-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include <valgrind/memcheck.h>
#endif
-#include <stddef.h>
#include <errno.h>
+#include <stddef.h>
-#include "strv.h"
#include "sd-bus.h"
+
+#include "alloc-util.h"
+#include "bus-bloom.h"
+#include "bus-control.h"
#include "bus-internal.h"
#include "bus-message.h"
-#include "bus-control.h"
-#include "bus-bloom.h"
#include "bus-util.h"
-#include "capability.h"
+#include "capability-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
_public_ int sd_bus_get_unique_name(sd_bus *bus, const char **unique) {
int r;
assert_return(unique, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!bus->bus_client)
+ return -EINVAL;
+
r = bus_ensure_running(bus);
if (r < 0)
return r;
}
static int bus_request_name_dbus1(sd_bus *bus, const char *name, uint64_t flags) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
uint32_t ret, param = 0;
int r;
_public_ int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags) {
assert_return(bus, -EINVAL);
assert_return(name, -EINVAL);
- assert_return(bus->bus_client, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(!(flags & ~(SD_BUS_NAME_ALLOW_REPLACEMENT|SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_QUEUE)), -EINVAL);
assert_return(service_name_is_valid(name), -EINVAL);
assert_return(name[0] != ':', -EINVAL);
+ if (!bus->bus_client)
+ return -EINVAL;
+
/* Don't allow requesting the special driver and local names */
if (STR_IN_SET(name, "org.freedesktop.DBus", "org.freedesktop.DBus.Local"))
return -EINVAL;
}
static int bus_release_name_dbus1(sd_bus *bus, const char *name) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
uint32_t ret;
int r;
_public_ int sd_bus_release_name(sd_bus *bus, const char *name) {
assert_return(bus, -EINVAL);
assert_return(name, -EINVAL);
- assert_return(bus->bus_client, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(service_name_is_valid(name), -EINVAL);
assert_return(name[0] != ':', -EINVAL);
+ if (!bus->bus_client)
+ return -EINVAL;
+
/* Don't allow releasing the special driver and local names */
if (STR_IN_SET(name, "org.freedesktop.DBus", "org.freedesktop.DBus.Local"))
return -EINVAL;
name_list = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
KDBUS_FOREACH(name, name_list, cmd.list_size) {
-
struct kdbus_item *item;
- const char *entry_name = NULL;
- if ((flags & KDBUS_LIST_UNIQUE) && name->id != previous_id) {
+ if ((flags & KDBUS_LIST_UNIQUE) && name->id != previous_id && !(name->flags & KDBUS_HELLO_ACTIVATOR)) {
char *n;
- if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat"
+ if (asprintf(&n, ":1.%llu", name->id) < 0) {
r = -ENOMEM;
goto fail;
}
+#pragma GCC diagnostic pop
r = strv_consume(x, n);
if (r < 0)
previous_id = name->id;
}
- KDBUS_ITEM_FOREACH(item, name, items)
- if (item->type == KDBUS_ITEM_OWNED_NAME)
- entry_name = item->name.name;
-
- if (entry_name && service_name_is_valid(entry_name)) {
- r = strv_extend(x, entry_name);
- if (r < 0) {
- r = -ENOMEM;
- goto fail;
+ KDBUS_ITEM_FOREACH(item, name, items) {
+ if (item->type == KDBUS_ITEM_OWNED_NAME) {
+ if (service_name_is_valid(item->name.name)) {
+ r = strv_extend(x, item->name.name);
+ if (r < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
}
}
}
}
static int bus_list_names_dbus1(sd_bus *bus, char ***acquired, char ***activatable) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_strv_free_ char **x = NULL, **y = NULL;
int r;
assert_return(acquired || activatable, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!bus->bus_client)
+ return -EINVAL;
+
if (!BUS_IS_OPEN(bus->state))
return -ENOTCONN;
c->mask |= SD_BUS_CREDS_TID;
}
- if (mask & SD_BUS_CREDS_PPID && item->pids.ppid > 0) {
- c->ppid = (pid_t) item->pids.ppid;
- c->mask |= SD_BUS_CREDS_PPID;
+ if (mask & SD_BUS_CREDS_PPID) {
+ if (item->pids.ppid > 0) {
+ c->ppid = (pid_t) item->pids.ppid;
+ c->mask |= SD_BUS_CREDS_PPID;
+ } else if (item->pids.pid == 1) {
+ /* The structure doesn't
+ * really distinguish the case
+ * where a process has no
+ * parent and where we don't
+ * know it because it could
+ * not be translated due to
+ * namespaces. However, we
+ * know that PID 1 has no
+ * parent process, hence let's
