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Systemd/src/shared/user-record.c

2272 lines
102 KiB

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/mount.h>
#include "cgroup-util.h"
#include "dns-domain.h"
#include "env-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "hexdecoct.h"
#include "hostname-util.h"
#include "memory-util.h"
#include "path-util.h"
#include "pkcs11-util.h"
#include "rlimit-util.h"
#include "stat-util.h"
#include "string-table.h"
#include "strv.h"
#include "user-record.h"
#include "user-util.h"
#define DEFAULT_RATELIMIT_BURST 30
#define DEFAULT_RATELIMIT_INTERVAL_USEC (1*USEC_PER_MINUTE)
#if ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES
static int parse_alloc_uid(const char *path, const char *name, const char *t, uid_t *ret_uid) {
uid_t uid;
int r;
r = parse_uid(t, &uid);
if (r < 0)
return log_debug_errno(r, "%s: failed to parse %s %s, ignoring: %m", path, name, t);
if (uid == 0)
uid = 1;
*ret_uid = uid;
return 0;
}
#endif
int read_login_defs(UGIDAllocationRange *ret_defs, const char *path, const char *root) {
UGIDAllocationRange defs = {
.system_alloc_uid_min = SYSTEM_ALLOC_UID_MIN,
.system_uid_max = SYSTEM_UID_MAX,
.system_alloc_gid_min = SYSTEM_ALLOC_GID_MIN,
.system_gid_max = SYSTEM_GID_MAX,
};
#if ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES
_cleanup_fclose_ FILE *f = NULL;
int r;
if (!path)
path = "/etc/login.defs";
r = chase_symlinks_and_fopen_unlocked(path, root, CHASE_PREFIX_ROOT, "re", &f, NULL);
if (r == -ENOENT)
goto assign;
if (r < 0)
return log_debug_errno(r, "Failed to open %s: %m", path);
for (;;) {
_cleanup_free_ char *line = NULL;
char *t;
r = read_line(f, LINE_MAX, &line);
if (r < 0)
return log_debug_errno(r, "Failed to read %s: %m", path);
if (r == 0)
break;
if ((t = first_word(line, "SYS_UID_MIN")))
(void) parse_alloc_uid(path, "SYS_UID_MIN", t, &defs.system_alloc_uid_min);
else if ((t = first_word(line, "SYS_UID_MAX")))
(void) parse_alloc_uid(path, "SYS_UID_MAX", t, &defs.system_uid_max);
else if ((t = first_word(line, "SYS_GID_MIN")))
(void) parse_alloc_uid(path, "SYS_GID_MIN", t, &defs.system_alloc_gid_min);
else if ((t = first_word(line, "SYS_GID_MAX")))
(void) parse_alloc_uid(path, "SYS_GID_MAX", t, &defs.system_gid_max);
}
assign:
if (defs.system_alloc_uid_min > defs.system_uid_max) {
log_debug("%s: SYS_UID_MIN > SYS_UID_MAX, resetting.", path);
defs.system_alloc_uid_min = MIN(defs.system_uid_max - 1, (uid_t) SYSTEM_ALLOC_UID_MIN);
/* Look at sys_uid_max to make sure sys_uid_min..sys_uid_max remains a valid range. */
}
if (defs.system_alloc_gid_min > defs.system_gid_max) {
log_debug("%s: SYS_GID_MIN > SYS_GID_MAX, resetting.", path);
defs.system_alloc_gid_min = MIN(defs.system_gid_max - 1, (gid_t) SYSTEM_ALLOC_GID_MIN);
/* Look at sys_gid_max to make sure sys_gid_min..sys_gid_max remains a valid range. */
}
#endif
*ret_defs = defs;
return 0;
}
const UGIDAllocationRange *acquire_ugid_allocation_range(void) {
#if ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES
static thread_local UGIDAllocationRange defs = {
#else
static const UGIDAllocationRange defs = {
#endif
.system_alloc_uid_min = SYSTEM_ALLOC_UID_MIN,
.system_uid_max = SYSTEM_UID_MAX,
.system_alloc_gid_min = SYSTEM_ALLOC_GID_MIN,
.system_gid_max = SYSTEM_GID_MAX,
};
#if ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES
/* This function will ignore failure to read the file, so it should only be called from places where
* we don't crucially depend on the answer. In other words, it's appropriate for journald, but
* probably not for sysusers. */
static thread_local bool initialized = false;
if (!initialized) {
(void) read_login_defs(&defs, NULL, NULL);
initialized = true;
}
#endif
return &defs;
}
bool uid_is_system(uid_t uid) {
const UGIDAllocationRange *defs;
assert_se(defs = acquire_ugid_allocation_range());
return uid <= defs->system_uid_max;
}
bool gid_is_system(gid_t gid) {
const UGIDAllocationRange *defs;
assert_se(defs = acquire_ugid_allocation_range());
return gid <= defs->system_gid_max;
}
UserRecord* user_record_new(void) {
UserRecord *h;
h = new(UserRecord, 1);
if (!h)
return NULL;
*h = (UserRecord) {
.n_ref = 1,
.disposition = _USER_DISPOSITION_INVALID,
.last_change_usec = UINT64_MAX,
.last_password_change_usec = UINT64_MAX,
.umask = MODE_INVALID,
.nice_level = INT_MAX,
.not_before_usec = UINT64_MAX,
.not_after_usec = UINT64_MAX,
.locked = -1,
.storage = _USER_STORAGE_INVALID,
.access_mode = MODE_INVALID,
.disk_size = UINT64_MAX,
.disk_size_relative = UINT64_MAX,
.tasks_max = UINT64_MAX,
.memory_high = UINT64_MAX,
.memory_max = UINT64_MAX,
.cpu_weight = UINT64_MAX,
.io_weight = UINT64_MAX,
.uid = UID_INVALID,
.gid = GID_INVALID,
.nodev = true,
.nosuid = true,
.luks_discard = -1,
.luks_offline_discard = -1,
.luks_volume_key_size = UINT64_MAX,
.luks_pbkdf_time_cost_usec = UINT64_MAX,
.luks_pbkdf_memory_cost = UINT64_MAX,
.luks_pbkdf_parallel_threads = UINT64_MAX,
.disk_usage = UINT64_MAX,
.disk_free = UINT64_MAX,
.disk_ceiling = UINT64_MAX,
.disk_floor = UINT64_MAX,
.signed_locally = -1,
.good_authentication_counter = UINT64_MAX,
.bad_authentication_counter = UINT64_MAX,
.last_good_authentication_usec = UINT64_MAX,
.last_bad_authentication_usec = UINT64_MAX,
.ratelimit_begin_usec = UINT64_MAX,
.ratelimit_count = UINT64_MAX,
.ratelimit_interval_usec = UINT64_MAX,
.ratelimit_burst = UINT64_MAX,
.removable = -1,
.enforce_password_policy = -1,
.auto_login = -1,
.stop_delay_usec = UINT64_MAX,
.kill_processes = -1,
.password_change_min_usec = UINT64_MAX,
.password_change_max_usec = UINT64_MAX,
.password_change_warn_usec = UINT64_MAX,
.password_change_inactive_usec = UINT64_MAX,
.password_change_now = -1,
.pkcs11_protected_authentication_path_permitted = -1,
.fido2_user_presence_permitted = -1,
};
return h;
}
static void pkcs11_encrypted_key_done(Pkcs11EncryptedKey *k) {
if (!k)
return;
free(k->uri);
erase_and_free(k->data);
erase_and_free(k->hashed_password);
}
static void fido2_hmac_credential_done(Fido2HmacCredential *c) {
if (!c)
return;
free(c->id);
}
static void fido2_hmac_salt_done(Fido2HmacSalt *s) {
if (!s)
return;
fido2_hmac_credential_done(&s->credential);
erase_and_free(s->salt);
erase_and_free(s->hashed_password);
}
static void recovery_key_done(RecoveryKey *k) {
if (!k)
return;
free(k->type);
erase_and_free(k->hashed_password);
}
static UserRecord* user_record_free(UserRecord *h) {
if (!h)
return NULL;
free(h->user_name);
free(h->realm);
free(h->user_name_and_realm_auto);
free(h->real_name);
free(h->email_address);
erase_and_free(h->password_hint);
free(h->location);
free(h->icon_name);
free(h->shell);
strv_free(h->environment);
free(h->time_zone);
free(h->preferred_language);
rlimit_free_all(h->rlimits);
free(h->skeleton_directory);
strv_free_erase(h->hashed_password);
strv_free_erase(h->ssh_authorized_keys);
strv_free_erase(h->password);
strv_free_erase(h->token_pin);
free(h->cifs_service);
free(h->cifs_user_name);
free(h->cifs_domain);
free(h->image_path);
free(h->image_path_auto);
free(h->home_directory);
free(h->home_directory_auto);
strv_free(h->member_of);
free(h->file_system_type);
free(h->luks_cipher);
free(h->luks_cipher_mode);
free(h->luks_pbkdf_hash_algorithm);
free(h->luks_pbkdf_type);
free(h->state);
free(h->service);
strv_free(h->pkcs11_token_uri);
for (size_t i = 0; i < h->n_pkcs11_encrypted_key; i++)
pkcs11_encrypted_key_done(h->pkcs11_encrypted_key + i);
free(h->pkcs11_encrypted_key);
for (size_t i = 0; i < h->n_fido2_hmac_credential; i++)
fido2_hmac_credential_done(h->fido2_hmac_credential + i);
for (size_t i = 0; i < h->n_fido2_hmac_salt; i++)
fido2_hmac_salt_done(h->fido2_hmac_salt + i);
strv_free(h->recovery_key_type);
for (size_t i = 0; i < h->n_recovery_key; i++)
recovery_key_done(h->recovery_key + i);
json_variant_unref(h->json);
return mfree(h);
}
DEFINE_TRIVIAL_REF_UNREF_FUNC(UserRecord, user_record, user_record_free);
int json_dispatch_realm(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
r = dns_name_is_valid(n);
if (r < 0)
return json_log(variant, flags, r, "Failed to check if JSON field '%s' is a valid DNS domain.", strna(name));
if (r == 0)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid DNS domain.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
int json_dispatch_gecos(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
if (valid_gecos(n)) {
if (free_and_strdup(s, n) < 0)
return json_log_oom(variant, flags);
} else {
