ACF Libraries

ACF Libraries

Because of using lua, a very small language, the need arises to build everything from scratch. This can lead to some confusion, apprehension, or just feeling overwhelmed. Here is documentation on what we have now in the form of libraries and common functions. We hope to build some more and use this information to get the juices flowing in regard to ACF.

Some of these are lua libs or ones written for ACF. We are also using as a standard the lposix library which is documented here LPOSIX

Generic Libraries (acf-lib)

apk.lua

Functions to load/unload apk packages

• repository
• get_all
• get_loaded
• get_available
• delete
• install
• is_installed

date.lua

Date and time functions To be used with os.time() and os.date()

• date_to_seconds - Takes a date table and converts it to seconds from 1970
• seconds_to_date - Takes table of seconds values and converts to a date sorted smallest to largest
• string_to_table
• date_diff - Takes two values of seconds and gives back the difference
• num_month_name - Month number to name of month
• num_month_name_abr - Month number to abr of month
• name_month_num - Month name to number
• abr_month_num - Month abbreviation to number
• num_dow_name - Day of Week number to name
• num_dow_name_abr - Day of week number to abbreviation
• name_dow_num - Day of Week full name to number
• abr_dow_num - Day of week abbreviation to number
• what_tz - Checks to see what timezone the box is set to; /etc/TZ
• change_tz - Changes the timezone
  • Tables are included with this information
    • Timezones
    • Days of Week
    • Months of the Year

format.lua

Used to format tables and strings

• dostounix - converts dos line endings to unix
• parse_lines - takes out the blank and commented lines
• parse_linesandwords
• parse_configfile
• search_replace - will go through a file or table and search and replace
• search_for_lines - will go through a file and return a table with matches
• cap_begin_word - will capitalize beginning of words
• string_to_table - takes a delimited string and turns it into a table
• md5sum_string
• expand_bash_syntax_vars
• replace_line
• insert_line
• get_line
• opts_to_table
• table_to_opts
• update_ini_file
• parse_ini_file
• get_ini_section
• set_ini_section

fs.lua

Used for various filesystem specific functions

• is_dir - test if the path is a directory
• is_file - test if the path is a file
• is_link - test if the path is a link
• create_file
• read_file / read_file_as_array - will read a file as a string / array
• write_file - replace contents of a file
• write_line_file - appends lines to a file
• md5sum_file - give a hash, md5sum of a file
• find - Give a path and a search string and iterate over matching files
• stat

html.lua

Functions used by web_elements.lua. Written by nangel for ACF.

• cookie.set -creates a cookie to be used with ACF
• cookie.unset
• html_escape - will escape html encoded strings
• entity
• link
• cfe_unpack - returns the whole of a cfe as a string. Great for troubleshooting.
• Form setup functions - also are the "types" of cfe. See ACF_core_principles
  • form.text
  • form.longtext
  • form.password
  • form.hidden
  • form.submit
  • form.action
  • form.file
  • form.image
  • form.select
  • form.checkbox
  • form.start
  • form.stop

processinfo.lua

• package_version
• process_botsequence
• daemoncontrol
• pidof - find the process ID of a running program

validator.lua

This contains multiple different functions that each will validate input in there own way.

• is_string
• is_boolean
• is_number
• is_ipv4 - test if this is a valid ipv4 address
• is_partial_ipv4
• is_mac - test to see if this is a valid mac address
• is_integer - is the number and int
• is_integer_in_range - is the int in the range of numbers
• is_port - the the number in the ip port range
• is_valid_filename

ACF-specific Libraries (acf-core)

authenticator.lua

Authentication module. This module loads one sub-authenticator module and exposes its functionality via auth table.

• authenticate
• get_userinfo
• get_userinfo_roles
• list_users
• change_settings
• new_settings
• delete_user

authenticator-plaintext.lua

Authentication sub-module for plaintext database

• list_fields
• read_field
• delete_field
• write_entry
• read_entry
• delete_entry

controllerfunctions.lua

Controller helper functions

• handle_clientdata
• handle_form
• handle_startstop

menubuilder.lua

Written by nangel for ACF

• get_menuitems

modelfunctions.lua

• getenabled
• startstop_service
• getstatus
• getfiledetails
• setfiledetails
• validateselect
• validatemulti
• write_file_with_audit

roles.lua

• list_controllers
• get_controllers
• get_controllers_func
• get_controllers_view
• list_default_roles
• list_roles
• list_all_roles
• get_roles_perm
• get_role_perm
• delete_role
• set_role_perm

session.lua

Written by nangel for ACF.

• random_hash - will create a bash64-like hash from /dev/urandom
• hash_ip_addr - create a hash encoded ip address
• ip_addr_from_hash - take the hash encoded ip and give me the ip
• serialize - go through a table or set of tables and serialize
• save_session - save the session table
• load_session - load a saved session table
• unlink_session - delete a saved session table
• record_event - record an invalid login attempt
• count_events - check if there are too many invalid attempts
• expired_events - delete the expired invalid attempts and saved sessions

viewfunctions.lua

displayinfo - obsolete displaymanagement - obsolete

• displayitem
• displayformitem
• displayform
• displaycommandresults