packet_id.c File Reference

#include "syshead.h"
#include "packet_id.h"
#include "misc.h"
#include "integer.h"
#include "memdbg.h"

Include dependency graph for packet_id.c:

Go to the source code of this file.

Macros
#define	SEQ_UNSEEN   ((time_t)0)
#define	SEQ_EXPIRED   ((time_t)1)

Functions
static void	packet_id_debug (int msglevel, const struct packet_id_rec *p, const struct packet_id_net *pin, const char *message, int value)
void	packet_id_init (struct packet_id *p, int seq_backtrack, int time_backtrack, const char *name, int unit)
void	packet_id_free (struct packet_id *p)
void	packet_id_add (struct packet_id_rec *p, const struct packet_id_net *pin)
void	packet_id_reap (struct packet_id_rec *p)
bool	packet_id_test (struct packet_id_rec *p, const struct packet_id_net *pin)
bool	packet_id_read (struct packet_id_net *pin, struct buffer *buf, bool long_form)
static bool	packet_id_send_update (struct packet_id_send *p, bool long_form)
bool	packet_id_write (struct packet_id_send *p, struct buffer *buf, bool long_form, bool prepend)
	Write a packet ID to buf, and update the packet ID state. More...
const char *	packet_id_net_print (const struct packet_id_net *pin, bool print_timestamp, struct gc_arena *gc)
void	packet_id_persist_init (struct packet_id_persist *p)
void	packet_id_persist_close (struct packet_id_persist *p)
void	packet_id_persist_load (struct packet_id_persist *p, const char *filename)
void	packet_id_persist_save (struct packet_id_persist *p)
void	packet_id_persist_load_obj (const struct packet_id_persist *p, struct packet_id *pid)
const char *	packet_id_persist_print (const struct packet_id_persist *p, struct gc_arena *gc)

Macro Definition Documentation

SEQ_EXPIRED

#define SEQ_EXPIRED   ((time_t)1)

Definition at line 52 of file packet_id.c.

SEQ_UNSEEN

#define SEQ_UNSEEN   ((time_t)0)

Definition at line 51 of file packet_id.c.

Function Documentation

packet_id_add()

void packet_id_add	(	struct packet_id_rec *	p,
		const struct packet_id_net *	pin
	)

Definition at line 113 of file packet_id.c.

References CIRC_LIST_ITEM, CIRC_LIST_PUSH, CIRC_LIST_RESET, CIRC_LIST_SIZE, get_random(), packet_id_rec::id, packet_id_net::id, now, packet_id_rec::seq_backtrack, SEQ_EXPIRED, packet_id_rec::seq_list, SEQ_UNSEEN, packet_id_rec::time, and packet_id_net::time.

Referenced by crypto_check_replay().

packet_id_debug()

static void packet_id_debug ( int  msglevel, const struct packet_id_rec *  p, const struct packet_id_net *  pin, const char *  message, int  value  )

inlinestatic

Definition at line 64 of file packet_id.c.

References check_debug_level(), and unlikely.

Referenced by packet_id_test().

packet_id_free()

void packet_id_free

(

struct packet_id *

p

)

Definition at line 102 of file packet_id.c.

References CLEAR, D_PID_DEBUG, dmsg, packet_id::rec, and packet_id_rec::seq_list.

Referenced by do_close_packet_id(), key_state_free(), test_crypto_thread(), test_generate_reset_packet_tls_auth(), tls_auth_standalone_free(), and tls_wrap_free().

packet_id_init()

void packet_id_init	(	struct packet_id *	p,
		int	seq_backtrack,
		int	time_backtrack,
		const char *	name,
		int	unit
	)

Definition at line 79 of file packet_id.c.

References ASSERT, CIRC_LIST_ALLOC, CLEAR, D_PID_DEBUG, dmsg, packet_id_rec::initialized, MAX_SEQ_BACKTRACK, MAX_TIME_BACKTRACK, MIN_SEQ_BACKTRACK, MIN_TIME_BACKTRACK, packet_id_rec::name, packet_id::rec, packet_id_rec::seq_backtrack, packet_id_rec::seq_list, packet_id_rec::time_backtrack, and packet_id_rec::unit.

Referenced by do_init_crypto_static(), key_state_init(), test_generate_reset_packet_tls_auth(), test_tls_crypt_setup(), tls_auth_standalone_init(), tls_session_generate_dynamic_tls_crypt_key(), and tls_session_init().

packet_id_net_print()

const char* packet_id_net_print	(	const struct packet_id_net *	pin,
		bool	print_timestamp,
		struct gc_arena *	gc
	)

Definition at line 389 of file packet_id.c.

References alloc_buf_gc(), BSTR, buf_printf(), packet_id_net::id, packet_id_format, packet_id_net::time, and time_string().

Referenced by crypto_check_replay(), and protocol_dump().

packet_id_persist_close()

void packet_id_persist_close

(

struct packet_id_persist *

p

)

Definition at line 417 of file packet_id.c.

References D_PID_PERSIST, packet_id_persist::fd, packet_id_persist::filename, M_ERRNO, msg, packet_id_persist_enabled(), and packet_id_persist_init().

Referenced by do_close_packet_id().

packet_id_persist_init()

void packet_id_persist_init

(

struct packet_id_persist *

p

)

Definition at line 407 of file packet_id.c.

