X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fafb-hook.c;h=664ef125126692309f48eac801debee422d965b6;hb=5f2475376640b19c95c254cee2e0a15dbd9fa43c;hp=05b04aec62819afa414fc75de9c4ee2cc3c554a4;hpb=bdff72f45e1d02f596595f6229d5bccf7c0827c2;p=src%2Fapp-framework-binder.git diff --git a/src/afb-hook.c b/src/afb-hook.c index 05b04aec..664ef125 100644 --- a/src/afb-hook.c +++ b/src/afb-hook.c @@ -24,6 +24,7 @@ #include #include #include +#include #include @@ -90,6 +91,17 @@ struct afb_hook_evt { void *closure; /**< closure for callbacks */ }; +/** + * Definition of a hook for global + */ +struct afb_hook_global { + struct afb_hook_global *next; /**< next hook */ + unsigned refcount; /**< reference count */ + unsigned flags; /**< hook flags */ + struct afb_hook_global_itf *itf; /**< interface of hook */ + void *closure; /**< closure for callbacks */ +}; + /* synchronisation across threads */ static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER; @@ -105,11 +117,26 @@ static struct afb_hook_svc *list_of_svc_hooks = NULL; /* list of hooks for evt */ static struct afb_hook_evt *list_of_evt_hooks = NULL; +/* list of hooks for global */ +static struct afb_hook_global *list_of_global_hooks = NULL; + +/* hook id */ +static unsigned next_hookid = 0; + +/****************************************************************************** + * section: hook id + *****************************************************************************/ +static void init_hookid(struct afb_hookid *hookid) +{ + hookid->id = __atomic_add_fetch(&next_hookid, 1, __ATOMIC_RELAXED); + clock_gettime(CLOCK_MONOTONIC, &hookid->time); +} + /****************************************************************************** * section: default callbacks for tracing requests *****************************************************************************/ -static char *_pbuf_(const char *fmt, va_list args, char **palloc, char *sbuf, size_t szsbuf) +static char *_pbuf_(const char *fmt, va_list args, char **palloc, char *sbuf, size_t szsbuf, size_t *outlen) { int rc; va_list cp; @@ -125,18 +152,21 @@ static char *_pbuf_(const char *fmt, va_list args, char **palloc, char *sbuf, si sbuf = *palloc; } va_end(cp); + if (rc >= 0 && outlen) + *outlen = (size_t)rc; return sbuf; } +#if 0 /* old behaviour: use NOTICE */ static void _hook_(const char *fmt1, const char *fmt2, va_list arg2, ...) { char *tag, *data, *mem1, *mem2, buf1[256], buf2[2000]; va_list arg1; - data = _pbuf_(fmt2, arg2, &mem2, buf2, sizeof buf2); + data = _pbuf_(fmt2, arg2, &mem2, buf2, sizeof buf2, NULL); va_start(arg1, arg2); - tag = _pbuf_(fmt1, arg1, &mem1, buf1, sizeof buf1); + tag = _pbuf_(fmt1, arg1, &mem1, buf1, sizeof buf1, NULL); va_end(arg1); NOTICE("[HOOK %s] %s", tag, data); @@ -144,6 +174,35 @@ static void _hook_(const char *fmt1, const char *fmt2, va_list arg2, ...) free(mem1); free(mem2); } +#else /* new behaviour: emits directly to stderr */ +static void _hook_(const char *fmt1, const char *fmt2, va_list arg2, ...) +{ + static const char chars[] = "[HOOK ] \n"; + char *mem1, *mem2, buf1[256], buf2[2000]; + struct iovec iov[5]; + va_list arg1; + + iov[0].iov_base = (void*)&chars[0]; + iov[0].iov_len = 6; + + va_start(arg1, arg2); + iov[1].iov_base = _pbuf_(fmt1, arg1, &mem1, buf1, sizeof buf1, &iov[1].iov_len); + va_end(arg1); + + iov[2].iov_base = (void*)&chars[6]; + iov[2].iov_len = 2; + + iov[3].iov_base = _pbuf_(fmt2, arg2, &mem2, buf2, sizeof buf2, &iov[3].iov_len); + + iov[4].iov_base = (void*)&chars[8]; + iov[4].iov_len = 1; + + writev(2, iov, 5); + + free(mem1); + free(mem2); +} +#endif static void _hook_xreq_(const struct afb_xreq *xreq, const char *format, ...) { @@ -153,7 +212,7 @@ static void _hook_xreq_(const struct afb_xreq *xreq, const char *format, ...) va_end(ap); } -static void hook_xreq_begin_default_cb(void * closure, const struct afb_xreq *xreq) +static void