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authorMiloslav Trmac <mitr@volny.cz>2006-05-14 01:34:30 +0000
committerMiloslav Trmac <mitr@volny.cz>2006-05-14 01:34:30 +0000
commit599631bda00f650cdfc6e3f39d112efc0bb7c6bf (patch)
treef2139af6236f9fc2027276b8cf3994f0d9cb8aff
parent906238c891d3f02b4c706457783694e3a01d91ce (diff)
Modify IPV6TO4_ROUTING to also add addresses on the interfaces
Add RFC 3041 (IPv6 privacy) support (patch for both by Peter Bieringer <pb@bieringer.de>)
Diffstat
-rw-r--r--ppp/ip-down.ipv6to459
-rw-r--r--ppp/ip-up.ipv6to428
-rw-r--r--sysconfig.txt9
-rwxr-xr-xsysconfig/network-scripts/ifdown-ipv684
-rwxr-xr-xsysconfig/network-scripts/ifdown-sit12
-rwxr-xr-xsysconfig/network-scripts/ifup-ipv632
-rwxr-xr-xsysconfig/network-scripts/ifup-sit15
-rw-r--r--sysconfig/network-scripts/network-functions-ipv635
8 files changed, 165 insertions, 109 deletions
diff --git a/ppp/ip-down.ipv6to4 b/ppp/ip-down.ipv6to4
index 9ca7250a..850005d8 100644
--- a/ppp/ip-down.ipv6to4
+++ b/ppp/ip-down.ipv6to4
@@ -4,12 +4,12 @@
#
#
# Taken from:
-# (P) & (C) 2000-2002 by Peter Bieringer <pb@bieringer.de>
+# (P) & (C) 2000-2005 by Peter Bieringer <pb@bieringer.de>
#
-# You will find more information in the IPv6-HowTo for Linux at
-# http://www.bieringer.de/linux/IPv6/
+# You will find more information on the initscripts-ipv6 homepage at
+# http://www.deepspace6.net/projects/initscripts-ipv6.html
#
-# Version 2002-10-30
+# Version 2005-09-22
#
# Calling parameters:
# $1: interface name
@@ -26,7 +26,7 @@
#
# Uses following information from /etc/sysconfig/network-scripts/ifcfg-$1:
# IPV6TO4INIT=yes|no: controls configuration
-# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup local subnetting
+# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup additional interfaces
#
# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering
# IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid"
@@ -40,11 +40,11 @@ if [ -z "$1" ]; then
fi
# Get global network configuration
-. /etc/sysconfig/network
+. /etc/sysconfig/network
# Source IPv4 helper functions
cd /etc/sysconfig/network-scripts
-. network-functions
+. network-functions
CONFIG=$1
[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
@@ -67,33 +67,38 @@ fi
# Run basic IPv6 test, if not ok, skip IPv6 initialization
ipv6_test testonly || exit 0
-# Test device status
+# Test status of ppp device
ipv6_test_device_status $DEVICE
if [ $? != 0 -a $? != 11 ]; then
# device doesn't exist or other problem occurs
exit 1
fi
-# Shutdown of 6to4, if configured
-valid6to4config="yes"
-
-# Get IPv4 address from interface
-ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`"
-if [ -z "$ipv4addr" ]; then
- # Has no IPv4 address
- valid6to4config="no"
-fi
+# Test status of tun6to4 device
+ipv6_test_device_status tun6to4
+if [ $? = 0 -o $? = 11 ]; then
+ # Device exists
+ valid6to4config="yes"
+
+ # Get IPv4 address from interface
+ ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`"
+ if [ -z "$ipv4addr" ]; then
+ # Has no IPv4 address
+ valid6to4config="no"
+ fi
-# Get local IPv4 address of dedicated tunnel
-ipv4addr6to4local="`ipv6_get_ipv4addr_of_tunnel tun6to4 local`"
+ # Get local IPv4 address of dedicated tunnel
+ ipv4addr6to4local="`ipv6_get_ipv4addr_of_tunnel tun6to4 local`"
-# IPv6to4 not enabled on this interface?
-if [ $IPV6TO4INIT != "yes" ]; then
- # Check against configured 6to4 tunnel to see if this interface was regardless used before
- if [ "$ipv4addr" != "$ipv4addr6to4local" ]; then
- # IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup
- valid6to4config="no"
+ # IPv6to4 not enabled on this interface?
+ if [ $IPV6TO4INIT != "yes" ]; then
+ # Check against configured 6to4 tunnel to see if this interface was regardless used before
+ if [ "$ipv4addr" != "$ipv4addr6to4local" ]; then
+ # IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup
+ valid6to4config="no"
+ fi
fi
+
fi
if [ "$valid6to4config" = "yes" ]; then
@@ -106,10 +111,10 @@ if [ "$valid6to4config" = "yes" ]; then
# Delete routes to local networks
for devsuf in $IPV6TO4_ROUTING; do
dev="`echo $devsuf | awk -F- '{ print $1 }'`"
- ipv6_cleanup_routes $dev ::
+ ipv6_cleanup_6to4_device $dev
done
fi
# Delete all configured 6to4 address
- ipv6_cleanup_6to4_tunnels tun6to4
+ ipv6_cleanup_6to4_tunnels tun6to4
fi
diff --git a/ppp/ip-up.ipv6to4 b/ppp/ip-up.ipv6to4
index 609e02c4..26f6f671 100644
--- a/ppp/ip-up.ipv6to4
+++ b/ppp/ip-up.ipv6to4
@@ -4,12 +4,12 @@
#
#
# Taken from:
-# (P) & (C) 2000-2002 by Peter Bieringer <pb@bieringer.de>
-#
-# You will find more information in the IPv6-HowTo for Linux at
-# http://www.bieringer.de/linux/IPv6/
+# (P) & (C) 2000-2005 by Peter Bieringer <pb@bieringer.de>
#
-# Version 2002-11-14
+# You will find more information on the initscripts-ipv6 homepage at
+# http://www.deepspace6.net/projects/initscripts-ipv6.html
+#
+# Version 2005-09-22
#
# Calling parameters:
# $1: interface name
@@ -28,8 +28,8 @@
# IPV6TO4_IPV4ADDR=<IPv4 address>: special local address for 6to4 tunneling (only needed behind a NAT gateway)
# IPV6TO4_RELAY=<IPv4 address>: remote 6to4 relay router address (default: 192.88.99.1)
# IPV6TO4_MTU=<MTU for IPv6>: controls IPv6 MTU for the 6to4 link (optional, default is MTU of interface - 20)
-# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup local subnetting
