#define _GNU_SOURCE
+#include <limits.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <pthread.h>
+#include <unistd.h>
#include <json-c/json.h>
#include "afb-hook.h"
#include "afb-session.h"
#include "afb-xreq.h"
+#include "afb-ditf.h"
#include "verbose.h"
/**
- * Definition of a hook
+ * Definition of a hook for xreq
*/
-struct afb_hook {
- struct afb_hook *next; /**< next hook */
+struct afb_hook_xreq {
+ struct afb_hook_xreq *next; /**< next hook */
unsigned refcount; /**< reference count */
char *api; /**< api hooked or NULL for any */
char *verb; /**< verb hooked or NULL for any */
struct afb_session *session; /**< session hooked or NULL if any */
unsigned flags; /**< hook flags */
- struct afb_hook_xreq_itf *reqitf; /**< interface of hook */
+ struct afb_hook_xreq_itf *itf; /**< interface of hook */
void *closure; /**< closure for callbacks */
};
-/*
- * Structure for handling subcalls callbacks
+/**
+ * Definition of a hook for ditf
*/
-struct hook_subcall {
- struct afb_xreq *xreq; /* hookd request */
- void (*callback)(void*, int, struct json_object*); /* client callback */
- void *cb_closure; /* cient closure */
+struct afb_hook_ditf {
+ struct afb_hook_ditf *next; /**< next hook */
+ unsigned refcount; /**< reference count */
+ char *api; /**< api hooked or NULL for any */
+ unsigned flags; /**< hook flags */
+ struct afb_hook_ditf_itf *itf; /**< interface of hook */
+ void *closure; /**< closure for callbacks */
};
/* synchronisation across threads */
static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
-/* list of hooks */
-static struct afb_hook *list_of_hooks = NULL;
+/* list of hooks for xreq */
+static struct afb_hook_xreq *list_of_xreq_hooks = NULL;
+
+/* list of hooks for ditf */
+static struct afb_hook_ditf *list_of_ditf_hooks = NULL;
/******************************************************************************
* section: default callbacks for tracing requests
*****************************************************************************/
#define _HOOK_XREQ_(what,...) \
- struct afb_hook *hook; \
+ struct afb_hook_xreq *hook; \
pthread_rwlock_rdlock(&rwlock); \
- hook = list_of_hooks; \
+ hook = list_of_xreq_hooks; \
while (hook) { \
- if (hook->reqitf->hook_xreq_##what \
+ if (hook->itf->hook_xreq_##what \
&& (hook->flags & afb_hook_flag_req_##what) != 0 \
&& (!hook->session || hook->session == xreq->context.session) \
&& (!hook->api || !strcasecmp(hook->api, xreq->api)) \
&& (!hook->verb || !strcasecmp(hook->verb, xreq->verb))) { \
- hook->reqitf->hook_xreq_##what(hook->closure, __VA_ARGS__); \
+ hook->itf->hook_xreq_##what(hook->closure, __VA_ARGS__); \
} \
hook = hook->next; \
} \
int f, flags;
int add;
- struct afb_hook *hook;
+ struct afb_hook_xreq *hook;
/* scan hook list to get the expected flags */
flags = 0;
pthread_rwlock_rdlock(&rwlock);
- hook = list_of_hooks;
+ hook = list_of_xreq_hooks;
while (hook) {
f = hook->flags & afb_hook_flags_req_all;
add = f != 0
}
}
-struct afb_hook *afb_hook_xreq_create(const char *api, const char *verb, struct afb_session *session, unsigned flags, struct afb_hook_xreq_itf *itf, void *closure)
+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)
{
- struct afb_hook *hook;
+ struct afb_hook_xreq *hook;
/* alloc the result */
- hook = malloc(sizeof *hook);
+ hook = calloc(1, sizeof *hook);
if (hook == NULL)
return NULL;
afb_session_addref(session);
hook->refcount = 1;
hook->flags = flags;
- hook->reqitf = itf ? itf : &hook_xreq_default_itf;
+ hook->itf = itf ? itf : &hook_xreq_default_itf;
