[qemu.git] / crypto / secret.c

/*
 * QEMU crypto secret support
 *
 * Copyright (c) 2015 Red Hat, Inc.
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "qemu/osdep.h"
#include "crypto/secret.h"
#include "crypto/cipher.h"
#include "qapi/error.h"
#include "qom/object_interfaces.h"
#include "qemu/base64.h"
#include "trace.h"


static void
qcrypto_secret_load_data(QCryptoSecret *secret,
                         uint8_t **output,
                         size_t *outputlen,
                         Error **errp)
{
    char *data = NULL;
    size_t length = 0;
    GError *gerr = NULL;

    *output = NULL;
    *outputlen = 0;

    if (secret->file) {
        if (secret->data) {
            error_setg(errp,
                       "'file' and 'data' are mutually exclusive");
            return;
        }
        if (!g_file_get_contents(secret->file, &data, &length, &gerr)) {
            error_setg(errp,
                       "Unable to read %s: %s",
                       secret->file, gerr->message);
            g_error_free(gerr);
            return;
        }
        *output = (uint8_t *)data;
        *outputlen = length;
    } else if (secret->data) {
        *outputlen = strlen(secret->data);
        *output = (uint8_t *)g_strdup(secret->data);
    } else {
        error_setg(errp, "Either 'file' or 'data' must be provided");
    }
}


static void qcrypto_secret_decrypt(QCryptoSecret *secret,
                                   const uint8_t *input,
                                   size_t inputlen,
                                   uint8_t **output,
                                   size_t *outputlen,
                                   Error **errp)
{
    uint8_t *key = NULL, *ciphertext = NULL, *iv = NULL;
    size_t keylen, ciphertextlen, ivlen;
    QCryptoCipher *aes = NULL;
    uint8_t *plaintext = NULL;

    *output = NULL;
    *outputlen = 0;

    if (qcrypto_secret_lookup(secret->keyid,
                              &key, &keylen,
                              errp) < 0) {
        goto cleanup;
    }

    if (keylen != 32) {
        error_setg(errp, "Key should be 32 bytes in length");
        goto cleanup;
    }

    if (!secret->iv) {
        error_setg(errp, "IV is required to decrypt secret");
        goto cleanup;
    }

    iv = qbase64_decode(secret->iv, -1, &ivlen, errp);
    if (!iv) {
        goto cleanup;
    }
    if (ivlen != 16) {
        error_setg(errp, "IV should be 16 bytes in length not %zu",
                   ivlen);
        goto cleanup;
    }

    aes = qcrypto_cipher_new(QCRYPTO_CIPHER_ALG_AES_256,
                             QCRYPTO_CIPHER_MODE_CBC,
                             key, keylen,
                             errp);
    if (!aes) {
        goto cleanup;
    }

    if (qcrypto_cipher_setiv(aes, iv, ivlen, errp) < 0) {
        goto cleanup;
    }

    if (secret->format == QCRYPTO_SECRET_FORMAT_BASE64) {
        ciphertext = qbase64_decode((const gchar*)input,
                                    inputlen,
                                    &ciphertextlen,
                                    errp);
        if (!ciphertext) {
            goto cleanup;
        }
        plaintext = g_new0(uint8_t, ciphertextlen + 1);
    } else {
        ciphertextlen = inputlen;
        plaintext = g_new0(uint8_t, inputlen + 1);
    }
    if (qcrypto_cipher_decrypt(aes,
                               ciphertext ? ciphertext : input,
                               plaintext,
                               ciphertextlen,
                               errp) < 0) {
        plaintext = NULL;
        goto cleanup;
    }

    if (plaintext[ciphertextlen - 1] > 16 ||
        plaintext[ciphertextlen - 1] > ciphertextlen) {
        error_setg(errp, "Incorrect number of padding bytes (%d) "
                   "found on decrypted data",
                   (int)plaintext[ciphertextlen - 1]);
        g_free(plaintext);
        plaintext = NULL;
        goto cleanup;
    }

    /* Even though plaintext may contain arbitrary NUL
     * ensure it is explicitly NUL terminated.
     */
    ciphertextlen -= plaintext[ciphertextlen - 1];
    plaintext[ciphertextlen] = '\0';