-# Example: IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64"
+# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup additional interfaces
+# Example: IPV6TO4_ROUTING="eth0-:f101::1/64 eth1-:f102::1/64"
#
# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering
# IPV6_RADVD_PIDFILE=<file>: PID file of radvd for sending signals, default is "/var/run/radvd/radvd.pid"
@@ -63,9 +63,9 @@ REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'`
# Test whether IPv6 should be configured, else stop
[ "$NETWORKING_IPV6" = "yes" ] || exit 0
-if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then
- exit 1
-fi
+if [ ! -f /etc/sysconfig/network-scripts/network-functions-ipv6 ]; then
+ exit 1
+fi
. /etc/sysconfig/network-scripts/network-functions-ipv6
@@ -106,12 +106,12 @@ if [ "$IPV6TO4INIT" = "yes" ]; then
if [ $? -ne 0 ]; then
valid6to4config="no"
fi
-
+
if [ "$valid6to4config" = "yes" ]; then
# Delete routes to local networks
for devsuf in $IPV6TO4_ROUTING; do
dev="`echo $devsuf | awk -F- '{ print $1 }'`"
- ipv6_cleanup_routes $dev ::
+ ipv6_cleanup_6to4_device $dev
done
# Cleanup all old data (needed, if "ip-down.ipv6to4" wasn't executed), delete all configured 6to4 address
@@ -182,11 +182,11 @@ if [ "$IPV6TO4INIT" = "yes" ]; then
# Generate 6to4 address
ipv6to4prefix="`ipv6_create_6to4_prefix $ipv4addr`"
if [ -n "$ipv6to4prefix" ]; then
- # Add route to local networks
+ # Add IPv6 address to interface (required interface route will be set automatically)
for devsuf in $IPV6TO4_ROUTING; do
dev="`echo $devsuf | awk -F- '{ print $1 }'`"
suf="`echo $devsuf | awk -F- '{ print $2 }'`"
- ipv6_add_route ${ipv6to4prefix}$suf :: $dev
+ ipv6_add_addr_on_device ${dev} ${ipv6to4prefix}${suf}
done
else
echo $"Error occured while calculating the IPv6to4 prefix"
diff --git a/sysconfig.txt b/sysconfig.txt
index ff136580..1b224d9c 100644
--- a/sysconfig.txt
+++ b/sysconfig.txt
@@ -590,6 +590,9 @@ Files in /etc/sysconfig/network-scripts/
Note: Must be greater or equal to 1280.
Example:
IPV6_MTU="1280"
+ IPV6_PRIVACY=rfc3041
+ Enables RFC 3041 IPv6 privacy support if set.
+ Default: RFC 3041 support disabled
Special configuration options for multi-homed hosts etc.
IPV6_ROUTER=yes|no: Controls IPv6 autoconfiguration
@@ -615,10 +618,10 @@ Files in /etc/sysconfig/network-scripts/
IPV6TO4_MTU="1280"
Default: MTU of master device - 20
IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ..." (optional)
- A list of routing tokens to setup proper IPv6 routes on the LAN
+ A list of routing tokens to setup proper IPv6 interfaces on the LAN
Example:
- IPV6TO4_ROUTING="eth0-:0004::0/64 eth1-:0005::0/64"
- Will create one route per eth0 and eth1, taking given SLA
+ IPV6TO4_ROUTING="eth0-:0004::1/64 eth1-:0005::1/64"
+ Will create one address per eth0 and eth1, taking given SLA
Optional settings for a 6to4 tunnel or a ppp link
IPV6_CONTROL_RADVD=yes|no (optional)
diff --git a/sysconfig/network-scripts/ifdown-ipv6 b/sysconfig/network-scripts/ifdown-ipv6
index b9120134..64ee246d 100755
--- a/sysconfig/network-scripts/ifdown-ipv6
+++ b/sysconfig/network-scripts/ifdown-ipv6
@@ -11,7 +11,7 @@
#
# RHL integration assistance by Pekka Savola <pekkas@netcore.fi>
#
-# Version 2004-09-02
+# Version 2005-09-22
#
# Note: if called as (like normally) by /etc/sysconfig/network-scripts/ifdown
# exit codes aren't handled by "ifdown"
@@ -25,7 +25,7 @@
#
# Optional for 6to4 tunneling:
# IPV6TO4_RELAY=<IPv4 address>: IPv4 address of the remote 6to4 relay [default: 192.88.99.1]
-# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup local subnetting
+# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup internal interfaces
#
# Optional for 6to4 tunneling links to trigger radvd:
# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering [optional]
@@ -39,10 +39,10 @@
#
-. /etc/sysconfig/network
+. /etc/sysconfig/network
cd /etc/sysconfig/network-scripts
-. network-functions
+. network-functions
CONFIG=$1
[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
@@ -74,45 +74,51 @@ ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.forwarding=0 >/dev/null 2>&1
ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_ra=0 >/dev/null 2>&1
ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.accept_redirects=0 >/dev/null 2>&1
-# Shutdown of 6to4, if configured
-valid6to4config="yes"
-if [ -z "$IPV6TO4_RELAY" ]; then
- IPV6TO4_RELAY="192.88.99.1"
-fi
-
-# Get IPv4 address from interface
-if [ -n "$IPV6TO4_IPV4ADDR" ]; then
- # Take special configured from config file (precedence 1)
- ipv4addr="$IPV6TO4_IPV4ADDR"
+# Test status of tun6to4 device
+ipv6_test_device_status tun6to4
+if [ $? = 0 -o $? = 11 ]; then
+ # Device exists
+ valid6to4config="yes"
- # Get IPv4 address from interface first
- ipv4addrlocal="`ipv6_get_ipv4addr_of_device $DEVICE`"
- if [ -z "$ipv4addrlocal" ]; then
- # Take configured from config file
- ipv4addrlocal="$IPADDR"
+ if [ -z "$IPV6TO4_RELAY" ]; then
+ IPV6TO4_RELAY="192.88.99.1"
fi
-else
- # Get IPv4 address from interface first (has precedence 2)
- ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`"
- if [ -z "$ipv4addr" ]; then
- # Take configured from config file (precedence 3)
- ipv4addr="$IPADDR"
+
+ # Get IPv4 address from interface
+ if [ -n "$IPV6TO4_IPV4ADDR" ]; then
+ # Take special configured from config file (precedence 1)
+ ipv4addr="$IPV6TO4_IPV4ADDR"
+
+ # Get IPv4 address from interface first
