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- #! /usr/bin/perl
- #
- # dpkg-shlibdeps
- # $Id$
- use strict;
- use warnings;
- our $progname;
- our $version = "1.4.1.19"; # This line modified by Makefile
- our $dpkglibdir = "/usr/lib/dpkg";
- my $admindir = "/var/lib/dpkg";
- use English;
- use POSIX qw(:errno_h :signal_h);
- my $shlibsoverride= '/etc/dpkg/shlibs.override';
- my $shlibsdefault= '/etc/dpkg/shlibs.default';
- my $shlibslocal= 'debian/shlibs.local';
- my $shlibsppdir;
- my $shlibsppext= '.shlibs';
- my $varnameprefix= 'shlibs';
- my $dependencyfield= 'Depends';
- my $varlistfile= 'debian/substvars';
- my $packagetype= 'deb';
- my @depfields= qw(Suggests Recommends Depends Pre-Depends);
- my %depstrength;
- my $i=0; grep($depstrength{$_}= ++$i, @depfields);
- push(@INC,$dpkglibdir);
- require 'controllib.pl';
- require 'dpkg-gettext.pl';
- textdomain("dpkg-dev");
- #use strict;
- #use warnings;
- sub version {
- printf _g("Debian %s version %s.\n"), $progname, $version;
- printf _g("
- Copyright (C) 1996 Ian Jackson.
- Copyright (C) 2000 Wichert Akkerman.
- Copyright (C) 2006 Frank Lichtenheld.");
- printf _g("
- This is free software; see the GNU General Public Licence version 2 or
- later for copying conditions. There is NO warranty.
- ");
- }
- sub usage {
- printf _g(
- "Usage: %s [<option> ...] <executable>|-e<executable> [<option> ...]
- Positional options (order is significant):
- <executable> include dependencies for <executable>,
- -e<executable> (use -e if <executable> starts with \`-')
- -d<dependencyfield> next executable(s) set shlibs:<dependencyfield>.
- Options:
- -p<varnameprefix> set <varnameprefix>:* instead of shlibs:*.
- -O print variable settings to stdout.
- -L<localshlibsfile> shlibs override file, not debian/shlibs.local.
- -T<varlistfile> update variables here, not debian/substvars.
- -t<type> set package type (default is deb).
- --admindir=<directory> change the administrative directory.
- -h, --help show this help message.
- --version show the version.
- Dependency fields recognised are:
- %s
- "), $progname, join("/",@depfields);
- }
- my ($stdout, @exec, @execfield);
- foreach (@ARGV) {
- if (m/^-T/) {
- $varlistfile= $POSTMATCH;
- } elsif (m/^-p(\w[-:0-9A-Za-z]*)$/) {
- $varnameprefix= $1;
- } elsif (m/^-L/) {
- $shlibslocal= $POSTMATCH;
- } elsif (m/^-O$/) {
- $stdout= 1;
- } elsif (m/^-(h|-help)$/) {
- usage; exit(0);
- } elsif (m/^--version$/) {
- version; exit(0);
- } elsif (m/^--admindir=/) {
- $admindir = $POSTMATCH;
- -d $admindir ||
- error(sprintf(_g("administrative directory '%s' does not exist"),
- $admindir));
- } elsif (m/^-d/) {
- $dependencyfield= capit($POSTMATCH);
- defined($depstrength{$dependencyfield}) ||
- warning(sprintf(_g("unrecognised dependency field '%s'"), $dependencyfield));
- } elsif (m/^-e/) {
- push(@exec,$POSTMATCH); push(@execfield,$dependencyfield);
- } elsif (m/^-t/) {
- $packagetype= $POSTMATCH;
- } elsif (m/^-/) {
- usageerr(sprintf(_g("unknown option \`%s'"), $_));
- } else {
- push(@exec,$_); push(@execfield,$dependencyfield);
- }
- }
- $shlibsppdir = "$admindir/info";
- @exec || usageerr(_g("need at least one executable"));
- sub isbin {
- open (F, $_[0]) || die(sprintf(_g("unable to open '%s' for test"), $_[0]));
- my $d;
- if (read (F, $d, 4) != 4) {
- die (sprintf(_g("unable to read first four bytes of '%s' as magic number"), $_[0]));
- }
- if ($d =~ /^\177ELF$/) { # ELF binary
- return 1;
- } elsif (unpack ('N', $d) == 0x8086010B) { # obsd dyn bin
- return 1;
- } elsif (unpack ('N', $d) == 0x86010B) { # obsd stat bin
- return 1;
- } elsif ($d =~ /^\#\!..$/) { # shell script
- return 0;
- } elsif (unpack ('N', $d) == 0xcafebabe) { # JAVA binary
- return 0;
- } else {
- die(sprintf(_g("unrecognized file type for '%s'"), $_[0]));
- }
- }
- my @librarypaths = qw( /lib /usr/lib /lib32 /usr/lib32 /lib64 /usr/lib64
- /emul/ia32-linux/lib /emul/ia32-linux/usr/lib );
- my %librarypaths = map { $_ => 'default' } @librarypaths;
- if ($ENV{LD_LIBRARY_PATH}) {
- foreach (reverse split( /:/, $ENV{LD_LIBRARY_PATH} )) {
- s,/+$,,;
- unless (exists $librarypaths{$_}) {
- $librarypaths{$_} = 'env';
- unshift @librarypaths, $_;
- }
- }
- }
- # Support system library directories.
