diff options
Diffstat (limited to 'src/resolve/resolvectl.c')
| -rw-r--r-- | src/resolve/resolvectl.c | 3163 |
1 files changed, 3163 insertions, 0 deletions
diff --git a/src/resolve/resolvectl.c b/src/resolve/resolvectl.c new file mode 100644 index 0000000..4d533f8 --- /dev/null +++ b/src/resolve/resolvectl.c @@ -0,0 +1,3163 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include <getopt.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-util.h" +#include "dns-domain.h" +#include "escape.h" +#include "gcrypt-util.h" +#include "in-addr-util.h" +#include "main-func.h" +#include "missing_network.h" +#include "netlink-util.h" +#include "pager.h" +#include "parse-util.h" +#include "pretty-print.h" +#include "resolvconf-compat.h" +#include "resolvectl.h" +#include "resolved-def.h" +#include "resolved-dns-packet.h" +#include "string-table.h" +#include "strv.h" +#include "terminal-util.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 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; + +static int parse_ifindex_and_warn(const char *s) { + int ifi; + + assert(s); + + if (parse_ifindex(s, &ifi) < 0) { + ifi = if_nametoindex(s); + if (ifi <= 0) + return log_error_errno(errno, "Unknown interface '%s': %m", s); + } + + return ifi; +} + +int ifname_mangle(const char *s) { + _cleanup_free_ char *iface = NULL; + const char *dot; + int ifi; + + assert(s); + + dot = strchr(s, '.'); + if (dot) { + log_debug("Ignoring protocol specifier '%s'.", dot + 1); + iface = strndup(s, dot - s); + + } else + iface = strdup(s); + if (!iface) + return log_oom(); + + if (parse_ifindex(iface, &ifi) < 0) { + ifi = if_nametoindex(iface); + if (ifi <= 0) { + if (errno == ENODEV && arg_ifindex_permissive) { + log_debug("Interface '%s' not found, but -f specified, ignoring.", iface); + return 0; /* done */ + } + + return log_error_errno(errno, "Unknown interface '%s': %m", iface); + } + } + + if (arg_ifindex > 0 && arg_ifindex != ifi) { + log_error("Specified multiple different interfaces. Refusing."); + return -EINVAL; + } + + arg_ifindex = ifi; + free_and_replace(arg_ifname, iface); + + return 1; +} + +static void print_source(uint64_t flags, usec_t rtt) { + char rtt_str[FORMAT_TIMESTAMP_MAX]; + + if (!arg_legend) + return; + + if (flags == 0) + return; + + printf("\n%s-- Information acquired via", ansi_grey()); + + if (flags != 0) + 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" : ""); + + assert_se(format_timespan(rtt_str, sizeof(rtt_str), rtt, 100)); + + printf(" in %s.%s\n" + "%s-- Data is authenticated: %s%s\n", + rtt_str, ansi_normal(), + ansi_grey(), yes_no(flags & SD_RESOLVED_AUTHENTICATED), ansi_normal()); +} + +static void print_ifindex_comment(int printed_so_far, int ifindex) { + char ifname[IF_NAMESIZE]; + + if (ifindex <= 0) + return; + + if (!if_indextoname(ifindex, ifname)) + log_warning_errno(errno, "Failed to resolve interface name for index %i, ignoring: %m", ifindex); + else + 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(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 = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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 log_error_errno(r, "%s: resolve call failed: %s", name, bus_error_message(&error, r)); + + 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; + const void *a; + size_t sz; + + assert_cc(sizeof(int) == sizeof(int32_t)); + + r = sd_bus_message_read(reply, "ii", &ifindex, &family); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_array(reply, 'y', &a, &sz); + 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 (!IN_SET(family, AF_INET, AF_INET6)) { + log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown"); + continue; + } + + if (sz != FAMILY_ADDRESS_SIZE(family)) { + log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown"); + return -EINVAL; + } + + 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) { + log_error("%s: no addresses found", name); + return -ESRCH; + } + + 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 = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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) { + log_error("%s: no names found", pretty); + return -ESRCH; + } + + 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; + _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL; + int r; + + r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX); + if (r < 0) + return log_oom(); + + p->refuse_compression = true; + + r = dns_packet_append_blob(p, d, l, NULL); + if (r < 0) + return log_oom(); + + r = dns_packet_read_rr(p, &rr, NULL, NULL); + 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 