+ ipv4addrlocal="`ipv6_get_ipv4addr_of_device $DEVICE`"
+ if [ -z "$ipv4addrlocal" ]; then
+ # Take configured from config file
+ ipv4addrlocal="$IPADDR"
+ fi
+ else
+ # Get IPv4 address from interface first (has precedence 2)
+ ipv4addr="`ipv6_get_ipv4addr_of_device $DEVICE`"
+ if [ -z "$ipv4addr" ]; then
+ # Take configured from config file (precedence 3)
+ ipv4addr="$IPADDR"
+ fi
+ ipv4addrlocal="$ipv4addr"
fi
- ipv4addrlocal="$ipv4addr"
-fi
-# Get local IPv4 address of dedicated tunnel
-ipv4addr6to4local="`ipv6_get_ipv4addr_of_tunnel tun6to4 local`"
+ # Get local IPv4 address of dedicated tunnel
+ ipv4addr6to4local="`ipv6_get_ipv4addr_of_tunnel tun6to4 local`"
-if [ -z "$ipv4addrlocal" -o -z "$ipv4addr6to4local" ]; then
- # no IPv4 addresses given, 6to4 sure not configured
- valid6to4config="no"
-else
- # Check against configured 6to4 tunnel to see if this interface was used before
- if [ "$ipv4addrlocal" != "$ipv4addr6to4local" ]; then
- # IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup
+ if [ -z "$ipv4addrlocal" -o -z "$ipv4addr6to4local" ]; then
+ # no IPv4 addresses given, 6to4 sure not configured
valid6to4config="no"
+ else
+ # Check against configured 6to4 tunnel to see if this interface was used before
+ if [ "$ipv4addrlocal" != "$ipv4addr6to4local" ]; then
+ # IPv4 address of interface does't match local tunnel address, interface was not used for current 6to4 setup
+ valid6to4config="no"
+ fi
fi
+
fi
# Shutdown of 6to4, if configured
@@ -121,16 +127,16 @@ if [ "$valid6to4config" = "yes" ]; then
# Delete routes to local networks
for devsuf in $IPV6TO4_ROUTING; do
dev="`echo $devsuf | awk -F- '{ print $1 }'`"
- ipv6_cleanup_routes $dev ::
+ ipv6_cleanup_6to4_device $dev
done
fi
# Delete all configured 6to4 address
- ipv6_cleanup_6to4_tunnels tun6to4
+ ipv6_cleanup_6to4_tunnels tun6to4
# Control running radvd
ipv6_trigger_radvd down "$IPV6_RADVD_TRIGGER_ACTION" $IPV6_RADVD_PIDFILE
fi
-# Delete all current configured IPv6 addresses on this interface
+# Delete all current configured IPv6 addresses on this interface
ipv6_cleanup_device $DEVICE
diff --git a/sysconfig/network-scripts/ifdown-sit b/sysconfig/network-scripts/ifdown-sit
index 2059f96a..36603177 100755
--- a/sysconfig/network-scripts/ifdown-sit
+++ b/sysconfig/network-scripts/ifdown-sit
@@ -4,10 +4,10 @@
#
#
# Taken from:
-# (P) & (C) 2000-2002 by Peter Bieringer <pb@bieringer.de>
+# (P) & (C) 2000-2003 by Peter Bieringer <pb@bieringer.de>
#
-# You will find more information in the IPv6-HowTo for Linux at
-# http://www.bieringer.de/linux/IPv6/
+# You will find more information on the initscripts-ipv6 homepage at
+# http://www.deepspace6.net/projects/initscripts-ipv6.html
#
# RHL integration assistance by Pekka Savola <pekkas@netcore.fi>
#
@@ -21,10 +21,10 @@
#
-. /etc/sysconfig/network
+. /etc/sysconfig/network
cd /etc/sysconfig/network-scripts
-. network-functions
+. network-functions
CONFIG=$1
[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
@@ -58,4 +58,4 @@ if [ $? != 0 -a $? != 11 ]; then
fi
# Cleanup and shut down IPv6-in-IPv4 tunnel device
-ipv6_del_tunnel_device $DEVICE
+ipv6_del_tunnel_device $DEVICE
diff --git a/sysconfig/network-scripts/ifup-ipv6 b/sysconfig/network-scripts/ifup-ipv6
index 6ff924b0..8762129f 100755
--- a/sysconfig/network-scripts/ifup-ipv6
+++ b/sysconfig/network-scripts/ifup-ipv6
@@ -4,17 +4,17 @@
#
#
# Taken from:
-# (P) & (C) 2000-2004 by Peter Bieringer <pb@bieringer.de>
+# (P) & (C) 2000-2005 by Peter Bieringer <pb@bieringer.de>
#
# You will find more information on the initscripts-ipv6 homepage at
# http://www.deepspace6.net/projects/initscripts-ipv6.html
#
# RHL integration assistance by Pekka Savola <pekkas@netcore.fi>
#
-# Version 2004-03-21
+# Version 2005-09-22
#
# Note: if called (like normally) by /etc/sysconfig/network-scripts/ifup
-# exit codes aren't handled by "ifup"
+# exit codes aren't handled by "ifup"
#
# Uses following information from "/etc/sysconfig/network":
# NETWORKING_IPV6=yes|no: controls IPv6 initialization (global setting)
@@ -31,14 +31,16 @@
# IPV6FORWARDING=yes: IPV6_AUTOCONF=no, IPV6_ROUTER=yes
# IPV6FORWARDING=no: IPV6_AUTOCONF=yes
# IPV6_MTU=<MTU for IPv6>: controls IPv6 MTU for this link (optional)
+# IPV6_PRIVACY="rfc3041": control IPv6 privacy (optional)
+# This script only supports "rfc3041" (if kernel supports it)
#
# Optional for 6to4 tunneling (hardwired name of tunnel device is "tun6to4"):
# IPV6TO4INIT=yes|no: controls 6to4 tunneling setup
# IPV6TO4_RELAY=<IPv4 address>: IPv4 address of the remote 6to4 relay (default: 192.88.99.1)
# IPV6TO4_MTU=<MTU for IPv6>: controls IPv6 MTU for the 6to4 link (optional, default is MTU of interface - 20)
# IPV6TO4_IPV4ADDR=<IPv4 address>: overwrite local IPv4 address (optional)
-# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup local subnetting
-# Example: IPV6TO4_ROUTING="eth0-:f101::0/64 eth1-:f102::0/64"
+# IPV6TO4_ROUTING="<device>-<suffix>/<prefix length> ...": information to setup additional interfaces
+# Example: IPV6TO4_ROUTING="eth0-:f101::1/64 eth1-:f102::1/64"
#
# Optional for 6to4 tunneling to trigger radvd:
# IPV6_CONTROL_RADVD=yes|no: controls radvd triggering (optional)
@@ -48,18 +50,18 @@
# Required version of radvd to use 6to4 prefix recalculation
# 0.6.2p3 or newer supporting option "Base6to4Interface"
# Required version of radvd to use dynamic ppp links
-# 0.7.0 + fixes or newer
