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|
#!/usr/bin/perl
# Global variables:
# $v - value parameter to function
# $sourcepackage - name of sourcepackage
# %fi - map of fields values. keys are of the form "S# key"
# where S is source (L is changelog, C is control)
# and # is an index
# %p2i - map from datafile+packagename to index in controlfile
# (used if multiple packages can be listed). Key is
# "S key" where S is the source and key is the packagename
# %substvar - map with substitution variables
$pkgdatadir=".";
$parsechangelog= 'dpkg-parsechangelog';
@pkg_dep_fields = qw(Replaces Provides Depends Pre-Depends Recommends Suggests
Conflicts Enhances);
@src_dep_fields = qw(Build-Depends Build-Depends-Indep
Build-Conflicts Build-Conflicts-Indep);
$substvar{'Format'}= 1.7;
$substvar{'Newline'}= "\n";
$substvar{'Space'}= " ";
$substvar{'Tab'}= "\t";
$maxsubsts=50;
$warnable_error= 1;
$progname= $0; $progname= $& if $progname =~ m,[^/]+$,;
$getlogin = getlogin();
if(!defined($getlogin)) {
open(SAVEIN, "<&STDIN");
close(STDIN);
open(STDIN, "<&STDERR");
$getlogin = getlogin();
close(STDIN);
open(STDIN, "<&SAVEIN");
close(SAVEIN);
}
if(!defined($getlogin)) {
open(SAVEIN, "<&STDIN");
close(STDIN);
open(STDIN, "<&STDOUT");
$getlogin = getlogin();
close(STDIN);
open(STDIN, "<&SAVEIN");
close(SAVEIN);
}
if (defined ($ENV{'LOGNAME'})) {
@fowner = getpwnam ($ENV{'LOGNAME'});
if (! @fowner) { die (sprintf ('unable to get login information for username "%s"', $ENV{'LOGNAME'})); }
} elsif (defined ($getlogin)) {
@fowner = getpwnam ($getlogin);
if (! @fowner) { die (sprintf ('unable to get login information for username "%s"', $getlogin)); }
} else {
&warn (sprintf ('no utmp entry available and LOGNAME not defined; using uid of process (%d)', $<));
@fowner = getpwuid ($<);
if (! @fowner) { die (sprintf ('unable to get login information for uid %d', $<)); }
}
@fowner = @fowner[2,3];
sub capit {
my @pieces = map { ucfirst(lc) } split /-/, $_[0];
return join '-', @pieces;
}
sub findarch {
$arch=`dpkg-architecture -qDEB_HOST_ARCH`;
$? && &subprocerr("dpkg-architecture -qDEB_HOST_ARCH");
chomp $arch;
$substvar{'Arch'}= $arch;
}
sub read_cputable {
open CPUTABLE, "$pkgdatadir/cputable"
or &syserr("unable to open cputable");
while (<CPUTABLE>) {
if (m/^(?!\#)(\S+)\s+(\S+)\s+(\S+)/) {
$cputable{$1} = $2;
$cputable_re{$1} = $3;
push @cpu, $1;
}
}
close CPUTABLE;
}
sub read_ostable {
open OSTABLE, "$pkgdatadir/ostable"
or &syserr("unable to open ostable");
while (<OSTABLE>) {
if (m/^(?!\#)(\S+)\s+(\S+)\s+(\S+)/) {
$ostable{$1} = $2;
$ostable_re{$1} = $3;
push @os, $1;
}
}
close OSTABLE;
}
sub debian_arch_fix
{
local ($os, $cpu) = @_;
if ($os eq "linux") {
return $cpu;
} else {
return "$os-$cpu";
}
}
sub debian_arch_split {
local ($_) = @_;
if (/^([^-]*)-(.*)/) {
return ($1, $2);
} elsif (/any/ || /all/) {
return ($_, $_);
