aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--crypto/Makefile.objs1
-rw-r--r--crypto/secret.c513
-rw-r--r--crypto/tlscredsx509.c48
-rw-r--r--include/crypto/secret.h148
-rw-r--r--include/crypto/tlscredsx509.h1
-rw-r--r--include/qemu/base64.h58
-rw-r--r--qapi-schema.json2
-rw-r--r--qapi/crypto.json14
-rw-r--r--qemu-char.c8
-rw-r--r--qemu-options.hx85
-rw-r--r--qga/commands-posix.c11
-rw-r--r--qga/commands-win32.c11
-rw-r--r--qga/commands.c13
-rw-r--r--qmp-commands.hx2
-rw-r--r--tests/.gitignore2
-rw-r--r--tests/Makefile5
-rw-r--r--tests/test-base64.c109
-rw-r--r--tests/test-crypto-secret.c452
-rw-r--r--util/Makefile.objs1
-rw-r--r--util/base64.c60
20 files changed, 1533 insertions, 11 deletions
diff --git a/crypto/Makefile.objs b/crypto/Makefile.objs
index b2a0e0b..a3135f1 100644
--- a/crypto/Makefile.objs
+++ b/crypto/Makefile.objs
@@ -7,6 +7,7 @@ crypto-obj-y += tlscreds.o
crypto-obj-y += tlscredsanon.o
crypto-obj-y += tlscredsx509.o
crypto-obj-y += tlssession.o
+crypto-obj-y += secret.o
# Let the userspace emulators avoid linking gnutls/etc
crypto-aes-obj-y = aes.o
diff --git a/crypto/secret.c b/crypto/secret.c
new file mode 100644
index 0000000..9a9257a
--- /dev/null
+++ b/crypto/secret.c
@@ -0,0 +1,513 @@
+/*
+ * 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 "crypto/secret.h"
+#include "crypto/cipher.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_init(Object *obj)
+{
+ object_property_add_bool(obj, "loaded",
+ qcrypto_secret_prop_get_loaded,
+ qcrypto_secret_prop_set_loaded,
+ NULL);
+ object_property_add_enum(obj, "format",
+ "QCryptoSecretFormat",
+ QCryptoSecretFormat_lookup,
+ qcrypto_secret_prop_get_format,
+ qcrypto_secret_prop_set_format,
+ NULL);
+ object_property_add_str(obj, "data",
+ qcrypto_secret_prop_get_data,
+ qcrypto_secret_prop_set_data,
+ NULL);
+ object_property_add_str(obj, "file",
+ qcrypto_secret_prop_get_file,
+ qcrypto_secret_prop_set_file,
+ NULL);
+ object_property_add_str(obj, "keyid",
+ qcrypto_secret_prop_get_keyid,
+ qcrypto_secret_prop_set_keyid,
+ NULL);
+ object_property_add_str(obj, "iv",
+ qcrypto_secret_prop_get_iv,
+ qcrypto_secret_prop_set_iv,
+ NULL);
+}
+
+
+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;
+}
+
+
+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, 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_init = qcrypto_secret_init,
+ .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);
diff --git a/crypto/tlscredsx509.c b/crypto/tlscredsx509.c
index 26f18cb..d58fdea 100644
--- a/crypto/tlscredsx509.c
+++ b/crypto/tlscredsx509.c
@@ -20,6 +20,7 @@
#include "crypto/tlscredsx509.h"
#include "crypto/tlscredspriv.h"
+#include "crypto/secret.h"
#include "qom/object_interfaces.h"
#include "trace.h"
@@ -607,9 +608,30 @@ qcrypto_tls_creds_x509_load(QCryptoTLSCredsX509 *creds,
}
if (cert != NULL && key != NULL) {
+#if GNUTLS_VERSION_NUMBER >= 0x030111
+ char *password = NULL;
+ if (creds->passwordid) {
+ password = qcrypto_secret_lookup_as_utf8(creds->passwordid,
+ errp);
+ if (!password) {
+ goto cleanup;
+ }
+ }
+ ret = gnutls_certificate_set_x509_key_file2(creds->data,
+ cert, key,
+ GNUTLS_X509_FMT_PEM,
+ password,
+ 0);
+ g_free(password);
+#else /* GNUTLS_VERSION_NUMBER < 0x030111 */
+ if (creds->passwordid) {
+ error_setg(errp, "PKCS8 decryption requires GNUTLS >= 3.1.11");
+ goto cleanup;
+ }
ret = gnutls_certificate_set_x509_key_file(creds->data,
cert, key,
GNUTLS_X509_FMT_PEM);
+#endif /* GNUTLS_VERSION_NUMBER < 0x030111 */
if (ret < 0) {
error_setg(errp, "Cannot load certificate '%s' & key '%s': %s",
cert, key, gnutls_strerror(ret));
@@ -737,6 +759,27 @@ qcrypto_tls_creds_x509_prop_set_sanity(Object *obj,
}
+static void
+qcrypto_tls_creds_x509_prop_set_passwordid(Object *obj,
+ const char *value,
+ Error **errp G_GNUC_UNUSED)
+{
+ QCryptoTLSCredsX509 *creds = QCRYPTO_TLS_CREDS_X509(obj);
+
+ creds->passwordid = g_strdup(value);
+}
+
+
+static char *
+qcrypto_tls_creds_x509_prop_get_passwordid(Object *obj,
+ Error **errp G_GNUC_UNUSED)
+{
+ QCryptoTLSCredsX509 *creds = QCRYPTO_TLS_CREDS_X509(obj);
+
+ return g_strdup(creds->passwordid);
+}
+
+
static bool
qcrypto_tls_creds_x509_prop_get_sanity(Object *obj,