- my $ldconfigdir = '/lib/ldconfig';
- if (opendir(DIR, $ldconfigdir)) {
- my @dirents = readdir(DIR);
- closedir(DIR);
- for (@dirents) {
- next if /^\./;
- my $d = `readlink -f $ldconfigdir/$_`;
- chomp $d;
- unless (exists $librarypaths{$d}) {
- $librarypaths{$d} = 'ldconfig';
- push @librarypaths, $d;
- }
- }
- }
- open CONF, '</etc/ld.so.conf' or
- warning(sprintf(_g("couldn't open /etc/ld.so.conf: %s"), $!));
- while( <CONF> ) {
- next if /^\s*$/;
- chomp;
- s,/+$,,;
- unless (exists $librarypaths{$_}) {
- $librarypaths{$_} = 'conf';
- push @librarypaths, $_;
- }
- }
- close CONF;
- my (%rpaths, %format);
- my (@libfiles, @libname, @libsoname, @libfield, @libexec);
- for ($i=0;$i<=$#exec;$i++) {
- if (!isbin ($exec[$i])) { next; }
- # Now we get the direct deps of the program
- defined(my $c= open(P,"-|")) || syserr(_g("cannot fork for objdump"));
- if (!$c) {
- exec("objdump", "-p", "--", $exec[$i]) or
- syserr(_g("cannot exec objdump"));
- }
- while (<P>) {
- chomp;
- if (/^\s*\S+:\s*file\s+format\s+(\S+)\s*$/) {
- $format{$exec[$i]} = $1;
- } elsif (m,^\s*NEEDED\s+,) {
- if (m,^\s*NEEDED\s+((\S+)\.so\.(\S+))$,) {
- push(@libname,$2); push(@libsoname,$3);
- push(@libfield,$execfield[$i]);
- push(@libfiles,$1);
- push(@libexec,$exec[$i]);
- } elsif (m,^\s*NEEDED\s+((\S+)-(\S+)\.so)$,) {
- push(@libname,$2); push(@libsoname,$3);
- push(@libfield,$execfield[$i]);
- push(@libfiles,$1);
- push(@libexec,$exec[$i]);
- } else {
- m,^\s*NEEDED\s+(\S+)$,;
- warning(sprintf(_g("format of 'NEEDED %s' not recognized"), $1));
- }
- } elsif (/^\s*RPATH\s+(\S+)\s*$/) {
- push @{$rpaths{$exec[$i]}}, split(/:/, $1);
- }
- }
- close(P) or subprocerr(sprintf(_g("objdump on \`%s'"), $exec[$i]));
- }
- # Now: See if it is in this package. See if it is in any other package.
