From 373fc2de4058b63ffdf8bd1925f0bc95b7cfe2be Mon Sep 17 00:00:00 2001 From: freesource Date: Wed, 28 Nov 2001 09:04:43 +0000 Subject: [PATCH] This is hardwired now, but it parses nsswitch.conf and adds all the service modules found in PASS 2 when links are checked for. This involves adding and extra foreach loop. --- BootRoot/Yard.pm | 281 +++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 262 insertions(+), 19 deletions(-) diff --git a/BootRoot/Yard.pm b/BootRoot/Yard.pm index 6f3b920..26bf8be 100644 --- a/BootRoot/Yard.pm +++ b/BootRoot/Yard.pm @@ -36,10 +36,10 @@ use Exporter; @EXPORT = qw(start_logging_output info kernel_version_check verbosity read_contents_file extra_links library_dependencies hard_links space_check create_filesystem find_file_in_path sys device_table - text_insert error warning logadj *LOGFILE which_tests - create_fstab ars2 make_link_absolute make_link_relative - cleanup_link yard_glob); # these last two added - # as a test + text_insert error warning warning_test logadj *LOGFILE + which_tests create_fstab ars2 make_link_absolute + make_link_relative cleanup_link yard_glob); + # these last four added for tests use strict; use File::Basename; @@ -183,7 +183,6 @@ sub read_contents_file { kernel_version_check($kernel, $kernel_version_choice); - # Open DEVICE_TABLE if ( $fs_type eq "genext2fs" ) { @@ -280,7 +279,7 @@ sub read_contents_file { } - } + } # genext2fs if ($line =~ /->/) { ##### EXPLICIT LINK if ($line =~ /[\*\?\[]/) { @@ -397,14 +396,14 @@ sub read_contents_file { cf_warn($contents_file, $line, "Can't find $replacement"); } elsif ($replacement =~ m|^/dev/(?!null)|) { - # Allow /dev/null but no other devices - cf_warn($contents_file, $line, - "Can't replace a file with a device"); - - } else { - $replaced_by{$file} = $abs_replacement; - $Included{$file} = 1; - } + # Allow /dev/null but no other devices + cf_warn($contents_file, $line, + "Can't replace a file with a device"); + + } else { + $replaced_by{$file} = $abs_replacement; + $Included{$file} = 1; + } next LINE; } # End of replacement spec @@ -487,11 +486,64 @@ sub extra_links { my ($contents_file) = @_; + #info(0, "PASS 2: Picking up extra files from links, and finding pam and nss service modules...\n"); + info(0, "PASS 2: Picking up extra files from links...\n"); - for (keys %Included) { + # First we find nss and pam stuff if asked for. + + for my $file (keys %Included) { + + ##### Use replacement file if specified + $file = $replaced_by{$file} if defined($replaced_by{$file}); + + ## Here's where some cool stuff happens + ## This can be turned on/off from the YardBox + ## NSS + if ( $file =~ m,/nsswitch.conf, ) { + + my @nss_libs = find_nss($file); + foreach ( @nss_libs ) { + $Included{$_} = 1; # adding on the run + } + + } + + ## PAM + if ( $file =~ m,/pam\.conf|/pam\.d/, ) { + info(0,"PAM $file\n"); + + } + + } + + + for my $file (keys %Included) { + + + ##### Use replacement file if specified + $file = $replaced_by{$file} if defined($replaced_by{$file}); + + ## Here's where some cool stuff happens + ## This can be turned on/off from the YardBox + ## NSS + if ( $file =~ m,/nsswitch.conf, ) { + + my @nss_libs = find_nss($file); + foreach ( @nss_libs ) { + $Included{$_} = 1; # adding on the run + } + + } + + ## PAM + if ( $file =~ m,/pam\.conf|/pam\.d/, ) { + info(0,"PAM $file\n"); + + } + # watch for "" - freesource - include_file($contents_file, $_) if $_ ne ""; + include_file($contents_file, $file) if $file ne ""; } %Included = (%Included, %user_defined_link); # --freesource @@ -518,6 +570,7 @@ sub library_dependencies { ##### Use replacement file if specified $file = $replaced_by{$file} if defined($replaced_by{$file}); + ##### Skip links (target will be checked) next if defined($links_to{$file}); # Symbolic (declared) next if -l $file; # Symbolic (on disk) @@ -2334,7 +2387,8 @@ sub check_pam { } } info(0, "Done with PAM\n"); -} + +} # end check_pam @@ -2360,7 +2414,7 @@ sub check_nss { info(0, "You're using $libc\n"); } - ## glibc 2.2 uses version 2 for its services + ## glibc 2.2 uses version 2 for its services --freesource ## my $X; if ( $libc_version == 2 ) { @@ -2407,7 +2461,8 @@ sub check_nss { } } info(0, "Done with NSS\n"); -} + +} # end sub check_nss sub check_links { info(0, "\nChecking links relative to $mount_point\n"); @@ -2727,6 +2782,194 @@ BLARD ##### END REPLACEMENTS +##### PAM and NSS + +#### These next two are basically check_pam and check_nss without the +#### verbosity. + +sub find_pam { + my($pam_configured) = 0; # Have we seen some pam config file yet? + info(0, "Checking for PAM\n"); + + my($pamd_dir) = "$mount_point/etc/pam.d"; + my($pam_conf) = "$mount_point/etc/pam.conf"; + + if (-e $pam_conf) { + info(0, "Checking $pam_conf\n"); + $pam_configured = 1; + open(PAM, $pam_conf) or error("Can't open pam.conf: $!