Remove src/nss-myhostname

1 files changed, 0 insertions, 516 deletions

diff --git a/src/nss-myhostname/nss-myhostname.c b/src/nss-myhostname/nss-myhostname.c
deleted file mode 100644
index fed76c62e..000000000
--- a/src/nss-myhostname/nss-myhostname.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2008-2011 Lennart Poettering
-
-  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 <nss.h>
-#include <netdb.h>
-#include <errno.h>
-#include <string.h>
-#include <net/if.h>
-#include <stdlib.h>
-
-#include "local-addresses.h"
-#include "macro.h"
-#include "nss-util.h"
-#include "util.h"
-
-/* We use 127.0.0.2 as IPv4 address. This has the advantage over
- * 127.0.0.1 that it can be translated back to the local hostname. For
- * IPv6 we use ::1 which unfortunately will not translate back to the
- * hostname but instead something like "localhost" or so. */
-
-#define LOCALADDRESS_IPV4 (htonl(0x7F000002))
-#define LOCALADDRESS_IPV6 &in6addr_loopback
-#define LOOPBACK_INTERFACE "lo"
-
-NSS_GETHOSTBYNAME_PROTOTYPES(myhostname);
-NSS_GETHOSTBYADDR_PROTOTYPES(myhostname);
-
-static bool is_gateway(const char *hostname) {
-        assert(hostname);
-
-        return streq(hostname, "gateway") ||
-               streq(hostname, "gateway.");
-}
-
-enum nss_status _nss_myhostname_gethostbyname4_r(
-                const char *name,
-                struct gaih_addrtuple **pat,
-                char *buffer, size_t buflen,
-                int *errnop, int *h_errnop,
-                int32_t *ttlp) {
-
-        struct gaih_addrtuple *r_tuple, *r_tuple_prev = NULL;
-        _cleanup_free_ struct local_address *addresses = NULL;
-        _cleanup_free_ char *hn = NULL;
-        const char *canonical = NULL;
-        int n_addresses = 0, lo_ifi;
-        uint32_t local_address_ipv4;
-        struct local_address *a;
-        size_t l, idx, ms;
-        char *r_name;
-        unsigned n;
-
-        assert(name);
-        assert(pat);
-        assert(buffer);
-        assert(errnop);
-        assert(h_errnop);
-
-        if (is_localhost(name)) {
-                /* We respond to 'localhost', so that /etc/hosts
-                 * is optional */
-
-                canonical = "localhost";
-                local_address_ipv4 = htonl(INADDR_LOOPBACK);
-
-        } else if (is_gateway(name)) {
-
-                n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses);
-                if (n_addresses <= 0) {
-                        *errnop = ENOENT;
-                        *h_errnop = HOST_NOT_FOUND;
-                        return NSS_STATUS_NOTFOUND;
-                }
-
-                canonical = "gateway";
-
-        } else {
-                hn = gethostname_malloc();
-                if (!hn) {
-                        *errnop = ENOMEM;
-                        *h_errnop = NO_RECOVERY;
-                        return NSS_STATUS_TRYAGAIN;
-                }
-
-                /* We respond to our local host name, our our hostname suffixed with a single dot. */
-                if (!streq(name, hn) && !streq_ptr(startswith(name, hn), ".")) {
-                        *errnop = ENOENT;
-                        *h_errnop = HOST_NOT_FOUND;
-                        return NSS_STATUS_NOTFOUND;
-                }
-
-                n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses);
-                if (n_addresses < 0)
-                        n_addresses = 0;
-
-                canonical = hn;
-                local_address_ipv4 = LOCALADDRESS_IPV4;
-        }
-
-        /* If this call fails we fill in 0 as scope. Which is fine */
-        lo_ifi = n_addresses <= 0 ? if_nametoindex(LOOPBACK_INTERFACE) : 0;
-
-        l = strlen(canonical);
-        ms = ALIGN(l+1) + ALIGN(sizeof(struct gaih_addrtuple)) * (n_addresses > 0 ? n_addresses : 2);
-        if (buflen < ms) {
-                *errnop = ENOMEM;
-                *h_errnop = NO_RECOVERY;
-                return NSS_STATUS_TRYAGAIN;
-        }
-
-        /* First, fill in hostname */
-        r_name = buffer;
-        memcpy(r_name, canonical, l+1);
-        idx = ALIGN(l+1);
-
-        if (n_addresses <= 0) {
-                /* Second, fill in IPv6 tuple */
