Pileus Git - vpaste/blob - index.cgi

   1 #!/bin/bash
   2
   3 # Copyright (C) 2009-2011 Andy Spencer
   4 #
   5 # This program is free software: you can redistribute it and/or modify it under
   6 # the terms of the GNU Affero General Public License as published by the Free
   7 # Software Foundation, either version 3 of the License, or (at your option) any
   8 # later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but WITHOUT
  11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12 # FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
  13 # details.
  14
  15 # Remove url codings from stdin
  16 function get_modeline {
  17         echo "$QUERY_STRING" |
  18         sed -e 's/%\([0-9A-F][0-9A-F]\)/\\\\\x\1/g; s/[,&]/ /g' |
  19         xargs echo -e
  20 }
  21
  22 # Extract an uploaded file from standard input
  23 #   $1 is the name of the input to extract
  24 function cut_file {
  25         bnd="${CONTENT_TYPE/*boundary\=/}"
  26         awk -v "want=$1" -v "bnd=$bnd" '
  27                 BEGIN { RS="\r\n" }
  28
  29                 # reset based on boundaries
  30                 $0 == "--"bnd""     { st=1; next; }
  31                 $0 == "--"bnd"--"   { st=0; next; }
  32                 $0 == "--"bnd"--\r" { st=0; next; }
  33
  34                 # search for wanted file
  35                 st == 1 && $0 ~  "^Content-Disposition:.* name=\""want"\"" { st=2; next; }
  36                 st == 1 && $0 == "" { st=9; next; }
  37
  38                 # wait for newline, then start printing
  39                 st == 2 && $0 == "" { st=3; next; }
  40                 st == 3             { print $0    }
  41         ' | head -c $((128*1024)) # Limit size to 128K
  42 }
  43
  44 # Print out a generic header
  45 function header {
  46         echo "Content-Type: $1; charset=UTF-8"
  47         echo
  48 }
  49
  50 # Print plain message and exit
  51 function message {
  52         while [ "$1" == '-h' ]; do
  53                 shift; echo "$1"; shift
  54         done
  55         header text/plain
  56         echo "$*"
  57         exit
  58 }
  59
  60 # List previous pastes
  61 function do_cmd {
  62         header text/plain
  63         case "$1" in
  64         head)
  65                 for i in $(ls -t db/*); do
  66                         basename $i
  67                         basename $i | sed 's/./-/g'
  68                         sed '1,/^$/d; /^\s*$/d' $i | sed -n '1,5s/\(.\{0,60\}\).*/\1/p'
  69                         echo
  70                 done
  71                 ;;
  72         ls)
  73                 ls -t db | column
  74                 ;;
  75         esac
  76 }
  77
  78 # Format a file for viewing
  79 function do_print {
  80         if [ -f "./$1" ]; then
  81                 input="$1"
  82         elif [ -f "db/$1" ]; then
  83                 input="db/$1"
  84                 trim='1,/^$/d' # sed command to remove cruft
  85         else
  86                 message -h 'Status: 404 Not Found' \
  87                         "File '$1' not found"
  88         fi
  89
  90         # Check for raw paste
  91         if [[ "$QUERY_STRING" == 'raw'* ||
  92               "$REQUEST_URI"  != *'?'* &&
  93               "$HTTP_ACCEPT"  != *'html'* ]]; then
  94                 header text/plain
  95                 sed "$trim" "$input"
  96                 exit
  97         fi
  98
  99         # Create a temp file with the provided modeline
 100         output="$(mktemp)"
 101         tmp="$(mktemp)"
 102         sed "\$avim: $(get_modeline)" "$input" > "$tmp"
 103
 104         # - I have some plugins in ~/.vim
 105         # - Run ex in screen to trick it into thinking that it
 106         #   has a real terminal, note that we also have to set
 107         #   term=xterm-256color in vimrc
 108         HOME=/home/andy \
 109         screen -D -m ex -nXZ -i NONE -u vimrc \
 110                 '+sil! set fde= fdt= fex= inde= inex= key= pa= pexpr=' \
 111                 '+sil! set iconstring= ruf= stl= tal=' \
 112                 "+sil! set titlestring=$1\ -\ vpaste.net" \
 113                 '+sil! set noml'     \
 114                 '+sil! $d|'$trim     \
 115                 '+sil! %s/\r//g' \
 116                 '+sil! TOhtml'       \
 117                 "+sav! $output" \
 118                 '+qall!'        \
 119                 "$tmp"
 120
 121         header text/html
 122         cat "$output"
 123         rm "$tmp" "$output"
 124 }
 125
 126
 127 # Upload handler
 128 function do_upload {
 129         body=$(cat -)
 130         spam=$(echo -n "$body" | cut_file "ignoreme")
 131         text=$(echo -n "$body" | cut_file "(text|x)")
 132         [ ! -z "$spam" ] && message "Spam check.."
