diff options
Diffstat (limited to 'src/resolve-host')
l--------- | src/resolve-host/Makefile | 1 | ||||
-rw-r--r-- | src/resolve-host/resolve-host.c | 635 |
2 files changed, 0 insertions, 636 deletions
diff --git a/src/resolve-host/Makefile b/src/resolve-host/Makefile deleted file mode 120000 index d0b0e8e008..0000000000 --- a/src/resolve-host/Makefile +++ /dev/null @@ -1 +0,0 @@ -../Makefile
\ No newline at end of file diff --git a/src/resolve-host/resolve-host.c b/src/resolve-host/resolve-host.c deleted file mode 100644 index 0edba415b6..0000000000 --- a/src/resolve-host/resolve-host.c +++ /dev/null @@ -1,635 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - 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 <net/if.h> -#include <getopt.h> - -#include "sd-bus.h" -#include "bus-util.h" -#include "bus-error.h" -#include "in-addr-util.h" -#include "af-list.h" -#include "build.h" - -#include "resolved-dns-packet.h" -#include "resolved-def.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_class = 0; -static bool arg_legend = true; -static uint64_t arg_flags = 0; - -static void print_source(int ifindex, uint64_t flags) { - - if (!arg_legend) - return; - - if (ifindex <= 0 && flags == 0) - return; - - fputs("\n-- Information acquired via", stdout); - - if (flags != 0) - printf(" protocol%s%s%s", - flags & SD_RESOLVED_DNS ? " DNS" :"", - flags & SD_RESOLVED_LLMNR_IPV4 ? " LLMNR/IPv4" : "", - flags & SD_RESOLVED_LLMNR_IPV6 ? " LLMNR/IPv6" : ""); - - if (ifindex > 0) { - char ifname[IF_NAMESIZE] = ""; - printf(" interface %s", strna(if_indextoname(ifindex, ifname))); - } - - fputc('.', stdout); - fputc('\n', stdout); -} - -static int resolve_host(sd_bus *bus, const char *name) { - - _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL; - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - const char *canonical = NULL; - unsigned c = 0; - int r, ifindex; - uint64_t flags; - - assert(name); - - log_debug("Resolving %s (family %s, ifindex %i).", name, af_to_name(arg_family) ?: "*", arg_ifindex); - - 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); - - 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; - } - - r = sd_bus_message_read(reply, "i", &ifindex); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_message_enter_container(reply, 'a', "(iay)"); - if (r < 0) - return bus_log_parse_error(r); - - while ((r = sd_bus_message_enter_container(reply, 'r', "iay")) > 0) { - const void *a; - int family; - size_t sz; - _cleanup_free_ char *pretty = NULL; - char ifname[IF_NAMESIZE] = ""; - - r = sd_bus_message_read(reply, "i", &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"); - continue; - } - - if (ifindex > 0) { - char *t; - - t = if_indextoname(ifindex, ifname); - if (!t) { - log_error("Failed to resolve interface name for index %i", ifindex); - continue; - } - } - - r = in_addr_to_string(family, a, &pretty); - if (r < 0) { - log_error_errno(r, "%s: failed to print address: %m", name); - continue; - } - - 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(ifindex, flags); - - return 0; -} - -static int resolve_address(sd_bus *bus, int family, const union in_addr_union *address, int ifindex) { - _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL; - _cleanup_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; - const char *n; - int r; - - assert(bus); - assert(IN_SET(family, AF_INET, AF_INET6)); - assert(address); - - r = in_addr_to_string(family, address, &pretty); - if (r < 0) - return log_oom(); - - if (ifindex > 0) { - char *t; - - t = if_indextoname(ifindex, ifname); - if (!t) { - log_error("Failed to resolve interface name for index %i", ifindex); - return -errno; - } - } - - 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_set_auto_start(req, false); - 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); - - 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; - } - - r = sd_bus_message_read(reply, "i", &ifindex); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_message_enter_container(reply, 'a', "s"); - if (r < 0) - return bus_log_create_error(r); - - while ((r = sd_bus_message_read(reply, "s", &n)) > 0) { - - printf("%*s%s%s%s %s\n", - (int) strlen(pretty), c == 0 ? pretty : "", - isempty(ifname) ? "" : "%", 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(ifindex, flags); - - 