Allow dynamic creation of APIs

Change-Id: I825bfa7969c98dd214457d9ff94e2948362286a9
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

16 files changed, 1375 insertions, 35 deletions

diff --git a/include/afb/afb-binding-vdyn.h b/include/afb/afb-binding-vdyn.h
new file mode 100644
index 00000000..6e7a0815
--- /dev/null
+++ b/include/afb/afb-binding-vdyn.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author: José Bollo <jose.bollo@iot.bzh>
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include "afb-auth.h"
+#include "afb-session-v2.h"
+#include "afb-verbosity.h"
+
+#include "afb-eventid.h"
+#include "afb-request.h"
+#include "afb-dynapi.h"
+
+/*
+ * Macros for logging messages
+ */
+#if defined(AFB_BINDING_PRAGMA_NO_VERBOSE_DATA)
+
+# define _AFB_DYNAPI_LOGGING_(vlevel,llevel,dynapi,...) \
+	do{ \
+		if(dynapi->verbosity>=vlevel) {\
+			if (llevel <= AFB_VERBOSITY_LEVEL_ERROR) \
+				afb_dynapi_verbose(dynapi,llevel,__FILE__,__LINE__,__func__,__VA_ARGS__); \
+			else \
+				afb_dynapi_verbose(dynapi,llevel,__FILE__,__LINE__,NULL,NULL); \
+		} \
+	}while(0)
+# define _AFB_REQUEST_LOGGING_(vlevel,llevel,request,...) \
+	do{ \
+		if(request->dynapi->verbosity>=vlevel) \
+			afb_request_verbose(request,llevel,__FILE__,__LINE__,NULL,NULL); \
+	}while(0)
+
+#elif defined(AFB_BINDING_PRAGMA_NO_VERBOSE_DETAILS)
+
+# define _AFB_DYNAPI_LOGGING_(vlevel,llevel,dynapi,...) \
+	do{ \
+		if(dynapi->verbosity>=vlevel) \
+			afb_dynapi_verbose(dynapi,llevel,NULL,0,NULL,__VA_ARGS__); \
+	}while(0)
+# define _AFB_REQUEST_LOGGING_(vlevel,llevel,request,...) \
+	do{ \
+		if(request->dynapi->verbosity>=vlevel) \
+			afb_request_verbose(request,llevel,NULL,0,NULL,__VA_ARGS__); \
+	}while(0)
+
+#else
+
+# define _AFB_DYNAPI_LOGGING_(vlevel,llevel,dynapi,...) \
+	do{ \
+		if(dynapi->verbosity>=vlevel) \
+			afb_dynapi_verbose(dynapi,llevel,__FILE__,__LINE__,__func__,__VA_ARGS__); \
+	}while(0)
+# define _AFB_REQUEST_LOGGING_(vlevel,llevel,request,...) \
+	do{ \
+		if(request->dynapi->verbosity>=vlevel) \
+			afb_request_verbose(request,llevel,__FILE__,__LINE__,__func__,__VA_ARGS__); \
+	}while(0)
+
+#endif
+
+#define AFB_DYNAPI_ERROR(...)     _AFB_DYNAPI_LOGGING_(AFB_VERBOSITY_LEVEL_ERROR,_AFB_SYSLOG_LEVEL_ERROR_,__VA_ARGS__)
+#define AFB_DYNAPI_WARNING(...)   _AFB_DYNAPI_LOGGING_(AFB_VERBOSITY_LEVEL_WARNING,_AFB_SYSLOG_LEVEL_WARNING_,__VA_ARGS__)
+#define AFB_DYNAPI_NOTICE(...)    _AFB_DYNAPI_LOGGING_(AFB_VERBOSITY_LEVEL_NOTICE,_AFB_SYSLOG_LEVEL_NOTICE_,__VA_ARGS__)
+#define AFB_DYNAPI_INFO(...)      _AFB_DYNAPI_LOGGING_(AFB_VERBOSITY_LEVEL_INFO,_AFB_SYSLOG_LEVEL_INFO_,__VA_ARGS__)
+#define AFB_DYNAPI_DEBUG(...)     _AFB_DYNAPI_LOGGING_(AFB_VERBOSITY_LEVEL_DEBUG,_AFB_SYSLOG_LEVEL_DEBUG_,__VA_ARGS__)
+#define AFB_REQUEST_ERROR(...)    _AFB_REQUEST_LOGGING_(AFB_VERBOSITY_LEVEL_ERROR,_AFB_SYSLOG_LEVEL_ERROR_,__VA_ARGS__)
+#define AFB_REQUEST_WARNING(...)  _AFB_REQUEST_LOGGING_(AFB_VERBOSITY_LEVEL_WARNING,_AFB_SYSLOG_LEVEL_WARNING_,__VA_ARGS__)
+#define AFB_REQUEST_NOTICE(...)   _AFB_REQUEST_LOGGING_(AFB_VERBOSITY_LEVEL_NOTICE,_AFB_SYSLOG_LEVEL_NOTICE_,__VA_ARGS__)
+#define AFB_REQUEST_INFO(...)     _AFB_REQUEST_LOGGING_(AFB_VERBOSITY_LEVEL_INFO,_AFB_SYSLOG_LEVEL_INFO_,__VA_ARGS__)
+#define AFB_REQUEST_DEBUG(...)    _AFB_REQUEST_LOGGING_(AFB_VERBOSITY_LEVEL_DEBUG,_AFB_SYSLOG_LEVEL_DEBUG_,__VA_ARGS__)
+
+
diff --git a/include/afb/afb-binding.h b/include/afb/afb-binding.h
index f8e38c49..f7047596 100644
--- a/include/afb/afb-binding.h
+++ b/include/afb/afb-binding.h
@@ -67,6 +67,7 @@
 
 #include "afb-binding-v1.h"
 #include "afb-binding-v2.h"
+#include "afb-binding-vdyn.h"
 
 typedef struct afb_verb_desc_v1         afb_verb_desc_v1;
 typedef struct afb_binding_desc_v1      afb_binding_desc_v1;
@@ -85,6 +86,10 @@ typedef struct afb_req                  afb_req;
 typedef struct afb_stored_req           afb_stored_req;
 typedef struct afb_service              afb_service;
 
+typedef struct afb_dynapi               afb_dynapi;
+typedef struct afb_request              afb_request;
+typedef struct afb_eventid              afb_eventid;
+
 #if 0
 /* these typedef's shouldn't be needed */
 typedef enum   afb_binding_type_v1      afb_binding_type_v1;
diff --git a/include/afb/afb-daemon-common.h b/include/afb/afb-daemon-common.h
index 5faf5758..b78f9af9 100644
--- a/include/afb/afb-daemon-common.h
+++ b/include/afb/afb-daemon-common.h
@@ -24,6 +24,7 @@ struct sd_event;
 struct sd_bus;
 struct afb_stored_req;
 struct afb_req;
+struct afb_dynapi;
 
 /*
  * Definition of the facilities provided by the daemon.
@@ -43,6 +44,7 @@ struct afb_daemon_itf
 	struct afb_req (*unstore_req)(void*closure, struct afb_stored_req *sreq);
 	int (*require_api)(void*closure, const char *name, int initialized);
 	int (*rename_api)(void*closure, const char *name);
+	int (*new_api)(void *closure, const char *api, const char *info, int (*preinit)(void*, struct afb_dynapi *), void *preinit_closure);
 };
 
 /*
diff --git a/include/afb/afb-daemon-v1.h b/include/afb/afb-daemon-v1.h
index 7fc2c235..9ac4f916 100644
--- a/include/afb/afb-daemon-v1.h
+++ b/include/afb/afb-daemon-v1.h
@@ -191,3 +191,12 @@ static inline int afb_daemon_rename_api_v1(struct afb_daemon daemon, const char
 	return daemon.itf->rename_api(daemon.closure, name);
 }
 
