+/*
+ * libcryptsetup - cryptsetup library
+ *
+ * Copyright (C) 2004, Jana Saout <jana@saout.de>
+ * Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
+ * Copyright (C) 2009-2012, Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2014, Milan Broz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
-#include <inttypes.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
+#include <stdarg.h>
+#include <sys/utsname.h>
#include <fcntl.h>
-#include <unistd.h>
#include <errno.h>
-#include <signal.h>
-#include <assert.h>
#include "libcryptsetup.h"
-#include "internal.h"
-#include "blockdev.h"
#include "luks.h"
+#include "loopaes.h"
+#include "verity.h"
+#include "tcrypt.h"
+#include "internal.h"
-struct device_infos {
- uint64_t size;
- int readonly;
+struct crypt_device {
+ char *type;
+
+ struct device *device;
+ struct device *metadata_device;
+
+ struct volume_key *volume_key;
+ uint64_t timeout;
+ uint64_t iteration_time;
+ int tries;
+ int password_verify;
+ int rng_type;
+
+ // FIXME: private binary headers and access it properly
+ // through sub-library (LUKS1, TCRYPT)
+
+ union {
+ struct { /* used in CRYPT_LUKS1 */
+ struct luks_phdr hdr;
+ uint64_t PBKDF2_per_sec;
+ } luks1;
+ struct { /* used in CRYPT_PLAIN */
+ struct crypt_params_plain hdr;
+ char *cipher;
+ char *cipher_mode;
+ unsigned int key_size;
+ } plain;
+ struct { /* used in CRYPT_LOOPAES */
+ struct crypt_params_loopaes hdr;
+ char *cipher;
+ char *cipher_mode;
+ unsigned int key_size;
+ } loopaes;
+ struct { /* used in CRYPT_VERITY */
+ struct crypt_params_verity hdr;
+ char *root_hash;
+ unsigned int root_hash_size;
+ char *uuid;
+ } verity;
+ struct { /* used in CRYPT_TCRYPT */
+ struct crypt_params_tcrypt params;
+ struct tcrypt_phdr hdr;
+ } tcrypt;
+ struct { /* used if initialized without header by name */
+ char *active_name;
+ /* buffers, must refresh from kernel on every query */
+ char cipher[MAX_CIPHER_LEN];
+ char cipher_mode[MAX_CIPHER_LEN];
+ unsigned int key_size;
+ } none;
+ } u;
+
+ /* callbacks definitions */
+ void (*log)(int level, const char *msg, void *usrptr);
+ void *log_usrptr;
+ int (*confirm)(const char *msg, void *usrptr);
+ void *confirm_usrptr;
+ int (*password)(const char *msg, char *buf, size_t length, void *usrptr);
+ void *password_usrptr;
+
+ /* last error message */
+ char error[MAX_ERROR_LENGTH];
};
-static int memory_unsafe = 0;
-static char *default_backend = NULL;
+/* Just to suppress redundant messages about crypto backend */
+static int _crypto_logged = 0;
+
+/* Global error */
+/* FIXME: not thread safe, remove this later */
+static char global_error[MAX_ERROR_LENGTH] = {0};
+
+/* Log helper */
+static void (*_default_log)(int level, const char *msg, void *usrptr) = NULL;
+static int _debug_level = 0;
+
+void crypt_set_debug_level(int level)
+{
+ _debug_level = level;
+}
+
+int crypt_get_debug_level(void)
+{
+ return _debug_level;
+}
+
+static void crypt_set_error(struct crypt_device *cd, const char *error)
+{
+ size_t size = strlen(error);
+
+ /* Set global error, ugly hack... */
+ strncpy(global_error, error, MAX_ERROR_LENGTH - 2);
+ if (size < MAX_ERROR_LENGTH && global_error[size - 1] == '\n')
+ global_error[size - 1] = '\0';
+
+ /* Set error string per context */
+ if (cd) {
+ strncpy(cd->error, error, MAX_ERROR_LENGTH - 2);
+ if (size < MAX_ERROR_LENGTH && cd->error[size - 1] == '\n')
+ cd->error[size - 1] = '\0';
+ }
+}
+
+void crypt_log(struct crypt_device *cd, int level, const char *msg)
+{
+ if (cd && cd->log)
+ cd->log(level, msg, cd->log_usrptr);
+ else if (_default_log)
+ _default_log(level, msg, NULL);
-#define at_least_one(a) ({ __typeof__(a) __at_least_one=(a); (__at_least_one)?__at_least_one:1; })
+ if (level == CRYPT_LOG_ERROR)
+ crypt_set_error(cd, msg);
+}
-static void logger(struct crypt_options *options, int class, char *format, ...) {
+__attribute__((format(printf, 5, 6)))
+void logger(struct crypt_device *cd, int level, const char *file,
+ int line, const char *format, ...)
+{
va_list argp;
char *target = NULL;
va_start(argp, format);
- if (vasprintf(&target, format, argp) > 0)
- options->icb->log(class, target);
+ if (vasprintf(&target, format, argp) > 0 ) {
+ if (level >= 0) {
+ crypt_log(cd, level, target);
+#ifdef CRYPT_DEBUG
+ } else if (_debug_level)
+ printf("# %s:%d %s\n", file ?: "?", line, target);
+#else
+ } else if (_debug_level)
+ printf("# %s\n", target);
+#endif
+ }
va_end(argp);
free(target);
}
-static void hexprintICB(struct crypt_options *options, int class, char *d, int n)
+static const char *mdata_device_path(struct crypt_device *cd)
{
- int i;
- for(i = 0; i < n; i++)
- logger(options, class, "%02hhx ", (char)d[i]);
+ return device_path(cd->metadata_device ?: cd->device);
+}
+
+/* internal only */
+struct device *crypt_metadata_device(struct crypt_device *cd)
+{
+ return cd->metadata_device ?: cd->device;
+}
+
+struct device *crypt_data_device(struct crypt_device *cd)
+{
+ return cd->device;
}
-static int setup_enter(struct setup_backend *backend, void (*log)(int, char *))
+int init_crypto(struct crypt_device *ctx)
{
+ struct utsname uts;
int r;
- /*
- * from here we could have sensible data in memory
- * so protect it from being swapped out
- */
- r = mlockall(MCL_CURRENT | MCL_FUTURE);
+ r = crypt_random_init(ctx);
if (r < 0) {
- perror("mlockall failed");
- log(CRYPT_LOG_ERROR, "WARNING!!! Possibly insecure memory. Are you root?\n");
- memory_unsafe = 1;
+ log_err(ctx, _("Cannot initialize crypto RNG backend.\n"));
+ return r;
}
- set_error(NULL);
+ r = crypt_backend_init(ctx);
+ if (r < 0)
+ log_err(ctx, _("Cannot initialize crypto backend.\n"));
+
+ if (!r && !_crypto_logged) {
+ log_dbg("Crypto backend (%s) initialized.", crypt_backend_version());
+ if (!uname(&uts))
+ log_dbg("Detected kernel %s %s %s.",
+ uts.sysname, uts.release, uts.machine);
+ _crypto_logged = 1;
+ }
- if (backend) {
- r = backend->init();
- if (r < 0)
- return r;
- if (r > 0)
- memory_unsafe = 1;
+ return r;
+}
+
+static int process_key(struct crypt_device *cd, const char *hash_name,
+ size_t key_size, const char *pass, size_t passLen,
+ struct volume_key **vk)
+{
+ int r;
+
+ if (!key_size)
+ return -EINVAL;
+
+ *vk = crypt_alloc_volume_key(key_size, NULL);
+ if (!*vk)
+ return -ENOMEM;
+
+ if (hash_name) {
+ r = crypt_plain_hash(cd, hash_name, (*vk)->key, key_size, pass, passLen);
+ if (r < 0) {
+ if (r == -ENOENT)
+ log_err(cd, _("Hash algorithm %s not supported.\n"),
+ hash_name);
+ else
+ log_err(cd, _("Key processing error (using hash %s).\n"),
+ hash_name);
+ crypt_free_volume_key(*vk);
+ *vk = NULL;
+ return -EINVAL;
+ }
+ } else if (passLen > key_size) {
+ memcpy((*vk)->key, pass, key_size);
+ } else {
+ memcpy((*vk)->key, pass, passLen);
}
return 0;
}
-static int setup_leave(struct setup_backend *backend)
+static int isPLAIN(const char *type)
+{
+ return (type && !strcmp(CRYPT_PLAIN, type));
+}
+
+static int isLUKS(const char *type)
+{
+ return (type && !strcmp(CRYPT_LUKS1, type));
+}
+
+static int isLOOPAES(const char *type)
+{
+ return (type && !strcmp(CRYPT_LOOPAES, type));
+}
+
+static int isVERITY(const char *type)
+{
+ return (type && !strcmp(CRYPT_VERITY, type));
+}
+
+static int isTCRYPT(const char *type)
+{
+ return (type && !strcmp(CRYPT_TCRYPT, type));
+}
+
+static int onlyLUKS(struct crypt_device *cd)
+{
+ int r = 0;
+
+ if (cd && !cd->type) {
+ log_err(cd, _("Cannot determine device type. Incompatible activation of device?\n"));
+ r = -EINVAL;
+ }
+ if (!cd || !isLUKS(cd->type)) {
+ log_err(cd, _("This operation is supported only for LUKS device.\n"));
+ r = -EINVAL;
+ }
+
+ return r;
+}
+
+static void crypt_set_null_type(struct crypt_device *cd)
+{
+ if (!cd->type)
+ return;
+
+ free(cd->type);
+ cd->type = NULL;
+ cd->u.none.active_name = NULL;
+}
+
+static void crypt_reset_null_type(struct crypt_device *cd)
+{
+ if (cd->type)
+ return;
+
+ free(cd->u.none.active_name);
+ cd->u.none.active_name = NULL;
+}
+
+/* keyslot helpers */
+static int keyslot_verify_or_find_empty(struct crypt_device *cd, int *keyslot)
{
- if (backend)
- backend->exit();
+ if (*keyslot == CRYPT_ANY_SLOT) {
+ *keyslot = LUKS_keyslot_find_empty(&cd->u.luks1.hdr);
+ if (*keyslot < 0) {
+ log_err(cd, _("All key slots full.\n"));
+ return -EINVAL;
+ }
+ }
- /* dangerous, we can't wipe all the memory */
- if (!memory_unsafe)
- munlockall();
+ switch (LUKS_keyslot_info(&cd->u.luks1.hdr, *keyslot)) {
+ case CRYPT_SLOT_INVALID:
+ log_err(cd, _("Key slot %d is invalid, please select between 0 and %d.\n"),
+ *keyslot, LUKS_NUMKEYS - 1);
+ return -EINVAL;
+ case CRYPT_SLOT_INACTIVE:
+ break;
+ default:
+ log_err(cd, _("Key slot %d is full, please select another one.\n"),
+ *keyslot);
+ return -EINVAL;
+ }
return 0;
}
/*
- * Password processing behaviour matrix of process_key
- *
- * from binary file: check if there is sufficently large key material
- * interactive & from fd: hash if requested, otherwise crop or pad with '0'
+ * compares UUIDs returned by device-mapper (striped by cryptsetup) and uuid in header
*/
+static int crypt_uuid_cmp(const char *dm_uuid, const char *hdr_uuid)
+{
+ int i, j;
+ char *str;
-static char *process_key(struct crypt_options *options, char *pass, int passLen) {
- char *key = safe_alloc(options->key_size);
- memset(key, 0, options->key_size);
-
- /* key is coming from binary file */
- if (options->key_file && strcmp(options->key_file, "-")) {
- if(passLen < options->key_size) {
- set_error("Could not read %d bytes from key file",
- options->key_size);
- safe_free(key);
- return NULL;
- }
- memcpy(key,pass,options->key_size);
- return key;
- }
-
- /* key is coming from tty, fd or binary stdin */
- if (options->hash) {
- if (hash(NULL, options->hash,
- key, options->key_size,
- pass, passLen) < 0)
- {
- safe_free(key);
- return NULL;
- }
- } else if (passLen > options->key_size) {
- memcpy(key, pass, options->key_size);
- } else {
- memcpy(key, pass, passLen);
+ if (!dm_uuid || !hdr_uuid)
+ return -EINVAL;
+
+ str = strchr(dm_uuid, '-');
+ if (!str)
+ return -EINVAL;
+
+ for (i = 0, j = 1; hdr_uuid[i]; i++) {
+ if (hdr_uuid[i] == '-')
+ continue;
+
+ if (!str[j] || str[j] == '-')
+ return -EINVAL;
+
+ if (str[j] != hdr_uuid[i])
+ return -EINVAL;
+ j++;
}
- return key;
+ return 0;
}
-static int get_device_infos(const char *device, struct device_infos *infos)
+/*
+ * compares type of active device to provided string (only if there is no explicit type)
+ */
+static int crypt_uuid_type_cmp(struct crypt_device *cd, const char *type)
{
- char buf[128];
- uint64_t size;
- unsigned long size_small;
- int readonly = 0;
- int ret = -1;
- int fd;
+ struct crypt_dm_active_device dmd = {};
+ size_t len;
+ int r;
+
+ /* Must user header-on-disk if we know type here */
+ if (cd->type || !cd->u.none.active_name)
+ return -EINVAL;
+
+ log_dbg("Checking if active device %s without header has UUID type %s.",
+ cd->u.none.active_name, type);
+
+ r = dm_query_device(cd, cd->u.none.active_name, DM_ACTIVE_UUID, &dmd);
+ if (r < 0)
+ return r;
+
+ r = -ENODEV;
+ len = strlen(type);
+ if (dmd.uuid && strlen(dmd.uuid) > len &&
+ !strncmp(dmd.uuid, type, len) && dmd.uuid[len] == '-')
+ r = 0;
+
+ free(CONST_CAST(void*)dmd.uuid);
+ return r;
+}
- /* Try to open read-write to check whether it is a read-only device */
- fd = open(device, O_RDWR);
- if (fd < 0) {
- if (errno == EROFS) {
- readonly = 1;
- fd = open(device, O_RDONLY);
+int PLAIN_activate(struct crypt_device *cd,
+ const char *name,
+ struct volume_key *vk,
+ uint64_t size,
+ uint32_t flags)
+{
+ int r;
+ char *dm_cipher = NULL;
+ enum devcheck device_check;
+ struct crypt_dm_active_device dmd = {
+ .target = DM_CRYPT,
