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#!/usr/bin/perl
#
# Copyright (C) 2005 Mandrakesoft
# Copyright (C) 2005,2006 Mandriva
# 
# Author: Florent Villard <warly@mandriva.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# compare and rebuild packages on different architecture
#
# TODO
#
# - use a cache (rpmctl cache for example) to find maintainer
# - add icecream compilation support
# - add a --group option to compile a set of packages (in progress)
# - add a function to update a packages when it obviously need to be recompile
# - Maybe call the function from the initial todo list (thus making the
#   argument ordering important)
# - Change the packager tag in the chroot to have the one who submit the package

use strict;
use RPM4::Header;
use Iurt::Config qw(config_usage get_date get_prefix config_init dump_cache_par get_maint check_arch %arch_comp get_package_prefix);
use Data::Dumper;
use URPM;
use Iurt::DKMS;

use Iurt::Urpmi;
use Iurt::Chroot qw(add_local_user create_temp_chroot remove_chroot create_build_chroot clean_chroot);
use Iurt::Process qw(perform_command kill_for_good sudo);
use Iurt::Mail qw(sendmail);
use Iurt::Util qw(plog_init plog);
use File::NCopy qw(copy);
use File::Path qw(mkpath);
use File::Spec::Functions qw(rel2abs);
use File::Basename qw(fileparse);
# I did not manage to make locks work over the network
#use File::lockf;
use Mkcd::Commandline qw(parseCommandLine usage);
use MDK::Common;
use Filesys::Df qw(df);
use POSIX;


# copied from drakx' standalone:
sub bug_handler {
    my ($error, $is_signal) = @_;

    # exceptions in eval are OK:
    return if $error && $^S && !$is_signal;

    # we want the full backtrace:
    $error .= "\n" if $is_signal;
    $error .= backtrace() if $error;

    warn "We got an uncatched exception:\n$error\n";
    #exit(1);
}

$SIG{SEGV} = sub { bug_handler(@_, 1) };
#$SIG{__DIE__} = \&bug_handler;
$SIG{TERM} = sub {
    warn "Got KILLED by SIGTERM at " . strftime("%c", localtime()) . " .\n";
    exit(1);
};

my $program_name = 'iurt2';

# sessing parameters
my $sudo = '/usr/bin/sudo';
my $arg = @ARGV;
my (@params, %run);
$run{program_name} = $program_name;
	
$run{todo} = [];
@params = ( 
    #    [ "one letter option", "long name option", "number of args (-X means ´at least X´)", "help text", "function to call", "log info"]
    #
    # no_rsync, config_help and copy_srpm kept for compatibility reasons
    #
    [ "", $program_name, 0, "[--cache] [--chrooted-urpmi <media prefix>] [--concurrent-run] [--config foo value] [--warn] [--verbose integer]
            [--copy-srpm] [--debug] [--distro] [--no-rsync] [--clean user1 user2 user3] [--clean-all] [--shell] [--stop {p|c|i|l|b|a|s}]
 	    [--use-system-distrib] [--dir] [--help foo?] [--log filename] [--group]
 	    [--upload [--markrelease] [--source]] [--dir] [--help foo?] [--log filename] [--status] [--ignore-failure]
	    [--repository <distribution path>]
	    [--rpmmacros <macro definition> [<macro definition>...]]
 	    {--config_help | --dkms {--media <media regexp>}
	    --chroot --arch {i586|x86_64|ppc} --distro {cooker|2006.0|community/2006.0|...} } |
 	    --build-user <user> --rebuild {cooker|2006.0|community/2006.0|...} {i586|x86_64|ppc|...} {filename1.src.rpm} {filename2.src.rpm} ... {filenamen.src.rpm} }", 
    "$program_name is a perl script to rebuild automatically several rpm in chroot, given a sourcerpm repository, and mail authors or rebuilder when problems occurs.

		e.g.: iurt --repository /dis/ -p foo\@foo.net -r cooker x86_64  /SRPMS/main/release/mkcd-4.2.5-1mdv2007.1.src.rpm", 
    sub { $arg or usage($program_name, \@params) }, "" ],
    [ "", "distro", 1, "<distro>", 
    "Set the distribution",
    sub { ($run{distro}) = @_; 1 }, "Setting the distribution" ],
    [ "", "dkms", [                                                                                                                                     
        ["", "dkms", 0, "",                                  
	"Set the DKMS rebuild mode",
        sub {    
            my ($tmp, @arg) = @_; 
            $tmp->[0] ||= {}; 
            push @$tmp, @arg; 
            1;
        }, "Setting auto mode arguments"], 
        ["k", "kmedia", 1, "<kernel media regexp>",  
        "Media Regexp to limit the kernel search to",  
        sub { my ($tmp, $kmedia) = @_; $tmp->[0]{kmedia} = $kmedia; 1 }, "Limiting rebuild to the kernel in the given media regexp"], 
        ["m", "media", 1, "<media regexp>",  
        "Media Regexp to limit rebuild to",  
        sub { my ($tmp, $media) = @_; $tmp->[0]{media} = $media; 1 }, "Limiting rebuild to the given media regexp"], 
        ["u", "umedia", 1, "<upload media>",
        "Media where rebuilt DKMS packages will be uploaded",
        sub { my ($tmp, $media) = @_; $tmp->[0]{umedia} = $media; 1 }, "Uploading rebuilt DKMS packages to the given media"], 
        ["v", "kversion", 1, "<kernel version>",
        "kernel for which DKMS packages should be rebuilt",
        sub { my ($tmp, $kversion) = @_; $tmp->[0]{kversion} = $kversion; 1 }, "Rebuilding only for given kernel version"],
        ["p", "package", 1, "<package>",
        "DKMS package which should be rebuilt",
        sub { my ($tmp, $package) = @_; $tmp->[0]{package} = $package; 1 }, "Rebuilding only given DKMS packages"],
], "[options]",  
    "Set the DKMS rebuild mode",
    sub { my ($opt) = @_; $run{dkms} = $opt; 1 }, "Running a DKMS rebuild run" ],
    [ "a", "arch", 1, "<architecture>", 
    "Set the architecture",
    sub { ($run{my_arch}) = @_; 1 }, "Setting architecture" ],
    [ "", "cache", 0, "", 
    "Use the global cache file",
    sub { $run{use_cache} = 1 }, "Activating cache use" ],
    [ "", "copy-srpm", 0, "", 
    "Copy also the regenerated SRPM",
    sub { $run{copy_srpm} = 1 }, "Activating the copy_srpm mode" ],
    [ "", "copy_srpm", 0, "", 
    "Copy also the regenerated SRPM",
    sub { $run{copy_srpm} = 1 }, "Activating the copy_srpm mode" ],
    [ "c", "chroot", 0, "", 
    "Check chroot and update it if needed",
    sub { $run{chroot} = 1 }, "Activating chroot updating" ],
    [ "", "chrooted-urpmi", [
        [ "", "chrooted-urpmi", 1, "",
	"Create urpmi media inside the chroot instead of using --root (media prefix is like http:///server.mandriva.com/dis/)",
	sub {
            my ($tmp, @arg) = @_; 
            $tmp->[0] ||= {}; 
            push @$tmp, @arg; 
            1;
	}, "Setting chrooted-urpmi options" ],
        ["m", "media", -1, "<media1> <media2> ... <median>",  
        "Media to add instead of --distrib",  
        sub { my ($tmp, @media) = @_; $tmp->[0]{media} = \@media; 1 }, "Limiting rebuild to the kernel in the given media regexp"], 
    ] , "[options] <media prefix>", 
    "Create urpmi media inside the chroot instead of using --root (media prefix is like http:///server.mandriva.com/dis/)",
    sub { my ($opt, $media) = @_; $opt->{rooted_media} = $media; $run{chrooted_urpmi} = $opt; 1 }, "Activating chroot media" ],
    [ "", "clean-all", 0, "", 
    "Clean all remaining chroots for all the users",
    sub { $run{clean_all} = 1 }, "Activating clean chroot flag" ],
    [ "", "clean", -1, "<user 1> <user 2> ... <user n>", 
    "Clean remaining chroot before runing",
    sub { $run{clean} = \@_ }, "Activating clean chroot flag" ],
    [ "", "concurrent-run", 0, "", 
    "Allow several iurt to run on different machines (slower)",
    sub { $run{concurrent_run} = 1 }, "Activating concurrent run checks" ],
    [ "d", "dir", -1, "", 
    "Directory where to find packages to rebuild", 
    sub { $run{extra_dir} = \@_; 1 }, "Adding extra source packages directories" ],
    [ "", "config", 2, "<configuration keyword> <value>", 
    "Override a configuration file variable",
    sub { my ($key, $value) = @_; $run{config}{$key} = $value }, "Overriding configuration variable" ],
    [ "", "config-help", 0, "", 
    "Explain configuration files keywords", 
    sub { $run{config_usage} = 1 }, "Activating debug mode" ],
    [ "", "config_help", 0, "", 
    "Explain configuration files keywords", 
    sub { $run{config_usage} = 1 }, "Activating debug mode" ],
    [ "", "debug", 0, "", 
    "Activate debug mode", 
    sub { $run{debug} = 1 }, "Activating debug mode" ],
    [ "g", "group", 0, "", 
    "Activate group mode, packages will be compiled as a global set, not as individual packages", 
    sub { $run{group} = 1 }, "Activating the group mode" ],
    [ "", "ignore-failure", 0, "", 
    "Do not take into account the failure cache, try to recompile all the packages not synchronized", 
    sub { $run{ignore_failure} = 1 }, "Activating the mode ignoring previous failure" ],
    [ "l", "log", 1, "<log file>", 
    "Log file.", 
    sub { 
	$run{log} = pop @_; 
	open my $log, ">$run{log}" or die "unable to open $run{log}\n";
	$run{logfd} = $log;
	print *$log, "command line: @ARGV\n";
	1;
    }, "Log file" ],
    [ "m", "media", -1, "<media 1> <media 2> ... <media 3>", 
    "Media to rebuild", 
    sub { ($run{media}) = @_; 1 }, "Adding a media to rebuild" ],
    [ "", "build-all", 0, "",
    "Build all packages of the media, even if they are up to date",
    sub { $run{build_all} = 1 }, "Setting the full build flag" ],
    [ "n", "no", 0, "", 
    "Perform all the check but do not compile anything", 
    sub { ($run{no_compile}) = 1 }, "Setting the no compilation flag" ],
    [ "p", "packager", 1, "<packager>", 
    "Use a specific packager",
    sub { ($run{packager}) = @_ }, 'Setting packager tag' ],
    [ "", "build-user", 1, "<user>", 
    "Use this username to build package",
    sub { ($run{user}) = @_ }, 'Setting build username' ],
    [ "r", "rebuild", -2, "<distro> <architecture> <srpm 1> <srpm 2> ... <srpm n>", 
    "Rebuild the packages, e.g. $program_name -r cooker x86_64 /home/foo/rpm/SRPMS/foo-2.3-12mdv2007.0.src.rpm", 
    sub { 
	$run{rebuild} = 1; 
	$run{distro} = shift @_;
       	$run{my_arch} = shift @_;

