| /*** |
| 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 "sd-bus.h" |
| #include "sd-netlink.h" |
| |
| #include "af-list.h" |
| #include "alloc-util.h" |
| #include "bus-error.h" |
| #include "bus-util.h" |
| #include "escape.h" |
| #include "gcrypt-util.h" |
| #include "in-addr-util.h" |
| #include "netlink-util.h" |
| #include "pager.h" |
| #include "parse-util.h" |
| #include "resolved-def.h" |
| #include "resolved-dns-packet.h" |
| #include "strv.h" |
| #include "terminal-util.h" |
| |
| #define DNS_CALL_TIMEOUT_USEC (90*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 = 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, |
| 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_(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; |
| 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, |
| &error, |
| &link_info); |
| if (r < 0) { |
| log_error_errno(r, "Failed to get link data for %i: %s", ifindex, bus_error_message(&error, r)); |
| 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) }, |
| {} |
| }; |
| |
| _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
| char **i; |
| int r; |
| |
| assert(bus); |
| assert(empty_line); |
| |
| r = bus_map_all_properties(bus, |
| "org.freedesktop.resolve1", |
| "/org/freedesktop/resolve1", |
| property_map, |
| &error, |
| &global_info); |
| if (r < 0) { |
| log_error_errno(r, "Failed to get global data: %s", bus_error_message(&error, r)); |
| 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\nmdns\nmnds-ipv4\nmdns-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 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; |
| } |
| |
| 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; |
| } |