Pileus Git - vpaste/blob - index.cgi

   1 #!/bin/bash
   2
   3 # Copyright (C) 2009-2013 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' \
  19             -e 's/[^a-zA-Z0-9.:=_\-]/ /g' |
  20         xargs echo -e
  21 }
  22 function get_param {
  23         get_modeline | awk -v "key=$1" 'BEGIN{RS=" "; FS="="}; $1 ~ key {print $2}'
  24 }
  25
  26 # Extract an uploaded file from standard input
  27 #   $1 is the name of the input to extract
  28 function cut_file {
  29         bnd="${CONTENT_TYPE/*boundary\=/}"
  30         awk -v "want=$1" -v "bnd=$bnd" '
  31                 BEGIN { RS="\r\n" }
  32
  33                 # reset based on boundaries
  34                 $0 == "--"bnd""     { st=1; next; }
  35                 $0 == "--"bnd"--"   { st=0; next; }
  36                 $0 == "--"bnd"--\r" { st=0; next; }
  37
  38                 # search for wanted file
  39                 st == 1 && $0 ~  "^Content-Disposition:.* name=\""want"\"" { st=2; next; }
  40                 st == 1 && $0 == "" { st=9; next; }
  41
  42                 # wait for newline, then start printing
  43                 st == 2 && $0 == "" { st=3; next; }
  44                 st == 3             { print $0    }
  45         ' | head -c $((128*1024)) # Limit size to 128K
  46 }
  47
  48 # Respond to a request
  49 function respond {
  50         local allow ctype heads files texts gzip h f
  51         while [ "$1" ]; do
  52                 case $1 in
  53                         -y) allow="true"; ;;
  54                         -c) ctype="$2"; shift ;;
  55                         -h) heads=("${heads[@]}" "$2"); shift ;;
  56                         -f) files=("${files[@]}" "$2"); shift ;;
  57                         *)  texts=("${texts[@]}" "$1"); ;;
  58                 esac
  59                 shift
  60         done
  61
  62         # Check if the browser supports gzip
  63         if [[ "$HTTP_ACCEPT_ENCODING" == *'gzip'* ]]; then
  64                 gzip=true
  65         fi
  66
  67         # Output header
  68         if [ "$ctype" ]; then
  69                 echo "Content-Type: $ctype; charset=UTF-8"
  70         else
  71                 echo "Content-Type: text/plain; charset=UTF-8"
  72         fi
  73         if [ "$gzip" ]; then
  74                 echo "Content-Encoding: gzip"
  75         fi
  76         if [ "$allow" ]; then
  77                 echo "Access-Control-Allow-Origin: *"
  78                 echo "Access-Control-Allow-Headers: Content-Type"
  79         fi
  80         for h in "${heads[@]}"; do
  81                 echo "$h"
  82         done
  83         echo
  84
  85         # Output text messages
  86         if [ "$texts" ]; then
  87                 if [ "$gzip" ]; then
  88                         echo "${texts[@]}" | gzip
  89                 else
  90                         echo "${texts[@]}"
  91                 fi
  92                 exit
  93         fi
  94
  95         # Output body files
  96         if [ "$files" ]; then
  97                 for f in "${files[@]}"; do
  98                         if   [[   "$gzip" && "$f" != *'.gz' ]]; then
  99                                 gzip < "$f"
 100                         elif [[ ! "$gzip" && "$f" == *'.gz' ]]; then
 101                                 zcat < "$f"
 102                         else
 103                                 cat "$f"
 104                         fi
 105                 done
 106                 exit
 107         fi
 108
 109         # Gzip remaining stream
 110         if [ "$gzip" ]; then
 111                 exec 1> >(gzip)
 112         fi
 113 }
 114
 115 # Format and output a file
 116 function format {
 117         # Create a temp file with the provided modeline
 118         tmp="$(mktemp)"
 119         sed -e  "1ivim: $(get_modeline)" \
 120             -e "\$avim: $(get_modeline)" "$1" > "$tmp"
 121
 122         # Determine cache name
 123         md5="$(cat index.cgi vimrc "$tmp" /usr/bin/ex | md5sum -b)"
 124         out="cache/${md5% *}.htm"
 125         zip="$out.gz"
 126
