| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2013 Tom Gundersen <teg@jklm.no> |
| |
| 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 <linux/if.h> |
| #include <linux/fib_rules.h> |
| #include <stdio_ext.h> |
| |
| #include "sd-daemon.h" |
| #include "sd-netlink.h" |
| |
| #include "alloc-util.h" |
| #include "bus-util.h" |
| #include "conf-parser.h" |
| #include "def.h" |
| #include "dns-domain.h" |
| #include "fd-util.h" |
| #include "fileio.h" |
| #include "libudev-private.h" |
| #include "local-addresses.h" |
| #include "netlink-util.h" |
| #include "networkd-manager.h" |
| #include "ordered-set.h" |
| #include "path-util.h" |
| #include "set.h" |
| #include "udev-util.h" |
| #include "virt.h" |
| |
| /* use 8 MB for receive socket kernel queue. */ |
| #define RCVBUF_SIZE (8*1024*1024) |
| |
| const char* const network_dirs[] = { |
| "/etc/systemd/network", |
| "/run/systemd/network", |
| "/usr/lib/systemd/network", |
| #if HAVE_SPLIT_USR |
| "/lib/systemd/network", |
| #endif |
| NULL}; |
| |
| static int setup_default_address_pool(Manager *m) { |
| AddressPool *p; |
| int r; |
| |
| assert(m); |
| |
| /* Add in the well-known private address ranges. */ |
| |
| r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7); |
| if (r < 0) |
| return r; |
| |
| r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16); |
| if (r < 0) |
| return r; |
| |
| r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12); |
| if (r < 0) |
| return r; |
| |
| r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int manager_reset_all(Manager *m) { |
| Link *link; |
| Iterator i; |
| int r; |
| |
| assert(m); |
| |
| HASHMAP_FOREACH(link, m->links, i) { |
| r = link_carrier_reset(link); |
| if (r < 0) |
| log_link_warning_errno(link, r, "Could not reset carrier: %m"); |
| } |
| |
| return 0; |
| } |
| |
| static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
| Manager *m = userdata; |
| int b, r; |
| |
| assert(message); |
| assert(m); |
| |
| r = sd_bus_message_read(message, "b", &b); |
| if (r < 0) { |
| log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m"); |
| return 0; |
| } |
| |
| if (b) |
| return 0; |
| |
| log_debug("Coming back from suspend, resetting all connections..."); |
| |
| (void) manager_reset_all(m); |
| |
| return 0; |
| } |
| |
| static int on_connected(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
| Manager *m = userdata; |
| |
| assert(message); |
| assert(m); |
| |
| /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */ |
| if (m->dynamic_hostname) |
| (void) manager_set_hostname(m, m->dynamic_hostname); |
| if (m->dynamic_timezone) |
| (void) manager_set_timezone(m, m->dynamic_timezone); |
| |
| return 0; |
| } |
| |
| int manager_connect_bus(Manager *m) { |
| int r; |
| |
| assert(m); |
| |
| if (m->bus) |
| return 0; |
| |
| r = bus_open_system_watch_bind(&m->bus); |
| if (r < 0) |
| return log_error_errno(r, "Failed to connect to bus: %m"); |
| |
| r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add manager object vtable: %m"); |
| |
| r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add link object vtable: %m"); |
| |
| r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add link enumerator: %m"); |
| |
| r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add network object vtable: %m"); |
| |
| r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add network enumerator: %m"); |
| |
| r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.network1", 0, NULL, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to request name: %m"); |
| |
| r = sd_bus_attach_event(m->bus, m->event, 0); |
| if (r < 0) |
| return log_error_errno(r, "Failed to attach bus to event loop: %m"); |
| |
| r = sd_bus_match_signal_async( |
| m->bus, |
| &m->connected_slot, |
| "org.freedesktop.DBus.Local", |
| NULL, |
| "org.freedesktop.DBus.Local", |
| "Connected", |
| on_connected, NULL, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to request match on Connected signal: %m"); |
| |
| r = sd_bus_match_signal_async( |
| m->bus, |
| &m->prepare_for_sleep_slot, |
| "org.freedesktop.login1", |
| "/org/freedesktop/login1", |
| "org.freedesktop.login1.Manager", |
| "PrepareForSleep", |
| match_prepare_for_sleep, NULL, m); |
| if (r < 0) |
| log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| static int manager_udev_process_link(Manager *m, struct udev_device *device) { |
| Link *link = NULL; |
| int r, ifindex; |
| |
| assert(m); |
| assert(device); |
| |
| if (!streq_ptr(udev_device_get_action(device), "add")) |
| return 0; |
| |
| ifindex = udev_device_get_ifindex(device); |
| if (ifindex <= 0) { |
| log_debug("Ignoring udev ADD event for device with invalid ifindex"); |
| return 0; |
| } |
| |
| r = link_get(m, ifindex, &link); |
| if (r == -ENODEV) |
| return 0; |
| else if (r < 0) |
| return r; |
| |
| r = link_initialized(link, device); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
| Manager *m = userdata; |
| struct udev_monitor *monitor = m->udev_monitor; |
| _cleanup_udev_device_unref_ struct udev_device *device = NULL; |
| |
| device = udev_monitor_receive_device(monitor); |
| if (!device) |
| return -ENOMEM; |
| |
| (void) manager_udev_process_link(m, device); |
| |
| return 0; |
| } |
| |
| static int manager_connect_udev(Manager *m) { |
| int r; |
| |
| /* udev does not initialize devices inside containers, |
| * so we rely on them being already initialized before |
