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dhcp/dhcp-3.0.5-extended-new-option-info.patch
David Cantrell 9cf76837b4 - Remove struct universe *universe from envadd_state in the client patch 
- Add struct universe *universe to envadd_state in the enoi patch
- Add example dbusified dhclient-script in the enoi patch
2006-11-13 18:04:31 +00:00

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--- dhcp-3.0.5/client/scripts/linux.dbus-example.enoi 2006-11-13 12:59:34.000000000 -0500
+++ dhcp-3.0.5/client/scripts/linux.dbus-example 2006-11-13 12:59:26.000000000 -0500
@@ -0,0 +1,223 @@
+#!/bin/bash
+# dhclient-script for Linux. Dan Halbert, March, 1997.
+# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
+# No guarantees about this. I'm a novice at the details of Linux
+# networking.
+
+# Notes:
+
+# 0. This script is based on the netbsd script supplied with dhcp-970306.
+
+# 1. ifconfig down apparently deletes all relevant routes and flushes
+# the arp cache, so this doesn't need to be done explicitly.
+
+# 2. The alias address handling here has not been tested AT ALL.
+# I'm just going by the doc of modern Linux ip aliasing, which uses
+# notations like eth0:0, eth0:1, for each alias.
+
+# 3. I have to calculate the network address, and calculate the broadcast
+# address if it is not supplied. This might be much more easily done
+# by the dhclient C code, and passed on.
+
+# 4. TIMEOUT not tested. ping has a flag I don't know, and I'm suspicious
+# of the $1 in its args.
+
+if [ -n "${dhc_dbus}" ]; then
+ /bin/dbus-send \
+ --system --dest=com.redhat.dhcp --type=method_call \
+ /com/redhat/dhcp/$interface com.redhat.dhcp.set \
+ 'string:'"`env | /bin/egrep -v '^(PATH|SHLVL|_|PWD|dhc_dbus)\='`";
+ if (( ( dhc_dbus & 31 ) == 31 )); then
+ exit 0;
+ fi;
+fi;
+
+make_resolv_conf() {
+ if [ "x$new_domain_name" != x ] && [ x"$new_domain_name_servers" != x ]; then
+ echo search $new_domain_name >/etc/resolv.conf
+ chmod 644 /etc/resolv.conf
+ for nameserver in $new_domain_name_servers; do
+ echo nameserver $nameserver >>/etc/resolv.conf
+ done
+ fi
+}
+
+# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
+exit_with_hooks() {
+ exit_status=$1
+ if [ -f /etc/dhclient-exit-hooks ]; then
+ . /etc/dhclient-exit-hooks
+ fi
+# probably should do something with exit status of the local script
+ exit $exit_status
+}
+
+# Invoke the local dhcp client enter hooks, if they exist.
+if [ -f /etc/dhclient-enter-hooks ]; then
+ exit_status=0
+ . /etc/dhclient-enter-hooks
+ # allow the local script to abort processing of this state
+ # local script must set exit_status variable to nonzero.
+ if [ $exit_status -ne 0 ]; then
+ exit $exit_status
+ fi
+fi
+
+release=`uname -r`
+release=`expr $release : '\(.*\)\..*'`
+relminor=`echo $release |sed -e 's/[0-9]*\.\([0-9][0-9]*\)\(\..*\)*$/\1/'`
+relmajor=`echo $release |sed -e 's/\([0-9][0-9]*\)\..*$/\1/'`
+
+if [ x$new_broadcast_address != x ]; then
+ new_broadcast_arg="broadcast $new_broadcast_address"
+fi
+if [ x$old_broadcast_address != x ]; then
+ old_broadcast_arg="broadcast $old_broadcast_address"
+fi
+if [ x$new_subnet_mask != x ]; then
+ new_subnet_arg="netmask $new_subnet_mask"
+fi
+if [ x$old_subnet_mask != x ]; then
+ old_subnet_arg="netmask $old_subnet_mask"
+fi
+if [ x$alias_subnet_mask != x ]; then
+ alias_subnet_arg="netmask $alias_subnet_mask"
+fi
+
+if [ x$reason = xMEDIUM ]; then
+ # Linux doesn't do mediums (ok, ok, media).
