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LAM986

LAM986

Programmer
Joined
Nov 4, 2009
Messages
15
Location
US
Hello,
Not sure if this is the correct forum for this question. Through my website, I need to allow a user to enter a number and open a corresponding .pdf. The .pdf name looks like 'TR-0433 72689 to 72864' and the user can enter a number anywhere between 72689 amd 72864. Can anyone direct me to a best method. I'm using Dreamweaver to create the website. Thank you in advance.
 
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Hi
[ul]
[li]Which programming languages are supported on your server ?[/li]
[li]Which programming languages you know ?[/li]
[/ul]
For example this could be one way of solving it with a [tt]bash[/tt] CGI script :
Code: 
[b]<form[/b] [maroon]action[/maroon][teal]=[/teal][green][i]"/cgi-bin/givemefile.sh"[/i][/green][b]>[/b]
File number : [b]<input[/b] [maroon]type[/maroon][teal]=[/teal][green][i]"text"[/i][/green] [maroon]name[/maroon][teal]=[/teal][green][i]"number"[/i][/green][b]>[/b]
[b]<input[/b] [maroon]type[/maroon][teal]=[/teal][green][i]"submit"[/i][/green] [maroon]value[/maroon][teal]=[/teal][green][i]"Give me that file"[/i][/green][b]>[/b]
[b]</form>[/b]
Code: 
[gray]#!/bin/bash[/gray]

[navy]minnumber[/navy][teal]=[/teal][green][i]'72689'[/i][/green]
[navy]maxnumber[/navy][teal]=[/teal][green][i]'72864'[/i][/green]
[navy]pdfdirectory[/navy][teal]=[/teal][green][i]'.'[/i][/green]
[navy]fileprefix[/navy][teal]=[/teal][green][i]'TR-0433 '[/i][/green]
[navy]filesuffix[/navy][teal]=[/teal][green][i]'.pdf'[/i][/green]

[teal][[[/teal] [green][i]"$QUERY_STRING"[/i][/green] [teal]=~[/teal] [navy]number[/navy][teal]=([[:[/teal]digit[teal]:]][/teal]{[purple]5[/purple]}[teal])[/teal] [teal]]][/teal] [teal]&&[/teal] [navy]number[/navy][teal]=[/teal][green][i]"${BASH_REMATCH[1]}"[/i][/green] [teal]||[/teal] [navy]number[/navy][teal]=[/teal][green][i]''[/i][/green]

[navy]name[/navy][teal]=[/teal][green][i]"$pdfdirectory/$fileprefix$number$filesuffix"[/i][/green]

[teal][[[/teal] [teal]![/teal] [green][i]"$number"[/i][/green] [teal]||[/teal] [green][i]"$number"[/i][/green] -lt [green][i]"$minnumber"[/i][/green] [teal]||[/teal] [green][i]"$number"[/i][/green] -gt [green][i]"$maxnumber"[/i][/green] [teal]||[/teal] [teal]![/teal] -f [green][i]"$name"[/i][/green] [teal]]][/teal] [teal]&&[/teal] {
  echo [green][i]$'Content-type: text/plain[/i][/green][lime][i]\r\n\r[/i][/lime][green][i]'[/i][/green]
  echo [green][i]"Invalid file number requested"[/i][/green]
  [COLOR=chocolate]exit[/color]
}

echo -e [green][i]"Content-type: application/octet-stream[/i][/green][lime][i]\r[/i][/lime]
[green][i]Content-disposition: attachment; filename=[/i][/green][lime][i]\"[/i][/lime][green][i]$name[/i][/green][lime][i]\"\r[/i][/lime]
[lime][i]\r[/i][/lime][green][i]"[/i][/green]

cat [green][i]"$name"[/i][/green]
Requires [tt]bash[/tt] version 4.0.0 or newer. Tested on Linux with Apache web server.


Feherke.
 
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CGI is definitely supported and .Net might also be available. I'm new to web development. Thank you for your help.
 
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Hi

Feherke said:
Which programming languages are supported on your server ?
Click to expand...
LAM986 said:
CGI is definitely supported
Click to expand...
Note that CGI is not a language.
Common Gateway Interface said:
The Common Gateway Interface (CGI) is a standard protocol that defines how webserver software can delegate the generation of [link ]webpages[/url] to a console application. Such applications are known as CGI scripts; they can be written in any programming language, although scripting languages are often used.
Click to expand...
( See the whole Common Gateway Interface article on Wikipedia. )

So my question is not answered yet.

Feherke.
 
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Okay, thanks for the CGI information. I have a better understanding. The languages the host supports is PHP and Perl. They have Linux servers. Does this help?
 