| * entering the container */ |
| if (detect_container() > 0) |
| return 0; |
| |
| m->udev = udev_new(); |
| if (!m->udev) |
| return -ENOMEM; |
| |
| m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev"); |
| if (!m->udev_monitor) |
| return -ENOMEM; |
| |
| r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL); |
| if (r < 0) |
| return log_error_errno(r, "Could not add udev monitor filter: %m"); |
| |
| r = udev_monitor_enable_receiving(m->udev_monitor); |
| if (r < 0) { |
| log_error("Could not enable udev monitor"); |
| return r; |
| } |
| |
| r = sd_event_add_io(m->event, |
| &m->udev_event_source, |
| udev_monitor_get_fd(m->udev_monitor), |
| EPOLLIN, manager_dispatch_link_udev, |
| m); |
| if (r < 0) |
| return r; |
| |
| r = sd_event_source_set_description(m->udev_event_source, "networkd-udev"); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| int manager_rtnl_process_route(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
| Manager *m = userdata; |
| Link *link = NULL; |
| uint16_t type; |
| uint32_t ifindex, priority = 0; |
| unsigned char protocol, scope, tos, table, rt_type; |
| int family; |
| unsigned char dst_prefixlen, src_prefixlen; |
| union in_addr_union dst = {}, gw = {}, src = {}, prefsrc = {}; |
| Route *route = NULL; |
| int r; |
| |
| assert(rtnl); |
| assert(message); |
| assert(m); |
| |
| if (sd_netlink_message_is_error(message)) { |
| r = sd_netlink_message_get_errno(message); |
| if (r < 0) |
| log_warning_errno(r, "rtnl: failed to receive route, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| r = sd_netlink_message_get_type(message, &type); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); |
| return 0; |
| } else if (!IN_SET(type, RTM_NEWROUTE, RTM_DELROUTE)) { |
| log_warning("rtnl: received unexpected message type when processing route, ignoring"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_u32(message, RTA_OIF, &ifindex); |
| if (r == -ENODATA) { |
| log_debug("rtnl: received route without ifindex, ignoring"); |
| return 0; |
| } else if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get ifindex from route, ignoring: %m"); |
| return 0; |
| } else if (ifindex <= 0) { |
| log_warning("rtnl: received route message with invalid ifindex, ignoring: %d", ifindex); |
| return 0; |
| } else { |
| r = link_get(m, ifindex, &link); |
| if (r < 0 || !link) { |
| /* when enumerating we might be out of sync, but we will |
| * get the route again, so just ignore it */ |
| if (!m->enumerating) |
| log_warning("rtnl: received route for nonexistent link (%d), ignoring", ifindex); |
| return 0; |
| } |
| } |
| |
| r = sd_rtnl_message_route_get_family(message, &family); |
| if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) { |
| log_link_warning(link, "rtnl: received address with invalid family, ignoring"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_protocol(message, &protocol); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get route protocol: %m"); |
| return 0; |
| } |
| |
| switch (family) { |
| case AF_INET: |
| r = sd_netlink_message_read_in_addr(message, RTA_DST, &dst.in); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in_addr(message, RTA_GATEWAY, &gw.in); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in_addr(message, RTA_SRC, &src.in); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in_addr(message, RTA_PREFSRC, &prefsrc.in); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m"); |
| return 0; |
| } |
| |
| break; |
| |
| case AF_INET6: |
| r = sd_netlink_message_read_in6_addr(message, RTA_DST, &dst.in6); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route without valid destination, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in6_addr(message, RTA_GATEWAY, &gw.in6); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid gateway, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in6_addr(message, RTA_SRC, &src.in6); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid source, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in6_addr(message, RTA_PREFSRC, &prefsrc.in6); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid preferred source, ignoring: %m"); |
| return 0; |
| } |
| |
| break; |
| |
| default: |
| assert_not_reached("Received unsupported address family"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_dst_prefixlen(message, &dst_prefixlen); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid destination prefixlen, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_src_prefixlen(message, &src_prefixlen); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid source prefixlen, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_scope(message, &scope); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid scope, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_tos(message, &tos); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid tos, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_type(message, &rt_type); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid type, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_route_get_table(message, &table); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid table, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_u32(message, RTA_PRIORITY, &priority); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: received route with invalid priority, ignoring: %m"); |
| return 0; |
| } |
| |
| (void) route_get(link, family, &dst, dst_prefixlen, tos, priority, table, &route); |
