summaryrefslogtreecommitdiff
path: root/source3/utils/net_idmap.c
blob: d4d2c931b84eb6262d92bbf60651e57fb0209e84 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
/* 
   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include "includes.h"
#include "utils/net.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(TDB_CONTEXT *tdb,
				    TDB_DATA key,
				    TDB_DATA data,
				    void *unused)
{
	if (strcmp((char *)key.dptr, "USER HWM") == 0) {
		printf("USER HWM %d\n", IVAL(data.dptr,0));
		return 0;
	}

	if (strcmp((char *)key.dptr, "GROUP HWM") == 0) {
		printf("GROUP HWM %d\n", IVAL(data.dptr,0));
		return 0;
	}

	if (strncmp((char *)key.dptr, "S-", 2) != 0)
		return 0;

	printf("%s %s\n", data.dptr, key.dptr);
	return 0;
}

/***********************************************************
 Dump the current idmap
 **********************************************************/
static int net_idmap_dump(int argc, const char **argv)
{
	TDB_CONTEXT *idmap_tdb;

	if ( argc != 1 )
		return net_help_idmap( argc, argv );

	idmap_tdb = tdb_open_log(argv[0], 0, TDB_DEFAULT, O_RDONLY, 0);

	if (idmap_tdb == NULL) {
		d_fprintf(stderr, "Could not open idmap: %s\n", argv[0]);
		return -1;
	}

	tdb_traverse(idmap_tdb, net_idmap_dump_one_entry, NULL);

	tdb_close(idmap_tdb);

	return 0;
}

/***********************************************************
 Write entries from stdin to current local idmap
 **********************************************************/

static int net_idmap_restore(int argc, const char **argv)
{
	TALLOC_CTX *ctx;
	FILE *input;

	if (! winbind_ping()) {
		d_fprintf(stderr, "To use net idmap Winbindd must be running.\n");
		return -1;
	}

	ctx = talloc_new(NULL);
	ALLOC_CHECK(ctx);

	if (argc == 1) {
		input = fopen(argv[0], "r");
	} else {
		input = stdin;
	}

	while (!feof(input)) {
		char line[128], sid_string[128];
		int len;
		DOM_SID sid;
		struct id_map map;
		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) {
			map.xid.type = ID_TYPE_GID;
			map.xid.id = idval;
		} else if (sscanf(line, "UID %lu %128s", &idval, sid_string) == 2) {
			map.xid.type = ID_TYPE_UID;
			map.xid.id = idval;
		} else if (sscanf(line, "USER HWM %lu", &idval) == 1) {
			/* set uid hwm */
			if (! winbind_set_uid_hwm(idval)) {
				d_fprintf(stderr, "Could not set USER HWM\n");
			}
			continue;
		} else if (sscanf(line, "GROUP HWM %lu", &idval) == 1) {
			/* set gid hwm */
			if (! winbind_set_gid_hwm(idval)) {
				d_fprintf(stderr, "Could not set GROUP HWM\n");
			}
			continue;
		} else {
			d_fprintf(stderr, "ignoring invalid line [%s]\n", line);
			continue;
		}

		if (!string_to_sid(&sid, sid_string)) {
			d_fprintf(stderr, "ignoring invalid sid [%s]\n", sid_string);
			continue;
		}
		map.sid = &sid;

		if (!winbind_set_mapping(&map)) {
			d_fprintf(stderr, "Could not set mapping of %s %lu to sid %s\n",
				 (map.xid.type == ID_TYPE_GID) ? "GID" : "UID",
				 (unsigned long)map.xid.id, sid_string_static(map.sid));
			continue;
		}
			 
	}

	if (input != stdin) {
		fclose(input);
	}

	talloc_free(ctx);
	return 0;
}

/***********************************************************
 Delete a SID mapping from a winbindd_idmap.tdb
 **********************************************************/
static int net_idmap_delete(int argc, const char **argv)
{
	d_printf("Not Implemented yet\n");
	return -1;
}

static int net_idmap_set(int argc, const char **argv)
{
	d_printf("Not Implemented yet\n");
	return -1;
}
BOOL idmap_store_secret(const char *backend, bool alloc,
			const char *domain, const char *identity,
			const char *secret)
{
	char *tmp;
	int r;
	BOOL ret;

	if (alloc) {
		r = asprintf(&tmp, "IDMAP_ALLOC_%s", backend);
	} else {
		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(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) {
		return net_help_idmap(argc, argv);
	}

	secret = argv[1];

	ctx = talloc_new(NULL);
	ALLOC_CHECK(ctx);

	if (strcmp(argv[0], "alloc") == 0) {
		domain = NULL;
		backend = lp_idmap_alloc_backend();
	} else {
		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;
	}

	if (domain) {

		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", false, domain, dn, secret);
	} else {
		dn = lp_parm_const_string(-1, "idmap alloc config", "ldap_user_dn", NULL);
		if ( ! dn) {
			d_fprintf(stderr, "Missing ldap_user_dn option for alloc backend\n");
			talloc_free(ctx);
			return -1;
		}

		ret = idmap_store_secret("ldap", true, NULL, 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(int argc, const char **argv)
{
	d_printf("net idmap dump <outputfile>\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>|alloc <secret>\n"\
		 "    Set the secret for the specified DOMAIN (or the alloc module)\n");

	return -1;
}

/***********************************************************
 Look at the current idmap
 **********************************************************/
int net_idmap(int argc, const char **argv)
{
	struct functable func[] = {
		{"dump", net_idmap_dump},
		{"restore", net_idmap_restore},
		{"setmap", net_idmap_set },
		{"delete", net_idmap_delete},
		{"secret", net_idmap_secret},
		{"help", net_help_idmap},
		{NULL, NULL}
	};

	return net_run_function(argc, argv, func, net_help_idmap);
}