2 * Copyright (C) 2016, 2017 "IoT.bzh"
3 * Author José Bollo <jose.bollo@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
28 #include <json-c/json.h>
30 #include <afb/afb-req-common.h>
31 #include <afb/afb-event-itf.h>
33 #include "afb-context.h"
35 #include "afb-session.h"
44 * Definition of a hook for xreq
46 struct afb_hook_xreq {
47 struct afb_hook_xreq *next; /**< next hook */
48 unsigned refcount; /**< reference count */
49 char *api; /**< api hooked or NULL for any */
50 char *verb; /**< verb hooked or NULL for any */
51 struct afb_session *session; /**< session hooked or NULL if any */
52 unsigned flags; /**< hook flags */
53 struct afb_hook_xreq_itf *itf; /**< interface of hook */
54 void *closure; /**< closure for callbacks */
58 * Definition of a hook for ditf
60 struct afb_hook_ditf {
61 struct afb_hook_ditf *next; /**< next hook */
62 unsigned refcount; /**< reference count */
63 char *api; /**< api hooked or NULL for any */
64 unsigned flags; /**< hook flags */
65 struct afb_hook_ditf_itf *itf; /**< interface of hook */
66 void *closure; /**< closure for callbacks */
70 * Definition of a hook for svc
73 struct afb_hook_svc *next; /**< next hook */
74 unsigned refcount; /**< reference count */
75 char *api; /**< api hooked or NULL for any */
76 unsigned flags; /**< hook flags */
77 struct afb_hook_svc_itf *itf; /**< interface of hook */
78 void *closure; /**< closure for callbacks */
82 * Definition of a hook for evt
85 struct afb_hook_evt *next; /**< next hook */
86 unsigned refcount; /**< reference count */
87 char *pattern; /**< event pattern name hooked or NULL for any */
88 unsigned flags; /**< hook flags */
89 struct afb_hook_evt_itf *itf; /**< interface of hook */
90 void *closure; /**< closure for callbacks */
93 /* synchronisation across threads */
94 static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
96 /* list of hooks for xreq */
97 static struct afb_hook_xreq *list_of_xreq_hooks = NULL;
99 /* list of hooks for ditf */
100 static struct afb_hook_ditf *list_of_ditf_hooks = NULL;
102 /* list of hooks for svc */
103 static struct afb_hook_svc *list_of_svc_hooks = NULL;
105 /* list of hooks for evt */
106 static struct afb_hook_evt *list_of_evt_hooks = NULL;
108 /******************************************************************************
109 * section: default callbacks for tracing requests
110 *****************************************************************************/
112 static char *_pbuf_(const char *fmt, va_list args, char **palloc, char *sbuf, size_t szsbuf)
119 rc = vsnprintf(sbuf, szsbuf, fmt, args);
120 if ((size_t)rc >= szsbuf) {
122 sbuf[szsbuf-2] = sbuf[szsbuf-3] = sbuf[szsbuf-4] = '.';
123 rc = vasprintf(palloc, fmt, cp);
131 static void _hook_(const char *fmt1, const char *fmt2, va_list arg2, ...)
133 char *tag, *data, *mem1, *mem2, buf1[256], buf2[2000];
136 data = _pbuf_(fmt2, arg2, &mem2, buf2, sizeof buf2);
138 va_start(arg1, arg2);
139 tag = _pbuf_(fmt1, arg1, &mem1, buf1, sizeof buf1);
142 NOTICE("[HOOK %s] %s", tag, data);
148 static void _hook_xreq_(const struct afb_xreq *xreq, const char *format, ...)
