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-rw-r--r--src/grp-resolve/systemd-resolve/resolve-tool.c2025
1 files changed, 2025 insertions, 0 deletions
diff --git a/src/grp-resolve/systemd-resolve/resolve-tool.c b/src/grp-resolve/systemd-resolve/resolve-tool.c
new file mode 100644
index 0000000000..3e19b8563c
--- /dev/null
+++ b/src/grp-resolve/systemd-resolve/resolve-tool.c
@@ -0,0 +1,2025 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <getopt.h>
+#include <net/if.h>
+
+#include <systemd/sd-bus.h>
+
+#include "basic-dns/resolved-def.h"
+#include "basic-dns/resolved-dns-packet.h"
+#include "sd-bus/bus-error.h"
+#include "sd-bus/bus-util.h"
+#include "sd-netlink/netlink-util.h"
+#include "systemd-basic/af-list.h"
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/escape.h"
+#include "systemd-basic/in-addr-util.h"
+#include "systemd-basic/parse-util.h"
+#include "systemd-basic/strv.h"
+#include "systemd-basic/terminal-util.h"
+#include "systemd-gcrypt/gcrypt-util.h"
+#include "systemd-shared/pager.h"
+#include "systemd-staging/sd-netlink.h"
+
+#define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
+
+static int arg_family = AF_UNSPEC;
+static int arg_ifindex = 0;
+static uint16_t arg_type = 0;
+static uint16_t arg_class = 0;
+static bool arg_legend = true;
+static uint64_t arg_flags = 0;
+static bool arg_no_pager = false;
+
+typedef enum ServiceFamily {
+ SERVICE_FAMILY_TCP,
+ SERVICE_FAMILY_UDP,
+ SERVICE_FAMILY_SCTP,
+ _SERVICE_FAMILY_INVALID = -1,
+} ServiceFamily;
+static ServiceFamily arg_service_family = SERVICE_FAMILY_TCP;
+
+typedef enum RawType {
+ RAW_NONE,
+ RAW_PAYLOAD,
+ RAW_PACKET,
+} RawType;
+static RawType arg_raw = RAW_NONE;
+
+static enum {
+ MODE_RESOLVE_HOST,
+ MODE_RESOLVE_RECORD,
+ MODE_RESOLVE_SERVICE,
+ MODE_RESOLVE_OPENPGP,
+ MODE_RESOLVE_TLSA,
+ MODE_STATISTICS,
+ MODE_RESET_STATISTICS,
+ MODE_FLUSH_CACHES,
+ MODE_STATUS,
+} arg_mode = MODE_RESOLVE_HOST;
+
+static ServiceFamily service_family_from_string(const char *s) {
+ if (s == NULL || streq(s, "tcp"))
+ return SERVICE_FAMILY_TCP;
+ if (streq(s, "udp"))
+ return SERVICE_FAMILY_UDP;
+ if (streq(s, "sctp"))
+ return SERVICE_FAMILY_SCTP;
+ return _SERVICE_FAMILY_INVALID;
+}
+
+static const char* service_family_to_string(ServiceFamily service) {
+ switch(service) {
+ case SERVICE_FAMILY_TCP:
+ return "_tcp";
+ case SERVICE_FAMILY_UDP:
+ return "_udp";
+ case SERVICE_FAMILY_SCTP:
+ return "_sctp";
+ default:
+ assert_not_reached("invalid service");
+ }
+}
+
+static void print_source(uint64_t flags, usec_t rtt) {
+ char rtt_str[FORMAT_TIMESTAMP_MAX];
+
+ if (!arg_legend)
+ return;
+
+ if (flags == 0)
+ return;
+
+ fputs("\n-- Information acquired via", stdout);
+
+ 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", rtt_str);
+
+ fputc('.', stdout);
+ fputc('\n', stdout);
+
+ printf("-- Data is authenticated: %s\n", yes_no(flags & SD_RESOLVED_AUTHENTICATED));
+}
+
+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;
+ char ifname[IF_NAMESIZE] = "";
+ unsigned c = 0;
+ int r;
+ uint64_t flags;
+ usec_t ts;
+
+ assert(name);
+
+ if (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
+ return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
+
+ log_debug("Resolving %s (family %s, interface %s).", name, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : 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, DNS_CALL_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;
+ 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;
+ }
+
+ ifname[0] = 0;
+ if (ifindex > 0 && !if_indextoname(ifindex, ifname))
+ log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
+
+ 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);
+
+ printf("%*s%s %s%s%s\n",
+ (int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
+ pretty,
+ isempty(ifname) ? "" : "%", ifname);
+
+ 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;
+ char ifname[IF_NAMESIZE] = "";
+ 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();
+
