dhcp/dhcp-3.0.5-libdhcp4client.patch

--- dhcp-3.0.5/client/dhclient.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/client/dhclient.c	2007-02-02 15:29:15.000000000 -0500
@@ -78,7 +78,9 @@
 int extended_option_environment = 0;
 #endif
 int bootp_broadcast_always = 0;
-
+#ifdef LIBDHCP
+FILE *leaseFile=0;
+#endif
 static void usage PROTO ((void));
 
 void do_release(struct client_state *);
@@ -89,10 +91,58 @@
 
 extern u_int32_t default_requested_options[];
 
-int main (argc, argv, envp)
+#ifdef LIBDHCP
+#include "libdhcp_control.h"
+LIBDHCP_Control *libdhcp_control;
+static void libdhcp_dispatch(void)
+{
+    struct timeval tv={0,0}, *tvp;
+    isc_result_t status;
+
+    /* Wait for a packet, or a timeout, or libdhcp being finished */
+    do {
+	tvp = process_outstanding_timeouts (&tv);	
+	status = omapi_one_dispatch (0, tvp);
+	if ( libdhcp_control 
+	   &&( (status == ISC_R_TIMEDOUT)
+	     ||(libdhcp_control->timeout
+	       &&( time(0L) >= 
+	           ( libdhcp_control->timeout 
+	            +libdhcp_control->now
+	           )
+	         )
+	       )
+	     )
+	   )
+	{
+	    if( libdhcp_control -> callback )
+		libdhcp_control -> callback
+		    ( libdhcp_control, DHC_TIMEDOUT, 0L );
+	    break;
+	}
+    } while 
+      ( (status != ISC_R_TIMEDOUT) 
+      &&( (!libdhcp_control)
+        ||(!(libdhcp_control->finished))
+	)
+      );
+}
+
+extern void omapi_free_all_pointers(void);
+__attribute__ ((visibility("default")))
+int dhcpv4_client
+(libdhcp_ctl, argc, argv, envp)
+LIBDHCP_Control *libdhcp_ctl;
+#else
+int main
+(argc, argv, envp)
+#endif
 	int argc;
 	char **argv, **envp;
 {
+#ifdef LIBDHCP
+        libdhcp_control = libdhcp_ctl;
+#endif
 	int i;
 	struct servent *ent;
 	struct interface_info *ip;
@@ -105,7 +155,6 @@
 	omapi_object_t *listener;
 	isc_result_t result;
 	int persist = 0;
-	int omapi_port;
 	int no_dhclient_conf = 0;
 	int no_dhclient_db = 0;
 	int no_dhclient_pid = 0;
@@ -119,7 +168,7 @@
 	int timeout_arg = 0;
 	char *arg_conf = 0L;
 	int arg_conf_len=0;
-
+#ifndef LIBDHCP
 	/* Make sure we have stdin, stdout and stderr. */
 	i = open ("/dev/null", O_RDWR);
 	if (i == 0)
@@ -140,7 +189,7 @@
 #if !(defined (DEBUG) || defined (SYSLOG_4_2) || defined (__CYGWIN32__))
 	setlogmask (LOG_UPTO (LOG_INFO));
 #endif	
-
+#endif
 	/* Set up the OMAPI. */
 	status = omapi_init ();
 	if (status != ISC_R_SUCCESS)
@@ -469,9 +518,12 @@
 		log_fatal("dhclient(%u) is already running - exiting. ", dhcpid);
 		return(1);
 	    }	    
-	}	
+	}
+#ifdef LIBDHCP
+	if ( libdhcp_control && (libdhcp_control->capability & DHCP_USE_PID_FILE) )
+#endif
 	write_client_pid_file();
-
+#ifndef LIBDHCP
 	if (!quiet) {
 		log_info ("%s %s", message, DHCP_VERSION);
 		log_info (copyright);
@@ -480,7 +532,7 @@
 		log_info ("%s", "");
 	} else
 		log_perror = 0;
-
+#endif
 	/* If we're given a relay agent address to insert, for testing
 	   purposes, figure out what it is. */
 	if (relay) {
@@ -767,12 +819,18 @@
 		arg_conf_len = 0L;
 	}
 		
+#ifdef LIBDHCP
+	if ( libdhcp_control && (libdhcp_control->capability & DHCP_USE_LEASE_DATABASE))
+	{
+#endif
 	/* Parse the lease database. */
 	read_client_leases ();
 
 	/* Rewrite the lease database... */
 	rewrite_client_leases ();
-
+#ifdef LIBDHCP
+	}
+#endif
 	/* XXX */
 /* 	config_counter(&snd_counter, &rcv_counter); */
 
@@ -790,7 +848,7 @@
 		if (!persist) {
 			/* Nothing more to do. */
 			log_info ("No broadcast interfaces found - exiting.");
-			exit (0);
+			return (0);
 		}
 	} else if (!release_mode) {
 		/* Call the script with the list of interfaces. */
@@ -885,7 +943,7 @@
 	dmalloc_longterm = dmalloc_outstanding;
 	dmalloc_outstanding = 0;
 #endif
-
+#ifndef LIBDHCP
 	/* If we're not supposed to wait before getting the address,
 	   don't. */
 	if (nowait)
@@ -898,7 +956,125 @@
 
 	/* Start dispatching packets and timeouts... */
 	dispatch ();
+#else
+	if (  libdhcp_control )
+	{
+	   if ( libdhcp_control->timeout ) 
+	       libdhcp_control->now = time(0L);
+	   else
+	       libdhcp_control->now = 0;
+	}
+	libdhcp_dispatch();
+
+	/* libdhcp is finished with us. */
+
+	/* close all file descriptors:  */
+	for (ip = interfaces; ip; ip = ip -> next) {
+	    shutdown( ip -> wfdesc, SHUT_RDWR );
+	    close(ip -> wfdesc);
+	    if( ip -> rfdesc != ip -> wfdesc )
+		close(ip -> rfdesc);
+	}
+	if( fallback_interface != 0 )
+	{
+	    ip = fallback_interface;
+	    shutdown( ip -> wfdesc, SHUT_RDWR );
+	    close(ip -> wfdesc);
+	    if( ip -> rfdesc != ip -> wfdesc )
+		close(ip -> rfdesc);
+	}
+	if (leaseFile)
+	    fclose (leaseFile);
+	closelog();
+	
+	char *current_pid_file = _PATH_DHCLIENT_PID;
+
+	/* Free ALL allocated memory: */
+	omapi_free_all_pointers();
 