+ exit_with_hooks 0
+fi
+
+if [ x$reason = xPREINIT ]; then
+ if [ x$alias_ip_address != x ]; then
+ # Bring down alias interface. Its routes will disappear too.
+ ifconfig $interface:0- inet 0
+ fi
+ if [ $relmajor -lt 2 ] || ( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] )
+ then
+ ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
+ broadcast 255.255.255.255 up
+ # Add route to make broadcast work. Do not omit netmask.
+ route add default dev $interface netmask 0.0.0.0
+ else
+ ifconfig $interface 0 up
+ fi
+
+ # We need to give the kernel some time to get the interface up.
+ sleep 1
+
+ exit_with_hooks 0
+fi
+
+if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
+ exit_with_hooks 0
+fi
+
+if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
+ [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
+ current_hostname=`hostname`
+ if [ x$current_hostname = x ] || \
+ [ x$current_hostname = x$old_host_name ]; then
+ if [ x$current_hostname = x ] || \
+ [ x$new_host_name != x$old_host_name ]; then
+ hostname $new_host_name
+ fi
+ fi
+
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
+ if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
+ [ x$alias_ip_address != x$old_ip_address ]; then
+ # Possible new alias. Remove old alias.
+ ifconfig $interface:0- inet 0
+ fi
+ if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
+ # IP address changed. Bringing down the interface will delete all routes,
+ # and clear the ARP cache.
+ ifconfig $interface inet 0 down
+
+ fi
+ fi
+ if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
+ [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
+ ifconfig $interface inet $new_ip_address $new_subnet_arg \
+ $new_broadcast_arg
+ fi
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 4 ) != 4 )); then
+ # Add a network route to the computed network address.
+ if [ $relmajor -lt 2 ] || \
+ ( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then
+ route add -net $new_network_number $new_subnet_arg dev $interface
+ fi
+ for router in $new_routers; do
+ route add default gw $router
+ done
+ fi
+ fi
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
+ if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
+ then
+ ifconfig $interface:0- inet 0
+ ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
+ route add -host $alias_ip_address $interface:0
+ fi
+ fi
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 1 ) != 1 )); then
+ make_resolv_conf
+ fi
+ exit_with_hooks 0
+fi
+
+if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
+if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
+ || [ x$reason = xSTOP ]; then
+ if [ x$alias_ip_address != x ]; then
+ # Turn off alias interface.
+ ifconfig $interface:0- inet 0
+ fi
+ if [ x$old_ip_address != x ]; then
+ # Shut down interface, which will delete routes and clear arp cache.
+ ifconfig $interface inet 0 down
+ fi
+ if [ x$alias_ip_address != x ]; then
+ ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
+ route add -host $alias_ip_address $interface:0
+ fi
+ exit_with_hooks 0
+fi
+fi
+
+if [ x$reason = xTIMEOUT ]; then
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
+ if [ x$alias_ip_address != x ]; then
+ ifconfig $interface:0- inet 0
+ fi
+ ifconfig $interface inet $new_ip_address $new_subnet_arg \
+ $new_broadcast_arg
+ fi
+ set $new_routers
+ ############## what is -w in ping?
