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|
#! /usr/bin/perl
my $dpkglibdir = ".";
my $version = "1.3.0"; # This line modified by Makefile
my @filesinarchive;
my %dirincluded;
my %notfileobject;
my $fn;
$sourcestyle = 'X';
use POSIX;
use POSIX qw (:errno_h :signal_h);
use strict 'refs';
push (@INC, $dpkglibdir);
require 'controllib.pl';
sub usageversion {
print STDERR
"Debian GNU/Linux dpkg-source $version. Copyright (C) 1996
Ian Jackson and Klee Dienes. This is free software; see the GNU
General Public Licence version 2 or later for copying conditions.
There is NO warranty.
Usage: dpkg-source -x <filename>.dsc
dpkg-source -b <directory> [<orig-directory>|<orig-targz>|\'\']
Build options: -c<controlfile> get control info from this file
-l<changelogfile> get per-version info from this file
-F<changelogformat> force change log format
-V<name>=<value> set a substitution variable
-T<varlistfile> read variables here, not debian/substvars
-D<field>=<value> override or add a .dsc field and value
-U<field> remove a field
-sa auto select orig source (-sA is default)
-sk use packed orig source (unpack & keep)
-sp use packed orig source (unpack & remove)
-su use unpacked orig source (pack & keep)
-sr use unpacked orig source (pack & remove)
-ss trust packed & unpacked orig src are same
-sn there is no diff, do main tarfile only
-sA,-sK,-sP,-sU,-sR like -sa,-sp,-sk,-su,-sr but may overwrite
Extract options: -sp (default) leave orig source packed in current dir
-sn do not copy original source to current dir
-su unpack original source tree too
General options: -h print this message
";
}
$i = 100;
grep ($fieldimps {$_} = $i--,
qw (Source Version Binary Maintainer Architecture Standards-Version));
while (@ARGV && $ARGV[0] =~ m/^-/) {
$_=shift(@ARGV);
if (m/^-b$/) {
&setopmode('build');
} elsif (m/^-x$/) {
&setopmode('extract');
} elsif (m/^-s([akpursnAKPUR])$/) {
$sourcestyle= $1;
} elsif (m/^-c/) {
$controlfile= $';
} elsif (m/^-l/) {
$changelogfile= $';
} elsif (m/^-F([0-9a-z]+)$/) {
$changelogformat=$1;
} elsif (m/^-D([^\=:]+)[=:]/) {
$override{$1}= $';
} elsif (m/^-U([^\=:]+)$/) {
$remove{$1}= 1;
} elsif (m/^-V(\w[-:0-9A-Za-z]*)[=:]/) {
$substvar{$1}= $';
} elsif (m/^-T/) {
$varlistfile= $';
} elsif (m/^-h$/) {
&usageversion; exit(0);
} elsif (m/^--$/) {
last;
} else {
&usageerr("unknown option $_");
}
}
defined($opmode) || &usageerr("need -x or -b");
if ($opmode eq 'build') {
$sourcestyle =~ y/X/A/;
$sourcestyle =~ m/[akpursnAKPUR]/ ||
&usageerr("source handling style -s$sourcestyle not allowed with -b");
@ARGV || &usageerr("-b needs a directory");
@ARGV<=2 || &usageerr("-b takes at most a directory and an orig source argument");
$dir= shift(@ARGV);
$dir= "./$dir" unless $dir =~ m:^/:; $dir =~ s,/*$,,;
stat($dir) || &error("cannot stat directory $dir: $!");
-d $dir || &error("directory argument $dir is not a directory");
$changelogfile= "$dir/debian/changelog" unless defined($changelogfile);
$controlfile= "$dir/debian/control" unless defined($controlfile);
&parsechangelog;
&parsecontrolfile;
$archspecific=0;
for $_ (keys %fi) {
$v= $fi{$_};
if (s/^C //) {
#print STDERR "G key >$_< value >$v<\n";
if (m/^Source$/) { &setsourcepackage; }
elsif (m/^Standards-Version$|^Maintainer$/) { $f{$_}= $v; }
elsif (s/^X[BC]*S[BC]*-//i) { $f{$_}= $v; }
elsif (m/^(Section|Priority|Files)$/ || m/^X[BC]+-/i) { }
else { &unknown('general section of control info file'); }
} elsif (s/^C(\d+) //) {
#print STDERR "P key >$_< value >$v<\n";
$i=$1; $p=$fi{"C$i Package"};
push(@binarypackages,$p) unless $packageadded{$p}++;
if (m/^Architecture$/) {
#print STDERR "$p >$v< >".join(' ',@sourcearch)."<\n";
if ($v eq 'any') {
@sourcearch= ('any');
} elsif ($v eq 'all') {
if (!@sourcearch || $sourcearch[0] eq 'all') {
@sourcearch= ('all');
} else {
@sourcearch= ('any');
}
} else {
if (grep($sourcearch[0] eq $_, 'any','all')) {
@sourcearch= ('any');
} else {
for $a (split(/\s+/,$v)) {
&error("architecture $a only allowed on its own".
