path: root/CHANGELOG

Firma CHANGELOG
---------------

30/08/2005 - 0.3-cvs (rev 1.33) - rhatto

  - Added GPL copyright notice and firma contact email

23/08/2005 - 0.3-cvs (rev 1.32) - luis - released as firma 0.2.5

  - Fixed a possible infinite loop (added on rev 1.30) on function
    GetMessageHeaders. It could be triggered, for example, by a
    message without a body.

  - Like the other header variables (FROM, SUBJECT), the variable
    DATE now holds only the given date and no longer the entire
    "Date:" line.

17/08/2005 - 0.3-cvs (rev 1.31) - luis

  - On function GetMessage, renamed variable "STDIN"
    to "stdin" and declared it as local.

17/08/2005 - 0.3-cvs (rev 1.30) - luis

  - Changed project description to: "firma: GnuPG-based encrypted
    mailing list manager"

  - Declared/renamed/removed variables and arrays:
    o Configuration file variables:
    MAIL      -> MAIL_AGENT
    MAIL_ARGS -> MAIL_AGENT_ARGS
    GPG       -> GPG_BINARY
    LISTNAME  -> LIST_ADDRESS
    LISTADMIN -> LIST_ADMIN
    GPGDIR    -> LIST_HOMEDIR
    PASSWD    -> PASSPHRASE

    o GnuPG variables:
    GPGFLAGS   -> GPG_FLAGS
    GPGCOMMAND -> GPG
    GPGLIST    -> GPG_LIST_KEYS
    GPGDECRYPT -> GPG_DECRYPT
    GPGENCRYPT -> GPG_ENCRYPT

    o Other global variables:
    FIRMA_LIST_PATH -> LISTS_DIR
    FROMADD         -> SENDER_ADDRESS
    array           -> ARRAY
    CONFIG_FILE     -> LIST_NAME
    CONFIG_PATH     -> LIST_PATH
    CONFIG          -> LIST_CONFIG_FILE
    LINES, n, i     -> ( removed )
    ( new )         -> FIRMA_CONFIG_FILE
    o Global arrays:
    MESSAGE       -> ORIG_MESSAGE
    GPG_MESSAGE   -> ORIG_GPG_MESSAGE
    LIST_MESSAGE  -> MESSAGE_BODY
    USED_ARRAYS   -> GLOBAL_ARRAYS
    ADMINCOMMANDS -> ( removed )
    ( new )       -> ORIG_MESSAGE_HEADERS

    o Local variables:
    ADMIN   -> administrator
    EMAIL   -> email
    KEYID   -> keyid
    signal  -> ( removed )
    ( new ) -> element, i, j, uid_count, chosen_uid_number

  - firma now uses two different configuration files: a general one,
    containing the variables MAIL_AGENT, MAIL_AGENT_ARGS, GPG_BINARY and
    LISTS_DIR, and a list specific file, containing the variables
    LIST_ADDRESS, LIST_ADMIN, LIST_HOMEDIR and PASSPHRASE.

  - Edited the comments at the beggining of the script to reflect the
    change above.

  - As suggested by the Advanced Bash-Scripting Guide (ABSG)[1], added
    descriptive headers to all functions, describing its function, what
    it expects as input, on what other functions it depends and what exit
    codes it returns.

  - Also as suggested by the ABSG[1], renamed all functions from
    all_lower_case_names to MixedCaseNames.

  - Renamed some functions to make their use more clear:
      gpg_args            -> DeclareGpgVars
      check_config        -> split into two: CheckFirmaConfigFile
                                           and CheckListConfigFile
      get_gpg_stderr      -> GetGpgDecryptStderr
      message_list        -> SendListMessage
      message_list_error  -> SendWarningMessage
      message_list_return -> SendBounceMessage
      list_admin          -> ListAdministration

  - Added some more GnuPG flags:
    o To the GPG_FLAGS variable: --no-options, --no-default-keyring,
        --no-auto-check-trustdb
    o And to the GPG_ENCRYPT variable: --local-user $LIST_ADDRESS,
        --no-emit-version, --trust-model always
    The last one replaced the "--always-trust" option, since its
    deprecated according to GnuPG's manual.

