myshellconfig/bashrc_add

#!/bin/bash
#debug

#failure() {
#  local lineno=$1
#  local msg=$2
#  echo "Failed at $lineno: $msg"
#}
#trap 'failure ${LINENO} "$BASH_COMMAND"' ERR


# set some variables to defaults, if not set in .bashrc
[ -z ${SSHS+x} ] && export SSHS=false

# check if we are a interactive shell
# https://guide.bash.academy/expansions/
# https://www.tldp.org/LDP/abs/html/refcards.html#AEN22473
if [[ $- = *i* ]] ; then
    if [ "${bashrctmp:-x}" == "x" ]
    then
        #echo "interactive shell" >&2

        # define variables
        # Base Path
        [ -z "${MSC_SUBPATH+x}" ]                 && export MSC_SUBPATH=".local/myshellconfig"
        [ -z "${MSC_BASE+x}" ]                    && export MSC_BASE="${HOME}/${MSC_SUBPATH}"

        # hardcoded paths
        export MSC_BASE_PARENT="$(dirname $MSC_BASE)"
        export MSC_BASH_COMPLETION="${HOME}/${MSC_SUBPATH}/bash_completion.d"
        export MSC_GIT_UPD_SUBMOD_STATFILE="${MSC_BASE%/}${MSC_BASE:+/}.last_update_submodules" 
        export MSC_GIT_UPD_REPO_STATFILE="${MSC_BASE%/}${MSC_BASE:+/}.last_update_repo" 

        # Load DEFAULTS
        [ -e ${MSC_BASE}/defaults.conf ] && . ${MSC_BASE}/defaults.conf


        # Userdata
        [ -z "${USERNAME+x}" ]  && export USERNAME="$USER"
        [ -z "${USEREMAIL+x}" ] && export USEREMAIL="$USER@$(domainname -d)"
        [ -z "${FULLNAME+x}" ]  && export FULLNAME="$(getent passwd $USER | cut -d ":" -f 5 | cut -d ',' -f 1)"
        
        # GIT
        [ -z "${GIT_AUTHOR_NAME+x}" ]       && export GIT_AUTHOR_NAME=$FULLNAME
        [ -z "${GIT_AUTHOR_EMAIL+x}" ]      && export GIT_AUTHOR_EMAIL=$USEREMAIL
        [ -z "${GIT_COMMITTER_NAME+x}" ]    && export GIT_COMMITTER_NAME=$FULLNAME
        [ -z "${GIT_COMMITTER_EMAIL+x}" ]   && export GIT_COMMITTER_EMAIL=$USEREMAIL

    #    [ -z "${MSC_GIT_TIMEOUT+x}" ]                           && export MSC_GIT_TIMEOUT=5s
        [ -z "${MSC_GIT_CHECKOUT_TIMEOUT+x}" ]                  && export MSC_GIT_CHECKOUT_TIMEOUT=20s
        [ -z "${MSC_GIT_SYNC+x}" ]                              && export MSC_GIT_SYNC=true
        
        # hardcoded git
        export MSC_GIT="git -C ${MSC_BASE}" 


        
        # git-repo-url for vim plugin
        # TODO: check how to use
        export MSC_VIM_PLUGINS


        # Logging
        [ -z "${MSC_LOGDIR+x}" ]                && export MSC_LOGDIR="${HOME}/logs"
        [ -z "${MSC_LOGFILE+x}" ]               && export MSC_LOGFILE="${MSC_LOGDIR}/myshellconfig.log"
        [ -z "${SCRIPT_LOG+x}" ]                && export SCRIPT_LOG="${MSC_LOGFILE}"
        # Create necessary directories for logging
        [ -n "${MSC_LOGDIR-x}" ]                && mkdir -p "$MSC_LOGDIR"
        # load logging functions
        . ${MSC_BASE}/logging

        # P11M for etoken/smartcard authentification
        # Use PKCS11_MODULE or P11M (comes from ssh, when connected from remote) only in context of startagent/loadagent
        
    #    which dnf >/dev/null 2>&1 [ -z "${P11M+x}" ] && P11M="$(dnf repoquery --installed -l p11-kit | grep \/p11-kit-proxy.so\$ | head -1)"
    #    which dpkg >/dev/null 2>&1 && [ -z "${P11M+x}" ] && P11M="$(dpkg -L p11-kit-modules|grep \/p11-kit-proxy.so\$ | head -1)"

        
        # Basics
        [ -z "${VISUAL+x}" ]    && export VISUAL=${VISUAL_DEFAULT}
        [ -z "${EDITOR+x}" ]    && export EDITOR=${EDITOR_DEFAULT}

        cat << EOF >> "${MSC_LOGFILE}"
==8<=== start configure new shell ============== $(date) ===============8<==

EOF

        SCRIPTENTRY
        # define functions

        ckrepo () {
            # check if remote repo is reachable
            if ${MSC_GIT_SYNC-$MSC_GIT_REPO_UPDATE}; then

