/* SPDX-License-Identifier: LGPL-2.1-or-later */ #include #include #include #include "sd-bus.h" #include "sd-netlink.h" #include "af-list.h" #include "alloc-util.h" #include "build.h" #include "bus-common-errors.h" #include "bus-error.h" #include "bus-locator.h" #include "bus-map-properties.h" #include "bus-message-util.h" #include "dns-domain.h" #include "errno-list.h" #include "escape.h" #include "format-table.h" #include "format-util.h" #include "gcrypt-util.h" #include "hostname-util.h" #include "json.h" #include "main-func.h" #include "missing_network.h" #include "netlink-util.h" #include "openssl-util.h" #include "pager.h" #include "parse-argument.h" #include "parse-util.h" #include "pretty-print.h" #include "process-util.h" #include "resolvconf-compat.h" #include "resolve-util.h" #include "resolvectl.h" #include "resolved-def.h" #include "resolved-dns-packet.h" #include "resolved-util.h" #include "socket-netlink.h" #include "sort-util.h" #include "stdio-util.h" #include "string-table.h" #include "strv.h" #include "terminal-util.h" #include "utf8.h" #include "varlink.h" #include "verb-log-control.h" #include "verbs.h" static int arg_family = AF_UNSPEC; static int arg_ifindex = 0; static char *arg_ifname = NULL; static uint16_t arg_type = 0; static uint16_t arg_class = 0; static bool arg_legend = true; static uint64_t arg_flags = 0; static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; static PagerFlags arg_pager_flags = 0; bool arg_ifindex_permissive = false; /* If true, don't generate an error if the specified interface index doesn't exist */ static const char *arg_service_family = NULL; typedef enum RawType { RAW_NONE, RAW_PAYLOAD, RAW_PACKET, } RawType; static RawType arg_raw = RAW_NONE; ExecutionMode arg_mode = MODE_RESOLVE_HOST; char **arg_set_dns = NULL; char **arg_set_domain = NULL; static const char *arg_set_llmnr = NULL; static const char *arg_set_mdns = NULL; static const char *arg_set_dns_over_tls = NULL; static const char *arg_set_dnssec = NULL; static char **arg_set_nta = NULL; STATIC_DESTRUCTOR_REGISTER(arg_ifname, freep); STATIC_DESTRUCTOR_REGISTER(arg_set_dns, strv_freep); STATIC_DESTRUCTOR_REGISTER(arg_set_domain, strv_freep); STATIC_DESTRUCTOR_REGISTER(arg_set_nta, strv_freep); typedef enum StatusMode { STATUS_ALL, STATUS_DNS, STATUS_DOMAIN, STATUS_DEFAULT_ROUTE, STATUS_LLMNR, STATUS_MDNS, STATUS_PRIVATE, STATUS_DNSSEC, STATUS_NTA, } StatusMode; typedef struct InterfaceInfo { int index; const char *name; } InterfaceInfo; static int interface_info_compare(const InterfaceInfo *a, const InterfaceInfo *b) { int r; r = CMP(a->index, b->index); if (r != 0) return r; return strcmp_ptr(a->name, b->name); } int ifname_mangle_full(const char *s, bool drop_protocol_specifier) { _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; _cleanup_strv_free_ char **found = NULL; int r; assert(s); if (drop_protocol_specifier) { _cleanup_free_ char *buf = NULL; int ifindex_longest_name = -ENODEV; /* When invoked as resolvconf, drop the protocol specifier(s) at the end. */ buf = strdup(s); if (!buf) return log_oom(); for (;;) { r = rtnl_resolve_interface(&rtnl, buf); if (r > 0) { if (ifindex_longest_name <= 0) ifindex_longest_name = r; r = strv_extend(&found, buf); if (r < 0) return log_oom(); } char *dot = strrchr(buf, '.'); if (!dot) break; *dot = '\0'; } unsigned n = strv_length(found); if (n > 1) { _cleanup_free_ char *joined = NULL; joined = strv_join(found, ", "); log_warning("Found multiple interfaces (%s) matching with '%s'. Using '%s' (ifindex=%i).", strna(joined), s, found[0], ifindex_longest_name); } else if (n == 1) { const char *proto; proto = ASSERT_PTR(startswith(s, found[0])); if (!isempty(proto)) log_info("Dropped protocol specifier '%s' from '%s'. Using '%s' (ifindex=%i).", proto, s, found[0], ifindex_longest_name); } r = ifindex_longest_name; } else r = rtnl_resolve_interface(&rtnl, s); if (r < 0) { if (ERRNO_IS_DEVICE_ABSENT(r) && arg_ifindex_permissive) { log_debug_errno(r, "Interface '%s' not found, but -f specified, ignoring: %m", s); return 0; /* done */ } return log_error_errno(r, "Failed to resolve interface \"%s\": %m", s); } if (arg_ifindex > 0 && arg_ifindex != r) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Specified multiple different interfaces. Refusing."); arg_ifindex = r; return free_and_strdup_warn(&arg_ifname, found ? found[0] : s); /* found */ } static void print_source(uint64_t flags, usec_t rtt) { if (!arg_legend) return; if (flags == 0) return; printf("\n%s-- Information acquired via", ansi_grey()); printf(" protocol%s%s%s%s%s", flags & SD_RESOLVED_DNS ? " DNS" :"", flags & SD_RESOLVED_LLMNR_IPV4 ? " LLMNR/IPv4" : "", flags & SD_RESOLVED_LLMNR_IPV6 ? " LLMNR/IPv6" : "", flags & SD_RESOLVED_MDNS_IPV4 ? " mDNS/IPv4" : "", flags & SD_RESOLVED_MDNS_IPV6 ? " mDNS/IPv6" : ""); printf(" in %s.%s\n" "%s-- Data is authenticated: %s; Data was acquired via local or encrypted transport: %s%s\n", FORMAT_TIMESPAN(rtt, 100), ansi_normal(), ansi_grey(), yes_no(flags & SD_RESOLVED_AUTHENTICATED), yes_no(flags & SD_RESOLVED_CONFIDENTIAL), ansi_normal()); if ((flags & (SD_RESOLVED_FROM_MASK|SD_RESOLVED_SYNTHETIC)) != 0) printf("%s-- Data from:%s%s%s%s%s%s\n", ansi_grey(), FLAGS_SET(flags, SD_RESOLVED_SYNTHETIC) ? " synthetic" : "", FLAGS_SET(flags, SD_RESOLVED_FROM_CACHE) ? " cache" : "", FLAGS_SET(flags, SD_RESOLVED_FROM_ZONE) ? " zone" : "", FLAGS_SET(flags, SD_RESOLVED_FROM_TRUST_ANCHOR) ? " trust-anchor" : "", FLAGS_SET(flags, SD_RESOLVED_FROM_NETWORK) ? " network" : "", ansi_normal()); } static void print_ifindex_comment(int printed_so_far, int ifindex) { char ifname[IF_NAMESIZE]; int r; if (ifindex <= 0) return; r = format_ifname(ifindex, ifname); if (r < 0) return (void) log_warning_errno(r, "Failed to resolve interface name for index %i, ignoring: %m", ifindex); printf("%*s%s-- link: %s%s", 60 > printed_so_far ? 60 - printed_so_far : 0, " ", /* Align comment to the 60th column */ ansi_grey(), ifname, ansi_normal()); } static int resolve_host_error(const char *name, int r, const sd_bus_error *error) { if (sd_bus_error_has_name(error, BUS_ERROR_DNS_NXDOMAIN)) return log_error_errno(r, "%s: %s", name, bus_error_message(error, r)); return log_error_errno(r, "%s: resolve call failed: %s", name, bus_error_message(error, r)); } static int resolve_host(sd_bus *bus, const char *name) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; const char *canonical = NULL; unsigned c = 0; uint64_t flags; usec_t ts; int r; assert(name); log_debug("Resolving %s (family %s, interface %s).", name, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname); r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveHostname"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "isit", arg_ifindex, name, arg_family, arg_flags); if (r < 0) return bus_log_create_error(r); ts = now(CLOCK_MONOTONIC); r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply); if (r < 0) return resolve_host_error(name, r, &error); ts = now(CLOCK_MONOTONIC) - ts; r = sd_bus_message_enter_container(reply, 'a', "(iiay)"); if (r < 0) return bus_log_parse_error(r); while ((r = sd_bus_message_enter_container(reply, 'r', "iiay")) > 0) { _cleanup_free_ char *pretty = NULL; int ifindex, family, k; union in_addr_union a; assert_cc(sizeof(int) == sizeof(int32_t)); r = sd_bus_message_read(reply, "i", &ifindex); if (r < 0) return bus_log_parse_error(r); sd_bus_error_free(&error); r = bus_message_read_in_addr_auto(reply, &error, &family, &a); if (r < 0 && !sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) return log_error_errno(r, "%s: systemd-resolved returned invalid result: %s", name, bus_error_message(&error, r)); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); if (sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) { log_debug_errno(r, "%s: systemd-resolved returned invalid result, ignoring: %s", name, bus_error_message(&error, r)); continue; } r = in_addr_ifindex_to_string(family, &a, ifindex, &pretty); if (r < 0) return log_error_errno(r, "Failed to print address for %s: %m", name); k = printf("%*s%s %s%s%s", (int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ", ansi_highlight(), pretty, ansi_normal()); print_ifindex_comment(k, ifindex); fputc('\n', stdout); c++; } if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_read(reply, "st", &canonical, &flags); if (r < 0) return bus_log_parse_error(r); if (!streq(name, canonical)) printf("%*s%s (%s)\n", (int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ", canonical); if (c == 0) return log_error_errno(SYNTHETIC_ERRNO(ESRCH), "%s: no addresses found", name); print_source(flags, ts); return 0; } static int resolve_address(sd_bus *bus, int family, const union in_addr_union *address, int ifindex) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *pretty = NULL; uint64_t flags; unsigned c = 0; usec_t ts; int r; assert(bus); assert(IN_SET(family, AF_INET, AF_INET6)); assert(address); if (ifindex <= 0) ifindex = arg_ifindex; r = in_addr_ifindex_to_string(family, address, ifindex, &pretty); if (r < 0) return log_oom(); log_debug("Resolving %s.", pretty); r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveAddress"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "ii", ifindex, family); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_array(req, 'y', address, FAMILY_ADDRESS_SIZE(family)); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "t", arg_flags); if (r < 0) return bus_log_create_error(r); ts = now(CLOCK_MONOTONIC); r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply); if (r < 0) return log_error_errno(r, "%s: resolve call failed: %s", pretty, bus_error_message(&error, r)); ts = now(CLOCK_MONOTONIC) - ts; r = sd_bus_message_enter_container(reply, 'a', "(is)"); if (r < 0) return bus_log_create_error(r); while ((r = sd_bus_message_enter_container(reply, 'r', "is")) > 0) { const char *n; int k; assert_cc(sizeof(int) == sizeof(int32_t)); r = sd_bus_message_read(reply, "is", &ifindex, &n); if (r < 0) return r; r = sd_bus_message_exit_container(reply); if (r < 0) return r; k = printf("%*s%s %s%s%s", (int) strlen(pretty), c == 0 ? pretty : "", c == 0 ? ":" : " ", ansi_highlight(), n, ansi_normal()); print_ifindex_comment(k, ifindex); fputc('\n', stdout); c++; } if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_read(reply, "t", &flags); if (r < 0) return bus_log_parse_error(r); if (c == 0) return log_error_errno(SYNTHETIC_ERRNO(ESRCH), "%s: no names found", pretty); print_source(flags, ts); return 0; } static int output_rr_packet(const void *d, size_t l, int ifindex) { _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; int r; r = dns_resource_record_new_from_raw(&rr, d, l); if (r < 0) return log_error_errno(r, "Failed to parse RR: %m"); if (arg_raw == RAW_PAYLOAD) { void *data; ssize_t k; k = dns_resource_record_payload(rr, &data); if (k < 0) return log_error_errno(k, "Cannot dump RR: %m"); fwrite(data, 1, k, stdout); } else { const char *s; int k; s = dns_resource_record_to_string(rr); if (!s) return log_oom(); k = printf("%s", s); print_ifindex_comment(k, ifindex); fputc('\n', stdout); } return 0; } static int idna_candidate(const char *name, char **ret) { _cleanup_free_ char *idnafied = NULL; int r; assert(name); assert(ret); r = dns_name_apply_idna(name, &idnafied); if (r < 0) return log_error_errno(r, "Failed to apply IDNA to name '%s': %m", name); if (r > 0 && !streq(name, idnafied)) { *ret = TAKE_PTR(idnafied); return true; } *ret = NULL; return false; } static bool single_label_nonsynthetic(const char *name) { _cleanup_free_ char *first_label = NULL; int r; if (!dns_name_is_single_label(name)) return false; if (is_localhost(name) || is_gateway_hostname(name) || is_outbound_hostname(name) || is_dns_stub_hostname(name) || is_dns_proxy_stub_hostname(name)) return false; r = resolve_system_hostname(NULL, &first_label); if (r < 0) { log_warning_errno(r, "Failed to determine the hostname: %m"); return false; } return !streq(name, first_label); } static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_t type, bool warn_missing) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *idnafied = NULL; bool needs_authentication = false; unsigned n = 0; uint64_t flags; usec_t ts; int r; assert(name); log_debug("Resolving %s %s %s (interface %s).", name, dns_class_to_string(class), dns_type_to_string(type), isempty(arg_ifname) ? "*" : arg_ifname); if (dns_name_dot_suffixed(name) == 0 && single_label_nonsynthetic(name)) log_notice("(Note that search domains are not appended when --type= is specified. " "Please specify fully qualified domain names, or remove --type= switch from invocation in order to request regular hostname resolution.)"); r = idna_candidate(name, &idnafied); if (r < 0) return r; if (r > 0) log_notice("(Note that IDNA translation is not applied when --type= is specified. " "Please specify translated domain names — i.e. '%s' — when resolving raw records, or remove --type= switch from invocation in order to request regular hostname resolution.", idnafied); r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveRecord"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "isqqt", arg_ifindex, name, class, type, arg_flags); if (r < 0) return bus_log_create_error(r); ts = now(CLOCK_MONOTONIC); r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply); if (r < 0) { if (warn_missing || r != -ENXIO) log_error("%s: resolve call failed: %s", name, bus_error_message(&error, r)); return r; } ts = now(CLOCK_MONOTONIC) - ts; r = sd_bus_message_enter_container(reply, 'a', "(iqqay)"); if (r < 0) return bus_log_parse_error(r); while ((r = sd_bus_message_enter_container(reply, 'r', "iqqay")) > 0) { uint16_t c, t; int ifindex; const void *d; size_t l; assert_cc(sizeof(int) == sizeof(int32_t)); r = sd_bus_message_read(reply, "iqq", &ifindex, &c, &t); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_read_array(reply, 'y', &d, &l); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); if (arg_raw == RAW_PACKET) { uint64_t u64 = htole64(l); fwrite(&u64, sizeof(u64), 1, stdout); fwrite(d, 1, l, stdout); } else { r = output_rr_packet(d, l, ifindex); if (r < 0) return r; } if (dns_type_needs_authentication(t)) needs_authentication = true; n++; } if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_read(reply, "t", &flags); if (r < 0) return bus_log_parse_error(r); if (n == 0) { if (warn_missing) log_error("%s: no records found", name); return -ESRCH; } print_source(flags, ts); if ((flags & SD_RESOLVED_AUTHENTICATED) == 0 && needs_authentication) { fflush(stdout); fprintf(stderr, "\n%s" "WARNING: The resources shown contain cryptographic key data which could not be\n" " authenticated. It is not suitable to authenticate any communication.\n" " This is usually indication that DNSSEC authentication was not enabled\n" " or is not available for the selected protocol or DNS servers.%s\n", ansi_highlight_red(), ansi_normal()); } return 0; } static int resolve_rfc4501(sd_bus *bus, const char *name) { uint16_t type = 0, class = 0; const char *p, *q, *n; int r; assert(bus); assert(name); assert(startswith(name, "dns:")); /* Parse RFC 4501 dns: URIs */ p = name + 4; if (p[0] == '/') { const char *e; if (p[1] != '/') goto invalid; e = strchr(p + 2, '/'); if (!e) goto invalid; if (e != p + 2) log_warning("DNS authority specification not supported; ignoring specified authority."); p = e + 1; } q = strchr(p, '?'); if (q) { n = strndupa_safe(p, q - p); q++; for (;;) { const char *f; f = startswith_no_case(q, "class="); if (f) { _cleanup_free_ char *t = NULL; const char *e; if (class != 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "DNS class specified twice."); e = strchrnul(f, ';'); t = strndup(f, e - f); if (!t) return log_oom(); r = dns_class_from_string(t); if (r < 0) return log_error_errno(r, "Unknown DNS class %s.", t); class = r; if (*e == ';') { q = e + 1; continue; } break; } f = startswith_no_case(q, "type="); if (f) { _cleanup_free_ char *t = NULL; const char *e; if (type != 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "DNS type specified twice."); e = strchrnul(f, ';'); t = strndup(f, e - f); if (!t) return log_oom(); r = dns_type_from_string(t); if (r < 0) return log_error_errno(r, "Unknown DNS type %s: %m", t); type = r; if (*e == ';') { q = e + 1; continue; } break; } goto invalid; } } else n = p; if (class == 0) class = arg_class ?: DNS_CLASS_IN; if (type == 0) type = arg_type ?: DNS_TYPE_A; return resolve_record(bus, n, class, type, true); invalid: return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid DNS URI: %s", name); } static int verb_query(int argc, char **argv, void *userdata) { sd_bus *bus = userdata; int q, r = 0; if (arg_type != 0) STRV_FOREACH(p, argv + 1) { q = resolve_record(bus, *p, arg_class, arg_type, true); if (q < 0) r = q; } else STRV_FOREACH(p, argv + 1) { if (startswith(*p, "dns:")) q = resolve_rfc4501(bus, *p); else { int family, ifindex; union in_addr_union a; q = in_addr_ifindex_from_string_auto(*p, &family, &a, &ifindex); if (q >= 0) q = resolve_address(bus, family, &a, ifindex); else q = resolve_host(bus, *p); } if (q < 0) r = q; } return r; } static int resolve_service(sd_bus *bus, const char *name, const char *type, const char *domain) { const char *canonical_name, *canonical_type, *canonical_domain; _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; size_t indent, sz; uint64_t flags; const char *p; unsigned c; usec_t ts; int r; assert(bus); assert(domain); name = empty_to_null(name); type = empty_to_null(type); if (name) log_debug("Resolving service \"%s\" of type %s in %s (family %s, interface %s).", name, type, domain, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname); else if (type) log_debug("Resolving service type %s of %s (family %s, interface %s).", type, domain, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname); else log_debug("Resolving service type %s (family %s, interface %s).", domain, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname); r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveService"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "isssit", arg_ifindex, name, type, domain, arg_family, arg_flags); if (r < 0) return bus_log_create_error(r); ts = now(CLOCK_MONOTONIC); r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply); if (r < 0) return log_error_errno(r, "Resolve call failed: %s", bus_error_message(&error, r)); ts = now(CLOCK_MONOTONIC) - ts; r = sd_bus_message_enter_container(reply, 'a', "(qqqsa(iiay)s)"); if (r < 0) return bus_log_parse_error(r); indent = (name ? strlen(name) + 1 : 0) + (type ? strlen(type) + 1 : 0) + strlen(domain) + 2; c = 0; while ((r = sd_bus_message_enter_container(reply, 'r', "qqqsa(iiay)s")) > 0) { uint16_t priority, weight, port; const char *hostname, *canonical; r = sd_bus_message_read(reply, "qqqs", &priority, &weight, &port, &hostname); if (r < 0) return bus_log_parse_error(r); if (name) printf("%*s%s", (int) strlen(name), c == 0 ? name : "", c == 0 ? "/" : " "); if (type) printf("%*s%s", (int) strlen(type), c == 0 ? type : "", c == 0 ? "/" : " "); printf("%*s%s %s:%u [priority=%u, weight=%u]\n", (int) strlen(domain), c == 0 ? domain : "", c == 0 ? ":" : " ", hostname, port, priority, weight); r = sd_bus_message_enter_container(reply, 'a', "(iiay)"); if (r < 0) return bus_log_parse_error(r); while ((r = sd_bus_message_enter_container(reply, 'r', "iiay")) > 0) { _cleanup_free_ char *pretty = NULL; int ifindex, family, k; union in_addr_union a; assert_cc(sizeof(int) == sizeof(int32_t)); r = sd_bus_message_read(reply, "i", &ifindex); if (r < 0) return bus_log_parse_error(r); sd_bus_error_free(&error); r = bus_message_read_in_addr_auto(reply, &error, &family, &a); if (r < 0 && !sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) return log_error_errno(r, "%s: systemd-resolved returned invalid result: %s", name, bus_error_message(&error, r)); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); if (sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) { log_debug_errno(r, "%s: systemd-resolved returned invalid result, ignoring: %s", name, bus_error_message(&error, r)); continue; } r = in_addr_ifindex_to_string(family, &a, ifindex, &pretty); if (r < 0) return log_error_errno(r, "Failed to print address for %s: %m", name); k = printf("%*s%s", (int) indent, "", pretty); print_ifindex_comment(k, ifindex); fputc('\n', stdout); } if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_read(reply, "s", &canonical); if (r < 0) return bus_log_parse_error(r); if (!streq(hostname, canonical)) printf("%*s(%s)\n", (int) indent, "", canonical); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); c++; } if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_enter_container(reply, 'a', "ay"); if (r < 0) return bus_log_parse_error(r); while ((r = sd_bus_message_read_array(reply, 'y', (const void**) &p, &sz)) > 0) { _cleanup_free_ char *escaped = NULL; escaped = cescape_length(p, sz); if (!escaped) return log_oom(); printf("%*s%s\n", (int) indent, "", escaped); } if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) return bus_log_parse_error(r); r = sd_bus_message_read(reply, "ssst", &canonical_name, &canonical_type, &canonical_domain, &flags); if (r < 0) return bus_log_parse_error(r); canonical_name = empty_to_null(canonical_name); canonical_type = empty_to_null(canonical_type); if (!streq_ptr(name, canonical_name) || !streq_ptr(type, canonical_type) || !streq_ptr(domain, canonical_domain)) { printf("%*s(", (int) indent, ""); if (canonical_name) printf("%s/", canonical_name); if (canonical_type) printf("%s/", canonical_type); printf("%s)\n", canonical_domain); } print_source(flags, ts); return 0; } static int verb_service(int argc, char **argv, void *userdata) { sd_bus *bus = userdata; if (argc == 2) return resolve_service(bus, NULL, NULL, argv[1]); else if (argc == 3) return resolve_service(bus, NULL, argv[1], argv[2]); else return resolve_service(bus, argv[1], argv[2], argv[3]); } static int resolve_openpgp(sd_bus *bus, const char *address) { const char *domain, *full; int r; _cleanup_free_ char *hashed = NULL; assert(bus); assert(address); domain = strrchr(address, '@'); if (!domain) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Address does not contain '@': \"%s\"", address); if (domain == address || domain[1] == '\0') return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Address starts or ends with '@': \"%s\"", address); domain++; r = string_hashsum_sha256(address, domain - 1 - address, &hashed); if (r < 0) return log_error_errno(r, "Hashing failed: %m"); strshorten(hashed, 56); full = strjoina(hashed, "._openpgpkey.", domain); log_debug("Looking up \"%s\".", full); r = resolve_record(bus, full, arg_class ?: DNS_CLASS_IN, arg_type ?: DNS_TYPE_OPENPGPKEY, false); if (IN_SET(r, -ENXIO, -ESRCH)) { /* NXDOMAIN or NODATA? */ hashed = mfree(hashed); r = string_hashsum_sha224(address, domain - 1 - address, &hashed); if (r < 0) return log_error_errno(r, "Hashing failed: %m"); full = strjoina(hashed, "._openpgpkey.", domain); log_debug("Looking up \"%s\".", full); return resolve_record(bus, full, arg_class ?: DNS_CLASS_IN, arg_type ?: DNS_TYPE_OPENPGPKEY, true); } return r; } static int verb_openpgp(int argc, char **argv, void *userdata) { sd_bus *bus = userdata; int q, r = 0; STRV_FOREACH(p, argv + 1) { q = resolve_openpgp(bus, *p); if (q < 0) r = q; } return r; } static int resolve_tlsa(sd_bus *bus, const char *family, const char *address) { const char *port; uint16_t port_num = 443; _cleanup_free_ char *full = NULL; int r; assert(bus); assert(address); port = strrchr(address, ':'); if (port) { r = parse_ip_port(port + 1, &port_num); if (r < 0) return log_error_errno(r, "Invalid port \"%s\".", port + 1); address = strndupa_safe(address, port - address); } r = asprintf(&full, "_%u._%s.