| |
| switch (type) { |
| case RTM_NEWROUTE: |
| if (!route) { |
| /* A route appeared that we did not request */ |
| r = route_add_foreign(link, family, &dst, dst_prefixlen, tos, priority, table, &route); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "Failed to add route, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| route_update(route, &src, src_prefixlen, &gw, &prefsrc, scope, protocol, rt_type); |
| |
| break; |
| |
| case RTM_DELROUTE: |
| route_free(route); |
| break; |
| |
| default: |
| assert_not_reached("Received invalid RTNL message type"); |
| } |
| |
| return 1; |
| } |
| |
| int manager_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
| Manager *m = userdata; |
| Link *link = NULL; |
| uint16_t type; |
| unsigned char flags; |
| int family; |
| unsigned char prefixlen; |
| unsigned char scope; |
| union in_addr_union in_addr; |
| struct ifa_cacheinfo cinfo; |
| Address *address = NULL; |
| char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX]; |
| const char *valid_str = NULL; |
| int r, ifindex; |
| |
| assert(rtnl); |
| assert(message); |
| assert(m); |
| |
| if (sd_netlink_message_is_error(message)) { |
| r = sd_netlink_message_get_errno(message); |
| if (r < 0) |
| log_warning_errno(r, "rtnl: failed to receive address, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| r = sd_netlink_message_get_type(message, &type); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); |
| return 0; |
| } else if (!IN_SET(type, RTM_NEWADDR, RTM_DELADDR)) { |
| log_warning("rtnl: received unexpected message type when processing address, ignoring"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get ifindex from address, ignoring: %m"); |
| return 0; |
| } else if (ifindex <= 0) { |
| log_warning("rtnl: received address message with invalid ifindex, ignoring: %d", ifindex); |
| return 0; |
| } else { |
| r = link_get(m, ifindex, &link); |
| if (r < 0 || !link) { |
| /* when enumerating we might be out of sync, but we will |
| * get the address again, so just ignore it */ |
| if (!m->enumerating) |
| log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex); |
| return 0; |
| } |
| } |
| |
| r = sd_rtnl_message_addr_get_family(message, &family); |
| if (r < 0 || !IN_SET(family, AF_INET, AF_INET6)) { |
| log_link_warning(link, "rtnl: received address with invalid family, ignoring"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_addr_get_prefixlen(message, &prefixlen); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_addr_get_scope(message, &scope); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_addr_get_flags(message, &flags); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m"); |
| return 0; |
| } |
| |
| switch (family) { |
| case AF_INET: |
| r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &in_addr.in); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); |
| return 0; |
| } |
| |
| break; |
| |
| case AF_INET6: |
| r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &in_addr.in6); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); |
| return 0; |
| } |
| |
| break; |
| |
| default: |
| assert_not_reached("Received unsupported address family"); |
| } |
| |
| if (!inet_ntop(family, &in_addr, buf, INET6_ADDRSTRLEN)) { |
| log_link_warning(link, "Could not print address, ignoring"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &cinfo); |
| if (r < 0 && r != -ENODATA) { |
| log_link_warning_errno(link, r, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m"); |
| return 0; |
| } else if (r >= 0) { |
| if (cinfo.ifa_valid != CACHE_INFO_INFINITY_LIFE_TIME) |
| valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX, |
| cinfo.ifa_valid * USEC_PER_SEC, |
| USEC_PER_SEC); |
| } |
| |
| (void) address_get(link, family, &in_addr, prefixlen, &address); |
| |
| switch (type) { |
| case RTM_NEWADDR: |
| if (address) |
| log_link_debug(link, "Updating address: %s/%u (valid %s%s)", buf, prefixlen, |
| valid_str ? "for " : "forever", strempty(valid_str)); |
| else { |
| /* An address appeared that we did not request */ |
| r = address_add_foreign(link, family, &in_addr, prefixlen, &address); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "Failed to add address %s/%u, ignoring: %m", buf, prefixlen); |
| return 0; |
| } else |
| log_link_debug(link, "Adding address: %s/%u (valid %s%s)", buf, prefixlen, |
| valid_str ? "for " : "forever", strempty(valid_str)); |
| } |
| |
| r = address_update(address, flags, scope, &cinfo); |
| if (r < 0) { |
| log_link_warning_errno(link, r, "Failed to update address %s/%u, ignoring: %m", buf, prefixlen); |
| return 0; |
| } |
| |
| break; |
| |
| case RTM_DELADDR: |
| |
| if (address) { |
| log_link_debug(link, "Removing address: %s/%u (valid %s%s)", buf, prefixlen, |
| valid_str ? "for " : "forever", strempty(valid_str)); |
| (void) address_drop(address); |
| } else |
| log_link_warning(link, "Removing non-existent address: %s/%u (valid %s%s), ignoring", buf, prefixlen, |
| valid_str ? "for " : "forever", strempty(valid_str)); |
| |
| break; |
| default: |
| assert_not_reached("Received invalid RTNL message type"); |
| } |
| |
| return 1; |
| } |
| |
| static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
| Manager *m = userdata; |
| Link *link = NULL; |
| NetDev *netdev = NULL; |
| uint16_t type; |
| const char *name; |
| int r, ifindex; |
| |
| assert(rtnl); |
| assert(message); |
| assert(m); |