151 va_start(ap, format);
152 _hook_("xreq-%06d:%s/%s", format, ap, xreq->hookindex, xreq->api, xreq->verb);
156 static void hook_xreq_begin_default_cb(void * closure, const struct afb_xreq *xreq)
159 _hook_xreq_(xreq, "BEGIN");
161 _hook_xreq_(xreq, "BEGIN uid=%d=%s gid=%d pid=%d label=%s id=%s",
162 (int)xreq->cred->uid,
164 (int)xreq->cred->gid,
165 (int)xreq->cred->pid,
166 xreq->cred->label?:"(null)",
167 xreq->cred->id?:"(null)"
171 static void hook_xreq_end_default_cb(void * closure, const struct afb_xreq *xreq)
173 _hook_xreq_(xreq, "END");
176 static void hook_xreq_json_default_cb(void * closure, const struct afb_xreq *xreq, struct json_object *obj)
178 _hook_xreq_(xreq, "json() -> %s", json_object_to_json_string(obj));
181 static void hook_xreq_get_default_cb(void * closure, const struct afb_xreq *xreq, const char *name, struct afb_arg arg)
183 _hook_xreq_(xreq, "get(%s) -> { name: %s, value: %s, path: %s }", name, arg.name, arg.value, arg.path);
186 static void hook_xreq_success_default_cb(void * closure, const struct afb_xreq *xreq, struct json_object *obj, const char *info)
188 _hook_xreq_(xreq, "success(%s, %s)", json_object_to_json_string(obj), info);
191 static void hook_xreq_fail_default_cb(void * closure, const struct afb_xreq *xreq, const char *status, const char *info)
193 _hook_xreq_(xreq, "fail(%s, %s)", status, info);
196 static void hook_xreq_context_get_default_cb(void * closure, const struct afb_xreq *xreq, void *value)
198 _hook_xreq_(xreq, "context_get() -> %p", value);
201 static void hook_xreq_context_set_default_cb(void * closure, const struct afb_xreq *xreq, void *value, void (*free_value)(void*))
203 _hook_xreq_(xreq, "context_set(%p, %p)", value, free_value);
206 static void hook_xreq_addref_default_cb(void * closure, const struct afb_xreq *xreq)
208 _hook_xreq_(xreq, "addref()");
211 static void hook_xreq_unref_default_cb(void * closure, const struct afb_xreq *xreq)
213 _hook_xreq_(xreq, "unref()");
216 static void hook_xreq_session_close_default_cb(void * closure, const struct afb_xreq *xreq)
218 _hook_xreq_(xreq, "session_close()");
221 static void hook_xreq_session_set_LOA_default_cb(void * closure, const struct afb_xreq *xreq, unsigned level, int result)
223 _hook_xreq_(xreq, "session_set_LOA(%u) -> %d", level, result);
226 static void hook_xreq_subscribe_default_cb(void * closure, const struct afb_xreq *xreq, struct afb_event event, int result)
228 _hook_xreq_(xreq, "subscribe(%s:%d) -> %d", afb_evt_event_name(event), afb_evt_event_id(event), result);
231 static void hook_xreq_unsubscribe_default_cb(void * closure, const struct afb_xreq *xreq, struct afb_event event, int result)
233 _hook_xreq_(xreq, "unsubscribe(%s:%d) -> %d", afb_evt_event_name(event), afb_evt_event_id(event), result);
236 static void hook_xreq_subcall_default_cb(void * closure, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
238 _hook_xreq_(xreq, "subcall(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
241 static void hook_xreq_subcall_result_default_cb(void * closure, const struct afb_xreq *xreq, int status, struct json_object *result)
243 _hook_xreq_(xreq, " ...subcall... -> %d: %s", status, json_object_to_json_string(result));
246 static void hook_xreq_subcallsync_default_cb(void * closure, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
248 _hook_xreq_(xreq, "subcallsync(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
251 static void hook_xreq_subcallsync_result_default_cb(void * closure, const struct afb_xreq *xreq, int status, struct json_object *result)
253 _hook_xreq_(xreq, " ...subcallsync... -> %d: %s", status, json_object_to_json_string(result));
256 static void hook_xreq_vverbose_default_cb(void * closure, const struct afb_xreq *xreq, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
263 len = vasprintf(&msg, fmt, ap);
267 _hook_xreq_(xreq, "vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, func, fmt);
269 _hook_xreq_(xreq, "vverbose(%d, %s, %d, %s) -> %s", level, file, line, func, msg);
274 static void hook_xreq_store_default_cb(void * closure, const struct afb_xreq *xreq, struct afb_stored_req *sreq)
276 _hook_xreq_(xreq, "store() -> %p", sreq);
279 static void hook_xreq_unstore_default_cb(void * closure, const struct afb_xreq *xreq)
281 _hook_xreq_(xreq, "unstore()");
284 static void hook_xreq_subcall_req_default_cb(void * closure, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
286 _hook_xreq_(xreq, "subcall_req(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
