((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) ? 0 : KDBUS_MSG_FLAGS_EXPECT_REPLY) |
((m->header->flags & BUS_MESSAGE_NO_AUTO_START) ? KDBUS_MSG_FLAGS_NO_AUTO_START : 0);
- if (well_known) {
+ if (well_known)
/* verify_destination_id will usually be 0, which makes the kernel driver only look
* at the provided well-known name. Otherwise, the kernel will make sure the provided
* destination id matches the owner of the provided weel-known-name, and fail if they
* differ. Currently, this is only needed for bus-proxyd. */
m->kdbus->dst_id = m->verify_destination_id;
- } else {
+ else
m->kdbus->dst_id = destination ? unique : KDBUS_DST_ID_BROADCAST;
- }
m->kdbus->payload_type = KDBUS_PAYLOAD_DBUS;
m->kdbus->cookie = (uint64_t) m->header->serial;
m->kdbus->priority = m->priority;
- if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) {
+ if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
m->kdbus->cookie_reply = m->reply_cookie;
- } else {
+ else {
struct timespec now;
assert_se(clock_gettime(CLOCK_MONOTONIC_COARSE, &now) == 0);
return r;
}
+static void bus_message_set_sender_driver(sd_bus *bus, sd_bus_message *m) {
+ assert(bus);
+ assert(m);
+
+ m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus";
+ m->creds.well_known_names_driver = true;
+ m->creds.mask |= (SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES) & bus->creds_mask;
+}
+
static void unset_memfds(struct sd_bus_message *m) {
struct bus_body_part *part;
unsigned i;
}
if (bus->creds_mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {
- r = strv_extend(&m->creds.well_known_names, d->name.name);
- if (r < 0)
+ char **wkn;
+ size_t n;
+
+ /* We just extend the array here, but
+ * do not allocate the strings inside
+ * of it, instead we just point to our
+ * buffer directly. */
+ n = strv_length(m->creds.well_known_names);
+ wkn = realloc(m->creds.well_known_names, (n + 2) * sizeof(char*));
+ if (!wkn) {
+ r = -ENOMEM;
goto fail;
+ }
+
+ wkn[n] = d->name.name;
+ wkn[n+1] = NULL;
+ m->creds.well_known_names = wkn;
m->creds.mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
}
case KDBUS_ITEM_AUXGROUPS:
if (bus->creds_mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
- size_t i, n;
- uid_t *u;
- n = (d->size - offsetof(struct kdbus_item, data64)) / sizeof(uint64_t);
- u = new(uid_t, n);
- if (!u) {
- r = -ENOMEM;
- goto fail;
- }
-
- for (i = 0; i < n; i++)
- u[i] = (uid_t) d->data64[i];
-
- m->creds.supplementary_gids = u;
- m->creds.n_supplementary_gids = n;
+ assert_cc(sizeof(gid_t) == sizeof(uint32_t));
+ m->creds.n_supplementary_gids = (d->size - offsetof(struct kdbus_item, data32)) / sizeof(uint32_t);
+ m->creds.supplementary_gids = (gid_t*) d->data32;
m->creds.mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
}
if (r < 0)
goto fail;
+ /* Refuse messages if kdbus and dbus1 cookie doesn't match up */
+ if ((uint64_t) m->header->serial != k->cookie) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse messages where the reply flag doesn't match up */
+ if (!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) != !!(k->flags & KDBUS_MSG_FLAGS_EXPECT_REPLY)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse reply messages where the reply cookie doesn't match up */
+ if ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) && m->reply_cookie != k->cookie_reply) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse messages where the autostart flag doesn't match up */
+ if (!(m->header->flags & BUS_MESSAGE_NO_AUTO_START) != !(k->flags & KDBUS_MSG_FLAGS_NO_AUTO_START)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
/* Override information from the user header with data from the kernel */
if (k->src_id == KDBUS_SRC_ID_KERNEL)
- m->sender = m->creds.unique_name = (char*) "org.freedesktop.DBus";
+ bus_message_set_sender_driver(bus, m);
else {
snprintf(m->sender_buffer, sizeof(m->sender_buffer), ":1.%llu", (unsigned long long) k->src_id);
m->sender = m->creds.unique_name = m->sender_buffer;
if (r < 0)
return r;
- m->sender = "org.freedesktop.DBus";
+ bus_message_set_sender_driver(bus, m);
r = bus_seal_synthetic_message(bus, m);
if (r < 0)
if (r < 0)
return r;
- m->sender = "org.freedesktop.DBus";
+ bus_message_set_sender_driver(bus, m);
r = bus_seal_synthetic_message(bus, m);
if (r < 0)
_cleanup_free_ char *path = NULL;
struct kdbus_cmd_make *make;
struct kdbus_item *n;
- size_t size;
+ const char *name;
int fd;
fd = bus_kernel_open_bus_fd(bus_name, &path);
if (fd < 0)
return fd;
- size = ALIGN8(offsetof(struct kdbus_cmd_make, items));
- size += ALIGN8(offsetof(struct kdbus_item, str) + strlen(ep_name) + 1);
-
- make = alloca0_align(size, 8);
- make->size = size;
+ make = alloca0_align(ALIGN8(offsetof(struct kdbus_cmd_make, items)) +
+ ALIGN8(offsetof(struct kdbus_item, str) + DECIMAL_STR_MAX(uid_t) + 1 + strlen(ep_name) + 1),
+ 8);
+ make->size = ALIGN8(offsetof(struct kdbus_cmd_make, items));
make->flags = KDBUS_MAKE_ACCESS_WORLD;
n = make->items;
-
+ sprintf(n->str, UID_FMT "-%s", getuid(), ep_name);
+ n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1;
n->type = KDBUS_ITEM_MAKE_NAME;
- n->size = offsetof(struct kdbus_item, str) + strlen(ep_name) + 1;
- strcpy(n->str, ep_name);
+ make->size += ALIGN8(n->size);
+ name = n->str;
if (ioctl(fd, KDBUS_CMD_ENDPOINT_MAKE, make) < 0) {
safe_close(fd);
if (ep_path) {
char *p;
- p = strjoin(dirname(path), "/", ep_name, NULL);
+ p = strjoin(dirname(path), "/", name, NULL);
if (!p) {
safe_close(fd);
return -ENOMEM;
(accept_fd ? KDBUS_HELLO_ACCEPT_FD : 0);
hello->pool_size = KDBUS_POOL_SIZE;
hello->attach_flags_send = _KDBUS_ATTACH_ANY;
- hello->attach_flags_recv = _KDBUS_ATTACH_ALL;
+ hello->attach_flags_recv = _KDBUS_ATTACH_ANY;
if (ioctl(fd, KDBUS_CMD_HELLO, hello) < 0)
return -errno;
~ianmdlvl / elogind.git / blobdiff