+ if ping -q -c 1 $1; then
+ if [ x$new_ip_address != x$alias_ip_address ] && \
+ [ x$alias_ip_address != x ]; then
+ ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
+ route add -host $alias_ip_address dev $interface:0
+ fi
+ if [ $relmajor -lt 2 ] || \
+ ( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then
+ route add -net $new_network_number
+ fi
+ for router in $new_routers; do
+ route add default gw $router
+ done
+ make_resolv_conf
+ exit_with_hooks 0
+ fi
+ if [ -z "${dhc_dbus}" ] || (( ( dhc_dbus & 2 ) != 2 )); then
+ ifconfig $interface inet 0 down
+ fi
+ exit_with_hooks 1
+fi
+
+exit_with_hooks 0
--- dhcp-3.0.5/client/dhclient.c.enoi 2006-08-22 11:13:57.000000000 -0400
+++ dhcp-3.0.5/client/dhclient.c 2006-11-13 12:44:11.000000000 -0500
@@ -74,6 +74,9 @@
int onetry=0;
int quiet=0;
int nowait=0;
+#ifdef EXTENDED_NEW_OPTION_INFO
+int extended_option_environment = 0;
+#endif
static void usage PROTO ((void));
@@ -204,6 +207,11 @@
} else if (!strcmp (argv [i], "--version")) {
log_info ("isc-dhclient-%s", DHCP_VERSION);
exit (0);
+#ifdef EXTENDED_NEW_OPTION_INFO
+ } else if (!strcmp (argv [i], "-x")) {
+ extended_option_environment = 1;
+ new_option_info_tree = GENERATE_NEW_OPTION_INFO;
+#endif
} else if (argv [i][0] == '-') {
usage ();
} else {
@@ -476,7 +484,11 @@
log_info (arr);
log_info (url);
+#ifdef EXTENDED_NEW_OPTION_INFO
+ log_error ("Usage: dhclient [-1dqr] [-nwx] [-p <port>] %s",
+#else
log_error ("Usage: dhclient [-1dqr] [-nw] [-p <port>] %s",
+#endif
"[-s server]");
log_error (" [-cf config-file] [-lf lease-file]%s",
"[-pf pid-file] [-e VAR=val]");
@@ -2447,8 +2459,30 @@
struct envadd_state {
struct client_state *client;
const char *prefix;
+#ifdef EXTENDED_NEW_OPTION_INFO
+ struct universe *universe;
+#endif
};
+#ifdef EXTENDED_NEW_OPTION_INFO
+static
+void build_universe_info_envvar
+( struct option_cache *oc,
+ struct packet *p, struct lease *l,
+ struct client_state *client,
+ struct option_state *in_o,
+ struct option_state *cf_o,
+ struct binding_scope **scope,
+ struct universe *u, void *es
+)
+{
+ char info_name[512], info_data[512];
+ snprintf(info_name, 512, "%s._universe_.", oc->option->universe->name);
+ snprintf(info_data, 512, "%u:%s", oc->option->code,oc->option->format);
+ client_envadd( client, info_name, oc->option->name, info_data );
+}
+#endif
+
void client_option_envadd (struct option_cache *oc,
struct packet *packet, struct lease *lease,
struct client_state *client_state,
@@ -2465,6 +2499,28 @@
in_options, cfg_options, scope, oc, MDL)) {
if (data.len) {
char name [256];
+#ifdef EXTENDED_NEW_OPTION_INFO
+ if (extended_option_environment) {
+ if ((oc->option->universe != &dhcp_universe)
+ && (oc->option->universe->index > fqdn_universe.index)
+ && (es->universe != oc->option->universe)) {
+ es->universe = oc->option->universe;
+ (*(es->universe->foreach)) ((struct packet *)0,
+ (struct lease *)0,
+ client_state,
+ in_options, cfg_options,
+ scope, es->universe, es,
+ build_universe_info_envvar);
+ } else {
+ if (lookup_new_option_info(oc->option) != NULL) {
+ build_universe_info_envvar(oc, packet, lease,
+ client_state, in_options,
+ cfg_options, scope,
+ oc->option->universe, es);
+ }
+ }
+ }
+#endif
if (dhcp_option_ev_name (name, sizeof name,
oc -> option)) {
client_envadd (es -> client, es -> prefix,
@@ -2704,7 +2760,14 @@
s = option -> name;
if (j + 1 == buflen)
return 0;
+#ifdef EXTENDED_NEW_OPTION_INFO
+ if (!extended_option_environment)
+ buf[j++] = '_';
+ else
+ buf[j++] = '.';
+#else
buf [j++] = '_';
+#endif
}
++i;
} while (i != 2);
--- dhcp-3.0.5/client/dhclient.8.enoi 2005-09-14 12:03:33.000000000 -0400
+++ dhcp-3.0.5/client/dhclient.8 2006-11-13 12:42:28.000000000 -0500
@@ -82,6 +82,9 @@
.B -w
]
[
+.B -x
+]
+[
.I if0
[
.I ...ifN
@@ -265,6 +268,11 @@
supplying the
.B -nw
flag.