                if [ $(stat --printf %Y ${MSC_GIT_UPD_REPO_STATFILE}  2>/dev/null || echo 0 ) \
                    -lt $(date --date="${MSC_GIT_REPO_UPDATE_INTERVALL-${MSC_GIT_REPO_UPDATE_INTERVALL_DEFAULT}} hours ago" "+%s") ]; then
                    logwarning "sync-intervall (${MSC_GIT_REPO_UPDATE_INTERVALL-${MSC_GIT_REPO_UPDATE_INTERVALL_DEFAULT}} hours) reached"
                    loginfo "check if remote »$($MSC_GIT rev-parse --abbrev-ref @{u} 2>/dev/null | cut -d'/' -f1)« is reachable"
                    if $MSC_GIT fetch --dry-run >/dev/null  2>&1 ;then 
                        loginfo "reachable"
                        return 0
                    else 
                        logwarning "$($MSC_GIT rev-parse --abbrev-ref @{u} 2>/dev/null | cut -d'/' -f1) not reachable"
                        return 3
                    fi
                else
                    local seconds=$(( $( date --date="@$(stat --printf %Y ${MSC_GIT_UPD_REPO_STATFILE}  2>/dev/null || echo 0 )" "+%s") - $(date --date="${MSC_GIT_REPO_UPDATE_INTERVALL-${MSC_GIT_REPO_UPDATE_INTERVALL_DEFAULT}} hours ago" "+%s")  ))
                    logwarning "repo sync-intervall (${MSC_GIT_REPO_UPDATE_INTERVALL-${MSC_GIT_REPO_UPDATE_INTERVALL_DEFAULT}} hours) not reached yet. $((seconds/86400)) days $(date -d "1970-01-01 + $seconds seconds" "+%H hours %M minutes %S seconds") left."
                    return 2
                fi
            else
                logwarning "no sync allowed from config" >&2
                return 1
            fi

        }

        lastupdatesubmodules () {
            touch ${MSC_GIT_UPD_SUBMOD_STATFILE}
        }
        export -f lastupdatesubmodules

        lastupdaterepo () {
            touch ${MSC_GIT_UPD_REPO_STATFILE}
        }
        export -f lastupdaterepo

        sync_config () {
            if $MSC_GIT_SYNC; then
                local nok=""
                local gco=""
                if which git >/dev/null; then
                    loginfo -n "Sync config with ${MSC_GIT_SERVER}: " 
                    # MSC_GITCHECKOUTSCRIPT_OPTIONS are options for bin/git-myshellconfig-checkout
                    ${MSC_BASE}/bin/git-myshellconfig-checkout ${MSC_GIT_CHECKOUTSCRIPT_OPTIONS=${MSC_GIT_CHECKOUTSCRIPT_OPTIONS_DEFAULT}}|| nok="not " 1>>"${MSC_LOGFILE}" 2>&1 
                    loginfo "$(printf '%s\n' "${nok}synced" )"
                    [ -z "$nok"  ] && mkdir -pv "${MSC_LOGDIR}"

                else
                    logwarning "git not installed, no configuration possible, please install git" >&2
                fi
            else
                logwarning "Not syncing profile in case of configuration"
            fi
        }


        pathmunge () {
            ENTRY
            case ":${PATH}:" in
                *:"$1":*)
                    ;;
                *)
                    if [ "$2" = "after" ] ; then
                        PATH=$PATH:$1
                    else
                        PATH=$1:$PATH
                    fi
            esac
            EXIT
        }

        if [ -d "${MSC_BASE}/bin" ] ; then
            pathmunge "${MSC_BASE}/bin"
            export PATH
        fi

        if [ -d "${HOME}/.local/bin" ] ; then
            pathmunge "${HOME}/.local/bin"
            export PATH
        fi

        # Check for interactive bash and that we haven't already been sourced.
        if [ -n "${BASH_VERSION-}" -a -n "${PS1-}" -a -z "${BASH_COMPLETION_VERSINFO-}" ]; then

            # Check for recent enough version of bash.
            if [ ${BASH_VERSINFO[0]} -gt 4 ] || \
               [ ${BASH_VERSINFO[0]} -eq 4 -a ${BASH_VERSINFO[1]} -ge 1 ]; then
                [ -r "${XDG_CONFIG_HOME:-$HOME/.config}/bash_completion" ] && \
                    . "${XDG_CONFIG_HOME:-$HOME/.config}/bash_completion"
                if shopt -q progcomp && [ -r /usr/share/bash-completion/bash_completion ]; then
                    # Source completion code.
                    logdebug "Source bash-completion"
                    . /usr/share/bash-completion/bash_completion
                fi
            fi

        fi

        # source git-sync part of myshellconfig
        . "${MSC_BASE}/myshell_git_sync"

        # source loading defaults part of myshellconfig
        . "${MSC_BASE}/myshell_load_defaults"

        # source loading workaround for x2go to forward local etoken to remote machine with forwardagent
        . "${MSC_BASE}/myshell_load_x2go_tokenforward"

        _tmux_hook
        _umask_hook
        #_pkcs11module_hook
        promptcommandmunge "_tmux_hook"
        promptcommandmunge "_umask_hook"
        #promptcommandmunge "_pkcs11module_hook"
        promptcommandmunge "_bashrc_tmp_hook"
        which direnv >/dev/null && eval "$(direnv hook bash)"
      
        cat << EOF >> "${MSC_LOGFILE}"
==8<=== finished configure new shell ================ $(date) ===============8<==

EOF
    #else
    #    echo "non-interactive shell" >&2
        SCRIPTEXIT

        # Start tmux if not defined as STARTTMUX in bashrc
        logdebug "start tmux ${STARTTMUXDEFAULT} - ${STARTTMUXREMOTEDEFAULT} - ${STARTTMUX-$STARTTMUXDEFAULT}"
        if ${STARTTMUX-$STARTTMUXDEFAULT} ; then
            cat << EOF

"User: $USER - $UID - $SSH_CONNECTION"

Starting or resuming screen session
Press CTRL+C to cancel screen startup

EOF
            sleep 1
            #screen -UxR
            tmux attach-session
            logdebug "started tmux"
        fi
        logdebug "after"
    else
        [ -e "${bashrctmp}" ] && exec bash --rcfile "${bashrctmp}"
    fi

fi