+static inline int afb_daemon_new_api_v1(
+	struct afb_daemon daemon,
+	const char *api,
+	const char *info,
+	int (*preinit)(void*, struct afb_dynapi *),
+	void *closure)
+{
+	return daemon.itf->new_api(daemon.closure, api, info, preinit, closure);
+}
diff --git a/include/afb/afb-daemon-v2.h b/include/afb/afb-daemon-v2.h
index 1451a097..186fc6d6 100644
--- a/include/afb/afb-daemon-v2.h
+++ b/include/afb/afb-daemon-v2.h
@@ -168,3 +168,12 @@ static inline int afb_daemon_rename_api_v2(const char *name)
 	return afb_get_daemon_v2().itf->rename_api(afb_get_daemon_v2().closure, name);
 }
 
+static inline int afb_daemon_new_api_v2(
+	const char *api,
+	const char *info,
+	int (*preinit)(void*, struct afb_dynapi *),
+	void *closure)
+{
+	return afb_get_daemon_v2().itf->new_api(afb_get_daemon_v2().closure, api, info, preinit, closure);
+}
+
diff --git a/include/afb/afb-dynapi-itf.h b/include/afb/afb-dynapi-itf.h
new file mode 100644
index 00000000..dd291ae8
--- /dev/null
+++ b/include/afb/afb-dynapi-itf.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author: José Bollo <jose.bollo@iot.bzh>
+ *
+ * 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.
+ */
+
+#pragma once
+
+/* declared here */
+struct afb_dynapi;
+struct afb_dynapi_itf;
+
+/* referenced here */
+#include <stdarg.h>
+struct sd_event;
+struct sd_bus;
+struct afb_request;
+struct afb_eventid;
+struct afb_auth;
+struct afb_verb_v2;
+
+/*
+ * structure for the dynapi
+ */
+struct afb_dynapi
+{
+	/* interface for the dynapi */
+	const struct afb_dynapi_itf *itf;
+
+	/* user defined data */
+	void *userdata;
+
+	/* current verbosity level */
+	int verbosity;
+};
+
+/*
+ * Definition of the interface for the API
+ */
+struct afb_dynapi_itf
+{
+	/* CAUTION: respect the order, add at the end */
+
+	void (*vverbose)(
+		void *dynapi,
+		int level,
+		const char *file,
+		int line,
+		const char * func,
+		const char *fmt,
+		va_list args);
+
+	/* gets the common systemd's event loop */
+	struct sd_event *(*get_event_loop)(
+		void *dynapi);
+
+	/* gets the common systemd's user d-bus */
+	struct sd_bus *(*get_user_bus)(
+		void *dynapi);
+
+	/* gets the common systemd's system d-bus */
+	struct sd_bus *(*get_system_bus)(
+		void *dynapi);
+
+	int (*rootdir_get_fd)(
+		void *dynapi);
+
+	int (*rootdir_open_locale)(
+		void *dynapi,
+		const char *filename,
+		int flags,
+		const char *locale);
+
+	int (*queue_job)(
+		void *dynapi,
+		void (*callback)(int signum, void *arg),
+		void *argument,
+		void *group,
+		int timeout);
+
+	int (*require_api)(
+		void *dynapi,
+		const char *name,
+		int initialized);
+
+	int (*rename_api)(
+		void *dynapi,
+		const char *name);
+
+	/* broadcasts event 'name' with 'object' */
+	int (*event_broadcast)(
+		void *dynapi,
+		const char *name,
+		struct json_object *object);
+
+	/* creates an event of 'name' */
+	struct afb_eventid *(*eventid_make)(
+		void *dynapi,
+		const char *name);
+
+	void (*call)(
+		struct afb_dynapi *dynapi,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		void (*callback)(void*, int, struct json_object*, struct afb_dynapi *),
+		void *callback_closure);
+
+	int (*call_sync)(
+		void *dynapi,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		struct json_object **result);
+
+	int (*api_new_api)(
+		void *dynapi,
+		const char *api,
+		const char *info,
+		int (*preinit)(void*, struct afb_dynapi *),
+		void *closure);
+
+	int (*api_set_verbs_v2)(
+		struct afb_dynapi *dynapi,
+		const struct afb_verb_v2 *verbs);
+
+	int (*api_add_verb)(
+		struct afb_dynapi *dynapi,
+		const char *verb,
+		const char *info,
+		void (*callback)(struct afb_request *request),
+		const struct afb_auth *auth,
+		uint32_t session);
+
+	int (*api_sub_verb)(
+		struct afb_dynapi *dynapi,
+		const char *verb);
+
+	int (*api_set_on_event)(
+		struct afb_dynapi *dynapi,
+		void (*onevent)(struct afb_dynapi *dynapi, const char *event, struct json_object *object));
+
+	int (*api_set_on_init)(
+		struct afb_dynapi *dynapi,
+		int (*oninit)(struct afb_dynapi *dynapi));
+
+	void (*api_seal)(
+		struct afb_dynapi *dynapi);
+};
+
diff --git a/include/afb/afb-dynapi.h b/include/afb/afb-dynapi.h
new file mode 100644
index 00000000..3d7c1469
--- /dev/null
+++ b/include/afb/afb-dynapi.h
@@ -0,0 +1,285 @@
+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author: José Bollo <jose.bollo@iot.bzh>
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include "afb-dynapi-itf.h"
+
+/*
+ * Send a message described by 'fmt' and following parameters
+ * to the journal for the verbosity 'level'.
+ *
+ * 'file', 'line' and 'func' are indicators of position of the code in source files
+ * (see macros __FILE__, __LINE__ and __func__).
+ *
+ *
+ * 'level' is defined by syslog standard:
+ *      EMERGENCY         0        System is unusable
+ *      ALERT             1        Action must be taken immediately
+ *      CRITICAL          2        Critical conditions
+ *      ERROR             3        Error conditions
+ *      WARNING           4        Warning conditions
+ *      NOTICE            5        Normal but significant condition
+ *      INFO              6        Informational
+ *      DEBUG             7        Debug-level messages
+ */
+static inline void afb_dynapi_verbose(struct afb_dynapi *dynapi, int level, const char *file, int line, const char *func, const char *fmt, ...) __attribute__((format(printf, 6, 7)));
+static inline void afb_dynapi_verbose(struct afb_dynapi *dynapi, int level, const char *file, int line, const char *func, const char *fmt, ...)
+{
+	va_list args;
+	va_start(args, fmt);
+	dynapi->itf->vverbose(dynapi, level, file, line, func, fmt, args);
+	va_end(args);
+}
+static inline void afb_dynapi_vverbose(struct afb_dynapi *dynapi, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
+{
+	dynapi->itf->vverbose(dynapi, level, file, line, func, fmt, args);
+}
+
+/*
+ * Retrieves the common systemd's event loop of AFB
+ */
+static inline struct sd_event *afb_dynapi_get_event_loop(struct afb_dynapi *dynapi)
+{
+	return dynapi->itf->get_event_loop(dynapi);
+}
+
+/*
+ * Retrieves the common systemd's user/session d-bus of AFB
+ */
+static inline struct sd_bus *afb_dynapi_get_user_bus(struct afb_dynapi *dynapi)
+{
+	return dynapi->itf->get_user_bus(dynapi);
+}
+
+/*
+ * Retrieves the common systemd's system d-bus of AFB
+ */
+static inline struct sd_bus *afb_dynapi_get_system_bus(struct afb_dynapi *dynapi)
+{
+	return dynapi->itf->get_system_bus(dynapi);
+}
+
+/*
+ * Get the root directory file descriptor. This file descriptor can
+ * be used with functions 'openat', 'fstatat', ...
+ */
+static inline int afb_dynapi_rootdir_get_fd(struct afb_dynapi *dynapi)
+{
+	return dynapi->itf->rootdir_get_fd(dynapi);
+}
+
+/*
+ * Opens 'filename' within the root directory with 'flags' (see function openat)
+ * using the 'locale' definition (example: "jp,en-US") that can be NULL.
+ * Returns the file descriptor or -1 in case of error.
+ */
+static inline int afb_dynapi_rootdir_open_locale(struct afb_dynapi *dynapi, const char *filename, int flags, const char *locale)
+{
+	return dynapi->itf->rootdir_open_locale(dynapi, filename, flags, locale);
