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samba-mirror/source3/utils/net_idmap.c

515 lines
12 KiB
C

/*
Samba Unix/Linux SMB client library
Distributed SMB/CIFS Server Management Utility
Copyright (C) 2003 Andrew Bartlett (abartlet@samba.org)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define FOO(x) (x)
#include "includes.h"
#include "utils/net.h"
#include "secrets.h"
#include "idmap.h"
#include "dbwrap.h"
#include "../libcli/security/security.h"
#define ALLOC_CHECK(mem) do { \
if (!mem) { \
d_fprintf(stderr, _("Out of memory!\n")); \
talloc_free(ctx); \
return -1; \
} } while(0)
/***********************************************************
Helper function for net_idmap_dump. Dump one entry.
**********************************************************/
static int net_idmap_dump_one_entry(struct db_record *rec,
void *unused)
{
if (strcmp((char *)rec->key.dptr, "USER HWM") == 0) {
printf(_("USER HWM %d\n"), IVAL(rec->value.dptr,0));
return 0;
}
if (strcmp((char *)rec->key.dptr, "GROUP HWM") == 0) {
printf(_("GROUP HWM %d\n"), IVAL(rec->value.dptr,0));
return 0;
}
if (strncmp((char *)rec->key.dptr, "S-", 2) != 0)
return 0;
printf("%s %s\n", rec->value.dptr, rec->key.dptr);
return 0;
}
/***********************************************************
Dump the current idmap
**********************************************************/
static int net_idmap_dump(struct net_context *c, int argc, const char **argv)
{
struct db_context *db;
TALLOC_CTX *mem_ctx;
if ( argc != 1 || c->display_usage) {
d_printf("%s\n%s",
_("Usage:"),
_("net idmap dump <inputfile>\n"
" Dump current ID mapping.\n"
" inputfile\tTDB file to read mappings from.\n"));
return c->display_usage?0:-1;
}
mem_ctx = talloc_stackframe();
db = db_open(mem_ctx, argv[0], 0, TDB_DEFAULT, O_RDONLY, 0);
if (db == NULL) {
d_fprintf(stderr, _("Could not open idmap db (%s): %s\n"),
argv[0], strerror(errno));
talloc_free(mem_ctx);
return -1;
}
db->traverse_read(db, net_idmap_dump_one_entry, NULL);
talloc_free(mem_ctx);
return 0;
}
/***********************************************************
Write entries from stdin to current local idmap
**********************************************************/
static int net_idmap_store_id_mapping(struct db_context *db,
enum id_type type,
unsigned long idval,
const char *sid_string)
{
NTSTATUS status;
char *idstr = NULL;
switch(type) {
case ID_TYPE_UID:
idstr = talloc_asprintf(talloc_tos(), "UID %lu", idval);
break;
case ID_TYPE_GID:
idstr = talloc_asprintf(talloc_tos(), "GID %lu", idval);
break;
default:
d_fprintf(stderr, "Invalid id mapping type: %d\n", type);
return -1;
}
status = dbwrap_store_bystring(db, idstr,
string_term_tdb_data(sid_string),
TDB_REPLACE);
if (!NT_STATUS_IS_OK(status)) {
d_fprintf(stderr, "Error storing ID -> SID: "
"%s\n", nt_errstr(status));
talloc_free(idstr);
return -1;
}
status = dbwrap_store_bystring(db, sid_string,
string_term_tdb_data(idstr),
TDB_REPLACE);
if (!NT_STATUS_IS_OK(status)) {
d_fprintf(stderr, "Error storing SID -> ID: "
"%s\n", nt_errstr(status));
talloc_free(idstr);
return -1;
}
return 0;
}
static int net_idmap_restore(struct net_context *c, int argc, const char **argv)
{
TALLOC_CTX *mem_ctx;
FILE *input = NULL;
struct db_context *db;
char *dbfile = NULL;
int ret = 0;
if (c->display_usage) {
d_printf("%s\n%s",
_("Usage:"),
_("net idmap restore [<inputfile>]\n"
" Restore ID mappings from file\n"
" inputfile\tFile to load ID mappings from. If not "
"given, load data from stdin.\n"));
return 0;
}
mem_ctx = talloc_stackframe();
if (strequal(lp_idmap_backend(), "tdb")) {
dbfile = state_path("winbindd_idmap.tdb");
if (dbfile == NULL) {
d_fprintf(stderr, _("Out of memory!\n"));
return -1;
}
