#include "dhcpd.h"
#include <syslog.h>
#include <signal.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <limits.h>
#include <isc/file.h>
#include <isc/util.h>
#include <dns/result.h>

Macros
#define	ASSERT_STATE(state_is, state_shouldbe) {}

Functions
int	asprintf (char *strp, const char fmt,...)

void	run_stateless (int exit_mode, u_int16_t port)

int	main (int argc, char **argv)

isc_result_t	find_class (struct class *c, const char s, const char *file, int line)

int	check_collection (struct packet packet, struct lease lease, struct collection *collection)

void	classify (struct packet packet, struct class class)

void	unbill_class (struct lease *lease)

int	find_subnet (struct subnet *sp, struct iaddr addr, const char file, int line)

void	state_reboot (void *cpp)

void	state_init (void *cpp)

void	state_selecting (void *cpp)

void	dhcpack (struct packet *packet)

void	bind_lease (struct client_state *client)

void	state_bound (void *cpp)

void	state_stop (void *cpp)

int	commit_leases ()

int	write_lease (struct lease *lease)

int	write_host (struct host_decl *host)

void	db_startup (int testp)

void	bootp (struct packet *packet)

void	dhcp (struct packet *packet)

void	dhcpoffer (struct packet *packet)

struct client_lease *	packet_to_lease (struct packet packet, struct client_state client)

void	dhcpnak (struct packet *packet)

void	send_discover (void *cpp)

void	state_panic (void *cpp)

void	send_request (void *cpp)

void	send_decline (void *cpp)

void	send_release (void *cpp)

void	make_client_options (struct client_state client, struct client_lease lease, u_int8_t type, struct option_cache sid, struct iaddr rip, struct option prl, struct option_state *op)

void	make_discover (struct client_state client, struct client_lease lease)

void	make_request (struct client_state client, struct client_lease lease)

void	make_decline (struct client_state client, struct client_lease lease)

void	make_release (struct client_state client, struct client_lease lease)

void	destroy_client_lease (struct client_lease *lease)

void	rewrite_client_leases ()

void	write_lease_option (struct option_cache oc, struct packet packet, struct lease lease, struct client_state client_state, struct option_state in_options, struct option_state cfg_options, struct binding_scope *scope, struct universe u, void *stuff)

int	unhexchar (char c)

isc_result_t	read_uuid (u_int8_t *uuid)

isc_result_t	form_duid (struct data_string duid, const char file, int line)

isc_result_t	write_client6_lease (struct client_state client, struct dhc6_lease lease, int rewrite, int sync)

int	write_client_lease (struct client_state client, struct client_lease lease, int rewrite, int makesure)

void	script_init (struct client_state client, const char reason, struct string_list *medium)
	Initializes basic variables for a script. More...

void	client_option_envadd (struct option_cache oc, struct packet packet, struct lease lease, struct client_state client_state, struct option_state in_options, struct option_state cfg_options, struct binding_scope *scope, struct universe u, void *stuff)

void	script_write_params (struct client_state client, const char prefix, struct client_lease *lease)
	Adds parameters to environment variables for a script. More...

void	script_write_requested (struct client_state *client)
	Write out the environent variable the client requested. Write out the environment variables for the objects that the client requested. If the object was requested the variable will be: requested_<option_name>=1 If it wasn't requested there won't be a variable. More...

int	script_go (struct client_state *client)
	Calls external script. More...

void	client_envadd (struct client_state client, const char prefix, const char name, const char fmt,...)

int	dhcp_option_ev_name (char buf, size_t buflen, struct option option)

void	go_daemon ()

void	write_client_pid_file ()

void	client_location_changed ()

void	do_release (struct client_state *client)

int	dhclient_interface_shutdown_hook (struct interface_info *interface)

int	dhclient_interface_discovery_hook (struct interface_info *tmp)

isc_result_t	dhclient_interface_startup_hook (struct interface_info *interface)

int	parse_agent_information_option (struct packet packet, int len, u_int8_t data)

unsigned	cons_agent_information_options (struct option_state cfg_options, struct dhcp_packet outpacket, unsigned agentix, unsigned length)

isc_result_t	dhcp_set_control_state (control_object_state_t oldstate, control_object_state_t newstate)

void	dhcpv4_client_assignments (void)