+}
+
+/*
+ * Queue the job defined by 'callback' and 'argument' for being executed asynchronously
+ * in this thread (later) or in an other thread.
+ * If 'group' is not NUL, the jobs queued with a same value (as the pointer value 'group')
+ * are executed in sequence in the order of there submission.
+ * If 'timeout' is not 0, it represent the maximum execution time for the job in seconds.
+ * At first, the job is called with 0 as signum and the given argument.
+ * The job is executed with the monitoring of its time and some signals like SIGSEGV and
+ * SIGFPE. When a such signal is catched, the job is terminated and reexecuted but with
+ * signum being the signal number (SIGALRM when timeout expired).
+ *
+ * Returns 0 in case of success or -1 in case of error.
+ */
+static inline int afb_dynapi_queue_job(struct afb_dynapi *dynapi, void (*callback)(int signum, void *arg), void *argument, void *group, int timeout)
+{
+	return dynapi->itf->queue_job(dynapi, callback, argument, group, timeout);
+}
+
+/*
+ * Tells that it requires the API of "name" to exist
+ * and if 'initialized' is not null to be initialized.
+ * Calling this function is only allowed within init.
+ * Returns 0 in case of success or -1 in case of error.
+ */
+static inline int afb_dynapi_require_api(struct afb_dynapi *dynapi, const char *name, int initialized)
+{
+	return dynapi->itf->require_api(dynapi, name, initialized);
+}
+
+/*
+ * Set the name of the API to 'name'.
+ * Calling this function is only allowed within preinit.
+ * Returns 0 in case of success or -1 in case of error.
+ */
+static inline int afb_dynapi_rename_api(struct afb_dynapi *dynapi, const char *name)
+{
+	return dynapi->itf->rename_api(dynapi, name);
+}
+
+/*
+ * Broadcasts widely the event of 'name' with the data 'object'.
+ * 'object' can be NULL.
+ *
+ * For convenience, the function calls 'json_object_put' for 'object'.
+ * Thus, in the case where 'object' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * Calling this function is only forbidden during preinit.
+ *
+ * Returns the count of clients that received the event.
+ */
+static inline int afb_dynapi_broadcast_event(struct afb_dynapi *dynapi, const char *name, struct json_object *object)
+{
+	return dynapi->itf->event_broadcast(dynapi, name, object);
+}
+
+/*
+ * Creates an event of 'name' and returns it.
+ *
+ * Calling this function is only forbidden during preinit.
+ *
+ * See afb_event_is_valid to check if there is an error.
+ */
+static inline struct afb_eventid *afb_dynapi_make_eventid(struct afb_dynapi *dynapi, const char *name)
+{
+	return dynapi->itf->eventid_make(dynapi, name);
+}
+
+/**
+ * Calls the 'verb' of the 'api' with the arguments 'args' and 'verb' in the name of the binding.
+ * The result of the call is delivered to the 'callback' function with the 'callback_closure'.
+ *
+ * For convenience, the function calls 'json_object_put' for 'args'.
+ * Thus, in the case where 'args' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * The 'callback' receives 3 arguments:
+ *  1. 'closure' the user defined closure pointer 'callback_closure',
+ *  2. 'status' a status being 0 on success or negative when an error occured,
+ *  2. 'result' the resulting data as a JSON object.
+ *
+ * @param dynapi   The dynapi
+ * @param api      The api name of the method to call
+ * @param verb     The verb name of the method to call
+ * @param args     The arguments to pass to the method
+ * @param callback The to call on completion
+ * @param callback_closure The closure to pass to the callback
+ *
+ * @see also 'afb_req_subcall'
+ */
+static inline void afb_dynapi_call(
+	struct afb_dynapi *dynapi,
+	const char *api,
+	const char *verb,
+	struct json_object *args,
+	void (*callback)(void*closure, int status, struct json_object *result, struct afb_dynapi *dynapi),
+	void *callback_closure)
+{
+	dynapi->itf->call(dynapi, api, verb, args, callback, callback_closure);
+}
+
+/**
+ * Calls the 'verb' of the 'api' with the arguments 'args' and 'verb' in the name of the binding.
+ * 'result' will receive the response.
+ *
+ * For convenience, the function calls 'json_object_put' for 'args'.
+ * Thus, in the case where 'args' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * @param dynapi   The dynapi
+ * @param api      The api name of the method to call
+ * @param verb     The verb name of the method to call
+ * @param args     The arguments to pass to the method
+ * @param result   Where to store the result - should call json_object_put on it -
+ *
+ * @returns 0 in case of success or a negative value in case of error.
+ *
+ * @see also 'afb_req_subcall'
+ */
+static inline int afb_dynapi_call_sync(
+	struct afb_dynapi *dynapi,
+	const char *api,
+	const char *verb,
+	struct json_object *args,
+	struct json_object **result)
+{
+	return dynapi->itf->call_sync(dynapi, api, verb, args, result);
+}
+
+
+static inline int afb_dynapi_new_api(
+	struct afb_dynapi *dynapi,
+	const char *api,
+	const char *info,
+	int (*preinit)(void*, struct afb_dynapi *),
+	void *closure)
+{
+	return dynapi->itf->api_new_api(dynapi, api, info, preinit, closure);
+}
+
+static inline int afb_dynapi_set_verbs_v2(
+	struct afb_dynapi *dynapi,
+	const struct afb_verb_v2 *verbs)
+{
+	return dynapi->itf->api_set_verbs_v2(dynapi, verbs);
+}
+
+static inline int afb_dynapi_add_verb(
+	struct afb_dynapi *dynapi,
+	const char *verb,
+	const char *info,
+	void (*callback)(struct afb_request *request),
+	const struct afb_auth *auth,
+	uint32_t session)
+{
+	return dynapi->itf->api_add_verb(dynapi, verb, info, callback, auth, session);
+}
+
+
+static inline int afb_dynapi_sub_verb(
+		struct afb_dynapi *dynapi,
+		const char *verb)
+{
+	return dynapi->itf->api_sub_verb(dynapi, verb);
+}
+
+
+static inline int afb_dynapi_on_event(
+		struct afb_dynapi *dynapi,
+		void (*onevent)(struct afb_dynapi *dynapi, const char *event, struct json_object *object))
+{
+	return dynapi->itf->api_set_on_event(dynapi, onevent);
+}
+
+
+static inline int afb_dynapi_on_init(
+		struct afb_dynapi *dynapi,
+		int (*oninit)(struct afb_dynapi *dynapi))
+{
+	return dynapi->itf->api_set_on_init(dynapi, oninit);
+}
+
+
+static inline void afb_dynapi_seal(
+		struct afb_dynapi *dynapi)
+{
+	dynapi->itf->api_seal(dynapi);
+}
+
+
diff --git a/include/afb/afb-request-itf.h b/include/afb/afb-request-itf.h
index 9e55a361..b9e4366a 100644
--- a/include/afb/afb-request-itf.h
+++ b/include/afb/afb-request-itf.h
@@ -28,6 +28,7 @@ struct json_object;
 struct afb_req;
 struct afb_event;
 struct afb_eventid;
+struct afb_dynapi;
 struct afb_stored_req;
 
 /*
@@ -42,9 +43,16 @@ struct afb_arg
 				/* when the request is finalized this file is removed */
 };
 
+/*
+ * structure for the request
+ */
 struct afb_request
 {
+	/* interface for the request */
 	const struct afb_request_itf *itf;
+
+	/* current dynapi if dynapi (is NULL for bindings v1 and v2) */
+	struct afb_dynapi *dynapi;
 };
 
 /*
diff --git a/include/afb/afb-request.h b/include/afb/afb-request.h
index 26b2ef11..678922b3 100644
--- a/include/afb/afb-request.h
+++ b/include/afb/afb-request.h
@@ -19,8 +19,6 @@
 
