src/nss-mymachines/nss-mymachines.c

cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering/***
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  This file is part of systemd.
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  Copyright 2014 Lennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  systemd is free software; you can redistribute it and/or modify it
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  under the terms of the GNU Lesser General Public License as published by
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  (at your option) any later version.
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  systemd is distributed in the hope that it will be useful, but
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  Lesser General Public License for more details.
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  You should have received a copy of the GNU Lesser General Public License
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering***/
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering#include <netdb.h>
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <nss.h>
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering#include "sd-bus.h"
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering#include "sd-login.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering
b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering#include "alloc-util.h"
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering#include "bus-common-errors.h"
25300b5a1fcf54674a69d0f4ab08925be00b0227Lennart Poettering#include "hostname-util.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "in-addr-util.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "macro.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "nss-util.h"
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering#include "signal-util.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "string-util.h"
b1d4f8e154bf61b5de1b27461ef8e9c8c5e838a1Lennart Poettering#include "user-util.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "util.h"
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart PoetteringNSS_GETHOSTBYNAME_PROTOTYPES(mymachines);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart PoetteringNSS_GETPW_PROTOTYPES(mymachines);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart PoetteringNSS_GETGR_PROTOTYPES(mymachines);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering#define HOST_UID_LIMIT ((uid_t) UINT32_C(0x10000))
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering#define HOST_GID_LIMIT ((gid_t) UINT32_C(0x10000))
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poetteringstatic int count_addresses(sd_bus_message *m, int af, unsigned *ret) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        unsigned c = 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        int r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(m);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(ret);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
3a6fb33c54bc64398e0af1c9d7c74a6b614a849dLennart Poettering        while ((r = sd_bus_message_enter_container(m, 'r', "iay")) > 0) {
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering                int family;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering                r = sd_bus_message_read(m, "i", &family);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        return r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = sd_bus_message_skip(m, "ay");
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        return r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = sd_bus_message_exit_container(m);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        return r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (af != AF_UNSPEC && family != af)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        continue;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                c ++;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                return r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_message_rewind(m, false);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                return r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        *ret = c;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        return 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering}
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poetteringenum nss_status _nss_mymachines_gethostbyname4_r(
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                const char *name,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                struct gaih_addrtuple **pat,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                char *buffer, size_t buflen,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                int *errnop, int *h_errnop,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                int32_t *ttlp) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        struct gaih_addrtuple *r_tuple, *r_tuple_first = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_message_unrefp) sd_bus_message* reply = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
634af5665fda8776d22624d947c8de830e30a874Lennart Poettering        _cleanup_free_ int *ifindices = NULL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        _cleanup_free_ char *class = NULL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        size_t l, ms, idx;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        unsigned i = 0, c = 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        char *r_name;
634af5665fda8776d22624d947c8de830e30a874Lennart Poettering        int n_ifindices, r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering        BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(name);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(pat);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(buffer);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(errnop);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(h_errnop);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_machine_get_class(name, &class);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (!streq(class, "container")) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = -ENOTTY;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
634af5665fda8776d22624d947c8de830e30a874Lennart Poettering        n_ifindices = sd_machine_get_ifindices(name, &ifindices);
634af5665fda8776d22624d947c8de830e30a874Lennart Poettering        if (n_ifindices < 0) {
634af5665fda8776d22624d947c8de830e30a874Lennart Poettering                r = n_ifindices;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_open_system(&bus);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_call_method(bus,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "org.freedesktop.machine1",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "/org/freedesktop/machine1",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "org.freedesktop.machine1.Manager",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "GetMachineAddresses",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               NULL,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               &reply,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "s", name);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering        r = sd_bus_message_enter_container(reply, 'a', "(iay)");
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = count_addresses(reply, AF_UNSPEC, &c);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (c <= 0) {
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering                *errnop = ESRCH;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *h_errnop = HOST_NOT_FOUND;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                return NSS_STATUS_NOTFOUND;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        l = strlen(name);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        ms = ALIGN(l+1) + ALIGN(sizeof(struct gaih_addrtuple)) * c;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (buflen < ms) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *errnop = ENOMEM;
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering                *h_errnop = TRY_AGAIN;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                return NSS_STATUS_TRYAGAIN;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        /* First, append name */
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r_name = buffer;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        memcpy(r_name, name, l+1);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        idx = ALIGN(l+1);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        /* Second, append addresses */
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r_tuple_first = (struct gaih_addrtuple*) (buffer + idx);
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering        while ((r = sd_bus_message_enter_container(reply, 'r', "iay")) > 0) {
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering                int family;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                const void *a;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                size_t sz;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering                r = sd_bus_message_read(reply, "i", &family);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = sd_bus_message_read_array(reply, 'y', &a, &sz);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = sd_bus_message_exit_container(reply);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering                if (!IN_SET(family, AF_INET, AF_INET6)) {
