PHP Upload Download Hub

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PHP Upload Download Hub

• A Group Project By
• Renée Puchalski
• Jonathan Xavier Ozovek

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Presentation Outline

• Introduction
• Explanation What is an Upload Download Hub?
• Testing the Script
• How does this Script Work?
• New Features
• The Result
• Conclusion

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I. Introduction

• The most common method of transferring files
  between two or more people are E-mail and FTP.
• These methods of file sharing due to their
  disadvantages can become one big pain in the
  neck.
• There is a method of transferring files that will
  both, save you time and allow for multiple people
  to store their files in one central location
  this method of file sharing can be achieved by
  using an Upload Download Hub.

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II. What is an Upload Download Hub?

• Allows your users to upload files to a given
  directory via a web browser
• Creates a list of all files uploaded so that
  they can be downloaded
• Features included file size limitation,
  extension limitation, and prevention of file
  overwriting

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III. Testing the Script

• In the same directory that we intended to upload
  the PHP Upload Download file, we created a
  directory called uploads with read, write, and
  execute permissions.
• Changed the settings for our server paths in the
  Upload Download script
• dl"http//www.cs.scranton.edu/rp6/web_prog/
  team_assign2/upDown/uploads/" //url where files
  are uploaded
• absolute_path"/users/student/rp6/public_html
  /web_prog/team_assign2/upDown/uploads/"
  //Absolute path to where files are uploaded
• Original Upload Download Hub in action

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IV. How does this Script Work?

• Original Upload Download Hub Script

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V. New Features

• IP Logger for Uploads
• E-mail Integration
• Dating of Uploaded Files
• Allowing Multiple Versions of One File to be
  Uploaded
• Security

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i. IP Logger

• Started by creating a text file named
  uploaded.txt, uploaded that to our servers, and
  gave permissions of read and write so the text
  files could be written to by an outside user.
  This file is also centralized on one directory
• Now the PHP script
• upload_log /xxxx/xxxx/uploaded.txt"
  
• visit date("m/d/Y His")
• ip getenv('REMOTE_ADDR')
• size sizeof(file)
• fp fopen("upload_log" , "a")
• fputs(fp, " visit \t ip \t
  file_name \t size\n")
• flock(fp, 2)
• fclose(fp)

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ii. E-mail Integration

• Informs us when a file has been uploaded and by
  whom. File is also centralized and has
  read/write access to outside users.
• Script that handles E-mail operation
• emailFile /xxx/xxx/webUpload.txt"
• OutHandle fopen (emailFile, "a")
• fputs(OutHandle, name."\n")
• fputs(OutHandle, file_name."\n")
• fputs(OutHandle, descr."\n")
• Body name."\n".file_name."\n".des
  cr
• descr preg_replace("/\n/", "ltbrgt",
  descr)
• fputs(OutHandle, descr."\n")
• fclose (OutHandle)
• Addl "From puchalskir2_at_scranton.edu
  \n"
• ."Reply-To
  puchalskir2_at_scranton.edu"
• mail ("puchalskir2_at_scranton.edu","Website
  Upload", Body, Addl)

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iii. Dating of Uploaded Files

• The date and time of when a file was uploaded is
  now displayed next to the file name in the
  download table. It is accomplished through
  saving upload dates and times through a text
  file, date.txt
• This text file is shared by both mirror hubs,
  which means that uploads by either site will
  write to same shared text file.

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iv. Allowing Multiple Versions of One File to be
Uploaded

• Script checks for same file being uploaded. If
  yes, it will add the new version via a number at
  the end of the name string.
• Here is the script for this new feature
• v 0
• if (file ! "")
• if (file_exists("absolute_path/file_name"))
• file_name2 "name"."_"."v"."_"."file_name"
  
• while(file_exists("absolute_path/file_name2")
  )
• file_name2 ""
• v
• file_name2 "name"."_"."v"."_"."file_name"
  
• file_name "name"."_"."v"."_"."file_name"
  

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v. Security Issues

• Limited access to our file sharing hub with
  .htaccess UNIX server security.
• The security link is consistent across both of
  our UNIX accounts.
• We have different .htaccess files, but we share
  the password and group files on one account.
• This security was achieved by changing the
  permissions of the directory of the group and
  password file to chmod 711.

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VI. The Result

• Upload_Download_Hub.phps
• Upload_Download_Hub.php
• Date text file
• Upload text file
• Email text file

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VII. Conclusion

• We have decided that the Upload Download Hub is
  the most efficient way to share files between two
  or more people. Hopefully, youve seen the
  benefits of such an implementation.
• This method of file sharing would be very
  important to businesses today as it saves you
  time and aggravation, and everyone in the
  business world knows that time is money.

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• ANY QUESTIONS?