+# 0.7.0 + fixes or newer
#
-. /etc/sysconfig/network
+. /etc/sysconfig/network
cd /etc/sysconfig/network-scripts
-. network-functions
+. network-functions
CONFIG=$1
[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
-source_config
+source_config
# IPv6 don't need aliases anymore, config is skipped
REALDEVICE=`echo ${DEVICE} | sed 's/:.*//g'`
@@ -83,7 +85,7 @@ ipv6_test_device_status $DEVICE
if [ $? != 0 -a $? != 11 ]; then
# device doesn't exist or other problem occurs
exit 1
-fi
+fi
# Setup IPv6 address on specified interface
if ! [ -z "$IPV6ADDR" ]; then
@@ -142,6 +144,14 @@ if [ -n "$IPV6ADDR_SECONDARIES" ]; then
done
fi
+# Enable IPv6 RFC3041 privacy extensions if desired
+if [ "$IPV6_PRIVACY" = "rfc3041" ]; then
+ ipv6_exec_sysctl -w net.ipv6.conf.$DEVICE.use_tempaddr=2 >/dev/null 2>&1
+ if [ $? -ne 0 ]; then
+ echo $"Cannot enable IPv6 privacy method '$IPV6_PRIVACY', not supported by kernel"
+ fi
+fi
+
# Setup default IPv6 route, check are done by function
if [ -n "$IPV6_DEFAULTDEV" -o -n "$IPV6_DEFAULTGW" ]; then
ipv6_set_default_route "$IPV6_DEFAULTGW" "$IPV6_DEFAULTDEV" "$DEVICE"
@@ -284,7 +294,7 @@ if [ "$IPV6TO4INIT" = "yes" ]; then
for devsuf in $IPV6TO4_ROUTING; do
dev="`echo $devsuf | awk -F- '{ print $1 }'`"
suf="`echo $devsuf | awk -F- '{ print $2 }'`"
- ipv6_add_route ${ipv6to4prefix}$suf :: $dev
+ ipv6_add_addr_on_device ${dev} ${ipv6to4prefix}${suf}
done
else
echo $"Error occurred while calculating the IPv6to4 prefix"
diff --git a/sysconfig/network-scripts/ifup-sit b/sysconfig/network-scripts/ifup-sit
index 80d5b963..4fa78eb5 100755
--- a/sysconfig/network-scripts/ifup-sit
+++ b/sysconfig/network-scripts/ifup-sit
@@ -4,11 +4,14 @@
#
#
# Taken from:
-# (P) & (C) 2000-2002 by Peter Bieringer <pb@bieringer.de>
+# (P) & (C) 2000-2003 by Peter Bieringer <pb@bieringer.de>
+#
+# You will find more information on the initscripts-ipv6 homepage at
+# http://www.deepspace6.net/projects/initscripts-ipv6.html
#
# RHL integration assistance by Pekka Savola <pekkas@netcore.fi>
#
-# Version 2002-12-04
+# Version 2003-09-08
#
# Uses following information from /etc/sysconfig/network:
# NETWORKING_IPV6=yes|no: controls IPv6 initialization (global setting)
@@ -19,8 +22,8 @@
# DEVICE=<device>
# IPV6INIT=yes|no: controls IPv6 configuration for this interface
# IPV6_MTU=<MTU for IPv6>: controls IPv6 MTU for this link (optional)
-#
-# For static tunnels
+#
+# For static tunnels
# IPV6TUNNELIPV4=<IPv4 address>: IPv4 address of remote tunnel endpoint
# IPV6TUNNELIPV4LOCAL=<IPv4 address>: (optional) local IPv4 address of tunnel
# IPV6ADDR=<IPv6 address>[/<prefix length>]: (optional) local IPv6 address of a numbered tunnel
@@ -28,10 +31,10 @@
#
-. /etc/sysconfig/network
+. /etc/sysconfig/network
cd /etc/sysconfig/network-scripts
-. network-functions
+. network-functions
CONFIG=$1
[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
diff --git a/sysconfig/network-scripts/network-functions-ipv6 b/sysconfig/network-scripts/network-functions-ipv6
index 153c05ea..5ee91187 100644
--- a/sysconfig/network-scripts/network-functions-ipv6
+++ b/sysconfig/network-scripts/network-functions-ipv6
@@ -8,7 +8,7 @@
# You will find more information on the initscripts-ipv6 homepage at
# http://www.deepspace6.net/projects/initscripts-ipv6.html
#
-# Version: 2005-03-03
+# Version: 2005-09-22
#
#
@@ -419,12 +419,12 @@ ipv6_cleanup_routes() {
if [ -n "$gatewaymatch" ]; then
# Get all IPv6 routes (except default link-local and multicast) through given interface via a given gateway and remove them
ipv6_exec_ip -6 route show dev $device via $gatewaymatch | LC_ALL=C grep -v -w expires | LC_ALL=C egrep -v "^fe80::/64|^ff00::/8" | while read ipv6net dummy; do
- ipv6_exec_ip -6 route del $ipv6net via $gatewaymatch dev $iface
+ ipv6_del_route $ipv6net $gatewaymatch $device
done
else
# Get all IPv6 routes (except default link-local and multicast) through given interface and remove them
ipv6_exec_ip -6 route show dev $device | LC_ALL=C grep -v -w expires | LC_ALL=C egrep -v "^fe80::/64|^ff00::/8" | while read ipv6net dummy; do
- ipv6_exec_ip -6 route del $ipv6net dev $iface
+ ipv6_del_route $ipv6net :: $device
done
fi
@@ -594,6 +594,35 @@ ipv6_cleanup_device() {
}
+## Remove all IPv6 6to4 related routes and addresses on given interface
+# $1: <Interface>
+# return code: 0=ok 1=argument error 2=IPv6 test fails 3=major problem
+ipv6_cleanup_6to4_device() {
+ local fn="ipv6_cleanup_6to4_device"
+
+ local device=$1
+
+ if [ -z "$device" ]; then
+ ipv6_log $"Missing parameter 'device' (arg 1)" err $fn
+ return 1
+ fi
+
+ ipv6_test testonly || return 2
+
+ # Cleanup 6to4 addresses on this device
+ ipv6_exec_ip -6 addr show dev $dev scope global permanent | LC_ALL=C grep -w inet6 | awk '{ print $2}' | LC_ALL=C grep "^2002:" | while read addr; do
+ ipv6_del_addr_on_device ${dev} ${addr}
+ done
+
+ # Get all IPv6 routes through given interface via a given gateway and remove them
+ ipv6_exec_ip -6 route show dev $device | LC_ALL=C grep "^2002:" | while read ipv6net dummy; do
+ ipv6_del_route $ipv6net :: $device
+ done
+
+ return 0
+}
+
+
## Remove an IPv6 address on given interface
# $1: <Interface>
# $2: <IPv6 address>
generated by cgit (git 2.34.1) at 2026-04-06 19:26:26 +0000
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/*
   SSSD