} else if (strequal(lp_idmap_backend(), "tdb2")) {
dbfile = lp_parm_talloc_string(-1, "tdb", "idmap2.tdb", NULL);
if (dbfile == NULL) {
dbfile = talloc_asprintf(mem_ctx, "%s/idmap2.tdb",
lp_private_dir());
}
} else {
char *backend, *args;
backend = talloc_strdup(mem_ctx, lp_idmap_backend());
args = strchr(backend, ':');
if (args != NULL) {
*args = '\0';
}
d_printf(_("Sorry, 'net idmap restore' is currently not "
"supported for idmap backend = %s.\n"
"Only tdb and tdb2 are supported.\n"),
backend);
ret = -1;
goto done;
}
d_fprintf(stderr, _("restoring id mapping to %s data base in '%s'\n"),
lp_idmap_backend(), dbfile);
if (argc == 1) {
input = fopen(argv[0], "r");
} else {
input = stdin;
}
db = db_open(mem_ctx, dbfile, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
if (db == NULL) {
d_fprintf(stderr, _("Could not open idmap db (%s): %s\n"),
dbfile, strerror(errno));
ret = -1;
goto done;
}
if (db->transaction_start(db) != 0) {
d_fprintf(stderr, _("Failed to start transaction.\n"));
ret = -1;
goto done;
}
while (!feof(input)) {
char line[128], sid_string[128];
int len;
unsigned long idval;
if (fgets(line, 127, input) == NULL)
break;
len = strlen(line);
if ( (len > 0) && (line[len-1] == '\n') )
line[len-1] = '\0';
if (sscanf(line, "GID %lu %128s", &idval, sid_string) == 2)
{
ret = net_idmap_store_id_mapping(db, ID_TYPE_GID,
idval, sid_string);
if (ret != 0) {
break;
}
} else if (sscanf(line, "UID %lu %128s", &idval, sid_string) == 2)
{
ret = net_idmap_store_id_mapping(db, ID_TYPE_UID,
idval, sid_string);
if (ret != 0) {
break;
}
} else if (sscanf(line, "USER HWM %lu", &idval) == 1) {
ret = dbwrap_store_int32(db, "USER HWM", idval);
if (ret != 0) {
d_fprintf(stderr, _("Could not store USER HWM.\n"));
break;
}
} else if (sscanf(line, "GROUP HWM %lu", &idval) == 1) {
ret = dbwrap_store_int32(db, "GROUP HWM", idval);
if (ret != 0) {
d_fprintf(stderr,
_("Could not store GROUP HWM.\n"));
break;
}
} else {
d_fprintf(stderr, _("ignoring invalid line [%s]\n"),
line);
continue;
}
}
if (ret == 0) {
if(db->transaction_commit(db) != 0) {
d_fprintf(stderr, _("Failed to commit transaction.\n"));
ret = -1;
}
} else {
if (db->transaction_cancel(db) != 0) {
d_fprintf(stderr, _("Failed to cancel transaction.\n"));
}
}
done:
if ((input != NULL) && (input != stdin)) {
fclose(input);
}
talloc_free(mem_ctx);
return ret;
}
/***********************************************************
Delete a SID mapping from a winbindd_idmap.tdb
**********************************************************/
static int net_idmap_delete(struct net_context *c, int argc, const char **argv)
{
d_printf("%s\n", _("Not implemented yet"));
return -1;
}
static int net_idmap_set(struct net_context *c, int argc, const char **argv)
{
d_printf("%s\n", _("Not implemented yet"));
return -1;
}
bool idmap_store_secret(const char *backend,
const char *domain, const char *identity,
const char *secret)
{
char *tmp;
int r;
bool ret;
r = asprintf(&tmp, "IDMAP_%s_%s", backend, domain);
if (r < 0) return false;
strupper_m(tmp); /* make sure the key is case insensitive */
ret = secrets_store_generic(tmp, identity, secret);
free(tmp);
return ret;
}
static int net_idmap_secret(struct net_context *c, int argc, const char **argv)
{
TALLOC_CTX *ctx;
const char *secret;
const char *dn;
char *domain;
char *backend;
char *opt = NULL;
bool ret;
if (argc != 2 || c->display_usage) {
d_printf("%s\n%s",
_("Usage:\n"),
_("net idmap secret <DOMAIN> <secret>\n"
" Set the secret for the specified domain\n"
" DOMAIN\tDomain to set secret for.\n"
" secret\tNew secret to set.\n"));
return c->display_usage?0:-1;
}
secret = argv[1];
ctx = talloc_new(NULL);
ALLOC_CHECK(ctx);
domain = talloc_strdup(ctx, argv[0]);