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; + unsigned n = 0; + uint64_t flags; + int r; + usec_t ts; + bool needs_authentication = false; + + 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); + + r = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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(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(SYNTHETIC_ERRNO(EINVAL), + "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(SYNTHETIC_ERRNO(EINVAL), + "Unknown DNS type %s.", 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; + char **p; + 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 = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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; + const void *a; + + assert_cc(sizeof(int) == sizeof(int32_t)); + + r = sd_bus_message_read(reply, "ii", &ifindex, &family); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_array(reply, 'y', &a, &sz); + 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 (!IN_SET(family, AF_INET, AF_INET6)) { + log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown"); + continue; + } + + if (sz != FAMILY_ADDRESS_SIZE(family)) { + log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown"); + return -EINVAL; + } + + 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; + char **p; + 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(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 **p, **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; + sd_bus *bus = 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; + + assert(bus); + + r = sd_bus_get_property_trivial(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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 = sd_bus_get_property(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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); + + printf("%sTransactions%s\n" + "Current Transactions: %" PRIu64 "\n" + " Total Transactions: %" PRIu64 "\n", + ansi_highlight(), + ansi_normal(), + n_current_transactions, + n_total_transactions); + + reply = sd_bus_message_unref(reply); + + r = sd_bus_get_property(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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); + + printf("\n%sCache%s\n" + " Current Cache Size: %" PRIu64 "\n" + " Cache Hits: %" PRIu64 "\n" + " Cache Misses: %" PRIu64 "\n", + ansi_highlight(), + ansi_normal(), + cache_size, + n_cache_hit, + n_cache_miss); + + reply = sd_bus_message_unref(reply); + + r = sd_bus_get_property(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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); + + printf("\n%sDNSSEC Verdicts%s\n" + " Secure: %" PRIu64 "\n" + " Insecure: %" PRIu64 "\n" + " Bogus: %" PRIu64 "\n" + " Indeterminate: %" PRIu64 "\n", + ansi_highlight(), + ansi_normal(), + n_dnssec_secure, + n_dnssec_insecure, + n_dnssec_bogus, + n_dnssec_indeterminate); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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, char **ret) { + _cleanup_free_ char *pretty = NULL; + int ifindex, family, r; + const void *a; + size_t sz; + + assert(m); + assert(ret); + + r = sd_bus_message_enter_container(m, 'r', with_ifindex ? "iiay" : "iay"); + if (r <= 0) + return r; + + if (with_ifindex) { + r = sd_bus_message_read(m, "i", &ifindex); + if (r < 0) + return r; + } + + r = sd_bus_message_read(m, "i", &family); + if (r < 0) + return r; + + r = sd_bus_message_read_array(m, 'y', &a, &sz); + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + if (with_ifindex && ifindex != 0) { + /* only show the global ones here */ + *ret = NULL; + return 1; + } + + if (!IN_SET(family, AF_INET, AF_INET6)) { + log_debug("Unexpected family, ignoring: %i", family); + + *ret = NULL; + return 1; + } + + if (sz != FAMILY_ADDRESS_SIZE(family)) { + log_debug("Address size mismatch, ignoring."); + + *ret = NULL; + return 1; + } + + r = in_addr_to_string(family, a, &pretty); + if (r < 0) + return r; + + *ret = TAKE_PTR(pretty); + + return 1; +} + +static int map_link_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + char ***l = userdata; + int r; + + assert(bus); + assert(member); + assert(m); + assert(l); + + r = sd_bus_message_enter_container(m, 'a', "(iay)"); + if (r < 0) + return r; + + for (;;) { + char *pretty = NULL; + + r = read_dns_server_one(m, false, &pretty); + if (r < 0) + return r; + if (r == 0) + break; + + if (isempty(pretty)) + continue; + + r = strv_consume(l, pretty); + if (r < 0) + return r; + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +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, 