Contents of /resolvconf/trunk/debian/postinst

#!/bin/sh

set -e

. /usr/share/debconf/confmodule

MYNAME=resolvconf.postinst
report() { echo "${MYNAME}: $*" ; }
report_err() { report "Error: $*" >&2 ; }
report_info() { report "$*" >&2 ; }

standard_run_subdirs_created() {
        { [ -d /run/resolvconf ] || mkdir /run/resolvconf ; } \
        && { [ -d /run/resolvconf/interface ] || mkdir /run/resolvconf/interface ; }
}

# We use dh_installinit with --no-start
#DEBHELPER#


### Symlink ###

case "$1" in
  configure)
        if [ -L /etc/resolvconf/run ] ; then
                # Make sure that the symlink is canonicalizable.
                RUN_CANONICALPATH="$(readlink -f /etc/resolvconf/run || :)"
                if [ -z "$RUN_CANONICALPATH" ] ; then
                        # It's not canonicalizable
                        report_err "Deleting old symlink /etc/resolvconf/run, the canonical path of whose target could not be determined"
                        rm -f /etc/resolvconf/run
                fi
        fi

        # /etc/resolvconf/run is not a non-canonicalizable symlink.
        # Attempt migration to new standard location
        if [ -L /etc/resolvconf/run ] ; then
                # It's a canonicalizable symlink
                # If it's standard then try to migrate from old to new standard location.
                # The initscripts package guarantees that the new standard location is available.
                if
                        [ "$RUN_CANONICALPATH" = "/lib/init/rw/resolvconf" ] \
                        && standard_run_subdirs_created
                then
                        # /etc/resolvconf/run points to the old-standard location
                        # and new-standard run directories are ready for use.
                        # Switch from the old to the new standard location.
                        F="$(echo /lib/init/rw/resolvconf/*)"
                        if [ "$F" ] && [ "$F" != '/lib/init/rw/resolvconf/*' ] ; then
                                if cp -a /lib/init/rw/resolvconf/* /run/resolvconf ; then
                                        report_info "Migrated resolvconf run-time data from /lib/init/rw/resolvconf to /run/resolvconf"
                                fi
                        fi
                        ln -nsf /run/resolvconf /etc/resolvconf/run
                fi
        elif [ -d /etc/resolvconf/run ] ; then
                # It's a directory right in /etc/resolvconf
                # The initscripts package guarantees that the new standard location is available.
                if standard_run_subdirs_created ; then
                        # /etc/resolvconf/run is a directory in /etc/resolvconf
                        # and new-standard run directories are ready for use.
                        # Switch to the new standard location.
                        F="$(echo /etc/resolvconf/run/*)"
                        if [ "$F" ] && [ "$F" != '/etc/resolvconf/run/*' ] ; then
                                if cp -a /etc/resolvconf/run/* /run/resolvconf ; then
                                        report_info "Migrated resolvconf run-time data from /etc/resolvconf/run to /run/resolvconf"
                                        rm -rf /etc/resolvconf/run
                                fi
                        else
                                rmdir /etc/resolvconf/run
                        fi
                        ln -nsf /run/resolvconf /etc/resolvconf/run
                fi
        fi

        # Link tail to original if appropriate
        if [ ! -e /etc/resolvconf/resolv.conf.d/tail ] ; then
                db_get resolvconf/link-tail-to-original
                if [ "$RET" = "true" ] ; then
                        ln -nsf original /etc/resolvconf/resolv.conf.d/tail
                else
                        : > /etc/resolvconf/resolv.conf.d/tail
                fi
        fi