References packet_id_persist::fd, packet_id_persist::filename, packet_id_persist::id, packet_id_persist::id_last_written, packet_id_persist::time, and packet_id_persist::time_last_written.

Referenced by packet_id_persist_close().

packet_id_persist_load()

void packet_id_persist_load	(	struct packet_id_persist *	p,
		const char *	filename
	)

Definition at line 431 of file packet_id.c.

References D_PID_PERSIST, D_PID_PERSIST_DEBUG, dmsg, packet_id_persist::fd, packet_id_persist::filename, gc_free(), gc_new(), packet_id_persist::id, packet_id_persist_file_image::id, packet_id_persist::id_last_written, M_ERR, M_ERRNO, msg, O_BINARY, packet_id_persist_enabled(), packet_id_persist_print(), platform_open(), read, packet_id_persist::time, packet_id_persist_file_image::time, and packet_id_persist::time_last_written.

Referenced by init_crypto_pre().

packet_id_persist_load_obj()

void packet_id_persist_load_obj	(	const struct packet_id_persist *	p,
		struct packet_id *	pid
	)

Definition at line 522 of file packet_id.c.

References packet_id_rec::id, packet_id_persist::id, packet_id_persist_enabled(), packet_id::rec, packet_id_rec::time, and packet_id_persist::time.

Referenced by do_init_crypto_static(), and tls_session_init().

packet_id_persist_print()

const char* packet_id_persist_print	(	const struct packet_id_persist *	p,
		struct gc_arena *	gc
	)

Definition at line 532 of file packet_id.c.

References alloc_buf_gc(), buf_printf(), buffer::data, packet_id_persist::id, packet_id_format, packet_id_persist_enabled(), packet_id_persist::time, and time_string().

Referenced by packet_id_persist_load(), and packet_id_persist_save().

packet_id_persist_save()

void packet_id_persist_save

(

struct packet_id_persist *

p

)

Definition at line 480 of file packet_id.c.

References D_PID_PERSIST, D_PID_PERSIST_DEBUG, dmsg, packet_id_persist::fd, packet_id_persist::filename, gc_free(), gc_new(), packet_id_persist::id, packet_id_persist_file_image::id, packet_id_persist::id_last_written, M_ERRNO, msg, packet_id_persist_enabled(), packet_id_persist_print(), packet_id_persist::time, packet_id_persist_file_image::time, packet_id_persist::time_last_written, and write.

Referenced by do_close_packet_id(), and process_coarse_timers().

packet_id_read()

bool packet_id_read	(	struct packet_id_net *	pin,
		struct buffer *	buf,
		bool	long_form
	)

Definition at line 299 of file packet_id.c.

References buf_read(), packet_id_net::id, ntohpid, ntohtime, and packet_id_net::time.

Referenced by do_pre_decrypt_check(), openvpn_decrypt_aead(), openvpn_decrypt_v1(), protocol_dump(), and tls_crypt_unwrap().

packet_id_reap()

void packet_id_reap

(

struct packet_id_rec *

p

)

Definition at line 168 of file packet_id.c.

References CIRC_LIST_ITEM, CIRC_LIST_SIZE, packet_id_rec::last_reap, now, SEQ_EXPIRED, packet_id_rec::seq_list, and packet_id_rec::time_backtrack.

Referenced by packet_id_reap_test().

packet_id_send_update()

static bool packet_id_send_update ( struct packet_id_send *  p, bool  long_form  )

static

Definition at line 324 of file packet_id.c.

References packet_id_send::id, now, PACKET_ID_MAX, and packet_id_send::time.

Referenced by packet_id_write().

packet_id_test()

bool packet_id_test	(	struct packet_id_rec *	p,
		const struct packet_id_net *	pin
	)

Definition at line 200 of file packet_id.c.

References ASSERT, CIRC_LIST_ITEM, CIRC_LIST_SIZE, D_PID_DEBUG, D_PID_DEBUG_LOW, D_PID_DEBUG_MEDIUM, packet_id_rec::id, packet_id_net::id, packet_id_rec::initialized, packet_id_rec::max_backtrack_stat, packet_id_debug(), packet_id_rec::seq_backtrack, packet_id_rec::seq_list, packet_id_rec::time, and packet_id_net::time.

Referenced by crypto_check_replay().

packet_id_write()

bool packet_id_write	(	struct packet_id_send *	p,
		struct buffer *	buf,
		bool	long_form,
		bool	prepend
	)

Write a packet ID to buf, and update the packet ID state.

Parameters

p	Packet ID state.
buf	Buffer to write the packet ID too
long_form	If true, also update and write time_t to buf
prepend	If true, prepend to buffer, otherwise append.

Returns

true if successful, false otherwise.

Definition at line 347 of file packet_id.c.

References buf_write(), buf_write_prepend(), htonpid, htontime, packet_id_send::id, packet_id_send_update(), and packet_id_send::time.

Referenced by openvpn_encrypt_aead(), openvpn_encrypt_v1(), test_packet_id_write_long(), test_packet_id_write_long_prepend(), test_packet_id_write_long_wrap(), test_packet_id_write_short(), test_packet_id_write_short_prepend(), test_packet_id_write_short_wrap(), and tls_crypt_wrap().