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 = strappend("~", 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 = userdata; + int r; + + assert(bus); + assert(member); + assert(m); + assert(l); + + r = sd_bus_message_enter_container(m, 'a', "(sb)"); + if (r < 0) + return r; + + for (;;) { + 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, 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) { + char **i; + + printf("%sLink %i (%s)%s:", + ansi_highlight(), ifindex, ifname, ansi_normal()); + + STRV_FOREACH(i, p) + printf(" %s", *i); + + printf("\n"); + + return 0; +} + +struct link_info { + uint64_t scopes_mask; + const char *llmnr; + const char *mdns; + const char *dns_over_tls; + const char *dnssec; + char *current_dns; + char **dns; + char **domains; + char **ntas; + bool dnssec_supported; + bool default_route; +}; + +static void link_info_clear(struct link_info *p) { + free(p->current_dns); + strv_free(p->dns); + strv_free(p->domains); + strv_free(p->ntas); +} + +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(struct link_info, scopes_mask) }, + { "DNS", "a(iay)", map_link_dns_servers, offsetof(struct link_info, dns) }, + { "CurrentDNSServer", "(iay)", map_link_current_dns_server, offsetof(struct link_info, current_dns) }, + { "Domains", "a(sb)", map_link_domains, offsetof(struct link_info, domains) }, + { "DefaultRoute", "b", NULL, offsetof(struct link_info, default_route) }, + { "LLMNR", "s", NULL, offsetof(struct link_info, llmnr) }, + { "MulticastDNS", "s", NULL, offsetof(struct link_info, mdns) }, + { "DNSOverTLS", "s", NULL, offsetof(struct link_info, dns_over_tls) }, + { "DNSSEC", "s", NULL, offsetof(struct link_info, dnssec) }, + { "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct link_info, ntas) }, + { "DNSSECSupported", "b", NULL, offsetof(struct link_info, 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) struct link_info link_info = {}; + _cleanup_free_ char *ifi = NULL, *p = NULL; + char ifname[IF_NAMESIZE] = ""; + char **i; + int r; + + assert(bus); + assert(ifindex > 0); + + if (!name) { + if (!if_indextoname(ifindex, ifname)) + return log_error_errno(errno, "Failed to resolve interface name for %i: %m", ifindex); + + name = ifname; + } + + if (asprintf(&ifi, "%i", ifindex) < 0) + return log_oom(); + + 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)); + + (void) pager_open(arg_pager_flags); + + if (mode == STATUS_DNS) + return status_print_strv_ifindex(ifindex, name, 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()); + + if (link_info.scopes_mask == 0) + printf(" Current Scopes: none\n"); + else + printf(" Current Scopes:%s%s%s%s%s\n", + 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" : ""); + + printf("DefaultRoute setting: %s\n" + " LLMNR setting: %s\n" + "MulticastDNS setting: %s\n" + " DNSOverTLS setting: %s\n" + " DNSSEC setting: %s\n" + " DNSSEC supported: %s\n", + yes_no(link_info.default_route), + strna(link_info.llmnr), + strna(link_info.mdns), + strna(link_info.dns_over_tls), + strna(link_info.dnssec), + yes_no(link_info.dnssec_supported)); + + if (link_info.current_dns) + printf(" Current DNS Server: %s\n", link_info.current_dns); + + STRV_FOREACH(i, link_info.dns) { + printf(" %s %s\n", + i == link_info.dns ? "DNS Servers:" : " ", + *i); + } + + STRV_FOREACH(i, link_info.domains) { + printf(" %s %s\n", + i == link_info.domains ? "DNS Domain:" : " ", + *i); + } + + STRV_FOREACH(i, link_info.ntas) { + printf(" %s %s\n", + i == link_info.ntas ? "DNSSEC NTA:" : " ", + *i); + } + + if (empty_line) + *empty_line = true; + + return 0; +} + +static int map_global_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + char ***l = userdata; + int r; + + assert(bus); + assert(member); + assert(m); + assert(l); + + r = sd_bus_message_enter_container(m, 'a', "(iiay)"); + if (r < 0) + return r; + + for (;;) { + char *pretty = NULL; + + r = read_dns_server_one(m, true, &pretty); + if (r < 0) + return r; + if (r == 0) + break; + + if (isempty(pretty)) + continue; + + r = strv_consume(l, pretty); + if (r < 0) + return r; + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +static int map_global_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, 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 = userdata; + int r; + + assert(bus); + assert(member); + assert(m); + assert(l); + + r = sd_bus_message_enter_container(m, 'a', "(isb)"); + if (r < 0) + return r; + + for (;;) { + 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, 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_global(char **p) { + char **i; + + printf("%sGlobal%s:", ansi_highlight(), ansi_normal()); + + STRV_FOREACH(i, p) + printf(" %s", *i); + + printf("\n"); + + return 0; +} + +struct global_info { + char *current_dns; + char **dns; + char **fallback_dns; + char **domains; + char **ntas; + const char *llmnr; + const char *mdns; + const char *dns_over_tls; + const char *dnssec; + bool dnssec_supported; +}; + +static void global_info_clear(struct global_info *p) { + free(p->current_dns); + strv_free(p->dns); + strv_free(p->fallback_dns); + strv_free(p->domains); + strv_free(p->ntas); +} + +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(struct global_info, dns) }, + { "FallbackDNS", "a(iiay)", map_global_dns_servers, offsetof(struct global_info, fallback_dns) }, + { "CurrentDNSServer", "(iiay)", map_global_current_dns_server, offsetof(struct global_info, current_dns) }, + { "Domains", "a(isb)", map_global_domains, offsetof(struct global_info, domains) }, + { "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct global_info, ntas) }, + { "LLMNR", "s", NULL, offsetof(struct global_info, llmnr) }, + { "MulticastDNS", "s", NULL, offsetof(struct global_info, mdns) }, + { "DNSOverTLS", "s", NULL, offsetof(struct global_info, dns_over_tls) }, + { "DNSSEC", "s", NULL, offsetof(struct global_info, dnssec) }, + { "DNSSECSupported", "b", NULL, offsetof(struct global_info, 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_(global_info_clear) struct global_info global_info = {}; + char **i; + 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)); + + (void) pager_open(arg_pager_flags); + + if (mode == STATUS_DNS) + return status_print_strv_global(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()); + + printf(" LLMNR setting: %s\n" + "MulticastDNS setting: %s\n" + " DNSOverTLS setting: %s\n" + " DNSSEC setting: %s\n" + " DNSSEC supported: %s\n", + strna(global_info.llmnr), + strna(global_info.mdns), + strna(global_info.dns_over_tls), + strna(global_info.dnssec), + yes_no(global_info.dnssec_supported)); + + if (global_info.current_dns) + printf(" Current DNS Server: %s\n", global_info.current_dns); + + STRV_FOREACH(i, global_info.dns) { + printf(" %s %s\n", + i == global_info.dns ? "DNS Servers:" : " ", + *i); + } + + STRV_FOREACH(i, global_info.fallback_dns) { + printf("%s %s\n", + i == global_info.fallback_dns ? "Fallback DNS Servers:" : " ", + *i); + } + + STRV_FOREACH(i, global_info.domains) { + printf(" %s %s\n", + i == global_info.domains ? "DNS Domain:" : " ", + *i); + } + + strv_sort(global_info.ntas); + STRV_FOREACH(i, global_info.ntas) { + printf(" %s %s\n", + i == global_info.ntas ? "DNSSEC NTA:" : " ", + *i); + } + + *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; + sd_netlink_message *i; + 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_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"); + + r = 0; + for (i = reply; i; i = sd_netlink_message_next(i)) { + const char *name; + int ifindex, q; + uint16_t type; + + q = sd_netlink_message_get_type(i, &type); + if (q < 0) + return rtnl_log_parse_error(q); + + if (type != RTM_NEWLINK) + continue; + + q = sd_rtnl_message_link_get_ifindex(i, &ifindex); + if (q < 0) + return rtnl_log_parse_error(q); + + if (ifindex == LOOPBACK_IFINDEX) + continue; + + q = sd_netlink_message_read_string(i, IFLA_IFNAME, &name); + if (q < 0) + return rtnl_log_parse_error(q); + + q = status_ifindex(bus, ifindex, 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; + int q, r = 0; + + if (argc > 1) { + char **ifname; + bool empty_line = false; + + STRV_FOREACH(ifname, argv + 1) { + int ifindex; + + ifindex = parse_ifindex_and_warn(*ifname); + if (ifindex < 0) + 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 log_interface_is_managed(int r, int ifindex) { + char ifname[IFNAMSIZ]; + + return log_error_errno(r, + "The specified interface %s is managed by systemd-networkd. Operation refused.\n" + "Please configure DNS settings for systemd-networkd managed interfaces directly in their .network files.", + strna(if_indextoname(ifindex, ifname))); +} + +static int verb_dns(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 *req = NULL; + sd_bus *bus = userdata; + char **p; + int r; + + assert(bus); + + 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 = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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', "(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(argv + 2, STRV_MAKE(""))) { + STRV_FOREACH(p, argv + 2) { + struct in_addr_data data; + + r = in_addr_from_string_auto(*p, &data.family, &data.address); + if (r < 0) + return log_error_errno(r, "Failed to parse