set WORKING_DIRECTORY explicitly to PWD if . is passed

cloning of customer_repository, some sanity checks, check for available
updates.

git_helpers

@@ -57,6 +57,18 @@ revert_to_commit_before_pull () {
 }
 # revert_to_commit_before_pull
 
+git_branch () {
+    # always relative to a git repository
+    echo $(git branch -a | grep '*' | awk '{ print $2 }')
+}
+
+git_customer_branch () {
+    if cd_customer_repository; then
+        customer_branch=$(git_branch)
+        cd_home;
+        echo $customer_branch
+    fi
+}
 # clone the customer repository in ./workspace.
 # this is done only once.
 # 
@@ -70,99 +82,104 @@ revert_to_commit_before_pull () {
 #
 clone_customer_repository () {
     local func="${FUNCNAME[0]}"
-    if [ "$PWD" = "$WORKING_DIRECTORY" ]; then
+    if [ "$PWD" != "$WORKING_DIRECTORY" ]; then
+        log_fatal "$func:${LINENO} PD != WD ($PWD != $WORKING_DIRECTORY)"
+    fi
+   
     mkdir -p "./$WORKSPACE_DIR"
     # check if the directory is empty. If so, clone the
     # customer repository
     if ! find ./$WORKSPACE_DIR -mindepth 1 -maxdepth 1 | read; then
-            log_debug "$func:${LINENO} cloning ${1} ..."
+        log_info "$func:${LINENO} cloning ${1} into ${PWD}/${WORKSPACE_DIR}..."
-            if cd "./$WORKSPACE_DIR"
+        if ! cd "./$WORKSPACE_DIR"; then
-            then
+            update_psa_clone_error  # message to ISMAS
-                $(exec_git_command git clone "$1")
+            log_fatal "$func:${LINENO} can not change to $WORKSPACE_DIR"
-                if [ $? -eq 0 ]; then
+        fi
+        if ! exec_git_command git clone "$1"; then
+            update_psa_clone_error  # message to ISMAS
+            log_fatal "$func:${LINENO} can not clone $1"
+        fi
+        ##########################  CLONING DONE   ############################
         log_debug "$func:${LINENO} cloning ${1} done"
-                    GIT_CLONE_EXECUTED=1
-                    rm -f $GIT_PULL_TMP
-                    rm -f $OPKG_CMDS_TMP
         # after cloning, cd into repository, and re-initialize,
         # setting the work-tree as "/". This has the effect that
         # a "git pull" will automatically fetched files in the
         # corresponding sytem-folders.
-                    if cd ${CUSTOMER_ID_BASE_DIR}; then
+        #######################  CD INTO REPOSITORY  ##########################
-                        # local res=$(exec_git_command git --git-dir=.git --work-tree=/ init)
+        if ! cd ${CUSTOMER_ID_BASE_DIR}; then
-                        exec_git_command git checkout "$LOCAL_BRANCH"
+            update_psa_clone_error  # message to ISMAS
-                        if [[ $? -eq 0 ]]; then
+            log_fatal "$func:${LINENO} can not change to $CUSTOMER_ID_BASE_DIR"
+        fi
+        log_debug "$func:${LINENO} cd into $CUSTOMER_ID_BASE_DIR"
+        ##################### CONFIGURE HOOKS DIRECTORY  ######################
+        if ! exec_git_command git config core.hooksPath .githooks; then
+            update_psa_clone_error  # message to ISMAS
+            log_fatal "$func:${LINENO} can not configure hooks directory"
+        fi
+        ###################### CHECKOUT LOCAL BRANCH  #########################
+        if ! exec_git_command git checkout "$LOCAL_BRANCH"; then
+            update_psa_clone_error  # message to ISMAS
+            log_fatal "$func:${LINENO} can not checkout $LOCAL_BRANCH"
+        fi
         log_debug "$func:${LINENO} checked out local branch $LOCAL_BRANCH"
-                            exec_git_command git config core.worktree "/"
+        ######################## CONFIGURE WORKTREE  ##########################
-                            if [[ $? -eq 0 ]]; then
+        if ! exec_git_command git config core.worktree "/"; then
-                            	log_debug "$func:${LINENO} configured worktree"
+            update_psa_clone_error  # message to ISMAS
-                                exec_git_command git fetch --all
+            log_fatal "$func:${LINENO} can not configure worktree '/'"
-                       	        if [[ $? -eq 0 ]]; then
+        fi
+        log_debug "$func:${LINENO} configured worktree '/'"
+        ########################### FETCH ALL #################################
+        if ! exec_git_command git fetch --all; then
+            update_psa_clone_error  # message to ISMAS
+            log_fatal "$func:${LINENO} can not fetch --all for $LOCAL_BRANCH"
+        fi
         log_debug "$func:${LINENO} fetch repository"
-                                    exec_git_command git reset --hard "$LOCAL_BRANCH"
+        ########################## RE-INIT REPOSITORY  ########################
-                       	            if [[ $? -eq 0 ]]; then
+        if ! exec_git_command git reset --hard "$LOCAL_BRANCH"; then
+            update_psa_clone_error  # message to ISMAS
+            log_fatal "$func:${LINENO} re-init of $LOCAL_BRANCH failed"
+        fi
         log_debug "$func:${LINENO} reset --hard $LOCAL_BRANCH"
-                                        # re-initialized. copy post-merge (a hook called
+        INITIAL_CLONE=true
-                                        # when 'git pull' is executed and changed data
-                                        # are received).
-                            	        if cp ".githooks/post-merge" ".git/hooks"; then
-                                            log_debug "$func:${LINENO} copied post-merge to .git/hooks"
-                                            CLONE_CUSTOMER_REPOSITORY=true
         log_debug "$func:${LINENO} re-init of ${1} done"
-                                            cd_home; return 0
+        update_psa_clone_customer_repository
-                                        fi
-			            fi
-		    	        fi
-                            fi
-		        fi
-                    fi
-                fi
-                cd_home; return 1
-            fi
     else
         # the directory is not empty, so we assume the
         # customer-repository has been cloned already
         if ! [[ -d "./${WORKSPACE_DIR}/$CUSTOMER_ID" ]]; then
             log_fatal "$func:${LINENO} $PWD $WORKSPACE_DIR/$CUSTOMER_ID"\
                 "wrong repository: $(ls -d './${WORKSPACE_DIR}/*')"
-            else
+        fi
         local __m="./${WORKSPACE_DIR}/$CUSTOMER_ID exists"
-                log_debug "$func:${LINENO} $__m"
+        log_info "$func:${LINENO} $__m, no clone necessary"
-                return 0
-            fi
-        fi
     fi
 
