1118 lines
31 KiB
C
1118 lines
31 KiB
C
/*-*- 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 <sys/socket.h>
|
|
|
|
#include "util.h"
|
|
#include "strv.h"
|
|
#include "macro.h"
|
|
#include "def.h"
|
|
#include "missing.h"
|
|
|
|
#include "sd-event.h"
|
|
#include "sd-bus.h"
|
|
#include "bus-error.h"
|
|
#include "bus-message.h"
|
|
#include "bus-util.h"
|
|
#include "bus-internal.h"
|
|
|
|
static int quit_callback(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
|
|
sd_event *e = userdata;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(e);
|
|
|
|
sd_event_request_quit(e);
|
|
return 1;
|
|
}
|
|
|
|
int bus_async_unregister_and_quit(sd_event *e, sd_bus *bus, const char *name) {
|
|
_cleanup_free_ char *match = NULL;
|
|
int r;
|
|
|
|
assert(e);
|
|
assert(bus);
|
|
assert(name);
|
|
|
|
r = asprintf(&match, "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameLost',arg0='%s'", name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_add_match(bus, match, quit_callback, e);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_release_name(bus, name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (r != SD_BUS_NAME_RELEASED)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_event_loop_with_idle(sd_event *e, sd_bus *bus, const char *name, usec_t timeout) {
|
|
bool exiting = false;
|
|
int r;
|
|
|
|
assert(e);
|
|
assert(bus);
|
|
assert(name);
|
|
|
|
for (;;) {
|
|
r = sd_event_get_state(e);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (r == SD_EVENT_FINISHED)
|
|
break;
|
|
|
|
r = sd_event_run(e, exiting ? (uint64_t) -1 : timeout);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (r == 0 && !exiting) {
|
|
r = bus_async_unregister_and_quit(e, bus, name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
exiting = true;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_verify_polkit(
|
|
sd_bus *bus,
|
|
sd_bus_message *m,
|
|
const char *action,
|
|
bool interactive,
|
|
bool *_challenge,
|
|
sd_bus_error *e) {
|
|
|
|
const char *sender;
|
|
uid_t uid;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(m);
|
|
assert(action);
|
|
|
|
sender = sd_bus_message_get_sender(m);
|
|
if (!sender)
|
|
return -EBADMSG;
|
|
|
|
r = sd_bus_get_owner_uid(bus, sender, &uid);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (uid == 0)
|
|
return 1;
|
|
|
|
#ifdef ENABLE_POLKIT
|
|
else {
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
int authorized = false, challenge = false;
|
|
|
|
r = sd_bus_call_method(
|
|
bus,
|
|
"org.freedesktop.PolicyKit1",
|
|
"/org/freedesktop/PolicyKit1/Authority",
|
|
"org.freedesktop.PolicyKit1.Authority",
|
|
"CheckAuthorization",
|
|
e,
|
|
&reply,
|
|
"(sa{sv})sa{ss}us",
|
|
"system-bus-name", 1, "name", "s", sender,
|
|
action,
|
|
0,
|
|
interactive ? 1 : 0,
|
|
"");
|
|
|
|
if (r < 0) {
|
|
/* Treat no PK available as access denied */
|
|
if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) {
|
|
sd_bus_error_free(e);
|
|
return -EACCES;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_enter_container(reply, 'r', "bba{ss}");
|
|
if (r >= 0)
|
|
r = sd_bus_message_read(reply, "bb", &authorized, &challenge);
|
|
|
|
if (authorized)
|
|
return 1;
|
|
|
|
if (_challenge) {
|
|
*_challenge = challenge;
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return -EACCES;
|
|
}
|
|
|
|
#ifdef ENABLE_POLKIT
|
|
|
|
typedef struct AsyncPolkitQuery {
|
|
sd_bus_message *request, *reply;
|
|
sd_bus_message_handler_t callback;
|
|
void *userdata;
|
|
uint64_t serial;
|
|
Hashmap *registry;
|
|
} AsyncPolkitQuery;
|
|
|
|
static void async_polkit_query_free(sd_bus *b, AsyncPolkitQuery *q) {
|
|
|
|
if (!q)
|
|
return;
|
|
|
|
if (q->serial > 0 && b)
|
|
sd_bus_call_async_cancel(b, q->serial);
|
|
|
|
if (q->registry && q->request)
|
|
hashmap_remove(q->registry, q->request);
|
|
|
|
sd_bus_message_unref(q->request);
|
|
sd_bus_message_unref(q->reply);
|
|
|
|
free(q);
|
|
}
|
|
|
|
static int async_polkit_callback(sd_bus *bus, sd_bus_message *reply, void *userdata, sd_bus_error *error) {
