Adding bin/pull-known-hosts

diff --git a/bin/pull-known-hosts b/bin/pull-known-hosts
new file mode 100755 (executable)
index 0000000..cc084ce
--- /dev/null
+++ b/bin/pull-known-hosts
@@ -0,0 +1,303 @@
+#!/bin/bash
+
+set -e
+set -u
+
+BASE_NAME="$( basename ${0} )"
+MY_REAL_NAME=$( readlink -f $0 )
+BIN_DIR=$( dirname "${MY_REAL_NAME}" )
+BASE_DIR=$( dirname "${BIN_DIR}" )
+LIB_DIR="${BASE_DIR}/lib"
+CONF_DIR="${BASE_DIR}/etc"
+
+if [[ -f "${LIB_DIR}/functions.rc" ]] ; then
+    . "${LIB_DIR}/functions.rc"
+else
+    echo "Bash resource file '${LIB_DIR}/functions.rc' not found" >&2
+    exit 5
+fi
+
+GIT_WORKDIR="${HOME}/Develop/gitlab-pp/ppadmin/known_hosts"
+ONESHOT="n"
+SLEEP_ONLINE=300
+SLEEP_OFFLINE=3600
+GIT_HOST="git.pixelpark.com"
+
+DESCRIPTION=$( cat <<-EOF
+       Updating Git repository below '${CYAN}${GIT_WORKDIR}${NORMAL}'."
+
+       EOF
+)
+
+detect_color
+
+#------------------------------------------------------------------------------
+usage() {
+    cat <<-EOF
+       Usage: ${BASE_NAME} [-D DIRECTORY] [-o|-1|--oneshot] [-S SECONDS] [-O SECONDS] [Common Options]
+              ${BASE_NAME} [-h|--help]
+              ${BASE_NAME} [-V|--version]
+
+           Common Options:
+       ${STD_USAGE_MSG}
+
+           Backup Options:
+               -D|--dir|--workdir DIRECTORY
+                               The working directory, which to update. Defaults to '${CYAN}${GIT_WORKDIR}${NORMAL}'.
+               -o|-1|--oneshot Do not run in an infinite loop, leave this script after the first execution.
+               -S|--sleep-online SECONDS
+                               Sleep so many seconds after an successful execution of '${CYAN}git pull${NORMAL}'.
+                               Defaults to ${CYAN}${SLEEP_ONLINE} seconds${NORMAL}.
+               -O|--sleep-offline SECONDS
+                               Sleep so many seconds after a not successful attempt to execute '${CYAN}git pull${NORMAL}'.
+                               Defaults to ${CYAN}${SLEEP_OFFLINE} seconds${NORMAL}.
+       EOF
+
+}
+
+#------------------------------------------------------------------------------
+eval_my_options() {
+
+    REMAINING_ARGS=()
+    REMAINING_OPTS=()
+
+    if [[ "$#" -gt 0 ]] ; then
+        while true ; do
+            case "$1" in
+                -D|--dir|--workdir)
+                    GIT_WORKDIR="$2"
+                    shift
+                    shift
+                    ;;
+                -o|-1|--oneshot)
+                    ONESHOT="y"
+                    shift
+                    ;;
+                -S|--sleep-online)
+                    SLEEP_ONLINE="$2"
+                    shift
+                    shift
+                    ;;
+                -O|--sleep-offline)
+                    SLEEP_OFFLINE="$2"
+                    shift
+                    shift
+                    ;;
+                --) shift
+                    break
+                    ;;
+                *)  REMAINING_OPTS+=($1)
+                    shift
+                    ;;
+            esac
+        done
+    fi
+
+    if [[ "$#" -gt "0" ]] ; then
+        REMAINING_ARGS=("--")
+        while [[ "$#" -gt "0" ]]  ; do
+            REMAINING_ARGS+=($1)
+            shift
+        done
+    fi
+
+    debug "Git working directory: '${CYAN}${GIT_WORKDIR}${NORMAL}'"
+    debug "Sleeps: online ${CYAN}${SLEEP_ONLINE} seconds${NORMAL}, offline ${CYAN}${SLEEP_OFFLINE} seconds${NORMAL}."
+}
+
+#------------------------------------------------------------------------------
+get_options() {
+
+    local tmp=
+    local base_dir=
+
+    local this_short_options='D:o1S:O:'
+    local this_long_options='dir:,workdir:,oneshot:,sleep-online:,sleep-offline:'
+
+    set +e
+    tmp=$( getopt -o "${STD_SHORT_OPTIONS}${this_short_options}" \
+                  --long "${STD_LONG_OPTIONS},${this_long_options}" \
+                  -n "${BASE_NAME}" -- "$@" )
+    if [[ $? != 0 ]] ; then
+        echo "" >&2
+        usage >&2
+        exit 1
+    fi
+    set -e
+
+    # Note the quotes around `$TEMP': they are essential!
+    eval set -- "${tmp}"
+    eval_common_options "$@"
+    if [[ "${DEBUG}" == 'y' ]] ; then
+        declare -p REMAINING_OPTS
+        declare -p REMAINING_ARGS
+    fi
+
+    eval_my_options "${REMAINING_OPTS[@]}" -- "${REMAINING_ARGS[@]}"
+
+    if [[ "${#REMAINING_OPTS[@]}" -gt 0 ]] ; then
+        error "Unknown options: ${REMAINING_OPTS[*]}"
+        echo >&2
+        usage >&2
+        exit 2
+    fi
+
+    if [[ "${#REMAINING_ARGS[@]}" -gt 0 ]] ; then
+        error "Invalid arguments: ${REMAINING_ARGS[*]}"
+        echo >&2
+        usage >&2
+        exit 2
+    fi
+
+}
+