} else {
return ("linux", $_);
}
}
sub debian_arch_eq {
my ($a, $b) = @_;
my ($a_os, $a_cpu) = debian_arch_split($a);
my ($b_os, $b_cpu) = debian_arch_split($b);
return ("$a_os-$a_cpu" eq "$b_os-$b_cpu");
}
sub debian_arch_is {
my ($real, $alias) = @_;
my ($real_os, $real_cpu) = debian_arch_split($real);
my ($alias_os, $alias_cpu) = debian_arch_split($alias);
if ("$real_os-$real_cpu" eq "$alias_os-$alias_cpu") {
return 1;
} elsif ("$alias_os-$alias_cpu" eq "any-any") {
return 1;
} elsif ("$alias_os-$alias_cpu" eq "any-$real_cpu") {
return 1;
} elsif ("$alias_os-$alias_cpu" eq "$real_os-any") {
return 1;
}
return 0;
}
&read_cputable;
&read_ostable;
sub debian_arch_expand
{
local ($_) = @_;
/^(!)?(.*)/;
local $not = $1 || '';
local $arch = $2;
local ($os, $cpu) = debian_arch_split($arch);
local @list;
if ("$os-$cpu" eq 'any-any') {
@list = 'any';
} elsif ($os eq 'all' or $cpu eq 'all') {
@list = 'all';
} elsif ($cpu eq 'any') {
foreach my $_cpu (@cpu) {
push @list, $not.debian_arch_fix($os, $_cpu);
}
} elsif ($os eq 'any') {
foreach my $_os (@os) {
push @list, $not.debian_arch_fix($_os, $cpu);
}
} else {
push @list, $not.debian_arch_fix($os, $cpu);
}
return @list;
}
sub substvars {
my ($v) = @_;
my ($lhs,$vn,$rhs,$count);
$count=0;
while ($v =~ m/\$\{([-:0-9a-z]+)\}/i) {
# If we have consumed more from the leftover data, then
# reset the recursive counter.
$count= 0 if (length($') < length($rhs));
$count < $maxsubsts ||
&error("too many substitutions - recursive ? - in \`$v'");
$lhs=$`; $vn=$1; $rhs=$';
if (defined($substvar{$vn})) {
$v= $lhs.$substvar{$vn}.$rhs;
$count++;
} else {
&warn("unknown substitution variable \${$vn}");
$v= $lhs.$rhs;
}
}
return $v;
}
sub outputclose {
my ($dosubstvars) = @_;
for $f (keys %f) { $substvar{"F:$f"}= $f{$f}; }
&parsesubstvars if ($dosubstvars);
for $f (sort { $fieldimps{$b} <=> $fieldimps{$a} } keys %f) {
$v= $f{$f};
if ($dosubstvars) {
$v= &substvars($v);
}
$v =~ m/\S/ || next; # delete whitespace-only fields
$v =~ m/\n\S/ && &internerr("field $f has newline then non whitespace >$v<");
$v =~ m/\n[ \t]*\n/ && &internerr("field $f has blank lines >$v<");
$v =~ m/\n$/ && &internerr("field $f has trailing newline >$v<");
if ($dosubstvars) {
$v =~ s/,[\s,]*,/,/g;
$v =~ s/^\s*,\s*//;
$v =~ s/\s*,\s*$//;
}
$v =~ s/\$\{\}/\$/g;
print("$f: $v\n") || &syserr("write error on control data");
}
close(STDOUT) || &syserr("write error on close control data");
}
sub parsecontrolfile {
$controlfile="./$controlfile" if $controlfile =~ m/^\s/;
open(CDATA,"< $controlfile") || &error("cannot read control file $controlfile: $!");
binmode(CDATA);
$indices= &parsecdata('C',1,"control file $controlfile");
$indices >= 2 || &error("control file must have at least one binary package part");
for ($i=1;$i<$indices;$i++) {
defined($fi{"C$i Package"}) ||
&error("per-package paragraph $i in control info file is ".