| |
| if (sd_netlink_message_is_error(message)) { |
| r = sd_netlink_message_get_errno(message); |
| if (r < 0) |
| log_warning_errno(r, "rtnl: Could not receive link, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| r = sd_netlink_message_get_type(message, &type); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); |
| return 0; |
| } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { |
| log_warning("rtnl: Received unexpected message type when processing link, ignoring"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: Could not get ifindex from link, ignoring: %m"); |
| return 0; |
| } else if (ifindex <= 0) { |
| log_warning("rtnl: received link message with invalid ifindex %d, ignoring", ifindex); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); |
| return 0; |
| } |
| |
| (void) link_get(m, ifindex, &link); |
| (void) netdev_get(m, name, &netdev); |
| |
| switch (type) { |
| case RTM_NEWLINK: |
| if (!link) { |
| /* link is new, so add it */ |
| r = link_add(m, message, &link); |
| if (r < 0) { |
| log_warning_errno(r, "Could not add new link, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| if (netdev) { |
| /* netdev exists, so make sure the ifindex matches */ |
| r = netdev_set_ifindex(netdev, message); |
| if (r < 0) { |
| log_warning_errno(r, "Could not set ifindex on netdev, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| r = link_update(link, message); |
| if (r < 0) { |
| log_warning_errno(r, "Could not update link, ignoring: %m"); |
| return 0; |
| } |
| |
| break; |
| |
| case RTM_DELLINK: |
| link_drop(link); |
| netdev_drop(netdev); |
| |
| break; |
| |
| default: |
| assert_not_reached("Received invalid RTNL message type."); |
| } |
| |
| return 1; |
| } |
| |
| int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
| uint8_t tos = 0, to_prefixlen = 0, from_prefixlen = 0; |
| union in_addr_union to = {}, from = {}; |
| RoutingPolicyRule *rule = NULL; |
| uint32_t fwmark = 0, table = 0; |
| char *iif = NULL, *oif = NULL; |
| Manager *m = userdata; |
| uint16_t type; |
| int family; |
| int r; |
| |
| assert(rtnl); |
| assert(message); |
| assert(m); |
| |
| if (sd_netlink_message_is_error(message)) { |
| r = sd_netlink_message_get_errno(message); |
| if (r < 0) |
| log_warning_errno(r, "rtnl: failed to receive rule, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| r = sd_netlink_message_get_type(message, &type); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get message type, ignoring: %m"); |
| return 0; |
| } else if (!IN_SET(type, RTM_NEWRULE, RTM_DELRULE)) { |
| log_warning("rtnl: received unexpected message type '%u' when processing rule, ignoring", type); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_get_family(message, &family); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: could not get rule family, ignoring: %m"); |
| return 0; |
| } else if (!IN_SET(family, AF_INET, AF_INET6)) { |
| log_debug("rtnl: received address with invalid family %u, ignoring", family); |
| return 0; |
| } |
| |
| switch (family) { |
| case AF_INET: |
| r = sd_netlink_message_read_in_addr(message, FRA_SRC, &from.in); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m"); |
| return 0; |
| } else if (r >= 0) { |
| r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: failed to retrive rule from prefix length, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| r = sd_netlink_message_read_in_addr(message, FRA_DST, &to.in); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m"); |
| return 0; |
| } else if (r >= 0) { |
| r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: failed to retrive rule to prefix length, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| break; |
| |
| case AF_INET6: |
| r = sd_netlink_message_read_in6_addr(message, FRA_SRC, &from.in6); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_SRC attribute, ignoring: %m"); |
| return 0; |
| } else if (r >= 0) { |
| r = sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message, &from_prefixlen); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: failed to retrive rule from prefix length, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| r = sd_netlink_message_read_in6_addr(message, FRA_DST, &to.in6); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_DST attribute, ignoring: %m"); |
| return 0; |
| } else if (r >= 0) { |
| r = sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message, &to_prefixlen); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: failed to retrive rule to prefix length, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| break; |
| |
| default: |
| assert_not_reached("Received unsupported address family"); |
| } |
| |
| if (from_prefixlen == 0 && to_prefixlen == 0) |
| return 0; |
| |
| r = sd_netlink_message_read_u32(message, FRA_FWMARK, &fwmark); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_u32(message, FRA_TABLE, &table); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_TABLE attribute, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_routing_policy_rule_get_tos(message, &tos); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get ip rule TOS, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_string(message, FRA_IIFNAME, (const char **) &iif); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_string(message, FRA_OIFNAME, (const char **) &oif); |
| if (r < 0 && r != -ENODATA) { |
| log_warning_errno(r, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m"); |
