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Dir : ~/proc/thread-self/root/usr/share/uwsgi/init/
View File Name : do_command

#!/bin/bash

# This is shell script, sourced by uWSGI init.d script

. /usr/share/uwsgi/init/snippets
. /usr/share/uwsgi/init/specific_daemon

do_command()
{
  local COMMAND="$1"
  shift

  local ERRORS=0
  local CONFSPEC_PATH=""
  local SOME_CONF_WAS_FOUND=no
  local UWSGI_APPS_CONFDIRS

  # If command is given with arguments, i.e. 'start smth smth_else'
  if [ -n "$1" ]; then
    [ "$VERBOSE" != no ] && log_progress_msg "->"

    # Iterate over given configuration file specifications and:
    # * either print notice that conforming conffile wasn't found (if it
    #   wasn't)
    # * or execute given command with conforming conffile
    for CONFSPEC in "$@"; do
      CONFSPEC_RELPATH="$(relative_path_to_conffile_with_spec "$CONFSPEC")"
      if [ -z "${CONFSPEC_RELPATH}" ]; then
        log_progress_not_found "$CONFSPEC"
      else
        do_with_given_specific_daemon "$COMMAND" "$CONFSPEC_RELPATH"
        ERRORS="$((ERRORS+$?))"
      fi
    done

    [ "$ERRORS" -eq 0 ] && log_progress_done

    return "$ERRORS"
  fi

  # shellcheck disable=SC2086
  UWSGI_APPS_CONFDIRS="$(ls -1d ${UWSGI_APPS_CONFDIR_GLOB})"

  # This construction is needed for supporting configuration file names with
  # spaces or control characters.
  #
  # See http://www.dwheeler.com/essays/filenames-in-shell.html (paragraph #4).
  #
  # Predefined delimeters are resetted to null character (by changing IFS and
  # setting -d option of 'read' command) and then:
  # * 'find -print0' command is used for finding all available confnames
  # * 'while ... read' loop is used for iterating over found confnames
  # 
  # Also process substitution is used, so that variables changed inside 'while'
  # loop will retain their values after exiting from loop.
  #
  # By default 'find' command use emacs-style regexps. Emacs-style regexp
  # processor with given regexp doesn't matches to file names with newline
  # character. Posix-style regexp processor is working good.
  #
  # With executing 'sed' over found paths, relative configuration file
  # paths are extracted from full paths provided with 'find' output.
  # Firstly, common directory path (UWSGI_CONFDIR) is stripped from 'find'
  # output. Secondly, all directories (except the first) and file extensions
  # are stripped from result of first substitution.
  #
  # For example: list of found paths
  # '/etc/uwsgi/apps-enabled/site.ini\0/etc/uwsgi/apps-enabled/dir/site2.ini'
  # is transformed by sed into 'apps-enabled/site\0apps-enabled/site2'.
  while IFS="" read -r -d "" RELATIVE_CONFPATH <&4 ; do
    if [ "$SOME_CONF_WAS_FOUND" = no ] && [ "$VERBOSE" != no ]; then
      log_progress_msg "->"
    fi
    SOME_CONF_WAS_FOUND=yes
    do_with_given_specific_daemon "$COMMAND" "$RELATIVE_CONFPATH"
    ERRORS="$((ERRORS+$?))"
  done 4< <(find "$UWSGI_APPS_CONFDIRS" \
                  -regextype posix-basic \
                  -iregex ".*\\.${UWSGI_CONFFILE_TYPES_REGEXP}\$" -a -xtype f \
                  -print0 \
            | sed -e "s:\\(^\\|\\x0\\)${UWSGI_CONFDIR}/:\\1:g" \
                  -e "s:\\([^\\x0/]\\+\\)\\([^\\x0]\\+\\)\\?/\\([^/\\x0]\\+\\)\\.${UWSGI_CONFFILE_TYPES_REGEXP}\\x0:\\1/\\3\\x0:g" \
            | sort --zero-terminated --unique \
            )

  if [ "$VERBOSE" != no ]; then
    if [ "$SOME_CONF_WAS_FOUND" = no ]; then
      log_progress_msg "(omitted; missing conffile(s) in ${UWSGI_APPS_CONFDIR_GLOB})"
    elif [ "$ERRORS" -eq 0 ]; then
      log_progress_done
    fi
  fi