+ .size = size,
+ .flags = flags,
+ .data_device = crypt_data_device(cd),
+ .u.crypt = {
+ .cipher = NULL,
+ .vk = vk,
+ .offset = crypt_get_data_offset(cd),
+ .iv_offset = crypt_get_iv_offset(cd),
}
- } else {
- close(fd);
- fd = open(device, O_RDONLY);
- }
- if (fd < 0) {
- set_error("Error opening device: %s",
- strerror_r(errno, buf, 128));
- return -1;
- }
-
-#ifdef BLKROGET
- /* If the device can be opened read-write, i.e. readonly is still 0, then
- * check whether BKROGET says that it is read-only. E.g. read-only loop
- * devices may be openend read-write but are read-only according to BLKROGET
- */
- if (readonly == 0) {
- if (ioctl(fd, BLKROGET, &readonly) < 0) {
- set_error("BLKROGET failed on device: %s",
- strerror_r(errno, buf, 128));
- return -1;
+ };
+
+ if (dmd.flags & CRYPT_ACTIVATE_SHARED)
+ device_check = DEV_SHARED;
+ else
+ device_check = DEV_EXCL;
+
+ r = device_block_adjust(cd, dmd.data_device, device_check,
+ dmd.u.crypt.offset, &dmd.size, &dmd.flags);
+ if (r)
+ return r;
+
+ if (crypt_get_cipher_mode(cd))
+ r = asprintf(&dm_cipher, "%s-%s", crypt_get_cipher(cd), crypt_get_cipher_mode(cd));
+ else
+ r = asprintf(&dm_cipher, "%s", crypt_get_cipher(cd));
+ if (r < 0)
+ return -ENOMEM;
+
+ dmd.u.crypt.cipher = dm_cipher;
+ log_dbg("Trying to activate PLAIN device %s using cipher %s.",
+ name, dmd.u.crypt.cipher);
+
+ r = dm_create_device(cd, name, CRYPT_PLAIN, &dmd, 0);
+
+ free(dm_cipher);
+ return r;
+}
+
+int crypt_confirm(struct crypt_device *cd, const char *msg)
+{
+ if (!cd || !cd->confirm)
+ return 1;
+ else
+ return cd->confirm(msg, cd->confirm_usrptr);
+}
+
+static int key_from_terminal(struct crypt_device *cd, char *msg, char **key,
+ size_t *key_len, int force_verify)
+{
+ char *prompt = NULL, *device_name;
+ int r;
+
+ *key = NULL;
+ if(!msg) {
+ if (crypt_loop_device(crypt_get_device_name(cd)))
+ device_name = crypt_loop_backing_file(crypt_get_device_name(cd));
+ else
+ device_name = strdup(crypt_get_device_name(cd));
+ if (!device_name)
+ return -ENOMEM;
+ r = asprintf(&prompt, _("Enter passphrase for %s: "), device_name);
+ free(device_name);
+ if (r < 0)
+ return -ENOMEM;
+ msg = prompt;
+ }
+
+ if (cd->password) {
+ *key = crypt_safe_alloc(DEFAULT_PASSPHRASE_SIZE_MAX);
+ if (!*key) {
+ r = -ENOMEM;
+ goto out;
}
+ r = cd->password(msg, *key, DEFAULT_PASSPHRASE_SIZE_MAX,
+ cd->password_usrptr);
+ if (r < 0) {
+ crypt_safe_free(*key);
+ *key = NULL;
+ } else
+ *key_len = r;
+ } else
+ r = crypt_get_key(msg, key, key_len, 0, 0, NULL, cd->timeout,
+ (force_verify || cd->password_verify), cd);
+out:
+ free(prompt);
+ return (r < 0) ? r: 0;
+}
+
+static int volume_key_by_terminal_passphrase(struct crypt_device *cd, int keyslot,
+ struct volume_key **vk)
+{
+ char *passphrase_read = NULL;
+ size_t passphrase_size_read;
+ int r = -EINVAL, eperm = 0, tries = cd->tries;
+
+ *vk = NULL;
+ do {
+ crypt_free_volume_key(*vk);
+ *vk = NULL;
+
+ r = key_from_terminal(cd, NULL, &passphrase_read,
+ &passphrase_size_read, 0);
+ /* Continue if it is just passphrase verify mismatch */
+ if (r == -EPERM)
+ continue;
+ if(r < 0)
+ goto out;
+
+ r = LUKS_open_key_with_hdr(keyslot, passphrase_read,
+ passphrase_size_read, &cd->u.luks1.hdr, vk, cd);
+ if (r == -EPERM)
+ eperm = 1;
+ crypt_safe_free(passphrase_read);
+ passphrase_read = NULL;
+ } while (r == -EPERM && (--tries > 0));
+out:
+ if (r < 0) {
+ crypt_free_volume_key(*vk);
+ *vk = NULL;
+
+ /* Report wrong passphrase if at least one try failed */
+ if (eperm && r == -EPIPE)
+ r = -EPERM;
}
-#else
-#error BLKROGET not available
-#endif
-#ifdef BLKGETSIZE64
- if (ioctl(fd, BLKGETSIZE64, &size) >= 0) {
- size >>= SECTOR_SHIFT;
- ret = 0;
- goto out;
+ crypt_safe_free(passphrase_read);
+ return r;
+}
+
+static int key_from_file(struct crypt_device *cd, char *msg,
+ char **key, size_t *key_len,
+ const char *key_file, size_t key_offset,
+ size_t key_size)
+{
+ return crypt_get_key(msg, key, key_len, key_offset, key_size, key_file,
+ cd->timeout, 0, cd);
+}
+
+void crypt_set_log_callback(struct crypt_device *cd,
+ void (*log)(int level, const char *msg, void *usrptr),
+ void *usrptr)
+{
+ if (!cd)
+ _default_log = log;
+ else {
+ cd->log = log;
+ cd->log_usrptr = usrptr;
}
-#endif
+}
-#ifdef BLKGETSIZE
- if (ioctl(fd, BLKGETSIZE, &size_small) >= 0) {
- size = (uint64_t)size_small;
- ret = 0;
- goto out;
+void crypt_set_confirm_callback(struct crypt_device *cd,
+ int (*confirm)(const char *msg, void *usrptr),
+ void *usrptr)
+{
+ cd->confirm = confirm;
+ cd->confirm_usrptr = usrptr;
+}
+
+void crypt_set_password_callback(struct crypt_device *cd,
+ int (*password)(const char *msg, char *buf, size_t length, void *usrptr),
+ void *usrptr)
+{
+ cd->password = password;
+ cd->password_usrptr = usrptr;
+}
+
+static void _get_error(char *error, char *buf, size_t size)
+{
+ if (!buf || size < 1)
+ error[0] = '\0';
+ else if (*error) {
+ strncpy(buf, error, size - 1);
+ buf[size - 1] = '\0';
+ error[0] = '\0';
+ } else
+ buf[0] = '\0';
+}
+
+void crypt_last_error(struct crypt_device *cd, char *buf, size_t size)
+{
+ if (cd)
+ return _get_error(cd->error, buf, size);
+}
+
+/* Deprecated global error interface */
+void crypt_get_error(char *buf, size_t size)
+{
+ return _get_error(global_error, buf, size);
+}
+
+const char *crypt_get_dir(void)
+{
+ return dm_get_dir();
+}
+
+int crypt_init(struct crypt_device **cd, const char *device)
+{
+ struct crypt_device *h = NULL;
+ int r;
+
+ if (!cd)
+ return -EINVAL;
+
+ log_dbg("Allocating crypt device %s context.", device);
+
+ if (!(h = malloc(sizeof(struct crypt_device))))
+ return -ENOMEM;
+
+ memset(h, 0, sizeof(*h));
+
+ r = device_alloc(&h->device, device);
+ if (r < 0)
+ goto bad;
+
+ dm_backend_init();
+
+ h->iteration_time = 1000;
+ h->password_verify = 0;
+ h->tries = 3;
+ h->rng_type = crypt_random_default_key_rng();
+ *cd = h;
+ return 0;
+bad:
+ device_free(h->device);
+ free(h);
+ return r;
+}
+
+static int crypt_check_data_device_size(struct crypt_device *cd)
+{
+ int r;
+ uint64_t size, size_min;
+
+ /* Check data device size, require at least one sector */
+ size_min = crypt_get_data_offset(cd) << SECTOR_SHIFT ?: SECTOR_SIZE;
+
+ r = device_size(cd->device, &size);
+ if (r < 0)
+ return r;
+
+ if (size < size_min) {
+ log_err(cd, _("Header detected but device %s is too small.\n"),
+ device_path(cd->device));
+ return -EINVAL;
}
-#else
-# error Need at least the BLKGETSIZE ioctl!
-#endif
- set_error("BLKGETSIZE ioctl failed on device: %s",
- strerror_r(errno, buf, 128));
+ return r;
+}
+
+int crypt_set_data_device(struct crypt_device *cd, const char *device)
+{
+ struct device *dev = NULL;
+ int r;
+
+ log_dbg("Setting ciphertext data device to %s.", device ?: "(none)");
-out:
- if (ret == 0) {
- infos->size = size;
- infos->readonly = readonly;
+ if (!isLUKS(cd->type) && !isVERITY(cd->type)) {
+ log_err(cd, _("This operation is not supported for this device type.\n"));
+ return -EINVAL;
}
- close(fd);
- return ret;
+
+ /* metadata device must be set */
+ if (!cd->device || !device)
+ return -EINVAL;
+
+ r = device_alloc(&dev, device);
+ if (r < 0)
+ return r;
+
+ if (!cd->metadata_device) {
+ cd->metadata_device = cd->device;
+ } else
+ device_free(cd->device);
+
+ cd->device = dev;
+
+ return crypt_check_data_device_size(cd);
+}
+
+static int _crypt_load_luks1(struct crypt_device *cd, int require_header, int repair)
+{
+ struct luks_phdr hdr;
+ int r;
+
+ r = init_crypto(cd);
+ if (r < 0)
+ return r;
+
+ r = LUKS_read_phdr(&hdr, require_header, repair, cd);
+ if (r < 0)
+ return r;
+
+ if (!cd->type && !(cd->type = strdup(CRYPT_LUKS1)))
+ return -ENOMEM;
+
+ memcpy(&cd->u.luks1.hdr, &hdr, sizeof(hdr));
+
+ return r;
}
-static int wipe_device_header(const char *device, int sectors)
-{
- char *buffer;
- int size = sectors * SECTOR_SIZE;
- int r = -1;
- int devfd;
+static int _crypt_load_tcrypt(struct crypt_device *cd, struct crypt_params_tcrypt *params)
+{
+ int r;
+
+ if (!params)
+ return -EINVAL;
+
+ r = init_crypto(cd);
+ if (r < 0)
+ return r;
+
+ memcpy(&cd->u.tcrypt.params, params, sizeof(*params));
+
+ r = TCRYPT_read_phdr(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
+
+ cd->u.tcrypt.params.passphrase = NULL;
+ cd->u.tcrypt.params.passphrase_size = 0;
+ cd->u.tcrypt.params.keyfiles = NULL;
+ cd->u.tcrypt.params.keyfiles_count = 0;
+
+ if (r < 0)
+ return r;
+
+ if (!cd->type && !(cd->type = strdup(CRYPT_TCRYPT)))
+ return -ENOMEM;
+
+ return r;
+}
+
+static int _crypt_load_verity(struct crypt_device *cd, struct crypt_params_verity *params)
+{
+ int r;
+ size_t sb_offset = 0;
+
+ r = init_crypto(cd);
+ if (r < 0)
+ return r;
+
+ if (params && params->flags & CRYPT_VERITY_NO_HEADER)
+ return -EINVAL;
+
+ if (params)
+ sb_offset = params->hash_area_offset;
+
+ r = VERITY_read_sb(cd, sb_offset, &cd->u.verity.uuid, &cd->u.verity.hdr);
+ if (r < 0)
+ return r;
+
+ if (params)
+ cd->u.verity.hdr.flags = params->flags;
+
+ /* Hash availability checked in sb load */
+ cd->u.verity.root_hash_size = crypt_hash_size(cd->u.verity.hdr.hash_name);
+ if (cd->u.verity.root_hash_size > 4096)
+ return -EINVAL;
+
+ if (!cd->type && !(cd->type = strdup(CRYPT_VERITY)))
+ return -ENOMEM;
+
+ if (params && params->data_device &&
+ (r = crypt_set_data_device(cd, params->data_device)) < 0)
+ return r;
+
+ return r;
+}
+
+static int _init_by_name_crypt(struct crypt_device *cd, const char *name)
+{
+ struct crypt_dm_active_device dmd = {};
+ char cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
+ int key_nums, r;
+
+ r = dm_query_device(cd, name,
+ DM_ACTIVE_DEVICE |
+ DM_ACTIVE_UUID |
+ DM_ACTIVE_CRYPT_CIPHER |
+ DM_ACTIVE_CRYPT_KEYSIZE, &dmd);
+ if (r < 0)
+ goto out;
+ if (r > 0)
+ r = 0;
+
+ if (isPLAIN(cd->type)) {
+ cd->u.plain.hdr.hash = NULL; /* no way to get this */
+ cd->u.plain.hdr.offset = dmd.u.crypt.offset;
+ cd->u.plain.hdr.skip = dmd.u.crypt.iv_offset;
+ cd->u.plain.key_size = dmd.u.crypt.vk->keylength;
+
+ r = crypt_parse_name_and_mode(dmd.u.crypt.cipher, cipher, NULL, cipher_mode);
+ if (!r) {
+ cd->u.plain.cipher = strdup(cipher);
+ cd->u.plain.cipher_mode = strdup(cipher_mode);
+ }
+ } else if (isLOOPAES(cd->type)) {
+ cd->u.loopaes.hdr.offset = dmd.u.crypt.offset;
+
+ r = crypt_parse_name_and_mode(dmd.u.crypt.cipher, cipher,
+ &key_nums, cipher_mode);
+ if (!r) {
+ cd->u.loopaes.cipher = strdup(cipher);
+ cd->u.loopaes.cipher_mode = strdup(cipher_mode);
+ /* version 3 uses last key for IV */
+ if (dmd.u.crypt.vk->keylength % key_nums)
+ key_nums++;
+ cd->u.loopaes.key_size = dmd.u.crypt.vk->keylength / key_nums;
+ }
+ } else if (isLUKS(cd->type)) {
+ if (crypt_metadata_device(cd)) {
+ r = _crypt_load_luks1(cd, 0, 0);
+ if (r < 0) {
+ log_dbg("LUKS device header does not match active device.");
+ crypt_set_null_type(cd);
+ r = 0;
+ goto out;
+ }
+ /* check whether UUIDs match each other */
+ r = crypt_uuid_cmp(dmd.uuid, cd->u.luks1.hdr.uuid);
+ if (r < 0) {
+ log_dbg("LUKS device header uuid: %s mismatches DM returned uuid %s",
+ cd->u.luks1.hdr.uuid, dmd.uuid);
+ crypt_set_null_type(cd);
+ r = 0;
+ }
+ } else {
+ log_dbg("LUKS device header not available.");
+ crypt_set_null_type(cd);
+ r = 0;
+ }
+ } else if (isTCRYPT(cd->type)) {
+ r = TCRYPT_init_by_name(cd, name, &dmd, &cd->device,
+ &cd->u.tcrypt.params, &cd->u.tcrypt.hdr);
+ }
+out:
+ crypt_free_volume_key(dmd.u.crypt.vk);
+ device_free(dmd.data_device);
+ free(CONST_CAST(void*)dmd.u.crypt.cipher);
+ free(CONST_CAST(void*)dmd.uuid);
+ return r;
+}
+
+static int _init_by_name_verity(struct crypt_device *cd, const char *name)
+{
+ struct crypt_params_verity params = {};
+ struct crypt_dm_active_device dmd = {
+ .target = DM_VERITY,
