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-rw-r--r--include/linux/audit.h697
1 files changed, 697 insertions, 0 deletions
diff --git a/include/linux/audit.h b/include/linux/audit.h
new file mode 100644
index 000000000..b3d859831
--- /dev/null
+++ b/include/linux/audit.h
@@ -0,0 +1,697 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* audit.h -- Auditing support
+ *
+ * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
+ * All Rights Reserved.
+ *
+ * Written by Rickard E. (Rik) Faith <faith@redhat.com>
+ */
+#ifndef _LINUX_AUDIT_H_
+#define _LINUX_AUDIT_H_
+
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <uapi/linux/audit.h>
+#include <uapi/linux/netfilter/nf_tables.h>
+
+#define AUDIT_INO_UNSET ((unsigned long)-1)
+#define AUDIT_DEV_UNSET ((dev_t)-1)
+
+struct audit_sig_info {
+ uid_t uid;
+ pid_t pid;
+ char ctx[];
+};
+
+struct audit_buffer;
+struct audit_context;
+struct inode;
+struct netlink_skb_parms;
+struct path;
+struct linux_binprm;
+struct mq_attr;
+struct mqstat;
+struct audit_watch;
+struct audit_tree;
+struct sk_buff;
+
+struct audit_krule {
+ u32 pflags;
+ u32 flags;
+ u32 listnr;
+ u32 action;
+ u32 mask[AUDIT_BITMASK_SIZE];
+ u32 buflen; /* for data alloc on list rules */
+ u32 field_count;
+ char *filterkey; /* ties events to rules */
+ struct audit_field *fields;
+ struct audit_field *arch_f; /* quick access to arch field */
+ struct audit_field *inode_f; /* quick access to an inode field */
+ struct audit_watch *watch; /* associated watch */
+ struct audit_tree *tree; /* associated watched tree */
+ struct audit_fsnotify_mark *exe;
+ struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
+ struct list_head list; /* for AUDIT_LIST* purposes only */
+ u64 prio;
+};
+
+/* Flag to indicate legacy AUDIT_LOGINUID unset usage */
+#define AUDIT_LOGINUID_LEGACY 0x1
+
+struct audit_field {
+ u32 type;
+ union {
+ u32 val;
+ kuid_t uid;
+ kgid_t gid;
+ struct {
+ char *lsm_str;
+ void *lsm_rule;
+ };
+ };
+ u32 op;
+};
+
+enum audit_ntp_type {
+ AUDIT_NTP_OFFSET,
+ AUDIT_NTP_FREQ,
+ AUDIT_NTP_STATUS,
+ AUDIT_NTP_TAI,
+ AUDIT_NTP_TICK,
+ AUDIT_NTP_ADJUST,
+
+ AUDIT_NTP_NVALS /* count */
+};
+
+#ifdef CONFIG_AUDITSYSCALL
+struct audit_ntp_val {
+ long long oldval, newval;
+};
+
+struct audit_ntp_data {
+ struct audit_ntp_val vals[AUDIT_NTP_NVALS];
+};
+#else
+struct audit_ntp_data {};
+#endif
+
+enum audit_nfcfgop {
+ AUDIT_XT_OP_REGISTER,
+ AUDIT_XT_OP_REPLACE,
+ AUDIT_XT_OP_UNREGISTER,
+ AUDIT_NFT_OP_TABLE_REGISTER,
+ AUDIT_NFT_OP_TABLE_UNREGISTER,
+ AUDIT_NFT_OP_CHAIN_REGISTER,
+ AUDIT_NFT_OP_CHAIN_UNREGISTER,
+ AUDIT_NFT_OP_RULE_REGISTER,
+ AUDIT_NFT_OP_RULE_UNREGISTER,
+ AUDIT_NFT_OP_SET_REGISTER,
+ AUDIT_NFT_OP_SET_UNREGISTER,
+ AUDIT_NFT_OP_SETELEM_REGISTER,
+ AUDIT_NFT_OP_SETELEM_UNREGISTER,
+ AUDIT_NFT_OP_GEN_REGISTER,
+ AUDIT_NFT_OP_OBJ_REGISTER,
+ AUDIT_NFT_OP_OBJ_UNREGISTER,
+ AUDIT_NFT_OP_OBJ_RESET,
+ AUDIT_NFT_OP_FLOWTABLE_REGISTER,
+ AUDIT_NFT_OP_FLOWTABLE_UNREGISTER,
+ AUDIT_NFT_OP_INVALID,
+};
+
+extern int is_audit_feature_set(int which);
