mirror of
https://github.com/systemd/systemd-stable.git
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Drop bus-policy bits
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
parent
4bc5d27b94
commit
a6c97fc460
@ -1,180 +0,0 @@
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/***
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This file is part of systemd.
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Copyright 2014 Daniel Mack
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdlib.h>
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#include "alloc-util.h"
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#include "bus-kernel.h"
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#include "bus-policy.h"
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#include "kdbus.h"
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#include "string-table.h"
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#include "user-util.h"
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#include "util.h"
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int bus_kernel_translate_access(BusPolicyAccess access) {
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assert(access >= 0);
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assert(access < _BUS_POLICY_ACCESS_MAX);
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switch (access) {
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case BUS_POLICY_ACCESS_SEE:
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return KDBUS_POLICY_SEE;
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case BUS_POLICY_ACCESS_TALK:
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return KDBUS_POLICY_TALK;
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case BUS_POLICY_ACCESS_OWN:
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return KDBUS_POLICY_OWN;
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default:
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assert_not_reached("Unknown policy access");
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}
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}
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int bus_kernel_translate_policy(const BusNamePolicy *policy, struct kdbus_item *item) {
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int r;
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assert(policy);
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assert(item);
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switch (policy->type) {
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case BUSNAME_POLICY_TYPE_USER: {
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const char *user = policy->name;
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uid_t uid;
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r = get_user_creds(&user, &uid, NULL, NULL, NULL);
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if (r < 0)
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return r;
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item->policy_access.type = KDBUS_POLICY_ACCESS_USER;
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item->policy_access.id = uid;
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break;
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}
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case BUSNAME_POLICY_TYPE_GROUP: {
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const char *group = policy->name;
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gid_t gid;
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r = get_group_creds(&group, &gid);
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if (r < 0)
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return r;
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item->policy_access.type = KDBUS_POLICY_ACCESS_GROUP;
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item->policy_access.id = gid;
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break;
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}
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default:
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assert_not_reached("Unknown policy type");
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}
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item->policy_access.access = bus_kernel_translate_access(policy->access);
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return 0;
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}
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int bus_kernel_make_starter(
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int fd,
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const char *name,
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bool activating,
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bool accept_fd,
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BusNamePolicy *policy,
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BusPolicyAccess world_policy) {
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struct kdbus_cmd_free cmd_free = { .size = sizeof(cmd_free) };
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struct kdbus_cmd_hello *hello;
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struct kdbus_item *n;
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size_t policy_cnt = 0;
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BusNamePolicy *po;
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size_t size;
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int r;
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assert(fd >= 0);
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assert(name);
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LIST_FOREACH(policy, po, policy)
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policy_cnt++;
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if (world_policy >= 0)
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policy_cnt++;
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size = offsetof(struct kdbus_cmd_hello, items) +
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ALIGN8(offsetof(struct kdbus_item, str) + strlen(name) + 1) +
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policy_cnt * ALIGN8(offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access));
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hello = alloca0_align(size, 8);
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n = hello->items;
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strcpy(n->str, name);
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n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1;
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n->type = KDBUS_ITEM_NAME;
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n = KDBUS_ITEM_NEXT(n);
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LIST_FOREACH(policy, po, policy) {
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n->type = KDBUS_ITEM_POLICY_ACCESS;
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n->size = offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access);
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r = bus_kernel_translate_policy(po, n);
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if (r < 0)
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return r;
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n = KDBUS_ITEM_NEXT(n);
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}
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if (world_policy >= 0) {
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n->type = KDBUS_ITEM_POLICY_ACCESS;
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n->size = offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access);
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n->policy_access.type = KDBUS_POLICY_ACCESS_WORLD;
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n->policy_access.access = bus_kernel_translate_access(world_policy);
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}
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hello->size = size;
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hello->flags =
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(activating ? KDBUS_HELLO_ACTIVATOR : KDBUS_HELLO_POLICY_HOLDER) |
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(accept_fd ? KDBUS_HELLO_ACCEPT_FD : 0);
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hello->pool_size = KDBUS_POOL_SIZE;
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hello->attach_flags_send = _KDBUS_ATTACH_ANY;
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hello->attach_flags_recv = _KDBUS_ATTACH_ANY;
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if (ioctl(fd, KDBUS_CMD_HELLO, hello) < 0) {
