#!/bin/sh
# Sign files and upload them.

scriptversion=2009-02-17.10

# Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Originally written by Alexandre Duret-Lutz <adl@gnu.org>.

set -e

GPG='gpg --batch --no-tty'
to=
dry_run=
symlink_files=
delete_files=
delete_symlinks=
collect_var=
dbg=

usage="Usage: $0 [OPTIONS]... [COMMAND] FILES... [[COMMAND] FILES...]

Sign all FILES, and upload them to selected destinations, according to
<http://www.gnu.org/prep/maintain/html_node/Automated-FTP-Uploads.html>.

Commands:
  --delete                 delete FILES from destination
  --symlink                create symbolic links
  --rmsymlink              remove symbolic links
  --                       treat the remaining arguments as files to upload

Options:
  --help                   print this help text and exit
  --to DEST                specify one destination for FILES
                           (multiple --to options are allowed)
  --user NAME              sign with key NAME
  --symlink-regex[=SED-EXPR]  use SED-EXPR to create symbolic links
  --dry-run                do nothing, show what would have been done
  --version                output version information and exit

If --symlink-re is given without SED-EXPR, then the link target name
is created by replacing the version information with \`-latest', e.g.:

  foo-1.3.4.tar.gz -> foo-latest.tar.gz

Recognized destinations are:
  alpha.gnu.org:DIRECTORY
  savannah.gnu.org:DIRECTORY
  savannah.nongnu.org:DIRECTORY
  ftp.gnu.org:DIRECTORY
                           build directive files and upload files by FTP
  [user@]download.gnu.org.ua:{alpha|ftp}/DIRECTORY
                           build directive files and upload files by SFTP
  [user@]host:DIRECTORY    upload files with scp

If the file .gnupload exists in the current working directory, its contents
are prepended to the actual command line options.  Use this to keep your
defaults.  Comments (#) and empty lines in .gnupload are allowed.

Examples:
1. Upload automake-1.8.2b.tar.gz and automake-1.8.2b.tar.bz2 to two sites:
  gnupload --to sources.redhat.com:~ftp/pub/automake \\
           --to alpha.gnu.org:automake \\
           automake-1.8.2b.tar.gz automake-1.8.2b.tar.bz2

2. Same as above, but also create symbolic links to automake-latest.tar.*:
  gnupload --to sources.redhat.com:~ftp/pub/automake \\
           --to alpha.gnu.org:automake \\
	   --symlink-regex \\
           automake-1.8.2b.tar.gz automake-1.8.2b.tar.bz2

3. Symlink automake-1.8.2b.tar.gz to automake-latest.tar.gz and
automake-1.8.2b.tar.bz2 to automake-latest.tar.bz2 on both sites:

  gnupload --to sources.redhat.com:~ftp/pub/automake \\
           --to alpha.gnu.org:automake \\
	   --symlink automake-1.8.2b.tar.gz automake-latest.tar.gz \\
	             automake-1.8.2b.tar.bz2 automake-latest.tar.bz2

4. Delete automake-1.8.2a.tar.gz and .bz2, remove symlink
automake-latest.tar.gz and upload automake-1.8.2b.tar.gz:

  gnupload --to sources.redhat.com:~ftp/pub/automake \\
           --to alpha.gnu.org:automake \\
	   --delete automake-1.8.2a.tar.gz automake-1.8.2a.tar.bz2 \\
	   --rmsymlink automake-latest.tar.gz \\
	   -- \\
           automake-1.8.2b.tar.gz automake-1.8.2b.tar.bz2

Report bugs to <bug-automake@gnu.org>.
Send patches to <automake-patches@gnu.org>."