+	/* Re-Initialize globals: */
+	client_env = 0;
+	client_env_count = 0;
+	default_lease_time = 43200;
+
+	dhcp_max_agent_option_packet_length = 0;
+	extended_option_environment = 0;
+	iaddr_any.len = 4;
+	memset(&(iaddr_any.iabuf[0]),'\0',4);
+	iaddr_broadcast.len = 4;
+	memset(&(iaddr_broadcast.iabuf[0]),0xff,4);
+	interfaces_requested = 0;
+	leaseFile = 0;
+
+	libdhcp_control = 0;
+	
+	local_port = 0;
+	no_daemon=0;
+	nowait=0;
+	onetry=0;
+	quiet=0;
+	max_lease_time = 86400;
+	path_dhclient_conf = _PATH_DHCLIENT_CONF;
+	path_dhclient_db = _PATH_DHCLIENT_DB;	
+	path_dhclient_pid = _PATH_DHCLIENT_PID;
+	strcpy(&(path_dhclient_script_array[0]), _PATH_DHCLIENT_SCRIPT);
+	path_dhclient_script = path_dhclient_script_array;
+	remote_port = 0;
+	resolver_inited = 0;
+	new_option_info_tree = 0;
+	log_isc_blurb = 0;
+	log_perror = 1;
+	global_scope = 0L;
+	root_group = 0L;
+	group_name_hash = 0L;
+	interfaces = 0L;
+	dummy_interfaces = 0L;
+	fallback_interface = 0L;
+extern int have_setup_fallback;
+        have_setup_fallback=0;
+	quiet_interface_discovery=1;
+#ifndef LIBDHCP
+	timeouts = 0L;
+#endif
+	dhcp_type_interface=0L;
+	interface_vector = 0L;
+	interface_count =0;
+	interface_max = 0;
+	name_servers = 0;
+	domains = 0;
+	dhcp_type_interface=0L;
+	dhcp_type_group=0L;
+	dhcp_type_shared_network=0L;
+	dhcp_type_control=0L;
+	memset(&dhcp_universe, '\0', sizeof(struct universe));
+	memset(&nwip_universe, '\0', sizeof(struct universe));
+	memset(&fqdn_universe, '\0', sizeof(struct universe));
+	universe_hash = 0;
+	universes=0;
+	universe_count=0;
+	universe_max=0;
+	config_universe = 0;	
+extern struct hash_bucket *free_hash_buckets;
+	free_hash_buckets=0L;
+extern struct dhcp_packet *dhcp_free_list;
+	dhcp_free_list = 0L;
+extern struct packet *packet_free_list;
+	packet_free_list = 0L;
+extern struct binding_value *free_binding_values;
+	free_binding_values=0L;
+extern struct expression *free_expressions;
+	free_expressions=0L;
+extern struct option_cache *free_option_caches;
+	free_option_caches=0L;
+extern  struct packet *free_packets;
+	free_packets=0L;
+extern  pair free_pairs;
+	free_pairs=0L;
+extern omapi_io_object_t omapi_io_states;
+        memset(&omapi_io_states, '\0', sizeof(omapi_io_states));
+	dhcp_control_object=0L;
+	unlink(current_pid_file);
+#endif
 	/*NOTREACHED*/
 	return 0;
 }
@@ -1091,7 +1267,6 @@
 			picked = lp;
 			picked -> next = (struct client_lease *)0;
 		} else {
-		      freeit:
 			destroy_client_lease (lp);
 		}
 	}
@@ -1149,7 +1324,6 @@
 	struct client_lease *lease;
 	struct option_cache *oc;
 	struct data_string ds;
-	int i;
 	
 	/* If we're not receptive to an offer right now, or if the offer
 	   has an unrecognizable transaction id, then just drop it. */
@@ -1294,15 +1468,30 @@
 	client -> new -> rebind += cur_time;
 	if (client -> new -> rebind < cur_time)
 		client -> new -> rebind = TIME_MAX;
+#ifdef LIBDHCP
+	/* We need the server's siaddr for the 'bootServer'
+         * pump option 
+	 */
+	u_int32_t set_siaddr = 0;	
+
+	set_siaddr = client -> packet.siaddr.s_addr ;
+	     
+	client->packet.siaddr.s_addr = packet->raw->siaddr.s_addr ;
+#endif
 
 	bind_lease (client);
+
+
+#ifdef LIBDHCP
+
+	client -> packet.siaddr.s_addr = set_siaddr ;
+#endif
+	
 }
 
 void bind_lease (client)
 	struct client_state *client;
 {
-	struct interface_info *ip = client -> interface;
-
 	/* Remember the medium. */
 	client -> new -> medium = client -> medium;
 
@@ -1333,6 +1522,9 @@
 		return;
 	}
 
+#ifdef LIBDHCP
+	if ( libdhcp_control && (libdhcp_control->capability & DHCP_USE_LEASE_DATABASE))
+#endif
 	/* Write out the new lease. */
 	write_client_lease (client, client -> new, 0, 0);
 
@@ -1368,7 +1560,6 @@
 	void *cpp;
 {
 	struct client_state *client = cpp;
-	int i;
 	struct option_cache *oc;
 	struct data_string ds;
 
@@ -1411,7 +1602,6 @@
 	void *cpp;
 {
 	struct client_state *client = cpp;
-	int i;
 
 	/* Cancel all timeouts. */
 	cancel_timeout (state_selecting, client);
@@ -1434,13 +1624,13 @@
 {
 	return 0;
 }
-
+#ifndef LIBDHCP
 int write_lease (lease)
 	struct lease *lease;
 {
 	return 0;
 }
-
+#endif
 int write_host (host)
 	struct host_decl *host;
 {
@@ -1524,8 +1714,6 @@
 	int i;
 	int stop_selecting;
 	const char *name = packet -> packet_type ? "DHCPOFFER" : "BOOTREPLY";
-	struct iaddrlist *ap;
-	struct option_cache *oc;
 	char obuf [1024];
 	