 #include "afb-request-itf.h"
 
-typedef struct afb_request afb_request;
-
 /*
  * Gets from the request 'request' the argument of 'name'.
  * Returns a PLAIN structure of type 'struct afb_arg'.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 39b7fe1a..0e05f850 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -32,6 +32,7 @@ ADD_DEFINITIONS(-DINFER_EXTENSION)
 ADD_LIBRARY(afb-lib STATIC
 	afb-api.c
 	afb-api-dbus.c
+	afb-api-dyn.c
 	afb-api-so.c
 	afb-api-so-v1.c
 	afb-api-so-v2.c
diff --git a/src/afb-api-dyn.c b/src/afb-api-dyn.c
new file mode 100644
index 00000000..88022109
--- /dev/null
+++ b/src/afb-api-dyn.c
@@ -0,0 +1,279 @@
+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author José Bollo <jose.bollo@iot.bzh>
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include <json-c/json.h>
+
+#define AFB_BINDING_VERSION 0
+#include <afb/afb-binding.h>
+
+#include "afb-api.h"
+#include "afb-api-dyn.h"
+#include "afb-apiset.h"
+#include "afb-auth.h"
+#include "afb-export.h"
+#include "afb-xreq.h"
+#include "verbose.h"
+
+/*
+ * Description of a binding
+ */
+struct afb_api_dyn {
+	int count;
+	struct afb_api_dyn_verb **verbs;
+	const struct afb_verb_v2 *verbsv2;
+	struct afb_export *export;
+	char info[1];
+};
+
+void afb_api_dyn_set_verbs_v2(
+		struct afb_api_dyn *dynapi,
+		const struct afb_verb_v2 *verbs)
+{
+	dynapi->verbsv2 = verbs;
+}
+
+int afb_api_dyn_add_verb(
+		struct afb_api_dyn *dynapi,
+		const char *verb,
+		const char *info,
+		void (*callback)(struct afb_request *request),
+		const struct afb_auth *auth,
+		uint32_t session)
+{
+	struct afb_api_dyn_verb *v, **vv;
+
+	vv = realloc(dynapi->verbs, (1 + dynapi->count) * sizeof *vv);
+	if (!vv)
+		goto oom;
+	dynapi->verbs = vv;
+
+	v = malloc(sizeof *v + strlen(verb) + (info ? 1 + strlen(info) : 0));
+	if (!v)
+		goto oom;
+
+	v->callback = callback;
+	v->auth = auth;
+	v->session = session;
+
+	v->info = 1 + stpcpy(v->verb, verb);
+	if (info)
+		strcpy((char*)v->info, info);
+	else
+		v->info = NULL;
+
+	dynapi->verbs[dynapi->count++] = v;
+	return 0;
+oom:
+	errno = ENOMEM;
+	return -1;
+}
+
+int afb_api_dyn_sub_verb(
+		struct afb_api_dyn *dynapi,
+		const char *verb)
+{
+	struct afb_api_dyn_verb *v;
+	int i;
+
+	/* look first in dyna mic verbs */
+	for (i = 0 ; i < dynapi->count ; i++) {
+		v = dynapi->verbs[i];
+		if (!strcasecmp(v->verb, verb)) {
+			if (i != --dynapi->count)
+				dynapi->verbs[i] = dynapi->verbs[dynapi->count];
+			free(v);
+			return 0;
+		}
+	}
+
+	errno = ENOENT;
+	return -1;
+}
+
+static void call_cb(void *closure, struct afb_xreq *xreq)
+{
+	struct afb_api_dyn *dynapi = closure;
+	struct afb_api_dyn_verb **verbs;
+	const struct afb_verb_v2 *verbsv2;
+	int i;
+	const char *name;
+
+	name = xreq->verb;
+	xreq->request.dynapi = (void*)dynapi->export; /* hack: this avoids to export afb_export structure */
+
+	/* look first in dyna mic verbs */
+	verbs = dynapi->verbs;
+	i = dynapi->count;
+	while (i) {
+		if (!strcasecmp(verbs[--i]->verb, name)) {
+			afb_xreq_call_verb_vdyn(xreq, verbs[i]);
+			return;
+		}
+	}
+
+	verbsv2 = dynapi->verbsv2;
+	if (verbsv2) {
+		while (verbsv2->verb) {
+			if (strcasecmp(verbsv2->verb, name))
+				verbsv2++;
+			else {
+				afb_xreq_call_verb_v2(xreq, verbsv2);
+				return;
+			}
+		}
+	}
+
+	afb_xreq_fail_unknown_verb(xreq);
+}
+
+static int service_start_cb(void *closure, int share_session, int onneed, struct afb_apiset *apiset)
+{
+	struct afb_api_dyn *dynapi = closure;
+	return afb_export_start(dynapi->export, share_session, onneed, apiset);
+}
+
+static void update_hooks_cb(void *closure)
+{
+	struct afb_api_dyn *dynapi = closure;
+	afb_export_update_hook(dynapi->export);
+}
+
+static int get_verbosity_cb(void *closure)
+{
+	struct afb_api_dyn *dynapi = closure;
+	return afb_export_verbosity_get(dynapi->export);
+}
+
+static void set_verbosity_cb(void *closure, int level)
+{
+	struct afb_api_dyn *dynapi = closure;
+	afb_export_verbosity_set(dynapi->export, level);
+}
+
+static struct json_object *make_description_openAPIv3(struct afb_api_dyn *dynapi)
+{
+	char buffer[256];
+	struct afb_api_dyn_verb **iter, **end, *verb;
+	struct json_object *r, *f, *a, *i, *p, *g;
+
+	r = json_object_new_object();
+	json_object_object_add(r, "openapi", json_object_new_string("3.0.0"));
+
+	i = json_object_new_object();
+	json_object_object_add(r, "info", i);
+	json_object_object_add(i, "title", json_object_new_string(afb_export_apiname(dynapi->export)));
+	json_object_object_add(i, "version", json_object_new_string("0.0.0"));
+	json_object_object_add(i, "description", json_object_new_string(dynapi->info));
+
+	p = json_object_new_object();
+	json_object_object_add(r, "paths", p);
+	iter = dynapi->verbs;
+	end = iter + dynapi->count;
+	while (iter != end) {
+		verb = *iter++;
+		buffer[0] = '/';
+		strncpy(buffer + 1, verb->verb, sizeof buffer - 1);
+		buffer[sizeof buffer - 1] = 0;
+		f = json_object_new_object();
+		json_object_object_add(p, buffer, f);
+		g = json_object_new_object();
+		json_object_object_add(f, "get", g);
+
+		a = afb_auth_json_v2(verb->auth, verb->session);
+		if (a)
+			json_object_object_add(g, "x-permissions", a);
+
+		a = json_object_new_object();
+		json_object_object_add(g, "responses", a);
+		f = json_object_new_object();
+		json_object_object_add(a, "200", f);
+		json_object_object_add(f, "description", json_object_new_string(verb->info?:verb->verb));
+	}
+	return r;
+}
+
+static struct json_object *describe_cb(void *closure)
+{
+	struct afb_api_dyn *dynapi = closure;
+	struct json_object *r = make_description_openAPIv3(dynapi);
+	return r;
+}
+
+static struct afb_api_itf dyn_api_itf = {
+	.call = call_cb,
+	.service_start = service_start_cb,
+	.update_hooks = update_hooks_cb,
+	.get_verbosity = get_verbosity_cb,
+	.set_verbosity = set_verbosity_cb,
+	.describe = describe_cb
+};
+
+int afb_api_dyn_add(struct afb_apiset *apiset, const char *name, const char *info, int (*preinit)(void*, struct afb_dynapi*), void *closure)
+{
+	int rc;
+	struct afb_api_dyn *dynapi;
+	struct afb_api afb_api;
+	struct afb_export *export;
+
+	INFO("Starting creation of dynamic API %s", name);
+
+	/* allocates the description */
+	info = info ?: "";
+	dynapi = calloc(1, sizeof *dynapi + strlen(info));
+	export = afb_export_create_vdyn(apiset, name, dynapi);
+	if (!dynapi || !export) {
+		ERROR("out of memory");
+		goto error;
+	}
+	strcpy(dynapi->info, info);
+	dynapi->export = export;
+
+	/* preinit the api */
+	rc = afb_export_preinit_vdyn(export, preinit, closure);
+	if (rc < 0) {
+		ERROR("dynamic api %s preinit function failed, ABORTING it!",
+				afb_export_apiname(dynapi->export));
+		goto error;
+	}
+
+	/* records the binding */
+	afb_api.closure = dynapi;
+	afb_api.itf = &dyn_api_itf;
+	afb_api.group = NULL;
+	if (afb_apiset_add(apiset, afb_export_apiname(dynapi->export), afb_api) < 0) {
+		ERROR("dynamic api %s can't be registered to set %s, ABORTING it!",
+				afb_export_apiname(dynapi->export),
+				afb_apiset_name(apiset));
+		goto error;
+	}
+	INFO("binding %s added to set %s", afb_export_apiname(dynapi->export), afb_apiset_name(apiset));
+	return 1;
+
+error:
+	afb_export_destroy(export);
+	free(dynapi);
+
+	return -1;
+}
+
diff --git a/src/afb-api-dyn.h b/src/afb-api-dyn.h
new file mode 100644
index 00000000..ea184df1
--- /dev/null
+++ b/src/afb-api-dyn.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author: José Bollo <jose.bollo@iot.bzh>
+ *
+ * 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.
+ */
+
+
+#pragma once
+
+struct afb_apiset;
+struct afb_dynapi;
+struct afb_auth;
+struct afb_request;
+struct afb_verb_v2;
+
+struct afb_api_dyn_verb
+{
+	void (*callback)(struct afb_request *request);
+	const struct afb_auth *auth;
+	const char *info;
+	int session;
+	char verb[1];
+};
+
+struct afb_api_dyn;
+
+extern int afb_api_dyn_add(struct afb_apiset *apiset, const char *name, const char *info, int (*preinit)(void*, struct afb_dynapi*), void *closure);
+
+extern void afb_api_dyn_set_verbs_v2(
+		struct afb_api_dyn *dynapi,
+		const struct afb_verb_v2 *verbs);
+
+extern int afb_api_dyn_add_verb(
+		struct afb_api_dyn *dynapi,
+		const char *verb,
+		const char *info,
+		void (*callback)(struct afb_request *request),
+		const struct afb_auth *auth,
+		uint32_t session);
+
+extern int afb_api_dyn_sub_verb(
+		struct afb_api_dyn *dynapi,
+		const char *verb);
+
diff --git a/src/afb-export.c b/src/afb-export.c
index bd5b61e0..5688cfee 100644
--- a/src/afb-export.c
+++ b/src/afb-export.c
@@ -23,11 +23,12 @@
 