	foreach (@_) {
	    my ($path, $srpm);

	    unless (-f $_ && -r $_) {
		die "FATAL $program_name: $_ not a file or cannot be read\n";
	    }

	    ($srpm, $path) = fileparse(rel2abs($_));
	    $srpm =~ /\.src\.rpm$/ or die "FATAL: $_ doesn't look like an SRPM";

	    if (check_arch($_, $run{my_arch})) {
		plog('DEBUG', "force build for $2 (from $1)");
		push @{$run{todo}}, [ $path, $srpm, 1 ];
	    } else {
		plog("ERROR: $_ could not be build on $run{my_arch}, ignored.");
	    }
	}
	1;
	}, "Activating rebuild mode" ],
    [ "", "rpmmacros", -1, "<macro definition 1> .. <macro definition n>", 
    "Additional rpm macros to define",
    sub { $run{rpmmacros} = \@_ }, 'Setting rpm macros' ],
    [ "", "upload", [
	["", "upload", 0, "[options]", 
	"Upload the rebuild packages", 
	sub {   my ($tmp) = @_;
	    $tmp->[0] ||= {};
	    1;
	}, "Setting upload options"],
	[ "m", "markrelease", 0, "", 
	"Mark SVN directory when uploading the packages", 
	sub { $run{markrelease} = 1 }, "Adding markrelease repsys option" ],
	[ "s", "source", 0, "", 
	"Upload the source package as wells", 
	sub { $run{source_upload} = 1 }, "Setting source flag for upload" ],
    ], "[options]", 
    "Upload the rebuild packages", 
    sub { $run{upload} = 1 }, "Setting the upload flag" ],
    [ "", "use-old-chroot", 1, "<chroot path>", 
    "Use the given chroot as chroot (usefull for debugging)", 
    sub { ($run{use_old_chroot}) = @_ }, "Using given chroot" ],
    [ "", "no_rsync", 0, "", 
    "Do not send build log to the distant rsync server", 
    sub { $run{no_rsync} = 1 }, "Setting the no rsync warn flag" ],
    [ "", "delete-on-success", 0, "",
    "Don't keep generated packages and their logs",
    sub { $run{delete_on_success} = 1 }, "Setting the delete on success flag" ],
    [ "v", "verbose", 1, "<verbose level>", 
    "Give more info messages about what is going on (level from 1 to 10)", 
    sub { $run{verbose} = $_[0]; 1 }, "Setting verbose level" ],
    [ "w", "warn", 0, "", 
    "Warn maintainer of the packages about problem in the rebuild", 
    sub { $run{warn} = 1; 1 }, "Setting warn flag to warn maintainers" ],
    [ "", "shell", 0, "", 
    "Dump to a shell into the newly created chroot with sudo on rpm, urpmi, urpme and urpmi.addmedia", 
    sub { 
	($run{shell}) = 1; 
	1 }, "Setting option to dump to a shell" ],
    [ "", "stop", 1, "<rpm step>", 
    "Perform rpmbuild -b<rpm step> (p c i l b a s) instead of rpmbuild -ba and then open a shell in the chroot", 
    sub { 
	($run{stop}) = @_; 
	1;
    }, "Setting rpm build option" ],
    [ "", "repository", 1, "<distribution root path>",
    "Set a repository path if one is not created in the configuration file",
    sub {
	($run{repository}) = @_;
	1;
    } , "Setting the repository" ],
    [ "", "status", 1, "<mail>", 
    "Send a status mail to the provided mail address", 
    sub { 
	($run{status_mail}) = @_; 
	1;
    }, "Setting status mail option" ],
    [ "", "with", 1, "<flag>",
    "Use specified --with flag with rpm (can be used multiple times)",
    sub {
	$run{with_flags} .= " --with " . $_[0];
	1;
    }, "Adding specified extra --with parameter to rpm" ],
    [ "", "without", 1, "<flag>",
    "Use specified --without flag with rpm (can be used multiple times)",
    sub {
	$run{with_flags} .= " --without " . $_[0];
	1;
    }, "Adding specified extra --without parameter to rpm" ],
    # [ short option, long option, # of args, syntax description,
    #      action description, action, execution message ] 
    #############################
    [ "", "additional-media",
	[
	    [ "", "additional-media", 1, "",
		"Use additional medias (media prefix is like http:///server.mandriva.com/dis/)",
		sub {
		    my ($tmp, @arg) = @_; 
		    $tmp->[0] ||= {}; 
		    push @$tmp, @arg; 
		    1;
		}, "Setting additional medias options"
	    ],
	    [ "m", "media", -1, "<media1> <media2> ... <median>",
		"Media to add instead of --distrib",
		sub {
		    my ($tmp, @media) = @_;
		    $tmp->[0]{media} = \@media;
		    1;
		}, "Limiting rebuild to the kernel in the given media regexp"
	    ],
        ],
	"[options] <media prefix>", 
	"Also uses these medias (media prefix is like http:///server.mandriva.com/dis/)",
	sub {
	    my ($opt, $media) = @_;
	    $opt->{repository} = $media;
	    $run{additional_media} = $opt;
	    1;
	}, "Activating additional medias"
    ],
    ###############################
    [ "", "icecream", 1, "<procs>", 
    "Enables icecream usage by <procs> procs",
    sub {
	    $run{icecream} = $_[0];
    }, "Enabling icecream usage" ],
    ###############################
    [ "", "storage", 1, "[btrfs|tar]", 
    "Select how to store reference chroot",
    sub {
	    $run{storage} = $_[0];
    }, "Setting storage" ],
);