" (list for package $p is \`$a')")
if grep($a eq $_, 'any','all');
push(@sourcearch,$a) unless $archadded{$a}++;
}
}
}
$f{'Architecture'}= join(' ',@sourcearch);
} elsif (s/^X[BC]*S[BC]*-//i) {
$f{$_}= $v;
} elsif (m/^(Package|Essential|Pre-Depends|Depends|Provides)$/ ||
m/^(Recommends|Suggests|Optional|Conflicts|Replaces)$/ ||
m/^(Description|Section|Priority)$/ ||
m/^X[CS]+-/i) {
} else {
&unknown("package's section of control info file");
}
} elsif (s/^L //) {
#print STDERR "L key >$_< value >$v<\n";
if (m/^Source$/) {
&setsourcepackage;
} elsif (m/^Version$/) {
$f{$_}= $v;
} elsif (s/^X[BS]*C[BS]*-//i) {
$f{$_}= $v;
} elsif (m/^(Maintainer|Changes|Urgency|Distribution|Date)$/ ||
m/^X[BS]+-/i) {
} else {
&unknown("parsed version of changelog");
}
} else {
&internerr("value from nowhere, with key >$_< and value >$v<");
}
}
$f{'Binary'}= join(', ',@binarypackages);
for $f (keys %override) { $f{&capit($f)}= $override{$f}; }
for $f (qw(Version)) {
defined($f{$f}) || &error("missing information for critical output field $f");
}
for $f (qw(Maintainer Architecture Standards-Version)) {
defined($f{$f}) || &warn("missing information for output field $f");
}
defined($sourcepackage) || &error("unable to determine source package name !");
$f{'Source'}= $sourcepackage;
for $f (keys %remove) { delete $f{&capit($f)}; }
$version= $f{'Version'};
$version =~ s/^\d+://; $upstreamversion= $version; $upstreamversion =~ s/-[^-]*$//;
$basenamerev= $sourcepackage.'_'.$version;
$basename= $sourcepackage.'_'.$upstreamversion;
$basedirname= $basename;
#print STDERR ">$basedirname<\n";
$basedirname =~ s/_/-/;
#print STDERR ">$basedirname<\n";
$origdir= "$dir.orig";
$origtargz= "$basename.orig.tar.gz";
if (@ARGV) {
$origarg= shift(@ARGV);
if (length($origarg)) {
stat($origarg) || &error("cannot stat orig argument $origarg: $!");
if (-d _) {
$origdir= $origarg;
$origdir= "./$origdir" unless $origdir =~ m,^/,; $origdir =~ s,/*$,,;
$sourcestyle =~ y/aA/rR/;
$sourcestyle =~ m/[ursURS]/ ||
&error("orig argument is unpacked but source handling style".
" -s$sourcestyle calls for packed (.orig.tar.gz)");
} elsif (-f _) {
$origtargz= $origarg;
$sourcestyle =~ y/aA/pP/;
$sourcestyle =~ m/[kpsKPS]/ ||
&error("orig argument is packed but source handling style".
" -s$sourcestyle calls for unpacked (.orig/)");
} else {
&error("orig argument $origarg is not a plain file or directory");
}
} else {
$sourcestyle =~ y/aA/nn/;
$sourcestyle =~ m/n/ ||
&error("orig argument is empty (means no orig, no diff)".
" but source handling style -s$sourcestyle wants something");
}
}
if ($sourcestyle =~ m/[aA]/) {
if (stat("$origtargz")) {
-f _ || &error("packed orig \`$origtargz' exists but is not a plain file");
$sourcestyle =~ y/aA/pP/;
} elsif ($! != ENOENT) {
&syserr("unable to stat putative packed orig \`$origtargz'");
} elsif (stat("$origdir")) {
-d _ || &error("unpacked orig \`$origdir' exists but is not a directory");
$sourcestyle =~ y/aA/rR/;
} elsif ($! != ENOENT) {
&syserr("unable to stat putative unpacked orig \`$origdir'");
} else {
$sourcestyle =~ y/aA/nn/;
}
}
$dirbase= $dir; $dirbase =~ s,/?$,,; $dirbase =~ s,[^/]+$,,; $dirname= $&;
$dirname eq $basedirname || &warn("source directory \`$dir' is not <sourcepackage>".
"-<upstreamversion> \`$basedirname'");
if ($sourcestyle ne 'n') {
$origdirbase= $origdir; $origdirbase =~ s,/?$,,;
$origdirbase =~ s,[^/]+$,,; $origdirname= $&;
$origdirname eq "$basedirname.orig" ||
&warn(".orig directory name $origdirname is not <package>".