| return 0; |
| } |
| |
| (void) routing_policy_rule_get(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule); |
| |
| switch (type) { |
| case RTM_NEWRULE: |
| if (!rule) { |
| r = routing_policy_rule_add_foreign(m, family, &from, from_prefixlen, &to, to_prefixlen, tos, fwmark, table, iif, oif, &rule); |
| if (r < 0) { |
| log_warning_errno(r, "Could not add rule, ignoring: %m"); |
| return 0; |
| } |
| } |
| break; |
| case RTM_DELRULE: |
| routing_policy_rule_free(rule); |
| |
| break; |
| |
| default: |
| assert_not_reached("Received invalid RTNL message type"); |
| } |
| |
| return 1; |
| } |
| |
| static int systemd_netlink_fd(void) { |
| int n, fd, rtnl_fd = -EINVAL; |
| |
| n = sd_listen_fds(true); |
| if (n <= 0) |
| return -EINVAL; |
| |
| for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { |
| if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
| if (rtnl_fd >= 0) |
| return -EINVAL; |
| |
| rtnl_fd = fd; |
| } |
| } |
| |
| return rtnl_fd; |
| } |
| |
| static int manager_connect_genl(Manager *m) { |
| int r; |
| |
| assert(m); |
| |
| r = sd_genl_socket_open(&m->genl); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_inc_rcvbuf(m->genl, RCVBUF_SIZE); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_attach_event(m->genl, m->event, 0); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int manager_connect_rtnl(Manager *m) { |
| int fd, r; |
| |
| assert(m); |
| |
| fd = systemd_netlink_fd(); |
| if (fd < 0) |
| r = sd_netlink_open(&m->rtnl); |
| else |
| r = sd_netlink_open_fd(&m->rtnl, fd); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_attach_event(m->rtnl, m->event, 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, &manager_rtnl_process_address, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, &manager_rtnl_process_address, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_NEWROUTE, &manager_rtnl_process_route, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_DELROUTE, &manager_rtnl_process_route, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_NEWRULE, &manager_rtnl_process_rule, m); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_add_match(m->rtnl, RTM_DELRULE, &manager_rtnl_process_rule, m); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int ordered_set_put_in_addr_data(OrderedSet *s, const struct in_addr_data *address) { |
| char *p; |
| int r; |
| |
| assert(s); |
| assert(address); |
| |
| r = in_addr_to_string(address->family, &address->address, &p); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_consume(s, p); |
| if (r == -EEXIST) |
| return 0; |
| |
| return r; |
| } |
| |
| static int ordered_set_put_in_addr_datav(OrderedSet *s, const struct in_addr_data *addresses, unsigned n) { |
| int r, c = 0; |
| unsigned i; |
| |
| assert(s); |
| assert(addresses || n == 0); |
| |
| for (i = 0; i < n; i++) { |
| r = ordered_set_put_in_addr_data(s, addresses+i); |
| if (r < 0) |
| return r; |
| |
| c += r; |
| } |
| |
| return c; |
| } |
| |
| static int ordered_set_put_in4_addr(OrderedSet *s, const struct in_addr *address) { |
| char *p; |
| int r; |
| |
| assert(s); |
| assert(address); |
| |
| r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_consume(s, p); |
| if (r == -EEXIST) |
| return 0; |
| |
| return r; |
| } |
| |
| static int ordered_set_put_in4_addrv(OrderedSet *s, const struct in_addr *addresses, unsigned n) { |
| int r, c = 0; |
| unsigned i; |
| |
| assert(s); |
| assert(n == 0 || addresses); |
| |
| for (i = 0; i < n; i++) { |
| r = ordered_set_put_in4_addr(s, addresses+i); |
| if (r < 0) |
| return r; |
| |
| c += r; |
| } |
| |
| return c; |
| } |
| |
| static void print_string_set(FILE *f, const char *field, OrderedSet *s) { |
| bool space = false; |
| Iterator i; |
| char *p; |
| |
| if (ordered_set_isempty(s)) |
| return; |
| |
| fputs(field, f); |
| |
| ORDERED_SET_FOREACH(p, s, i) |
| fputs_with_space(f, p, NULL, &space); |
| |
| fputc('\n', f); |
| } |
| |
| static int manager_save(Manager *m) { |
| _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *search_domains = NULL, *route_domains = NULL; |
| Link *link; |
| Iterator i; |
| _cleanup_free_ char *temp_path = NULL; |
| _cleanup_fclose_ FILE *f = NULL; |
| LinkOperationalState operstate = LINK_OPERSTATE_OFF; |
| const char *operstate_str; |
| int r; |
| |
| assert(m); |
| assert(m->state_file); |
| |
| /* We add all NTP and DNS server to a set, to filter out duplicates */ |
| dns = ordered_set_new(&string_hash_ops); |
| if (!dns) |
| return -ENOMEM; |
| |
| ntp = ordered_set_new(&string_hash_ops); |
| if (!ntp) |
| return -ENOMEM; |
| |
| search_domains = ordered_set_new(&dns_name_hash_ops); |
| if (!search_domains) |
| return -ENOMEM; |
| |
| route_domains = ordered_set_new(&dns_name_hash_ops); |
| if (!route_domains) |
| return -ENOMEM; |
| |
| HASHMAP_FOREACH(link, m->links, i) { |
| if (link->flags & IFF_LOOPBACK) |
| continue; |
| |
| if (link->operstate > operstate) |
| operstate = link->operstate; |
| |
| if (!link->network) |
| continue; |
| |
| /* First add the static configured entries */ |
| r = ordered_set_put_in_addr_datav(dns, link->network->dns, link->network->n_dns); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_put_strdupv(ntp, link->network->ntp); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_put_strdupv(search_domains, link->network->search_domains); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_put_strdupv(route_domains, link->network->route_domains); |
