rlm_radius_udp.c File Reference

RADIUS UDP transport. More...

#include <freeradius-devel/io/application.h>
#include <freeradius-devel/io/listen.h>
#include <freeradius-devel/io/pair.h>
#include <freeradius-devel/missing.h>
#include <freeradius-devel/server/connection.h>
#include <freeradius-devel/util/debug.h>
#include <freeradius-devel/util/heap.h>
#include <freeradius-devel/util/udp.h>
#include <sys/socket.h>
#include "rlm_radius.h"
#include "track.h"

Include dependency graph for rlm_radius_udp.c:

Go to the source code of this file.

Data Structures
struct	rlm_radius_udp_t
	Static configuration for the module. More...
struct	udp_coalesced_t
struct	udp_handle_t
	Track the handle, which is tightly correlated with the FD. More...
struct	udp_request_s
	Connect request_t to local tracking structure. More...
struct	udp_result_t
struct	udp_thread_t

Macros
#define	check(_handle, _len_p)

Typedefs
typedef struct udp_request_s	udp_request_t

Functions
static int	_udp_handle_free (udp_handle_t *h)
	Free a connection handle, closing associated resources. More...
static int	_udp_request_free (udp_request_t *u)
	Free a udp_request_t. More...
static int	_udp_result_free (udp_result_t *r)
	Free a udp_result_t. More...
static bool	check_for_zombie (fr_event_list_t *el, fr_trunk_connection_t *tconn, fr_time_t now, fr_time_t last_sent)
	See if the connection is zombied. More...
static void	conn_close (UNUSED fr_event_list_t *el, void *handle, UNUSED void *uctx)
	Shutdown/close a file descriptor. More...
static void	conn_discard (UNUSED fr_event_list_t *el, int fd, UNUSED int flags, void *uctx)
	Read and discard data. More...
static void	conn_error (UNUSED fr_event_list_t *el, UNUSED int fd, UNUSED int flags, int fd_errno, void *uctx)
	Connection errored. More...
static void	conn_error_status_check (UNUSED fr_event_list_t *el, UNUSED int fd, UNUSED int flags, int fd_errno, void *uctx)
	Connection errored. More...
static fr_connection_state_t	conn_failed (void *handle, fr_connection_state_t state, UNUSED void *uctx)
	Connection failed. More...
static fr_connection_state_t	conn_init (void **h_out, fr_connection_t *conn, void *uctx)
	Initialise a new outbound connection. More...
static void	conn_readable_status_check (fr_event_list_t *el, UNUSED int fd, UNUSED int flags, void *uctx)
	Read the incoming status-check response. More...
static void	conn_status_check_again (fr_event_list_t *el, UNUSED fr_time_t now, void *uctx)
	Send the next status check packet. More...
static void	conn_status_check_timeout (fr_event_list_t *el, fr_time_t now, void *uctx)
	Status check timer when opening the connection for the first time. More...
static void	conn_writable_status_check (fr_event_list_t *el, UNUSED int fd, UNUSED int flags, void *uctx)
	Send our status-check packet as soon as the connection becomes writable. More...
static void	conn_writable_status_check (UNUSED fr_event_list_t *el, UNUSED int fd, UNUSED int flags, void *uctx)
static decode_fail_t	decode (TALLOC_CTX *ctx, fr_pair_list_t *reply, uint8_t *response_code, udp_handle_t *h, request_t *request, udp_request_t *u, uint8_t const request_authenticator[static RADIUS_AUTH_VECTOR_LENGTH], uint8_t *data, size_t data_len)
	Decode response packet data, extracting relevant information and validating the packet. More...
static int	encode (rlm_radius_udp_t const *inst, request_t *request, udp_request_t *u, uint8_t id)
static unlang_action_t	mod_enqueue (rlm_rcode_t *p_result, void **rctx_out, void *instance, void *thread, request_t *request)
static int	mod_instantiate (module_inst_ctx_t const *mctx)
static unlang_action_t	mod_resume (rlm_rcode_t *p_result, module_ctx_t const *mctx, UNUSED request_t *request)
	Resume execution of the request, returning the rcode set during trunk execution. More...
static void	mod_signal (module_ctx_t const *mctx, UNUSED request_t *request, fr_signal_t action)
static int	mod_thread_instantiate (module_thread_inst_ctx_t const *mctx)
	Instantiate thread data for the submodule. More...
static void	protocol_error_reply (udp_request_t *u, udp_result_t *r, udp_handle_t *h)
	Deal with Protocol-Error replies, and possible negotiation. More...
static void	request_cancel (UNUSED fr_connection_t *conn, void *preq_to_reset, fr_trunk_cancel_reason_t reason, UNUSED void *uctx)