+ .u.verity.vp = ¶ms,
+ };
+ int r;
+
+ r = dm_query_device(cd, name,
+ DM_ACTIVE_DEVICE |
+ DM_ACTIVE_VERITY_HASH_DEVICE |
+ DM_ACTIVE_VERITY_PARAMS, &dmd);
+ if (r < 0)
+ goto out;
+ if (r > 0)
+ r = 0;
+
+ if (isVERITY(cd->type)) {
+ cd->u.verity.uuid = NULL; // FIXME
+ cd->u.verity.hdr.flags = CRYPT_VERITY_NO_HEADER; //FIXME
+ cd->u.verity.hdr.data_size = params.data_size;
+ cd->u.verity.root_hash_size = dmd.u.verity.root_hash_size;
+ cd->u.verity.root_hash = NULL;
+ cd->u.verity.hdr.hash_name = params.hash_name;
+ cd->u.verity.hdr.data_device = NULL;
+ cd->u.verity.hdr.hash_device = NULL;
+ cd->u.verity.hdr.data_block_size = params.data_block_size;
+ cd->u.verity.hdr.hash_block_size = params.hash_block_size;
+ cd->u.verity.hdr.hash_area_offset = dmd.u.verity.hash_offset;
+ cd->u.verity.hdr.hash_type = params.hash_type;
+ cd->u.verity.hdr.flags = params.flags;
+ cd->u.verity.hdr.salt_size = params.salt_size;
+ cd->u.verity.hdr.salt = params.salt;
+ cd->metadata_device = dmd.u.verity.hash_device;
+ }
+out:
+ device_free(dmd.data_device);
+ return r;
+}
+
+int crypt_init_by_name_and_header(struct crypt_device **cd,
+ const char *name,
+ const char *header_device)
+{
+ crypt_status_info ci;
+ struct crypt_dm_active_device dmd;
+ int r;
+
+ log_dbg("Allocating crypt device context by device %s.", name);
+
+ ci = crypt_status(NULL, name);
+ if (ci == CRYPT_INVALID)
+ return -ENODEV;
+
+ if (ci < CRYPT_ACTIVE) {
+ log_err(NULL, _("Device %s is not active.\n"), name);
+ return -ENODEV;
+ }
+
+ r = dm_query_device(NULL, name, DM_ACTIVE_DEVICE | DM_ACTIVE_UUID, &dmd);
+ if (r < 0)
+ goto out;
+
+ *cd = NULL;
+
+ if (header_device) {
+ r = crypt_init(cd, header_device);
+ } else {
+ r = crypt_init(cd, device_path(dmd.data_device));
+
+ /* Underlying device disappeared but mapping still active */
+ if (!dmd.data_device || r == -ENOTBLK)
+ log_verbose(NULL, _("Underlying device for crypt device %s disappeared.\n"),
+ name);
+
+ /* Underlying device is not readable but crypt mapping exists */
+ if (r == -ENOTBLK) {
+ device_free(dmd.data_device);
+ dmd.data_device = NULL;
+ r = crypt_init(cd, NULL);
+ }
+ }
+
+ if (r < 0)
+ goto out;
+
+ if (dmd.uuid) {
+ if (!strncmp(CRYPT_PLAIN, dmd.uuid, sizeof(CRYPT_PLAIN)-1))
+ (*cd)->type = strdup(CRYPT_PLAIN);
+ else if (!strncmp(CRYPT_LOOPAES, dmd.uuid, sizeof(CRYPT_LOOPAES)-1))
+ (*cd)->type = strdup(CRYPT_LOOPAES);
+ else if (!strncmp(CRYPT_LUKS1, dmd.uuid, sizeof(CRYPT_LUKS1)-1))
+ (*cd)->type = strdup(CRYPT_LUKS1);
+ else if (!strncmp(CRYPT_VERITY, dmd.uuid, sizeof(CRYPT_VERITY)-1))
+ (*cd)->type = strdup(CRYPT_VERITY);
+ else if (!strncmp(CRYPT_TCRYPT, dmd.uuid, sizeof(CRYPT_TCRYPT)-1))
+ (*cd)->type = strdup(CRYPT_TCRYPT);
+ else
+ log_dbg("Unknown UUID set, some parameters are not set.");
+ } else
+ log_dbg("Active device has no UUID set, some parameters are not set.");
+
+ if (header_device) {
+ r = crypt_set_data_device(*cd, device_path(dmd.data_device));
+ if (r < 0)
+ goto out;
+ }
+
+ /* Try to initialise basic parameters from active device */
+
+ if (dmd.target == DM_CRYPT)
+ r = _init_by_name_crypt(*cd, name);
+ else if (dmd.target == DM_VERITY)
+ r = _init_by_name_verity(*cd, name);
+out:
+ if (r < 0) {
+ crypt_free(*cd);
+ *cd = NULL;
+ } else if (!(*cd)->type && name) {
+ /* For anonymous device (no header found) remember initialized name */
+ (*cd)->u.none.active_name = strdup(name);
+ }
+
+ device_free(dmd.data_device);
+ free(CONST_CAST(void*)dmd.uuid);
+ return r;
+}
+
+int crypt_init_by_name(struct crypt_device **cd, const char *name)
+{
+ return crypt_init_by_name_and_header(cd, name, NULL);
+}
+
+static int _crypt_format_plain(struct crypt_device *cd,
+ const char *cipher,
+ const char *cipher_mode,
+ const char *uuid,
+ size_t volume_key_size,
+ struct crypt_params_plain *params)
+{
+ if (!cipher || !cipher_mode) {
+ log_err(cd, _("Invalid plain crypt parameters.\n"));
+ return -EINVAL;
+ }
+
+ if (volume_key_size > 1024) {
+ log_err(cd, _("Invalid key size.\n"));
+ return -EINVAL;
+ }
+
+ if (uuid) {
+ log_err(cd, _("UUID is not supported for this crypt type.\n"));
+ return -EINVAL;
+ }
+
+ if (!(cd->type = strdup(CRYPT_PLAIN)))
+ return -ENOMEM;
+
+ cd->u.plain.key_size = volume_key_size;
+ cd->volume_key = crypt_alloc_volume_key(volume_key_size, NULL);
+ if (!cd->volume_key)
+ return -ENOMEM;
+
+ cd->u.plain.cipher = strdup(cipher);
+ cd->u.plain.cipher_mode = strdup(cipher_mode);
+
+
+ if (params && params->hash)
+ cd->u.plain.hdr.hash = strdup(params->hash);
+
+ cd->u.plain.hdr.offset = params ? params->offset : 0;
+ cd->u.plain.hdr.skip = params ? params->skip : 0;
+ cd->u.plain.hdr.size = params ? params->size : 0;
+
+ if (!cd->u.plain.cipher || !cd->u.plain.cipher_mode)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int _crypt_format_luks1(struct crypt_device *cd,
+ const char *cipher,
+ const char *cipher_mode,
+ const char *uuid,
+ const char *volume_key,
+ size_t volume_key_size,
+ struct crypt_params_luks1 *params)
+{
+ int r;
+ unsigned long required_alignment = DEFAULT_DISK_ALIGNMENT;
+ unsigned long alignment_offset = 0;
+
+ if (!crypt_metadata_device(cd)) {
+ log_err(cd, _("Can't format LUKS without device.\n"));
+ return -EINVAL;
+ }
+
+ if (!(cd->type = strdup(CRYPT_LUKS1)))
+ return -ENOMEM;
+
+ if (volume_key)
+ cd->volume_key = crypt_alloc_volume_key(volume_key_size,
+ volume_key);
+ else
+ cd->volume_key = crypt_generate_volume_key(cd, volume_key_size);
+
+ if(!cd->volume_key)
+ return -ENOMEM;
+
+ if (params && params->data_device) {
+ cd->metadata_device = cd->device;
+ cd->device = NULL;
+ if (device_alloc(&cd->device, params->data_device) < 0)
+ return -ENOMEM;
+ required_alignment = params->data_alignment * SECTOR_SIZE;
+ } else if (params && params->data_alignment) {
+ required_alignment = params->data_alignment * SECTOR_SIZE;
+ } else
+ device_topology_alignment(cd->device,
+ &required_alignment,
+ &alignment_offset, DEFAULT_DISK_ALIGNMENT);
+
+ r = LUKS_generate_phdr(&cd->u.luks1.hdr, cd->volume_key, cipher, cipher_mode,
+ (params && params->hash) ? params->hash : "sha1",
+ uuid, LUKS_STRIPES,
+ required_alignment / SECTOR_SIZE,
+ alignment_offset / SECTOR_SIZE,
+ cd->iteration_time, &cd->u.luks1.PBKDF2_per_sec,
+ cd->metadata_device ? 1 : 0, cd);
+ if(r < 0)
+ return r;
+
+ /* Wipe first 8 sectors - fs magic numbers etc. */
+ r = crypt_wipe(crypt_metadata_device(cd), 0, 8 * SECTOR_SIZE, CRYPT_WIPE_ZERO, 1);
+ if(r < 0) {
+ if (r == -EBUSY)
+ log_err(cd, _("Cannot format device %s which is still in use.\n"),
+ mdata_device_path(cd));
+ else if (r == -EACCES) {
+ log_err(cd, _("Cannot format device %s, permission denied.\n"),
+ mdata_device_path(cd));
+ r = -EINVAL;
+ } else
+ log_err(cd, _("Cannot wipe header on device %s.\n"),
+ mdata_device_path(cd));
+
+ return r;
+ }
+
+ r = LUKS_write_phdr(&cd->u.luks1.hdr, cd);
+
+ return r;
+}
+
+static int _crypt_format_loopaes(struct crypt_device *cd,
+ const char *cipher,
+ const char *uuid,
+ size_t volume_key_size,
+ struct crypt_params_loopaes *params)
+{
+ if (!crypt_metadata_device(cd)) {
+ log_err(cd, _("Can't format LOOPAES without device.\n"));
+ return -EINVAL;
+ }
+
+ if (volume_key_size > 1024) {
+ log_err(cd, _("Invalid key size.\n"));
+ return -EINVAL;
+ }
+
+ if (uuid) {
+ log_err(cd, _("UUID is not supported for this crypt type.\n"));
+ return -EINVAL;
+ }
+
+ if (!(cd->type = strdup(CRYPT_LOOPAES)))
+ return -ENOMEM;
+
+ cd->u.loopaes.key_size = volume_key_size;
+
+ cd->u.loopaes.cipher = strdup(cipher ?: DEFAULT_LOOPAES_CIPHER);
+
+ if (params && params->hash)
+ cd->u.loopaes.hdr.hash = strdup(params->hash);
+
+ cd->u.loopaes.hdr.offset = params ? params->offset : 0;
+ cd->u.loopaes.hdr.skip = params ? params->skip : 0;
+
+ return 0;
+}
+
+static int _crypt_format_verity(struct crypt_device *cd,
+ const char *uuid,
+ struct crypt_params_verity *params)
+{
+ int r = 0, hash_size;
+ uint64_t data_device_size;
+
+ if (!crypt_metadata_device(cd)) {
+ log_err(cd, _("Can't format VERITY without device.\n"));
+ return -EINVAL;
+ }
+
+ if (!params || !params->data_device)
+ return -EINVAL;
+
+ if (params->hash_type > VERITY_MAX_HASH_TYPE) {
+ log_err(cd, _("Unsupported VERITY hash type %d.\n"), params->hash_type);
+ return -EINVAL;
+ }
+
+ if (VERITY_BLOCK_SIZE_OK(params->data_block_size) ||
+ VERITY_BLOCK_SIZE_OK(params->hash_block_size)) {
+ log_err(cd, _("Unsupported VERITY block size.\n"));
+ return -EINVAL;
+ }
+
+ if (params->hash_area_offset % 512) {
+ log_err(cd, _("Unsupported VERITY hash offset.\n"));
+ return -EINVAL;
+ }
+
+ if (!(cd->type = strdup(CRYPT_VERITY)))
+ return -ENOMEM;
+
+ r = crypt_set_data_device(cd, params->data_device);
+ if (r)
+ return r;
+ if (!params->data_size) {
+ r = device_size(cd->device, &data_device_size);
+ if (r < 0)
+ return r;
+
+ cd->u.verity.hdr.data_size = data_device_size / params->data_block_size;
+ } else
+ cd->u.verity.hdr.data_size = params->data_size;
+
+ hash_size = crypt_hash_size(params->hash_name);
+ if (hash_size <= 0) {
+ log_err(cd, _("Hash algorithm %s not supported.\n"),
+ params->hash_name);
+ return -EINVAL;
+ }
+ cd->u.verity.root_hash_size = hash_size;
+
+ cd->u.verity.root_hash = malloc(cd->u.verity.root_hash_size);
+ if (!cd->u.verity.root_hash)
+ return -ENOMEM;
+
+ cd->u.verity.hdr.flags = params->flags;
+ if (!(cd->u.verity.hdr.hash_name = strdup(params->hash_name)))
+ return -ENOMEM;
+ cd->u.verity.hdr.data_device = NULL;
+ cd->u.verity.hdr.data_block_size = params->data_block_size;
+ cd->u.verity.hdr.hash_block_size = params->hash_block_size;
+ cd->u.verity.hdr.hash_area_offset = params->hash_area_offset;
+ cd->u.verity.hdr.hash_type = params->hash_type;
+ cd->u.verity.hdr.flags = params->flags;
+ cd->u.verity.hdr.salt_size = params->salt_size;
+ if (!(cd->u.verity.hdr.salt = malloc(params->salt_size)))
+ return -ENOMEM;
+
+ if (params->salt)
+ memcpy(CONST_CAST(char*)cd->u.verity.hdr.salt, params->salt,
+ params->salt_size);
+ else
+ r = crypt_random_get(cd, CONST_CAST(char*)cd->u.verity.hdr.salt,
+ params->salt_size, CRYPT_RND_SALT);
+ if (r)
+ return r;
+
+ if (params->flags & CRYPT_VERITY_CREATE_HASH) {
+ r = VERITY_create(cd, &cd->u.verity.hdr,
+ cd->u.verity.root_hash, cd->u.verity.root_hash_size);
+ if (r)
+ return r;
+ }
+
+ if (!(params->flags & CRYPT_VERITY_NO_HEADER)) {
+ if (uuid)
+ cd->u.verity.uuid = strdup(uuid);
+ else {
+ r = VERITY_UUID_generate(cd, &cd->u.verity.uuid);
+ if (r)
+ return r;
+ }
+
+ r = VERITY_write_sb(cd, cd->u.verity.hdr.hash_area_offset,
+ cd->u.verity.uuid,
+ &cd->u.verity.hdr);
+ }
+ return r;
+}
+
+int crypt_format(struct crypt_device *cd,
+ const char *type,
+ const char *cipher,
+ const char *cipher_mode,
+ const char *uuid,
+ const char *volume_key,
+ size_t volume_key_size,
+ void *params)
+{
+ int r;
+
+ if (!type)
+ return -EINVAL;
+
+ if (cd->type) {
+ log_dbg("Context already formatted as %s.", cd->type);
+ return -EINVAL;
+ }
+
+ log_dbg("Formatting device %s as type %s.", mdata_device_path(cd) ?: "(none)", type);
+
+ crypt_reset_null_type(cd);
+
+ r = init_crypto(cd);
+ if (r < 0)
+ return r;
+
+ if (isPLAIN(type))
+ r = _crypt_format_plain(cd, cipher, cipher_mode,
+ uuid, volume_key_size, params);
+ else if (isLUKS(type))
+ r = _crypt_format_luks1(cd, cipher, cipher_mode,
+ uuid, volume_key, volume_key_size, params);
+ else if (isLOOPAES(type))
+ r = _crypt_format_loopaes(cd, cipher, uuid, volume_key_size, params);
+ else if (isVERITY(type))
+ r = _crypt_format_verity(cd, uuid, params);
+ else {
+ log_err(cd, _("Unknown crypt device type %s requested.\n"), type);
+ r = -EINVAL;
+ }
+
+ if (r < 0) {
+ crypt_set_null_type(cd);
+ crypt_free_volume_key(cd->volume_key);