+ if (ifindex > 0 && !if_indextoname(ifindex, ifname))
+ return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
+
+ log_debug("Resolving %s%s%s.", pretty, isempty(ifname) ? "" : "%", ifname);
+
+ 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, DNS_CALL_TIMEOUT_USEC, &error, &reply);
+ if (r < 0) {
+ log_error("%s: resolve call failed: %s", pretty, bus_error_message(&error, r));
+ return 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;
+
+ 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;
+
+ ifname[0] = 0;
+ if (ifindex > 0 && !if_indextoname(ifindex, ifname))
+ log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
+
+ printf("%*s%*s%*s%s %s\n",
+ (int) strlen(pretty), c == 0 ? pretty : "",
+ isempty(ifname) ? 0 : 1, c > 0 || isempty(ifname) ? "" : "%",
+ (int) strlen(ifname), c == 0 ? ifname : "",
+ c == 0 ? ":" : " ",
+ n);
+
+ 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;
+ char ifname[IF_NAMESIZE] = "";
+
+ r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0);
+ 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;
+
+ s = dns_resource_record_to_string(rr);
+ if (!s)
+ return log_oom();
+
+ if (ifindex > 0 && !if_indextoname(ifindex, ifname))
+ log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
+
+ printf("%s%s%s\n", s, isempty(ifname) ? "" : " # interface ", ifname);
+ }
+
+ 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;
+ char ifname[IF_NAMESIZE] = "";
+ unsigned n = 0;
+ uint64_t flags;
+ int r;
+ usec_t ts;
+ bool needs_authentication = false;
+
+ assert(name);
+
+ if (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
+ return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
+
+ log_debug("Resolving %s %s %s (interface %s).", name, dns_class_to_string(class), dns_type_to_string(type), isempty(ifname) ? "*" : 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, DNS_CALL_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) {
+ log_error("DNS class specified twice.");
+ return -EINVAL;
+ }
+
+ e = strchrnul(f, ';');
+ t = strndup(f, e - f);
+ if (!t)
+ return log_oom();
+
+ r = dns_class_from_string(t);
+ if (r < 0) {
+ log_error("Unknown DNS class %s.", t);
+ return -EINVAL;
+ }
+
+ 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) {
+ log_error("DNS type specified twice.");
+ return -EINVAL;
+ }
+
+ e = strchrnul(f, ';');
+ t = strndup(f, e - f);
+ if (!t)
+ return log_oom();
+
+ r = dns_type_from_string(t);
+ if (r < 0) {
+ log_error("Unknown DNS type %s.", t);
+ return -EINVAL;
+ }
+
+ 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:
+ log_error("Invalid DNS URI: %s", name);
+ return -EINVAL;
+}
+
+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;
+ char ifname[IF_NAMESIZE] = "";
+ 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 (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
+ return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
+
+ 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(ifname) ? "*" : ifname);
+ else if (type)
+ log_debug("Resolving service type %s of %s (family %s, interface %s).", type, domain, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
+ else
+ log_debug("Resolving service type %s (family %s, interface %s).", domain, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : 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, DNS_CALL_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;
+ 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;
+ }
+
+ ifname[0] = 0;
+ if (ifindex > 0 && !if_indextoname(ifindex, ifname))
+ log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
+
+ r = in_addr_to_string(family, a, &pretty);
+ if (r < 0)
+ return log_error_errno(r, "Failed to print address for %s: %m", name);
+
+ printf("%*s%s%s%s\n", (int) indent, "", pretty, isempty(ifname) ? "" : "%s", ifname);
+ }
+ 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 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) {
+ log_error("Address does not contain '@': \"%s\"", address);
+ return -EINVAL;