	Remove the request from any tracking structures. More...
static void	request_complete (request_t *request, void *preq, void *rctx, UNUSED void *uctx)
	Response has already been written to the rctx at this point. More...
static void	request_conn_release (fr_connection_t *conn, void *preq_to_reset, UNUSED void *uctx)
	Clear out anything associated with the handle from the request. More...
static void	request_conn_release_replicate (UNUSED fr_connection_t *conn, void *preq_to_reset, UNUSED void *uctx)
	Clear out anything associated with the handle from the request. More...
static void	request_demux (UNUSED fr_event_list_t *el, fr_trunk_connection_t *tconn, fr_connection_t *conn, UNUSED void *uctx)
static void	request_fail (request_t *request, void *preq, void *rctx, NDEBUG_UNUSED fr_trunk_request_state_t state, UNUSED void *uctx)
	Write out a canned failure. More...
static void	request_free (UNUSED request_t *request, void *preq_to_free, UNUSED void *uctx)
	Explicitly free resources associated with the protocol request. More...
static void	request_mux (fr_event_list_t *el, fr_trunk_connection_t *tconn, fr_connection_t *conn, UNUSED void *uctx)
static void	request_mux_replicate (UNUSED fr_event_list_t *el, fr_trunk_connection_t *tconn, fr_connection_t *conn, UNUSED void *uctx)
static int8_t	request_prioritise (void const *one, void const *two)
static void	request_retry (fr_event_list_t *el, fr_time_t now, void *uctx)
	Handle retries when a request is being sent asynchronously. More...
static void	request_timeout (fr_event_list_t *el, fr_time_t now, void *uctx)
	Handle timeouts when a request is being sent synchronously. More...
static void	revive_timeout (UNUSED fr_event_list_t *el, UNUSED fr_time_t now, void *uctx)
	Revive a connection after "revive_interval". More...
static void	status_check_alloc (udp_handle_t *h)
static void	status_check_next (UNUSED fr_event_list_t *el, UNUSED fr_time_t now, void *uctx)
	Handle retries for a status check. More...
static void	status_check_reply (fr_trunk_request_t *treq, fr_time_t now)
	Deal with replies replies to status checks and possible negotiation. More...
static void	status_check_reset (udp_handle_t *h, udp_request_t *u)
	Reset a status_check packet, ready to reuse. More...
static void	status_check_retry (UNUSED fr_event_list_t *el, fr_time_t now, void *uctx)
static fr_connection_t *	thread_conn_alloc (fr_trunk_connection_t *tconn, fr_event_list_t *el, fr_connection_conf_t const *conf, char const *log_prefix, void *uctx)
static void	thread_conn_notify (fr_trunk_connection_t *tconn, fr_connection_t *conn, fr_event_list_t *el, fr_trunk_connection_event_t notify_on, UNUSED void *uctx)
static void	thread_conn_notify_replicate (fr_trunk_connection_t *tconn, fr_connection_t *conn, fr_event_list_t *el, fr_trunk_connection_event_t notify_on, UNUSED void *uctx)
	A special version of the trunk/event loop glue function which always discards incoming data. More...
static void	udp_request_reset (udp_request_t *u)
	Clear out any connection specific resources from a udp request. More...
static void	udp_tracking_entry_log (fr_log_t const *log, fr_log_type_t log_type, char const *file, int line, radius_track_entry_t *te)
	Log additional information about a tracking entry. More...
static void	zombie_timeout (fr_event_list_t *el, fr_time_t now, void *uctx)
	Mark a connection dead after "zombie_interval". More...

Variables
static fr_dict_attr_t const *	attr_acct_delay_time
static fr_dict_attr_t const *	attr_error_cause
static fr_dict_attr_t const *	attr_event_timestamp
static fr_dict_attr_t const *	attr_extended_attribute_1
static fr_dict_attr_t const *	attr_message_authenticator
static fr_dict_attr_t const *	attr_nas_identifier
static fr_dict_attr_t const *	attr_original_packet_code
static fr_dict_attr_t const *	attr_packet_type
static fr_dict_attr_t const *	attr_proxy_state
static fr_dict_attr_t const *	attr_response_length
static fr_dict_attr_t const *	attr_user_password
static fr_dict_t const *	dict_radius
static const conf_parser_t	module_config []
static rlm_rcode_t	radius_code_to_rcode [FR_RADIUS_CODE_MAX]
	Turn a reply code into a module rcode;. More...
rlm_radius_io_t	rlm_radius_udp
fr_dict_autoload_t	rlm_radius_udp_dict []
fr_dict_attr_autoload_t	rlm_radius_udp_dict_attr []

Detailed Description

RADIUS UDP transport.