| if (r < 0) |
| return r; |
| |
| if (!link->dhcp_lease) |
| continue; |
| |
| /* Secondly, add the entries acquired via DHCP */ |
| if (link->network->dhcp_use_dns) { |
| const struct in_addr *addresses; |
| |
| r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); |
| if (r > 0) { |
| r = ordered_set_put_in4_addrv(dns, addresses, r); |
| if (r < 0) |
| return r; |
| } else if (r < 0 && r != -ENODATA) |
| return r; |
| } |
| |
| if (link->network->dhcp_use_ntp) { |
| const struct in_addr *addresses; |
| |
| r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); |
| if (r > 0) { |
| r = ordered_set_put_in4_addrv(ntp, addresses, r); |
| if (r < 0) |
| return r; |
| } else if (r < 0 && r != -ENODATA) |
| return r; |
| } |
| |
| if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
| const char *domainname; |
| char **domains = NULL; |
| |
| OrderedSet *target_domains = (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) ? search_domains : route_domains; |
| r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); |
| if (r >= 0) { |
| r = ordered_set_put_strdup(target_domains, domainname); |
| if (r < 0) |
| return r; |
| } else if (r != -ENODATA) |
| return r; |
| |
| r = sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains); |
| if (r >= 0) { |
| r = ordered_set_put_strdupv(target_domains, domains); |
| if (r < 0) |
| return r; |
| } else if (r != -ENODATA) |
| return r; |
| } |
| } |
| |
| operstate_str = link_operstate_to_string(operstate); |
| assert(operstate_str); |
| |
| r = fopen_temporary(m->state_file, &f, &temp_path); |
| if (r < 0) |
| return r; |
| |
| (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
| (void) fchmod(fileno(f), 0644); |
| |
| fprintf(f, |
| "# This is private data. Do not parse.\n" |
| "OPER_STATE=%s\n", operstate_str); |
| |
| print_string_set(f, "DNS=", dns); |
| print_string_set(f, "NTP=", ntp); |
| print_string_set(f, "DOMAINS=", search_domains); |
| print_string_set(f, "ROUTE_DOMAINS=", route_domains); |
| |
| r = routing_policy_serialize_rules(m->rules, f); |
| if (r < 0) |
| goto fail; |
| |
| r = fflush_and_check(f); |
| if (r < 0) |
| goto fail; |
| |
| if (rename(temp_path, m->state_file) < 0) { |
| r = -errno; |
| goto fail; |
| } |
| |
| if (m->operational_state != operstate) { |
| m->operational_state = operstate; |
| r = manager_send_changed(m, "OperationalState", NULL); |
| if (r < 0) |
| log_error_errno(r, "Could not emit changed OperationalState: %m"); |
| } |
| |
| m->dirty = false; |
| |
| return 0; |
| |
| fail: |
| (void) unlink(m->state_file); |
| (void) unlink(temp_path); |
| |
| return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file); |
| } |
| |
| static int manager_dirty_handler(sd_event_source *s, void *userdata) { |
| Manager *m = userdata; |
| Link *link; |
| Iterator i; |
| int r; |
| |
| assert(m); |
| |
| if (m->dirty) |
| manager_save(m); |
| |
| SET_FOREACH(link, m->dirty_links, i) { |
| r = link_save(link); |
| if (r >= 0) |
| link_clean(link); |
| } |
| |
| return 1; |
| } |
| |
| Link *manager_dhcp6_prefix_get(Manager *m, struct in6_addr *addr) { |
| assert_return(m, NULL); |
| assert_return(m->dhcp6_prefixes, NULL); |
| assert_return(addr, NULL); |
| |
| return hashmap_get(m->dhcp6_prefixes, addr); |
| } |
| |
| static int dhcp6_route_add_callback(sd_netlink *nl, sd_netlink_message *m, |
| void *userdata) { |
| Link *l = userdata; |
| int r; |
| union in_addr_union prefix; |
| _cleanup_free_ char *buf = NULL; |
| |
| r = sd_netlink_message_get_errno(m); |
| if (r != 0) { |
| log_link_debug_errno(l, r, "Received error adding DHCPv6 Prefix Delegation route: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in6_addr(m, RTA_DST, &prefix.in6); |
| if (r < 0) { |
| log_link_debug_errno(l, r, "Could not read IPv6 address from DHCPv6 Prefix Delegation while adding route: %m"); |
| return 0; |
| } |
| |
| (void) in_addr_to_string(AF_INET6, &prefix, &buf); |
| log_link_debug(l, "Added DHCPv6 Prefix Deleagtion route %s/64", |
| strnull(buf)); |
| |
| return 0; |
| } |
| |
| int manager_dhcp6_prefix_add(Manager *m, struct in6_addr *addr, Link *link) { |
| int r; |
| Route *route; |
| |
| assert_return(m, -EINVAL); |
| assert_return(m->dhcp6_prefixes, -ENODATA); |
| assert_return(addr, -EINVAL); |
| |
| r = route_add(link, AF_INET6, (union in_addr_union *) addr, 64, |
| 0, 0, 0, &route); |
| if (r < 0) |
| return r; |
| |
| r = route_configure(route, link, dhcp6_route_add_callback); |
| if (r < 0) |
| return r; |
| |
| return hashmap_put(m->dhcp6_prefixes, addr, link); |
| } |
| |
| static int dhcp6_route_remove_callback(sd_netlink *nl, sd_netlink_message *m, |
| void *userdata) { |
| Link *l = userdata; |
| int r; |
| union in_addr_union prefix; |
| _cleanup_free_ char *buf = NULL; |
| |
| r = sd_netlink_message_get_errno(m); |
| if (r != 0) { |
| log_link_debug_errno(l, r, "Received error on DHCPv6 Prefix Delegation route removal: %m"); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_in6_addr(m, RTA_DST, &prefix.in6); |
| if (r < 0) { |
| log_link_debug_errno(l, r, "Could not read IPv6 address from DHCPv6 Prefix Delegation while removing route: %m"); |
| return 0; |
| } |
| |
| (void) in_addr_to_string(AF_INET6, &prefix, &buf); |
| log_link_debug(l, "Removed DHCPv6 Prefix Delegation route %s/64", |
| strnull(buf)); |
| |
| return 0; |
| } |
| |
| int manager_dhcp6_prefix_remove(Manager *m, struct in6_addr *addr) { |