"-<upstreamversion> (wanted $basedirname.orig)");
$tardirbase= $origdirbase; $tardirname= $origdirname;
$tarname= $origtargz;
$tarname eq "$basename.orig.tar.gz" ||
&warn(".orig.tar.gz name $tarname is not <package>_<upstreamversion>".
".orig.tar.gz (wanted $basename.orig.tar.gz)");
} else {
$tardirbase= $dirbase; $tardirname= $dirname;
$tarname= "$basenamerev.tar.gz";
}
#print STDERR ">$dir|$origdir|$origtargz|$sourcestyle<\n";
if ($sourcestyle =~ m/[nurUR]/) {
if (stat($tarname)) {
$sourcestyle =~ m/[nUR]/ ||
&error("tarfile \`$tarname' already exists, not overwriting,".
" giving up; use -sU or -sR to override");
} elsif ($! != ENOENT) {
&syserr("unable to check for existence of \`$tarname'");
}
#print STDERR ">$tarname|$tardirbase|$tardirname<\n";
print("$progname: building $sourcepackage in $tarname\n")
|| &syserr("write building tar message");
&forkgzipwrite("$tarname.new");
defined($c2= fork) || &syserr("fork for tar");
if (!$c2) {
chdir($tardirbase) || &syserr("chdir to above (orig) source $tardirbase");
#system('pwd && ls');
open(STDOUT,">&GZIP") || &syserr("reopen gzip for tar");
# FIXME: put `--' argument back when tar is fixed
exec('tar','-cf','-',$tardirname); &syserr("exec tar");
}
close(GZIP);
&reapgzip;
$c2 == waitpid($c2,0) || &syserr("wait for tar");
$? && !(WIFSIGNALED($c2) && WTERMSIG($c2) == SIGPIPE) && subprocerr("tar");
rename("$tarname.new",$tarname) ||
&syserr("unable to rename \`$tarname.new' (newly created) to \`$tarname'");
} else {
print("$progname: building $sourcepackage using existing $tarname\n")
|| &syserr("write using existing tar message");
}
addfile("$tarname");
if ($sourcestyle =~ m/[kpKP]/) {
if (stat($origdir)) {
$sourcestyle =~ m/[KP]/ ||
&error("orig dir \`$origdir' already exists, not overwriting,".
" giving up; use -sA, -sK or -sP to override");
erasedir($origdir);
} elsif ($! != ENOENT) {
&syserr("unable to check for existence of orig dir \`$origdir'");
}
$expectprefix= $origdir; $expectprefix =~ s,^\./,,;
checktarsane($origtargz,$expectprefix);
mkdir("$origtargz.tmp-nest",0755) ||
&syserr("unable to create \`$origtargz.tmp-nest'");
extracttar($origtargz,"$origtargz.tmp-nest",$expectprefix);
rename("$origtargz.tmp-nest/$expectprefix",$expectprefix) ||
&syserr("unable to rename \`$origtargz.tmp-nest/$expectprefix' to ".
"\`$expectprefix'");
rmdir("$origtargz.tmp-nest") ||
&syserr("unable to remove \`$origtargz.tmp-nest'");
}
if ($sourcestyle =~ m/[kpursKPUR]/) {
print("$progname: building $sourcepackage in $basenamerev.diff.gz\n")
|| &syserr("write building diff message");
&forkgzipwrite("$basenamerev.diff.gz");
defined($c2= open(FIND,"-|")) || &syserr("fork for find");
if (!$c2) {
chdir($dir) || &syserr("chdir to $dir for find");
exec('find','.','-print0'); &syserr("exec find");
}
$/= "\0";
file:
while (defined($fn= <FIND>)) {
$fn =~ s/\0$//; $fn =~ s,^\./,,;
lstat("$dir/$fn") || &syserr("cannot stat file $dir/$fn");
if (-l _) {
$type{$fn}= 'symlink';
&checktype('-l') || next;
defined($n= readlink("$dir/$fn")) ||
&syserr("cannot read link $dir/$fn");
defined($n2= readlink("$origdir/$fn")) ||
&syserr("cannot read orig link $origdir/$fn");
$n eq $n2 || &unrepdiff2("symlink to $n2","symlink to $n");
} elsif (-f _) {
$type{$fn}= 'plain file';
if (!lstat("$origdir/$fn")) {
$! == ENOENT || &syserr("cannot stat orig file $origdir/$fn");
$ofnread= '/dev/null';
} elsif (-f _) {
$ofnread= "$origdir/$fn";
} else {
&unrepdiff2("something else","plain file");
next;
}
defined($c3= open(DIFFGEN,"-|")) || &syserr("fork for diff");
if (!$c3) {
exec('diff','-u',
'-L',"$basedirname.orig/$fn",
'-L',"$basedirname/$fn",
'--',"$ofnread","$dir/$fn"); &syserr("exec diff");
}
$difflinefound= 0;
$/= "\n";
while (<DIFFGEN>) {
if (m/^binary/i) {
close(DIFFGEN); $/= "\0";
&unrepdiff("binary file contents changed");
next file;
} elsif (m/^[-+\@ ]/) {
$difflinefound=1;
} elsif (m/^\\ No newline at end of file$/) {
&warn("file $fn has no final newline ".