open(my $LOG, ">&STDERR");

plog_init($program_name, $run{logfd} || $LOG, 7, 1); # For parsing command line

# Display version information
#
(my $iurt_rev = '$Rev$') =~ s/.*: (\d+).*/$1/;
(my $iurt_aut = '$Author$') =~ s/.*: (..).*/$1/;
(my $iurt_dat = '$Date$') =~ s/.*: ([\d-]* [\d:]*) .*/$1/;
plog("MSG", "This is iurt2 revision $iurt_rev-$iurt_aut ($iurt_dat)");

my $todo = parseCommandLine($program_name, \@ARGV, \@params);
@ARGV and usage($program_name, \@params, "@ARGV, too many arguments");
foreach my $t (@$todo)  {
    plog('DEBUG', $t->[2]);
    &{$t->[0]}(@{$t->[1]}) or plog('ERROR', $t->[2]);
}

# Use the real verbose level
plog_init($program_name, $run{logfd} || $LOG, $run{verbose}, 1);

$run{distro_tag} = $run{distro};
$run{distro_tag} =~ s,/,-,g;

my $real_arch = `uname -m`;
chomp $real_arch;
my $HOME = $ENV{HOME};
my $configfile = "$HOME/.iurt.$run{distro_tag}.conf";
my $sysconfigfile = "/etc/iurt/build/$run{distro_tag}.conf";

my $config = {};
foreach my $f ($configfile, $sysconfigfile) {
    plog('DEBUG', "load config: $f");
    if (-f $f) {
        $config = eval(cat_($f))
          or die "FATAL $program_name: syntax error in $f";
        last;
    }
}

if ($run{repository}) {
    plog('DEBUG', "overriding configuration repository by the one given in the command line");
    $config->{repository} = $run{repository};
}

if (!$config->{repository}) {
    die "FATAL $program_name: no repository have been defined (use --repository to specify one on the command line";
}

my $urpmi = Iurt::Urpmi->new(run => \%run, config => $config, urpmi_options => "-v --no-verify-rpm --nolock --auto --no-suggests --ignoresize $config->{urpmi_options}");
$run{urpmi} = $urpmi;

if (!$run{chrooted_urpmi} && $run{group}) {
    die "FATAL $program_name: option --chrooted-urpmi is mandatory if --group is selected";
} 

my %config_usage = ( 
    admin => {
	desc => 'Mail of the administrator of packages builds',
	default => ''
    },
    all_media => {
	desc => 'List of known media',
	default => {
	    'main' => [ 'release' ],
	    'contrib' => [ 'release' ]
	}
    },
    base_media => {
	desc => 'List of base media used to build chroot',
	default => [ 'core/release' ],
    },
    basesystem_packages => {
	desc => 'List of packages needed for the chroot creation',
	default => [
	    'basesystem-minimal',
	    'rpm-build',
	    'sudo',
	    'urpmi',
	    'curl',
	]
    },
    btrfs_base => {
	desc => 'Where to create btrfs subvolumes',
	default => $HOME
    },
    build_timeout => {
	desc => 'Maximum build time after which the build process is terminated',
	default => {
	    default => 18000,
	},
    },
    cache_home => {
	desc => 'Where to store the cache files',
	default => "$HOME/.bugs"
    },
    cache_min_size => {
	desc => 'Minimal size to consider a cache file valid',
	default => 1000000
    },
    check_binary_file => {
	desc => 'Packages rebuild should be checked, however sometime rpm is segfaulting and the test is not correct',
	default => 0
    },
    iurt_root_command => {
	desc => 'Program to run sudo command',
	default => '/usr/sbin/iurt_root_command'
    },
    distribution => {
	desc => 'Name of the packages distribution',
	default => 'Mageia'
    },
    email_domain => {
	desc => 'Domain to append to usernames when sending emails',
	default => 'mageia.org'
    },
    home => {
	desc => 'Home dir',
	default => $HOME
    },
    local_home => {
	desc => 'Where to build packages',
	default => $HOME
    },
    local_upload => {
	desc => 'Where to store build packages and log',
	default => ''
    },
    local_spool => {
	desc => 'To override the directory where all the results are stored',
	default => ''
    },
    log_size_limit => {
	desc => 'Maximum authorized size for a log file',
	default => '100M'
    },
    log_size_date => {
	desc => 'Number of days log should be kept',
	default => '30'
    },
    log_url => {
	desc => 'Where the log can be seen',
	default => ''
    },
    max_command_retry => {
	"Maximum number of retry Iurt will perform for a given command",
	default => 20
    },
    no_mail  => {
	desc => 'Hash table with people mail address where we should not send any mails',
	default => {}
    },
    packager => {
	desc => 'Name of the build bot',
	default => 'Iurt'
    },
    prompt => { 
	desc => 'Default prompt in the chroot',
	default => qq(PS1='[\\[\\033[00;33m\\]iurt $run{distro}\\[\\033[00m\\]] \\[\\033[00;31m\\]\\u\\[\\033[00;32m\\]\\h\\[\\033[00m\\]\\w\$ '),
    },
    repository => {
	desc => 'Prefix of the repositories',
	default => ''
    },
    rsync_to => {
	desc => 'Server where the result of the builds should be rsynced (name@server:path format)',
	default => ''
    },
    sendmail => {
	desc => 'If the bot will send mail reports regarding build',
	default => 0
    },
    supported_arch => {
	desc => 'Table of supported architecture',
	default => ['i586', 'x86_64']
    },
    upload => {
	desc => 'Where to copy build packages',
	default => "$HOME/uploads/"
    },
    vendor => {
	desc => 'Name of the packages vendor',
	default => 'Mageia.Org'
    },
    additional_media => {
	desc => 'Additional medias to be used',
	default => []
    },
    icecream => {
	desc => 'Enabled icecream usage and uses N procs',
	default => 0
    },
);

# FIXME: missing parameters
config_usage() if $run{config_usage};
$run{my_arch} or usage($program_name, \@params, "no architecture given (media $run{media}, run{my_arch} $run{my_arch}, todo", join(', ', @{$run{todo}}));
if (!$arch_comp{$real_arch}{$run{my_arch}}) {
    die "FATAL $program_name: could not compile $run{my_arch} binaries on a $real_arch";
}
config_init(\%config_usage, $config, \%run);

$config->{upload} .= $run{distro};
$config->{upload} =~ s/community//g;
if ($run{distro} ne 'cooker') {
    if ($run{media} ne 'main') {
	$config->{upload} .= "/$run{media}";
    }
} elsif ($run{media} eq 'contrib') {
    $config->{upload} =~ s/cooker/contrib/g;
}

my $lock = $run{media};
if (!$lock && $run{chroot}) {
    $lock = 'chroot';
}
if (!$lock && $run{dkms}) {
    $lock = 'dkms';
}
$run{lock} = $lock;

# cache file name is needed early to remove the manual lock file if the
# lock mechanism does not work

mkpath $config->{cache_home};
my $cachefile = "$config->{cache_home}/iurt.$run{distro_tag}.$run{my_arch}.$lock.cache";
$run{cachefile} = $cachefile;
if (!$run{debug} && $run{media} || $run{chroot}) {
    $run{pidfile_home} = "$config->{cache_home}/";
    $run{pidfile} = "iurt.$run{distro_tag}.$run{my_arch}.$lock";
    check_pid(\%run);
}

$config->{local_upload} ||= $config->{local_home};
my $local_spool;
if ($config->{local_spool}) {
    $local_spool = $config->{local_spool};
} else {
    $local_spool = "$config->{local_upload}/iurt/$run{distro_tag}/$run{my_arch}/$run{media}/";
}

