+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
#include "strv.h"
#include "terminal-util.h"
-#define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
+#define DNS_CALL_TIMEOUT_USEC (90*USEC_PER_SEC)
static int arg_family = AF_UNSPEC;
static int arg_ifindex = 0;
MODE_STATISTICS,
MODE_RESET_STATISTICS,
MODE_FLUSH_CACHES,
+ MODE_RESET_SERVER_FEATURES,
MODE_STATUS,
} arg_mode = MODE_RESOLVE_HOST;
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" : "");
+ 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));
int r;
char ifname[IF_NAMESIZE] = "";
- r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0);
+ r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX);
if (r < 0)
return log_oom();
return 0;
}
-static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_t type) {
+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] = "";
r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
if (r < 0) {
- log_error("%s: resolve call failed: %s", name, bus_error_message(&error, r));
+ if (warn_missing || r != -ENXIO)
+ log_error("%s: resolve call failed: %s", name, bus_error_message(&error, r));
return r;
}
return bus_log_parse_error(r);
if (n == 0) {
- log_error("%s: no records found", name);
+ if (warn_missing)
+ log_error("%s: no records found", name);
return -ESRCH;
}
if (type == 0)
type = arg_type ?: DNS_TYPE_A;
- return resolve_record(bus, n, class, type);
+ return resolve_record(bus, n, class, type, true);
invalid:
log_error("Invalid DNS URI: %s", name);
if (r < 0)
return bus_log_parse_error(r);
- c = 0;
while ((r = sd_bus_message_read_array(reply, 'y', (const void**) &p, &sz)) > 0) {
_cleanup_free_ char *escaped = NULL;
return log_oom();
printf("%*s%s\n", (int) indent, "", escaped);
- c++;
}
if (r < 0)
return bus_log_parse_error(r);
}
domain++;
- r = string_hashsum_sha224(address, domain - 1 - address, &hashed);
+ 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);
- return resolve_record(bus, full,
- arg_class ?: DNS_CLASS_IN,
- arg_type ?: DNS_TYPE_OPENPGPKEY);
+ 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) {
port = strrchr(address, ':');
if (port) {
- r = safe_atou16(port + 1, &port_num);
- if (r < 0 || port_num == 0)
+ 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);
return resolve_record(bus, full,
arg_class ?: DNS_CLASS_IN,
- arg_type ?: DNS_TYPE_TLSA);
+ arg_type ?: DNS_TYPE_TLSA, true);
}
static int show_statistics(sd_bus *bus) {
return 0;
}
+static int reset_server_features(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",
+ "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 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;
{}
};
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *ifi = NULL, *p = NULL;
char ifname[IF_NAMESIZE] = "";
char **i;
"org.freedesktop.resolve1",
p,
property_map,
+ &error,
&link_info);
if (r < 0) {
- log_error_errno(r, "Failed to get link data for %i: %m", ifindex);
+ log_error_errno(r, "Failed to get link data for %i: %s", ifindex, bus_error_message(&error, r));
goto finish;
}
yes_no(link_info.dnssec_supported));
STRV_FOREACH(i, link_info.dns) {
- printf(" %s %s\n",
- i == link_info.dns ? "DNS Server:" : " ",
+ printf(" %s %s\n",
+ i == link_info.dns ? "DNS Servers:" : " ",
*i);
}
{}
};
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char **i;
int r;
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
property_map,
+ &error,
&global_info);
if (r < 0) {
- log_error_errno(r, "Failed to get global data: %m");
+ log_error_errno(r, "Failed to get global data: %s", bus_error_message(&error, r));
goto finish;
}
printf("%sGlobal%s\n", ansi_highlight(), ansi_normal());
STRV_FOREACH(i, global_info.dns) {
- printf(" %s %s\n",
- i == global_info.dns ? "DNS Server:" : " ",
+ printf(" %s %s\n",
+ i == global_info.dns ? "DNS Servers:" : " ",
*i);
}
_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 = true;
+ bool empty_line = false;
int r;
assert(bus);
static void help_protocol_types(void) {
if (arg_legend)
puts("Known protocol types:");
- puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6");
+ puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6\nmdns\nmnds-ipv4\nmdns-ipv6");
}
static void help_dns_types(void) {
"%1$s [OPTIONS...] --statistics\n"
"%1$s [OPTIONS...] --reset-statistics\n"
"\n"
- "Resolve domain names, IPv4 and IPv6 addresses, DNS resource records, and services.\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"
" --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"
, program_invocation_short_name);
}
ARG_RESET_STATISTICS,
ARG_STATUS,
ARG_FLUSH_CACHES,
+ ARG_RESET_SERVER_FEATURES,
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 },
+ { "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 },
{}
};
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 {
log_error("Unknown protocol specifier: %s", optarg);
return -EINVAL;
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;
while (argv[optind]) {
int k;
- k = resolve_record(bus, argv[optind], arg_class, arg_type);
+ k = resolve_record(bus, argv[optind], arg_class, arg_type, true);
if (r == 0)
r = k;
r = flush_caches(bus);
break;
+ case MODE_RESET_SERVER_FEATURES:
+ if (argc > optind) {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
+ }
+
+ r = reset_server_features(bus);
+ break;
+
case MODE_STATUS:
if (argc > optind) {
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