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118 lines
2.6 KiB
118 lines
2.6 KiB
3 years ago
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#!/bin/sh -efu
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##
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# This script:
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# 1) updates pam_mount configuration
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# 2) updates pam configuration
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#
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# NB: network shares automounted only for a particular uid range
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. shell-error
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msg() {
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printf "$* \n"
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}
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pmconf="/etc/security/pam_mount.conf.xml"
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pamconf="/etc/pam.d/system-auth-krb5"
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##
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# Update pam_mount configuration file
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#
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update_pmconf() {
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local insert_at tmp_conf
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tmp_conf="${pmconf}.new"
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# no pam_mount: impossible(tm)
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[ -w "$pmconf" ] || return 1
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# already configured
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grep -qs dnssd_lookup "$pmconf" 2>/dev/null && return 0
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# configure pam_mount to use avahi
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insert_at="$(sed -n '/<!-- Volume definitions -->/=' "$pmconf" \
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| head -n 1)"
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if [ -z "$insert_at" ]; then
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msg "Can't find position for injection in $pmconf"
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return 1
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fi
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# part 1 (head)
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head -n $((insert_at-1)) "$pmconf" > "$tmp_conf"
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# part 2 (inserted text)
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cat >> "$tmp_conf" <<'__EOF__'
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<!-- # inserted by 70-network-shares-samba.sh ##################### -->
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<volume uid="5000-10000" fstype="cifs" dnssd_lookup="1" mountpoint="/home/%(USER)/share" options="sec=krb5,cruid=%(USERUID)" />
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<cifsmount>/sbin/mount.cifs //%(SERVER)/%(VOLUME) %(MNTPT) -o %(OPTIONS)</cifsmount>
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<cifsumount>/sbin/umount.cifs %(MNTPT)</cifsumount>
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<!-- ############################################################## -->
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__EOF__
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# part 3 (tail)
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sed -n "$insert_at,\$p" "$pmconf" >> "$tmp_conf"
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# update config
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chown root:root "$tmp_conf"
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chmod 644 "$tmp_conf"
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mv -f "$tmp_conf" "$pmconf"
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# XXX: REMOVE FOR RELEASE
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# sed -i -e '/debug enable/ s/0/1/' "$pmconf"
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}
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##
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# Update pam configuration
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#
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update_pam() {
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local append_after
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# no pam-config: impossible(tm)
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[ -w "$pamconf" ] || return 1
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if [ -L "$pamconf" ]; then
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pamconf="$(realpath "$pamconf")"
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fi
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# already configured
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grep -qs pam_mount "$pamconf" && return 0
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append_after="$(sed -n '/^auth[[:space:]]\+required/=' "$pamconf" \
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| tail -n 1)"
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[ -n "$append_after" ] &&
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sed -i \
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-e "$append_after a auth optional pam_mount.so" \
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"$pamconf"
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append_after="$(sed -n '/^session[[:space:]]\+required/=' "$pamconf" \
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| tail -n 1)"
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[ -n "$append_after" ] &&
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sed -i \
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-e "$append_after a session optional pam_mount.so" \
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"$pamconf"
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append_after="$(sed -n '/^auth[[:space:]]\+required/=' \
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"$pamconf"_ccreds | tail -n 1)"
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[ -n "$append_after" ] &&
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sed -i \
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-e "$append_after a auth optional pam_mount.so" \
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"$pamconf"_ccreds
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### set ccache to predicadable value (ouch!)
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sed -i 's|pam_krb5.so use_first_pass$|pam_krb5.so use_first_pass ccache=/tmp/krb5cc_%u|' "$pamconf"
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}
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##
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# Start
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#
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update_pmconf &&
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update_pam
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