# Squash double slashes
$local_spool =~ s!/+!/!g;
#/

plog('INFO', "local spool: $local_spool");
if (!-d "$local_spool/log") {
    plog('DEBUG', "creating local spool $local_spool");
    mkpath("$local_spool/log")
	or die "FATAL: could not create local spool dir $local_spool ($!)";
}
$run{local_spool} = $local_spool;

my $cache;
my $clear_cache = 1;
if (-f $cachefile && $run{use_cache}) {
    plog('INFO', "loading cache file $cachefile");

    $cache = eval(cat_($cachefile))
	or plog('ERROR', "FATAL: could not load cache $cachefile ($!)");

    if (!$cache) {
	opendir my $cache_dir, $config->{cache_home};
	my $to_load;

	foreach my $file (readdir $cache_dir) {
	    (my $date) = $file =~ /iurt\.$run{distro_tag}\.$run{my_arch}\.$run{media}\.cache\.tmp\.(\d{8})/ or next;
	    if ($date > $to_load && -s "$config->{cache_home}/$file" > $config->{cache_min_size}) {
		$to_load = $date;
		$cachefile = "$config->{cache_home}/$file";
	    }
	}

	plog('NOTIFY', "loading alternate cache file $cachefile");
	$cache = eval(cat_($cachefile))
		or plog('ERROR', "FATAL: could not load cache $cachefile ($!)");
    }
    $clear_cache = 0 if $cache;
}

if ($clear_cache) {
    $cache = {
	rpm_srpm => {},
	failure => {},
	queue => {},
	warning => {},
	run => 1,
	needed => {},
    };
}
$run{cache} = $cache;

my (%srpm_version, @wrong_rpm, %provides, %pack_provide, $to_compile, %maint);
$to_compile = @{$run{todo}};
$to_compile += check_media(\%run, $cache, $config, \%srpm_version,
	\@wrong_rpm, \%provides, \%pack_provide, \%maint) if $run{media};
$to_compile += search_packages(1, $cache, \%provides, \%run, \%maint,
	\%srpm_version, @{$run{extra_dir}}) if $run{extra};

my $dkms;
if ($run{dkms}) {
    $dkms = Iurt::DKMS->new(run => \%run, config => $config);
    $to_compile += $dkms->search_dkms;
}
$run{to_compile} = $to_compile;

dump_cache_par(\%run);

plog("Packages to build: $to_compile");

my ($fulldate, $daydate) = get_date();
if ($run{use_cache}) {
    $run{run} = $cache->{run};
    $run{run} ||= 1;
    $cache->{run} = $run{run} + 1;
} else {
    $run{run} = "0.$fulldate";
}
$run{daydate} = $daydate;
plog('DEBUG', "using $run{run} as chroot extension");
$run{user} ||= $ENV{USER};
die "Iurt should not be executed as root.\n" if $run{user} eq "root";
$run{uid} = getpwnam $run{user};

plog('DEBUG', "using local user $run{user}, id $run{uid}");
my $luser = $run{user} || 'builder';

check_sudo_access()
    or die "FATAL: you need to have sudo access on $config->{iurt_root_command} to run $program_name\n";

my $debug_tag = $run{debug} && '_debug';
$run{debug_tag} = $debug_tag;

my (%done, $done);
$run{done} = \%done;
my $home = $config->{local_home};

my $chroot_base;
if ($run{storage} eq 'btrfs') {
    $chroot_base = $config->{btrfs_base};
} else {
    $chroot_base = $config->{local_home};
}
my ($chroot_name, $chroot_tmp, $chroot, $chroot_ref);
$chroot_name = "chroot_$run{distro_tag}$debug_tag.$run{my_arch}";
if (!$run{use_old_chroot}) {
    $chroot_tmp = "$chroot_base/chroot_tmp";

    if (!-d $chroot_tmp) {
	mkdir $chroot_tmp;
    } else {
	remove_chroot(\%run, $chroot_tmp, $chroot_name);
    }

    mkdir_p("$chroot_tmp/$run{user}");
    $chroot_tmp = "$chroot_tmp/$run{user}/$chroot_name.$run{run}";
    $run{chroot_tmp} = $chroot_tmp;

    $chroot = "$config->{local_home}/$chroot_name";
} else {
    plog(1, "using given chroot $run{use_old_chroot}");
    $chroot_tmp = $run{use_old_chroot};
    $chroot = $run{use_old_chroot};
}
$run{chroot_path} = $chroot;
if ($run{storage} eq 'btrfs') {
    $chroot_ref = "$chroot_base/$chroot_name";
} else {
    $chroot_ref = "$chroot_base/$chroot_name.tar.gz";
}
$run{chroot_ref} = $chroot_ref;
# 20061222 warly 
# even in use_old_chroot mode we create the chroot if it does not exist (useful 
# if the option is used for the first time
if ($run{chroot} || !-d "$chroot/dev") {
    create_build_chroot($chroot, $chroot_ref, \%run, $config) or die "FATAL $program_name: could not prepare initial chroot";
}

# now exit if there is nothing to do and it was just a cleaning pass
if ($run{no_compile} || !@{$run{todo}} && !$run{debug} && !$run{shell} && !$run{rebuild}) {
    send_status_mail(\%run, $config, $cache) if $run{status_mail};
    plog("no package to compile :(");
    unlink "$run{pidfile_home}/$run{pidfile}" if $run{pidfile};
    exit();
}

plog('DEBUG', "running with pid $$");
$run{prefix} = get_prefix($luser); 

my $df = df $home;
if ($df->{per} >= 99) {
    die "FATAL: not enough space on the filesystem, only $df->{bavail} KB on $home, full at $df->{per}%";
}

if ($run{shell}) {
    if (!$run{use_old_chroot}) {
	create_temp_chroot(\%run, $config, $chroot_tmp, $chroot_ref)
	    or die "FATAL $program_name: could not create temporary chroot";
    }
    add_local_user($chroot_tmp, \%run, $config, $luser, $run{uid}) or die "FATAL $program_name: could not add local user";

    #$urpmi->set_command($chroot_tmp);
    $urpmi->urpmi_command($chroot_tmp);

    $urpmi->install_packages('chroot', $chroot_tmp, $local_spool, \%pack_provide, 'configure', "[ADMIN] installation of urpmi and sudo failed in the chroot $run{my_arch}", { check => 1, maintainer => $config->{admin} }, 'urpmi', 'sudo') or die "FATAL $program_name: could not add urpmi and sudo in the chroot";
    add_sudoers($chroot_tmp, $luser);
    if ($run{shell}) {
	plog('NOTIFY', "dumping to a chrooted shell into $chroot_tmp");
	exec $sudo, $config->{iurt_root_command}, '--chroot', $chroot_tmp, '/bin/su', '-', $luser, '-c', "$config->{prompt} bash";
	die "FATAL $program_name: could not exec chroot to $chroot_tmp ($!)";
    }
}

# perform some cleaning before running to have some more space, rsync to
# the server too in case previous iurt crashed

if ($config->{rsync_to} && !$run{no_rsync}) { 
    	# remove some old and very big log files not to saturate the server
	system(qq(find $local_spool/log/ -name "*.log" \\( -size +$config->{log_size_limit} -or -mtime +$config->{log_size_date} \\) -exec rm -f {} \\;));
	system('rsync', '--delete', '-alHPe', 'ssh -xc arcfour', "$local_spool/log/", "$config->{rsync_to}/$run{distro_tag}/$run{my_arch}/$run{media}/log/");
}

if ($run{dkms} && $run{dkms_todo}) {
    $done += $dkms->dkms_compile($local_spool, $done);
}