%s", port_num, family, address); if (r < 0) return log_oom(); log_debug("Looking up \"%s\".", full); return resolve_record(bus, full, arg_class ?: DNS_CLASS_IN, arg_type ?: DNS_TYPE_TLSA, true); } static bool service_family_is_valid(const char *s) { return STR_IN_SET(s, "tcp", "udp", "sctp"); } static int verb_tlsa(int argc, char **argv, void *userdata) { sd_bus *bus = userdata; char **args = argv + 1; const char *family = "tcp"; int q, r = 0; if (service_family_is_valid(argv[1])) { family = argv[1]; args++; } STRV_FOREACH(p, args) { q = resolve_tlsa(bus, family, *p); if (q < 0) r = q; } return r; } static int show_statistics(int argc, char **argv, void *userdata) { _cleanup_(table_unrefp) Table *table = NULL; JsonVariant *reply = NULL; _cleanup_(varlink_unrefp) Varlink *vl = NULL; int r; r = varlink_connect_address(&vl, "/run/systemd/resolve/io.systemd.Resolve.Monitor"); if (r < 0) return log_error_errno(r, "Failed to connect to query monitoring service /run/systemd/resolve/io.systemd.Resolve.Monitor: %m"); r = varlink_call(vl, "io.systemd.Resolve.Monitor.DumpStatistics", NULL, &reply, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to issue DumpStatistics() varlink call: %m"); if (!FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) return json_variant_dump(reply, arg_json_format_flags, NULL, NULL); struct statistics { JsonVariant *transactions; JsonVariant *cache; JsonVariant *dnssec; } statistics; static const JsonDispatch statistics_dispatch_table[] = { { "transactions", JSON_VARIANT_OBJECT, json_dispatch_variant_noref, offsetof(struct statistics, transactions), JSON_MANDATORY }, { "cache", JSON_VARIANT_OBJECT, json_dispatch_variant_noref, offsetof(struct statistics, cache), JSON_MANDATORY }, { "dnssec", JSON_VARIANT_OBJECT, json_dispatch_variant_noref, offsetof(struct statistics, dnssec), JSON_MANDATORY }, {}, }; r = json_dispatch(reply, statistics_dispatch_table, JSON_LOG, &statistics); if (r < 0) return r; struct transactions { uint64_t n_current_transactions; uint64_t n_transactions_total; uint64_t n_timeouts_total; uint64_t n_timeouts_served_stale_total; uint64_t n_failure_responses_total; uint64_t n_failure_responses_served_stale_total; } transactions; static const JsonDispatch transactions_dispatch_table[] = { { "currentTransactions", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct transactions, n_current_transactions), JSON_MANDATORY }, { "totalTransactions", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct transactions, n_transactions_total), JSON_MANDATORY }, { "totalTimeouts", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct transactions, n_timeouts_total), JSON_MANDATORY }, { "totalTimeoutsServedStale", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct transactions, n_timeouts_served_stale_total), JSON_MANDATORY }, { "totalFailedResponses", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct transactions, n_failure_responses_total), JSON_MANDATORY }, { "totalFailedResponsesServedStale", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct transactions, n_failure_responses_served_stale_total), JSON_MANDATORY }, {}, }; r = json_dispatch(statistics.transactions, transactions_dispatch_table, JSON_LOG, &transactions); if (r < 0) return r; struct cache { uint64_t cache_size; uint64_t n_cache_hit; uint64_t n_cache_miss; } cache; static const JsonDispatch cache_dispatch_table[] = { { "size", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct cache, cache_size), JSON_MANDATORY }, { "hits", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct cache, n_cache_hit), JSON_MANDATORY }, { "misses", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct cache, n_cache_miss), JSON_MANDATORY }, {}, }; r = json_dispatch(statistics.cache, cache_dispatch_table, JSON_LOG, &cache); if (r < 0) return r; struct dnsssec { uint64_t n_dnssec_secure; uint64_t n_dnssec_insecure; uint64_t n_dnssec_bogus; uint64_t n_dnssec_indeterminate; } dnsssec; static const JsonDispatch dnssec_dispatch_table[] = { { "secure", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct dnsssec, n_dnssec_secure), JSON_MANDATORY }, { "insecure", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct dnsssec, n_dnssec_insecure), JSON_MANDATORY }, { "bogus", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct dnsssec, n_dnssec_bogus), JSON_MANDATORY }, { "indeterminate", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct dnsssec, n_dnssec_indeterminate), JSON_MANDATORY }, {}, }; r = json_dispatch(statistics.dnssec, dnssec_dispatch_table, JSON_LOG, &dnsssec); if (r < 0) return r; table = table_new_vertical(); if (!table) return log_oom(); r = table_add_many(table, TABLE_STRING, "Transactions", TABLE_SET_COLOR, ansi_highlight(), TABLE_SET_ALIGN_PERCENT, 0, TABLE_EMPTY, TABLE_FIELD, "Current Transactions", TABLE_SET_ALIGN_PERCENT, 100, TABLE_UINT64, transactions.n_current_transactions, TABLE_SET_ALIGN_PERCENT, 100, TABLE_FIELD, "Total Transactions", TABLE_UINT64, transactions.n_transactions_total, TABLE_EMPTY, TABLE_EMPTY, TABLE_STRING, "Cache", TABLE_SET_COLOR, ansi_highlight(), TABLE_SET_ALIGN_PERCENT, 0, TABLE_EMPTY, TABLE_FIELD, "Current Cache Size", TABLE_SET_ALIGN_PERCENT, 100, TABLE_UINT64, cache.cache_size, TABLE_FIELD, "Cache Hits", TABLE_UINT64, cache.n_cache_hit, TABLE_FIELD, "Cache Misses", TABLE_UINT64, cache.n_cache_miss, TABLE_EMPTY, TABLE_EMPTY, TABLE_STRING, "Failure Transactions", TABLE_SET_COLOR, ansi_highlight(), TABLE_SET_ALIGN_PERCENT, 0, TABLE_EMPTY, TABLE_FIELD, "Total Timeouts", TABLE_SET_ALIGN_PERCENT, 100, TABLE_UINT64, transactions.n_timeouts_total, TABLE_FIELD, "Total Timeouts (Stale Data Served)", TABLE_UINT64, transactions.n_timeouts_served_stale_total, TABLE_FIELD, "Total Failure Responses", TABLE_UINT64, transactions.n_failure_responses_total, TABLE_FIELD, "Total Failure Responses (Stale Data Served)", TABLE_UINT64, transactions.n_failure_responses_served_stale_total, TABLE_EMPTY, TABLE_EMPTY, TABLE_STRING, "DNSSEC Verdicts", TABLE_SET_COLOR, ansi_highlight(), TABLE_SET_ALIGN_PERCENT, 0, TABLE_EMPTY, TABLE_FIELD, "Secure", TABLE_SET_ALIGN_PERCENT, 100, TABLE_UINT64, dnsssec.n_dnssec_secure, TABLE_FIELD, "Insecure", TABLE_UINT64, dnsssec.n_dnssec_insecure, TABLE_FIELD, "Bogus", TABLE_UINT64, dnsssec.n_dnssec_bogus, TABLE_FIELD, "Indeterminate", TABLE_UINT64, dnsssec.n_dnssec_indeterminate ); if (r < 0) return table_log_add_error(r); r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); return 0; } static int reset_statistics(int argc, char **argv, void *userdata) { JsonVariant *reply = NULL; _cleanup_(varlink_unrefp) Varlink *vl = NULL; int r; r = varlink_connect_address(&vl, "/run/systemd/resolve/io.systemd.Resolve.Monitor"); if (r < 0) return log_error_errno(r, "Failed to connect to query monitoring service /run/systemd/resolve/io.systemd.Resolve.Monitor: %m"); r = varlink_call(vl, "io.systemd.Resolve.Monitor.ResetStatistics", NULL, &reply, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to issue ResetStatistics() varlink call: %m"); if (!FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) return json_variant_dump(reply, arg_json_format_flags, NULL, NULL); return 0; } static int flush_caches(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = userdata; int r; r = bus_call_method(bus, bus_resolve_mgr, "FlushCaches", &error, NULL, NULL); if (r < 0) return log_error_errno(r, "Failed to flush caches: %s", bus_error_message(&error, r)); return 0; } static int reset_server_features(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = userdata; int r; r = bus_call_method(bus, bus_resolve_mgr, "ResetServerFeatures", &error, NULL, NULL); if (r < 0) return log_error_errno(r, "Failed to reset server features: %s", bus_error_message(&error, r)); return 0; } static int read_dns_server_one( sd_bus_message *m, bool with_ifindex, /* read "ifindex" reply that also carries an interface index */ bool extended, /* read "extended" reply, i.e. with port number and server name */ bool only_global, /* suppress entries with an (non-loopback) ifindex set (i.e. which are specific to some interface) */ char **ret) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *pretty = NULL; union in_addr_union a; const char *name = NULL; int32_t ifindex = 0; int family, r, k; uint16_t port = 0; assert(m); assert(ret); r = sd_bus_message_enter_container( m, 'r', with_ifindex ? (extended ? "iiayqs" : "iiay") : (extended ? "iayqs" : "iay")); if (r <= 0) return r; if (with_ifindex) { r = sd_bus_message_read(m, "i", &ifindex); if (r < 0) return r; } k = bus_message_read_in_addr_auto(m, &error, &family, &a); if (k < 0 && !sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) return k; if (extended) { r = sd_bus_message_read(m, "q", &port); if (r < 0) return r; r = sd_bus_message_read(m, "s", &name); if (r < 0) return r; } r = sd_bus_message_exit_container(m); if (r < 0) return r; if (k < 0) { log_debug("Invalid DNS server, ignoring: %s", bus_error_message(&error, k)); *ret = NULL; return 1; } if (only_global && ifindex > 0 && ifindex != LOOPBACK_IFINDEX) { /* This one has an (non-loopback) ifindex set, and we were told to suppress those. Hence do so. */ *ret = NULL; return 1; } r = in_addr_port_ifindex_name_to_string(family, &a, port, ifindex, name, &pretty); if (r < 0) return r; *ret = TAKE_PTR(pretty); return 1; } static int map_link_dns_servers_internal(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata, bool extended) { char ***l = ASSERT_PTR(userdata); int r; assert(bus); assert(member); assert(m); r = sd_bus_message_enter_container(m, 'a', extended ? "(iayqs)" : "(iay)"); if (r < 0) return r; for (;;) { _cleanup_free_ char *pretty = NULL; r = read_dns_server_one(m, /* with_ifindex= */ false, extended, /* only_global= */ false, &pretty); if (r < 0) return r; if (r == 0) break; if (isempty(pretty)) continue; r = strv_consume(l, TAKE_PTR(pretty)); if (r < 0) return r; } r = sd_bus_message_exit_container(m); if (r < 0) return r; return 0; } static int map_link_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { return map_link_dns_servers_internal(bus, member, m, error, userdata, false); } static int map_link_dns_servers_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { return map_link_dns_servers_internal(bus, member, m, error, userdata, true); } static int map_link_current_dns_server(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { assert(m); assert(userdata); return read_dns_server_one(m, /* with_ifindex= */ false, /* extended= */ false, /* only_global= */ false, userdata); } static int map_link_current_dns_server_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { assert(m); assert(userdata); return read_dns_server_one(m, /* with_ifindex= */ false, /* extended= */ true, /* only_global= */ false, userdata); } static int read_domain_one(sd_bus_message *m, bool with_ifindex, char **ret) { _cleanup_free_ char *str = NULL; int ifindex, route_only, r; const char *domain; assert(m); assert(ret); if (with_ifindex) r = sd_bus_message_read(m, "(isb)", &ifindex, &domain, &route_only); else r = sd_bus_message_read(m, "(sb)", &domain, &route_only); if (r <= 0) return r; if (with_ifindex && ifindex != 0) { /* only show the global ones here */ *ret = NULL; return 1; } if (route_only) str = strjoin("~", domain); else str = strdup(domain); if (!str) return -ENOMEM; *ret = TAKE_PTR(str); return 1; } static int map_link_domains(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { char ***l = ASSERT_PTR(userdata); int r; assert(bus); assert(member); assert(m); r = sd_bus_message_enter_container(m, 'a', "(sb)"); if (r < 0) return r; for (;;) { _cleanup_free_ char *pretty = NULL; r = read_domain_one(m, false, &pretty); if (r < 0) return r; if (r == 0) break; if (isempty(pretty)) continue; r = strv_consume(l, TAKE_PTR(pretty)); if (r < 0) return r; } r = sd_bus_message_exit_container(m); if (r < 0) return r; return 0; } static int status_print_strv_ifindex(int ifindex, const char *ifname, char **p) { const unsigned indent = strlen("Global: "); /* Use the same indentation everywhere to make things nice */ int pos1, pos2; if (ifname) printf("%s%nLink %i (%s)%n%s:", ansi_highlight(), &pos1, ifindex, ifname, &pos2, ansi_normal()); else printf("%s%nGlobal%n%s:", ansi_highlight(), &pos1, &pos2, ansi_normal()); size_t cols = columns(), position = pos2 - pos1 + 2; STRV_FOREACH(i, p) { size_t our_len = utf8_console_width(*i); /* This returns -1 on invalid utf-8 (which shouldn't happen). * If that happens, we'll just print one item per line. */ if (position <= indent || size_add(size_add(position, 1), our_len) < cols) { printf(" %s", *i); position = size_add(size_add(position, 1), our_len); } else { printf("\n%*s%s", (int) indent, "", *i); position = size_add(our_len, indent); } } printf("\n"); return 0; } static int status_print_strv_global(char **p) { return status_print_strv_ifindex(0, NULL, p); } typedef struct LinkInfo { uint64_t scopes_mask; const char *llmnr; const char *mdns; const char *dns_over_tls; const char *dnssec; char *current_dns; char *current_dns_ex; char **dns; char **dns_ex; char **domains; char **ntas; bool dnssec_supported; bool default_route; } LinkInfo; typedef struct GlobalInfo { char *current_dns; char *current_dns_ex; char **dns; char **dns_ex; char **fallback_dns; char **fallback_dns_ex; char **domains; char **ntas; const char *llmnr; const char *mdns; const char *dns_over_tls; const char *dnssec; const char *resolv_conf_mode; bool dnssec_supported; } GlobalInfo; static void link_info_clear(LinkInfo *p) { free(p->current_dns); free(p->current_dns_ex); strv_free(p->dns); strv_free(p->dns_ex); strv_free(p->domains); strv_free(p->ntas); } static void global_info_clear(GlobalInfo *p) { free(p->current_dns); free(p->current_dns_ex); strv_free(p->dns); strv_free(p->dns_ex); strv_free(p->fallback_dns); strv_free(p->fallback_dns_ex); strv_free(p->domains); strv_free(p->ntas); } static int dump_list(Table *table, const char *field, char * const *l) { int r; if (strv_isempty(l)) return 0; r = table_add_many(table, TABLE_FIELD, field, TABLE_STRV_WRAPPED, l); if (r < 0) return table_log_add_error(r); return 0; } static int strv_extend_extended_bool(char ***strv, const char *name, const char *value) { int r; if (value) { r = parse_boolean(value); if (r >= 0) return strv_extendf(strv, "%s%s", plus_minus(r), name); } return strv_extendf(strv, "%s=%s", name, value ?: "???"); } static char** link_protocol_status(const LinkInfo *info) { _cleanup_strv_free_ char **s = NULL; if (strv_extendf(&s, "%sDefaultRoute", plus_minus(info->default_route)) < 0) return NULL; if (strv_extend_extended_bool(&s, "LLMNR", info->llmnr) < 0) return NULL; if (strv_extend_extended_bool(&s, "mDNS", info->mdns) < 0) return NULL; if (strv_extend_extended_bool(&s, "DNSOverTLS", info->dns_over_tls) < 0) return NULL; if (strv_extendf(&s, "DNSSEC=%s/%s", info->dnssec ?: "???", info->dnssec_supported ? "supported" : "unsupported") < 0) return NULL; return TAKE_PTR(s); } static char** global_protocol_status(const GlobalInfo *info) { _cleanup_strv_free_ char **s = NULL; if (strv_extend_extended_bool(&s, "LLMNR", info->llmnr) < 0) return NULL; if (strv_extend_extended_bool(&s, "mDNS", info->mdns) < 0) return NULL; if (strv_extend_extended_bool(&s, "DNSOverTLS", info->dns_over_tls) < 0) return NULL; if (strv_extendf(&s, "DNSSEC=%s/%s", info->dnssec ?: "???", info->dnssec_supported ? "supported" : "unsupported") < 0) return NULL; return TAKE_PTR(s); } static int status_ifindex(sd_bus *bus, int ifindex, const char *name, StatusMode mode, bool *empty_line) { static const struct bus_properties_map property_map[] = { { "ScopesMask", "t", NULL, offsetof(LinkInfo, scopes_mask) }, { "DNS", "a(iay)", map_link_dns_servers, offsetof(LinkInfo, dns) }, { "DNSEx", "a(iayqs)", map_link_dns_servers_ex, offsetof(LinkInfo, dns_ex) }, { "CurrentDNSServer", "(iay)", map_link_current_dns_server, offsetof(LinkInfo, current_dns) }, { "CurrentDNSServerEx", "(iayqs)", map_link_current_dns_server_ex, offsetof(LinkInfo, current_dns_ex) }, { "Domains", "a(sb)", map_link_domains, offsetof(LinkInfo, domains) }, { "DefaultRoute", "b", NULL, offsetof(LinkInfo, default_route) }, { "LLMNR", "s", NULL, offsetof(LinkInfo, llmnr) }, { "MulticastDNS", "s", NULL, offsetof(LinkInfo, mdns) }, { "DNSOverTLS", "s", NULL, offsetof(LinkInfo, dns_over_tls) }, { "DNSSEC", "s", NULL, offsetof(LinkInfo, dnssec) }, { "DNSSECNegativeTrustAnchors", "as", bus_map_strv_sort, offsetof(LinkInfo, ntas) }, { "DNSSECSupported", "b", NULL, offsetof(LinkInfo, dnssec_supported) }, {} }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(link_info_clear) LinkInfo link_info = {}; _cleanup_(table_unrefp) Table *table = NULL; _cleanup_free_ char *p = NULL; char ifi[DECIMAL_STR_MAX(int)], ifname[IF_NAMESIZE]; int r; assert(bus); assert(ifindex > 0); if (!name) { r = format_ifname(ifindex, ifname); if (r < 0) return log_error_errno(r, "Failed to resolve interface name for %i: %m", ifindex); name = ifname; } xsprintf(ifi, "%i", ifindex); r = sd_bus_path_encode("/org/freedesktop/resolve1/link", ifi, &p); if (r < 0) return log_oom(); r = bus_map_all_properties(bus, "org.freedesktop.resolve1", p, property_map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &link_info); if (r < 0) return log_error_errno(r, "Failed to get link data for %i: %s", ifindex, bus_error_message(&error, r)); pager_open(arg_pager_flags); if (mode == STATUS_DNS) return status_print_strv_ifindex(ifindex, name, link_info.dns_ex ?: link_info.dns); if (mode == STATUS_DOMAIN) return status_print_strv_ifindex(ifindex, name, link_info.domains); if (mode == STATUS_NTA) return status_print_strv_ifindex(ifindex, name, link_info.ntas); if (mode == STATUS_DEFAULT_ROUTE) { printf("%sLink %i (%s)%s: %s\n", ansi_highlight(), ifindex, name, ansi_normal(), yes_no(link_info.default_route)); return 0; } if (mode == STATUS_LLMNR) { printf("%sLink %i (%s)%s: %s\n", ansi_highlight(), ifindex, name, ansi_normal(), strna(link_info.llmnr)); return 0; } if (mode == STATUS_MDNS) { printf("%sLink %i (%s)%s: %s\n", ansi_highlight(), ifindex, name, ansi_normal(), strna(link_info.mdns)); return 0; } if (mode == STATUS_PRIVATE) { printf("%sLink %i (%s)%s: %s\n", ansi_highlight(), ifindex, name, ansi_normal(), strna(link_info.dns_over_tls)); return 0; } if (mode == STATUS_DNSSEC) { printf("%sLink %i (%s)%s: %s\n", ansi_highlight(), ifindex, name, ansi_normal(), strna(link_info.dnssec)); return 0; } if (empty_line && *empty_line) fputc('\n', stdout); printf("%sLink %i (%s)%s\n", ansi_highlight(), ifindex, name, ansi_normal()); table = table_new_vertical(); if (!table) return log_oom(); r = table_add_many(table, TABLE_FIELD, "Current Scopes", TABLE_SET_MINIMUM_WIDTH, 19); if (r < 0) return table_log_add_error(r); if (link_info.scopes_mask == 0) r = table_add_cell(table, NULL, TABLE_STRING, "none"); else { _cleanup_free_ char *buf = NULL; size_t len; if (asprintf(&buf, "%s%s%s%s%s", link_info.scopes_mask & SD_RESOLVED_DNS ? "DNS " : "", link_info.scopes_mask & SD_RESOLVED_LLMNR_IPV4 ? "LLMNR/IPv4 " : "", link_info.scopes_mask & SD_RESOLVED_LLMNR_IPV6 ? "LLMNR/IPv6 " : "", link_info.scopes_mask & SD_RESOLVED_MDNS_IPV4 ? "mDNS/IPv4 " : "", link_info.scopes_mask & SD_RESOLVED_MDNS_IPV6 ? "mDNS/IPv6 " : "") < 0) return log_oom(); len = strlen(buf); assert(len > 0); buf[len - 1] = '\0'; r = table_add_cell(table, NULL, TABLE_STRING, buf); } if (r < 0) return table_log_add_error(r); _cleanup_strv_free_ char **pstatus = link_protocol_status(&link_info); if (!pstatus) return log_oom(); r = table_add_many(table, TABLE_FIELD, "Protocols", TABLE_STRV_WRAPPED, pstatus); if (r < 0) return table_log_add_error(r); if (link_info.current_dns) { r = table_add_many(table, TABLE_FIELD, "Current DNS Server", TABLE_STRING, link_info.current_dns_ex ?: link_info.current_dns); if (r < 0) return table_log_add_error(r); } r = dump_list(table, "DNS Servers", link_info.dns_ex ?: link_info.dns); if (r < 0) return r; r = dump_list(table, "DNS Domain", link_info.domains); if (r < 0) return r; r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); if (empty_line) *empty_line = true; return 0; } static int map_global_dns_servers_internal( sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata, bool extended) { char ***l = ASSERT_PTR(userdata); int r; assert(bus); assert(member); assert(m); r = sd_bus_message_enter_container(m, 'a', extended ? "(iiayqs)" : "(iiay)"); if (r < 0) return r; for (;;) { _cleanup_free_ char *pretty = NULL; r = read_dns_server_one(m, /* with_ifindex= */ true, extended, /* only_global= */ true, &pretty); if (r < 0) return r; if (r == 0) break; if (isempty(pretty)) continue; r = strv_consume(l, TAKE_PTR(pretty)); if (r < 0) return r; } r = sd_bus_message_exit_container(m); if (r < 0) return r; return 0; } static int map_global_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { return map_global_dns_servers_internal(bus, member, m, error, userdata, /* extended= */ false); } static int map_global_dns_servers_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { return map_global_dns_servers_internal(bus, member, m, error, userdata, /* extended= */ true); } static int map_global_current_dns_server(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { return read_dns_server_one(m, /* with_ifindex= */ true, /* extended= */ false, /* only_global= */ true, userdata); } static int map_global_current_dns_server_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { return read_dns_server_one(m, /* with_ifindex= */ true, /* extended= */ true, /* only_global= */ true, userdata); } static int map_global_domains(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { char ***l = ASSERT_PTR(userdata); int r; assert(bus); assert(member); assert(m); r = sd_bus_message_enter_container(m, 'a', "(isb)"); if (r < 0) return r; for (;;) { _cleanup_free_ char *pretty = NULL; r = read_domain_one(m, true, &pretty); if (r < 0) return r; if (r == 0) break; if (isempty(pretty)) continue; r = strv_consume(l, TAKE_PTR(pretty)); if (r < 0) return r; } r = sd_bus_message_exit_container(m); if (r < 0) return r; strv_sort(*l); return 0; } static int status_global(sd_bus *bus, StatusMode mode, bool *empty_line) { static const struct bus_properties_map property_map[] = { { "DNS", "a(iiay)", map_global_dns_servers, offsetof(GlobalInfo, dns) }, { "DNSEx", "a(iiayqs)", map_global_dns_servers_ex, offsetof(GlobalInfo, dns_ex) }, { "FallbackDNS", "a(iiay)", map_global_dns_servers, offsetof(GlobalInfo, fallback_dns) }, { "FallbackDNSEx", "a(iiayqs)", map_global_dns_servers_ex, offsetof(GlobalInfo, fallback_dns_ex) }, { "CurrentDNSServer", "(iiay)", map_global_current_dns_server, offsetof(GlobalInfo, current_dns) }, { "CurrentDNSServerEx", "(iiayqs)", map_global_current_dns_server_ex, offsetof(GlobalInfo, current_dns_ex) }, { "Domains", "a(isb)", map_global_domains, offsetof(GlobalInfo, domains) }, { "DNSSECNegativeTrustAnchors", "as", bus_map_strv_sort, offsetof(GlobalInfo, ntas) }, { "LLMNR", "s", NULL, offsetof(GlobalInfo, llmnr) }, { "MulticastDNS", "s", NULL, offsetof(GlobalInfo, mdns) }, { "DNSOverTLS", "s", NULL, offsetof(GlobalInfo, dns_over_tls) }, { "DNSSEC", "s", NULL, offsetof(GlobalInfo, dnssec) }, { "DNSSECSupported", "b", NULL, offsetof(GlobalInfo, dnssec_supported) }, { "ResolvConfMode", "s", NULL, offsetof(GlobalInfo, resolv_conf_mode) }, {} }; _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; _cleanup_(global_info_clear) GlobalInfo global_info = {}; _cleanup_(table_unrefp) Table *table = NULL; int r; assert(bus); assert(empty_line); r = bus_map_all_properties(bus, "org.freedesktop.resolve1", "/org/freedesktop/resolve1", property_map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &global_info); if (r < 0) return log_error_errno(r, "Failed to get global data: %s", bus_error_message(&error, r)); pager_open(arg_pager_flags); if (mode == STATUS_DNS) return status_print_strv_global(global_info.dns_ex ?: global_info.dns); if (mode == STATUS_DOMAIN) return status_print_strv_global(global_info.domains); if (mode == STATUS_NTA) return status_print_strv_global(global_info.ntas); if (mode == STATUS_LLMNR) { printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(), strna(global_info.llmnr)); return 0; } if (mode == STATUS_MDNS) { printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(), strna(global_info.mdns)); return 0; } if (mode == STATUS_PRIVATE) { printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(), strna(global_info.dns_over_tls)); return 0; } if (mode == STATUS_DNSSEC) { printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(), strna(global_info.dnssec)); return 0; } printf("%sGlobal%s\n", ansi_highlight(), ansi_normal()); table = table_new_vertical(); if (!table) return log_oom(); _cleanup_strv_free_ char **pstatus = global_protocol_status(&global_info); if (!pstatus) return log_oom(); r = table_add_many(table, TABLE_FIELD, "Protocols", TABLE_SET_MINIMUM_WIDTH, 19, TABLE_STRV_WRAPPED, pstatus); if (r < 0) return table_log_add_error(r); if (global_info.resolv_conf_mode) { r = table_add_many(table, TABLE_FIELD, "resolv.conf mode", TABLE_STRING, global_info.resolv_conf_mode); if (r < 0) return table_log_add_error(r); } if (global_info.current_dns) { r = table_add_many(table, TABLE_FIELD, "Current DNS Server", TABLE_STRING, global_info.current_dns_ex ?: global_info.current_dns); if (r < 0) return table_log_add_error(r); } r = dump_list(table, "DNS Servers", global_info.dns_ex ?: global_info.dns); if (r < 0) return r; r = dump_list(table, "Fallback DNS Servers", global_info.fallback_dns_ex ?: global_info.fallback_dns); if (r < 0) return r; r = dump_list(table, "DNS Domain", global_info.domains); if (r < 0) return r; r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); *empty_line = true; return 0; } static int status_all(sd_bus *bus, StatusMode mode) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; bool empty_line = false; int r; assert(bus); r = status_global(bus, mode, &empty_line); if (r < 0) return r; r = sd_netlink_open(&rtnl); if (r < 0) return log_error_errno(r, "Failed to connect to netlink: %m"); r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); if (r < 0) return rtnl_log_create_error(r); r = sd_netlink_message_set_request_dump(req, true); if (r < 0) return rtnl_log_create_error(r); r = sd_netlink_call(rtnl, req, 0, &reply); if (r < 0) return log_error_errno(r, "Failed to enumerate links: %m"); _cleanup_free_ InterfaceInfo *infos = NULL; size_t n_infos = 0; for (sd_netlink_message *i = reply; i; i = sd_netlink_message_next(i)) { const char *name; int ifindex; uint16_t type; r = sd_netlink_message_get_type(i, &type); if (r < 0) return rtnl_log_parse_error(r); if (type != RTM_NEWLINK) continue; r = sd_rtnl_message_link_get_ifindex(i, &ifindex); if (r < 0) return rtnl_log_parse_error(r); if (ifindex == LOOPBACK_IFINDEX) continue; r = sd_netlink_message_read_string(i, IFLA_IFNAME, &name); if (r < 0) return rtnl_log_parse_error(r); if (!GREEDY_REALLOC(infos, n_infos + 1)) return log_oom(); infos[n_infos++] = (InterfaceInfo) { ifindex, name }; } typesafe_qsort(infos, n_infos, interface_info_compare); r = 0; for (size_t i = 0; i < n_infos; i++) { int q = status_ifindex(bus, infos[i].index, infos[i].name, mode, &empty_line); if (q < 0 && r >= 0) r = q; } return r; } static int verb_status(int argc, char **argv, void *userdata) { sd_bus *bus = userdata; _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; int r = 0; if (argc > 1) { bool empty_line = false; STRV_FOREACH(ifname, argv + 1) { int ifindex, q; ifindex = rtnl_resolve_interface(&rtnl, *ifname); if (ifindex < 0) { log_warning_errno(ifindex, "Failed to resolve interface \"%s\", ignoring: %m", *ifname); continue; } q = status_ifindex(bus, ifindex, NULL, STATUS_ALL, &empty_line); if (q < 0) r = q; } } else r = status_all(bus, STATUS_ALL); return r; } static int call_dns(sd_bus *bus, char **dns, const BusLocator *locator, sd_bus_error *error, bool extended) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL; int r; r = bus_message_new_method_call(bus, &req, locator, extended ? "SetLinkDNSEx" : "SetLinkDNS"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "i", arg_ifindex); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(req, 'a', extended ? "(iayqs)" : "(iay)"); if (r < 0) return bus_log_create_error(r); /* If only argument is the empty string, then call SetLinkDNS() with an * empty list, which will clear the list of domains for an interface. */ if (!strv_equal(dns, STRV_MAKE(""))) STRV_FOREACH(p, dns) { _cleanup_free_ char *name = NULL; struct in_addr_data data; uint16_t port; int ifindex; r = in_addr_port_ifindex_name_from_string_auto(*p, &data.family, &data.address, &port, &ifindex, &name); if (r < 0) return log_error_errno(r, "Failed to parse DNS server address: %s", *p); if (ifindex != 0 && ifindex != arg_ifindex) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid ifindex: %i", ifindex); r = sd_bus_message_open_container(req, 'r', extended ? "iayqs" : "iay"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "i", data.family); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_array(req, 'y', &data.address, FAMILY_ADDRESS_SIZE(data.family)); if (r < 0) return bus_log_create_error(r); if (extended) { r = sd_bus_message_append(req, "q", port); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "s", name); if (r < 0) return bus_log_create_error(r); } r = sd_bus_message_close_container(req); if (r < 0) return bus_log_create_error(r); } r = sd_bus_message_close_container(req); if (r < 0) return bus_log_create_error(r); r = sd_bus_call(bus, req, 0, error, NULL); if (r < 0 && extended && sd_bus_error_has_name(error, SD_BUS_ERROR_UNKNOWN_METHOD)) { sd_bus_error_free(error); return call_dns(bus, dns, locator, error, false); } return r; } static int verb_dns(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_DNS); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_DNS, NULL); r = call_dns(bus, argv + 2, bus_resolve_mgr, &error, true); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = call_dns(bus, argv + 2, bus_network_mgr, &error, true); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set DNS configuration: %s", bus_error_message(&error, r)); } return 0; } static int call_domain(sd_bus *bus, char **domain, const BusLocator *locator, sd_bus_error *error) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL; int r; r = bus_message_new_method_call(bus, &req, locator, "SetLinkDomains"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "i", arg_ifindex); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(req, 'a', "(sb)"); if (r < 0) return bus_log_create_error(r); /* If only argument is the empty string, then call SetLinkDomains() with an * empty list, which will clear the list of domains for an interface. */ if (!strv_equal(domain, STRV_MAKE(""))) STRV_FOREACH(p, domain) { const char *n; n = **p == '~' ? *p + 1 : *p; r = dns_name_is_valid(n); if (r < 0) return log_error_errno(r, "Failed to validate specified domain %s: %m", n); if (r == 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Domain not valid: %s", n); r = sd_bus_message_append(req, "(sb)", n, **p == '~'); if (r < 0) return bus_log_create_error(r); } r = sd_bus_message_close_container(req); if (r < 0) return bus_log_create_error(r); return sd_bus_call(bus, req, 0, error, NULL); } static int verb_domain(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_DOMAIN); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_DOMAIN, NULL); r = call_domain(bus, argv + 2, bus_resolve_mgr, &error); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = call_domain(bus, argv + 2, bus_network_mgr, &error); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set domain configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_default_route(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r, b; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_DEFAULT_ROUTE); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_DEFAULT_ROUTE, NULL); b = parse_boolean(argv[2]); if (b < 0) return log_error_errno(b, "Failed to parse boolean argument: %s", argv[2]); r = bus_call_method(bus, bus_resolve_mgr, "SetLinkDefaultRoute", &error, NULL, "ib", arg_ifindex, b); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = bus_call_method(bus, bus_network_mgr, "SetLinkDefaultRoute", &error, NULL, "ib", arg_ifindex, b); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set default route configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_llmnr(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *global_llmnr_support_str = NULL; ResolveSupport global_llmnr_support, llmnr_support; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_LLMNR); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_LLMNR, NULL); llmnr_support = resolve_support_from_string(argv[2]); if (llmnr_support < 0) return log_error_errno(llmnr_support, "Invalid LLMNR setting: %s", argv[2]); r = bus_get_property_string(bus, bus_resolve_mgr, "LLMNR", &error, &global_llmnr_support_str); if (r < 0) return log_error_errno(r, "Failed to get the global LLMNR support state: %s", bus_error_message(&error, r)); global_llmnr_support = resolve_support_from_string(global_llmnr_support_str); if (global_llmnr_support < 0) return log_error_errno(global_llmnr_support, "Received invalid global LLMNR setting: %s", global_llmnr_support_str); if (global_llmnr_support < llmnr_support) log_warning("Setting LLMNR support level \"%s\" for \"%s\", but the global support level is \"%s\".", argv[2], arg_ifname, global_llmnr_support_str); r = bus_call_method(bus, bus_resolve_mgr, "SetLinkLLMNR", &error, NULL, "is", arg_ifindex, argv[2]); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = bus_call_method(bus, bus_network_mgr, "SetLinkLLMNR", &error, NULL, "is", arg_ifindex, argv[2]); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set LLMNR configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_mdns(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *global_mdns_support_str = NULL; ResolveSupport global_mdns_support, mdns_support; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_MDNS); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_MDNS, NULL); mdns_support = resolve_support_from_string(argv[2]); if (mdns_support < 0) return log_error_errno(mdns_support, "Invalid mDNS setting: %s", argv[2]); r = bus_get_property_string(bus, bus_resolve_mgr, "MulticastDNS", &error, &global_mdns_support_str); if (r < 0) return log_error_errno(r, "Failed to get the global mDNS support state: %s", bus_error_message(&error, r)); global_mdns_support = resolve_support_from_string(global_mdns_support_str); if (global_mdns_support < 0) return log_error_errno(global_mdns_support, "Received invalid global mDNS setting: %s", global_mdns_support_str); if (global_mdns_support < mdns_support) log_warning("Setting mDNS support level \"%s\" for \"%s\", but the global support level is \"%s\".", argv[2], arg_ifname, global_mdns_support_str); r = bus_call_method(bus, bus_resolve_mgr, "SetLinkMulticastDNS", &error, NULL, "is", arg_ifindex, argv[2]); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = bus_call_method( bus, bus_network_mgr, "SetLinkMulticastDNS", &error, NULL, "is", arg_ifindex, argv[2]); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set MulticastDNS configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_dns_over_tls(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_PRIVATE); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_PRIVATE, NULL); r = bus_call_method(bus, bus_resolve_mgr, "SetLinkDNSOverTLS", &error, NULL, "is", arg_ifindex, argv[2]); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = bus_call_method( bus, bus_network_mgr, "SetLinkDNSOverTLS", &error, NULL, "is", arg_ifindex, argv[2]); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set DNSOverTLS configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_dnssec(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_DNSSEC); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_DNSSEC, NULL); r = bus_call_method(bus, bus_resolve_mgr, "SetLinkDNSSEC", &error, NULL, "is", arg_ifindex, argv[2]); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = bus_call_method(bus, bus_network_mgr, "SetLinkDNSSEC", &error, NULL, "is", arg_ifindex, argv[2]); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set DNSSEC configuration: %s", bus_error_message(&error, r)); } return 0; } static int call_nta(sd_bus *bus, char **nta, const BusLocator *locator, sd_bus_error *error) { _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL; int r; r = bus_message_new_method_call(bus, &req, locator, "SetLinkDNSSECNegativeTrustAnchors"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(req, "i", arg_ifindex); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_strv(req, nta); if (r < 0) return bus_log_create_error(r); return sd_bus_call(bus, req, 0, error, NULL); } static int verb_nta(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; bool clear; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return status_all(bus, STATUS_NTA); if (argc < 3) return status_ifindex(bus, arg_ifindex, NULL, STATUS_NTA, NULL); /* If only argument is the empty string, then call SetLinkDNSSECNegativeTrustAnchors() * with an empty list, which will clear the list of domains for an interface. */ clear = strv_equal(argv + 2, STRV_MAKE("")); if (!clear) STRV_FOREACH(p, argv + 2) { r = dns_name_is_valid(*p); if (r < 0) return log_error_errno(r, "Failed to validate specified domain %s: %m", *p); if (r == 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Domain not valid: %s", *p); } r = call_nta(bus, clear ? NULL : argv + 2, bus_resolve_mgr, &error); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = call_nta(bus, clear ? NULL : argv + 2, bus_network_mgr, &error); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to set DNSSEC NTA configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_revert_link(int argc, char **argv, void *userdata) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; sd_bus *bus = ASSERT_PTR(userdata); int r; if (argc >= 2) { r = ifname_mangle(argv[1]); if (r < 0) return r; } if (arg_ifindex <= 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Interface argument required."); r = bus_call_method(bus, bus_resolve_mgr, "RevertLink", &error, NULL, "i", arg_ifindex); if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) { sd_bus_error_free(&error); r = bus_call_method(bus, bus_network_mgr, "RevertLinkDNS", &error, NULL, "i", arg_ifindex); } if (r < 0) { if (arg_ifindex_permissive && sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK)) return 0; return log_error_errno(r, "Failed to revert interface configuration: %s", bus_error_message(&error, r)); } return 0; } static int verb_log_level(int argc, char *argv[], void *userdata) { sd_bus *bus = ASSERT_PTR(userdata); assert(IN_SET(argc, 1, 2)); return verb_log_control_common(bus, "org.freedesktop.resolve1", argv[0], argc == 2 ? argv[1] : NULL); } static int print_question(char prefix, const char *color, JsonVariant *question) { JsonVariant *q = NULL; int r; assert(color); JSON_VARIANT_ARRAY_FOREACH(q, question) { _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; char