Pileus Git - vpaste/blob - index.cgi

   1 #!/bin/bash
   2
   3 # Copyright (C) 2009-2012 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 function get_param {
  22         get_modeline | awk -v "key=$1" 'BEGIN{RS=" "; FS="="}; $1 ~ key {print $2}'
  23 }
  24
  25 # Extract an uploaded file from standard input
  26 #   $1 is the name of the input to extract
  27 function cut_file {
  28         bnd="${CONTENT_TYPE/*boundary\=/}"
  29         awk -v "want=$1" -v "bnd=$bnd" '
  30                 BEGIN { RS="\r\n" }
  31
  32                 # reset based on boundaries
  33                 $0 == "--"bnd""     { st=1; next; }
  34                 $0 == "--"bnd"--"   { st=0; next; }
  35                 $0 == "--"bnd"--\r" { st=0; next; }
  36
  37                 # search for wanted file
  38                 st == 1 && $0 ~  "^Content-Disposition:.* name=\""want"\"" { st=2; next; }
  39                 st == 1 && $0 == "" { st=9; next; }
  40
  41                 # wait for newline, then start printing
  42                 st == 2 && $0 == "" { st=3; next; }
  43                 st == 3             { print $0    }
  44         ' | head -c $((128*1024)) # Limit size to 128K
  45 }
  46
  47 # Print out a generic header
  48 function header {
  49         echo "Content-Type: $1; charset=UTF-8"
  50         if [[ "$HTTP_ACCEPT_ENCODING" == *'gzip'* ]]; then
  51                 echo "Content-Encoding: gzip"
  52                 echo
  53                 exec 1> >(gzip)
  54         else
  55                 echo
  56         fi
  57 }
  58
  59 # Print plain message and exit
  60 function message {
  61         while [ "$1" == '-h' ]; do
  62                 shift; echo "$1"; shift
  63         done
  64         header text/plain
  65         echo "$*"
  66         exit
  67 }
  68
  69 # List previous pastes
  70 function do_cmd {
  71         header text/plain
  72         case "$1" in
  73         head)
  74                 awk -v 'rows=4' -v 'cols=60' '
  75                         FNR==1      { gsub(/.*\//, "", FILENAME);
  76                                       print FILENAME
  77                                       print "-----" }
  78                         FNR==1,/^$/ { next }
  79                         /\S/        { i++; printf "%."cols"s\n", $0 }
  80                         i>=rows     { nextfile  }
  81                         ENDFILE     { i=0; print ""  }
  82                 ' $(ls -t db/*)
  83                 ;;
  84         ls)
  85                 ls -t db | column
  86                 ;;
  87         esac
  88 }
  89
  90 # Format a file for viewing
  91 function do_print {
  92         if [ -f "./$1" ]; then
  93                 input="$1"
  94         elif [ -f "db/$1" ]; then
  95                 input="db/$1"
  96                 trim='1,/^$/d' # sed command to remove cruft
  97         else
  98                 message -h 'Status: 404 Not Found' \
  99                         "File '$1' not found"
 100         fi
 101
 102         # Check for raw paste
 103         if [[ "$QUERY_STRING" == 'raw'* ||
 104               "$REQUEST_URI"  != *'?'* &&
 105               ( "$input"       != 'db/'* ||
 106                 "$HTTP_ACCEPT" != *'html'* ) ]]; then
 107                 header text/plain
 108                 sed "$trim" "$input"
 109                 exit
 110         fi
 111
 112         # Create a temp file with the provided modeline
 113         output="$(mktemp)"
 114         tmp="$(mktemp)"
 115         sed "\$avim: $(get_modeline)" "$input" > "$tmp"
 116
 117         # - I have some plugins in ~/.vim
 118         # - Run ex in screen to trick it into thinking that it
 119         #   has a real terminal, note that we also have to set
 120         #   term=xterm-256color in vimrc
 121         HOME=/home/andy \
 122         screen -D -m ex -nXZ -i NONE -u vimrc \
 123                 '+sil! set fde= fdt= fex= inde= inex= key= pa= pexpr=' \
 124                 '+sil! set iconstring= ruf= stl= tal=' \
 125                 "+sil! set titlestring=$1\ -\ vpaste.net" \
 126                 '+sil! set noml'     \
 127                 '+sil! $d|'$trim     \
 128                 '+sil! %s/\r//g' \
 129                 '+sil! TOhtml'       \
 130                 "+sav! $output" \
 131                 '+qall!'        \
 132                 "$tmp"
 133
 134         header text/html
 135         cat "$output"
 136         rm "$tmp" "$output"
 137 }
 138
 139
 140 # Upload handler
 141 function do_upload {
 142         body=$(cat -)
 143         spam=$(echo -n "$body" | cut_file "ignoreme")
 144         text=$(echo -n "$body" | cut_file "(text|x)")
 145         [ ! -z "$spam" ] && message "Spam check.."
