091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <netinet/in.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <poll.h>

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering#include <resolv.h>

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen#include <sys/ioctl.h>

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering

b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering#include "af-list.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "dns-domain.h"

3ffd4af22052963e7a29431721ee204e634bea75Lennart Poettering#include "fd-util.h"

a5a807e63a50314e190e9166d8a453cd8dd258e3Zbigniew Jędrzejewski-Szmek#include "fileio-label.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "hostname-util.h"

c004493cdefc1f43a3956ca529e8070f8d70be56Lennart Poettering#include "netlink-util.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "network-internal.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "ordered-set.h"

822db23cfa98a9fbc48f41e11caafb6f1017e052Lennart Poettering#include "random-util.h"

6bedfcbb2970e06a4d3280c8fb62083d252ede73Lennart Poettering#include "resolved-bus.h"

3df3e884ae1237ef0d4d23b0e80f4ffda95ac135Ronny Chevalier#include "resolved-conf.h"

39d8db043b599a7382f94bfc904d5e108af438bdLennart Poettering#include "resolved-llmnr.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "resolved-manager.h"

dd0bc0f1414cc1d0fa73a29470bd14944e4942d3Lennart Poettering#include "socket-util.h"

5f402ae84bbc08fe8de5682e371b3f66c387da52Daniel Mack#include "string-util.h"

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "utf8.h"

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack

dd0bc0f1414cc1d0fa73a29470bd14944e4942d3Lennart Poettering#define SEND_TIMEOUT_USEC (200 * USEC_PER_MSEC)

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering

8b43440b7ef4b81c69c31de7ff820dc07a780254Lennart Poetteringstatic int manager_process_link(sd_netlink *rtnl, sd_netlink_message *mm, void *userdata) {

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering Manager *m = userdata;

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering uint16_t type;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Link *l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int ifindex, r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen assert(rtnl);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(mm);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_get_type(mm, &type);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_rtnl_message_link_get_ifindex(mm, &ifindex);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering l = hashmap_get(m->links, INT_TO_PTR(ifindex));

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering switch (type) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering case RTM_NEWLINK:{

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering bool is_new = !l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!l) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = link_new(m, &l, ifindex);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering goto fail;

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering r = link_update_rtnl(l, mm);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = link_update_monitor(l);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (is_new)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_debug("Found new link %i/%s", ifindex, l->name);

21d73c87b09ec2b8642424bc714ce9af3da4fc40Lennart Poettering

21d73c87b09ec2b8642424bc714ce9af3da4fc40Lennart Poettering break;

21d73c87b09ec2b8642424bc714ce9af3da4fc40Lennart Poettering }

21d73c87b09ec2b8642424bc714ce9af3da4fc40Lennart Poettering

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering case RTM_DELLINK:

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering if (l) {

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering log_debug("Removing link %i/%s", l->ifindex, l->name);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering link_free(l);

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering break;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringfail:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning_errno(r, "Failed to process RTNL link message: %m");

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int manager_process_address(sd_netlink *rtnl, sd_netlink_message *mm, void *userdata) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Manager *m = userdata;

da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt union in_addr_union address;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering uint16_t type;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int r, ifindex, family;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering LinkAddress *a;

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen Link *l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(rtnl);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(mm);

0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_get_type(mm, &type);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_rtnl_message_addr_get_ifindex(mm, &ifindex);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering l = hashmap_get(m->links, INT_TO_PTR(ifindex));

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!l)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_rtnl_message_addr_get_family(mm, &family);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering switch (family) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering case AF_INET:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_read_in_addr(mm, IFA_LOCAL, &address.in);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_read_in_addr(mm, IFA_ADDRESS, &address.in);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering break;

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering case AF_INET6:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_read_in6_addr(mm, IFA_LOCAL, &address.in6);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_read_in6_addr(mm, IFA_ADDRESS, &address.in6);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering break;

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering default:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering a = link_find_address(l, family, &address);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering switch (type) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering case RTM_NEWADDR:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!a) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = link_address_new(l, &a, family, &address);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = link_address_update_rtnl(a, mm);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering break;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering case RTM_DELADDR:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering link_address_free(a);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering break;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

3e044c492e3ebe64f4e3175c94f9db8a62557b82Markus Elfringfail:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning_errno(r, "Failed to process RTNL address message: %m");

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int manager_rtnl_listen(Manager *m) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;

da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt sd_netlink_message *i;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering /* First, subscribe to interfaces coming and going */

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen r = sd_netlink_open(&m->rtnl);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_attach_event(m->rtnl, m->event, 0);

cc98b3025eeb89addb76a27390cb2baca4eab8b9Torstein Husebø if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_add_match(m->rtnl, RTM_NEWLINK, manager_process_link, m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

2d8950384f3137aafcce22b29912b2b61e6d86fbLennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_add_match(m->rtnl, RTM_DELLINK, manager_process_link, m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_add_match(m->rtnl, RTM_NEWADDR, manager_process_address, m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_add_match(m->rtnl, RTM_DELADDR, manager_process_address, m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Then, enumerate all links */

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0);

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_request_dump(req, true);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_call(m->rtnl, req, 0, &reply);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering for (i = reply; i; i = sd_netlink_message_next(i)) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = manager_process_link(m->rtnl, i, m);

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen req = sd_netlink_message_unref(req);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering reply = sd_netlink_message_unref(reply);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Finally, enumerate all addresses, too */