Id

8fe720681456fe47a9bbca30641313e2e59061a1

Copyright

2017 Network RADIUS SAS

2020 Arran Cudbard-Bell (a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg)

Definition in file rlm_radius_udp.c.

---

Data Structure Documentation

rlm_radius_udp_t

struct rlm_radius_udp_t

Static configuration for the module.

Definition at line 51 of file rlm_radius_udp.c.

Collaboration diagram for rlm_radius_udp_t:

Data Fields
CONF_SECTION *	config
fr_ipaddr_t	dst_ipaddr	IP of the home server.
uint16_t	dst_port	Port of the home server.
char const *	interface	Interface to bind to.
uint32_t	max_packet_size	Maximum packet size.
uint16_t	max_send_coalesce	Maximum number of packets to coalesce into one mmsg call.
rlm_radius_t *	parent	rlm_radius instance.
uint32_t	recv_buff	How big the kernel's receive buffer should be.
bool	recv_buff_is_set	Whether we were provided with a recv_buf.
bool	replicate	Copied from parent->replicate.
char const *	secret	Shared secret.
uint32_t	send_buff	How big the kernel's send buffer should be.
bool	send_buff_is_set	Whether we were provided with a send_buf.
fr_ipaddr_t	src_ipaddr	IP we open our socket on.
fr_trunk_conf_t *	trunk_conf	trunk configuration

udp_coalesced_t

struct udp_coalesced_t

Definition at line 90 of file rlm_radius_udp.c.

Collaboration diagram for udp_coalesced_t:

Data Fields
struct iovec	out	Describes buffer to send.
fr_trunk_request_t *	treq	Used for signalling.

udp_handle_t

struct udp_handle_t

Track the handle, which is tightly correlated with the FD.

Definition at line 98 of file rlm_radius_udp.c.

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Data Fields
int	active	active packets
uint8_t *	buffer	Receive buffer.
size_t	buflen	Receive buffer length.
udp_coalesced_t *	coalesced	Outbound coalesced requests.
fr_trunk_request_t **	coalesced	Outbound coalesced requests.
int	fd	File descriptor.
fr_time_t	first_sent	first time we sent a packet since going idle
int	id	starts at 1.
rlm_radius_udp_t const *	inst	Our module instance.
rlm_tacacs_tcp_t const *	inst	Our module instance.
uint8_t	last_id	Used when replicating to ensure IDs are distributed evenly.
fr_time_t	last_idle	last time we had nothing to do
fr_time_t	last_reply	When we last received a reply.
fr_time_t	last_sent	last time we sent a packet.
uint32_t	max_packet_size	Our max packet size. may be different from the parent.
struct mmsghdr *	mmsgvec	Vector of inbound/outbound packets.
char const *	module_name	the module that opened the connection
fr_time_t	mrs_time	Most recent sent time which had a reply.
char const *	name	From IP PORT to IP PORT.
tcp_buffer_t	recv	receive buffer
tcp_buffer_t	send	send buffer
size_t	send_buff_actual	What we believe the maximum SO_SNDBUF size to be. We don't try and encode more packet data than this in one go.
uint32_t	session_id	for TACACS+ "security".
fr_ipaddr_t	src_ipaddr	Source IP address. May be altered on bind to be the actual IP address packets will be sent on. This is why we can't use the inst src_ipaddr field.
uint16_t	src_port	Source port specific to this connection. Todo: not set by socket_client_tcp()
bool	status_checking	whether we're doing status checks
udp_result_t *	status_r	for faking out status checks as real packets
request_t *	status_request
udp_request_t *	status_u	for sending status check packets
fr_trunk_connection_t *	tconn	trunk connection
udp_thread_t *	thread
fr_trunk_request_t *	tracking[UINT8_MAX]	all sequential!
radius_track_t *	tt	RADIUS ID tracking structure.
fr_event_timer_t const *	zombie_ev	Zombie timeout.

udp_request_s

struct udp_request_s

Connect request_t to local tracking structure.

Definition at line 148 of file rlm_radius_udp.c.

Collaboration diagram for udp_request_s:

Data Fields
bool	can_retransmit	can we retransmit this packet?
uint8_t	code	Packet code.
fr_event_timer_t const *	ev	timer for retransmissions
fr_pair_list_t	extra	VPs for debugging, like Proxy-State.
uint8_t	id	Last ID assigned to this packet.
uint32_t	num_replies	number of reply packets, sent is in retry.count
bool	outstanding	are we waiting for a reply?
uint8_t *	packet	Packet we write to the network.
size_t	packet_len	Length of the packet.
uint32_t	priority	copied from request->async->priority
fr_time_t	recv_time	copied from request->async->recv_time
bool	require_ma	saved from the original packet.
fr_retry_t	retry	retransmission timers
radius_track_entry_t *	rr	ID tracking, resend count, etc.
bool	status_check	is this packet a status check?
bool	synchronous	cached from inst->parent->synchronous

udp_result_t

struct udp_result_t

Definition at line 83 of file rlm_radius_udp.c.