  return "$ERRORS"
}

do_with_given_specific_daemon()
{
  local COMMAND="$1"
  shift
  local RELATIVE_CONFPATH="$*"

  local ERRORS=0

  case "$COMMAND" in
    start)        do_start_specific_daemon "$RELATIVE_CONFPATH" ;;
    stop)         do_stop_specific_daemon "$RELATIVE_CONFPATH" ;;
    force-reload) do_force_reload_specific_daemon "$RELATIVE_CONFPATH" ;;
    reload|*)     do_reload_specific_daemon "$RELATIVE_CONFPATH" ;;
  esac
  case "$?" in
    0) log_progress_ok "$RELATIVE_CONFPATH" ;;
    1) log_progress_skip "$RELATIVE_CONFPATH" ;;
    *) log_progress_error "$RELATIVE_CONFPATH"
       ERRORS=1
    ;;
  esac

  return "$ERRORS"
}

# Print progress notification about successful command execution.
log_progress_ok()
{
  local RELATIVE_CONFPATH="$*"
  local CONFNAME=""

  [ "$VERBOSE" = no ] && return

  if [ "$PRINT_CONFNAMES_IN_INITD_SCRIPT_OUTPUT" != no ]; then
    CONFNAME="$(make_confname_for_progress_log "$RELATIVE_CONFPATH")"
    log_progress_msg "$CONFNAME"
  else
    log_progress_msg '.'
  fi
}

# Print progress notification about skipped command execution.
#
# It is printed, for example, when 'start' command was issued, but specific
# daemon is already started. Or when 'stop' command was issued, but specific
# daemon isn't runned yet.
log_progress_skip()
{
  local RELATIVE_CONFPATH="$*"
  local CONFNAME=""

  [ "$VERBOSE" = no ] && return

  if [ "$PRINT_CONFNAMES_IN_INITD_SCRIPT_OUTPUT" != no ]; then
    CONFNAME="$(make_confname_for_progress_log "$RELATIVE_CONFPATH")"
    log_progress_msg "(${CONFNAME})"
  else
    log_progress_msg "."
  fi
}

# Print progress notification about missing configuration file with given
# name.
log_progress_not_found()
{
  local RELATIVE_CONFPATH="$*"
  local CONFNAME=""

  [ "$VERBOSE" = no ] && return

  if [ "$PRINT_CONFNAMES_IN_INITD_SCRIPT_OUTPUT" != no ]; then
    CONFNAME="$(make_confname_for_progress_log "$RELATIVE_CONFPATH")"
  fi

  log_progress_msg "${CONFNAME}?"
}

# Print progress notification about failed command execution.
log_progress_error()
{
  local RELATIVE_CONFPATH="$*"
  local CONFNAME=""

  [ "$VERBOSE" = no ] && return

  if [ "$PRINT_CONFNAMES_IN_INITD_SCRIPT_OUTPUT" != no ]; then
    CONFNAME="$(make_confname_for_progress_log "$RELATIVE_CONFPATH")"
  fi

  log_progress_msg "${CONFNAME}!"
}

log_progress_done()
{
  log_progress_msg "done"
}

make_confname_for_progress_log()
{
  local RELATIVE_CONFPATH="$*"
  local CONFNAMESPACE
  local CONFNAME

  CONFNAMESPACE="$(extract_confnamespace "$RELATIVE_CONFPATH")"
  CONFNAME="$(extract_confname "$RELATIVE_CONFPATH")"

  sanitize_confname "${CONFNAMESPACE}/${CONFNAME}"
}

# Sanitize configuration file name for printing it in terminal.
sanitize_confname()
{
  local CONFNAME="$*"

  # In sanitizing:
  # * all control ASCII characters are replaced with '?' character
  # * confname with spaces is surrounded by single quotes.
  CONFNAME="$(echo -n "$CONFNAME" | tr '\001-\037\177' '?')"
  case "$CONFNAME" in
    *[[:space:]]*) echo "'$CONFNAME'" ;;
    *)             echo "$CONFNAME"   ;;
  esac
}