 146         [   -z "$text" ] && message "No text pasted"
 147
 148         # Format and save message
 149         output="$(mktemp db/XXXXX)"
 150         cat >"$output" <<-EOF
 151                 vim: $(get_modeline)
 152                 Date: $(date -R)
 153                 From: $REMOTE_ADDR
 154
 155                 $text
 156         EOF
 157
 158         # Redirect user
 159         uri="$url$(basename "$output")"
 160         message -h 'Status: 302 Found' \
 161                 -h "Location: $uri"    \
 162                 "$uri"
 163 }
 164
 165 # Default index page
 166 function do_help {
 167         filetypes=$(
 168                 ls /usr/share/vim/vim*/syntax/ /home/andy/.vim/syntax/ |
 169                 sed -n '/^\(syntax\|manual\|synload\|2html\|colortest\|hitest\).vim$/d; s/.vim$//p' |
 170                 sort | uniq
 171         )
 172         uploads=$(ls -t db | head -n 5)
 173         filetype=$(get_param '^(ft|filet(y(pe?)?)?)$')
 174         vpaste='<a href="vpaste?ft=sh">vpaste</a>'
 175
 176         header text/html
 177         cat <<-EOF
 178         <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 179           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 180         <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 181                 <head>
 182                         <title>vpaste.net - Vim based pastebin</title>
 183                         <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
 184                         <meta name="description" content="vpaste: Vim based pastebin" />
 185                         <meta name="keywords" content="vpaste,paste,pastebin,vim" />
 186                         <meta name="google-site-verification" content="OvHF73zD7osJ1VSq9rJxnMFlja36944ud6CiP_iXQnI" />
 187                         <style type="text/css">
 188                                 *          { margin: 0;
 189                                              padding: 0; }
 190                                 body       { margin: 4em 8em 4em 8em;
 191                                              font-family: sans-serif; }
 192                                 /* Items */
 193                                 textarea   { width: 100%;
 194                                              margin-bottom: 0.5em; }
 195                                 .buttons   { float: left; }
 196                                 .links     { float: right; }
 197                                 .links *   { text-decoration: none;
 198                                              margin-left: 0.5em; }
 199                                 .box       { display: none;
 200                                              clear: both;
 201                                              margin-top: 2.7em;
 202                                              border-top: solid 1px #888; }
 203                                 /* box contents */
 204                                 h1         { margin-top: 1.0em;
 205                                              font-size: larger; }
 206                                 ul,dd,dl,p { margin: 0 0 0 2em; }
 207                                 dt         { font-weight: bold;
 208                                              padding: 0.5em 0 0 0; }
 209                                 span       { font-family: monospace; }
 210                                 .cmds dd   { font-family: monospace; }
 211                         </style>
 212                         <script type="text/javascript">
 213                                 //<![CDATA[
 214                                 function show(id) {
 215                                         var boxes = document.getElementsByClassName('box')
 216                                         for (var i = 0; i < boxes.length; i++) {
 217                                                 var box = boxes[i]
 218                                                 if (box.id == id && box.style.display != 'block')
 219                                                         box.style.display = 'block'
 220                                                 else
 221                                                         box.style.display = "none"
 222                                         }
 223                                 }
 224                                 function autoshow() {
 225                                         var id  = document.location.toString().replace(/.*#/, '')
 226                                         var box = document.getElementById(id)
 227                                         if (box) box.style.display = "block"
 228                                 }
 229                                 //]]>
 230                         </script>
 231                 </head>
 232
 233                 <body onload="autoshow()">
 234                         <form id="form" method="post" action="" enctype="multipart/form-data">
 235                                 <div>
 236                                         <input style="display:none" type="text" name="ignoreme" value="" />
 237                                         <textarea name="text" cols="80" rows="25"></textarea>
 238                                 </div>
 239                                 <div class="buttons">
 240                                         <select onchange="document.getElementById('form').action =
 241                                                           document.location + '?ft=' + this.value;">
 242                                                 <option value="" disabled="disabled">Filetype</option>
 243                                                 <option value="">None</option>
 244                                                 $(for ft in $filetypes; do
 245                                                         echo "<option$(
 246                                                         [ "$ft" = "$filetype" ] &&
 247                                                                 echo ' selected="selected"'
 248                                                         )>$ft</option>"
 249                                                 done)
 250                                         </select>
