From e8c773aa03892bc905eefe8831c04b67c7978f6a Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Sun, 22 Dec 2013 12:11:54 -0200
Subject: Misc cleanup

---
 misc/poc/README      |   1 -
 misc/poc/firma-0.1   |  53 ----------
 misc/poc/firma-0.1.5 |  57 -----------
 misc/poc/firma-0.1.6 | 147 ---------------------------
 misc/poc/firma-0.2   | 108 --------------------
 misc/poc/firma-0.2.1 | 133 ------------------------
 misc/poc/firma-0.2.2 | 153 ----------------------------
 misc/poc/firma-0.2.3 | 192 -----------------------------------
 misc/poc/firma-0.2.4 | 211 --------------------------------------
 misc/poc/firma-0.2.x | 280 ---------------------------------------------------
 10 files changed, 1335 deletions(-)
 delete mode 100644 misc/poc/README
 delete mode 100755 misc/poc/firma-0.1
 delete mode 100755 misc/poc/firma-0.1.5
 delete mode 100755 misc/poc/firma-0.1.6
 delete mode 100755 misc/poc/firma-0.2
 delete mode 100755 misc/poc/firma-0.2.1
 delete mode 100755 misc/poc/firma-0.2.2
 delete mode 100755 misc/poc/firma-0.2.3
 delete mode 100755 misc/poc/firma-0.2.4
 delete mode 100755 misc/poc/firma-0.2.x

(limited to 'misc')

diff --git a/misc/poc/README b/misc/poc/README
deleted file mode 100644
index 693db64..0000000
--- a/misc/poc/README
+++ /dev/null
@@ -1 +0,0 @@
-Proof of concept and initial versions.
diff --git a/misc/poc/firma-0.1 b/misc/poc/firma-0.1
deleted file mode 100755
index eab39e6..0000000
--- a/misc/poc/firma-0.1
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/bin/bash
-#
-# firma v0.1: simple encrypted mailing list aliases
-# feedback: rhatto@riseup.net | GPL
-#
-# list configuration is passed thru the a config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-
-# eval the config file
-source $1
-
-GPGCOMMAND="$GPG -q --homedir $GPGDIR"
-GPGLIST="$GPGCOMMAND --list-keys" 
-GPGDECRYPT="$GPGCOMMAND --decrypt"
-GPGENCRYPT="$GPGCOMMAND --always-trust -e -s -a -r" 
-
-rm $TMP $TMP.gpg
-touch $TMP; chmod 600 $TMP;
-touch $TMP.gpg; chmod 600 $TMP.gpg;
-
-# todo: use an array
-while read STDIN; do
-  echo $STDIN >> $TMP
-done
-
-# get the headers
-FROM=$(grep -m 1 ^From: $TMP | cut -f 2 -d :)
-DATE=$(grep -m 1 ^Date: $TMP)
-SUBJECT=$(grep -m 1 ^Subject: $TMP)
-
-# detect the encrypted message
-sed -n '/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p' $TMP >> $TMP.gpg
-
-# encrypting and sending for each recipient on the list
-for EMAIL in $($GPGLIST | grep pub | cut -d "<" -f 2 | sed -e 's/>//' | grep @ | grep -v $LISTNAME); do 
-
-  echo "$PASSWD
-  Message from: $FROM
-  $SUBJECT
-  $DATE
-
-  $(echo "$PASSWD" | $GPGDECRYPT $TMP.gpg)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL 
-
-done
- 
-rm $TMP $TMP.gpg
diff --git a/misc/poc/firma-0.1.5 b/misc/poc/firma-0.1.5
deleted file mode 100755
index 029a09d..0000000
--- a/misc/poc/firma-0.1.5
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2: simple encrypted mailing list aliases
-# feedback: rhatto@riseup.net | GPL
-#
-# list configuration is passed through a config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-# FOOTER= message footer
-
-# eval the config file
-source $1
-
-GPGCOMMAND="$GPG -q --homedir $GPGDIR"
-GPGLIST="$GPGCOMMAND --list-keys" 
-GPGDECRYPT="$GPGCOMMAND --decrypt"
-GPGENCRYPT="$GPGCOMMAND --always-trust -e -s -a -r" 
-
-rm $TMP $TMP.gpg
-touch $TMP; chmod 600 $TMP;
-touch $TMP.gpg; chmod 600 $TMP.gpg;
-
-# todo: use an array
-while read STDIN; do
-  echo $STDIN >> $TMP
-done
-
-# get the headers
-FROM=$(grep -m 1 ^From: $TMP | cut -f 2 -d :)
-DATE=$(grep -m 1 ^Date: $TMP)
-SUBJECT=$(grep -m 1 ^Subject: $TMP)
-
-# detect the encrypted message
-sed -n '/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p' $TMP >> $TMP.gpg
-
-# encrypting and sending for each recipient on the list
-for EMAIL in $($GPGLIST | grep pub | cut -d "<" -f 2 | sed -e 's/>//' | grep @ | grep -v $LISTNAME); do 
-
-  echo "$PASSWD
-  Message from: $FROM
-  $SUBJECT
-  $DATE
-
-  $(echo "$PASSWD" | $GPGDECRYPT $TMP.gpg)
-
-  ---
-  $FOOTER " | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL 
-
-done
- 
-rm $TMP $TMP.gpg
diff --git a/misc/poc/firma-0.1.6 b/misc/poc/firma-0.1.6
deleted file mode 100755
index 239c9a5..0000000
--- a/misc/poc/firma-0.1.6
+++ /dev/null
@@ -1,147 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2: simple encrypted mailing list aliases
-# feedback: rhatto@riseup.net | GPL
-#
-# list configuration is passed through a config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-# FOOTER= message footer
-# ALLOWSENDKEY = set to 1 if you want people automatically receive the list
-#                key requesting through listname-request@example.tld
-#                with subject: key
-#
-# design / todo:
-#
-# - list-request:
-#     - key (allow send key)
-#     - help
-#     - subscribe: exchange pubkey
-#     - unsubscribe
-# - strings
-# - check signatures
-# - create list
-# - archive (optional)
-# - logfile (optional)
-# - gpg --no-tty --display-charset --utf8-strings ?