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if (errno == ENOTTY) /* Major API change */
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return -ESOCKTNOSUPPORT;
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return -errno;
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}
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/* not interested in any output values */
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cmd_free.offset = hello->offset;
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(void) ioctl(fd, KDBUS_CMD_FREE, &cmd_free);
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/* The higher 32bit of the bus_flags fields are considered
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* 'incompatible flags'. Refuse them all for now. */
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if (hello->bus_flags > 0xFFFFFFFFULL)
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return -ESOCKTNOSUPPORT;
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return fd;
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}
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static const char* const bus_policy_access_table[_BUS_POLICY_ACCESS_MAX] = {
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[BUS_POLICY_ACCESS_SEE] = "see",
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[BUS_POLICY_ACCESS_TALK] = "talk",
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[BUS_POLICY_ACCESS_OWN] = "own",
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};
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DEFINE_STRING_TABLE_LOOKUP(bus_policy_access, BusPolicyAccess);
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@ -1,64 +0,0 @@
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Daniel Mack
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "kdbus.h"
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#include "list.h"
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#include "macro.h"
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typedef struct BusNamePolicy BusNamePolicy;
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typedef enum BusPolicyAccess {
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BUS_POLICY_ACCESS_SEE,
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BUS_POLICY_ACCESS_TALK,
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BUS_POLICY_ACCESS_OWN,
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_BUS_POLICY_ACCESS_MAX,
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_BUS_POLICY_ACCESS_INVALID = -1
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} BusPolicyAccess;
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typedef enum BusNamePolicyType {
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BUSNAME_POLICY_TYPE_USER,
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BUSNAME_POLICY_TYPE_GROUP,
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_BUSNAME_POLICY_TYPE_MAX,
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_BUSNAME_POLICY_TYPE_INVALID = -1
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} BusNamePolicyType;
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struct BusNamePolicy {
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BusNamePolicyType type;
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BusPolicyAccess access;
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char *name;
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LIST_FIELDS(BusNamePolicy, policy);
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};
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int bus_kernel_translate_access(BusPolicyAccess access);
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int bus_kernel_translate_policy(const BusNamePolicy *policy, struct kdbus_item *item);
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const char* bus_policy_access_to_string(BusPolicyAccess i) _const_;
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BusPolicyAccess bus_policy_access_from_string(const char *s) _pure_;
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int bus_kernel_make_starter(
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int fd,
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const char *name,
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bool activating,
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bool accept_fd,
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BusNamePolicy *policy,
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BusPolicyAccess world_policy);
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@ -15,8 +15,6 @@ libcore_la_sources = '''
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service.h
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socket.c
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socket.h
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bus-policy.c
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bus-policy.h
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target.c
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target.h
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device.c
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@ -1,14 +0,0 @@
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<user>mybususer</user>
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<listen>unix:path=/foo/bar</listen>
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<listen>tcp:port=1234</listen>
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<servicedir>/usr/share/foo</servicedir>
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<policy context="default">
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<allow user="*"/>
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<deny own="*"/>
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<allow own_prefix="org.freedesktop.ManySystems"/>
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</policy>
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</busconfig>
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@ -1,14 +0,0 @@
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<?xml version="1.0"?> <!--*-nxml-*-->
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<policy context="default">
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<allow user="*"/>
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<deny user="1"/>
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<deny group="1"/>
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</policy>
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</busconfig>
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@ -1,61 +0,0 @@
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<user>mybususer</user>
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<listen>unix:path=/foo/bar</listen>
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<listen>tcp:port=1234</listen>
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<includedir>basic.d</includedir>
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<standard_session_servicedirs />
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<servicedir>/usr/share/foo</servicedir>
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<include ignore_missing="yes">nonexistent.conf</include>
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<policy context="default">
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<allow user="*"/>
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<deny send_interface="org.freedesktop.System" send_member="Reboot"/>
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<deny receive_interface="org.freedesktop.System" receive_member="Reboot"/>
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<deny send_path="/foo/bar/SystemObjectThing" send_member="Reboot"/>
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<deny own="org.freedesktop.System"/>
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<deny own_prefix="org.freedesktop.ManySystems"/>
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<deny send_destination="org.freedesktop.System"/>
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<deny receive_sender="org.freedesktop.System"/>
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<deny user="root"/>
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<deny group="bin"/>
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<allow send_type="error"/>
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<allow send_type="method_call"/>
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<allow send_type="method_return"/>
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<allow send_type="signal"/>
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<deny send_destination="org.freedesktop.Bar" send_interface="org.freedesktop.Foo"/>