289 static void hook_xreq_subcall_req_result_default_cb(void * closure, const struct afb_xreq *xreq, int status, struct json_object *result)
291 _hook_xreq_(xreq, " ...subcall_req... -> %d: %s", status, json_object_to_json_string(result));
294 static struct afb_hook_xreq_itf hook_xreq_default_itf = {
295 .hook_xreq_begin = hook_xreq_begin_default_cb,
296 .hook_xreq_end = hook_xreq_end_default_cb,
297 .hook_xreq_json = hook_xreq_json_default_cb,
298 .hook_xreq_get = hook_xreq_get_default_cb,
299 .hook_xreq_success = hook_xreq_success_default_cb,
300 .hook_xreq_fail = hook_xreq_fail_default_cb,
301 .hook_xreq_context_get = hook_xreq_context_get_default_cb,
302 .hook_xreq_context_set = hook_xreq_context_set_default_cb,
303 .hook_xreq_addref = hook_xreq_addref_default_cb,
304 .hook_xreq_unref = hook_xreq_unref_default_cb,
305 .hook_xreq_session_close = hook_xreq_session_close_default_cb,
306 .hook_xreq_session_set_LOA = hook_xreq_session_set_LOA_default_cb,
307 .hook_xreq_subscribe = hook_xreq_subscribe_default_cb,
308 .hook_xreq_unsubscribe = hook_xreq_unsubscribe_default_cb,
309 .hook_xreq_subcall = hook_xreq_subcall_default_cb,
310 .hook_xreq_subcall_result = hook_xreq_subcall_result_default_cb,
311 .hook_xreq_subcallsync = hook_xreq_subcallsync_default_cb,
312 .hook_xreq_subcallsync_result = hook_xreq_subcallsync_result_default_cb,
313 .hook_xreq_vverbose = hook_xreq_vverbose_default_cb,
314 .hook_xreq_store = hook_xreq_store_default_cb,
315 .hook_xreq_unstore = hook_xreq_unstore_default_cb,
316 .hook_xreq_subcall_req = hook_xreq_subcall_req_default_cb,
317 .hook_xreq_subcall_req_result = hook_xreq_subcall_req_result_default_cb
320 /******************************************************************************
321 * section: hooks for tracing requests
322 *****************************************************************************/
324 #define _HOOK_XREQ_(what,...) \
325 struct afb_hook_xreq *hook; \
326 pthread_rwlock_rdlock(&rwlock); \
327 hook = list_of_xreq_hooks; \
329 if (hook->itf->hook_xreq_##what \
330 && (hook->flags & afb_hook_flag_req_##what) != 0 \
331 && (!hook->session || hook->session == xreq->context.session) \
332 && (!hook->api || !strcasecmp(hook->api, xreq->api)) \
333 && (!hook->verb || !strcasecmp(hook->verb, xreq->verb))) { \
334 hook->itf->hook_xreq_##what(hook->closure, __VA_ARGS__); \
338 pthread_rwlock_unlock(&rwlock);
341 void afb_hook_xreq_begin(const struct afb_xreq *xreq)
343 _HOOK_XREQ_(begin, xreq);
346 void afb_hook_xreq_end(const struct afb_xreq *xreq)
348 _HOOK_XREQ_(end, xreq);
351 struct json_object *afb_hook_xreq_json(const struct afb_xreq *xreq, struct json_object *obj)
353 _HOOK_XREQ_(json, xreq, obj);
357 struct afb_arg afb_hook_xreq_get(const struct afb_xreq *xreq, const char *name, struct afb_arg arg)
359 _HOOK_XREQ_(get, xreq, name, arg);
363 void afb_hook_xreq_success(const struct afb_xreq *xreq, struct json_object *obj, const char *info)
365 _HOOK_XREQ_(success, xreq, obj, info);
368 void afb_hook_xreq_fail(const struct afb_xreq *xreq, const char *status, const char *info)
370 _HOOK_XREQ_(fail, xreq, status, info);
373 void *afb_hook_xreq_context_get(const struct afb_xreq *xreq, void *value)
375 _HOOK_XREQ_(context_get, xreq, value);
379 void afb_hook_xreq_context_set(const struct afb_xreq *xreq, void *value, void (*free_value)(void*))
381 _HOOK_XREQ_(context_set, xreq, value, free_value);
384 void afb_hook_xreq_addref(const struct afb_xreq *xreq)
386 _HOOK_XREQ_(addref, xreq);
389 void afb_hook_xreq_unref(const struct afb_xreq *xreq)
391 _HOOK_XREQ_(unref, xreq);
394 void afb_hook_xreq_session_close(const struct afb_xreq *xreq)
396 _HOOK_XREQ_(session_close, xreq);
399 int afb_hook_xreq_session_set_LOA(const struct afb_xreq *xreq, unsigned level, int result)
401 _HOOK_XREQ_(session_set_LOA, xreq, level, result);
405 int afb_hook_xreq_subscribe(const struct afb_xreq *xreq, struct afb_event event, int result)
407 _HOOK_XREQ_(subscribe, xreq, event, result);
411 int afb_hook_xreq_unsubscribe(const struct afb_xreq *xreq, struct afb_event event, int result)
413 _HOOK_XREQ_(unsubscribe, xreq, event, result);
417 void afb_hook_xreq_subcall(const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
419 _HOOK_XREQ_(subcall, xreq, api, verb, args);
422 void afb_hook_xreq_subcall_result(const struct afb_xreq *xreq, int status, struct json_object *result)
424 _HOOK_XREQ_(subcall_result, xreq, status, result);
427 void afb_hook_xreq_subcallsync(const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