-    update_psa_clone_error  # message to ISMAS
+    cd_home
-    return $? 
 }
 # clone_customer_repository ->
 # https://git.mimbach49.de/GerhardHoffmann/customer_281.git
 
 cd_customer_repository () {
     local func="${FUNCNAME[0]}"
-    # has to be called in WORKING_DIRECTORY
+
-    cd "$WORKING_DIRECTORY"
+    if [ "$PWD" != "$WORKING_DIRECTORY" ]; then
-    if [ "$PWD" = "${WORKING_DIRECTORY}" ]; then
+        log_fatal "$func:${LINENO} PD != WD ($PWD != $WORKING_DIRECTORY)"
-        repository_dir="./$WORKSPACE_DIR/$CUSTOMER_ID"
-        if ! [[ -d "$repository_dir" ]]; then
-            log_crit "$func:${LINENO}: $repository_dir does not exist!"
-            return 1
     fi
 
-        if ! { cd $repository_dir; } ; then
+    if ! [[ -d "$CUSTOMER_ID_BASE_DIR" ]]; then
-            log_crit "$func:${LINENO}: cannot cd to $repository_dir!"
+        log_fatal "$func:${LINENO}: $CUSTOMER_ID_BASE_DIR does not exist!"
-            return 1
     fi
     