-                r_tuple = (struct gaih_addrtuple*) (buffer + idx);
-                r_tuple->next = r_tuple_prev;
-                r_tuple->name = r_name;
-                r_tuple->family = AF_INET6;
-                memcpy(r_tuple->addr, LOCALADDRESS_IPV6, 16);
-                r_tuple->scopeid = (uint32_t) lo_ifi;
-
-                idx += ALIGN(sizeof(struct gaih_addrtuple));
-                r_tuple_prev = r_tuple;
-
-                /* Third, fill in IPv4 tuple */
-                r_tuple = (struct gaih_addrtuple*) (buffer + idx);
-                r_tuple->next = r_tuple_prev;
-                r_tuple->name = r_name;
-                r_tuple->family = AF_INET;
-                *(uint32_t*) r_tuple->addr = local_address_ipv4;
-                r_tuple->scopeid = (uint32_t) lo_ifi;
-
-                idx += ALIGN(sizeof(struct gaih_addrtuple));
-                r_tuple_prev = r_tuple;
-        }
-
-        /* Fourth, fill actual addresses in, but in backwards order */
-        for (a = addresses + n_addresses - 1, n = 0; (int) n < n_addresses; n++, a--) {
-                r_tuple = (struct gaih_addrtuple*) (buffer + idx);
-                r_tuple->next = r_tuple_prev;
-                r_tuple->name = r_name;
-                r_tuple->family = a->family;
-                r_tuple->scopeid = a->ifindex;
-                memcpy(r_tuple->addr, &a->address, 16);
-
-                idx += ALIGN(sizeof(struct gaih_addrtuple));
-                r_tuple_prev = r_tuple;
-        }
-
-        /* Verify the size matches */
-        assert(idx == ms);
-
-        /* Nscd expects us to store the first record in **pat. */
-        if (*pat)
-                **pat = *r_tuple_prev;
-        else
-                *pat = r_tuple_prev;
-
-        if (ttlp)
-                *ttlp = 0;
-
-        /* Explicitly reset all error variables */
-        *errnop = 0;
-        *h_errnop = NETDB_SUCCESS;
-        h_errno = 0;
-
-        return NSS_STATUS_SUCCESS;
-}
-
-static enum nss_status fill_in_hostent(
-                const char *canonical, const char *additional,
-                int af,
-                struct local_address *addresses, unsigned n_addresses,
-                uint32_t local_address_ipv4,
-                struct hostent *result,
-                char *buffer, size_t buflen,
-                int *errnop, int *h_errnop,
-                int32_t *ttlp,
-                char **canonp) {
-
-        size_t l_canonical, l_additional, idx, ms, alen;
-        char *r_addr, *r_name, *r_aliases, *r_alias = NULL, *r_addr_list;
-        struct local_address *a;
-        unsigned n, c;
-
-        assert(canonical);
-        assert(result);
-        assert(buffer);
-        assert(errnop);
-        assert(h_errnop);
-
-        alen = FAMILY_ADDRESS_SIZE(af);
-
-        for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++)
-                if (af == a->family)
-                        c++;
-
-        l_canonical = strlen(canonical);
-        l_additional = additional ? strlen(additional) : 0;
-        ms = ALIGN(l_canonical+1)+
-                (additional ? ALIGN(l_additional+1) : 0) +
-                sizeof(char*) +
-                (additional ? sizeof(char*) : 0) +
-                (c > 0 ? c : 1) * ALIGN(alen) +
-                (c > 0 ? c+1 : 2) * sizeof(char*);
-
-        if (buflen < ms) {
-                *errnop = ENOMEM;
-                *h_errnop = NO_RECOVERY;
-                return NSS_STATUS_TRYAGAIN;
-        }
-
-        /* First, fill in hostnames */
-        r_name = buffer;
-        memcpy(r_name, canonical, l_canonical+1);
-        idx = ALIGN(l_canonical+1);
-
-        if (additional) {
-                r_alias = buffer + idx;
-                memcpy(r_alias, additional, l_additional+1);
-                idx += ALIGN(l_additional+1);
-        }
-
-        /* Second, create aliases array */
-        r_aliases = buffer + idx;
-        if (additional) {
-                ((char**) r_aliases)[0] = r_alias;
-                ((char**) r_aliases)[1] = NULL;
-                idx += 2*sizeof(char*);
-        } else {
-                ((char**) r_aliases)[0] = NULL;
-                idx += sizeof(char*);
-        }
-
-        /* Third, add addresses */