 #ifdef DEBUG_PACKET
@@ -2013,6 +2201,10 @@
 	   tell the shell script that we failed to allocate an address,
 	   and try again later. */
 	if (onetry) {
+#ifdef LIBDHCP
+	    script_init (client, "FAIL", (struct string_list *)0);
+	    return;
+#endif
 		if (!quiet)
 			log_info ("Unable to obtain a lease on first try.%s",
 				  "  Exiting.");
@@ -2344,7 +2536,6 @@
 	struct client_lease *lease;
 {
 	unsigned char discover = DHCPDISCOVER;
-	int i;
 	struct option_state *options = (struct option_state *)0;
 
 	memset (&client -> packet, 0, sizeof (client -> packet));
@@ -2409,9 +2600,6 @@
 	struct client_lease *lease;
 {
 	unsigned char request = DHCPREQUEST;
-	int i, j;
-	unsigned char *tmp, *digest;
-	unsigned char *old_digest_loc;
 	struct option_cache *oc;
 
 	memset (&client -> packet, 0, sizeof (client -> packet));
@@ -2500,7 +2688,6 @@
 	struct client_lease *lease;
 {
 	unsigned char decline = DHCPDECLINE;
-	int i;
 	struct option_cache *oc;
 
 	struct option_state *options = (struct option_state *)0;
@@ -2557,7 +2744,6 @@
 	struct client_lease *lease;
 {
 	unsigned char request = DHCPRELEASE;
-	int i;
 	struct option_cache *oc;
 
 	struct option_state *options = (struct option_state *)0;
@@ -2614,8 +2800,6 @@
 void destroy_client_lease (lease)
 	struct client_lease *lease;
 {
-	int i;
-
 	if (lease -> server_name)
 		dfree (lease -> server_name, MDL);
 	if (lease -> filename)
@@ -2624,7 +2808,9 @@
 	free_client_lease (lease, MDL);
 }
 
+#ifndef LIBDHCP
 FILE *leaseFile;
+#endif
 
 void rewrite_client_leases ()
 {
@@ -2678,8 +2864,6 @@
 {
 	const char *name, *dot;
 	struct data_string ds;
-	int status;
-	struct client_state *client;
 
 	memset (&ds, 0, sizeof ds);
 
@@ -2710,9 +2894,7 @@
 	int i;
 	struct tm *t;
 	static int leases_written;
-	struct option_cache *oc;
 	struct data_string ds;
-	pair *hash;
 	int errors = 0;
 	char *s;
 
@@ -2992,8 +3174,6 @@
 	int i;
 	struct data_string data;
 	struct option_cache *oc;
-	pair *hash;
-	char *s, *t;
 	struct envadd_state es;
 
 	es.client = client;
@@ -3071,16 +3251,60 @@
 int script_go (client)
 	struct client_state *client;
 {
-	int rval;
+    struct string_list *sp;
+
+#ifdef LIBDHCP
+    if ( libdhcp_control && libdhcp_control->callback )
+    {
+	char *reason="";
+	for (sp = client->env; sp; sp = sp -> next) 
+	    if( strncmp(sp->string, "reason=", 7) == 0 )
+	    {
+		reason = sp->string + 7;
+		break;
+	    }
+	(*libdhcp_control->callback) 
+	(   libdhcp_control, 
+	     (strcmp(reason,"NBI")==0)
+	     ? DHC4_NBI
+	     :(strcmp(reason,"PREINIT")==0)
+	      ? DHC4_PREINIT
+	      :(strcmp(reason,"BOUND")==0)
+	       ? DHC4_BOUND
+	       :(strcmp(reason,"RENEW")==0)
+	        ? DHC4_RENEW
+	        :(strcmp(reason,"REBOOT")==0)
+	         ? DHC4_REBOOT
+	         :(strcmp(reason,"REBIND")==0)
+	          ? DHC4_REBIND
+	          :(strcmp(reason,"STOP")==0)
+	           ? DHC4_STOP
+	           :(strcmp(reason,"MEDIUM")==0)
+	            ? DHC4_MEDIUM
+	            :(strcmp(reason,"TIMEOUT")==0)
+	             ? DHC4_TIMEOUT
+	             :(strcmp(reason,"FAIL")==0)
+	              ? DHC4_FAIL
+	              :(strcmp(reason,"EXPIRE")==0)
+	               ? DHC4_EXPIRE
+	               :(strcmp(reason,"RELEASE")==0)
+			? DHC4_RELEASE
+	                : DHC4_NBI,	                
+	    client
+	);
+	if ( libdhcp_control->decline )
+	    return 1;
+    }
+    return 0;
+#else
 	char *scriptName;
 	char *argv [2];
 	char **envp;
-	char *epp [3];
 	char reason [] = "REASON=NBI";
 	static char client_path [] = CLIENT_PATH;
 	int i;
-	struct string_list *sp, *next;
 	int pid, wpid, wstatus;
+	struct string_list *next;
 
 	if (client)
 		scriptName = client -> config -> script_name;
@@ -3146,6 +3370,7 @@
 	GET_TIME (&cur_time);
 	return (WIFEXITED (wstatus) ?
 		WEXITSTATUS (wstatus) : -WTERMSIG (wstatus));
+#endif
 }
 
 void client_envadd (struct client_state *client,
@@ -3153,7 +3378,7 @@
 {
 	char spbuf [1024];
 	char *s;
-	unsigned len, i;
+	unsigned len;
 	struct string_list *val;
 	va_list list;
 
@@ -3236,6 +3461,9 @@
 
 	/* Don't become a daemon if the user requested otherwise. */
 	if (no_daemon) {
+#ifdef LIBDHCP
+	    if ( libdhcp_control && (libdhcp_control->capability & DHCP_USE_PID_FILE ) )
+#endif
 		write_client_pid_file ();
 		return;
 	}
@@ -3244,7 +3472,9 @@
 	if (state)
 		return;
 	state = 1;
-
+#ifdef LIBDHCP
+	return;
+#endif
 	/* Stop logging to stderr... */
 	log_perror = 0;
 
@@ -3588,7 +3818,7 @@
 
 isc_result_t client_dns_update (struct client_state *client, int addp, int ttl)
 {
-	struct data_string ddns_fqdn, ddns_fwd_name,
+	struct data_string ddns_fwd_name,
 	       ddns_dhcid, client_identifier;
 	struct option_cache *oc;
 	int ignorep;
--- dhcp-3.0.5/common/alloc.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/common/alloc.c	2007-02-02 15:27:55.000000000 -0500
@@ -48,7 +48,6 @@
 	const char *file;
 	int line;
 {
-	int size;
 	struct option_chain_head *h;
 
 	if (!ptr) {
@@ -109,7 +108,6 @@
 	const char *file;
 	int line;
 {
-	int i;
 	struct option_chain_head *option_chain_head;
 	pair car, cdr;
 