429 _HOOK_XREQ_(subcallsync, xreq, api, verb, args);
432 int afb_hook_xreq_subcallsync_result(const struct afb_xreq *xreq, int status, struct json_object *result)
434 _HOOK_XREQ_(subcallsync_result, xreq, status, result);
438 void afb_hook_xreq_vverbose(const struct afb_xreq *xreq, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
440 _HOOK_XREQ_(vverbose, xreq, level, file ?: "?", line, func ?: "?", fmt, args);
443 void afb_hook_xreq_store(const struct afb_xreq *xreq, struct afb_stored_req *sreq)
445 _HOOK_XREQ_(store, xreq, sreq);
448 void afb_hook_xreq_unstore(const struct afb_xreq *xreq)
450 _HOOK_XREQ_(unstore, xreq);
453 void afb_hook_xreq_subcall_req(const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
455 _HOOK_XREQ_(subcall_req, xreq, api, verb, args);
458 void afb_hook_xreq_subcall_req_result(const struct afb_xreq *xreq, int status, struct json_object *result)
460 _HOOK_XREQ_(subcall_req_result, xreq, status, result);
463 /******************************************************************************
464 * section: hooking xreqs
465 *****************************************************************************/
467 void afb_hook_init_xreq(struct afb_xreq *xreq)
473 struct afb_hook_xreq *hook;
475 /* scan hook list to get the expected flags */
477 pthread_rwlock_rdlock(&rwlock);
478 hook = list_of_xreq_hooks;
480 f = hook->flags & afb_hook_flags_req_all;
482 && (!hook->session || hook->session == xreq->context.session)
483 && (!hook->api || !strcasecmp(hook->api, xreq->api))
484 && (!hook->verb || !strcasecmp(hook->verb, xreq->verb));
489 pthread_rwlock_unlock(&rwlock);
491 /* store the hooking data */
492 xreq->hookflags = flags;
494 pthread_rwlock_wrlock(&rwlock);
497 xreq->hookindex = reqindex;
498 pthread_rwlock_unlock(&rwlock);
502 struct afb_hook_xreq *afb_hook_create_xreq(const char *api, const char *verb, struct afb_session *session, int flags, struct afb_hook_xreq_itf *itf, void *closure)
504 struct afb_hook_xreq *hook;
506 /* alloc the result */
507 hook = calloc(1, sizeof *hook);
511 /* get a copy of the names */
512 hook->api = api ? strdup(api) : NULL;
513 hook->verb = verb ? strdup(verb) : NULL;
514 if ((api && !hook->api) || (verb && !hook->verb)) {
521 /* initialise the rest */
522 hook->session = session;
524 afb_session_addref(session);
527 hook->itf = itf ? itf : &hook_xreq_default_itf;
528 hook->closure = closure;
530 /* record the hook */
531 pthread_rwlock_wrlock(&rwlock);
532 hook->next = list_of_xreq_hooks;
533 list_of_xreq_hooks = hook;
534 pthread_rwlock_unlock(&rwlock);
540 struct afb_hook_xreq *afb_hook_addref_xreq(struct afb_hook_xreq *hook)
542 pthread_rwlock_wrlock(&rwlock);
544 pthread_rwlock_unlock(&rwlock);
548 void afb_hook_unref_xreq(struct afb_hook_xreq *hook)
550 struct afb_hook_xreq **prv;
553 pthread_rwlock_wrlock(&rwlock);
554 if (--hook->refcount)
558 prv = &list_of_xreq_hooks;
559 while (*prv && *prv != hook)
564 pthread_rwlock_unlock(&rwlock);
570 afb_session_unref(hook->session);
576 /******************************************************************************
577 * section: default callbacks for tracing daemon interface
578 *****************************************************************************/
580 static void _hook_ditf_(const struct afb_ditf *ditf, const char *format, ...)
583 va_start(ap, format);
584 _hook_("ditf-%s", format, ap, ditf->api);
588 static void hook_ditf_event_broadcast_before_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct json_object *object)
590 _hook_ditf_(ditf, "event_broadcast.before(%s, %s)....", name, json_object_to_json_string(object));
593 static void hook_ditf_event_broadcast_after_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct json_object *object, int result)
595 _hook_ditf_(ditf, "event_broadcast.after(%s, %s) -> %d", name, json_object_to_json_string(object), result);
598 static void hook_ditf_get_event_loop_cb(void *closure, const struct afb_ditf *ditf, struct sd_event *result)
600 _hook_ditf_(ditf, "get_event_loop() -> %p", result);
603 static void hook_ditf_get_user_bus_cb(void *closure, const struct afb_ditf *ditf, struct sd_bus *result)
605 _hook_ditf_(ditf, "get_user_bus() -> %p", result);
608 static void hook_ditf_get_system_bus_cb(void *closure, const struct afb_ditf *ditf, struct sd_bus *result)
610 _hook_ditf_(ditf, "get_system_bus() -> %p", result);
613 static void hook_ditf_vverbose_cb(void*closure, const struct afb_ditf *ditf, int level, const char *file, int line, const char *function, const char *fmt, va_list args)
