diff options
Diffstat (limited to 'remote/modules/pam-common-share/data/opt/openslx/scripts/pam_script_mount_common_share')
| -rw-r--r-- | remote/modules/pam-common-share/data/opt/openslx/scripts/pam_script_mount_common_share | 178 |
1 files changed, 109 insertions, 69 deletions
diff --git a/remote/modules/pam-common-share/data/opt/openslx/scripts/pam_script_mount_common_share b/remote/modules/pam-common-share/data/opt/openslx/scripts/pam_script_mount_common_share index 85a3fcc0..670943f4 100644 --- a/remote/modules/pam-common-share/data/opt/openslx/scripts/pam_script_mount_common_share +++ b/remote/modules/pam-common-share/data/opt/openslx/scripts/pam_script_mount_common_share @@ -1,36 +1,41 @@ ################################################################### # -# This script is a part of the pam_script_auth script -# and is not stand-alone! +# This script is a part of the pam_script_auth script +# and is not stand-alone! # -# It will try to mount the common shares specified in the -# variables of the global slx config '/opt/openslx/config'. -# A primary and a secondary share may be given. Every share -# require following bundle of variables: +# It will try to mount the common shares specified in the +# variables of the global slx config '/opt/openslx/config'. +# An arbitrary number of shares may be given. Every share +# requires following bundle of variables: # # -# SLX_SHARE_[0-9]_AUTH_TYPE [guest|user|pam] -# SLX_SHARE_[0-9]_AUTH_USER <username> -# SLX_SHARE_[0-9]_AUTH_PASS <password> -# SLX_SHARE_[0-9]_PERM [ro|rw] -# SLX_SHARE_[0-9]_PATH <path_to_share> +# SLX_SHARE_<id>_AUTH_TYPE [guest|user|pam] +# SLX_SHARE_<id>_AUTH_USER <username> +# SLX_SHARE_<id>_AUTH_PASS <password> +# SLX_SHARE_<id>_PERM [ro|rw] +# SLX_SHARE_<id>_PATH <path_to_share> # -# Example: -# SLX_SHARE_0_PATH='//windows.server/sharename' -# SLX_SHARE_0_AUTH_TYPE='user' -# SLX_SHARE_0_AUTH_USER='shareuser' -# SLX_SHARE_0_AUTH_PASS='sharepass' -# SLX_SHARE_0_PERM='rw' +# Note: <id> is the identifier of the share. # -# Note: When AUTH_TYPE is set to 'pam' or 'guest', -# no need to specify AUTH_USER or AUTH_PASS. +# Example: +# SLX_SHARE_0_PATH='//windows.server/sharename' +# SLX_SHARE_0_AUTH_TYPE='user' +# SLX_SHARE_0_AUTH_USER='shareuser' +# SLX_SHARE_0_AUTH_PASS='sharepass' +# SLX_SHARE_0_PERM='rw' # +# Note: If AUTH_TYPE is set to 'pam' or 'guest', then +# there is no need to specify AUTH_USER or AUTH_PASS +# as it is obviously not needed. # -# usage: mount_share <auth_type> <auth_user> <auth_password> <permissions> <path> <share> +################################################################### +# +# Internal helper function to mount a share +# usage: mount_share <auth_type> <auth_user> <auth_password> <permissions> <path> <share_number> mount_share() { - # only want two arguments + # since we are (hopefully) the only one using this function, we know we need excatly 6 args [ $# -ne 6 ] && { slxlog "pam-share-args" "Wrong number of arguments given! Need 6, $# given."; return; } - + # lets check if we have our variables local SHARE_AUTH_TYPE="$1" local SHARE_AUTH_USER="$2" @@ -43,17 +48,12 @@ mount_share() { [ "x${SHARE_PERM}" != "xrw" ] && SHARE_PERM='ro' # all good: now we can mount depending on the type - # supports: cifs?/nfs? + # supports: cifs?