"(either original or modified version)");
} else {
s/\n$//;
&internerr("unknown line from diff -u on $fn: \`$_'");
}
print(GZIP $_) || &syserr("failed to write to gzip");
}
close(DIFFGEN); $/= "\0";
if (WIFEXITED($?) && (($es=WEXITSTATUS($?))==0 || $es==1)) {
if ($es==1 && !$difflinefound) {
&unrepdiff("diff gave 1 but no diff lines found");
}
} else {
subprocerr("diff on $dir/$fn");
}
} elsif (-p _) {
$type{$fn}= 'pipe';
&checktype('-p');
} elsif (-b _ || -c _ || -S _) {
&unrepdiff("device or socket is not allowed");
} elsif (-d _) {
$type{$fn}= 'directory';
} else {
&unrepdiff("unknown file type ($!)");
}
}
close(FIND); $? && subprocerr("find on $dir");
close(GZIP) || &syserr("finish write to gzip pipe");
&reapgzip;
defined($c2= open(FIND,"-|")) || &syserr("fork for 2nd find");
if (!$c2) {
chdir($origdir) || &syserr("chdir to $origdir for 2nd find");
exec('find','.','-print0'); &syserr("exec 2nd find");
}
$/= "\0";
while (defined($fn= <FIND>)) {
$fn =~ s/\0$//; $fn =~ s,^\./,,;
next if defined($type{$fn});
lstat("$origdir/$fn") || &syserr("cannot check orig file $origdir/$fn");
if (-f _) {
&warn("ignoring deletion of file $fn");
} elsif (-d _) {
&warn("ignoring deletion of directory $fn");
} elsif (-l _) {
&warn("ignoring deletion of symlink $fn");
} else {
&unrepdiff2('not a file, directory or link','nonexistent');
}
}
close(FIND); $? && subprocerr("find on $dirname");
&addfile("$basenamerev.diff.gz");
}
if ($sourcestyle =~ m/[prPR]/) {
erasedir($origdir);
}
print("$progname: building $sourcepackage in $basenamerev.dsc\n")
|| &syserr("write building message");
open(STDOUT,"> $basenamerev.dsc") || &syserr("create $basenamerev.dsc");
&outputclose(1);
if ($ur) {
print(STDERR "$progname: unrepresentable changes to source\n")
|| &syserr("write error msg: $!");
exit(1);
}
exit(0);
} else {
$sourcestyle =~ y/X/p/;
$sourcestyle =~ m/[pun]/ ||
&usageerr("source handling style -s$sourcestyle not allowed with -b");
@ARGV==1 || &usageerr("-x needs exactly one argument, the .dsc");
$dsc= shift(@ARGV);
$dsc= "./$dsc" unless $dsc =~ m:^/:;
$dscdir= $dsc; $dscdir= "./$dscdir" unless $dsc =~ m,^/|^\./,;
$dscdir =~ s,/[^/]+$,,;
open(CDATA,"< $dsc") || &error("cannot open .dsc file $dsc: $!");
&parsecdata('S',-1,"source control file $dsc");
close(CDATA);
for $f (qw(Source Version Files)) {
defined($fi{"S $f"}) ||
&error("missing critical source control field $f");
}
$sourcepackage= $fi{'S Source'};
$sourcepackage =~ m/[^-+.0-9a-z]/ &&
&error("source package name contains illegal character \`$&'");
$sourcepackage =~ m/^[0-9a-z]./ ||
&error("source package name is too short or starts with non-alphanum");
$version= $fi{'S Version'};
$version =~ m/[^-+:.0-9a-zA-Z]/ &&
&error("version number contains illegal character \`$&'");
$version =~ s/^\d+://;
if ($version =~ m/-([^-]+)$/) {
$baseversion= $`; $revision= $1;
} else {
$baseversion= $version; $revision= '';
}
$files= $fi{'S Files'};
for $file (split(/\n /,$files)) {
next if $file eq '';
$file =~ m/^([0-9a-f]{32})[ \t]+(\d+)[ \t]+([0-9a-zA-Z][-+:.,=0-9a-zA-Z_]+)$/
|| &error("Files field contains bad line \`$file'");
($md5sum{$3},$size{$3},$file) = ($1,$2,$3);
&setfile(\$tarfile) if $file =~ m/\.tar\.gz$/;