620 len = vasprintf(&msg, fmt, ap);
624 _hook_ditf_(ditf, "vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, function, fmt);
626 _hook_ditf_(ditf, "vverbose(%d, %s, %d, %s) -> %s", level, file, line, function, msg);
631 static void hook_ditf_event_make_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct afb_event result)
633 _hook_ditf_(ditf, "event_make(%s) -> %s:%d", name, afb_evt_event_name(result), afb_evt_event_id(result));
636 static void hook_ditf_rootdir_get_fd_cb(void *closure, const struct afb_ditf *ditf, int result)
640 _hook_ditf_(ditf, "rootdir_get_fd() -> %d, %m", result);
642 sprintf(path, "/proc/self/fd/%d", result);
643 readlink(path, path, sizeof path);
644 _hook_ditf_(ditf, "rootdir_get_fd() -> %d = %s", result, path);
648 static void hook_ditf_rootdir_open_locale_cb(void *closure, const struct afb_ditf *ditf, const char *filename, int flags, const char *locale, int result)
654 _hook_ditf_(ditf, "rootdir_open_locale(%s, %d, %s) -> %d, %m", filename, flags, locale, result);
656 sprintf(path, "/proc/self/fd/%d", result);
657 readlink(path, path, sizeof path);
658 _hook_ditf_(ditf, "rootdir_open_locale(%s, %d, %s) -> %d = %s", filename, flags, locale, result, path);
662 static void hook_ditf_queue_job_cb(void *closure, const struct afb_ditf *ditf, void (*callback)(int signum, void *arg), void *argument, void *group, int timeout, int result)
664 _hook_ditf_(ditf, "queue_job(%p, %p, %p, %d) -> %d", callback, argument, group, timeout, result);
667 static void hook_ditf_unstore_req_cb(void * closure, const struct afb_ditf *ditf, struct afb_stored_req *sreq)
669 _hook_ditf_(ditf, "unstore_req(%p)", sreq);
672 static void hook_ditf_require_api_cb(void *closure, const struct afb_ditf *ditf, const char *name, int initialized)
674 _hook_ditf_(ditf, "require_api(%s, %d)...", name, initialized);
677 static void hook_ditf_require_api_result_cb(void *closure, const struct afb_ditf *ditf, const char *name, int initialized, int result)
679 _hook_ditf_(ditf, "...require_api(%s, %d) -> %d", name, initialized, result);
682 static struct afb_hook_ditf_itf hook_ditf_default_itf = {
683 .hook_ditf_event_broadcast_before = hook_ditf_event_broadcast_before_cb,
684 .hook_ditf_event_broadcast_after = hook_ditf_event_broadcast_after_cb,
685 .hook_ditf_get_event_loop = hook_ditf_get_event_loop_cb,
686 .hook_ditf_get_user_bus = hook_ditf_get_user_bus_cb,
687 .hook_ditf_get_system_bus = hook_ditf_get_system_bus_cb,
688 .hook_ditf_vverbose = hook_ditf_vverbose_cb,
689 .hook_ditf_event_make = hook_ditf_event_make_cb,
690 .hook_ditf_rootdir_get_fd = hook_ditf_rootdir_get_fd_cb,
691 .hook_ditf_rootdir_open_locale = hook_ditf_rootdir_open_locale_cb,
692 .hook_ditf_queue_job = hook_ditf_queue_job_cb,
693 .hook_ditf_unstore_req = hook_ditf_unstore_req_cb,
694 .hook_ditf_require_api = hook_ditf_require_api_cb,
695 .hook_ditf_require_api_result = hook_ditf_require_api_result_cb
698 /******************************************************************************
699 * section: hooks for tracing daemon interface (ditf)
700 *****************************************************************************/
702 #define _HOOK_DITF_(what,...) \
703 struct afb_hook_ditf *hook; \
704 pthread_rwlock_rdlock(&rwlock); \
705 hook = list_of_ditf_hooks; \
707 if (hook->itf->hook_ditf_##what \
708 && (hook->flags & afb_hook_flag_ditf_##what) != 0 \
709 && (!hook->api || !strcasecmp(hook->api, ditf->api))) { \
710 hook->itf->hook_ditf_##what(hook->closure, __VA_ARGS__); \
714 pthread_rwlock_unlock(&rwlock);
716 void afb_hook_ditf_event_broadcast_before(const struct afb_ditf *ditf, const char *name, struct json_object *object)
718 _HOOK_DITF_(event_broadcast_before, ditf, name, object);
721 int afb_hook_ditf_event_broadcast_after(const struct afb_ditf *ditf, const char *name, struct json_object *object, int result)
723 _HOOK_DITF_(event_broadcast_after, ditf, name, object, result);
727 struct sd_event *afb_hook_ditf_get_event_loop(const struct afb_ditf *ditf, struct sd_event *result)
729 _HOOK_DITF_(get_event_loop, ditf, result);
733 struct sd_bus *afb_hook_ditf_get_user_bus(const struct afb_ditf *ditf, struct sd_bus *result)
735 _HOOK_DITF_(get_user_bus, ditf, result);
739 struct sd_bus *afb_hook_ditf_get_system_bus(const struct afb_ditf *ditf, struct sd_bus *result)
741 _HOOK_DITF_(get_system_bus, ditf, result);
745 void afb_hook_ditf_vverbose(const struct afb_ditf *ditf, int level, const char *file, int line, const char *function, const char *fmt, va_list args)