"missing Package line");
}
defined($fi{"C Source"}) ||
&error("source paragraph in control info file is ".
"missing Source line");
}
my $substvarsparsed = 0;
sub parsesubstvars {
if (length($varlistfile) && !$substvarsparsed) {
$varlistfile="./$varlistfile" if $varlistfile =~ m/\s/;
if (open(SV,"< $varlistfile")) {
binmode(SV);
while (<SV>) {
next if m/^\#/ || !m/\S/;
s/\s*\n$//;
m/^(\w[-:0-9A-Za-z]*)\=/ ||
&error("bad line in substvars file $varlistfile at line $.");
$substvar{$1}= $';
}
close(SV);
} elsif ($! != ENOENT ) {
&error("unable to open substvars file $varlistfile: $!");
}
$substvarsparsed = 1;
}
}
sub parsedep {
my ($dep_line, $use_arch, $reduce_arch) = @_;
my @dep_list;
if (!$host_arch) {
$host_arch = `dpkg-architecture -qDEB_HOST_ARCH`;
chomp $host_arch;
}
foreach my $dep_and (split(/,\s*/m, $dep_line)) {
my @or_list = ();
ALTERNATE:
foreach my $dep_or (split(/\s*\|\s*/m, $dep_and)) {
my ($package, $relation, $version);
$package = $1 if ($dep_or =~ s/^([a-zA-Z0-9][a-zA-Z0-9+._-]*)\s*//m);
($relation, $version) = ($1, $2)
if ($dep_or =~ s/^\(\s*(=|<=|>=|<<?|>>?)\s*([^)]+).*\)\s*//m);
my @arches;
@arches = split(/\s+/m, $1) if ($use_arch && $dep_or =~ s/^\[([^]]+)\]\s*//m);
if ($reduce_arch && @arches) {
my $seen_arch='';
foreach my $arch (@arches) {
$arch=lc($arch);
if (debian_arch_is($host_arch, $arch)) {
$seen_arch=1;
next;
} elsif ($arch =~ /^!/) {
($not_arch = $arch) =~ s/^!//;
if (debian_arch_is($host_arch, $not_arch)) {
next ALTERNATE;
} else {
# This is equivilant to
# having seen the current arch,
# unless the current arch
# is also listed..
$seen_arch=1;
}
}
}
if (! $seen_arch) {
next;
}
}
if (length($dep_or)) {
&warn("can't parse dependency $dep_and");
return undef;
}
push @or_list, [ $package, $relation, $version, \@arches ];
}
push @dep_list, \@or_list;
}
\@dep_list;
}
sub showdep {
my ($dep_list, $show_arch) = @_;
my @and_list;
foreach my $dep_and (@$dep_list) {
my @or_list = ();
foreach my $dep_or (@$dep_and) {
my ($package, $relation, $version, $arch_list) = @$dep_or;
my @arches = map(debian_arch_expand($_), @$arch_list);
chomp @arches;
push @or_list, $package . ($relation && $version ? " ($relation $version)" : '') . ($show_arch && @arches ? " [@arches]" : '');
}
push @and_list, join(' | ', @or_list);
}
join(', ', @and_list);
}
sub parsechangelog {
defined($c=open(CDATA,"-|")) || &syserr("fork for parse changelog");
binmode(CDATA);
if (!$c) {
@al=($parsechangelog);
push(@al,"-F$changelogformat") if length($changelogformat);
push(@al,"-v$since") if length($since);
push(@al,"-l$changelogfile");
exec(@al) || &syserr("exec parsechangelog $parsechangelog");
}
&parsecdata('L',0,"parsed version of changelog");
close(CDATA); $? && &subprocerr("parse changelog");
$substvar{'Source-Version'}= $fi{"L Version"};
}
sub checkpackagename {
my $name = shift || '';
$name =~ m/[^-+.0-9a-z]/o &&
&error("source package name `$name' contains illegal character `$&'");
$name =~ m/^[0-9a-z]/o ||
&error("source package name `$name' starts with non-alphanum");
