summaryrefslogtreecommitdiffstats
path: root/third_party/heimdal/lib/kadm5/create_s.c
blob: 1c2ab15f30dbab5917857ca5143d8b8ffe86815b (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
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
/*
 * Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "kadm5_locl.h"

RCSID("$Id$");

static kadm5_ret_t
get_default(kadm5_server_context *context, krb5_principal princ,
	    kadm5_principal_ent_t def)
{
    kadm5_ret_t ret;
    krb5_principal def_principal;
    krb5_const_realm realm = krb5_principal_get_realm(context->context, princ);

    ret = krb5_make_principal(context->context, &def_principal,
			      realm, "default", NULL);
    if (ret)
	return ret;
    ret = kadm5_s_get_principal(context, def_principal, def,
				KADM5_PRINCIPAL_NORMAL_MASK);
    krb5_free_principal (context->context, def_principal);
    return ret;
}

static kadm5_ret_t
create_principal(kadm5_server_context *context,
		 kadm5_principal_ent_t princ,
		 uint32_t mask,
		 hdb_entry *ent,
		 uint32_t required_mask,
		 uint32_t forbidden_mask)
{
    kadm5_ret_t ret;
    kadm5_principal_ent_rec defrec, *defent;
    uint32_t def_mask;

    memset(ent, 0, sizeof(*ent));
    if((mask & required_mask) != required_mask)
	return KADM5_BAD_MASK;
    if((mask & forbidden_mask))
	return KADM5_BAD_MASK;
    if((mask & KADM5_POLICY) && strcmp(princ->policy, "default"))
	/* XXX no real policies for now */
	return KADM5_UNK_POLICY;
    ret  = krb5_copy_principal(context->context, princ->principal,
			       &ent->principal);
    if(ret)
	return ret;

    defent = &defrec;
    ret = get_default(context, princ->principal, defent);
    if(ret) {
	defent   = NULL;
	def_mask = 0;
    } else {
	def_mask = KADM5_ATTRIBUTES | KADM5_MAX_LIFE | KADM5_MAX_RLIFE;
    }

    ret = _kadm5_setup_entry(context,
			     ent, mask | def_mask,
			     princ, mask,
			     defent, def_mask);
    if(defent)
	kadm5_free_principal_ent(context, defent);
    if (ret)
	return ret;

    ent->created_by.time = time(NULL);

    return krb5_copy_principal(context->context, context->caller,
			       &ent->created_by.principal);
}

struct create_principal_hook_ctx {
    kadm5_server_context *context;
    enum kadm5_hook_stage stage;
    krb5_error_code code;
    kadm5_principal_ent_t princ;
    uint32_t mask;
    const char *password;
};

static krb5_error_code KRB5_LIB_CALL
create_principal_hook_cb(krb5_context context,
			 const void *hook,
			 void *hookctx,
			 void *userctx)
{
    krb5_error_code ret;
    const struct kadm5_hook_ftable *ftable = hook;
    struct create_principal_hook_ctx *ctx = userctx;

    ret = ftable->create(context, hookctx,
			 ctx->stage, ctx->code, ctx->princ,
			 ctx->mask, ctx->password);
    if (ret != 0 && ret != KRB5_PLUGIN_NO_HANDLE)
	_kadm5_s_set_hook_error_message(ctx->context, ret, "create",
					hook, ctx->stage);

    /* only pre-commit plugins can abort */
    if (ret == 0 || ctx->stage == KADM5_HOOK_STAGE_POSTCOMMIT)
	ret = KRB5_PLUGIN_NO_HANDLE;

    return ret;
}

static kadm5_ret_t
create_principal_hook(kadm5_server_context *context,
		      enum kadm5_hook_stage stage,
		      krb5_error_code code,
		      kadm5_principal_ent_t princ,
		      uint32_t mask,
		      const char *password)
{
    krb5_error_code ret;
    struct create_principal_hook_ctx ctx;

    ctx.context = context;
    ctx.stage = stage;
    ctx.code = code;
    ctx.princ = princ;
    ctx.mask = mask;
    ctx.password = password;

    ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data,
			     0, &ctx, create_principal_hook_cb);
    if (ret == KRB5_PLUGIN_NO_HANDLE)
	ret = 0;

    return ret;
}

kadm5_ret_t
kadm5_s_create_principal_with_key(void *server_handle,
				  kadm5_principal_ent_t princ,
				  uint32_t mask)
{
    kadm5_ret_t ret;
    hdb_entry ent;
    kadm5_server_context *context = server_handle;

    if ((mask & KADM5_KVNO) == 0) {
	/* create_principal() through _kadm5_setup_entry(), will need this */
	princ->kvno = 1;
	mask |= KADM5_KVNO;
    }

    ret = create_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT,
				0, princ, mask, NULL);
    if (ret)
	return ret;

    ret = create_principal(context, princ, mask, &ent,
			   KADM5_PRINCIPAL | KADM5_KEY_DATA,
			   KADM5_LAST_PWD_CHANGE | KADM5_MOD_TIME
			   | KADM5_MOD_NAME | KADM5_MKVNO
			   | KADM5_AUX_ATTRIBUTES
			   | KADM5_POLICY_CLR | KADM5_LAST_SUCCESS
			   | KADM5_LAST_FAILED | KADM5_FAIL_AUTH_COUNT);
    if (ret)
        return ret;

    if (!context->keep_open) {
        ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
        if (ret) {
            hdb_free_entry(context->context, context->db, &ent);
            return ret;
        }
    }

    ret = kadm5_log_init(context);
    if (ret)
        goto out;

    ret = hdb_seal_keys(context->context, context->db, &ent);
    if (ret)
	goto out2;

