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