_cleanup_free_ char *m = NULL;
json_log(variant, flags|JSON_DEBUG, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid GECOS compatible string, mangling.", strna(name));
m = mangle_gecos(n);
if (!m)
return json_log_oom(variant, flags);
free_and_replace(*s, m);
}
return 0;
}
static int json_dispatch_nice(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
int *nl = userdata;
intmax_t m;
if (json_variant_is_null(variant)) {
*nl = INT_MAX;
return 0;
}
if (!json_variant_is_integer(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
m = json_variant_integer(variant);
if (m < PRIO_MIN || m >= PRIO_MAX)
return json_log(variant, flags, SYNTHETIC_ERRNO(ERANGE), "JSON field '%s' is not a valid nice level.", strna(name));
*nl = m;
return 0;
}
static int json_dispatch_rlimit_value(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
rlim_t *ret = userdata;
if (json_variant_is_null(variant))
*ret = RLIM_INFINITY;
else if (json_variant_is_unsigned(variant)) {
uintmax_t w;
w = json_variant_unsigned(variant);
if (w == RLIM_INFINITY || (uintmax_t) w != json_variant_unsigned(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(ERANGE), "Resource limit value '%s' is out of range.", name);
*ret = (rlim_t) w;
} else
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "Resource limit value '%s' is not an unsigned integer.", name);
return 0;
}
static int json_dispatch_rlimits(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
struct rlimit** limits = userdata;
JsonVariant *value;
const char *key;
int r;
assert_se(limits);
if (json_variant_is_null(variant)) {
rlimit_free_all(limits);
return 0;
}
if (!json_variant_is_object(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an object.", strna(name));
JSON_VARIANT_OBJECT_FOREACH(key, value, variant) {
JsonVariant *jcur, *jmax;
struct rlimit rl;
const char *p;
int l;
p = startswith(key, "RLIMIT_");
if (!p)
l = -1;
else
l = rlimit_from_string(p);
if (l < 0)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "Resource limit '%s' not known.", key);
if (!json_variant_is_object(value))
return json_log(value, flags, SYNTHETIC_ERRNO(EINVAL), "Resource limit '%s' has invalid value.", key);
if (json_variant_elements(value) != 4)
return json_log(value, flags, SYNTHETIC_ERRNO(EINVAL), "Resource limit '%s' value is does not have two fields as expected.", key);
jcur = json_variant_by_key(value, "cur");
if (!jcur)
return json_log(value, flags, SYNTHETIC_ERRNO(EINVAL), "Resource limit '%s' lacks 'cur' field.", key);
r = json_dispatch_rlimit_value("cur", jcur, flags, &rl.rlim_cur);
if (r < 0)
return r;
jmax = json_variant_by_key(value, "max");
if (!jmax)
return json_log(value, flags, SYNTHETIC_ERRNO(EINVAL), "Resource limit '%s' lacks 'max' field.", key);
r = json_dispatch_rlimit_value("max", jmax, flags, &rl.rlim_max);
if (r < 0)
return r;
if (limits[l])
*(limits[l]) = rl;
else {
limits[l] = newdup(struct rlimit, &rl, 1);
if (!limits[l])
return log_oom();
}
}
return 0;
}
static int json_dispatch_filename_or_path(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
assert(s);
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
if (!filename_is_valid(n) && !path_is_normalized(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid file name or normalized path.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
static int json_dispatch_path(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
if (!path_is_normalized(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a normalized file system path.", strna(name));
if (!path_is_absolute(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an absolute file system path.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
static int json_dispatch_home_directory(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
if (!valid_home(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid home directory path.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
static int json_dispatch_image_path(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
if (empty_or_root(n) || !path_is_valid(n) || !path_is_absolute(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid image path.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
static int json_dispatch_umask(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
mode_t *m = userdata;
uintmax_t k;
if (json_variant_is_null(variant)) {
*m = (mode_t) -1;
return 0;
}
if (!json_variant_is_unsigned(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a number.", strna(name));
k = json_variant_unsigned(variant);
if (k > 0777)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' outside of valid range 0…0777.", strna(name));
*m = (mode_t) k;
return 0;
}
static int json_dispatch_access_mode(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
mode_t *m = userdata;
uintmax_t k;
if (json_variant_is_null(variant)) {
*m = (mode_t) -1;
return 0;
}
if (!json_variant_is_unsigned(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a number.", strna(name));
k = json_variant_unsigned(variant);
if (k > 07777)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' outside of valid range 0…07777.", strna(name));
*m = (mode_t) k;
return 0;
}
static int json_dispatch_environment(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
_cleanup_strv_free_ char **n = NULL;
char ***l = userdata;
size_t i;
int r;
if (json_variant_is_null(variant)) {
*l = strv_free(*l);
return 0;
}
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array.", strna(name));
for (i = 0; i < json_variant_elements(variant); i++) {
_cleanup_free_ char *c = NULL;
JsonVariant *e;
const char *a;
e = json_variant_by_index(variant, i);
if (!json_variant_is_string(e))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of strings.", strna(name));
assert_se(a = json_variant_string(e));
if (!env_assignment_is_valid(a))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of environment variables.", strna(name));
c = strdup(a);
if (!c)
return json_log_oom(variant, flags);
r = strv_env_replace(&n, c);
if (r < 0)
return json_log_oom(variant, flags);
c = NULL;
}
strv_free_and_replace(*l, n);
return 0;
}
int json_dispatch_user_disposition(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
UserDisposition *disposition = userdata, k;
if (json_variant_is_null(variant)) {
*disposition = _USER_DISPOSITION_INVALID;
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
k = user_disposition_from_string(json_variant_string(variant));
if (k < 0)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "Disposition type '%s' not known.", json_variant_string(variant));
*disposition = k;
return 0;
}
static int json_dispatch_storage(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
UserStorage *storage = userdata, k;
if (json_variant_is_null(variant)) {
*storage = _USER_STORAGE_INVALID;
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
k = user_storage_from_string(json_variant_string(variant));
if (k < 0)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "Storage type '%s' not known.", json_variant_string(variant));
*storage = k;
return 0;
}
static int json_dispatch_disk_size(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
uint64_t *size = userdata;
uintmax_t k;
if (json_variant_is_null(variant)) {
*size = UINT64_MAX;
return 0;
}
if (!json_variant_is_unsigned(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an integer.", strna(name));
k = json_variant_unsigned(variant);
if (k < USER_DISK_SIZE_MIN || k > USER_DISK_SIZE_MAX)
return json_log(variant, flags, SYNTHETIC_ERRNO(ERANGE), "JSON field '%s' is not in valid range %" PRIu64 "…%" PRIu64 ".", strna(name), USER_DISK_SIZE_MIN, USER_DISK_SIZE_MAX);
*size = k;
return 0;
}
static int json_dispatch_tasks_or_memory_max(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
uint64_t *limit = userdata;
uintmax_t k;
if (json_variant_is_null(variant)) {
*limit = UINT64_MAX;
return 0;
}
if (!json_variant_is_unsigned(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a integer.", strna(name));
k = json_variant_unsigned(variant);
if (k <= 0 || k >= UINT64_MAX)
return json_log(variant, flags, SYNTHETIC_ERRNO(ERANGE), "JSON field '%s' is not in valid range %" PRIu64 "…%" PRIu64 ".", strna(name), (uint64_t) 1, UINT64_MAX-1);
*limit = k;
return 0;
}
static int json_dispatch_weight(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
uint64_t *weight = userdata;
uintmax_t k;
if (json_variant_is_null(variant)) {
*weight = UINT64_MAX;
return 0;
}