@@ -161,7 +159,6 @@
 	const char *file;
 	int line;
 {
-	int size;
 	struct group *g;
 
 	if (!ptr) {
@@ -222,7 +219,6 @@
 	const char *file;
 	int line;
 {
-	int i;
 	struct group *group;
 
 	if (!ptr || !*ptr) {
@@ -745,8 +741,6 @@
 	const char *file;
 	int line;
 {
-	struct buffer *bp;
-
 	if (!ptr) {
 		log_error ("%s(%d): null pointer", file, line);
 #if defined (POINTER_DEBUG)
@@ -834,8 +828,6 @@
 	const char *file;
 	int line;
 {
-	struct dns_host_entry *bp;
-
 	if (!ptr || !*ptr) {
 		log_error ("%s(%d): null pointer", file, line);
 #if defined (POINTER_DEBUG)
@@ -1016,9 +1008,11 @@
 	rc_register (file, line, ptr, bp, bp -> refcnt, 0, RC_MISC);
 	return 1;
 }
-
+#ifdef LIBDHCP
+struct packet *free_packets;
+#else
 static struct packet *free_packets;
-
+#endif
 #if defined (DEBUG_MEMORY_LEAKAGE) || \
 		defined (DEBUG_MEMORY_LEAKAGE_ON_EXIT)
 void relinquish_free_packets ()
@@ -1037,7 +1031,6 @@
 	const char *file;
 	int line;
 {
-	int size;
 	struct packet *p;
 
 	if (!ptr) {
@@ -1157,7 +1150,6 @@
 	const char *file;
 	int line;
 {
-	int size;
 	struct dns_zone *d;
 
 	if (!ptr) {
--- dhcp-3.0.5/common/discover.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/common/discover.c	2007-02-02 15:27:55.000000000 -0500
@@ -120,28 +120,30 @@
    For each interface that's of type INET and not the loopback interface,
    register that interface with the network I/O software, figure out what
    subnet it's on, and add it to the list of interfaces. */
-
+#ifdef LIBDHCP
+int have_setup_fallback = 0;
+#endif
 void discover_interfaces (state)
 	int state;
 {
-	struct interface_info *tmp, *ip;
+	struct interface_info *tmp;
 	struct interface_info *last, *next;
 	char buf [2048];
 	struct ifconf ic;
 	struct ifreq ifr;
 	int i;
 	int sock;
-	int address_count = 0;
 	struct subnet *subnet;
-	struct shared_network *share;
 	struct sockaddr_in foo;
 	int ir;
 	struct ifreq *tif;
 #ifdef ALIAS_NAMES_PERMUTED
 	char *s;
 #endif
-	isc_result_t status;
+#ifndef LIBDHCP
 	static int setup_fallback = 0;
+#endif
+	isc_result_t status;
 	int wifcount = 0;
 
 	/* Create an unbound datagram socket to do the SIOCGIFADDR ioctl on. */
@@ -435,7 +437,6 @@
 	for (tmp = interfaces; tmp; tmp = tmp -> next) {
 		struct ifreq ifr;
 		struct sockaddr sa;
-		int b, sk;
 		
 		if (!tmp -> ifp) {
 			/* Make up an ifreq structure. */
@@ -694,12 +695,17 @@
 		log_info ("%s", "");
 		log_fatal ("Not configured to listen on any interfaces!");
 	}
-
+#ifdef LIBDHCP
+	if (!have_setup_fallback) {
+		have_setup_fallback = 1;
+		maybe_setup_fallback ();
+	}
+#else
 	if (!setup_fallback) {
 		setup_fallback = 1;
 		maybe_setup_fallback ();
 	}
-
+#endif
 #if defined (HAVE_SETFD)
 	if (fallback_interface) {
 	    if (fcntl (fallback_interface -> rfdesc, F_SETFD, 1) < 0)
@@ -815,7 +821,6 @@
 {
 	struct interface_info *interface;
 	isc_result_t status;
-	int foo;
 
 	if (h -> type != dhcp_type_interface)
 		return ISC_R_INVALIDARG;
@@ -858,7 +863,6 @@
 					 const char *file, int line)
 {
 	struct interface_info *interface;
-	isc_result_t status;
 
 	if (h -> type != dhcp_type_interface)
 		return ISC_R_INVALIDARG;
@@ -888,8 +892,6 @@
 					    const char *name, va_list ap)
 {
 	struct interface_info *ip, *interface;
-	struct client_config *config;
-	struct client_state *client;
 	isc_result_t status;
 
 	if (h -> type != dhcp_type_interface)
--- dhcp-3.0.5/common/lpf.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/common/lpf.c	2007-02-02 15:27:55.000000000 -0500
@@ -89,8 +89,6 @@
 		struct sockaddr common;
 	} sa;
 	struct ifreq ifr;
-	char filename[50];
-	int b;
 
 	/* Make an LPF socket. */
 	if ((sock = socket(PF_PACKET, SOCK_RAW,
@@ -249,6 +247,7 @@
 	struct interface_info *info;
 {
 	struct sock_fprog p;
+	memset(&p,'\0', sizeof(struct sock_fprog));
 
 	/* Set up the bpf filter program structure.    This is defined in
 	   bpf.c */
@@ -358,7 +357,6 @@
 	struct sockaddr_in *from;
 	struct hardware *hfrom;
 {
-	int nread;
 	int length = 0;
 	int offset = 0;
 	int nocsum = 0;
--- dhcp-3.0.5/common/options.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/common/options.c	2007-02-02 15:28:51.000000000 -0500
@@ -2153,6 +2153,7 @@
 	return 1;
 }
 
+__attribute__ ((visibility("default")))
 void option_space_foreach (struct packet *packet, struct lease *lease,
 			   struct client_state *client_state,
 			   struct option_state *in_options,
--- dhcp-3.0.5/common/dispatch.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/common/dispatch.c	2007-02-02 15:29:44.000000000 -0500
@@ -358,6 +358,7 @@
 #endif
 }
 
+__attribute__ ((visibility("default")))
 void relinquish_timeouts ()
 {
 #ifdef LIBDHCP
--- dhcp-3.0.5/common/tree.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/common/tree.c	2007-02-02 15:30:49.000000000 -0500
@@ -40,7 +40,7 @@
 #include "dhcpd.h"
 #include <omapip/omapip_p.h>
 