hook_xreq_begin_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq) { if (!xreq->cred) _hook_xreq_(xreq, "BEGIN"); @@ -168,92 +227,92 @@ static void hook_xreq_begin_default_cb(void * closure, const struct afb_xreq *xr ); } -static void hook_xreq_end_default_cb(void * closure, const struct afb_xreq *xreq) +static void hook_xreq_end_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq) { _hook_xreq_(xreq, "END"); } -static void hook_xreq_json_default_cb(void * closure, const struct afb_xreq *xreq, struct json_object *obj) +static void hook_xreq_json_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct json_object *obj) { _hook_xreq_(xreq, "json() -> %s", json_object_to_json_string(obj)); } -static void hook_xreq_get_default_cb(void * closure, const struct afb_xreq *xreq, const char *name, struct afb_arg arg) +static void hook_xreq_get_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *name, struct afb_arg arg) { _hook_xreq_(xreq, "get(%s) -> { name: %s, value: %s, path: %s }", name, arg.name, arg.value, arg.path); } -static void hook_xreq_success_default_cb(void * closure, const struct afb_xreq *xreq, struct json_object *obj, const char *info) +static void hook_xreq_success_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct json_object *obj, const char *info) { _hook_xreq_(xreq, "success(%s, %s)", json_object_to_json_string(obj), info); } -static void hook_xreq_fail_default_cb(void * closure, const struct afb_xreq *xreq, const char *status, const char *info) +static void hook_xreq_fail_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *status, const char *info) { _hook_xreq_(xreq, "fail(%s, %s)", status, info); } -static void hook_xreq_context_get_default_cb(void * closure, const struct afb_xreq *xreq, void *value) +static void hook_xreq_context_get_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, void *value) { _hook_xreq_(xreq, "context_get() -> %p", value); } -static void hook_xreq_context_set_default_cb(void * closure, const struct afb_xreq *xreq, void *value, void (*free_value)(void*)) +static void hook_xreq_context_set_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, void *value, void (*free_value)(void*)) { _hook_xreq_(xreq, "context_set(%p, %p)", value, free_value); } -static void hook_xreq_addref_default_cb(void * closure, const struct afb_xreq *xreq) +static void hook_xreq_addref_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq) { _hook_xreq_(xreq, "addref()"); } -static void hook_xreq_unref_default_cb(void * closure, const struct afb_xreq *xreq) +static void hook_xreq_unref_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq) { _hook_xreq_(xreq, "unref()"); } -static void hook_xreq_session_close_default_cb(void * closure, const struct afb_xreq *xreq) +static void hook_xreq_session_close_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq) { _hook_xreq_(xreq, "session_close()"); } -static void hook_xreq_session_set_LOA_default_cb(void * closure, const struct afb_xreq *xreq, unsigned level, int result) +static void hook_xreq_session_set_LOA_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, unsigned level, int result) { _hook_xreq_(xreq, "session_set_LOA(%u) -> %d", level, result); } -static void hook_xreq_subscribe_default_cb(void * closure, const struct afb_xreq *xreq, struct afb_event event, int result) +static void hook_xreq_subscribe_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct afb_event event, int result) { _hook_xreq_(xreq, "subscribe(%s:%d) -> %d", afb_evt_event_name(event), afb_evt_event_id(event), result); } -static void hook_xreq_unsubscribe_default_cb(void * closure, const struct afb_xreq *xreq, struct afb_event event, int result) +static void hook_xreq_unsubscribe_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct afb_event event, int result) { _hook_xreq_(xreq, "unsubscribe(%s:%d) -> %d", afb_evt_event_name(event), afb_evt_event_id(event), result); } -static void hook_xreq_subcall_default_cb(void * closure, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args) +static void hook_xreq_subcall_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args) { _hook_xreq_(xreq, "subcall(%s/%s, %s) ...", api, verb, json_object_to_json_string(args)); } -static void hook_xreq_subcall_result_default_cb(void * closure, const struct afb_xreq *xreq, int status, struct json_object *result) +static void hook_xreq_subcall_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int status, struct json_object *result) { _hook_xreq_(xreq, " ...subcall... -> %d: %s", status, json_object_to_json_string(result)); } -static void hook_xreq_subcallsync_default_cb(void * closure, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args) +static void hook_xreq_subcallsync_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args) { _hook_xreq_(xreq, "subcallsync(%s/%s, %s) ...", api, verb, json_object_to_json_string(args)); } -static void hook_xreq_subcallsync_result_default_cb(void * closure, const struct afb_xreq *xreq, int status, struct json_object *result) +static void hook_xreq_subcallsync_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int status, struct json_object *result) { _hook_xreq_(xreq, " ...subcallsync... -> %d: %s", status, json_object_to_json_string(result)); } -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) +static void hook_xreq_vverbose_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int level, const char *file, int line, const char *func, const char *fmt, va_list args) { int len; char *msg; @@ -271,26 +330,31 @@ static void hook_xreq_vverbose_default_cb(void * closure, const struct afb_xreq } } -static void hook_xreq_store_default_cb(void * closure, const struct afb_xreq *xreq, struct afb_stored_req *sreq) +static void hook_xreq_store_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct afb_stored_req *sreq) { _hook_xreq_(xreq, "store() -> %p", sreq); } -static void hook_xreq_unstore_default_cb(void * closure, const struct afb_xreq *xreq) +static void hook_xreq_unstore_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq) { _hook_xreq_(xreq, "unstore()"); } -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) +static void hook_xreq_subcall_req_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args) { _hook_xreq_(xreq, "subcall_req(%s/%s, %s) ...", api, verb, json_object_to_json_string(args)); } -static void hook_xreq_subcall_req_result_default_cb(void * closure, const struct afb_xreq *xreq, int status, struct json_object *result) +static void hook_xreq_subcall_req_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int status, struct json_object *result) { _hook_xreq_(xreq, " ...subcall_req... -> %d: %s", status, json_object_to_json_string(result)); } +static void hook_xreq_has_permission_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *permission, int result) +{ + _hook_xreq_(xreq, "has_permission(%s) -> %d", permission, result); +} + static struct afb_hook_xreq_itf hook_xreq_default_itf = { .hook_xreq_begin = hook_xreq_begin_default_cb, .hook_xreq_end = hook_xreq_end_default_cb, @@ -314,7 +378,8 @@ static struct afb_hook_xreq_itf hook_xreq_default_itf = { .hook_xreq_store = hook_xreq_store_default_cb, .hook_xreq_unstore = hook_xreq_unstore_default_cb, .hook_xreq_subcall_req = hook_xreq_subcall_req_default_cb, - .hook_xreq_subcall_req_result = hook_xreq_subcall_req_result_default_cb + .hook_xreq_subcall_req_result = hook_xreq_subcall_req_result_default_cb, + .hook_xreq_has_permission = hook_xreq_has_permission_default_cb }; /****************************************************************************** @@ -323,7 +388,9 @@ static struct afb_hook_xreq_itf hook_xreq_default_itf = { #define _HOOK_XREQ_(what,...) \ struct afb_hook_xreq *hook; \ + struct afb_hookid hookid; \ pthread_rwlock_rdlock(&rwlock); \ + init_hookid(&hookid); \ hook = list_of_xreq_hooks; \ while (hook) { \ if (hook->itf->hook_xreq_##what \ @@ -331,7 +398,7 @@ static struct afb_hook_xreq_itf hook_xreq_default_itf = { && (!hook->session || hook->session == xreq->context.session) \ && (!hook->api || !strcasecmp(hook->api, xreq->api)) \ && (!hook->verb || !strcasecmp(hook->verb, xreq->verb))) { \ - hook->itf->hook_xreq_##what(hook->closure, __VA_ARGS__); \ + hook->itf->hook_xreq_##what(hook->closure, &hookid, __VA_ARGS__); \ } \ hook = hook->next; \ } \ @@ -460,6 +527,12 @@ void afb_hook_xreq_subcall_req_result(const struct afb_xreq *xreq, int status, s _HOOK_XREQ_(subcall_req_result, xreq, status, result); } +int afb_hook_xreq_has_permission(const struct afb_xreq *xreq, const char *permission, int result) +{ + _HOOK_XREQ_(has_permission, xreq, permission, result); + return result; +} + /****************************************************************************** * section: hooking xreqs *****************************************************************************/ @@ -585,32 +658,32 @@ static void _hook_ditf_(const struct afb_ditf *ditf, const char *format, ...) va_end(ap); } -static void hook_ditf_event_broadcast_before_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct json_object *object) +static void hook_ditf_event_broadcast_before_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, const char *name, struct json_object *object) { _hook_ditf_(ditf, "event_broadcast.before(%s, %s)....", name, json_object_to_json_string(object)); } -static void hook_ditf_event_broadcast_after_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct json_object *object, int result) +static void hook_ditf_event_broadcast_after_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, const char *name, struct json_object *object, int result) { _hook_ditf_(ditf, "event_broadcast.after(%s, %s) -> %d", name, json_object_to_json_string(object), result); } -static void hook_ditf_get_event_loop_cb(void *closure, const struct afb_ditf *ditf, struct sd_event *result) +static void hook_ditf_get_event_loop_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, struct sd_event *result) { _hook_ditf_(ditf, "get_event_loop() -> %p", result); } -static void hook_ditf_get_user_bus_cb(void *closure, const struct afb_ditf *ditf, struct sd_bus *result) +static void hook_ditf_get_user_bus_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, struct sd_bus *result) { _hook_ditf_(ditf, "get_user_bus() -> %p", result); } -static void hook_ditf_get_system_bus_cb(void *closure, const struct afb_ditf *ditf, struct sd_bus *result) +static void hook_ditf_get_system_bus_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, struct sd_bus *result) { _hook_ditf_(ditf, "get_system_bus() -> %p", result); } -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) +static void hook_ditf_vverbose_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, int level, const char *file, int line, const char *function, const char *fmt, va_list args) { int len; char *msg; @@ -628,12 +701,12 @@ static void hook_ditf_vverbose_cb(void*closure, const struct afb_ditf *ditf, int } } -static void hook_ditf_event_make_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct afb_event result) +static void hook_ditf_event_make_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, const char *name, struct afb_event result) { _hook_ditf_(ditf, "event_make(%s) -> %s:%d", name, afb_evt_event_name(result), afb_evt_event_id(result)); } -static void hook_ditf_rootdir_get_fd_cb(void *closure, const struct afb_ditf *ditf, int result) +static void hook_ditf_rootdir_get_fd_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, int result) { char path[PATH_MAX]; if (result < 0) @@ -645,7 +718,7 @@ static void hook_ditf_rootdir_get_fd_cb(void *closure, const struct afb_ditf *di } } -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) +static void hook_ditf_rootdir_open_locale_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, const