-#
-# sintax: firma -c || firma config-file
-#         -c: create a new list
-#         config-file: parse the email from stdin
-#         with the parameters specified in the
-#         config-file 
-#
-# fix:
-# 
-# - special chars
-# - id's recipient selection
-# 
-
-fuction _refresh_cache { 
-  rm $1 $1.gpg
-  touch $1; chmod 600 $1;
-  touch $1.gpg; chmod 600 $TMP.gpg;
-}
-
-function _process_message {
-  # get the headers
-  FROM=$(grep -m 1 ^From: $1 | cut -f 2 -d :)
-  DATE=$(grep -m 1 ^Date: $1)
-  SUBJECT=$(grep -m 1 ^Subject: $1)
-
-  # detect the encrypted message
-  sed -n '/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p' $1 >> $1.gpg
-
-  # encrypting and sending for each recipient on the list
-  for EMAIL in $($GPGLIST | grep pub | cut -d "<" -f 2 | sed -e 's/>//' | grep @ | grep -v $LISTNAME); do 
-
-    echo "$PASSWD
-    Message from: $FROM
-    $SUBJECT
-    $DATE
-
-    $(echo "$PASSWD" | $GPGDECRYPT $1.gpg)
-
-    ---
-    $FOOTER 
-    " | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL 
-  done
-}
-
-function _process_request {
-
-  # todo: support subjects like "key   ", etc
-  FROM=$(grep -m 1 ^From: $1 | cut -f 2 -d :)
-  REQUEST=$(grep -m 1 ^Subject: $1)
-  if [[ $REQUEST == "key" ]]; then
-    if [[ $ALLOWSENDKEY == 1 ]]; then  
-      # send key to From: recipient
-    else
-      # dont send the key; return error message
-    fi
-  else if [[ $REQUEST == "subscribe" ]]; then
-    # check if user put its pubkey and
-    # ask the list for subscribe From: recipient
-  else if [[ $REQUEST == "unsubscribe" ]]; then
-    # unsubscribe and advise the list
-  else
-    # error message
-  fi 
-
-}
-
-function _process {
-
-  # eval the config file
-  source $1
-
-  GPGCOMMAND="$GPG -q --homedir $GPGDIR"
-  GPGLIST="$GPGCOMMAND --list-keys" 
-  GPGDECRYPT="$GPGCOMMAND --decrypt"
-  GPGENCRYPT="$GPGCOMMAND --always-trust --hidden-recipient --textmode -e -s -a -r" 
-
-  # clear the cache before read the message
-  _refresh_cache $TMP
-
-  # todo: use an array
-  while read STDIN; do
-    echo $STDIN >> $TMP
-  done 
-
-  # check with action is requested depending on the To: field
-  TO=$(grep -m 1 ^To: $)
-  if [[ $TO == $LISTNAME ]]; then _process_message $TMP;
-  else _process_request $TMP;
-  fi
-
-  # clear after process
-  _refresh_cache $TMP
-
-}
-
-function newlist {
-
-  LISTHOME = 
-  LISTNANE = 
-  ...
-
-  $GPGCOMMAND --gen-key
-
-}
-
-# check sintax
-if [[ $1 = "-c" ]]; then
-  _newlist;
-else if [ -f $1 ];
-  then _process $1;
-else
-  echo sintax: $0 [-c] [config-file];
-fi
-
-rm $TMP $TMP.gpg
diff --git a/misc/poc/firma-0.2 b/misc/poc/firma-0.2
deleted file mode 100755
index 5cf85d2..0000000
--- a/misc/poc/firma-0.2
+++ /dev/null
@@ -1,108 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2: simple encrypted mailing list aliases
-# feedback: rhatto@riseup.net luis@riseup.net | GPL
-#
-# list configuration is passed thru the config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# LISTADMIN= list administrator email addresses (space separated)
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-
-# eval the config file
-source $1
-
-# declare GPG variables
-GPGCOMMAND="$GPG --quiet --homedir $GPGDIR --batch --no-tty --no-use-agent --no-permission-warning"
-GPGLIST="$GPGCOMMAND --list-keys"
-GPGDECRYPT="$GPGCOMMAND --passphrase-fd 0 --decrypt"
-GPGENCRYPT="$GPGCOMMAND --passphrase-fd 0 --always-trust --encrypt --sign --armor --recipient"
-
-# declare functions
-# discard $GPGDECRYPT STDOUT and get its STDERR instead, for signature checking
-function GPGSTDERR {
-  echo "$PASSWD" | ($GPGDECRYPT --status-fd 2 $TMP.gpg 1> /dev/null) 2>&1 ;
-}
-
-# get list susbscriber addresses
-function SUBSCRIBERS {
-  $GPGLIST | sed -n "/$LISTNAME/d;/pub/p" | grep -o '<.*>' | sed -e 's/[<>]//g' ;
-}
-
-# create the temporary files and restrict their permissions
-rm -f $TMP $TMP.gpg
-touch $TMP; chmod 600 $TMP;
-touch $TMP.gpg; chmod 600 $TMP.gpg;
-
-# todo: use an array
-while read STDIN; do
-  echo $STDIN >> $TMP
-done
-
-# get the message headers
-# todo: find a better place for $FROMADD since its not part of the message headers
-FROM=$(grep -m 1 ^From: $TMP | cut -f 2 -d :)
-FROMADD=$(echo $FROMADD | if grep -q '<' ; then echo $FROMADD | grep -o '<.*>' | sed -e 's/[<>]//g' ; else echo $FROMADD ; fi)
-DATE=$(grep -m 1 ^Date: $TMP)
-SUBJECT=$(grep -m 1 ^Subject: $TMP | cut -f 2 -d :)
-
-# get the encrypted message
-sed -n '/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p' $TMP >> $TMP.gpg
-
-# if signature is OK, encrypt and send it for each list subscriber
-# todo: declare a function to decrypt, re-encrypt and send the list messages
-if (GPGSTDERR | grep -q 'GOODSIG') ; then
-
-  for EMAIL in $(SUBSCRIBERS); do 
-
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: $SUBJECT
-    $DATE
-
-    $(GPGSTDERR | grep 'gpg: Signature made')
-    $(GPGSTDERR | grep 'gpg: Good signature from')
-
-$(echo "$PASSWD" | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-
-  done
-
-# else, if signature is BAD, email it back to sender and to list admins
-elif (GPGSTDERR | grep -q 'BADSIG') ; then
-
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: [BAD SIGNATURE] $SUBJECT
-    $DATE
-
-    $(GPGSTDERR | grep 'gpg: Signature made')
-    $(GPGSTDERR | grep 'gpg: BAD signature from')
-
-$(echo "$PASSWD" | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $LISTADMIN $FROMADD | $MAIL -r $LISTNAME $LISTADMIN $FROMADD
-
-# else, probably either the message was not signed or the sender is not subscribed to the list
-# email the message back to sender including a note about this
-# todo: parse STDERR to find out why the signature couldn't be checked and send more specific errors back to sender
-else
-
-    echo "
-    Message from: $FROM
-    Subject: [RETURNED MAIL] $SUBJECT
-    $DATE
-
-    [ It was not possible to process this message. Either or both
-      the message was not encrypted and/or signed, or you are not
-      subscribed to this list.  Contact the list administrator if
-      you have any questions. ]
-
-    -- 
-    firma v0.2" | $MAIL -r $LISTNAME $FROMADD
-
-fi
- 
-rm -f $TMP $TMP.gpg
diff --git a/misc/poc/firma-0.2.1 b/misc/poc/firma-0.2.1
deleted file mode 100755
index 13ee6da..0000000
--- a/misc/poc/firma-0.2.1
+++ /dev/null
@@ -1,133 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2.1: simple encrypted mailing list aliases
-# feedback: rhatto@riseup.net luis@riseup.net | GPL
-#
-# list configuration is passed thru the config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# LISTADMIN= list administrator email addresses (space separated)
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-
-# eval the config file
-source $1
-
-# declare GPG variables
-GPGCOMMAND="$GPG --quiet --homedir $GPGDIR --batch --no-tty --no-use-agent --no-permission-warning"
-GPGLIST="$GPGCOMMAND --list-keys --with-colons"
-GPGDECRYPT="$GPGCOMMAND --passphrase-fd 0 --decrypt"
-GPGENCRYPT="$GPGCOMMAND --passphrase-fd 0 --always-trust --encrypt --sign --armor --hidden-recipient"
-
-# check configuration file parameters
-# todo: check if $TMP directory/files exist and if password is at least n characters long
-if [ ! -x $GPG -o ! -f $GPG ]; then
-  echo -e "\n$1: GPG binary ($GPG) could not be found.\n"
-  exit
-elif [ ! -x $MAIL -o ! -f $MAIL ]; then
-  echo -e "\n$1: Mail program ($MAIL) could not be found.\n"
-  exit
-elif [ ! -d $GPGDIR -o ! -f $GPGDIR/pubring.gpg -o ! -f $GPGDIR/secring.gpg ]; then
-  echo -e "\n$1: GPG home directory ($GPGDIR) or the GPG keyrings could not be found.\n"
-  exit
-elif [ -z $($GPGLIST | grep -o "<$LISTNAME>") ]; then
-  echo -e "\n$1: GPG key for list \"$LISTNAME\" could not be found."