# The next loop should be moved in a module someday

# FIXME: (tv) kill this dead code or use it!!
my $_s = sub { 
    if ($run{main}) {
	plog("dumping cache..."); 
	dump_cache_par(\%run);
	$Data::Dumper::Indent = 0;
	$Data::Dumper::Terse = 1;
	plog("Running environment:\n", Data::Dumper->Dump([\%run]), "\n");
	plog("Configuration:\n", Data::Dumper->Dump([$config]), "\n");
    }
    exit();
};
#$SIG{TERM} = $s;
#$SIG{INT} = $s;
$run{main} = 1;

my $rebuild;
$run{group} = 0 if @{$run{todo}} == 1;
if ($run{group}) { 
    $rebuild = 1;
    $urpmi->set_local_media($local_spool);
    $urpmi->order_packages(\%provides, $luser)
	or die "FATAL $program_name: could not order packages";
}
#
# The build loop
#
my $prev_done = $done;
do { 
    $rebuild = 0;
    $done = $prev_done;
    my $i;
    for ($i; $i < @{$run{todo}}; $i++) {
	my ($dir, $srpm, $status) = @{$run{todo}[$i]};
	
	# CM: Set argv[0] (in the C sense) to something we can easily spot and
	#     understand in process list
	$0 = "Iurt: $run{distro_tag} $run{my_arch} $run{media} $srpm";

	$status or next;
	$done{$srpm} and next;
	$done{$srpm} = 1;
	check_version(\%run, $srpm, \%srpm_version) or next;
	if ($run{debug}) { $run{debug}++ == 2 and exit() }
	$done++;
	plog('NOTIFY', "Build package $srpm [$done/$to_compile]");
	# When rebuilding all the media, src.rpm can be removed from mirror before we work on them
	unless (-f "$dir/$srpm") {
	    $cache->{failure}{$srpm} = 1;
	    $run{status}{$srpm} = 'missing';
	    dump_cache_par(\%run);
	    dump_status($local_spool, \%run);
	    next;
	} 
	# FIXME unfortunately urpmi stalls quite often
	my $retry = 0;
	 
	# current rpm is sometime segfaulting, and iurt is them blocked
	# and cannot 
	#
	# $cache->{failure}{$srpm} = 1;
	# dump_cache(\%run);
retry:
	$urpmi->clean_urpmi_process;
	
	if (!$run{use_old_chroot}) {
	    $chroot_tmp = create_temp_chroot(\%run, $config,
		$chroot_tmp, $chroot_ref) or next; 
	}

	if (!$urpmi->urpmi_command($chroot_tmp)) {
	    plog('DEBUG', "Creating chroot failed.\nCommand was: $chroot_tmp");
	    next;
	}
	$srpm =~ /(.*)-[^-]+-[^-]+\.src\.rpm$/ or next;
	my ($maintainer, $cc);
	if (!$run{warn}) {
	    ($maintainer) = get_maint(\%run, $srpm);
	    $cc = $maint{$srpm};#, maintainers\@mandriva.com";
	    chomp $maintainer;
	    if (!$maintainer || $maintainer eq 'NOT_FOUND') {
		$maintainer = $cc;
		#$cc = 'maintainers@mandriva.com'
	    }
	}
	#($maintainer, $cc) = ($config->{admin},'');

	plog('DEBUG', "creating user $luser in chroot");
	add_local_user($chroot_tmp, \%run, $config, $luser, $run{uid}) or next;

	my $old_srpm = $srpm;
	my ($ret, $spec);
	($ret, $srpm, $spec) = $urpmi->recreate_srpm(\%run, $config,
			$chroot_tmp, $dir, $srpm, $luser, $retry);
	if ($ret == -1) {
	    if (create_build_chroot($run{chroot_path}, $run{chroot_ref}, \%run,  $config)) {
		$retry = 1;
		goto retry;
	    } else {
		$ret = 0;
	    }
	} 
	if (!$ret) {
	    # CM: experimental: fail if we can't regenerate the srpm
	    #     This should eliminate bouncers that block the input queue 
	    #
	    $srpm = $old_srpm;
	    $cache->{failure}{$srpm} = 1;
	    $run{status}{$srpm} = 'recreate_srpm_failure';
	    dump_cache_par(\%run);
	    dump_status($local_spool, \%run);
	    next;
	} 

	(my $log_dirname = $srpm) =~ s/.*:(.*)\.src.rpm/$1/;
	my $log_dir = "$local_spool/log/$log_dirname/";

	# only create the log dir for the new srpm
	mkdir $log_dir;
	-d $log_dir or die "FATAL: could not create $log_dir (check permissions and group ownerships)";
	
	plog('INFO', "Install build dependencies");
	my $path_srpm = "$chroot_tmp/home/$luser/rpm/SRPMS/";
	
	# on x86_64 the rpm database is getting corrupted and sometimes
	# rpm do not found anymore installed packages, retrying several
	# time to be sure something is really broken

	my $ok = $urpmi->install_packages($srpm, $chroot_tmp, $local_spool, \%pack_provide, 'install_deps', "[REBUILD] install of build dependencies of $srpm failed on $run{my_arch}", { maintainer => $maintainer }, "$path_srpm/$srpm");
	if (!$ok) {
	    $run{status}{$srpm} ||= 'install_deps_failure';
	    next;
	}

	# try to workarround the rpm -qa db4 error(2) from dbcursor->c_get:
	# No such file or directory
	# system("sudo chroot $chroot_tmp rm -rf /var/lib/rpm/__db* &> /dev/null");
	# system("$sudo chroot $chroot_tmp rpm --rebuilddb &> /dev/null");

	perform_command("rpm --root $chroot_tmp -qa | sort", 
	    \%run, $config, $cache, 
	    logname => "rpm_qa", 
	    hash => "rpm_qa_$srpm", 
	    timeout => 60, 
	    debug_mail => $run{debug},
	    log => $log_dir); # or next; As this failed quite often, do not stop
	plog('NOTIFY', "Building $srpm");
	my $command = "rpmbuild --rebuild $run{with_flags} /home/$luser/rpm/SRPMS/$srpm";
	if ($run{stop}) {
	    $urpmi->install_packages('chroot', $chroot_tmp, $local_spool, \%pack_provide, 'configure', "[ADMIN] installation of urpmi and sudo failed in the chroot $run{my_arch}", { check => 1, maintainer => $config->{admin} }, 'urpmi', 'sudo');
	    add_sudoers($chroot_tmp, $luser);
	    $command = "rpmbuild -b$run{stop} /home/$luser/rpm/SPECS/$spec";
	}

	my ($srpm_name) = $srpm =~ /(?:.*:)?(.*)-[^-]+-[^-]+\.src\.rpm$/;
	my $icecream;
	if ($run{icecream}) {
	    $icecream = "RPM_BUILD_NCPUS=$run{icecream}";
	}

	if (!perform_command(qq(chroot $chroot_tmp /bin/su - $luser -c "TMP=/home/$luser/tmp/ $icecream $command"), 
		\%run, $config, $cache, 
		use_iurt_root_command => 1,
		mail => $maintainer, 
		error => "[REBUILD] $srpm from $run{distro_tag} does not build correctly on $run{my_arch}", 
		logname => "build", 
		hash => "build_$srpm", 
		timeout => $config->{build_timeout}{$srpm_name} || $config->{build_timeout}{default},
		srpm => $srpm,
		debug_mail => $run{debug},
		cc => $cc, 
		log => $log_dir, 
		error_regexp => 'rror.*ailed|Bad exit status|RPM build error',
		callback => sub { 
		    my ($opt, $output) = @_;
		    if ($run{stop}) {
			plog("dumping to a chrooted shell into $chroot_tmp (pid $$)");
			# exec does not work because it seems stdin and out are shared between children
			system($sudo, $config->{iurt_root_command}, '--chroot', $chroot_tmp, '/bin/su', '-', $luser, '-c', "$config->{prompt} bash");
			exit();
		    }
		    plog('DEBUG', "calling callback for $opt->{hash}");
		    if ($output =~ m!/bin/ld: cannot find -l(\S*)|configure.*error.* (?:-l(\S+)|(\S+) includes)!) {
			my $missing = $1;
			my @rpm = find_provides(\%pack_provide, $missing);
			plog(5, "likely @rpm ($missing-devel) needed to rebuilt $srpm is not in build_requires");
			if ($maintainer ne 'NOT_FOUND') {
			    $opt->{mail} = $maintainer;
			    #$opt->{mail} .= ", other_maint";
			}
			if (!$opt->{mail}) { 
			    $opt->{mail} = "Maintainer not found <$config->{admin}>";
			}
			if (@rpm > 1) {
			    $opt->{error} = "[MISSING_BUILD_REQUIRES_TAG] one of @rpm ($missing-devel), needed to build $srpm, is not in buildrequires";
			} elsif (@rpm == 1) {
			    $opt->{error} = "[MISSING_BUILD_REQUIRES_TAG] @rpm ($missing-devel), needed to build $srpm, is not in buildrequires";
			} else {
			    $opt->{error} = "[MISSING_BUILD_REQUIRES_TAG] $missing-devel, needed to build $srpm, is not in buildrequires";
			}
			$cache->{buildrequires}{$srpm}{$missing} = \@rpm;
			return;
		    }
		    1;
		}, 
		freq => 1)) {