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) { - r = safe_atoi(percent+1, &ifi); - if (r < 0 || 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 resolve_record(sd_bus *bus, const char *name) { - - _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL; - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - unsigned n = 0; - uint64_t flags; - int r, ifindex; - - assert(name); - - log_debug("Resolving %s %s %s.", name, dns_class_to_string(arg_class), dns_type_to_string(arg_type)); - - 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_set_auto_start(req, false); - 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); - if (r < 0) - return bus_log_create_error(r); - - 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; - } - - r = sd_bus_message_read(reply, "i", &ifindex); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_message_enter_container(reply, 'a', "(qqay)"); - if (r < 0) - return bus_log_parse_error(r); - - while ((r = sd_bus_message_enter_container(reply, 'r', "qqay")) > 0) { - _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; - _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL; - _cleanup_free_ char *s = NULL; - uint16_t c, t; - const void *d; - size_t l; - - r = sd_bus_message_read(reply, "qq", &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); - - r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0); - if (r < 0) - return log_oom(); - - r = dns_packet_append_blob(p, d, l, NULL); - 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_resource_record_to_string(rr, &s); - if (r < 0) { - log_error("Failed to format RR."); - return r; - } - - printf("%s\n", s); - 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(ifindex, flags); - - return 0; -} - -static void help_dns_types(void) { - int i; - const char *t; - - if (arg_legend) - puts("Known dns 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 classes:"); - for (i = 0; i < _DNS_CLASS_MAX; i++) { - t = dns_class_to_string(i); - if (t) - puts(t); - } -} - -static void help(void) { - printf("%s [OPTIONS...]\n\n" - "Resolve IPv4 or IPv6 addresses.\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 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" - " --legend[=BOOL] Do [not] print column headers\n" - , program_invocation_short_name); -} - -static int parse_argv(int argc, char *argv[]) { - enum { - ARG_VERSION = 0x100, - ARG_LEGEND, - }; - - 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", optional_argument, NULL, ARG_LEGEND }, - { "protocol", required_argument, NULL, 'p' }, - {} - }; - - 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: - puts(PACKAGE_STRING); - puts(SYSTEMD_FEATURES); - return 0 /* done */; - - case '4': - arg_family = AF_INET; - break; - - case '6': - arg_family = AF_INET6; - break; - - case 'i': - arg_ifindex = if_nametoindex(optarg); - if (arg_ifindex <= 0) - return log_error_errno(errno, "Unknown interfaces %s: %m", optarg); - break; - - case 't': - if (streq(optarg, "help")) { - help_dns_types(); - return 0; - } - - arg_type = dns_type_from_string(optarg); - if (arg_type < 0) { - log_error("Failed to parse RR record type %s", optarg); - return arg_type; - } - assert(arg_type > 0 && (uint16_t) arg_type == arg_type); - - break; - - case 'c': - if (streq(optarg, "help")) { - help_dns_classes(); - return 0; - } - - r = dns_class_from_string(optarg, &arg_class); - if (r < 0) { - log_error("Failed to parse RR record class %s", optarg); - return r; - } - - break; - - case ARG_LEGEND: - if (optarg) { - r = parse_boolean(optarg); - if (r < 0) { - log_error("Failed to parse --legend= argument"); - return r; - } - - arg_legend = !!r; - } else - arg_legend = false; - break; - - case 'p': - 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 '?': - 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_class == 0) - arg_class = DNS_CLASS_IN; - - return 1 /* work to do */; -} - -int main(int argc, char **argv) { - _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL; - int r; - - log_parse_environment(); - log_open(); - - r = parse_argv(argc, 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; - } - - 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]); - } - - if (r == 0) - r = k; - - optind++; - } - -finish: - return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE; -} |