-  echo -e "$1: Note that this parameter expects an email address.\n"
-  exit
-else
-  for ADMIN in $LISTADMIN; do {
-    if [ -z $($GPGLIST | grep -o "<$ADMIN>") ]; then
-      echo -e "\n$1: GPG key for list administrator \"$ADMIN\" could not be found."
-      echo -e "$1: Note that this parameter expects one or more email addresses.\n"
-      exit
-    fi; }
-  done
-fi
-
-# declare functions
-# discard $GPGDECRYPT STDOUT and get its STDERR instead, for signature checking
-function GPGSTDERR {
-  echo "$PASSWD" | ($GPGDECRYPT --status-fd 2 $TMP.gpg 1> /dev/null) 2>&1 ;
-}
-
-# get list susbscriber addresses
-function SUBSCRIBERS {
-  $GPGLIST | sed -n "/$LISTNAME/d;/pub/p" | grep -o "<.*>" | sed -e "s/[<>]//g" ;
-}
-
-# create the temporary files and restrict their permissions
-rm -f $TMP $TMP.gpg
-touch $TMP; chmod 600 $TMP;
-touch $TMP.gpg; chmod 600 $TMP.gpg;
-
-# todo: use an array
-while read STDIN; do
-  echo $STDIN >> $TMP
-done
-
-# get the message headers
-# todo: find a better place for $FROMADD since its not part of the message headers
-FROM=$(grep -m 1 "^From:" $TMP | cut -d : -f 2- | sed "s/^ //")
-FROMADD=$(echo $FROM | if grep -q "<" ; then echo $FROM | grep -o "<.*>" | sed -e "s/[<>]//g" ; else echo $FROM ; fi)
-DATE=$(grep -m 1 "^Date:" $TMP)
-SUBJECT=$(grep -m 1 "^Subject:" $TMP | cut -d : -f 2- | sed "s/^ //")
-
-# get the encrypted message
-sed -n "/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p" $TMP >> $TMP.gpg
-
-# if signature is Good, encrypt and send it for each list subscriber
-# todo: declare a function to decrypt, re-encrypt and send the list messages
-if (GPGSTDERR | grep -q "GOODSIG") ; then
-
-  for EMAIL in $(SUBSCRIBERS); do 
-
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: $SUBJECT
-    $DATE
-
-    $(GPGSTDERR | grep "gpg: Signature made")
-    $(GPGSTDERR | grep "gpg: Good signature from")
-
-$(echo "$PASSWD" | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e "s/=20$//" | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-
-  done
-
-# else, if signature is BAD, email it back to sender and to list admins
-elif (GPGSTDERR | grep -q "BADSIG") ; then
-
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: [BAD SIGNATURE] $SUBJECT
-    $DATE
-
-    $(GPGSTDERR | grep "gpg: Signature made")
-    $(GPGSTDERR | grep "gpg: BAD signature from")
-
-$(echo "$PASSWD" | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e "s/=20$//" | $GPGENCRYPT $LISTADMIN $FROMADD | $MAIL -r $LISTNAME $LISTADMIN $FROMADD
-
-# else, probably either the message was not signed or the sender is not subscribed to the list
-# email the message back to sender including a note about this
-# todo: parse STDERR to find out why the signature couldn't be checked and send more specific errors back to sender
-else
-
-    echo "
-    Message from: $FROM
-    Subject: [RETURNED MAIL] $SUBJECT
-    $DATE
-
-    [ It was not possible to process this message. Either or both
-      the message was not encrypted and/or signed, or you are not
-      subscribed to this list.  Contact the list administrator if
-      you have any questions. ]
-
-    -- 
-    firma v0.2.1" | $MAIL -r $LISTNAME $FROMADD
-
-fi
- 
-rm -f $TMP $TMP.gpg
diff --git a/misc/poc/firma-0.2.2 b/misc/poc/firma-0.2.2
deleted file mode 100755
index f1a8f27..0000000
--- a/misc/poc/firma-0.2.2
+++ /dev/null
@@ -1,153 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2.2: simple encrypted mailing list aliases
-# feedback: rhatto@riseup.net luis@riseup.net | GPL
-#
-# list configuration is passed thru the config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# LISTADMIN= list administrator email addresses (space separated)
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-
-# if the configuration file exists, disable "sourcepath" and evaluate the parameters
-if [ -f $1 ]; then
-  shopt -u sourcepath && source $1
-else
-  echo -e "\nConfiguration file \"$1\" could not be found.\n"
-  exit
-fi
-
-# declare GPG variables
-GPGCOMMAND="$GPG --quiet --homedir $GPGDIR --batch --no-tty --no-use-agent --no-permission-warning"
-GPGLIST="$GPGCOMMAND --list-keys --with-colons"
-GPGDECRYPT="$GPGCOMMAND --passphrase-fd 0 --decrypt"
-GPGENCRYPT="$GPGCOMMAND --passphrase-fd 0 --always-trust --encrypt --sign --armor --recipient"
-
-# check configuration file parameters
-# todo: check if $TMP directory/files exist
-if [ ! -f $GPG -o ! -x $GPG ]; then
-  echo -e "\n$1: GPG binary ($GPG) could not be found.\n"
-  exit
-elif [ ! -f $MAIL -o ! -x $MAIL ]; then
-  echo -e "\n$1: Mail program ($MAIL) could not be found.\n"
-  exit
-elif [ ! -d $GPGDIR -o ! -f $GPGDIR/pubring.gpg -o ! -f $GPGDIR/secring.gpg ]; then
-  echo -e "\n$1: GPG home directory ($GPGDIR) or the GPG keyrings could not be found.\n"
-  exit
-elif [ -z "$(cat $1 | grep -o ^PASSWD=\'[^\']*\'$)" -o \
-       -z "$(echo -n $PASSWD)" -o \
-       "$(echo -n $PASSWD | wc -m)" -lt "25" -o \
-       -z "$(echo -n $PASSWD | grep -o [[:lower:][:upper:]])" -o \
-       -z "$(echo -n $PASSWD | grep -o [[:digit:]])" -o \
-       "$(echo -n $PASSWD | grep -o [[:punct:]] | wc -l)" -lt "5" ]; then
-  echo -e "\n$1: PASSWD is empty or does not meet the minimum complexity requirements."