Variables
TIME	default_lease_time = 43200

TIME	max_lease_time = 86400

const char *	path_dhclient_conf = _PATH_DHCLIENT_CONF

const char *	path_dhclient_db = NULL

const char *	path_dhclient_pid = NULL

char *	path_dhclient_script = path_dhclient_script_array

const char *	path_dhclient_duid = NULL

isc_boolean_t	no_pid_file = ISC_FALSE

int	dhcp_max_agent_option_packet_length = 0

int	interfaces_requested = 0

struct iaddr	iaddr_broadcast = { 4, { 255, 255, 255, 255 } }

struct iaddr	iaddr_any = { 4, { 0, 0, 0, 0 } }

struct in_addr	inaddr_any

struct sockaddr_in	sockaddr_broadcast

struct in_addr	giaddr

struct data_string	default_duid

int	duid_type = 0

int	duid_v4 = 1

int	std_dhcid = 0

u_int16_t	local_port = 0

u_int16_t	remote_port = 0

int	no_daemon = 0

struct string_list *	client_env = NULL

int	client_env_count = 0

int	onetry = 0

int	quiet = 1

int	nowait = 0

int	stateless = 0

int	wanted_ia_na = -1

int	wanted_ia_ta = 0

int	wanted_ia_pd = 0

int	require_all_ias = 0

int	dad_wait_time = 0

char *	mockup_relay = NULL

char *	progname = NULL

int	bootp_broadcast_always = 0

int	address_prefix_len = DHCLIENT_DEFAULT_PREFIX_LEN

struct option *	default_requested_options []

FILE *	leaseFile = NULL

int	leases_written = 0

char	scriptName [256]

FILE *	scriptFile

Macro Definition Documentation

◆ ASSERT_STATE

#define ASSERT_STATE	(	state_is,
		state_shouldbe
	)	{}

Definition at line 83 of file dhclient.c.

Function Documentation

◆ asprintf()

int asprintf	(	char **	strp,
		const char *	fmt,
			...
	)

◆ bind_lease()

void bind_lease ( struct client_state * client )

Definition at line 1857 of file dhclient.c.

◆ bootp()

void bootp ( struct packet * packet )

Definition at line 2027 of file dhclient.c.

◆ check_collection()

int check_collection	(	struct packet *	packet,
		struct lease *	lease,
		struct collection *	collection
	)

Definition at line 1428 of file dhclient.c.

◆ classify()

void classify	(	struct packet *	packet,
		struct class *	class
	)

Definition at line 1436 of file dhclient.c.

◆ client_envadd()

void client_envadd	(	struct client_state *	client,
		const char *	prefix,
		const char *	name,
		const char *	fmt,
			...
	)

Definition at line 4783 of file dhclient.c.

◆ client_location_changed()

void client_location_changed ( void )

Definition at line 4930 of file dhclient.c.

◆ client_option_envadd()

void client_option_envadd	(	struct option_cache *	oc,
		struct packet *	packet,
		struct lease *	lease,
		struct client_state *	client_state,
		struct option_state *	in_options,
		struct option_state *	cfg_options,
		struct binding_scope **	scope,
		struct universe *	u,
		void *	stuff
	)

Definition at line 4490 of file dhclient.c.

◆ commit_leases()

int commit_leases ( void )

Definition at line 2005 of file dhclient.c.

◆ cons_agent_information_options()

unsigned cons_agent_information_options	(	struct option_state *	cfg_options,
		struct dhcp_packet *	outpacket,
		unsigned	agentix,
		unsigned	length
	)

Definition at line 5154 of file dhclient.c.

◆ db_startup()

void db_startup ( int testp )

Definition at line 2022 of file dhclient.c.

◆ destroy_client_lease()

void destroy_client_lease ( struct client_lease * lease )

Definition at line 3829 of file dhclient.c.

◆ dhclient_interface_discovery_hook()

int dhclient_interface_discovery_hook ( struct interface_info * tmp )

Definition at line 5049 of file dhclient.c.

◆ dhclient_interface_shutdown_hook()

int dhclient_interface_shutdown_hook ( struct interface_info * interface )

Definition at line 5042 of file dhclient.c.

◆ dhclient_interface_startup_hook()

isc_result_t dhclient_interface_startup_hook ( struct interface_info * interface )

Definition at line 5092 of file dhclient.c.

◆ dhcp()

void dhcp ( struct packet * packet )

Definition at line 2060 of file dhclient.c.

◆ dhcp_option_ev_name()

int dhcp_option_ev_name	(	char *	buf,
		size_t	buflen,
		struct option *	option
	)

Definition at line 4821 of file dhclient.c.

◆ dhcp_set_control_state()

isc_result_t dhcp_set_control_state	(	control_object_state_t	oldstate,
		control_object_state_t	newstate
	)

Definition at line 5241 of file dhclient.c.

◆ dhcpack()

void dhcpack ( struct packet * packet )

Definition at line 1680 of file dhclient.c.