Error **errp G_GNUC_UNUSED)
@@ -769,6 +812,10 @@ qcrypto_tls_creds_x509_init(Object *obj)
qcrypto_tls_creds_x509_prop_get_sanity,
qcrypto_tls_creds_x509_prop_set_sanity,
NULL);
+ object_property_add_str(obj, "passwordid",
+ qcrypto_tls_creds_x509_prop_get_passwordid,
+ qcrypto_tls_creds_x509_prop_set_passwordid,
+ NULL);
}
@@ -777,6 +824,7 @@ qcrypto_tls_creds_x509_finalize(Object *obj)
{
QCryptoTLSCredsX509 *creds = QCRYPTO_TLS_CREDS_X509(obj);
+ g_free(creds->passwordid);
qcrypto_tls_creds_x509_unload(creds);
}
diff --git a/include/crypto/secret.h b/include/crypto/secret.h
new file mode 100644
index 0000000..913519a
--- /dev/null
+++ b/include/crypto/secret.h
@@ -0,0 +1,148 @@
+/*
+ * 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/>.
+ *
+ */
+
+#ifndef QCRYPTO_SECRET_H__
+#define QCRYPTO_SECRET_H__
+
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "qom/object.h"
+
+#define TYPE_QCRYPTO_SECRET "secret"
+#define QCRYPTO_SECRET(obj) \
+ OBJECT_CHECK(QCryptoSecret, (obj), TYPE_QCRYPTO_SECRET)
+
+typedef struct QCryptoSecret QCryptoSecret;
+typedef struct QCryptoSecretClass QCryptoSecretClass;
+
+/**
+ * QCryptoSecret:
+ *
+ * The QCryptoSecret object provides storage of secrets,
+ * which may be user passwords, encryption keys or any
+ * other kind of sensitive data that is represented as
+ * a sequence of bytes.
+ *
+ * The sensitive data associated with the secret can
+ * be provided directly via the 'data' property, or
+ * indirectly via the 'file' property. In the latter
+ * case there is support for file descriptor passing
+ * via the usual /dev/fdset/NN syntax that QEMU uses.
+ *
+ * The data for a secret can be provided in two formats,
+ * either as a UTF-8 string (the default), or as base64
+ * encoded 8-bit binary data. The latter is appropriate
+ * for raw encryption keys, while the former is appropriate
+ * for user entered passwords.
+ *
+ * The data may be optionally encrypted with AES-256-CBC,
+ * and the decryption key provided by another
+ * QCryptoSecret instance identified by the 'keyid'
+ * property. When passing sensitive data directly
+ * via the 'data' property it is strongly recommended
+ * to use the AES encryption facility to prevent the
+ * sensitive data being exposed in the process listing
+ * or system log files.
+ *
+ * Providing data directly, insecurely (suitable for
+ * ad hoc developer testing only)
+ *
+ * $QEMU -object secret,id=sec0,data=letmein
+ *
+ * Providing data indirectly:
+ *
+ * # printf "letmein" > password.txt
+ * # $QEMU \
+ * -object secret,id=sec0,file=password.txt
+ *
+ * Using a master encryption key with data.
+ *
+ * The master key needs to be created as 32 secure
+ * random bytes (optionally base64 encoded)
+ *
+ * # openssl rand -base64 32 > key.b64
+ * # KEY=$(base64 -d key.b64 | hexdump -v -e '/1 "%02X"')
+ *
+ * Each secret to be encrypted needs to have a random
+ * initialization vector generated. These do not need
+ * to be kept secret
+ *
+ * # openssl rand -base64 16 > iv.b64
+ * # IV=$(base64 -d iv.b64 | hexdump -v -e '/1 "%02X"')
+ *
+ * A secret to be defined can now be encrypted
+ *
+ * # SECRET=$(printf "letmein" |
+ * openssl enc -aes-256-cbc -a -K $KEY -iv $IV)
+ *
+ * When launching QEMU, create a master secret pointing
+ * to key.b64 and specify that to be used to decrypt
+ * the user password
+ *
+ * # $QEMU \
+ * -object secret,id=secmaster0,format=base64,file=key.b64 \
+ * -object secret,id=sec0,keyid=secmaster0,format=base64,\
+ * data=$SECRET,iv=$(<iv.b64)
+ *
+ * When encrypting, the data can still be provided via an
+ * external file, in which case it is possible to use either
+ * raw binary data, or base64 encoded. This example uses
+ * raw format
+ *
+ * # printf "letmein" |
+ * openssl enc -aes-256-cbc -K $KEY -iv $IV -o pw.aes
+ * # $QEMU \
+ * -object secret,id=secmaster0,format=base64,file=key.b64 \
+ * -object secret,id=sec0,keyid=secmaster0,\
+ * file=pw.aes,iv=$(<iv.b64)
+ *
+ * Note that the ciphertext can be in either raw or base64
+ * format, as indicated by the 'format' parameter, but the
+ * plaintext resulting from decryption is expected to always
+ * be in raw format.