+ cd->volume_key = NULL;
+ }
+
+ return r;
+}
+
+int crypt_load(struct crypt_device *cd,
+ const char *requested_type,
+ void *params)
+{
+ int r;
+
+ log_dbg("Trying to load %s crypt type from device %s.",
+ requested_type ?: "any", mdata_device_path(cd) ?: "(none)");
+
+ if (!crypt_metadata_device(cd))
+ return -EINVAL;
+
+ crypt_reset_null_type(cd);
+
+ if (!requested_type || isLUKS(requested_type)) {
+ if (cd->type && !isLUKS(cd->type)) {
+ log_dbg("Context is already initialised to type %s", cd->type);
+ return -EINVAL;
+ }
+
+ r = _crypt_load_luks1(cd, 1, 0);
+ } else if (isVERITY(requested_type)) {
+ if (cd->type && !isVERITY(cd->type)) {
+ log_dbg("Context is already initialised to type %s", cd->type);
+ return -EINVAL;
+ }
+ r = _crypt_load_verity(cd, params);
+ } else if (isTCRYPT(requested_type)) {
+ if (cd->type && !isTCRYPT(cd->type)) {
+ log_dbg("Context is already initialised to type %s", cd->type);
+ return -EINVAL;
+ }
+ r = _crypt_load_tcrypt(cd, params);
+ } else
+ return -EINVAL;
+
+ return r;
+}
+
+int crypt_repair(struct crypt_device *cd,
+ const char *requested_type,
+ void *params __attribute__((unused)))
+{
+ int r;
+
+ log_dbg("Trying to repair %s crypt type from device %s.",
+ requested_type ?: "any", mdata_device_path(cd) ?: "(none)");
+
+ if (!crypt_metadata_device(cd))
+ return -EINVAL;
+
+ if (requested_type && !isLUKS(requested_type))
+ return -EINVAL;
+
+
+ /* Load with repair */
+ r = _crypt_load_luks1(cd, 1, 1);
+ if (r < 0)
+ return r;
+
+ /* cd->type and header must be set in context */
+ r = crypt_check_data_device_size(cd);
+ if (r < 0)
+ crypt_set_null_type(cd);
+
+ return r;
+}
+
+int crypt_resize(struct crypt_device *cd, const char *name, uint64_t new_size)
+{
+ struct crypt_dm_active_device dmd;
+ int r;
+
+ /* Device context type must be initialised */
+ if (!cd->type)
+ return -EINVAL;
+
+ log_dbg("Resizing device %s to %" PRIu64 " sectors.", name, new_size);
+
+ r = dm_query_device(cd, name, DM_ACTIVE_DEVICE | DM_ACTIVE_CRYPT_CIPHER |
+ DM_ACTIVE_UUID | DM_ACTIVE_CRYPT_KEYSIZE |
+ DM_ACTIVE_CRYPT_KEY, &dmd);
+ if (r < 0) {
+ log_err(NULL, _("Device %s is not active.\n"), name);
+ return -EINVAL;
+ }
+
+ if (!dmd.uuid || dmd.target != DM_CRYPT) {
+ r = -EINVAL;
+ goto out;
+ }
+
+ r = device_block_adjust(cd, dmd.data_device, DEV_OK,
+ dmd.u.crypt.offset, &new_size, &dmd.flags);
+ if (r)
+ goto out;
+
+ if (new_size == dmd.size) {
+ log_dbg("Device has already requested size %" PRIu64
+ " sectors.", dmd.size);
+ r = 0;
+ } else {
+ dmd.size = new_size;
+ if (isTCRYPT(cd->type))
+ r = -ENOTSUP;
+ else
+ r = dm_create_device(cd, name, cd->type, &dmd, 1);
+ }
+out:
+ if (dmd.target == DM_CRYPT) {
+ crypt_free_volume_key(dmd.u.crypt.vk);
+ free(CONST_CAST(void*)dmd.u.crypt.cipher);
+ }
+ free(CONST_CAST(void*)dmd.data_device);
+ free(CONST_CAST(void*)dmd.uuid);
+
+ return r;
+}
+
+int crypt_set_uuid(struct crypt_device *cd, const char *uuid)
+{
+ if (!isLUKS(cd->type)) {
+ log_err(cd, _("This operation is not supported for this device type.\n"));
+ return -EINVAL;
+ }
+
+ if (uuid && !strncmp(uuid, cd->u.luks1.hdr.uuid, sizeof(cd->u.luks1.hdr.uuid))) {
+ log_dbg("UUID is the same as requested (%s) for device %s.",
+ uuid, mdata_device_path(cd));
+ return 0;
+ }
+
+ if (uuid)
+ log_dbg("Requested new UUID change to %s for %s.", uuid, mdata_device_path(cd));
+ else
+ log_dbg("Requested new UUID refresh for %s.", mdata_device_path(cd));
+
+ if (!crypt_confirm(cd, _("Do you really want to change UUID of device?")))
+ return -EPERM;
+
+ return LUKS_hdr_uuid_set(&cd->u.luks1.hdr, uuid, cd);
+}
+
+int crypt_header_backup(struct crypt_device *cd,
+ const char *requested_type,
+ const char *backup_file)
+{
+ int r;
+
+ if ((requested_type && !isLUKS(requested_type)) || !backup_file)
+ return -EINVAL;
+
+ if (cd->type && !isLUKS(cd->type))
+ return -EINVAL;
+
+ r = init_crypto(cd);
+ if (r < 0)
+ return r;
+
+ log_dbg("Requested header backup of device %s (%s) to "
+ "file %s.", mdata_device_path(cd), requested_type, backup_file);
+
+ r = LUKS_hdr_backup(backup_file, cd);
+ return r;
+}
+
+int crypt_header_restore(struct crypt_device *cd,
+ const char *requested_type,
+ const char *backup_file)
+{
+ struct luks_phdr hdr;
+ int r;
+
+ if (requested_type && !isLUKS(requested_type))
+ return -EINVAL;
+
+ if (cd->type && !isLUKS(cd->type))
+ return -EINVAL;
+
+ r = init_crypto(cd);
+ if (r < 0)
+ return r;
+
+ log_dbg("Requested header restore to device %s (%s) from "
+ "file %s.", mdata_device_path(cd), requested_type, backup_file);
+
+ r = LUKS_hdr_restore(backup_file, isLUKS(cd->type) ? &cd->u.luks1.hdr : &hdr, cd);
+
+ crypt_memzero(&hdr, sizeof(hdr));
+ return r;
+}
+
+void crypt_free(struct crypt_device *cd)
+{
+ if (cd) {
+ log_dbg("Releasing crypt device %s context.", mdata_device_path(cd));
+
+ dm_backend_exit();
+ crypt_free_volume_key(cd->volume_key);
+
+ device_free(cd->device);
+ device_free(cd->metadata_device);
+
+ if (isPLAIN(cd->type)) {
+ free(CONST_CAST(void*)cd->u.plain.hdr.hash);
+ free(cd->u.plain.cipher);
+ free(cd->u.plain.cipher_mode);
+ } else if (isLOOPAES(cd->type)) {
+ free(CONST_CAST(void*)cd->u.loopaes.hdr.hash);
+ free(cd->u.loopaes.cipher);
+ } else if (isVERITY(cd->type)) {
+ free(CONST_CAST(void*)cd->u.verity.hdr.hash_name);
+ free(CONST_CAST(void*)cd->u.verity.hdr.salt);
+ free(cd->u.verity.root_hash);
+ free(cd->u.verity.uuid);
+ } else if (!cd->type) {
+ free(cd->u.none.active_name);
+ }
+
+ free(cd->type);
+ /* Some structures can contain keys (TCRYPT), wipe it */
+ crypt_memzero(cd, sizeof(*cd));
+ free(cd);
+ }
+}
+
+int crypt_suspend(struct crypt_device *cd,
+ const char *name)
+{
+ crypt_status_info ci;
+ int r;
+
+ log_dbg("Suspending volume %s.", name);
+
+ if (cd->type) {
+ r = onlyLUKS(cd);
+ } else {
+ r = crypt_uuid_type_cmp(cd, CRYPT_LUKS1);
+ if (r < 0)
+ log_err(cd, _("This operation is supported only for LUKS device.\n"));
+ }
+
+ if (r < 0)
+ return r;
+
+ ci = crypt_status(NULL, name);
+ if (ci < CRYPT_ACTIVE) {
+ log_err(cd, _("Volume %s is not active.\n"), name);
+ return -EINVAL;
+ }
+
+ dm_backend_init();
+
+ r = dm_status_suspended(cd, name);
+ if (r < 0)
+ goto out;
+
+ if (r) {
+ log_err(cd, _("Volume %s is already suspended.\n"), name);
+ r = -EINVAL;
+ goto out;
+ }
+
+ r = dm_suspend_and_wipe_key(cd, name);
+ if (r == -ENOTSUP)
+ log_err(cd, _("Suspend is not supported for device %s.\n"), name);
+ else if (r)
+ log_err(cd, _("Error during suspending device %s.\n"), name);
+out:
+ dm_backend_exit();
+ return r;
+}
+
+int crypt_resume_by_passphrase(struct crypt_device *cd,
+ const char *name,
+ int keyslot,
+ const char *passphrase,
+ size_t passphrase_size)
+{
+ struct volume_key *vk = NULL;
+ int r;
+
+ log_dbg("Resuming volume %s.", name);
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
+
+ r = dm_status_suspended(cd, name);
+ if (r < 0)
+ return r;
+
+ if (!r) {
+ log_err(cd, _("Volume %s is not suspended.\n"), name);
+ return -EINVAL;
+ }
+
+ if (passphrase) {
+ r = LUKS_open_key_with_hdr(keyslot, passphrase, passphrase_size,
+ &cd->u.luks1.hdr, &vk, cd);
+ } else
+ r = volume_key_by_terminal_passphrase(cd, keyslot, &vk);
+
+ if (r >= 0) {
+ keyslot = r;
+ r = dm_resume_and_reinstate_key(cd, name, vk->keylength, vk->key);
+ if (r == -ENOTSUP)
+ log_err(cd, _("Resume is not supported for device %s.\n"), name);
+ else if (r)
+ log_err(cd, _("Error during resuming device %s.\n"), name);
+ } else
+ r = keyslot;
+
+ crypt_free_volume_key(vk);
+ return r < 0 ? r : keyslot;
+}
+
+int crypt_resume_by_keyfile_offset(struct crypt_device *cd,
+ const char *name,
+ int keyslot,
+ const char *keyfile,
+ size_t keyfile_size,
+ size_t keyfile_offset)
+{
+ struct volume_key *vk = NULL;
+ char *passphrase_read = NULL;
+ size_t passphrase_size_read;
+ int r;
+
+ log_dbg("Resuming volume %s.", name);
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
+
+ r = dm_status_suspended(cd, name);
+ if (r < 0)
+ return r;
+
+ if (!r) {
+ log_err(cd, _("Volume %s is not suspended.\n"), name);
+ return -EINVAL;
+ }
+
+ if (!keyfile)
+ return -EINVAL;
+
+ r = key_from_file(cd, _("Enter passphrase: "), &passphrase_read,
+ &passphrase_size_read, keyfile, keyfile_offset,
+ keyfile_size);
+ if (r < 0)
+ goto out;
+
+ r = LUKS_open_key_with_hdr(keyslot, passphrase_read,
+ passphrase_size_read, &cd->u.luks1.hdr, &vk, cd);
+ if (r < 0)
+ goto out;
+
+ keyslot = r;
+ r = dm_resume_and_reinstate_key(cd, name, vk->keylength, vk->key);
+ if (r)
+ log_err(cd, _("Error during resuming device %s.\n"), name);
+out:
+ crypt_safe_free(passphrase_read);
+ crypt_free_volume_key(vk);
+ return r < 0 ? r : keyslot;
+}
+
+int crypt_resume_by_keyfile(struct crypt_device *cd,
+ const char *name,
+ int keyslot,
+ const char *keyfile,
+ size_t keyfile_size)
+{
+ return crypt_resume_by_keyfile_offset(cd, name, keyslot,
+ keyfile, keyfile_size, 0);
+}
+
+// slot manipulation
+int crypt_keyslot_add_by_passphrase(struct crypt_device *cd,
+ int keyslot, // -1 any
+ const char *passphrase, // NULL -> terminal
+ size_t passphrase_size,
+ const char *new_passphrase, // NULL -> terminal
+ size_t new_passphrase_size)
+{
+ struct volume_key *vk = NULL;
+ char *password = NULL, *new_password = NULL;
+ size_t passwordLen, new_passwordLen;
+ int r;
+
+ log_dbg("Adding new keyslot, existing passphrase %sprovided,"
+ "new passphrase %sprovided.",
+ passphrase ? "" : "not ", new_passphrase ? "" : "not ");
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
+
+ r = keyslot_verify_or_find_empty(cd, &keyslot);
+ if (r)
+ return r;
+
+ if (!LUKS_keyslot_active_count(&cd->u.luks1.hdr)) {
+ /* No slots used, try to use pre-generated key in header */
+ if (cd->volume_key) {
+ vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
+ r = vk ? 0 : -ENOMEM;
+ } else {
+ log_err(cd, _("Cannot add key slot, all slots disabled and no volume key provided.\n"));
+ return -EINVAL;
+ }
+ } else if (passphrase) {
+ /* Passphrase provided, use it to unlock existing keyslot */
+ r = LUKS_open_key_with_hdr(CRYPT_ANY_SLOT, passphrase,
+ passphrase_size, &cd->u.luks1.hdr, &vk, cd);
+ } else {
+ /* Passphrase not provided, ask first and use it to unlock existing keyslot */
+ r = key_from_terminal(cd, _("Enter any passphrase: "),
+ &password, &passwordLen, 0);
+ if (r < 0)
+ goto out;
+
+ r = LUKS_open_key_with_hdr(CRYPT_ANY_SLOT, password,
+ passwordLen, &cd->u.luks1.hdr, &vk, cd);
+ crypt_safe_free(password);
+ }
+
+ if(r < 0)
+ goto out;
+
+ if (new_passphrase) {
+ new_password = CONST_CAST(char*)new_passphrase;
+ new_passwordLen = new_passphrase_size;
+ } else {
+ r = key_from_terminal(cd, _("Enter new passphrase for key slot: "),
+ &new_password, &new_passwordLen, 1);
+ if(r < 0)
+ goto out;
+ }
+
+ r = LUKS_set_key(keyslot, new_password, new_passwordLen,
+ &cd->u.luks1.hdr, vk, cd->iteration_time, &cd->u.luks1.PBKDF2_per_sec, cd);
+ if(r < 0)
+ goto out;
+
+ r = 0;
+out:
+ if (!new_passphrase)
+ crypt_safe_free(new_password);
+ crypt_free_volume_key(vk);
+ return r < 0 ? r : keyslot;
+}
+
+int crypt_keyslot_change_by_passphrase(struct crypt_device *cd,
+ int keyslot_old,
+ int keyslot_new,
+ const char *passphrase,
+ size_t passphrase_size,
+ const char *new_passphrase,
+ size_t new_passphrase_size)
+{
+ struct volume_key *vk = NULL;
+ int r;
+
+ log_dbg("Changing passphrase from old keyslot %d to new %d.",
+ keyslot_old, keyslot_new);
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
+
+ r = LUKS_open_key_with_hdr(keyslot_old, passphrase, passphrase_size,
+ &cd->u.luks1.hdr, &vk, cd);
+ if (r < 0)
+ goto out;
+
+ if (keyslot_old != CRYPT_ANY_SLOT && keyslot_old != r) {