◆ dhcpnak()

void dhcpnak ( struct packet * packet )

Definition at line 2605 of file dhclient.c.

◆ dhcpoffer()

void dhcpoffer ( struct packet * packet )

Definition at line 2347 of file dhclient.c.

◆ dhcpv4_client_assignments()

void dhcpv4_client_assignments ( void )

Definition at line 5636 of file dhclient.c.

◆ do_release()

void do_release ( struct client_state * client )

Definition at line 4964 of file dhclient.c.

◆ find_class()

isc_result_t find_class	(	struct class **	c,
		const char *	s,
		const char *	file,
		int	line
	)

Definition at line 1422 of file dhclient.c.

◆ find_subnet()

int find_subnet	(	struct subnet **	sp,
		struct iaddr	addr,
		const char *	file,
		int	line
	)

Definition at line 1447 of file dhclient.c.

◆ form_duid()

isc_result_t form_duid	(	struct data_string *	duid,
		const char *	file,
		int	line
	)

Definition at line 4029 of file dhclient.c.

◆ go_daemon()

void go_daemon ( void )

Definition at line 4861 of file dhclient.c.

◆ main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 210 of file dhclient.c.

◆ make_client_options()

void make_client_options	(	struct client_state *	client,
		struct client_lease *	lease,
		u_int8_t *	type,
		struct option_cache *	sid,
		struct iaddr *	rip,
		struct option **	prl,
		struct option_state **	op
	)

Definition at line 3407 of file dhclient.c.

◆ make_decline()

void make_decline	(	struct client_state *	client,
		struct client_lease *	lease
	)

Definition at line 3712 of file dhclient.c.

◆ make_discover()

void make_discover	(	struct client_state *	client,
		struct client_lease *	lease
	)

Definition at line 3557 of file dhclient.c.

◆ make_release()

void make_release	(	struct client_state *	client,
		struct client_lease *	lease
	)

Definition at line 3772 of file dhclient.c.

◆ make_request()

void make_request	(	struct client_state *	client,
		struct client_lease *	lease
	)

Definition at line 3622 of file dhclient.c.

◆ packet_to_lease()

struct client_lease* packet_to_lease	(	struct packet *	packet,
		struct client_state *	client
	)

Definition at line 2482 of file dhclient.c.

◆ parse_agent_information_option()

int parse_agent_information_option	(	struct packet *	packet,
		int	len,
		u_int8_t *	data
	)

Definition at line 5144 of file dhclient.c.

◆ read_uuid()

isc_result_t read_uuid ( u_int8_t * uuid )

Definition at line 3976 of file dhclient.c.

◆ rewrite_client_leases()

void rewrite_client_leases ( void )

Definition at line 3843 of file dhclient.c.

◆ run_stateless()

void run_stateless	(	int	exit_mode,
		u_int16_t	port
	)

Definition at line 1305 of file dhclient.c.

◆ script_go()

int script_go ( struct client_state * client )

Calls external script.

External script is specified either using -sf command line or script parameter in the configuration file.

Parameters

client specifies client information (environment variables, and other parameters will be extracted and passed to the script.

Returns: If positive, it contains exit code of the process running script. If negative, returns the signal number that cause the script process to terminate.

Definition at line 4703 of file dhclient.c.

◆ script_init()

void script_init	(	struct client_state *	client,
		const char *	reason,
		struct string_list *	medium
	)

Initializes basic variables for a script.

This function is called as an initial preparation for calling a script. It sets up a number of common env. variables that will be passed to the script. For actual script calling, see script_go .

Parameters

client	variables will be stored here (if null, the whole function is no-op)
reason	specified the reason for calling a script (must be non-null)
medium	if specified, defines medium type (may be null)

Definition at line 4459 of file dhclient.c.

◆ script_write_params()

void script_write_params	(	struct client_state *	client,
		const char *	prefix,
		struct client_lease *	lease
	)

Adds parameters to environment variables for a script.

This function add details of specified lease to a list of env. variables to be passed to a script. The lease details will be prepended with specified prefix (e.g. "old_") and added to the list stored in client. Following variables may be set:

ip_address
next_server
network_number
broadcast_address
filename
server_name
expiry

Parameters

client	env. variables will be stored here
prefix	textual prefix to be added to each variable (e.g. "old_")
lease	lease details will be extracted from here

Definition at line 4550 of file dhclient.c.

◆ script_write_requested()

void script_write_requested ( struct client_state * client )

Write out the environent variable the client requested. Write out the environment variables for the objects that the client requested. If the object was requested the variable will be: requested_<option_name>=1 If it wasn't requested there won't be a variable.

