Il risultato desiderato è il primo, ma, a quanto pare, non è sufficiente.
Lo temevo, gli stili devono essere tutti in linea negli elementi a cui sono relativi per scavalcare quelli delle interfacce webmail più diffuse.
Ho aggiunto l'opzione --inlinecss che, usando il modulo Python pynliner (http://pypi.python.org/pypi/pynliner): applica gli stili del CSS a tutti gli elementi inserendoli nell'attributo style (posizione con massima priorità).
Il fatto di aver dovuto utilizzare Python non mi esalta molto, ma quel modulo è quello che mi ha convinto maggiormente tre le opzioni che ho rintracciato in rete.
Se pynliner non risultasse disponibile nei repository è possibile installarlo con il comando easy_install pynliner (con diritti root, preferibilmente).#!/usr/local/bin/perl -w
#
# Nagios overnight/daily/weekly/monthly reporter
#
# Fetches Nagios report from web, processes HTML/CSS and emails to someone
# Written by Rob Moss, 2005-07-26, coding@mossko.com
# Little extension by Gimli, 2011-05-25
#
# Use at your own risk, knoweledge of perl required.
#
# Version 1.3.1
# - Overnight, Daily, Weekly, Monthly reports
# Version 1.3.1B
# - New option --inlinecss
#
use strict;
use Getopt::Long;
use Net::SMTP;
use LWP::UserAgent;
use Date::Manip;
my $mailhost = 'maiserver.domain.com'; # Fill these in!
my $maildomain = 'domain.com'; # Fill these in!
my $mailfrom = 'me@mycompany.com'; # Fill these in!
my $mailto = 'me@mycompany.com'; # Fill these in!
my $timeout = 30;
my $mailsubject = '';
my $mailbody = '';
my $logfile = '/usr/local/nagios/var/mail.log'; # Where would you like your logfile to live?
my $debug = 1; # Set the debug level to 1 or higher for information
my $type = '';
my $repdateprev;
my $reporturl;
my $nagssbody;
my $nagsssummary;
my $webuser = 'nagios'; # Set this to a read-only nagios user (not nagiosadmin!)
my $webpass = 'password'; # Set this to a read-only nagios user (not nagiosadmin!)
my $webbase = 'http://nagios-server.blah/nagios'; # Set this to the base of Nagios web page
my $webcssembed = 0;
my $webcssinline = 0;
GetOptions (
"debug=s" => \$debug,
"help" => \&help,
"type=s" => \$type,
"email=s" => \$mailto,
"embedcss" => \$webcssembed,
"inlinecss" => \$webcssinline,
);
if (not defined $type or $type eq "") {
help();
exit;
}
elsif ($type eq "overnight") {
report_overnight();
}
elsif ($type eq "daily") {
report_daily();
}
elsif ($type eq "weekly") {
report_weekly();
}
elsif ($type eq "monthly") {
report_monthly();
}
else {
die("Unknown report type $type\n");
}
debug(1,"reporturl: [$reporturl]");
$mailbody = http_request($reporturl);
if( $mailbody eq 0 ) {
exit 1;
}
# Remove HTML comments: avoid problems with Pynliner if $webcssinline == 1
$mailbody =~ s/<!--(.|\s)*?-->//g;
if ($webcssembed || $webcssinline) {
# --inlinecss depends on --embedcss
debug(1,"Embed CSS!");
# Stupid hacks for dodgy notes
$nagssbody = http_request("$webbase/stylesheets/summary.css");
if( $nagssbody eq 0 ) {
exit 1;
}
$nagsssummary = "<style type=\"text\/css\">\n";
foreach ( split(/\n/,$nagssbody) ) {
chomp;
if (not defined $_ or $_ eq "" ) {
next;
}
$nagsssummary .= "<!-- ";
$nagsssummary .= lc($_);
$nagsssummary .= " -->\n";
}
$nagsssummary .= "</style>\n";
$nagsssummary .= "<base href=\"$webbase/cgi-bin/\">\n";
$mailbody =~ s@<LINK REL=\'stylesheet\' TYPE=\'text/css\' HREF=\'/nagios/stylesheets/common.css\'>@@;
$mailbody =~ s@<LINK REL=\'stylesheet\' TYPE=\'text/css\' HREF=\'/nagios/stylesheets/summary.css\'>@$nagsssummary@;
}
my $output = "/tmp/nagios-report-htmlout.html";
open(FILE, "> $output") or warn "can't open file $output: $!\n";
if ($webcssinline) {
debug(1,"Inline CSS!");
close FILE;
chomp(my $Python = `which python`);
debug(1,"Inline CSS: python executable -> $Python");
if ( $Python eq "" ) {
debug(0,"Inline CSS: python executable not found!");
exit 1;
}
else {
# Escape some problematic characters
$mailbody =~ s/\n//g;
$mailbody =~ s/\r//g;
$mailbody =~ s/'/\\'/g;
$mailbody =~ s/"/\\"/g;
my $Script = "import pynliner; output = pynliner.fromString('$mailbody'); print(output);";
my $status = system "$Python -c \"$Script\" >$output";
if( $status != 0 ) {
debug(0,"Inline CSS: Python error.");
debug(0," Is Python module \"Pynliner\" installed?");
debug(0," http://pypi.python.org/pypi/pynliner");
}
}
}
else {
print FILE $mailbody;
close FILE;
}
sendmail();
###############################################################################
sub help {
print <<_END_;
Nagios web->email reporter program.