DNS server address: %s", *p); + + r = sd_bus_message_open_container(req, 'r', "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); + + 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) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 verb_domain(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 *req = NULL; + sd_bus *bus = userdata; + char **p; + int r; + + assert(bus); + + 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 = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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(argv + 2, STRV_MAKE(""))) { + STRV_FOREACH(p, argv + 2) { + 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) { + log_error("Domain not valid: %s", n); + return -EINVAL; + } + + 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); + + r = sd_bus_call(bus, req, 0, &error, NULL); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 = userdata; + int r, b; + + assert(bus); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "SetLinkDefaultRoute", + &error, + NULL, + "ib", arg_ifindex, b); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 = userdata; + int r; + + assert(bus); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "SetLinkLLMNR", + &error, + NULL, + "is", arg_ifindex, argv[2]); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 = userdata; + int r; + + assert(bus); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "SetLinkMulticastDNS", + &error, + NULL, + "is", arg_ifindex, argv[2]); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 = userdata; + int r; + + assert(bus); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "SetLinkDNSOverTLS", + &error, + NULL, + "is", arg_ifindex, argv[2]); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 = userdata; + int r; + + assert(bus); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "SetLinkDNSSEC", + &error, + NULL, + "is", arg_ifindex, argv[2]); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 verb_nta(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 *req = NULL; + sd_bus *bus = userdata; + char **p; + int r; + bool clear; + + assert(bus); + + 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) { + log_error("Domain not valid: %s", *p); + return -EINVAL; + } + } + + r = sd_bus_message_new_method_call( + bus, + &req, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "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, clear ? NULL : argv + 2); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, req, 0, &error, NULL); + if (r < 0) { + if (sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) + return log_interface_is_managed(r, arg_ifindex); + + 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 = userdata; + int r; + + assert(bus); + + 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 = sd_bus_call_method(bus, + "org.freedesktop.resolve1", + "/org/freedesktop/resolve1", + "org.freedesktop.resolve1.Manager", + "RevertLink", + &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 void help_protocol_types(void) { + if (arg_legend) + puts("Known protocol types:"); + puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6\nmdns\nmdns-ipv4\nmdns-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$s [OPTIONS...] --reset-statistics\n" + "\n" + "Resolve domain names, IPv4 and IPv6 addresses, DNS records, and services.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --no-pager Do not pipe output into a pager\n" + " -4 Resolve IPv4 addresses\n" + " -6 Resolve IPv6 addresses\n" + " -i --interface=INTERFACE Look on interface\n" + " -p --protocol=PROTO|help Look via protocol\n" + " -t --type=TYPE|help Query RR with DNS type\n" + " -c --class=CLASS|help Query RR with DNS class\n" + " --service Resolve service (SRV)\n" + " --service-address=BOOL Resolve address for services (default: yes)\n" + " --service-txt=BOOL Resolve TXT records for services (default: yes)\n" + " --openpgp Query OpenPGP public key\n" + " --tlsa Query TLS public key\n" + " --cname=BOOL Follow CNAME redirects (default: yes)\n" + " --search=BOOL Use search domains for single-label names\n" + " (default: yes)\n" + " --raw[=payload|packet] Dump the answer as binary data\n" + " --legend=BOOL Print headers and additional info (default: yes)\n" + " --statistics Show resolver statistics\n" + " --reset-statistics Reset resolver statistics\n" + " --status Show link and server status\n" + " --flush-caches Flush all local DNS caches\n" + " --reset-server-features\n" + " Forget learnt DNS server feature levels\n" + " --set-dns=SERVER Set per-interface DNS server address\n" + " --set-domain=DOMAIN Set per-interface search domain\n" + " --set-llmnr=MODE Set per-interface LLMNR mode\n" + " --set-mdns=MODE Set per-interface MulticastDNS mode\n" + " --set-dnsovertls=MODE Set per-interface DNS-over-TLS mode\n" + " --set-dnssec=MODE Set per-interface DNSSEC mode\n" + " --set-nta=DOMAIN Set per-interface DNSSEC NTA\n" + " --revert Revert per-interface configuration\n" + "\nSee the %2$s for details.