dokucp.sh

#!/usr/bin/env bash
# upload a file to neuropoly's wiki's filestore at https://www.neuro.polymtl.ca/lib/exe/mediamanager.php
# public domain
# author: nguenthe@uwaterloo.ca
# 
# TODO: be fully scp compatible: we should be able to specify the target filename, disambiguating between DESTs ending in / or not

set -eo pipefail  # crash on sub-errors; pipefail is a bashism, but sooo useful
set -u  # crash on missing vars

usage() {
   echo "NEUROPOLY_USERNAME=user NEUROPOLY_PASSWORD=pass $0 file [file2 file3 ...] dest"
   echo
   echo "dest is a folder path like datasets/mri"
}

if [ -z "${NEUROPOLY_USERNAME+x}" -o -z "${NEUROPOLY_PASSWORD+x}" ]; then
  echo "error: NEUROPOLY_USERNAME and NEUROPOLY_PASSWORD must be defined. These should be credentials for the wiki at https://www.neuro.polymtl.ca/." >&2
  exit 1
fi

if [ "$#" -lt 2 ]; then
  echo "error: not enough arguments" >&2
  usage
  exit 1
fi

DEST="${!#}"
set -- "${@:1:$(($#-1))}" # shift the path off https://stackoverflow.com/a/26163980

# at this point: "$@" is @FILES which has at least one element and DEST is the destination

namespace=$(echo "$DEST" | sed 's|/|:|g' | sed 's|:|%3A|g') # translate to namespace form, and urlencode it; TODO: use a more complete urlencoder.

# throw away credentials when we're done with them
trap 'rm -f cookies.txt' EXIT

# log in
# if the password is wrong, -f will make the script quit
curl -f -b cookies.txt -j -c cookies.txt -X POST 'https://www.neuro.polymtl.ca/home?do=login' --data-raw 'u='"${NEUROPOLY_USERNAME}"'&p='"${NEUROPOLY_PASSWORD}"

extract_sectokens() {
  # using [pup](https://github.com/ericchiang/pup): `go get https://github.com/ericchiang/pup; export PATH=~/go/bin:$PATH`
  #pup 'input[type=hidden][name=sectok] attr{value}'
  # or, this is almost equally good and avoids the dependency:
  egrep -o '<input type="hidden" name="sectok" value=".*" />' | awk -F " " '{print $4}' | awk -F "=" '{print $2}' | sed 's|"||g'
}

# get the CSRF token
sectok=$(curl -s -b cookies.txt https://www.neuro.polymtl.ca/lib/exe/mediamanager.php | extract_sectokens | head -n 1)

# upload the files
for file in "$@"; do
  curl -f -b cookies.txt -X POST 'https://www.neuro.polymtl.ca/lib/exe/ajax.php?call=mediaupload&ow=false''&'"sectok="${sectok}""'&'"ns=${namespace}"'&'"qqfile="$(basename "$file")"" --data-binary @"$file"
  # TODO: this returns json, either:
  # {"success":true,"link":...,"id":...,"ns":"downloads:sct"}
  # {"error": msg, "ns":"downloads:sct"}
  # integrate `jq` here to detect these cases and print something reasonable to stdout
  echo
done

# Alternately instead of Wiki credentials + `curl`, use {VPN,SSH,sudo} credentials + `scp`: 
#echo -n "$VPN_PASS" | sudo openconnect -b -u "$VPN_USER" --authgroup "$VPN_GROUP" --passwd-on-stdin ssl.vpn.polymtl.ca
#scp "$@" neuro@websv21.polymtl.ca:live/data/media/"${DEST}"
#<somehow auto-kill openconnect here>
# Maybe harder to get set up the first time but scp is probably reliable than some sketchy curl commands.