+ */
+
+struct QCryptoSecret {
+ Object parent_obj;
+ uint8_t *rawdata;
+ size_t rawlen;
+ QCryptoSecretFormat format;
+ char *data;
+ char *file;
+ char *keyid;
+ char *iv;
+};
+
+
+struct QCryptoSecretClass {
+ ObjectClass parent_class;
+};
+
+
+extern int qcrypto_secret_lookup(const char *secretid,
+ uint8_t **data,
+ size_t *datalen,
+ Error **errp);
+extern char *qcrypto_secret_lookup_as_utf8(const char *secretid,
+ Error **errp);
+extern char *qcrypto_secret_lookup_as_base64(const char *secretid,
+ Error **errp);
+
+#endif /* QCRYPTO_SECRET_H__ */
diff --git a/include/crypto/tlscredsx509.h b/include/crypto/tlscredsx509.h
index b9785fd..25796d7 100644
--- a/include/crypto/tlscredsx509.h
+++ b/include/crypto/tlscredsx509.h
@@ -101,6 +101,7 @@ struct QCryptoTLSCredsX509 {
gnutls_certificate_credentials_t data;
#endif
bool sanityCheck;
+ char *passwordid;
};
diff --git a/include/qemu/base64.h b/include/qemu/base64.h
new file mode 100644
index 0000000..793708d
--- /dev/null
+++ b/include/qemu/base64.h
@@ -0,0 +1,58 @@
+/*
+ * QEMU base64 helpers
+ *
+ * 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/>.
+ *
+ */
+
+#ifndef QEMU_BASE64_H__
+#define QEMU_BASE64_H__
+
+#include "qemu-common.h"
+
+
+/**
+ * qbase64_decode:
+ * @input: the (possibly) base64 encoded text
+ * @in_len: length of @input or -1 if NUL terminated
+ * @out_len: filled with length of decoded data
+ * @errp: pointer to a NULL-initialized error object
+ *
+ * Attempt to decode the (possibly) base64 encoded
+ * text provided in @input. If the @input text may
+ * contain embedded NUL characters, or may not be
+ * NUL terminated, then @in_len must be set to the
+ * known size of the @input buffer.
+ *
+ * Note that embedded NULs, or lack of a NUL terminator
+ * are considered invalid base64 data and errors
+ * will be reported to this effect.
+ *
+ * If decoding is successful, the decoded data will
+ * be returned and @out_len set to indicate the
+ * number of bytes in the decoded data. The caller
+ * must use g_free() to free the returned data when
+ * it is no longer required.
+ *
+ * Returns: the decoded data or NULL
+ */
+uint8_t *qbase64_decode(const char *input,
+ size_t in_len,
+ size_t *out_len,
+ Error **errp);
+
+
+#endif /* QEMU_BUFFER_H__ */
diff --git a/qapi-schema.json b/qapi-schema.json
index 516b145..2e31733 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -295,8 +295,6 @@
# @format: #optional data encoding (default 'utf8').
# - base64: data must be base64 encoded text. Its binary
# decoding gets written.
-# Bug: invalid base64 is currently not rejected.
-# Whitespace *is* invalid.
# - utf8: data's UTF-8 encoding is written
# - data itself is always Unicode regardless of format, like
# any other string.
diff --git a/qapi/crypto.json b/qapi/crypto.json
index b058b14..4012659 100644
--- a/qapi/crypto.json
+++ b/qapi/crypto.json
@@ -19,3 +19,17 @@
{ 'enum': 'QCryptoTLSCredsEndpoint',
'prefix': 'QCRYPTO_TLS_CREDS_ENDPOINT',
'data': ['client', 'server']}
+
+
+##
+# QCryptoSecretFormat:
+#
+# The data format that the secret is provided in
+#
+# @raw: raw bytes. When encoded in JSON only valid UTF-8 sequences can be used
+# @base64: arbitrary base64 encoded binary data
+# Since: 2.6
+##
+{ 'enum': 'QCryptoSecretFormat',
+ 'prefix': 'QCRYPTO_SECRET_FORMAT',
+ 'data': ['raw', 'base64']}
diff --git a/qemu-char.c b/qemu-char.c
index 66703e3..00a7526 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -32,6 +32,7 @@
#include "qapi/qmp-input-visitor.h"
#include "qapi/qmp-output-visitor.h"
#include "qapi-visit.h"
+#include "qemu/base64.h"
#include <unistd.h>
#include <fcntl.h>
@@ -3264,7 +3265,12 @@ void qmp_ringbuf_write(const char *device, const char *data,
}
if (has_format && (format == DATA_FORMAT_BASE64)) {
- write_data = g_base64_decode(data, &write_count);
+ write_data = qbase64_decode(data, -1,
+ &write_count,
+ errp);
+ if (!write_data) {
+ return;
+ }
} else {
write_data = (uint8_t *)data;
write_count = strlen(data);
diff --git a/qemu-options.hx b/qemu-options.hx
index 5affc82e..49afe6c 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3627,7 +3627,7 @@ expensive operation that consumes random pool entropy, so it is
recommended that a persistent set of parameters be generated
upfront and saved.
