Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-6.2-pull-request...
[qemu.git] / crypto / secret.c
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 */
20
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"
27
28
29 static void
30 qcrypto_secret_load_data(QCryptoSecretCommon *sec_common,
31 uint8_t **output,
32 size_t *outputlen,
33 Error **errp)
34 {
35 char *data = NULL;
36 size_t length = 0;
37 GError *gerr = NULL;
38
39 QCryptoSecret *secret = QCRYPTO_SECRET(sec_common);
40
41 *output = NULL;
42 *outputlen = 0;
43
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 }
65 }
66
67
68 static void
69 qcrypto_secret_prop_set_data(Object *obj,
70 const char *value,
71 Error **errp)
72 {
73 QCryptoSecret *secret = QCRYPTO_SECRET(obj);
74
75 g_free(secret->data);
76 secret->data = g_strdup(value);
77 }
78
79
80 static char *
81 qcrypto_secret_prop_get_data(Object *obj,
82 Error **errp)
83 {
84 QCryptoSecret *secret = QCRYPTO_SECRET(obj);
85 return g_strdup(secret->data);
86 }
87
88
89 static void
90 qcrypto_secret_prop_set_file(Object *obj,
91 const char *value,
92 Error **errp)
93 {
94 QCryptoSecret *secret = QCRYPTO_SECRET(obj);
95
96 g_free(secret->file);
97 secret->file = g_strdup(value);
98 }
99
100
101 static char *
102 qcrypto_secret_prop_get_file(Object *obj,
103 Error **errp)
104 {
105 QCryptoSecret *secret = QCRYPTO_SECRET(obj);
106 return g_strdup(secret->file);
107 }
108
109
110 static void
111 qcrypto_secret_finalize(Object *obj)
112 {
113 QCryptoSecret *secret = QCRYPTO_SECRET(obj);
114
115 g_free(secret->file);
116 g_free(secret->data);
117 }
118
119 static void
120 qcrypto_secret_class_init(ObjectClass *oc, void *data)
121 {
122 QCryptoSecretCommonClass *sic = QCRYPTO_SECRET_COMMON_CLASS(oc);
123 sic->load_data = qcrypto_secret_load_data;
124
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);
131 }
132
133
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,
141 };
142
143
144 static void
145 qcrypto_secret_register_types(void)
146 {
147 type_register_static(&qcrypto_secret_info);
148 }
149
150
151 type_init(qcrypto_secret_register_types);