 133         [   -z "$text" ] && message "No text pasted"
 134
 135         # Format and save message
 136         output="$(mktemp db/XXXXX)"
 137         cat >"$output" <<-EOF
 138                 vim: $(get_modeline)
 139                 Date: $(date -R)
 140                 From: $REMOTE_ADDR
 141
 142                 $text
 143         EOF
 144
 145         # Redirect user
 146         uri="$url$(basename "$output")"
 147         message -h 'Status: 302 Found' \
 148                 -h "Location: $uri"    \
 149                 "$uri"
 150 }
 151
 152 # Default index page
 153 function do_help {
 154         filetypes=$(
 155                 ls /usr/share/vim/vim*/syntax/ /home/andy/.vim/syntax/ |
 156                 sed -n '/^\(syntax\|manual\|synload\|2html\|colortest\|hitest\).vim$/d; s/.vim$//p' |
 157                 sort | uniq
 158         )
 159         uploads=$(ls -t db | head -n 5)
 160
 161         header text/html
 162         cat <<-EOF
 163         <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 164           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 165         <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 166             <head>
 167                 <title>vpaste.net - Vim based pastebin</title>
 168                 <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
 169                 <meta name="description" content="vpaste: Vim based pastebin" />
 170                 <meta name="keywords" content="vpaste,paste,pastebin,vim" />
 171                 <style type="text/css">
 172                     * { margin:0; padding:0; }
 173                     body { margin:1em; }
 174                     h4 { margin:1em 0 0 0; }
 175                     blockquote,dd,dl,p,pre,ul { margin:0 0 0 2em; }
 176                     dt { font-weight:bold; padding:0.5em 0 0 0; }
 177                     blockquote { width:50em; font-size:small; }
 178                     span { font-family:monospace; }
 179                 </style>
 180             </head>
 181             <body>
 182                 <form id="form" method="post" action="" enctype="multipart/form-data">
 183                 <div style="margin:0 0 1.5em 0;">
 184                 <input style="display:none" type="text" name="ignoreme" value="" />
 185                 <textarea name="text" cols="80" rows="25" style="width:100%; height:20em;"></textarea>
 186                 <select onchange="document.getElementById('form').action =
 187                     document.location + '?ft=' + this.value;">
 188                 <option value="" selected="selected" disabled="disabled">Filetype</option>
 189                 <option value="">None</option>
 190                 $(for ft in $filetypes; do
 191                     echo "<option>$ft</option>"
 192                 done)
 193                 </select>
 194                 <input type="submit" value="Paste" />
 195                 </div>
 196                 </form>
 197
 198                 <h4>NAME</h4>
 199                 <p>vpaste: Vim based pastebin</p>
 200
 201                 <h4>SYNOPSIS</h4>
 202                 <div>
 203                 <pre> vpaste file [option=value,..]</pre>
 204                 <pre> &lt;command&gt; | vpaste [option=value,..]</pre>
 205                 <br />
 206                 <pre> &lt;command&gt; | curl -F 'text=&lt;-' $url[?option=value,..]</pre>
