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# Functions for checking for updates to packages from YUM, APT or some other
# update system.
BEGIN { push(@INC, ".."); };
eval "use WebminCore;";
&init_config();
&foreign_require("software", "software-lib.pl");
&foreign_require("cron", "cron-lib.pl");
&foreign_require("webmin", "webmin-lib.pl");
use Data::Dumper;
$available_cache_file = "$module_config_directory/available.cache";
$current_cache_file = "$module_config_directory/current.cache";
$updates_cache_file = "$module_config_directory/updates.cache";
$cron_cmd = "$module_config_directory/update.pl";
$yum_cache_file = "$module_config_directory/yumcache";
$apt_cache_file = "$module_config_directory/aptcache";
$yum_changelog_cache_dir = "$module_config_directory/yumchangelog";
# get_software_packages()
# Fills in software::packages with list of installed packages (if missing),
# returns count.
sub get_software_packages
{
if (!$get_software_packages_cache) {
%software::packages = ( );
$get_software_packages_cache = &software::list_packages();
}
return $get_software_packages_cache;
}
# list_current(nocache)
# Returns a list of packages and versions for installed software. Keys are :
# name - The my package name (ie. CSWapache2)
# update - Name used to refer to it by the updates system (ie. apache2)
# version - Version number
# epoch - Epoch part of the version
# desc - Human-readable description
sub list_current
{
my ($nocache) = @_;
if ($nocache || &cache_expired($current_cache_file)) {
my $n = &get_software_packages();
my @rv;
for(my $i=0; $i<$n; $i++) {
push(@rv, { 'name' => $software::packages{$i,'name'},
'update' => $software::packages{$i,'name'},
'version' =>
$software::packages{$i,'version'},
'epoch' =>
$software::packages{$i,'epoch'},
'desc' =>
$software::packages{$i,'desc'},
'system' => $software::update_system,
});
&fix_pkgadd_version($rv[$#rv]);
}
# Filter out dupes and sort by name
@rv = &filter_duplicates(\@rv);
&write_cache_file($current_cache_file, \@rv);
return @rv;
}
else {
return &read_cache_file($current_cache_file);
}
}
# list_available(nocache)
# Returns the names and versions of packages available from the update system
sub list_available
{
my ($nocache) = @_;
my $expired = &cache_expired($available_cache_file);
if ($nocache || $expired == 2 ||
$expired == 1 && !&check_available_lock()) {
# Get from update system
my @rv;
my @avail = &packages_available();
foreach my $avail (@avail) {
$avail->{'update'} = $avail->{'name'};
$avail->{'name'} = &csw_to_pkgadd($avail->{'name'});
push(@rv, $avail);
}
# Filter out dupes and sort by name
@rv = &filter_duplicates(\@rv);
if (!@rv) {
# Failed .. fall back to cache
@rv = &read_cache_file($available_cache_file);
}
&write_cache_file($available_cache_file, \@rv);
return @rv;
}
else {
return &read_cache_file($available_cache_file);
}
}
# check_available_lock()
# Returns 1 if the package update system is currently locked
sub check_available_lock
{
if ($software::update_system eq "yum") {
return &check_pid_file("/var/run/yum.pid");
}
return 0;
}
# filter_duplicates(&packages)
# Given a list of package structures, orders them by name and version number,
# and removes dupes with the same name
sub filter_duplicates
{
my ($pkgs) = @_;
my @rv = sort { $a->{'name'} cmp $b->{'name'} ||
&compare_versions($b, $a) } @$pkgs;
my %done;
return grep { !$done{$_->{'name'},$_->{'system'}}++ } @rv;
}
# cache_expired(file)
# Checks if some cache has expired. Returns 0 if OK, 1 if expired, 2 if
# totally missing.
sub cache_expired
{
my ($file) = @_;
my @st = stat($file);
return 2 if (!@st);
if (!$config{'cache_time'} || time()-$st[9] > $config{'cache_time'}*60*60) {
return 1;
}
return 0;
}
sub write_cache_file
{
my ($file, $arr) = @_;
&open_tempfile(FILE, ">$file");
&print_tempfile(FILE, Dumper($arr));
&close_tempfile(FILE);
$read_cache_file_cache{$file} = $arr;
}
# read_cache_file(file)
# Returns the contents of some cache file, as an array ref
sub read_cache_file
{
my ($file) = @_;
if (defined($read_cache_file_cache{$file})) {
return @{$read_cache_file_cache{$file}};
}
if (-r $file) {
do $file;
$read_cache_file_cache{$file} = $VAR1;
return @$VAR1;
}
return ( );