    *output = plaintext;
    *outputlen = ciphertextlen;

 cleanup:
    g_free(ciphertext);
    g_free(iv);
    g_free(key);
    qcrypto_cipher_free(aes);
}


static void qcrypto_secret_decode(const uint8_t *input,
                                  size_t inputlen,
                                  uint8_t **output,
                                  size_t *outputlen,
                                  Error **errp)
{
    *output = qbase64_decode((const gchar*)input,
                             inputlen,
                             outputlen,
                             errp);
}


static void
qcrypto_secret_prop_set_loaded(Object *obj,
                               bool value,
                               Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);

    if (value) {
        Error *local_err = NULL;
        uint8_t *input = NULL;
        size_t inputlen = 0;
        uint8_t *output = NULL;
        size_t outputlen = 0;

        qcrypto_secret_load_data(secret, &input, &inputlen, &local_err);
        if (local_err) {
            error_propagate(errp, local_err);
            return;
        }

        if (secret->keyid) {
            qcrypto_secret_decrypt(secret, input, inputlen,
                                   &output, &outputlen, &local_err);
            g_free(input);
            if (local_err) {
                error_propagate(errp, local_err);
                return;
            }
            input = output;
            inputlen = outputlen;
        } else {
            if (secret->format != QCRYPTO_SECRET_FORMAT_RAW) {
                qcrypto_secret_decode(input, inputlen,
                                      &output, &outputlen, &local_err);
                g_free(input);
                if (local_err) {
                    error_propagate(errp, local_err);
                    return;
                }
                input = output;
                inputlen = outputlen;
            }
        }

        secret->rawdata = input;
        secret->rawlen = inputlen;
    } else {
        g_free(secret->rawdata);
        secret->rawlen = 0;
    }
}


static bool
qcrypto_secret_prop_get_loaded(Object *obj,
                               Error **errp G_GNUC_UNUSED)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);
    return secret->data != NULL;
}


static void
qcrypto_secret_prop_set_format(Object *obj,
                               int value,
                               Error **errp G_GNUC_UNUSED)
{
    QCryptoSecret *creds = QCRYPTO_SECRET(obj);

    creds->format = value;
}


static int
qcrypto_secret_prop_get_format(Object *obj,
                               Error **errp G_GNUC_UNUSED)
{
    QCryptoSecret *creds = QCRYPTO_SECRET(obj);

    return creds->format;
}


static void
qcrypto_secret_prop_set_data(Object *obj,
                             const char *value,
                             Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);

    g_free(secret->data);
    secret->data = g_strdup(value);
}


static char *
qcrypto_secret_prop_get_data(Object *obj,
                             Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);
    return g_strdup(secret->data);
}


static void
qcrypto_secret_prop_set_file(Object *obj,
                             const char *value,
                             Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);

    g_free(secret->file);
    secret->file = g_strdup(value);
}


static char *
qcrypto_secret_prop_get_file(Object *obj,
                             Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);
    return g_strdup(secret->file);
}


static void
qcrypto_secret_prop_set_iv(Object *obj,
                           const char *value,
                           Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);

    g_free(secret->iv);
    secret->iv = g_strdup(value);
}


static char *
qcrypto_secret_prop_get_iv(Object *obj,
                           Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);
    return g_strdup(secret->iv);
}


static void
qcrypto_secret_prop_set_keyid(Object *obj,
                              const char *value,
                              Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);

    g_free(secret->keyid);
    secret->keyid = g_strdup(value);
}


static char *
qcrypto_secret_prop_get_keyid(Object *obj,
                              Error **errp)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);
    return g_strdup(secret->keyid);
}


static void
qcrypto_secret_complete(UserCreatable *uc, Error **errp)
{
    object_property_set_bool(OBJECT(uc), true, "loaded", errp);
}


static void
qcrypto_secret_finalize(Object *obj)
{
    QCryptoSecret *secret = QCRYPTO_SECRET(obj);

    g_free(secret->iv);
    g_free(secret->file);
    g_free(secret->keyid);
    g_free(secret->rawdata);
    g_free(secret->data);
}

static void
qcrypto_secret_class_init(ObjectClass *oc, void *data)
{
    UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);

    ucc->complete = qcrypto_secret_complete;