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Hi

LAM986 said:
The languages the host supports is PHP and Perl.
Click to expand...
[ul]
[li]Hosts usually not allow shell scripts as CGI, for security reasons. So probably you can not use my previous code.[/li]
[li]If you decide to use PHP and you have further questions, please post them in forum434.[/li]
[li]If you decide to use Perl, we can continue in this forum, or in forum219.[/li]
[/ul]
To help your decision, here are the PHP and Perl rewrites of the Bash script :
Code: 
[teal]<?php[/teal]

[navy]$minnumber[/navy][teal]=[/teal][purple]72689[/purple][teal];[/teal]
[navy]$maxnumber[/navy][teal]=[/teal][purple]72864[/purple][teal];[/teal]
[navy]$pdfdirectory[/navy][teal]=[/teal][green][i]'.'[/i][/green][teal];[/teal]
[navy]$fileprefix[/navy][teal]=[/teal][green][i]'TR-0433 '[/i][/green][teal];[/teal]
[navy]$filesuffix[/navy][teal]=[/teal][green][i]'.pdf'[/i][/green][teal];[/teal]

[b]if[/b] [teal]([/teal][COLOR=darkgoldenrod]is_numeric[/color][teal]([/teal][navy]$_GET[/navy][teal][[/teal][green][i]'number'[/i][/green][teal]]))[/teal] [navy]$number[/navy][teal]=[/teal][navy]$_GET[/navy][teal][[/teal][green][i]'number'[/i][/green][teal]];[/teal] [b]else[/b] [navy]$number[/navy][teal]=[/teal][green][i]''[/i][/green][teal];[/teal]

[navy]$name[/navy][teal]=[/teal][green][i]"$pdfdirectory/$fileprefix$number$filesuffix"[/i][/green][teal];[/teal]

[b]if[/b] [teal](![/teal] [navy]$number[/navy] [teal]||[/teal] [navy]$number[/navy][teal]<[/teal][navy]$minnumber[/navy] [teal]||[/teal] [navy]$number[/navy][teal]>[/teal][navy]$maxnumber[/navy] [teal]||[/teal] [teal]![/teal] [COLOR=darkgoldenrod]file_exists[/color][teal]([/teal][navy]$name[/navy][teal]))[/teal] [teal]{[/teal]
  [COLOR=darkgoldenrod]header[/color][teal]([/teal][green][i]'Content-type: text/plain'[/i][/green][teal]);[/teal]
  [b]echo[/b] [green][i]'Invalid file number requested'[/i][/green][teal];[/teal]
  [b]exit[/b][teal];[/teal]
[teal]}[/teal]

[COLOR=darkgoldenrod]header[/color][teal]([/teal][green][i]'Content-type: application/octet-stream'[/i][/green][teal]);[/teal]
[COLOR=darkgoldenrod]header[/color][teal]([/teal][green][i]"Content-disposition: attachment; filename=\"$fileprefix$number$filesuffix\""[/i][/green][teal]);[/teal]

[COLOR=darkgoldenrod]readfile[/color][teal]([/teal][navy]$name[/navy][teal]);[/teal]
Code: 
[gray]#!/usr/bin/perl -w[/gray]

[navy]$minnumber[/navy][teal]=[/teal][purple]72689[/purple][teal];[/teal]
[navy]$maxnumber[/navy][teal]=[/teal][purple]72864[/purple][teal];[/teal]
[navy]$pdfdirectory[/navy][teal]=[/teal][green][i]'.'[/i][/green][teal];[/teal]
[navy]$fileprefix[/navy][teal]=[/teal][green][i]'TR-0433 '[/i][/green][teal];[/teal]
[navy]$filesuffix[/navy][teal]=[/teal][green][i]'.pdf'[/i][/green][teal];[/teal]

[b]if[/b] [teal]([/teal][navy]$ENV[/navy][teal]{[/teal][green][i]'QUERY_STRING'[/i][/green][teal]}[/teal][teal]=~[/teal][green][i]/number=([[:digit:]]{5})/[/i][/green][teal])[/teal] [teal]{[/teal] [navy]$number[/navy][teal]=[/teal][navy]$1[/navy] [teal]}[/teal] [b]else[/b] [teal]{[/teal] [navy]$number[/navy][teal]=[/teal][green][i]''[/i][/green] [teal]}[/teal]

[navy]$name[/navy][teal]=[/teal][green][i]"$pdfdirectory/$fileprefix$number$filesuffix"[/i][/green][teal];[/teal]

[b]if[/b] [teal](![/teal] [navy]$number[/navy] [teal]||[/teal] [navy]$number[/navy][teal]<[/teal][navy]$minnumber[/navy] [teal]||[/teal] [navy]$number[/navy][teal]>[/teal][navy]$maxnumber[/navy] [teal]||[/teal] [teal]![/teal] [teal]-[/teal]f [navy]$name[/navy][teal])[/teal] [teal]{[/teal]
  [b]print[/b] [green][i]"Content-type: text/plain\r\n\r\n"[/i][/green][teal];[/teal]
  [b]print[/b] [green][i]'Invalid file number requested'[/i][/green][teal];[/teal]
  [b]exit[/b][teal];[/teal]
[teal]}[/teal]

[b]print[/b] [green][i]"Content-type: application/octet-stream\r
Content-disposition: attachment; filename=\"[navy]$fileprefix$number$filesuffix[/navy]\"\r
\r\n"[/i][/green][teal];[/teal]

[b]open[/b] FIL[teal],[/teal][green][i]"<$name"[/i][/green][teal];[/teal]
[b]print[/b] [b]while[/b] [teal]([/teal][green][i]<FIL>[/i][/green][teal]);[/teal]
[b]close[/b] FIL[teal];[/teal]
Note that I do not really like the [tt]CGI[/tt] Perl module, so I avoid it for simple tasks like this. In forum219 you will be firmly guided towards the use of [tt]CGI[/tt] module. If you decide to use Perl, make sure you know their points of view too.

Feherke.
 
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