-struct binding_scope *global_scope;
+struct binding_scope __attribute__ ((visibility("default"))) *global_scope;
 
 static int do_host_lookup PROTO ((struct data_string *,
 				  struct dns_host_entry *));
@@ -2615,6 +2615,7 @@
    result of that evaluation.   There should never be both an expression
    and a valid data_string. */
 
+__attribute__ ((visibility("default")))
 int evaluate_option_cache (result, packet, lease, client_state,
 			   in_options, cfg_options, scope, oc, file, line)
 	struct data_string *result;
--- dhcp-3.0.5/dst/hmac_link.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/dst/hmac_link.c	2007-02-02 15:27:55.000000000 -0500
@@ -38,6 +38,10 @@
 
 #include "dst_internal.h"
 
+#ifdef LIBDHCP
+extern void* dmalloc(size_t,char *,int);
+#endif
+
 #ifdef USE_MD5
 # include "md5.h"
 # ifndef _MD5_H_
@@ -86,7 +90,11 @@
 	MD5_CTX *ctx = NULL;
 
 	if (mode & SIG_MODE_INIT) 
+#ifdef LIBDHCP
+		ctx = (MD5_CTX *) dmalloc(sizeof(*ctx),__FILE__,__LINE__);
+#else
 		ctx = (MD5_CTX *) malloc(sizeof(*ctx));
+#endif
 	else if (context)
 		ctx = (MD5_CTX *) *context;
 	if (ctx == NULL) 
@@ -153,7 +161,11 @@
 	MD5_CTX *ctx = NULL;
 
 	if (mode & SIG_MODE_INIT) 
-		ctx = (MD5_CTX *) malloc(sizeof(*ctx));
+#ifdef LIBDHCP
+		ctx = (MD5_CTX *) dmalloc(sizeof(*ctx),__FILE__,__LINE__);
+#else
+	        ctx = (MD5_CTX *) malloc(sizeof(*ctx));
+#endif
 	else if (context)
 		ctx = (MD5_CTX *) *context;
 	if (ctx == NULL) 
@@ -217,8 +229,11 @@
 
 	if (dkey == NULL || key == NULL || keylen < 0)
 		return (-1);
-
+#ifdef  LIBDHCP
+	if ((hkey = (HMAC_Key *) dmalloc(sizeof(HMAC_Key),__FILE__,__LINE__)) == NULL)
+#else
 	if ((hkey = (HMAC_Key *) malloc(sizeof(HMAC_Key))) == NULL)
+#endif
 		  return (-2);
 
 	memset(hkey->hk_ipad, 0, sizeof(hkey->hk_ipad));
@@ -347,7 +362,11 @@
 	if (eol == NULL)
 		return (-4);
 	len = eol - p;
+#ifdef LIBDHCP
+	tmp = dmalloc(len + 2,__FILE__,__LINE__);
+#else
 	tmp = malloc(len + 2);
+#endif
 	memcpy(tmp, p, len);
 	*(tmp + len) = 0x0;
 	key_len = b64_pton((char *)tmp, key, HMAC_LEN+1);	/* see above */
@@ -439,8 +458,11 @@
 		return(0);
 	
 	len = size > 64 ? 64 : size;
+#ifdef LIBDHCP
+	buff = dmalloc(len+8,__FILE__,__LINE__);
+#else
 	buff = malloc(len+8);
-
+#endif
 	n = dst_random(DST_RAND_SEMI, len, buff);
 	n += dst_random(DST_RAND_KEY, len, buff);
 	if (n <= len) {	/* failed getting anything */
@@ -463,7 +485,11 @@
 {
 	if (dst_t_func[KEY_HMAC_MD5] != NULL)
 		return (1);
+#ifdef LIBDHCP
+	dst_t_func[KEY_HMAC_MD5] = dmalloc(sizeof(struct dst_func),__FILE__,__LINE__);
+#else
 	dst_t_func[KEY_HMAC_MD5] = malloc(sizeof(struct dst_func));
+#endif
 	if (dst_t_func[KEY_HMAC_MD5] == NULL)
 		return (0);
 	memset(dst_t_func[KEY_HMAC_MD5], 0, sizeof(struct dst_func));
--- dhcp-3.0.5/dst/md5_dgst.c.libdhcp4client	2004-06-14 14:50:06.000000000 -0400
+++ dhcp-3.0.5/dst/md5_dgst.c	2007-02-02 15:27:55.000000000 -0500
@@ -65,7 +65,7 @@
 
 #ifdef USE_MD5 /* Added by ogud@tis.com 1998/1/26 */
 
-const char *MD5_version="MD5 part of SSLeay 0.8.1 19-Jul-1997";
+const char *MD5_version ="MD5 part of SSLeay 0.8.1 19-Jul-1997";
 
 /* Implemented from RFC1321 The MD5 Message-Digest Algorithm
  */
--- dhcp-3.0.5/omapip/alloc.c.libdhcp4client	2006-02-22 17:43:27.000000000 -0500
+++ dhcp-3.0.5/omapip/alloc.c	2007-02-02 15:27:55.000000000 -0500
@@ -40,6 +40,41 @@
 
 #include <omapip/omapip_p.h>
 
+#ifdef LIBDHCP
+/* OK, we need a quick and dirty way of freeing all memory used by libdhcp. 
+   All pointers will be stored in a glibc tree on alloc, and removed on free.
+   This is not too expensive for light single-call library use.
+*/
+#include <search.h>  
+extern void tdestroy (void *root, void (*free_node)(void *nodep));
+static void *all_pointers=0L;
+static int ptr_comparator( const void *p1, const void *p2 )
+{
+    return
+	(  (p1 == p2) 
+	   ? 0
+	   :( (p1 > p2)
+	      ? 1
+	      : -1
+	    )
+	);
+}
+static void record_pointer( void *ptr )
+{
+    tsearch(ptr, &(all_pointers), ptr_comparator);
+}
+static void forget_pointer( void *ptr )
+{
+    tdelete(ptr, &(all_pointers), ptr_comparator);
+}
+void omapi_free_all_pointers(void)
+{
+    if( all_pointers != 0L )
+	tdestroy(all_pointers, free);
+    all_pointers = 0L;
+}
+#endif
+
 #if defined (DEBUG_MEMORY_LEAKAGE) || defined (DEBUG_MALLOC_POOL) || \
 		defined (DEBUG_MEMORY_LEAKAGE_ON_EXIT)
 struct dmalloc_preamble *dmalloc_list;
@@ -66,7 +101,6 @@
 {
 	unsigned char *foo;
 	unsigned len;
-	int i;
 	VOIDPTR *bar;
 #if defined (DEBUG_MEMORY_LEAKAGE) || defined (DEBUG_MALLOC_POOL) || \
 		defined (DEBUG_MEMORY_LEAKAGE_ON_EXIT)
@@ -78,7 +112,9 @@
 		return (VOIDPTR)0;
 
 	foo = malloc(len);
-
+#ifdef LIBDHCP
+	record_pointer(foo);
+#endif
 	if (!foo)
 		return (VOIDPTR)0;
 	bar = (VOIDPTR)(foo + DMDOFFSET);
@@ -200,6 +236,9 @@
 		     0, (unsigned char *)ptr + DMDOFFSET, 0, 1, RC_MALLOC);
 #endif
 	free (ptr);
+#ifdef LIBDHCP
+	forget_pointer(ptr);
+#endif
 }
 