}
# compare_versions(&pkg1, &pk2)
# Returns -1 if the version of pkg1 is older than pkg2, 1 if newer, 0 if same.
sub compare_versions
{
my ($pkg1, $pkg2) = @_;
if ($pkg1->{'system'} eq 'webmin' && $pkg2->{'system'} eq 'webmin') {
# Webmin module version compares are always numeric
return $pkg1->{'version'} <=> $pkg2->{'version'};
}
my $ec = $pkg1->{'epoch'} <=> $pkg2->{'epoch'};
if ($ec && ($pkg1->{'epoch'} eq '' || $pkg2->{'epoch'} eq '') &&
$pkg1->{'system'} eq 'apt') {
# On some Debian systems, we don't have a my epoch
$ec = undef;
}
return $ec ||
&software::compare_versions($pkg1->{'version'}, $pkg2->{'version'});
}
sub find_cron_job
{
my @jobs = &cron::list_cron_jobs();
my ($job) = grep { $_->{'user'} eq 'root' &&
$_->{'command'} eq $cron_cmd } @jobs;
return $job;
}
# packages_available()
# Returns a list of all available packages, as hash references with name and
# version keys. These come from the APT, YUM or CSW update system, if available.
# If not, nothing is returned.
sub packages_available
{
if (@packages_available_cache) {
return @packages_available_cache;
}
if (defined(&software::update_system_available)) {
# From a decent package system
my @rv = software::update_system_available();
my %done;
foreach my $p (@rv) {
$p->{'system'} = $software::update_system;
$p->{'version'} =~ s/,REV=.*//i; # For CSW
if ($p->{'system'} eq 'apt' && !$p->{'source'}) {
$p->{'source'} =
$p->{'file'} =~ /virtualmin/i ? 'virtualmin' :
$p->{'file'} =~ /debian/i ? 'debian' :
$p->{'file'} =~ /ubuntu/i ? 'ubuntu' : undef;
}
$done{$p->{'name'}} = $p;
}
if ($software::update_system eq "yum" &&
&has_command("up2date")) {
# YUM is the package system select, but up2date is installed
# too (ie. RHEL). Fetch its packages too..
if (!$done_rhn_lib++) {
do "../software/rhn-lib.pl";
}
my @rhnrv = &update_system_available();
foreach my $p (@rhnrv) {
$p->{'system'} = "rhn";
my $d = $done{$p->{'name'}};
if ($d) {
# Seen already .. but is this better?
if (&compare_versions($p, $d) > 0) {
# Yes .. replace
@rv = grep { $_ ne $d } @rv;
push(@rv, $p);
$done{$p->{'name'}} = $p;
}
}
else {
push(@rv, $p);
$done{$p->{'name'}} = $p;
}
}
}
@packages_available_cache = @rv;
return @rv;
}
return ( );
}
sub supports_updates_available
{
return defined(&software::update_system_updates);
}
# updates_available(no-cache)
# Returns an array of hash refs of package updates available, according to
# the update system, with caching.
sub updates_available
{
my ($nocache) = @_;
if (!scalar(@updates_available_cache)) {
if ($nocache || &cache_expired($updates_cache_file)) {
# Get from original source
@updates_available_cache = &software::update_system_updates();
foreach my $a (@updates_available_cache) {
$a->{'update'} = $a->{'name'};
$a->{'system'} = $software::update_system;
}
&write_cache_file($updates_cache_file,
\@updates_available_cache);
}
else {
# Use on-disk cache
@updates_available_cache =
&read_cache_file($updates_cache_file);
}
}
return @updates_available_cache;
}
# package_install(package-name, [system])
# Install some package, either from an update system or from Webmin. Returns
# a list of updated package names.
sub package_install
{
my ($name, $system) = @_;
my @rv;
my $pkg;
# First get from list of updates
($pkg) = grep { $_->{'update'} eq $name &&
($_->{'system'} eq $system || !$system) }
sort { &compare_versions($b, $a) }
&list_possible_updates(0);
if (!$pkg) {
# Then try list of all available packages
($pkg) = grep { $_->{'update'} eq $name &&
($_->{'system'} eq $system || !$system) }
sort { &compare_versions($b, $a) }
&list_available(0);
}
if (!$pkg) {
print &text('update_efindpkg', $name),"<p>\n";
return ( );
}
if (defined(&software::update_system_install)) {
# Using some update system, like YUM or APT
&clean_environment();
if ($software::update_system eq $pkg->{'system'}) {
# Can use the default system
@rv = &software::update_system_install($name, undef, 1);
}
else {
# Another update system exists!! Use it..
if (!$done_rhn_lib++) {
do "../software/$pkg->{'system'}-lib.pl";
}
if (!$done_rhn_text++) {
%text = ( %text, %software::text );
}
@rv = &update_system_install($name, undef, 1);
}
&reset_environment();
}
else {
&error("Don't know how to install package $pkg->{'name'} with type $pkg->{'type'}");
}
# Flush installed cache
unlink($current_cache_file);
return @rv;