747 _HOOK_DITF_(vverbose, ditf, level, file, line, function, fmt, args);
750 struct afb_event afb_hook_ditf_event_make(const struct afb_ditf *ditf, const char *name, struct afb_event result)
752 _HOOK_DITF_(event_make, ditf, name, result);
756 int afb_hook_ditf_rootdir_get_fd(const struct afb_ditf *ditf, int result)
758 _HOOK_DITF_(rootdir_get_fd, ditf, result);
762 int afb_hook_ditf_rootdir_open_locale(const struct afb_ditf *ditf, const char *filename, int flags, const char *locale, int result)
764 _HOOK_DITF_(rootdir_open_locale, ditf, filename, flags, locale, result);
768 int afb_hook_ditf_queue_job(const struct afb_ditf *ditf, void (*callback)(int signum, void *arg), void *argument, void *group, int timeout, int result)
770 _HOOK_DITF_(queue_job, ditf, callback, argument, group, timeout, result);
774 void afb_hook_ditf_unstore_req(const struct afb_ditf *ditf, struct afb_stored_req *sreq)
776 _HOOK_DITF_(unstore_req, ditf, sreq);
779 void afb_hook_ditf_require_api(const struct afb_ditf *ditf, const char *name, int initialized)
781 _HOOK_DITF_(require_api, ditf, name, initialized);
784 int afb_hook_ditf_require_api_result(const struct afb_ditf *ditf, const char *name, int initialized, int result)
786 _HOOK_DITF_(require_api_result, ditf, name, initialized, result);
790 /******************************************************************************
791 * section: hooking ditf
792 *****************************************************************************/
794 int afb_hook_flags_ditf(const char *api)
797 struct afb_hook_ditf *hook;
799 pthread_rwlock_rdlock(&rwlock);
801 hook = list_of_ditf_hooks;
803 if (!api || !hook->api || !strcasecmp(hook->api, api))
804 flags |= hook->flags;
807 pthread_rwlock_unlock(&rwlock);
811 struct afb_hook_ditf *afb_hook_create_ditf(const char *api, int flags, struct afb_hook_ditf_itf *itf, void *closure)
813 struct afb_hook_ditf *hook;
815 /* alloc the result */
816 hook = calloc(1, sizeof *hook);
820 /* get a copy of the names */
821 hook->api = api ? strdup(api) : NULL;
822 if (api && !hook->api) {
827 /* initialise the rest */
830 hook->itf = itf ? itf : &hook_ditf_default_itf;
831 hook->closure = closure;
833 /* record the hook */
834 pthread_rwlock_wrlock(&rwlock);
835 hook->next = list_of_ditf_hooks;
836 list_of_ditf_hooks = hook;
837 pthread_rwlock_unlock(&rwlock);
843 struct afb_hook_ditf *afb_hook_addref_ditf(struct afb_hook_ditf *hook)
845 pthread_rwlock_wrlock(&rwlock);
847 pthread_rwlock_unlock(&rwlock);
851 void afb_hook_unref_ditf(struct afb_hook_ditf *hook)
853 struct afb_hook_ditf **prv;
856 pthread_rwlock_wrlock(&rwlock);
857 if (--hook->refcount)
861 prv = &list_of_ditf_hooks;
862 while (*prv && *prv != hook)
867 pthread_rwlock_unlock(&rwlock);
876 /******************************************************************************
877 * section: default callbacks for tracing service interface (svc)
878 *****************************************************************************/
880 static void _hook_svc_(const struct afb_svc *svc, const char *format, ...)
883 va_start(ap, format);
884 _hook_("svc-%s", format, ap, svc->api);
888 static void hook_svc_start_before_default_cb(void *closure, const struct afb_svc *svc)
890 _hook_svc_(svc, "start.before");
893 static void hook_svc_start_after_default_cb(void *closure, const struct afb_svc *svc, int status)
895 _hook_svc_(svc, "start.after -> %d", status);
898 static void hook_svc_on_event_before_default_cb(void *closure, const struct afb_svc *svc, const char *event, int eventid, struct json_object *object)
900 _hook_svc_(svc, "on_event.before(%s, %d, %s)", event, eventid, json_object_to_json_string(object));
903 static void hook_svc_on_event_after_default_cb(void *closure, const struct afb_svc *svc, const char *event, int eventid, struct json_object *object)
905 _hook_svc_(svc, "on_event.after(%s, %d, %s)", event, eventid, json_object_to_json_string(object));
908 static void hook_svc_call_default_cb(void *closure, const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args)
910 _hook_svc_(svc, "call(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
913 static void hook_svc_call_result_default_cb(void *closure, const struct afb_svc *svc, int status, struct json_object *result)
915 _hook_svc_(svc, " ...call... -> %d: %s", status, json_object_to_json_string(result));
918 static void hook_svc_callsync_default_cb(void *closure, const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args)