| Link *l; |
| int r; |
| Route *route; |
| |
| assert_return(m, -EINVAL); |
| assert_return(m->dhcp6_prefixes, -ENODATA); |
| assert_return(addr, -EINVAL); |
| |
| l = hashmap_remove(m->dhcp6_prefixes, addr); |
| if (!l) |
| return -EINVAL; |
| |
| (void) sd_radv_remove_prefix(l->radv, addr, 64); |
| r = route_get(l, AF_INET6, (union in_addr_union *) addr, 64, |
| 0, 0, 0, &route); |
| if (r >= 0) |
| (void) route_remove(route, l, dhcp6_route_remove_callback); |
| |
| return 0; |
| } |
| |
| int manager_dhcp6_prefix_remove_all(Manager *m, Link *link) { |
| Iterator i; |
| Link *l; |
| struct in6_addr *addr; |
| |
| assert_return(m, -EINVAL); |
| assert_return(link, -EINVAL); |
| |
| HASHMAP_FOREACH_KEY(l, addr, m->dhcp6_prefixes, i) { |
| if (l != link) |
| continue; |
| |
| (void) manager_dhcp6_prefix_remove(m, addr); |
| } |
| |
| return 0; |
| } |
| |
| static void dhcp6_prefixes_hash_func(const void *p, struct siphash *state) { |
| const struct in6_addr *addr = p; |
| |
| assert(p); |
| |
| siphash24_compress(addr, sizeof(*addr), state); |
| } |
| |
| static int dhcp6_prefixes_compare_func(const void *_a, const void *_b) { |
| const struct in6_addr *a = _a, *b = _b; |
| |
| return memcmp(&a, &b, sizeof(*a)); |
| } |
| |
| static const struct hash_ops dhcp6_prefixes_hash_ops = { |
| .hash = dhcp6_prefixes_hash_func, |
| .compare = dhcp6_prefixes_compare_func, |
| }; |
| |
| int manager_new(Manager **ret, sd_event *event) { |
| _cleanup_manager_free_ Manager *m = NULL; |
| int r; |
| |
| m = new0(Manager, 1); |
| if (!m) |
| return -ENOMEM; |
| |
| m->state_file = strdup("/run/systemd/netif/state"); |
| if (!m->state_file) |
| return -ENOMEM; |
| |
| m->event = sd_event_ref(event); |
| |
| r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m); |
| if (r < 0) |
| return r; |
| |
| r = manager_connect_rtnl(m); |
| if (r < 0) |
| return r; |
| |
| r = manager_connect_genl(m); |
| if (r < 0) |
| return r; |
| |
| r = manager_connect_udev(m); |
| if (r < 0) |
| return r; |
| |
| m->netdevs = hashmap_new(&string_hash_ops); |
| if (!m->netdevs) |
| return -ENOMEM; |
| |
| LIST_HEAD_INIT(m->networks); |
| |
| r = sd_resolve_default(&m->resolve); |
| if (r < 0) |
| return r; |
| |
| r = sd_resolve_attach_event(m->resolve, m->event, 0); |
| if (r < 0) |
| return r; |
| |
| r = setup_default_address_pool(m); |
| if (r < 0) |
| return r; |
| |
| m->dhcp6_prefixes = hashmap_new(&dhcp6_prefixes_hash_ops); |
| if (!m->dhcp6_prefixes) |
| return -ENOMEM; |
| |
| m->duid.type = DUID_TYPE_EN; |
| |
| (void) routing_policy_load_rules(m->state_file, &m->rules_saved); |
| |
| *ret = m; |
| m = NULL; |
| |
| return 0; |
| } |
| |
| void manager_free(Manager *m) { |
| Network *network; |
| NetDev *netdev; |
| Link *link; |
| AddressPool *pool; |
| |
| if (!m) |
| return; |
| |
| free(m->state_file); |
| |
| while ((network = m->networks)) |
| network_free(network); |
| |
| while ((link = hashmap_first(m->dhcp6_prefixes))) |
| link_unref(link); |
| hashmap_free(m->dhcp6_prefixes); |
| |
| while ((link = hashmap_first(m->links))) |
| link_unref(link); |
| hashmap_free(m->links); |
| |
| hashmap_free(m->networks_by_name); |
| |
| while ((netdev = hashmap_first(m->netdevs))) |
| netdev_unref(netdev); |
| hashmap_free(m->netdevs); |
| |
| while ((pool = m->address_pools)) |
| address_pool_free(pool); |
| |
| set_free(m->rules); |
| set_free(m->rules_foreign); |
| |
| set_free_with_destructor(m->rules_saved, routing_policy_rule_free); |
| |
| sd_netlink_unref(m->rtnl); |
| sd_event_unref(m->event); |
| |
| sd_resolve_unref(m->resolve); |
| |
| sd_event_source_unref(m->udev_event_source); |
| udev_monitor_unref(m->udev_monitor); |
| udev_unref(m->udev); |
| |
| sd_bus_unref(m->bus); |
| sd_bus_slot_unref(m->prepare_for_sleep_slot); |
| sd_bus_slot_unref(m->connected_slot); |
| sd_event_source_unref(m->bus_retry_event_source); |
| |
| free(m->dynamic_timezone); |
| free(m->dynamic_hostname); |
| |
| free(m); |
| } |
| |
| int manager_start(Manager *m) { |
| Link *link; |
| Iterator i; |
| |
| assert(m); |
| |
| /* The dirty handler will deal with future serialization, but the first one |
| must be done explicitly. */ |
| |
| manager_save(m); |
| |
| HASHMAP_FOREACH(link, m->links, i) |
| link_save(link); |
| |
| return 0; |
| } |
| |
| int manager_load_config(Manager *m) { |
| int r; |
| |
| /* update timestamp */ |
| paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true); |
| |
| r = netdev_load(m); |
| if (r < 0) |
| return r; |
| |
| r = network_load(m); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| bool manager_should_reload(Manager *m) { |
| return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false); |
| } |
| |
| int manager_rtnl_enumerate_links(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
| sd_netlink_message *link; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_message_request_dump(req, true); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_call(m->rtnl, req, 0, &reply); |
| if (r < 0) |
| return r; |
| |
| for (link = reply; link; link = sd_netlink_message_next(link)) { |
| int k; |
| |
| m->enumerating = true; |
| |
| k = manager_rtnl_process_link(m->rtnl, link, m); |
| if (k < 0) |
| r = k; |
| |
| m->enumerating = false; |
| } |
| |
| return r; |
| } |
| |
| int manager_rtnl_enumerate_addresses(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