-  echo "$1: Please set a new passphrase for the list's private key. Make it at least"
-  echo "$1: 25 characters long (using a combination of letters, numbers and at least"
-  echo "$1: 5 special characters) and enclose it in 'single quotes'. The passphrase"
-  echo -e "$1: itself, though, cannot contain any single quote.\n"
-  exit
-elif [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$LISTNAME\>$)" ]; then
-  echo -e "\n$1: GPG key for list \"$LISTNAME\" could not be found."
-  echo -e "$1: Note that this parameter expects an email address.\n"
-  exit
-else
-  for ADMIN in $LISTADMIN; do {
-    if [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$ADMIN\>$)" ]; then
-      echo -e "\n$1: GPG key for list administrator \"$ADMIN\" could not be found."
-      echo -e "$1: Note that this parameter expects one or more space separated email addresses.\n"
-      exit
-    fi; }
-  done
-fi
-
-# declare functions
-# discard $GPGDECRYPT STDOUT and get its STDERR instead, for signature checking
-function GPGSTDERR {
-  echo $PASSWD | ($GPGDECRYPT --status-fd 2 $TMP.gpg 1> /dev/null) 2>&1 ;
-}
-
-# get list susbscriber addresses
-function SUBSCRIBERS {
-  $GPGLIST | sed -ne "/$LISTNAME/Id" -e '/pub/p' | cut -d : -f 10 | grep -o '<[^<>]*>$' | sed -e 's/[<>]//g' ;
-}
-
-# create the temporary files and restrict their permissions
-rm -f $TMP $TMP.gpg
-touch $TMP && chmod 600 $TMP
-touch $TMP.gpg && chmod 600 $TMP.gpg
-
-# todo: use an array
-while read STDIN; do
-  echo $STDIN >> $TMP
-done
-
-# get the message headers and the sender's email address
-FROM=$(grep -m 1 ^From: $TMP | cut -d : -f 2- | sed -e 's/^ //')
-FROMADD=$(if [ -z "$(echo $FROM | grep '>$')" ] ; then echo $FROM ; else echo $FROM | grep -o '<[^<>]*>$' | sed -e 's/[<>]//g' ; fi)
-DATE=$(grep -m 1 ^Date: $TMP)
-SUBJECT=$(grep -m 1 ^Subject: $TMP | cut -d : -f 2- | sed -e 's/^ //')
-
-# get the encrypted message
-sed -ne '/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p' $TMP >> $TMP.gpg
-
-# if signature is Good, encrypt and send it for each list subscriber
-# todo: declare a function to decrypt, re-encrypt and send the list messages
-if (GPGSTDERR | grep -Fq GOODSIG) ; then
-
-  for EMAIL in $(SUBSCRIBERS); do 
-
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: $SUBJECT
-    $DATE
-
-    $(GPGSTDERR | grep -F 'gpg: Signature made')
-    $(GPGSTDERR | grep -F 'gpg: Good signature from')
-
-$(echo $PASSWD | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-
-  done
-
-# else, if signature is BAD, email it back to the list admins and to sender
-elif (GPGSTDERR | grep -Fq BADSIG) ; then
-
-  for EMAIL in $(echo $LISTADMIN $FROMADD); do
-
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: [BAD SIGNATURE] $SUBJECT
-    $DATE
-
-    $(GPGSTDERR | grep -F 'gpg: Signature made')
-    $(GPGSTDERR | grep -F 'gpg: BAD signature from')
-
-$(echo $PASSWD | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-
-  done
-
-# else, probably either the message was not signed or the sender is not subscribed to the list
-# email the message back to sender including a note about this
-# todo: parse STDERR to find out why the signature couldn't be checked and send more specific errors back to sender
-else
-
-    echo "
-    Message from: $FROM
-    Subject: [RETURNED MAIL] $SUBJECT
-    $DATE
-
-    [ It was not possible to process this message. Either or both
-      the message was not encrypted and/or signed, or you are not
-      subscribed to this list.  Contact the list administrator if
-      you have any questions. ]
-
-    -- 
-    firma v0.2.2" | $MAIL -r $LISTNAME $FROMADD
-
-fi
- 
-rm -f $TMP $TMP.gpg
diff --git a/misc/poc/firma-0.2.3 b/misc/poc/firma-0.2.3
deleted file mode 100755
index 2864115..0000000
--- a/misc/poc/firma-0.2.3
+++ /dev/null
@@ -1,192 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2.3: encrypted mailing list manager
-# feedback: rhatto@riseup.net luis@riseup.net | GPL
-#
-# list configuration is passed thru the config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# TMP= where you want the temp files
-# LISTNAME= list email
-# LISTADMIN= list administrator email addresses (space separated)
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-#
-
-VERSION=0.2.3
-
-function usage {
-  echo usage: $0 firma \<option\> \<config-file\>
-  echo -c: create a new list using config-file
-  echo -p: process a message 
-  echo -a: admin commands
-}
-
-function check_config {
-  # check configuration file parameters
-  # todo: check if $TMP directory/files exist
-  if [ ! -f $GPG -o ! -x $GPG ]; then
-    echo -e "\n$1: GPG binary ($GPG) could not be found.\n"
-    exit 1
-  elif [ ! -f $MAIL -o ! -x $MAIL ]; then
-    echo -e "\n$1: Mail program ($MAIL) could not be found.\n"
-    exit 1
-  elif [ ! -d $GPGDIR -o ! -f $GPGDIR/pubring.gpg -o ! -f $GPGDIR/secring.gpg ]; then
-    echo -e "\n$1: GPG home directory ($GPGDIR) or the GPG keyrings could not be found.\n"
-      exit 1
-  elif [ -z "$(cat $CONFIG | grep -o ^PASSWD=\'[^\']*\'$)" -o \
-         -z "$(echo -n $PASSWD)" -o \
-         "$(echo -n $PASSWD | wc -m)" -lt "25" -o \
-         -z "$(echo -n $PASSWD | grep -o [[:lower:][:upper:]])" -o \
-         -z "$(echo -n $PASSWD | grep -o [[:digit:]])" -o \
-         "$(echo -n $PASSWD | grep -o [[:punct:]] | wc -l)" -lt "5" ]; then
-    echo -e "\n$CONFIG: PASSWD is empty or does not meet the minimum complexity requirements."