+ log_dbg("Keyslot mismatch.");
+ goto out;
+ }
+ keyslot_old = r;
+
+ if (keyslot_new == CRYPT_ANY_SLOT) {
+ keyslot_new = LUKS_keyslot_find_empty(&cd->u.luks1.hdr);
+ if (keyslot_new < 0)
+ keyslot_new = keyslot_old;
+ }
+
+ if (keyslot_old == keyslot_new) {
+ log_dbg("Key slot %d is going to be overwritten.", keyslot_old);
+ (void)crypt_keyslot_destroy(cd, keyslot_old);
+ }
+
+ r = LUKS_set_key(keyslot_new, new_passphrase, new_passphrase_size,
+ &cd->u.luks1.hdr, vk, cd->iteration_time,
+ &cd->u.luks1.PBKDF2_per_sec, cd);
+
+ if (keyslot_old == keyslot_new) {
+ if (r >= 0)
+ log_verbose(cd, _("Key slot %d changed.\n"), keyslot_new);
+ } else {
+ if (r >= 0) {
+ log_verbose(cd, _("Replaced with key slot %d.\n"), keyslot_new);
+ r = crypt_keyslot_destroy(cd, keyslot_old);
+ }
+ }
+ if (r < 0)
+ log_err(cd, _("Failed to swap new key slot.\n"));
+out:
+ crypt_free_volume_key(vk);
+ return r < 0 ? r : keyslot_new;
+}
+
+int crypt_keyslot_add_by_keyfile_offset(struct crypt_device *cd,
+ int keyslot,
+ const char *keyfile,
+ size_t keyfile_size,
+ size_t keyfile_offset,
+ const char *new_keyfile,
+ size_t new_keyfile_size,
+ size_t new_keyfile_offset)
+{
+ struct volume_key *vk = NULL;
+ char *password = NULL; size_t passwordLen;
+ char *new_password = NULL; size_t new_passwordLen;
+ int r;
+
+ log_dbg("Adding new keyslot, existing keyfile %s, new keyfile %s.",
+ keyfile ?: "[none]", new_keyfile ?: "[none]");
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
+
+ r = keyslot_verify_or_find_empty(cd, &keyslot);
+ if (r)
+ return r;
+
+ if (!LUKS_keyslot_active_count(&cd->u.luks1.hdr)) {
+ /* No slots used, try to use pre-generated key in header */
+ if (cd->volume_key) {
+ vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
+ r = vk ? 0 : -ENOMEM;
+ } else {
+ log_err(cd, _("Cannot add key slot, all slots disabled and no volume key provided.\n"));
+ return -EINVAL;
+ }
+ } else {
+ /* Read password from file of (if NULL) from terminal */
+ if (keyfile)
+ r = key_from_file(cd, _("Enter any passphrase: "),
+ &password, &passwordLen,
+ keyfile, keyfile_offset, keyfile_size);
+ else
+ r = key_from_terminal(cd, _("Enter any passphrase: "),
+ &password, &passwordLen, 0);
+ if (r < 0)
+ goto out;
+
+ r = LUKS_open_key_with_hdr(CRYPT_ANY_SLOT, password, passwordLen,
+ &cd->u.luks1.hdr, &vk, cd);
+ }
+
+ if(r < 0)
+ goto out;
+
+ if (new_keyfile)
+ r = key_from_file(cd, _("Enter new passphrase for key slot: "),
+ &new_password, &new_passwordLen, new_keyfile,
+ new_keyfile_offset, new_keyfile_size);
+ else
+ r = key_from_terminal(cd, _("Enter new passphrase for key slot: "),
+ &new_password, &new_passwordLen, 1);
+ if (r < 0)
+ goto out;
+
+ r = LUKS_set_key(keyslot, new_password, new_passwordLen,
+ &cd->u.luks1.hdr, vk, cd->iteration_time, &cd->u.luks1.PBKDF2_per_sec, cd);
+out:
+ crypt_safe_free(password);
+ crypt_safe_free(new_password);
+ crypt_free_volume_key(vk);
+ return r < 0 ? r : keyslot;
+}
+
+int crypt_keyslot_add_by_keyfile(struct crypt_device *cd,
+ int keyslot,
+ const char *keyfile,
+ size_t keyfile_size,
+ const char *new_keyfile,
+ size_t new_keyfile_size)
+{
+ return crypt_keyslot_add_by_keyfile_offset(cd, keyslot,
+ keyfile, keyfile_size, 0,
+ new_keyfile, new_keyfile_size, 0);
+}
+
+int crypt_keyslot_add_by_volume_key(struct crypt_device *cd,
+ int keyslot,
+ const char *volume_key,
+ size_t volume_key_size,
+ const char *passphrase,
+ size_t passphrase_size)
+{
+ struct volume_key *vk = NULL;
+ int r;
+ char *new_password = NULL; size_t new_passwordLen;
+
+ log_dbg("Adding new keyslot %d using volume key.", keyslot);
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
+
+ if (volume_key)
+ vk = crypt_alloc_volume_key(volume_key_size, volume_key);
+ else if (cd->volume_key)
+ vk = crypt_alloc_volume_key(cd->volume_key->keylength, cd->volume_key->key);
+
+ if (!vk)
+ return -ENOMEM;
+
+ r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
+ if (r < 0) {
+ log_err(cd, _("Volume key does not match the volume.\n"));
+ goto out;
+ }
+
+ r = keyslot_verify_or_find_empty(cd, &keyslot);
+ if (r)
+ goto out;
+
+ if (!passphrase) {
+ r = key_from_terminal(cd, _("Enter new passphrase for key slot: "),
+ &new_password, &new_passwordLen, 1);
+ if (r < 0)
+ goto out;
+ passphrase = new_password;
+ passphrase_size = new_passwordLen;
+ }
+
+ r = LUKS_set_key(keyslot, passphrase, passphrase_size,
+ &cd->u.luks1.hdr, vk, cd->iteration_time, &cd->u.luks1.PBKDF2_per_sec, cd);
+out:
+ crypt_safe_free(new_password);
+ crypt_free_volume_key(vk);
+ return (r < 0) ? r : keyslot;
+}
+
+int crypt_keyslot_destroy(struct crypt_device *cd, int keyslot)
+{
+ crypt_keyslot_info ki;
+ int r;
+
+ log_dbg("Destroying keyslot %d.", keyslot);
+
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
- devfd = open(device, O_RDWR | O_DIRECT | O_SYNC);
- if(devfd == -1) {
- set_error("Can't wipe header on device %s", device);
+ ki = crypt_keyslot_status(cd, keyslot);
+ if (ki == CRYPT_SLOT_INVALID) {
+ log_err(cd, _("Key slot %d is invalid.\n"), keyslot);
return -EINVAL;
}
- buffer = malloc(size);
- if (!buffer) {
- close(devfd);
- return -ENOMEM;
+ if (ki == CRYPT_SLOT_INACTIVE) {
+ log_err(cd, _("Key slot %d is not used.\n"), keyslot);
+ return -EINVAL;
}
- memset(buffer, 0, size);
-
- r = write_blockwise(devfd, buffer, size) < size ? -EIO : 0;
-
- free(buffer);
- close(devfd);
- return r;
+ return LUKS_del_key(keyslot, &cd->u.luks1.hdr, cd);
}
-static int parse_into_name_and_mode(const char *nameAndMode, char *name,
- char *mode)
+// activation/deactivation of device mapping
+int crypt_activate_by_passphrase(struct crypt_device *cd,
+ const char *name,
+ int keyslot,
+ const char *passphrase,
+ size_t passphrase_size,
+ uint32_t flags)
{
-/* Token content stringification, see info cpp/stringification */
-#define str(s) #s
-#define xstr(s) str(s)
-#define scanpattern1 "%" xstr(LUKS_CIPHERNAME_L) "[^-]-%" xstr(LUKS_CIPHERMODE_L) "s"
-#define scanpattern2 "%" xstr(LUKS_CIPHERNAME_L) "[^-]"
-
+ crypt_status_info ci;
+ struct volume_key *vk = NULL;
+ char *read_passphrase = NULL;
+ size_t passphraseLen = 0;
int r;
- if(sscanf(nameAndMode,scanpattern1, name, mode) != 2) {
- if((r = sscanf(nameAndMode,scanpattern2,name)) == 1) {
- strncpy(mode,"cbc-plain",10);
- }
- else {
- set_error("no known cipher-spec pattern detected");
+ log_dbg("%s volume %s [keyslot %d] using %spassphrase.",
+ name ? "Activating" : "Checking", name ?: "",
+ keyslot, passphrase ? "" : "[none] ");
+
+ if (name) {
+ ci = crypt_status(NULL, name);
+ if (ci == CRYPT_INVALID)
return -EINVAL;
+ else if (ci >= CRYPT_ACTIVE) {
+ log_err(cd, _("Device %s already exists.\n"), name);
+ return -EEXIST;
}
}
- return 0;
+ /* plain, use hashed passphrase */
+ if (isPLAIN(cd->type)) {
+ if (!name)
+ return -EINVAL;
+
+ if (!passphrase) {
+ r = key_from_terminal(cd, NULL, &read_passphrase,
+ &passphraseLen, 0);
+ if (r < 0)
+ goto out;
+ passphrase = read_passphrase;
+ passphrase_size = passphraseLen;
+ }
+
+ r = process_key(cd, cd->u.plain.hdr.hash,
+ cd->u.plain.key_size,
+ passphrase, passphrase_size, &vk);
+ if (r < 0)
+ goto out;
+
+ r = PLAIN_activate(cd, name, vk, cd->u.plain.hdr.size, flags);
+ keyslot = 0;
+ } else if (isLUKS(cd->type)) {
+ /* provided passphrase, do not retry */
+ if (passphrase) {
+ r = LUKS_open_key_with_hdr(keyslot, passphrase,
+ passphrase_size, &cd->u.luks1.hdr, &vk, cd);
+ } else
+ r = volume_key_by_terminal_passphrase(cd, keyslot, &vk);
+
+ if (r >= 0) {
+ keyslot = r;
+ if (name)
+ r = LUKS1_activate(cd, name, vk, flags);
+ }
+ } else
+ r = -EINVAL;
+out:
+ crypt_safe_free(read_passphrase);
+ crypt_free_volume_key(vk);
-#undef sp1
-#undef sp2
-#undef str
-#undef xstr
+ return r < 0 ? r : keyslot;
}
-static int keyslot_is_valid(int keySlotIndex, struct crypt_options *options)
+int crypt_activate_by_keyfile_offset(struct crypt_device *cd,
+ const char *name,
+ int keyslot,
+ const char *keyfile,
+ size_t keyfile_size,
+ size_t keyfile_offset,
+ uint32_t flags)
{
- if(keySlotIndex >= LUKS_NUMKEYS || keySlotIndex < 0) {
- logger(options,CRYPT_LOG_ERROR,"Key slot %d is invalid, please pick between 0 and %d.\n", keySlotIndex, LUKS_NUMKEYS - 1);
- return 0;
- }
-
- return 1;
-}
-
-/* Select free keyslot or verifies that the one specified is empty */
-static int keyslot_from_option(int keySlotOption, struct luks_phdr *hdr, struct crypt_options *options) {
- if(keySlotOption >= 0) {
- if(!keyslot_is_valid(keySlotOption, options))
- return -EINVAL;
- else if(hdr->keyblock[keySlotOption].active != LUKS_KEY_DISABLED) {
- logger(options,CRYPT_LOG_ERROR,"Key slot %d is full, please pick another one", keySlotOption);
- return -EINVAL;
- } else {
- return keySlotOption;
- }
- } else {
- int i;
- /* Find empty key slot */
- for(i=0; i<LUKS_NUMKEYS; i++) {
- if(hdr->keyblock[i].active == LUKS_KEY_DISABLED) break;
- }
- if(i==LUKS_NUMKEYS) {
- logger(options,CRYPT_LOG_ERROR,"All slots full");
- return -EINVAL;
- }
- return i;
- }
-}
-
-static int __crypt_create_device(int reload, struct setup_backend *backend,
- struct crypt_options *options)
-{
- struct crypt_options tmp = {
- .name = options->name,
- };
- struct device_infos infos;
- char *key = NULL;
- unsigned int keyLen;
- char *processed_key = NULL;
+ crypt_status_info ci;
+ struct volume_key *vk = NULL;
+ char *passphrase_read = NULL;
+ size_t passphrase_size_read;
+ unsigned int key_count = 0;
int r;
- r = backend->status(0, &tmp, NULL);
- if (reload) {
- if (r < 0)
- return r;
- } else {
- if (r >= 0) {
- set_error("Device %s already exists.", options->name);
+ log_dbg("Activating volume %s [keyslot %d] using keyfile %s.",
+ name ?: "", keyslot, keyfile ?: "[none]");
+
+ if (name) {
+ ci = crypt_status(NULL, name);
+ if (ci == CRYPT_INVALID)
+ return -EINVAL;
+ else if (ci >= CRYPT_ACTIVE) {
+ log_err(cd, _("Device %s already exists.\n"), name);
return -EEXIST;
}
- if (r != -ENODEV)
- return r;
}
- if (options->key_size < 0 || options->key_size > 1024) {
- set_error("Invalid key size");
+ if (!keyfile)
return -EINVAL;
- }
-
- if (get_device_infos(options->device, &infos) < 0)
- return -ENOTBLK;
- if (!options->size) {
- options->size = infos.size;
- if (!options->size) {
- set_error("Not a block device");
- return -ENOTBLK;
- }
- if (options->size <= options->offset) {
- set_error("Invalid offset");
+ if (isPLAIN(cd->type)) {
+ if (!name)
return -EINVAL;
- }
- options->size -= options->offset;
- }
-
- if (infos.readonly)
- options->flags |= CRYPT_FLAG_READONLY;
- get_key("Enter passphrase: ", &key, &keyLen, options->key_size, options->key_file, options->passphrase_fd, options->timeout, options->flags);
- if (!key) {
- set_error("Key reading error");
- return -ENOENT;
- }
+ r = key_from_file(cd, _("Enter passphrase: "),
+ &passphrase_read, &passphrase_size_read,
+ keyfile, keyfile_offset, keyfile_size);
+ if (r < 0)
+ goto out;
- processed_key = process_key(options,key,keyLen);
- safe_free(key);
+ r = process_key(cd, cd->u.plain.hdr.hash,
+ cd->u.plain.key_size,
+ passphrase_read, passphrase_size_read, &vk);
+ if (r < 0)
+ goto out;
- if (!processed_key) {
- const char *error=get_error();
- if(error) {
- char *c_error_handling_sucks = NULL;
- if (asprintf(&c_error_handling_sucks,"Key processing error: %s",error) > 0)
- set_error(c_error_handling_sucks);
- free(c_error_handling_sucks);
- } else
- set_error("Key processing error");
- return -ENOENT;
- }
+ r = PLAIN_activate(cd, name, vk, cd->u.plain.hdr.size, flags);
+ } else if (isLUKS(cd->type)) {
+ r = key_from_file(cd, _("Enter passphrase: "), &passphrase_read,
+ &passphrase_size_read, keyfile, keyfile_offset, keyfile_size);
+ if (r < 0)
+ goto out;
