Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210330' into...
[qemu/ar7.git] / crypto / secret.c
blob44eaff16f60809771ed27ed26a48cf0f555a9895
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 2.1 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  */
21 #include "qemu/osdep.h"
22 #include "crypto/secret.h"
23 #include "qapi/error.h"
24 #include "qom/object_interfaces.h"
25 #include "qemu/module.h"
26 #include "trace.h"
29 static void
30 qcrypto_secret_load_data(QCryptoSecretCommon *sec_common,
31                          uint8_t **output,
32                          size_t *outputlen,
33                          Error **errp)
35     char *data = NULL;
36     size_t length = 0;
37     GError *gerr = NULL;
39     QCryptoSecret *secret = QCRYPTO_SECRET(sec_common);
41     *output = NULL;
42     *outputlen = 0;
44     if (secret->file) {
45         if (secret->data) {
46             error_setg(errp,
47                        "'file' and 'data' are mutually exclusive");
48             return;
49         }
50         if (!g_file_get_contents(secret->file, &data, &length, &gerr)) {
51             error_setg(errp,
52                        "Unable to read %s: %s",
53                        secret->file, gerr->message);
54             g_error_free(gerr);
55             return;
56         }
57         *output = (uint8_t *)data;
58         *outputlen = length;
59     } else if (secret->data) {
60         *outputlen = strlen(secret->data);
61         *output = (uint8_t *)g_strdup(secret->data);
62     } else {
63         error_setg(errp, "Either 'file' or 'data' must be provided");
64     }
68 static void
69 qcrypto_secret_prop_set_data(Object *obj,
70                              const char *value,
71                              Error **errp)
73     QCryptoSecret *secret = QCRYPTO_SECRET(obj);
75     g_free(secret->data);
76     secret->data = g_strdup(value);
80 static char *
81 qcrypto_secret_prop_get_data(Object *obj,
82                              Error **errp)
84     QCryptoSecret *secret = QCRYPTO_SECRET(obj);
85     return g_strdup(secret->data);
89 static void
90 qcrypto_secret_prop_set_file(Object *obj,
91                              const char *value,
92                              Error **errp)
94     QCryptoSecret *secret = QCRYPTO_SECRET(obj);
96     g_free(secret->file);
97     secret->file = g_strdup(value);
101 static char *
102 qcrypto_secret_prop_get_file(Object *obj,
103                              Error **errp)
105     QCryptoSecret *secret = QCRYPTO_SECRET(obj);
106     return g_strdup(secret->file);
110 static void
111 qcrypto_secret_finalize(Object *obj)
113     QCryptoSecret *secret = QCRYPTO_SECRET(obj);
115     g_free(secret->file);
116     g_free(secret->data);
119 static void
120 qcrypto_secret_class_init(ObjectClass *oc, void *data)
122     QCryptoSecretCommonClass *sic = QCRYPTO_SECRET_COMMON_CLASS(oc);
123     sic->load_data = qcrypto_secret_load_data;
125     object_class_property_add_str(oc, "data",
126                                   qcrypto_secret_prop_get_data,
127                                   qcrypto_secret_prop_set_data);
128     object_class_property_add_str(oc, "file",
129                                   qcrypto_secret_prop_get_file,
130                                   qcrypto_secret_prop_set_file);
134 static const TypeInfo qcrypto_secret_info = {
135     .parent = TYPE_QCRYPTO_SECRET_COMMON,
136     .name = TYPE_QCRYPTO_SECRET,
137     .instance_size = sizeof(QCryptoSecret),
138     .instance_finalize = qcrypto_secret_finalize,
139     .class_size = sizeof(QCryptoSecretClass),
140     .class_init = qcrypto_secret_class_init,
144 static void
145 qcrypto_secret_register_types(void)
147     type_register_static(&qcrypto_secret_info);
151 type_init(qcrypto_secret_register_types);