   Proxy Module

   Copyright (C) Simo Sorce <ssorce@redhat.com>	2008-2009

   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; either version 3 of the License, or
   (at your option) any later version.

   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.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <nss.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include <dlfcn.h>

#include <security/pam_appl.h>
#include <security/pam_modules.h>

#include "util/util.h"
#include "providers/dp_backend.h"
#include "db/sysdb.h"

struct proxy_nss_ops {
    enum nss_status (*getpwnam_r)(const char *name, struct passwd *result,
                                  char *buffer, size_t buflen, int *errnop);
    enum nss_status (*getpwuid_r)(uid_t uid, struct passwd *result,
                                  char *buffer, size_t buflen, int *errnop);
    enum nss_status (*setpwent)(void);
    enum nss_status (*getpwent_r)(struct passwd *result,
                                  char *buffer, size_t buflen, int *errnop);
    enum nss_status (*endpwent)(void);

    enum nss_status (*getgrnam_r)(const char *name, struct group *result,
                                  char *buffer, size_t buflen, int *errnop);
    enum nss_status (*getgrgid_r)(gid_t gid, struct group *result,
                                  char *buffer, size_t buflen, int *errnop);
    enum nss_status (*setgrent)(void);
    enum nss_status (*getgrent_r)(struct group *result,
                                  char *buffer, size_t buflen, int *errnop);
    enum nss_status (*endgrent)(void);
    enum nss_status (*initgroups_dyn)(const char *user, gid_t group,
                                      long int *start, long int *size,
                                      gid_t **groups, long int limit,
                                      int *errnop);
};

struct proxy_ctx {
    struct be_ctx *be;
    struct proxy_nss_ops ops;
};

struct proxy_auth_ctx {
    struct be_ctx *be;
    char *pam_target;
};

struct authtok_conv {
    uint32_t authtok_size;
    uint8_t *authtok;
};

static int proxy_internal_conv(int num_msg, const struct pam_message **msgm,
                            struct pam_response **response,
                            void *appdata_ptr) {
    int i;
    struct pam_response *reply;
    struct authtok_conv *auth_data;

    auth_data = talloc_get_type(appdata_ptr, struct authtok_conv);

    if (num_msg <= 0) return PAM_CONV_ERR;

    reply = (struct pam_response *) calloc(num_msg,
                                           sizeof(struct pam_response));
    if (reply == NULL) return PAM_CONV_ERR;

    for (i=0; i < num_msg; i++) {
        switch( msgm[i]->msg_style ) {
            case PAM_PROMPT_ECHO_OFF:
                DEBUG(4, ("Conversation message: [%s]\n", msgm[i]->msg));
                reply[i].resp_retcode = 0;
                reply[i].resp = calloc(auth_data->authtok_size + 1,
                                       sizeof(char));
                if (reply[i].resp == NULL) goto failed;
                memcpy(reply[i].resp, auth_data->authtok, auth_data->authtok_size);

                break;
            default:
                DEBUG(1, ("Conversation style %d not supported.\n",
                           msgm[i]->msg_style));
                goto failed;
        }
    }

    *response = reply;
    reply = NULL;

    return PAM_SUCCESS;

failed:
    free(reply);
    return PAM_CONV_ERR;
}

static void proxy_pam_handler_cache_done(struct tevent_req *treq);
static void proxy_reply(struct be_req *req,
                        int error, const char *errstr);

static void proxy_pam_handler(struct be_req *req) {
    int ret;
    int pam_status;
    pam_handle_t *pamh=NULL;
    struct authtok_conv *auth_data;
    struct pam_conv conv;
    struct pam_data *pd;
    struct proxy_auth_ctx *ctx;;
    bool cache_auth_data = false;

    ctx = talloc_get_type(req->be_ctx->bet_info[BET_AUTH].pvt_bet_data, struct proxy_auth_ctx);
    pd = talloc_get_type(req->req_data, struct pam_data);

    conv.conv=proxy_internal_conv;
    auth_data = talloc_zero(req, struct authtok_conv);
    conv.appdata_ptr=auth_data;

    ret = pam_start(ctx->pam_target, pd->user, &conv, &pamh);
    if (ret == PAM_SUCCESS) {
        DEBUG(1, ("Pam transaction started.\n"));
        pam_set_item(pamh, PAM_TTY, pd->tty);
        if (ret != PAM_SUCCESS) {
            DEBUG(1, ("Setting PAM_TTY failed: %s.\n", pam_strerror(pamh, ret)));
        }
        pam_set_item(pamh, PAM_RUSER, pd->ruser);
        if (ret != PAM_SUCCESS) {
            DEBUG(1, ("Setting PAM_RUSER failed: %s.\n", pam_strerror(pamh, ret)));
        }
        pam_set_item(pamh, PAM_RHOST, pd->rhost);
        if (ret != PAM_SUCCESS) {
            DEBUG(1, ("Setting PAM_RHOST failed: %s.\n", pam_strerror(pamh, ret)));
        }
        switch (pd->cmd) {
            case SSS_PAM_AUTHENTICATE:
                auth_data->authtok_size = pd->authtok_size;
                auth_data->authtok = pd->authtok;
                pam_status = pam_authenticate(pamh, 0);
                if ((pam_status == PAM_SUCCESS) &&
                    (req->be_ctx->domain->cache_credentials)) {
                    cache_auth_data = true;
                }
                break;
            case SSS_PAM_SETCRED:
                pam_status=pam_setcred(pamh, 0);
                break;
            case SSS_PAM_ACCT_MGMT:
                pam_status=pam_acct_mgmt(pamh, 0);
                break;
            case SSS_PAM_OPEN_SESSION:
                pam_status=pam_open_session(pamh, 0);
                break;
            case SSS_PAM_CLOSE_SESSION:
                pam_status=pam_close_session(pamh, 0);
                break;
            case SSS_PAM_CHAUTHTOK:
                if (pd->priv != 1) {
                    auth_data->authtok_size = pd->authtok_size;
                    auth_data->authtok = pd->authtok;
                    pam_status = pam_authenticate(pamh, 0);
                    if (pam_status != PAM_SUCCESS) break;
                }
                auth_data->authtok_size = pd->newauthtok_size;
                auth_data->authtok = pd->newauthtok;
                pam_status = pam_chauthtok(pamh, 0);
                if ((pam_status == PAM_SUCCESS) &&
                    (req->be_ctx->domain->cache_credentials)) {
                    cache_auth_data = true;
                }
                break;
            default:
                DEBUG(1, ("unknown PAM call"));
                pam_status=PAM_ABORT;
        }

        DEBUG(4, ("Pam result: [%d][%s]\n", pam_status, pam_strerror(pamh, pam_status)));

        if (pam_status == PAM_AUTHINFO_UNAVAIL) {
            be_mark_offline(req->be_ctx);
        }

        ret = pam_end(pamh, pam_status);
        if (ret != PAM_SUCCESS) {
            pamh=NULL;
            DEBUG(1, ("Cannot terminate pam transaction.\n"));
        }

