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Systemd/src/libsystemd-bus/test-bus-objects.c

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <assert.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <fcntl.h>
#include "log.h"
#include "util.h"
#include "macro.h"
#include "strv.h"
#include "sd-bus.h"
#include "bus-internal.h"
#include "bus-message.h"
/* Test:
*
* sd_bus_add_object_manager()
* sd_bus_emit_properties_changed()
*
* Add in:
*
* automatic properties
* node hierarchy updates during dispatching
* emit_interfaces_added/emit_interfaces_removed
*
*/
struct context {
int fds[2];
bool quit;
char *something;
};
static int something_handler(sd_bus *bus, sd_bus_message *m, void *userdata) {
struct context *c = userdata;
const char *s;
char *n = NULL;
int r;
r = sd_bus_message_read(m, "s", &s);
assert_se(r > 0);
n = strjoin("<<<", s, ">>>", NULL);
assert_se(n);
free(c->something);
c->something = n;
log_info("AlterSomething() called, got %s, returning %s", s, n);
r = sd_bus_reply_method_return(bus, m, "s", n);
assert_se(r >= 0);
return 1;
}
static int exit_handler(sd_bus *bus, sd_bus_message *m, void *userdata) {
struct context *c = userdata;
int r;
c->quit = true;
log_info("Exit called");
r = sd_bus_reply_method_return(bus, m, "");
assert_se(r >= 0);
return 1;
}
static int get_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata) {
struct context *c = userdata;
int r;
log_info("property get for %s called", property);
r = sd_bus_message_append(reply, "s", c->something);
assert_se(r >= 0);
return 1;
}
static int set_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *value, sd_bus_error *error, void *userdata) {
struct context *c = userdata;
const char *s;
char *n;
int r;
log_info("property set for %s called", property);
r = sd_bus_message_read(value, "s", &s);
assert_se(r >= 0);
n = strdup(s);
assert_se(n);
free(c->something);
c->something = n;
return 1;
}
static int value_handler(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, sd_bus_error *error, void *userdata) {
_cleanup_free_ char *s = NULL;
const char *x;
int r;
assert_se(asprintf(&s, "object %p, path %s", userdata, path) >= 0);
r = sd_bus_message_append(reply, "s", s);
assert_se(r >= 0);
assert_se(x = startswith(path, "/value/"));
assert_se(PTR_TO_UINT(userdata) == 30);
return 1;
}
static const sd_bus_vtable vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_METHOD("AlterSomething", "s", "s", 0, something_handler),
SD_BUS_METHOD("Exit", "", "", 0, exit_handler),
SD_BUS_WRITABLE_PROPERTY("Something", "s", get_handler, set_handler, 0, 0),
SD_BUS_VTABLE_END
};
static const sd_bus_vtable vtable2[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Value", "s", value_handler, 10, 0),
SD_BUS_VTABLE_END
};
static int enumerator_callback(sd_bus *b, const char *path, char ***nodes, void *userdata) {
if (object_path_startswith("/value", path))
assert_se(*nodes = strv_new("/value/a", "/value/b", "/value/c", NULL));
return 1;
}
static void *server(void *p) {
struct context *c = p;
sd_bus *bus = NULL;
sd_id128_t id;
int r;
c->quit = false;
assert_se(sd_id128_randomize(&id) >= 0);
assert_se(sd_bus_new(&bus) >= 0);
assert_se(sd_bus_set_fd(bus, c->fds[0], c->fds[0]) >= 0);
assert_se(sd_bus_set_server(bus, 1, id) >= 0);
assert_se(sd_bus_add_object_vtable(bus, "/foo", "org.freedesktop.systemd.test", vtable, c) >= 0);
assert_se(sd_bus_add_object_vtable(bus, "/foo", "org.freedesktop.systemd.test2", vtable, c) >= 0);
assert_se(sd_bus_add_fallback_vtable(bus, "/value", "org.freedesktop.systemd.ValueTest", vtable2, NULL, UINT_TO_PTR(20)) >= 0);
assert_se(sd_bus_add_node_enumerator(bus, "/value", enumerator_callback, NULL) >= 0);
assert_se(sd_bus_start(bus) >= 0);
log_error("Entering event loop on server");
while (!c->quit) {
log_error("Loop!");
r = sd_bus_process(bus, NULL);
if (r < 0) {
log_error("Failed to process requests: %s", strerror(-r));
goto fail;
}
if (r == 0) {
r = sd_bus_wait(bus, (uint64_t) -1);
if (r < 0) {
log_error("Failed to wait: %s", strerror(-r));
goto fail;
}
continue;
}
}
r = 0;
fail:
if (bus) {
sd_bus_flush(bus);
sd_bus_unref(bus);
}
return INT_TO_PTR(r);
}
static int client(struct context *c) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_unref_ sd_bus *bus = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
const char *s;
int r;
assert_se(sd_bus_new(&bus) >= 0);
assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
assert_se(sd_bus_start(bus) >= 0);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "s", "hallo");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
assert_se(streq(s, "<<<hallo>>>"));
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Doesntexist", &error, &reply, "");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.UnknownMethod"));
sd_bus_error_free(&error);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "AlterSomething", &error, &reply, "as", 1, "hallo");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.InvalidArgs"));
sd_bus_error_free(&error);
r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
assert_se(streq(s, "<<<hallo>>>"));
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_set_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, "s", "test");
assert_se(r >= 0);
r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Something", &error, &reply, "s");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
assert_se(streq(s, "test"));
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r <= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_get_property(bus, "org.freedesktop.systemd.test", "/value/xuzz", "org.freedesktop.systemd.ValueTest", "Value", &error, &reply, "s");
assert_se(r >= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
log_info("read %s", s);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r <= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r <= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
assert_se(r <= 0);
r = sd_bus_message_read(reply, "s", &s);
assert_se(r >= 0);
fputs(s, stdout);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "");
assert_se(r <= 0);
bus_message_dump(reply);
sd_bus_message_unref(reply);
reply = NULL;
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/value/a", "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", "org.freedesktop.systemd.ValueTest2");
assert_se(r < 0);
assert_se(sd_bus_error_has_name(&error, "org.freedesktop.DBus.Error.UnknownInterface"));
sd_bus_error_free(&error);
r = sd_bus_call_method(bus, "org.freedesktop.systemd.test", "/foo", "org.freedesktop.systemd.test", "Exit", &error, NULL, "");
assert_se(r >= 0);
sd_bus_flush(bus);
return 0;
}
int main(int argc, char *argv[]) {
struct context c;
pthread_t s;
void *p;
int r, q;
zero(c);
assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, c.fds) >= 0);
r = pthread_create(&s, NULL, server, &c);
if (r != 0)
return -r;
r = client(&c);
q = pthread_join(s, &p);
if (q != 0)
return -q;
if (r < 0)
return r;
if (PTR_TO_INT(p) < 0)
return PTR_TO_INT(p);
free(c.something);
return EXIT_SUCCESS;
}
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