if (!json_variant_is_unsigned(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a integer.", strna(name));
k = json_variant_unsigned(variant);
if (k <= CGROUP_WEIGHT_MIN || k >= CGROUP_WEIGHT_MAX)
return json_log(variant, flags, SYNTHETIC_ERRNO(ERANGE), "JSON field '%s' is not in valid range %" PRIu64 "…%" PRIu64 ".", strna(name), (uint64_t) CGROUP_WEIGHT_MIN, (uint64_t) CGROUP_WEIGHT_MAX);
*weight = k;
return 0;
}
int json_dispatch_user_group_list(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
_cleanup_strv_free_ char **l = NULL;
char ***list = userdata;
JsonVariant *e;
int r;
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of strings.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
if (!json_variant_is_string(e))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not a string.");
if (!valid_user_group_name(json_variant_string(e), FLAGS_SET(flags, JSON_RELAX) ? VALID_USER_RELAX : 0))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not a valid user/group name: %s", json_variant_string(e));
r = strv_extend(&l, json_variant_string(e));
if (r < 0)
return json_log(e, flags, r, "Failed to append array element: %m");
}
r = strv_extend_strv(list, l, true);
if (r < 0)
return json_log(variant, flags, r, "Failed to merge user/group arrays: %m");
return 0;
}
static int dispatch_secret(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
static const JsonDispatch secret_dispatch_table[] = {
{ "password", _JSON_VARIANT_TYPE_INVALID, json_dispatch_strv, offsetof(UserRecord, password), 0 },
{ "tokenPin", _JSON_VARIANT_TYPE_INVALID, json_dispatch_strv, offsetof(UserRecord, token_pin), 0 },
{ "pkcs11Pin", /* legacy alias */ _JSON_VARIANT_TYPE_INVALID, json_dispatch_strv, offsetof(UserRecord, token_pin), 0 },
{ "pkcs11ProtectedAuthenticationPathPermitted", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, pkcs11_protected_authentication_path_permitted), 0 },
{ "fido2UserPresencePermitted", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, fido2_user_presence_permitted), 0 },
{},
};
return json_dispatch(variant, secret_dispatch_table, NULL, flags, userdata);
}
static int dispatch_pkcs11_uri(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
if (json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = json_variant_string(variant);
if (!pkcs11_uri_valid(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid RFC7512 PKCS#11 URI.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
static int dispatch_pkcs11_uri_array(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
_cleanup_strv_free_ char **z = NULL;
char ***l = userdata;
JsonVariant *e;
int r;
if (json_variant_is_null(variant)) {
*l = strv_free(*l);
return 0;
}
if (json_variant_is_string(variant)) {
const char *n;
n = json_variant_string(variant);
if (!pkcs11_uri_valid(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid RFC7512 PKCS#11 URI.", strna(name));
z = strv_new(n);
if (!z)
return log_oom();
} else {
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string or array of strings.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
const char *n;
if (!json_variant_is_string(e))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not a string.");
n = json_variant_string(e);
if (!pkcs11_uri_valid(n))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element in '%s' is not a valid RFC7512 PKCS#11 URI: %s", strna(name), n);
r = strv_extend(&z, n);
if (r < 0)
return log_oom();
}
}
strv_free_and_replace(*l, z);
return 0;
}
static int dispatch_pkcs11_key_data(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
Pkcs11EncryptedKey *k = userdata;
size_t l;
void *b;
int r;
if (json_variant_is_null(variant)) {
k->data = erase_and_free(k->data);
k->size = 0;
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
r = unbase64mem(json_variant_string(variant), (size_t) -1, &b, &l);
if (r < 0)
return json_log(variant, flags, r, "Failed to decode encrypted PKCS#11 key: %m");
erase_and_free(k->data);
k->data = b;
k->size = l;
return 0;
}
static int dispatch_pkcs11_key(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
UserRecord *h = userdata;
JsonVariant *e;
int r;
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of objects.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
Pkcs11EncryptedKey *array, *k;
static const JsonDispatch pkcs11_key_dispatch_table[] = {
{ "uri", JSON_VARIANT_STRING, dispatch_pkcs11_uri, offsetof(Pkcs11EncryptedKey, uri), JSON_MANDATORY },
{ "data", JSON_VARIANT_STRING, dispatch_pkcs11_key_data, 0, JSON_MANDATORY },
{ "hashedPassword", JSON_VARIANT_STRING, json_dispatch_string, offsetof(Pkcs11EncryptedKey, hashed_password), JSON_MANDATORY },
{},
};
if (!json_variant_is_object(e))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not an object.");
array = reallocarray(h->pkcs11_encrypted_key, h->n_pkcs11_encrypted_key + 1, sizeof(Pkcs11EncryptedKey));
if (!array)
return log_oom();
h->pkcs11_encrypted_key = array;
k = h->pkcs11_encrypted_key + h->n_pkcs11_encrypted_key;
*k = (Pkcs11EncryptedKey) {};
r = json_dispatch(e, pkcs11_key_dispatch_table, NULL, flags, k);
if (r < 0) {
pkcs11_encrypted_key_done(k);
return r;
}
h->n_pkcs11_encrypted_key++;
}
return 0;
}
static int dispatch_fido2_hmac_credential(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
Fido2HmacCredential *k = userdata;
size_t l;
void *b;
int r;
if (json_variant_is_null(variant)) {
k->id = mfree(k->id);
k->size = 0;
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
r = unbase64mem(json_variant_string(variant), (size_t) -1, &b, &l);
if (r < 0)
return json_log(variant, flags, r, "Failed to decode FIDO2 credential ID: %m");
free_and_replace(k->id, b);
k->size = l;
return 0;
}
static int dispatch_fido2_hmac_credential_array(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
UserRecord *h = userdata;
JsonVariant *e;
int r;
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of strings.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
Fido2HmacCredential *array;
size_t l;
void *b;
if (!json_variant_is_string(e))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not a string.");
array = reallocarray(h->fido2_hmac_credential, h->n_fido2_hmac_credential + 1, sizeof(Fido2HmacCredential));
if (!array)
return log_oom();
r = unbase64mem(json_variant_string(e), (size_t) -1, &b, &l);
if (r < 0)
return json_log(variant, flags, r, "Failed to decode FIDO2 credential ID: %m");
h->fido2_hmac_credential = array;
h->fido2_hmac_credential[h->n_fido2_hmac_credential++] = (Fido2HmacCredential) {
.id = b,
.size = l,
};
}
return 0;
}
static int dispatch_fido2_hmac_salt_value(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
Fido2HmacSalt *k = userdata;
size_t l;
void *b;
int r;
if (json_variant_is_null(variant)) {
k->salt = erase_and_free(k->salt);
k->salt_size = 0;
return 0;
}
if (!json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
r = unbase64mem(json_variant_string(variant), (size_t) -1, &b, &l);
if (r < 0)
return json_log(variant, flags, r, "Failed to decode FIDO2 salt: %m");
erase_and_free(k->salt);
k->salt = b;
k->salt_size = l;
return 0;
}
static int dispatch_fido2_hmac_salt(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
UserRecord *h = userdata;
JsonVariant *e;
int r;
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of objects.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
Fido2HmacSalt *array, *k;
static const JsonDispatch fido2_hmac_salt_dispatch_table[] = {
{ "credential", JSON_VARIANT_STRING, dispatch_fido2_hmac_credential, offsetof(Fido2HmacSalt, credential), JSON_MANDATORY },
{ "salt", JSON_VARIANT_STRING, dispatch_fido2_hmac_salt_value, 0, JSON_MANDATORY },
{ "hashedPassword", JSON_VARIANT_STRING, json_dispatch_string, offsetof(Fido2HmacSalt, hashed_password), JSON_MANDATORY },
{},
};
if (!json_variant_is_object(e))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not an object.");
array = reallocarray(h->fido2_hmac_salt, h->n_fido2_hmac_salt + 1, sizeof(Fido2HmacSalt));
if (!array)
return log_oom();
h->fido2_hmac_salt = array;
k = h->fido2_hmac_salt + h->n_fido2_hmac_salt;
*k = (Fido2HmacSalt) {};
r = json_dispatch(e, fido2_hmac_salt_dispatch_table, NULL, flags, k);
if (r < 0) {
fido2_hmac_salt_done(k);
return r;
}
h->n_fido2_hmac_salt++;
}
return 0;
}
static int dispatch_recovery_key(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
UserRecord *h = userdata;
JsonVariant *e;
int r;
