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#!/bin/sh
#----------------------------------------------------
# Author:       Florian "Bluewind" Pritz <flo@xssn.at>
# Contributor:  Moritz Wilhelmy
#
# Licensed under WTFPL v2
#   (see COPYING for full license text)
#
#----------------------------------------------------
# Dependencies: curl
# Optional: xclip
#----------------------------------------------------

VERSION="@VERSION@"

DELETE=
EXTENSION=""
GET=
TAR=
COMPRESS=0
TAREXT=".tar"
TAROPTS=""
PASTEBIN="http://paste.xinu.at"
WARNSIZE=10485760
USERAGENT="fb-client/$VERSION"
CLIPBOARD=""
EXITCODE=0

do_upload() {
  local EXTRA=""
  file="$1"
  basefilename="`basename -- "$file"`"
  basedirname="`dirname -- "$file"`"
  if [ -d "$file" ]; then
    cd "$basedirname"
    tar $TAROPTS -cf "$TMPDIR/$basefilename$TAREXT" -- "$basefilename"
    COMPRESS=0
    file="$TMPDIR/$basefilename$TAREXT"
  fi

  if [ "$COMPRESS" == "1" ]; then
    gzip -c -- "$file" > "$TMPDIR/$basefilename.gz"
    file="$TMPDIR/$basefilename.gz"
  elif [ "$COMPRESS" == "2" ]; then
    xz -c -- "$file" > "$TMPDIR/$basefilename.xz"
    file="$TMPDIR/$basefilename.xz"
  fi

  if [ "$EXTENSION" ]; then
    EXTRA="-F extension=$EXTENSION"
  fi
  TMPFILE=`mktemp "$TMPDIR/data.XXXXXX"`
  if [ `stat -c %s -- "$file"` -gt "$WARNSIZE" ]; then
    WARNSIZE=`curl -s "$PASTEBIN/file/get_max_size"`
    if [ `stat -c %s -- "$file"` -gt "$WARNSIZE" ]; then
      echo "Warning: Your upload is too big and would be rejected. Maximum size is: $WARNSIZE bytes. Skipping..." >&2
      EXITCODE=1
      return 1
    fi
  fi
  CURLOPTS="-# -n -L -A $USERAGENT $EXTRA"
  if [ `stat -c %s -- "$file"` -eq "0" ]; then
    if ! curl $CURLOPTS -F "file=@-;filename=$basefilename" "$PASTEBIN/file/do_upload" < "$file" > $TMPFILE; then
      EXITCODE=1
      return 1
    fi
  else
    if ! curl $CURLOPTS -F "file=@$file" "$PASTEBIN/file/do_upload" > $TMPFILE; then
      EXITCODE=1
      return 1
    fi
  fi
  sed '$d' $TMPFILE >&2
  URL=`tail -1 $TMPFILE`
  echo $URL
  CLIPBOARD="$CLIPBOARD $URL"
}

read_stdin() {
  if tty -s; then
    echo "^C to exit, ^D to send"
  fi
  cat > "$1"
}

help() {
  cat <<!
fb-client version $VERSION
usage: [cat |] `basename "$0"` [switches] [options] [<file(s)|ID(s)|folder(s)>]

  Upload/nopaste file(s)/stdin to paste.xinu.at and copy URL(s) to clipboard.
  ~/.netrc: machine paste.xinu.at password PASSWORD

  Switches:
    -d             delete the IDs
    -g             download the IDs and output on stdout (use with care!)
    -t             upload a tar file containing all files (and directories)
    -h             this help

  Options:
    These have no effect if used in conjunction with a switch
    -e <extension>   extension for default highlighting (e.g. "diff")
    -c             compress the file being uploaded with gz or xz if used 2 times
!
}

while getopts "e:gdhtcv" OPTION; do
  case $OPTION in
    e) EXTENSION="$OPTARG";;
    g) GET=1;;
    c) COMPRESS=`expr $COMPRESS + 1`
       if [ "$COMPRESS" == "1" ]; then
         TAROPTS="-z"
         TAREXT=".tar.gz"
       elif [ "$COMPRESS" == "2" ]; then
         TAROPTS="-J"
         TAREXT=".tar.xz"
       fi
       ;;
    t) TAR=1;;
    d) DELETE=1;;
    v) echo "$VERSION"; exit 0;;
    h|\?) help; exit 0;;
  esac
done

shift `expr $OPTIND - 1`


TMPDIR="`mktemp -d "/tmp/fb.XXXXXX"`"
trap "rm -rf '${TMPDIR}'" EXIT TERM

if [ $# -eq 0 ]; then
  read_stdin "$TMPDIR/stdin"
  do_upload "$TMPDIR/stdin"
else
  if [ "$TAR" ]; then
    tar $TAROPTS -cf "$TMPDIR/upload$TAREXT" -- "$@"
    COMPRESS=0
    do_upload "$TMPDIR/upload$TAREXT"
    break
  else
    for i in "$@"; do
      if [ "$DELETE" ]; then
        if ! curl -n -L -A $USERAGENT "$PASTEBIN/file/delete/$i"; then
          EXITCODE=1
        fi
      elif [ "$GET" ]; then
        if ! curl -s -o - -A $USERAGENT "$PASTEBIN/$i"; then
          EXITCODE=1
        fi
      elif echo "$i" | grep -qE "^(f|ht)tp(s)?://.+"; then
        cd $TMPDIR
        if ! curl -# -A $USERAGENT -O "$i"; then
          EXITCODE=1
          continue
        fi
        for f in *; do
          do_upload "$f" && rm -f -- "$f"
        done
      else
        do_upload "$i"
      fi
    done
  fi
fi

[ "`which xclip 2>/dev/null`" ] && echo -n $CLIPBOARD | nohup xclip >/dev/null 2>&1

exit $EXITCODE