+ } else if (domain == address || domain[1] == '\0') {
+ log_error("Address starts or ends with '@': \"%s\"", address);
+ return -EINVAL;
+ }
+ 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 = NULL;
+ 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 resolve_tlsa(sd_bus *bus, 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 = safe_atou16(port + 1, &port_num);
+ if (r < 0 || port_num == 0)
+ return log_error_errno(r, "Invalid port \"%s\".", port + 1);
+
+ address = strndupa(address, port - address);
+ }
+
+ r = asprintf(&full, "_%u.%s.%s",
+ port_num,
+ service_family_to_string(arg_service_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 int show_statistics(sd_bus *bus) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ 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(sd_bus *bus) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ 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(sd_bus *bus) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ 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 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 (;;) {
+ const void *a;
+ char *pretty;
+ int family;
+ size_t sz;
+
+ r = sd_bus_message_enter_container(m, 'r', "iay");
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ 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 (!IN_SET(family, AF_INET, AF_INET6)) {
+ log_debug("Unexpected family, ignoring.");
+ continue;
+ }
+
+ if (sz != FAMILY_ADDRESS_SIZE(family)) {
+ log_debug("Address size mismatch, ignoring.");
+ continue;
+ }
+
+ r = in_addr_to_string(family, a, &pretty);
+ if (r < 0)
+ return r;
+
+ 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_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 (;;) {
+ const char *domain;
+ int route_only;
+ char *pretty;
+
+ r = sd_bus_message_read(m, "(sb)", &domain, &route_only);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ if (route_only)
+ pretty = strappend("~", domain);
+ else
+ pretty = strdup(domain);
+ if (!pretty)
+ return -ENOMEM;
+
+ 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_ifindex(sd_bus *bus, int ifindex, const char *name, bool *empty_line) {
+
+ struct link_info {
+ uint64_t scopes_mask;
+ char *llmnr;
+ char *mdns;
+ char *dnssec;
+ char **dns;
+ char **domains;
+ char **ntas;
+ int dnssec_supported;
+ } link_info = {};
+
+ 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) },
+ { "Domains", "a(sb)", map_link_domains, offsetof(struct link_info, domains) },
+ { "LLMNR", "s", NULL, offsetof(struct link_info, llmnr) },
+ { "MulticastDNS", "s", NULL, offsetof(struct link_info, mdns) },
+ { "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_free_ char *ifi = NULL, *p = NULL;
+ char ifname[IF_NAMESIZE] = "";
+ char **i;
+ int r;
+
+ assert(bus);
+ assert(ifindex > 0);
+ assert(empty_line);
+
+ 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,
+ &link_info);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get link data for %i: %m", ifindex);
+ goto finish;
+ }
+
+ pager_open(arg_no_pager, false);
+
+ if (*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(" LLMNR setting: %s\n"
+ "MulticastDNS setting: %s\n"
+ " DNSSEC setting: %s\n"
+ " DNSSEC supported: %s\n",
+ strna(link_info.llmnr),
+ strna(link_info.mdns),
+ strna(link_info.dnssec),
+ yes_no(link_info.dnssec_supported));
+
+ 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);
+ }
+
+ *empty_line = true;
+
+ r = 0;
+
+finish:
+ strv_free(link_info.dns);
+ strv_free(link_info.domains);
+ free(link_info.llmnr);
+ free(link_info.mdns);
+ free(link_info.dnssec);
+ strv_free(link_info.ntas);
+ return r;
+}
+
+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 (;;) {
+ const void *a;
+ char *pretty;
+ int family, ifindex;
+ size_t sz;
+
+ r = sd_bus_message_enter_container(m, 'r', "iiay");
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = sd_bus_message_read(m, "ii", &ifindex, &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 (ifindex != 0) /* only show the global ones here */
+ continue;
+