  - Minor changes on functions: Usage, Check*ConfigFile, GetMessage,
    GetSubscribersList, SendListMessage, SendWarningMessage,
    SendBounceMessage, ProcessMessage, NewList and ChooseUid

    o Usage:
      Explained what options expect an argument;
      Commented out the -r (--list-request) option description, since
        it's not implemented yet;
      Added a description of the administrative tasks accepted by the
        -a option;
      Other minor changes.

    o Check*ConfigFile:
      Added a check to see if the LISTS_DIR is an existing directory;
      Added a check to avoid more than 3 sequential repetitions of the
        same character in the PASSPHRASE;
      Other minor changes in the PASSPHRASE, LIST_ADDRESS and
        LIST_ADMIN checks.
    o GetMessage:
      Added a check to see if the message was successfully stored in
        the ORIG_MESSAGE array.

    o GetSubscribersList:
      Added a check to see if there are any subscribers to send
        messages to in a given list.

    o SendListMessage, SendWarningMessage, SendBounceMessage:
      Just minor changes.

    o ProcessMessage:
      (* SECURITY FIX *) A public key with an UID containing GOODSIG
        in its name, comment or email address would be able to send
        messages to any list. And a UID containing BADSIG in any of
        these fields, would be able to send messages to the list
        administrator(s) of any list. Fixed.

    o NewList:
      Just minor changes.

    o ChooseUid:
      Declared keyid, uid_count and chosen_uid_number as local
        variables, moving them to the beginning of the function;
      Minor syntax changes in the checkings;
      Added lots of comments, explaining what the checkings and the
        expect script are doing.

  - Major changes on functions: GetGpgMessage, GetMessageHeaders,
    ListAdministration and "main"

    o GetGpgMessage:
      Improved function to run faster, specially when processing large
        messages (over 50KB or so).

    o GetMessageHeaders:
      Improved to run faster independent of the size of the message
        being processed.

    o ListAdministration:
      Structured function using the "case" bash builtin;
      Made command parsing more consistent: checking if a given
        command exists, if the right number of arguments were passed,
        if the arguments are valid for this command, and, if anything
        is wrong, showing descriptive and concise error messages;
      New administrative tasks can be easily added to this new nested
        "case" structure.

    o "main":
      Also structured using the "case" bash builtin;
      The long options --admin-task, --create-newlist, --help,
        --process-message and --version are now accepted;
      Commented out the -r (--list-request) option, since it's not
        implemented yet;
      Made the command-line options parsing more consistent (read
        explanation above);
      Changed "umask" from 0777 to 0077. Otherwise, function NewList
        cannot create configuration files for new lists;
      Improved parsing of option -a (--admin-task), removing
        unecessary commands and routines from this part of the code;
      Again, new command-line options can be easily added to this new
        nested "case" structure.

  [1] http://www.tldp.org/LDP/abs/html/unofficialst.html

10/08/2005 - 0.3-cvs (rev 1.29) - rhatto

  - Fix: Now LIST_MESSAGE _really_ works

09/08/2005 - 0.3-cvs (rev 1.28) - rhatto

  - Deleted var 'x'

07/08/2005 - 0.3-cvs (rev 1.19) - rhatto

  - Main function organization
  - umask 0777 to prevent any files got wrong permissions
  - Created USED_ARRAYS containing all the used array names
  - Small routine to unset all arrays

07/05/2005 - 0.3-cvs (rev 1.13) - rhatto

  - Firma now uses sendmail or any smtp wrapper directly:
    - Specify your smtp wrapper through MAIL var, eg:
      MAIL=/usr/sbin/sendmail
      MAIL=/usr/bin/ssmtp
    - Command-line arguments passed to the wrapper must
      be specified in var MAIL_ARGS
  - Change in functions get_message and get_gpg_message,
    introducing the variable LINES (total lines of the
    received message).
  - New array: LIST_MESSAGE: keeps the encrypted message
    sent to each subscriber; needed to the smtp wrapper
    and will help PGP/MIME handling.

05/08/2005 - 0.3-cvs (rev 1.6) - luis

  - New functions: list_admin, choose_uid and version.
  - Renamed functions
      GPGSTDERR -> get_gpg_stderr
      SUBSCRIBERS -> get_subscribers_list
      get_headers -> get_message_headers
  - New args:
    -h: chama a usage()
    -v: chama a version()
  - Option -a passes STDIN line by line to list_admin
  - Added some checkings in the main procedure
  - Some minor syntax changes

02/08/2005 - 0.3-cvs - rhatto

  - Completed function newlist (still needs tests)
  - New function: gpg_args

25/05/2005 - v0.2.x - rhatto

  - Message is now stored in two arrays, MESSAGE and GPG_MESSAGE.
    Temporary files are no longer needed. Deleted TMP var.
  - Adapted firma to work with these two arrays. Lots of changes along
    the code.
  - Reorganized the code again, splitting part of the process_message
    function into three new functions (get_message, get_gpg_message
    and get_headers).
  - new functions: get_message, get_gpg_message, get_headers,
  - added export LANG=en_US

14/05/2005 - v0.2.3 - rhatto

  - Changed project description.
  - Two new variables: VERSION and CONFIG. The later stores the path
    to the configuration file.
  - Reorganized the code, splitting it into two functions
    (check_config and process_message).
  - An exit code of 1 is now given if an error occurs.
  - Implemented a simple command line syntax: firma now has to be
    called along with an option (e.g., -p to process a message),
    followed by the path to the configuration file to be used.
  - Created a new function (usage), which displays firma's usage if
    its called without a command line option.
  - Rearranged some comments along the code.
  - New functions are: check_config, eval_config, usage, process_message and
    splited the code into these routines