-        log_debug "$func:${LINENO}: cd to $repository_dir!"
+    if ! cd "$CUSTOMER_ID_BASE_DIR"; then
+        log_fatal "$func:${LINENO}: cannot cd to $CUSTOMER_ID_BASE_DIR !!!"
+    fi
+
+    log_debug "$func:${LINENO}: cd to $CUSTOMER_ID_BASE_DIR"
     return 0
-    fi
-    return 1
 }
 
 cd_home () {
-    if cd - &>/dev/null ; then
+    if cd "$WORKING_DIRECTORY" &>/dev/null ; then
         return 0
     fi
     return 1
@@ -175,26 +192,19 @@ pull_customer_repository () {
         return 1
     fi
 
-    #local commit_before_pull=$(latest_commit)
+    log_crit "$func:${LINENO}: executing 'git pull'..."
-    #if [ -z $commit_before_pull ]; then
-    #    log_warn "$func:${LINENO}: commit_before_pull empty"
-    #    cd_home ; return 1
-    #fi
-    #log_debug "$func:${LINENO}: commit_before_pull=$commit_before_pull"
-
-    rm -f "$OPKG_CMDS_TMP"
-    rm -f "$GIT_PULL_TMP"
-
-    log_debug "$func:${LINENO}: executing 'git pull'..."
     exec_git_command 'git pull'
 
-    # GIT_PULL_TMP created by hook post-merge. it contains the names of the
+    # GIT_UPDATE_LOG updated by hook post-merge. it contains the names of the
-    # changed files.
+    # changed files or opkg-commands to execute.
-    if [[ -f $GIT_PULL_TMP ]]; then
+    # If 'git pull' has fetched new data, then there are lines starting with
+    # DOWNLOAD or EXECUTE.
+    if grep -qE "^[[:space:]]*(DOWNLOAD|EXECUTE)" "$GIT_UPDATE_LOG"; then
+        log_info "$func:${LINENO}: new data fetched from repository"
         cd_home; return 0
     fi
      
-    log_warn "$func:${LINENO}: no data fetched form repository"
+    log_warn "$func:${LINENO}: no data fetched from repository"
     cd_home; return 1
 }
 # pull_customer_repository customer_281
@@ -224,4 +234,20 @@ changed_file_names () {
             "while in $PWD"
     fi
 }
-# fi
+
+get_blob () {   # get the blob of the file(name) passed as $1
+                # note: this can be used for any file in the filesystem
+    echo $(git hash-object $1)
+}
+
+get_commit_for_blob () {
+    blob=$(get_blob $1)
+    if [ ! -z $blob ]; then
+        # search for the blob in all commits for the file(name) $1
+        echo $(echo $(git log --all --pretty=format:%H -- $1) |
+               xargs -I{} sh -c "git ls-tree {} -- $1         |
+               grep -q $blob && echo {}")
+    fi
+}
+
+

log_helpers

@@ -1,10 +1,6 @@
 #!/bin/bash
 # set -x 
 
-RED='\e[0;31m'
-GREEN='\e[0;32m'
-NC='\e[0m' # No Color
-
 if [ "${log_helpers_sourced:-1}" = "1" ]; then    # include only once
     readonly log_helpers_sourced=${BASH_SOURCE[0]}
 
@@ -21,7 +17,8 @@ if [ "${log_helpers_sourced:-1}" = "1" ]; then    # include only once
     readonly FATAL=5
     readonly MAX_DEBUG_LEVEL=6
 
-    log_level=0
+    log_level=$INFO
+    FATAL_FAILURE=false
 
     set_dbg_level () {
         if [ $1 < $MAX_DEBUG_LEVEL ]; then
@@ -33,50 +30,61 @@ if [ "${log_helpers_sourced:-1}" = "1" ]; then    # include only once
         return $log_level
     }
 