| sd_netlink_message *addr; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_message_request_dump(req, true); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_call(m->rtnl, req, 0, &reply); |
| if (r < 0) |
| return r; |
| |
| for (addr = reply; addr; addr = sd_netlink_message_next(addr)) { |
| int k; |
| |
| m->enumerating = true; |
| |
| k = manager_rtnl_process_address(m->rtnl, addr, m); |
| if (k < 0) |
| r = k; |
| |
| m->enumerating = false; |
| } |
| |
| return r; |
| } |
| |
| int manager_rtnl_enumerate_routes(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
| sd_netlink_message *route; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_message_request_dump(req, true); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_call(m->rtnl, req, 0, &reply); |
| if (r < 0) |
| return r; |
| |
| for (route = reply; route; route = sd_netlink_message_next(route)) { |
| int k; |
| |
| m->enumerating = true; |
| |
| k = manager_rtnl_process_route(m->rtnl, route, m); |
| if (k < 0) |
| r = k; |
| |
| m->enumerating = false; |
| } |
| |
| return r; |
| } |
| |
| int manager_rtnl_enumerate_rules(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; |
| sd_netlink_message *rule; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_routing_policy_rule(m->rtnl, &req, RTM_GETRULE, 0); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_message_request_dump(req, true); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_call(m->rtnl, req, 0, &reply); |
| if (r < 0) { |
| if (r == -EOPNOTSUPP) { |
| log_debug("FIB Rules are not supported by the kernel. Ignoring."); |
| return 0; |
| } |
| |
| return r; |
| } |
| |
| for (rule = reply; rule; rule = sd_netlink_message_next(rule)) { |
| int k; |
| |
| m->enumerating = true; |
| |
| k = manager_rtnl_process_rule(m->rtnl, rule, m); |
| if (k < 0) |
| r = k; |
| |
| m->enumerating = false; |
| } |
| |
| return r; |
| } |
| |
| int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) { |
| AddressPool *p; |
| int r; |
| |
| assert(m); |
| assert(prefixlen > 0); |
| assert(found); |
| |
| LIST_FOREACH(address_pools, p, m->address_pools) { |
| if (p->family != family) |
| continue; |
| |
| r = address_pool_acquire(p, prefixlen, found); |
| if (r != 0) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| Link* manager_find_uplink(Manager *m, Link *exclude) { |
| _cleanup_free_ struct local_address *gateways = NULL; |
| int n, i; |
| |
| assert(m); |
| |
| /* Looks for a suitable "uplink", via black magic: an |
| * interface that is up and where the default route with the |
| * highest priority points to. */ |
| |
| n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways); |
| if (n < 0) { |
| log_warning_errno(n, "Failed to determine list of default gateways: %m"); |
| return NULL; |
| } |
| |
| for (i = 0; i < n; i++) { |
| Link *link; |
| |
| link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex)); |
| if (!link) { |
| log_debug("Weird, found a gateway for a link we don't know. Ignoring."); |
| continue; |
| } |
| |
| if (link == exclude) |
| continue; |
| |
| if (link->operstate < LINK_OPERSTATE_ROUTABLE) |
| continue; |
| |
| return link; |
| } |
| |
| return NULL; |
| } |
| |
| void manager_dirty(Manager *manager) { |
| assert(manager); |
| |
| /* the serialized state in /run is no longer up-to-date */ |
| manager->dirty = true; |
| } |
| |
| static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| Manager *manager = userdata; |
| const sd_bus_error *e; |
| |
| assert(m); |
| assert(manager); |
| |
| e = sd_bus_message_get_error(m); |
| if (e) |
| log_warning_errno(sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); |
| |
| return 1; |
| } |
| |
| int manager_set_hostname(Manager *m, const char *hostname) { |
| int r; |
| |
| log_debug("Setting transient hostname: '%s'", strna(hostname)); |
| |
| if (free_and_strdup(&m->dynamic_hostname, hostname) < 0) |
| return log_oom(); |
| |
| if (!m->bus || sd_bus_is_ready(m->bus) <= 0) { |
| log_info("Not connected to system bus, not setting hostname."); |
| return 0; |
| } |
| |
| r = sd_bus_call_method_async( |
| m->bus, |
| NULL, |
| "org.freedesktop.hostname1", |
| "/org/freedesktop/hostname1", |
| "org.freedesktop.hostname1", |
| "SetHostname", |
| set_hostname_handler, |
| m, |
| "sb", |
| hostname, |
| false); |
| |
| if (r < 0) |
| return log_error_errno(r, "Could not set transient hostname: %m"); |
| |
| return 0; |
| } |
| |
| static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| Manager *manager = userdata; |
| const sd_bus_error *e; |
| |
| assert(m); |
| assert(manager); |
| |
| e = sd_bus_message_get_error(m); |
| if (e) |
| log_warning_errno(sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); |
| |
| return 1; |
| } |
| |
| int manager_set_timezone(Manager *m, const char *tz) { |
| int r; |
| |
| assert(m); |
| assert(tz); |
| |
| log_debug("Setting system timezone: '%s'", tz); |
| if (free_and_strdup(&m->dynamic_timezone, tz) < 0) |
| return log_oom(); |
| |
| if (!m->bus || sd_bus_is_ready(m->bus) <= 0) { |
| log_info("Not connected to system bus, not setting hostname."); |
| return 0; |
| } |
| |
| r = sd_bus_call_method_async( |
| m->bus, |
| NULL, |
| "org.freedesktop.timedate1", |
| "/org/freedesktop/timedate1", |
| "org.freedesktop.timedate1", |
| "SetTimezone", |
| set_timezone_handler, |
| m, |
| "sb", |
| tz, |
| false); |
| if (r < 0) |
| return log_error_errno(r, "Could not set timezone: %m"); |
| |
| return 0; |
| } |