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#!/usr/local/bin/perl |
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# File: lwp-http.mon |
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# Author: Daniel Hagerty, hag@linnaean.org |
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# Date: Sun Mar 19 22:06:02 2000 |
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# Description: Perform a simple top level HTTP get using LWP. |
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# Lots of options. |
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# |
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# $Id: lwp-http.mon,v 1.3 2000/03/20 05:55:48 hag Exp $ |
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# |
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# 2002-09-02 Dobrica Pavlinusic <dpavlin@rot13.org> |
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# added option -o which will return success if ANY of server responded with |
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# success (so that you can ignore alerts if backup servers are working) |
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|
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use strict; |
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|
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use LWP::UserAgent; |
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use HTTP::Cookies; |
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use HTTP::Request; |
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use Getopt::Std; |
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use File::Basename; |
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use URI; |
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|
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### |
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|
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use vars qw($opt_h $opt_p $opt_t $opt_z $opt_d $opt_r $opt_s $opt_P |
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$opt_v $opt_c $opt_o); |
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|
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## |
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|
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# Configure this. |
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my $maintainer = 'youremailhere@localhost'; |
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|
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## |
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|
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my $port; |
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my $directory; |
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my $regex; |
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my $proto = "http"; |
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my $timeout = 60; |
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|
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my $version = "0.1"; |
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my $agent = "Yet Another Monitor Bot/$version"; |
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|
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my $u_proto; |
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|
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### |
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|
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sub main { |
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do_usage() if(@_ == 0); |
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|
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$directory = $opt_d if($opt_d); |
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$port = $opt_p if($opt_p); |
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$timeout = $opt_t if($opt_t); |
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$regex = $opt_r if($opt_r); |
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$proto = "https" if ($opt_s); |
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$proto = $opt_P if($opt_P); |
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|
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$directory =~ s/^\///; # Nuke leading slash |
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$u_proto = $proto; $u_proto =~ tr/[a-z]/[A-Z]/; |
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|
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my $user_agent = LWP::UserAgent->new() || lose("LWP create failure"); |
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$user_agent->agent($agent); |
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$user_agent->from($maintainer); |
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$user_agent->timeout($timeout); |
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|
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my @failed; |
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my @available; |
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my %failure; |
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host: |
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foreach my $host (@_) { |
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my $ht_lose = sub { |
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push(@failed, $host); |
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$failure{$host} = join(" ", @_); |
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|
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# This generates a warning. |
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next host; |
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}; |
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|
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if($opt_c) { |
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# Generate new cookies for each host. |
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my $cookies = HTTP::Cookies->new() || |
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&{$ht_lose}("HTTP::Cookies create failure"); |
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|
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$user_agent->cookie_jar($cookies); |
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} |
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|
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# XXX Kludge around some wierness with generating our own |
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# URI interacting with cookies. |
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my $uri_str = "$proto://$host/$directory"; |
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my $request = HTTP::Request->new("GET" => $uri_str) || |
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&{$ht_lose}("HTTP::Request create failure"); |
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my $uri = $request->uri(); |
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$uri->port($port) if(defined($port)); |
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|
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my $response = $user_agent->request($request) || |
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&{$ht_lose}("UserAgent request failure"); |
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|
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unless($response->is_success) { |
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&{$ht_lose}("Request failed:", $response->message); |
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} |
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|
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my $strref = $response->content_ref; |
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if(!$opt_z && length($$strref) == 0) { |
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&{$ht_lose}("Empty document"); |
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} |
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|
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if(defined($regex)) { |
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my $winning; |
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map {$winning++ if(/$regex/);} split("\n", $$strref); |
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if($opt_v) { |
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&{$ht_lose}("Failure regex matches:", $winning) if($winning); |
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} elsif(!$winning) { |
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&{$ht_lose}("Regex not found"); |
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} |
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} |
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push(@available, $host); |
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} |
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if(@failed) { |
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print "$u_proto Failures: " . join(" ", @failed) . "\n"; |
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foreach my $fail (@failed) { |
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print "$fail: $failure{$fail}\n"; |
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} |
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if ($opt_o && ($#available+1) > 0) { |
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print "$u_proto Available: ".join(" ", @available)."\n"; |
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} else { |
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exit(1); |
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} |
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} |
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exit; |
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} |
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|
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sub lose { |
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die join(" ", @_); |
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} |
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|
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sub do_usage { |
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my $extended = shift; |
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|
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my $base = basename $0; |
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print STDERR "Usage: $base [options...] hosts ...\n"; |
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if($extended) { |
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print <<'EOF'; |
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-h Help. You're reading it. |
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-d URL URL to test on the remote host. Default is /. |
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-p PORT Port to connect to. Default is proto specific. |
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-P PROTO Protocol to fetch. Default is http. |
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-s Fetch via https. Equivalent to -P https. |
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-t TIMEOUT Timeout for the fetch. Default is 60 seconds. |
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-r REGEX A regular expression that the retrieved content must match. |
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-v Invert the regular expression. Content must NOT match. |
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-z Supress zero-length check. |
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-c Enable Cookies. |
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-o Return success if at least One server is available. |
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EOF |
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} |
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exit 1; |
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} |
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|
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### |
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|
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getopts("hszvcp:t:d:r:P:o") || do_usage(); |
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do_usage($opt_h) if($opt_h); |
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|
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&main(@ARGV); |
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|
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# EOF |
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