-@item -object tls-creds-x509,id=@var{id},endpoint=@var{endpoint},dir=@var{/path/to/cred/dir},verify-peer=@var{on|off}
+@item -object tls-creds-x509,id=@var{id},endpoint=@var{endpoint},dir=@var{/path/to/cred/dir},verify-peer=@var{on|off},passwordid=@var{id}
Creates a TLS anonymous credentials object, which can be used to provide
TLS support on network backends. The @option{id} parameter is a unique
@@ -3654,6 +3654,12 @@ in PEM format, in filenames @var{ca-cert.pem}, @var{ca-crl.pem} (optional),
@var{server-cert.pem} (only servers), @var{server-key.pem} (only servers),
@var{client-cert.pem} (only clients), and @var{client-key.pem} (only clients).
+For the @var{server-key.pem} and @var{client-key.pem} files which
+contain sensitive private keys, it is possible to use an encrypted
+version by providing the @var{passwordid} parameter. This provides
+the ID of a previously created @code{secret} object containing the
+password for decryption.
+
@item -object filter-buffer,id=@var{id},netdev=@var{netdevid},interval=@var{t}[,queue=@var{all|rx|tx}]
Interval @var{t} can't be 0, this filter batches the packet delivery: all
@@ -3678,6 +3684,83 @@ Dump the network traffic on netdev @var{dev} to the file specified by
The file format is libpcap, so it can be analyzed with tools such as tcpdump
or Wireshark.
+@item -object secret,id=@var{id},data=@var{string},format=@var{raw|base64}[,keyid=@var{secretid},iv=@var{string}]
+@item -object secret,id=@var{id},file=@var{filename},format=@var{raw|base64}[,keyid=@var{secretid},iv=@var{string}]
+
+Defines a secret to store a password, encryption key, or some other sensitive
+data. The sensitive data can either be passed directly via the @var{data}
+parameter, or indirectly via the @var{file} parameter. Using the @var{data}
+parameter is insecure unless the sensitive data is encrypted.
+
+The sensitive data can be provided in raw format (the default), or base64.
+When encoded as JSON, the raw format only supports valid UTF-8 characters,
+so base64 is recommended for sending binary data. QEMU will convert from
+which ever format is provided to the format it needs internally. eg, an
+RBD password can be provided in raw format, even though it will be base64
+encoded when passed onto the RBD sever.
+
+For added protection, it is possible to encrypt the data associated with
+a secret using the AES-256-CBC cipher. Use of encryption is indicated
+by providing the @var{keyid} and @var{iv} parameters. The @var{keyid}
+parameter provides the ID of a previously defined secret that contains
+the AES-256 decryption key. This key should be 32-bytes long and be
+base64 encoded. The @var{iv} parameter provides the random initialization
+vector used for encryption of this particular secret and should be a
+base64 encrypted string of the 32-byte IV.
+
+The simplest (insecure) usage is to provide the secret inline
+
+@example
+
+ # $QEMU -object secret,id=sec0,data=letmein,format=raw
+
+@end example
+
+The simplest secure usage is to provide the secret via a file
+
+ # echo -n "letmein" > mypasswd.txt
+ # $QEMU -object secret,id=sec0,file=mypasswd.txt,format=raw
+
+For greater security, AES-256-CBC should be used. To illustrate usage,
+consider the openssl command line tool which can encrypt the data. Note
+that when encrypting, the plaintext must be padded to the cipher block
+size (32 bytes) using the standard PKCS#5/6 compatible padding algorithm.
+
+First a master key needs to be created in base64 encoding:
+
+@example
+ # openssl rand -base64 32 > key.b64
+ # KEY=$(base64 -d key.b64 | hexdump -v -e '/1 "%02X"')
+@end example
+
+Each secret to be encrypted needs to have a random initialization vector
+generated. These do not need to be kept secret
+
+@example
+ # openssl rand -base64 16 > iv.b64
+ # IV=$(base64 -d iv.b64 | hexdump -v -e '/1 "%02X"')
+@end example
+
+The secret to be defined can now be encrypted, in this case we're
+telling openssl to base64 encode the result, but it could be left
+as raw bytes if desired.
