#!/usr/bin/perl

# Evolution wrapper script for Athena

# Performs the following Evolution customizations:
#   * Ensures $HOME/.evolution is private when created.
#   * Performs Hesiod lookup of user inbox.
#   * Pre-configures Evolution for MIT mail on first invocation.

use strict;
use Gnome2::GConf;

# Ensure $HOME/.evolution is private when created.
my $homedir = $ENV{"HOME"};
if ($homedir && ! -e "$homedir/.evolution") {
    if (mkdir("$homedir/.evolution")) {
	system("fs sa $homedir/.evolution system:anyuser none 2>/dev/null");
    }
}

# Look up user inbox in Hesiod.
my $user = $ENV{"USER"} || getpwuid($<);
my $result = `hesinfo $user pobox`;
my @fields = split(' ', $result);
my $server = $fields[1];

my $client = Gnome2::GConf::Client->get_default;
my $accounts = $client->get_list("/apps/evolution/mail/accounts");

if ($accounts) {
    # Update the server with the value from Hesiod.  Also convert
    # Athena 9.4-style Hesiod specifications (although it should be
    # unusual to see one due to debathena-gconf2-config).
    my $change = 0;
    foreach (@$accounts) {
	my $old = $_;
	if (/name="MIT mail"/) {
	    s|(imap://[^/]*\@)(po\d+\.mit\.edu)|\1$server|i;
	    s|(imap://[^/]*\@)_hesiod|\1$server|;
	}
	$change = 1 if ($_ ne $old);
    }

    if ($change) {
	$client->set_list("/apps/evolution/mail/accounts", "string",
			  $accounts);
    }
} else {
    # Pre-configuration.
    $client->set_string("/apps/evolution/calendar/display/timezone",
			"America/New_York");

    # To configure the accounts we need to know if we have krb4 support.
    my $provides = `dpkg-query -Wf '\${Provides}' 'libcamel*'`;
    my $krb4 = "";
    if ($provides =~ /debathena-libcamel-krb4/) {
	$krb4 = ";auth=KERBEROS_V4";
    }

    ($_, $_, $_, $_, $_, $_, my $gecos) = getpwuid($<);
    my @fields = split(",", $gecos);
    my $name = $fields[0];
    my $home = $ENV{"HOME"};
    my $local = "mbox:$home/.evolution/mail/local";
    my $a = '<?xml version="1.0"?>' . "\n";
    $a .= '<account name="MIT mail" uid="mitinitial" enabled="true">';
    $a .= '<identity>';
    $a .= "<name>$name</name>";
    $a .= "<addr-spec>$user\@mit.edu</addr-spec>";
    $a .= '</identity>';
    $a .= '<source save-passwd="false">';
    $a .= "<url>imap://$user$krb4\@$server/;use_ssl=always</url>";
    $a .= '</source>';
    $a .= '<transport save-passwd="false">';
    $a .= "<url>smtp://$user;auth=GSSAPI\@outgoing.mit.edu/;use_ssl=always";
    $a .= '</url>';
    $a .= '</transport>';
    $a .= "<drafts-folder>$local#Drafts</drafts-folder>";
    $a .= "<sent-folder>$local#Sent</sent-folder>";
    $a .= '</account>' . "\n";
    $accounts = [ $a ];
    $client->set_list("/apps/evolution/mail/accounts", "string", $accounts);
    $client->set_string("/apps/evolution/mail/default_account", "mitinitial");
}

exec("/usr/bin/evolution.debathena-orig", @ARGV);