 #include <json-c/json.h>
 
-#include <afb/afb-binding-v1.h>
-#include <afb/afb-binding-v2.h>
+#define AFB_BINDING_VERSION 0
+#include <afb/afb-binding.h>
 
 #include "afb-api.h"
 #include "afb-apiset.h"
+#include "afb-api-dyn.h"
 #include "afb-common.h"
 #include "afb-cred.h"
 #include "afb-evt.h"
@@ -39,17 +40,15 @@
 #include "jobs.h"
 #include "verbose.h"
 
-
 /*************************************************************************
  * internal types and structures
  ************************************************************************/
 
 enum afb_api_version
 {
-	Api_Version_None = 0,
+	Api_Version_Dyn = 0,
 	Api_Version_1 = 1,
 	Api_Version_2 = 2,
-	Api_Version_3 = 3
 };
 
 enum afb_api_state
@@ -61,6 +60,9 @@ enum afb_api_state
 
 struct afb_export
 {
+	/* keep it first */
+	struct afb_dynapi dynapi;
+
 	/* name of the api */
 	char *apiname;
 
@@ -74,6 +76,9 @@ struct afb_export
 	int hookditf;
 	int hooksvc;
 
+	/* dynamic api */
+	struct afb_api_dyn *apidyn;
+
 	/* session for service */
 	struct afb_session *session;
 
@@ -87,11 +92,13 @@ struct afb_export
 	union {
 		int (*v1)(struct afb_service);
 		int (*v2)();
+		int (*vdyn)(struct afb_dynapi *dynapi);
 	} init;
 
 	/* event handling */
 	union {
 		void (*v12)(const char *event, struct json_object *object);
+		void (*vdyn)(struct afb_dynapi *dynapi, const char *event, struct json_object *object);
 	} on_event;
 
 	/* exported data */
@@ -101,6 +108,18 @@ struct afb_export
 	} export;
 };
 
+/************************************************************************************************************/
+
+static inline struct afb_dynapi *to_dynapi(struct afb_export *export)
+{
+	return (struct afb_dynapi*)export;
+}
+
+static inline struct afb_export *from_dynapi(struct afb_dynapi *dynapi)
+{
+	return (struct afb_export*)dynapi;
+}
+
 /*************************************************************************************************************
  *************************************************************************************************************
  *************************************************************************************************************
@@ -232,6 +251,17 @@ static int rename_api_cb(void *closure, const char *name)
 	return 0;
 }
 
+static int api_new_api_cb(
+		void *closure,
+		const char *api,
+		const char *info,
+		int (*preinit)(void*, struct afb_dynapi *),
+		void *preinit_closure)
+{
+	struct afb_export *export = closure;
+	return afb_api_dyn_add(export->apiset, api, info, preinit, preinit_closure);
+}
+
 /**********************************************
 * hooked flow
 **********************************************/
@@ -342,6 +372,16 @@ static int hooked_rename_api_cb(void *closure, const char *name)
 	return afb_hook_ditf_rename_api(export, oldname, name, result);
 }
 
+static int hooked_api_new_api_cb(
+		void *closure,
+		const char *api,
+		const char *info,
+		int (*preinit)(void*, struct afb_dynapi *),
+		void *preinit_closure)
+{
+	/* TODO */
+	return api_new_api_cb(closure, api, info, preinit, preinit_closure);
+}
 /**********************************************
 * vectors
 **********************************************/
@@ -358,7 +398,8 @@ static const struct afb_daemon_itf daemon_itf = {
 	.queue_job = queue_job_cb,
 	.unstore_req = unstore_req_cb,
 	.require_api = require_api_cb,
-	.rename_api = rename_api_cb
+	.rename_api = rename_api_cb,
+	.new_api = api_new_api_cb,
 };
 
 static const struct afb_daemon_itf hooked_daemon_itf = {
@@ -374,10 +415,10 @@ static const struct afb_daemon_itf hooked_daemon_itf = {
 	.queue_job = hooked_queue_job_cb,
 	.unstore_req = hooked_unstore_req_cb,
 	.require_api = hooked_require_api_cb,
-	.rename_api = hooked_rename_api_cb
+	.rename_api = hooked_rename_api_cb,
+	.new_api = hooked_api_new_api_cb,
 };
 
-
 /*************************************************************************************************************
  *************************************************************************************************************
  *************************************************************************************************************
@@ -411,7 +452,10 @@ struct call_req
 	struct afb_export *export;
 
 	/* the args */
-	void (*callback)(void*, int, struct json_object*);
+	union {
+		void (*callback)(void*, int, struct json_object*);
+		void (*callback_dynapi)(void*, int, struct json_object*, struct afb_dynapi*);
+	};
 	void *closure;
 
 	/* sync */
@@ -433,7 +477,7 @@ static void callreq_destroy(struct afb_xreq *xreq)
 	free(callreq);
 }
 