+
+@example
+ # SECRET=$(echo -n "letmein" |
+ openssl enc -aes-256-cbc -a -K $KEY -iv $IV)
+@end example
+
+When launching QEMU, create a master secret pointing to @code{key.b64}
+and specify that to be used to decrypt the user password. Pass the
+contents of @code{iv.b64} to the second secret
+
+@example
+ # $QEMU \
+ -object secret,id=secmaster0,format=base64,file=key.b64 \
+ -object secret,id=sec0,keyid=secmaster0,format=base64,\
+ data=$SECRET,iv=$(<iv.b64)
+@end example
+
@end table
ETEXI
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index c2ff970..8fe708f 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -29,6 +29,7 @@
#include "qemu/queue.h"
#include "qemu/host-utils.h"
#include "qemu/sockets.h"
+#include "qemu/base64.h"
#ifndef CONFIG_HAS_ENVIRON
#ifdef __APPLE__
@@ -525,7 +526,10 @@ GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
gfh->state = RW_STATE_NEW;
}
- buf = g_base64_decode(buf_b64, &buf_len);
+ buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
+ if (!buf) {
+ return NULL;
+ }
if (!has_count) {
count = buf_len;
@@ -1963,7 +1967,10 @@ void qmp_guest_set_user_password(const char *username,
char *chpasswddata = NULL;
size_t chpasswdlen;
- rawpasswddata = (char *)g_base64_decode(password, &rawpasswdlen);
+ rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
+ if (!rawpasswddata) {
+ return;
+ }
rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
rawpasswddata[rawpasswdlen] = '\0';
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 0654fe4..61ffbdf 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -34,6 +34,7 @@
#include "qapi/qmp/qerror.h"
#include "qemu/queue.h"
#include "qemu/host-utils.h"
+#include "qemu/base64.h"
#ifndef SHTDN_REASON_FLAG_PLANNED
#define SHTDN_REASON_FLAG_PLANNED 0x80000000
@@ -357,7 +358,10 @@ GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
return NULL;
}
fh = gfh->fh;
- buf = g_base64_decode(buf_b64, &buf_len);
+ buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
+ if (!buf) {
+ return NULL;
+ }
if (!has_count) {
count = buf_len;
@@ -1294,7 +1298,10 @@ void qmp_guest_set_user_password(const char *username,
return;
}
- rawpasswddata = (char *)g_base64_decode(password, &rawpasswdlen);
+ rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp);
+ if (!rawpasswddata) {
+ return;
+ }
rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1);
rawpasswddata[rawpasswdlen] = '\0';
diff --git a/qga/commands.c b/qga/commands.c
index bb73e7d..58568d8 100644
--- a/qga/commands.c
+++ b/qga/commands.c
@@ -14,6 +14,7 @@
#include "qga/guest-agent-core.h"
#include "qga-qmp-commands.h"
#include "qapi/qmp/qerror.h"
+#include "qemu/base64.h"
/* Maximum captured guest-exec out_data/err_data - 16MB */
#define GUEST_EXEC_MAX_OUTPUT (16*1024*1024)
@@ -393,10 +394,19 @@ GuestExec *qmp_guest_exec(const char *path,
GIOChannel *in_ch, *out_ch, *err_ch;
GSpawnFlags flags;
bool has_output = (has_capture_output && capture_output);
+ uint8_t *input = NULL;
+ size_t ninput = 0;
arglist.value = (char *)path;
arglist.next = has_arg ? arg : NULL;
+ if (has_input_data) {
+ input = qbase64_decode(input_data, -1, &ninput, err);
+ if (!input) {
+ return NULL;
+ }
+ }
+
argv = guest_exec_get_args(&arglist, true);
envp = has_env ? guest_exec_get_args(env, false) : NULL;
@@ -425,7 +435,8 @@ GuestExec *qmp_guest_exec(const char *path,
g_child_watch_add(pid, guest_exec_child_watch, gei);
if (has_input_data) {
- gei->in.data = g_base64_decode(input_data, &gei->in.size);
+ gei->in.data = input;
+ gei->in.size = ninput;
#ifdef G_OS_WIN32
in_ch = g_io_channel_win32_new_fd(in_fd);
#else
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 6f3a25d..7b235ee 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -512,8 +512,6 @@ Arguments:
- "data": data to write (json-string)
- "format": data format (json-string, optional)
- Possible values: "utf8" (default), "base64"
- Bug: invalid base64 is currently not rejected.
- Whitespace *is* invalid.
