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Diffstat (limited to 'src/resolve-host/resolve-host.c')
-rw-r--r--src/resolve-host/resolve-host.c449
1 files changed, 386 insertions, 63 deletions
diff --git a/src/resolve-host/resolve-host.c b/src/resolve-host/resolve-host.c
index 0f154d9798..54a060ea5a 100644
--- a/src/resolve-host/resolve-host.c
+++ b/src/resolve-host/resolve-host.c
@@ -33,16 +33,24 @@
#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 int arg_type = 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_resolve_service = false;
+
+static enum {
+ MODE_RESOLVE_HOST,
+ MODE_RESOLVE_RECORD,
+ MODE_RESOLVE_SERVICE,
+ MODE_STATISTICS,
+ MODE_RESET_STATISTICS,
+} arg_mode = MODE_RESOLVE_HOST;
static void print_source(uint64_t flags, usec_t rtt) {
char rtt_str[FORMAT_TIMESTAMP_MAX];
@@ -56,10 +64,12 @@ static void print_source(uint64_t flags, usec_t rtt) {
fputs("\n-- Information acquired via", stdout);
if (flags != 0)
- printf(" protocol%s%s%s",
+ 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_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));
@@ -320,8 +330,7 @@ static int parse_address(const char *s, int *family, union in_addr_union *addres
return 0;
}
-static int resolve_record(sd_bus *bus, const char *name) {
-
+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] = "";
@@ -335,7 +344,7 @@ static int resolve_record(sd_bus *bus, const char *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(arg_class), dns_type_to_string(arg_type), isempty(ifname) ? "*" : ifname);
+ 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,
@@ -347,8 +356,7 @@ static int resolve_record(sd_bus *bus, const char *name) {
if (r < 0)
return bus_log_create_error(r);
- assert((uint16_t) arg_type == arg_type);
- r = sd_bus_message_append(req, "isqqt", arg_ifindex, name, arg_class, arg_type, arg_flags);
+ r = sd_bus_message_append(req, "isqqt", arg_ifindex, name, class, type, arg_flags);
if (r < 0)
return bus_log_create_error(r);
@@ -369,7 +377,7 @@ static int resolve_record(sd_bus *bus, const char *name) {
while ((r = sd_bus_message_enter_container(reply, 'r', "iqqay")) > 0) {
_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
- _cleanup_free_ char *s = NULL;
+ const char *s;
uint16_t c, t;
int ifindex;
const void *d;
@@ -399,17 +407,13 @@ static int resolve_record(sd_bus *bus, const char *name) {
if (r < 0)
return log_oom();
- r = dns_packet_read_rr(p, &rr, NULL);
- if (r < 0) {
- log_error("Failed to parse RR.");
- return r;
- }
+ r = dns_packet_read_rr(p, &rr, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse RR: %m");
- r = dns_resource_record_to_string(rr, &s);
- if (r < 0) {
- log_error("Failed to format RR.");
- return r;
- }
+ s = dns_resource_record_to_string(rr);
+ if (!s)
+ return log_oom();
ifname[0] = 0;
if (ifindex > 0 && !if_indextoname(ifindex, ifname))
@@ -439,6 +443,127 @@ static int resolve_record(sd_bus *bus, const char *name) {
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 (type == 0)
+ type = arg_type;
+ if (type == 0)
+ type = DNS_TYPE_A;
+
+ if (class == 0)
+ class = arg_class;
+ if (class == 0)
+ class = DNS_CLASS_IN;
+
+ 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;
@@ -640,6 +765,141 @@ static int resolve_service(sd_bus *bus, const char *name, const char *type, cons
return 0;
}
+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%s\n"
+ " Secure RRsets: %" PRIu64 "\n"
+ " Insecure RRsets: %" PRIu64 "\n"
+ " Bogus RRsets: %" PRIu64 "\n"
+ "Indeterminate RRsets: %" 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_dns_types(void) {
int i;
const char *t;
@@ -674,7 +934,7 @@ static void help(void) {
" --version Show package version\n"
" -4 Resolve IPv4 addresses\n"