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering                        r = -EAFNOSUPPORT;
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering                        goto fail;
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering                }
555bd6e95bf2b469306d9cd86e126c0122d0895bLennart Poettering
9d485985338a46b8cb1acdf1af6c1eb2e88acfeeLennart Poettering                if (sz != FAMILY_ADDRESS_SIZE(family)) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        r = -EINVAL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r_tuple = (struct gaih_addrtuple*) (buffer + idx);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r_tuple->next = i == c-1 ? NULL : (struct gaih_addrtuple*) ((char*) r_tuple + ALIGN(sizeof(struct gaih_addrtuple)));
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r_tuple->name = r_name;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r_tuple->family = family;
634af5665fda8776d22624d947c8de830e30a874Lennart Poettering                r_tuple->scopeid = n_ifindices == 1 ? ifindices[0] : 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                memcpy(r_tuple->addr, a, sz);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                idx += ALIGN(sizeof(struct gaih_addrtuple));
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                i++;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(i == c);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_message_exit_container(reply);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(idx == ms);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (*pat)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                **pat = *r_tuple_first;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        else
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *pat = r_tuple_first;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (ttlp)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *ttlp = 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        /* Explicitly reset all error variables */
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        *errnop = 0;
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        *h_errnop = NETDB_SUCCESS;
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        h_errno = 0;
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        return NSS_STATUS_SUCCESS;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poetteringfail:
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        *errnop = -r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        *h_errnop = NO_DATA;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        return NSS_STATUS_UNAVAIL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering}
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poetteringenum nss_status _nss_mymachines_gethostbyname3_r(
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                const char *name,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                int af,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                struct hostent *result,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                char *buffer, size_t buflen,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                int *errnop, int *h_errnop,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                int32_t *ttlp,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                char **canonp) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_message_unrefp) sd_bus_message* reply = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        _cleanup_free_ char *class = NULL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        unsigned c = 0, i = 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        char *r_name, *r_aliases, *r_addr, *r_addr_list;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        size_t l, idx, ms, alen;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        int r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering        BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(name);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(result);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(buffer);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(errnop);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(h_errnop);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (af == AF_UNSPEC)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                af = AF_INET;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (af != AF_INET && af != AF_INET6) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = -EAFNOSUPPORT;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_machine_get_class(name, &class);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (!streq(class, "container")) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = -ENOTTY;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_open_system(&bus);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_call_method(bus,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "org.freedesktop.machine1",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "/org/freedesktop/machine1",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "org.freedesktop.machine1.Manager",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "GetMachineAddresses",
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               NULL,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               &reply,
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                               "s", name);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering        r = sd_bus_message_enter_container(reply, 'a', "(iay)");
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = count_addresses(reply, af, &c);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (c <= 0) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *errnop = ENOENT;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *h_errnop = HOST_NOT_FOUND;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                return NSS_STATUS_NOTFOUND;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
9d485985338a46b8cb1acdf1af6c1eb2e88acfeeLennart Poettering        alen = FAMILY_ADDRESS_SIZE(af);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        l = strlen(name);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
66a16e7e9fc501d371b57cbe2ae5d130fe930c6dThomas Hindoe Paaboel Andersen        ms = ALIGN(l+1) + c * ALIGN(alen) + (c+2) * sizeof(char*);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (buflen < ms) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *errnop = ENOMEM;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *h_errnop = NO_RECOVERY;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                return NSS_STATUS_TRYAGAIN;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        /* First, append name */
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r_name = buffer;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        memcpy(r_name, name, l+1);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        idx = ALIGN(l+1);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        /* Second, create aliases array */
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r_aliases = buffer + idx;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        ((char**) r_aliases)[0] = NULL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        idx += sizeof(char*);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        /* Third, append addresses */
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r_addr = buffer + idx;
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering        while ((r = sd_bus_message_enter_container(reply, 'r', "iay")) > 0) {
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering                int family;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                const void *a;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                size_t sz;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering                r = sd_bus_message_read(reply, "i", &family);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = sd_bus_message_read_array(reply, 'y', &a, &sz);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                r = sd_bus_message_exit_container(reply);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (family != af)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        continue;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                if (sz != alen) {
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        r = -EINVAL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                        goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                memcpy(r_addr + i*ALIGN(alen), a, alen);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                i++;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        }
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(i == c);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        idx += c * ALIGN(alen);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r = sd_bus_message_exit_container(reply);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (r < 0)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                goto fail;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        /* Third, append address pointer array */