Example:
diff --git a/tests/.gitignore b/tests/.gitignore
index 77aaba6..787c95c 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -8,11 +8,13 @@ check-qom-interface
check-qom-proplist
rcutorture
test-aio
+test-base64
test-bitops
test-blockjob-txn
test-coroutine
test-crypto-cipher
test-crypto-hash
+test-crypto-secret
test-crypto-tlscredsx509
test-crypto-tlscredsx509-work/
test-crypto-tlscredsx509-certs/
diff --git a/tests/Makefile b/tests/Makefile
index 6ff4627..7d2a0d3 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -80,6 +80,7 @@ check-unit-y += tests/test-write-threshold$(EXESUF)
gcov-files-test-write-threshold-y = block/write-threshold.c
check-unit-$(CONFIG_GNUTLS_HASH) += tests/test-crypto-hash$(EXESUF)
check-unit-y += tests/test-crypto-cipher$(EXESUF)
+check-unit-y += tests/test-crypto-secret$(EXESUF)
check-unit-$(CONFIG_GNUTLS) += tests/test-crypto-tlscredsx509$(EXESUF)
check-unit-$(CONFIG_GNUTLS) += tests/test-crypto-tlssession$(EXESUF)
check-unit-$(CONFIG_LINUX) += tests/test-qga$(EXESUF)
@@ -90,6 +91,7 @@ check-unit-y += tests/test-io-channel-file$(EXESUF)
check-unit-$(CONFIG_GNUTLS) += tests/test-io-channel-tls$(EXESUF)
check-unit-y += tests/test-io-channel-command$(EXESUF)
check-unit-y += tests/test-io-channel-buffer$(EXESUF)
+check-unit-y += tests/test-base64$(EXESUF)
check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
@@ -423,6 +425,8 @@ tests/test-vmstate$(EXESUF): tests/test-vmstate.o \
$(test-qom-obj-y)
tests/test-timed-average$(EXESUF): tests/test-timed-average.o qemu-timer.o \
$(test-util-obj-y)
+tests/test-base64$(EXESUF): tests/test-base64.o \
+ libqemuutil.a libqemustub.a
tests/test-qapi-types.c tests/test-qapi-types.h :\
$(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
@@ -464,6 +468,7 @@ tests/test-mul64$(EXESUF): tests/test-mul64.o $(test-util-obj-y)
tests/test-bitops$(EXESUF): tests/test-bitops.o $(test-util-obj-y)
tests/test-crypto-hash$(EXESUF): tests/test-crypto-hash.o $(test-crypto-obj-y)
tests/test-crypto-cipher$(EXESUF): tests/test-crypto-cipher.o $(test-crypto-obj-y)
+tests/test-crypto-secret$(EXESUF): tests/test-crypto-secret.o $(test-crypto-obj-y)
tests/crypto-tls-x509-helpers.o-cflags := $(TASN1_CFLAGS)
tests/crypto-tls-x509-helpers.o-libs := $(TASN1_LIBS)
diff --git a/tests/test-base64.c b/tests/test-base64.c
new file mode 100644
index 0000000..a0ca2d8
--- /dev/null
+++ b/tests/test-base64.c
@@ -0,0 +1,109 @@
+/*
+ * QEMU base64 helper test
+ *
+ * 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 <glib.h>
+
+#include "qemu/base64.h"
+
+
+static void test_base64_good(void)
+{
+ const char input[] =
+ "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW\n"
+ "lzc2VkIHRoZSBzY29ycGlvbi4=";
+ const char expect[] = "Because we focused on the snake, "
+ "we missed the scorpion.";
+
+ size_t len;
+ uint8_t *actual = qbase64_decode(input,
+ -1,
+ &len,
+ &error_abort);
+
+ g_assert(actual != NULL);
+ g_assert_cmpint(len, ==, strlen(expect));
+ g_assert_cmpstr((char *)actual, ==, expect);
+ g_free(actual);
+}
+
+
+static void test_base64_bad(const char *input,
+ size_t input_len)
+{
+ size_t len;
+ Error *err = NULL;
+ uint8_t *actual = qbase64_decode(input,
+ input_len,
+ &len,
+ &err);
+
+ g_assert(err != NULL);
+ g_assert(actual == NULL);
+ g_assert_cmpint(len, ==, 0);
+ error_free(err);
+}
+
+
+static void test_base64_embedded_nul(void)
+{
+ /* We put a NUL character in the middle of the base64
+ * text which is invalid data, given the expected length */
+ const char input[] =
+ "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW\0"
+ "lzc2VkIHRoZSBzY29ycGlvbi4=";
+
+ test_base64_bad(input, G_N_ELEMENTS(input) - 1);
+}
+
+
+static void test_base64_not_nul_terminated(void)
+{
+ const char input[] =
+ "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW\n"
+ "lzc2VkIHRoZSBzY29ycGlvbi4=";
+
+ /* Using '-2' to make us drop the trailing NUL, thus
+ * creating an invalid base64 sequence for decoding */
+ test_base64_bad(input, G_N_ELEMENTS(input) - 2);
+}
+
+
+static void test_base64_invalid_chars(void)
+{
+ /* We put a single quote character in the middle
+ * of the base64 text which is invalid data */
+ const char input[] =
+ "QmVjYXVzZSB3ZSBmb2N1c2VkIG9uIHRoZSBzbmFrZSwgd2UgbW'"
+ "lzc2VkIHRoZSBzY29ycGlvbi4=";
+
+ test_base64_bad(input, strlen(input));
+}
+
+
+int main(int argc, char **argv)
+{
+ g_test_init(&argc, &argv, NULL);
+ g_test_add_func("/util/base64/good", test_base64_good);
+ g_test_add_func("/util/base64/embedded-nul", test_base64_embedded_nul);
+ g_test_add_func("/util/base64/not-nul-terminated",
+ test_base64_not_nul_terminated);
+ g_test_add_func("/util/base64/invalid-chars", test_base64_invalid_chars);