hook->closure = closure;
/* record the hook */
pthread_rwlock_wrlock(&rwlock);
- hook->next = list_of_hooks;
- list_of_hooks = hook;
+ hook->next = list_of_xreq_hooks;
+ list_of_xreq_hooks = hook;
pthread_rwlock_unlock(&rwlock);
/* returns it */
return hook;
}
-struct afb_hook *afb_hook_addref(struct afb_hook *hook)
+struct afb_hook_xreq *afb_hook_addref_xreq(struct afb_hook_xreq *hook)
{
pthread_rwlock_wrlock(&rwlock);
hook->refcount++;
return hook;
}
-void afb_hook_unref(struct afb_hook *hook)
+void afb_hook_unref_xreq(struct afb_hook_xreq *hook)
{
- struct afb_hook **prv;
+ struct afb_hook_xreq **prv;
if (hook) {
pthread_rwlock_wrlock(&rwlock);
hook = NULL;
else {
/* unlink */
- prv = &list_of_hooks;
+ prv = &list_of_xreq_hooks;
while (*prv && *prv != hook)
prv = &(*prv)->next;
if(*prv)
}
}
+/******************************************************************************
+ * section: default callbacks for tracing daemon interface
+ *****************************************************************************/
+
+static void _hook_ditf_(const struct afb_ditf *ditf, 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 ditf-%s allocation error for %s", ditf->prefix, format);
+ else {
+ NOTICE("hook ditf-%s %s", ditf->prefix, buffer);
+ free(buffer);
+ }
+}
+
+static void hook_ditf_event_broadcast_before_cb(void *closure, 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)
+{
+ _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)
+{
+ _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)
+{
+ _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)
+{
+ _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)
+{
+ int len;
+ char *msg;
+ va_list ap;
+
+ va_copy(ap, args);
+ len = vasprintf(&msg, fmt, ap);
+ va_end(ap);
+
+ if (len < 0)
+ _hook_ditf_(ditf, "vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, function, fmt);
+ else {
+ _hook_ditf_(ditf, "vverbose(%d, %s, %d, %s) -> %s", level, file, line, function, msg);
+ free(msg);
+ }
+}
+
+static void hook_ditf_event_make_cb(void *closure, const struct afb_ditf *ditf, const char *name, struct afb_event result)
+{
+ _hook_ditf_(ditf, "event_make(%s) -> %s:%p", name, afb_event_name(result), result.closure);
+}
+
+static void hook_ditf_rootdir_get_fd_cb(void *closure, const struct afb_ditf *ditf, int result)
+{
+ char path[PATH_MAX];
+ if (result < 0)
+ _hook_ditf_(ditf, "rootdir_get_fd() -> %d, %m", result);
+ else {
+ sprintf(path, "/proc/self/fd/%d", result);
+ readlink(path, path, sizeof path);
+ _hook_ditf_(ditf, "rootdir_get_fd() -> %d = %s", result, path);
+ }
+}
+
+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)
+{
+ char path[PATH_MAX];
+ if (!locale)
+ locale = "(null)";
+ if (result < 0)
+ _hook_ditf_(ditf, "rootdir_open_locale(%s, %d, %s) -> %d, %m", filename, flags, locale, result);
+ else {
+ sprintf(path, "/proc/self/fd/%d", result);
+ readlink(path, path, sizeof path);
+ _hook_ditf_(ditf, "rootdir_open_locale(%s, %d, %s) -> %d = %s", filename, flags, locale, result, path);
+ }
+}
+
+
+static struct afb_hook_ditf_itf hook_ditf_default_itf = {
+ .hook_ditf_event_broadcast_before = hook_ditf_event_broadcast_before_cb,
+ .hook_ditf_event_broadcast_after = hook_ditf_event_broadcast_after_cb,
+ .hook_ditf_get_event_loop = hook_ditf_get_event_loop_cb,
+ .hook_ditf_get_user_bus = hook_ditf_get_user_bus_cb,
+ .hook_ditf_get_system_bus = hook_ditf_get_system_bus_cb,
+ .hook_ditf_vverbose = hook_ditf_vverbose_cb,
+ .hook_ditf_event_make = hook_ditf_event_make_cb,