-    log() {
+    log_to_file() {
         if [[ $(("$(wc -l < $log_file)")) -ge $((100000)) ]]; then
             # remove first line
             sed -e 1d -i $log_file
         fi
         local msg="$(date +'%Y-%m-%d_%T'): $*"
-        echo "log:$msg" >&2
         echo "$msg" >> $log_file
     }
 
+    log() {
+        local msg="$(date +'%Y-%m-%d_%T'): $*"
+        echo "log:$msg" >&2
+    }
+
     log_debug() {
-        if [ $log_level = $DEBUG ]; then
+        log_to_file "DEBUG $*"
+        if [ $log_level -le $DEBUG ]; then
             log "DEBUG $*"
         fi
     }
 
     log_info() {
+        log_to_file "INFO $*"
         if [ $log_level -le $INFO ]; then
-            log "${GREEN}INFO  $*"
+            log "INFO  $*"
         fi
     }
 
     log_warn() {
+        log_to_file "WARN $*"
         if [ $log_level -le $WARN ]; then
-            log "${RED}WARN  $*"
+            log "WARN  $*"
         fi
     }
 
     log_crit() {
+        log_to_file "CRIT $*"
         if [ $log_level -le $CRIT ]; then
-            log "${RED}CRIT  $*"
+            log "CRIT  $*"
         fi
     }
 
     log_error() {
+        log_to_file "ERROR $*"
         if [ $log_level -le $ERROR ]; then
-            log "${RED}ERROR  $*"
+            log "ERROR  $*"
         fi
     }
 
     log_fatal() {
+        log_to_file "FATAL $*"
         if [ $log_level -le $FATAL ]; then
-            log "${RED}FATAL  $*"
+            log "FATAL  $*"
-            log "${RED}exiting ..."
+            log "exiting ..."
+            FATAL_FAILURE=true
             exit 1
         fi
     }

news_from_ismas

@@ -2,7 +2,8 @@
 
 source ./log_helpers
 
-if [ ${news_to_ismas_sourced:-1} = "1" ]; then    # include only once
+if [ "${news_from_ismas_sourced:-1}" = "1" ]; then    # include only once
+    readonly news_from_ismas_sourced=${BASH_SOURCE[0]}
     readonly APISM_DIRECT_PORT=7778
 
     updates_available () {

news_to_ismas

@@ -2,7 +2,8 @@
 
 source ./log_helpers
 
-if [ ${news_to_ismas_sourced:-1} = "1" ]; then    # include only once
+if [ "${news_to_ismas_sourced:-1}" = "1" ]; then    # include only once
+    readonly news_to_ismas_sourced=${BASH_SOURCE[0]}
 
     readonly APISM_DB_PORT=7777
     readonly UPDATE_ISMAS_PROGRESS="U0010"
@@ -70,6 +71,18 @@ if [ ${news_to_ismas_sourced:-1} = "1" ]; then    # include only once
     ########################################################################### 
     ########################################################################### 
     
+    update_psa_clone_customer_repository () {
+        PERCENT=10
+        local params=("U0010"                                   # event
+                      $PERCENT                                  # percent
+                      $RC_SUCCESS                               # resultcode
+                      "clone_customer_repository"               # step
+                      "git cloned $CUSTOMER_REPOSITORY_PATH"    # step_result
+                      "")                                       # version
+        news_to_ismas ${params[*]}
+        return $?
+    }
+   
     update_psa_pull_customer_repository () {
         PERCENT=10
         local params=("U0010"                                   # event
@@ -382,7 +395,7 @@ if [ ${news_to_ismas_sourced:-1} = "1" ]; then    # include only once
                 \"CREATED\":\"$(date +%Y-%m-%dT%T)\",
                 \"HASH\":\"$(compute_hash)\"
             },
-            \"TARIFF\": {
+            \"TARIFF\" : {
                 $(<$TC_PSA_TC_FILE) 
             },
             \"HARDWARE\" : {

read_config

@@ -22,22 +22,21 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     readonly UPDATEPSABEGIN=./.updatepsa/begin
     readonly UPDATEPSAEND=./.updatepsa/end
 