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_message_request_dump(req, true);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_netlink_call(m->rtnl, req, 0, &reply);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering for (i = reply; i; i = sd_netlink_message_next(i)) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = manager_process_address(m->rtnl, i, m);

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int on_network_event(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Manager *m = userdata;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Iterator i;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Link *l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering sd_network_monitor_flush(m->network_monitor);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering HASHMAP_FOREACH(l, m->links, i) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = link_update_monitor(l);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning_errno(r, "Failed to update monitor information for %i: %m", l->ifindex);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = manager_write_resolv_conf(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning_errno(r, "Could not update resolv.conf: %m");

da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int manager_network_monitor_listen(Manager *m) {

da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt int r, fd, events;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_network_monitor_new(&m->network_monitor, NULL);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering fd = sd_network_monitor_get_fd(m->network_monitor);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (fd < 0)

0014a4ad505d119c7ac4346d9d774c3f17f663a5Lennart Poettering return fd;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering events = sd_network_monitor_get_events(m->network_monitor);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (events < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return events;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = sd_event_add_io(m->event, &m->network_event_source, fd, events, &on_network_event, m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int determine_hostname(char **llmnr_hostname, char **mdns_hostname) {

2d8950384f3137aafcce22b29912b2b61e6d86fbLennart Poettering _cleanup_free_ char *h = NULL, *n = NULL;

2d8950384f3137aafcce22b29912b2b61e6d86fbLennart Poettering char label[DNS_LABEL_MAX];

2d8950384f3137aafcce22b29912b2b61e6d86fbLennart Poettering const char *p;

2d8950384f3137aafcce22b29912b2b61e6d86fbLennart Poettering int r, k;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(llmnr_hostname);

aa4a9deb7d3db95ffb1fd18791be66f58d06a69eLennart Poettering assert(mdns_hostname);

aa4a9deb7d3db95ffb1fd18791be66f58d06a69eLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Extract and normalize the first label of the locally

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering h = gethostname_malloc();

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (!h)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return log_oom();

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering p = h;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering r = dns_label_unescape(&p, label, sizeof(label));

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (r < 0)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return log_error_errno(r, "Failed to unescape host name: %m");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (r == 0) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering log_error("Couldn't find a single label in hosntame.");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return -EINVAL;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering }

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering k = dns_label_undo_idna(label, r, label, sizeof(label));

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (k < 0)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return log_error_errno(k, "Failed to undo IDNA: %m");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (k > 0)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering r = k;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (!utf8_is_valid(label)) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering log_error("System hostname is not UTF-8 clean.");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return -EINVAL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering }

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering r = dns_label_escape(label, r, &n);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (r < 0)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return log_error_errno(r, "Failed to escape host name: %m");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (is_localhost(n)) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering log_debug("System hostname is 'localhost', ignoring.");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return -EINVAL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering }

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering r = dns_name_concat(n, "local", mdns_hostname);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (r < 0)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return log_error_errno(r, "Failed to determine mDNS hostname: %m");

422baca0f230913158078fddf884e06c8c64a316Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering *llmnr_hostname = n;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering n = NULL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return 0;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering}

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poetteringstatic int on_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) {

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering _cleanup_free_ char *llmnr_hostname = NULL, *mdns_hostname = NULL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering Manager *m = userdata;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering int r;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering assert(m);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering r = determine_hostname(&llmnr_hostname, &mdns_hostname);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (r < 0)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return 0; /* ignore invalid hostnames */

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (streq(llmnr_hostname, m->llmnr_hostname) && streq(mdns_hostname, m->mdns_hostname))

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return 0;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering log_info("System hostname changed to '%s'.", llmnr_hostname);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering free(m->llmnr_hostname);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering free(m->mdns_hostname);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering m->llmnr_hostname = llmnr_hostname;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering m->mdns_hostname = mdns_hostname;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering llmnr_hostname = mdns_hostname = NULL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering manager_refresh_rrs(m);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return 0;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering}

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poetteringstatic int manager_watch_hostname(Manager *m) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering int r;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering assert(m);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering m->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (m->hostname_fd < 0) {

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering log_warning_errno(errno, "Failed to watch hostname: %m");

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return 0;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering }

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering r = sd_event_add_io(m->event, &m->hostname_event_source, m->hostname_fd, 0, on_hostname_change, m);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (r < 0) {

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (r == -EPERM)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering /* kernels prior to 3.2 don't support polling this file. Ignore the failure. */

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering m->hostname_fd = safe_close(m->hostname_fd);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering else

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return log_error_errno(r, "Failed to add hostname event source: %m");

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering }

56f64d95763a799ba4475daf44d8e9f72a1bd474Michal Schmidt

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering r = determine_hostname(&m->llmnr_hostname, &m->mdns_hostname);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (r < 0) {

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering log_info("Defaulting to hostname 'linux'.");

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering m->llmnr_hostname = strdup("linux");

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (!m->llmnr_hostname)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return log_oom();

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering m->mdns_hostname = strdup("linux.local");

8d3d7072e609ef0e0fb37e1d19a29307d58146c3Michal Schmidt if (!m->mdns_hostname)

8d3d7072e609ef0e0fb37e1d19a29307d58146c3Michal Schmidt return log_oom();