+
+extern int __init audit_register_class(int class, unsigned *list);
+extern int audit_classify_syscall(int abi, unsigned syscall);
+extern int audit_classify_arch(int arch);
+/* only for compat system calls */
+extern unsigned compat_write_class[];
+extern unsigned compat_read_class[];
+extern unsigned compat_dir_class[];
+extern unsigned compat_chattr_class[];
+extern unsigned compat_signal_class[];
+
+extern int audit_classify_compat_syscall(int abi, unsigned syscall);
+
+/* audit_names->type values */
+#define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
+#define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
+#define AUDIT_TYPE_PARENT 2 /* a parent audit record */
+#define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
+#define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
+
+/* maximized args number that audit_socketcall can process */
+#define AUDITSC_ARGS 6
+
+/* bit values for ->signal->audit_tty */
+#define AUDIT_TTY_ENABLE BIT(0)
+#define AUDIT_TTY_LOG_PASSWD BIT(1)
+
+struct filename;
+
+#define AUDIT_OFF 0
+#define AUDIT_ON 1
+#define AUDIT_LOCKED 2
+#ifdef CONFIG_AUDIT
+/* These are defined in audit.c */
+ /* Public API */
+extern __printf(4, 5)
+void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
+ const char *fmt, ...);
+
+extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
+extern __printf(2, 3)
+void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
+extern void audit_log_end(struct audit_buffer *ab);
+extern bool audit_string_contains_control(const char *string,
+ size_t len);
+extern void audit_log_n_hex(struct audit_buffer *ab,
+ const unsigned char *buf,
+ size_t len);
+extern void audit_log_n_string(struct audit_buffer *ab,
+ const char *buf,
+ size_t n);
+extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
+ const char *string,
+ size_t n);
+extern void audit_log_untrustedstring(struct audit_buffer *ab,
+ const char *string);
+extern void audit_log_d_path(struct audit_buffer *ab,
+ const char *prefix,
+ const struct path *path);
+extern void audit_log_key(struct audit_buffer *ab,
+ char *key);
+extern void audit_log_path_denied(int type,
+ const char *operation);
+extern void audit_log_lost(const char *message);
+
+extern int audit_log_task_context(struct audit_buffer *ab);
+extern void audit_log_task_info(struct audit_buffer *ab);
+
+extern int audit_update_lsm_rules(void);
+
+ /* Private API (for audit.c only) */
+extern int audit_rule_change(int type, int seq, void *data, size_t datasz);
+extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
+
+extern int audit_set_loginuid(kuid_t loginuid);
+
+static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
+{
+ return tsk->loginuid;
+}
+
+static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
+{
+ return tsk->sessionid;
+}
+
+extern u32 audit_enabled;
+
+extern int audit_signal_info(int sig, struct task_struct *t);
+
+#else /* CONFIG_AUDIT */
+static inline __printf(4, 5)
+void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
+ const char *fmt, ...)