+ * patch that in, manually. */
+ c->ppid = 0;
+ c->mask |= SD_BUS_CREDS_PPID;
+ }
}
break;
break;
case KDBUS_ITEM_AUDIT:
- if (mask & SD_BUS_CREDS_AUDIT_SESSION_ID && (uint32_t) item->audit.sessionid != (uint32_t) -1) {
+ if (mask & SD_BUS_CREDS_AUDIT_SESSION_ID) {
c->audit_session_id = (uint32_t) item->audit.sessionid;
c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
}
- if (mask & SD_BUS_CREDS_AUDIT_LOGIN_UID && (uid_t) item->audit.loginuid != UID_INVALID) {
+ if (mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
c->audit_login_uid = (uid_t) item->audit.loginuid;
c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
}
bool allow_activator,
sd_bus_creds **creds) {
- _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
struct kdbus_cmd_info *cmd;
struct kdbus_info *conn_info;
size_t size, l;
(mask & (SD_BUS_CREDS_PPID|
SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS|
SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
}
if (mask & SD_BUS_CREDS_UNIQUE_NAME) {
- if (asprintf(&c->unique_name, ":1.%llu", (unsigned long long) conn_info->id) < 0) {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat"
+ if (asprintf(&c->unique_name, ":1.%llu", conn_info->id) < 0) {
r = -ENOMEM;
goto fail;
}
+#pragma GCC diagnostic pop
c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
}
uint64_t mask,
sd_bus_creds **creds) {
- _cleanup_bus_message_unref_ sd_bus_message *reply_unique = NULL, *reply = NULL;
- _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_unique = NULL, *reply = NULL;
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
const char *unique = NULL;
pid_t pid = 0;
int r;
((mask & SD_BUS_CREDS_AUGMENT) &&
(mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS|
SD_BUS_CREDS_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
}
if (mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
const void *p = NULL;
size_t sz = 0;
assert_return(mask == 0 || creds, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(service_name_is_valid(name), -EINVAL);
- assert_return(bus->bus_client, -ENODATA);
+
+ if (!bus->bus_client)
+ return -EINVAL;
if (streq(name, "org.freedesktop.DBus.Local"))
return -EINVAL;
}
static int bus_get_owner_creds_kdbus(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) {
- _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
struct kdbus_cmd_info cmd = {
.size = sizeof(struct kdbus_cmd_info),
};
(mask & (SD_BUS_CREDS_PPID|
SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID|
+ SD_BUS_CREDS_SUPPLEMENTARY_GIDS|
SD_BUS_CREDS_COMM|SD_BUS_CREDS_TID_COMM|SD_BUS_CREDS_EXE|SD_BUS_CREDS_CMDLINE|
SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID|
SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS|
}
static int bus_get_owner_creds_dbus1(sd_bus *bus, uint64_t mask, sd_bus_creds **ret) {
- _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *c = NULL;
pid_t pid = 0;
+ bool do_label;
int r;
- if (!bus->ucred_valid && !isempty(bus->label))
+ assert(bus);
+
+ do_label = bus->label && (mask & SD_BUS_CREDS_SELINUX_CONTEXT);
+
+ /* Avoid allocating anything if we have no chance of returning useful data */
+ if (!bus->ucred_valid && !do_label)
return -ENODATA;
c = bus_creds_new();
}
}
- if (!isempty(bus->label) && (mask & SD_BUS_CREDS_SELINUX_CONTEXT)) {
+ if (do_label) {
c->label = strdup(bus->label);
if (!c->label)
return -ENOMEM;
item->name_change.old_id.id = old_owner_id;
item->name_change.new_id.id = new_owner_id;
- if (name)
- memcpy(item->name_change.name, name, l);
+ memcpy_safe(item->name_change.name, name, l);
/* If the old name is unset or empty, then
* this can match against added names */
- if (!old_owner || old_owner[0] == 0) {
+ if (isempty(old_owner)) {
item->type = KDBUS_ITEM_NAME_ADD;
r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
/* If the new name is unset or empty, then
* this can match against removed names */
- if (!new_owner || new_owner[0] == 0) {
+ if (isempty(new_owner)) {
item->type = KDBUS_ITEM_NAME_REMOVE;
r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
/* If the old name is unset or empty, then this can
* match against added ids */
- if (!old_owner || old_owner[0] == 0) {
+ if (isempty(old_owner)) {
