diff options
Diffstat (limited to 'misc/poc/firma-0.2.2')
-rwxr-xr-x | misc/poc/firma-0.2.2 | 153 |
1 files changed, 0 insertions, 153 deletions
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 |