-        r_addr = buffer + idx;
-        if (c > 0) {
-                unsigned i = 0;
-
-                for (a = addresses, n = 0; n < n_addresses; a++, n++) {
-                        if (af != a->family)
-                                continue;
-
-                        memcpy(r_addr + i*ALIGN(alen), &a->address, alen);
-                        i++;
-                }
-
-                assert(i == c);
-                idx += c*ALIGN(alen);
-        } else {
-                if (af == AF_INET)
-                        *(uint32_t*) r_addr = local_address_ipv4;
-                else
-                        memcpy(r_addr, LOCALADDRESS_IPV6, 16);
-
-                idx += ALIGN(alen);
-        }
-
-        /* Fourth, add address pointer array */
-        r_addr_list = buffer + idx;
-        if (c > 0) {
-                unsigned i;
-
-                for (i = 0; i < c; i++)
-                        ((char**) r_addr_list)[i] = r_addr + i*ALIGN(alen);
-
-                ((char**) r_addr_list)[i] = NULL;
-                idx += (c+1) * sizeof(char*);
-
-        } else {
-                ((char**) r_addr_list)[0] = r_addr;
-                ((char**) r_addr_list)[1] = NULL;
-                idx += 2 * sizeof(char*);
-        }
-
-        /* Verify the size matches */
-        assert(idx == ms);
-
-        result->h_name = r_name;
-        result->h_aliases = (char**) r_aliases;
-        result->h_addrtype = af;
-        result->h_length = alen;
-        result->h_addr_list = (char**) r_addr_list;
-
-        if (ttlp)
-                *ttlp = 0;
-
-        if (canonp)
-                *canonp = r_name;
-
-        /* Explicitly reset all error variables */
-        *errnop = 0;
-        *h_errnop = NETDB_SUCCESS;
-        h_errno = 0;
-
-        return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status _nss_myhostname_gethostbyname3_r(
-                const char *name,
-                int af,
-                struct hostent *host,
-                char *buffer, size_t buflen,
-                int *errnop, int *h_errnop,
-                int32_t *ttlp,
-                char **canonp) {
-
-        _cleanup_free_ struct local_address *addresses = NULL;
-        const char *canonical, *additional = NULL;
-        _cleanup_free_ char *hn = NULL;
-        uint32_t local_address_ipv4 = 0;
-        int n_addresses = 0;
-
-        assert(name);
-        assert(host);
-        assert(buffer);
-        assert(errnop);
-        assert(h_errnop);
-
-        if (af == AF_UNSPEC)
-                af = AF_INET;
-
-        if (af != AF_INET && af != AF_INET6) {
-                *errnop = EAFNOSUPPORT;
-                *h_errnop = NO_DATA;
-                return NSS_STATUS_UNAVAIL;
-        }
-
-        if (is_localhost(name)) {
-                canonical = "localhost";
-                local_address_ipv4 = htonl(INADDR_LOOPBACK);
-
-        } else if (is_gateway(name)) {
-
-                n_addresses = local_gateways(NULL, 0, af, &addresses);
-                if (n_addresses <= 0) {
-                        *errnop = ENOENT;
-                        *h_errnop = HOST_NOT_FOUND;
-                        return NSS_STATUS_NOTFOUND;
-                }
-
-                canonical = "gateway";
-
-        } else {
-                hn = gethostname_malloc();
-                if (!hn) {
-                        *errnop = ENOMEM;
-                        *h_errnop = NO_RECOVERY;
-                        return NSS_STATUS_TRYAGAIN;
-                }
-
-                if (!streq(name, hn) && !streq_ptr(startswith(name, hn), ".")) {
-                        *errnop = ENOENT;
-                        *h_errnop = HOST_NOT_FOUND;
-                        return NSS_STATUS_NOTFOUND;
-                }
-
-                n_addresses = local_addresses(NULL, 0, af, &addresses);
-                if (n_addresses < 0)
-                        n_addresses = 0;
-
-                canonical = hn;
-                additional = n_addresses <= 0 && af == AF_INET6 ? "localhost" : NULL;
-                local_address_ipv4 = LOCALADDRESS_IPV4;
-        }
-
-        return fill_in_hostent(
-                        canonical, additional,
-                        af,