item->type = KDBUS_ITEM_ID_ADD;
+ if (!isempty(new_owner))
+ item->id_change.id = new_owner_id;
r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
if (r < 0)
/* If thew new name is unset or empty, then this can
* match against removed ids */
- if (!new_owner || new_owner[0] == 0) {
+ if (isempty(new_owner)) {
item->type = KDBUS_ITEM_ID_REMOVE;
+ if (!isempty(old_owner))
+ item->id_change.id = old_owner_id;
r = ioctl(bus->input_fd, KDBUS_CMD_MATCH_ADD, m);
if (r < 0)
size_t sz;
const char *sender = NULL;
size_t sender_length = 0;
- uint64_t src_id = KDBUS_MATCH_ID_ANY;
+ uint64_t src_id = KDBUS_MATCH_ID_ANY, dst_id = KDBUS_MATCH_ID_ANY;
bool using_bloom = false;
unsigned i;
bool matches_name_change = true;
break;
case BUS_MATCH_PATH_NAMESPACE:
- if (!streq(c->value_str, "/")) {
- bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "path-slash-prefix", c->value_str);
- using_bloom = true;
- }
+ bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, "path-slash-prefix", c->value_str);
+ using_bloom = true;
break;
case BUS_MATCH_ARG...BUS_MATCH_ARG_LAST: {
break;
}
- case BUS_MATCH_ARG_PATH...BUS_MATCH_ARG_PATH_LAST: {
- char buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
+ case BUS_MATCH_ARG_HAS...BUS_MATCH_ARG_HAS_LAST: {
+ char buf[sizeof("arg")-1 + 2 + sizeof("-has")];
- xsprintf(buf, "arg%i-slash-prefix", c->type - BUS_MATCH_ARG_PATH);
+ xsprintf(buf, "arg%i-has", c->type - BUS_MATCH_ARG_HAS);
bloom_add_pair(bloom, bus->bloom_size, bus->bloom_n_hash, buf, c->value_str);
using_bloom = true;
break;
}
+ case BUS_MATCH_ARG_PATH...BUS_MATCH_ARG_PATH_LAST:
+ /*
+ * XXX: DBus spec defines arg[0..63]path= matching to be
+ * a two-way glob. That is, if either string is a prefix
+ * of the other, it matches.
+ * This is really hard to realize in bloom-filters, as
+ * we would have to create a bloom-match for each prefix
+ * of @c->value_str. This is excessive, hence we just
+ * ignore all those matches and accept everything from
+ * the kernel. People should really avoid those matches.
+ * If they're used in real-life some day, we will have
+ * to properly support multiple-matches here.
+ */
+ break;
+
case BUS_MATCH_ARG_NAMESPACE...BUS_MATCH_ARG_NAMESPACE_LAST: {
char buf[sizeof("arg")-1 + 2 + sizeof("-dot-prefix")];
}
case BUS_MATCH_DESTINATION:
- /* The bloom filter does not include
- the destination, since it is only
- available for broadcast messages
- which do not carry a destination
- since they are undirected. */
+ /*
+ * Kernel only supports matching on destination IDs, but
+ * not on destination names. So just skip the
+ * destination name restriction and verify it in
+ * user-space on retrieval.
+ */
+ r = bus_kernel_parse_unique_name(c->value_str, &dst_id);
+ if (r < 0)
+ return r;
+ else if (r > 0)
+ sz += ALIGN8(offsetof(struct kdbus_item, id) + sizeof(uint64_t));
+
+ /* if not a broadcast, it cannot be a name-change */
+ if (r <= 0 || dst_id != KDBUS_DST_ID_BROADCAST)
+ matches_name_change = false;
+
break;
case BUS_MATCH_ROOT:
item = KDBUS_ITEM_NEXT(item);
}
+ if (dst_id != KDBUS_MATCH_ID_ANY) {
+ item->size = offsetof(struct kdbus_item, id) + sizeof(uint64_t);
+ item->type = KDBUS_ITEM_DST_ID;
+ item->id = dst_id;
+ item = KDBUS_ITEM_NEXT(item);
+ }
+
if (using_bloom) {
item->size = offsetof(struct kdbus_item, data64) + bus->bloom_size;
item->type = KDBUS_ITEM_BLOOM_MASK;
assert(bus);
+ if (!bus->bus_client)
+ return -EINVAL;
+
if (bus->is_kernel)
return bus_add_match_internal_kernel(bus, components, n_components, cookie);
else
assert(bus);
+ if (!bus->bus_client)
+ return -EINVAL;
+
if (bus->is_kernel)
return bus_remove_match_internal_kernel(bus, cookie);
else
return bus_remove_match_internal_dbus1(bus, match);
}
+#if 0 /// UNNEEDED by elogind
_public_ int sd_bus_get_name_machine_id(sd_bus *bus, const char *name, sd_id128_t *machine) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL;
const char *mid;
int r;
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(service_name_is_valid(name), -EINVAL);
+ if (!bus->bus_client)
+ return -EINVAL;
+
if (!BUS_IS_OPEN(bus->state))
return -ENOTCONN;
return sd_id128_from_string(mid, machine);
}
+#endif // 0
~ianmdlvl / elogind.git / blobdiff