+{ }
+static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
+ gfp_t gfp_mask, int type)
+{
+ return NULL;
+}
+static inline __printf(2, 3)
+void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
+{ }
+static inline void audit_log_end(struct audit_buffer *ab)
+{ }
+static inline void audit_log_n_hex(struct audit_buffer *ab,
+ const unsigned char *buf, size_t len)
+{ }
+static inline void audit_log_n_string(struct audit_buffer *ab,
+ const char *buf, size_t n)
+{ }
+static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
+ const char *string, size_t n)
+{ }
+static inline void audit_log_untrustedstring(struct audit_buffer *ab,
+ const char *string)
+{ }
+static inline void audit_log_d_path(struct audit_buffer *ab,
+ const char *prefix,
+ const struct path *path)
+{ }
+static inline void audit_log_key(struct audit_buffer *ab, char *key)
+{ }
+static inline void audit_log_path_denied(int type, const char *operation)
+{ }
+static inline int audit_log_task_context(struct audit_buffer *ab)
+{
+ return 0;
+}
+static inline void audit_log_task_info(struct audit_buffer *ab)
+{ }
+
+static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
+{
+ return INVALID_UID;
+}
+
+static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
+{
+ return AUDIT_SID_UNSET;
+}
+
+#define audit_enabled AUDIT_OFF
+
+static inline int audit_signal_info(int sig, struct task_struct *t)
+{
+ return 0;
+}
+
+#endif /* CONFIG_AUDIT */
+
+#ifdef CONFIG_AUDIT_COMPAT_GENERIC
+#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
+#else
+#define audit_is_compat(arch) false
+#endif
+
+#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
+#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
+#define AUDIT_INODE_NOEVAL 4 /* audit record incomplete */
+
+#ifdef CONFIG_AUDITSYSCALL
+#include <asm/syscall.h> /* for syscall_get_arch() */
+
+/* These are defined in auditsc.c */
+ /* Public API */
+extern int audit_alloc(struct task_struct *task);
+extern void __audit_free(struct task_struct *task);
+extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
+ unsigned long a2, unsigned long a3);
+extern void __audit_syscall_exit(int ret_success, long ret_value);
+extern struct filename *__audit_reusename(const __user char *uptr);
+extern void __audit_getname(struct filename *name);
+extern void __audit_getcwd(void);
+extern void __audit_inode(struct filename *name, const struct dentry *dentry,
+ unsigned int flags);
+extern void __audit_file(const struct file *);
+extern void __audit_inode_child(struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type);
+extern void audit_seccomp(unsigned long syscall, long signr, int code);
+extern void audit_seccomp_actions_logged(const char *names,
+ const char *old_names, int res);
+extern void __audit_ptrace(struct task_struct *t);
+
+static inline void audit_set_context(struct task_struct *task, struct audit_context *ctx)
+{
+ task->audit_context = ctx;
+}
+
+static inline struct audit_context *audit_context(void)
+{
+ return current->audit_context;
+}
+
+static inline bool audit_dummy_context(void)
+{
+ void *p = audit_context();
+ return !p || *(int *)p;
+}
+static inline void audit_free(struct task_struct *task)
+{
+ if (unlikely(task->audit_context))
+ __audit_free(task);
+}
+static inline void audit_syscall_entry(int major, unsigned long a0,
+ unsigned long a1, unsigned long a2,
+ unsigned long a3)
+{
+ if (unlikely(audit_context()))
+ __audit_syscall_entry(major, a0, a1, a2, a3);
+}
+static inline void audit_syscall_exit(void *pt_regs)
+{
+ if (unlikely(audit_context())) {
+ int success = is_syscall_success(pt_regs);
+ long return_code = regs_return_value(pt_regs);
+
+ __audit_syscall_exit(success, return_code);
+ }
+}
+static inline struct filename *audit_reusename(const __user char *name)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_reusename(name);
+ return NULL;
+}
+static inline void audit_getname(struct filename *name)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_getname(name);
+}
+static inline void audit_getcwd(void)
+{
+ if (unlikely(audit_context()))
+ __audit_getcwd();
+}
+static inline void audit_inode(struct filename *name,
+ const struct dentry *dentry,
+ unsigned int aflags) {
+ if (unlikely(!audit_dummy_context()))
+ __audit_inode(name, dentry, aflags);