+ .hook_ditf_rootdir_get_fd = hook_ditf_rootdir_get_fd_cb,
+ .hook_ditf_rootdir_open_locale = hook_ditf_rootdir_open_locale_cb,
+};
+
+/******************************************************************************
+ * section: hooks for tracing requests
+ *****************************************************************************/
+
+#define _HOOK_DITF_(what,...) \
+ struct afb_hook_ditf *hook; \
+ pthread_rwlock_rdlock(&rwlock); \
+ 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->prefix))) { \
+ hook->itf->hook_ditf_##what(hook->closure, __VA_ARGS__); \
+ } \
+ hook = hook->next; \
+ } \
+ pthread_rwlock_unlock(&rwlock);
+
+void afb_hook_ditf_event_broadcast_before(const struct afb_ditf *ditf, const char *name, struct json_object *object)
+{
+ _HOOK_DITF_(event_broadcast_before, ditf, name, object);
+}
+
+int afb_hook_ditf_event_broadcast_after(const struct afb_ditf *ditf, const char *name, struct json_object *object, int result)
+{
+ _HOOK_DITF_(event_broadcast_after, ditf, name, object, result);
+ return result;
+}
+
+struct sd_event *afb_hook_ditf_get_event_loop(const struct afb_ditf *ditf, struct sd_event *result)
+{
+ _HOOK_DITF_(get_event_loop, ditf, result);
+ return result;
+}
+
+struct sd_bus *afb_hook_ditf_get_user_bus(const struct afb_ditf *ditf, struct sd_bus *result)
+{
+ _HOOK_DITF_(get_user_bus, ditf, result);
+ return result;
+}
+
+struct sd_bus *afb_hook_ditf_get_system_bus(const struct afb_ditf *ditf, struct sd_bus *result)
+{
+ _HOOK_DITF_(get_system_bus, ditf, result);
+ return result;
+}
+
+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)
+{
+ _HOOK_DITF_(vverbose, ditf, level, file, line, function, fmt, args);
+}
+
+struct afb_event afb_hook_ditf_event_make(const struct afb_ditf *ditf, const char *name, struct afb_event result)
+{
+ _HOOK_DITF_(event_make, ditf, name, result);
+ return result;
+}
+
+int afb_hook_ditf_rootdir_get_fd(const struct afb_ditf *ditf, int result)
+{
+ _HOOK_DITF_(rootdir_get_fd, ditf, result);
+ return result;
+}
+
+int afb_hook_ditf_rootdir_open_locale(const struct afb_ditf *ditf, const char *filename, int flags, const char *locale, int result)
+{
+ _HOOK_DITF_(rootdir_open_locale, ditf, filename, flags, locale, result);
+ return result;
+}
+
+
+
+/******************************************************************************
+ * section:
+ *****************************************************************************/
+
+int afb_hook_flags_ditf(const char *api)
+{
+ int flags;
+ struct afb_hook_ditf *hook;
+
+ pthread_rwlock_rdlock(&rwlock);
+ flags = 0;
+ hook = list_of_ditf_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_ditf *afb_hook_create_ditf(const char *api, int flags, struct afb_hook_ditf_itf *itf, void *closure)
+{
+ struct afb_hook_ditf *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_ditf_default_itf;
+ hook->closure = closure;
+
+ /* record the hook */
+ pthread_rwlock_wrlock(&rwlock);
+ hook->next = list_of_ditf_hooks;
+ list_of_ditf_hooks = hook;
+ pthread_rwlock_unlock(&rwlock);
+
+ /* returns it */
+ return hook;
+}
+
+struct afb_hook_ditf *afb_hook_addref_ditf(struct afb_hook_ditf *hook)
+{
+ pthread_rwlock_wrlock(&rwlock);
+ hook->refcount++;
+ pthread_rwlock_unlock(&rwlock);
+ return hook;
+}
+
+void afb_hook_unref_ditf(struct afb_hook_ditf *hook)
+{
+ struct afb_hook_ditf **prv;
+
+ if (hook) {
+ pthread_rwlock_wrlock(&rwlock);
+ if (--hook->refcount)
+ hook = NULL;
+ else {
+ /* unlink */
+ prv = &list_of_ditf_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