	    $cache->{failure}{$srpm} = 1;
	    $run{status}{$srpm} = 'build_failure';
	    # 20060615
	    dump_cache_par(\%run);
	    dump_status($local_spool, \%run);
	    next;
	}

	# do some cleaning if the compilation is successful
	delete $cache->{needed}{$srpm} if defined $cache->{needed}{$srpm};
	delete $cache->{buildrequires}{$srpm} if defined $cache->{buildrequires}{$srpm};
	# FIXME It seems the glob is not correctly expanded any more, so listing the directory content to do so
	opendir my $binfh, "$chroot_tmp/home/$luser/rpm/RPMS/";
	my @packages;
	foreach my $bindir (readdir $binfh) {
	    -d "$chroot_tmp/home/$luser/rpm/RPMS/$bindir" or next;
	    opendir my $rpmfh, "$chroot_tmp/home/$luser/rpm/RPMS/$bindir";
	    push @packages, map { "$chroot_tmp/home/$luser/rpm/RPMS/$bindir/$_" } grep { !/src\.rpm$/ && /\.rpm$/ } readdir $rpmfh;
	}

	# 20060810 warly We should fail here, but rpm is currently
	# segfaulting when trying to install packages

	if ($config->{check_binary_file}) {
	    $urpmi->install_packages($srpm, $chroot_tmp, $local_spool, \%pack_provide, 'binary_test', "[REBUILD] binaries packages generated from $srpm do not install correctly", { maintainer => $maintainer } ,@packages) or next;
	} else  {
	    my $successfile = "$local_spool/log/$srpm/binary_test_$srpm-1.log";
	    open my $f, ">$successfile";
	    print $f "$srpm build ok";
	}
	
	$run{status}{$srpm} = 'ok';
	delete $cache->{failure}{$srpm} if defined $cache->{failure}{$srpm};
	if ($run{debug}) {
	    plog("debug mode, skip other packages");
	    exit();
	} elsif ($run{group}) {
	    # we should not move the package until they are all compiled
	    plog("group mode, keep packages for local media ($srpm is done $done)");
	    $run{done}{$srpm} = $done;
	    $urpmi->add_to_local_media($chroot_tmp, $srpm, $luser);
	} else { 
	    # drop packages and logs if we only want failure logs
	    if ($run{delete_on_success}) {
		system("rm -rf $local_spool/log/$srpm/");
	    } else {
		plog('OK', "build successful, copying packages to $local_spool.");

		system("cp $chroot_tmp/home/$luser/rpm/RPMS/*/*.rpm $local_spool &>/dev/null") and plog('ERROR', "ERROR: could not copy rpm files from $chroot_tmp/home/$luser/rpm/RPMS/ to $local_spool ($!)");
	    }

	    if ($run{copy_srpm}) {
		# replace the old srpm
		unlink "$local_spool/$old_srpm";

		system("cp $chroot_tmp/home/$luser/rpm/SRPMS/$srpm $local_spool &>/dev/null") and plog('ERROR', "ERROR: could not copy $srpm from $chroot_tmp/home/$luser/rpm/SRPMS/ to $local_spool ($!)");
	    }
	    process_queue($config, \%run, \@wrong_rpm, 1);
	}
	# dymp_cache each time so that concurrent process can get updated
	dump_cache_par(\%run) if $run{concurrent_run};
    }
    if ($run{group}) {
	my $i;
	for ($i; $i < @{$run{todo}}; $i++) {
	    my (undef, $srpm) = @{$run{todo}[$i]};
	    if (!$run{done}{$srpm}) {
		$rebuild = $urpmi->order_packages(\%provides, $luser);
		last;
	    }
	}
	if ($prev_done == $done) {
	    $rebuild = 0;
	    if ($done == @{$run{todo}}) {
		plog('OK', "all packages succesfully compiled, copying packages to $local_spool.");
		system("cp $chroot_tmp/home/$luser/rpm/RPMS/*/*.rpm $local_spool &>/dev/null") and plog('ERROR', "ERROR: could not copy rpm files from $chroot_tmp/home/$luser/rpm/RPMS/ to $local_spool ($!)");
		if ($run{copy_srpm}) {
		    system("cp $chroot_tmp/home/$luser/rpm/SRPMS/*.src.rpm $local_spool &>/dev/null") and plog('ERROR', "ERROR: could not copy SRPMS from $chroot_tmp/home/$luser/rpm/SRPMS/ to $local_spool ($!)");
		}
	    } else {
		plog('FAIL', "some packages could not be compiled.");
	    }
	}
    }
} while $rebuild;

if (!$run{debug} && !$run{use_old_chroot}) {
    clean_chroot($chroot_tmp, $chroot_ref, \%run, $config, 1);
}
plog("reprocess generated packages queue");
process_queue($config, \%run, \@wrong_rpm);

dump_cache_par(\%run);

plog('FAIL', "ERROR: RPM with a wrong SRPM name") if @wrong_rpm;
if (@wrong_rpm && open my $file, ">$local_spool/log/wrong_srpm_names.log") {
    foreach (@wrong_rpm) {
	print $file "$_->[1] -> $_->[0] (", $cache->{rpm_srpm}{$_->[1]}, ")\n";
    }
}

dump_status($local_spool, \%run);

send_status_mail(\%run, $config, $cache) if $run{status_mail};

if ($config->{rsync_to} && !$run{no_rsync}) { 
    	# remove some old and very big log files not to saturate the server
	system(qq(find $local_spool/log/ -name "*.log" \\( -size +$config->{log_size_limit} -or -mtime +$config->{log_size_date} \\) -exec rm -f {} \\;));
	system('rsync', '--delete', '-alHPe', 'ssh -xc arcfour', "$local_spool/log/", "$config->{rsync_to}/$run{distro_tag}/$run{my_arch}/$run{media}/log/");
}

unlink "$run{pidfile_home}/$run{pidfile}" if $run{pidfile};

exit();


#
#
#

sub check_needed {
    my ($srpm, $cache, $provides) = @_;
    if (!defined $cache->{needed}{$srpm} && !ref $cache->{needed}{$srpm}) { return 1 } 
    my $ok = 1;
    # migrate old cache format
    my $ent = $cache->{needed}{$srpm};
    if (ref $ent eq 'ARRAY') {
	my $table = $ent;
	$cache->{needed}{$srpm} = {};
	foreach my $t (@$table) {
	    my ($missing, $version, $maint) = @$t;
	    $cache->{needed}{$srpm}{$missing} = {
		version => $version,
		maint => $maint
	    };
	}
	$ent = $cache->{needed}{$srpm};
    }
    foreach my $name (keys %$ent) {
	my ($package, $version, $maint) = @{$ent->{$name}}{'package', 'version', 'maint'};
	# if packages does not exist anymore, it may have been rebuild, then try to recompute the build dependencies
	last if $package && !$provides->{$package};
	my $p_version = $provides->{$name};
	if ($p_version) {
	    next if $version == $p_version;
	    next if URPM::ranges_overlap($version, $p_version);
	}
	$ok = 0;
	if ($version) {
	    $ent->{$name}{version} = $version;
	}
	my $v = $version;
	if ($package) {
	    plog("ERROR: $srpm needs package $package which requires missing $name $v to be compiled.");
	} else {
	    plog("ERROR: $srpm needs $name $v to be compiled.");
	} 
	# try to recompile it once in a while
	last if $cache->{warning}{"install_deps_$srpm"}{$maint}++ % 72;
	return 1;
    }
    delete $cache->{needed}{$srpm} if $ok;
    $ok;
}