ALLOC_CHECK(domain);
opt = talloc_asprintf(ctx, "idmap config %s", domain);
ALLOC_CHECK(opt);
backend = talloc_strdup(ctx, lp_parm_const_string(-1, opt, "backend", "tdb"));
ALLOC_CHECK(backend);
if ( ( ! backend) || ( ! strequal(backend, "ldap"))) {
d_fprintf(stderr,
_("The only currently supported backend is LDAP\n"));
talloc_free(ctx);
return -1;
}
dn = lp_parm_const_string(-1, opt, "ldap_user_dn", NULL);
if ( ! dn) {
d_fprintf(stderr,
_("Missing ldap_user_dn option for domain %s\n"),
domain);
talloc_free(ctx);
return -1;
}
ret = idmap_store_secret("ldap", domain, dn, secret);
if ( ! ret) {
d_fprintf(stderr, _("Failed to store secret\n"));
talloc_free(ctx);
return -1;
}
d_printf(_("Secret stored\n"));
return 0;
}
int net_help_idmap(struct net_context *c, int argc, const char **argv)
{
d_printf(_("net idmap dump <inputfile>\n"
" Dump current id mapping\n"));
d_printf(_("net idmap restore\n"
" Restore entries from stdin\n"));
/* Deliberately *not* document net idmap delete */
d_printf(_("net idmap secret <DOMAIN> <secret>\n"
" Set the secret for the specified DOMAIN module)\n"));
return -1;
}
static int net_idmap_aclmapset(struct net_context *c, int argc, const char **argv)
{
TALLOC_CTX *mem_ctx;
int result = -1;
struct dom_sid src_sid, dst_sid;
char *src, *dst;
struct db_context *db;
struct db_record *rec;
NTSTATUS status;
if (argc != 3 || c->display_usage) {
d_fprintf(stderr, "%s net idmap aclmapset <tdb> "
"<src-sid> <dst-sid>\n", _("Usage:"));
return -1;
}
if (!(mem_ctx = talloc_init("net idmap aclmapset"))) {
d_fprintf(stderr, _("talloc_init failed\n"));
return -1;
}
if (!(db = db_open(mem_ctx, argv[0], 0, TDB_DEFAULT,
O_RDWR|O_CREAT, 0600))) {
d_fprintf(stderr, _("db_open failed: %s\n"), strerror(errno));
goto fail;
}
if (!string_to_sid(&src_sid, argv[1])) {
d_fprintf(stderr, _("%s is not a valid sid\n"), argv[1]);
goto fail;
}
if (!string_to_sid(&dst_sid, argv[2])) {
d_fprintf(stderr, _("%s is not a valid sid\n"), argv[2]);
goto fail;
}
if (!(src = sid_string_talloc(mem_ctx, &src_sid))
|| !(dst = sid_string_talloc(mem_ctx, &dst_sid))) {
d_fprintf(stderr, _("talloc_strdup failed\n"));
goto fail;
}
if (!(rec = db->fetch_locked(
db, mem_ctx, string_term_tdb_data(src)))) {
d_fprintf(stderr, _("could not fetch db record\n"));
goto fail;
}
status = rec->store(rec, string_term_tdb_data(dst), 0);
TALLOC_FREE(rec);
if (!NT_STATUS_IS_OK(status)) {
d_fprintf(stderr, _("could not store record: %s\n"),
nt_errstr(status));
goto fail;
}
result = 0;
fail:
TALLOC_FREE(mem_ctx);
return result;
}
/***********************************************************
Look at the current idmap
**********************************************************/
int net_idmap(struct net_context *c, int argc, const char **argv)
{
struct functable func[] = {
{
"dump",
net_idmap_dump,
NET_TRANSPORT_LOCAL,
N_("Dump the current ID mappings"),
N_("net idmap dump\n"
" Dump the current ID mappings")
},
{
"restore",
net_idmap_restore,
NET_TRANSPORT_LOCAL,
N_("Restore entries from stdin"),
N_("net idmap restore\n"
" Restore entries from stdin")
},
{
"setmap",
net_idmap_set,
NET_TRANSPORT_LOCAL,
N_("Not implemented yet"),
N_("net idmap setmap\n"
" Not implemented yet")
},
{
"delete",
net_idmap_delete,
NET_TRANSPORT_LOCAL,
N_("Not implemented yet"),
N_("net idmap delete\n"
" Not implemented yet")
},
{
"secret",
net_idmap_secret,
NET_TRANSPORT_LOCAL,
N_("Set secret for specified domain"),
N_("net idmap secret <DOMAIN> <secret>\n"
" Set secret for specified domain")
},
{
"aclmapset",
net_idmap_aclmapset,
NET_TRANSPORT_LOCAL,
N_("Set acl map"),
N_("net idmap aclmapset\n"
" Set acl map")
},
{NULL, NULL, 0, NULL, NULL}
};
return net_run_function(c, argc, argv, "net idmap", func);
}