diff options
Diffstat (limited to 'src/resolve/resolvectl.c')
| -rw-r--r-- | src/resolve/resolvectl.c | 3658 |
1 files changed, 3658 insertions, 0 deletions
diff --git a/src/resolve/resolvectl.c b/src/resolve/resolvectl.c new file mode 100644 index 0000000..2217a42 --- /dev/null +++ b/src/resolve/resolvectl.c @@ -0,0 +1,3658 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> +#include <locale.h> +#include <net/if.h> + +#include "sd-bus.h" +#include "sd-netlink.h" + +#include "af-list.h" +#include "alloc-util.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 "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)) + 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_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(table_unrefp) Table *table = NULL; + sd_bus *bus = ASSERT_PTR(userdata); + uint64_t n_current_transactions, n_total_transactions, + cache_size, n_cache_hit, n_cache_miss, + n_dnssec_secure, n_dnssec_insecure, n_dnssec_bogus, n_dnssec_indeterminate; + int r, dnssec_supported; + + r = bus_get_property_trivial(bus, bus_resolve_mgr, "DNSSECSupported", &error, 'b', &dnssec_supported); + if (r < 0) + return log_error_errno(r, "Failed to get DNSSEC supported state: %s", bus_error_message(&error, r)); + + printf("DNSSEC supported by current servers: %s%s%s\n\n", + ansi_highlight(), + yes_no(dnssec_supported), + ansi_normal()); + + r = bus_get_property(bus, bus_resolve_mgr, "TransactionStatistics", &error, &reply, "(tt)"); + if (r < 0) + return log_error_errno(r, "Failed to get transaction statistics: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "(tt)", + &n_current_transactions, + &n_total_transactions); + if (r < 0) + return bus_log_parse_error(r); + + reply = sd_bus_message_unref(reply); + + r = bus_get_property(bus, bus_resolve_mgr, "CacheStatistics", &error, &reply, "(ttt)"); + if (r < 0) + return log_error_errno(r, "Failed to get cache statistics: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "(ttt)", + &cache_size, + &n_cache_hit, + &n_cache_miss); + if (r < 0) + return bus_log_parse_error(r); + + reply = sd_bus_message_unref(reply); + + r = bus_get_property(bus, bus_resolve_mgr, "DNSSECStatistics", &error, &reply, "(tttt)"); + if (r < 0) + return log_error_errno(r, "Failed to get DNSSEC statistics: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "(tttt)", + &n_dnssec_secure, + &n_dnssec_insecure, + &n_dnssec_bogus, + &n_dnssec_indeterminate); + if (r < 0) + return bus_log_parse_error(r); + + table = table_new("key", "value"); + if (!table) + return log_oom(); + + table_set_header(table, false); + + r = table_add_many(table, + TABLE_STRING, "Transactions", + TABLE_SET_COLOR, ansi_highlight(), + TABLE_EMPTY, + TABLE_STRING, "Current Transactions:", + TABLE_SET_ALIGN_PERCENT, 100, + TABLE_UINT64, n_current_transactions, + TABLE_STRING, "Total Transactions:", + TABLE_UINT64, n_total_transactions, + TABLE_EMPTY, TABLE_EMPTY, + TABLE_STRING, "Cache", + TABLE_SET_COLOR, ansi_highlight(), + TABLE_SET_ALIGN_PERCENT, 0, + TABLE_EMPTY, + TABLE_STRING, "Current Cache Size:", + TABLE_SET_ALIGN_PERCENT, 100, + TABLE_UINT64, cache_size, + TABLE_STRING, "Cache Hits:", + TABLE_UINT64, n_cache_hit, + TABLE_STRING, "Cache Misses:", + TABLE_UINT64, n_cache_miss, + TABLE_EMPTY, TABLE_EMPTY, + TABLE_STRING, "DNSSEC Verdicts", + TABLE_SET_COLOR, ansi_highlight(), + TABLE_SET_ALIGN_PERCENT, 0, + TABLE_EMPTY, + TABLE_STRING, "Secure:", + TABLE_SET_ALIGN_PERCENT, 100, + TABLE_UINT64, n_dnssec_secure, + TABLE_STRING, "Insecure:", + TABLE_UINT64, n_dnssec_insecure, + TABLE_STRING, "Bogus:", + TABLE_UINT64, n_dnssec_bogus, + TABLE_STRING, "Indeterminate:", + TABLE_UINT64, n_dnssec_indeterminate); + if (r < 0) + 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) { + _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, "ResetStatistics", &error, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to reset statistics: %s", bus_error_message(&error, r)); + + 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 *prefix, char * const *l) { + int r; + + if (strv_isempty(l)) + return 0; + + r = table_add_many(table, + TABLE_STRING, prefix, + 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("key", "value"); + if (!table) + return log_oom(); + + table_set_header(table, false); + + r = table_add_many(table, + TABLE_STRING, "Current Scopes:", + TABLE_SET_ALIGN_PERCENT, 100); + 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_STRING, "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_STRING, "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, 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, 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("key", "value"); + if (!table) + return log_oom(); + + table_set_header(table, false); + + _cleanup_strv_free_ char **pstatus = global_protocol_status(&global_info); + if (!pstatus) + return log_oom(); + + r = table_add_many(table, + TABLE_STRING, "Protocols:", + TABLE_SET_ALIGN_PERCENT, 100, + 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_STRING, "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_STRING, "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; + 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); + + 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; + 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); + + 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 monitor_rkey_from_json(JsonVariant *v, DnsResourceKey **ret_key) { + _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; + uint16_t type = 0, class = 0; + const char *name = NULL; + int r; + + JsonDispatch dispatch_table[] = { + { "class", JSON_VARIANT_INTEGER, json_dispatch_uint16, PTR_TO_SIZE(&class), JSON_MANDATORY }, + { "type", JSON_VARIANT_INTEGER, json_dispatch_uint16, PTR_TO_SIZE(&type), JSON_MANDATORY }, + { "name", JSON_VARIANT_STRING, json_dispatch_const_string, PTR_TO_SIZE(&name), JSON_MANDATORY }, + {} + }; + + assert(v); + assert(ret_key); + + r = json_dispatch(v, dispatch_table, NULL, 0, NULL); + if (r < 0) + return r; + + key = dns_resource_key_new(class, type, name); + if (!key) + return -ENOMEM; + + *ret_key = TAKE_PTR(key); + return 0; +} + +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 = monitor_rkey_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, r; + 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_INTEGER, json_dispatch_int, PTR_TO_SIZE(&rcode), 0 }, + { "errno", JSON_VARIANT_INTEGER, json_dispatch_int, PTR_TO_SIZE(&error), 0 }, + {} + }; + + r = json_dispatch(v, dispatch_table, NULL, 0, NULL); + if (r < 0) + return (void) log_warning("Received malformed monitor message, ignoring."); + + /* 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 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" + " 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" + " --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, + }; + + 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 }, + {} + }; + + 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_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 }, + {} + }; + + 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); |