    object_class_property_add_bool(oc, "loaded",
                                   qcrypto_secret_prop_get_loaded,
                                   qcrypto_secret_prop_set_loaded,
                                   NULL);
    object_class_property_add_enum(oc, "format",
                                   "QCryptoSecretFormat",
                                   &QCryptoSecretFormat_lookup,
                                   qcrypto_secret_prop_get_format,
                                   qcrypto_secret_prop_set_format,
                                   NULL);
    object_class_property_add_str(oc, "data",
                                  qcrypto_secret_prop_get_data,
                                  qcrypto_secret_prop_set_data,
                                  NULL);
    object_class_property_add_str(oc, "file",
                                  qcrypto_secret_prop_get_file,
                                  qcrypto_secret_prop_set_file,
                                  NULL);
    object_class_property_add_str(oc, "keyid",
                                  qcrypto_secret_prop_get_keyid,
                                  qcrypto_secret_prop_set_keyid,
                                  NULL);
    object_class_property_add_str(oc, "iv",
                                  qcrypto_secret_prop_get_iv,
                                  qcrypto_secret_prop_set_iv,
                                  NULL);
}


int qcrypto_secret_lookup(const char *secretid,
                          uint8_t **data,
                          size_t *datalen,
                          Error **errp)
{
    Object *obj;
    QCryptoSecret *secret;

    obj = object_resolve_path_component(
        object_get_objects_root(), secretid);
    if (!obj) {
        error_setg(errp, "No secret with id '%s'", secretid);
        return -1;
    }

    secret = (QCryptoSecret *)
        object_dynamic_cast(obj,
                            TYPE_QCRYPTO_SECRET);
    if (!secret) {
        error_setg(errp, "Object with id '%s' is not a secret",
                   secretid);
        return -1;
    }

    if (!secret->rawdata) {
        error_setg(errp, "Secret with id '%s' has no data",
                   secretid);
        return -1;
    }

    *data = g_new0(uint8_t, secret->rawlen + 1);
    memcpy(*data, secret->rawdata, secret->rawlen);
    (*data)[secret->rawlen] = '\0';
    *datalen = secret->rawlen;

    return 0;
}


char *qcrypto_secret_lookup_as_utf8(const char *secretid,
                                    Error **errp)
{
    uint8_t *data;
    size_t datalen;

    if (qcrypto_secret_lookup(secretid,
                              &data,
                              &datalen,
                              errp) < 0) {
        return NULL;
    }

    if (!g_utf8_validate((const gchar*)data, datalen, NULL)) {
        error_setg(errp,
                   "Data from secret %s is not valid UTF-8",
                   secretid);
        g_free(data);
        return NULL;
    }

    return (char *)data;
}


char *qcrypto_secret_lookup_as_base64(const char *secretid,
                                      Error **errp)
{
    uint8_t *data;
    size_t datalen;
    char *ret;

    if (qcrypto_secret_lookup(secretid,
                              &data,
                              &datalen,
                              errp) < 0) {
        return NULL;
    }

    ret = g_base64_encode(data, datalen);
    g_free(data);
    return ret;
}


static const TypeInfo qcrypto_secret_info = {
    .parent = TYPE_OBJECT,
    .name = TYPE_QCRYPTO_SECRET,
    .instance_size = sizeof(QCryptoSecret),
    .instance_finalize = qcrypto_secret_finalize,
    .class_size = sizeof(QCryptoSecretClass),
    .class_init = qcrypto_secret_class_init,
    .interfaces = (InterfaceInfo[]) {
        { TYPE_USER_CREATABLE },
        { }
    }
};


static void
qcrypto_secret_register_types(void)
{
    type_register_static(&qcrypto_secret_info);
}