Parameters

client client structure

Definition at line 4673 of file dhclient.c.

◆ send_decline()

void send_decline ( void * cpp )

Definition at line 3130 of file dhclient.c.

◆ send_discover()

void send_discover ( void * cpp )

Definition at line 2684 of file dhclient.c.

◆ send_release()

void send_release ( void * cpp )

Definition at line 3169 of file dhclient.c.

◆ send_request()

void send_request ( void * cpp )

Definition at line 2931 of file dhclient.c.

◆ state_bound()

void state_bound ( void * cpp )

Definition at line 1939 of file dhclient.c.

◆ state_init()

void state_init ( void * cpp )

Definition at line 1558 of file dhclient.c.

◆ state_panic()

void state_panic ( void * cpp )

Definition at line 2814 of file dhclient.c.

◆ state_reboot()

void state_reboot ( void * cpp )

Definition at line 1505 of file dhclient.c.

◆ state_selecting()

void state_selecting ( void * cpp )

Definition at line 1595 of file dhclient.c.

◆ state_stop()

void state_stop ( void * cpp )

Definition at line 1981 of file dhclient.c.

◆ unbill_class()

void unbill_class ( struct lease * lease )

Definition at line 1442 of file dhclient.c.

◆ unhexchar()

int unhexchar ( char c )

Definition at line 3961 of file dhclient.c.

◆ write_client6_lease()

isc_result_t write_client6_lease	(	struct client_state *	client,
		struct dhc6_lease *	lease,
		int	rewrite,
		int	sync
	)

Definition at line 4149 of file dhclient.c.

◆ write_client_lease()

int write_client_lease	(	struct client_state *	client,
		struct client_lease *	lease,
		int	rewrite,
		int	makesure
	)

Definition at line 4303 of file dhclient.c.

◆ write_client_pid_file()

void write_client_pid_file ( void )

Definition at line 4903 of file dhclient.c.

◆ write_host()

int write_host ( struct host_decl * host )

Definition at line 2016 of file dhclient.c.

◆ write_lease()

int write_lease ( struct lease * lease )

Definition at line 2010 of file dhclient.c.

◆ write_lease_option()

void write_lease_option	(	struct option_cache *	oc,
		struct packet *	packet,
		struct lease *	lease,
		struct client_state *	client_state,
		struct option_state *	in_options,
		struct option_state *	cfg_options,
		struct binding_scope **	scope,
		struct universe *	u,
		void *	stuff
	)

Definition at line 3905 of file dhclient.c.

Variable Documentation

◆ address_prefix_len

int address_prefix_len = DHCLIENT_DEFAULT_PREFIX_LEN

Definition at line 117 of file dhclient.c.

◆ bootp_broadcast_always

int bootp_broadcast_always = 0

Definition at line 115 of file dhclient.c.

◆ client_env

struct string_list* client_env = NULL

Definition at line 98 of file dhclient.c.

◆ client_env_count

int client_env_count = 0

Definition at line 99 of file dhclient.c.

◆ dad_wait_time

int dad_wait_time = 0

Definition at line 110 of file dhclient.c.

◆ default_duid

struct data_string default_duid

Definition at line 76 of file dhclient.c.

◆ default_lease_time

TIME default_lease_time = 43200

Definition at line 54 of file dhclient.c.

◆ default_requested_options

struct option* default_requested_options[]

Definition at line 36 of file clparse.c.

◆ dhcp_max_agent_option_packet_length

int dhcp_max_agent_option_packet_length = 0

Definition at line 67 of file dhclient.c.

◆ duid_type

int duid_type = 0

Definition at line 77 of file dhclient.c.

◆ duid_v4

int duid_v4 = 1

Definition at line 78 of file dhclient.c.

◆ giaddr

struct in_addr giaddr

Definition at line 75 of file dhclient.c.

◆ iaddr_any

struct iaddr iaddr_any = { 4, { 0, 0, 0, 0 } }

Definition at line 72 of file dhclient.c.

◆ iaddr_broadcast

struct iaddr iaddr_broadcast = { 4, { 255, 255, 255, 255 } }

Definition at line 71 of file dhclient.c.

◆ inaddr_any

struct in_addr inaddr_any

Definition at line 73 of file dhclient.c.

◆ interfaces_requested

int interfaces_requested = 0

Definition at line 69 of file dhclient.c.

◆ leaseFile

FILE* leaseFile = NULL

Definition at line 3840 of file dhclient.c.

◆ leases_written

int leases_written = 0

Definition at line 3841 of file dhclient.c.

