STL file reader to calculate volume, surface area and bounding box of 3D model ( .stl file)

Produce a script that can read binary .stl files to calculate the following parameters: bounding box (width, height, depth) surface area volume No UI design work required. You can find a script that runs a similar job on the client's computer on this site: www.3dprintingpricecheck.com. However, in our case we want the script to run server side, here is the flow: [login to view URL] page: 1.1 User selects unit of measure (inch, cm or mm) from a drop down and uploads .stl file 1.2 Data is posted to external script [login to view URL] script: 2.1 Calculate the following parameters of the .stl file in the selected unit (inch, cm or mm) and return the information to the "results page": bounding box (width, height, depth) surface area volume 2.2 Save the .stl file via sftp [login to view URL] page: 3.1 Display: bounding box (width, height, depth) surface area volume unit of measure (as selected by user on "upload page) file name of .stl file and URL of saved file