    } else {
        DEBUG(1, ("Failed to initialize pam transaction.\n"));
        pam_status = PAM_SYSTEM_ERR;
    }

    pd->pam_status = pam_status;

    if (cache_auth_data) {
        struct tevent_req *subreq;
        char *password;

        password = talloc_size(req, auth_data->authtok_size + 1);
        if (!password) {
            /* password caching failures are not fatal errors */
            return proxy_reply(req, EOK, NULL);
        }
        memcpy(password, auth_data->authtok, auth_data->authtok_size);
        password[auth_data->authtok_size] = '\0';
        talloc_set_destructor((TALLOC_CTX *)password, password_destructor);

        subreq = sysdb_cache_password_send(req, req->be_ctx->ev,
                                           req->be_ctx->sysdb, NULL,
                                           req->be_ctx->domain,
                                           pd->user, password);
        if (!subreq) {
            /* password caching failures are not fatal errors */
            return proxy_reply(req, EOK, NULL);
        }
        tevent_req_set_callback(subreq, proxy_pam_handler_cache_done, req);
    }

    proxy_reply(req, EOK, NULL);
}

static void proxy_pam_handler_cache_done(struct tevent_req *subreq)
{
    struct be_req *req = tevent_req_callback_data(subreq, struct be_req);
    int ret;

    /* password caching failures are not fatal errors */
    ret = sysdb_cache_password_recv(subreq);
    talloc_zfree(subreq);

    /* so we just log it any return */
    if (ret) {
        DEBUG(2, ("Failed to cache password (%d)[%s]!?\n",
                  ret, strerror(ret)));
    }

    return proxy_reply(req, EOK, NULL);
}

static void proxy_reply(struct be_req *req, int error, const char *errstr)
{
    if (error && !errstr) errstr = "Operation failed";
    return req->fn(req, error, errstr);
}

/* =Common-proxy-tevent_req-utils=========================================*/

#define DEFAULT_BUFSIZE 4096
#define MAX_BUF_SIZE 1024*1024 /* max 1MiB */

struct proxy_state {
    struct tevent_context *ev;
    struct proxy_ctx *ctx;
    struct sysdb_ctx *sysdb;
    struct sss_domain_info *domain;
    const char *name;

    struct sysdb_handle *handle;
    struct passwd *pwd;
    struct group *grp;
    uid_t uid;
    gid_t gid;
};

static void proxy_default_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    int ret;

    ret = sysdb_transaction_commit_recv(subreq);
    talloc_zfree(subreq);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }

    tevent_req_done(req);
}

static int proxy_default_recv(struct tevent_req *req)
{
    enum tevent_req_state tstate;
    uint64_t err = 0;

    if (tevent_req_is_error(req, &tstate, &err)) {
        if (err != 0) return err;
        return EIO;
    }

    return EOK;
}


/* =Getpwnam-wrapper======================================================*/

static void get_pw_name_process(struct tevent_req *subreq);
static void get_pw_name_remove_done(struct tevent_req *subreq);
static void get_pw_name_add_done(struct tevent_req *subreq);

static struct tevent_req *get_pw_name_send(TALLOC_CTX *mem_ctx,
                                           struct tevent_context *ev,
                                           struct proxy_ctx *ctx,
                                           struct sysdb_ctx *sysdb,
                                           struct sss_domain_info *domain,
                                           const char *name)
{
    struct tevent_req *req, *subreq;
    struct proxy_state *state;

    req = tevent_req_create(mem_ctx, &state, struct proxy_state);
    if (!req) return NULL;

    memset(state, 0, sizeof(struct proxy_state));

    state->ev = ev;
    state->ctx = ctx;
    state->sysdb = sysdb;
    state->domain = domain;
    state->name = name;

    subreq = sysdb_transaction_send(state, state->ev, state->sysdb);
    if (!subreq) {
        talloc_zfree(req);
        return NULL;
    }
    tevent_req_set_callback(subreq, get_pw_name_process, req);

    return req;
}

static void get_pw_name_process(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct proxy_state *state = tevent_req_data(req,
                                                struct proxy_state);
    struct proxy_ctx *ctx = state->ctx;
    enum nss_status status;
    char *buffer;
    size_t buflen;
    bool delete_user = false;
    int ret;

    DEBUG(7, ("Searching user by name (%s)\n", state->name));

    ret = sysdb_transaction_recv(subreq, state, &state->handle);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }
    talloc_zfree(subreq);

    state->pwd = talloc(state, struct passwd);
    if (!state->pwd) {
        tevent_req_error(req, ENOMEM);
        return;
    }

    buflen = DEFAULT_BUFSIZE;
    buffer = talloc_size(state, buflen);
    if (!buffer) {
        tevent_req_error(req, ENOMEM);
        return;
    }

    /* FIXME: should we move this call outside the transaction to keep the
     * transaction as short as possible ? */
    status = ctx->ops.getpwnam_r(state->name, state->pwd,
                                 buffer, buflen, &ret);

    switch (status) {
    case NSS_STATUS_NOTFOUND:

        DEBUG(7, ("User %s not found.\n", state->name));
        delete_user = true;
        break;

    case NSS_STATUS_SUCCESS:

        DEBUG(7, ("User %s found: (%s, %d, %d)\n",
                  state->name, state->pwd->pw_name,
                  state->pwd->pw_uid, state->pwd->pw_gid));

        /* uid=0 or gid=0 are invalid values */
        if (state->pwd->pw_uid == 0 || state->pwd->pw_gid == 0) {
            delete_user = true;
            break;
        }

        subreq = sysdb_store_user_send(state, state->ev, state->handle,
                                       state->domain,
                                       state->pwd->pw_name,
                                       state->pwd->pw_passwd,
                                       state->pwd->pw_uid,
                                       state->pwd->pw_gid,
                                       state->pwd->pw_gecos,
                                       state->pwd->pw_dir,
                                       state->pwd->pw_shell, NULL);
        if (!subreq) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        tevent_req_set_callback(subreq, get_pw_name_add_done, req);
        return;

    case NSS_STATUS_UNAVAIL:
        /* "remote" backend unavailable. Enter offline mode */
        tevent_req_error(req, ENXIO);
        return;

    default:
        DEBUG(2, ("proxy -> getpwnam_r failed for '%s' <%d>\n",
                  state->name, status));
        tevent_req_error(req, EIO);
        return;
    }

    if (delete_user) {
        struct ldb_dn *dn;

        DEBUG(7, ("User %s does not exist (or is invalid) on remote server,"
                  " deleting!\n", state->name));

        dn = sysdb_user_dn(state->sysdb, state,
                           state->domain->name, state->name);
        if (!dn) {
            tevent_req_error(req, ENOMEM);
            return;
        }

        subreq = sysdb_delete_entry_send(state, state->ev, state->handle, dn, true);
        if (!subreq) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        tevent_req_set_callback(subreq, get_pw_name_remove_done, req);
    }
}

static void get_pw_name_add_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct proxy_state *state = tevent_req_data(req,
                                                struct proxy_state);
    int ret;

    ret = sysdb_store_user_recv(subreq);
    talloc_zfree(subreq);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }

    subreq = sysdb_transaction_commit_send(state, state->ev, state->handle);
    if (!subreq) {
        tevent_req_error(req, ENOMEM);
        return;
    }
    tevent_req_set_callback(subreq, proxy_default_done, req);
}

static void get_pw_name_remove_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct proxy_state *state = tevent_req_data(req,
                                                struct proxy_state);
    int ret;

    ret = sysdb_delete_entry_recv(subreq);
    talloc_zfree(subreq);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }

    subreq = sysdb_transaction_commit_send(state, state->ev, state->handle);
    if (!subreq) {
        tevent_req_error(req, ENOMEM);
        return;
    }
    tevent_req_set_callback(subreq, proxy_default_done, req);
}

