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-rw-r--r--plugins/afm-main-plugin/utils-jbus.c109
1 files changed, 71 insertions, 38 deletions
diff --git a/plugins/afm-main-plugin/utils-jbus.c b/plugins/afm-main-plugin/utils-jbus.c
index 67e3ce4c..9d6c1d5d 100644
--- a/plugins/afm-main-plugin/utils-jbus.c
+++ b/plugins/afm-main-plugin/utils-jbus.c
@@ -29,6 +29,8 @@
#include "utils-jbus.h"
+#define MAX_JSON_DEPTH 5
+
struct jreq;
struct jservice;
struct jbus;
@@ -43,16 +45,18 @@ struct jreq {
struct jservice {
struct jservice *next;
char *method;
- void (*oncall_s)(struct jreq *, const char *);
- void (*oncall_j)(struct jreq *, struct json_object *);
+ void (*oncall_s)(struct jreq *, const char *, void *);
+ void (*oncall_j)(struct jreq *, struct json_object *, void *);
+ void *data;
};
/* structure for signal handlers */
struct jsignal {
struct jsignal *next;
char *name;
- void (*onsignal_s)(const char *);
- void (*onsignal_j)(struct json_object *);
+ void (*onsignal_s)(const char *, void *);
+ void (*onsignal_j)(struct json_object *, void *);
+ void *data;
};
/* structure for recording asynchronous requests */
@@ -73,6 +77,7 @@ struct respsync {
/* structure for handling either client or server jbus on dbus */
struct jbus {
int refcount;
+ struct json_tokener *tokener;
struct jservice *services;
DBusConnection *connection;
struct jsignal *signals;
@@ -81,7 +86,7 @@ struct jbus {
char *name;
int watchnr;
int watchfd;
- int watchflags;
+ short watchflags;
};
/*********************** STATIC COMMON METHODS *****************/
@@ -117,8 +122,9 @@ static int matchitf(struct jbus *jbus, DBusMessage *message)
static int add_service(
struct jbus *jbus,
const char *method,
- void (*oncall_s)(struct jreq*, const char*),
- void (*oncall_j)(struct jreq*, struct json_object*)
+ void (*oncall_s)(struct jreq*, const char*, void*),
+ void (*oncall_j)(struct jreq*, struct json_object*, void*),
+ void *data
)
{
struct jservice *srv;
@@ -138,6 +144,7 @@ static int add_service(
/* record the service */
srv->oncall_s = oncall_s;
srv->oncall_j = oncall_j;
+ srv->data = data;
srv->next = jbus->services;
jbus->services = srv;
@@ -152,8 +159,9 @@ error:
static int add_signal(
struct jbus *jbus,
const char *name,
- void (*onsignal_s)(const char*),
- void (*onsignal_j)(struct json_object*)
+ void (*onsignal_s)(const char*, void*),
+ void (*onsignal_j)(struct json_object*, void*),
+ void *data
)
{
char *rule;
@@ -182,6 +190,7 @@ static int add_signal(
/* record the signal */
sig->onsignal_s = onsignal_s;
sig->onsignal_j = onsignal_j;
+ sig->data = data;
sig->next = jbus->signals;
jbus->signals = sig;
@@ -250,6 +259,17 @@ static void sync_of_replies(int status, const char *value, void *data)
s->replied = 1;
}
+static int parse(struct jbus *jbus, const char *msg, struct json_object **obj)
+{
+ json_tokener_reset(jbus->tokener);
+ *obj = json_tokener_parse_ex(jbus->tokener, msg, -1);
+ if (json_tokener_get_error(jbus->tokener) == json_tokener_success)
+ return 1;
+ json_object_put(*obj);
+ *obj = NULL;
+ return 0;
+}
+
static DBusHandlerResult incoming_resp(DBusConnection *connection, DBusMessage *message, struct jbus *jbus, int iserror)
{
int status;