Collaboration diagram for udp_result_t:

Data Fields
rlm_rcode_t	rcode	from the transport
fr_trunk_request_t *	treq

udp_thread_t

struct udp_thread_t

Definition at line 75 of file rlm_radius_udp.c.

Collaboration diagram for udp_thread_t:

Data Fields
fr_event_list_t *	el	Event list.
rlm_radius_udp_t const *	inst	our instance
rlm_tacacs_tcp_t const *	inst	our instance
fr_trunk_t *	trunk	trunk handler

Macro Definition Documentation

check

#define check	(		_handle,
			_len_p
	)

Value:

                                            fr_radius_ok((_handle)->buffer, (size_t *)(_len_p), \
                                            (_handle)->thread->inst->parent->max_attributes, false, NULL)

Definition at line 45 of file rlm_radius_udp.c.

Typedef Documentation

udp_request_t

typedef struct udp_request_s udp_request_t

Definition at line 1 of file rlm_radius_udp.c.

Function Documentation

_udp_handle_free()

static int _udp_handle_free ( udp_handle_t *  h )

static

Free a connection handle, closing associated resources.

Definition at line 681 of file rlm_radius_udp.c.

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_udp_request_free()

static int _udp_request_free ( udp_request_t *  u )

static

Free a udp_request_t.

Definition at line 2660 of file rlm_radius_udp.c.

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_udp_result_free()

static int _udp_result_free ( udp_result_t *  r )

static

Free a udp_result_t.

Allows us to set break points for debugging.

Definition at line 2642 of file rlm_radius_udp.c.

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check_for_zombie()

static bool check_for_zombie ( fr_event_list_t *  el, fr_trunk_connection_t *  tconn, fr_time_t  now, fr_time_t  last_sent  )

static

See if the connection is zombied.

We check for zombie when major events happen:

1) request hits its final timeout
2) request timer hits, and it needs to be retransmitted
3) a DUP packet comes in, and the request needs to be retransmitted
4) we're sending a packet.

There MIGHT not be retries configured, so we MUST check for zombie when any new packet comes in. Similarly, there MIGHT not be new packets, but retries are configured, so we have to check there, too.

Also, the socket might not be writable for a while. There MIGHT be a long time between getting the timer / DUP signal, and the request finally being written to the socket. So we need to check for zombie at BOTH the timeout and the mux / write function.

Returns

• true if the connection is zombie.
• false if the connection is not zombie.

Definition at line 1530 of file rlm_radius_udp.c.

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conn_close()

static void conn_close ( UNUSED fr_event_list_t *  el, void *  handle, UNUSED void *  uctx  )

static

Shutdown/close a file descriptor.

Definition at line 870 of file rlm_radius_udp.c.

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conn_discard()

static void conn_discard ( UNUSED fr_event_list_t *  el, int  fd, UNUSED int  flags, void *  uctx  )

static

Read and discard data.

Definition at line 950 of file rlm_radius_udp.c.

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conn_error()

static void conn_error ( UNUSED fr_event_list_t *  el, UNUSED int  fd, UNUSED int  flags, int  fd_errno, void *  uctx  )

static

Connection errored.

We were signalled by the event loop that a fatal error occurred on this connection.

Parameters

[in]	el	The event list signalling.
[in]	fd	that errored.
[in]	flags	El flags.
[in]	fd_errno	The nature of the error.
[in]	uctx	The trunk connection handle (tconn).

Definition at line 985 of file rlm_radius_udp.c.

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conn_error_status_check()

static void conn_error_status_check ( UNUSED fr_event_list_t *  el, UNUSED int  fd, UNUSED int  flags, int  fd_errno, void *  uctx  )

static

Connection errored.

We were signalled by the event loop that a fatal error occurred on this connection.

Parameters

[in]	el	The event list signalling.
[in]	fd	that errored.
[in]	flags	El flags.
[in]	fd_errno	The nature of the error.
[in]	uctx	The trunk connection handle (tconn).

Definition at line 432 of file rlm_radius_udp.c.

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conn_failed()

static fr_connection_state_t conn_failed ( void *  handle, fr_connection_state_t  state, UNUSED void *  uctx  )

static

Connection failed.

