not/csig

   1 #!/bin/sh
   2 DEFAULT_KEY=0xA6E706B3
   3 if expr $# "<" "1" > /dev/null; then
   4  echo "Usage: csig <file.c>"
   5  exit
   6 fi
   7
   8 echo "********* " $1 "*********"
   9
  10 if ! test -f $1; then
  11  echo $1 "no such file :("
  12  exit
  13 fi
  14
  15 if gpg --verify $1; then
  16  echo "*** already signed, and verifiable- doing nothing"
  17  exit
  18 fi
  19
  20 rm -f /tmp/csig.sign
  21 grep HEADER: $0 | grep -v grep | sed -e s/HEADER://g > /tmp/csig.plain
  22
  23 cat /tmp/csig.plain | wc -l > /tmp/header_size
  24
  25 head -n `expr \`cat /tmp/header_size\` + 4` $1 | tail -n `cat /tmp/header_size` > /tmp/diff_one
  26
  27 if `diff /tmp/csig.plain /tmp/diff_one > /dev/null`; then
  28  echo "*** ok, resigning"
  29
  30  grep TAIL: $0 | grep -v grep | sed -e s/TAIL://g > /tmp/tail
  31  cat /tmp/tail | wc -l > /tmp/tail_size
  32  expr `cat /tmp/tail_size` + 8 > /tmp/tail_size
  33
  34
  35  tail +`expr \`cat /tmp/header_size\` + 5` $1 >  /tmp/strip0
  36
  37
  38  cat /tmp/strip0 | wc -l > /tmp/strip_size
  39  head -n `expr \` cat /tmp/strip_size\` - \`cat /tmp/tail_size\`` /tmp/strip0 > /tmp/strip
  40
  41 else
  42  echo "*** ok, signing new file"
  43  cp $1 /tmp/strip
  44 fi
  45
  46 cat /tmp/strip >> /tmp/csig.plain
  47 grep TAIL: $0 | grep -v grep | sed -e s/TAIL://g >> /tmp/csig.plain
  48 if ! gpg --default-key $DEFAULT_KEY --armor --output /tmp/csig.sign --clearsign /tmp/csig.plain; then
  49  echo "*** couldn't sign for some reason (probably doesn't have the private key), aborting"
  50  rm -rf /tmp/csig.plain \
  51         /tmp/csig.sign \
  52         /tmp/diff_one \
  53         /tmp/header_size \
  54         /tmp/tail_size \
  55         /tmp/tail \
  56         /tmp/strip_size \
  57         /tmp/strip \
  58         /tmp/strip0
  59
  60  exit
  61 fi
  62
  63 echo "/*" > /tmp/strip
  64 cat /tmp/csig.sign >> /tmp/strip
  65 echo "*/" >> /tmp/strip
  66
  67 cp /tmp/strip $1
  68 rm -rf /tmp/csig.plain \
  69         /tmp/csig.sign \
  70         /tmp/diff_one \
  71         /tmp/header_size \
  72         /tmp/tail_size \
  73         /tmp/tail \
  74         /tmp/strip_size \
  75         /tmp/strip \
  76         /tmp/strip0
  77
  78 exit
  79
  80 HEADER:  m m mm mmm .----------.  .---------------------. mmm mm m m
  81 HEADER:  8 8 88 888 | .--------`  |  .------------------` 888 88 8 8
  82 HEADER:  8 8 88 888 | ```````|`V```````|   |``||``|`````| 888 88 8 8
  83 HEADER:  8 8 88 888 `------  | |  [] | |``````||  |  [] | 888 88 8 8
  84 HEADER:  8 8 88 888 |``````  | |     | ````|````  |     | 888 88 8 8
  85 HEADER:  ` ` `` ``` ``````````````>  |````````````|   |`` ``` `` ` `
  86 HEADER:                ==============`            `---`
  87 HEADER:                                 L A B O R A T O R I E S
  88 HEADER:
  89 HEADER:This file is part of Hacker Radio Rec.
  90 HEADER:
  91 HEADER:Hacker Radio Rec is free software: you can redistribute it and/or
  92 HEADER:modify it under the terms of the GNU General Public License as
  93 HEADER:published by the Free Software Foundation, either version 3 of
  94 HEADER:the License or (at your option) any later version.
  95 HEADER:
  96 HEADER:Hacker Radio Rec is distributed in the hope that it will be
  97 HEADER:useful, but WITHOUT ANY WARRANTY; without even the implied
  98 HEADER:warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  99 HEADER:See the GNU General Public License for more details.
 100 HEADER:
 101 HEADER:               Copyright (C) 2009, Thea DeSilva
 102 HEADER:  You can find a copy of GNU General Public License in COPYING
 103 HEADER:*/
 104
 105 TAIL:/*
 106 TAIL:  Thank you for your attention