 127         # Cache the file, if needed
 128         if [ ! -f "$zip" ]; then
 129                 # - I have some plugins in ~/.vim
 130                 # - Run ex in pty to trick it into thinking that it
 131                 #   has a real terminal, note that we also have to set
 132                 #   term=xterm-256color in vimrc
 133                 HOME=/home/andy \
 134                 /home/vpaste/bin/pty \
 135                 /usr/bin/ex -nXZ -i NONE -u vimrc \
 136                         '+sil! set fde= fdt= fex= inde= inex= key= pa= pexpr=' \
 137                         '+sil! set iconstring= ruf= stl= tal=' \
 138                         "+sil! set titlestring=$1\ -\ vpaste.net" \
 139                         '+sil! set noml' \
 140                         '+sil! 1d|$d|'$2 \
 141                         '+sil! %s/\r//g' \
 142                         '+sil! TOhtml'   \
 143                         "+sav! $out"     \
 144                         '+qall!'         \
 145                         "$tmp" >/dev/null 2>&1
 146                 gzip "$out"
 147         fi
 148         rm "$tmp"
 149
 150         # Output the file
 151         respond -y -c "text/html" -f "$zip"
 152 }
 153
 154 # List previous pastes
 155 function do_cmd {
 156         respond
 157         case "$1" in
 158         ls)
 159                 ls -t db | column
 160                 ;;
 161         head)
 162                 awk -v 'rows=4' -v 'cols=60' '
 163                         FNR==1      { gsub(/.*\//, "", FILENAME);
 164                                       print FILENAME
 165                                       print "-----" }
 166                         FNR==1,/^$/ { next }
 167                         /\S/        { i++; printf "%."cols"s\n", $0 }
 168                         i>=rows     { nextfile  }
 169                         ENDFILE     { i=0; print ""  }
 170                 ' $(ls -t db/*)
 171                 ;;
 172         stat)
 173                 ls -l --time-style='+%Y %m' db |
 174                 awk -v 'hdr=Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec' '
 175                         BEGIN { printf "%64s\n", hdr }
 176                         NR>1  { cnt[$6+0][$7+0]++ }
 177                         END   { for (y in cnt) {
 178                                   printf "%4d", y
 179                                   for (m=1; m<=12; m++)
 180                                     printf "%5s", cnt[y][m]
 181                                   printf "\n" } }'
 182                 ;;
 183         esac
 184 }
 185
 186 # Format a file for viewing
 187 function do_print {
 188         if [ -f "./$1" ]; then
 189                 input="$1"
 190         elif [ -f "db/$1" ]; then
 191                 input="db/$1"
 192                 trim='1,/^$/d' # sed command to remove cruft
 193         else
 194                 respond -h 'Status: 404 Not Found' \
 195                         "File '$1' not found"
 196         fi
 197
 198         # Check for javascript
 199         if [[ "$input" == 'embed.js' &&
 200               "$HTTP_ACCEPT" != *'html'* ]]; then
 201                 respond -c text/javascript -f "$input"
 202         fi
 203
 204         # Check for raw paste
 205         if [[ "$QUERY_STRING" == 'raw'* ||
 206               "$REQUEST_URI"  != *'?'* &&
 207               ( "$input"       != 'db/'* ||
 208                 "$HTTP_ACCEPT" != *'html'* ) ]]; then
 209                 respond
 210                 sed "$trim" "$input"
 211                 exit
 212         fi
 213
 214         # Output the file
 215         format "$input" "$trim"
 216 }
 217
 218 # Format a file for viewing
 219 function do_view {
 220         format -
 221 }
 222
 223 # Upload handler
 224 function do_upload {
 225         body=$(cat -)
 226         spam=$(echo -n "$body" | cut_file "ignoreme")
 227         text=$(echo -n "$body" | cut_file "(text|x)")
 228         bans=$(echo -n "$REMOTE_ADDR" | grep -f blacklist)
 229
 230         [ ! -z "$spam" ] && respond -h "Status: 403 Forbidden" "Spam check.."