+ return g_test_run();
+}
diff --git a/tests/test-crypto-secret.c b/tests/test-crypto-secret.c
new file mode 100644
index 0000000..a49c8e3
--- /dev/null
+++ b/tests/test-crypto-secret.c
@@ -0,0 +1,452 @@
+/*
+ * QEMU Crypto secret handling
+ *
+ * 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 <glib.h>
+
+#include "crypto/init.h"
+#include "crypto/secret.h"
+
+static void test_secret_direct(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "123456",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "123456");
+
+ object_unparent(sec);
+ g_free(pw);
+}
+
+
+static void test_secret_indirect_good(void)
+{
+ Object *sec;
+ char *fname = NULL;
+ int fd = g_file_open_tmp("secretXXXXXX",
+ &fname,
+ NULL);
+
+ g_assert(fd >= 0);
+ g_assert_nonnull(fname);
+
+ g_assert(write(fd, "123456", 6) == 6);
+
+ sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "file", fname,
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "123456");
+
+ object_unparent(sec);
+ g_free(pw);
+ close(fd);
+ g_free(fname);
+}
+
+
+static void test_secret_indirect_badfile(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ NULL,
+ "file", "does-not-exist",
+ NULL);
+
+ g_assert(sec == NULL);
+}
+
+
+static void test_secret_indirect_emptyfile(void)
+{
+ Object *sec;
+ char *fname = NULL;
+ int fd = g_file_open_tmp("secretXXXXXX",
+ &fname,
+ NULL);
+
+ g_assert(fd >= 0);
+ g_assert_nonnull(fname);
+
+ sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "file", fname,
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "");
+
+ object_unparent(sec);
+ g_free(pw);
+ close(fd);
+ g_free(fname);
+}
+
+
+static void test_secret_noconv_base64_good(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "MTIzNDU2",
+ "format", "base64",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_base64("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "MTIzNDU2");
+
+ object_unparent(sec);
+ g_free(pw);
+}
+
+
+static void test_secret_noconv_base64_bad(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ NULL,
+ "data", "MTI$NDU2",
+ "format", "base64",
+ NULL);
+
+ g_assert(sec == NULL);
+}
+
+
+static void test_secret_noconv_utf8(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "123456",
+ "format", "raw",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "123456");
+
+ object_unparent(sec);
+ g_free(pw);
+}
+
+
+static void test_secret_conv_base64_utf8valid(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "MTIzNDU2",
+ "format", "base64",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "123456");
+
+ object_unparent(sec);
+ g_free(pw);
+}
+
+
+static void test_secret_conv_base64_utf8invalid(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "f0VMRgIBAQAAAA==",
+ "format", "base64",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ NULL);
+ g_assert(pw == NULL);
+
+ object_unparent(sec);
+}
+
+
+static void test_secret_conv_utf8_base64(void)
+{
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "123456",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_base64("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "MTIzNDU2");
+
+ object_unparent(sec);
+ g_free(pw);
+}
+
+
+static void test_secret_crypt_raw(void)
+{
+ Object *master = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "master",
+ &error_abort,
+ "data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
+ "format", "base64",
+ NULL);
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data",
+ "\xCC\xBF\xF7\x09\x46\x19\x0B\x52\x2A\x3A\xB4\x6B\xCD\x7A\xB0\xB0",
+ "format", "raw",
+ "keyid", "master",
+ "iv", "0I7Gw/TKuA+Old2W2apQ3g==",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "123456");
+
+ object_unparent(sec);
+ object_unparent(master);
+ g_free(pw);
+}
+
+
+static void test_secret_crypt_base64(void)
+{
+ Object *master = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "master",
+ &error_abort,
+ "data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
+ "format", "base64",
+ NULL);
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ &error_abort,
+ "data", "zL/3CUYZC1IqOrRrzXqwsA==",
+ "format", "base64",
+ "keyid", "master",
+ "iv", "0I7Gw/TKuA+Old2W2apQ3g==",
+ NULL);
+
+ char *pw = qcrypto_secret_lookup_as_utf8("sec0",
+ &error_abort);
+
+ g_assert_cmpstr(pw, ==, "123456");
+
+ object_unparent(sec);
+ object_unparent(master);
+ g_free(pw);
+}
+
+
+static void test_secret_crypt_short_key(void)
+{
+ Object *master = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "master",
+ &error_abort,
+ "data", "9miloPQCzGy+TL6aonfzVc",
+ "format", "base64",
+ NULL);
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ NULL,
+ "data", "zL/3CUYZC1IqOrRrzXqwsA==",
+ "format", "raw",