-static void callreq_reply(struct afb_xreq *xreq, int status, json_object *obj)
+static void callreq_reply_async(struct afb_xreq *xreq, int status, json_object *obj)
 {
 	struct call_req *callreq = CONTAINER_OF_XREQ(struct call_req, xreq);
 	if (callreq->callback)
@@ -441,6 +485,14 @@ static void callreq_reply(struct afb_xreq *xreq, int status, json_object *obj)
 	json_object_put(obj);
 }
 
+static void callreq_reply_async_dynapi(struct afb_xreq *xreq, int status, json_object *obj)
+{
+	struct call_req *callreq = CONTAINER_OF_XREQ(struct call_req, xreq);
+	if (callreq->callback_dynapi)
+		callreq->callback_dynapi(callreq->closure, status, obj, to_dynapi(callreq->export));
+	json_object_put(obj);
+}
+
 static void callreq_sync_leave(struct call_req *callreq)
 {
 	struct jobloop *jobloop = callreq->jobloop;
@@ -474,9 +526,15 @@ static void callreq_sync_enter(int signum, void *closure, struct jobloop *jobloo
 }
 
 /* interface for requests of services */
-const struct afb_xreq_query_itf afb_export_xreq_itf = {
+const struct afb_xreq_query_itf afb_export_xreq_async_itf = {
 	.unref = callreq_destroy,
-	.reply = callreq_reply
+	.reply = callreq_reply_async
+};
+
+/* interface for requests of services */
+const struct afb_xreq_query_itf afb_export_xreq_async_dynapi_itf = {
+	.unref = callreq_destroy,
+	.reply = callreq_reply_async_dynapi
 };
 
 /* interface for requests of services */
@@ -488,7 +546,12 @@ const struct afb_xreq_query_itf afb_export_xreq_sync_itf = {
 /*
  * create an call_req
  */
-static struct call_req *callreq_create(struct afb_export *export, const char *api, const char *verb, struct json_object *args, const struct afb_xreq_query_itf *itf)
+static struct call_req *callreq_create(
+		struct afb_export *export,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		const struct afb_xreq_query_itf *itf)
 {
 	struct call_req *callreq;
 	size_t lenapi, lenverb;
@@ -519,14 +582,20 @@ static struct call_req *callreq_create(struct afb_export *export, const char *ap
 /*
  * Initiates a call for the service
  */
-static void svc_call(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cbclosure)
+static void svc_call(
+		void *closure,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		void (*callback)(void*, int, struct json_object*),
+		void *cbclosure)
 {
 	struct afb_export *export = closure;
 	struct call_req *callreq;
 	struct json_object *ierr;
 
 	/* allocates the request */
-	callreq = callreq_create(export, api, verb, args, &afb_export_xreq_itf);
+	callreq = callreq_create(export, api, verb, args, &afb_export_xreq_async_itf);
 	if (callreq == NULL) {
 		ERROR("out of memory");
 		json_object_put(args);
@@ -546,8 +615,45 @@ static void svc_call(void *closure, const char *api, const char *verb, struct js
 	afb_xreq_process(&callreq->xreq, export->apiset);
 }
 
-static int svc_call_sync(void *closure, const char *api, const char *verb, struct json_object *args,
-				struct json_object **result)
+static void svc_call_dynapi(
+		struct afb_dynapi *dynapi,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		void (*callback)(void*, int, struct json_object*, struct afb_dynapi*),
+		void *cbclosure)
+{
+	struct afb_export *export = from_dynapi(dynapi);
+	struct call_req *callreq;
+	struct json_object *ierr;
+
+	/* allocates the request */
+	callreq = callreq_create(export, api, verb, args, &afb_export_xreq_async_dynapi_itf);
+	if (callreq == NULL) {
+		ERROR("out of memory");
+		json_object_put(args);
+		ierr = afb_msg_json_internal_error();
+		if (callback)
+			callback(cbclosure, -1, ierr, to_dynapi(export));
+		json_object_put(ierr);
+		return;
+	}
+
+	/* initialises the request */
+	callreq->jobloop = NULL;
+	callreq->callback_dynapi = callback;
+	callreq->closure = cbclosure;
+
+	/* terminates and frees ressources if needed */
+	afb_xreq_process(&callreq->xreq, export->apiset);
+}
+
+static int svc_call_sync(
+		void *closure,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		struct json_object **result)
 {
 	struct afb_export *export = closure;
 	struct call_req *callreq;
@@ -585,7 +691,10 @@ static int svc_call_sync(void *closure, const char *api, const char *verb, struc
 struct hooked_call
 {
 	struct afb_export *export;
-	void (*callback)(void*, int, struct json_object*);
+	union {
+		void (*callback)(void*, int, struct json_object*);
+		void (*callback_dynapi)(void*, int, struct json_object*, struct afb_dynapi*);
+	};
 	void *cbclosure;
 };
 
@@ -597,7 +706,21 @@ static void svc_hooked_call_result(void *closure, int status, struct json_object
 	free(hc);
 }
 
-static void svc_hooked_call(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cbclosure)
+static void svc_hooked_call_dynapi_result(void *closure, int status, struct json_object *result, struct afb_dynapi *dynapi)
+{
+	struct hooked_call *hc = closure;
+	afb_hook_svc_call_result(hc->export, status, result);
+	hc->callback_dynapi(hc->cbclosure, status, result, dynapi);
+	free(hc);
+}
+
+static void svc_hooked_call(
+		void *closure,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		void (*callback)(void*, int, struct json_object*),
+		void *cbclosure)
 {
 	struct afb_export *export = closure;
 	struct hooked_call *hc;
@@ -620,8 +743,41 @@ static void svc_hooked_call(void *closure, const char *api, const char *verb, st
 	svc_call(closure, api, verb, args, callback, cbclosure);
 }
 
