user/ots-git-gpg-wrapper.sh

   1 #!/usr/bin/env bash
   2 # Desc: Wrapper for ots-git-gpg-wrapper
   3 # Note: Required because git's gpg.program option doesn't allow you to set
   4 #   command line options.
   5 # Usage: git -c gpg.program=<path to ots-git-gpg-wrapper.sh> commit -S
   6 # Input: file: $HOME/.local/share/ots/jsonrpc_url.txt  # first line is JSON RPC
   7 #          url for local bitcoin node containing login credentials. Example:
   8 #            http://user:35z8deadbeefhrdeadbeef5rk3@192.168.86.1:8332/
   9 # Depends: ots 0.7.0 (see https://github.com/opentimestamps/opentimestamps-client )
  10 # Version: 0.0.6
  11 # Ref/Attrib: [1] “How can I test if a particular alias is defined?”. https://unix.stackexchange.com/a/288513
  12 #             [2] “OpenTimestamps Git Integration”. (2016-10-13). https://github.com/opentimestamps/opentimestamps-client/blob/master/doc/git-integration.md
  13
  14 declare -a args calendars
  15
  16 # Specify default calendars
  17 calendars+=("https://finney.calendar.eternitywall.com");
  18 calendars+=("https://btc.calendar.catallaxy.com");
  19 calendars+=("https://alice.btc.calendar.opentimestamps.org");
  20 calendars+=("https://bob.btc.calendar.opentimestamps.org");
  21
  22 # Check if gpg is alias. See [1].
  23 if alias gpg 2>/dev/null; then
  24     ## Get gpg alias command
  25     gpg_cmd="$(type gpg)"; # get raw alias definition
  26     gpg_cmd="${gpg_cmd#*=\'}"; # trim chars before and including first apostrophe
  27     gpg_cmd="${gpg_cmd%\'*}"; # trim chars after and including last apostrophe
  28 else
  29     gpg_cmd="$(which gpg)";
  30 fi;
  31
  32 # Assemble args array
  33 ## Specify bitcoin node jsonrpc url if available
  34 path_jsonrpc_url="$HOME/.local/share/ots/jsonrpc_url.txt";
  35 if [[ -f "$path_jsonrpc_url" ]]; then
  36     jsonrpc_url="$(head -n1 "$path_jsonrpc_url")";
  37     args+=("--bitcoin-node");
  38     args+=("$jsonrpc_url");
  39 fi;
  40
  41 ## Pick random calendar
  42 ### Get calendars array size
  43 cal_size="${#calendars[@]}";
  44 cal_rnd_idx="$(shuf -i 1-"$cal_size" -n 1)";
  45 cal_rnd_idx="$((cal_rnd_idx - 1))"; # bash array is zero-indexed
  46 url_cal_random="${calendars[$cal_rnd_idx]}";
  47 args+=("--no-default-whitelist");
  48 args+=("--whitelist");
  49 args+=("$url_cal_random");
  50
  51 ## Specify '--gpg-program' option
  52 args+=("--gpg-program");
  53 args+=("$gpg_cmd");
  54
  55 ## Passthrough positional parameters
  56 args+=("--"); # mark end of ots-git-wrapper options
  57 for param in "$@"; do
  58     args+=("$param");
  59 done;
  60
  61 # Run command with args
  62 #   pseudocode: ots-git-gpg-wrapper $jsonrpc_option $calendar_option --gpg-program $gpg_cmd -- "$@"
  63 ots-git-gpg-wrapper "${args[@]}";