type_init(qcrypto_secret_register_types);
Commit	Line	Data
ac1d8878 DB	1	/*
	2	* QEMU crypto secret support
	3	*
	4	* Copyright (c) 2015 Red Hat, Inc.
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	18	*
	19	*/
	20
42f7a448	21	#include "qemu/osdep.h"
ac1d8878 DB	22	#include "crypto/secret.h"
ac1d8878 DB	23	#include "crypto/cipher.h"
da34e65c	24	#include "qapi/error.h"
ac1d8878 DB	25	#include "qom/object_interfaces.h"
	26	#include "qemu/base64.h"
	27	#include "trace.h"
	28
	29
	30	static void
	31	qcrypto_secret_load_data(QCryptoSecret *secret,
	32	uint8_t **output,
	33	size_t *outputlen,
	34	Error **errp)
	35	{
	36	char *data = NULL;
	37	size_t length = 0;
	38	GError *gerr = NULL;
	39
	40	*output = NULL;
	41	*outputlen = 0;
	42
	43	if (secret->file) {
	44	if (secret->data) {
	45	error_setg(errp,
	46	"'file' and 'data' are mutually exclusive");
	47	return;
	48	}
	49	if (!g_file_get_contents(secret->file, &data, &length, &gerr)) {
	50	error_setg(errp,
	51	"Unable to read %s: %s",
	52	secret->file, gerr->message);
	53	g_error_free(gerr);
	54	return;
	55	}
	56	output = (uint8_t )data;
	57	*outputlen = length;
	58	} else if (secret->data) {
	59	*outputlen = strlen(secret->data);
	60	output = (uint8_t )g_strdup(secret->data);
	61	} else {
	62	error_setg(errp, "Either 'file' or 'data' must be provided");
	63	}
	64	}
	65
	66
	67	static void qcrypto_secret_decrypt(QCryptoSecret *secret,
	68	const uint8_t *input,
	69	size_t inputlen,
	70	uint8_t **output,
	71	size_t *outputlen,
	72	Error **errp)
	73	{
	74	uint8_t key = NULL, ciphertext = NULL, *iv = NULL;
	75	size_t keylen, ciphertextlen, ivlen;
	76	QCryptoCipher *aes = NULL;
	77	uint8_t *plaintext = NULL;
	78
	79	*output = NULL;
	80	*outputlen = 0;
	81
	82	if (qcrypto_secret_lookup(secret->keyid,
	83	&key, &keylen,
	84	errp) < 0) {
	85	goto cleanup;
	86	}
	87
	88	if (keylen != 32) {
89	error_setg(errp, "Key should be 32 bytes in length");
90	goto cleanup;
91	}
92
93	if (!secret->iv) {
94	error_setg(errp, "IV is required to decrypt secret");
95	goto cleanup;
96	}
97
98	iv = qbase64_decode(secret->iv, -1, &ivlen, errp);
99	if (!iv) {
100	goto cleanup;
101	}
102	if (ivlen != 16) {
103	error_setg(errp, "IV should be 16 bytes in length not %zu",
104	ivlen);
105	goto cleanup;
106	}
107
108	aes = qcrypto_cipher_new(QCRYPTO_CIPHER_ALG_AES_256,
109	QCRYPTO_CIPHER_MODE_CBC,
110	key, keylen,
111	errp);
112	if (!aes) {
113	goto cleanup;
114	}
115
116	if (qcrypto_cipher_setiv(aes, iv, ivlen, errp) < 0) {
117	goto cleanup;
118	}
119
120	if (secret->format == QCRYPTO_SECRET_FORMAT_BASE64) {
121	ciphertext = qbase64_decode((const gchar*)input,
122	inputlen,
123	&ciphertextlen,
124	errp);
125	if (!ciphertext) {
126	goto cleanup;
127	}
128	plaintext = g_new0(uint8_t, ciphertextlen + 1);
129	} else {
130	ciphertextlen = inputlen;
131	plaintext = g_new0(uint8_t, inputlen + 1);
132	}
133	if (qcrypto_cipher_decrypt(aes,
134	ciphertext ? ciphertext : input,
135	plaintext,
136	ciphertextlen,
137	errp) < 0) {
138	plaintext = NULL;
139	goto cleanup;
140	}
141
142	if (plaintext[ciphertextlen - 1] > 16 \|\|
143	plaintext[ciphertextlen - 1] > ciphertextlen) {
144	error_setg(errp, "Incorrect number of padding bytes (%d) "
145	"found on decrypted data",
146	(int)plaintext[ciphertextlen - 1]);
147	g_free(plaintext);
148	plaintext = NULL;
149	goto cleanup;
150	}
151
152	/* Even though plaintext may contain arbitrary NUL
153	* ensure it is explicitly NUL terminated.
154	*/
155	ciphertextlen -= plaintext[ciphertextlen - 1];
156	plaintext[ciphertextlen] = '\0';
157
158	*output = plaintext;
159	*outputlen = ciphertextlen;
160
161	cleanup:
162	g_free(ciphertext);
163	g_free(iv);
164	g_free(key);
165	qcrypto_cipher_free(aes);
166	}
167
168
169	static void qcrypto_secret_decode(const uint8_t *input,
170	size_t inputlen,
171	uint8_t **output,