-    readonly OPKG_CMDS_TMP=/tmp/opkg_commands
+    # name of file containing the logs following a 'git pull':
-    readonly GIT_PULL_TMP=/tmp/git_pull
+    # basically, there are two kinds of entries:
+    readonly GIT_UPDATE_LOG=/opt/app/tools/atbupdate/update_log.csv
 
     readonly PROGRAM=`basename $0`
     readonly WORKSPACE_DIR=workspace
 
-    GIT_CLONE_EXECUTED=0
-
     EXITCODE=$RC_SUCCESS
-    CLONE_CUSTOMER_REPOSITORY=false
+    INITIAL_CLONE=false
+    APISM_RUNNING=0
 
     # read config file (JSON syntax)
     read_config() {
         local func="${FUNCNAME[0]}"
     
-        WORKING_DIRECTORY=${PWD}
         CONFIGFILENAME=${CONFIGFILENAME:-'update_psa.conf'}
 
         if ! [ -f "$CONFIGFILENAME" ]; then
@@ -49,13 +48,6 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         
         local readonly cf="$CONFIGFILENAME"
 
-        ### TODO: wieso wird hier in das verzeichnis gewechselt
-        if cd $WORKING_DIRECTORY ; then
-            log_debug "$func:${LINENO}: cd to $WORKING_DIRECTORY"
-        else
-            log_fatal "$func:${LINENO}: cannot cd to $WORKING_DIRECTORY"
-        fi
-        
         readonly GIT_SSL_NO_VERIFY="$(cat "$cf" | jq -r .GIT_SSL_NO_VERIFY)"
         assert_s GIT_SSL_NO_VERIFY
 
@@ -96,10 +88,23 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         # Zone aus /etc/zone_nr auslesen
         #
         readonly ZONE_GROUP=1
-        readonly ZONE=1
+        local __zone=1
+        readonly ZONE_FILE="$(cat "$cf" | jq -r .zone)"
+        if [ -f "$ZONE_FILE" ]; then
+            __zone=$(cat "$ZONE_FILE")
+            __zone=$((__zone))
+        fi
 
+        readonly ZONE=$__zone
         readonly LOCAL_BRANCH="$(cat "$cf" | jq -r .local_branches[$ZONE])"
 
+        if [ -z "$WORKING_DIRECTORY" ]; then
+            log_fatal "${func}:${LINENO}: empty WORKING_DIRECTORY"
+        fi
+        if ! cd "$WORKING_DIRECTORY"; then
+            log_fatal "${func}:${LINENO}: cannot cd to $WORKING_DIRECTORY"
+        fi
+        log_debug "${func}:${LINENO}: cd to $WORKING_DIRECTORY"
         return 0
     }
 ###############################################################################
@@ -128,6 +133,10 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     check_sanity_of_repository () {
         local func="${FUNCNAME[0]}"
     
+        if [ "$PWD" != "$WORKING_DIRECTORY" ]; then
+            log_fatal "$func:${LINENO} PD != WD ($PWD != $WORKING_DIRECTORY)"
+        fi
+        
         assert_d CUSTOMER_ID_BASE_DIR
         
         CUSTOMER_LOCATION_DIR="$CUSTOMER_ID_BASE_DIR"
@@ -194,7 +203,7 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         readonly              SYSCONF_INI="sysconfig.ini"
         readonly              SYSCTRL_INI="SystemControl.ini"
         readonly           TARIFF_CURRENT="tariff.current"
-        readonly                       DC="dc2c.hex"
+        readonly                       DC="dc2c.bin"
         readonly            TARIFF_SUMMER="summer_tariff.json"
         readonly            TARIFF_WINTER="winter_tariff.json"
         