# Read local configuration file
if test -r .gnupload; then
  echo "$0: Reading configuration file .gnupload"
  eval set -- "`sed 's/#.*$//;/^$/d' .gnupload | tr '\012\015' ' '` $@"
fi

while test -n "$1"; do
  case $1 in
  -*) collect_var=
      case $1 in
        --help)
          echo "$usage"
          exit $?
          ;;
        --to)
          if test -z "$2"; then
            echo "$0: Missing argument for --to" 1>&2
            exit 1
          else
            to="$to $2"
            shift 2
          fi
          ;;
        --user)
          if test -z "$2"; then
            echo "$0: Missing argument for --user" 1>&2
            exit 1
          else
            GPG="$GPG --local-user $2"
            shift 2
          fi
          ;;
	--delete)
          collect_var=delete_files
          shift
          ;;
	--rmsymlink)
	  collect_var=delete_symlinks
	  shift
	  ;;
        --symlink-regex=*)
          symlink_expr=`expr "$1" : '[^=]*=\(.*\)'`
          shift
          ;;
        --symlink-regex)
          symlink_expr='s|-[0-9][0-9\.]*\(-[0-9][0-9]*\)\{0,1\}\.|-latest.|'
          shift
          ;;
        --symlink)
          collect_var=symlink_files
          shift
          ;;
        --dry-run|-n)
          dry_run=1
          shift
          ;;
        --version)
          echo "gnupload $scriptversion"
          exit $?
          ;;
	--)
	  shift
	  break
	  ;;
        -*)
          echo "$0: Unknown option \`$1', try \`$0 --help'" 1>&2
          exit 1
          ;;
      esac
      ;;
  *)  if test -z "$collect_var"; then
        break
      else
        eval $collect_var=\"\$$collect_var \"$1\"\"
	shift
      fi
      ;;
  esac
done

dprint()
{
  echo "Running $*..."
}

if test -n "$dry_run"; then
  dbg=dprint
fi

if test -z "$to"; then
  echo "$0: Missing destination sites" >&2
  exit 1
fi

if test -n "$symlink_files"; then
  x=`echo "$symlink_files" | sed 's/[^ ]//g;s/  //g'`
  if test -n "$x"; then
    echo "$0: Odd number of symlink arguments" >&2
    exit 1
  fi
fi

if test $# = 0; then
  if test -z "${symlink_files}${delete_files}${delete_symlinks}"; then
    echo "$0: No file to upload" 1>&2
    exit 1
  fi
else
  # Make sure all files exist.  We don't want to ask
  # for the passphrase if the script will fail.
  for file
  do
    if test ! -f $file; then
      echo "$0: Cannot find \`$file'" 1>&2
      exit 1
    elif test -n "$symlink_expr"; then
      linkname=`echo $file | sed "$symlink_expr"`
      if test -z "$linkname"; then
        echo "$0: symlink expression produces empty results" >&2
        exit 1
      elif test $linkname = $file; then
        echo "$0: symlink expression does not alter file name" >&2
        exit 1
      fi
    fi
  done
fi

# Make sure passphrase is not exported in the environment.
unset passphrase

# Reset PATH to be sure that echo is a built-in.  We will later use
# `echo $passphrase' to output the passphrase, so it is important that
# it is a built-in (third-party programs tend to appear in `ps'
# listings with their arguments...).
# Remember this script runs with `set -e', so if echo is not built-in
# it will exit now.
PATH=/empty echo -n "Enter GPG passphrase: "
stty -echo
read -r passphrase
stty echo
echo

if test $# -ne 0; then
  for file
  do
    echo "Signing $file..."
    rm -f $file.sig
    echo $passphrase | $GPG --passphrase-fd 0 -ba -o $file.sig $file
  done
fi

# mkdirective DESTDIR BASE FILE STMT
# Arguments: See upload, below
mkdirective() {
  stmt="$4"
  if test -n "$3"; then
    stmt="
filename: $3$stmt"
  fi

  cat >${2}.directive<<EOF
version: 1.1
directory: $1
comment: gnupload v. $scriptversion$stmt
EOF
  if test -n "$dry_run"; then
    echo "File ${2}.directive:"
    cat ${2}.directive
    echo "File ${2}.directive:" | sed 's/./-/g'
  fi
}

mksymlink() {
  while test $# -ne 0
  do
    echo "symlink: $1 $2"
    shift
    shift
  done
}