 251                                         <input type="submit" value="Paste" />
 252                                 </div>
 253                                 <div class="links">
 254                                         <a href="">vpaste</a> <span>-</span>
 255                                         <a href="#usage"   onclick="show('usage'  )">Usage</a>
 256                                         <a href="#devel"   onclick="show('devel'  )">Development</a>
 257                                         <a href="#uploads" onclick="show('uploads')">Uploads</a>
 258                                 </div>
 259                         </form>
 260
 261                         <div class="box" id="usage">
 262                                 <h1>Pasting</h1>
 263                                 <dl class="cmds">
 264                                         <dt>From a shell</dt>
 265                                         <dd> $vpaste file [option=value,..]</dd>
 266                                         <dd> &lt;command&gt; | $vpaste [option=value,..]</dd>
 267
 268                                         <dt>From Vim</dt>
 269                                         <dd> :map vp :exec "w !vpaste ft=".&amp;ft&lt;CR&gt;</dd>
 270                                         <dd> :vmap vp &lt;ESC&gt;:exec "'&lt;,'&gt;w !vpaste ft=".&amp;ft&lt;CR&gt;</dd>
 271
 272                                         <dt>With curl</dt>
 273                                         <dd> &lt;command&gt; | curl -F 'text=&lt;-' $url[?option=value,..]</dd>
 274                                 </dl>
 275
 276                                 <h1>Options</h1>
 277                                 <p>Add <b>?option[=value],..</b> to make your text a rainbow.</p>
 278                                 <p>Options specified when uploading are saved as defaults.</p>
 279
 280                                 <dl>
 281                                         <dt>bg, background={light|dark}</dt>
 282                                         <dd>Background color to use for the page</dd>
 283                                         <dt>et, expandtab</dt>
 284                                         <dd>Expand tabs to spaces</dd>
 285                                         <dt>fdm, foldmethod=(syntax|indent)</dt>
 286                                         <dd>Turn on dynamic code folding</dd>
 287                                         <dt>ft, filetype={filetype}</dt>
 288                                         <dd>A filetype to use for highlighting, see above menu for supported types</dd>
 289                                         <dt>nu, number</dt>
 290                                         <dd>Add line numbers</dd>
 291                                         <dt>ts, tabstop=[N]</dt>
 292                                         <dd>Number of spaces to use for tabs when <b>et</b> is set</dd>
 293                                         <dt>...</dt>
 294                                         <dd>See :help modeline for more information</dd>
 295                                 </dl>
 296                         </div>
 297
 298                         <div class="box" id="devel">
 299                                 <h1>License</h1>
 300                                 <p>Copyright © 2009-2012
 301                                    Andy Spencer &lt;andy753421@gmail.com&gt;</p>
 302                                 <p>See individual files for licenses</p>
 303
 304                                 <h1>Source code</h1>
 305                                 <ul>
 306                                         <li><a href="vpaste?ft=sh">vpaste</a></li>
 307                                         <li><a href="index.cgi?ft=sh">index.cgi</a>
 308                                             <a href="vimrc?ft=vim">vimrc</a>
 309                                             <a href="htaccess?ft=apache">htaccess</a>
 310                                             <a href="robots.txt?ft=robots">robots.txt</a>
 311                                             <a href="sitemap.xml?ft=xml">sitemap.xml</a></li>
 312                                         <li><a href="2html.patch?ft=diff">2html.patch</a></li>
 313                                         <li><a href="https://lug.rose-hulman.edu/svn/misc/trunk/htdocs/vpaste/">Subversion</a></li>
 314                                 </ul>
 315
 316                                 <h1>Bugs</h1>
 317                                 <ul>
 318                                         <li>Using strange filetypes (ft=2html) may result in strange output.</li>
 319                                         <li><a href="mailto:andy753421@gmail.com?subject=vpaste bug">Other?</a></li>
 320                                 </ul>
 321                         </div>
 322
 323                         <div class="box" id="uploads">
 324                                 <h1>Recent Uploads</h1>
 325                                 <ul>$(for upload in ${uploads[@]}; do
 326                                     echo -n "<li>"
 327                                     echo -n "<span>$upload</span> "
 328                                     echo -n "<a href='$upload?raw'>text</a> "
 329                                     echo -n "<a href='$upload'>rainbow</a>"
 330                                     echo "</li>"
 331                                 done)
 332                                 </ul>
 333                                 <p><a href="ls">list all</a></p>
 334                                 <p><a href="head">sample all</a></p>
 335                         </div>
 336                 </body>
 337         </html>
 338         EOF
 339 }
 340
 341 # Main
 342 PATH=/bin:/usr/bin
 343 url="http://$HTTP_HOST${REQUEST_URI/\?*}"
 344 pathinfo="${REQUEST_URI/*\/}"
 345 pathinfo="${pathinfo/\?*}"
 346
 347 if [ "$pathinfo" = ls ]; then
 348         do_cmd ls
 349 elif [ "$pathinfo" = head ]; then
 350         do_cmd head
 351 elif [ "$pathinfo" ]; then
 352         do_print "$pathinfo"
 353 elif [ "$CONTENT_TYPE" ]; then
 354         do_upload
 355 else
 356         do_help
 357 fi