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering } else

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering log_info("Using system hostname '%s'.", m->llmnr_hostname);

aa4a9deb7d3db95ffb1fd18791be66f58d06a69eLennart Poettering

aa4a9deb7d3db95ffb1fd18791be66f58d06a69eLennart Poettering return 0;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering}

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poetteringstatic int manager_sigusr1(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering _cleanup_free_ char *buffer = NULL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering _cleanup_fclose_ FILE *f = NULL;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering Manager *m = userdata;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering size_t size = 0;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering DnsScope *scope;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering assert(s);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering assert(si);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering assert(m);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering f = open_memstream(&buffer, &size);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (!f)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return log_oom();

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering LIST_FOREACH(scopes, scope, m->dns_scopes)

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering dns_scope_dump(scope, f);

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering if (fflush_and_check(f) < 0)

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering return log_oom();

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering log_dump(LOG_INFO, buffer);

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering return 0;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering}

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poetteringint manager_new(Manager **ret) {

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering _cleanup_(manager_freep) Manager *m = NULL;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering int r;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering assert(ret);

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering m = new0(Manager, 1);

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering if (!m)

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering return -ENOMEM;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering m->llmnr_ipv4_udp_fd = m->llmnr_ipv6_udp_fd = -1;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering m->llmnr_ipv4_tcp_fd = m->llmnr_ipv6_tcp_fd = -1;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering m->hostname_fd = -1;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen m->llmnr_support = SUPPORT_YES;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering m->read_resolv_conf = true;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen r = manager_parse_dns_server(m, DNS_SERVER_FALLBACK, DNS_SERVERS);

c92e531c82a9815ec349aa1bf31236b86b2d5311Lennart Poettering if (r < 0)

c92e531c82a9815ec349aa1bf31236b86b2d5311Lennart Poettering return r;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen r = sd_event_default(&m->event);

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if (r < 0)

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen return r;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering sd_event_set_watchdog(m->event, true);

af49ca27ffd790d78dbbb465b978266dfd5c93daLennart Poettering

ad6c04756115809d615dede330213d73edf732a8Lennart Poettering r = manager_watch_hostname(m);

ad6c04756115809d615dede330213d73edf732a8Lennart Poettering if (r < 0)

5cb36f41f01cf4b1f4395abfffd1b33116591e58Lennart Poettering return r;

00fa60ae3b2823036cb3e7734f16bce30cb7441dLennart Poettering

dd0bc0f1414cc1d0fa73a29470bd14944e4942d3Lennart Poettering r = dns_scope_new(m, &m->unicast_scope, NULL, DNS_PROTOCOL_DNS, AF_UNSPEC);

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if (r < 0)

0d2cd47617b423f37d7425be7a56ae2fca8ff9f6Lennart Poettering return r;

0d2cd47617b423f37d7425be7a56ae2fca8ff9f6Lennart Poettering

0d2cd47617b423f37d7425be7a56ae2fca8ff9f6Lennart Poettering r = manager_network_monitor_listen(m);

0d2cd47617b423f37d7425be7a56ae2fca8ff9f6Lennart Poettering if (r < 0)

ad6c04756115809d615dede330213d73edf732a8Lennart Poettering return r;

ad6c04756115809d615dede330213d73edf732a8Lennart Poettering

ad6c04756115809d615dede330213d73edf732a8Lennart Poettering r = manager_rtnl_listen(m);

ad6c04756115809d615dede330213d73edf732a8Lennart Poettering if (r < 0)

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen return r;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen r = manager_connect_bus(m);

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if (r < 0)

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen return r;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen (void) sd_event_add_signal(m->event, &m->sigusr1_event_source, SIGUSR1, manager_sigusr1, m);

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen *ret = m;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering m = NULL;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return 0;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering}

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringint manager_start(Manager *m) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = manager_llmnr_start(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringManager *manager_free(Manager *m) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Link *l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering if (!m)

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering return NULL;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen while ((l = hashmap_first(m->links)))

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen link_free(l);

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen while (m->dns_queries)

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen dns_query_free(m->dns_queries);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering manager_flush_dns_servers(m, DNS_SERVER_SYSTEM);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering manager_flush_dns_servers(m, DNS_SERVER_FALLBACK);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering dns_scope_free(m->unicast_scope);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering hashmap_free(m->links);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering hashmap_free(m->dns_transactions);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack sd_event_source_unref(m->network_event_source);

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack sd_network_monitor_unref(m->network_monitor);

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack manager_llmnr_stop(m);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering sd_bus_slot_unref(m->prepare_for_sleep_slot);

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering sd_event_source_unref(m->bus_retry_event_source);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering sd_bus_unref(m->bus);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen sd_event_source_unref(m->sigusr1_event_source);

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering sd_event_unref(m->event);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

4b95f1798f22c1bb75295f448188560cb6ec9eceLennart Poettering dns_resource_key_unref(m->llmnr_host_ipv4_key);