}
# package_install_multiple(&package-names, system)
# Install multiple packages, either from an update system or from Webmin.
# Returns a list of updated package names.
sub package_install_multiple
{
my ($names, $system) = @_;
my @rv;
my $pkg;
if (defined(&software::update_system_install)) {
# Using some update system, like YUM or APT
&clean_environment();
if ($software::update_system eq $system) {
# Can use the default system
@rv = &software::update_system_install(
join(" ", @$names), undef, 1);
}
else {
# Another update system exists!! Use it..
if (!$done_rhn_lib++) {
do "../software/$pkg->{'system'}-lib.pl";
}
if (!$done_rhn_text++) {
%text = ( %text, %software::text );
}
@rv = &update_system_install(join(" ", @$names), undef, 1);
}
&reset_environment();
}
else {
&error("Don't know how to install packages");
}
# Flush installed cache
unlink($current_cache_file);
return @rv;
}
# list_package_operations(package|packages, system)
# Given a package (or space-separate package list), returns a list of all
# dependencies that will be installed
sub list_package_operations
{
my ($name, $system) = @_;
if (defined(&software::update_system_operations)) {
my @rv = &software::update_system_operations($name);
foreach my $p (@rv) {
$p->{'system'} = $system;
}
return @rv;
}
return ( );
}
# list_possible_updates([nocache])
# Returns a list of updates that are available. Each element in the array
# is a hash ref containing a name, version, description and severity flag.
# Intended for calling from themes. Nocache 0=cache everything, 1=flush all
# caches, 2=flush only current
sub list_possible_updates
{
my ($nocache) = @_;
my @rv;
my @current = &list_current($nocache);
if (&supports_updates_available()) {
# Software module supplies a function that can list just packages
# that need updating
my %currentmap;
foreach my $c (@current) {
$currentmap{$c->{'name'},$c->{'system'}} ||= $c;
}
foreach my $a (&updates_available($nocache == 1)) {
my $c = $currentmap{$a->{'name'},$a->{'system'}};
next if (!$c);
next if ($a->{'version'} eq $c->{'version'});
push(@rv, { 'name' => $a->{'name'},
'update' => $a->{'update'},
'system' => $a->{'system'},
'version' => $a->{'version'},
'oldversion' => $c->{'version'},
'epoch' => $a->{'epoch'},
'oldepoch' => $c->{'epoch'},
'security' => $a->{'security'},
'source' => $a->{'source'},
'desc' => $c->{'desc'} || $a->{'desc'} });
}
}
else {
# Compute from current and available list
my @avail = &list_available($nocache == 1);
my %availmap;
foreach my $a (@avail) {
my $oa = $availmap{$a->{'name'},$a->{'system'}};
if (!$oa || &compare_versions($a, $oa) > 0) {
$availmap{$a->{'name'},$a->{'system'}} = $a;
}
}
foreach my $c (sort { $a->{'name'} cmp $b->{'name'} } @current) {
# Work out the status
my $a = $availmap{$c->{'name'},$c->{'system'}};
if ($a->{'version'} && &compare_versions($a, $c) > 0) {
# A regular update is available
push(@rv, { 'name' => $a->{'name'},
'update' => $a->{'update'},
'system' => $a->{'system'},
'version' => $a->{'version'},
'oldversion' => $c->{'version'},
'epoch' => $a->{'epoch'},
'oldepoch' => $c->{'epoch'},
'security' => $a->{'security'},
'source' => $a->{'source'},
'desc' => $c->{'desc'} || $a->{'desc'},
'severity' => 0 });
}
}
}
return @rv;
}
# list_possible_installs([nocache])
# Returns a list of packages that could be installed, but are not yet
sub list_possible_installs
{
my ($nocache) = @_;
my @rv;
my @current = &list_current($nocache);
my @avail = &list_available($nocache == 1);
foreach my $a (sort { $a->{'name'} cmp $b->{'name'} } @avail) {
($c) = grep { $_->{'name'} eq $a->{'name'} &&
$_->{'system'} eq $a->{'system'} } @current;
if (!$c && &installation_candiate($a)) {
push(@rv, { 'name' => $a->{'name'},
'update' => $a->{'update'},
'system' => $a->{'system'},
'version' => $a->{'version'},
'epoch' => $a->{'epoch'},
'desc' => $a->{'desc'},
'severity' => 0 });
}
}
return @rv;
}
# csw_to_pkgadd(package)
# On Solaris systems, convert a CSW package name like ap2_modphp5 to a
# real package name like CSWap2modphp5
sub csw_to_pkgadd
{
my ($pn) = @_;
if ($gconfig{'os_type'} eq 'solaris') {
$pn =~ s/[_\-]//g;
$pn = "CSW$pn";
}
return $pn;