+.PP
+The -x argument enables extended option information to be created in the
+-s dhclient-script environment, which would allow applications running
+in that environment to handle options they do not know about in advance -
+this is a Red Hat extension to support dhcdbd and NetworkManager.
.SH CONFIGURATION
The syntax of the dhclient.conf(5) file is discussed separately.
.SH OMAPI
--- dhcp-3.0.5/common/parse.c.enoi 2006-02-22 17:43:27.000000000 -0500
+++ dhcp-3.0.5/common/parse.c 2006-11-13 12:42:28.000000000 -0500
@@ -1271,6 +1271,10 @@
option_hash_add (option -> universe -> hash,
(const char *)option -> name,
0, option, MDL);
+#ifdef EXTENDED_NEW_OPTION_INFO
+ if (new_option_info_tree != NULL)
+ add_new_option_info(option);
+#endif
return 1;
}
--- dhcp-3.0.5/common/tables.c.enoi 2006-02-22 17:43:27.000000000 -0500
+++ dhcp-3.0.5/common/tables.c 2006-11-13 12:42:28.000000000 -0500
@@ -1250,3 +1250,35 @@
fqdn_universe.name, 0,
&fqdn_universe, MDL);
}
+
+#ifdef EXTENDED_NEW_OPTION_INFO
+#include <search.h>
+
+void *new_option_info_tree = NULL;
+
+static int new_option_info_comparator(const void * p1, const void * p2) {
+ uint32_t ocode1 = (((const struct option*)p1)->universe->index << 8)
+ | (((const struct option*)p1)->code),
+ ocode2 = (((const struct option*)p2)->universe->index << 8)
+ | (((const struct option*)p2)->code);
+
+ return((ocode1 == ocode2) ? 0 : ((ocode1 > ocode2) ? 1 : -1));
+}
+
+void *add_new_option_info(struct option * option) {
+ if (option->universe->index >= fqdn_universe.index)
+ return NULL;
+
+ if (new_option_info_tree == GENERATE_NEW_OPTION_INFO)
+ new_option_info_tree = NULL;
+
+ return tsearch(option, &(new_option_info_tree), new_option_info_comparator);
+}
+
+void *lookup_new_option_info(struct option * option) {
+ if (new_option_info_tree == GENERATE_NEW_OPTION_INFO)
+ return NULL;
+
+ return tfind(option, &(new_option_info_tree), new_option_info_comparator);
+}
+#endif
--- dhcp-3.0.5/includes/dhcpd.h.enoi 2006-05-17 16:16:59.000000000 -0400
+++ dhcp-3.0.5/includes/dhcpd.h 2006-11-13 12:42:28.000000000 -0500
@@ -1811,6 +1811,13 @@
void initialize_common_option_spaces PROTO ((void));
struct universe *config_universe;
+#ifdef EXTENDED_NEW_OPTION_INFO
+#define GENERATE_NEW_OPTION_INFO ((void*)1)
+extern void *new_option_info_tree;
+extern void *add_new_option_info(struct option *);
+extern void *lookup_new_option_info(struct option *);
+#endif
+
/* stables.c */
#if defined (FAILOVER_PROTOCOL)
extern failover_option_t null_failover_option;
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