-static int svc_hooked_call_sync(void *closure, const char *api, const char *verb, struct json_object *args,
-				struct json_object **result)
+static void svc_hooked_call_dynapi(
+		struct afb_dynapi *dynapi,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		void (*callback)(void*, int, struct json_object*, struct afb_dynapi*),
+		void *cbclosure)
+{
+	struct afb_export *export = from_dynapi(dynapi);
+	struct hooked_call *hc;
+
+	if (export->hooksvc & afb_hook_flag_svc_call)
+		afb_hook_svc_call(export, api, verb, args);
+
+	if (export->hooksvc & afb_hook_flag_svc_call_result) {
+		hc = malloc(sizeof *hc);
+		if (!hc)
+			WARNING("allocation failed");
+		else {
+			hc->export = export;
+			hc->callback_dynapi = callback;
+			hc->cbclosure = cbclosure;
+			callback = svc_hooked_call_dynapi_result;
+			cbclosure = hc;
+		}
+	}
+	svc_call_dynapi(dynapi, api, verb, args, callback, cbclosure);
+}
+
+static int svc_hooked_call_sync(
+		void *closure,
+		const char *api,
+		const char *verb,
+		struct json_object *args,
+		struct json_object **result)
 {
 	struct afb_export *export = closure;
 	struct json_object *resu;
@@ -659,6 +815,195 @@ static const struct afb_service_itf hooked_service_itf = {
  *************************************************************************************************************
  *************************************************************************************************************
  *************************************************************************************************************
+                                           F R O M     D Y N A P I
+ *************************************************************************************************************
+ *************************************************************************************************************
+ *************************************************************************************************************
+ *************************************************************************************************************/
+
+static int api_set_verbs_v2_cb(
+		struct afb_dynapi *dynapi,
+		const struct afb_verb_v2 *verbs)
+{
+	struct afb_export *export = from_dynapi(dynapi);
+
+	if (export->apidyn) {
+		afb_api_dyn_set_verbs_v2(export->apidyn, verbs);
+		return 0;
+	}
+
+	errno = EPERM;
+	return -1;
+}
+
+static int api_add_verb_cb(
+		struct afb_dynapi *dynapi,
+		const char *verb,
+		const char *info,
+		void (*callback)(struct afb_request *request),
+		const struct afb_auth *auth,
+		uint32_t session)
+{
+	struct afb_export *export = from_dynapi(dynapi);
+
+	if (export->apidyn)
+		return afb_api_dyn_add_verb(export->apidyn, verb, info, callback, auth, session);
+
+	errno = EPERM;
+	return -1;
+}
+
+static int api_sub_verb_cb(
+		struct afb_dynapi *dynapi,
+		const char *verb)
+{
+	struct afb_export *export = from_dynapi(dynapi);
+
+	if (export->apidyn)
+		return afb_api_dyn_sub_verb(export->apidyn, verb);
+
+	errno = EPERM;
+	return -1;
+}
+
+static int api_set_on_event_cb(
+		struct afb_dynapi *dynapi,
+		void (*onevent)(struct afb_dynapi *dynapi, const char *event, struct json_object *object))
+{
+	struct afb_export *export = from_dynapi(dynapi);
+	return afb_export_handle_events_vdyn(export, onevent);
+}
+
+static int api_set_on_init_cb(
+		struct afb_dynapi *dynapi,
+		int (*oninit)(struct afb_dynapi *dynapi))
+{
+	struct afb_export *export = from_dynapi(dynapi);
+
+	return afb_export_handle_init_vdyn(export, oninit);
+}
+
+static void api_seal_cb(
+		struct afb_dynapi *dynapi)
+{
+	struct afb_export *export = from_dynapi(dynapi);
+
+	export->apidyn = NULL;
+}
+
+static int hooked_api_set_verbs_v2_cb(
+		struct afb_dynapi *dynapi,
+		const struct afb_verb_v2 *verbs)
+{
+	/* TODO */
+	return api_set_verbs_v2_cb(dynapi, verbs);
+}
+
+static int hooked_api_add_verb_cb(
+		struct afb_dynapi *dynapi,
+		const char *verb,
+		const char *info,
+		void (*callback)(struct afb_request *request),
+		const struct afb_auth *auth,
+		uint32_t session)
+{
+	/* TODO */
+	return api_add_verb_cb(dynapi, verb, info, callback, auth, session);
+}
+
+static int hooked_api_sub_verb_cb(
+		struct afb_dynapi *dynapi,
+		const char *verb)
+{
+	/* TODO */
+	return api_sub_verb_cb(dynapi, verb);
+}
+
+static int hooked_api_set_on_event_cb(
+		struct afb_dynapi *dynapi,
+		void (*onevent)(struct afb_dynapi *dynapi, const char *event, struct json_object *object))
+{
+	/* TODO */
+	return api_set_on_event_cb(dynapi, onevent);
+}
+
+static int hooked_api_set_on_init_cb(
+		struct afb_dynapi *dynapi,
+		int (*oninit)(struct afb_dynapi *dynapi))
+{
+	/* TODO */
+	return api_set_on_init_cb(dynapi, oninit);
+}
+
+static void hooked_api_seal_cb(
+		struct afb_dynapi *dynapi)
+{
+	/* TODO */
+	api_seal_cb(dynapi);
+}
+
+static const struct afb_dynapi_itf dynapi_itf = {
+
+	.vverbose = (void*)vverbose_cb,
+
+	.get_event_loop = afb_common_get_event_loop,
+	.get_user_bus = afb_common_get_user_bus,
+	.get_system_bus = afb_common_get_system_bus,
+	.rootdir_get_fd = afb_common_rootdir_get_fd,
+	.rootdir_open_locale = rootdir_open_locale_cb,
+	.queue_job = queue_job_cb,
+
+	.require_api = require_api_cb,
+	.rename_api = rename_api_cb,
+
+	.event_broadcast = event_broadcast_cb,
+	.eventid_make = eventid_make_cb,
+
+	.call = svc_call_dynapi,
+	.call_sync = svc_call_sync,
+
+	.api_new_api = api_new_api_cb,
+	.api_set_verbs_v2 = api_set_verbs_v2_cb,
+	.api_add_verb = api_add_verb_cb,
+	.api_sub_verb = api_sub_verb_cb,
+	.api_set_on_event = api_set_on_event_cb,
+	.api_set_on_init = api_set_on_init_cb,
+	.api_seal = api_seal_cb,
+};
+
+static const struct afb_dynapi_itf hooked_dynapi_itf = {
+
+	.vverbose = hooked_vverbose_cb,
+
+	.get_event_loop = hooked_get_event_loop,
+	.get_user_bus = hooked_get_user_bus,
+	.get_system_bus = hooked_get_system_bus,
+	.rootdir_get_fd = hooked_rootdir_get_fd,
+	.rootdir_open_locale = hooked_rootdir_open_locale_cb,
+	.queue_job = hooked_queue_job_cb,
+
+	.require_api = hooked_require_api_cb,
+	.rename_api = hooked_rename_api_cb,
+
+	.event_broadcast = hooked_event_broadcast_cb,
+	.eventid_make = hooked_eventid_make_cb,
+
+	.call = svc_hooked_call_dynapi,
+	.call_sync = svc_hooked_call_sync,
+
+	.api_new_api = hooked_api_new_api_cb,
+	.api_set_verbs_v2 = hooked_api_set_verbs_v2_cb,
+	.api_add_verb = hooked_api_add_verb_cb,
+	.api_sub_verb = hooked_api_sub_verb_cb,
+	.api_set_on_event = hooked_api_set_on_event_cb,
+	.api_set_on_init = hooked_api_set_on_init_cb,
+	.api_seal = hooked_api_seal_cb,
+};
+
+/*************************************************************************************************************
+ *************************************************************************************************************
+ *************************************************************************************************************
+ *************************************************************************************************************
                                            F R O M     S V C
  *************************************************************************************************************
  *************************************************************************************************************
@@ -686,6 +1031,27 @@ static const struct afb_evt_itf evt_v12_itf = {
 	.push = export_on_event_v12
 };
 
+/*
+ * Propagates the event to the service
+ */
+static void export_on_event_vdyn(void *closure, const char *event, int eventid, struct json_object *object)
+{
+	struct afb_export *export = closure;
+
+	if (export->hooksvc & afb_hook_flag_svc_on_event_before)
+		afb_hook_svc_on_event_before(export, event, eventid, object);
+	export->on_event.vdyn(to_dynapi(export), event, object);
+	if (export->hooksvc & afb_hook_flag_svc_on_event_after)
+		afb_hook_svc_on_event_after(export, event, eventid, object);
+	json_object_put(object);
+}
+
+/* the interface for events */
+static const struct afb_evt_itf evt_vdyn_itf = {
+	.broadcast = export_on_event_vdyn,
+	.push = export_on_event_vdyn
+};
+
 /*************************************************************************************************************
  *************************************************************************************************************
  *************************************************************************************************************
@@ -738,9 +1104,9 @@ struct afb_export *afb_export_create_v1(struct afb_apiset *apiset, const char *a
 	if (export) {
 		export->init.v1 = init;
 		export->on_event.v12 = onevent;
-		export->export.v1.verbosity = verbosity;
 		export->export.v1.mode = AFB_MODE_LOCAL;
 		export->export.v1.daemon.closure = export;
+		afb_export_verbosity_set(export, verbosity);
 		afb_export_update_hook(export);
 	}
 	return export;
@@ -753,9 +1119,20 @@ struct afb_export *afb_export_create_v2(struct afb_apiset *apiset, const char *a
 		export->init.v2 = init;
 		export->on_event.v12 = onevent;
 		export->export.v2 = data;
-		data->verbosity = verbosity;
 		data->daemon.closure = export;
 		data->service.closure = export;
+		afb_export_verbosity_set(export, verbosity);
+		afb_export_update_hook(export);
+	}
+	return export;
+}
+
+struct afb_export *afb_export_create_vdyn(struct afb_apiset *apiset, const char *apiname, struct afb_api_dyn *apidyn)
+{
+	struct afb_export *export = create(apiset, apiname, Api_Version_Dyn);
+	if (export) {
+		export->apidyn = apidyn;
+		afb_export_verbosity_set(export, verbosity);
 		afb_export_update_hook(export);
 	}
 	return export;
@@ -777,11 +1154,12 @@ void afb_export_update_hook(struct afb_export *export)
 {
 	export->hookditf = afb_hook_flags_ditf(export->apiname);
 	export->hooksvc = afb_hook_flags_svc(export->apiname);
+	export->dynapi.itf = export->hookditf|export->hooksvc ? &hooked_dynapi_itf : &dynapi_itf;
+
 	switch (export->version) {
 	case Api_Version_1:
 		export->export.v1.daemon.itf = export->hookditf ? &hooked_daemon_itf : &daemon_itf;
 		break;
-	default:
 	case Api_Version_2:
 		export->export.v2->daemon.itf = export->hookditf ? &hooked_daemon_itf : &daemon_itf;
 		export->export.v2->service.itf = export->hooksvc ? &hooked_service_itf : &service_itf;
@@ -820,9 +1198,6 @@ struct afb_apiset *afb_export_get_apiset(struct afb_export *export)
 	return export->apiset;
 }
 