+ "keyid", "master",
+ "iv", "0I7Gw/TKuA+Old2W2apQ3g==",
+ NULL);
+
+ g_assert(sec == NULL);
+ object_unparent(master);
+}
+
+
+static void test_secret_crypt_short_iv(void)
+{
+ Object *master = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "master",
+ &error_abort,
+ "data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
+ "format", "base64",
+ NULL);
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ NULL,
+ "data", "zL/3CUYZC1IqOrRrzXqwsA==",
+ "format", "raw",
+ "keyid", "master",
+ "iv", "0I7Gw/TKuA+Old2W2a",
+ NULL);
+
+ g_assert(sec == NULL);
+ object_unparent(master);
+}
+
+
+static void test_secret_crypt_missing_iv(void)
+{
+ Object *master = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "master",
+ &error_abort,
+ "data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
+ "format", "base64",
+ NULL);
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ NULL,
+ "data", "zL/3CUYZC1IqOrRrzXqwsA==",
+ "format", "raw",
+ "keyid", "master",
+ NULL);
+
+ g_assert(sec == NULL);
+ object_unparent(master);
+}
+
+
+static void test_secret_crypt_bad_iv(void)
+{
+ Object *master = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "master",
+ &error_abort,
+ "data", "9miloPQCzGy+TL6aonfzVcptibCmCIhKzrnlfwiWivk=",
+ "format", "base64",
+ NULL);
+ Object *sec = object_new_with_props(
+ TYPE_QCRYPTO_SECRET,
+ object_get_objects_root(),
+ "sec0",
+ NULL,
+ "data", "zL/3CUYZC1IqOrRrzXqwsA==",
+ "format", "raw",
+ "keyid", "master",
+ "iv", "0I7Gw/TK$$uA+Old2W2a",
+ NULL);
+
+ g_assert(sec == NULL);
+ object_unparent(master);
+}
+
+
+int main(int argc, char **argv)
+{
+ module_call_init(MODULE_INIT_QOM);
+ g_test_init(&argc, &argv, NULL);
+
+ g_assert(qcrypto_init(NULL) == 0);
+
+ g_test_add_func("/crypto/secret/direct",
+ test_secret_direct);
+ g_test_add_func("/crypto/secret/indirect/good",
+ test_secret_indirect_good);
+ g_test_add_func("/crypto/secret/indirect/badfile",
+ test_secret_indirect_badfile);
+ g_test_add_func("/crypto/secret/indirect/emptyfile",
+ test_secret_indirect_emptyfile);
+
+ g_test_add_func("/crypto/secret/noconv/base64/good",
+ test_secret_noconv_base64_good);
+ g_test_add_func("/crypto/secret/noconv/base64/bad",
+ test_secret_noconv_base64_bad);
+ g_test_add_func("/crypto/secret/noconv/utf8",
+ test_secret_noconv_utf8);
+ g_test_add_func("/crypto/secret/conv/base64/utf8valid",
+ test_secret_conv_base64_utf8valid);
+ g_test_add_func("/crypto/secret/conv/base64/utf8invalid",
+ test_secret_conv_base64_utf8invalid);
+ g_test_add_func("/crypto/secret/conv/utf8/base64",
+ test_secret_conv_utf8_base64);
+
+ g_test_add_func("/crypto/secret/crypt/raw",
+ test_secret_crypt_raw);
+ g_test_add_func("/crypto/secret/crypt/base64",
+ test_secret_crypt_base64);
+ g_test_add_func("/crypto/secret/crypt/shortkey",
+ test_secret_crypt_short_key);
+ g_test_add_func("/crypto/secret/crypt/shortiv",
+ test_secret_crypt_short_iv);
+ g_test_add_func("/crypto/secret/crypt/missingiv",
+ test_secret_crypt_missing_iv);
+ g_test_add_func("/crypto/secret/crypt/badiv",
+ test_secret_crypt_bad_iv);
+
+ return g_test_run();
+}
diff --git a/util/Makefile.objs b/util/Makefile.objs
index 89dd80e..8620a80 100644
--- a/util/Makefile.objs
+++ b/util/Makefile.objs
@@ -30,3 +30,4 @@ util-obj-y += qemu-coroutine-sleep.o
util-obj-y += coroutine-$(CONFIG_COROUTINE_BACKEND).o
util-obj-y += buffer.o
util-obj-y += timed-average.o
+util-obj-y += base64.o
diff --git a/util/base64.c b/util/base64.c
new file mode 100644
index 0000000..f82caa7
--- /dev/null
+++ b/util/base64.c
@@ -0,0 +1,60 @@
+/*
+ * QEMU base64 helpers
+ *
+ * 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 <config-host.h>
+
+#include "qemu/base64.h"
+
+static const char *base64_valid_chars =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n";
+
+uint8_t *qbase64_decode(const char *input,
+ size_t in_len,
+ size_t *out_len,
+ Error **errp)
+{
+ *out_len = 0;
+
+ if (in_len != -1) {
+ /* Lack of NUL terminator is an error */
+ if (input[in_len] != '\0') {
+ error_setg(errp, "Base64 data is not NUL terminated");
+ return NULL;
+ }
+ /* Check there's no NULs embedded since we expect
+ * this to be valid base64 data */
+ if (memchr(input, '\0', in_len) != NULL) {
+ error_setg(errp, "Base64 data contains embedded NUL characters");
+ return NULL;
+ }
+
+ /* Now we know its a valid nul terminated string
+ * strspn is safe to use... */
+ } else {
+ in_len = strlen(input);
+ }
+
+ if (strspn(input, base64_valid_chars) != in_len) {
+ error_setg(errp, "Base64 data contains invalid characters");
+ return NULL;
+ }
+
+ return g_base64_decode(input, out_len);
+}
generated by cgit v1.1 at 2024-11-01 07:35:19 +0000