Parameters

[in]	handle	of connection that failed.
[in]	state	the connection was in when it failed.
[in]	uctx	UNUSED.

Definition at line 897 of file rlm_radius_udp.c.

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conn_init()

static fr_connection_state_t conn_init ( void **  h_out, fr_connection_t *  conn, void *  uctx  )

static

Initialise a new outbound connection.

Parameters

[out]	h_out	Where to write the new file descriptor.
[in]	conn	to initialise.
[in]	uctx	A udp_thread_t

Definition at line 712 of file rlm_radius_udp.c.

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conn_readable_status_check()

static void conn_readable_status_check ( fr_event_list_t *  el, UNUSED int  fd, UNUSED int  flags, void *  uctx  )

static

Read the incoming status-check response.

If it's correct mark the connection as connected

Definition at line 515 of file rlm_radius_udp.c.

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conn_status_check_again()

static void conn_status_check_again ( fr_event_list_t *  el, UNUSED fr_time_t  now, void *  uctx  )

static

Send the next status check packet.

Definition at line 501 of file rlm_radius_udp.c.

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conn_status_check_timeout()

static void conn_status_check_timeout ( fr_event_list_t *  el, fr_time_t  now, void *  uctx  )

static

Status check timer when opening the connection for the first time.

Setup retries, or fail the connection.

Definition at line 453 of file rlm_radius_udp.c.

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conn_writable_status_check() [1/2]

static void conn_writable_status_check ( fr_event_list_t *  el, UNUSED int  fd, UNUSED int  flags, void *  uctx  )

static

Send our status-check packet as soon as the connection becomes writable.

Definition at line 619 of file rlm_radius_udp.c.

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conn_writable_status_check() [2/2]

static void conn_writable_status_check ( UNUSED fr_event_list_t *  el, UNUSED int  fd, UNUSED int  flags, void *  uctx  )

static

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decode()

static decode_fail_t decode ( TALLOC_CTX *  ctx, fr_pair_list_t *  reply, uint8_t *  response_code, udp_handle_t *  h, request_t *  request, udp_request_t *  u, uint8_t const  request_authenticator[static RADIUS_AUTH_VECTOR_LENGTH], uint8_t *  data, size_t  data_len  )

static

Decode response packet data, extracting relevant information and validating the packet.

Parameters

[in]	ctx	to allocate pairs in.
[out]	reply	Pointer to head of pair list to add reply attributes to.
[out]	response_code	The type of response packet.
[in]	h	connection handle.
[in]	request	the request.
[in]	u	UDP request.
[in]	request_authenticator	from the original request.
[in]	data	to decode.
[in]	data_len	Length of input data.

Returns

• DECODE_FAIL_NONE on success.
• DECODE_FAIL_* on failure.

Definition at line 1135 of file rlm_radius_udp.c.

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encode()

static int encode ( rlm_radius_udp_t const *  inst, request_t *  request, udp_request_t *  u, uint8_t  id  )

static

Definition at line 1196 of file rlm_radius_udp.c.

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mod_enqueue()

static unlang_action_t mod_enqueue ( rlm_rcode_t *  p_result, void **  rctx_out, void *  instance, void *  thread, request_t *  request  )

static

Definition at line 2669 of file rlm_radius_udp.c.

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mod_instantiate()

static int mod_instantiate ( module_inst_ctx_t const *  mctx )

static

Definition at line 2797 of file rlm_radius_udp.c.

mod_resume()

static unlang_action_t mod_resume ( rlm_rcode_t *  p_result, module_ctx_t const *  mctx, UNUSED request_t *  request  )

static

Resume execution of the request, returning the rcode set during trunk execution.

Definition at line 2568 of file rlm_radius_udp.c.

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mod_signal()

static void mod_signal ( module_ctx_t const *  mctx, UNUSED request_t *  request, fr_signal_t  action  )

static

Definition at line 2578 of file rlm_radius_udp.c.

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mod_thread_instantiate()

static int mod_thread_instantiate ( module_thread_inst_ctx_t const *  mctx )

static

Instantiate thread data for the submodule.

Definition at line 2754 of file rlm_radius_udp.c.

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protocol_error_reply()

static void protocol_error_reply ( udp_request_t *  u, udp_result_t *  r, udp_handle_t *  h  )

static

Deal with Protocol-Error replies, and possible negotiation.

Definition at line 2097 of file rlm_radius_udp.c.

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request_cancel()

static void request_cancel ( UNUSED fr_connection_t *  conn, void *  preq_to_reset, fr_trunk_cancel_reason_t  reason, UNUSED void *  uctx  )

static

Remove the request from any tracking structures.