@@ -280,8 +300,7 @@ static DBusHandlerResult incoming_resp(DBusConnection *connection, DBusMessage *
if (jrw->onresp_s)
jrw->onresp_s(iserror ? -1 : status, str, jrw->data);
else {
- reply = json_tokener_parse(str);
- status = reply ? 0 : -1;
+ status = parse(jbus, str, &reply) - 1;
jrw->onresp_j(iserror ? -1 : status, reply, jrw->data);
json_object_put(reply);
}
@@ -322,14 +341,13 @@ static DBusHandlerResult incoming_call(DBusConnection *connection, DBusMessage *
return reply_invalid_request(jreq);
if (srv->oncall_s) {
/* handling strings only */
- srv->oncall_s(jreq, str);
+ srv->oncall_s(jreq, str, srv->data);
}
else {
/* handling json only */
- query = json_tokener_parse(str);
- if (query == NULL)
+ if (!parse(jbus, str, &query))
return reply_invalid_request(jreq);
- srv->oncall_j(jreq, query);
+ srv->oncall_j(jreq, query, srv->data);
json_object_put(query);
}
return DBUS_HANDLER_RESULT_HANDLED;
@@ -358,13 +376,12 @@ static DBusHandlerResult incoming_signal(DBusConnection *connection, DBusMessage
if (dbus_message_get_args(message, NULL, DBUS_TYPE_STRING, &str, DBUS_TYPE_INVALID)) {
if (sig->onsignal_s) {
/* handling strings only */
- sig->onsignal_s(str);
+ sig->onsignal_s(str, sig->data);
}
else {
/* handling json only */
- obj = json_tokener_parse(str);
- if (obj != NULL) {
- sig->onsignal_j(obj);
+ if (parse(jbus, str, &obj)) {
+ sig->onsignal_j(obj, sig->data);
json_object_put(obj);
}
}
@@ -390,12 +407,11 @@ static DBusHandlerResult incoming(DBusConnection *connection, DBusMessage *messa
static void watchset(DBusWatch *watch, struct jbus *jbus)
{
unsigned int flags;
- int wf, e;
+ short wf;
flags = dbus_watch_get_flags(watch);
- e = dbus_watch_get_enabled(watch);
wf = jbus->watchflags;
- if (e) {
+ if (dbus_watch_get_enabled(watch)) {
if (flags & DBUS_WATCH_READABLE)
wf |= POLLIN;
if (flags & DBUS_WATCH_WRITABLE)
@@ -444,7 +460,17 @@ static dbus_bool_t watchadd(DBusWatch *watch, void *data)
/************************** MAIN FUNCTIONS *****************************************/
-struct jbus *create_jbus(int session, const char *path)
+struct jbus *create_jbus_system(const char *path)
+{
+ return create_jbus(path, 0);
+}
+
+struct jbus *create_jbus_session(const char *path)
+{
+ return create_jbus(path, 1);
+}
+
+struct jbus *create_jbus(const char *path, int session)
{
struct jbus *jbus;
char *name;
@@ -456,6 +482,11 @@ struct jbus *create_jbus(int session, const char *path)
goto error;
}
jbus->refcount = 1;
+ jbus->tokener = json_tokener_new_ex(MAX_JSON_DEPTH);
+ if (jbus->tokener == NULL) {
+ errno = ENOMEM;
+ goto error2;
+ }
jbus->path = strdup(path);
if (jbus->path == NULL) {
errno = ENOMEM;
@@ -511,6 +542,8 @@ void jbus_unref(struct jbus *jbus)
free(srv->method);
free(srv);
}
+ if (jbus->tokener != NULL)
+ json_tokener_free(jbus->tokener);
free(jbus->name);
free(jbus->path);
free(jbus);
@@ -602,14 +635,14 @@ int jbus_send_signal_j(struct jbus *jbus, const char *name, struct json_object *
return jbus_send_signal_s(jbus, name, str);
}
-int jbus_add_service_s(struct jbus *jbus, const char *method, void (*oncall)(struct jreq *, const char *))
+int jbus_add_service_s(struct jbus *jbus, const char *method, void (*oncall)(struct jreq *, const char *, void *), void *data)
{