&setfile(\$difffile) if $file =~ m/\.diff\.gz$/;
}
$newdirectory= $sourcepackage.'-'.$baseversion;
$expectprefix= $newdirectory; $expectprefix.= '.orig' if length($difffile);
length($tarfile) || &error("no tarfile in Files field");
checkstats($tarfile);
checkstats($difffile) if length($difffile);
checktarsane("$dscdir/$tarfile",$expectprefix);
if (length($difffile)) {
&forkgzipread("$dscdir/$difffile");
$/="\n";
while (<GZIP>) {
s/\n$// || &error("diff is missing trailing newline");
if (/^--- /) {
$fn= $';
substr($fn,0,length($expectprefix)+1) eq "$expectprefix/" ||
&error("diff patches file ($fn) not in expected subdirectory");
$fn =~ m/\.dpkg-orig$/ &&
&error("diff patches file with name ending .dpkg-orig");
$dirname= $fn;
if ($dirname =~ s,/[^/]+$,, && !defined($dirincluded{$dirname})) {
$dirtocreate{$dirname} = 1;
}
defined($notfileobject{$fn}) &&
&error("diff patches something which is not a plain file");
$_= <GZIP>; s/\n$// ||
&error("diff finishes in middle of ---/+++ (line $.)");
$_ eq '+++ '.$newdirectory.substr($fn,length($expectprefix)) ||
&error("line after --- for file $fn isn't as expected");
$filepatched{$fn}++ && &error("diff patches file $fn twice");
} elsif (/^\\ No newline at end of file$/) {
} elsif (/^[-+ \@]/) {
} else {
&error ("diff contains unknown line \`$_'");
}
}
close(GZIP);
&reapgzip;
}
print("$progname: extracting $sourcepackage in $newdirectory\n")
|| &syserr("write extracting message");
&erasedir($newdirectory);
&erasedir("$newdirectory.orig");
mkdir("$expectprefix.tmp-nest",0755)
|| &syserr("unable to create \`$expectprefix.tmp-nest'");
extracttar("$dscdir/$tarfile","$expectprefix.tmp-nest","$expectprefix");
rename("$expectprefix.tmp-nest/$expectprefix","$expectprefix")
|| &syserr("unable to rename \`$expectprefix.tmp-nest/$expectprefix' "
."to \`$expectprefix'");
rmdir("$expectprefix.tmp-nest")
|| &syserr("unable to remove \`$expectprefix.tmp-nest'");
for $dircreate (keys %dirtocreate) {
$dircreatem= "";
for $dircreatep (split("/",$dirc)) {
$dircreatem.= $dircreatep;
if (!lstat($dircreatem)) {
$! == ENOENT || &syserr("cannot stat $dircreatem");
mkdir($dircreatem,0777)
|| &syserr("failed to create $dircreatem subdirectory");
}
else {
-d _ || &error("diff patches file in directory \`$dircreate',"
." but $dircreatem isn't a directory !");
}
}
}
if (length($difffile)) {
rename($expectprefix,$newdirectory) ||
&syserr("failed to rename newly-extracted $expectprefix to $newdirectory");
if ($sourcestyle =~ m/u/) {
mkdir("$expectprefix.tmp-nest",0755)
|| &syserr("unable to create \`$expectprefix.tmp-nest'");
extracttar("$dscdir/$tarfile","$expectprefix.tmp-nest",
"$expectprefix");
rename("$expectprefix.tmp-nest/$expectprefix","$expectprefix")
|| &syserr("unable to rename \`$expectprefix.tmp-nest/"
."$expectprefix' to \`$expectprefix'");
rmdir("$expectprefix.tmp-nest")
|| &syserr("unable to remove \`$expectprefix.tmp-nest'");
} elsif ($sourcestyle =~ m/p/) {
stat("$dscdir/$tarfile") ||
&syserr("failed to stat \`$dscdir/$tarfile' to see if need to copy");
($dsctardev,$dsctarino) = stat _;
$dumptar= $sourcepackage.'_'.$baseversion.'.orig.tar.gz';
if (!stat($dumptar)) {
$! == ENOENT || &syserr("failed to check destination \`$dumptar'".