Frees encoded packets if the request is being moved to a new connection

Definition at line 2448 of file rlm_radius_udp.c.

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request_complete()

static void request_complete ( request_t *  request, void *  preq, void *  rctx, UNUSED void *  uctx  )

static

Response has already been written to the rctx at this point.

Definition at line 2534 of file rlm_radius_udp.c.

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request_conn_release()

static void request_conn_release ( fr_connection_t *  conn, void *  preq_to_reset, UNUSED void *  uctx  )

static

Clear out anything associated with the handle from the request.

Definition at line 2481 of file rlm_radius_udp.c.

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request_conn_release_replicate()

static void request_conn_release_replicate ( UNUSED fr_connection_t *  conn, void *  preq_to_reset, UNUSED void *  uctx  )

static

Clear out anything associated with the handle from the request.

Definition at line 2501 of file rlm_radius_udp.c.

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request_demux()

static void request_demux ( UNUSED fr_event_list_t *  el, fr_trunk_connection_t *  tconn, fr_connection_t *  conn, UNUSED void *  uctx  )

static

Definition at line 2283 of file rlm_radius_udp.c.

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request_fail()

static void request_fail ( request_t *  request, void *  preq, void *  rctx, NDEBUG_UNUSED fr_trunk_request_state_t  state, UNUSED void *  uctx  )

static

Write out a canned failure.

Definition at line 2513 of file rlm_radius_udp.c.

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request_free()

static void request_free ( UNUSED request_t *  request, void *  preq_to_free, UNUSED void *  uctx  )

static

Explicitly free resources associated with the protocol request.

Definition at line 2551 of file rlm_radius_udp.c.

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request_mux()

static void request_mux ( fr_event_list_t *  el, fr_trunk_connection_t *  tconn, fr_connection_t *  conn, UNUSED void *  uctx  )

static

Definition at line 1710 of file rlm_radius_udp.c.

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request_mux_replicate()

static void request_mux_replicate ( UNUSED fr_event_list_t *  el, fr_trunk_connection_t *  tconn, fr_connection_t *  conn, UNUSED void *  uctx  )

static

Definition at line 1966 of file rlm_radius_udp.c.

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request_prioritise()

static int8_t request_prioritise ( void const *  one, void const *  two  )

static

Definition at line 1094 of file rlm_radius_udp.c.

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request_retry()

static void request_retry ( fr_event_list_t *  el, fr_time_t  now, void *  uctx  )

static

Handle retries when a request is being sent asynchronously.

Definition at line 1610 of file rlm_radius_udp.c.

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request_timeout()

static void request_timeout ( fr_event_list_t *  el, fr_time_t  now, void *  uctx  )

static

Handle timeouts when a request is being sent synchronously.

Definition at line 1587 of file rlm_radius_udp.c.

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revive_timeout()

static void revive_timeout ( UNUSED fr_event_list_t *  el, UNUSED fr_time_t  now, void *  uctx  )

static

Revive a connection after "revive_interval".

Definition at line 1460 of file rlm_radius_udp.c.

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status_check_alloc()

static void status_check_alloc ( udp_handle_t *  h )

static

Definition at line 323 of file rlm_radius_udp.c.

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status_check_next()

static void status_check_next ( UNUSED fr_event_list_t *  el, UNUSED fr_time_t  now, void *  uctx  )

static

Handle retries for a status check.

Definition at line 2212 of file rlm_radius_udp.c.

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status_check_reply()

static void status_check_reply ( fr_trunk_request_t *  treq, fr_time_t  now  )

static

Deal with replies replies to status checks and possible negotiation.

Definition at line 2227 of file rlm_radius_udp.c.

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status_check_reset()

static void status_check_reset ( udp_handle_t *  h, udp_request_t *  u  )

static

Reset a status_check packet, ready to reuse.

Definition at line 306 of file rlm_radius_udp.c.

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status_check_retry()

static void status_check_retry ( UNUSED fr_event_list_t *  el, fr_time_t  now, void *  uctx  )

static

Definition at line 1655 of file rlm_radius_udp.c.

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thread_conn_alloc()

static fr_connection_t* thread_conn_alloc ( fr_trunk_connection_t *  tconn, fr_event_list_t *  el, fr_connection_conf_t const *  conf, char const *  log_prefix, void *  uctx  )

static

Definition at line 923 of file rlm_radius_udp.c.

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thread_conn_notify()

static void thread_conn_notify ( fr_trunk_connection_t *  tconn, fr_connection_t *  conn, fr_event_list_t *  el, fr_trunk_connection_event_t  notify_on, UNUSED void *  uctx  )

static

Definition at line 996 of file rlm_radius_udp.c.