sub process_queue {
    my ($config, $run, $wrong_rpm, $o_quiet) = @_;
    return if !$run->{upload} && $o_quiet;
    my $dir = "$config->{local_upload}/iurt/$run->{distro_tag}/$run->{my_arch}/$run->{media}/";
    opendir my $rpmdir, $dir or return;
    my $urpmi = $run->{urpmi};
    foreach my $rpm (readdir $rpmdir) {
	my ($rarch, $srpm) = $urpmi->update_srpm($dir, $rpm, $wrong_rpm);
	$rarch or next;
	plog($rpm);
	next if !$run->{upload};
	# recheck if the package has not been uploaded in the meantime
	my $rpms_dir = "$config->{repository}/$run->{distro}/$run->{my_arch}/media/$run->{media}/";
	if (! -f "$rpms_dir/$rpm") {
	    my $err = system('/usr/bin/scp', "$dir/$rpm", $config->{upload} . "/$config->{extra_subdir}/RPMS/");
	    # try to keep the opportunity to prevent disk full
	    if ($err) {
		plog("ERROR: process_queue: cannot copy $dir/$rpm to ", $config->{upload}, "/$config->{extra_subdir}/RPMS/ ($!)");
		next;
	    }
	}
	if ($run->{upload_source}) {

	}
	unlink "$dir/$rpm";
	$cache->{queue}{$srpm} = 1;
    }
    closedir $rpmdir;
}

sub check_version {
	my ($run, $srpm, $srpm_version) = @_;
	my ($srpm_name) = $srpm =~ /(.*)-[^-]+-[^-]+\.src\.rpm/;
	$run->{build_all} and return 1;
	if (URPM::ranges_overlap("= $srpm", ">= $srpm_version->{$srpm_name}")) {
		$srpm_version->{$srpm_name} = $srpm;
		return 1;
	}
	0;
}

sub check_pid {
    my ($run) = @_;
    my $hostname = `hostname`;
    chomp $hostname;
    my $pidfile = $run->{pidfile};
    my $lockfile = "$run->{pidfile_home}/$pidfile.$hostname.pid.lock";
    plog("trying to lock $lockfile");
    open my $lock, ">$lockfile";
    my $lock_ok;
    # lockf seems not to work, try to workarround, but this start to create lock on the lock for the lock of the file.
    my $status = 1; #File::lockf::lock($lock);
    if (!$status) {
	$lock_ok = 1;
    } else {
	plog("ERROR: could not lock pid file (status $status $!)");
	if (! -f "$lockfile.2") {
	    plog("using $lockfile.2 as lock file");
	    open my $lock2, ">$lockfile.2" or die "FATAL $program_name: could not open lock file $lockfile.2";
	    print $lock2 $$;
	    close $lock2;
	}
    }
    if (!$run->{concurrent_run}) {
	opendir my $dir, $run->{pidfile_home};
	foreach my $f (readdir $dir) {
	    my ($pid_host) = $f =~ /$pidfile\.pid\.(.*)\.pid$/ or next; 
	    if ($pid_host ne $hostname) {
		my $pf = "$run->{pidfile_home}/$f";
		open my $test_PID, $pf;
		my $pid = <$test_PID>;
		my (@stat) = stat $pf;
		my $time = $stat[9];
		my $diff = time()-$time;
		my $msg = "$program_name: an other iurt is running for $run->{my_arch} on $pid_host, pid $pid, since $diff seconds";
		if ($diff < 36000) {
		    plog("$msg\n");
		    exit();
		} else {
		    plog("$msg, ignoring it");
		}
	    }
	}
    }
    $run->{pidfile} .= ".$hostname.pid";
    $pidfile = "$run->{pidfile_home}/$run->{pidfile}";
    if (-f $pidfile)  {
	my (@stat) = stat $pidfile;
	open my $test_PID, $pidfile;
	my $pid = <$test_PID>;
	close $test_PID;
	if (!$pid) {
	    plog("ERROR: invalid pidfile ($pid), should be <pid>");
	    unlink $pidfile;
	}
	if ($pid && getpgrp $pid != -1) {
	    my $time = $stat[9];
	    my $state = `ps h -o state $pid`;
	    chomp $state;
	    if ($time < time()-36000 || $state eq 'Z') {
		plog("an other iurt pid $pid is running for a very long time or is zombie, killing it");
		my $i;
		while ($i < 5 && getpgrp $pid != -1) {
		    kill_for_good($pid);
		    $i++;
		    sleep 1;
		}
	    } else  {
		plog("an other iurt is running for $run->{my_arch}, pid $pid, since ", time()-$time, " seconds");
		exit();
	    }
	} else {
	    plog("a previous iurt for $run->{my_arch} seems dead, cleaning.");
	    unlink $pidfile;
	}
    }
    plog("setting $pidfile pid lock");
    open my $PID, ">$pidfile" or die "FATAL $program_name: could not open pidfile $pidfile for writing";
    print $PID $$;
    close $PID;
    if ($lock_ok) { 
	File::lockf::ulock($lock);
    } else {
	unlink "$lockfile.2";
    }
    close $lock;
    unlink $lockfile;
}

sub check_media {
    my ($run, $cache, $config, $srpm_version, $wrong_rpm, $provides, $pack_provide, $maint) = @_;
# We could rely only on parsing the synthesis, hoping that they are correct, however this scan is very fast, so...
    if (!$run->{build_all}) {
	foreach my $subdir (@{$config->{all_media}{$run->{media}}}) {
	    my $rpms_dir = "$config->{repository}/$run->{distro}/$run->{my_arch}/media/$run->{media}/$subdir/";
	    plog("checking current packages in $rpms_dir");
	    opendir my $rpmdir, $rpms_dir or die "Could not open $rpms_dir: $!"; 
	    my $urpmi = $run->{urpmi};
	    foreach my $rpm (readdir $rpmdir) {
	        my ($rarch, $srpm) = $urpmi->update_srpm($rpms_dir, $rpm, $wrong_rpm);
	        $rarch or next;
	        $cache->{queue}{$srpm} = 1;
	        $run{status}{$srpm} = 'ok';
	        check_version($run, $srpm, $srpm_version);
	    }
	    closedir $rpmdir;
        }
    }

    foreach my $m (keys %{$config->{all_media}}) {
	foreach my $subdir (@{$config->{all_media}{$m}}) {
	    my $synthesis_file = "$config->{repository}/$run->{distro}/$run->{my_arch}/media/$m/$subdir/media_info/synthesis.hdlist.cz";
	    if (-f $synthesis_file) {
		plog("Parsing $synthesis_file");
		# FIXME: this is reinventing the wheel and will fail if default compressor change:
		if (open my $syn, "zcat $synthesis_file |") { 
                    local $_;
		    while (<$syn>) {
			my @prov;
			if (/^\@provides@(.*)/) {
			    foreach my $p (split '@', $1) {
                                if ($p =~ /([^[]+)(?:\[(.*)\])?/g) {
                                    push @prov, $1;
                                    $provides->{$1} = $2 || 1;
                                }
			    }
			} elsif (/\@info\@([^@]+)@/) {
			    my $p = $1;
			    my ($name) = $p =~ /(.*)-[^-]+-[^-]+\./;
			    $provides->{$p} = 1;
			    $pack_provide->{$_} = $name foreach @prov;
			}
		    }
		} else {
		    die "FATAL $program_name: Could not open $synthesis_file\n";
		}
	    }
	}
    }
    #"
    my $nb;
    foreach my $subdir (@{$config->{all_media}{$run->{media}}}) {
	$nb += search_packages(0, $cache, $provides, $run, $maint, $srpm_version, "$config->{repository}/$run->{distro}/SRPMS/$run->{media}/$subdir/");
    }
    $nb;
}