        # Linkify /etc/resolv.conf if appropriate
        db_get resolvconf/linkify-resolvconf
        if [ "$RET" = "true" ] ; then
                if
                        [ -f /etc/resolv.conf ] \
                        && {
                                [ ! -L /etc/resolv.conf ] \
                                || [ ! "$(readlink /etc/resolv.conf)" = "/etc/resolvconf/run/resolv.conf" ]
                        }
                then
                        # Back up original file
                        if [ ! -e /etc/resolvconf/resolv.conf.d/original ] ; then
                                cp -a /etc/resolv.conf /etc/resolvconf/resolv.conf.d/original
                        else
                                cp -a /etc/resolv.conf /etc/resolv.conf.dpkg-old
                        fi
                        # Before creating the link, make sure that the original file is
                        # at the target of the link.  /sbin/resolvconf will overwrite
                        # this when it does an update, of course.
                        if [ ! -e /etc/resolvconf/run/resolv.conf ] ; then
                                cp -a /etc/resolv.conf /etc/resolvconf/run/resolv.conf
                        fi
                        # Add the original file to the database so that its contents
                        # are included when resolvconf updates.
                        # Yes, this is an ugly workaround for the problem that there
                        # is no way to obtain nameserver information from interface
                        # configurers after they have done their configuration work.
                        cp -a /etc/resolv.conf /etc/resolvconf/run/interface/original.resolvconf
                fi
                # Create the link
                ln -nsf /etc/resolvconf/run/resolv.conf /etc/resolv.conf
        fi
        ;;
  # triggered)
        # Don't do anything here
        # ;;
  # abort-upgrade)
        # Don't do anything here since we don't do anything in the prerm on upgrade or on failed-upgrade
        # ;;
  # abort-remove)
        # Don't do anything extra here since we don't deconfigure anything in the prerm on remove
        # ;;
  # abort-deconfigure)
        # Don't do anything extra here since we don't do anything in the prerm on deconfigure
        # ;;
esac

db_stop


### Notify others of our installation ###

is_installed() {
        # Same function in preinst, postinst, postrm
        [ "$1" ] || return 1
        dpkg-query -W -f='${Status}\n' "$1" 2>/dev/null | grep -siq '^[[:alpha:]]\+ [[:alpha:]]\+ installed$' >/dev/null 2>&1
}

case "$1" in
  configure)
        PACKAGES_TO_NOTIFY=""
        [ -r /etc/resolvconf/run/packages-to-notify ] && PACKAGES_TO_NOTIFY="$(cat /etc/resolvconf/run/packages-to-notify)"
        rm -f /etc/resolvconf/run/packages-to-notify
        for PKG in $PACKAGES_TO_NOTIFY ; do
                if is_installed "$PKG" ; then
                        SCRPT="/etc/resolvconf/install-remove.d/$PKG"
                        [ -x "$SCRPT" ] && "$SCRPT" install
                fi 
        done
        ;;
  # triggered)
        # Don't do anything
        # ;;
  # abort-upgrade)
        # Don't do anything here since we don't do anything in the prerm on upgrade or on failed-upgrade
        # ;;
  # abort-remove)
        # Don't do anything extra here since we don't deconfigure anything in the prerm on remove
        # ;;
  # abort-deconfigure)
        # Don't do anything extra here since we don't do anything in the prerm on deconfigure
        # ;;
esac


### Trigger self to enable updates ###

enable_updates() {
        if [ -x "/etc/init.d/resolvconf" ] ; then
                if which invoke-rc.d >/dev/null 2>&1 ; then
                        invoke-rc.d resolvconf enable-updates || :
                else
                        /etc/init.d/resolvconf enable-updates
                fi
        fi
}

case "$1" in
  configure)
        # Trigger self
        dpkg-trigger resolvconf-enable-updates
        ;;
  triggered)
        # Runs after this and other packages have been configured
        for trigger in $2 ; do
                case "$trigger" in
                  resolvconf-enable-updates)
                        if [ -x /sbin/resolvconf ] ; then
                                enable_updates
                                break
                        fi
                        ;;
                esac
        done
        ;;
  abort-remove)
        # We disable updates in the prerm on remove.
        # So, enable them again
        enable_updates
        ;;
  # abort-upgrade)
        # Don't do anything here since we don't do anything in the prerm on upgrade or on failed-upgrade
        # ;;
  # abort-deconfigure)
        # Don't do anything extra here since we don't do anything in the prerm on deconfigure
        # ;;
esac