\n" + , program_invocation_short_name + , 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("%1$s [OPTIONS...] {COMMAND} ...\n" + "\n" + "Send control commands to the network name resolution manager, or\n" + "resolve domain names, IPv4 and IPv6 addresses, DNS records, and services.\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-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" + " --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" + "\n" + "Commands:\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" + " 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" + "\nSee the %2$s for details.\n" + , program_invocation_short_name + , 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) { + log_error("Failed to parse RR record type %s", optarg); + return r; + } + 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) { + log_error("Failed to parse RR record class %s", optarg); + return r; + } + arg_class = (uint16_t) r; + assert((int) arg_class == r); + + break; + + case ARG_LEGEND: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --legend= argument"); + + arg_legend = 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(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --cname= argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0); + break; + + case ARG_SERVICE_ADDRESS: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --service-address= argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0); + break; + + case ARG_SERVICE_TXT: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --service-txt= argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0); + break; + + case ARG_SEARCH: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --search argument."); + 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("Unhandled option"); + } + + 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_SERVICE_ADDRESS, + ARG_SERVICE_TXT, + ARG_RAW, + ARG_SEARCH, + ARG_NO_PAGER, + }; + + 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-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 }, + {} + }; + + 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 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) { + log_error("Failed to parse RR record type %s", optarg); + return r; + } + 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) { + log_error("Failed to parse RR record class %s", optarg); + return r; + } + arg_class = (uint16_t) r; + assert((int) arg_class == r); + + break; + + case ARG_LEGEND: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --legend= argument"); + + arg_legend = 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(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --cname= argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0); + break; + + case ARG_SERVICE_ADDRESS: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --service-address= argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0); + break; + + case ARG_SERVICE_TXT: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --service-txt= argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0); + break; + + case ARG_SEARCH: + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Failed to parse --search argument."); + SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0); + break; + + case ARG_NO_PAGER: + arg_pager_flags |= PAGER_DISABLE; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + 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 }, + {} + }; + + 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, i; + + 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 (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("invalid mode"); + } + + return 0; +} + +static int run(int argc, char **argv) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + setlocale(LC_ALL, ""); + log_parse_environment(); + log_open(); + + if (streq(program_invocation_short_name, "resolvconf")) + r = resolvconf_parse_argv(argc, argv); + else if (streq(program_invocation_short_name, "systemd-resolve")) + 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 (STR_IN_SET(program_invocation_short_name, "systemd-resolve", "resolvconf")) + return compat_main(argc, argv, bus); + + return native_main(argc, argv, bus); +} + +DEFINE_MAIN_FUNCTION(run); |