}
sub checkversion {
my $version = shift || '';
$version =~ m/[^-+:.0-9a-zA-Z~]/o &&
&error("version number contains illegal character `$&'");
}
sub setsourcepackage {
checkpackagename( $v );
if (length($sourcepackage)) {
$v eq $sourcepackage ||
&error("source package has two conflicting values - $sourcepackage and $v");
} else {
$sourcepackage= $v;
}
}
sub readmd5sum {
(my $md5sum = shift) or return;
$md5sum =~ s/^([0-9a-f]{32})\s*\*?-?\s*\n?$/$1/o
|| &failure("md5sum gave bogus output `$md5sum'");
return $md5sum;
}
sub parsecdata {
local ($source,$many,$whatmsg) = @_;
# many=0: ordinary control data like output from dpkg-parsechangelog
# many=1: many paragraphs like in source control file
# many=-1: single paragraph of control data optionally signed
local ($index,$cf,$paraborder);
$index=''; $cf=''; $paraborder=1;
while (<CDATA>) {
s/\s*\n$//;
next if (m/^$/ and $paraborder);
next if (m/^#/);
$paraborder=0;
if (m/^(\S+)\s*:\s*(.*)$/) {
$cf=$1; $v=$2;
$cf= &capit($cf);
$fi{"$source$index $cf"}= $v;
$fi{"o:$source$index $cf"}= $1;
if (lc $cf eq 'package') { $p2i{"$source $v"}= $index; }
} elsif (m/^\s+\S/) {
length($cf) || &syntax("continued value line not in field");
$fi{"$source$index $cf"}.= "\n$_";
} elsif (m/^-----BEGIN PGP/ && $many<0) {
$many == -2 && syntax("expected blank line before PGP signature");
while (<CDATA>) { last if m/^$/; }
$many= -2;
} elsif (m/^$/) {
$paraborder = 1;
if ($many>0) {
$index++; $cf='';
} elsif ($many == -2) {
$_= <CDATA> while defined($_) && $_ =~ /^\s*$/;
length($_) ||
&syntax("expected PGP signature, found EOF after blank line");
s/\n$//;
m/^-----BEGIN PGP/ ||
&syntax("expected PGP signature, found something else \`$_'");
$many= -3; last;
} else {
while (<CDATA>) {
/^\s*$/ ||
&syntax("found several \`paragraphs' where only one expected");
}
}
} else {
&syntax("line with unknown format (not field-colon-value)");
}
}
$many == -2 && &syntax("found start of PGP body but no signature");
if (length($cf)) { $index++; }
$index || &syntax("empty file");
return $index;
}
sub unknown {
my $field = $_;
&warn("unknown information field \`$field\' in input data in $_[0]");
}
sub syntax {
&error("syntax error in $whatmsg at line $.: $_[0]");
}
sub failure { die "$progname: failure: $_[0]\n"; }
sub syserr { die "$progname: failure: $_[0]: $!\n"; }
sub error { die "$progname: error: $_[0]\n"; }
sub internerr { die "$progname: internal error: $_[0]\n"; }
sub warn { warn "$progname: warning: $_[0]\n"; }
sub usageerr { print(STDERR "$progname: @_\n\n"); &usageversion; exit(2); }
sub warnerror { if ($warnable_error) { &warn( @_ ); } else { &error( @_ ); } }
sub subprocerr {
local ($p) = @_;
if (WIFEXITED($?)) {
die "$progname: failure: $p gave error exit status ".WEXITSTATUS($?)."\n";
} elsif (WIFSIGNALED($?)) {
die "$progname: failure: $p died from signal ".WTERMSIG($?)."\n";
} else {
die "$progname: failure: $p failed with unknown exit code $?\n";
}
}
1;
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