1	#!/bin/sh
2
3	set -e
4
5	. /usr/share/debconf/confmodule
6
7	MYNAME=resolvconf.postinst
8	report() { echo "${MYNAME}: $*" ; }
9	report_err() { report "Error: $*" >&2 ; }
10	report_info() { report "$*" >&2 ; }
11
12	standard_run_subdirs_created() {
13	{ [ -d /run/resolvconf ] \|\| mkdir /run/resolvconf ; } \
14	&& { [ -d /run/resolvconf/interface ] \|\| mkdir /run/resolvconf/interface ; }
15	}
16
17	# We use dh_installinit with --no-start
18	#DEBHELPER#
19
20
21	### Symlink ###
22
23	case "$1" in
24	configure)
25	if [ -L /etc/resolvconf/run ] ; then
26	# Make sure that the symlink is canonicalizable.
27	RUN_CANONICALPATH="$(readlink -f /etc/resolvconf/run \|\| :)"
28	if [ -z "$RUN_CANONICALPATH" ] ; then
29	# It's not canonicalizable
30	report_err "Deleting old symlink /etc/resolvconf/run, the canonical path of whose target could not be determined"
31	rm -f /etc/resolvconf/run
32	fi
33	fi
34
35	# /etc/resolvconf/run is not a non-canonicalizable symlink.
36	# Attempt migration to new standard location
37	if [ -L /etc/resolvconf/run ] ; then
38	# It's a canonicalizable symlink
39	# If it's standard then try to migrate from old to new standard location.
40	# The initscripts package guarantees that the new standard location is available.
41	if
42	[ "$RUN_CANONICALPATH" = "/lib/init/rw/resolvconf" ] \
43	&& standard_run_subdirs_created
44	then
45	# /etc/resolvconf/run points to the old-standard location
46	# and new-standard run directories are ready for use.
47	# Switch from the old to the new standard location.
48	F="$(echo /lib/init/rw/resolvconf/*)"
49	if [ "$F" ] && [ "$F" != '/lib/init/rw/resolvconf/*' ] ; then
50	if cp -a /lib/init/rw/resolvconf/* /run/resolvconf ; then
51	report_info "Migrated resolvconf run-time data from /lib/init/rw/resolvconf to /run/resolvconf"
52	fi
53	fi
54	ln -nsf /run/resolvconf /etc/resolvconf/run
55	fi
56	elif [ -d /etc/resolvconf/run ] ; then
57	# It's a directory right in /etc/resolvconf
58	# The initscripts package guarantees that the new standard location is available.
59	if standard_run_subdirs_created ; then
60	# /etc/resolvconf/run is a directory in /etc/resolvconf
61	# and new-standard run directories are ready for use.
62	# Switch to the new standard location.
63	F="$(echo /etc/resolvconf/run/*)"
64	if [ "$F" ] && [ "$F" != '/etc/resolvconf/run/*' ] ; then
65	if cp -a /etc/resolvconf/run/* /run/resolvconf ; then
66	report_info "Migrated resolvconf run-time data from /etc/resolvconf/run to /run/resolvconf"
67	rm -rf /etc/resolvconf/run
68	fi
69	else
70	rmdir /etc/resolvconf/run
71	fi
72	ln -nsf /run/resolvconf /etc/resolvconf/run
73	fi
74	fi
75
76	# Link tail to original if appropriate
77	if [ ! -e /etc/resolvconf/resolv.conf.d/tail ] ; then
78	db_get resolvconf/link-tail-to-original
79	if [ "$RET" = "true" ] ; then
80	ln -nsf original /etc/resolvconf/resolv.conf.d/tail
81	else
82	: > /etc/resolvconf/resolv.conf.d/tail
83	fi
84	fi
85
86	# Linkify /etc/resolv.conf if appropriate
87	db_get resolvconf/linkify-resolvconf
88	if [ "$RET" = "true" ] ; then
89	if
90	[ -f /etc/resolv.conf ] \
91	&& {
92	[ ! -L /etc/resolv.conf ] \
93	\|\| [ ! "$(readlink /etc/resolv.conf)" = "/etc/resolvconf/run/resolv.conf" ]
94	}
95	then
96	# Back up original file
97	if [ ! -e /etc/resolvconf/resolv.conf.d/original ] ; then
98	cp -a /etc/resolv.conf /etc/resolvconf/resolv.conf.d/original
99	else
100	cp -a /etc/resolv.conf /etc/resolv.conf.dpkg-old
101	fi