$0 <args>
--help
This screen
--email=<email>
Send to this address instead of the default address
"$mailto"
--type=overnight
Overnight report, from 17h last working day to Today (9am)
--type=daily
Daily report, 09:00 last working day to Today (9am)
--type=weekly
Weekly report, 9am 7 days ago, until 9am today (run at 9am friday!)
--type=monthly
Monthly report, 1st of prev month at 9am to last day of month, 9am
--embedcss
Downloads the CSS file and embeds it into the main HTML to enable
Lotus Notes to work (yet another reason to hate Notes)
--inlinecss
Downloads the CSS file and insert all the properties into inline
styles of the relative elements. This force all the webmails to not
override any CSS attribute.
-> Selects --embedcss.
-> Depends on Python and Python module Pynliner:
http://pypi.python.org/pypi/pynliner
_END_
exit 1;
}
###############################################################################
sub report_monthly {
# This should be run on the 1st of every month
$repdateprev = DateCalc("yesterday",1);
debug(1,"repdateprev = $repdateprev");
# #2006072116:48:37
my ($repsday, $repsmonth, $repsyear, $repshour ) = 0;
$repdateprev =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repsday = 01;
$repsmonth = $2;
$repsyear = $1;
$repshour = 0;
my ($repeday, $repemonth, $repeyear, $repehour ) = 0;
my $repdatenow = ParseDate("today");
debug(1,"repdatenow = $repdatenow");
$repdatenow =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repeday = $3;
$repemonth = $2;
$repeyear = $1;
$repehour = 0;
$reporturl = "$webbase/cgi-bin/summary.cgi?report=1&displaytype=1&timeperiod=custom" .
"&smon=$repsmonth&sday=$repsday&syear=$repsyear&shour=$repshour&smin=0&ssec=0" .
"&emon=$repemonth&eday=$repeday&eyear=$repeyear&ehour=$repehour&emin=0&esec=0" .
'&hostgroup=all&servicegroup=all&host=all&alerttypes=3&statetypes=2&hoststates=3&servicestates=56&limit=500';
$mailsubject = "Nagios alerts for month $repsmonth/$repsyear";
}
###############################################################################
sub report_weekly {
# This should be run on Friday, 9am
$repdateprev = Date_PrevWorkDay("today",5);
debug(1,"repdateprev = $repdateprev");
#2006072116:48:37
my ($repsday, $repsmonth, $repsyear, $repshour ) = 0;
$repdateprev =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repsday = $3;
$repsmonth = $2;
$repsyear = $1;
$repshour = 9;
my ($repeday, $repemonth, $repeyear, $repehour ) = 0;
my $repdatenow = ParseDate("today");
debug(1,"repdatenow = $repdatenow");
$repdatenow =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repeday = $3;
$repemonth = $2;
$repeyear = $1;
$repehour = 9;
$reporturl = "$webbase/cgi-bin/summary.cgi?report=1&displaytype=1&timeperiod=custom" .
"&smon=$repsmonth&sday=$repsday&syear=$repsyear&shour=$repshour&smin=0&ssec=0" .
"&emon=$repemonth&eday=$repeday&eyear=$repeyear&ehour=$repehour&emin=0&esec=0" .