}
# fix_pkgadd_version(&package)
# If this is Solaris and the package version is missing, we need to make
# a separate pkginfo call to get it.
sub fix_pkgadd_version
{
my ($pkg) = @_;
if ($gconfig{'os_type'} eq 'solaris') {
if (!$pkg->{'version'}) {
# Make an extra call to get the version
my @pinfo = &software::package_info($pkg->{'name'});
$pinfo[4] =~ s/,REV=.*//i;
$pkg->{'version'} = $pinfo[4];
}
else {
# Trip off the REV=
$pkg->{'version'} =~ s/,REV=.*//i;
}
}
$pkg->{'desc'} =~ s/^\Q$pkg->{'update'}\E\s+\-\s+//;
}
# installation_candiate(&package)
# Returns 1 if some package can be installed, even when it currently isn't.
# Always true for now.
sub installation_candiate
{
my ($p) = @_;
return 1;
}
# clear_repository_cache()
# Clear any YUM or APT caches
sub clear_repository_cache
{
if ($software::update_system eq "yum") {
&execute_command("yum clean all");
}
elsif ($software::update_system eq "apt") {
&execute_command("apt-get update");
}
elsif ($software::update_system eq "ports") {
&foreign_require("proc");
foreach my $cmd ("portsnap fetch",
"portsnap update || portsnap extract") {
my ($fh, $pid) = &proc::pty_process_exec($cmd);
while(<$fh>) { }
close($fh);
}
}
}
# split_epoch(version)
# Splits a version formatted like 5:x.yy into an epoch and real version
sub split_epoch
{
my ($ver) = @_;
if ($ver =~ /^(\d+):(\S+)$/) {
return ($1, $2);
}
return (undef, $ver);
}
# get_changelog(&pacakge)
# If possible, returns information about what has changed in some update
sub get_changelog
{
my ($pkg) = @_;
if ($pkg->{'system'} eq 'yum') {
# See if yum supports changelog
if (!defined($supports_yum_changelog)) {
my $out = &backquote_command("yum -h 2>&1 </dev/null");
$supports_yum_changelog = $out =~ /changelog/ ? 1 : 0;
}
return undef if (!$supports_yum_changelog);
# Check if we have this info cached
my $cfile = $yum_changelog_cache_dir."/".
$pkg->{'name'}."-".$pkg->{'version'};
my $cl = &read_file_contents($cfile);
if (!$cl) {
# Run it for this package and version
my $started = 0;
&open_execute_command(YUMCL, "yum changelog all ".
quotemeta($pkg->{'name'}), 1, 1);
while(<YUMCL>) {
s/\r|\n//g;
if (/^\Q$pkg->{'name'}-$pkg->{'version'}\E/) {
$started = 1;
}
elsif (/^==========/ || /^changelog stats/) {
$started = 0;
}
elsif ($started) {
$cl .= $_."\n";
}
}
close(YUMCL);
# Save the cache
if (!-d $yum_changelog_cache_dir) {
&make_dir($yum_changelog_cache_dir, 0700);
}
&open_tempfile(CACHE, ">$cfile");
&print_tempfile(CACHE, $cl);
&close_tempfile(CACHE);
}
return $cl;
}
return undef;
}
sub flush_package_caches
{
unlink($current_cache_file);
unlink($updates_cache_file);
unlink($available_cache_file);
unlink($available_cache_file.'0');
unlink($available_cache_file.'1');
@packages_available_cache = ( );
%read_cache_file_cache = ( );
}
# list_for_mode(mode, nocache)
# If not is 'updates' or 'security', return just updates. Othewise, return
# all available packages.
sub list_for_mode
{
my ($mode, $nocache) = @_;
return $mode eq 'updates' || $mode eq 'security' ?
&list_possible_updates($nocache) : &list_available($nocache);
}
# check_reboot_required(after-flag)
# Returns 1 if the package system thinks a reboot is needed
sub check_reboot_required
{
if ($gconfig{'os_type'} eq 'debian-linux') {
return -e "/var/run/reboot-required" ? 1 : 0;
}
return 0;
}
1;
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