- return add_service(jbus, method, oncall, NULL);
+ return add_service(jbus, method, oncall, NULL, data);
}
-int jbus_add_service_j(struct jbus *jbus, const char *method, void (*oncall)(struct jreq *, struct json_object *))
+int jbus_add_service_j(struct jbus *jbus, const char *method, void (*oncall)(struct jreq *, struct json_object *, void *), void *data)
{
- return add_service(jbus, method, NULL, oncall);
+ return add_service(jbus, method, NULL, oncall, data);
}
int jbus_start_serving(struct jbus *jbus)
@@ -687,7 +720,7 @@ int jbus_read_write_dispatch_multiple(struct jbus **jbuses, int njbuses, int tom
errno = EINVAL;
return -1;
}
- fds = alloca(njbuses * sizeof * fds);
+ fds = alloca((unsigned)njbuses * sizeof * fds);
assert(fds != NULL);
r = jbus_dispatch_multiple(jbuses, njbuses, maxcount);
@@ -695,7 +728,7 @@ int jbus_read_write_dispatch_multiple(struct jbus **jbuses, int njbuses, int tom
return r;
n = jbus_fill_pollfds(jbuses, njbuses, fds);
for(;;) {
- s = poll(fds, n, toms);
+ s = poll(fds, (nfds_t)n, toms);
if (s >= 0)
break;
if (errno != EINTR)
@@ -758,7 +791,7 @@ struct json_object *jbus_call_sj_sync(struct jbus *jbus, const char *method, con
if (str == NULL)
obj = NULL;
else {
- obj = json_tokener_parse(str);
+ parse(jbus, str, &obj);
free(str);
}
return obj;
@@ -784,14 +817,14 @@ struct json_object *jbus_call_jj_sync(struct jbus *jbus, const char *method, str
return jbus_call_sj_sync(jbus, method, str);
}
-int jbus_on_signal_s(struct jbus *jbus, const char *name, void (*onsig)(const char *))
+int jbus_on_signal_s(struct jbus *jbus, const char *name, void (*onsig)(const char *, void *), void *data)
{
- return add_signal(jbus, name, onsig, NULL);
+ return add_signal(jbus, name, onsig, NULL, data);
}
-int jbus_on_signal_j(struct jbus *jbus, const char *name, void (*onsig)(struct json_object *))
+int jbus_on_signal_j(struct jbus *jbus, const char *name, void (*onsig)(struct json_object *, void *), void *data)
{
- return add_signal(jbus, name, NULL, onsig);
+ return add_signal(jbus, name, NULL, onsig, data);
}
/************************** FEW LITTLE TESTS *****************************************/
@@ -800,13 +833,13 @@ int jbus_on_signal_j(struct jbus *jbus, const char *name, void (*onsig)(struct j
#include <stdio.h>
#include <unistd.h>
struct jbus *jbus;
-void ping(struct jreq *jreq, struct json_object *request)
+void ping(struct jreq *jreq, struct json_object *request, void *unused)
{
printf("ping(%s) -> %s\n",json_object_to_json_string(request),json_object_to_json_string(request));
jbus_reply_j(jreq, request);
json_object_put(request);
}
-void incr(struct jreq *jreq, struct json_object *request)
+void incr(struct jreq *jreq, struct json_object *request, void *unused)
{
static int counter = 0;
struct json_object *res = json_object_new_int(++counter);
@@ -820,8 +853,8 @@ int main()
{
int s1, s2, s3;
jbus = create_jbus(1, "/bzh/iot/jdbus");
- s1 = jbus_add_service_j(jbus, "ping", ping);
- s2 = jbus_add_service_j(jbus, "incr", incr);
+ s1 = jbus_add_service_j(jbus, "ping", ping, NULL);
+ s2 = jbus_add_service_j(jbus, "incr", incr, NULL);
s3 = jbus_start_serving(jbus);
printf("started %d %d %d\n", s1, s2, s3);
while (!jbus_read_write_dispatch (jbus, -1));