172	size_t *outputlen,
173	Error **errp)
174	{
175	output = qbase64_decode((const gchar)input,
176	inputlen,
177	outputlen,
178	errp);
179	}
180
181
182	static void
183	qcrypto_secret_prop_set_loaded(Object *obj,
184	bool value,
185	Error **errp)
186	{
187	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
188
189	if (value) {
190	Error *local_err = NULL;
191	uint8_t *input = NULL;
192	size_t inputlen = 0;
193	uint8_t *output = NULL;
194	size_t outputlen = 0;
195
196	qcrypto_secret_load_data(secret, &input, &inputlen, &local_err);
197	if (local_err) {
198	error_propagate(errp, local_err);
199	return;
200	}
201
202	if (secret->keyid) {
203	qcrypto_secret_decrypt(secret, input, inputlen,
204	&output, &outputlen, &local_err);
205	g_free(input);
206	if (local_err) {
207	error_propagate(errp, local_err);
208	return;
209	}
210	input = output;
211	inputlen = outputlen;
212	} else {
213	if (secret->format != QCRYPTO_SECRET_FORMAT_RAW) {
214	qcrypto_secret_decode(input, inputlen,
215	&output, &outputlen, &local_err);
216	g_free(input);
217	if (local_err) {
218	error_propagate(errp, local_err);
219	return;
220	}
221	input = output;
222	inputlen = outputlen;
223	}
224	}
225
226	secret->rawdata = input;
227	secret->rawlen = inputlen;
228	} else {
229	g_free(secret->rawdata);
230	secret->rawlen = 0;
231	}
232	}
233
234
235	static bool
236	qcrypto_secret_prop_get_loaded(Object *obj,
237	Error **errp G_GNUC_UNUSED)
238	{
239	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
240	return secret->data != NULL;
241	}
242
243
244	static void
245	qcrypto_secret_prop_set_format(Object *obj,
246	int value,
247	Error **errp G_GNUC_UNUSED)
248	{
249	QCryptoSecret *creds = QCRYPTO_SECRET(obj);
250
251	creds->format = value;
252	}
253
254
255	static int
256	qcrypto_secret_prop_get_format(Object *obj,
257	Error **errp G_GNUC_UNUSED)
258	{
259	QCryptoSecret *creds = QCRYPTO_SECRET(obj);
260
261	return creds->format;
262	}
263
264
265	static void
266	qcrypto_secret_prop_set_data(Object *obj,
267	const char *value,
268	Error **errp)
269	{
270	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
271
272	g_free(secret->data);
273	secret->data = g_strdup(value);
274	}
275
276
277	static char *
278	qcrypto_secret_prop_get_data(Object *obj,
279	Error **errp)
280	{
281	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
282	return g_strdup(secret->data);
283	}
284
285
286	static void
287	qcrypto_secret_prop_set_file(Object *obj,
288	const char *value,
289	Error **errp)
290	{
291	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
292
293	g_free(secret->file);
294	secret->file = g_strdup(value);
295	}
296
297
298	static char *
299	qcrypto_secret_prop_get_file(Object *obj,
300	Error **errp)
301	{
302	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
303	return g_strdup(secret->file);
304	}
305
306
307	static void
308	qcrypto_secret_prop_set_iv(Object *obj,
309	const char *value,
310	Error **errp)
311	{
312	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
313
314	g_free(secret->iv);
315	secret->iv = g_strdup(value);
316	}
317
318
319	static char *
320	qcrypto_secret_prop_get_iv(Object *obj,
321	Error **errp)
322	{
323	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
324	return g_strdup(secret->iv);
325	}
326
327
328	static void
329	qcrypto_secret_prop_set_keyid(Object *obj,
330	const char *value,
331	Error **errp)
332	{
333	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
334
335	g_free(secret->keyid);
336	secret->keyid = g_strdup(value);
337	}
338
339
340	static char *
341	qcrypto_secret_prop_get_keyid(Object *obj,
342	Error **errp)
343	{
344	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
345	return g_strdup(secret->keyid);
346	}
347
348
349	static void
350	qcrypto_secret_complete(UserCreatable uc, Error *errp)
351	{