-/*
- * Creates a new service
- */
 int afb_export_handle_events_v12(struct afb_export *export, void (*on_event)(const char *event, struct json_object *object))
 {
 	/* check version */
@@ -852,6 +1227,47 @@ int afb_export_handle_events_v12(struct afb_export *export, void (*on_event)(con
 	return 0;
 }
 
+int afb_export_handle_events_vdyn(struct afb_export *export, void (*on_event)(struct afb_dynapi *dynapi, const char *event, struct json_object *object))
+{
+	/* check version */
+	switch (export->version) {
+	case Api_Version_Dyn: break;
+	default:
+		ERROR("invalid version Dyn for API %s", export->apiname);
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* set the event handler */
+	if (!on_event) {
+		if (export->listener) {
+			afb_evt_listener_unref(export->listener);
+			export->listener = NULL;
+		}
+		export->on_event.vdyn = on_event;
+	} else {
+		export->on_event.vdyn = on_event;
+		if (!export->listener) {
+			export->listener = afb_evt_listener_create(&evt_vdyn_itf, export);
+			if (export->listener == NULL)
+				return -1;
+		}
+	}
+	return 0;
+}
+
+int afb_export_handle_init_vdyn(struct afb_export *export, int (*oninit)(struct afb_dynapi *dynapi))
+{
+	if (export->state != Api_State_Pre_Init) {
+		ERROR("[API %s] Bad call to 'afb_dynapi_on_init', must be in PreInit", export->apiname);
+		errno = EINVAL;
+		return -1;
+	}
+
+	export->init.vdyn  = oninit;
+	return 0;
+}
+
 /*
  * Starts a new service (v1)
  */
@@ -860,17 +1276,19 @@ struct afb_binding_v1 *afb_export_register_v1(struct afb_export *export, struct
 	return regfun(&export->export.v1);
 }
 
+int afb_export_preinit_vdyn(struct afb_export *export, int (*preinit)(void*, struct afb_dynapi*), void *closure)
+{
+	return preinit(closure, to_dynapi(export));
+}
+
 int afb_export_verbosity_get(const struct afb_export *export)
 {
-	switch (export->version) {
-	case Api_Version_1: return export->export.v1.verbosity;
-	case Api_Version_2: return export->export.v2->verbosity;
-	}
-	return verbosity;
+	return export->dynapi.verbosity;
 }
 
 void afb_export_verbosity_set(struct afb_export *export, int level)
 {
+	export->dynapi.verbosity = level;
 	switch (export->version) {
 	case Api_Version_1: export->export.v1.verbosity = level; break;
 	case Api_Version_2: export->export.v2->verbosity = level; break;
@@ -937,6 +1355,9 @@ int afb_export_start(struct afb_export *export, int share_session, int onneed, s
 	case Api_Version_2:
 		rc = export->init.v2 ? export->init.v2() : 0;
 		break;
+	case Api_Version_Dyn:
+		rc = export->init.vdyn ? export->init.vdyn(to_dynapi(export)) : 0;
+		break;
 	default:
 		break;
 	}
diff --git a/src/afb-export.h b/src/afb-export.h
index 9bd08204..ff9dc10e 100644
--- a/src/afb-export.h
+++ b/src/afb-export.h
@@ -17,15 +17,20 @@
 
 #pragma once
 
+struct json_object;
+
 struct afb_export;
 struct afb_apiset;
+struct afb_api_dyn;
 
 struct afb_service;
 struct afb_binding_data_v2;
 struct afb_binding_interface_v1;
+struct afb_dynapi;
 
 extern struct afb_export *afb_export_create_v1(struct afb_apiset *apiset, const char *apiname, int (*init)(struct afb_service), void (*onevent)(const char*, struct json_object*));
 extern struct afb_export *afb_export_create_v2(struct afb_apiset *apiset, const char *apiname, struct afb_binding_data_v2 *data, int (*init)(), void (*onevent)(const char*, struct json_object*));
+extern struct afb_export *afb_export_create_vdyn(struct afb_apiset *apiset, const char *apiname, struct afb_api_dyn *dynapi);
 
 extern void afb_export_destroy(struct afb_export *export);
 
@@ -38,7 +43,11 @@ extern void afb_export_set_apiset(struct afb_export *export, struct afb_apiset *
 extern struct afb_apiset *afb_export_get_apiset(struct afb_export *export);
 	
 extern struct afb_binding_v1 *afb_export_register_v1(struct afb_export *export, struct afb_binding_v1 *(*regfun)(const struct afb_binding_interface_v1*));
+extern int afb_export_preinit_vdyn(struct afb_export *export, int (*preinit)(void*, struct afb_dynapi*), void *closure);
+
 extern int afb_export_handle_events_v12(struct afb_export *export, void (*on_event)(const char *event, struct json_object *object));
+extern int afb_export_handle_events_vdyn(struct afb_export *export, void (*on_event)(struct afb_dynapi *dynapi, const char *event, struct json_object *object));
+extern int afb_export_handle_init_vdyn(struct afb_export *export, int (*oninit)(struct afb_dynapi *dynapi));
 
 extern int afb_export_start(struct afb_export *export, int share_session, int onneed, struct afb_apiset *apiset);
 
diff --git a/src/afb-xreq.c b/src/afb-xreq.c
index 8bfb3639..cbed87f3 100644
--- a/src/afb-xreq.c
+++ b/src/afb-xreq.c
@@ -34,6 +34,7 @@
 #include "afb-cred.h"
 #include "afb-hook.h"
 #include "afb-api.h"
+#include "afb-api-dyn.h"
 #include "afb-apiset.h"
 #include "afb-auth.h"
 #include "jobs.h"
@@ -1039,6 +1040,15 @@ void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb
 			verb->callback(to_req(xreq));
 }
 
+void afb_xreq_call_verb_vdyn(struct afb_xreq *xreq, const struct afb_api_dyn_verb *verb)
+{
+	if (!verb)
+		afb_xreq_fail_unknown_verb(xreq);
+	else
+		if (xreq_session_check_apply_v2(xreq, verb->session, verb->auth) >= 0)
+			verb->callback(to_request(xreq));
+}
+
 void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf)
 {
 	memset(xreq, 0, sizeof *xreq);
diff --git a/src/afb-xreq.h b/src/afb-xreq.h
index d899a3d3..d78d88fb 100644
--- a/src/afb-xreq.h
+++ b/src/afb-xreq.h
@@ -25,6 +25,7 @@ struct afb_evt_listener;
 struct afb_xreq;
 struct afb_cred;
 struct afb_apiset;
+struct afb_api_dyn_verb;
 struct afb_eventid;
 struct afb_verb_desc_v1;
 struct afb_verb_v2;
@@ -148,4 +149,4 @@ extern void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset);
 
 extern void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb);
 extern void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb);
-
+extern void afb_xreq_call_verb_vdyn(struct afb_xreq *xreq, const struct afb_api_dyn_verb *verb);