+}
+static inline void audit_file(struct file *file)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_file(file);
+}
+static inline void audit_inode_parent_hidden(struct filename *name,
+ const struct dentry *dentry)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_inode(name, dentry,
+ AUDIT_INODE_PARENT | AUDIT_INODE_HIDDEN);
+}
+static inline void audit_inode_child(struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type) {
+ if (unlikely(!audit_dummy_context()))
+ __audit_inode_child(parent, dentry, type);
+}
+void audit_core_dumps(long signr);
+
+static inline void audit_ptrace(struct task_struct *t)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_ptrace(t);
+}
+
+ /* Private API (for audit.c only) */
+extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
+extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
+extern void __audit_bprm(struct linux_binprm *bprm);
+extern int __audit_socketcall(int nargs, unsigned long *args);
+extern int __audit_sockaddr(int len, void *addr);
+extern void __audit_fd_pair(int fd1, int fd2);
+extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
+extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout);
+extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
+extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
+extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new,
+ const struct cred *old);
+extern void __audit_log_capset(const struct cred *new, const struct cred *old);
+extern void __audit_mmap_fd(int fd, int flags);
+extern void __audit_log_kern_module(char *name);
+extern void __audit_fanotify(unsigned int response);
+extern void __audit_tk_injoffset(struct timespec64 offset);
+extern void __audit_ntp_log(const struct audit_ntp_data *ad);
+extern void __audit_log_nfcfg(const char *name, u8 af, unsigned int nentries,
+ enum audit_nfcfgop op, gfp_t gfp);
+
+static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_ipc_obj(ipcp);
+}
+static inline void audit_fd_pair(int fd1, int fd2)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_fd_pair(fd1, fd2);
+}
+static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_ipc_set_perm(qbytes, uid, gid, mode);
+}
+static inline void audit_bprm(struct linux_binprm *bprm)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_bprm(bprm);
+}
+static inline int audit_socketcall(int nargs, unsigned long *args)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_socketcall(nargs, args);
+ return 0;
+}
+
+static inline int audit_socketcall_compat(int nargs, u32 *args)
+{
+ unsigned long a[AUDITSC_ARGS];
+ int i;
+
+ if (audit_dummy_context())
+ return 0;
+
+ for (i = 0; i < nargs; i++)
+ a[i] = (unsigned long)args[i];
+ return __audit_socketcall(nargs, a);
+}
+
+static inline int audit_sockaddr(int len, void *addr)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_sockaddr(len, addr);
+ return 0;
+}
+static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_open(oflag, mode, attr);
+}
+static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
+}
+static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_notify(mqdes, notification);
+}
+static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_getsetattr(mqdes, mqstat);
+}
+
+static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new,
+ const struct cred *old)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_log_bprm_fcaps(bprm, new, old);
+ return 0;
+}
+
+static inline void audit_log_capset(const struct cred *new,
+ const struct cred *old)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_log_capset(new, old);
+}
+
+static inline void audit_mmap_fd(int fd, int flags)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mmap_fd(fd, flags);
+}
+
+static inline void audit_log_kern_module(char *name)
+{
+ if (!audit_dummy_context())
+ __audit_log_kern_module(name);
+}
+
+static inline void audit_fanotify(unsigned int response)
+{
+ if (!audit_dummy_context())
+ __audit_fanotify(response);
+}
+
+static inline void audit_tk_injoffset(struct timespec64 offset)
+{
+ /* ignore no-op events */
+ if (offset.tv_sec == 0 && offset.tv_nsec == 0)
+ return;
+
+ if (!audit_dummy_context())
+ __audit_tk_injoffset(offset);
+}
+
+static inline void audit_ntp_init(struct audit_ntp_data *ad)
+{
+ memset(ad, 0, sizeof(*ad));
+}