|
|
_cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
AsyncPolkitQuery *q = userdata;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(reply);
|
|
assert(q);
|
|
|
|
q->reply = sd_bus_message_ref(reply);
|
|
q->serial = 0;
|
|
|
|
r = sd_bus_message_rewind(q->request, true);
|
|
if (r < 0) {
|
|
r = sd_bus_reply_method_errno(q->request, r, NULL);
|
|
goto finish;
|
|
}
|
|
|
|
r = q->callback(bus, q->request, q->userdata, &error_buffer);
|
|
r = bus_maybe_reply_error(q->request, r, &error_buffer);
|
|
|
|
finish:
|
|
async_polkit_query_free(bus, q);
|
|
return r;
|
|
}
|
|
|
|
#endif
|
|
|
|
int bus_verify_polkit_async(
|
|
sd_bus *bus,
|
|
Hashmap **registry,
|
|
sd_bus_message *m,
|
|
const char *action,
|
|
bool interactive,
|
|
sd_bus_error *error,
|
|
sd_bus_message_handler_t callback,
|
|
void *userdata) {
|
|
|
|
#ifdef ENABLE_POLKIT
|
|
_cleanup_bus_message_unref_ sd_bus_message *pk = NULL;
|
|
AsyncPolkitQuery *q;
|
|
#endif
|
|
const char *sender;
|
|
uid_t uid;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(registry);
|
|
assert(m);
|
|
assert(action);
|
|
|
|
#ifdef ENABLE_POLKIT
|
|
q = hashmap_get(*registry, m);
|
|
if (q) {
|
|
int authorized, challenge;
|
|
|
|
/* This is the second invocation of this function, and
|
|
* there's already a response from polkit, let's
|
|
* process it */
|
|
assert(q->reply);
|
|
|
|
if (sd_bus_message_is_method_error(q->reply, NULL)) {
|
|
const sd_bus_error *e;
|
|
|
|
/* Copy error from polkit reply */
|
|
e = sd_bus_message_get_error(q->reply);
|
|
sd_bus_error_copy(error, e);
|
|
|
|
/* Treat no PK available as access denied */
|
|
if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN))
|
|
return -EACCES;
|
|
|
|
return sd_bus_error_get_errno(e);
|
|
}
|
|
|
|
r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}");
|
|
if (r >= 0)
|
|
r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (authorized)
|
|
return 1;
|
|
|
|
return -EACCES;
|
|
}
|
|
#endif
|
|
|
|
sender = sd_bus_message_get_sender(m);
|
|
if (!sender)
|
|
return -EBADMSG;
|
|
|
|
r = sd_bus_get_owner_uid(bus, sender, &uid);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (uid == 0)
|
|
return 1;
|
|
#ifdef ENABLE_POLKIT
|
|
|
|
r = hashmap_ensure_allocated(registry, trivial_hash_func, trivial_compare_func);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
bus,
|
|
"org.freedesktop.PolicyKit1",
|
|
"/org/freedesktop/PolicyKit1/Authority",
|
|
"org.freedesktop.PolicyKit1.Authority",
|
|
"CheckAuthorization",
|
|
&pk);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(
|
|
pk,
|
|
"(sa{sv})sa{ss}us",
|
|
"system-bus-name", 1, "name", "s", sender,
|
|
action,
|
|
0,
|
|
interactive ? 1 : 0,
|
|
NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
q = new0(AsyncPolkitQuery, 1);
|
|
if (!q)
|
|
return -ENOMEM;
|
|
|
|
q->request = sd_bus_message_ref(m);
|
|
q->callback = callback;
|
|
q->userdata = userdata;
|
|
|
|
r = hashmap_put(*registry, m, q);
|
|
if (r < 0) {
|
|
async_polkit_query_free(bus, q);
|
|
return r;
|
|
}
|
|
|
|
q->registry = *registry;
|
|
|
|
r = sd_bus_call_async(bus, pk, async_polkit_callback, q, 0, &q->serial);
|
|
if (r < 0) {
|
|
async_polkit_query_free(bus, q);
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
#endif
|
|
|
|
return -EACCES;
|
|
}
|
|
|
|
void bus_verify_polkit_async_registry_free(sd_bus *bus, Hashmap *registry) {
|
|
#ifdef ENABLE_POLKIT
|
|
AsyncPolkitQuery *q;
|
|
|
|
while ((q = hashmap_steal_first(registry)))
|
|
async_polkit_query_free(bus, q);
|
|
|
|
hashmap_free(registry);
|
|
#endif
|
|
}
|
|
|
|
int bus_check_peercred(sd_bus *c) {
|
|
struct ucred ucred;
|
|
socklen_t l;
|
|
int fd;
|
|
|
|
assert(c);
|
|
|
|
fd = sd_bus_get_fd(c);
|
|
if (fd < 0)
|
|
return fd;
|
|
|
|
l = sizeof(struct ucred);
|
|
if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
|
|
return -errno;
|
|
|
|
if (l != sizeof(struct ucred))
|
|
return -E2BIG;
|
|
|
|
if (ucred.uid != 0 && ucred.uid != geteuid())
|
|
return -EPERM;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int bus_open_system_systemd(sd_bus **_bus) {