12/05/2005 - v0.2.2 - luis

  major code cleanup and bug fix release

  - New: Implemented size and complexity checks for the lists' passphrase.
  - firma would not work as expected if the PASSWD variable contained
    characters such as $, `, ', ", \. Fixed. Now PASSWD has to be
    enclosed in single quotes and cannot contain any single quote in
    its value.
  - Checked the entire code and tried to make it clearer and more
    consistent. Lots of small changes and minor fixes.
  - BASH was looking for the configuration file first on its PATH and
    only then on the current directory. Disabled sourcepath to avoid
    this behavior.
  - A From header containing more than one "<" would turn the variable
    FROMADD useless. Fixed.
  - When a message's signature is found invalid, the notification
    about it is now sent separately for the sender and the list
    administrators.
  - Other minor fixes and improvements.
  - fix LISTNAME and LISTADMIN case sensitiveness

18/04/2005 - v0.2.1 - luis

  - Added some simple checks for the values entered in the
    configuration file. If any of these checks fail, firma exits and
    shows what should be corrected in the file.

  - GPGLIST now lists public keys using the gpg option
    "--with-colons". Definitely much easier to parse.

  - added --no-permission-warning on $GPGCOMMAND.

  - first tests with --hidden-recipient, but not added

  - Fixed the FROMADD variable. It wasn't working on the last version

    - FROMADD=$(echo $FROMADD \
        | if grep -q "<" ; \
          then echo $FROMADD | grep -o "<.*>" | sed -e "s/[<>]//g" ; \
          else echo $FROMADD ; \
          fi)

    + FROMADD=$(echo $FROM \
        | if grep -q "<" ; \
          then echo $FROM | grep -o "<.*>" | sed -e "s/[<>]//g" ; \
          else echo $FROM ; \
          fi)

  - created routines to check config file vars

  - changed SUBJECT to SUBJECT=$(grep -m 1 "^Subject:" $TMP | cut -d : -f 2- | sed "s/^ //")

  - changed FROM to FROM=$(grep -m 1 "^From:" $TMP | cut -f 2 -d :)

17/04/2005 - v0.2 - luis

  - Lists can now have a passphrase. Added option "--passphrase-fd 0"
    to the GPGDECRYPT and GPGENCRYPT variables.
  - Added a new variable to the configuration file: LISTADMIN. It
    should contain the email address of one or more list
    administrator(s).
  - Added signature checking for received messages. If the signature
    is found valid, the message is sent to the list. If its invalid,
    its returned to the sender and to the list administrator(s). If
    the message was not encrypted and/or signed, a note is returned
    to the sender.
  - Added a few options to the GPGCOMMAND variable: "--batch",
    "--no-tty", "--no-use-agent" and "--no-permission-warning".

    GPGCOMMAND="$GPG \
        --quiet \
        --homedir $GPGDIR \
        --batch \
        --no-tty \
        --no-use-agent"

  - Added two new functions: GPGSTDERR and SUBSCRIBERS. The first gets
    gpg STDERR and discards its STDOUT and the later returns the
    subscribers list.

    function GPGSTDERR {
       echo "$PASSWD" \
       | ($GPGDECRYPT --status-fd 2 $TMP.gpg 1> /dev/null) 2>&1 ;
    }

    function SUBSCRIBERS {
       $GPGLIST \
       | sed -n '/$LISTNAME/d;/pub/p' \
       | grep -o '<.*>' \
       | sed -e 's/[<>]//g' ;
    }

  - Added a new variable, FROMADD, which contains the sender's email
    address.

    FROMADD=$(echo $FROMADD \
       | if grep -q '<' ; \
       then echo $FROMADD | grep -o '<.*>' | sed -e 's/[<>]//g' ; \
       else echo $FROMADD ; \
       fi)

   TODO: find a better place to this var.

Feb 2005 - v0.1 - rhatto

  - First public release and proof of concept
  - Based on pgplist (http://www.rediris.es/app/pgplist/index.en.html),
    but completely written from scratch
  - Strips all mail headers
  - Use keyring as database
  - List variables are sourced from a configuration file.
  - List subscription is managed through gpg public keyrings, one
    keyring for each mailing list.
  - Message is read from STDIN, passed to it by postfix or some
    other MTA.
  - Encrypted message is saved in a temporary file on disk. The
    decrypted message though is not stored in disk, but passed to
    the MTA through a pipe.
  - Message is then decrypted, re-encrypted and sent separately to
    each list subscriber.