Pileus Git - vpaste/blob - index.cgi

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