4b95f1798f22c1bb75295f448188560cb6ec9eceLennart Poettering dns_resource_key_unref(m->llmnr_host_ipv6_key);

a51c10485af349eb15faa4d1a63b9818bcf3e589Lennart Poettering

a51c10485af349eb15faa4d1a63b9818bcf3e589Lennart Poettering sd_event_source_unref(m->hostname_event_source);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering safe_close(m->hostname_fd);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering free(m->llmnr_hostname);

f0e1546763304aedc90e91d70dab9eeb7c966cf8Lennart Poettering free(m->mdns_hostname);

f0e1546763304aedc90e91d70dab9eeb7c966cf8Lennart Poettering

f0e1546763304aedc90e91d70dab9eeb7c966cf8Lennart Poettering free(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

cab5b05903096e1c9cf5575ccc73f89d15c8db69Lennart Poettering return NULL;

cab5b05903096e1c9cf5575ccc73f89d15c8db69Lennart Poettering}

f0e1546763304aedc90e91d70dab9eeb7c966cf8Lennart Poettering

f0e1546763304aedc90e91d70dab9eeb7c966cf8Lennart Poetteringint manager_read_resolv_conf(Manager *m) {

f0e1546763304aedc90e91d70dab9eeb7c966cf8Lennart Poettering _cleanup_fclose_ FILE *f = NULL;

096b6773886bd7a0c8c97aa684b0b67dfae58355Lennart Poettering struct stat st, own;

096b6773886bd7a0c8c97aa684b0b67dfae58355Lennart Poettering char line[LINE_MAX];

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen DnsServer *s, *nx;

a564ca2fd113b2876e677beab60b38d50591e246Lennart Poettering usec_t t;

a564ca2fd113b2876e677beab60b38d50591e246Lennart Poettering int r;

a564ca2fd113b2876e677beab60b38d50591e246Lennart Poettering

edc501d4674dadc304d45a7e1c5b69e207eb8cd4Lennart Poettering assert(m);

bc7702b098b63031767174206f5df14a8ccb45cfDaniel Mack

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering /* Reads the system /etc/resolv.conf, if it exists and is not

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!m->read_resolv_conf)

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen return 0;

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering

4d506d6bb757af3b99e0876234c465e6898c5ea4Lennart Poettering r = stat("/etc/resolv.conf", &st);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0) {

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (errno != ENOENT)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering log_warning_errno(errno, "Failed to open /etc/resolv.conf: %m");

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering r = -errno;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering goto clear;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering }

d9fcf2ba1abe81ed3a7a151d6db09139b4dc7a09Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering /* Have we already seen the file? */

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering t = timespec_load(&st.st_mtim);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (t == m->resolv_conf_mtime)

0d2cd47617b423f37d7425be7a56ae2fca8ff9f6Lennart Poettering return 0;

dd0bc0f1414cc1d0fa73a29470bd14944e4942d3Lennart Poettering

0d2cd47617b423f37d7425be7a56ae2fca8ff9f6Lennart Poettering m->resolv_conf_mtime = t;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* Is it symlinked to our own file? */

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (stat("/run/systemd/resolve/resolv.conf", &own) >= 0 &&

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen st.st_dev == own.st_dev &&

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen st.st_ino == own.st_ino) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto clear;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering }

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

40a1eebde6be7ac3f1885147fc24e06ad1da260cDavid Herrmann f = fopen("/etc/resolv.conf", "re");

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (!f) {

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (errno != ENOENT)

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_warning_errno(errno, "Failed to open /etc/resolv.conf: %m");

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = -errno;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto clear;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (fstat(fileno(f), &st) < 0) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = log_error_errno(errno, "Failed to stat open file: %m");

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto clear;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering LIST_FOREACH(servers, s, m->dns_servers)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering s->marked = true;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering FOREACH_LINE(line, f, r = -errno; goto clear) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering union in_addr_union address;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int family;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering char *l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering const char *a;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering truncate_nl(line);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering l = strstrip(line);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (*l == '#' || *l == ';')

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering continue;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering a = first_word(l, "nameserver");

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (!a)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering continue;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = in_addr_from_string_auto(a, &family, &address);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (r < 0) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering log_warning("Failed to parse name server %s.", a);

a38d99451f2bf8026ec51aee91662292e823c6a8Lennart Poettering continue;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

ad867662936a4c7ab2c7116d804c272338801231Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering LIST_FOREACH(servers, s, m->dns_servers)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (s->family == family && in_addr_equal(family, &s->address, &address) > 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering break;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen if (s)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering s->marked = false;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering else {

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen r = dns_server_new(m, NULL, DNS_SERVER_SYSTEM, NULL, family, &address);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (r < 0)

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering goto clear;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering LIST_FOREACH_SAFE(servers, s, nx, m->dns_servers)

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (s->marked) {

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering LIST_REMOVE(servers, m->dns_servers, s);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering dns_server_unref(s);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering }

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* Whenever /etc/resolv.conf changes, start using the first

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering manager_set_dns_server(m, m->dns_servers);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return 0;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringclear:

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering while (m->dns_servers) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering s = m->dns_servers;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering LIST_REMOVE(servers, m->dns_servers, s);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering dns_server_unref(s);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering }

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering return r;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic void write_resolv_conf_server(DnsServer *s, FILE *f, unsigned *count) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering _cleanup_free_ char *t = NULL;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering int r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering assert(s);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering assert(f);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering assert(count);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = in_addr_to_string(s->family, &s->address, &t);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering log_warning_errno(r, "Invalid DNS address. Ignoring: %m");

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering return;

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen }

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (*count == MAXNS)

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering fputs("# Too many DNS servers configured, the following entries may be ignored.\n", f);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering fprintf(f, "nameserver %s\n", t);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering (*count) ++;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic void write_resolv_conf_search(