-                        addresses, n_addresses,
-                        local_address_ipv4,
-                        host,
-                        buffer, buflen,
-                        errnop, h_errnop,
-                        ttlp,
-                        canonp);
-}
-
-enum nss_status _nss_myhostname_gethostbyaddr2_r(
-                const void* addr, socklen_t len,
-                int af,
-                struct hostent *host,
-                char *buffer, size_t buflen,
-                int *errnop, int *h_errnop,
-                int32_t *ttlp) {
-
-        const char *canonical = NULL, *additional = NULL;
-        uint32_t local_address_ipv4 = LOCALADDRESS_IPV4;
-        _cleanup_free_ struct local_address *addresses = NULL;
-        _cleanup_free_ char *hn = NULL;
-        int n_addresses = 0;
-        struct local_address *a;
-        bool additional_from_hostname = false;
-        unsigned n;
-
-        assert(addr);
-        assert(host);
-        assert(buffer);
-        assert(errnop);
-        assert(h_errnop);
-
-        if (!IN_SET(af, AF_INET, AF_INET6)) {
-                *errnop = EAFNOSUPPORT;
-                *h_errnop = NO_DATA;
-                return NSS_STATUS_UNAVAIL;
-        }
-
-        if (len != FAMILY_ADDRESS_SIZE(af)) {
-                *errnop = EINVAL;
-                *h_errnop = NO_RECOVERY;
-                return NSS_STATUS_UNAVAIL;
-        }
-
-        if (af == AF_INET) {
-                if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4)
-                        goto found;
-
-                if ((*(uint32_t*) addr) == htonl(INADDR_LOOPBACK)) {
-                        canonical = "localhost";
-                        local_address_ipv4 = htonl(INADDR_LOOPBACK);
-                        goto found;
-                }
-
-        } else {
-                assert(af == AF_INET6);
-
-                if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0) {
-                        canonical = "localhost";
-                        additional_from_hostname = true;
-                        goto found;
-                }
-        }
-
-        n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses);
-        if (n_addresses > 0) {
-                for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) {
-                        if (af != a->family)
-                                continue;
-
-                        if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0)
-                                goto found;
-                }
-        }
-
-        free(addresses);
-        addresses = NULL;
-
-        n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses);
-        if (n_addresses > 0) {
-                for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) {
-                        if (af != a->family)
-                                continue;
-
-                        if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) {
-                                canonical = "gateway";
-                                goto found;
-                        }
-                }
-        }
-
-        *errnop = ENOENT;
-        *h_errnop = HOST_NOT_FOUND;
-
-        return NSS_STATUS_NOTFOUND;
-
-found:
-        if (!canonical || (!additional && additional_from_hostname)) {
-                hn = gethostname_malloc();
-                if (!hn) {
-                        *errnop = ENOMEM;
-                        *h_errnop = NO_RECOVERY;
-                        return NSS_STATUS_TRYAGAIN;
-                }
-
-                if (!canonical)
-                        canonical = hn;
-
-                if (!additional && additional_from_hostname)
-                        additional = hn;
-        }
-
-        return fill_in_hostent(
-                        canonical, additional,
-                        af,
-                        addresses, n_addresses,
-                        local_address_ipv4,
-                        host,
-                        buffer, buflen,
-                        errnop, h_errnop,
-                        ttlp,
-                        NULL);
-}
-
-NSS_GETHOSTBYNAME_FALLBACKS(myhostname);
-NSS_GETHOSTBYADDR_FALLBACKS(myhostname);