char *filename, int flags, const char *locale, int result) { char path[PATH_MAX]; if (!locale) @@ -659,22 +732,22 @@ static void hook_ditf_rootdir_open_locale_cb(void *closure, const struct afb_dit } } -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) +static void hook_ditf_queue_job_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, void (*callback)(int signum, void *arg), void *argument, void *group, int timeout, int result) { _hook_ditf_(ditf, "queue_job(%p, %p, %p, %d) -> %d", callback, argument, group, timeout, result); } -static void hook_ditf_unstore_req_cb(void * closure, const struct afb_ditf *ditf, struct afb_stored_req *sreq) +static void hook_ditf_unstore_req_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, struct afb_stored_req *sreq) { _hook_ditf_(ditf, "unstore_req(%p)", sreq); } -static void hook_ditf_require_api_cb(void *closure, const struct afb_ditf *ditf, const char *name, int initialized) +static void hook_ditf_require_api_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, const char *name, int initialized) { _hook_ditf_(ditf, "require_api(%s, %d)...", name, initialized); } -static void hook_ditf_require_api_result_cb(void *closure, const struct afb_ditf *ditf, const char *name, int initialized, int result) +static void hook_ditf_require_api_result_cb(void *closure, const struct afb_hookid *hookid, const struct afb_ditf *ditf, const char *name, int initialized, int result) { _hook_ditf_(ditf, "...require_api(%s, %d) -> %d", name, initialized, result); } @@ -701,13 +774,15 @@ static struct afb_hook_ditf_itf hook_ditf_default_itf = { #define _HOOK_DITF_(what,...) \ struct afb_hook_ditf *hook; \ + struct afb_hookid hookid; \ pthread_rwlock_rdlock(&rwlock); \ + init_hookid(&hookid); \ hook = list_of_ditf_hooks; \ while (hook) { \ if (hook->itf->hook_ditf_##what \ && (hook->flags & afb_hook_flag_ditf_##what) != 0 \ && (!hook->api || !strcasecmp(hook->api, ditf->api))) { \ - hook->itf->hook_ditf_##what(hook->closure, __VA_ARGS__); \ + hook->itf->hook_ditf_##what(hook->closure, &hookid, __VA_ARGS__); \ } \ hook = hook->next; \ } \ @@ -885,42 +960,42 @@ static void _hook_svc_(const struct afb_svc *svc, const char *format, ...) va_end(ap); } -static void hook_svc_start_before_default_cb(void *closure, const struct afb_svc *svc) +static void hook_svc_start_before_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc) { _hook_svc_(svc, "start.before"); } -static void hook_svc_start_after_default_cb(void *closure, const struct afb_svc *svc, int status) +static void hook_svc_start_after_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, int status) { _hook_svc_(svc, "start.after -> %d", status); } -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) +static void hook_svc_on_event_before_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, const char *event, int eventid, struct json_object *object) { _hook_svc_(svc, "on_event.before(%s, %d, %s)", event, eventid, json_object_to_json_string(object)); } -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) +static void hook_svc_on_event_after_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, const char *event, int eventid, struct json_object *object) { _hook_svc_(svc, "on_event.after(%s, %d, %s)", event, eventid, json_object_to_json_string(object)); } -static void hook_svc_call_default_cb(void *closure, const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args) +static void hook_svc_call_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args) { _hook_svc_(svc, "call(%s/%s, %s) ...", api, verb, json_object_to_json_string(args)); } -static void hook_svc_call_result_default_cb(void *closure, const struct afb_svc *svc, int status, struct json_object *result) +static void hook_svc_call_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, int status, struct json_object *result) { _hook_svc_(svc, " ...call... -> %d: %s", status, json_object_to_json_string(result)); } -static void hook_svc_callsync_default_cb(void *closure, const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args) +static void hook_svc_callsync_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args) { _hook_svc_(svc, "callsync(%s/%s, %s) ...", api, verb, json_object_to_json_string(args)); } -static void hook_svc_callsync_result_default_cb(void *closure, const struct afb_svc *svc, int status, struct json_object *result) +static void hook_svc_callsync_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_svc *svc, int status, struct json_object *result) { _hook_svc_(svc, " ...callsync... -> %d: %s", status, json_object_to_json_string(result)); } @@ -942,13 +1017,15 @@ static struct afb_hook_svc_itf hook_svc_default_itf = { #define _HOOK_SVC_(what,...) \ struct afb_hook_svc *hook; \ + struct afb_hookid hookid; \ pthread_rwlock_rdlock(&rwlock); \ + init_hookid(&hookid); \ hook = list_of_svc_hooks; \ while (hook) { \ if (hook->itf->hook_svc_##what \ && (hook->flags & afb_hook_flag_svc_##what) != 0 \ && (!hook->api || !strcasecmp(hook->api, svc->api))) { \ - hook->itf->hook_svc_##what(hook->closure, __VA_ARGS__); \ + hook->itf->hook_svc_##what(hook->closure, &hookid, __VA_ARGS__); \ } \ hook = hook->next; \ } \ @@ -1094,38 +1171,38 @@ static void _hook_evt_(const char *evt, int id, const char *format, ...) va_end(ap); } -static void hook_evt_create_default_cb(void *closure, const char *evt, int id) +static void hook_evt_create_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id) { _hook_evt_(evt, id, "create"); } -static void hook_evt_push_before_default_cb(void *closure, const char *evt, int id, struct json_object *obj) +static void hook_evt_push_before_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj) { _hook_evt_(evt, id, "push.before(%s)", json_object_to_json_string(obj)); } -static void hook_evt_push_after_default_cb(void *closure, const char *evt, int id, struct json_object *obj, int result) +static void hook_evt_push_after_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj, int result) { _hook_evt_(evt, id, "push.after(%s) -> %d", json_object_to_json_string(obj), result); } -static void hook_evt_broadcast_before_default_cb(void *closure, const char *evt, int id, struct json_object *obj) +static void hook_evt_broadcast_before_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj) { _hook_evt_(evt, id, "broadcast.before(%s)", json_object_to_json_string(obj)); } -static void hook_evt_broadcast_after_default_cb(void *closure, const char *evt, int id, struct json_object *obj, int result) +static void hook_evt_broadcast_after_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj, int result) { _hook_evt_(evt, id, "broadcast.after(%s) -> %d", json_object_to_json_string(obj), result); } -static void hook_evt_name_default_cb(void *closure, const char *evt, int id) +static void hook_evt_name_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id) { _hook_evt_(evt, id, "name"); } -static void hook_evt_drop_default_cb(void *closure, const char *evt, int id) +static void hook_evt_drop_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id) { _hook_evt_(evt, id, "drop"); } @@ -1141,18 +1218,20 @@ static struct afb_hook_evt_itf hook_evt_default_itf = { }; /****************************************************************************** - * section: hooks for tracing service interface (evt) + * section: hooks for tracing events interface (evt) *****************************************************************************/ #define _HOOK_EVT_(what,...) \ struct afb_hook_evt *hook; \ + struct afb_hookid hookid; \ pthread_rwlock_rdlock(&rwlock); \ + init_hookid(&hookid); \ hook = list_of_evt_hooks; \ while (hook) { \ if (hook->itf->hook_evt_##what \ && (hook->flags & afb_hook_flag_evt_##what) != 0 \ && (!hook->pattern || !fnmatch(hook->pattern, evt, FNM_CASEFOLD))) { \ - hook->itf->hook_evt_##what(hook->closure, __VA_ARGS__); \ + hook->itf->hook_evt_##what(hook->closure, &hookid, __VA_ARGS__); \ } \ hook = hook->next; \ } \ @@ -1280,3 +1359,144 @@ void afb_hook_unref_evt(struct afb_hook_evt *hook) } } } + +/****************************************************************************** + * section: default callbacks for globals (global) + *****************************************************************************/ + +static void _hook_global_(const char *format, ...) +{ + va_list ap; + va_start(ap, format); + _hook_("global", format, ap); + va_end(ap); +} + +static void hook_global_vverbose_default_cb(void *closure, const struct afb_hookid *hookid, int level, const char *file, int line, const char *func, const char *fmt, va_list args) +{ + int len; + char *msg; + va_list ap; + + va_copy(ap, args); + len = vasprintf(&msg, fmt, ap); + va_end(ap); + + if (len < 0) + _hook_global_("vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, func, fmt); + else { + _hook_global_("vverbose(%d, %s, %d, %s) -> %s", level, file, line, func, msg); + free(msg); + } +} + +static struct afb_hook_global_itf hook_global_default_itf = { + .hook_global_vverbose = hook_global_vverbose_default_cb +}; + +/****************************************************************************** + * section: hooks for tracing globals (global) + *****************************************************************************/ + +#define _HOOK_GLOBAL_(what,...) \ + struct afb_hook_global *hook; \ + struct afb_hookid hookid; \ + pthread_rwlock_rdlock(&rwlock); \ + init_hookid(&hookid); \ + hook = list_of_global_hooks; \ + while (hook) { \ + if (hook->itf->hook_global_##what \ + && (hook->flags & afb_hook_flag_global_##what) != 0) { \ + hook->itf->hook_global_##what(hook->closure, &hookid, __VA_ARGS__); \ + } \ + hook = hook->next; \ + } \ + pthread_rwlock_unlock(&rwlock); + +static void afb_hook_global_vverbose(int level, const char *file, int line, const char *func, const char *fmt, va_list args) +{ + _HOOK_GLOBAL_(vverbose, level, file ?: "?", line, func ?: "?", fmt, args); +} + +/****************************************************************************** + * section: hooking globals (global) + *****************************************************************************/ + +static void update_global() +{ + struct afb_hook_global *hook; + int flags = 0; + + pthread_rwlock_rdlock(&rwlock); + hook = list_of_global_hooks; + while (hook) { + flags = hook->flags; + hook = hook->next; + } + verbose_observer = (flags & afb_hook_flag_global_vverbose) ? afb_hook_global_vverbose : NULL; + pthread_rwlock_unlock(&rwlock); +} + +struct afb_hook_global *afb_hook_create_global(int flags, struct afb_hook_global_itf *itf, void *closure) +{ + struct afb_hook_global *hook; + + /* alloc the result */ + hook = calloc(1, sizeof *hook); + if (hook == NULL) + return NULL; + + /* initialise the rest */ + hook->refcount = 1; + hook->flags = flags; + hook->itf = itf ? itf : &hook_global_default_itf; + hook->closure = closure; + + /* record the hook */ + pthread_rwlock_wrlock(&rwlock); + hook->next = list_of_global_hooks; + list_of_global_hooks = hook; + pthread_rwlock_unlock(&rwlock); + + /* update hooking */ + update_global(); + + /* returns it */ + return hook; +} + +struct afb_hook_global *afb_hook_addref_global(struct afb_hook_global *hook) +{ + pthread_rwlock_wrlock(&rwlock); + hook->refcount++; + pthread_rwlock_unlock(&rwlock); + return hook; +} + +void afb_hook_unref_global(struct afb_hook_global *hook) +{ + struct afb_hook_global **prv; + + if (hook) { + pthread_rwlock_wrlock(&rwlock); + if (--hook->refcount) + hook = NULL; + else { + /* unlink */ + prv = &list_of_global_hooks; + while (*prv && *prv != hook) + prv = &(*prv)->next; + if(*prv) + *prv = hook->next; + } + pthread_rwlock_unlock(&rwlock); + if (hook) { + /* free */ + free(hook); + + /* update hooking */ + update_global(); + } + } +} +