" to see if need to copy");
} else {
($dumptardev,$dumptarino) = stat _;
if ($dumptardev == $dsctardev && $dumptarino == $dsctarino) {
$dumptar= '';
}
}
if (length($dumptar)) {
system('cp','--',"$dscdir/$tarfile","$dumptar");
$? && subprocerr("cp $dscdir/$tarfile to $dumptar");
}
}
&forkgzipread("$dscdir/$difffile");
defined($c2= fork) || &syserr("fork for patch");
if (!$c2) {
open(STDIN,"<&GZIP") || &syserr("reopen gzip for patch");
chdir($newdirectory) || &syserr("chdir to $newdirectory for patch");
exec('patch','-s','-t','-F','0','-N','-p1','-u',
'-V','never','-b','-z','.dpkg-orig');
&syserr("exec patch");
}
close(GZIP);
$c2 == waitpid($c2,0) || &syserr("wait for patch");
$? && subprocerr("patch");
&reapgzip;
for $fn (keys %filepatched) {
$ftr= "$newdirectory/".substr($fn,length($expectprefix)+1).".dpkg-orig";
unlink($ftr) || &syserr("remove patch backup file $ftr");
}
if (!(@s= lstat("$newdirectory/debian/rules"))) {
$! == ENOENT || &syserr("cannot stat $newdirectory/debian/rules");
&warn("$newdirectory/debian/rules does not exist");
} elsif (-f _) {
chmod($s[2] | 0111, "$newdirectory/debian/rules") ||
&syserr("cannot make $newdirectory/debian/rules executable");
} else {
&warn("$newdirectory/debian/rules is not a plain file");
}
}
$execmode= 0777 & ~umask;
(@s= stat('.')) || &syserr("cannot stat \`.'");
$dirmode= $execmode | ($s[2] & 02000);
$plainmode= $execmode & ~0111;
$fifomode= ($plainmode & 0222) | (($plainmode & 0222) << 1);
for $fn (@filesinarchive) {
$fn= substr($fn,length($expectprefix)+1);
$fn= "$newdirectory/$fn";
(@s= lstat($fn)) || &syserr("cannot stat extracted object \`$fn'");
$mode= $s[2];
if (-d _) {
$newmode= $dirmode;
} elsif (-f _) {
$newmode= ($mode & 0111) ? $execmode : $plainmode;
} elsif (-p _) {
$newmode= $fifomode;
} elsif (!-l _) {
&internerr("unknown object \`$fn' after extract (mode ".
sprintf("0%o",$mode).")");
} else { next; }
next if ($mode & 07777) == $newmode;
chmod($newmode,$fn) ||
&syserr(sprintf("cannot change mode of \`%s' to 0%o from 0%o",
$fn,$newmode,$mode));
}
exit(0);
}
sub checkstats {
my ($f) = @_;
my @s;
my $m;
open(STDIN,"< $dscdir/$f") || &syserr("cannot read $dscdir/$f");
(@s= stat(STDIN)) || &syserr("cannot fstat $dscdir/$f");
$s[7] == $size{$f} || &error("file $f has size $s[7] instead of expected $size{$f}");
$m= `md5sum`; $? && subprocerr("md5sum $f"); $m =~ s/\n$//;
$m =~ m/^[0-9a-f]{32}$/ || &failure("md5sum of $f gave bad output \`$m'");
$m eq $md5sum{$f} || &error("file $f has md5sum $m instead of expected $md5sum{$f}");
open(STDIN,"</dev/null") || &syserr("reopen stdin from /dev/null");
}
sub erasedir {
my ($dir) = @_;
if (!lstat($dir)) {
$! == ENOENT && return;
&syserr("cannot stat directory $dir (before removal)");
}
system 'rm','-rf','--',$dir;
$? && subprocerr("rm -rf $dir");
if (!stat($dir)) {
$! == ENOENT && return;
&syserr("unable to check for removal of dir \`$dir'");
}
&failure("rm -rf failed to remove \`$dir'");
}
use strict 'vars';
sub checktarcpio {
my ($tarfileread, $wpfx) = @_;
my ($tarprefix, $c2);
@filesinarchive = ();
# make <CPIO> read from the uncompressed archive file
&forkgzipread ("$tarfileread");
if (! defined ($c2 = open (CPIO,"-|"))) { &syserr ("fork for cpio"); }
if (!$c2) {
open (STDIN,"<&GZIP") || &syserr ("reopen gzip for cpio");
&cpiostderr;
exec ('cpio','-0t');
&syserr ("exec cpio");
}
close (GZIP);
$/ = "\0";
open (CPIO, "<cpiolog");
while (defined ($fn = <CPIO>)) {
$fn =~ s/\0$//;
# store printable name of file for error messages
my $pname = $fn;
$pname =~ y/ -~/?/c;
if (! $tarprefix) {
if ($fn =~ m/\n/) {
&error("first output from cpio -0t (from \`$tarfileread') ".
"contains newline - you probably have an out of ".
"date version of cpio. GNU cpio 2.4.2-2 is known to work");
}
$tarprefix = ($fn =~ m,([^/]*)[/],)[0];
# need to check for multiple dots on some operating systems
# empty tarprefix (due to regex failer) will match emptry string
if ($tarprefix =~ /^[.]*$/) {
&error("tarfile \`$tarfileread' does not extract into a ".
"directory off the current directory ($tarprefix from $pname)");
}
}
if ($fn =~ m/\n/) {
&error ("tarfile \`$tarfileread' contains object with".
" newline in its name ($pname)");
}
next if ($fn eq '././@LongLink');
my $fprefix = substr ($fn, 0, length ($tarprefix));
my $slash = substr ($fn, length ($tarprefix), 1);
if ((($slash ne '/') && ($slash ne '')) || ($fprefix ne $tarprefix)) {
&error ("tarfile \`$tarfileread' contains object ($pname) ".