- my @curshlibs;
- sub searchdir {
- my $dir = shift;
- if(opendir(DIR, $dir)) {
- my @dirents = readdir(DIR);
- closedir(DIR);
- for (@dirents) {
- if ( -f "$dir/$_/DEBIAN/shlibs" ) {
- push(@curshlibs, "$dir/$_/DEBIAN/shlibs");
- next;
- } elsif ( $_ !~ /^\./ && ! -e "$dir/$_/DEBIAN" &&
- -d "$dir/$_" && ! -l "$dir/$_" ) {
- &searchdir("$dir/$_");
- }
- }
- }
- }
- my $searchdir = $exec[0];
- my $curpackdir = "debian/tmp";
- do { $searchdir =~ s,/[^/]*$,,; } while($searchdir =~ m,/,
- && ! -d "$searchdir/DEBIAN");
- if ($searchdir =~ m,/,) {
- $curpackdir = $searchdir;
- $searchdir =~ s,/[^/]*,,;
- &searchdir($searchdir);
- }
- if (1 || $#curshlibs >= 0) {
- PRELIB:
- for ($i=0;$i<=$#libname;$i++) {
- if(scanshlibsfile($shlibslocal,$libname[$i],$libsoname[$i],$libfield[$i])
- || scanshlibsfile($shlibsoverride,$libname[$i],$libsoname[$i],$libfield[$i])) {
- splice(@libname, $i, 1);
- splice(@libsoname, $i, 1);
- splice(@libfield, $i, 1);
- splice(@libfiles, $i, 1);
- splice(@libexec, $i, 1);
- $i--;
- next PRELIB;
- }
- for my $shlibsfile (@curshlibs) {
- if(scanshlibsfile($shlibsfile, $libname[$i], $libsoname[$i], $libfield[$i])) {
- splice(@libname, $i, 1);
- splice(@libsoname, $i, 1);
- splice(@libfield, $i, 1);
- splice(@libfiles, $i, 1);
- splice(@libexec, $i, 1);
- $i--;
- next PRELIB;
- }
- }
- }
- }
- my %pathpackages;
- if ($#libfiles >= 0) {
- grep(s/\[\?\*/\\$&/g, @libname);
- defined(my $c= open(P,"-|")) || syserr(_g("cannot fork for dpkg --search"));
- if (!$c) {
- my %seen_libfiles;
- my @uniq_libfiles = grep !$seen_libfiles{$_}++, @libfiles;
- close STDERR; # we don't need to see dpkg's errors
- open STDERR, "> /dev/null";
- $ENV{LC_ALL} = "C";
- exec("dpkg", "--search", "--", @uniq_libfiles) or
- syserr(_g("cannot exec dpkg"));
- }
- while (<P>) {
- chomp;
- if (m/^local diversion |^diversion by/) {
- warning(_g("diversions involved - output may be incorrect"));
- print(STDERR " $_\n") || syserr(_g("write diversion info to stderr"));
- } elsif (m=^(\S+(, \S+)*): (\S+)$=) {
- push @{$pathpackages{$LAST_PAREN_MATCH}}, split(/, /, $1);
- } else {
- warning(sprintf(_g("unknown output from dpkg --search: '%s'"), $_));
- }
- }
- close(P);
- }
- LIB:
- for ($i=0;$i<=$#libname;$i++) {
- my $file = $libfiles[$i];
- my @packages;
- foreach my $rpath (@{$rpaths{$libexec[$i]}}) {
- if (exists $pathpackages{"$rpath/$file"}
- && format_matches($libexec[$i],"$rpath/$file")) {
- push @packages, @{$pathpackages{"$rpath/$file"}};
- }
- }
- foreach my $path (@librarypaths) {
- if (exists $pathpackages{"$path/$file"}
- && format_matches($libexec[$i],"$path/$file")) {
- push @packages, @{$pathpackages{"$path/$file"}};
- }
- }
- if (!@packages) {
- warning(sprintf(_g("could not find any packages for %s"), $libfiles[$i]));
- } else {
- for my $p (@packages) {
- scanshlibsfile("$shlibsppdir/$p$shlibsppext",
- $libname[$i],$libsoname[$i],$libfield[$i])
- && next LIB;
- }
- }
- scanshlibsfile($shlibsdefault,$libname[$i],$libsoname[$i],$libfield[$i])
- && next;
- warning(sprintf(_g("unable to find dependency information for ".
- "shared library %s (soname %s, ".