 231         [ ! -z "$bans" ] && respond -h "Status: 403 Forbidden" "You have been banned"
 232         [   -z "$text" ] && respond "No text pasted"
 233
 234         # Format and save message
 235         output="$(mktemp db/XXXXX)"
 236         cat >"$output" <<-EOF
 237                 vim: $(get_modeline)
 238                 Date: $(date -R)
 239                 From: $REMOTE_ADDR
 240                 User-Agent: $HTTP_USER_AGENT
 241
 242                 $text
 243         EOF
 244
 245         # Redirect user
 246         uri="$url$(basename "$output")"
 247         respond -h 'Status: 302 Found' \
 248                 -h "Location: $uri"    \
 249                 "$uri"
 250 }
 251
 252 # Default index page
 253 function do_help {
 254         filetypes=$(
 255                 ls /usr/share/vim/vim*/syntax/ /home/andy/.vim/syntax/ |
 256                 sed -n '/^\(syntax\|manual\|synload\|2html\|colortest\|hitest\).vim$/d; s/.vim$//p' |
 257                 sort | uniq
 258         )
 259         uploads=$(ls -t db 2>/dev/null | head -n 5)
 260         filetype=$(get_param '^(ft|filet(y(pe?)?)?)$')
 261         vpaste='<a href="vpaste?ft=sh">vpaste</a>'
 262         pileus='http://pileus.org/tools/vpaste'
 263         gitweb='http://pileus.org/git/?p=vpaste'
 264         mailman='http://pileus.org/mailman/listinfo/dev'
 265         repo='git://pileus.org/vpaste'
 266
 267         respond -c text/html
 268         cat <<-EOF
 269         <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 270           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 271         <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 272                 <head>
 273                         <title>vpaste.net - Vim based pastebin</title>
 274                         <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
 275                         <meta name="description" content="vpaste: Vim based pastebin" />
 276                         <meta name="keywords" content="vpaste,paste,pastebin,vim" />
 277                         <meta name="google-site-verification" content="OvHF73zD7osJ1VSq9rJxnMFlja36944ud6CiP_iXQnI" />
 278                         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 279                         <style type="text/css">
 280                                 *          { margin: 0;
 281                                              padding: 0; }
 282                                 body       { font-family: sans-serif; }
 283                                 input      { padding: 2px 6px 3px 6px; }
 284                                 a          { text-decoration: none; }
 285                                 /* Items */
 286                                 textarea   { width: 100%; }
 287                                 .box       { display: none;
 288                                              border-top: solid 1px #888; }
 289                                 /* box contents */
 290                                 h1         { margin-top: 1.0em;
 291                                              font-size: larger; }
 292                                 ul,dd,dl,p { margin: 0 0 0 2em; }
 293                                 dt         { font-weight: bold;
 294                                              padding: 0.5em 0 0 0; }
 295                                 .upload    { font-family: monospace; }
 296                                 .cmds dd   { font-family: monospace; }
 297                         </style>
 298                         <style type="text/css" media="screen and (min-device-width:800px)">
 299                                 body       { margin: 4em 8em; }
 300                                 textarea   { margin-bottom: 0.5em; }
 301                                 .buttons   { float: left; }
 302                                 .links     { float: right; }
 303                                 .links *   { margin-left: 0.5em; }
 304                                 .box       { clear: both;
 305                                              margin-top: 2.7em; }
 306                         </style>
 307                         <style type="text/css" media="screen and (max-device-width:800px)">
 308                                 textarea, input, select, .links
 309                                            { display: block;
 310                                              width: 100%;
 311                                              margin-bottom: 0.75em; }
 312                                 body       { margin: 1em; }
 313                                 textarea   { height: 17em; }
 314                                 select     { height: 2em; }
 315                                 input      { height: 3em; }
 316                                 .links     { text-align: center; }
 317                                 .links a   { margin: 0em 0.25em; }
 318                                 #vpaste    { font-size: large; }