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thread_conn_notify_replicate()

static void thread_conn_notify_replicate ( fr_trunk_connection_t *  tconn, fr_connection_t *  conn, fr_event_list_t *  el, fr_trunk_connection_event_t  notify_on, UNUSED void *  uctx  )

static

A special version of the trunk/event loop glue function which always discards incoming data.

Definition at line 1048 of file rlm_radius_udp.c.

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udp_request_reset()

static void udp_request_reset ( udp_request_t *  u )

static

Clear out any connection specific resources from a udp request.

Definition at line 290 of file rlm_radius_udp.c.

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udp_tracking_entry_log()

static void udp_tracking_entry_log ( fr_log_t const *  log, fr_log_type_t  log_type, char const *  file, int  line, radius_track_entry_t *  te  )

static

Log additional information about a tracking entry.

Parameters

[in]	te	Tracking entry we're logging information for.
[in]	log	destination.
[in]	log_type	Type of log message.
[in]	file	the logging request was made in.
[in]	line	logging request was made on.

Definition at line 271 of file rlm_radius_udp.c.

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zombie_timeout()

static void zombie_timeout ( fr_event_list_t *  el, fr_time_t  now, void *  uctx  )

static

Mark a connection dead after "zombie_interval".

Definition at line 1472 of file rlm_radius_udp.c.

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Variable Documentation

attr_acct_delay_time

fr_dict_attr_t const* attr_acct_delay_time

static

Definition at line 203 of file rlm_radius_udp.c.

attr_error_cause

fr_dict_attr_t const* attr_error_cause

static

Definition at line 204 of file rlm_radius_udp.c.

attr_event_timestamp

fr_dict_attr_t const* attr_event_timestamp

static

Definition at line 205 of file rlm_radius_udp.c.

attr_extended_attribute_1

fr_dict_attr_t const* attr_extended_attribute_1

static

Definition at line 206 of file rlm_radius_udp.c.

attr_message_authenticator

fr_dict_attr_t const* attr_message_authenticator

static

Definition at line 207 of file rlm_radius_udp.c.

attr_nas_identifier

fr_dict_attr_t const* attr_nas_identifier

static

Definition at line 208 of file rlm_radius_udp.c.

attr_original_packet_code

fr_dict_attr_t const* attr_original_packet_code

static

Definition at line 209 of file rlm_radius_udp.c.

attr_packet_type

fr_dict_attr_t const* attr_packet_type

static

Definition at line 213 of file rlm_radius_udp.c.

attr_proxy_state

fr_dict_attr_t const* attr_proxy_state

static

Definition at line 210 of file rlm_radius_udp.c.

attr_response_length

fr_dict_attr_t const* attr_response_length

static

Definition at line 211 of file rlm_radius_udp.c.

attr_user_password

fr_dict_attr_t const* attr_user_password

static

Definition at line 212 of file rlm_radius_udp.c.

dict_radius

fr_dict_t const* dict_radius

static

Definition at line 195 of file rlm_radius_udp.c.

module_config

const conf_parser_t module_config[]

static

Initial value:

= {
        { FR_CONF_OFFSET_TYPE_FLAGS("ipaddr", FR_TYPE_COMBO_IP_ADDR, 0, rlm_radius_udp_t, dst_ipaddr), },
        { FR_CONF_OFFSET_TYPE_FLAGS("ipv4addr", FR_TYPE_IPV4_ADDR, 0, rlm_radius_udp_t, dst_ipaddr) },
        { FR_CONF_OFFSET_TYPE_FLAGS("ipv6addr", FR_TYPE_IPV6_ADDR, 0, rlm_radius_udp_t, dst_ipaddr) },
 
        { FR_CONF_OFFSET("port", rlm_radius_udp_t, dst_port) },
 
        { FR_CONF_OFFSET_FLAGS("secret", CONF_FLAG_REQUIRED, rlm_radius_udp_t, secret) },
 
        { FR_CONF_OFFSET("interface", rlm_radius_udp_t, interface) },
 
        { FR_CONF_OFFSET_IS_SET("recv_buff", FR_TYPE_UINT32, 0, rlm_radius_udp_t, recv_buff) },
        { FR_CONF_OFFSET_IS_SET("send_buff", FR_TYPE_UINT32, 0, rlm_radius_udp_t, send_buff) },
 
        { FR_CONF_OFFSET("max_packet_size", rlm_radius_udp_t, max_packet_size), .dflt = "4096" },
        { FR_CONF_OFFSET("max_send_coalesce", rlm_radius_udp_t, max_send_coalesce), .dflt = "1024" },
 