|
|
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
|
int r;
|
|
|
|
assert(_bus);
|
|
|
|
if (geteuid() != 0)
|
|
return sd_bus_open_system(_bus);
|
|
|
|
/* If we are root, then let's talk directly to the system
|
|
* instance, instead of going via the bus */
|
|
|
|
r = sd_bus_new(&bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_set_address(bus, "unix:path=/run/systemd/private");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_start(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_check_peercred(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*_bus = bus;
|
|
bus = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_open_user_systemd(sd_bus **_bus) {
|
|
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
|
_cleanup_free_ char *p = NULL;
|
|
const char *e;
|
|
int r;
|
|
|
|
/* If we are supposed to talk to the instance, try via
|
|
* XDG_RUNTIME_DIR first, then fallback to normal bus
|
|
* access */
|
|
|
|
assert(_bus);
|
|
|
|
e = secure_getenv("XDG_RUNTIME_DIR");
|
|
if (e) {
|
|
if (asprintf(&p, "unix:path=%s/systemd/private", e) < 0)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
r = sd_bus_new(&bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_set_address(bus, p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_start(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_check_peercred(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*_bus = bus;
|
|
bus = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_print_property(const char *name, sd_bus_message *property, bool all) {
|
|
char type;
|
|
const char *contents;
|
|
int r;
|
|
|
|
assert(name);
|
|
assert(property);
|
|
|
|
r = sd_bus_message_peek_type(property, &type, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch (type) {
|
|
|
|
case SD_BUS_TYPE_STRING: {
|
|
const char *s;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || !isempty(s))
|
|
printf("%s=%s\n", name, s);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_BOOLEAN: {
|
|
bool b;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &b);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%s\n", name, yes_no(b));
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT64: {
|
|
uint64_t u;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &u);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* Yes, heuristics! But we can change this check
|
|
* should it turn out to not be sufficient */
|
|
|
|
if (endswith(name, "Timestamp")) {
|
|
char timestamp[FORMAT_TIMESTAMP_MAX], *t;
|
|
|
|
t = format_timestamp(timestamp, sizeof(timestamp), u);
|
|
if (t || all)
|
|
printf("%s=%s\n", name, strempty(t));
|
|
|
|
} else if (strstr(name, "USec")) {
|
|
char timespan[FORMAT_TIMESPAN_MAX];
|
|
|
|
printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u, 0));
|
|
} else
|
|
printf("%s=%llu\n", name, (unsigned long long) u);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT32: {
|
|
uint32_t u;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &u);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (strstr(name, "UMask") || strstr(name, "Mode"))
|
|
printf("%s=%04o\n", name, u);
|
|
else
|
|
printf("%s=%u\n", name, (unsigned) u);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_INT32: {
|
|
int32_t i;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &i);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%i\n", name, (int) i);
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_DOUBLE: {
|
|
double d;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%g\n", name, d);
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_ARRAY:
|
|
if (streq(contents, "s")) {
|
|
bool first = true;
|
|
const char *str;
|
|
|
|
r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) {
|
|
if (first)
|
|
printf("%s=", name);
|
|
|
|
printf("%s%s", first ? "" : " ", str);
|
|
|
|
first = false;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (first && all)
|
|
printf("%s=", name);
|
|
if (!first || all)
|
|
puts("");
|
|
|
|