\n"); + while () { + chomp; + next if /^\#/ or /^\s*$/; # Skip comments and empty lines + my($file) = (split)[3]; # Get fourth field + + # This adds a more extensive path search --freesource + my @file; + if ( $file !~ m,^/, ) { + my $base = basename($file); + @file = ("/usr/lib/security/$base", "/lib/security/$base"); + } + else { + @file = ($file); + } + + my (%file_check, $ok); + foreach my $files ( @file ) { + if (!-e "$mount_point/$files") { + $file_check{$files} = 0; + } + else { + $file_check{$files} = 1; + } + } + + for ( values %file_check ) { + $ok = 1 if $_ == 1; + } + + if ( !$ok ) { + + foreach $file ( @file ) { + warning_test "$pam_conf($.): $_\n", + "\tLibrary $file does not exist on root fs\n"; + } + + } + + # That's all we check for now + } + close(PAM) or error("Closing PAM: $!"); + info(0, "Done with $pam_conf\n"); + } + + + if (-e $pamd_dir) { + info(0, "Checking files in $pamd_dir\n"); + opendir(PAMD, $pamd_dir) or error("Can't open $pamd_dir: $!"); + my($file); + while (defined($file = readdir(PAMD))) { + my($file2) = "$pamd_dir/$file"; + next unless -f $file2; # Skip directories, etc. + open(PF, $file2) or error("$file2: $!"); + while () { + chomp; + next if /^\#/ or /^\s*$/; # Skip comments and empty lines + my($file) = (split)[2]; ## Get third field --freesource + $pam_configured = 1; + + # This adds a more extensive path search --freesource + my @file; + if ( $file !~ m,^/, ) { + my $base = basename($file); + @file = ("/usr/lib/security/$base", "/lib/security/$base"); + } + else { + @file = ($file); + } + + my (%file_check, $ok); + foreach my $files ( @file ) { + if (!-e "$mount_point/$files") { + $file_check{$files} = 0; + } + else { + $file_check{$files} = 1; + } + } + + for ( values %file_check ) { + $ok = 1 if $_ == 1; + } + + if ( !$ok ) { + + foreach $file ( @file ) { + warning_test "$pam_conf($.): $_\n", + "\tLibrary $file does not exist on root fs\n"; + } + + } + + } + close(PF); + } + closedir(PAMD); + info(0, "Done with $pamd_dir\n"); + } + + # Finally, see whether PAM configuration is needed + if (!$pam_configured and -e $login_binary) { + my($dependencies) = scalar(`ldd $login_binary`); + if (defined($dependencies) and $dependencies =~ /libpam/) { + warning_test "Warning: login ($login_binary) needs PAM, but you haven't\n", + "\tconfigured it (in /etc/pam.conf or /etc/pam.d/)\n", + "\tYou probably won't be able to login.\n"; + } + } + info(0, "Done with PAM\n"); + +} # end sub find_pam + + +sub find_nss { + + my($nss_conf) = @_; + my @nss_libs; + + my($libc) = yard_glob("$mount_point/lib/libc-*"); ## removed 2 + my($libc_version) = $libc =~ m|/lib/libc-\d+\.(\d)|; ## changed 2 & . + if (!defined($libc_version)) { + info(0,"Parsing $nss_conf:\n"); + warning_test "Can't determine your libc version\n"; + } else { + info(0,"Parsing $nss_conf:\n"); + info(0, "Using NSS libraries from $libc\n"); + } + + ## glibc 2.2 uses version 2 for its services --freesource + ## + my $X; + if ( $libc_version == 2 ) { + $X = $libc_version; + } + else { + $X = $libc_version + 1; + } + + if (-e $nss_conf) { + open(NSS, "<$nss_conf") or die "open($nss_conf): $!"; + + my($line); my %nss_repeats; + while (defined($line = )) { + chomp $line; + next if $line =~ /^\#/; + next if $line =~ /^\s*$/; + my($db, $entries) = $line =~ m/^(\w+):\s*(.+)$/; + # Remove bracketed expressions (action specifiers) + $entries =~ s/\[[^\]]*\]//g; + my(@entries) = split(' ', $entries); + my($entry); + for $entry (@entries) { + next if $entry =~ /^\[/; # ignore action specifiers + my($lib) = "/lib/libnss_${entry}.so.${X}"; + if ( -e $lib) { + info(0,"[$line] ='s $lib\n"); + push(@nss_libs,$lib) if !$nss_repeats{$lib}; + $nss_repeats{$lib} = 1; + } + } + } + close(NSS) or error("Closing NSS: $!"); + + return @nss_libs; + } + + +} # end sub find_nss + + +##### END PAM and NSS + 1;