'&hostgroup=all&servicegroup=all&host=all&alerttypes=3&statetypes=2&hoststates=3&servicestates=56&limit=500';
$mailsubject = "Nagios alerts for week ending $repsday/$repsmonth/$repsyear";
}
###############################################################################
sub report_daily {
$repdateprev = Date_PrevWorkDay("today",1);
debug(1,"repdateprev = $repdateprev");
#2006072116:48:37
my ($repsday, $repsmonth, $repsyear, $repshour ) = 0;
$repdateprev =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repsday = $3;
$repsmonth = $2;
$repsyear = $1;
$repshour = 7;
my ($repeday, $repemonth, $repeyear, $repehour ) = 0;
my $repdatenow = ParseDate("today");
debug(1,"repdatenow = $repdatenow");
$repdatenow =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repeday = $3;
$repemonth = $2;
$repeyear = $1;
$repehour = 7;
$reporturl = "$webbase/cgi-bin/summary.cgi?report=1&displaytype=1&timeperiod=custom" .
"&smon=$repsmonth&sday=$repsday&syear=$repsyear&shour=$repshour&smin=0&ssec=0" .
"&emon=$repemonth&eday=$repeday&eyear=$repeyear&ehour=$repehour&emin=0&esec=0" .
'&hostgroup=all&servicegroup=all&host=all&alerttypes=3&statetypes=2&hoststates=3&servicestates=56&limit=500';
$mailsubject = "Nagios alerts for 24 hours $repsday/$repsmonth/$repsyear ${repshour}h to present";
}
###############################################################################
sub report_overnight {
$repdateprev = Date_PrevWorkDay("today",1);
debug(1,"repdateprev = $repdateprev");
#2006072116:48:37
my ($repsday, $repsmonth, $repsyear, $repshour ) = 0;
$repdateprev =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repsday = $3;
$repsmonth = $2;
$repsyear = $1;
$repshour = 17;
my ($repeday, $repemonth, $repeyear, $repehour ) = 0;
my $repdatenow = ParseDate("today");
debug(1,"repdatenow = $repdatenow");
$repdatenow =~ /(\d\d\d\d)(\d\d)(\d\d)(.*)/;
$repeday = $3;
$repemonth = $2;
$repeyear = $1;
$repehour = 9;
$reporturl = "$webbase/cgi-bin/summary.cgi?report=1&displaytype=1&timeperiod=custom" .
"&smon=$repsmonth&sday=$repsday&syear=$repsyear&shour=$repshour&smin=0&ssec=0" .
"&emon=$repemonth&eday=$repeday&eyear=$repeyear&ehour=$repehour&emin=0&esec=0" .
'&hostgroup=all&servicegroup=all&host=all&alerttypes=3&statetypes=2&hoststates=3&servicestates=56&limit=500';
$mailsubject = "Nagios overnight alerts from $repsday/$repsmonth/$repsyear ${repshour}h to present";
}
###############################################################################
sub http_request {
my $ua;
my $req;
my $res;
my $geturl = shift;
if (not defined $geturl or $geturl eq "") {
warn "No URL defined for http_request\n";
return 0;
}
$ua = LWP::UserAgent->new;
$ua->agent("Nagios Report Generator " . $ua->agent);
$req = HTTP::Request->new(GET => $geturl);
$req->authorization_basic($webuser, $webpass);
$req->header( 'Accept' => 'text/html',
'Content_Base' => $webbase,
);
# send request
$res = $ua->request($req);
# check the outcome
if ($res->is_success) {
debug(1,"Retreived URL successfully");
return $res->decoded_content;
}
else {
print "Error: " . $res->status_line . "\n";
return 0;
}
}
###############################################################################
sub debug {
my ($lvl,$msg) = @_;
if ( defined $debug and $lvl <= $debug ) {
chomp($msg);
print localtime(time) .": $msg\n";
}
return 1;
}
#########################################################
sub sendmail {
my $smtp = Net::SMTP->new(
$mailhost,
Hello => $maildomain,
Timeout => $timeout,
Debug => $debug,
);
$smtp->mail($mailfrom);
$smtp->to($mailto);
$smtp->data();
$smtp->datasend("To: $mailto\n");
$smtp->datasend("From: $mailfrom\n");
$smtp->datasend("Subject: $mailsubject\n");
$smtp->datasend("MIME-Version: 1.0\n");
$smtp->datasend("Content-type: multipart/mixed; boundary=\"boundary\"\n");
$smtp->datasend("\n");
$smtp->datasend("This is a multi-part message in MIME format.\n");
$smtp->datasend("--boundary\n");
$smtp->datasend("Content-type: text/html\n");
$smtp->datasend("Content-Disposition: inline\n");
$smtp->datasend("Content-Description: Nagios report\n");
$smtp->datasend("$mailbody\n");
$smtp->datasend("--boundary\n");
$smtp->datasend("Content-type: text/plain\n");
$smtp->datasend("Please read the attatchment\n");
$smtp->datasend("--boundary--\n");
$smtp->dataend();
$smtp->quit;
}