◆ local_port

u_int16_t local_port = 0

Definition at line 92 of file dhclient.c.

◆ max_lease_time

TIME max_lease_time = 86400

Definition at line 55 of file dhclient.c.

◆ mockup_relay

char* mockup_relay = NULL

Definition at line 111 of file dhclient.c.

◆ no_daemon

int no_daemon = 0

Definition at line 97 of file dhclient.c.

◆ no_pid_file

isc_boolean_t no_pid_file = ISC_FALSE

Definition at line 65 of file dhclient.c.

◆ nowait

int nowait = 0

Definition at line 102 of file dhclient.c.

◆ onetry

int onetry = 0

Definition at line 100 of file dhclient.c.

◆ path_dhclient_conf

const char* path_dhclient_conf = _PATH_DHCLIENT_CONF

Definition at line 57 of file dhclient.c.

◆ path_dhclient_db

const char* path_dhclient_db = NULL

Definition at line 58 of file dhclient.c.

◆ path_dhclient_duid

const char* path_dhclient_duid = NULL

Definition at line 62 of file dhclient.c.

◆ path_dhclient_pid

const char* path_dhclient_pid = NULL

Definition at line 59 of file dhclient.c.

◆ path_dhclient_script

char* path_dhclient_script = path_dhclient_script_array

Definition at line 61 of file dhclient.c.

◆ progname

char* progname = NULL

Definition at line 113 of file dhclient.c.

◆ quiet

int quiet = 1

Definition at line 101 of file dhclient.c.

◆ remote_port

u_int16_t remote_port = 0

Definition at line 93 of file dhclient.c.

◆ require_all_ias

int require_all_ias = 0

Definition at line 107 of file dhclient.c.

◆ scriptFile

FILE* scriptFile

Definition at line 4445 of file dhclient.c.

◆ scriptName

char scriptName[256]

Definition at line 4444 of file dhclient.c.

◆ sockaddr_broadcast

struct sockaddr_in sockaddr_broadcast

Definition at line 74 of file dhclient.c.

◆ stateless

int stateless = 0

Definition at line 103 of file dhclient.c.

◆ std_dhcid

int std_dhcid = 0

Definition at line 79 of file dhclient.c.

◆ wanted_ia_na

int wanted_ia_na = -1

Definition at line 104 of file dhclient.c.

◆ wanted_ia_pd

int wanted_ia_pd = 0

Definition at line 106 of file dhclient.c.

◆ wanted_ia_ta

int wanted_ia_ta = 0

Definition at line 105 of file dhclient.c.

Macros

Functions

Variables

Macro Definition Documentation

◆ ASSERT_STATE

Function Documentation

◆ asprintf()

◆ bind_lease()

◆ bootp()

◆ check_collection()

◆ classify()

◆ client_envadd()

◆ client_location_changed()

◆ client_option_envadd()

◆ commit_leases()

◆ cons_agent_information_options()

◆ db_startup()

◆ destroy_client_lease()

◆ dhclient_interface_discovery_hook()

◆ dhclient_interface_shutdown_hook()

◆ dhclient_interface_startup_hook()

◆ dhcp()

◆ dhcp_option_ev_name()

◆ dhcp_set_control_state()

◆ dhcpack()

◆ dhcpnak()

◆ dhcpoffer()

◆ dhcpv4_client_assignments()

◆ do_release()

◆ find_class()

◆ find_subnet()

◆ form_duid()

◆ go_daemon()

◆ main()

◆ make_client_options()

◆ make_decline()

◆ make_discover()

◆ make_release()

◆ make_request()

◆ packet_to_lease()

◆ parse_agent_information_option()

◆ read_uuid()

◆ rewrite_client_leases()

◆ run_stateless()

◆ script_go()

◆ script_init()

◆ script_write_params()

◆ script_write_requested()

◆ send_decline()

◆ send_discover()

◆ send_release()

◆ send_request()

◆ state_bound()

◆ state_init()

◆ state_panic()

◆ state_reboot()

◆ state_selecting()

◆ state_stop()

◆ unbill_class()

◆ unhexchar()

◆ write_client6_lease()

◆ write_client_lease()

◆ write_client_pid_file()

◆ write_host()

◆ write_lease()

◆ write_lease_option()

Variable Documentation

◆ address_prefix_len

◆ bootp_broadcast_always

◆ client_env

◆ client_env_count

◆ dad_wait_time

◆ default_duid

◆ default_lease_time

◆ default_requested_options

◆ dhcp_max_agent_option_packet_length

◆ duid_type

◆ duid_v4

◆ giaddr

◆ iaddr_any