# upload DEST DESTDIR BASE FILE STMT FILES
# Arguments:
#  DEST     Destination site;
#  DESTDIR  Destination directory;
#  BASE     Base name for the directive file;
#  FILE     Name of the file to distribute (may be empty);
#  STMT     Additional statements for the directive file;
#  FILES    List of files to upload.
upload() {
  dest=$1
  destdir=$2
  base=$3
  file=$4
  stmt=$5
  files=$6

  rm -f $base.directive $base.directive.asc
  case $dest in
    alpha.gnu.org:*)
      mkdirective "$destdir" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      $dbg ncftpput ftp-upload.gnu.org /incoming/alpha $files $base.directive.asc
      ;;
    ftp.gnu.org:*)
      mkdirective "$destdir" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      $dbg ncftpput ftp-upload.gnu.org /incoming/ftp $files $base.directive.asc
      ;;
    gnupload-test.gnu.org.ua:*)
      mkdirective "${destdir#*/}" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      $dbg ncftpput gnupload-test.gnu.org.ua /incoming/${destdir%%/*} $files $base.directive.asc
      ;;
    localhost:*)
      mkdirective "$destdir" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      $dbg ncftpput localhost /incoming/ftp $files $base.directive.asc
      ;;
    savannah.gnu.org:*)
      if test -z "$files"; then
        echo "$0: warning: standalone directives not applicable for $dest" >&2
      fi
      $dbg ncftpput savannah.gnu.org /incoming/savannah/$destdir $files
      ;;
    savannah.nongnu.org:*)
      if test -z "$files"; then
        echo "$0: warning: standalone directives not applicable for $dest" >&2
      fi
      $dbg ncftpput savannah.nongnu.org /incoming/savannah/$destdir $files
      ;;
    download.gnu.org.ua:alpha/*|download.gnu.org.ua:ftp/*|download.gnu.org.ua:test/*)
      mkdirective "${destdir#*/}" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      for f in $files $base.directive.asc
      do
        echo put $f
      done | $dbg sftp -b - download.gnu.org.ua:/incoming/${destdir%%/*}
      ;;
    *@download.gnu.org.ua:alpha/*|*@download.gnu.org.ua:ftp/*|*@download.gnu.org.ua:test/*)
      user=${dest%%@*}
      mkdirective "${destdir#*/}" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      for f in $files $base.directive.asc
      do
        echo put $f
      done | $dbg sftp -b - ${user}@download.gnu.org.ua:/incoming/${destdir%%/*}
      ;;
    /*)
      mkdirective "$destdir" "$base" "$file" "$stmt"
      echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
      $dbg cp $files $base.directive.asc ${dest%%:*}
      ;;
    *)
      if test -z "$files"; then
        echo "$0: warning: standalone directives not applicable for $dest" >&2
      fi
      if test -n "$DESTDIR"; then
        mkdirective "$DESTDIR" "$base" "$file" "$stmt"
        echo "$passphrase" | $GPG --passphrase-fd 0 --clearsign $base.directive
        $dbg scp $files $base.directive.asc $dest
      else
        $dbg scp $files $dest
      fi
      ;;
  esac
  rm -f $base.directive $base.directive.asc
}

#####
# Process any standalone directives
stmt=
if test -n "$symlink_files"; then
  stmt="$stmt
`mksymlink $symlink_files`"
fi

for file in $delete_files
do
  stmt="$stmt
archive: $file"
done

for file in $delete_symlinks
do
  stmt="$stmt
rmsymlink: $file"
done

if test -n "$stmt"; then
  for dest in $to
  do
    destdir=`echo $dest | sed 's/[^:]*://'`
    upload "$dest" "$destdir" "`hostname`-$$" "" "$stmt"
  done
fi

# Process actual uploads
for dest in $to
do
  for file
  do
    echo "Uploading $file to $dest..."
    stmt=
    files="$file $file.sig"
    destdir=`echo $dest | sed 's/[^:]*://'`
    if test -n "$symlink_expr"; then
      linkname=`echo $file | sed "$symlink_expr"`
      stmt="$stmt
symlink: $file $linkname
symlink: $file.sig $linkname.sig"
    fi
    upload "$dest" "$destdir" "$file" "$file" "$stmt" "$files"
  done
done

# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End: