upload.sh

#!/bin/bash
# ./upload.sh file.pdf
filename="$1" 
cookiejar="cookiejar.txt"
username="username"
password="password"
fqdn="projectsend.domain.com"

echo "Uploading file $filename"

loginresponse=$(curl "https://$fqdn/process.php?do=login" \
	--cookie-jar $cookiejar \
  -H "authority: $fqdn" \
  -H "pragma: no-cache" \
  -H "cache-control: no-cache" \
  -H "accept: */*" \
  -H "x-requested-with: XMLHttpRequest" \
  -H "user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" \
  -H "content-type: application/x-www-form-urlencoded; charset=UTF-8" \
  -H "origin: https://$fqdn" \
  -H "sec-fetch-site: same-origin" \
  -H "sec-fetch-mode: cors" \
  -H "sec-fetch-dest: empty" \
  -H "referer: https://$fqdn/index.php" \
  -H "accept-language: en-US,en;q=0.9" \
  -X POST \
  --data-urlencode "do=login" \
  --data-urlencode "username=$username" \
  --data-urlencode "password=$password" \
  --data-urlencode "language=en")
  
uploadresponse=$(curl "https://$fqdn/process-upload.php" \
	--cookie $cookiejar \
  -H "authority: $fqdn" \
  -H "pragma: no-cache" \
  -H "cache-control: no-cache" \
  -H "upgrade-insecure-requests: 1" \
  -H "user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" \
  -H "accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9" \
  -H "sec-fetch-site: same-origin" \
  -H "sec-fetch-mode: navigate" \
  -H "sec-fetch-user: ?1" \
  -H "sec-fetch-dest: document" \
  -H "referer: https://$fqdn/upload-from-computer.php" \
  -H "accept-language: en-US,en;q=0.9" \
  -H "Content-Type: multipart/form-data" \
  -X POST \
  -F "name=$filename" \
  -F "file=@$filename")


echo "login reponse: $loginresponse"
echo "upload reponse: $uploadresponse"

newfilename=$(echo "$uploadresponse" | jq -r ".NewFileName")

echo "new file name: $newfilename"

submitreponse=$(curl "https://$fqdn/upload-process-form.php" \
	--cookie $cookiejar \
  -H "authority: $fqdn" \
  -H "pragma: no-cache" \
  -H "cache-control: no-cache" \
  -H "upgrade-insecure-requests: 1" \
  -H "user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36" \
  -H "accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9" \
  -H "sec-fetch-site: same-origin" \
  -H "sec-fetch-mode: navigate" \
  -H "sec-fetch-user: ?1" \
  -H "sec-fetch-dest: document" \
  -H "referer: https://$fqdn/upload-process-form.php" \
  -H "accept-language: en-US,en;q=0.9" \
  -H "Content-Type: application/x-www-form-urlencoded" \
    -X POST \
  --data-urlencode "finished_files[]=$newfilename" \
  --data-urlencode "file[1][original]=$newfilename" \
  --data-urlencode "file[1][file]=$filename" \
  --data-urlencode "file[1][name]=$filename" \
  --data-urlencode "file[1][description]=" \
  --data-urlencode "file[1][expiry_date]=" \
  --data-urlencode "file[1][public]=1" \
  --data-urlencode "upload_failed=" \
  --data-urlencode "submit=")
  
regex='data-id="(\w*)".*data-token="(\w*)"'

[[ $submitreponse =~ $regex ]]
dataid=$(echo ${BASH_REMATCH[1]})
datatoken=$(echo ${BASH_REMATCH[2]})

downloadurl="https://$fqdn/download.php?id=$dataid&token=$datatoken"

echo "Dataid: $dataid"
echo "Datatoken: $datatoken"
echo "Download url: $downloadurl"

rm -rf $cookiejar

exit 0

Usage:

./upload.sh yourfile.pdf