+ if (!IN_SET(family, AF_INET, AF_INET6)) {
+ log_debug("Unexpected family, ignoring.");
+ continue;
+ }
+
+ if (sz != FAMILY_ADDRESS_SIZE(family)) {
+ log_debug("Address size mismatch, ignoring.");
+ continue;
+ }
+
+ r = in_addr_to_string(family, a, &pretty);
+ if (r < 0)
+ return r;
+
+ 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_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 (;;) {
+ const char *domain;
+ int route_only, ifindex;
+ char *pretty;
+
+ r = sd_bus_message_read(m, "(isb)", &ifindex, &domain, &route_only);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ if (ifindex != 0) /* only show the global ones here */
+ continue;
+
+ if (route_only)
+ pretty = strappend("~", domain);
+ else
+ pretty = strdup(domain);
+ if (!pretty)
+ return -ENOMEM;
+
+ 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_global(sd_bus *bus, bool *empty_line) {
+
+ struct global_info {
+ char **dns;
+ char **domains;
+ char **ntas;
+ } global_info = {};
+
+ static const struct bus_properties_map property_map[] = {
+ { "DNS", "a(iiay)", map_global_dns_servers, offsetof(struct global_info, dns) },
+ { "Domains", "a(isb)", map_global_domains, offsetof(struct global_info, domains) },
+ { "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct global_info, ntas) },
+ {}
+ };
+
+ char **i;
+ int r;
+
+ assert(bus);
+ assert(empty_line);
+
+ r = bus_map_all_properties(bus,
+ "org.freedesktop.resolve1",
+ "/org/freedesktop/resolve1",
+ property_map,
+ &global_info);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get global data: %m");
+ goto finish;
+ }
+
+ if (strv_isempty(global_info.dns) && strv_isempty(global_info.domains) && strv_isempty(global_info.ntas)) {
+ r = 0;
+ goto finish;
+ }
+
+ pager_open(arg_no_pager, false);
+
+ printf("%sGlobal%s\n", ansi_highlight(), ansi_normal());
+ STRV_FOREACH(i, global_info.dns) {
+ printf(" %s %s\n",
+ i == global_info.dns ? "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;
+
+ r = 0;
+
+finish:
+ strv_free(global_info.dns);
+ strv_free(global_info.domains);
+ strv_free(global_info.ntas);
+
+ return r;
+}
+
+static int status_all(sd_bus *bus) {
+ _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, &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, &empty_line);
+ if (q < 0 && r >= 0)
+ r = q;
+ }
+
+ return r;
+}
+
+static void help_protocol_types(void) {
+ if (arg_legend)
+ puts("Known protocol types:");
+ puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6");
+}
+
+static void help_dns_types(void) {
+ const char *t;
+ int i;
+
+ if (arg_legend)
+ puts("Known DNS RR types:");
+ for (i = 0; i < _DNS_TYPE_MAX; i++) {
+ t = dns_type_to_string(i);
+ if (t)
+ puts(t);
+ }
+}
+
+static void help_dns_classes(void) {
+ const char *t;
+ int i;
+
+ if (arg_legend)
+ puts("Known DNS RR classes:");
+ for (i = 0; i < _DNS_CLASS_MAX; i++) {
+ t = dns_class_to_string(i);
+ if (t)
+ puts(t);
+ }
+}
+
+static void help(void) {
+ 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"
+ , program_invocation_short_name);
+}
+
+static int 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_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", 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 },
+ { "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':
+ help();
+ return 0; /* done */;
+
+ case ARG_VERSION:
+ return version();
+
+ case '4':
+ arg_family = AF_INET;
+ break;
+
+ case '6':
+ arg_family = AF_INET6;
+ break;
+
+ case 'i': {
+ int ifi;
+
+ if (parse_ifindex(optarg, &ifi) >= 0)
+ arg_ifindex = ifi;
+ else {
+ ifi = if_nametoindex(optarg);
+ if (ifi <= 0)
+ return log_error_errno(errno, "Unknown interface %s: %m", optarg);
+
+ arg_ifindex = ifi;
+ }
+
+ 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 {
+ log_error("Unknown protocol specifier: %s", optarg);
+ return -EINVAL;
+ }
+
+ 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;
+ arg_service_family = service_family_from_string(optarg);
+ if (arg_service_family < 0) {
+ log_error("Unknown service family \"%s\".", optarg);