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering const char *domain, FILE *f,

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering unsigned *count,

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering unsigned *length) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(domain);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering assert(f);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering assert(length);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (*count >= MAXDNSRCH ||

a5f035960006556beab51c42e6948985635e261aLennart Poettering *length + strlen(domain) > 256) {

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (*count == MAXDNSRCH)

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering fputs(" # Too many search domains configured, remaining ones ignored.", f);

86ad4cd709ced8daf2b75ab564dece1ce82ffed9Tom Gundersen if (*length <= 256)

86ad4cd709ced8daf2b75ab564dece1ce82ffed9Tom Gundersen fputs(" # Total length of all search domains is too long, remaining ones ignored.", f);

86ad4cd709ced8daf2b75ab564dece1ce82ffed9Tom Gundersen

86ad4cd709ced8daf2b75ab564dece1ce82ffed9Tom Gundersen return;

86ad4cd709ced8daf2b75ab564dece1ce82ffed9Tom Gundersen }

86ad4cd709ced8daf2b75ab564dece1ce82ffed9Tom Gundersen

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering fprintf(f, " %s", domain);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering (*length) += strlen(domain);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering (*count) ++;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringstatic int write_resolv_conf_contents(FILE *f, OrderedSet *dns, OrderedSet *domains) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering Iterator i;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering fputs("# This file is managed by systemd-resolved(8). Do not edit.\n#\n"

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "# Third party programs must not access this file directly, but\n"

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "# only through the symlink at /etc/resolv.conf. To manage\n"

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "# resolv.conf(5) in a different way, replace the symlink by a\n"

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering "# static file or a different symlink.\n\n", f);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (ordered_set_isempty(dns))

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering fputs("# No DNS servers known.\n", f);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering else {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering DnsServer *s;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering unsigned count = 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering ORDERED_SET_FOREACH(s, dns, i)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering write_resolv_conf_server(s, f, &count);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!ordered_set_isempty(domains)) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering unsigned length = 0, count = 0;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering char *domain;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering fputs("search", f);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering ORDERED_SET_FOREACH(domain, domains, i)

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen write_resolv_conf_search(domain, f, &count, &length);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen fputs("\n", f);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen }

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen return fflush_and_check(f);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen}

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersenint manager_write_resolv_conf(Manager *m) {

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen static const char path[] = "/run/systemd/resolve/resolv.conf";

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen _cleanup_free_ char *temp_path = NULL;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen _cleanup_fclose_ FILE *f = NULL;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen _cleanup_ordered_set_free_ OrderedSet *dns = NULL, *domains = NULL;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen DnsServer *s;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen Iterator i;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen Link *l;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen int r;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen assert(m);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen /* Read the system /etc/resolv.conf first */

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen manager_read_resolv_conf(m);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen /* Add the full list to a set, to filter out duplicates */

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen dns = ordered_set_new(&dns_server_hash_ops);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen if (!dns)

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen return -ENOMEM;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

deb3f3d335d64601bb2d8a7520d8303f99d8a071Lennart Poettering domains = ordered_set_new(&dns_name_hash_ops);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen if (!domains)

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen return -ENOMEM;

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen /* First add the system-wide servers */

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen LIST_FOREACH(servers, s, m->dns_servers) {

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen r = ordered_set_put(dns, s);

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen if (r == -EEXIST)

72290734be81e83e6ef9520c07692f68095eb5b2Tom Gundersen continue;

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering /* Then, add the per-link servers and domains */

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering HASHMAP_FOREACH(l, m->links, i) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering char **domain;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering LIST_FOREACH(servers, s, l->dns_servers) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = ordered_set_put(dns, s);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r == -EEXIST)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering continue;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (r < 0)

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering return r;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (!l->unicast_scope)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering continue;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen STRV_FOREACH(domain, l->unicast_scope->domains) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering r = ordered_set_put(domains, *domain);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (r == -EEXIST)

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen continue;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

091a364c802e34a58f3260c9cb5db9b75c62215cTom Gundersen

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering /* If we found nothing, add the fallback servers */

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (ordered_set_isempty(dns)) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering LIST_FOREACH(servers, s, m->fallback_dns_servers) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = ordered_set_put(dns, s);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r == -EEXIST)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering continue;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = fopen_temporary_label(path, path, &f, &temp_path);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering fchmod(fileno(f), 0644);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = write_resolv_conf_contents(f, dns, domains);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (rename(temp_path, path) < 0) {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = -errno;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering goto fail;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering }

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering return 0;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringfail:

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering (void) unlink(path);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering (void) unlink(temp_path);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringint manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering union {

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering struct cmsghdr header; /* For alignment */

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering uint8_t buffer[CMSG_SPACE(MAXSIZE(struct in_pktinfo, struct in6_pktinfo))

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering + CMSG_SPACE(int) /* ttl/hoplimit */

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering + EXTRA_CMSG_SPACE /* kernel appears to require extra buffer space */];

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering } control;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering union sockaddr_union sa;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering struct msghdr mh = {};

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering struct cmsghdr *cmsg;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering struct iovec iov;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering int ms = 0, r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering ssize_t l;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(m);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(fd >= 0);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering assert(ret);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = ioctl(fd, FIONREAD, &ms);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return -errno;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (ms < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return -EIO;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering r = dns_packet_new(&p, protocol, ms);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering if (r < 0)