" -6 Resolve IPv6 addresses\n"
- " -i INTERFACE Look on interface\n"
+ " -i --interface=INTERFACE Look on interface\n"
" -p --protocol=PROTOCOL Look via protocol\n"
" -t --type=TYPE Query RR with DNS type\n"
" -c --class=CLASS Query RR with DNS class\n"
@@ -684,6 +944,8 @@ static void help(void) {
" --cname=BOOL Do [not] follow CNAME redirects\n"
" --search=BOOL Do [not] use search domains\n"
" --legend=BOOL Do [not] print column headers\n"
+ " --statistics Show resolver statistics\n"
+ " --reset-statistics Reset resolver statistics\n"
, program_invocation_short_name, program_invocation_short_name);
}
@@ -696,20 +958,25 @@ static int parse_argv(int argc, char *argv[]) {
ARG_SERVICE_ADDRESS,
ARG_SERVICE_TXT,
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 },
- { "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 },
- { "search", required_argument, NULL, ARG_SEARCH },
+ { "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 },
+ { "search", required_argument, NULL, ARG_SEARCH },
+ { "statistics", no_argument, NULL, ARG_STATISTICS, },
+ { "reset-statistics", no_argument, NULL, ARG_RESET_STATISTICS },
{}
};
@@ -758,13 +1025,15 @@ static int parse_argv(int argc, char *argv[]) {
return 0;
}
- arg_type = dns_type_from_string(optarg);
- if (arg_type < 0) {
+ r = dns_type_from_string(optarg);
+ if (r < 0) {
log_error("Failed to parse RR record type %s", optarg);
- return arg_type;
+ return r;
}
- assert(arg_type > 0 && (uint16_t) arg_type == arg_type);
+ arg_type = (uint16_t) r;
+ assert((int) arg_type == r);
+ arg_mode = MODE_RESOLVE_RECORD;
break;
case 'c':
@@ -773,11 +1042,13 @@ static int parse_argv(int argc, char *argv[]) {
return 0;
}
- r = dns_class_from_string(optarg, &arg_class);
+ 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;
@@ -806,7 +1077,7 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_SERVICE:
- arg_resolve_service = true;
+ arg_mode = MODE_RESOLVE_SERVICE;
break;
case ARG_CNAME:
@@ -849,6 +1120,14 @@ static int parse_argv(int argc, char *argv[]) {
arg_flags &= ~SD_RESOLVED_NO_SEARCH;
break;
+ case ARG_STATISTICS:
+ arg_mode = MODE_STATISTICS;
+ break;
+
+ case ARG_RESET_STATISTICS:
+ arg_mode = MODE_RESET_STATISTICS;
+ break;
+
case '?':
return -EINVAL;
@@ -861,7 +1140,7 @@ static int parse_argv(int argc, char *argv[]) {
return -EINVAL;
}
- if (arg_type != 0 && arg_resolve_service) {
+ if (arg_type != 0 && arg_mode != MODE_RESOLVE_RECORD) {
log_error("--service and --type= may not be combined.");
return -EINVAL;
}
@@ -869,6 +1148,9 @@ static int parse_argv(int argc, char *argv[]) {
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 */;
}
@@ -883,20 +1165,61 @@ int main(int argc, char **argv) {
if (r <= 0)
goto finish;
- if (optind >= argc) {
- log_error("No arguments passed");
- r = -EINVAL;
- goto finish;
- }
-
r = sd_bus_open_system(&bus);
if (r < 0) {
log_error_errno(r, "sd_bus_open_system: %m");
goto finish;
}
- if (arg_resolve_service) {
+ 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;
@@ -914,27 +1237,27 @@ int main(int argc, char **argv) {
goto finish;
}
- goto finish;
- }
+ break;
- while (argv[optind]) {
- int family, ifindex, k;
- union in_addr_union a;
-
- if (arg_type != 0)
- k = resolve_record(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]);
+ case MODE_STATISTICS:
+ if (argc > optind) {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
}
- if (r == 0)
- r = k;
+ r = show_statistics(bus);
+ break;
+
+ case MODE_RESET_STATISTICS:
+ if (argc > optind) {
+ log_error("Too many arguments.");
+ r = -EINVAL;
+ goto finish;
+ }
- optind++;
+ r = reset_statistics(bus);
+ break;
}
finish:
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-15 18:08:14 +0000