- "path %s, dependency field %s)"),
- $libname[$i], $libsoname[$i],
- $libfiles[$i], $libfield[$i]));
- }
- sub format_matches {
- my ($file1, $file2) = @_;
- my ($format1, $format2) = (get_format($file1),get_format($file2));
- return $format1 eq $format2;
- }
- sub get_format {
- my ($file) = @_;
- if ($format{$file}) {
- return $format{$file};
- } else {
- defined(my $c= open(P,"-|")) || syserr(_g("cannot fork for objdump"));
- if (!$c) {
- exec("objdump", "-a", "--", $file) or
- syserr(_g("cannot exec objdump"));
- }
- while (<P>) {
- chomp;
- if (/^\s*\S+:\s*file\s+format\s+(\S+)\s*$/) {
- $format{$file} = $1;
- return $format{$file};
- }
- }
- close(P) or subprocerr(sprintf(_g("objdump on \`%s'"), $file));
- }
- }
- my (%predefdepfdep, %unkdepfdone, %unkdepf);
- sub scanshlibsfile {
- my ($fn,$ln,$lsn,$lf) = @_;
- my ($da,$dk);
- $fn= "./$fn" if $fn =~ m/^\s/;
- if (!open(SLF,"< $fn")) {
- $! == ENOENT || syserr(sprintf(_g("unable to open shared libs info file \`%s'"), $fn));
- return 0;
- }
- while (<SLF>) {
- s/\s*\n$//; next if m/^\#/;
- if (!m/^\s*(?:(\S+):\s+)?(\S+)\s+(\S+)/) {
- warning(sprintf(_g("shared libs info file '%s' line %d: bad line '%s'"), $fn, $., $_));
- next;
- }
- next if defined $1 && $1 ne $packagetype;
- next if $2 ne $ln || $3 ne $lsn;
- return 1 if $fn eq "$curpackdir/DEBIAN/shlibs";
- $da= $POSTMATCH;
- last if defined $1; # exact match, otherwise keep looking
- }
- close(SLF);
- return 0 unless defined $da;
- for my $dv (split(/,/,$da)) {
- $dv =~ s/^\s+//; $dv =~ s/\s+$//;
- if (defined($depstrength{$lf})) {
- if (!defined($predefdepfdep{$dv}) ||
- $depstrength{$predefdepfdep{$dv}} < $depstrength{$lf}) {
- $predefdepfdep{$dv}= $lf;
- }
- } else {
- $dk= "$lf: $dv";
- if (!defined($unkdepfdone{$dk})) {
- $unkdepfdone{$dk}= 1;
- $unkdepf{$lf} .= ', ' if defined($unkdepf{$lf});
- $unkdepf{$lf}.= $dv;
- }
- }
- }
- return 1;
- }
- my $fh;
- if (!$stdout) {
- open(Y,"> $varlistfile.new") ||
- syserr(sprintf(_g("open new substvars file \`%s'"), "$varlistfile.new"));
- unless ($REAL_USER_ID) {
- chown(getfowner(), "$varlistfile.new") ||
- syserr(sprintf(_g("chown of \`%s'"), "$varlistfile.new"));
- }
- if (open(X,"< $varlistfile")) {
- while (<X>) {
- s/\n$//;
- next if m/^(\w[-:0-9A-Za-z]*):/ && $1 eq $varnameprefix;
- print(Y "$_\n") ||
- syserr(sprintf(_g("copy old entry to new varlist file \`%s'"), "$varlistfile.new"));
- }
- } elsif ($! != ENOENT) {
- syserr(sprintf(_g("open old varlist file \`%s' for reading"), $varlistfile));
- }
- $fh = \*Y;
- } else {
- $fh = \*STDOUT;
- }
- my %defdepf;
- for my $dv (sort keys %predefdepfdep) {
- my $lf= $predefdepfdep{$dv};
- $defdepf{$lf} .= ', ' if defined($defdepf{$lf});
- $defdepf{$lf}.= $dv;
- }
- for my $lf (reverse @depfields) {
- next unless defined($defdepf{$lf});
- print($fh "$varnameprefix:$lf=$defdepf{$lf}\n")
- || syserr(_g("write output entry"));
- }
- for my $lf (sort keys %unkdepf) {
- print($fh "$varnameprefix:$lf=$unkdepf{$lf}\n")
- || syserr(_g("write userdef output entry"));
- }
- close($fh) || syserr(_g("close output"));
- if (!$stdout) {
- rename("$varlistfile.new",$varlistfile) ||
- syserr(sprintf(_g("install new varlist file \`%s'"), $varlistfile));
- }
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