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of objects.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
RecoveryKey *array, *k;
static const JsonDispatch recovery_key_dispatch_table[] = {
{ "type", JSON_VARIANT_STRING, json_dispatch_string, 0, JSON_MANDATORY },
{ "hashedPassword", JSON_VARIANT_STRING, json_dispatch_string, offsetof(RecoveryKey, hashed_password), JSON_MANDATORY },
{},
};
if (!json_variant_is_object(e))
return json_log(e, flags, SYNTHETIC_ERRNO(EINVAL), "JSON array element is not an object.");
array = reallocarray(h->recovery_key, h->n_recovery_key + 1, sizeof(RecoveryKey));
if (!array)
return log_oom();
h->recovery_key = array;
k = h->recovery_key + h->n_recovery_key;
*k = (RecoveryKey) {};
r = json_dispatch(e, recovery_key_dispatch_table, NULL, flags, k);
if (r < 0) {
recovery_key_done(k);
return r;
}
h->n_recovery_key++;
}
return 0;
}
static int dispatch_privileged(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
static const JsonDispatch privileged_dispatch_table[] = {
{ "passwordHint", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, password_hint), 0 },
{ "hashedPassword", _JSON_VARIANT_TYPE_INVALID, json_dispatch_strv, offsetof(UserRecord, hashed_password), JSON_SAFE },
{ "sshAuthorizedKeys", _JSON_VARIANT_TYPE_INVALID, json_dispatch_strv, offsetof(UserRecord, ssh_authorized_keys), 0 },
{ "pkcs11EncryptedKey", JSON_VARIANT_ARRAY, dispatch_pkcs11_key, 0, 0 },
{ "fido2HmacSalt", JSON_VARIANT_ARRAY, dispatch_fido2_hmac_salt, 0, 0 },
{ "recoveryKey", JSON_VARIANT_ARRAY, dispatch_recovery_key, 0, 0 },
{},
};
return json_dispatch(variant, privileged_dispatch_table, NULL, flags, userdata);
}
static int dispatch_binding(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
static const JsonDispatch binding_dispatch_table[] = {
{ "imagePath", JSON_VARIANT_STRING, json_dispatch_image_path, offsetof(UserRecord, image_path), 0 },
{ "homeDirectory", JSON_VARIANT_STRING, json_dispatch_home_directory, offsetof(UserRecord, home_directory), 0 },
{ "partitionUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, partition_uuid), 0 },
{ "luksUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, luks_uuid), 0 },
{ "fileSystemUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, file_system_uuid), 0 },
{ "uid", JSON_VARIANT_UNSIGNED, json_dispatch_uid_gid, offsetof(UserRecord, uid), 0 },
{ "gid", JSON_VARIANT_UNSIGNED, json_dispatch_uid_gid, offsetof(UserRecord, gid), 0 },
{ "storage", JSON_VARIANT_STRING, json_dispatch_storage, offsetof(UserRecord, storage), 0 },
{ "fileSystemType", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, file_system_type), JSON_SAFE },
{ "luksCipher", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_cipher), JSON_SAFE },
{ "luksCipherMode", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_cipher_mode), JSON_SAFE },
{ "luksVolumeKeySize", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_volume_key_size), 0 },
{},
};
char smid[SD_ID128_STRING_MAX];
JsonVariant *m;
sd_id128_t mid;
int r;
if (!variant)
return 0;
if (!json_variant_is_object(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an object.", strna(name));
r = sd_id128_get_machine(&mid);
if (r < 0)
return json_log(variant, flags, r, "Failed to determine machine ID: %m");
m = json_variant_by_key(variant, sd_id128_to_string(mid, smid));
if (!m)
return 0;
return json_dispatch(m, binding_dispatch_table, NULL, flags, userdata);
}
int per_machine_id_match(JsonVariant *ids, JsonDispatchFlags flags) {
sd_id128_t mid;
int r;
r = sd_id128_get_machine(&mid);
if (r < 0)
return json_log(ids, flags, r, "Failed to acquire machine ID: %m");
if (json_variant_is_string(ids)) {
sd_id128_t k;
r = sd_id128_from_string(json_variant_string(ids), &k);
if (r < 0) {
json_log(ids, flags, r, "%s is not a valid machine ID, ignoring: %m", json_variant_string(ids));
return 0;
}
return sd_id128_equal(mid, k);
}
if (json_variant_is_array(ids)) {
JsonVariant *e;
JSON_VARIANT_ARRAY_FOREACH(e, ids) {
sd_id128_t k;
if (!json_variant_is_string(e)) {
json_log(e, flags, 0, "Machine ID is not a string, ignoring: %m");
continue;
}
r = sd_id128_from_string(json_variant_string(e), &k);
if (r < 0) {
json_log(e, flags, r, "%s is not a valid machine ID, ignoring: %m", json_variant_string(e));
continue;
}
if (sd_id128_equal(mid, k))
return true;
}
return false;
}
json_log(ids, flags, 0, "Machine ID is not a string or array of strings, ignoring: %m");
return false;
}
int per_machine_hostname_match(JsonVariant *hns, JsonDispatchFlags flags) {
_cleanup_free_ char *hn = NULL;
int r;
r = gethostname_strict(&hn);
if (r == -ENXIO) {
json_log(hns, flags, r, "No hostname set, not matching perMachine hostname record: %m");
return false;
}
if (r < 0)
return json_log(hns, flags, r, "Failed to acquire hostname: %m");
if (json_variant_is_string(hns))
return streq(json_variant_string(hns), hn);
if (json_variant_is_array(hns)) {
JsonVariant *e;
JSON_VARIANT_ARRAY_FOREACH(e, hns) {
if (!json_variant_is_string(e)) {
json_log(e, flags, 0, "Hostname is not a string, ignoring: %m");
continue;
}
if (streq(json_variant_string(hns), hn))
return true;
}
return false;
}
json_log(hns, flags, 0, "Hostname is not a string or array of strings, ignoring: %m");
return false;
}
static int dispatch_per_machine(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
static const JsonDispatch per_machine_dispatch_table[] = {
{ "matchMachineId", _JSON_VARIANT_TYPE_INVALID, NULL, 0, 0 },
{ "matchHostname", _JSON_VARIANT_TYPE_INVALID, NULL, 0, 0 },
{ "iconName", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, icon_name), JSON_SAFE },
{ "location", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, location), 0 },
{ "shell", JSON_VARIANT_STRING, json_dispatch_filename_or_path, offsetof(UserRecord, shell), 0 },
{ "umask", JSON_VARIANT_UNSIGNED, json_dispatch_umask, offsetof(UserRecord, umask), 0 },
{ "environment", JSON_VARIANT_ARRAY, json_dispatch_environment, offsetof(UserRecord, environment), 0 },
{ "timeZone", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, time_zone), JSON_SAFE },
{ "preferredLanguage", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, preferred_language), JSON_SAFE },
{ "niceLevel", _JSON_VARIANT_TYPE_INVALID, json_dispatch_nice, offsetof(UserRecord, nice_level), 0 },
{ "resourceLimits", _JSON_VARIANT_TYPE_INVALID, json_dispatch_rlimits, offsetof(UserRecord, rlimits), 0 },
{ "locked", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, locked), 0 },
{ "notBeforeUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, not_before_usec), 0 },
{ "notAfterUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, not_after_usec), 0 },
{ "storage", JSON_VARIANT_STRING, json_dispatch_storage, offsetof(UserRecord, storage), 0 },
{ "diskSize", JSON_VARIANT_UNSIGNED, json_dispatch_disk_size, offsetof(UserRecord, disk_size), 0 },
{ "diskSizeRelative", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_size_relative), 0 },
{ "skeletonDirectory", JSON_VARIANT_STRING, json_dispatch_path, offsetof(UserRecord, skeleton_directory), 0 },
{ "accessMode", JSON_VARIANT_UNSIGNED, json_dispatch_access_mode, offsetof(UserRecord, access_mode), 0 },
{ "tasksMax", JSON_VARIANT_UNSIGNED, json_dispatch_tasks_or_memory_max, offsetof(UserRecord, tasks_max), 0 },
{ "memoryHigh", JSON_VARIANT_UNSIGNED, json_dispatch_tasks_or_memory_max, offsetof(UserRecord, memory_high), 0 },
{ "memoryMax", JSON_VARIANT_UNSIGNED, json_dispatch_tasks_or_memory_max, offsetof(UserRecord, memory_max), 0 },
{ "cpuWeight", JSON_VARIANT_UNSIGNED, json_dispatch_weight, offsetof(UserRecord, cpu_weight), 0 },
{ "ioWeight", JSON_VARIANT_UNSIGNED, json_dispatch_weight, offsetof(UserRecord, io_weight), 0 },
{ "mountNoDevices", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, nodev), 0 },
{ "mountNoSuid", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, nosuid), 0 },
{ "mountNoExecute", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, noexec), 0 },
{ "cifsDomain", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, cifs_domain), JSON_SAFE },
{ "cifsUserName", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, cifs_user_name), JSON_SAFE },
{ "cifsService", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, cifs_service), JSON_SAFE },
{ "imagePath", JSON_VARIANT_STRING, json_dispatch_path, offsetof(UserRecord, image_path), 0 },
{ "uid", JSON_VARIANT_UNSIGNED, json_dispatch_uid_gid, offsetof(UserRecord, uid), 0 },