+ r = LUKS_open_key_with_hdr(keyslot, passphrase_read,
+ passphrase_size_read, &cd->u.luks1.hdr, &vk, cd);
+ if (r < 0)
+ goto out;
+ keyslot = r;
- r = backend->create(reload, options, processed_key, NULL);
+ if (name) {
+ r = LUKS1_activate(cd, name, vk, flags);
+ if (r < 0)
+ goto out;
+ }
+ r = keyslot;
+ } else if (isLOOPAES(cd->type)) {
+ r = key_from_file(cd, NULL, &passphrase_read, &passphrase_size_read,
+ keyfile, keyfile_offset, keyfile_size);
+ if (r < 0)
+ goto out;
+ r = LOOPAES_parse_keyfile(cd, &vk, cd->u.loopaes.hdr.hash, &key_count,
+ passphrase_read, passphrase_size_read);
+ if (r < 0)
+ goto out;
+ if (name)
+ r = LOOPAES_activate(cd, name, cd->u.loopaes.cipher,
+ key_count, vk, flags);
+ } else
+ r = -EINVAL;
- safe_free(processed_key);
+out:
+ crypt_safe_free(passphrase_read);
+ crypt_free_volume_key(vk);
return r;
}
-static int __crypt_query_device(int details, struct setup_backend *backend,
- struct crypt_options *options)
+int crypt_activate_by_keyfile(struct crypt_device *cd,
+ const char *name,
+ int keyslot,
+ const char *keyfile,
+ size_t keyfile_size,
+ uint32_t flags)
{
- int r = backend->status(details, options, NULL);
- if (r == -ENODEV)
- return 0;
- else if (r >= 0)
- return 1;
- else
- return r;
+ return crypt_activate_by_keyfile_offset(cd, name, keyslot, keyfile,
+ keyfile_size, 0, flags);
}
-static int __crypt_resize_device(int details, struct setup_backend *backend,
- struct crypt_options *options)
+int crypt_activate_by_volume_key(struct crypt_device *cd,
+ const char *name,
+ const char *volume_key,
+ size_t volume_key_size,
+ uint32_t flags)
{
- struct crypt_options tmp = {
- .name = options->name,
- };
- struct device_infos infos;
- char *key = NULL;
- int r;
+ crypt_status_info ci;
+ struct volume_key *vk = NULL;
+ int r = -EINVAL;
- r = backend->status(1, &tmp, &key);
- if (r < 0)
- return r;
-
- if (get_device_infos(tmp.device, &infos) < 0)
- return -EINVAL;
+ log_dbg("Activating volume %s by volume key.", name ?: "[none]");
- if (!options->size) {
- options->size = infos.size;
- if (!options->size) {
- set_error("Not a block device");
- return -ENOTBLK;
- }
- if (options->size <= tmp.offset) {
- set_error("Invalid offset");
+ if (name) {
+ ci = crypt_status(NULL, name);
+ if (ci == CRYPT_INVALID)
return -EINVAL;
+ else if (ci >= CRYPT_ACTIVE) {
+ log_err(cd, _("Device %s already exists.\n"), name);
+ return -EEXIST;
}
- options->size -= tmp.offset;
}
- tmp.size = options->size;
- if (infos.readonly)
- options->flags |= CRYPT_FLAG_READONLY;
+ /* use key directly, no hash */
+ if (isPLAIN(cd->type)) {
+ if (!name)
+ return -EINVAL;
- r = backend->create(1, &tmp, key, NULL);
+ if (!volume_key || !volume_key_size || volume_key_size != cd->u.plain.key_size) {
+ log_err(cd, _("Incorrect volume key specified for plain device.\n"));
+ return -EINVAL;
+ }
- safe_free(key);
+ vk = crypt_alloc_volume_key(volume_key_size, volume_key);
+ if (!vk)
+ return -ENOMEM;
+
+ r = PLAIN_activate(cd, name, vk, cd->u.plain.hdr.size, flags);
+ } else if (isLUKS(cd->type)) {
+ /* If key is not provided, try to use internal key */
+ if (!volume_key) {
+ if (!cd->volume_key) {
+ log_err(cd, _("Volume key does not match the volume.\n"));
+ return -EINVAL;
+ }
+ volume_key_size = cd->volume_key->keylength;
+ volume_key = cd->volume_key->key;
+ }
- return r;
-}
+ vk = crypt_alloc_volume_key(volume_key_size, volume_key);
+ if (!vk)
+ return -ENOMEM;
+ r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
-static int __crypt_remove_device(int arg, struct setup_backend *backend,
- struct crypt_options *options)
-{
- int r;
+ if (r == -EPERM)
+ log_err(cd, _("Volume key does not match the volume.\n"));
- r = backend->status(0, options, NULL);
- if (r < 0)
- return r;
- if (r > 0) {
- set_error("Device busy");
- return -EBUSY;
- }
+ if (!r && name)
+ r = LUKS1_activate(cd, name, vk, flags);
+ } else if (isVERITY(cd->type)) {
+ /* volume_key == root hash */
+ if (!volume_key || !volume_key_size) {
+ log_err(cd, _("Incorrect root hash specified for verity device.\n"));
+ return -EINVAL;
+ }
+
+ r = VERITY_activate(cd, name, volume_key, volume_key_size,
+ &cd->u.verity.hdr, CRYPT_ACTIVATE_READONLY);
+
+ if (r == -EPERM) {
+ free(cd->u.verity.root_hash);
+ cd->u.verity.root_hash = NULL;
+ } if (!r) {
+ cd->u.verity.root_hash_size = volume_key_size;
+ if (!cd->u.verity.root_hash)
+ cd->u.verity.root_hash = malloc(volume_key_size);
+ if (cd->u.verity.root_hash)
+ memcpy(cd->u.verity.root_hash, volume_key, volume_key_size);
+ }
+ } else if (isTCRYPT(cd->type)) {
+ if (!name)
+ return 0;
+ r = TCRYPT_activate(cd, name, &cd->u.tcrypt.hdr,
+ &cd->u.tcrypt.params, flags);
+ } else
+ log_err(cd, _("Device type is not properly initialised.\n"));
- return backend->remove(0, options);
+ crypt_free_volume_key(vk);
+
+ return r;
}
-static int __crypt_luks_format(int arg, struct setup_backend *backend, struct crypt_options *options)
+int crypt_deactivate(struct crypt_device *cd, const char *name)
{
+ struct crypt_device *fake_cd = NULL;
int r;
- struct luks_phdr header;
- struct luks_masterkey *mk=NULL;
- char *password=NULL;
- char cipherName[LUKS_CIPHERNAME_L];
- char cipherMode[LUKS_CIPHERMODE_L];
- unsigned int passwordLen;
- int PBKDF2perSecond;
- int keyIndex;
-
- if (!LUKS_device_ready(options->device, O_RDWR | O_EXCL))
- return -ENOTBLK;
-
- mk = LUKS_generate_masterkey(options->key_size);
- if(NULL == mk) return -ENOMEM; // FIXME This may be misleading, since we don't know what went wrong
-
-#ifdef LUKS_DEBUG
-#define printoffset(entry) logger(options, CRYPT_LOG_ERROR, ("offset of " #entry " = %d\n", (char *)(&header.entry)-(char *)(&header))
-
- logger(options, CRYPT_LOG_ERROR, "sizeof phdr %d, key slot %d\n",sizeof(struct luks_phdr),sizeof(header.keyblock[0]));
-
- printoffset(magic);
- printoffset(version);
- printoffset(cipherName);
- printoffset(cipherMode);
- printoffset(hashSpec);
- printoffset(payloadOffset);
- printoffset(keyBytes);
- printoffset(mkDigest);
- printoffset(mkDigestSalt);
- printoffset(mkDigestIterations);
- printoffset(uuid);
-#endif
+ if (!name)
+ return -EINVAL;
- r = parse_into_name_and_mode(options->cipher, cipherName, cipherMode);
- if(r < 0) return r;
+ log_dbg("Deactivating volume %s.", name);
- r = LUKS_generate_phdr(&header,mk,cipherName, cipherMode,LUKS_STRIPES, options->align_payload);
- if(r < 0) {
- set_error("Can't generate phdr");
- return r;
+ if (!cd) {
+ r = crypt_init_by_name(&fake_cd, name);
+ if (r < 0)
+ return r;
+ cd = fake_cd;
}
- keyIndex = keyslot_from_option(options->key_slot, &header, options);
- if(keyIndex == -EINVAL) {
- r = -EINVAL; goto out;
- }
-
- PBKDF2perSecond = LUKS_benchmarkt_iterations();
- header.keyblock[keyIndex].passwordIterations = at_least_one(PBKDF2perSecond * ((float)options->iteration_time / 1000.0));
-#ifdef LUKS_DEBUG
- logger(options->icb->log,CRYPT_LOG_ERROR, "pitr %d\n", header.keyblock[0].passwordIterations);
-#endif
- get_key("Enter LUKS passphrase: ",&password,&passwordLen, 0, options->new_key_file, options->passphrase_fd, options->timeout, options->flags);
- if(!password) {
- r = -EINVAL; goto out;
+ switch (crypt_status(cd, name)) {
+ case CRYPT_ACTIVE:
+ case CRYPT_BUSY:
+ if (isTCRYPT(cd->type))
+ r = TCRYPT_deactivate(cd, name);
+ else
+ r = dm_remove_device(cd, name, 0, 0);
+ if (r < 0 && crypt_status(cd, name) == CRYPT_BUSY) {
+ log_err(cd, _("Device %s is still in use.\n"), name);
+ r = -EBUSY;
+ }
+ break;
+ case CRYPT_INACTIVE:
+ log_err(cd, _("Device %s is not active.\n"), name);
+ r = -ENODEV;
+ break;
+ default:
+ log_err(cd, _("Invalid device %s.\n"), name);
+ r = -EINVAL;
}
- /* Wipe first 8 sectors - fs magic numbers etc. */
- r = wipe_device_header(options->device, 8);
- if(r < 0) goto out;
-
- /* Set key, also writes phdr */
- r = LUKS_set_key(options->device, keyIndex, password, passwordLen, &header, mk, backend);
- if(r < 0) goto out;
+ crypt_free(fake_cd);
- r = 0;
-out:
- LUKS_dealloc_masterkey(mk);
- safe_free(password);
return r;
}
-static int __crypt_luks_open(int arg, struct setup_backend *backend, struct crypt_options *options)
+int crypt_volume_key_get(struct crypt_device *cd,
+ int keyslot,
+ char *volume_key,
+ size_t *volume_key_size,
+ const char *passphrase,
+ size_t passphrase_size)
{
- struct luks_masterkey *mk=NULL;
- struct luks_phdr hdr;
- char *prompt = NULL;
- char *password;
- unsigned int passwordLen;
- struct device_infos infos;
- struct crypt_options tmp = {
- .name = options->name,
- };
- char *dmCipherSpec = NULL;
- int r, tries = options->tries;
- int excl = (options->flags & CRYPT_FLAG_NON_EXCLUSIVE_ACCESS) ? 0 : O_EXCL ;
+ struct volume_key *vk = NULL;
+ unsigned key_len;
+ int r = -EINVAL;
- r = backend->status(0, &tmp, NULL);
- if (r >= 0) {
- set_error("Device %s already exists.", options->name);
- return -EEXIST;
+ if (crypt_fips_mode()) {
+ log_err(cd, _("Function not available in FIPS mode.\n"));
+ return -EACCES;
+ }
+
+ key_len = crypt_get_volume_key_size(cd);
+ if (key_len > *volume_key_size) {
+ log_err(cd, _("Volume key buffer too small.\n"));
+ return -ENOMEM;
}
- if (!LUKS_device_ready(options->device, O_RDONLY | excl))
- return -ENOTBLK;
+ if (isPLAIN(cd->type) && cd->u.plain.hdr.hash) {
+ r = process_key(cd, cd->u.plain.hdr.hash, key_len,
+ passphrase, passphrase_size, &vk);
+ if (r < 0)
+ log_err(cd, _("Cannot retrieve volume key for plain device.\n"));
+ } else if (isLUKS(cd->type)) {
+ r = LUKS_open_key_with_hdr(keyslot, passphrase,
+ passphrase_size, &cd->u.luks1.hdr, &vk, cd);
+ } else if (isTCRYPT(cd->type)) {
+ r = TCRYPT_get_volume_key(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params, &vk);
+ } else
+ log_err(cd, _("This operation is not supported for %s crypt device.\n"), cd->type ?: "(none)");
- if (get_device_infos(options->device, &infos) < 0) {
- set_error("Can't get device information.\n");
- return -ENOTBLK;
+ if (r >= 0) {
+ memcpy(volume_key, vk->key, vk->keylength);
+ *volume_key_size = vk->keylength;
}
- if (infos.readonly)
- options->flags |= CRYPT_FLAG_READONLY;
+ crypt_free_volume_key(vk);
+ return r;
+}
- if(asprintf(&prompt, "Enter LUKS passphrase for %s: ", options->device) < 0)
- return -ENOMEM;
+int crypt_volume_key_verify(struct crypt_device *cd,
+ const char *volume_key,
+ size_t volume_key_size)
+{
+ struct volume_key *vk;
+ int r;
-start:
- mk=NULL;
+ r = onlyLUKS(cd);
+ if (r < 0)
+ return r;
- if(get_key(prompt, &password, &passwordLen, 0, options->key_file, options->passphrase_fd, options->timeout, options->flags))
- tries--;
- else
- tries = 0;
+ vk = crypt_alloc_volume_key(volume_key_size, volume_key);
+ if (!vk)
+ return -ENOMEM;
- if(!password) {
- r = -EINVAL; goto out;
- }
+ r = LUKS_verify_volume_key(&cd->u.luks1.hdr, vk);
- r = LUKS_open_any_key(options->device, password, passwordLen, &hdr, &mk, backend);
if (r == -EPERM)
- set_error("No key available with this passphrase.\n");
- if (r < 0)
- goto out1;
+ log_err(cd, _("Volume key does not match the volume.\n"));
- logger(options, CRYPT_LOG_NORMAL,"key slot %d unlocked.\n", r);
+ crypt_free_volume_key(vk);
+ return r;
+}
- options->offset = hdr.payloadOffset;
- if (asprintf(&dmCipherSpec, "%s-%s", hdr.cipherName, hdr.cipherMode) < 0) {
- r = -ENOMEM;
- goto out2;
- }
- options->cipher = dmCipherSpec;
- options->key_size = mk->keyLength;
- options->skip = 0;
-
- options->size = infos.size;
- if (!options->size) {
- set_error("Not a block device.\n");
- r = -ENOTBLK; goto out2;
- }
- if (options->size <= options->offset) {
- set_error("Invalid offset");
- r = -EINVAL; goto out2;
- }
- options->size -= options->offset;
- /* FIXME: code allows multiple crypt mapping, cannot use uuid then.