/* =Getpwuid-wrapper======================================================*/

static void get_pw_uid_process(struct tevent_req *subreq);
static void get_pw_uid_remove_done(struct tevent_req *subreq);

static struct tevent_req *get_pw_uid_send(TALLOC_CTX *mem_ctx,
                                           struct tevent_context *ev,
                                           struct proxy_ctx *ctx,
                                           struct sysdb_ctx *sysdb,
                                           struct sss_domain_info *domain,
                                           uid_t uid)
{
    struct tevent_req *req, *subreq;
    struct proxy_state *state;

    req = tevent_req_create(mem_ctx, &state, struct proxy_state);
    if (!req) return NULL;

    memset(state, 0, sizeof(struct proxy_state));

    state->ev = ev;
    state->ctx = ctx;
    state->sysdb = sysdb;
    state->domain = domain;
    state->uid = uid;

    subreq = sysdb_transaction_send(state, state->ev, state->sysdb);
    if (!subreq) {
        talloc_zfree(req);
        return NULL;
    }
    tevent_req_set_callback(subreq, get_pw_uid_process, req);

    return req;
}

static void get_pw_uid_process(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct proxy_state *state = tevent_req_data(req,
                                                struct proxy_state);
    struct proxy_ctx *ctx = state->ctx;
    enum nss_status status;
    char *buffer;
    size_t buflen;
    bool delete_user = false;
    int ret;

    DEBUG(7, ("Searching user by uid (%d)\n", state->uid));

    ret = sysdb_transaction_recv(subreq, state, &state->handle);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }
    talloc_zfree(subreq);

    state->pwd = talloc(state, struct passwd);
    if (!state->pwd) {
        tevent_req_error(req, ENOMEM);
        return;
    }

    buflen = DEFAULT_BUFSIZE;
    buffer = talloc_size(state, buflen);
    if (!buffer) {
        tevent_req_error(req, ENOMEM);
        return;
    }

    /* always zero out the pwd structure */
    memset(state->pwd, 0, sizeof(struct passwd));

    status = ctx->ops.getpwuid_r(state->uid, state->pwd,
                                 buffer, buflen, &ret);

    switch (status) {
    case NSS_STATUS_NOTFOUND:

        DEBUG(7, ("User %d not found.\n", state->uid));
        delete_user = true;
        break;

    case NSS_STATUS_SUCCESS:

        DEBUG(7, ("User %d found (%s, %d, %d)\n",
                  state->uid, state->pwd->pw_name,
                  state->pwd->pw_uid, state->pwd->pw_gid));

        /* uid=0 or gid=0 are invalid values */
        if (state->pwd->pw_uid == 0 || state->pwd->pw_gid == 0) {
            delete_user = true;
            break;
        }

        subreq = sysdb_store_user_send(state, state->ev, state->handle,
                                       state->domain,
                                       state->pwd->pw_name,
                                       state->pwd->pw_passwd,
                                       state->pwd->pw_uid,
                                       state->pwd->pw_gid,
                                       state->pwd->pw_gecos,
                                       state->pwd->pw_dir,
                                       state->pwd->pw_shell, NULL);
        if (!subreq) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        tevent_req_set_callback(subreq, get_pw_name_add_done, req);
        return;

    case NSS_STATUS_UNAVAIL:
        /* "remote" backend unavailable. Enter offline mode */
        tevent_req_error(req, ENXIO);
        return;

    default:
        DEBUG(2, ("proxy -> getpwnam_r failed for '%s' <%d>\n",
                  state->name, status));
        tevent_req_error(req, EIO);
        return;
    }

    if (delete_user) {
        DEBUG(7, ("User %d does not exist (or is invalid) on remote server,"
                  " deleting!\n", state->uid));

        subreq = sysdb_delete_user_by_uid_send(state, state->ev,
                                               state->handle,
                                               state->domain,
                                               state->uid,
                                               true);
        if (!subreq) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        tevent_req_set_callback(subreq, get_pw_uid_remove_done, req);
    }
}

static void get_pw_uid_remove_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct proxy_state *state = tevent_req_data(req,
                                                struct proxy_state);
    int ret;

    ret = sysdb_delete_user_by_uid_recv(subreq);
    talloc_zfree(subreq);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }

    subreq = sysdb_transaction_commit_send(state, state->ev, state->handle);
    if (!subreq) {
        tevent_req_error(req, ENOMEM);
        return;
    }
    tevent_req_set_callback(subreq, proxy_default_done, req);
}

/* =Getpwent-wrapper======================================================*/

struct enum_users_state {
    struct tevent_context *ev;
    struct proxy_ctx *ctx;
    struct sysdb_ctx *sysdb;
    struct sss_domain_info *domain;
    struct sysdb_handle *handle;

    struct passwd *pwd;

    size_t buflen;
    char *buffer;

    bool in_transaction;
};

static void enum_users_process(struct tevent_req *subreq);

static struct tevent_req *enum_users_send(TALLOC_CTX *mem_ctx,
                                          struct tevent_context *ev,
                                          struct proxy_ctx *ctx,
                                          struct sysdb_ctx *sysdb,
                                          struct sss_domain_info *domain)
{
    struct tevent_req *req, *subreq;
    struct enum_users_state *state;
    enum nss_status status;

    DEBUG(7, ("Enumerating users\n"));

    req = tevent_req_create(mem_ctx, &state, struct enum_users_state);
    if (!req) return NULL;

    state->ev = ev;
    state->ctx = ctx;
    state->sysdb = sysdb;
    state->domain = domain;
    state->handle = NULL;

    state->pwd = talloc(state, struct passwd);
    if (!state->pwd) {
        tevent_req_error(req, ENOMEM);
        goto fail;
    }

    state->buflen = DEFAULT_BUFSIZE;
    state->buffer = talloc_size(state, state->buflen);
    if (!state->buffer) {
        tevent_req_error(req, ENOMEM);
        goto fail;
    }

    state->in_transaction = false;

    status = ctx->ops.setpwent();
    if (status != NSS_STATUS_SUCCESS) {
        tevent_req_error(req, EIO);
        goto fail;
    }

    subreq = sysdb_transaction_send(state, state->ev, state->sysdb);
    if (!subreq) {
        tevent_req_error(req, ENOMEM);
        goto fail;
    }
    tevent_req_set_callback(subreq, enum_users_process, req);

    return req;

fail:
    tevent_req_post(req, ev);
    return req;
}

static void enum_users_process(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct enum_users_state *state = tevent_req_data(req,
                                                struct enum_users_state);
    struct proxy_ctx *ctx = state->ctx;
    enum nss_status status;
    char *newbuf;
    int ret;

    if (!state->in_transaction) {
        ret = sysdb_transaction_recv(subreq, state, &state->handle);
        if (ret) {
            goto fail;
        }
        talloc_zfree(subreq);

        state->in_transaction = true;
    } else {
        ret = sysdb_store_user_recv(subreq);
        if (ret) {
            /* Do not fail completely on errors.
             * Just report the failure to save and go on */
            DEBUG(2, ("Failed to store user. Ignoring.\n"));
        }
        talloc_zfree(subreq);
    }

again:
    /* always zero out the pwd structure */
    memset(state->pwd, 0, sizeof(struct passwd));