-    echo "$1: Please set a new passphrase for the list's private key. Make it at least"
-    echo "$1: 25 characters long (using a combination of letters, numbers and at least"
-    echo "$1: 5 special characters) and enclose it in 'single quotes'. The passphrase"
-    echo -e "$CONFIG: itself, though, cannot contain any single quote.\n"
-    exit 1
-  elif [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$LISTNAME\>$)" ]; then
-    echo -e "\n$CONFIG: GPG key for list \"$LISTNAME\" could not be found."
-    echo -e "$CONFIG: Note that this parameter expects an email address.\n"
-    exit 1
-  else
-    for ADMIN in $LISTADMIN; do {
-      if [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$ADMIN\>$)" ]; then
-        echo -e "\n$CONFIG: GPG key for list administrator \"$ADMIN\" could not be found."
-        echo -e "$CONFIG: Note that this parameter expects one or more space separated email addresses.\n"
-        exit 1
-      fi; }
-    done
-  fi
-}
-
-function GPGSTDERR {
-  # discard $GPGDECRYPT STDOUT and get its STDERR instead, for signature checking
-  echo $PASSWD | ($GPGDECRYPT --status-fd 2 $TMP.gpg 1> /dev/null) 2>&1 ;
-}
-
-function SUBSCRIBERS {
-  # get list susbscriber's addresses
-  $GPGLIST | sed -ne "/$LISTNAME/Id" -e '/pub/p' | cut -d : -f 10 | grep -o '<[^<>]*>$' | sed -e 's/[<>]//g' ;
-}
-
-function process_message {
-  # process a message sent to the list
-
-  # create the temporary files and restrict their permissions
-  rm -f $TMP $TMP.gpg
-  touch $TMP && chmod 600 $TMP
-  touch $TMP.gpg && chmod 600 $TMP.gpg
-  
-  # todo: use an array
-  while read STDIN; do
-    echo $STDIN >> $TMP
-  done
-  
-  # get the message headers and the sender's email address
-  FROM=$(grep -m 1 ^From: $TMP | cut -d : -f 2- | sed -e 's/^ //')
-  FROMADD=$(if [ -z "$(echo $FROM | grep '>$')" ] ; then echo $FROM ; else echo $FROM | grep -o '<[^<>]*>$' | sed -e 's/[<>]//g' ; fi)
-  DATE=$(grep -m 1 ^Date: $TMP)
-  SUBJECT=$(grep -m 1 ^Subject: $TMP | cut -d : -f 2- | sed -e 's/^ //')
-  
-  # get the encrypted message
-  sed -ne '/-----BEGIN PGP MESSAGE-----/,/-----END PGP MESSAGE-----/p' $TMP >> $TMP.gpg
-  
-  # if signature is Good, encrypt and send it for each list subscriber
-  # todo: declare a function to decrypt, re-encrypt and send the list messages
-  if (GPGSTDERR | grep -Fq GOODSIG) ; then
-  
-    for EMAIL in $(SUBSCRIBERS); do 
-  
-      echo "$PASSWD
-    Message from: $FROM
-    Subject: $SUBJECT
-    $DATE
-  
-    $(GPGSTDERR | grep -F 'gpg: Signature made')
-    $(GPGSTDERR | grep -F 'gpg: Good signature from')
-  
-  $(echo $PASSWD | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-  
-    done
-  
-  # else, if signature is BAD, email it back to the list admins and to sender
-  elif (GPGSTDERR | grep -Fq BADSIG) ; then
-  
-    for EMAIL in $(echo $LISTADMIN $FROMADD); do
-  
-      echo "$PASSWD
-    Message from: $FROM
-    Subject: [BAD SIGNATURE] $SUBJECT
-    $DATE
-  
-    $(GPGSTDERR | grep -F 'gpg: Signature made')
-    $(GPGSTDERR | grep -F 'gpg: BAD signature from')
-  
-  $(echo $PASSWD | $GPGDECRYPT $TMP.gpg 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-  
-    done
-  
-  # else, probably either the message was not signed or the sender is not subscribed to the list
-  # email the message back to sender including a note about this
-  # todo: parse STDERR to find out why the signature couldn't be checked and send more specific errors back to sender
-  else
-  
-      echo "
-    Message from: $FROM
-    Subject: [RETURNED MAIL] $SUBJECT
-    $DATE
-  
-    [ It was not possible to process this message. Either or both
-      the message was not encrypted and/or signed, or you are not
-      subscribed to this list.  Contact the list administrator if
-      you have any questions. ]
- 
-    -- 
-    firma v$VERSION" | $MAIL -r $LISTNAME $FROMADD
-  
-  fi
-   
-  rm -f $TMP $TMP.gpg
-  
-}
-
-# main -
-# command line checking
-if [ -z $2 ]; then
-  usage; exit 1
-else
-  CONFIG=$2
-fi
-
-# if the configuration file exists, disable "sourcepath" and evaluate the parameters
-if [ -f $CONFIG ] && [[ $1 != "-c" ]]; then
-  shopt -u sourcepath && source $CONFIG
-else
-  echo -e "\nConfiguration file \"$CONFIG\" could not be found.\n"
-  exit 1
-fi
-
-# declare GPG variables
-GPGCOMMAND="$GPG --quiet --homedir $GPGDIR --batch --no-tty --no-use-agent --no-permission-warning"
-GPGLIST="$GPGCOMMAND --list-keys --with-colons"
-GPGDECRYPT="$GPGCOMMAND --passphrase-fd 0 --decrypt"
-GPGENCRYPT="$GPGCOMMAND --passphrase-fd 0 --always-trust --encrypt --sign --armor --recipient"
-
-# then check the config
-check_config
-
-# command line parsing
-if [[ $1 == "-c" ]]; then
-  newlist 
-elif [[ $1 == "-p" ]]; then
-  process_message
-elif [[ $1 == "-a" ]]; then
-  admin_task
-else
-  usage; exit 1
-fi 
- 
diff --git a/misc/poc/firma-0.2.4 b/misc/poc/firma-0.2.4
deleted file mode 100755
index 6418782..0000000
--- a/misc/poc/firma-0.2.4
+++ /dev/null
@@ -1,211 +0,0 @@
-#!/bin/bash
-#
-# firma v0.2.4: encrypted mailing list manager
-# feedback: rhatto@riseup.net luis@riseup.net | GPL
-#
-# list configuration is passed thru the config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# LISTNAME= list email
-# LISTADMIN= list administrator email addresses (space separated)
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-#
-
-VERSION=0.2.4
-
-function usage {
-  echo usage: $0 firma \<option\> \<config-file\>
-  echo -c: create a new list using config-file
-  echo -p: process a message 
-  echo -a: admin commands
-}
-
-function check_config {
-  # check configuration file parameters
-  if [ ! -f $GPG -o ! -x $GPG ]; then
-    echo -e "\n$1: GPG binary ($GPG) could not be found.\n"
-    exit 1
-  elif [ ! -f $MAIL -o ! -x $MAIL ]; then
-    echo -e "\n$1: Mail program ($MAIL) could not be found.\n"
-    exit 1
-  elif [ ! -d $GPGDIR -o ! -f $GPGDIR/pubring.gpg -o ! -f $GPGDIR/secring.gpg ]; then
-    echo -e "\n$1: GPG home directory ($GPGDIR) or the GPG keyrings could not be found.\n"
-      exit 1
-  elif [ -z "$(cat $CONFIG | grep -o ^PASSWD=\'[^\']*\'$)" -o \
-         -z "$(echo -n $PASSWD)" -o \
-         "$(echo -n $PASSWD | wc -m)" -lt "25" -o \
-         -z "$(echo -n $PASSWD | grep -o [[:lower:][:upper:]])" -o \
-         -z "$(echo -n $PASSWD | grep -o [[:digit:]])" -o \
-         "$(echo -n $PASSWD | grep -o [[:punct:]] | wc -l)" -lt "5" ]; then
-    echo -e "\n$CONFIG: PASSWD is empty or does not meet the minimum complexity requirements."