{ "gid", JSON_VARIANT_UNSIGNED, json_dispatch_uid_gid, offsetof(UserRecord, gid), 0 },
{ "memberOf", JSON_VARIANT_ARRAY, json_dispatch_user_group_list, offsetof(UserRecord, member_of), JSON_RELAX},
{ "fileSystemType", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, file_system_type), JSON_SAFE },
{ "partitionUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, partition_uuid), 0 },
{ "luksUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, luks_uuid), 0 },
{ "fileSystemUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, file_system_uuid), 0 },
{ "luksDiscard", _JSON_VARIANT_TYPE_INVALID, json_dispatch_tristate, offsetof(UserRecord, luks_discard), 0, },
{ "luksOfflineDiscard", _JSON_VARIANT_TYPE_INVALID, json_dispatch_tristate, offsetof(UserRecord, luks_offline_discard), 0, },
{ "luksCipher", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_cipher), JSON_SAFE },
{ "luksCipherMode", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_cipher_mode), JSON_SAFE },
{ "luksVolumeKeySize", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_volume_key_size), 0 },
{ "luksPbkdfHashAlgorithm", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_pbkdf_hash_algorithm), JSON_SAFE },
{ "luksPbkdfType", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_pbkdf_type), JSON_SAFE },
{ "luksPbkdfTimeCostUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_pbkdf_time_cost_usec), 0 },
{ "luksPbkdfMemoryCost", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_pbkdf_memory_cost), 0 },
{ "luksPbkdfParallelThreads", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_pbkdf_parallel_threads), 0 },
{ "rateLimitIntervalUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, ratelimit_interval_usec), 0 },
{ "rateLimitBurst", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, ratelimit_burst), 0 },
{ "enforcePasswordPolicy", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, enforce_password_policy), 0 },
{ "autoLogin", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, auto_login), 0 },
{ "stopDelayUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, stop_delay_usec), 0 },
{ "killProcesses", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, kill_processes), 0 },
{ "passwordChangeMinUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_min_usec), 0 },
{ "passwordChangeMaxUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_max_usec), 0 },
{ "passwordChangeWarnUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_warn_usec), 0 },
{ "passwordChangeInactiveUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_inactive_usec), 0 },
{ "passwordChangeNow", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, password_change_now), 0 },
{ "pkcs11TokenUri", JSON_VARIANT_ARRAY, dispatch_pkcs11_uri_array, offsetof(UserRecord, pkcs11_token_uri), 0 },
{ "fido2HmacCredential", JSON_VARIANT_ARRAY, dispatch_fido2_hmac_credential_array, 0, 0 },
{},
};
JsonVariant *e;
int r;
if (!variant)
return 0;
if (!json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array.", strna(name));
JSON_VARIANT_ARRAY_FOREACH(e, variant) {
bool matching = false;
JsonVariant *m;
if (!json_variant_is_object(e))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array of objects.", strna(name));
m = json_variant_by_key(e, "matchMachineId");
if (m) {
r = per_machine_id_match(m, flags);
if (r < 0)
return r;
matching = r > 0;
}
if (!matching) {
m = json_variant_by_key(e, "matchHostname");
if (m) {
r = per_machine_hostname_match(m, flags);
if (r < 0)
return r;
matching = r > 0;
}
}
if (!matching)
continue;
r = json_dispatch(e, per_machine_dispatch_table, NULL, flags, userdata);
if (r < 0)
return r;
}
return 0;
}
static int dispatch_status(const char *name, JsonVariant *variant, JsonDispatchFlags flags, void *userdata) {
static const JsonDispatch status_dispatch_table[] = {
{ "diskUsage", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_usage), 0 },
{ "diskFree", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_free), 0 },
{ "diskSize", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_size), 0 },
{ "diskCeiling", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_ceiling), 0 },
{ "diskFloor", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_floor), 0 },
{ "state", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, state), JSON_SAFE },
{ "service", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, service), JSON_SAFE },
{ "signedLocally", _JSON_VARIANT_TYPE_INVALID, json_dispatch_tristate, offsetof(UserRecord, signed_locally), 0 },
{ "goodAuthenticationCounter", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, good_authentication_counter), 0 },
{ "badAuthenticationCounter", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, bad_authentication_counter), 0 },
{ "lastGoodAuthenticationUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, last_good_authentication_usec), 0 },
{ "lastBadAuthenticationUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, last_bad_authentication_usec), 0 },
{ "rateLimitBeginUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, ratelimit_begin_usec), 0 },
{ "rateLimitCount", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, ratelimit_count), 0 },
{ "removable", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, removable), 0 },
{},
};
char smid[SD_ID128_STRING_MAX];
JsonVariant *m;
sd_id128_t mid;
int r;
if (!variant)
return 0;
if (!json_variant_is_object(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an object.", strna(name));
r = sd_id128_get_machine(&mid);
if (r < 0)
return json_log(variant, flags, r, "Failed to determine machine ID: %m");
m = json_variant_by_key(variant, sd_id128_to_string(mid, smid));
if (!m)
return 0;
return json_dispatch(m, status_dispatch_table, NULL, flags, userdata);
}
int user_record_build_image_path(UserStorage storage, const char *user_name_and_realm, char **ret) {
const char *suffix;
char *z;
assert(storage >= 0);
assert(user_name_and_realm);
assert(ret);
if (storage == USER_LUKS)
suffix = ".home";
else if (IN_SET(storage, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT))
suffix = ".homedir";
else {
*ret = NULL;
return 0;
}
z = strjoin("/home/", user_name_and_realm, suffix);
if (!z)
return -ENOMEM;
*ret = z;
return 1;
}
static int user_record_augment(UserRecord *h, JsonDispatchFlags json_flags) {
int r;
assert(h);
if (!FLAGS_SET(h->mask, USER_RECORD_REGULAR))
return 0;
assert(h->user_name);
if (!h->user_name_and_realm_auto && h->realm) {
h->user_name_and_realm_auto = strjoin(h->user_name, "@", h->realm);
if (!h->user_name_and_realm_auto)
return json_log_oom(h->json, json_flags);
}
/* Let's add in the following automatisms only for regular users, they don't make sense for any others */
if (user_record_disposition(h) != USER_REGULAR)
return 0;
if (!h->home_directory && !h->home_directory_auto) {
h->home_directory_auto = path_join("/home/", h->user_name);
if (!h->home_directory_auto)
return json_log_oom(h->json, json_flags);
}
if (!h->image_path && !h->image_path_auto) {
r = user_record_build_image_path(user_record_storage(h), user_record_user_name_and_realm(h), &h->image_path_auto);
if (r < 0)
return json_log(h->json, json_flags, r, "Failed to determine default image path: %m");
}
return 0;
}
int user_group_record_mangle(
JsonVariant *v,
UserRecordLoadFlags load_flags,
JsonVariant **ret_variant,
UserRecordMask *ret_mask) {
static const struct {
UserRecordMask mask;
const char *name;
} mask_field[] = {
{ USER_RECORD_PRIVILEGED, "privileged" },
{ USER_RECORD_SECRET, "secret" },
{ USER_RECORD_BINDING, "binding" },
{ USER_RECORD_PER_MACHINE, "perMachine" },
{ USER_RECORD_STATUS, "status" },
{ USER_RECORD_SIGNATURE, "signature" },
};
JsonDispatchFlags json_flags = USER_RECORD_LOAD_FLAGS_TO_JSON_DISPATCH_FLAGS(load_flags);
_cleanup_(json_variant_unrefp) JsonVariant *w = NULL;
JsonVariant *array[ELEMENTSOF(mask_field) * 2];
size_t n_retain = 0, i;
UserRecordMask m = 0;
int r;
assert((load_flags & _USER_RECORD_MASK_MAX) == 0); /* detect mistakes when accidentally passing
* UserRecordMask bit masks as UserRecordLoadFlags
* value */
assert(v);
assert(ret_variant);
assert(ret_mask);
/* Note that this function is shared with the group record parser, hence we try to be generic in our
* log message wording here, to cover both cases. */
if (!json_variant_is_object(v))
return json_log(v, json_flags, SYNTHETIC_ERRNO(EBADMSG), "Record is not a JSON object, refusing.");