- * anyway, it is dangerous and can corrupt data. Remove it in next version! */
- r = backend->create(0, options, mk->key, excl ? hdr.uuid : NULL);
+void crypt_set_timeout(struct crypt_device *cd, uint64_t timeout_sec)
+{
+ log_dbg("Timeout set to %" PRIu64 " miliseconds.", timeout_sec);
+ cd->timeout = timeout_sec;
+}
- out2:
- free(dmCipherSpec);
- dmCipherSpec = NULL;
- out1:
- safe_free(password);
- out:
- LUKS_dealloc_masterkey(mk);
- if (r == -EPERM && tries > 0)
- goto start;
+void crypt_set_password_retry(struct crypt_device *cd, int tries)
+{
+ log_dbg("Password retry count set to %d.", tries);
+ cd->tries = tries;
+}
- free(prompt);
+void crypt_set_iteration_time(struct crypt_device *cd, uint64_t iteration_time_ms)
+{
+ log_dbg("Iteration time set to %" PRIu64 " miliseconds.", iteration_time_ms);
+ cd->iteration_time = iteration_time_ms;
+}
+void crypt_set_iterarion_time(struct crypt_device *cd, uint64_t iteration_time_ms)
+{
+ crypt_set_iteration_time(cd, iteration_time_ms);
+}
- return r;
+void crypt_set_password_verify(struct crypt_device *cd, int password_verify)
+{
+ log_dbg("Password verification %s.", password_verify ? "enabled" : "disabled");
+ cd->password_verify = password_verify ? 1 : 0;
}
-static int __crypt_luks_add_key(int arg, struct setup_backend *backend, struct crypt_options *options)
+void crypt_set_rng_type(struct crypt_device *cd, int rng_type)
{
- struct luks_masterkey *mk=NULL;
- struct luks_phdr hdr;
- char *password=NULL; unsigned int passwordLen;
- unsigned int keyIndex;
- const char *device = options->device;
- int r;
+ switch (rng_type) {
+ case CRYPT_RNG_URANDOM:
+ case CRYPT_RNG_RANDOM:
+ log_dbg("RNG set to %d (%s).", rng_type, rng_type ? "random" : "urandom");
+ cd->rng_type = rng_type;
+ }
+}
- if (!LUKS_device_ready(options->device, O_RDWR))
- return -ENOTBLK;
+int crypt_get_rng_type(struct crypt_device *cd)
+{
+ if (!cd)
+ return -EINVAL;
- r = LUKS_read_phdr(device, &hdr);
- if(r < 0) return r;
+ return cd->rng_type;
+}
+int crypt_memory_lock(struct crypt_device *cd, int lock)
+{
+ return lock ? crypt_memlock_inc(cd) : crypt_memlock_dec(cd);
+}
- keyIndex = keyslot_from_option(options->key_slot, &hdr, options);
- if(keyIndex == -EINVAL) {
- r = -EINVAL; goto out;
- }
+// reporting
+crypt_status_info crypt_status(struct crypt_device *cd, const char *name)
+{
+ int r;
- get_key("Enter any LUKS passphrase: ",
- &password,
- &passwordLen,
- 0,
- options->key_file,
- options->passphrase_fd,
- options->timeout,
- options->flags & ~(CRYPT_FLAG_VERIFY | CRYPT_FLAG_VERIFY_IF_POSSIBLE));
+ if (!cd)
+ dm_backend_init();
- if(!password) {
- r = -EINVAL; goto out;
- }
- r = LUKS_open_any_key(device, password, passwordLen, &hdr, &mk, backend);
- if(r < 0) {
- options->icb->log(CRYPT_LOG_ERROR,"No key available with this passphrase.\n");
- r = -EPERM; goto out;
- } else
- logger(options, CRYPT_LOG_NORMAL,"key slot %d unlocked.\n", r);
+ r = dm_status_device(cd, name);
- safe_free(password);
+ if (!cd)
+ dm_backend_exit();
- get_key("Enter new passphrase for key slot: ",
- &password,
- &passwordLen,
- 0,
- options->new_key_file,
- options->passphrase_fd,
- options->timeout,
- options->flags);
- if(!password) {
- r = -EINVAL; goto out;
- }
+ if (r < 0 && r != -ENODEV)
+ return CRYPT_INVALID;
- hdr.keyblock[keyIndex].passwordIterations = at_least_one(LUKS_benchmarkt_iterations() * ((float)options->iteration_time / 1000));
+ if (r == 0)
+ return CRYPT_ACTIVE;
- r = LUKS_set_key(device, keyIndex, password, passwordLen, &hdr, mk, backend);
- if(r < 0) goto out;
+ if (r > 0)
+ return CRYPT_BUSY;
- r = 0;
-out:
- safe_free(password);
- LUKS_dealloc_masterkey(mk);
- return r;
+ return CRYPT_INACTIVE;
}
-static int luks_remove_helper(int arg, struct setup_backend *backend, struct crypt_options *options, int supply_it)
+static void hexprint(struct crypt_device *cd, const char *d, int n, const char *sep)
{
- struct luks_masterkey *mk;
- struct luks_phdr hdr;
- char *password=NULL;
- unsigned int passwordLen;
- const char *device = options->device;
- int keyIndex;
- int openedIndex;
- int r, last_slot;
-
- if (!LUKS_device_ready(options->device, O_RDWR))
- return -ENOTBLK;
-
- if(supply_it) {
- get_key("Enter LUKS passphrase to be deleted: ",&password,&passwordLen, 0, options->new_key_file,
- options->passphrase_fd, options->timeout, options->flags);
- if(!password) {
- r = -EINVAL; goto out;
- }
-
- keyIndex = LUKS_open_any_key(device, password, passwordLen, &hdr, &mk, backend);
- if(keyIndex < 0) {
- options->icb->log(CRYPT_LOG_ERROR,"No remaining key available with this passphrase.\n");
- r = -EPERM; goto out;
- } else
- logger(options, CRYPT_LOG_NORMAL,"key slot %d selected for deletion.\n", keyIndex);
-
- safe_free(password);
- password = NULL;
- } else {
- keyIndex = options->key_slot;
- if (!keyslot_is_valid(keyIndex, options)) {
- r = -EINVAL; goto out;
- }
- }
+ int i;
+ for(i = 0; i < n; i++)
+ log_std(cd, "%02hhx%s", (const char)d[i], sep);
+}
- last_slot = LUKS_is_last_keyslot(options->device, keyIndex);
- if(last_slot && !(options->icb->yesDialog(_("This is the last keyslot. Device will become unusable after purging this key.")))) {
- r = -EINVAL; goto out;
- }
+static int _luks_dump(struct crypt_device *cd)
+{
+ int i;
- if(options->flags & CRYPT_FLAG_VERIFY_ON_DELKEY) {
- options->flags &= ~CRYPT_FLAG_VERIFY_ON_DELKEY;
- get_key("Enter any remaining LUKS passphrase: ",&password,&passwordLen, 0, options->key_file, options->passphrase_fd, options->timeout, options->flags);
- if(!password) {
- r = -EINVAL; goto out;
+ log_std(cd, "LUKS header information for %s\n\n", mdata_device_path(cd));
+ log_std(cd, "Version: \t%" PRIu16 "\n", cd->u.luks1.hdr.version);
+ log_std(cd, "Cipher name: \t%s\n", cd->u.luks1.hdr.cipherName);
+ log_std(cd, "Cipher mode: \t%s\n", cd->u.luks1.hdr.cipherMode);
+ log_std(cd, "Hash spec: \t%s\n", cd->u.luks1.hdr.hashSpec);
+ log_std(cd, "Payload offset:\t%" PRIu32 "\n", cd->u.luks1.hdr.payloadOffset);
+ log_std(cd, "MK bits: \t%" PRIu32 "\n", cd->u.luks1.hdr.keyBytes * 8);
+ log_std(cd, "MK digest: \t");
+ hexprint(cd, cd->u.luks1.hdr.mkDigest, LUKS_DIGESTSIZE, " ");
+ log_std(cd, "\n");
+ log_std(cd, "MK salt: \t");
+ hexprint(cd, cd->u.luks1.hdr.mkDigestSalt, LUKS_SALTSIZE/2, " ");
+ log_std(cd, "\n \t");
+ hexprint(cd, cd->u.luks1.hdr.mkDigestSalt+LUKS_SALTSIZE/2, LUKS_SALTSIZE/2, " ");
+ log_std(cd, "\n");
+ log_std(cd, "MK iterations: \t%" PRIu32 "\n", cd->u.luks1.hdr.mkDigestIterations);
+ log_std(cd, "UUID: \t%s\n\n", cd->u.luks1.hdr.uuid);
+ for(i = 0; i < LUKS_NUMKEYS; i++) {
+ if(cd->u.luks1.hdr.keyblock[i].active == LUKS_KEY_ENABLED) {
+ log_std(cd, "Key Slot %d: ENABLED\n",i);
+ log_std(cd, "\tIterations: \t%" PRIu32 "\n",
+ cd->u.luks1.hdr.keyblock[i].passwordIterations);
+ log_std(cd, "\tSalt: \t");
+ hexprint(cd, cd->u.luks1.hdr.keyblock[i].passwordSalt,
+ LUKS_SALTSIZE/2, " ");
+ log_std(cd, "\n\t \t");
+ hexprint(cd, cd->u.luks1.hdr.keyblock[i].passwordSalt +
+ LUKS_SALTSIZE/2, LUKS_SALTSIZE/2, " ");
+ log_std(cd, "\n");
+
+ log_std(cd, "\tKey material offset:\t%" PRIu32 "\n",
+ cd->u.luks1.hdr.keyblock[i].keyMaterialOffset);
+ log_std(cd, "\tAF stripes: \t%" PRIu32 "\n",
+ cd->u.luks1.hdr.keyblock[i].stripes);
}
-
- r = LUKS_read_phdr(device, &hdr);
- if(r < 0) {
- options->icb->log(CRYPT_LOG_ERROR,"Failed to access device.\n");
- r = -EIO; goto out;
- }
-
- if(!last_slot)
- hdr.keyblock[keyIndex].active = LUKS_KEY_DISABLED;
-
- openedIndex = LUKS_open_any_key_with_hdr(device, password, passwordLen, &hdr, &mk, backend);
- /* Clean up */
- if (openedIndex >= 0) {
- LUKS_dealloc_masterkey(mk);
- mk = NULL;
- }
- if(openedIndex < 0) {
- options->icb->log(CRYPT_LOG_ERROR,"No remaining key available with this passphrase.\n");
- r = -EPERM; goto out;
- } else
- logger(options, CRYPT_LOG_NORMAL,"key slot %d verified.\n", openedIndex);
+ else
+ log_std(cd, "Key Slot %d: DISABLED\n", i);
}
- r = LUKS_del_key(device, keyIndex);
- if(r < 0) goto out;
-
- r = 0;
-out:
- safe_free(password);
- return r;
+ return 0;
}
-static int __crypt_luks_kill_slot(int arg, struct setup_backend *backend, struct crypt_options *options) {
- return luks_remove_helper(arg, backend, options, 0);
+static int _verity_dump(struct crypt_device *cd)
+{
+ log_std(cd, "VERITY header information for %s\n", mdata_device_path(cd));
+ log_std(cd, "UUID: \t%s\n", cd->u.verity.uuid ?: "");
+ log_std(cd, "Hash type: \t%u\n", cd->u.verity.hdr.hash_type);
+ log_std(cd, "Data blocks: \t%" PRIu64 "\n", cd->u.verity.hdr.data_size);
+ log_std(cd, "Data block size: \t%u\n", cd->u.verity.hdr.data_block_size);
+ log_std(cd, "Hash block size: \t%u\n", cd->u.verity.hdr.hash_block_size);
+ log_std(cd, "Hash algorithm: \t%s\n", cd->u.verity.hdr.hash_name);
+ log_std(cd, "Salt: \t");
+ if (cd->u.verity.hdr.salt_size)
+ hexprint(cd, cd->u.verity.hdr.salt, cd->u.verity.hdr.salt_size, "");
+ else
+ log_std(cd, "-");
+ log_std(cd, "\n");
+ if (cd->u.verity.root_hash) {
+ log_std(cd, "Root hash: \t");
+ hexprint(cd, cd->u.verity.root_hash, cd->u.verity.root_hash_size, "");
+ log_std(cd, "\n");
+ }
+ return 0;
}
-static int __crypt_luks_remove_key(int arg, struct setup_backend *backend, struct crypt_options *options) {
- return luks_remove_helper(arg, backend, options, 1);
+int crypt_dump(struct crypt_device *cd)
+{
+ if (isLUKS(cd->type))
+ return _luks_dump(cd);
+ else if (isVERITY(cd->type))
+ return _verity_dump(cd);
+ else if (isTCRYPT(cd->type))
+ return TCRYPT_dump(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
+
+ log_err(cd, _("Dump operation is not supported for this device type.\n"));
+ return -EINVAL;
}
-static int crypt_job(int (*job)(int arg, struct setup_backend *backend,
- struct crypt_options *options),
- int arg, struct crypt_options *options)
+static int _init_by_name_crypt_none(struct crypt_device *cd)
{
- struct setup_backend *backend;
+ struct crypt_dm_active_device dmd = {};
int r;