 319                                 .sep       { display: block;
 320                                              height: 0.5em;
 321                                              visibility:hidden; }
 322                         </style>
 323                         <script type="text/javascript">
 324                                 //<![CDATA[
 325                                 function show(id) {
 326                                         var boxes = document.getElementsByClassName('box')
 327                                         for (var i = 0; i < boxes.length; i++) {
 328                                                 var box = boxes[i]
 329                                                 if (box.id == id && box.style.display != 'block')
 330                                                         box.style.display = 'block'
 331                                                 else
 332                                                         box.style.display = "none"
 333                                         }
 334                                 }
 335                                 function autoshow() {
 336                                         var id  = document.location.toString().replace(/.*#/, '')
 337                                         var box = document.getElementById(id)
 338                                         if (box) box.style.display = "block"
 339                                 }
 340                                 //]]>
 341                         </script>
 342                 </head>
 343
 344                 <body onload="autoshow()">
 345                         <form id="form" method="post" action="" enctype="multipart/form-data">
 346                                 <div>
 347                                         <input style="display:none" type="text" name="ignoreme" value="" />
 348                                         <textarea name="text" cols="80" rows="25"></textarea>
 349                                 </div>
 350                                 <div class="buttons">
 351                                         <select onchange="document.getElementById('form').action =
 352                                                           document.location + '?ft=' + this.value;">
 353                                                 <option value="" disabled="disabled">Filetype</option>
 354                                                 <option value="">None</option>
 355                                                 $(for ft in $filetypes; do
 356                                                         echo "<option$(
 357                                                         [ "$ft" = "$filetype" ] &&
 358                                                                 echo ' selected="selected"'
 359                                                         )>$ft</option>"
 360                                                 done)
 361                                         </select>
 362                                         <input type="submit" value="Paste" />
 363                                 </div>
 364                                 <div class="links">
 365                                         <a href="" id="vpaste">vpaste</a> <span class="sep">-</span>
 366                                         <a href="#usage"   onclick="show('usage'  )">Usage</a>
 367                                         <a href="#devel"   onclick="show('devel'  )">Development</a>
 368                                         <a href="#uploads" onclick="show('uploads')">Uploads</a>
 369                                 </div>
 370                         </form>
 371
 372                         <div class="box" id="usage">
 373                                 <h1>Pasting</h1>
 374                                 <dl class="cmds">
 375                                         <dt>From a shell</dt>
 376                                         <dd> $vpaste file [option=value,..]</dd>
 377                                         <dd> &lt;command&gt; | $vpaste [option=value,..]</dd>
 378
 379                                         <dt>From Vim</dt>
 380                                         <dd> :map vp :exec "w !vpaste ft=".&amp;ft&lt;CR&gt;</dd>
 381                                         <dd> :vmap vp &lt;ESC&gt;:exec "'&lt;,'&gt;w !vpaste ft=".&amp;ft&lt;CR&gt;</dd>
 382
 383                                         <dt>With curl</dt>
 384                                         <dd> &lt;command&gt; | curl -F 'text=&lt;-' $url[?option=value,..]</dd>
 385                                 </dl>
 386
 387                                 <h1>Options</h1>
 388                                 <p>Add <b>?option[=value],..</b> to make your text a rainbow.</p>
 389                                 <p>Options specified when uploading are saved as defaults.</p>
 390
 391                                 <dl>
 392                                         <dt>bg, background={light|dark}</dt>