if (USER_RECORD_ALLOW_MASK(load_flags) == 0) /* allow nothing? */
return json_log(v, json_flags, SYNTHETIC_ERRNO(EINVAL), "Nothing allowed in record, refusing.");
if (USER_RECORD_STRIP_MASK(load_flags) == _USER_RECORD_MASK_MAX) /* strip everything? */
return json_log(v, json_flags, SYNTHETIC_ERRNO(EINVAL), "Stripping everything from record, refusing.");
/* Check if we have the special sections and if they match our flags set */
for (i = 0; i < ELEMENTSOF(mask_field); i++) {
JsonVariant *e, *k;
if (FLAGS_SET(USER_RECORD_STRIP_MASK(load_flags), mask_field[i].mask)) {
if (!w)
w = json_variant_ref(v);
r = json_variant_filter(&w, STRV_MAKE(mask_field[i].name));
if (r < 0)
return json_log(w, json_flags, r, "Failed to remove field from variant: %m");
continue;
}
e = json_variant_by_key_full(v, mask_field[i].name, &k);
if (e) {
if (!FLAGS_SET(USER_RECORD_ALLOW_MASK(load_flags), mask_field[i].mask))
return json_log(e, json_flags, SYNTHETIC_ERRNO(EBADMSG), "Record contains '%s' field, which is not allowed.", mask_field[i].name);
if (FLAGS_SET(load_flags, USER_RECORD_STRIP_REGULAR)) {
array[n_retain++] = k;
array[n_retain++] = e;
}
m |= mask_field[i].mask;
} else {
if (FLAGS_SET(USER_RECORD_REQUIRE_MASK(load_flags), mask_field[i].mask))
return json_log(v, json_flags, SYNTHETIC_ERRNO(EBADMSG), "Record lacks '%s' field, which is required.", mask_field[i].name);
}
}
if (FLAGS_SET(load_flags, USER_RECORD_STRIP_REGULAR)) {
/* If we are supposed to strip regular items, then let's instead just allocate a new object
* with just the stuff we need. */
w = json_variant_unref(w);
r = json_variant_new_object(&w, array, n_retain);
if (r < 0)
return json_log(v, json_flags, r, "Failed to allocate new object: %m");
} else {
/* And now check if there's anything else in the record */
for (i = 0; i < json_variant_elements(v); i += 2) {
const char *f;
bool special = false;
size_t j;
assert_se(f = json_variant_string(json_variant_by_index(v, i)));
for (j = 0; j < ELEMENTSOF(mask_field); j++)
if (streq(f, mask_field[j].name)) { /* already covered in the loop above */
special = true;
continue;
}
if (!special) {
if ((load_flags & (USER_RECORD_ALLOW_REGULAR|USER_RECORD_REQUIRE_REGULAR)) == 0)
return json_log(v, json_flags, SYNTHETIC_ERRNO(EBADMSG), "Record contains '%s' field, which is not allowed.", f);
m |= USER_RECORD_REGULAR;
break;
}
}
}
if (FLAGS_SET(load_flags, USER_RECORD_REQUIRE_REGULAR) && !FLAGS_SET(m, USER_RECORD_REGULAR))
return json_log(v, json_flags, SYNTHETIC_ERRNO(EBADMSG), "Record lacks basic identity fields, which are required.");
if (m == 0)
return json_log(v, json_flags, SYNTHETIC_ERRNO(EBADMSG), "Record is empty.");
if (w)
*ret_variant = TAKE_PTR(w);
else
*ret_variant = json_variant_ref(v);
*ret_mask = m;
return 0;
}
int user_record_load(UserRecord *h, JsonVariant *v, UserRecordLoadFlags load_flags) {
static const JsonDispatch user_dispatch_table[] = {
{ "userName", JSON_VARIANT_STRING, json_dispatch_user_group_name, offsetof(UserRecord, user_name), JSON_RELAX},
{ "realm", JSON_VARIANT_STRING, json_dispatch_realm, offsetof(UserRecord, realm), 0 },
{ "realName", JSON_VARIANT_STRING, json_dispatch_gecos, offsetof(UserRecord, real_name), 0 },
{ "emailAddress", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, email_address), JSON_SAFE },
{ "iconName", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, icon_name), JSON_SAFE },
{ "location", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, location), 0 },
{ "disposition", JSON_VARIANT_STRING, json_dispatch_user_disposition, offsetof(UserRecord, disposition), 0 },
{ "lastChangeUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, last_change_usec), 0 },
{ "lastPasswordChangeUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, last_password_change_usec), 0 },
{ "shell", JSON_VARIANT_STRING, json_dispatch_filename_or_path, offsetof(UserRecord, shell), 0 },
{ "umask", JSON_VARIANT_UNSIGNED, json_dispatch_umask, offsetof(UserRecord, umask), 0 },
{ "environment", JSON_VARIANT_ARRAY, json_dispatch_environment, offsetof(UserRecord, environment), 0 },
{ "timeZone", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, time_zone), JSON_SAFE },
{ "preferredLanguage", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, preferred_language), JSON_SAFE },
{ "niceLevel", _JSON_VARIANT_TYPE_INVALID, json_dispatch_nice, offsetof(UserRecord, nice_level), 0 },
{ "resourceLimits", _JSON_VARIANT_TYPE_INVALID, json_dispatch_rlimits, offsetof(UserRecord, rlimits), 0 },
{ "locked", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, locked), 0 },
{ "notBeforeUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, not_before_usec), 0 },
{ "notAfterUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, not_after_usec), 0 },
{ "storage", JSON_VARIANT_STRING, json_dispatch_storage, offsetof(UserRecord, storage), 0 },
{ "diskSize", JSON_VARIANT_UNSIGNED, json_dispatch_disk_size, offsetof(UserRecord, disk_size), 0 },
{ "diskSizeRelative", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, disk_size_relative), 0 },
{ "skeletonDirectory", JSON_VARIANT_STRING, json_dispatch_path, offsetof(UserRecord, skeleton_directory), 0 },
{ "accessMode", JSON_VARIANT_UNSIGNED, json_dispatch_access_mode, offsetof(UserRecord, access_mode), 0 },
{ "tasksMax", JSON_VARIANT_UNSIGNED, json_dispatch_tasks_or_memory_max, offsetof(UserRecord, tasks_max), 0 },
{ "memoryHigh", JSON_VARIANT_UNSIGNED, json_dispatch_tasks_or_memory_max, offsetof(UserRecord, memory_high), 0 },
{ "memoryMax", JSON_VARIANT_UNSIGNED, json_dispatch_tasks_or_memory_max, offsetof(UserRecord, memory_max), 0 },
{ "cpuWeight", JSON_VARIANT_UNSIGNED, json_dispatch_weight, offsetof(UserRecord, cpu_weight), 0 },
{ "ioWeight", JSON_VARIANT_UNSIGNED, json_dispatch_weight, offsetof(UserRecord, io_weight), 0 },
{ "mountNoDevices", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, nodev), 0 },
{ "mountNoSuid", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, nosuid), 0 },
{ "mountNoExecute", JSON_VARIANT_BOOLEAN, json_dispatch_boolean, offsetof(UserRecord, noexec), 0 },
{ "cifsDomain", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, cifs_domain), JSON_SAFE },
{ "cifsUserName", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, cifs_user_name), JSON_SAFE },
{ "cifsService", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, cifs_service), JSON_SAFE },
{ "imagePath", JSON_VARIANT_STRING, json_dispatch_path, offsetof(UserRecord, image_path), 0 },
{ "homeDirectory", JSON_VARIANT_STRING, json_dispatch_home_directory, offsetof(UserRecord, home_directory), 0 },
{ "uid", JSON_VARIANT_UNSIGNED, json_dispatch_uid_gid, offsetof(UserRecord, uid), 0 },
{ "gid", JSON_VARIANT_UNSIGNED, json_dispatch_uid_gid, offsetof(UserRecord, gid), 0 },
{ "memberOf", JSON_VARIANT_ARRAY, json_dispatch_user_group_list, offsetof(UserRecord, member_of), JSON_RELAX},
{ "fileSystemType", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, file_system_type), JSON_SAFE },
{ "partitionUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, partition_uuid), 0 },
{ "luksUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, luks_uuid), 0 },
{ "fileSystemUuid", JSON_VARIANT_STRING, json_dispatch_id128, offsetof(UserRecord, file_system_uuid), 0 },
{ "luksDiscard", _JSON_VARIANT_TYPE_INVALID, json_dispatch_tristate, offsetof(UserRecord, luks_discard), 0 },
{ "luksOfflineDiscard", _JSON_VARIANT_TYPE_INVALID, json_dispatch_tristate, offsetof(UserRecord, luks_offline_discard), 0 },
{ "luksCipher", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_cipher), JSON_SAFE },
{ "luksCipherMode", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_cipher_mode), JSON_SAFE },
{ "luksVolumeKeySize", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_volume_key_size), 0 },
{ "luksPbkdfHashAlgorithm", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_pbkdf_hash_algorithm), JSON_SAFE },
{ "luksPbkdfType", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, luks_pbkdf_type), JSON_SAFE },
{ "luksPbkdfTimeCostUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_pbkdf_time_cost_usec), 0 },
{ "luksPbkdfMemoryCost", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_pbkdf_memory_cost), 0 },
{ "luksPbkdfParallelThreads", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, luks_pbkdf_parallel_threads), 0 },
{ "service", JSON_VARIANT_STRING, json_dispatch_string, offsetof(UserRecord, service), JSON_SAFE },