-    echo "$1: Please set a new passphrase for the list's private key. Make it at least"
-    echo "$1: 25 characters long (using a combination of letters, numbers and at least"
-    echo "$1: 5 special characters) and enclose it in 'single quotes'. The passphrase"
-    echo -e "$CONFIG: itself, though, cannot contain any single quote.\n"
-    exit 1
-  elif [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$LISTNAME\>$)" ]; then
-    echo -e "\n$CONFIG: GPG key for list \"$LISTNAME\" could not be found."
-    echo -e "$CONFIG: Note that this parameter expects an email address.\n"
-    exit 1
-  else
-    for ADMIN in $LISTADMIN; do {
-      if [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$ADMIN\>$)" ]; then
-        echo -e "\n$CONFIG: GPG key for list administrator \"$ADMIN\" could not be found."
-        echo -e "$CONFIG: Note that this parameter expects one or more space separated email addresses.\n"
-        exit 1
-      fi; }
-    done
-  fi
-}
-
-function GPGSTDERR {
-  # discard $GPGDECRYPT STDOUT and get its STDERR instead, for signature checking
-  echo -e "$PASSWD\n${GPG_MESSAGE[@]}" | sed -e 's/^ //' | ($GPGDECRYPT --status-fd 2 1> /dev/null) 2>&1 ;
-}
-
-function SUBSCRIBERS {
-  # get list susbscriber's addresses
-  $GPGLIST | sed -ne "/$LISTNAME/Id" -e '/pub/p' | cut -d : -f 10 | grep -o '<[^<>]*>$' | sed -e 's/[<>]//g' ;
-}
-
-function get_message {
-  n=0;
-  while read STDIN; do
-    MESSAGE[$n]="$STDIN\n"
-    ((++n))
-  done
-}
-
-function get_gpg_message {
-  signal=0; x=0;
-  for ((count=0;count<=n;count++)); do
-    if [[ $signal == "0" ]] && [[ "$(echo "${MESSAGE[$count]}" | grep -v -e "-----BEGIN PGP MESSAGE-----")" == "" ]]; then
-      GPG_MESSAGE[$x]=${MESSAGE[$count]}; ((++x))
-      signal=1
-    elif [[ $signal == "1" ]]; then
-      GPG_MESSAGE[$x]=${MESSAGE[$count]}
-      ((++x))
-      if [[ "$(echo "${MESSAGE[$count]}" | grep -v -e "-----END PGP MESSAGE-----")" == "" ]]; then
-        signal=0
-      fi
-    fi
-  done
-}
-
-function get_headers {
-  # get the message headers and the sender's email address
-  FROM=$(echo -e "${MESSAGE[@]}" | grep -m 1 "From:" | cut -d : -f 2- | sed -e 's/^ //')
-  FROMADD=$(if [ -z "$(echo $FROM | grep '>$')" ] ; then echo $FROM ; else echo $FROM | grep -o '<[^<>]*>$' | sed -e 's/[<>]//
-g' ; fi)
-  DATE=$(echo -e "${MESSAGE[@]}" | grep -m 1 "Date:")
-  SUBJECT=$(echo -e "${MESSAGE[@]}" | grep -m 1 "Subject:" | cut -d : -f 2- | sed -e 's/^ //')
-}
-
-function process_message {
-  # process a message sent to the list
-
-  get_message
-  get_headers 
-  get_gpg_message
-
-  # if signature is Good, encrypt and send it for each list subscriber
-  # todo: declare a function to decrypt, re-encrypt and send the list messages
-  if (GPGSTDERR | grep -Fq GOODSIG) ; then
-  
-    for EMAIL in $(SUBSCRIBERS); do 
-  
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: $SUBJECT
-    $DATE
-  
-    $(GPGSTDERR | grep -F 'gpg: Signature made')
-    $(GPGSTDERR | grep -F 'gpg: Good signature from')
-  
-  $(echo -e "$PASSWD\n${GPG_MESSAGE[@]}" | $GPGDECRYPT 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-  
-    done
-  
-  # else, if signature is BAD, email it back to the list admins and to sender
-  elif (GPGSTDERR | grep -Fq BADSIG) ; then
-  
-    for EMAIL in $(echo $LISTADMIN $FROMADD); do
-  
-    echo "$PASSWD
-    Message from: $FROM
-    Subject: [BAD SIGNATURE] $SUBJECT
-    $DATE
-  
-    $(GPGSTDERR | grep -F 'gpg: Signature made')
-    $(GPGSTDERR | grep -F 'gpg: BAD signature from')
-  
-  $(echo -e "$PASSWD\n${GPG_MESSAGE[@]}" | $GPGDECRYPT 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $EMAIL | $MAIL -r $LISTNAME $EMAIL
-  
-    done
-  
-  # else, probably either the message was not signed or the sender is not subscribed to the list
-  # email the message back to sender including a note about this
-  # todo: parse STDERR to find out why the signature couldn't be checked and send more specific errors back to sender
-  else
-  
-    echo "
-    Message from: $FROM
-    Subject: [RETURNED MAIL] $SUBJECT
-    $DATE
-  