 393                                         <dd>Background color to use for the page</dd>
 394                                         <dt>et, expandtab</dt>
 395                                         <dd>Expand tabs to spaces</dd>
 396                                         <dt>fdm, foldmethod=(syntax|indent)</dt>
 397                                         <dd>Turn on dynamic code folding</dd>
 398                                         <dt>ft, filetype={filetype}</dt>
 399                                         <dd>A filetype to use for highlighting, see above menu for supported types</dd>
 400                                         <dt>nu, number</dt>
 401                                         <dd>Add line numbers</dd>
 402                                         <dt>ts, tabstop=[N]</dt>
 403                                         <dd>Number of spaces to use for tabs when <b>et</b> is set</dd>
 404                                         <dt>...</dt>
 405                                         <dd>See :help modeline for more information</dd>
 406                                 </dl>
 407                         </div>
 408
 409                         <div class="box" id="devel">
 410                                 <h1>License</h1>
 411                                 <p>Copyright © 2009-2013
 412                                    Andy Spencer &lt;andy753421@gmail.com&gt;</p>
 413                                 <p>See individual files for licenses</p>
 414
 415                                 <h1>Source code</h1>
 416                                 <dl>
 417                                         <dt>Client</dt>
 418                                         <dd><a href="vpaste?ft=sh">vpaste</a>
 419                                             <a href="embed.js?ft=javascript">embed.js</a></dd>
 420                                         <dt>Server</dt>
 421                                         <dd><a href="index.cgi?ft=sh">index.cgi</a>
 422                                             <a href="vimrc?ft=vim">vimrc</a>
 423                                             <a href="htaccess?ft=apache">htaccess</a>
 424                                             <a href="robots.txt?ft=robots">robots.txt</a>
 425                                             <a href="sitemap.xml?ft=xml">sitemap.xml</a>
 426                                             <a href="blacklist?raw">blacklist</a></dd>
 427                                         <dt>Patches</dt>
 428                                         <dd><a href="2html.patch?ft=diff">2html.patch</a></dd>
 429                                         <dt>Development</dt>
 430                                         <dd><a href="$pileus">homepage</a>
 431                                             <a href="$gitweb">gitweb</a><br />
 432                                             <code>git clone $repo</code></dd>
 433                                 </dl>
 434
 435                                 <h1>Bugs</h1>
 436                                 <ul>
 437                                         <li>Using strange filetypes (ft=2html) may result in strange output.</li>
 438                                         <li>Other issues can be sent to the pileus.org
 439                                             <a href="$mailman">mailing list</a>.</li>
 440                                 </ul>
 441                         </div>
 442
 443                         <div class="box" id="uploads">
 444                                 <h1>Recent Uploads</h1>
 445                                 <ul>$(for upload in ${uploads[@]}; do
 446                                     echo -n "<li>"
 447                                     echo -n "<span class=\"upload\">$upload</span> "
 448                                     echo -n "<a href='$upload?raw'>text</a> "
 449                                     echo -n "<a href='$upload'>rainbow</a>"
 450                                     echo "</li>"
 451                                 done)
 452                                 </ul>
 453                                 <p><a href="ls">list all</a></p>
 454                                 <p><a href="head">sample all</a></p>
 455                                 <p><a href="stat">statistics</a></p>
 456                         </div>
 457                 </body>
 458         </html>
 459         EOF
 460 }
 461
 462 # Main
 463 PATH=/bin:/usr/bin
 464 url="http://$HTTP_HOST${REQUEST_URI/\?*}"
 465 pathinfo="${REQUEST_URI/*\/}"
 466 pathinfo="${pathinfo/\?*}"
 467
 468 if [ "$pathinfo" = ls ]; then
 469         do_cmd ls
 470 elif [ "$pathinfo" = head ]; then
 471         do_cmd head
 472 elif [ "$pathinfo" = stat ]; then
 473         do_cmd stat
 474 elif [ "$pathinfo" = view ]; then
 475         do_view
 476 elif [ "$pathinfo" ]; then
 477         do_print "$pathinfo"
 478 elif [ "$CONTENT_TYPE" ]; then
 479         do_upload
 480 else
 481         do_help
 482 fi