{ "rateLimitIntervalUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, ratelimit_interval_usec), 0 },
{ "rateLimitBurst", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, ratelimit_burst), 0 },
{ "enforcePasswordPolicy", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, enforce_password_policy), 0 },
{ "autoLogin", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, auto_login), 0 },
{ "stopDelayUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, stop_delay_usec), 0 },
{ "killProcesses", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, kill_processes), 0 },
{ "passwordChangeMinUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_min_usec), 0 },
{ "passwordChangeMaxUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_max_usec), 0 },
{ "passwordChangeWarnUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_warn_usec), 0 },
{ "passwordChangeInactiveUSec", JSON_VARIANT_UNSIGNED, json_dispatch_uint64, offsetof(UserRecord, password_change_inactive_usec), 0 },
{ "passwordChangeNow", JSON_VARIANT_BOOLEAN, json_dispatch_tristate, offsetof(UserRecord, password_change_now), 0 },
{ "pkcs11TokenUri", JSON_VARIANT_ARRAY, dispatch_pkcs11_uri_array, offsetof(UserRecord, pkcs11_token_uri), 0 },
{ "fido2HmacCredential", JSON_VARIANT_ARRAY, dispatch_fido2_hmac_credential_array, 0, 0 },
{ "recoveryKeyType", JSON_VARIANT_ARRAY, json_dispatch_strv, offsetof(UserRecord, recovery_key_type), 0 },
{ "secret", JSON_VARIANT_OBJECT, dispatch_secret, 0, 0 },
{ "privileged", JSON_VARIANT_OBJECT, dispatch_privileged, 0, 0 },
/* Ignore the perMachine, binding, status stuff here, and process it later, so that it overrides whatever is set above */
{ "perMachine", JSON_VARIANT_ARRAY, NULL, 0, 0 },
{ "binding", JSON_VARIANT_OBJECT, NULL, 0, 0 },
{ "status", JSON_VARIANT_OBJECT, NULL, 0, 0 },
/* Ignore 'signature', we check it with explicit accessors instead */
{ "signature", JSON_VARIANT_ARRAY, NULL, 0, 0 },
{},
};
JsonDispatchFlags json_flags = USER_RECORD_LOAD_FLAGS_TO_JSON_DISPATCH_FLAGS(load_flags);
int r;
assert(h);
assert(!h->json);
/* Note that this call will leave a half-initialized record around on failure! */
r = user_group_record_mangle(v, load_flags, &h->json, &h->mask);
if (r < 0)
return r;
r = json_dispatch(h->json, user_dispatch_table, NULL, json_flags, h);
if (r < 0)
return r;
/* During the parsing operation above we ignored the 'perMachine', 'binding' and 'status' fields,
* since we want them to override the global options. Let's process them now. */
r = dispatch_per_machine("perMachine", json_variant_by_key(h->json, "perMachine"), json_flags, h);
if (r < 0)
return r;
r = dispatch_binding("binding", json_variant_by_key(h->json, "binding"), json_flags, h);
if (r < 0)
return r;
r = dispatch_status("status", json_variant_by_key(h->json, "status"), json_flags, h);
if (r < 0)
return r;
if (FLAGS_SET(h->mask, USER_RECORD_REGULAR) && !h->user_name)
return json_log(h->json, json_flags, SYNTHETIC_ERRNO(EINVAL), "User name field missing, refusing.");
r = user_record_augment(h, json_flags);
if (r < 0)
return r;
return 0;
}
int user_record_build(UserRecord **ret, ...) {
_cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
_cleanup_(user_record_unrefp) UserRecord *u = NULL;
va_list ap;
int r;
assert(ret);
va_start(ap, ret);
r = json_buildv(&v, ap);
va_end(ap);
if (r < 0)
return r;
u = user_record_new();
if (!u)
return -ENOMEM;
r = user_record_load(u, v, USER_RECORD_LOAD_FULL);
if (r < 0)
return r;
*ret = TAKE_PTR(u);
return 0;
}
const char *user_record_user_name_and_realm(UserRecord *h) {
assert(h);
/* Return the pre-initialized joined string if it is defined */
if (h->user_name_and_realm_auto)
return h->user_name_and_realm_auto;
/* If it's not defined then we cannot have a realm */
assert(!h->realm);
return h->user_name;
}
UserStorage user_record_storage(UserRecord *h) {
assert(h);
if (h->storage >= 0)
return h->storage;
return USER_CLASSIC;
}
const char *user_record_file_system_type(UserRecord *h) {
assert(h);
return h->file_system_type ?: "btrfs";
}
const char *user_record_skeleton_directory(UserRecord *h) {
assert(h);
return h->skeleton_directory ?: "/etc/skel";
}
mode_t user_record_access_mode(UserRecord *h) {
assert(h);
return h->access_mode != (mode_t) -1 ? h->access_mode : 0700;
}
const char* user_record_home_directory(UserRecord *h) {
assert(h);
if (h->home_directory)
return h->home_directory;
if (h->home_directory_auto)
return h->home_directory_auto;
/* The root user is special, hence be special about it */
if (streq_ptr(h->user_name, "root"))
return "/root";
return "/";
}
const char *user_record_image_path(UserRecord *h) {
assert(h);
if (h->image_path)
return h->image_path;
if (h->image_path_auto)
return h->image_path_auto;
return IN_SET(user_record_storage(h), USER_CLASSIC, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT) ? user_record_home_directory(h) : NULL;
}
const char *user_record_cifs_user_name(UserRecord *h) {
assert(h);
return h->cifs_user_name ?: h->user_name;
}
unsigned long user_record_mount_flags(UserRecord *h) {
assert(h);
return (h->nosuid ? MS_NOSUID : 0) |
(h->noexec ? MS_NOEXEC : 0) |
(h->nodev ? MS_NODEV : 0);
}
const char *user_record_shell(UserRecord *h) {
assert(h);
if (h->shell)
return h->shell;
if (streq_ptr(h->user_name, "root"))
return "/bin/sh";
if (user_record_disposition(h) == USER_REGULAR)
return "/bin/bash";
return NOLOGIN;
}
const char *user_record_real_name(UserRecord *h) {
assert(h);
return h->real_name ?: h->user_name;
}
bool user_record_luks_discard(UserRecord *h) {
const char *ip;
assert(h);
if (h->luks_discard >= 0)
return h->luks_discard;
ip = user_record_image_path(h);
if (!ip)
return false;
/* Use discard by default if we are referring to a real block device, but not when operating on a
* loopback device. We want to optimize for SSD and flash storage after all, but we should be careful
* when storing stuff on top of regular file systems in loopback files as doing discard then would
* mean thin provisioning and we should not do that willy-nilly since it means we'll risk EIO later
* on should the disk space to back our file systems not be available. */
return path_startswith(ip, "/dev/");
}
bool user_record_luks_offline_discard(UserRecord *h) {
const char *ip;
assert(h);
if (h->luks_offline_discard >= 0)
return h->luks_offline_discard;
/* Discard while we are logged out should generally be a good idea, except when operating directly on
* physical media, where we should just bind it to the online discard mode. */
ip = user_record_image_path(h);
if (!ip)
return false;
if (path_startswith(ip, "/dev/"))
return user_record_luks_discard(h);
return true;
}
const char *user_record_luks_cipher(UserRecord *h) {
assert(h);
return h->luks_cipher ?: "aes";
}
const char *user_record_luks_cipher_mode(UserRecord *h) {
assert(h);
return h->luks_cipher_mode ?: "xts-plain64";
}
uint64_t user_record_luks_volume_key_size(UserRecord *h) {
assert(h);
/* We return a value here that can be cast without loss into size_t which is what libcrypsetup expects */
if (h->luks_volume_key_size == UINT64_MAX)
return 256 / 8;
return MIN(h->luks_volume_key_size, SIZE_MAX);
}
const char* user_record_luks_pbkdf_type(UserRecord *h) {
assert(h);
return h->luks_pbkdf_type ?: "argon2i";
}
uint64_t user_record_luks_pbkdf_time_cost_usec(UserRecord *h) {
assert(h);
/* Returns a value with ms granularity, since that's what libcryptsetup expects */
if (h->luks_pbkdf_time_cost_usec == UINT64_MAX)
return 500 * USEC_PER_MSEC; /* We default to 500ms, in contrast to libcryptsetup's 2s, which is just awfully slow on every login */
return MIN(DIV_ROUND_UP(h->luks_pbkdf_time_cost_usec, USEC_PER_MSEC), UINT32_MAX) * USEC_PER_MSEC;
}
uint64_t user_record_luks_pbkdf_memory_cost(UserRecord *h) {
assert(h);
/* Returns a value with kb granularity, since that's what libcryptsetup expects */
if (h->luks_pbkdf_memory_cost == UINT64_MAX)
return 64*1024*1024; /* We default to 64M, since this should work on smaller systems too */
return MIN(DIV_ROUND_UP(h->luks_pbkdf_memory_cost, 1024), UINT32_MAX) * 1024;
}
uint64_t user_record_luks_pbkdf_parallel_threads(UserRecord *h) {
assert(h);
if (h->luks_pbkdf_memory_cost == UINT64_MAX)
return 1; /* We default to 1, since this should work on smaller systems too */
return MIN(h->luks_pbkdf_parallel_threads, UINT32_MAX);
}
const char *user_record_luks_pbkdf_hash_algorithm(UserRecord *h) {
assert(h);
return h->luks_pbkdf_hash_algorithm ?: "sha512";