    /* get entry */
    status = ctx->ops.getpwent_r(state->pwd,
                                 state->buffer, state->buflen, &ret);

    switch (status) {
    case NSS_STATUS_TRYAGAIN:
        /* buffer too small ? */
        if (state->buflen < MAX_BUF_SIZE) {
            state->buflen *= 2;
        }
        if (state->buflen > MAX_BUF_SIZE) {
            state->buflen = MAX_BUF_SIZE;
        }
        newbuf = talloc_realloc_size(state, state->buffer, state->buflen);
        if (!newbuf) {
            ret = ENOMEM;
            goto fail;
        }
        state->buffer = newbuf;
        goto again;

    case NSS_STATUS_NOTFOUND:

        /* we are done here */
        DEBUG(7, ("Enumeration completed.\n"));

        ctx->ops.endpwent();
        subreq = sysdb_transaction_commit_send(state, state->ev,
                                               state->handle);
        if (!subreq) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        tevent_req_set_callback(subreq, proxy_default_done, req);
        return;

    case NSS_STATUS_SUCCESS:

        DEBUG(7, ("User found (%s, %d, %d)\n", state->pwd->pw_name,
                  state->pwd->pw_uid, state->pwd->pw_gid));

        /* uid=0 or gid=0 are invalid values */
        if (state->pwd->pw_uid == 0 || state->pwd->pw_gid == 0) {
            goto again; /* skip */
        }

        subreq = sysdb_store_user_send(state, state->ev, state->handle,
                                       state->domain,
                                       state->pwd->pw_name,
                                       state->pwd->pw_passwd,
                                       state->pwd->pw_uid,
                                       state->pwd->pw_gid,
                                       state->pwd->pw_gecos,
                                       state->pwd->pw_dir,
                                       state->pwd->pw_shell, NULL);
        if (!subreq) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        tevent_req_set_callback(subreq, enum_users_process, req);
        return;

    case NSS_STATUS_UNAVAIL:
        /* "remote" backend unavailable. Enter offline mode */
        ret = ENXIO;
        goto fail;

    default:
        DEBUG(2, ("proxy -> getpwent_r failed (%d)[%s]\n",
                  ret, strerror(ret)));
        goto fail;
    }

fail:
    ctx->ops.endpwent();
    tevent_req_error(req, ret);
}

/* =Getgrnam-wrapper======================================================*/

#define DEBUG_GR_MEM(level, state) \
    do { \
        if (debug_level >= level) { \
            if (!state->grp->gr_mem || !state->grp->gr_mem[0]) { \
                DEBUG(level, ("Group %s has no members!\n", \
                              state->grp->gr_name)); \
            } else { \
                int i = 0; \
                while (state->grp->gr_mem[i]) { \
                    /* count */ \
                    i++; \
                } \
                DEBUG(level, ("Group %s has %d members!\n", \
                              state->grp->gr_name, i)); \
            } \
        } \
    } while(0)

static void get_gr_name_process(struct tevent_req *subreq);
static void get_gr_name_remove_done(struct tevent_req *subreq);
static void get_gr_name_add_done(struct tevent_req *subreq);

static struct tevent_req *get_gr_name_send(TALLOC_CTX *mem_ctx,
                                           struct tevent_context *ev,
                                           struct proxy_ctx *ctx,
                                           struct sysdb_ctx *sysdb,
                                           struct sss_domain_info *domain,
                                           const char *name)
{
    struct tevent_req *req, *subreq;
    struct proxy_state *state;

    req = tevent_req_create(mem_ctx, &state, struct proxy_state);
    if (!req) return NULL;

    memset(state, 0, sizeof(struct proxy_state));

    state->ev = ev;
    state->ctx = ctx;
    state->sysdb = sysdb;
    state->domain = domain;
    state->name = name;

    subreq = sysdb_transaction_send(state, state->ev, state->sysdb);
    if (!subreq) {
        talloc_zfree(req);
        return NULL;
    }
    tevent_req_set_callback(subreq, get_gr_name_process, req);

    return req;
}

static void get_gr_name_process(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                      struct tevent_req);
    struct proxy_state *state = tevent_req_data(req,
                                                struct proxy_state);
    struct proxy_ctx *ctx = state->ctx;
    enum nss_status status;
    char *buffer;
    char *newbuf;
    size_t buflen;
    bool delete_group = false;
    const char **members;
    int ret;

    DEBUG(7, ("Searching group by name (%s)\n", state->name));

    ret = sysdb_transaction_recv(subreq, state, &state->handle);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }
    talloc_zfree(subreq);

    state->grp = talloc(state, struct group);
    if (!state->grp) {
        tevent_req_error(req, ENOMEM);
        return;
    }

    buflen = DEFAULT_BUFSIZE;
    buffer = talloc_size(state, buflen);
    if (!buffer) {
        tevent_req_error(req, ENOMEM);
        return;
    }

    /* FIXME: should we move this call outside the transaction to keep the
     * transaction as short as possible ? */
again:
    /* always zero out the grp structure */
    memset(state->grp, 0, sizeof(struct group));

    status = ctx->ops.getgrnam_r(state->name, state->grp,
                                 buffer, buflen, &ret);

    switch (status) {
    case NSS_STATUS_TRYAGAIN:
        /* buffer too small ? */
        if (buflen < MAX_BUF_SIZE) {
            buflen *= 2;
        }
        if (buflen > MAX_BUF_SIZE) {
            buflen = MAX_BUF_SIZE;
        }
        newbuf = talloc_realloc_size(state, buffer, buflen);
        if (!newbuf) {
            tevent_req_error(req, ENOMEM);
            return;
        }
        buffer = newbuf;
        goto again;

    case NSS_STATUS_NOTFOUND:

        DEBUG(7, ("Group %s not found.\n", state->name));
        delete_group = true;
        break;

    case NSS_STATUS_SUCCESS:

        DEBUG(7, ("Group %s found: (%s, %d)\n", state->name,
                  state->grp->gr_name, state->grp->gr_gid));

        /* gid=0 is an invalid value */
        if (state->grp->gr_gid == 0) {
            delete_group = true;
            break;
        }

        DEBUG_GR_MEM(7, state);

        if (state->grp->gr_mem && state->grp->gr_mem[0]) {