#include "afb-cred.h"
#include "afb-xreq.h"
#include "afb-ditf.h"
+#include "afb-svc.h"
#include "verbose.h"
/**
void *closure; /**< closure for callbacks */
};
+/**
+ * Definition of a hook for svc
+ */
+struct afb_hook_svc {
+ struct afb_hook_svc *next; /**< next hook */
+ unsigned refcount; /**< reference count */
+ char *api; /**< api hooked or NULL for any */
+ unsigned flags; /**< hook flags */
+ struct afb_hook_svc_itf *itf; /**< interface of hook */
+ void *closure; /**< closure for callbacks */
+};
+
/* synchronisation across threads */
static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
/* list of hooks for ditf */
static struct afb_hook_ditf *list_of_ditf_hooks = NULL;
+/* list of hooks for svc */
+static struct afb_hook_svc *list_of_svc_hooks = NULL;
+
/******************************************************************************
* section: default callbacks for tracing requests
*****************************************************************************/
}
}
+/******************************************************************************
+ * section: default callbacks for tracing service interface (svc)
+ *****************************************************************************/
+
+static void _hook_svc_(const struct afb_svc *svc, const char *format, ...)
+{
+ int len;
+ char *buffer;
+ va_list ap;
+
+ va_start(ap, format);
+ len = vasprintf(&buffer, format, ap);
+ va_end(ap);
+
+ if (len < 0)
+ NOTICE("hook svc-%s allocation error for %s", svc->api, format);
+ else {
+ NOTICE("hook svc-%s %s", svc->api, buffer);
+ free(buffer);
+ }
+}
+
+static void hook_svc_start_before_default_cb(void *closure, 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)
+{
+ _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)
+{
+ _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)
+{
+ _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)
+{
+ _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)
+{
+ _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)
+{
+ _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)
+{
+ _hook_svc_(svc, " ...callsync... -> %d: %s", status, json_object_to_json_string(result));
+}
+
+static struct afb_hook_svc_itf hook_svc_default_itf = {
+ .hook_svc_start_before = hook_svc_start_before_default_cb,
+ .hook_svc_start_after = hook_svc_start_after_default_cb,
+ .hook_svc_on_event_before = hook_svc_on_event_before_default_cb,
+ .hook_svc_on_event_after = hook_svc_on_event_after_default_cb,
+ .hook_svc_call = hook_svc_call_default_cb,
+ .hook_svc_call_result = hook_svc_call_result_default_cb,
+ .hook_svc_callsync = hook_svc_callsync_default_cb,
+ .hook_svc_callsync_result = hook_svc_callsync_result_default_cb
+};
+
+/******************************************************************************
+ * section: hooks for tracing service interface (svc)
+ *****************************************************************************/
+
+#define _HOOK_SVC_(what,...) \
+ struct afb_hook_svc *hook; \
+ pthread_rwlock_rdlock(&rwlock); \
+ 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 = hook->next; \
+ } \
+ pthread_rwlock_unlock(&rwlock);
+
+void afb_hook_svc_start_before(const struct afb_svc *svc)
+{
+ _HOOK_SVC_(start_before, svc);
+}
+
+int afb_hook_svc_start_after(const struct afb_svc *svc, int status)
+{
+ _HOOK_SVC_(start_after, svc, status);
+ return status;
+}
+
+void afb_hook_svc_on_event_before(const struct afb_svc *svc, const char *event, int eventid, struct json_object *object)
+{
+ _HOOK_SVC_(on_event_before, svc, event, eventid, object);
+}
+
+void afb_hook_svc_on_event_after(const struct afb_svc *svc, const char *event, int eventid, struct json_object *object)
+{
+ _HOOK_SVC_(on_event_after, svc, event, eventid, object);
+}
+
+void afb_hook_svc_call(const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args)
+{
+ _HOOK_SVC_(call, svc, api, verb, args);
+}
+
+void afb_hook_svc_call_result(const struct afb_svc *svc, int status, struct json_object *result)
+{
+ _HOOK_SVC_(call_result, svc, status, result);
+}
+
+void afb_hook_svc_callsync(const struct afb_svc *svc, const char *api, const char *verb, struct json_object *args)
+{
+ _HOOK_SVC_(callsync, svc, api, verb, args);
+}
+
+int afb_hook_svc_callsync_result(const struct afb_svc *svc, int status, struct json_object *result)
+{
+ _HOOK_SVC_(callsync_result, svc, status, result);
+ return status;
+}
+
+/******************************************************************************
+ * section: hooking services (svc)
+ *****************************************************************************/
+
+int afb_hook_flags_svc(const char *api)
+{
+ int flags;
+ struct afb_hook_svc *hook;
+
+ pthread_rwlock_rdlock(&rwlock);
+ flags = 0;
+ hook = list_of_svc_hooks;
+ while (hook) {
+ if (!api || !hook->api || !strcasecmp(hook->api, api))
+ flags |= hook->flags;
+ hook = hook->next;
+ }
+ pthread_rwlock_unlock(&rwlock);
+ return flags;
+}
+
+struct afb_hook_svc *afb_hook_create_svc(const char *api, int flags, struct afb_hook_svc_itf *itf, void *closure)
+{
+ struct afb_hook_svc *hook;
+
+ /* alloc the result */
+ hook = calloc(1, sizeof *hook);
+ if (hook == NULL)
+ return NULL;
+
+ /* get a copy of the names */
+ hook->api = api ? strdup(api) : NULL;
+ if (api && !hook->api) {
+ free(hook);
+ return NULL;
+ }
+
+ /* initialise the rest */
+ hook->refcount = 1;
+ hook->flags = flags;
+ hook->itf = itf ? itf : &hook_svc_default_itf;
+ hook->closure = closure;
+
+ /* record the hook */
+ pthread_rwlock_wrlock(&rwlock);
+ hook->next = list_of_svc_hooks;
+ list_of_svc_hooks = hook;
+ pthread_rwlock_unlock(&rwlock);
+
+ /* returns it */
+ return hook;
+}
+
+struct afb_hook_svc *afb_hook_addref_svc(struct afb_hook_svc *hook)
+{
+ pthread_rwlock_wrlock(&rwlock);
+ hook->refcount++;
+ pthread_rwlock_unlock(&rwlock);
+ return hook;
+}
+
+void afb_hook_unref_svc(struct afb_hook_svc *hook)
+{
+ struct afb_hook_svc **prv;
+
+ if (hook) {
+ pthread_rwlock_wrlock(&rwlock);
+ if (--hook->refcount)
+ hook = NULL;
+ else {
+ /* unlink */
+ prv = &list_of_svc_hooks;
+ while (*prv && *prv != hook)
+ prv = &(*prv)->next;
+ if(*prv)
+ *prv = hook->next;
+ }
+ pthread_rwlock_unlock(&rwlock);
+ if (hook) {
+ /* free */
+ free(hook->api);
+ free(hook);
+ }
+ }
+}
+
Code Review / src / app-framework-binder.git / blobdiff