102	# Before creating the link, make sure that the original file is
103	# at the target of the link. /sbin/resolvconf will overwrite
104	# this when it does an update, of course.
105	if [ ! -e /etc/resolvconf/run/resolv.conf ] ; then
106	cp -a /etc/resolv.conf /etc/resolvconf/run/resolv.conf
107	fi
108	# Add the original file to the database so that its contents
109	# are included when resolvconf updates.
110	# Yes, this is an ugly workaround for the problem that there
111	# is no way to obtain nameserver information from interface
112	# configurers after they have done their configuration work.
113	cp -a /etc/resolv.conf /etc/resolvconf/run/interface/original.resolvconf
114	fi
115	# Create the link
116	ln -nsf /etc/resolvconf/run/resolv.conf /etc/resolv.conf
117	fi
118	;;
119	# triggered)
120	# Don't do anything here
121	# ;;
122	# abort-upgrade)
123	# Don't do anything here since we don't do anything in the prerm on upgrade or on failed-upgrade
124	# ;;
125	# abort-remove)
126	# Don't do anything extra here since we don't deconfigure anything in the prerm on remove
127	# ;;
128	# abort-deconfigure)
129	# Don't do anything extra here since we don't do anything in the prerm on deconfigure
130	# ;;
131	esac
132
133	db_stop
134
135
136	### Notify others of our installation ###
137
138	is_installed() {
139	# Same function in preinst, postinst, postrm
140	[ "$1" ] \|\| return 1
141	dpkg-query -W -f='${Status}\n' "$1" 2>/dev/null \| grep -siq '^[[:alpha:]]\+ [[:alpha:]]\+ installed$' >/dev/null 2>&1
142	}
143
144	case "$1" in
145	configure)
146	PACKAGES_TO_NOTIFY=""
147	[ -r /etc/resolvconf/run/packages-to-notify ] && PACKAGES_TO_NOTIFY="$(cat /etc/resolvconf/run/packages-to-notify)"
148	rm -f /etc/resolvconf/run/packages-to-notify
149	for PKG in $PACKAGES_TO_NOTIFY ; do
150	if is_installed "$PKG" ; then
151	SCRPT="/etc/resolvconf/install-remove.d/$PKG"
152	[ -x "$SCRPT" ] && "$SCRPT" install
153	fi
154	done
155	;;
156	# triggered)
157	# Don't do anything
158	# ;;
159	# abort-upgrade)
160	# Don't do anything here since we don't do anything in the prerm on upgrade or on failed-upgrade
161	# ;;
162	# abort-remove)
163	# Don't do anything extra here since we don't deconfigure anything in the prerm on remove
164	# ;;
165	# abort-deconfigure)
166	# Don't do anything extra here since we don't do anything in the prerm on deconfigure
167	# ;;
168	esac
169
170
171	### Trigger self to enable updates ###
172
173	enable_updates() {
174	if [ -x "/etc/init.d/resolvconf" ] ; then
175	if which invoke-rc.d >/dev/null 2>&1 ; then
176	invoke-rc.d resolvconf enable-updates \|\| :
177	else
178	/etc/init.d/resolvconf enable-updates
179	fi
180	fi
181	}
182
183	case "$1" in
184	configure)
185	# Trigger self
186	dpkg-trigger resolvconf-enable-updates
187	;;
188	triggered)
189	# Runs after this and other packages have been configured
190	for trigger in $2 ; do
191	case "$trigger" in
192	resolvconf-enable-updates)
193	if [ -x /sbin/resolvconf ] ; then
194	enable_updates
195	break
196	fi
197	;;
198	esac
199	done
200	;;
201	abort-remove)
202	# We disable updates in the prerm on remove.
203	# So, enable them again
204	enable_updates
205	;;
206	# abort-upgrade)
207	# Don't do anything here since we don't do anything in the prerm on upgrade or on failed-upgrade
208	# ;;
209	# abort-deconfigure)
210	# Don't do anything extra here since we don't do anything in the prerm on deconfigure
211	# ;;
212	esac
213