"not in expected directory ($tarprefix)");
}
# need to check for multiple dots on some operating systems
if ($fn =~ m/[.]{2,}/) {
&error ("tarfile \`$tarfileread' contains object with".
" /../ in its name ($pname)");
}
push (@filesinarchive, $fn);
}
close (CPIO);
$? && subprocerr ("cpio");
&reapgzip;
$/= "\n";
my $tarsubst = quotemeta ($tarprefix);
@filesinarchive = map { s/^$tarsubst/$wpfx/; $_ } @filesinarchive;
return $tarprefix;
}
sub checktarsane {
my ($tarfileread, $wpfx) = @_;
my ($c2);
%dirincluded = ();
%notfileobject = ();
my $tarprefix = &checktarcpio ($tarfileread, $wpfx);
# make <TAR> read from the uncompressed archive file
&forkgzipread ("$tarfileread");
if (! defined ($c2 = open (TAR,"-|"))) { &syserr ("fork for tar -t"); }
if (! $c2) {
$ENV{'LANG'}= 'C';
open (STDIN, "<&GZIP") || &syserr ("reopen gzip for tar -t");
exec ('tar', '-vvtf', '-'); &syserr ("exec tar -vvtf -");
}
close (GZIP);
my $efix= 0;
open (TAR, "<tarlog");
while (<TAR>) {
chomp;
if (! m,^(\S{10})\s,) {
&error("tarfile \`$tarfileread' contains unknown object ".
"listed by tar as \`$_'");
}
my $mode = $1;
$mode =~ s/^([-dpsl])// ||
&error("tarfile \`$tarfileread' contains object \`$fn' with ".
"unknown or forbidden type \`".substr($_,0,1)."'");
my $type = $&;
if ($mode =~ /^l/) { $_ =~ s/ -\> .*//; }
s/ link to .+//;
if (length ($_) <= 48) {
&error ("tarfile \`$tarfileread' contains incomplete entry \`$_'\n");
}
my $tarfn = substr ($_, 48, length ($_) - 48);
$tarfn = deoctify ($tarfn);
# store printable name of file for error messages
my $pname = $tarfn;
$pname =~ y/ -~/?/c;
# fetch name of file as given by cpio
$fn = $filesinarchive[$efix++];
if ($tarfn ne $fn) {
if ((length ($fn) == 99) && (length ($tarfn) >= 99)
&& (substr ($fn, 0, 99) eq substr ($tarfn, 0, 99))) {
# this file doesn't match because cpio truncated the name
# to the first 100 characters. let it slide for now.
&warn ("filename \`$pname' was truncated by cpio;" .
" unable to check full pathname");
} else {
&error ("tarfile \`$tarfileread' contains unexpected object".
" listed by tar as \`$_'; expected \`$pname'");
}
}
# if cpio truncated the name above,
# we still can't allow files to expand into /../
# need to check for multiple dots on some operating systems
if ($tarfn =~ m/[.]{2,}/) {
&error ("tarfile \`$tarfileread' contains object with".
"/../ in its name ($pname)");
}
if ($tarfn =~ /\.dpkg-orig$/) {
&error ("tarfile \`$tarfileread' contains file with name ending in .dpkg-orig");
}
if ($mode =~ /[sStT]/ && $type ne 'd') {
&error ("tarfile \`$tarfileread' contains setuid, setgid".
" or sticky object \`$pname'");
}
if ($tarfn eq "$tarprefix/debian" && $type ne 'd') {
&error ("tarfile \`$tarfileread' contains object \`debian'".
" that isn't a directory");
}
if ($type eq 'd') { $tarfn =~ s,/$,,; }
my $dirname = $tarfn;
if (($dirname =~ s,/[^/]+$,,) && (! defined ($dirincluded{$dirname}))) {
&error ("tarfile \`$tarfileread' contains object \`$pname' but its containing ".
"directory \`$dirname' does not precede it");
}
if ($type eq 'd') { $dirincluded{$tarfn} = 1; }
if ($type ne '-') { $notfileobject{$tarfn} = 1; }
}
close (TAR);
#$? && subprocerr ("tar -vvtf");
&reapgzip;
my $tarsubst = quotemeta ($tarprefix);
%dirincluded = map { s/^$tarsubst/$wpfx/; $_=>1 } (keys %dirincluded);
%notfileobject = map { s/^$tarsubst/$wpfx/; $_=>1 } (keys %notfileobject);
}
no strict 'vars';
sub extracttar {
my ($tarfileread,$dirchdir,$newtopdir) = @_;
&forkgzipread("$tarfileread");
defined($c2= fork) || &syserr("fork for tar -xkf -");
if (!$c2) {
chdir("$dirchdir") || &syserr("cannot chdir to \`$dirchdir' for tar extract");
open(STDIN,"<&GZIP") || &syserr("reopen gzip for cpio -i");
&cpiostderr;
exec('tar','-xkf','-'); &syserr("exec tar -xkf -");
}
close(GZIP);
$c2 == waitpid($c2,0) || &syserr("wait for tar -xkf -");
$? && subprocerr("tar -xkf -");
&reapgzip;
opendir(D,"$dirchdir") || &syserr("Unable to open dir $dirchdir");
@dirchdirfiles = grep($_ ne "." && $_ ne "..",readdir(D));
closedir(D) || &syserr("Unable to close dir $dirchdir");
(@dirchdirfiles==1 && -d "$dirchdir/$dirchdirfiles[0]") ||
&error("$tarfileread extracted into >1 directory");
rename("$dirchdir/$dirchdirfiles[0]", "$dirchdir/$newtopdir") ||
&syserr("Unable to rename $dirchdir/$dirchdirfiles[0] to ".