920 _hook_svc_(svc, "callsync(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
923 static void hook_svc_callsync_result_default_cb(void *closure, const struct afb_svc *svc, int status, struct json_object *result)
925 _hook_svc_(svc, " ...callsync... -> %d: %s", status, json_object_to_json_string(result));
928 static struct afb_hook_svc_itf hook_svc_default_itf = {
929 .hook_svc_start_before = hook_svc_start_before_default_cb,
930 .hook_svc_start_after = hook_svc_start_after_default_cb,
931 .hook_svc_on_event_before = hook_svc_on_event_before_default_cb,
932 .hook_svc_on_event_after = hook_svc_on_event_after_default_cb,
933 .hook_svc_call = hook_svc_call_default_cb,
934 .hook_svc_call_result = hook_svc_call_result_default_cb,
935 .hook_svc_callsync = hook_svc_callsync_default_cb,
936 .hook_svc_callsync_result = hook_svc_callsync_result_default_cb
939 /******************************************************************************
940 * section: hooks for tracing service interface (svc)
941 *****************************************************************************/
943 #define _HOOK_SVC_(what,...) \
944 struct afb_hook_svc *hook; \
945 pthread_rwlock_rdlock(&rwlock); \
946 hook = list_of_svc_hooks; \
948 if (hook->itf->hook_svc_##what \
949 && (hook->flags & afb_hook_flag_svc_##what) != 0 \
950 && (!hook->api || !strcasecmp(hook->api, svc->api))) { \
951 hook->itf->hook_svc_##what(hook->closure, __VA_ARGS__); \
955 pthread_rwlock_unlock(&rwlock);
957 void afb_hook_svc_start_before(const struct afb_svc *svc)
959 _HOOK_SVC_(start_before, svc);
962 int afb_hook_svc_start_after(const struct afb_svc *svc, int status)
964 _HOOK_SVC_(start_after, svc, status);
968 void afb_hook_svc_on_event_before(const struct afb_svc *svc, const char *event, int eventid, struct json_object *object)
970 _HOOK_SVC_(on_event_before, svc, event, eventid, object);
973 void afb_hook_svc_on_event_after(const struct afb_svc *svc, const char *event, int eventid, struct json_object *object)
975 _HOOK_SVC_(on_event_after, svc, event, eventid, object);
978 void afb_hook_svc_call(const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args)
980 _HOOK_SVC_(call, svc, api, verb, args);
983 void afb_hook_svc_call_result(const struct afb_svc *svc, int status, struct json_object *result)
985 _HOOK_SVC_(call_result, svc, status, result);
988 void afb_hook_svc_callsync(const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args)
990 _HOOK_SVC_(callsync, svc, api, verb, args);
993 int afb_hook_svc_callsync_result(const struct afb_svc *svc, int status, struct json_object *result)
995 _HOOK_SVC_(callsync_result, svc, status, result);
999 /******************************************************************************
1000 * section: hooking services (svc)
1001 *****************************************************************************/
1003 int afb_hook_flags_svc(const char *api)
1006 struct afb_hook_svc *hook;
1008 pthread_rwlock_rdlock(&rwlock);
1010 hook = list_of_svc_hooks;
1012 if (!api || !hook->api || !strcasecmp(hook->api, api))
1013 flags |= hook->flags;
1016 pthread_rwlock_unlock(&rwlock);
1020 struct afb_hook_svc *afb_hook_create_svc(const char *api, int flags, struct afb_hook_svc_itf *itf, void *closure)
1022 struct afb_hook_svc *hook;
1024 /* alloc the result */
1025 hook = calloc(1, sizeof *hook);
1029 /* get a copy of the names */
1030 hook->api = api ? strdup(api) : NULL;
1031 if (api && !hook->api) {
1036 /* initialise the rest */
1038 hook->flags = flags;
1039 hook->itf = itf ? itf : &hook_svc_default_itf;
1040 hook->closure = closure;
1042 /* record the hook */
1043 pthread_rwlock_wrlock(&rwlock);
1044 hook->next = list_of_svc_hooks;
1045 list_of_svc_hooks = hook;
1046 pthread_rwlock_unlock(&rwlock);
1052 struct afb_hook_svc *afb_hook_addref_svc(struct afb_hook_svc *hook)
1054 pthread_rwlock_wrlock(&rwlock);
1056 pthread_rwlock_unlock(&rwlock);
1060 void afb_hook_unref_svc(struct afb_hook_svc *hook)
1062 struct afb_hook_svc **prv;
1065 pthread_rwlock_wrlock(&rwlock);
1066 if (--hook->refcount)
1070 prv = &list_of_svc_hooks;
1071 while (*prv && *prv != hook)
1072 prv = &(*prv)->next;
1076 pthread_rwlock_unlock(&rwlock);
1085 /******************************************************************************
1086 * section: default callbacks for tracing service interface (evt)
1087 *****************************************************************************/
1089 static void _hook_evt_(const char *evt, int id, const char *format, ...)