/nfs? if [ "${SHARE_PATH:0:2}" = "//" ]; then # '//' prefixed, assume windows share # prepare common mount options for either authentication type MOUNT_OPTS="-t cifs -o nounix,uid=${USER_UID},gid=${USER_GID},forceuid,forcegid,nobrl,noacl,$SHARE_PERM" - # flag for failure - SIGNAL=$(mktemp) - rm -f -- "${SIGNAL}" - # output of command - MOUNT_OUTPUT=$(mktemp) # now construct the mount options depending on the type of the share. if [ "${SHARE_AUTH_TYPE}" = "guest" ]; then MOUNT_OPTS="${MOUNT_OPTS},guest,file_mode=0777,dir_mode=0777" @@ -73,40 +73,68 @@ mount_share() { slxlog "pam-share-auth" "Share${SHARE_NUM}: Auth type '${SHARE_AUTH_TYPE}' not supported." return; fi + else + # for now assume NFS-Share, start build options string with default options for all shares + MOUNT_OPTS="-t nfs -o async,nolock" + + # TODO: here we will have to evaluate options of NFS-shares - # we just mount it to the directory with the same name as the - # last directory in the path name of the share - # e.g. //windows.net/lehrpool -> ${COMMON_SHARE_MOUNT_POINT}/lehrpool - local TARGET_DIR="${COMMON_SHARE_MOUNT_POINT}/$(basename ${SHARE_PATH})" - # it exists, so let's create ${COMMON_SHARE_MOUNT_POINT}/lehrpool_${SHARE_NUM} - [ -d "${TARGET_DIR}" ] && TARGET_DIR="${TARGET_DIR}_${SHARE_NUM}" + # unless specified otherwise, mount the share read-only + [ "x${SHARE_PERM}" != "xrw" ] && SHARE_PERM='ro' + MOUNT_OPTS="${MOUNT_OPTS},${SHARE_PERM}" + fi - # at this point is TARGET_DIR pointing to the right directory. - mkdir -p "${TARGET_DIR}" || \ - { slxlog "pam-share-mkdirfail" "Share${SHARE_NUM}: Could not create directory '${TARGET_DIR}'. Skipping share."; return; } - # now try to mount it - ( mount ${MOUNT_OPTS} "${SHARE_PATH}" "${TARGET_DIR}" > "${MOUNT_OUTPUT}" 2>&1 || touch "${SIGNAL}" ) & - MOUNT_PID=$! - for COUNTER in 1 1 2 4; do - kill -0 "${MOUNT_PID}" 2>/dev/null || break - sleep "${COUNTER}" - done + ############################################################################ + # + # Following code is independent of the type of share. + # The variable MOUNT_OPTS should have been set correctly + # up to this point. + # + ############################################################################ - # check for failures - if [ -e "${SIGNAL}" ]; then - slxlog "pam-share-mount" "Mount of '${SHARE_PATH}' to '${TARGET_DIR}' failed. (Args: ${MOUNT_OPTS}" "${MOUNT_OUTPUT}" - rm -f -- "${SIGNAL}" - elif kill -9 "${MOUNT_PID}" 2>/dev/null; then - slxlog "pam-share-mount" "Mount of '${SHARE_PATH}' to '${TARGET_DIR}' timed out. (Args: ${MOUNT_OPTS}" "${MOUNT_OUTPUT}" - fi - ( sleep 2; rm -f -- "${MOUNT_OUTPUT}" ) & + # we just mount it to the directory with the same name as the + # last directory in the path name of the share + # e.g. //windows.net/lehrpool -> ${COMMON_SHARE_MOUNT_POINT}/lehrpool + local TARGET_DIR="${COMMON_SHARE_MOUNT_POINT}/$(basename ${SHARE_PATH})" + # it exists, so let's create ${COMMON_SHARE_MOUNT_POINT}/lehrpool_${SHARE_NUM} + [ -d "${TARGET_DIR}" ] && TARGET_DIR="${TARGET_DIR}_${SHARE_NUM}" + + # at this point is TARGET_DIR pointing to the right directory. + mkdir -p "${TARGET_DIR}" || \ + { slxlog "pam-share-mkdirfail" "Share${SHARE_NUM}: Could not create directory '${TARGET_DIR}'. Skipping share."; return; } - # always unset credentials - unset USER - unset PASSWD + # flag for failure + SIGNAL=$(mktemp) + rm -f -- "${SIGNAL}" + # output of command + MOUNT_OUTPUT=$(mktemp) + # now try to mount it + ( mount ${MOUNT_OPTS} "${SHARE_PATH}" "${TARGET_DIR}" > "${MOUNT_OUTPUT}" 2>&1 || touch "${SIGNAL}" ) & + MOUNT_PID=$! + for COUNTER in 1 1 2 4; do + kill -0 "${MOUNT_PID}" 2>/dev/null || break + sleep "${COUNTER}" + done + + # check for failures + if [ -e "${SIGNAL}" ]; then + slxlog "pam-share-mount" "Mount of '${SHARE_PATH}' to '${TARGET_DIR}' failed. (Args: ${MOUNT_OPTS}" "${MOUNT_OUTPUT}" + rm -f -- "${SIGNAL}" + elif kill -9 "${MOUNT_PID}" 2>/dev/null; then + slxlog "pam-share-mount" "Mount of '${SHARE_PATH}' to '${TARGET_DIR}' timed out. (Args: ${MOUNT_OPTS}" "${MOUNT_OUTPUT}" fi + ( sleep 2; rm -f -- "${MOUNT_OUTPUT}" ) & + + # always unset credentials + unset USER + unset PASSWD } +############################################################################ +# +# MAIN LOGIC OVER ALL SHARES +# +############################################################################ # at this point we need the slx config to do anything [ -e "/opt/openslx/config" ] || \ { slxlog "pam-share-noconfig" "File '/opt/openslx/config' not found."; return; } @@ -115,28 +143,40 @@ mount_share() { . /opt/openslx/config || \ { slxlog "pam-share-sourceconfig" "Could not source '/opt/openslx/config'."; return; } +# +# +# # Since many shares can be specified, we need to identify how many we have first. -# We just go over all SLX_SHARE_* variables and check for those ending in _PATH +# We just go over all SLX_SHARE_* variables and check for those ending in _PATH. +# So e.g. for SLX_SHARE_0_PATH=<path> the SHARE variable would be equal to 'SLX_SHARE_0_PATH' # For each of those, a share was specified and we will try to mount it. -for SHARE in ${!SLX_SHARE_*}; do - # skip if the variable doesn't end in _PATH - [[ "$SHARE" =~ .*_PATH$ ]] || continue - # first let's check if we have already mounted it, since we don't have to - # do anything is it already is. - if mount | grep -q "${SHARE}"; then - # already mounted, just skip. +for SHARE in $(grep -E '^SLX_SHARE_[0-9]+_PATH=.*$' /opt/openslx/config); do + # first let's check if we have already mounted it and skip if it is + # TODO: this should be good enough? stronger checks? + if mount | grep -q "$(echo ${SHARE} | awk -F '=' '{print $2}' | tr -d \'\")"; then + # already mounted, just skip + # this should not happen anyway, since the pam_script_auth script also exits + # if the temporary home user directory is already mounted... continue fi - # ok so we have a path in $SHARE, let's extract the number of the share + # ok so we have the full declaration command in $SHARE, + # let's extract the number of the share. # i.e. SLX_SHARE_0_PATH -> share number 0 - # first strip the leading SLX_SHARE_ - SHARE=${SHARE#SLX_SHARE_} + # first just cut everything after '=' + SHARE_ID="$(echo $SHARE | awk -F '=' '{print $1}')" + # now strip the leading SLX_SHARE_ + SHARE_ID=${SHARE_ID#SLX_SHARE_} # now remove the trailing _PATH - SHARE=${SHARE%_PATH} + SHARE_ID=${SHARE_ID%_PATH} # now it should be a number, TODO accept more than numbers? Doesn't really matter... # this check is mostly to be sure that the variable splitting worked as it should - [[ "$SHARE" =~ ^[0-9]+$ ]] || continue - eval mount_share \""\$SLX_SHARE_${SHARE}_AUTH_TYPE"\" \""\$SLX_SHARE_${SHARE}_AUTH_USER"\" \""\$SLX_SHARE_${SHARE}_AUTH_PASS"\" \""\$SLX_SHARE_${SHARE}_PERM"\" \""\$SLX_SHARE_${SHARE}_PATH"\" \""$SHARE"\" + # ugly cause we need to be ash compatible ... + if ! echo "${SHARE_ID}" | grep -q -E '^[0-9]+$'; then + continue + fi + + # now do try to mount the share using the helper function defined on the top of this script + eval mount_share \""\$SLX_SHARE_${SHARE_ID}_AUTH_TYPE"\" \""\$SLX_SHARE_${SHARE_ID}_AUTH_USER"\" \""\$SLX_SHARE_${SHARE_ID}_AUTH_PASS"\" \""\$SLX_SHARE_${SHARE_ID}_PERM"\" \""\$SLX_SHARE_${SHARE_ID}_PATH"\" \""$SHARE_ID"\" ## unset USER and PASSWD just in case mount_share returned due to an error. unset USER unset PASSWD |