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        r_addr_list = buffer + idx;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        for (i = 0; i < c; i++)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                ((char**) r_addr_list)[i] = r_addr + i*ALIGN(alen);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        ((char**) r_addr_list)[i] = NULL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        idx += (c+1) * sizeof(char*);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        assert(idx == ms);
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        result->h_name = r_name;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        result->h_aliases = (char**) r_aliases;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        result->h_addrtype = af;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        result->h_length = alen;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        result->h_addr_list = (char**) r_addr_list;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (ttlp)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *ttlp = 0;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        if (canonp)
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering                *canonp = r_name;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        /* Explicitly reset all error variables */
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        *errnop = 0;
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        *h_errnop = NETDB_SUCCESS;
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering        h_errno = 0;
e70df46b9721a3d025e7a0b4ffb5893cbde5e55dLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        return NSS_STATUS_SUCCESS;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poetteringfail:
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        *errnop = -r;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        *h_errnop = NO_DATA;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering        return NSS_STATUS_UNAVAIL;
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering}
cabb0bc6b1a4ec57e108dc99364687d7c4f9670fLennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart PoetteringNSS_GETHOSTBYNAME_FALLBACKS(mymachines);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringenum nss_status _nss_mymachines_getpwnam_r(
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                const char *name,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                struct passwd *pwd,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                char *buffer, size_t buflen,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                int *errnop) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_message_unrefp) sd_bus_message* reply = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        const char *p, *e, *machine;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        uint32_t mapped;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        uid_t uid;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        size_t l;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        int r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering        BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        assert(name);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        assert(pwd);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        p = startswith(name, "vu-");
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (!p)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        e = strrchr(p, '-');
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (!e || e == p)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
cb31827d62066a04b02111df3052949fda4b6888Zbigniew Jędrzejewski-Szmek        if (e - p > HOST_NAME_MAX - 1) /* -1 for the last dash */
cb31827d62066a04b02111df3052949fda4b6888Zbigniew Jędrzejewski-Szmek                goto not_found;
cb31827d62066a04b02111df3052949fda4b6888Zbigniew Jędrzejewski-Szmek
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = parse_uid(e + 1, &uid);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        machine = strndupa(p, e - p);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (!machine_name_is_valid(machine))
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_open_system(&bus);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_call_method(bus,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "/org/freedesktop/machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1.Manager",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "MapFromMachineUser",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &error,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &reply,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "su",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               machine, (uint32_t) uid);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_USER_MAPPING))
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                        goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_message_read(reply, "u", &mapped);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        /* Refuse to work if the mapped address is in the host UID range, or if there was no mapping at all. */
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        if (mapped < HOST_UID_LIMIT || mapped == uid)
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering                goto not_found;
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        l = strlen(name);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (buflen < l+1) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                *errnop = ENOMEM;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                return NSS_STATUS_TRYAGAIN;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        memcpy(buffer, name, l+1);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_name = buffer;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_uid = mapped;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_gid = 65534; /* nobody */
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_gecos = buffer;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_passwd = (char*) "*"; /* locked */
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_dir = (char*) "/";
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_shell = (char*) "/sbin/nologin";
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_SUCCESS;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringnot_found:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_NOTFOUND;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringfail:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = -r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_UNAVAIL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering}
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringenum nss_status _nss_mymachines_getpwuid_r(
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                uid_t uid,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                struct passwd *pwd,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                char *buffer, size_t buflen,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                int *errnop) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_message_unrefp) sd_bus_message* reply = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        const char *machine, *object;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        uint32_t mapped;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        int r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering        BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering
c077529ba6852192c464772ce907670850210dfeLennart Poettering        if (!uid_is_valid(uid)) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                r = -EINVAL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        /* We consider all uids < 65536 host uids */
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        if (uid < HOST_UID_LIMIT)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_open_system(&bus);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_call_method(bus,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "/org/freedesktop/machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1.Manager",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "MapToMachineUser",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &error,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &reply,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "u",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               (uint32_t) uid);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_USER_MAPPING))
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                        goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_message_read(reply, "sou", &machine, &object, &mapped);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        if (mapped == uid)
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering                goto not_found;
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (snprintf(buffer, buflen, "vu-%s-" UID_FMT, machine, (uid_t) mapped) >= (int) buflen) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                *errnop = ENOMEM;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                return NSS_STATUS_TRYAGAIN;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_name = buffer;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_uid = uid;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_gid = 65534; /* nobody */
