_string(aid) : NULL, "application is %s", aid?:"?");
	free(aid);
}

static void uid (afb_req_t request)
{
	int uid = afb_req_get_uid(request);
	afb_req_success_f(request, json_object_new_int(uid), "uid is %d", uid);
}

static void closess (afb_req_t request)
{
	afb_req_session_close(request);
	afb_req_reply(request, NULL, NULL, "session closed");
}

static void setloa (afb_req_t request)
{
	int loa = json_object_get_int(afb_req_json(request));
	afb_req_session_set_LOA(request, loa);
	afb_req_reply_f(request, NULL, NULL, "LOA set to %d", loa);
}

static void setctx (afb_req_t request)
{
	struct json_object *x = afb_req_json(request);
	afb_req_context(request, (int)(intptr_t)afb_req_get_vcbdata(request), (void*)json_object_get, (void*)json_object_put, x);
	afb_req_reply(request, json_object_get(x), NULL, "context set");
}

static void getctx (afb_req_t request)
{
	struct json_object *x = afb_req_context(request, 0, 0, 0, 0);
	afb_req_reply(request, json_object_get(x), NULL, "returning the context");
}

static void info (afb_req_t request)
{
	afb_req_reply(request, afb_req_get_client_info(request), NULL, NULL);
}

static int preinit(afb_api_t api)
{
	AFB_NOTICE("hello binding comes to live");
	return 0;
}

static int init(afb_api_t api)
{
	AFB_NOTICE("hello binding starting");
	return 0;
}

static void onevent(afb_api_t api, const char *event, struct json_object *object)
{
	AFB_NOTICE("received event %s(%s)", event, json_object_to_json_string(object));
}

// NOTE: this sample does not use session to keep test a basic as possible
//       in real application most APIs should be protected with AFB_SESSION_CHECK
static const struct afb_verb_v3 verbs[]= {
  { .verb="ping",        .callback=pingSample },
  { .verb="pingfail",    .callback=pingFail },
  { .verb="pingnull",    .callback=pingNull },
  { .verb="pingbug",     .callback=pingBug },
  { .verb="pingJson",    .callback=pingJson },
  { .verb="pingevent",   .callback=pingEvent },
  { .verb="subcall",     .callback=subcall },
  { .verb="subcallreq",  .callback=subcallreq },
  { .verb="subcallsync", .callback=subcallsync },
  { .verb="eventadd",    .callback=eventadd },
  { .verb="eventdel",    .callback=eventdel },
  { .verb="eventsub",    .callback=eventsub },
  { .verb="eventunsub",  .callback=eventunsub },
  { .verb="eventpush",   .callback=eventpush },
  { .verb="call",        .callback=call },
  { .verb="callsync",    .callback=callsync },
  { .verb="verbose",     .callback=verbose },
  { .verb="broadcast",   .callback=broadcast },
  { .verb="hasperm",     .callback=hasperm },
  { .verb="appid",       .callback=appid },
  { .verb="uid",         .callback=uid },
  { .verb="exit",        .callback=exitnow },
  { .verb="close",       .callback=closess },
  { .verb="set-loa",     .callback=setloa },
  { .verb="setctx",      .callback=setctx, .vcbdata = (void*)(intptr_t)1 },
  { .verb="setctxif",    .callback=setctx, .vcbdata = (void*)(intptr_t)0 },
  { .verb="getctx",      .callback=getctx },
  { .verb="info",        .callback=info },
  { .verb=NULL}
};

#if !defined(APINAME)
#define APINAME "hello3"
#endif

const struct afb_binding_v3 afbBindingV3 = {
	.api = APINAME,
	.specification = NULL,
	.verbs = verbs,
	.preinit = preinit,
	.init = init,
	.onevent = onevent
};