+
+static inline void audit_ntp_set_old(struct audit_ntp_data *ad,
+ enum audit_ntp_type type, long long val)
+{
+ ad->vals[type].oldval = val;
+}
+
+static inline void audit_ntp_set_new(struct audit_ntp_data *ad,
+ enum audit_ntp_type type, long long val)
+{
+ ad->vals[type].newval = val;
+}
+
+static inline void audit_ntp_log(const struct audit_ntp_data *ad)
+{
+ if (!audit_dummy_context())
+ __audit_ntp_log(ad);
+}
+
+static inline void audit_log_nfcfg(const char *name, u8 af,
+ unsigned int nentries,
+ enum audit_nfcfgop op, gfp_t gfp)
+{
+ if (audit_enabled)
+ __audit_log_nfcfg(name, af, nentries, op, gfp);
+}
+
+extern int audit_n_rules;
+extern int audit_signals;
+#else /* CONFIG_AUDITSYSCALL */
+static inline int audit_alloc(struct task_struct *task)
+{
+ return 0;
+}
+static inline void audit_free(struct task_struct *task)
+{ }
+static inline void audit_syscall_entry(int major, unsigned long a0,
+ unsigned long a1, unsigned long a2,
+ unsigned long a3)
+{ }
+static inline void audit_syscall_exit(void *pt_regs)
+{ }
+static inline bool audit_dummy_context(void)
+{
+ return true;
+}
+static inline void audit_set_context(struct task_struct *task, struct audit_context *ctx)
+{ }
+static inline struct audit_context *audit_context(void)
+{
+ return NULL;
+}
+static inline struct filename *audit_reusename(const __user char *name)
+{
+ return NULL;
+}
+static inline void audit_getname(struct filename *name)
+{ }
+static inline void audit_getcwd(void)
+{ }
+static inline void audit_inode(struct filename *name,
+ const struct dentry *dentry,
+ unsigned int aflags)
+{ }
+static inline void audit_file(struct file *file)
+{
+}
+static inline void audit_inode_parent_hidden(struct filename *name,
+ const struct dentry *dentry)
+{ }
+static inline void audit_inode_child(struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type)
+{ }
+static inline void audit_core_dumps(long signr)
+{ }
+static inline void audit_seccomp(unsigned long syscall, long signr, int code)
+{ }
+static inline void audit_seccomp_actions_logged(const char *names,
+ const char *old_names, int res)
+{ }
+static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
+{ }
+static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
+ gid_t gid, umode_t mode)
+{ }
+static inline void audit_bprm(struct linux_binprm *bprm)
+{ }
+static inline int audit_socketcall(int nargs, unsigned long *args)
+{
+ return 0;
+}
+
+static inline int audit_socketcall_compat(int nargs, u32 *args)
+{
+ return 0;
+}
+
+static inline void audit_fd_pair(int fd1, int fd2)
+{ }
+static inline int audit_sockaddr(int len, void *addr)
+{
+ return 0;
+}
+static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
+{ }
+static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
+ unsigned int msg_prio,
+ const struct timespec64 *abs_timeout)
+{ }
+static inline void audit_mq_notify(mqd_t mqdes,
+ const struct sigevent *notification)
+{ }
+static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
+{ }
+static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new,
+ const struct cred *old)
+{
+ return 0;
+}
+static inline void audit_log_capset(const struct cred *new,
+ const struct cred *old)
+{ }
+static inline void audit_mmap_fd(int fd, int flags)
+{ }
+
+static inline void audit_log_kern_module(char *name)
+{
+}
+
+static inline void audit_fanotify(unsigned int response)
+{ }
+
+static inline void audit_tk_injoffset(struct timespec64 offset)
+{ }
+
+static inline void audit_ntp_init(struct audit_ntp_data *ad)
+{ }
+
+static inline void audit_ntp_set_old(struct audit_ntp_data *ad,
+ enum audit_ntp_type type, long long val)
+{ }
+
+static inline void audit_ntp_set_new(struct audit_ntp_data *ad,
+ enum audit_ntp_type type, long long val)
+{ }
+
+static inline void audit_ntp_log(const struct audit_ntp_data *ad)
+{ }
+
+static inline void audit_ptrace(struct task_struct *t)
+{ }
+
+static inline void audit_log_nfcfg(const char *name, u8 af,
+ unsigned int nentries,
+ enum audit_nfcfgop op, gfp_t gfp)
+{ }
+
+#define audit_n_rules 0
+#define audit_signals 0
+#endif /* CONFIG_AUDITSYSCALL */
+
+static inline bool audit_loginuid_set(struct task_struct *tsk)
+{
+ return uid_valid(audit_get_loginuid(tsk));
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 17:47:23 +0000