sub search_packages {
    my ($clean, $cache, $provides, $run, $_maint, $srpm_version, @dir) = @_;
    my ($to_compile, %rep);
    plog("iurt search_package: @dir");
    foreach my $dir (@dir) {
	plog("checking SRPMS dir $dir");
	opendir my $rpmdir, $dir or next;
	foreach my $srpm (readdir $rpmdir) {
	    # this is for the output of the new svn system
	    if ($srpm =~ /^\@\d+:(.*)/) {
		link "$dir/$srpm", "$dir/$1";
		# unlink "$dir/$srpm";
		$srpm = $1;
	    }
	    $srpm =~ /(.*)-[^-]+-[^-]+\.src\.rpm$/ or next;
	    $run->{status}{$srpm} ||= 0;
	    if ($config->{unwanted_packages} && $srpm =~ /$config->{unwanted_packages}/) { next }
	    my $ok = 1;
	    if (check_version($run, $srpm, $srpm_version)) { 
		if (!$run->{ignore_failure} && defined $cache->{failure}{$srpm}) {
		    $run->{status}{$srpm} = 'build_failure';
		    next;
		}
		my $check_needed = check_needed($srpm, $cache, $provides);
		$run->{status}{$srpm} = 'missing_buildrequires' if !$check_needed;
		-f "$dir/$srpm" or next;
		if (!$cache->{queue}{$srpm} && $check_needed) {
		    if (!check_arch("$dir/$srpm", $run{my_arch})) {
			$run->{status}{$srpm} = 'not_on_this_arch';
			next;
		    }
		    my $hdr = RPM4::Header->new("$dir/$srpm");
		    my $changelog = $hdr->queryformat("%{CHANGELOGNAME}");
		    my ($mail) = $changelog =~ /<(.*@.*)>/;
		    $maint{$srpm} = $mail;
		    print "$program_name: will try to compile $srpm\n";
		    $to_compile++;
		    push @{$run->{todo}}, [ $dir , $srpm, 1 ];
		}

		$ok &&= $cache->{queue}{$srpm};
	    }
	    if ($clean && ($rep{$srpm} || $ok)) {
		print "$program_name: cleaning $dir/$srpm\n";
		unlink "$dir/build/$srpm";
		unlink "$dir/$srpm";
	    }
	    $rep{$srpm} = 1;
	}
	closedir $rpmdir;
    }
    $to_compile;
}    

sub add_sudoers {
    my ($chroot, $user) = @_;
    my $tmpfile = "/tmp/sudoers";
    my $file = "$chroot/etc/sudoers";
    my $f;
    if (!open $f, ">$tmpfile") {
	plog("ERROR: could not open $file ($!)");
	return 0;
    }
    print $f qq(Cmnd_Alias RPM=/bin/rpm,/usr/sbin/urpmi,/usr/sbin/urpme,/usr/sbin/urpmi.addmedia,/usr/sbin/urpmi.update,/usr/sbin/urpmi.removemedia
root    ALL=(ALL) ALL
$user   ALL=(ALL) NOPASSWD:RPM
);
    close $f;
    chmod 0440, $tmpfile;

    plog("adding sudo for /bin/rpm, /usr/sbin/urpmi and /usr/sbin/urpme");
    my $ret = sudo($config, '--cp', $tmpfile, $file);
    unlink $tmpfile;

    if (!$ret) {
	plog("ERROR: could not write $file ($!)");
	return 0;
    }

    return -f $file;
}

sub dump_status {
    my ($local_spool, $run) = @_;
    my $media = $run->{media} ? "$run->{media}." : "";
    if (open my $file, ">$local_spool/log/status.${media}log") {
	foreach my $srpm (sort keys %{$run->{status}}) {
	    print $file "$srpm: ";
	    if ($run{status}{$srpm}) {
		print $file $run->{status}{$srpm};
	    } else {
		print $file "unknown";
	    }
	    print $file "\n";
	}
    }
}

#
# CM: FIXME: should notify in case of recreate_srpm_failure
#

sub send_status_mail {
    my ($run, $config, $cache) = @_;
    my %output;

    print "iurt compilation status\n";

    foreach my $rpm (keys %{$run->{status}}) {
	next if $run->{status}{$rpm} =~ /ok|not_on_this_arch/;

	if ($run->{status}{$rpm} eq 'missing_buildrequires') {
	    foreach my $missing (keys %{$cache->{needed}{$rpm}}) {
		my $h = $cache->{needed}{$rpm}{$missing};
		my $maint = $h->{maint} || 'Other';
		my $package = $h->{package};
		if ($package) {
		    push @{$output{missing}{$maint}{$package}{$missing}{$h->{version}}}, $rpm;
		} else {
		    $output{missing}{$maint}{$rpm}{$missing}{$h->{version}} = 1;
		}
	    }
        } elsif ($run->{status}{$rpm} eq 'build_failure') {
	    my ($maint) = get_maint($run, $rpm);
	    if ($cache->{buildrequires}{$rpm}) {
		push @{$output{buildrequires}{$maint}}, $rpm;
	    } else {
		push @{$output{build}{$maint}}, $rpm;
	    }
	} elsif (!$run->{status}{$rpm}) {
	    # need to find something more usefull to do at that point
	    next;
	}
    }

    my $text = "*** Missing buildrequires tag in specfile ***\n";
    foreach my $maint (keys %{$output{buildrequires}}) {
	$text .= "\n$maint\n";
	foreach my $pack (keys %{$output{missing}{$maint}}) {
	    foreach my $missing (keys %{$cache->{buildrequires}{$pack}}) {
		my $rpms = $cache->{buildrequires}{$pack}{$missing};
		if (@$rpms) {
		    $text .= "  $pack should have a buildrequires on @$rpms (for $missing-devel)\n";
		} else {
		    $text .= "  $pack should have a buildrequires for $missing-devel\n";
		}
	    }
	}
    }

    $text = "*** Missing dependencies ***\n";
    foreach my $maint (keys %{$output{missing}}) {
	$text .= "\n$maint\n";
	foreach my $pack (keys %{$output{missing}{$maint}}) {
	    foreach my $missing (%{$output{missing}{$maint}{$pack}}) {
		my $h = $output{missing}{$maint}{$pack}{$missing};
		foreach my $version (keys %$h) {
		    if (ref $h->{$version}) {
			$text .= "  $pack should be recompile because\n  $missing " . ($version ? "$version " : '') . "is not provided anymore\n";
			$text .= "    to compile " . join("\n               ", @{$h->{$version}}) . "\n";
		    } else {
			$text .= "  $pack needs $missing " . ($version ? "$version " : '') . "\n";
		    }
		}
	    }
	}
    }
    $text .=  "\n*** Build failure ***\n";
    foreach my $maint (keys %{$output{build}}) {
	$text .= "\n$maint\n";
	foreach my $rpm (@{$output{build}{$maint}}) {
	    $text .= "  $rpm (see $config->{log_url}/$run{distro_tag}/$run{my_arch}/$run->{media}/log/$rpm/)\n";
	}
    }
    print "$text\n";
    sendmail($run->{status_mail}, '' , "Iurt report for $run->{my_arch}/$run->{media}", $text, "Iurt the rebuild bot <$config->{admin}>", 0, $config);
}

sub find_provides {
    my ($pack_provide, $p) = @_;
    my @rpm;
    foreach my $provides (keys %{pack_provide}) {
	if ($provides =~ /$p/ && $provides =~ /devel/) {
	    push @rpm, $pack_provide->{$provides};
	}
    }
    @rpm;
}

sub check_sudo_access() {
    return 0 == system("$sudo -l -n $config->{iurt_root_command} &>/dev/null </dev/null");
}

__END__

Discussion

20061222 Warly
  Group building
  For the group building, we need to order the source packages, the problem is that we do not 
  really know what will be the provides of the resulting packages before building the.
  We could guess them by looking to older version, but that means that we need to have an access to
  the media deps files (synthesis should be enough).
  We can also perform a first pass of build to check which package build and then what are their
  provides. For the second pass, we will them be able to use the previously build packages to
  solve buildrequires.