r = sd_bus_message_exit_container(property);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
|
|
} else if (streq(contents, "y")) {
|
|
const uint8_t *u;
|
|
size_t n;
|
|
|
|
r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || n > 0) {
|
|
unsigned int i;
|
|
|
|
printf("%s=", name);
|
|
|
|
for (i = 0; i < n; i++)
|
|
printf("%02x", u[i]);
|
|
|
|
puts("");
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (streq(contents, "u")) {
|
|
uint32_t *u;
|
|
size_t n;
|
|
|
|
r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || n > 0) {
|
|
unsigned int i;
|
|
|
|
printf("%s=", name);
|
|
|
|
for (i = 0; i < n; i++)
|
|
printf("%08x", u[i]);
|
|
|
|
puts("");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(path);
|
|
|
|
r = sd_bus_call_method(bus,
|
|
dest,
|
|
path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
&error,
|
|
&reply,
|
|
"s", "");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
|
|
const char *name;
|
|
const char *contents;
|
|
|
|
r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!filter || strv_find(filter, name)) {
|
|
r = sd_bus_message_peek_type(reply, NULL, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_print_property(name, reply, all);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0) {
|
|
if (all)
|
|
printf("%s=[unprintable]\n", name);
|
|
/* skip what we didn't read */
|
|
r = sd_bus_message_skip(reply, contents);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
r = sd_bus_message_skip(reply, "v");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
|
|
sd_id128_t *p = userdata;
|
|
const void *v;
|
|
size_t n;
|
|
int r;
|
|
|
|
r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (n == 0)
|
|
*p = SD_ID128_NULL;
|
|
else if (n == 16)
|
|
memcpy((*p).bytes, v, n);
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
|
|
char type;
|
|
int r;
|
|
|
|
r = sd_bus_message_peek_type(m, &type, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch (type) {
|
|
case SD_BUS_TYPE_STRING: {
|
|
const char *s;
|
|
char *str;
|
|
char **p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &s);
|
|
if (r < 0)
|
|
break;
|
|
|
|
if (isempty(s))
|
|
break;
|
|
|
|
str = strdup(s);
|
|
if (!str) {
|
|
r = -ENOMEM;
|
|
break;
|
|
}
|
|
free(*p);
|
|
*p = str;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_ARRAY: {
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
char ***p = userdata;
|
|
|
|
r = bus_message_read_strv_extend(m, &l);
|
|
if (r < 0)
|
|
break;
|
|
|
|
strv_free(*p);
|
|
*p = l;
|
|
l = NULL;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_BOOLEAN: {
|
|
unsigned b;
|
|
bool *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &b);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = b;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT32: {
|
|
uint64_t u;
|
|
uint32_t *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &u);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = u;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT64: {
|
|
uint64_t t;
|
|
uint64_t *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &t);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = t;
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_map_all_properties(sd_bus *bus,
|
|
const char *destination,
|
|
const char *path,
|
|
const struct bus_properties_map *map,
|
|
void *userdata) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(destination);
|
|
assert(path);
|
|
assert(map);
|
|
|
|
r = sd_bus_call_method( bus,
|
|
destination,
|
|
path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
&error,
|
|
&m,
|
|
"s", "");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
|
|
const struct bus_properties_map *prop;
|
|
const char *member;
|
|
const char *contents;
|
|
void *v;
|
|
unsigned i;
|
|
|
|
r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
for (i = 0, prop = NULL; map[i].member; i++)
|
|
if (streq(map[i].member, member)) {
|
|
prop = &map[i];
|
|
break;
|
|
}
|
|
|
|
if (prop) {
|
|
r = sd_bus_message_peek_type(m, NULL, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