        { FR_CONF_OFFSET_TYPE_FLAGS("src_ipaddr", FR_TYPE_COMBO_IP_ADDR, 0, rlm_radius_udp_t, src_ipaddr) },
        { FR_CONF_OFFSET_TYPE_FLAGS("src_ipv4addr", FR_TYPE_IPV4_ADDR, 0, rlm_radius_udp_t, src_ipaddr) },
        { FR_CONF_OFFSET_TYPE_FLAGS("src_ipv6addr", FR_TYPE_IPV6_ADDR, 0, rlm_radius_udp_t, src_ipaddr) },
 
        CONF_PARSER_TERMINATOR
}

Definition at line 171 of file rlm_radius_udp.c.

radius_code_to_rcode

rlm_rcode_t radius_code_to_rcode[FR_RADIUS_CODE_MAX]

static

Initial value:

= {
        [FR_RADIUS_CODE_ACCESS_ACCEPT]          = RLM_MODULE_OK,
        [FR_RADIUS_CODE_ACCESS_CHALLENGE]       = RLM_MODULE_UPDATED,
        [FR_RADIUS_CODE_ACCESS_REJECT]          = RLM_MODULE_REJECT,
 
        [FR_RADIUS_CODE_ACCOUNTING_RESPONSE]    = RLM_MODULE_OK,
 
        [FR_RADIUS_CODE_COA_ACK]                = RLM_MODULE_OK,
        [FR_RADIUS_CODE_COA_NAK]                = RLM_MODULE_REJECT,
 
        [FR_RADIUS_CODE_DISCONNECT_ACK] = RLM_MODULE_OK,
        [FR_RADIUS_CODE_DISCONNECT_NAK] = RLM_MODULE_REJECT,
 
        [FR_RADIUS_CODE_PROTOCOL_ERROR] = RLM_MODULE_HANDLED,
}

Turn a reply code into a module rcode;.

Definition at line 234 of file rlm_radius_udp.c.

rlm_radius_udp

rlm_radius_io_t rlm_radius_udp

Initial value:

= {
        .common = {
                .magic                  = MODULE_MAGIC_INIT,
                .name                   = "radius_udp",
                .inst_size              = sizeof(rlm_radius_udp_t),
 
                .thread_inst_size       = sizeof(udp_thread_t),
                .thread_inst_type       = "udp_thread_t",
 
                .config                 = module_config,
                .instantiate            = mod_instantiate,
                .thread_instantiate     = mod_thread_instantiate,
        },
        .enqueue                = mod_enqueue,
        .signal                 = mod_signal,
        .resume                 = mod_resume,
}

Definition at line 2892 of file rlm_radius_udp.c.

rlm_radius_udp_dict

fr_dict_autoload_t rlm_radius_udp_dict

Initial value:

= {
        { .out = &dict_radius, .proto = "radius" },
        { NULL }
}

Definition at line 198 of file rlm_radius_udp.c.

rlm_radius_udp_dict_attr

fr_dict_attr_autoload_t rlm_radius_udp_dict_attr

Initial value:

= {
        { .out = &attr_acct_delay_time, .name = "Acct-Delay-Time", .type = FR_TYPE_UINT32, .dict = &dict_radius},
        { .out = &attr_error_cause, .name = "Error-Cause", .type = FR_TYPE_UINT32, .dict = &dict_radius },
        { .out = &attr_event_timestamp, .name = "Event-Timestamp", .type = FR_TYPE_DATE, .dict = &dict_radius},
        { .out = &attr_extended_attribute_1, .name = "Extended-Attribute-1", .type = FR_TYPE_TLV, .dict = &dict_radius},
        { .out = &attr_message_authenticator, .name = "Message-Authenticator", .type = FR_TYPE_OCTETS, .dict = &dict_radius},
        { .out = &attr_nas_identifier, .name = "NAS-Identifier", .type = FR_TYPE_STRING, .dict = &dict_radius},
        { .out = &attr_original_packet_code, .name = "Extended-Attribute-1.Original-Packet-Code", .type = FR_TYPE_UINT32, .dict = &dict_radius},
        { .out = &attr_proxy_state, .name = "Proxy-State", .type = FR_TYPE_OCTETS, .dict = &dict_radius},
        { .out = &attr_response_length, .name = "Extended-Attribute-1.Response-Length", .type = FR_TYPE_UINT32, .dict = &dict_radius },
        { .out = &attr_user_password, .name = "User-Password", .type = FR_TYPE_STRING, .dict = &dict_radius},
        { .out = &attr_packet_type, .name = "Packet-Type", .type = FR_TYPE_UINT32, .dict = &dict_radius },
        { NULL }
}

Definition at line 216 of file rlm_radius_udp.c.