@@ -213,7 +222,7 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         readonly SYSCTRL_ETC_SYS_INI_FILE="${ETC_SYS_DIR}/$SYSCTRL_INI"
         readonly SYSCTRL_ATB_SYS_INI_FILE="${ATB_SYS_DIR}/$SYSCTRL_INI"
         readonly SYSCTRL_SCF_SYS_INI_FILE="${SYSCONFIG_SYS_DIR}/$SYSCTRL_INI"
-        readonly                ZONE_FILE="$ETC_SYS_DIR/zone_nr"
+        # readonly                ZONE_FILE="$ETC_SYS_DIR/zone_nr"
         readonly             CUST_ID_FILE="$ETC_SYS_DIR/cust_nr"
         readonly           TC_SYS_TC_FILE="${ATBAPP_SYS_DIR}/$TARIFF_CURRENT"
         readonly       OPKG_CMDS_SYS_FILE="${OPKG_SYS_DIR}/opkg_commands"

update_psa

@@ -5,6 +5,7 @@
 #                                UPDATE PSA
 # Usage:
 #   update_psa [ --? ]
+#              [ -m  ]
 #              [ --help ]
 #              [ --wdir "working_directory" ]
 #              [ --file "config_file" ]
@@ -23,9 +24,15 @@ if [ -z $IFS ]; then
     IFS=$'\n'
 fi
 
+MAINTENANCE="NO"
+WORKING_DIRECTORY=${PWD}
+
 # parse commandline parameters
 while test $# -gt 0; do
     case $1 in
+        --maintenance | -m )
+            MAINTENANCE="YES"
+            ;;
         --file | --fil | --fi | --f | -file | -fil | -fi | -f )
             shift
             CONFIGFILENAME="$1"
@@ -36,7 +43,11 @@ while test $# -gt 0; do
             ;;
         --wdir | --wdi | --wd | --w | -wdir | -wdi | -wd | -w )
             shift
+            if [ "$1" = "." ]; then
+                WORKING_DIRECTORY="$PWD"
+            else
                 WORKING_DIRECTORY="$1"
+            fi
             ;;
         --help | -hel | --he | --h | '--?' | -help | -hel | -he | -h | '-?' )
             usage_and_exit 0
@@ -47,6 +58,7 @@ while test $# -gt 0; do
             exit 0
             ;;
         --dbg | --db | --d | -dbg | -db | -d )
+            shift
             set_dbg_level $DEBUG
             ;; 
         -*)
@@ -59,28 +71,11 @@ while test $# -gt 0; do
     shift
 done
     
-if cd "$WORKING_DIRECTORY"; then
+source ./update_psa_impl
-    source ./update_psa_impl
 
-    if read_config
+if read_config; then
-    then
-        if clone_customer_repository ${CUSTOMER_REPOSITORY_PATH}
-	then 
-            check_sanity_of_repository
-
-            #set_updates_available
-            #while :
-            #do
-            #    sleep 5
-            #    updates_available && break
-            #done 
-
-            # update_psa "testing"
     update_psa
-        fi
-    fi
     exit 0
 fi
-
+exit 1
-exit -1
 ###############################################################################

update_psa.conf

@@ -13,7 +13,7 @@
 
     ""                      :   "local branches",
     "local_branches"        :   ["master",
-                                 "zg1/zone1", "zg1/zone2", "zg1/zone3"],
+                                 "zg1/zone1", "zg1/zone2", "zg1/zone3", "zg1/zone4"],
 
     ""                      :   "customer number of PSA",
     "customer_id_"          :   "/etc/cust_nr",
@@ -26,7 +26,7 @@
     ""                      :   "0-index used as size of following array",
     ""                      :   ".zg[0]: #n of zones_groups",
     ""                      :   ".zg[1].z[0]: #n of zones in zg[1]",
-    "zg"                    :   [   1, { "z" : [ 3, 1, 2, 3] } ],
+    "zg"                    :   [   1, { "z" : [ 4, 1, 2, 4] } ],
 
     ""                      :   "url of customer repository",
     "cust_repository_path"  :   "https://git.mimbach49.de/GerhardHoffmann/customer_281.git"

update_psa_helpers

@@ -373,8 +373,37 @@ cleanup_previous_version() {
     return 0
 }
 
-check_for_apism () {
+check_for_running_apism () {
-    nc localhost 7778
+    local func="${FUNCNAME[0]}"
+    if nc localhost 7778
+    then
+        APISM_RUNNING=1
+        log_info "$func:${LINENO}: APISM is running..."
+        return 0
+    fi
+    log_fatal "$func:${LINENO}: !!! APISM NOT RUNNING !!!"
+}
+
+check_default_route () {
+    local func="${FUNCNAME[0]}"
+    if ip route | head -n 1 | grep -q '^default'
+    then
+        log_info "$func:${LINENO}: default route set"
+        return 0
+    fi
+    log_fatal "$func:${LINENO}: !!! NO DEFAULT ROUTE SET !!!"
+}
+
+check_route_to_repository () {
+    local func="${FUNCNAME[0]}"
+    # ip_address=$1, e.g. git.mimbach.de (185.191.219.134)
+    # 185.191.219.134 via 192.168.5.254 ...
+    if test "$#" -eq 1 && ip route get "$1" | head -n 1 | grep -q "^$1"
+    then
+        log_info "$func:${LINENO}: route to repository available"
+        return 0
+    fi
+    log_fatal "$func:${LINENO}: !!! NO ROUTE TO REPO SET !!!"
 }
 
 get_customer_id () {

update_psa_impl

@@ -13,6 +13,8 @@ trap collect_current_configuration EXIT
 collect_current_configuration () {
     local func="${FUNCNAME[0]}"
 
+    $FATAL_FAILURE && return 1
+
     # TODO: eventuell muss die version neu berechnet werden
     current_settings_to_ismas
 
@@ -28,24 +30,43 @@ collect_current_configuration () {
     #done
 }
 
-update_psa() { # calling with a parameter is used for testing
+update_psa() {
-
-    if [ $# -eq 0 ]; then
-        if ! updates_available; then    # check for false alarm
-            update_psa_false_alarm "update requested, but no WAIT state detected"
-            exit $EXITCODE
-        fi
-    fi
-
     update_psa_activated    # message to ISMAS
-            
     local func="${FUNCNAME[0]}"
     
+    check_default_route
+    check_route_to_repository "185.191.219.134" # git.mimbach.de
+    # even for a git clone a running APISM is needed 
+    check_for_running_apism
+
+    # an initial clone of the customer-repository (e.g. customer_281) is 
+    # always possible, even without a ISMAS-WAIT-button
+    clone_customer_repository ${CUSTOMER_REPOSITORY_PATH}
+    check_sanity_of_repository
+    $INITIAL_CLONE && return 0
+
+    if [ "$MAINTENANCE" = "NO" ]; then
+        log_info "update_psa:${LINENO}: MAINTENANCE OFF. Checking for updates..."
+        # someone must have activated the WAIT-button in ISMAS. 
+        # Request the status of this button in updates_available().
+        if ! updates_available; then 
+            update_psa_false_alarm "update requested, but no WAIT state detected !!!"
+            log_fatal "update_psa:${LINENO}: update requested, but no WAIT state detected !!!"
+        fi
+    else
+        # simulate an activated WAIT-button
+        set_updates_available
+        while :
+        do
+            sleep 5
+            updates_available && break
+        done 
+    fi
+
     log_debug "$func:${LINENO}: fetch/merge updates..."
    
     # Fetch new updates (using git). but only when repository has already been
     # cloned.
-    if [ $GIT_CLONE_EXECUTED -eq 0 ]; then
     if ! fetch_customer_updates; then
         log_error "$func:${LINENO}: fetch no data for $customer_id"\
 	    "-> no files to update -> no psa update"
@@ -53,95 +74,7 @@ update_psa() { # calling with a parameter is used for testing
 	    "update request, but no change in $CUSTOMER_REPOSITORY_PATH"
         # TODO
     fi
-    fi
             
     update_psa_pull_customer_repository # message to ISMAS
-
-    # no backup necessary as saved in git-repo
-    
-    # local changed_files=$(changed_file_names)
-   
-    if [[ -f "$GIT_PULL_TMP" ]]; then 
-        # TODO
-        if ! check_hardware_compatibility "$files_to_copy" ; then
-            local __r=$?
-            log_error "$func:${LINENO}: json/ini-files not fit for PSA"
-            revert_customer_repository
-            exit $__r
-        fi
-    fi
-
-    if [[ -f "$OPKG_CMDS_TMP" ]]; then
-        local commands="$(cat ${OPKG_CMDS_TMP} | tr '\n' '; ')"
-        log_info "$func:${LINENO}: executed opkg commands"
-        update_psa_install_opkg_packages $UPDATE_ISMAS_PROGRESS \
-            $RC_SUCCESS "$commands"
-    else
-        log_info "$func:${LINENO}: no opkg commands to execute"
-        update_psa_install_opkg_packages $UPDATE_ISMAS_PROGRESS \
-            $RC_SUCCESS "no opkg commands to execute"
-    fi
-        
-    # check if the opkg-command-file has been changed during 'git pull'
-    #if grep -qE ".*opkg_commands.*?" <<< $changed_files; then
-    #    # read opkg_cmds: each line respresents an opkg-command
-    #    readarray opkg_commands < <(cat $OPKG_CMDS_PSA_FILE)
-    #    for opkg_c in "${opkg_commands[@]}"; do
-    #        if grep -qE "^\s*[#]+.*$" <<< $opkg_c; then
-    #            continue    # found comment line
-    #        fi
-
-    #        # package manipulation commands without package:
-    #        local cwp="update|upgrade|clean"
-    #        # informational commands without package:
-    #        cwp="${cwp}|list|list-installed|list-upgradable"
-
-    #        if grep -qE "^.*\s+($cwp)\s+.*$" <<< $opkg_c; then
-    #            local p=$(printf '%s' "$opkg_c" | awk '{ print $NF }')
-    #            local opkg_output=()
-    #            if ! exec_opkg_info "$p" opkg_output; then
-    #                log_error "$func:${LINENO}: opkg info $opkg_c failed"
-    #                revert_customer_repository ; exit 1
-    #            fi
-
-    #            if ! check_md5_for_opkg_packages opkg_output; then
-    #                log_error "$func:${LINENO}: "\
-    #                    "wrong md5sum for opkg packages"
-    #                revert_customer_repository ; exit 1
-    #            fi
-    #        fi
-    #        
-    #        # perform a dry-run and check if everything might work as expected. 
-    #        if ! exec_opkg_noaction $opkg_c; then
-    #                log_error "$func:${LINENO}: "\
-    #                    "opkg --noaction $opkg_c failed"
-    #        fi
-
-    #        # Actually execute the opkg command
-    #        if ! exec_opkg $opkg_c; then
-    #            log_error "$func:${LINENO}: exec_opkg $opkg_c failed"
-    #            fallback_to_previous_version
-    #            revert_customer_repository ; exit 1
-    #        fi
-    #    done
-    #else
-    #    log_info "$func:${LINENO}: no opkg commands to execute"
-    #    update_psa_install_opkg_packages $UPDATE_ISMAS_PROGRESS \
-    #            $RC_SUCCESS "no opkg commands to execute"
-    #fi
-    
-    # Cleanup.
-    #if ! cleanup_previous_version; then
-    #    log_error "$func:${LINENO}: cleanup_previous_version failed"
-    #fi
-
-    # compute version string for current (i.e. new) version
-    compute_version
-
-    update_psa_cleanup $UPDATE_ISMAS_PROGRESS \
-        $RC_SUCCESS "cleanup after psa update"
-
-    # TODO
-    exit 0
 }