+ return -EINVAL;
+ }
+ break;
+
+ case ARG_RAW:
+ if (on_tty()) {
+ log_error("Refusing to write binary data to tty.");
+ return -ENOTTY;
+ }
+
+ if (optarg == NULL || streq(optarg, "payload"))
+ arg_raw = RAW_PAYLOAD;
+ else if (streq(optarg, "packet"))
+ arg_raw = RAW_PACKET;
+ else {
+ log_error("Unknown --raw specifier \"%s\".", optarg);
+ return -EINVAL;
+ }
+
+ 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_STATUS:
+ arg_mode = MODE_STATUS;
+ break;
+
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ if (arg_type == 0 && arg_class != 0) {
+ log_error("--class= may only be used in conjunction with --type=.");
+ return -EINVAL;
+ }
+
+ if (arg_type != 0 && arg_mode == MODE_RESOLVE_SERVICE) {
+ log_error("--service and --type= may not be combined.");
+ return -EINVAL;
+ }
+
+ 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 */;
+}
+
+int main(int argc, char **argv) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ r = sd_bus_open_system(&bus);
+ if (r < 0) {
+ log_error_errno(r, "sd_bus_open_system: %m");
+ goto finish;
+ }
+
+ switch (arg_mode) {
+
+ case MODE_RESOLVE_HOST:
+ if (optind >= argc) {
+ log_error("No arguments passed.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ while (argv[optind]) {
+ int family, ifindex, k;
+ union in_addr_union a;
+
+ if (startswith(argv[optind], "dns:"))
+ k = resolve_rfc4501(bus, argv[optind]);
+ else {
+ k = in_addr_ifindex_from_string_auto(argv[optind], &family, &a, &ifindex);
+ if (k >= 0)
+ k = resolve_address(bus, family, &a, ifindex);
+ else
+ k = resolve_host(bus, argv[optind]);
+ }
+
+ if (r == 0)
+ r = k;
+
+ optind++;
+ }
+ break;
+
+ case MODE_RESOLVE_RECORD:
+ if (optind >= argc) {
+ log_error("No arguments passed.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ while (argv[optind]) {
+ int k;
+
+ k = resolve_record(bus, argv[optind], arg_class, arg_type, true);
+ if (r == 0)
+ r = k;
+
+ optind++;
+ }
+ break;
+
+ case MODE_RESOLVE_SERVICE:
+ if (argc < optind + 1) {
+ log_error("Domain specification required.");
+ r = -EINVAL;
+ goto finish;
+
+ } else if (argc == optind + 1)
+ r = resolve_service(bus, NULL, NULL, argv[optind]);
+ else if (argc == optind + 2)
+ r = resolve_service(bus, NULL, argv[optind], argv[optind+1]);
+ else if (argc == optind + 3)
+ r = resolve_service(bus, argv[optind], argv[optind+1], argv[optind+2]);
+ else {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ break;
+
+ case MODE_RESOLVE_OPENPGP:
+ if (argc < optind + 1) {
+ log_error("E-mail address required.");
+ r = -EINVAL;
+ goto finish;
+
+ }
+
+ r = 0;
+ while (optind < argc) {
+ int k;
+
+ k = resolve_openpgp(bus, argv[optind++]);
+ if (k < 0)
+ r = k;
+ }
+ break;
+
+ case MODE_RESOLVE_TLSA:
+ if (argc < optind + 1) {
+ log_error("Domain name required.");
+ r = -EINVAL;
+ goto finish;
+
+ }
+
+ r = 0;
+ while (optind < argc) {
+ int k;
+
+ k = resolve_tlsa(bus, argv[optind++]);
+ if (k < 0)
+ r = k;
+ }
+ break;
+
+ case MODE_STATISTICS:
+ if (argc > optind) {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ r = show_statistics(bus);
+ break;
+
+ case MODE_RESET_STATISTICS:
+ if (argc > optind) {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ r = reset_statistics(bus);
+ break;
+
+ case MODE_FLUSH_CACHES:
+ if (argc > optind) {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ r = flush_caches(bus);
+ break;
+
+ case MODE_STATUS:
+
+ if (argc > optind) {
+ char **ifname;
+ bool empty_line = false;
+
+ r = 0;
+ STRV_FOREACH(ifname, argv + optind) {
+ int ifindex, q;
+
+ q = parse_ifindex(argv[optind], &ifindex);
+ if (q < 0) {
+ ifindex = if_nametoindex(argv[optind]);
+ if (ifindex <= 0) {
+ log_error_errno(errno, "Failed to resolve interface name: %s", argv[optind]);
+ continue;
+ }
+ }
+
+ q = status_ifindex(bus, ifindex, NULL, &empty_line);
+ if (q < 0 && r >= 0)
+ r = q;
+ }
+ } else
+ r = status_all(bus);
+
+ break;
+ }
+
+finish:
+ pager_close();
+
+ return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-09 18:34:23 +0000