- backend = get_setup_backend(default_backend);
-
- if (setup_enter(backend,options->icb->log) < 0) {
- r = -ENOSYS;
- goto out;
- }
-
- if (!backend) {
- set_error("No setup backend available");
- r = -ENOSYS;
- goto out;
- }
-
- r = job(arg, backend, options);
-out:
- setup_leave(backend);
- if (backend)
- put_setup_backend(backend);
+ if (cd->type || !cd->u.none.active_name)
+ return -EINVAL;
+ r = dm_query_device(cd, cd->u.none.active_name,
+ DM_ACTIVE_CRYPT_CIPHER |
+ DM_ACTIVE_CRYPT_KEYSIZE, &dmd);
if (r >= 0)
- set_error(NULL);
+ r = crypt_parse_name_and_mode(dmd.u.crypt.cipher,
+ cd->u.none.cipher, NULL,
+ cd->u.none.cipher_mode);
+
+ if (!r)
+ cd->u.none.key_size = dmd.u.crypt.vk->keylength;
+ crypt_free_volume_key(dmd.u.crypt.vk);
+ free(CONST_CAST(void*)dmd.u.crypt.cipher);
return r;
}
-int crypt_create_device(struct crypt_options *options)
+const char *crypt_get_cipher(struct crypt_device *cd)
{
- return crypt_job(__crypt_create_device, 0, options);
-}
+ if (isPLAIN(cd->type))
+ return cd->u.plain.cipher;
-int crypt_update_device(struct crypt_options *options)
-{
- return crypt_job(__crypt_create_device, 1, options);
-}
+ if (isLUKS(cd->type))
+ return cd->u.luks1.hdr.cipherName;
-int crypt_resize_device(struct crypt_options *options)
-{
- return crypt_job(__crypt_resize_device, 0, options);
-}
+ if (isLOOPAES(cd->type))
+ return cd->u.loopaes.cipher;
-int crypt_query_device(struct crypt_options *options)
-{
- return crypt_job(__crypt_query_device, 1, options);
-}
+ if (isTCRYPT(cd->type))
+ return cd->u.tcrypt.params.cipher;
-int crypt_remove_device(struct crypt_options *options)
-{
- return crypt_job(__crypt_remove_device, 0, options);
+ if (!cd->type && !_init_by_name_crypt_none(cd))
+ return cd->u.none.cipher;
+ return NULL;
}
-int crypt_luksFormat(struct crypt_options *options)
+const char *crypt_get_cipher_mode(struct crypt_device *cd)
{
- return crypt_job(__crypt_luks_format, 0, options);
+ if (isPLAIN(cd->type))
+ return cd->u.plain.cipher_mode;
+
+ if (isLUKS(cd->type))
+ return cd->u.luks1.hdr.cipherMode;
+
+ if (isLOOPAES(cd->type))
+ return cd->u.loopaes.cipher_mode;
+
+ if (isTCRYPT(cd->type))
+ return cd->u.tcrypt.params.mode;
+
+ if (!cd->type && !_init_by_name_crypt_none(cd))
+ return cd->u.none.cipher_mode;
+
+ return NULL;
}
-int crypt_luksOpen(struct crypt_options *options)
+const char *crypt_get_uuid(struct crypt_device *cd)
{
- return crypt_job(__crypt_luks_open, 0, options);
+ if (isLUKS(cd->type))
+ return cd->u.luks1.hdr.uuid;
+
+ if (isVERITY(cd->type))
+ return cd->u.verity.uuid;
+
+ return NULL;
}
-int crypt_luksKillSlot(struct crypt_options *options)
+const char *crypt_get_device_name(struct crypt_device *cd)
{
- return crypt_job(__crypt_luks_kill_slot, 0, options);
+ const char *path = device_block_path(cd->device);
+
+ if (!path)
+ path = device_path(cd->device);
+
+ return path;
}
-int crypt_luksRemoveKey(struct crypt_options *options)
+int crypt_get_volume_key_size(struct crypt_device *cd)
{
- return crypt_job(__crypt_luks_remove_key, 0, options);
+ if (isPLAIN(cd->type))
+ return cd->u.plain.key_size;
+
+ if (isLUKS(cd->type))
+ return cd->u.luks1.hdr.keyBytes;
+
+ if (isLOOPAES(cd->type))
+ return cd->u.loopaes.key_size;
+
+ if (isVERITY(cd->type))
+ return cd->u.verity.root_hash_size;
+
+ if (isTCRYPT(cd->type))
+ return cd->u.tcrypt.params.key_size;
+
+ if (!cd->type && !_init_by_name_crypt_none(cd))
+ return cd->u.none.key_size;
+
+ return 0;
}
-int crypt_luksAddKey(struct crypt_options *options)
+uint64_t crypt_get_data_offset(struct crypt_device *cd)
{
- return crypt_job(__crypt_luks_add_key, 0, options);
+ if (isPLAIN(cd->type))
+ return cd->u.plain.hdr.offset;
+
+ if (isLUKS(cd->type))
+ return cd->u.luks1.hdr.payloadOffset;
+
+ if (isLOOPAES(cd->type))
+ return cd->u.loopaes.hdr.offset;
+
+ if (isTCRYPT(cd->type))
+ return TCRYPT_get_data_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
+
+ return 0;
}
-int crypt_luksUUID(struct crypt_options *options)
+uint64_t crypt_get_iv_offset(struct crypt_device *cd)
{
- struct luks_phdr hdr;
- int r;
+ if (isPLAIN(cd->type))
+ return cd->u.plain.hdr.skip;
+
+ if (isLUKS(cd->type))
+ return 0;
+
+ if (isLOOPAES(cd->type))
+ return cd->u.loopaes.hdr.skip;
- r = LUKS_read_phdr(options->device,&hdr);
- if(r < 0) return r;
+ if (isTCRYPT(cd->type))
+ return TCRYPT_get_iv_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
- options->icb->log(CRYPT_LOG_NORMAL,hdr.uuid);
- options->icb->log(CRYPT_LOG_NORMAL,"\n");
return 0;
}
-int crypt_isLuks(struct crypt_options *options)
+crypt_keyslot_info crypt_keyslot_status(struct crypt_device *cd, int keyslot)
{
- struct luks_phdr hdr;
- return LUKS_read_phdr(options->device,&hdr);
+ if (onlyLUKS(cd) < 0)
+ return CRYPT_SLOT_INVALID;
+
+ return LUKS_keyslot_info(&cd->u.luks1.hdr, keyslot);
}
-int crypt_luksDump(struct crypt_options *options)
+int crypt_keyslot_max(const char *type)
{
- struct luks_phdr hdr;
- int r,i;
-
- r = LUKS_read_phdr(options->device,&hdr);
- if(r < 0) return r;
-
- logger(options, CRYPT_LOG_NORMAL, "LUKS header information for %s\n\n",options->device);
- logger(options, CRYPT_LOG_NORMAL, "Version: \t%d\n",hdr.version);
- logger(options, CRYPT_LOG_NORMAL, "Cipher name: \t%s\n",hdr.cipherName);
- logger(options, CRYPT_LOG_NORMAL, "Cipher mode: \t%s\n",hdr.cipherMode);
- logger(options, CRYPT_LOG_NORMAL, "Hash spec: \t%s\n",hdr.hashSpec);
- logger(options, CRYPT_LOG_NORMAL, "Payload offset:\t%d\n",hdr.payloadOffset);
- logger(options, CRYPT_LOG_NORMAL, "MK bits: \t%d\n",hdr.keyBytes*8);
- logger(options, CRYPT_LOG_NORMAL, "MK digest: \t");
- hexprintICB(options, CRYPT_LOG_NORMAL, hdr.mkDigest,LUKS_DIGESTSIZE);
- logger(options, CRYPT_LOG_NORMAL, "\n");
- logger(options, CRYPT_LOG_NORMAL, "MK salt: \t");
- hexprintICB(options, CRYPT_LOG_NORMAL, hdr.mkDigestSalt,LUKS_SALTSIZE/2);
- logger(options, CRYPT_LOG_NORMAL, "\n \t");
- hexprintICB(options, CRYPT_LOG_NORMAL, hdr.mkDigestSalt+LUKS_SALTSIZE/2,LUKS_SALTSIZE/2);
- logger(options, CRYPT_LOG_NORMAL, "\n");
- logger(options, CRYPT_LOG_NORMAL, "MK iterations: \t%d\n",hdr.mkDigestIterations);
- logger(options, CRYPT_LOG_NORMAL, "UUID: \t%s\n\n",hdr.uuid);
- for(i=0;i<LUKS_NUMKEYS;i++) {
- if(hdr.keyblock[i].active == LUKS_KEY_ENABLED) {
- logger(options, CRYPT_LOG_NORMAL, "Key Slot %d: ENABLED\n",i);
- logger(options, CRYPT_LOG_NORMAL, "\tIterations: \t%d\n",hdr.keyblock[i].passwordIterations);
- logger(options, CRYPT_LOG_NORMAL, "\tSalt: \t");
- hexprintICB(options, CRYPT_LOG_NORMAL, hdr.keyblock[i].passwordSalt,LUKS_SALTSIZE/2);
- logger(options, CRYPT_LOG_NORMAL, "\n\t \t");
- hexprintICB(options, CRYPT_LOG_NORMAL, hdr.keyblock[i].passwordSalt+LUKS_SALTSIZE/2,LUKS_SALTSIZE/2);
- logger(options, CRYPT_LOG_NORMAL, "\n");
-
- logger(options, CRYPT_LOG_NORMAL, "\tKey material offset:\t%d\n",hdr.keyblock[i].keyMaterialOffset);
- logger(options, CRYPT_LOG_NORMAL, "\tAF stripes: \t%d\n",hdr.keyblock[i].stripes);
- }
- else
- logger(options, CRYPT_LOG_NORMAL, "Key Slot %d: DISABLED\n",i);
- }
- return 0;
-}
+ if (type && isLUKS(type))
+ return LUKS_NUMKEYS;
+ return -EINVAL;
+}
-void crypt_get_error(char *buf, size_t size)
+int crypt_keyslot_area(struct crypt_device *cd,
+ int keyslot,
+ uint64_t *offset,
+ uint64_t *length)
{
- const char *error = get_error();
+ if (!isLUKS(cd->type))
+ return -EINVAL;
- if (!buf || size < 1)
- set_error(NULL);
- else if (error) {
- strncpy(buf, error, size - 1);
- buf[size - 1] = '\0';
- set_error(NULL);
- } else
- buf[0] = '\0';
+ return LUKS_keyslot_area(&cd->u.luks1.hdr, keyslot, offset, length);
}
-void crypt_put_options(struct crypt_options *options)
+const char *crypt_get_type(struct crypt_device *cd)
{
- if (options->flags & CRYPT_FLAG_FREE_DEVICE) {
- free((char *)options->device);
- options->device = NULL;
- options->flags &= ~CRYPT_FLAG_FREE_DEVICE;
- }
- if (options->flags & CRYPT_FLAG_FREE_CIPHER) {
- free((char *)options->cipher);
- options->cipher = NULL;
- options->flags &= ~CRYPT_FLAG_FREE_CIPHER;
- }
+ return cd->type;
}
-void crypt_set_default_backend(const char *backend)
+int crypt_get_verity_info(struct crypt_device *cd,
+ struct crypt_params_verity *vp)
{
- if (default_backend)
- free(default_backend);
- if (backend)
- default_backend = strdup(backend);
- else
- default_backend = NULL;
+ if (!isVERITY(cd->type) || !vp)
+ return -EINVAL;
+
+ vp->data_device = device_path(cd->device);
+ vp->hash_device = mdata_device_path(cd);
+ vp->hash_name = cd->u.verity.hdr.hash_name;
+ vp->salt = cd->u.verity.hdr.salt;
+ vp->salt_size = cd->u.verity.hdr.salt_size;
+ vp->data_block_size = cd->u.verity.hdr.data_block_size;
+ vp->hash_block_size = cd->u.verity.hdr.hash_block_size;
+ vp->data_size = cd->u.verity.hdr.data_size;
+ vp->hash_area_offset = cd->u.verity.hdr.hash_area_offset;
+ vp->hash_type = cd->u.verity.hdr.hash_type;
+ vp->flags = cd->u.verity.hdr.flags & CRYPT_VERITY_NO_HEADER;
+ return 0;
}
-const char *crypt_get_dir(void)
+int crypt_get_active_device(struct crypt_device *cd, const char *name,
+ struct crypt_active_device *cad)
{
- struct setup_backend *backend;
- const char *dir;
+ struct crypt_dm_active_device dmd;
+ int r;
- backend = get_setup_backend(default_backend);
- if (!backend)
- return NULL;
+ r = dm_query_device(cd, name, 0, &dmd);
+ if (r < 0)
+ return r;
- dir = backend->dir();
+ if (dmd.target != DM_CRYPT && dmd.target != DM_VERITY)
+ return -ENOTSUP;
- put_setup_backend(backend);
+ if (cd && isTCRYPT(cd->type)) {
+ cad->offset = TCRYPT_get_data_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
+ cad->iv_offset = TCRYPT_get_iv_offset(cd, &cd->u.tcrypt.hdr, &cd->u.tcrypt.params);
+ } else {
+ cad->offset = dmd.u.crypt.offset;
+ cad->iv_offset = dmd.u.crypt.iv_offset;
+ }
+ cad->size = dmd.size;
+ cad->flags = dmd.flags;
- return dir;
+ return 0;
}
-
-// Local Variables:
-// c-basic-offset: 8
-// indent-tabs-mode: nil
-// End:
projects / platform / upstream / cryptsetup.git / blobdiff