352	object_property_set_bool(OBJECT(uc), true, "loaded", errp);
353	}
354
355
ac1d8878 DB	356	static void
	357	qcrypto_secret_finalize(Object *obj)
	358	{
	359	QCryptoSecret *secret = QCRYPTO_SECRET(obj);
	360
	361	g_free(secret->iv);
	362	g_free(secret->file);
	363	g_free(secret->keyid);
	364	g_free(secret->rawdata);
	365	g_free(secret->data);
	366	}
	367
	368	static void
	369	qcrypto_secret_class_init(ObjectClass oc, void data)
	370	{
	371	UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
	372
	373	ucc->complete = qcrypto_secret_complete;
9884abee DB	374
	375	object_class_property_add_bool(oc, "loaded",
	376	qcrypto_secret_prop_get_loaded,
	377	qcrypto_secret_prop_set_loaded,
	378	NULL);
	379	object_class_property_add_enum(oc, "format",
	380	"QCryptoSecretFormat",
f7abe0ec	381	&QCryptoSecretFormat_lookup,
9884abee DB	382	qcrypto_secret_prop_get_format,
	383	qcrypto_secret_prop_set_format,
	384	NULL);
	385	object_class_property_add_str(oc, "data",
	386	qcrypto_secret_prop_get_data,
	387	qcrypto_secret_prop_set_data,
	388	NULL);
	389	object_class_property_add_str(oc, "file",
	390	qcrypto_secret_prop_get_file,
	391	qcrypto_secret_prop_set_file,
	392	NULL);
	393	object_class_property_add_str(oc, "keyid",
	394	qcrypto_secret_prop_get_keyid,
	395	qcrypto_secret_prop_set_keyid,
	396	NULL);
	397	object_class_property_add_str(oc, "iv",
	398	qcrypto_secret_prop_get_iv,
	399	qcrypto_secret_prop_set_iv,
	400	NULL);
ac1d8878 DB	401	}
	402
	403
	404	int qcrypto_secret_lookup(const char *secretid,
	405	uint8_t **data,
	406	size_t *datalen,
	407	Error **errp)
	408	{
	409	Object *obj;
	410	QCryptoSecret *secret;
	411
	412	obj = object_resolve_path_component(
	413	object_get_objects_root(), secretid);
	414	if (!obj) {
	415	error_setg(errp, "No secret with id '%s'", secretid);
	416	return -1;
	417	}
	418
	419	secret = (QCryptoSecret *)
	420	object_dynamic_cast(obj,
	421	TYPE_QCRYPTO_SECRET);
	422	if (!secret) {
	423	error_setg(errp, "Object with id '%s' is not a secret",
	424	secretid);
	425	return -1;
	426	}
	427
	428	if (!secret->rawdata) {
	429	error_setg(errp, "Secret with id '%s' has no data",
	430	secretid);
	431	return -1;
	432	}
	433
d341d9f3	434	*data = g_new0(uint8_t, secret->rawlen + 1);
ac1d8878 DB	435	memcpy(*data, secret->rawdata, secret->rawlen);
	436	(*data)[secret->rawlen] = '\0';
	437	*datalen = secret->rawlen;
	438
	439	return 0;
	440	}
	441
	442
	443	char qcrypto_secret_lookup_as_utf8(const char secretid,
	444	Error **errp)
	445	{
	446	uint8_t *data;
	447	size_t datalen;
	448
	449	if (qcrypto_secret_lookup(secretid,
	450	&data,
	451	&datalen,
	452	errp) < 0) {
	453	return NULL;
	454	}
	455
	456	if (!g_utf8_validate((const gchar*)data, datalen, NULL)) {
	457	error_setg(errp,
	458	"Data from secret %s is not valid UTF-8",
	459	secretid);
	460	g_free(data);
	461	return NULL;
	462	}
	463
	464	return (char *)data;
	465	}
	466
	467
	468	char qcrypto_secret_lookup_as_base64(const char secretid,
	469	Error **errp)
	470	{
	471	uint8_t *data;
	472	size_t datalen;
	473	char *ret;
	474
	475	if (qcrypto_secret_lookup(secretid,
	476	&data,
	477	&datalen,
	478	errp) < 0) {
	479	return NULL;
	480	}
	481
	482	ret = g_base64_encode(data, datalen);
	483	g_free(data);
	484	return ret;
	485	}
	486
	487
	488	static const TypeInfo qcrypto_secret_info = {
	489	.parent = TYPE_OBJECT,
	490	.name = TYPE_QCRYPTO_SECRET,
	491	.instance_size = sizeof(QCryptoSecret),
ac1d8878 DB	492	.instance_finalize = qcrypto_secret_finalize,
	493	.class_size = sizeof(QCryptoSecretClass),
	494	.class_init = qcrypto_secret_class_init,
	495	.interfaces = (InterfaceInfo[]) {
	496	{ TYPE_USER_CREATABLE },
	497	{ }
	498	}
	499	};
	500
	501
	502	static void
	503	qcrypto_secret_register_types(void)
	504	{
	505	type_register_static(&qcrypto_secret_info);
	506	}
	507
	508
	509	type_init(qcrypto_secret_register_types);