 #if defined (DEBUG_MEMORY_LEAKAGE) || defined (DEBUG_MALLOC_POOL) || \
--- dhcp-3.0.5/omapip/dispatch.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/omapip/dispatch.c	2007-02-02 15:27:55.000000000 -0500
@@ -34,7 +34,7 @@
 
 #include <omapip/omapip_p.h>
 
-static omapi_io_object_t omapi_io_states;
+omapi_io_object_t omapi_io_states;
 TIME cur_time;
 
 OMAPI_OBJECT_ALLOC (omapi_io,
--- dhcp-3.0.5/omapip/errwarn.c.libdhcp4client	2007-02-02 15:27:55.000000000 -0500
+++ dhcp-3.0.5/omapip/errwarn.c	2007-02-02 15:27:55.000000000 -0500
@@ -39,6 +39,11 @@
 #include <omapip/omapip_p.h>
 #include <errno.h>
 
+#ifdef LIBDHCP
+#include <libdhcp_control.h>
+extern LIBDHCP_Control *libdhcp_control;
+#endif
+
 #ifdef DEBUG
 int log_perror = -1;
 #else
@@ -50,7 +55,9 @@
 void (*log_cleanup) (void);
 
 #define CVT_BUF_MAX 1023
+#ifndef LIBDHCP
 static char mbuf [CVT_BUF_MAX + 1];
+#endif
 static char fbuf [CVT_BUF_MAX + 1];
 
 /* Log an error message, then exit... */
@@ -60,6 +67,17 @@
   va_list list;
 
   do_percentm (fbuf, fmt);
+  
+#ifdef LIBDHCP
+  if ( libdhcp_control && (libdhcp_control->eh) )
+  {
+      va_start (list, fmt);
+      libdhcp_control->eh(libdhcp_control, LOG_FATAL, fbuf, list);
+      va_end(list);
+      libdhcp_control->finished = 1;
+      return;
+  }
+#else
 
   /* %Audit% This is log output. %2004.06.17,Safe%
    * If we truncate we hope the user can get a hint from the log.
@@ -108,6 +126,7 @@
   if (log_cleanup)
 	  (*log_cleanup) ();
   exit (1);
+#endif
 }
 
 /* Log an error message... */
@@ -118,6 +137,14 @@
 
   do_percentm (fbuf, fmt);
 
+#ifdef LIBDHCP
+  if ( libdhcp_control && libdhcp_control->eh )
+  {
+      va_start (list, fmt);
+      libdhcp_control->eh(libdhcp_control, LOG_ERR, fbuf, list);
+      va_end(list);
+  }
+#else
   /* %Audit% This is log output. %2004.06.17,Safe%
    * If we truncate we hope the user can get a hint from the log.
    */
@@ -134,7 +161,7 @@
 	  r=write (STDERR_FILENO, mbuf, strlen (mbuf));
 	  r=write (STDERR_FILENO, "\n", 1);
   }
-
+#endif
   return 0;
 }
 
@@ -146,6 +173,14 @@
 
   do_percentm (fbuf, fmt);
 
+#ifdef LIBDHCP
+  if ( libdhcp_control && libdhcp_control->eh )
+  {
+      va_start (list, fmt);
+      libdhcp_control->eh(libdhcp_control, LOG_INFO, fbuf, list);
+      va_end(list);
+  }
+#else
   /* %Audit% This is log output. %2004.06.17,Safe%
    * If we truncate we hope the user can get a hint from the log.
    */
@@ -162,7 +197,7 @@
 	  r=write (STDERR_FILENO, mbuf, strlen (mbuf));
 	  r=write (STDERR_FILENO, "\n", 1);
   }
-
+#endif
   return 0;
 }
 
@@ -173,7 +208,14 @@
   va_list list;
 
   do_percentm (fbuf, fmt);
-
+#ifdef LIBDHCP
+  if ( libdhcp_control && libdhcp_control->eh )
+  {
+      va_start (list, fmt);
+      libdhcp_control->eh(libdhcp_control, LOG_DEBUG, fbuf, list);
+      va_end(list);
+  }
+#else
   /* %Audit% This is log output. %2004.06.17,Safe%
    * If we truncate we hope the user can get a hint from the log.
    */
@@ -190,7 +232,7 @@
 	  r=write (STDERR_FILENO, mbuf, strlen (mbuf));
 	  r=write (STDERR_FILENO, "\n", 1);
   }
-
+#endif
   return 0;
 }
 
--- dhcp-3.0.5/configure.libdhcp4client	2004-09-10 17:02:30.000000000 -0400
+++ dhcp-3.0.5/configure	2007-02-02 15:27:55.000000000 -0500
@@ -246,7 +246,7 @@
 fi
 
 if [ x"$dirs" = x ]; then
-  dirs=". client server relay common omapip dhcpctl minires dst"
+  dirs=". client server relay common omapip dhcpctl minires dst libdhcp4client"
 fi
 