"$dirchdir/$newtopdir");
}
sub cpiostderr {
open(STDERR,"| egrep -v '^[0-9]+ blocks\$' >&2") ||
&syserr("reopen stderr for cpio to grep out blocks message");
}
sub setfile {
my ($varref) = @_;
if (defined ($$varref)) {
&error ("repeated file type - files " . $$varref . " and $file");
}
$$varref = $file;
}
sub checktype {
if (!lstat("$origdir/$fn")) {
&unrepdiff2("nonexistent",$type{$fn});
} else {
$v= eval("$_[0] _ ? 2 : 1"); $v || &internerr("checktype $@ ($_[0])");
return 1 if $v == 2;
&unrepdiff2("something else",$type{$fn});
}
return 0;
}
sub setopmode {
defined($opmode) && &usageerr("only one of -x or -b allowed, and only once");
$opmode= $_[0];
}
sub unrepdiff {
print(STDERR "$progname: cannot represent change to $fn: $_[0]\n")
|| &syserr("write syserr unrep");
$ur++;
}
sub unrepdiff2 {
print(STDERR "$progname: cannot represent change to $fn:\n".
"$progname: new version is $_[1]\n".
"$progname: old version is $_[0]\n")
|| &syserr("write syserr unrep");
$ur++;
}
sub forkgzipwrite {
#print STDERR "forkgzipwrite $_[0]\n";
open(GZIPFILE,"> $_[0]") || &syserr("create file $_[0]");
pipe(GZIPREAD,GZIP) || &syserr("pipe for gzip");
defined($cgz= fork) || &syserr("fork for gzip");
if (!$cgz) {
open(STDIN,"<&GZIPREAD") || &syserr("reopen gzip pipe"); close(GZIPREAD);
close(GZIP); open(STDOUT,">&GZIPFILE") || &syserr("reopen tar.gz");
exec('gzip','-9'); &syserr("exec gzip");
}
close(GZIPREAD);
$gzipsigpipeok= 0;
}
sub forkgzipread {
#print STDERR "forkgzipread $_[0]\n";
open(GZIPFILE,"< $_[0]") || &syserr("read file $_[0]");
pipe(GZIP,GZIPWRITE) || &syserr("pipe for gunzip");
defined($cgz= fork) || &syserr("fork for gunzip");
if (!$cgz) {
open(STDOUT,">&GZIPWRITE") || &syserr("reopen gunzip pipe"); close(GZIPWRITE);
close(GZIP); open(STDIN,"<&GZIPFILE") || &syserr("reopen input file");
exec('gunzip'); &syserr("exec gunzip");
}
close(GZIPWRITE);
$gzipsigpipeok= 1;
}
sub reapgzip {
#print STDERR "reapgzip $_[0]\n";
$cgz == waitpid($cgz,0) || &syserr("wait for gzip");
!$? || ($gzipsigpipeok && WIFSIGNALED($?) && WTERMSIG($?)==SIGPIPE) ||
subprocerr("gzip");
close(GZIPFILE);
}
sub addfile {
my ($filename)= @_;
stat($filename) || &syserr("could not stat output file \`$filename'");
$size= (stat _)[7];
my $md5sum= `md5sum <$filename`;
$? && &subprocerr("md5sum $filename");
$md5sum =~ s/^([0-9a-f]{32})\n$/$1/ || &failure("md5sum gave bogus output \`$_'");
$f{'Files'}.= "\n $md5sum $size $filename";
}
# replace \ddd with their corresponding character, refuse \ddd > \377
# modifies $_ (hs)
{
my $backslash;
sub deoctify {
my $fn= $_[0];
$backslash= sprintf("\\%03o", unpack("C", "\\")) if !$backslash;
s/\\{2}/$backslash/g;
@_= split(/\\/, $fn);
foreach (@_) {
/^(\d{3})/ or next;
&failure("bogus character `\\$1' in `$fn'\n") if oct($1) > 255;
$_= pack("c", oct($1)) . $';
}
return join("", @_);
} }
|