    /*
     * This logs the change for iprop and writes to the HDB.
     *
     * Creation of would-be virtual principals w/o the materialize flag will be
     * rejected in kadm5_log_create().
     */
    ret = kadm5_log_create(context, &ent);

    (void) create_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT,
				 ret, princ, mask, NULL);

 out2:
    (void) kadm5_log_end(context);
 out:
    if (!context->keep_open) {
        kadm5_ret_t ret2;
        ret2 = context->db->hdb_close(context->context, context->db);
        if (ret == 0 && ret2 != 0)
            ret = ret2;
    }
    hdb_free_entry(context->context, context->db, &ent);
    return _kadm5_error_code(ret);
}


kadm5_ret_t
kadm5_s_create_principal(void *server_handle,
			 kadm5_principal_ent_t princ,
			 uint32_t mask,
			 int n_ks_tuple,
			 krb5_key_salt_tuple *ks_tuple,
			 const char *password)
{
    kadm5_ret_t ret;
    hdb_entry ent;
    kadm5_server_context *context = server_handle;
    int use_pw = 1;

    if ((mask & KADM5_ATTRIBUTES) &&
        (princ->attributes & (KRB5_KDB_VIRTUAL_KEYS | KRB5_KDB_VIRTUAL)) &&
        !(princ->attributes & KRB5_KDB_MATERIALIZE)) {
        ret = KADM5_DUP; /* XXX */
        goto out;
    }
    if ((mask & KADM5_ATTRIBUTES) &&
        (princ->attributes & KRB5_KDB_VIRTUAL_KEYS) &&
        (princ->attributes & KRB5_KDB_VIRTUAL)) {
        ret = KADM5_DUP; /* XXX */
        goto out;
    }

    if ((mask & KADM5_ATTRIBUTES) &&
        (princ->attributes & KRB5_KDB_VIRTUAL) &&
        (princ->attributes & KRB5_KDB_MATERIALIZE))
        princ->attributes &= ~(KRB5_KDB_MATERIALIZE | KRB5_KDB_VIRTUAL);

    if (password[0] == '\0' && (mask & KADM5_KEY_DATA) && princ->n_key_data && 
        !kadm5_all_keys_are_bogus(princ->n_key_data, princ->key_data))
        use_pw = 0;

    if (use_pw && _kadm5_enforce_pwqual_on_admin_set_p(context)) {
	krb5_data pwd_data;
	const char *pwd_reason;

	pwd_data.data = rk_UNCONST(password);
	pwd_data.length = strlen(password);

	pwd_reason = kadm5_check_password_quality(context->context,
						  princ->principal, &pwd_data);
	if (pwd_reason != NULL) {
	    krb5_set_error_message(context->context, KADM5_PASS_Q_DICT, "%s", pwd_reason);
	    return KADM5_PASS_Q_DICT;
	}
    }

    if ((mask & KADM5_KVNO) == 0) {
	/* create_principal() through _kadm5_setup_entry(), will need this */
	princ->kvno = 1;
	mask |= KADM5_KVNO;
    }

    ret = create_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT,
				0, princ, mask, password);
    if (ret)
	return ret;

    if (use_pw)
        ret = create_principal(context, princ, mask, &ent,
                               KADM5_PRINCIPAL,
                               KADM5_LAST_PWD_CHANGE | KADM5_MOD_TIME
                               | KADM5_MOD_NAME | KADM5_MKVNO
                               | KADM5_AUX_ATTRIBUTES | KADM5_KEY_DATA
                               | KADM5_POLICY_CLR | KADM5_LAST_SUCCESS
                               | KADM5_LAST_FAILED | KADM5_FAIL_AUTH_COUNT);
    else
        ret = create_principal(context, princ, mask, &ent,
                               KADM5_PRINCIPAL | KADM5_KEY_DATA,
                               KADM5_LAST_PWD_CHANGE | KADM5_MOD_TIME
                               | KADM5_MOD_NAME | KADM5_MKVNO
                               | KADM5_AUX_ATTRIBUTES
                               | KADM5_POLICY_CLR | KADM5_LAST_SUCCESS
                               | KADM5_LAST_FAILED | KADM5_FAIL_AUTH_COUNT);
    if (ret)
        return ret;

    if (!context->keep_open) {
        ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
        if (ret) {
            hdb_free_entry(context->context, context->db, &ent);
            return ret;
        }
    }

    ret = kadm5_log_init(context);
    if (ret)
        goto out;

    free_Keys(&ent.keys);

    if (use_pw) {
        ret = _kadm5_set_keys(context, &ent, n_ks_tuple, ks_tuple, password);
        if (ret)
            goto out2;
    }

    ret = hdb_seal_keys(context->context, context->db, &ent);
    if (ret)
	goto out2;

    /* This logs the change for iprop and writes to the HDB */
    ret = kadm5_log_create(context, &ent);

    (void) create_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT,
				 ret, princ, mask, password);

 out2:
    (void) kadm5_log_end(context);
 out:
    if (!context->keep_open) {
        kadm5_ret_t ret2;
        ret2 = context->db->hdb_close(context->context, context->db);
        if (ret == 0 && ret2 != 0)
            ret = ret2;
    }
    hdb_free_entry(context->context, context->db, &ent);
    return _kadm5_error_code(ret);
}