 for foo in $dirs; do
--- /dev/null	2007-02-02 08:56:33.488585704 -0500
+++ dhcp-3.0.5/libdhcp4client/Makefile.dist	2007-02-02 15:27:55.000000000 -0500
@@ -0,0 +1,128 @@
+# Makefile.dist for libdhcp4client
+#
+# We get the libdhcp4client library from the patched ISC source code.  We
+# rebuild key C files with -DLIBDHCP to turn on the library features we
+# need.  Normal build results in standard ISC code (i.e., not LIBDHCP
+# stuff enabled).  We then link together a static library and a shared
+# library with the new resulting objects.
+#
+# David Cantrell <dcantrell@redhat.com>
+
+# What version of ISC DHCP is this?
+VER   = $(shell grep DHCP_VERSION ../../includes/version.h | head -1 | cut -d '"' -f 2 | cut -d 'V' -f 2 | cut -d '-' -f 1)
+
+PROGS = libdhcp4client.a libdhcp4client-$(VER).so.0
+
+# NOTE: The ordering of these file lists is important!  We are using the
+# whole program optimization features of gcc, so the order matters here.
+
+# Source files shared by all objects
+COMMON_SRCS = client_clparse.c client_dhclient.c common_alloc.c common_bpf.c \
+              common_comapi.c common_conflex.c common_discover.c \
+              common_dispatch.c common_dns.c common_ethernet.c \
+              common_execute.c common_inet.c common_lpf.c common_memory.c \
+              common_options.c common_packet.c common_parse.c common_print.c \
+              common_socket.c common_tables.c common_tr.c common_tree.c \
+              dst_dst_api.c dst_base64.c dst_hmac_link.c dst_md5_dgst.c \
+              omapip_alloc.c omapip_array.c omapip_auth.c omapip_buffer.c \
+              omapip_connection.c omapip_convert.c omapip_dispatch.c \
+              omapip_errwarn.c omapip_handle.c omapip_hash.c \
+              omapip_listener.c omapip_mrtrace.c omapip_result.c \
+              omapip_support.c omapip_toisc.c omapip_trace.c
+
+# Source files for libdhcp4client.o
+CLIENT_SRCS = common_ctrace.c common_dlpi.c common_nit.c common_upf.c \
+              dst_dst_support.c dst_prandom.c omapip_generic.c \
+              omapip_message.c omapip_protocol.c
+
+# Source files for libres.o (minires)
+MINIRES_SRCS = minires_ns_date.c minires_ns_name.c minires_ns_parse.c \
+               minires_ns_samedomain.c minires_ns_sign.c minires_ns_verify.c \
+               minires_res_comp.c minires_res_findzonecut.c \
+               minires_res_init.c minires_res_mkquery.c \
+               minires_res_mkupdate.c minires_res_query.c minires_res_send.c \
+               minires_res_sendsigned.c minires_res_update.c
+
+HDRS = dhcp4client.h libdhcp_control.h
+SRCS = $(COMMON_SRCS) $(CLIENT_SRCS)
+OBJS = $(SRCS:.c=.o)
+
+INCLUDES = -I$(TOP) -I$(TOP)/includes -I$(TOP)/dst -I.
+CFLAGS   = $(DEBUG) $(PREDEFINES) $(INCLUDES) $(COPTS) \
+           -DCLIENT_PATH=${CLIENT_PATH} -DLIBDHCP -DUSE_MD5 \
+           -fvisibility=hidden
+
+all: $(PROGS)
+
+install: all
+	install -p -m 0755 -D libdhcp4client-$(VER).so.0 $(DESTDIR)$(LIBDIR)/libdhcp4client-$(VER).so.0
+	ln -sf libdhcp4client-$(VER).so.0 $(DESTDIR)/$(LIBDIR)/libdhcp4client.so
+	install -p -m 0644 -D libdhcp4client.a $(DESTDIR)$(LIBDIR)/libdhcp4client.a
+	install -p -m 0644 -D dhcp4client.h $(DESTDIR)$(INCDIR)/dhcp4client/dhcp4client.h
+	install -p -m 0644 -D libdhcp_control.h $(DESTDIR)$(INCDIR)/dhcp4client/libdhcp_control.h
+	( cd $(TOP)/includes ; \
+	  find . -name "*.h" -type f | while read h ; do \
+	      install -p -m 0644 -D $$h $(DESTDIR)$(INCDIR)/dhcp4client/isc_dhcp/$$h ; \
+	  done ; \
+	)
+
+depend:
+	$(MKDEP) $(INCLUDES) $(PREDEFINES) $(SRCS)
+
+clean:
+	-rm -f $(OBJS)
+
+realclean: clean
+	-rm -f $(PROG) *~ #*
+
+distclean: realclean
+	-rm -f Makefile
+
+# This isn't the cleanest way to set up links, but I prefer this so I don't
+# need object targets for each subdirectory.  The idea is simple.  Since
+# libdhcp4client is a linked together wad of objects from across the source
+# tree, we change / to _ when linking source files here.  Follow this example:
+#
+# We need to use client/dhclient.c, so we make this link:
+#     rm -f client_dhclient.c
+#     ln -s $(TOP)/client/dhclient.c client_dhclient.c
+#
+# Simple.  Given the way the ISC build system works, this is the easiest to
+# maintain and least invasive.
+#
+# David Cantrell <dcantrell@redhat.com>
+links:
+	@for target in $(SRCS); do \
+		source="`echo $$target | sed -e 's|_|/|'`"; \
+		if [ ! -b $$target ]; then \
+			rm -f $$target; \
+		fi; \
+		ln -s $(TOP)/$$source $$target; \
+	done; \
+	for hdr in $(HDRS); do \
+		if [ ! -b $$hdr ]; then \
+			rm -f $$hdr; \
+		fi; \
+		ln -s $(TOP)/libdhcp4client/$$hdr $$hdr; \
+	done
+
+# minires is difficult to build because it overrides things in common and dst,
+# so we just link with the already built libres.a since we need it all anyway
+libres.a:
+	if [ ! -f ../minires/$@ ]; then \
+		$(MAKE) -C ../minires; \
+	fi; \
+	ln ../minires/libres.a .; \
+	$(AR) x libres.a
+
+# Create the libraries
+# minires/res_query.o contains an undefined symbol __h_errno_set, is not
+# used by any dhcp code, and is optimized out by the linker when producing
+# the dhclient executable or a shared library
+libdhcp4client.a: $(OBJS) libres.a
+	$(AR) crus $@ $(OBJS) `$(AR) t libres.a | grep -v res_query.o`
+
+libdhcp4client-$(VER).so.0: $(OBJS) libres.a
+	$(CC) -shared -o $@ -Wl,-soname,$@ $(OBJS) `$(AR) t libres.a | grep -v res_query.o`
+
+# Dependencies (semi-automatically-generated)
--- /dev/null	2007-02-02 08:56:33.488585704 -0500
+++ dhcp-3.0.5/libdhcp4client/dhcp4client.h	2007-02-02 15:27:55.000000000 -0500
@@ -0,0 +1,24 @@
+/* dhcp4client.h
+ *
+ *  Interface to the ISC dhcp IPv4 client libdhcp4client library.
+ *
+ *
+ *  Copyright(C) Jason Vas Dias <jvdias@redhat.com> Red Hat Inc. May 2006