-    [ It was not possible to process this message. Either or both
-      the message was not encrypted and/or signed, or you are not
-      subscribed to this list.  Contact the list administrator if
-      you have any questions. ]
- 
-    -- 
-    firma v$VERSION" | $MAIL -r $LISTNAME $FROMADD
-  
-  fi
-   
-}
-
-# main -
-# command line checking
-if [ -z $2 ]; then
-  usage; exit 1
-else
-  CONFIG=$2
-fi
-
-# if the configuration file exists, disable "sourcepath" and evaluate the parameters
-if [ -f $CONFIG ] && [[ $1 != "-c" ]]; then
-  shopt -u sourcepath && source $CONFIG
-else
-  echo -e "\nConfiguration file \"$CONFIG\" could not be found.\n"
-  exit 1
-fi
-
-declare -a MESSAGE
-declare -a GPG_MESSAGE
-declare n
-export LANG=en_US
-
-# declare GPG variables
-GPGCOMMAND="$GPG --quiet --homedir $GPGDIR --batch --no-tty --no-use-agent --no-permission-warning"
-GPGLIST="$GPGCOMMAND --list-keys --with-colons"
-GPGDECRYPT="$GPGCOMMAND --passphrase-fd 0 --decrypt"
-GPGENCRYPT="$GPGCOMMAND --passphrase-fd 0 --always-trust --encrypt --sign --armor --recipient"
-
-# then check the config
-check_config
-
-# command line parsing
-if [[ $1 == "-c" ]]; then
-  newlist 
-elif [[ $1 == "-p" ]]; then
-  process_message
-elif [[ $1 == "-a" ]]; then
-  admin_task
-else
-  usage; exit 1
-fi 
- 
diff --git a/misc/poc/firma-0.2.x b/misc/poc/firma-0.2.x
deleted file mode 100755
index 126f998..0000000
--- a/misc/poc/firma-0.2.x
+++ /dev/null
@@ -1,280 +0,0 @@
-#!/bin/bash
-#
-# firma v0.3: encrypted mailing list manager
-# feedback: rhatto@riseup.net luis@riseup.net | GPL
-#
-# list configuration is passed thru the config file,
-# where you put PARAMETER=value (whithout spaces)
-#
-# MAIL= path for mail program
-# GPG= path for gnupg binary
-# LISTNAME= list email
-# LISTADMIN= list administrator email addresses (space separated)
-# GPGDIR= gpg dir for the lists' keyring
-# PASSWD= passwd for the lists' keyring
-#
-
-FIRMA_LIST_PATH=/usr/local/etc/lists
-VERSION=0.3
-
-# todo:
-# errase all vars before quit the game
-# unset MESSAGE
-# unset GPG_MESSAGE
-# umask ....
-
-function usage {
-  echo usage: $0 firma \<option\> \<config-file\>
-  echo -c: create a new list using config-file
-  echo -p: process a message 
-  echo -r: admin and user requests (mail only)
-  echo -a: admin commands
-}
-
-function check_config {
-  # check configuration file parameters
-  if [ ! -f $GPG -o ! -x $GPG ]; then
-    echo -e "\n$1: GPG binary ($GPG) could not be found.\n"
-    exit 1
-  elif [ ! -f $MAIL -o ! -x $MAIL ]; then
-    echo -e "\n$1: Mail program ($MAIL) could not be found.\n"
-    exit 1
-  elif [ ! -d $GPGDIR -o ! -f $GPGDIR/pubring.gpg -o ! -f $GPGDIR/secring.gpg ]; then
-    echo -e "\n$1: GPG home directory ($GPGDIR) or the GPG keyrings could not be found.\n"
-      exit 1
-  elif [ -z "$(cat $CONFIG | grep -o ^PASSWD=\'[^\']*\'$)" -o \
-         -z "$(echo -n $PASSWD)" -o \
-         "$(echo -n $PASSWD | wc -m)" -lt "25" -o \
-         -z "$(echo -n $PASSWD | grep -o [[:lower:][:upper:]])" -o \
-         -z "$(echo -n $PASSWD | grep -o [[:digit:]])" -o \
-         "$(echo -n $PASSWD | grep -o [[:punct:]] | wc -l)" -lt "5" ]; then
-    echo -e "\n$CONFIG: PASSWD is empty or does not meet the minimum complexity requirements."
-    echo "$1: Please set a new passphrase for the list's private key. Make it at least"
-    echo "$1: 25 characters long (using a combination of letters, numbers and at least"
-    echo "$1: 5 special characters) and enclose it in 'single quotes'. The passphrase"
-    echo -e "$CONFIG: itself, though, cannot contain any single quote.\n"
-    exit 1
-  elif [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$LISTNAME\>$)" ]; then
-    echo -e "\n$CONFIG: GPG key for list \"$LISTNAME\" could not be found."
-    echo -e "$CONFIG: Note that this parameter expects an email address.\n"
-    exit 1
-  else
-    for ADMIN in $LISTADMIN; do {
-      if [ -z "$($GPGLIST | grep ^pub | cut -d : -f 10 | grep -i \<$ADMIN\>$)" ]; then
-        echo -e "\n$CONFIG: GPG key for list administrator \"$ADMIN\" could not be found."