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering return r;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering iov.iov_base = DNS_PACKET_DATA(p);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering iov.iov_len = p->allocated;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering mh.msg_name = &sa.sa;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering mh.msg_namelen = sizeof(sa);

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering mh.msg_iov = &iov;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering mh.msg_iovlen = 1;

74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering mh.msg_control = &control;

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering mh.msg_controllen = sizeof(control);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering l = recvmsg(fd, &mh, 0);

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (l < 0) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (errno == EAGAIN || errno == EINTR)

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering return 0;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

deb3f3d335d64601bb2d8a7520d8303f99d8a071Lennart Poettering return -errno;

a2a416f768e2aa7db5b975cd50eb19237cac9cceLennart Poettering }

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering if (l <= 0)

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering return -EIO;

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering assert(!(mh.msg_flags & MSG_CTRUNC));

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering assert(!(mh.msg_flags & MSG_TRUNC));

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering p->size = (size_t) l;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->family = sa.sa.sa_family;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->ipproto = IPPROTO_UDP;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering if (p->family == AF_INET) {

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->sender.in = sa.in.sin_addr;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->sender_port = be16toh(sa.in.sin_port);

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering } else if (p->family == AF_INET6) {

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->sender.in6 = sa.in6.sin6_addr;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->sender_port = be16toh(sa.in6.sin6_port);

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering p->ifindex = sa.in6.sin6_scope_id;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering } else

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering return -EAFNOSUPPORT;

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering CMSG_FOREACH(cmsg, &mh) {

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering if (cmsg->cmsg_level == IPPROTO_IPV6) {

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering assert(p->family == AF_INET6);

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering

e1c959948c0e31d6997bcdfbabfbd077784b2baeLennart Poettering switch (cmsg->cmsg_type) {

1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering case IPV6_PKTINFO: {

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering struct in6_pktinfo *i = (struct in6_pktinfo*) CMSG_DATA(cmsg);

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (p->ifindex <= 0)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering p->ifindex = i->ipi6_ifindex;

4e945a6f7971fd7d1f6b2c62ee3afdaff3c95ce4Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering p->destination.in6 = i->ipi6_addr;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering break;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering }

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering case IPV6_HOPLIMIT:

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering p->ttl = *(int *) CMSG_DATA(cmsg);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering break;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering }

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering } else if (cmsg->cmsg_level == IPPROTO_IP) {

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering assert(p->family == AF_INET);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering switch (cmsg->cmsg_type) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering case IP_PKTINFO: {

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering struct in_pktinfo *i = (struct in_pktinfo*) CMSG_DATA(cmsg);

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering if (p->ifindex <= 0)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering p->ifindex = i->ipi_ifindex;

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering p->destination.in = i->ipi_addr;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering break;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering }

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering case IP_TTL:

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering p->ttl = *(int *) CMSG_DATA(cmsg);

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering break;

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering }

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering }

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering }

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering /* The Linux kernel sets the interface index to the loopback

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (p->ifindex == LOOPBACK_IFINDEX)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering p->ifindex = 0;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (protocol != DNS_PROTOCOL_DNS) {

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering /* If we don't know the interface index still, we look for the

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (p->ifindex <= 0)

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering p->ifindex = manager_find_ifindex(m, p->family, &p->destination);

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering }

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering *ret = p;

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering p = NULL;

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering return 1;

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering}

556a22945fcc88ca27ae7ecc46c9bb2727e37895Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poetteringstatic int sendmsg_loop(int fd, struct msghdr *mh, int flags) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering int r;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering assert(fd >= 0);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering assert(mh);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering for (;;) {

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (sendmsg(fd, mh, flags) >= 0)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return 0;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (errno == EINTR)

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering continue;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering if (errno != EAGAIN)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering return -errno;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering r = fd_wait_for_event(fd, POLLOUT, SEND_TIMEOUT_USEC);

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (r < 0)

eb60f9cd4e93ff5016dc1b5486fd1b7e1565fd92Lennart Poettering return r;

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering if (r == 0)

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering return -ETIMEDOUT;

623a4c97b9175f95c4b1c6fc34e36c56f1e4ddbfLennart Poettering }

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering}

4e945a6f7971fd7d1f6b2c62ee3afdaff3c95ce4Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poetteringstatic int write_loop(int fd, void *message, size_t length) {

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering int r;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering assert(fd >= 0);

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering assert(message);

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering for (;;) {

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (write(fd, message, length) >= 0)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering return 0;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (errno == EINTR)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering continue;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (errno != EAGAIN)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering return -errno;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering r = fd_wait_for_event(fd, POLLOUT, SEND_TIMEOUT_USEC);

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (r < 0)

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering return r;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering if (r == 0)

4e945a6f7971fd7d1f6b2c62ee3afdaff3c95ce4Lennart Poettering return -ETIMEDOUT;

ec2c5e4398f9d65e5dfe61530f2556224733d1e6Lennart Poettering }

4e945a6f7971fd7d1f6b2c62ee3afdaff3c95ce4Lennart Poettering}

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poetteringint manager_write(Manager *m, int fd, DnsPacket *p) {

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering int r;