 207                 <br />
 208                 <pre> :map vp :exec "w !vpaste ft=".&amp;ft&lt;CR&gt;</pre>
 209                 <pre> :vmap vp &lt;ESC&gt;:exec "'&lt;,'&gt;w !vpaste ft=".&amp;ft&lt;CR&gt;</pre>
 210                 </div>
 211
 212                 <h4>DESCRIPTION</h4>
 213                 <p>Add <b>?option[=value],..</b> to make your text a rainbow.</p>
 214                 <p>Options specified when uploading are stored as defaults.</p>
 215
 216                 <h4>OPTIONS</h4>
 217                 <dl>
 218                 <dt>ft, filetype={filetype}</dt>
 219                 <dd>A filetype to use for highlighting, see above menu for supported types</dd>
 220                 <dt>fdm, foldmethod=(syntax|indent)</dt>
 221                 <dd>Turn on dynamic code folding</dd>
 222                 <dt>bg, background={light|dark}</dt>
 223                 <dd>Background color to use for the page</dd>
 224                 <dt>et, expandtab</dt>
 225                 <dd>Expand tabs to spaces</dd>
 226                 <dt>ts, tabstop=[N]</dt>
 227                 <dd>Number of spaces to use for tabs when <b>et</b> is set</dd>
 228                 <dt>...</dt>
 229                 <dd>See :help modeline for more information</dd>
 230                 </dl>
 231
 232                 <h4>BUGS</h4>
 233                 <ul>
 234                 <li>Using strange filetypes (ft=2html) may result in strange output.</li>
 235                 <li><a href="mailto:andy753421@gmail.com?subject=vpaste bug">Other?</a></li>
 236                 </ul>
 237
 238                 <h4>SOURCE</h4>
 239                 <ul>
 240                 <li><a href="vpaste?ft=sh">vpaste</a></li>
 241                 <li><a href="index.cgi?ft=sh">index.cgi</a>
 242                     <a href="vimrc?ft=vim">vimrc</a>
 243                     <a href="htaccess?ft=apache">htaccess</a>
 244                     <a href="robots.txt?ft=robots">robots.txt</a>
 245                     <a href="sitemap.xml?ft=xml">sitemap.xml</a></li>
 246                 <li><a href="2html.patch?ft=diff">2html.patch</a></li>
 247                 <li><a href="https://lug.rose-hulman.edu/svn/misc/trunk/htdocs/vpaste/">Subversion</a></li>
 248                 </ul>
 249
 250                 <h4>LATEST UPLOADS</h4>
 251                 <ul>$(for upload in ${uploads[@]}; do
 252                     echo -n "<li>"
 253                     echo -n "<span>$upload</span> "
 254                     echo -n "<a href='$upload?raw'>text</a> "
 255                     echo -n "<a href='$upload'>rainbow</a>"
 256                     echo "</li>"
 257                 done)
 258                 </ul>
 259                 <p><a href="ls">list all</a></p>
 260                 <p><a href="head">sample all</a></p>
 261             </body>
 262         </html>
 263         EOF
 264 }
 265
 266 # Main
 267 PATH=/bin:/usr/bin
 268 url="http://$HTTP_HOST${REQUEST_URI/\?*}"
 269 pathinfo="${REQUEST_URI/*\/}"
 270 pathinfo="${pathinfo/\?*}"
 271
 272 if [ "$pathinfo" = ls ]; then
 273         do_cmd ls
 274 elif [ "$pathinfo" = head ]; then
 275         do_cmd head
 276 elif [ "$pathinfo" ]; then
 277         do_print "$pathinfo"
 278 elif [ "$CONTENT_TYPE" ]; then
 279         do_upload
 280 else
 281         do_help
 282 fi