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_gecos = buffer;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_passwd = (char*) "*"; /* locked */
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_dir = (char*) "/";
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        pwd->pw_shell = (char*) "/sbin/nologin";
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_SUCCESS;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringnot_found:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_NOTFOUND;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringfail:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = -r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_UNAVAIL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering}
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringenum nss_status _nss_mymachines_getgrnam_r(
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                const char *name,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                struct group *gr,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                char *buffer, size_t buflen,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                int *errnop) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_message_unrefp) sd_bus_message* reply = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        const char *p, *e, *machine;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        uint32_t mapped;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        uid_t gid;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        size_t l;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        int r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering        BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        assert(name);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        assert(gr);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        p = startswith(name, "vg-");
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (!p)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        e = strrchr(p, '-');
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (!e || e == p)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
cb31827d62066a04b02111df3052949fda4b6888Zbigniew Jędrzejewski-Szmek        if (e - p > HOST_NAME_MAX - 1)  /* -1 for the last dash */
cb31827d62066a04b02111df3052949fda4b6888Zbigniew Jędrzejewski-Szmek                goto not_found;
cb31827d62066a04b02111df3052949fda4b6888Zbigniew Jędrzejewski-Szmek
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = parse_gid(e + 1, &gid);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        machine = strndupa(p, e - p);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (!machine_name_is_valid(machine))
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_open_system(&bus);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_call_method(bus,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "/org/freedesktop/machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1.Manager",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "MapFromMachineGroup",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &error,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &reply,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "su",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               machine, (uint32_t) gid);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_GROUP_MAPPING))
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                        goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_message_read(reply, "u", &mapped);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        if (mapped < HOST_GID_LIMIT || mapped == gid)
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering                goto not_found;
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        l = sizeof(char*) + strlen(name) + 1;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (buflen < l) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                *errnop = ENOMEM;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                return NSS_STATUS_TRYAGAIN;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        memzero(buffer, sizeof(char*));
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        strcpy(buffer + sizeof(char*), name);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_name = buffer + sizeof(char*);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_gid = gid;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_passwd = (char*) "*"; /* locked */
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_mem = (char**) buffer;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_SUCCESS;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringnot_found:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_NOTFOUND;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringfail:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = -r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_UNAVAIL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering}
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringenum nss_status _nss_mymachines_getgrgid_r(
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                gid_t gid,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                struct group *gr,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                char *buffer, size_t buflen,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                int *errnop) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_message_unrefp) sd_bus_message* reply = NULL;
4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        const char *machine, *object;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        uint32_t mapped;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        int r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering        BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
0c5eb0562abec6f845f07c30b2ad2515900ec1e5Lennart Poettering
c077529ba6852192c464772ce907670850210dfeLennart Poettering        if (!gid_is_valid(gid)) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                r = -EINVAL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        /* We consider all gids < 65536 host gids */
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        if (gid < HOST_GID_LIMIT)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_open_system(&bus);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_call_method(bus,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "/org/freedesktop/machine1",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "org.freedesktop.machine1.Manager",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "MapToMachineGroup",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &error,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               &reply,
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               "u",
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                               (uint32_t) gid);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_GROUP_MAPPING))
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                        goto not_found;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        r = sd_bus_message_read(reply, "sou", &machine, &object, &mapped);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (r < 0)
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                goto fail;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering        if (mapped == gid)
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering                goto not_found;
cf3bdcfeba48ffef71f1f59e092c4fb9275dcb3aLennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (buflen < sizeof(char*) + 1) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                *errnop = ENOMEM;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                return NSS_STATUS_TRYAGAIN;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        memzero(buffer, sizeof(char*));
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        if (snprintf(buffer + sizeof(char*), buflen - sizeof(char*), "vg-%s-" GID_FMT, machine, (gid_t) mapped) >= (int) buflen) {
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                *errnop = ENOMEM;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering                return NSS_STATUS_TRYAGAIN;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        }
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_name = buffer + sizeof(char*);
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_gid = gid;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_passwd = (char*) "*"; /* locked */
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        gr->gr_mem = (char**) buffer;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_SUCCESS;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringnot_found:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = 0;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_NOTFOUND;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poetteringfail:
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        *errnop = -r;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering        return NSS_STATUS_UNAVAIL;
c01ff965b48bb9693dcd77cbc748b5d8676766b0Lennart Poettering}