Import current version from ftp.isc.org /pub/pgpcontrol.
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Russ Allbery
parent
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1 changed files with 210 additions and 0 deletions
210
sign.sh
Executable file
210
sign.sh
Executable file
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#!/bin/sh
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# vi:ts=4:ai
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# $Id$
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#
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# Unterzeichnet Newsartikel mittels PGP
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# Heiko Schlichting (heiko@fu-berlin.de)
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#
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# $Log$
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# Revision 1.1 2003/07/06 18:58:06 eagle
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# Import current version from ftp.isc.org /pub/pgpcontrol.
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#
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# Revision 1.8 1996/08/09 22:25:27 heiko
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# ignore case in headers but keep the right case to sign
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# filter unwanted headerlines
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# sign an already signed article works now
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#
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# Revision 1.7 1996/08/07 19:00:08 heiko
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# SIGNER could contain spaces.
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#
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# Revision 1.6 1996/08/07 18:17:13 lutz
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# SIGNER might be preset. (lutz@as-node.jena.thur.de)
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#
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# Revision 1.5 1996/08/07 01:36:35 heiko
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# Skip articles if not found.
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#
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# Revision 1.4 1996/08/07 01:15:38 heiko
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# Debug statement removed
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#
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# Revision 1.3 1996/08/07 01:14:22 heiko
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# Initial Version
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#
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#
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###################### START OF CONFIGURATION SECTION ######################
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# Configure pathnames to required programs
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GAWK=/usr/local/bin/gawk
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PGP=/usr/local/bin/pgp
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# Who should sign the article?
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if [ -z "$SIGNER" ]; then
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SIGNER="de.admin.news.announce"
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fi
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# STORING YOUR PASS PHRASE IN A FILE IS A SECURITY HOLE!
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# If you don't define PGPPASSFILE, you can use this script interactively.
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PGPPASSFILE=""
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####################### END OF CONFIGURATION SECTION #######################
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PRG=$0
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check()
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{
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if [ ! -x $1 ]; then
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echo "Required executable $1 not found."
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echo "You should configure $PRG."
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exit 2
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fi
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}
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# Usage message
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if [ $# -eq 0 ]; then
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echo "Usage: $PRG article ..."
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exit 1
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fi
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# Are the executables available?
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for EXE in $GAWK $PGP;
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do
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check "$EXE"
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done
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if [ ! -z "$PGPPASSFILE" -a -f "$PGPPASSFILE" ];
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then
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PGPPASS=`cat "$PGPPASSFILE"`
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export PGPPASS
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fi
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while [ $# -gt 0 ]; do
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article=$1
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if [ ! -f ${article} ]; then
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echo "${article}: not found - skipped"
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shift
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continue
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fi
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rm -f ${article}.new
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trap "rm -f ${article}.new; exit 0" 0 1 2 3 15
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$GAWK -F: '
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BEGIN{
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# Which headers should be signed?
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headernames="Subject:Control:Message-ID:Date:From:Sender:Newsgroups:Approved:Followup-To"
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split(headernames,header)
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IGNORECASE=1
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body=0
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i=0
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last=0
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}
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# After processing the header, print it
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!NF&&!body{
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body=1
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print "X-Signed-Headers:",sig
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for (h=0; h < i; h++) {
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print ph[h]
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}
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}
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# Article body
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body{print;next}
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# For continuation header lines
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$0~/^[ \t]/ {
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if (last==1) {
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ph[i-1]=ph[i-1]"\n"$0
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}
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next
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}
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# Normal header lines
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{
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for (h in header) {
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if (match($1,"^"header[h]"$")){
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ph[i]=$0
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if (i) {
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sig=sig","$1
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}else{
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sig=$1
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}
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i++
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last=1
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next
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}else{
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last=0
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}
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}
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}
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' $article | $PGP -fast -u "$SIGNER" +verbose=0 +language="en" |
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$GAWK -v artfile="$article" '
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BEGIN{
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body=0
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skip=0
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version="unknown"
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# Which header should be filtered?
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filternames="X-PGP-Sig:NNTP-Posting-Host:NNTP-Posting-User:Path:To:Cc:X-Access:Lines:X-Newsreader"
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split(filternames,filter,":")
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IGNORECASE=1
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while ((getline header < artfile) >0) {
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if (length(header)>0) {
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if (skip && match(header,/^[ \t]/)){
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continue
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}
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skip=0
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for (f in filter) {
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if (match(header,"^"filter[f]":[ \t]")){
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skip=1
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}
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}
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if (!skip) {
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print header
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}
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} else {
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break
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}
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}
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IGNORECASE=0
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}
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$1~/^X-Signed-Headers:/&&!body{
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sig=$2
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next
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}
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$0~/^-----BEGIN PGP SIGNATURE-----$/{
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body=1
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next
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}
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$0~/^Version:/&&(body==1){
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version=$2
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next
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}
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$0~/^-----END PGP SIGNATURE-----$/{
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body=0
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next
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}
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!NF&&(body==1){
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body=2
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print "X-PGP-Sig:",version,sig
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next
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}
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body==2{
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print "\t"$0
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}
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END{
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print ""
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while ((getline < artfile) >0) {
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print $0
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}
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close (artfile)
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}
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' > ${article}.new
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if [ -s ${article}.new ]; then
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mv ${article} ${article}.bak
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mv ${article}.new $article
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echo "${article}: ok"
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else
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echo "${article}: FAILED"
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rm -f ${article}.new
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fi
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shift
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done
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