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<deny send_destination="org.freedesktop.Bar" send_interface="org.freedesktop.Foo" send_type="method_call"/>
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</policy>
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<policy context="mandatory">
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<allow user="*"/>
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<deny send_interface="org.freedesktop.System" send_member="Reboot"/>
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<deny receive_interface="org.freedesktop.System" receive_member="Reboot"/>
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<deny send_path="/foo/bar/SystemObjectThing" send_member="Reboot"/>
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<deny own="org.freedesktop.System"/>
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<deny own_prefix="org.freedesktop.ManySystems"/>
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<deny send_destination="org.freedesktop.System"/>
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<deny receive_sender="org.freedesktop.System"/>
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<deny user="root"/>
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<deny group="bin"/>
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<allow send_type="error"/>
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<allow send_type="method_call"/>
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<allow send_type="method_return"/>
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<allow send_type="signal"/>
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<deny send_destination="org.freedesktop.Bar" send_interface="org.freedesktop.Foo"/>
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<deny send_destination="org.freedesktop.Bar" send_interface="org.freedesktop.Foo" send_type="method_call"/>
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</policy>
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<limit name="max_incoming_bytes">5000</limit>
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<limit name="max_outgoing_bytes">5000</limit>
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<limit name="max_message_size">300</limit>
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<limit name="service_start_timeout">5000</limit>
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<limit name="auth_timeout">6000</limit>
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<limit name="max_completed_connections">50</limit>
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<limit name="max_incomplete_connections">80</limit>
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<limit name="max_connections_per_user">64</limit>
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<limit name="max_pending_service_starts">64</limit>
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<limit name="max_names_per_connection">256</limit>
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<limit name="max_match_rules_per_connection">512</limit>
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</busconfig>
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@ -1,17 +0,0 @@
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<?xml version="1.0"?> <!--*-nxml-*-->
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<policy context="default">
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<deny send_type="method_call"/>
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<deny send_destination="org.test.test1"/>
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<allow send_destination="org.test.test1" send_interface="org.test.int1"/>
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<allow send_destination="org.test.test1" send_interface="org.test.int2"/>
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<allow receive_sender="org.test.test3" receive_interface="org.test.int3" receive_member="Member111"/>
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</policy>
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</busconfig>
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@ -1,24 +0,0 @@
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<?xml version="1.0"?> <!--*-nxml-*-->
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<policy context="default">
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<allow own="org.test.test1"/>
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</policy>
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<policy context="mandatory">
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<deny own="org.test.test3"/>
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</policy>
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<policy user="root">
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<allow own="org.test.test2"/>
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<allow own="org.test.test3"/>
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</policy>
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<policy user="1">
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<allow own="org.test.test4"/>
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</policy>
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</busconfig>
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@ -1,15 +0,0 @@
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<?xml version="1.0"?> <!--*-nxml-*-->
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<policy context="default">
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<allow send_type="signal"/>
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</policy>
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<policy user="1">
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<deny send_type="signal"/>
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</policy>
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</busconfig>
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@ -1,20 +0,0 @@
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<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<!-- The following demonstrates how to punch holes in a default deny-all
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policy so that a particular user can own a service, and other
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connections can get messages from it -->
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<!-- Only root can own the FooService service, and
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this user can only send the one kind of message -->
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<policy user="root">
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<allow own="org.foo.FooService"/>
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<allow send_interface="org.foo.FooBroadcastInterface"/>
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</policy>
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<!-- Allow any connection to receive the message, but
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only if the message is sent by the owner of FooService -->
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<policy context="default">
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<allow receive_interface="org.foo.FooBroadcastInterface" receive_sender="org.foo.FooService"/>
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</policy>
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</busconfig>
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@ -126,13 +126,6 @@ test_data_files = '''
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test-execute/exec-read-only-path-succeed.service
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test-execute/exec-privatedevices-yes-capability-sys-rawio.service
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test-execute/exec-privatedevices-no-capability-sys-rawio.service
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bus-policy/hello.conf
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bus-policy/methods.conf
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bus-policy/ownerships.conf
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bus-policy/signals.conf
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bus-policy/check-own-rules.conf
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bus-policy/many-rules.conf
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bus-policy/test.conf
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hwdb/10-bad.hwdb
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journal-data/journal-1.txt
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journal-data/journal-2.txt
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