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering log_debug("Sending %s packet with id %u", DNS_PACKET_QR(p) ? "response" : "query", DNS_PACKET_ID(p));

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering r = write_loop(fd, DNS_PACKET_DATA(p), p->size);

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering if (r < 0)

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering return r;

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack return 0;

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack}

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poetteringstatic int manager_ipv4_send(Manager *m, int fd, int ifindex, const struct in_addr *addr, uint16_t port, DnsPacket *p) {

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering union sockaddr_union sa = {

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering .in.sin_family = AF_INET,

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack };

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack union {

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack struct cmsghdr header; /* For alignment */

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack uint8_t buffer[CMSG_SPACE(sizeof(struct in_pktinfo))];

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack } control;

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack struct msghdr mh = {};

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack struct iovec iov;

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack assert(m);

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack assert(fd >= 0);

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack assert(addr);

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack assert(port > 0);

b4f1862df2e45aba90386887d685b8bf3c840e10Daniel Mack assert(p);

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering iov.iov_base = DNS_PACKET_DATA(p);

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering iov.iov_len = p->size;

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering

a407657425a3e47fd2b559cd3bc800f791303f63Lennart Poettering sa.in.sin_addr = *addr;

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering sa.in.sin_port = htobe16(port),

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering mh.msg_iov = &iov;

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering mh.msg_iovlen = 1;

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering mh.msg_name = &sa.sa;

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering mh.msg_namelen = sizeof(sa.in);

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering if (ifindex > 0) {

902bb5d8abb2a7d258741828d212ca549ab16950Lennart Poettering struct cmsghdr *cmsg;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering struct in_pktinfo *pi;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering zero(control);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering mh.msg_control = &control;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering mh.msg_controllen = CMSG_LEN(sizeof(struct in_pktinfo));

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering cmsg = CMSG_FIRSTHDR(&mh);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering cmsg->cmsg_len = mh.msg_controllen;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering cmsg->cmsg_level = IPPROTO_IP;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering cmsg->cmsg_type = IP_PKTINFO;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering pi = (struct in_pktinfo*) CMSG_DATA(cmsg);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering pi->ipi_ifindex = ifindex;

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering }

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering return sendmsg_loop(fd, &mh, 0);

78c6a153c47f8d597c827bdcaf8c4e42ac87f738Lennart Poettering}

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poetteringstatic int manager_ipv6_send(Manager *m, int fd, int ifindex, const struct in6_addr *addr, uint16_t port, DnsPacket *p) {

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering union sockaddr_union sa = {

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering .in6.sin6_family = AF_INET6,

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering };

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering union {

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering struct cmsghdr header; /* For alignment */

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering uint8_t buffer[CMSG_SPACE(sizeof(struct in6_pktinfo))];

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering } control;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering struct msghdr mh = {};

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering struct iovec iov;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(m);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(fd >= 0);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(addr);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(port > 0);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(p);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering iov.iov_base = DNS_PACKET_DATA(p);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering iov.iov_len = p->size;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering sa.in6.sin6_addr = *addr;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering sa.in6.sin6_port = htobe16(port),

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering sa.in6.sin6_scope_id = ifindex;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering mh.msg_iov = &iov;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering mh.msg_iovlen = 1;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering mh.msg_name = &sa.sa;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering mh.msg_namelen = sizeof(sa.in6);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering if (ifindex > 0) {

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering struct cmsghdr *cmsg;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering struct in6_pktinfo *pi;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering zero(control);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering mh.msg_control = &control;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering mh.msg_controllen = CMSG_LEN(sizeof(struct in6_pktinfo));

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering cmsg = CMSG_FIRSTHDR(&mh);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering cmsg->cmsg_len = mh.msg_controllen;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering cmsg->cmsg_level = IPPROTO_IPV6;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering cmsg->cmsg_type = IPV6_PKTINFO;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering pi = (struct in6_pktinfo*) CMSG_DATA(cmsg);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering pi->ipi6_ifindex = ifindex;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering }

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering return sendmsg_loop(fd, &mh, 0);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering}

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poetteringint manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *addr, uint16_t port, DnsPacket *p) {

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(m);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(fd >= 0);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(addr);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(port > 0);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(p);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering log_debug("Sending %s packet with id %u on interface %i/%s", DNS_PACKET_QR(p) ? "response" : "query", DNS_PACKET_ID(p), ifindex, af_to_name(family));

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering if (family == AF_INET)

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering return manager_ipv4_send(m, fd, ifindex, &addr->in, port, p);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering else if (family == AF_INET6)

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering return manager_ipv6_send(m, fd, ifindex, &addr->in6, port, p);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering return -EAFNOSUPPORT;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering}

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart PoetteringDnsServer* manager_find_dns_server(Manager *m, int family, const union in_addr_union *in_addr) {

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering DnsServer *s;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(m);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering assert(in_addr);

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering LIST_FOREACH(servers, s, m->dns_servers)

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering if (s->family == family && in_addr_equal(family, &s->address, in_addr) > 0)

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering return s;

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering LIST_FOREACH(servers, s, m->fallback_dns_servers)

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering if (s->family == family && in_addr_equal(family, &s->address, in_addr) > 0)

9176a57c101d51b4a7fb4141240b5ce03abac57dLennart Poettering return s;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering return NULL;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering}

