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PGP sign posts on linux

  1. 2018-09-28 at 2:17 AM UTC
    #1
    apt Tuskegee Airman
    nigger
    The following users say it would be alright if the author of this post didn't die in a fire!
  2. 2018-09-28 at 2:51 AM UTC
    #2
    Lanny Bird of Courage
    Nice. Here's script for doing basically the same thing on OSX in case anyone cares, although it assumes you're using macvim it would probably be pretty easy to change it to a different editor:


    #!/usr/bin/env zsh

    PLAIN_TEMP=$(mktemp)
    CIPHR_TEMP=$(mktemp)
    EDITOR=/usr/local/Cellar/macvim/8.0-143/MacVim.app/Contents/bin/../MacOS/Vim
    declare -a EDITOR_ARGS=("-f" "-c" ":call English()")

    function usage {
      notify "Usage: $0 [--visual] file\nStarts editing of a file. Signs contents of the file in place after editor exits."
      exit 1
    }

    function notify {
      if [ $VISUAL_MODE -ne 0 ]; then
        osascript -e "tell app \"System Events\" to display alert \"$1\" with title \"Error\" as critical"
      else
        >&2 echo $1
      fi
    }

    function prompt {
      if [ 4 -gt "$#" ]; then
        title="Prompt"
        yes="Yes"
        no="No"
      else
        title=$2
        yes=$3
        no=$4
      fi

      if [ $VISUAL_MODE -ne 0 ]; then
        set -x
        ascript="tell app \"System Events\" to display dialog \"$1\" with title \"$title\" buttons{\"$yes\", \"$no\"} default button 1 cancel button 2"
        echo $ascript
        osascript -e $ascript #&> /dev/null
        response=$?
        return $(( response ^ 1 ))
      else
        echo -n "$1 [Y/n]"
        read answer
        if [ "$answer" != "${answer#[Nn]}" ] ;then
          return 0
        else
          return 1
        fi
      fi
    }

    # Transform long options to short ones
    for arg in "$@"; do
      shift
      case "$arg" in
        "--visual") set -- "$@" "-v" ;;
        "--prompt") set -- "$@" "-p" ;;
        *)        set -- "$@" "$arg"
      esac
    done

    # Default behavior
    VISUAL_MODE=0
    PROMPT_SIGN=0

    # Parse short options
    OPTIND=1
    while getopts "hvp" opt
    do
      case "$opt" in
        "h") usage; exit 0 ;;
        "v") VISUAL_MODE=1 ;;
        "p") PROMPT_SIGN=1 ;;
        "?") print_usage >&2; exit 1 ;;
      esac
    done
    shift $(expr $OPTIND - 1) 

    if [ -z "$1" ]; then
      notify "Missing file argument.\n"
      usage
      exit 1
    fi

    TARGET=$1

    if [ $VISUAL_MODE -ne 0 ]; then
      EDITOR_ARGS+=('-g')
      export PINENTRY_USER_DATA=""
    else
      # Force pinentry over terminal
      export PINENTRY_USER_DATA="USE_CURSES=1"
    fi


    $EDITOR $EDITOR_ARGS $TARGET
    editor_rc=$?
    if [ $editor_rc -ne 0 ]; then
      notify "Editor exited with status code: $editor_rc" 
      exit 2
    fi

    cp $TARGET $PLAIN_TEMP
    cp_rc=$?

    if [ $cp_rc -ne 0 ]; then
      notify "Failed to copy edited file to: $PLAIN_TEMP" 
      exit 3
    fi

    should_sign=1

    if [ $PROMPT_SIGN -ne 0 ]; then
      prompt "Should I sign you message? Refusing saves edits but does not sign." "Sign" "Sign" "Don't Sign"
      should_sign=$?
    fi

    if [ $should_sign -ne 0 ]; then
      gpg --clear-sign -u Lanny --batch --yes --output $CIPHR_TEMP $PLAIN_TEMP
      gpg_rc=$?

      if [ $gpg_rc -ne 0 ]; then
        notify "Signing failed. A temporary plaintext file is stored at: $PLAIN_TEMP"
        exit 4
      fi
      mv $CIPHR_TEMP $TARGET
    else
      mv $PLAIN_TEMP $TARGET
    fi

    exit 0

    The following users say it would be alright if the author of this post didn't die in a fire!
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