+#------------------------------------------------------------------------------
+check_preferences() {
+
+    info "Checking preferences ..."
+    local all_ok="y"
+
+    local -a tools=('git' 'zenity' )
+    local tool=
+    local folder=
+
+    for tool in "${tools[@]}" ; do
+        debug "Checking for '${CYAN}${tool}${NORMAL}' ..."
+        if type -p ${tool} >/dev/null ; then
+            :
+        else
+            all_ok="n"
+            error "Did not found '${RED}${tool}${NORMAL}'. Maybe not installed?"
+        fi
+    done
+
+    for folder in "${GIT_WORKDIR}" "${GIT_WORKDIR}/.git" ; do
+        debug "Checking for directory '${CYAN}${folder}${NORMAL}' ..."
+        if [[ ! -d "${folder}" ]]; then
+            all_ok="n"
+            error "Did not found directory '${RED}${folder}${NORMAL}'."
+        fi
+    done
+
+    local dir_owner=$(stat --format '%U' "${GIT_WORKDIR}" )
+    local cur_user=$( id -u -n )
+    debug "Checking match directory owner '${CYAN}${dir_owner}${NORMAL}' to current user '${CYAN}${cur_user}${NORMAL}' ..."
+    if [[ "${dir_owner}" != "${cur_user}" ]] ; then
+        all_ok="n"
+        error "Current user '${RED}${cur_user}${NORMAL}' is not directory owner '${RED}${dir_owner}${NORMAL}'."
+    fi
+
+    if [[ "${all_ok}" != "y" ]] ; then
+        exit 5
+    fi
+
+}
+
+#------------------------------------------------------------------------------
+sleep_seconds() {
+
+    local sleep_time="$1"
+    local i=0
+
+    debug "Sleeping for ${CYAN}${sleep_time} seconds${NORMAL} ..."
+    while [[ "$i" -lt "${sleep_time}" ]] ; do
+        sleep 1
+        i=$(( $i + 1 ))
+    done
+
+}
+
+#------------------------------------------------------------------------------
+do_update() {
+
+    local msg=
+    local git_out=
+    local git_ret=
+    local head_current=
+    local head_new=
+
+    if cd "${GIT_WORKDIR}" ; then
+        :
+    else
+        error "Could not change into '${RED}${GIT_WORKDIR}${NORMAL}'."
+        zenity --error --text "Could not change to directory '${GIT_WORKDIR}'"
+        exit 5
+    fi
+
+    while true; do
+
+        info "Waking up ..."
+
+        debug "Checking for Git host '${CYAN}${GIT_HOST}${NORMAL}' ..."
+        if ping -q -c3 -W 5 git.pixelpark.com >/dev/null 2>&1 ; then
+            :
+        else
+            msg="Git host '${GIT_HOST}' is currently not available. "
+            msg+="Possibly VPN is down."
+            if [[ "${ONESHOT}" == "y" ]] ; then
+                warn "${msg}"
+                zenity --notification --title "${BASE_NAME}" --text "${msg}"
+                break
+            fi
+            msg+=" Trying again later."
+            warn "${msg}"
+            zenity --notification --title "${BASE_NAME}" --text "${msg}"
+            sleep_seconds "${SLEEP_OFFLINE}"
+            continue
+        fi
+
+        head_current=$( git log --oneline HEAD | head -n1 | awk '{print $1}' )
+        set +e
+        git_out=$( git pull 2>&1 )
+        git_ret="$?"
+        set -e
+        if [[ "${git_ret}" != "0" ]] ; then
+            msg="Pulling known_hosts failed, please investigate: ${git_out}"
+            error "${msg}"
+            zenity --notification --title "${BASE_NAME}" --text "${msg}"
+            if [[ "${ONESHOT}" == "y" ]] ; then
+                break
+            fi
+            sleep_seconds "${SLEEP_ONLINE}"
+            continue
+        fi
+        head_new=$( git log --oneline HEAD | head -n1 | awk '{print $1}' )
+        if [[ "${head_current}" == "${head_new}" ]] ; then
+            info "No changes to known_hosts detected. Doing nothing."
+        else
+            msg="The known_hosts repository has been pulled successfully."
+            info "${msg}"
+            zenity --notification --title "${BASE_NAME}" --text "${msg}"
+        fi
+        if [[ "${ONESHOT}" == "y" ]] ; then
+            break
+        fi
+        sleep_seconds "${SLEEP_ONLINE}"
+
+    done
+
+}
+
+#------------------------------------------------------------------------------
+main() {
+
+    get_options "$@"
+    umask 0022
+
+    empty_line
+    dline
+    info "Starting update of Git working directory '${CYAN}${GIT_WORKDIR}${NORMAL}' ..."
+    empty_line
+
+    check_preferences
+    do_update
+
+    info "Finished."
+}
+
+main "$@"
+
+exit 0
+
+
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4 list

diff --git a/lib/functions.rc b/lib/functions.rc
index 89d690060d6d1d2a21b60347dfc4f1bbc90a4551..d124156140ddc4320b0916b7f3e88003ec34d7ae 100644 (file)
--- a/lib/functions.rc
+++ b/lib/functions.rc
@@ -10,7 +10,7 @@ BLUE=""
 CYAN=""
 NORMAL=""
 
-VERSION="0.4.0"
+VERSION="0.4.1"
 
 STD_SHORT_OPTIONS="sdvqhV"
 STD_LONG_OPTIONS="simulate,debug,verbose,quiet,nocolor,help,version"