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart PoetteringDnsServer *manager_set_dns_server(Manager *m, DnsServer *s) {

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering assert(m);

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering if (m->current_dns_server == s)

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering return s;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering if (s) {

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering _cleanup_free_ char *ip = NULL;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering in_addr_to_string(s->family, &s->address, &ip);

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering log_info("Switching to system DNS server %s.", strna(ip));

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering }

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering m->current_dns_server = s;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering if (m->unicast_scope)

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering dns_cache_flush(&m->unicast_scope->cache);

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering return s;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering}

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart PoetteringDnsServer *manager_get_dns_server(Manager *m) {

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering Link *l;

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering assert(m);

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering

c69fa7e3c44240bedc0ee1bd89fecf954783ac85Lennart Poettering /* Try to read updates resolv.conf */

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering manager_read_resolv_conf(m);

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering if (!m->current_dns_server)

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering manager_set_dns_server(m, m->dns_servers);

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering if (!m->current_dns_server) {

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering bool found = false;

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering Iterator i;

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering /* No DNS servers configured, let's see if there are

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering HASHMAP_FOREACH(l, m->links, i)

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering if (l->dns_servers) {

59c5b5974d106c5ebad080739b41d0e92ab74d29Lennart Poettering found = true;

break;

}

if (!found)

manager_set_dns_server(m, m->fallback_dns_servers);

}

return m->current_dns_server;

}

void manager_next_dns_server(Manager *m) {

assert(m);

/* If there's currently no DNS server set, then the next

if (!m->current_dns_server)

return;

/* Change to the next one */

if (m->current_dns_server->servers_next) {

manager_set_dns_server(m, m->current_dns_server->servers_next);

return;

}

/* If there was no next one, then start from the beginning of

if (m->current_dns_server->type == DNS_SERVER_FALLBACK)

manager_set_dns_server(m, m->fallback_dns_servers);

else

manager_set_dns_server(m, m->dns_servers);

}

uint32_t manager_find_mtu(Manager *m) {

uint32_t mtu = 0;

Link *l;

Iterator i;

/* If we don't know on which link a DNS packet would be

HASHMAP_FOREACH(l, m->links, i) {

if (l->mtu <= 0)

continue;

if (mtu <= 0 || l->mtu < mtu)

mtu = l->mtu;

}

return mtu;

}

int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr) {

LinkAddress *a;

assert(m);

a = manager_find_link_address(m, family, in_addr);

if (a)

return a->link->ifindex;

return 0;

}

void manager_refresh_rrs(Manager *m) {

Iterator i;

Link *l;

assert(m);

m->llmnr_host_ipv4_key = dns_resource_key_unref(m->llmnr_host_ipv4_key);

m->llmnr_host_ipv6_key = dns_resource_key_unref(m->llmnr_host_ipv6_key);

HASHMAP_FOREACH(l, m->links, i) {

link_add_rrs(l, true);

link_add_rrs(l, false);

}

}

int manager_next_hostname(Manager *m) {

const char *p;

uint64_t u, a;

char *h, *k;

int r;

assert(m);

p = strchr(m->llmnr_hostname, 0);

assert(p);

while (p > m->llmnr_hostname) {

if (!strchr("0123456789", p[-1]))

break;

p--;

}

if (*p == 0 || safe_atou64(p, &u) < 0 || u <= 0)

u = 1;

/* Add a random number to the old value. This way we can avoid

random_bytes(&a, sizeof(a));

u += 1 + a % 10;

if (asprintf(&h, "%.*s%" PRIu64, (int) (p - m->llmnr_hostname), m->llmnr_hostname, u) < 0)

return -ENOMEM;

r = dns_name_concat(h, "local", &k);

if (r < 0) {

free(h);

return r;

}

log_info("Hostname conflict, changing published hostname from '%s' to '%s'.", m->llmnr_hostname, h);

free(m->llmnr_hostname);

m->llmnr_hostname = h;

free(m->mdns_hostname);

m->mdns_hostname = k;

manager_refresh_rrs(m);

return 0;

}

LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr) {

Iterator i;

Link *l;

assert(m);

HASHMAP_FOREACH(l, m->links, i) {

LinkAddress *a;

a = link_find_address(l, family, in_addr);

if (a)

return a;

}

return NULL;

}

bool manager_our_packet(Manager *m, DnsPacket *p) {

assert(m);

assert(p);

return !!manager_find_link_address(m, p->family, &p->sender);

}

DnsScope* manager_find_scope(Manager *m, DnsPacket *p) {

Link *l;

assert(m);

assert(p);

l = hashmap_get(m->links, INT_TO_PTR(p->ifindex));

if (!l)

return NULL;

if (p->protocol == DNS_PROTOCOL_LLMNR) {

if (p->family == AF_INET)

return l->llmnr_ipv4_scope;

else if (p->family == AF_INET6)

return l->llmnr_ipv6_scope;

}

return NULL;

}

void manager_verify_all(Manager *m) {

DnsScope *s;

assert(m);

LIST_FOREACH(scopes, s, m->dns_scopes)

dns_zone_verify_all(&s->zone);

}

void manager_flush_dns_servers(Manager *m, DnsServerType t) {

DnsServer *s;

assert(m);

if (t == DNS_SERVER_SYSTEM)

while (m->dns_servers) {

s = m->dns_servers;