buf[DNS_RESOURCE_KEY_STRING_MAX]; r = dns_resource_key_from_json(q, &key); if (r < 0) { log_warning_errno(r, "Received monitor message with invalid question key, ignoring: %m"); continue; } printf("%s%s %c%s: %s\n", color, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), prefix, ansi_normal(), dns_resource_key_to_string(key, buf, sizeof(buf))); } return 0; } static int print_answer(JsonVariant *answer) { JsonVariant *a; int r; JSON_VARIANT_ARRAY_FOREACH(a, answer) { _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; _cleanup_free_ void *d = NULL; JsonVariant *jraw; const char *s; size_t l; jraw = json_variant_by_key(a, "raw"); if (!jraw) { log_warning("Received monitor answer lacking valid raw data, ignoring."); continue; } r = json_variant_unbase64(jraw, &d, &l); if (r < 0) { log_warning_errno(r, "Failed to undo base64 encoding of monitor answer raw data, ignoring."); continue; } r = dns_resource_record_new_from_raw(&rr, d, l); if (r < 0) { log_warning_errno(r, "Failed to parse monitor answer RR, ignoring: %m"); continue; } s = dns_resource_record_to_string(rr); if (!s) return log_oom(); printf("%s%s A%s: %s\n", ansi_highlight_yellow(), special_glyph(SPECIAL_GLYPH_ARROW_LEFT), ansi_normal(), s); } return 0; } static void monitor_query_dump(JsonVariant *v) { _cleanup_(json_variant_unrefp) JsonVariant *question = NULL, *answer = NULL, *collected_questions = NULL; int rcode = -1, error = 0; const char *state = NULL; assert(v); JsonDispatch dispatch_table[] = { { "question", JSON_VARIANT_ARRAY, json_dispatch_variant, PTR_TO_SIZE(&question), JSON_MANDATORY }, { "answer", JSON_VARIANT_ARRAY, json_dispatch_variant, PTR_TO_SIZE(&answer), 0 }, { "collectedQuestions", JSON_VARIANT_ARRAY, json_dispatch_variant, PTR_TO_SIZE(&collected_questions), 0 }, { "state", JSON_VARIANT_STRING, json_dispatch_const_string, PTR_TO_SIZE(&state), JSON_MANDATORY }, { "rcode", _JSON_VARIANT_TYPE_INVALID, json_dispatch_int, PTR_TO_SIZE(&rcode), 0 }, { "errno", _JSON_VARIANT_TYPE_INVALID, json_dispatch_int, PTR_TO_SIZE(&error), 0 }, {} }; if (json_dispatch(v, dispatch_table, JSON_LOG|JSON_ALLOW_EXTENSIONS, NULL) < 0) return; /* First show the current question */ print_question('Q', ansi_highlight_cyan(), question); /* And then show the questions that led to this one in case this was a CNAME chain */ print_question('C', ansi_highlight_grey(), collected_questions); printf("%s%s S%s: %s\n", streq_ptr(state, "success") ? ansi_highlight_green() : ansi_highlight_red(), special_glyph(SPECIAL_GLYPH_ARROW_LEFT), ansi_normal(), strna(streq_ptr(state, "errno") ? errno_to_name(error) : streq_ptr(state, "rcode-failure") ? dns_rcode_to_string(rcode) : state)); print_answer(answer); } static int monitor_reply( Varlink *link, JsonVariant *parameters, const char *error_id, VarlinkReplyFlags flags, void *userdata) { assert(link); if (error_id) { bool disconnect; disconnect = streq(error_id, VARLINK_ERROR_DISCONNECTED); if (disconnect) log_info("Disconnected."); else log_error("Varlink error: %s", error_id); (void) sd_event_exit(ASSERT_PTR(varlink_get_event(link)), disconnect ? EXIT_SUCCESS : EXIT_FAILURE); return 0; } if (json_variant_by_key(parameters, "ready")) { /* The first message coming in will just indicate that we are now subscribed. We let our * caller know if they asked for it. Once the caller sees this they should know that we are * not going to miss any queries anymore. */ (void) sd_notify(/* unset_environment=false */ false, "READY=1"); return 0; } if (arg_json_format_flags & JSON_FORMAT_OFF) { monitor_query_dump(parameters); printf("\n"); } else json_variant_dump(parameters, arg_json_format_flags, NULL, NULL); fflush(stdout); return 0; } static int verb_monitor(int argc, char *argv[], void *userdata) { _cleanup_(sd_event_unrefp) sd_event *event = NULL; _cleanup_(varlink_unrefp) Varlink *vl = NULL; int r, c; r = sd_event_default(&event); if (r < 0) return log_error_errno(r, "Failed to get event loop: %m"); r = sd_event_set_signal_exit(event, true); if (r < 0) return log_error_errno(r, "Failed to enable exit on SIGINT/SIGTERM: %m"); r = varlink_connect_address(&vl, "/run/systemd/resolve/io.systemd.Resolve.Monitor"); if (r < 0) return log_error_errno(r, "Failed to connect to query monitoring service /run/systemd/resolve/io.systemd.Resolve.Monitor: %m"); r = varlink_set_relative_timeout(vl, USEC_INFINITY); /* We want the monitor to run basically forever */ if (r < 0) return log_error_errno(r, "Failed to set varlink time-out: %m"); r = varlink_attach_event(vl, event, SD_EVENT_PRIORITY_NORMAL); if (r < 0) return log_error_errno(r, "Failed to attach varlink connection to event loop: %m"); r = varlink_bind_reply(vl, monitor_reply); if (r < 0) return log_error_errno(r, "Failed to bind reply callback to varlink connection: %m"); r = varlink_observe(vl, "io.systemd.Resolve.Monitor.SubscribeQueryResults", NULL); if (r < 0) return log_error_errno(r, "Failed to issue SubscribeQueryResults() varlink call: %m"); r = sd_event_loop(event); if (r < 0) return log_error_errno(r, "Failed to run event loop: %m"); r = sd_event_get_exit_code(event, &c); if (r < 0) return log_error_errno(r, "Failed to get exit code: %m"); return c; } static int dump_cache_item(JsonVariant *item) { struct item_info { JsonVariant *key; JsonVariant *rrs; const char *type; uint64_t until; } item_info = {}; static const JsonDispatch dispatch_table[] = { { "key", JSON_VARIANT_OBJECT, json_dispatch_variant_noref, offsetof(struct item_info, key), JSON_MANDATORY }, { "rrs", JSON_VARIANT_ARRAY, json_dispatch_variant_noref, offsetof(struct item_info, rrs), 0 }, { "type", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct item_info, type), 0 }, { "until", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct item_info, until), 0 }, {}, }; _cleanup_(dns_resource_key_unrefp) DnsResourceKey *k = NULL; int r, c = 0; r = json_dispatch(item, dispatch_table, JSON_LOG|JSON_ALLOW_EXTENSIONS, &item_info); if (r < 0) return r; r = dns_resource_key_from_json(item_info.key, &k); if (r < 0) return log_error_errno(r, "Failed to turn JSON data to resource key: %m"); if (item_info.type) printf("%s %s%s%s\n", DNS_RESOURCE_KEY_TO_STRING(k), ansi_highlight_red(), item_info.type, ansi_normal()); else { JsonVariant *i; JSON_VARIANT_ARRAY_FOREACH(i, item_info.rrs) { _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; _cleanup_free_ void *data = NULL; JsonVariant *raw; size_t size; raw = json_variant_by_key(i, "raw"); if (!raw) return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "raw field missing from RR JSON data."); r = json_variant_unbase64(raw, &data, &size); if (r < 0) return log_error_errno(r, "Unable to decode raw RR JSON data: %m"); r = dns_resource_record_new_from_raw(&rr, data, size); if (r < 0) return log_error_errno(r, "Failed to parse DNS data: %m"); printf("%s\n", dns_resource_record_to_string(rr)); c++; } } return c; } static int dump_cache_scope(JsonVariant *scope) { struct scope_info { const char *protocol; int family; int ifindex; const char *ifname; JsonVariant *cache; } scope_info = { .family = AF_UNSPEC, }; JsonVariant *i; int r, c = 0; static const JsonDispatch dispatch_table[] = { { "protocol", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct scope_info, protocol), JSON_MANDATORY }, { "family", _JSON_VARIANT_TYPE_INVALID, json_dispatch_int, offsetof(struct scope_info, family), 0 }, { "ifindex", _JSON_VARIANT_TYPE_INVALID, json_dispatch_int, offsetof(struct scope_info, ifindex), 0 }, { "ifname", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct scope_info, ifname), 0 }, { "cache", JSON_VARIANT_ARRAY, json_dispatch_variant_noref, offsetof(struct scope_info, cache), JSON_MANDATORY }, {}, }; r = json_dispatch(scope, dispatch_table, JSON_LOG|JSON_ALLOW_EXTENSIONS, &scope_info); if (r < 0) return r; printf("%sScope protocol=%s", ansi_underline(), scope_info.protocol); if (scope_info.family != AF_UNSPEC) printf(" family=%s", af_to_name(scope_info.family)); if (scope_info.ifindex > 0) printf(" ifindex=%i", scope_info.ifindex); if (scope_info.ifname) printf(" ifname=%s", scope_info.ifname); printf("%s\n", ansi_normal()); JSON_VARIANT_ARRAY_FOREACH(i, scope_info.cache) { r = dump_cache_item(i); if (r < 0) return r; c += r; } if (c == 0) printf("%sNo entries.%s\n\n", ansi_grey(), ansi_normal()); else printf("\n"); return 0; } static int verb_show_cache(int argc, char *argv[], void *userdata) { JsonVariant *reply = NULL, *d = NULL; _cleanup_(varlink_unrefp) Varlink *vl = NULL; int r; r = varlink_connect_address(&vl, "/run/systemd/resolve/io.systemd.Resolve.Monitor"); if (r < 0) return log_error_errno(r, "Failed to connect to query monitoring service /run/systemd/resolve/io.systemd.Resolve.Monitor: %m"); r = varlink_call(vl, "io.systemd.Resolve.Monitor.DumpCache", NULL, &reply, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to issue DumpCache() varlink call: %m"); d = json_variant_by_key(reply, "dump"); if (!d) return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "DumpCache() response is missing 'dump' key."); if (!json_variant_is_array(d)) return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "DumpCache() response 'dump' field not an array"); if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) { JsonVariant *i; JSON_VARIANT_ARRAY_FOREACH(i, d) { r = dump_cache_scope(i); if (r < 0) return r; } return 0; } return json_variant_dump(d, arg_json_format_flags, NULL, NULL); } static int dump_server_state(JsonVariant *server) { _cleanup_(table_unrefp) Table *table = NULL; TableCell *cell; struct server_state { const char *server_name; const char *type; const char *ifname; int ifindex; const char *verified_feature_level; const char *possible_feature_level; const char *dnssec_mode; bool dnssec_supported; size_t received_udp_fragment_max; uint64_t n_failed_udp; uint64_t n_failed_tcp; bool packet_truncated; bool packet_bad_opt; bool packet_rrsig_missing; bool packet_invalid; bool packet_do_off; } server_state = { .ifindex = -1, }; int r; static const JsonDispatch dispatch_table[] = { { "Server", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct server_state, server_name), JSON_MANDATORY }, { "Type", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct server_state, type), JSON_MANDATORY }, { "Interface", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct server_state, ifname), 0 }, { "InterfaceIndex", _JSON_VARIANT_TYPE_INVALID, json_dispatch_int, offsetof(struct server_state, ifindex), 0 }, { "VerifiedFeatureLevel", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct server_state, verified_feature_level), 0 }, { "PossibleFeatureLevel", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct server_state, possible_feature_level), 0 }, { "DNSSECMode", JSON_VARIANT_STRING, json_dispatch_const_string, offsetof(struct server_state, dnssec_mode), JSON_MANDATORY }, { "DNSSECSupported", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(struct server_state, dnssec_supported), JSON_MANDATORY }, { "ReceivedUDPFragmentMax", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct server_state, received_udp_fragment_max), JSON_MANDATORY }, { "FailedUDPAttempts", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct server_state, n_failed_udp), JSON_MANDATORY }, { "FailedTCPAttempts", _JSON_VARIANT_TYPE_INVALID, json_dispatch_uint64, offsetof(struct server_state, n_failed_tcp), JSON_MANDATORY }, { "PacketTruncated", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(struct server_state, packet_truncated), JSON_MANDATORY }, { "PacketBadOpt", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(struct server_state, packet_bad_opt), JSON_MANDATORY }, { "PacketRRSIGMissing", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(struct server_state, packet_rrsig_missing), JSON_MANDATORY }, { "PacketInvalid", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(struct server_state, packet_invalid), JSON_MANDATORY }, { "PacketDoOff", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(struct server_state, packet_do_off), JSON_MANDATORY }, {}, }; r = json_dispatch(server, dispatch_table, JSON_LOG|JSON_ALLOW_EXTENSIONS, &server_state); if (r < 0) return r; table = table_new_vertical(); if (!table) return log_oom(); assert_se(cell = table_get_cell(table, 0, 0)); (void) table_set_ellipsize_percent(table, cell, 100); (void) table_set_align_percent(table, cell, 0); r = table_add_cell_stringf(table, NULL, "Server: %s", server_state.server_name); if (r < 0) return table_log_add_error(r); r = table_add_many(table, TABLE_EMPTY, TABLE_FIELD, "Type", TABLE_SET_ALIGN_PERCENT, 100, TABLE_STRING, server_state.type); if (r < 0) return table_log_add_error(r); if (server_state.ifname) { r = table_add_many(table, TABLE_FIELD, "Interface", TABLE_STRING, server_state.ifname); if (r < 0) return table_log_add_error(r); } if (server_state.ifindex >= 0) { r = table_add_many(table, TABLE_FIELD, "Interface Index", TABLE_INT, server_state.ifindex); if (r < 0) return table_log_add_error(r); } if (server_state.verified_feature_level) { r = table_add_many(table, TABLE_FIELD, "Verified feature level", TABLE_STRING, server_state.verified_feature_level); if (r < 0) return table_log_add_error(r); } if (server_state.possible_feature_level) { r = table_add_many(table, TABLE_FIELD, "Possible feature level", TABLE_STRING, server_state.possible_feature_level); if (r < 0) return table_log_add_error(r); } r = table_add_many(table, TABLE_FIELD, "DNSSEC Mode", TABLE_STRING, server_state.dnssec_mode, TABLE_FIELD, "DNSSEC Supported", TABLE_STRING, yes_no(server_state.dnssec_supported), TABLE_FIELD, "Maximum UDP fragment size received", TABLE_UINT64, server_state.received_udp_fragment_max, TABLE_FIELD, "Failed UDP attempts", TABLE_UINT64, server_state.n_failed_udp, TABLE_FIELD, "Failed TCP attempts", TABLE_UINT64, server_state.n_failed_tcp, TABLE_FIELD, "Seen truncated packet", TABLE_STRING, yes_no(server_state.packet_truncated), TABLE_FIELD, "Seen OPT RR getting lost", TABLE_STRING, yes_no(server_state.packet_bad_opt), TABLE_FIELD, "Seen RRSIG RR missing", TABLE_STRING, yes_no(server_state.packet_rrsig_missing), TABLE_FIELD, "Seen invalid packet", TABLE_STRING, yes_no(server_state.packet_invalid), TABLE_FIELD, "Server dropped DO flag", TABLE_STRING, yes_no(server_state.packet_do_off), TABLE_SET_ALIGN_PERCENT, 0, TABLE_EMPTY, TABLE_EMPTY); if (r < 0) return table_log_add_error(r); r = table_print(table, NULL); if (r < 0) return table_log_print_error(r); return 0; } static int verb_show_server_state(int argc, char *argv[], void *userdata) { JsonVariant *reply = NULL, *d = NULL; _cleanup_(varlink_unrefp) Varlink *vl = NULL; int r; r = varlink_connect_address(&vl, "/run/systemd/resolve/io.systemd.Resolve.Monitor"); if (r < 0) return log_error_errno(r, "Failed to connect to query monitoring service /run/systemd/resolve/io.systemd.Resolve.Monitor: %m"); r = varlink_call(vl, "io.systemd.Resolve.Monitor.DumpServerState", NULL, &reply, NULL, 0); if (r < 0) return log_error_errno(r, "Failed to issue DumpServerState() varlink call: %m"); d = json_variant_by_key(reply, "dump"); if (!d) return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "DumpCache() response is missing 'dump' key."); if (!json_variant_is_array(d)) return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), "DumpCache() response 'dump' field not an array"); if (FLAGS_SET(arg_json_format_flags, JSON_FORMAT_OFF)) { JsonVariant *i; JSON_VARIANT_ARRAY_FOREACH(i, d) { r = dump_server_state(i); if (r < 0) return r; } return 0; } return json_variant_dump(d, arg_json_format_flags, NULL, NULL); } static void help_protocol_types(void) { if (arg_legend) puts("Known protocol types:"); puts("dns\n" "llmnr\n" "llmnr-ipv4\n" "llmnr-ipv6\n" "mdns\n" "mdns-ipv4\n" "mdns-ipv6"); } static void help_dns_types(void) { if (arg_legend) puts("Known DNS RR types:"); DUMP_STRING_TABLE(dns_type, int, _DNS_TYPE_MAX); } static void help_dns_classes(void) { if (arg_legend) puts("Known DNS RR classes:"); DUMP_STRING_TABLE(dns_class, int, _DNS_CLASS_MAX); } static int compat_help(void) { _cleanup_free_ char *link = NULL; int r; r = terminal_urlify_man("resolvectl", "1", &link); if (r < 0) return log_oom(); printf("%1$s [OPTIONS...] HOSTNAME|ADDRESS...\n" "%1$s [OPTIONS...] --service [[NAME] TYPE] DOMAIN\n" "%1$s [OPTIONS...] --openpgp EMAIL@DOMAIN...\n" "%1$s [OPTIONS...] --statistics\n" "%1$s [OPTIONS...] --reset-statistics\n" "\n" "%2$sResolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%3$s\n\n" " -h --help Show this help\n" " --version Show package version\n" " --no-pager Do not pipe output into a pager\n" " -4 Resolve IPv4 addresses\n" " -6 Resolve IPv6 addresses\n" " -i --interface=INTERFACE Look on interface\n" " -p --protocol=PROTO|help Look via protocol\n" " -t --type=TYPE|help Query RR with DNS type\n" " -c --class=CLASS|help Query RR with DNS class\n" " --service Resolve service (SRV)\n" " --service-address=BOOL Resolve address for services (default: yes)\n" " --service-txt=BOOL Resolve TXT records for services (default: yes)\n" " --openpgp Query OpenPGP public key\n" " --tlsa Query TLS public key\n" " --cname=BOOL Follow CNAME redirects (default: yes)\n" " --search=BOOL Use search domains for single-label names\n" " (default: yes)\n" " --raw[=payload|packet] Dump the answer as binary data\n" " --legend=BOOL Print headers and additional info (default: yes)\n" " --statistics Show resolver statistics\n" " --reset-statistics Reset resolver statistics\n" " --status Show link and server status\n" " --flush-caches Flush all local DNS caches\n" " --reset-server-features\n" " Forget learnt DNS server feature levels\n" " --set-dns=SERVER Set per-interface DNS server address\n" " --set-domain=DOMAIN Set per-interface search domain\n" " --set-llmnr=MODE Set per-interface LLMNR mode\n" " --set-mdns=MODE Set per-interface MulticastDNS mode\n" " --set-dnsovertls=MODE Set per-interface DNS-over-TLS mode\n" " --set-dnssec=MODE Set per-interface DNSSEC mode\n" " --set-nta=DOMAIN Set per-interface DNSSEC NTA\n" " --revert Revert per-interface configuration\n" "\nSee the %4$s for details.\n", program_invocation_short_name, ansi_highlight(), ansi_normal(), link); return 0; } static int native_help(void) { _cleanup_free_ char *link = NULL; int r; r = terminal_urlify_man("resolvectl", "1", &link); if (r < 0) return log_oom(); printf("%s [OPTIONS...] COMMAND ...\n" "\n" "%sSend control commands to the network name resolution manager, or%s\n" "%sresolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%s\n" "\nCommands:\n" " query HOSTNAME|ADDRESS... Resolve domain names, IPv4 and IPv6 addresses\n" " service [[NAME] TYPE] DOMAIN Resolve service (SRV)\n" " openpgp EMAIL@DOMAIN... Query OpenPGP public key\n" " tlsa DOMAIN[:PORT]... Query TLS public key\n" " status [LINK...] Show link and server status\n" " statistics Show resolver statistics\n" " reset-statistics Reset resolver statistics\n" " flush-caches Flush all local DNS caches\n" " reset-server-features Forget learnt DNS server feature levels\n" " monitor Monitor DNS queries\n" " show-cache Show cache contents\n" " show-server-state Show servers state\n" " dns [LINK [SERVER...]] Get/set per-interface DNS server address\n" " domain [LINK [DOMAIN...]] Get/set per-interface search domain\n" " default-route [LINK [BOOL]] Get/set per-interface default route flag\n" " llmnr [LINK [MODE]] Get/set per-interface LLMNR mode\n" " mdns [LINK [MODE]] Get/set per-interface MulticastDNS mode\n" " dnsovertls [LINK [MODE]] Get/set per-interface DNS-over-TLS mode\n" " dnssec [LINK [MODE]] Get/set per-interface DNSSEC mode\n" " nta [LINK [DOMAIN...]] Get/set per-interface DNSSEC NTA\n" " revert LINK Revert per-interface configuration\n" " log-level [LEVEL] Get/set logging threshold for systemd-resolved\n" "\nOptions:\n" " -h --help Show this help\n" " --version Show package version\n" " --no-pager Do not pipe output into a pager\n" " -4 Resolve IPv4 addresses\n" " -6 Resolve IPv6 addresses\n" " -i --interface=INTERFACE Look on interface\n" " -p --protocol=PROTO|help Look via protocol\n" " -t --type=TYPE|help Query RR with DNS type\n" " -c --class=CLASS|help Query RR with DNS class\n" " --service-address=BOOL Resolve address for services (default: yes)\n" " --service-txt=BOOL Resolve TXT records for services (default: yes)\n" " --cname=BOOL Follow CNAME redirects (default: yes)\n" " --validate=BOOL Allow DNSSEC validation (default: yes)\n" " --synthesize=BOOL Allow synthetic response (default: yes)\n" " --cache=BOOL Allow response from cache (default: yes)\n" " --stale-data=BOOL Allow response from cache with stale data (default: yes)\n" " --zone=BOOL Allow response from locally registered mDNS/LLMNR\n" " records (default: yes)\n" " --trust-anchor=BOOL Allow response from local trust anchor (default:\n" " yes)\n" " --network=BOOL Allow response from network (default: yes)\n" " --search=BOOL Use search domains for single-label names (default:\n" " yes)\n" " --raw[=payload|packet] Dump the answer as binary data\n" " --legend=BOOL Print headers and additional info (default: yes)\n" " --json=MODE Output as JSON\n" " -j Same as --json=pretty on tty, --json=short\n" " otherwise\n" "\nSee the %s for details.\n", program_invocation_short_name, ansi_highlight(), ansi_normal(), ansi_highlight(), ansi_normal(), link); return 0; } static int verb_help(int argc, char **argv, void *userdata) { return native_help(); } static int compat_parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_LEGEND, ARG_SERVICE, ARG_CNAME, ARG_SERVICE_ADDRESS, ARG_SERVICE_TXT, ARG_OPENPGP, ARG_TLSA, ARG_RAW, ARG_SEARCH, ARG_STATISTICS, ARG_RESET_STATISTICS, ARG_STATUS, ARG_FLUSH_CACHES, ARG_RESET_SERVER_FEATURES, ARG_NO_PAGER, ARG_SET_DNS, ARG_SET_DOMAIN, ARG_SET_LLMNR, ARG_SET_MDNS, ARG_SET_PRIVATE, ARG_SET_DNSSEC, ARG_SET_NTA, ARG_REVERT_LINK, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "type", required_argument, NULL, 't' }, { "class", required_argument, NULL, 'c' }, { "legend", required_argument, NULL, ARG_LEGEND }, { "interface", required_argument, NULL, 'i' }, { "protocol", required_argument, NULL, 'p' }, { "cname", required_argument, NULL, ARG_CNAME }, { "service", no_argument, NULL, ARG_SERVICE }, { "service-address", required_argument, NULL, ARG_SERVICE_ADDRESS }, { "service-txt", required_argument, NULL, ARG_SERVICE_TXT }, { "openpgp", no_argument, NULL, ARG_OPENPGP }, { "tlsa", optional_argument, NULL, ARG_TLSA }, { "raw", optional_argument, NULL, ARG_RAW }, { "search", required_argument, NULL, ARG_SEARCH }, { "statistics", no_argument, NULL, ARG_STATISTICS, }, { "reset-statistics", no_argument, NULL, ARG_RESET_STATISTICS }, { "status", no_argument, NULL, ARG_STATUS }, { "flush-caches", no_argument, NULL, ARG_FLUSH_CACHES }, { "reset-server-features", no_argument, NULL, ARG_RESET_SERVER_FEATURES }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "set-dns", required_argument, NULL, ARG_SET_DNS }, { "set-domain", required_argument, NULL, ARG_SET_DOMAIN }, { "set-llmnr", required_argument, NULL, ARG_SET_LLMNR }, { "set-mdns", required_argument, NULL, ARG_SET_MDNS }, { "set-dnsovertls", required_argument, NULL, ARG_SET_PRIVATE }, { "set-dnssec", required_argument, NULL, ARG_SET_DNSSEC }, { "set-nta", required_argument, NULL, ARG_SET_NTA }, { "revert", no_argument, NULL, ARG_REVERT_LINK }, {} }; int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "h46i:t:c:p:", options, NULL)) >= 0) switch (c) { case 'h': return compat_help(); case ARG_VERSION: return version(); case '4': arg_family = AF_INET; break; case '6': arg_family = AF_INET6; break; case 'i': r = ifname_mangle(optarg); if (r < 0) return r; break; case 't': if (streq(optarg, "help")) { help_dns_types(); return 0; } r = dns_type_from_string(optarg); if (r < 0) return log_error_errno(r, "Failed to parse RR record type %s: %m", optarg); arg_type = (uint16_t) r; assert((int) arg_type == r); arg_mode = MODE_RESOLVE_RECORD; break; case 'c': if (streq(optarg, "help")) { help_dns_classes(); return 0; } r = dns_class_from_string(optarg); if (r < 0) return log_error_errno(r, "Failed to parse RR record class %s: %m", optarg); arg_class = (uint16_t) r; assert((int) arg_class == r); break; case ARG_LEGEND: r = parse_boolean_argument("--legend=", optarg, &arg_legend); if (r < 0) return r; break; case 'p': if (streq(optarg, "help")) { help_protocol_types(); return 0; } else if (streq(optarg, "dns")) arg_flags |= SD_RESOLVED_DNS; else if (streq(optarg, "llmnr")) arg_flags |= SD_RESOLVED_LLMNR; else if (streq(optarg, "llmnr-ipv4")) arg_flags |= SD_RESOLVED_LLMNR_IPV4; else if (streq(optarg, "llmnr-ipv6")) arg_flags |= SD_RESOLVED_LLMNR_IPV6; else if (streq(optarg, "mdns")) arg_flags |= SD_RESOLVED_MDNS; else if (streq(optarg, "mdns-ipv4")) arg_flags |= SD_RESOLVED_MDNS_IPV4; else if (streq(optarg, "mdns-ipv6")) arg_flags |= SD_RESOLVED_MDNS_IPV6; else return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown protocol specifier: %s", optarg); break; case ARG_SERVICE: arg_mode = MODE_RESOLVE_SERVICE; break; case ARG_OPENPGP: arg_mode = MODE_RESOLVE_OPENPGP; break; case ARG_TLSA: arg_mode = MODE_RESOLVE_TLSA; if (!optarg || service_family_is_valid(optarg)) arg_service_family = optarg; else return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown service family \"%s\".", optarg); break; case ARG_RAW: if (on_tty()) return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Refusing to write binary data to tty."); if (optarg == NULL || streq(optarg, "payload")) arg_raw = RAW_PAYLOAD; else if (streq(optarg, "packet")) arg_raw = RAW_PACKET; else return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown --raw specifier \"%s\".", optarg); arg_legend = false; break; case ARG_CNAME: r = parse_boolean_argument("--cname=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0); break; case ARG_SERVICE_ADDRESS: r = parse_boolean_argument("--service-address=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0); break; case ARG_SERVICE_TXT: r = parse_boolean_argument("--service-txt=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0); break; case ARG_SEARCH: r = parse_boolean_argument("--search=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0); break; case ARG_STATISTICS: arg_mode = MODE_STATISTICS; break; case ARG_RESET_STATISTICS: arg_mode = MODE_RESET_STATISTICS; break; case ARG_FLUSH_CACHES: arg_mode = MODE_FLUSH_CACHES; break; case ARG_RESET_SERVER_FEATURES: arg_mode = MODE_RESET_SERVER_FEATURES; break; case ARG_STATUS: arg_mode = MODE_STATUS; break; case ARG_NO_PAGER: arg_pager_flags |= PAGER_DISABLE; break; case ARG_SET_DNS: r = strv_extend(&arg_set_dns, optarg); if (r < 0) return log_oom(); arg_mode = MODE_SET_LINK; break; case ARG_SET_DOMAIN: r = strv_extend(&arg_set_domain, optarg); if (r < 0) return log_oom(); arg_mode = MODE_SET_LINK; break; case ARG_SET_LLMNR: arg_set_llmnr = optarg; arg_mode = MODE_SET_LINK; break; case ARG_SET_MDNS: arg_set_mdns = optarg; arg_mode = MODE_SET_LINK; break; case ARG_SET_PRIVATE: arg_set_dns_over_tls = optarg; arg_mode = MODE_SET_LINK; break; case ARG_SET_DNSSEC: arg_set_dnssec = optarg; arg_mode = MODE_SET_LINK; break; case ARG_SET_NTA: r = strv_extend(&arg_set_nta, optarg); if (r < 0) return log_oom(); arg_mode = MODE_SET_LINK; break; case ARG_REVERT_LINK: arg_mode = MODE_REVERT_LINK; break; case '?': return -EINVAL; default: assert_not_reached(); } if (arg_type == 0 && arg_class != 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--class= may only be used in conjunction with --type=."); if (arg_type != 0 && arg_mode == MODE_RESOLVE_SERVICE) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--service and --type= may not be combined."); if (arg_type != 0 && arg_class == 0) arg_class = DNS_CLASS_IN; if (arg_class != 0 && arg_type == 0) arg_type = DNS_TYPE_A; if (IN_SET(arg_mode, MODE_SET_LINK, MODE_REVERT_LINK)) { if (arg_ifindex <= 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--set-dns=, --set-domain=, --set-llmnr=, --set-mdns=, --set-dnsovertls=, --set-dnssec=, --set-nta= and --revert require --interface=."); } return 1 /* work to do */; } static int native_parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_LEGEND, ARG_CNAME, ARG_VALIDATE, ARG_SYNTHESIZE, ARG_CACHE, ARG_ZONE, ARG_TRUST_ANCHOR, ARG_NETWORK, ARG_SERVICE_ADDRESS, ARG_SERVICE_TXT, ARG_RAW, ARG_SEARCH, ARG_NO_PAGER, ARG_JSON, ARG_STALE_DATA }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "type", required_argument, NULL, 't' }, { "class", required_argument, NULL, 'c' }, { "legend", required_argument, NULL, ARG_LEGEND }, { "interface", required_argument, NULL, 'i' }, { "protocol", required_argument, NULL, 'p' }, { "cname", required_argument, NULL, ARG_CNAME }, { "validate", required_argument, NULL, ARG_VALIDATE }, { "synthesize", required_argument, NULL, ARG_SYNTHESIZE }, { "cache", required_argument, NULL, ARG_CACHE }, { "zone", required_argument, NULL, ARG_ZONE }, { "trust-anchor", required_argument, NULL, ARG_TRUST_ANCHOR }, { "network", required_argument, NULL, ARG_NETWORK }, { "service-address", required_argument, NULL, ARG_SERVICE_ADDRESS }, { "service-txt", required_argument, NULL, ARG_SERVICE_TXT }, { "raw", optional_argument, NULL, ARG_RAW }, { "search", required_argument, NULL, ARG_SEARCH }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "json", required_argument, NULL, ARG_JSON }, { "stale-data", required_argument, NULL, ARG_STALE_DATA }, {} }; int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "h46i:t:c:p:j", options, NULL)) >= 0) switch (c) { case 'h': return native_help(); case ARG_VERSION: return version(); case '4': arg_family = AF_INET; break; case '6': arg_family = AF_INET6; break; case 'i': r = ifname_mangle(optarg); if (r < 0) return r; break; case 't': if (streq(optarg, "help")) { help_dns_types(); return 0; } r = dns_type_from_string(optarg); if (r < 0) return log_error_errno(r, "Failed to parse RR record type %s: %m", optarg); arg_type = (uint16_t) r; assert((int) arg_type == r); break; case 'c': if (streq(optarg, "help")) { help_dns_classes(); return 0; } r = dns_class_from_string(optarg); if (r < 0) return log_error_errno(r, "Failed to parse RR record class %s: %m", optarg); arg_class = (uint16_t) r; assert((int) arg_class == r); break; case ARG_LEGEND: r = parse_boolean_argument("--legend=", optarg, &arg_legend); if (r < 0) return r; break; case 'p': if (streq(optarg, "help")) { help_protocol_types(); return 0; } else if (streq(optarg, "dns")) arg_flags |= SD_RESOLVED_DNS; else if (streq(optarg, "llmnr")) arg_flags |= SD_RESOLVED_LLMNR; else if (streq(optarg, "llmnr-ipv4")) arg_flags |= SD_RESOLVED_LLMNR_IPV4; else if (streq(optarg, "llmnr-ipv6")) arg_flags |= SD_RESOLVED_LLMNR_IPV6; else if (streq(optarg, "mdns")) arg_flags |= SD_RESOLVED_MDNS; else if (streq(optarg, "mdns-ipv4")) arg_flags |= SD_RESOLVED_MDNS_IPV4; else if (streq(optarg, "mdns-ipv6")) arg_flags |= SD_RESOLVED_MDNS_IPV6; else return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown protocol specifier: %s", optarg); break; case ARG_RAW: if (on_tty()) return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Refusing to write binary data to tty."); if (optarg == NULL || streq(optarg, "payload")) arg_raw = RAW_PAYLOAD; else if (streq(optarg, "packet")) arg_raw = RAW_PACKET; else return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown --raw specifier \"%s\".", optarg); arg_legend = false; break; case ARG_CNAME: r = parse_boolean_argument("--cname=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0); break; case ARG_VALIDATE: r = parse_boolean_argument("--validate=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_VALIDATE, r == 0); break; case ARG_SYNTHESIZE: r = parse_boolean_argument("--synthesize=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_SYNTHESIZE, r == 0); break; case ARG_CACHE: r = parse_boolean_argument("--cache=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_CACHE, r == 0); break; case ARG_STALE_DATA: r = parse_boolean_argument("--stale-data=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_STALE, r == 0); break; case ARG_ZONE: r = parse_boolean_argument("--zone=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_ZONE, r == 0); break; case ARG_TRUST_ANCHOR: r = parse_boolean_argument("--trust-anchor=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_TRUST_ANCHOR, r == 0); break; case ARG_NETWORK: r = parse_boolean_argument("--network=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_NETWORK, r == 0); break; case ARG_SERVICE_ADDRESS: r = parse_boolean_argument("--service-address=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0); break; case ARG_SERVICE_TXT: r = parse_boolean_argument("--service-txt=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0); break; case ARG_SEARCH: r = parse_boolean_argument("--search=", optarg, NULL); if (r < 0) return r; SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0); break; case ARG_NO_PAGER: arg_pager_flags |= PAGER_DISABLE; break; case ARG_JSON: r = parse_json_argument(optarg, &arg_json_format_flags); if (r <= 0) return r; break; case 'j': arg_json_format_flags = JSON_FORMAT_PRETTY_AUTO|JSON_FORMAT_COLOR_AUTO; break; case '?': return -EINVAL; default: assert_not_reached(); } if (arg_type == 0 && arg_class != 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--class= may only be used in conjunction with --type=."); if (arg_type != 0 && arg_class == 0) arg_class = DNS_CLASS_IN; if (arg_class != 0 && arg_type == 0) arg_type = DNS_TYPE_A; return 1 /* work to do */; } static int native_main(int argc, char *argv[], sd_bus *bus) { static const Verb verbs[] = { { "help", VERB_ANY, VERB_ANY, 0, verb_help }, { "status", VERB_ANY, VERB_ANY, VERB_DEFAULT, verb_status }, { "query", 2, VERB_ANY, 0, verb_query }, { "service", 2, 4, 0, verb_service }, { "openpgp", 2, VERB_ANY, 0, verb_openpgp }, { "tlsa", 2, VERB_ANY, 0, verb_tlsa }, { "statistics", VERB_ANY, 1, 0, show_statistics }, { "reset-statistics", VERB_ANY, 1, 0, reset_statistics }, { "flush-caches", VERB_ANY, 1, 0, flush_caches }, { "reset-server-features", VERB_ANY, 1, 0, reset_server_features }, { "dns", VERB_ANY, VERB_ANY, 0, verb_dns }, { "domain", VERB_ANY, VERB_ANY, 0, verb_domain }, { "default-route", VERB_ANY, 3, 0, verb_default_route }, { "llmnr", VERB_ANY, 3, 0, verb_llmnr }, { "mdns", VERB_ANY, 3, 0, verb_mdns }, { "dnsovertls", VERB_ANY, 3, 0, verb_dns_over_tls }, { "dnssec", VERB_ANY, 3, 0, verb_dnssec }, { "nta", VERB_ANY, VERB_ANY, 0, verb_nta }, { "revert", VERB_ANY, 2, 0, verb_revert_link }, { "log-level", VERB_ANY, 2, 0, verb_log_level }, { "monitor", VERB_ANY, 1, 0, verb_monitor }, { "show-cache", VERB_ANY, 1, 0, verb_show_cache }, { "show-server-state", VERB_ANY, 1, 0, verb_show_server_state}, {} }; return dispatch_verb(argc, argv, verbs, bus); } static int translate(const char *verb, const char *single_arg, size_t num_args, char **args, sd_bus *bus) { char **fake, **p; size_t num; assert(verb); assert(num_args == 0 || args); num = !!single_arg + num_args + 1; p = fake = newa0(char *, num + 1); *p++ = (char *) verb; if (single_arg) *p++ = (char *) single_arg; for (size_t i = 0; i < num_args; i++) *p++ = args[i]; optind = 0; return native_main((int) num, fake, bus); } static int compat_main(int argc, char *argv[], sd_bus *bus) { int r = 0; switch (arg_mode) { case MODE_RESOLVE_HOST: case MODE_RESOLVE_RECORD: return translate("query", NULL, argc - optind, argv + optind, bus); case MODE_RESOLVE_SERVICE: return translate("service", NULL, argc - optind, argv + optind, bus); case MODE_RESOLVE_OPENPGP: return translate("openpgp", NULL, argc - optind, argv + optind, bus); case MODE_RESOLVE_TLSA: return translate("tlsa", arg_service_family, argc - optind, argv + optind, bus); case MODE_STATISTICS: return translate("statistics", NULL, 0, NULL, bus); case MODE_RESET_STATISTICS: return translate("reset-statistics", NULL, 0, NULL, bus); case MODE_FLUSH_CACHES: return translate("flush-caches", NULL, 0, NULL, bus); case MODE_RESET_SERVER_FEATURES: return translate("reset-server-features", NULL, 0, NULL, bus); case MODE_STATUS: return translate("status", NULL, argc - optind, argv + optind, bus); case MODE_SET_LINK: assert(arg_ifname); if (arg_set_dns) { r = translate("dns", arg_ifname, strv_length(arg_set_dns), arg_set_dns, bus); if (r < 0) return r; } if (arg_set_domain) { r = translate("domain", arg_ifname, strv_length(arg_set_domain), arg_set_domain, bus); if (r < 0) return r; } if (arg_set_nta) { r = translate("nta", arg_ifname, strv_length(arg_set_nta), arg_set_nta, bus); if (r < 0) return r; } if (arg_set_llmnr) { r = translate("llmnr", arg_ifname, 1, (char **) &arg_set_llmnr, bus); if (r < 0) return r; } if (arg_set_mdns) { r = translate("mdns", arg_ifname, 1, (char **) &arg_set_mdns, bus); if (r < 0) return r; } if (arg_set_dns_over_tls) { r = translate("dnsovertls", arg_ifname, 1, (char **) &arg_set_dns_over_tls, bus); if (r < 0) return r; } if (arg_set_dnssec) { r = translate("dnssec", arg_ifname, 1, (char **) &arg_set_dnssec, bus); if (r < 0) return r; } return r; case MODE_REVERT_LINK: assert(arg_ifname); return translate("revert", arg_ifname, 0, NULL, bus); case _MODE_INVALID: assert_not_reached(); } return 0; } static int run(int argc, char **argv) { _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; bool compat = false; int r; setlocale(LC_ALL, ""); log_setup(); if (invoked_as(argv, "resolvconf")) { compat = true; r = resolvconf_parse_argv(argc, argv); } else if (invoked_as(argv, "systemd-resolve")) { compat = true; r = compat_parse_argv(argc, argv); } else r = native_parse_argv(argc, argv); if (r <= 0) return r; r = sd_bus_open_system(&bus); if (r < 0) return log_error_errno(r, "sd_bus_open_system: %m"); if (compat) return compat_main(argc, argv, bus); return native_main(argc, argv, bus); } DEFINE_MAIN_FUNCTION(run);