}
gid_t user_record_gid(UserRecord *h) {
assert(h);
if (gid_is_valid(h->gid))
return h->gid;
return (gid_t) h->uid;
}
UserDisposition user_record_disposition(UserRecord *h) {
assert(h);
if (h->disposition >= 0)
return h->disposition;
/* If not declared, derive from UID */
if (!uid_is_valid(h->uid))
return _USER_DISPOSITION_INVALID;
if (h->uid == 0 || h->uid == UID_NOBODY)
return USER_INTRINSIC;
if (uid_is_system(h->uid))
return USER_SYSTEM;
if (uid_is_dynamic(h->uid))
return USER_DYNAMIC;
if (uid_is_container(h->uid))
return USER_CONTAINER;
if (h->uid > INT32_MAX)
return USER_RESERVED;
return USER_REGULAR;
}
int user_record_removable(UserRecord *h) {
UserStorage storage;
assert(h);
if (h->removable >= 0)
return h->removable;
/* Refuse to decide for classic records */
storage = user_record_storage(h);
if (h->storage < 0 || h->storage == USER_CLASSIC)
return -1;
/* For now consider only LUKS home directories with a reference by path as removable */
return storage == USER_LUKS && path_startswith(user_record_image_path(h), "/dev/");
}
uint64_t user_record_ratelimit_interval_usec(UserRecord *h) {
assert(h);
if (h->ratelimit_interval_usec == UINT64_MAX)
return DEFAULT_RATELIMIT_INTERVAL_USEC;
return h->ratelimit_interval_usec;
}
uint64_t user_record_ratelimit_burst(UserRecord *h) {
assert(h);
if (h->ratelimit_burst == UINT64_MAX)
return DEFAULT_RATELIMIT_BURST;
return h->ratelimit_burst;
}
bool user_record_can_authenticate(UserRecord *h) {
assert(h);
/* Returns true if there's some form of property configured that the user can authenticate against */
if (h->n_pkcs11_encrypted_key > 0)
return true;
if (h->n_fido2_hmac_salt > 0)
return true;
return !strv_isempty(h->hashed_password);
}
uint64_t user_record_ratelimit_next_try(UserRecord *h) {
assert(h);
/* Calculates when the it's possible to login next. Returns:
*
* UINT64_MAX → Nothing known
* 0 → Right away
* Any other → Next time in CLOCK_REALTIME in usec (which could be in the past)
*/
if (h->ratelimit_begin_usec == UINT64_MAX ||
h->ratelimit_count == UINT64_MAX)
return UINT64_MAX;
if (h->ratelimit_begin_usec > now(CLOCK_REALTIME)) /* If the ratelimit time is in the future, then
* the local clock is probably incorrect. Let's
* not refuse login then. */
return UINT64_MAX;
if (h->ratelimit_count < user_record_ratelimit_burst(h))
return 0;
return usec_add(h->ratelimit_begin_usec, user_record_ratelimit_interval_usec(h));
}
bool user_record_equal(UserRecord *a, UserRecord *b) {
assert(a);
assert(b);
/* We assume that when a record is modified its JSON data is updated at the same time, hence it's
* sufficient to compare the JSON data. */
return json_variant_equal(a->json, b->json);
}
bool user_record_compatible(UserRecord *a, UserRecord *b) {
assert(a);
assert(b);
/* If either lacks the regular section, we can't really decide, let's hence say they are
* incompatible. */
if (!(a->mask & b->mask & USER_RECORD_REGULAR))
return false;
return streq_ptr(a->user_name, b->user_name) &&
streq_ptr(a->realm, b->realm);
}
int user_record_compare_last_change(UserRecord *a, UserRecord *b) {
assert(a);
assert(b);
if (a->last_change_usec == b->last_change_usec)
return 0;
/* Always consider a record with a timestamp newer than one without */
if (a->last_change_usec == UINT64_MAX)
return -1;
if (b->last_change_usec == UINT64_MAX)
return 1;
return CMP(a->last_change_usec, b->last_change_usec);
}
int user_record_clone(UserRecord *h, UserRecordLoadFlags flags, UserRecord **ret) {
_cleanup_(user_record_unrefp) UserRecord *c = NULL;
int r;
assert(h);
assert(ret);
c = user_record_new();
if (!c)
return -ENOMEM;
r = user_record_load(c, h->json, flags);
if (r < 0)
return r;
*ret = TAKE_PTR(c);
return 0;
}
int user_record_masked_equal(UserRecord *a, UserRecord *b, UserRecordMask mask) {
_cleanup_(user_record_unrefp) UserRecord *x = NULL, *y = NULL;
int r;
assert(a);
assert(b);
/* Compares the two records, but ignores anything not listed in the specified mask */
if ((a->mask & ~mask) != 0) {
r = user_record_clone(a, USER_RECORD_ALLOW(mask) | USER_RECORD_STRIP(~mask & _USER_RECORD_MASK_MAX), &x);
if (r < 0)
return r;
a = x;
}
if ((b->mask & ~mask) != 0) {
r = user_record_clone(b, USER_RECORD_ALLOW(mask) | USER_RECORD_STRIP(~mask & _USER_RECORD_MASK_MAX), &y);
if (r < 0)
return r;
b = y;
}
return user_record_equal(a, b);
}
int user_record_test_blocked(UserRecord *h) {
usec_t n;
/* Checks whether access to the specified user shall be allowed at the moment. Returns:
*
* -ESTALE: Record is from the future
* -ENOLCK: Record is blocked
* -EL2HLT: Record is not valid yet
* -EL3HLT: Record is not valid anymore
*
*/
assert(h);
if (h->locked > 0)
return -ENOLCK;
n = now(CLOCK_REALTIME);
if (h->not_before_usec != UINT64_MAX && n < h->not_before_usec)
return -EL2HLT;
if (h->not_after_usec != UINT64_MAX && n > h->not_after_usec)
return -EL3HLT;
if (h->last_change_usec != UINT64_MAX &&
h->last_change_usec > n) /* Complain during log-ins when the record is from the future */
return -ESTALE;
return 0;
}
int user_record_test_password_change_required(UserRecord *h) {
bool change_permitted;
usec_t n;
assert(h);
/* Checks whether the user must change the password when logging in
-EKEYREVOKED: Change password now because admin said so
-EOWNERDEAD: Change password now because it expired
-EKEYREJECTED: Password is expired, no changing is allowed
-EKEYEXPIRED: Password is about to expire, warn user
-ENETDOWN: Record has expiration info but no password change timestamp
-EROFS: No password change required nor permitted
-ESTALE: RTC likely incorrect, last password change is in the future
0: No password change required, but permitted
*/
/* If a password change request has been set explicitly, it overrides everything */
if (h->password_change_now > 0)
return -EKEYREVOKED;
n = now(CLOCK_REALTIME);
/* Password change in the future? Then our RTC is likely incorrect */
if (h->last_password_change_usec != UINT64_MAX &&
h->last_password_change_usec > n &&
(h->password_change_min_usec != UINT64_MAX ||
h->password_change_max_usec != UINT64_MAX ||
h->password_change_inactive_usec != UINT64_MAX))
return -ESTALE;
/* Then, let's check if password changing is currently allowed at all */
if (h->password_change_min_usec != UINT64_MAX) {
/* Expiry configured but no password change timestamp known? */
if (h->last_password_change_usec == UINT64_MAX)
return -ENETDOWN;
if (h->password_change_min_usec >= UINT64_MAX - h->last_password_change_usec)
change_permitted = false;
else
change_permitted = n >= h->last_password_change_usec + h->password_change_min_usec;
} else
change_permitted = true;
/* Let's check whether the password has expired. */
if (!(h->password_change_max_usec == UINT64_MAX ||
h->password_change_max_usec >= UINT64_MAX - h->last_password_change_usec)) {
uint64_t change_before;
/* Expiry configured but no password change timestamp known? */
if (h->last_password_change_usec == UINT64_MAX)
return -ENETDOWN;
/* Password is in inactive phase? */
if (h->password_change_inactive_usec != UINT64_MAX &&
h->password_change_inactive_usec < UINT64_MAX - h->password_change_max_usec) {
usec_t added;
added = h->password_change_inactive_usec + h->password_change_max_usec;
if (added < UINT64_MAX - h->last_password_change_usec &&
n >= h->last_password_change_usec + added)
return -EKEYREJECTED;
}
/* Password needs to be changed now? */
change_before = h->last_password_change_usec + h->password_change_max_usec;
if (n >= change_before)
return change_permitted ? -EOWNERDEAD : -EKEYREJECTED;
/* Warn user? */
if (h->password_change_warn_usec != UINT64_MAX &&
(change_before < h->password_change_warn_usec ||
n >= change_before - h->password_change_warn_usec))
return change_permitted ? -EKEYEXPIRED : -EROFS;
}
/* No password changing necessary */
return change_permitted ? 0 : -EROFS;
}
static const char* const user_storage_table[_USER_STORAGE_MAX] = {
[USER_CLASSIC] = "classic",
[USER_LUKS] = "luks",
[USER_DIRECTORY] = "directory",
[USER_SUBVOLUME] = "subvolume",
[USER_FSCRYPT] = "fscrypt",
[USER_CIFS] = "cifs",
};
DEFINE_STRING_TABLE_LOOKUP(user_storage, UserStorage);
static const char* const user_disposition_table[_USER_DISPOSITION_MAX] = {
[USER_INTRINSIC] = "intrinsic",
[USER_SYSTEM] = "system",
[USER_DYNAMIC] = "dynamic",
[USER_REGULAR] = "regular",
[USER_CONTAINER] = "container",
[USER_RESERVED] = "reserved",
};
DEFINE_STRING_TABLE_LOOKUP(user_disposition, UserDisposition);