1092 va_start(ap, format);
1093 _hook_("evt-%s:%d", format, ap, evt, id);
1097 static void hook_evt_create_default_cb(void *closure, const char *evt, int id)
1099 _hook_evt_(evt, id, "create");
1102 static void hook_evt_push_before_default_cb(void *closure, const char *evt, int id, struct json_object *obj)
1104 _hook_evt_(evt, id, "push.before(%s)", json_object_to_json_string(obj));
1108 static void hook_evt_push_after_default_cb(void *closure, const char *evt, int id, struct json_object *obj, int result)
1110 _hook_evt_(evt, id, "push.after(%s) -> %d", json_object_to_json_string(obj), result);
1113 static void hook_evt_broadcast_before_default_cb(void *closure, const char *evt, int id, struct json_object *obj)
1115 _hook_evt_(evt, id, "broadcast.before(%s)", json_object_to_json_string(obj));
1118 static void hook_evt_broadcast_after_default_cb(void *closure, const char *evt, int id, struct json_object *obj, int result)
1120 _hook_evt_(evt, id, "broadcast.after(%s) -> %d", json_object_to_json_string(obj), result);
1123 static void hook_evt_name_default_cb(void *closure, const char *evt, int id)
1125 _hook_evt_(evt, id, "name");
1128 static void hook_evt_drop_default_cb(void *closure, const char *evt, int id)
1130 _hook_evt_(evt, id, "drop");
1133 static struct afb_hook_evt_itf hook_evt_default_itf = {
1134 .hook_evt_create = hook_evt_create_default_cb,
1135 .hook_evt_push_before = hook_evt_push_before_default_cb,
1136 .hook_evt_push_after = hook_evt_push_after_default_cb,
1137 .hook_evt_broadcast_before = hook_evt_broadcast_before_default_cb,
1138 .hook_evt_broadcast_after = hook_evt_broadcast_after_default_cb,
1139 .hook_evt_name = hook_evt_name_default_cb,
1140 .hook_evt_drop = hook_evt_drop_default_cb
1143 /******************************************************************************
1144 * section: hooks for tracing service interface (evt)
1145 *****************************************************************************/
1147 #define _HOOK_EVT_(what,...) \
1148 struct afb_hook_evt *hook; \
1149 pthread_rwlock_rdlock(&rwlock); \
1150 hook = list_of_evt_hooks; \
1152 if (hook->itf->hook_evt_##what \
1153 && (hook->flags & afb_hook_flag_evt_##what) != 0 \
1154 && (!hook->pattern || !fnmatch(hook->pattern, evt, FNM_CASEFOLD))) { \
1155 hook->itf->hook_evt_##what(hook->closure, __VA_ARGS__); \
1157 hook = hook->next; \
1159 pthread_rwlock_unlock(&rwlock);
1161 void afb_hook_evt_create(const char *evt, int id)
1163 _HOOK_EVT_(create, evt, id);
1166 void afb_hook_evt_push_before(const char *evt, int id, struct json_object *obj)
1168 _HOOK_EVT_(push_before, evt, id, obj);
1171 int afb_hook_evt_push_after(const char *evt, int id, struct json_object *obj, int result)
1173 _HOOK_EVT_(push_after, evt, id, obj, result);
1177 void afb_hook_evt_broadcast_before(const char *evt, int id, struct json_object *obj)
1179 _HOOK_EVT_(broadcast_before, evt, id, obj);
1182 int afb_hook_evt_broadcast_after(const char *evt, int id, struct json_object *obj, int result)
1184 _HOOK_EVT_(broadcast_after, evt, id, obj, result);
1188 void afb_hook_evt_name(const char *evt, int id)
1190 _HOOK_EVT_(name, evt, id);
1193 void afb_hook_evt_drop(const char *evt, int id)
1195 _HOOK_EVT_(drop, evt, id);
1198 /******************************************************************************
1199 * section: hooking services (evt)
1200 *****************************************************************************/
1202 int afb_hook_flags_evt(const char *name)
1205 struct afb_hook_evt *hook;
1207 pthread_rwlock_rdlock(&rwlock);
1209 hook = list_of_evt_hooks;
1211 if (!name || !hook->pattern || !fnmatch(hook->pattern, name, FNM_CASEFOLD))
1212 flags |= hook->flags;
1215 pthread_rwlock_unlock(&rwlock);
1219 struct afb_hook_evt *afb_hook_create_evt(const char *pattern, int flags, struct afb_hook_evt_itf *itf, void *closure)
1221 struct afb_hook_evt *hook;
1223 /* alloc the result */
1224 hook = calloc(1, sizeof *hook);
1228 /* get a copy of the names */
1229 hook->pattern = pattern ? strdup(pattern) : NULL;
1230 if (pattern && !hook->pattern) {
1235 /* initialise the rest */
1237 hook->flags = flags;
1238 hook->itf = itf ? itf : &hook_evt_default_itf;
1239 hook->closure = closure;
1241 /* record the hook */
1242 pthread_rwlock_wrlock(&rwlock);
1243 hook->next = list_of_evt_hooks;
1244 list_of_evt_hooks = hook;
1245 pthread_rwlock_unlock(&rwlock);
1251 struct afb_hook_evt *afb_hook_addref_evt(struct afb_hook_evt *hook)
1253 pthread_rwlock_wrlock(&rwlock);
1255 pthread_rwlock_unlock(&rwlock);
1259 void afb_hook_unref_evt(struct afb_hook_evt *hook)
1261 struct afb_hook_evt **prv;
1264 pthread_rwlock_wrlock(&rwlock);
1265 if (--hook->refcount)
1269 prv = &list_of_evt_hooks;
1270 while (*prv && *prv != hook)
1271 prv = &(*prv)->next;
1275 pthread_rwlock_unlock(&rwlock);
1278 free(hook->pattern);