-        echo -e "$CONFIG: Note that this parameter expects one or more space separated email addresses.\n"
-        exit 1
-      fi; }
-    done
-  fi
-}
-
-function GPGSTDERR {
-  # discard $GPGDECRYPT STDOUT and get its STDERR instead, for signature checking
-  echo -e "$PASSWD\n${GPG_MESSAGE[@]}" | sed -e 's/^ //' | ($GPGDECRYPT --status-fd 2 1> /dev/null) 2>&1 ;
-}
-
-function SUBSCRIBERS {
-  # get list susbscriber's addresses
-  $GPGLIST | sed -ne "/$LISTNAME/Id" -e '/pub/p' | cut -d : -f 10 | grep -o '<[^<>]*>$' | sed -e 's/[<>]//g' ;
-}
-
-function get_message {
-  n=0;
-  while read STDIN; do
-    MESSAGE[$n]="$STDIN\n"
-    ((++n))
-  done
-}
-
-function get_gpg_message {
-  signal=0; x=0;
-  for ((count=0;count<=n;count++)); do
-    if [[ $signal == "0" ]] && [[ "$(echo "${MESSAGE[$count]}" | grep -v -e "-----BEGIN PGP MESSAGE-----")" == "" ]]; then
-      GPG_MESSAGE[$x]=${MESSAGE[$count]}; ((++x))
-      signal=1
-    elif [[ $signal == "1" ]]; then
-      GPG_MESSAGE[$x]=${MESSAGE[$count]}
-      ((++x))
-      if [[ "$(echo "${MESSAGE[$count]}" | grep -v -e "-----END PGP MESSAGE-----")" == "" ]]; then
-        signal=0
-      fi
-    fi
-  done
-}
-
-function get_headers {
-  # get the message headers and the sender's email address
-  FROM=$(echo -e "${MESSAGE[@]}" | grep -m 1 "From:" | cut -d : -f 2- | sed -e 's/^ //')
-  FROMADD=$(if [ -z "$(echo $FROM | grep '>$')" ] ; then echo $FROM ; else echo $FROM | grep -o '<[^<>]*>$' | sed -e 's/[<>]//
-g' ; fi)
-  DATE=$(echo -e "${MESSAGE[@]}" | grep -m 1 "Date:")
-  SUBJECT=$(echo -e "${MESSAGE[@]}" | grep -m 1 "Subject:" | cut -d : -f 2- | sed -e 's/^ //')
-}
-
-function message_list {
-# compose and send a message to the list
-# $1: subscriber email
-# sorry no identation :P  
-echo "$PASSWD
-Message from: $FROM
-Subject: $SUBJECT
-$DATE
-  
-$(GPGSTDERR | grep -F 'gpg: Signature made')
-$(GPGSTDERR | grep -F 'gpg: Good signature from')
-  
-$(echo -e "$PASSWD\n${GPG_MESSAGE[@]}" | $GPGDECRYPT 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $1 | $MAIL -r $LISTNAME $1
-}
-
-function message_list_error {
-# compose and send an error message
-# sorry no identation :P  
-echo "$PASSWD
-Message from: $FROM
-Subject: [BAD SIGNATURE] $SUBJECT
-$DATE
-  
-$(GPGSTDERR | grep -F 'gpg: Signature made')
-$(GPGSTDERR | grep -F 'gpg: BAD signature from')
- 
-$(echo -e "$PASSWD\n${GPG_MESSAGE[@]}" | $GPGDECRYPT 2> /dev/null)" | sed -e 's/=20$//' | $GPGENCRYPT $1 | $MAIL -r $LISTNAME $1
-}
-
-function message_list_return {
-# send a bouce message
-# $1: sender email (usually $FROMADD)
-# sorry no identation :P  
-echo "
-Message from: $FROM
-Subject: [RETURNED MAIL] $SUBJECT
-$DATE
-  
-  [ It was not possible to process this message. Either or both
-    the message was not encrypted and/or signed, or you are not
-    subscribed to this list.  Contact the list administrator if
-    you have any questions. ]
- 
-  -- 
-  firma v$VERSION" | $MAIL -r $LISTNAME $1
-}
-
-function process_message {
-  # process a message sent to the list
-
-  get_message
-  get_headers 
-  get_gpg_message
-
-  # if signature is Good, encrypt and send it for each list subscriber
-  # todo: declare a function to decrypt, re-encrypt and send the list messages
-  if (GPGSTDERR | grep -Fq GOODSIG); then
-  
-    for EMAIL in $(SUBSCRIBERS); do 
-      message_list $EMAIL
-    done
-  
-  # else, if signature is BAD, email it back to the list admins and to sender
-  elif (GPGSTDERR | grep -Fq BADSIG) ; then
-  
-    for EMAIL in $(echo $LISTADMIN $FROMADD); do
-      message_list_error $EMAIL
-    done
-  
-  # else, probably either the message was not signed or the sender is not subscribed to the list
-  # email the message back to sender including a note about this
-  # todo: parse STDERR to find out why the signature couldn't be checked and send more specific errors back to sender
-  else
-    message_list_return $FROMADD 
-  fi
-   
-}
-
-function newlist {
-  # create a list if it doesnt already exist
-  if [ ! -d "$CONFIG_PATH" ]; then
-    echo creating folder $CONFIG_PATH...
-    mkdir "$CONFIG_PATH" # || (echo "error creating $CONFIG_PATH: installation aborted"; exit 1)
-    echo "creating list config file and will ask some questions."
-
-    GPGDIR="$CONFIG_PATH"  
- 
-    read -p "path to nail command (eg, /usr/bin/nail): " MAIL
-    read -p "path to gpg binary (eg, /usr/bin/gpg): " GPG
-
-    # if [ ! -x $GPG ]; then 
-
-    read -p "list keyring folder (defaults to $GPGDIR): " GPGDIR
-
-    # todo: please no utf-8 (see DETAILS)
-    read -p "list email (eg, firma@domain.tld): " LISTNAME
-    read -p "list admins emails (space delimited)" LISTADMIN
-    read -p "password for list keyring (use a huge one): " PASSWD 
-
-    # todo: key specs (size, expiry date...)
-
-    echo "creating your config..."
-    touch $CONFIG
-    chown root.root $CONFIG
-    chmod 600 $CONFIG
-    if [ -f $CONFIG ]; then
-      echo -e "MAIL=$MAIL\nGPG=$GPG\nGPGDIR=$GPGDIR\nLISTNAME=$LISTNAME\nLISTADMIN=$LISTADMIN\nPASSWD=$PASSWD" > $CONFIG
-      echo "now generating your keyring..."
-      # re-eval GPGCOMMAND
-      # todo: GPGFLAGS depende de GPGDIR
-      GPGCOMMAND="$GPG $GPGFLAGS"
-      $GPGCOMMAND --gen-key  
-
-    fi
-  else
-    echo error creating $CONFIG_FILE: list already exists
-    exit 1 
-  fi
-}
-
-# main -
-# command line checking
-if [ -z $2 ]; then
-  usage; exit 1
-else
-  CONFIG_FILE="$2"
-  CONFIG_PATH="$FIRMA_LIST_PATH/$2"
-  CONFIG="$CONFIG_PATH/$2.conf"
-fi
-
-# if the configuration file exists, disable "sourcepath" and evaluate the parameters
-if [ -f $CONFIG ] && [[ $1 != "-c" ]]; then
-  shopt -u sourcepath && source $CONFIG
-else
-  echo -e "\nConfiguration file \"$CONFIG\" could not be found.\n"
-  exit 1
-fi
-
-declare -a MESSAGE
-declare -a GPG_MESSAGE
-declare n
-export LANG=en_US
-
-# declare GPG variables
-GPGFLAGS="--quiet --homedir $GPGDIR --batch --no-tty --no-use-agent --no-permission-warning"
-GPGCOMMAND="$GPG $GPGFLAGS"
-GPGLIST="$GPGCOMMAND --list-keys --with-colons"
-GPGDECRYPT="$GPGCOMMAND --passphrase-fd 0 --decrypt"
-GPGENCRYPT="$GPGCOMMAND --passphrase-fd 0 --always-trust --encrypt --sign --armor --recipient"
-
-# then check the config
-check_config
-
-# command line parsing
-if [[ $1 == "-c" ]]; then
-  newlist 
-elif [[ $1 == "-p" ]]; then
-  process_message
-elif [[ $1 == "-a" ]]; then
-  list_admin
-elif [[ $1 == "-r" ]]; then
-  list_request
-else
-  usage; exit 1
-fi 
- 
-- 
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