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation at 
+ *           http://www.fsf.org/licensing/licenses/gpl.txt
+ *  and included in this software distribution as the "LICENSE" file.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+
+struct libdhcp_control_s;  /* include libdhcp_control.h or libdhcp.h for this */
+
+extern int dhcpv4_client( struct libdhcp_control_s *dhc_ctl, int argc, char **argv, char **envp);
+    /* The ISC IPv4 DHCP client main() function .
+     */
--- /dev/null	2007-02-02 08:56:33.488585704 -0500
+++ dhcp-3.0.5/libdhcp4client/libdhcp_control.h	2007-02-02 15:27:55.000000000 -0500
@@ -0,0 +1,102 @@
+/* libdhcp_control.h
+ *
+ *  DHCP client control API for libdhcp, a minimal interface to the
+ *  ISC dhcp IPv4 client libdhcp4client library,
+ *  and to the dhcpv6 DHCPv6 client libdhcp6client library.
+ *
+ *  Each DHCP client library must include this file to be controlled
+ *  by libdhcp.
+ *
+ *  Copyright(C) Jason Vas Dias <jvdias@redhat.com> Red Hat Inc. May 2006
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation at 
+ *           http://www.fsf.org/licensing/licenses/gpl.txt
+ *  and included in this software distribution as the "LICENSE" file.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+#ifndef LIBDHCP_CONTROL_H
+#define LIBDHCP_CONTROL_H
+
+#include <stdint.h>
+
+#define  LOG_FATAL 8
+
+typedef enum dhcp_state_e
+{
+
+    /* DHCPv4 client states - third callback arg will be a 'struct client_state *'    */
+    DHC4_NBI,         		/* failed: no broadcast interfaces found              */
+    DHC4_PREINIT, 		/* configuration started - bring the interface "UP"   */
+    DHC4_BOUND, 		/* lease obtained                                     */
+    DHC4_RENEW, 		/* lease renewed                                      */
+    DHC4_REBOOT,	        /* have valid lease, but now obtained a different one */
+    DHC4_REBIND, 		/* new, different lease                               */
+    DHC4_STOP,  		/* remove old lease                                   */
+    DHC4_MEDIUM, 		/* media selection begun                              */
+    DHC4_TIMEOUT, 		/* timed out contacting DHCP server                   */
+    DHC4_FAIL, 			/* all attempts to contact server timed out, sleeping */
+    DHC4_EXPIRE, 		/* lease has expired, renewing                        */
+    DHC4_RELEASE, 		/* releasing lease                                    */
+    /* This state raised by both clients: */
+    DHC_TIMEDOUT,               /* libdhcp_control timeout has been exceeded          */
+    /* DHCPv6 client states:    */
+    DHC6_BOUND,                 /* new lease obtained             - arg is optinfo *  */
+    DHC6_REBIND,                /* existing expired lease rebound - arg is optinfo *  */
+    DHC6_RELEASE                /* existing lease expired         - arg is dhcp6_iaidaddr*/
+} DHCP_State;
+
+struct libdhcp_control_s;
+
+typedef
+int ( *LIBDHCP_Error_Handler )
+    ( struct libdhcp_control_s *ctl,
+      int priority,  /* ala syslog(3): LOG_EMERG=0 - LOG_DEBUG=7 (+ LOG_FATAL=8 : finished -> 1)   */
+      const char *fmt,
+      va_list ap
+    );
+
+typedef 
+int ( *LIBDHCP_Callback ) ( struct libdhcp_control_s *control, enum dhcp_state_e, void* );
+    /* The DHCP clients will call the users' callback on important state change events,
+     * with the second arg set to the client DHCP_State, and the third arg set to
+     * a client specific pointer as described below.
+     */
+
+typedef 
+struct libdhcp_control_s
+{
+    LIBDHCP_Callback    callback;    	/* the DHCP clients' main loop calls this on state changes */
+    uint16_t            capability;     /* LIBDHCP_Capability bits to enable                       */
+    uint8_t             finished;       /* set to one to make clients exit their main loop         */
+    uint8_t             decline;        /* set to one to decline the lease (DHCPv4 only)           */
+    time_t              timeout;        /* (timeout+now) == time after which clients MUST return   */
+    time_t              now;            /* clients set this to time(0) on entering main loop       */
+    void               *arg;            /* user data pointer                                       */
+    LIBDHCP_Error_Handler eh;
+} LIBDHCP_Control;
+
+typedef enum libdhcp_capability_e
+{/* DHCP client "capabilities" */ 
+    DHCP_USE_LEASE_DATABASE   = 1,  	/* use / do not use persistent lease database files */
+    DHCP_USE_PID_FILE         = 2,  	/* use / do not use pid file                        */
+ /*
+  * DHCPv6 supports these capabilities in process, 
+  * while the DHCPv4 client will fork and exec the dhclient-script to implement them if these
+  * bits are set - otherwise, if no bits are set, the callback is called and the script is 
+  * not run.
+  */
+    DHCP_CONFIGURE_INTERFACES = 4,  	/* configure interfaces UP/DOWN as required         */
+    DHCP_CONFIGURE_ADDRESSES  = 8,  	/* configure interface addresses as required        */
+    DHCP_CONFIGURE_ROUTES     =16,  	/* configure routes as required                     */
+    DHCP_CONFIGURE_RESOLVER   =32,  	/* configure resolv.conf as required                */
+    /* DHCPv6 only: */
+    DHCP_CONFIGURE_RADVD      =64,  	/* configure radvd.conf & restart radvd as required */
+} LIBDHCP_Capability;
+
+#endif
--- dhcp-3.0.5/Makefile.dist.libdhcp4client	2004-06-10 13:59:10.000000000 -0400
+++ dhcp-3.0.5/Makefile.dist	2007-02-02 15:27:55.000000000 -0500
@@ -22,7 +22,7 @@
 #   http://www.isc.org/
 
 
-SUBDIRS=	common $(MINIRES) dst omapip server client relay dhcpctl
+SUBDIRS=	common $(MINIRES) dst omapip server client relay dhcpctl libdhcp4client
 
 all:
 	@for dir in ${SUBDIRS}; do \