From 8231d17032fdd535e58c5aead8eae3f6cbc048b5 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Thu, 9 Jun 2016 03:13:06 -0400 Subject: ./move.sh --- src/grp-resolve/systemd-resolved/resolve-tool.c | 1484 +++++++++++++++++++++++ 1 file changed, 1484 insertions(+) create mode 100644 src/grp-resolve/systemd-resolved/resolve-tool.c (limited to 'src/grp-resolve/systemd-resolved/resolve-tool.c') diff --git a/src/grp-resolve/systemd-resolved/resolve-tool.c b/src/grp-resolve/systemd-resolved/resolve-tool.c new file mode 100644 index 0000000000..fbf7b0e4f6 --- /dev/null +++ b/src/grp-resolve/systemd-resolved/resolve-tool.c @@ -0,0 +1,1484 @@ +/*** + 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 . +***/ + +#include +#include + +#include + +#include "af-list.h" +#include "alloc-util.h" +#include "bus-error.h" +#include "bus-util.h" +#include "escape.h" +#include "in-addr-util.h" +#include "gcrypt-util.h" +#include "parse-util.h" +#include "resolved-def.h" +#include "resolved-dns-packet.h" +#include "terminal-util.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; + +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, +} 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_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%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_to_string(family, address, &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 parse_address(const char *s, int *family, union in_addr_union *address, int *ifindex) { + const char *percent, *a; + int ifi = 0; + int r; + + percent = strchr(s, '%'); + if (percent) { + if (parse_ifindex(percent+1, &ifi) < 0) { + ifi = if_nametoindex(percent+1); + if (ifi <= 0) + return -EINVAL; + } + + a = strndupa(s, percent - s); + } else + a = s; + + r = in_addr_from_string_auto(a, family, address); + if (r < 0) + return r; + + *ifindex = ifi; + 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) { + _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) { + 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) { + 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); + +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); + + if (isempty(name)) + name = NULL; + if (isempty(type)) + type = NULL; + + 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); + + c = 0; + 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); + 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, "ssst", &canonical_name, &canonical_type, &canonical_domain, &flags); + if (r < 0) + return bus_log_parse_error(r); + + if (isempty(canonical_name)) + canonical_name = NULL; + if (isempty(canonical_type)) + canonical_type = NULL; + + 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_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); +} + +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); +} + +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 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) { + int i; + const char *t; + + 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) { + int i; + const char *t; + + 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 resource records, and services.\n\n" + " -h --help Show this help\n" + " --version Show package version\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" + , 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, + }; + + 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 }, + {} + }; + + 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 '?': + 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 = parse_address(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); + 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; + } + +finish: + return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE; +} -- cgit v1.2.3-54-g00ecf