v = (uint8_t *)userdata + prop->offset;
|
|
if (map[i].set)
|
|
r = prop->set(bus, member, m, &error, v);
|
|
else
|
|
r = map_basic(bus, member, m, &error, v);
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
r = sd_bus_message_skip(m, "v");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) {
|
|
int r;
|
|
|
|
assert(transport >= 0);
|
|
assert(transport < _BUS_TRANSPORT_MAX);
|
|
assert(bus);
|
|
|
|
assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
|
|
assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP);
|
|
|
|
switch (transport) {
|
|
|
|
case BUS_TRANSPORT_LOCAL:
|
|
if (user)
|
|
r = sd_bus_default_user(bus);
|
|
else
|
|
r = sd_bus_default_system(bus);
|
|
|
|
break;
|
|
|
|
case BUS_TRANSPORT_REMOTE:
|
|
r = sd_bus_open_system_remote(host, bus);
|
|
break;
|
|
|
|
case BUS_TRANSPORT_CONTAINER:
|
|
r = sd_bus_open_system_container(host, bus);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Hmm, unknown transport type.");
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) {
|
|
int r;
|
|
|
|
assert(transport >= 0);
|
|
assert(transport < _BUS_TRANSPORT_MAX);
|
|
assert(bus);
|
|
|
|
assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
|
|
assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -ENOTSUP);
|
|
|
|
switch (transport) {
|
|
|
|
case BUS_TRANSPORT_LOCAL:
|
|
if (user)
|
|
r = bus_open_user_systemd(bus);
|
|
else
|
|
r = bus_open_system_systemd(bus);
|
|
|
|
break;
|
|
|
|
case BUS_TRANSPORT_REMOTE:
|
|
r = sd_bus_open_system_remote(host, bus);
|
|
break;
|
|
|
|
case BUS_TRANSPORT_CONTAINER:
|
|
r = sd_bus_open_system_container(host, bus);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Hmm, unknown transport type.");
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_property_get_tristate(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int *tristate = userdata;
|
|
|
|
return sd_bus_message_append(reply, "b", *tristate > 0);
|
|
}
|
|
|
|
int bus_property_get_bool(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int b = *(bool*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 'b', &b);
|
|
}
|
|
|
|
#if __SIZEOF_SIZE_T__ != 8
|
|
int bus_property_get_size(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
uint64_t sz = *(size_t*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 't', &sz);
|
|
}
|
|
#endif
|
|
|
|
#if __SIZEOF_LONG__ != 8
|
|
int bus_property_get_long(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int64_t l = *(long*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 'x', &l);
|
|
}
|
|
|
|
int bus_property_get_ulong(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
uint64_t ul = *(unsigned long*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 't', &ul);
|
|
}
|
|
#endif
|
|
|
|
int bus_log_parse_error(int r) {
|
|
log_error("Failed to parse message: %s", strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
int bus_log_create_error(int r) {
|
|
log_error("Failed to create message: %s", strerror(-r));
|
|
return r;
|
|
}
|
|
|
|
int bus_parse_unit_info(sd_bus_message *message, UnitInfo *u) {
|
|
assert(message);
|
|
assert(u);
|
|
|
|
return sd_bus_message_read(
|
|
message,
|
|
"(ssssssouso)",
|
|
&u->id,
|
|
&u->description,
|
|
&u->load_state,
|
|
&u->active_state,
|
|
&u->sub_state,
|
|
&u->following,
|
|
&u->unit_path,
|
|
&u->job_id,
|
|
&u->job_type,
|
|
&u->job_path);
|
|
}
|
|
|
|
int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) {
|
|
assert(m);
|
|
|
|
if (r < 0) {
|
|
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
|
|
sd_bus_reply_method_errno(m, r, error);
|
|
|
|
} else if (sd_bus_error_is_set(error)) {
|
|
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
|
|
sd_bus_reply_method_error(m, error);
|
|
|
|
} else
|
|
return r;
|
|
|
|
log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s",
|
|
bus_message_type_to_string(m->header->type),
|
|
strna(m->sender),
|
|
strna(m->path),
|
|
strna(m->interface),
|
|
strna(m->member),
|
|
strna(m->root_container.signature),
|
|
bus_error_message(error, r));
|
|
|
|
return 1;
|
|
}
|