Perl substr or similar help Post: 303025182

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Top Forums Shell Programming and Scripting Perl substr or similar help Post 303025182 by azdps on Friday 26th of October 2018 07:59:04 AM

10-26-2018

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From my OpenBSD firewall I use PERL to reboot my cable modem around 3:00 am. I do this daily to obtain a new IP from my ISP otherwise I end up with a static IP for weeks. The procedure I use:

Send modem GET command with username and password to login. (unable to send a POST only GET)
After login send GET command to get webpage (HTML) that contains the sessionKey.
Note: I parse this page using PERL to get the sessionKey. (token value)
Send POST command to modem with sessionKey and reboot command to reboot modem. (sessionKey is required)

PERL is installed in the base install of OpenBSD. So I use this along with PERL module HTTP::Tiny to achieve the above. I was using PERL module HTML::TokeParser::Simple to parse the webpage (HTML) from the GET command I send to obtain the sessionKey (token value) that I send in my POST command.

The reason I asked the question reference parsing the HTML using PERL is that by default HTML::TokeParser::Simple isn't installed on OpenBSD by default and I had to install that as a package. I was just trying to find another means.

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LEARN ABOUT PHP

strrchr

STRRCHR(3)								 1								STRRCHR(3)

strrchr - Find the last occurrence of a character in a string

SYNOPSIS

       string strrchr (string  $haystack, mixed  $needle)

DESCRIPTION

	This function returns the portion of $haystack which starts at the last occurrence of $needle and goes until the end of $haystack.

PARAMETERS

	      o $haystack
		- The string to search in

	      o $needle
		-  If  $needle	contains  more	than one character, only the first is used. This behavior is different from that of strstr(3).	If
		$needle is not a string, it is converted to an integer and applied as the ordinal value of a character.

RETURN VALUES

	This function returns the portion of string, or FALSE if $needle is not found.

CHANGELOG

       +--------+------------------------------------+
       |Version |				     |
       |	|				     |
       |	|	     Description	     |
       |	|				     |
       +--------+------------------------------------+
       | 4.3.0	|				     |
       |	|				     |
       |	|  This function is now binary safe. |
       |	|				     |
       +--------+------------------------------------+
EXAMPLES

       Example #1

	      strrchr(3) example

	      <?php
	      // get last directory in $PATH
	      $dir = substr(strrchr($PATH, ":"), 1);

	      // get everything after last newline
	      $text = "Line 1
Line 2
Line 3";
	      $last = substr(strrchr($text, 10), 1 );
	      ?>

NOTES

       Note

	      This function is binary-safe.

SEE ALSO

       strstr(3), strrpos(3).

PHP Documentation Group 														STRRCHR(3)