| 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, const 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); |