mirror of
https://github.com/Project-OSS-Revival/alien.git
synced 2026-04-24 14:00:17 +00:00
Moving right along.. I've moved the fixfields code in now.
This commit is contained in:
joey
@@ -28,6 +28,15 @@ to build a package, and the package has been converted.
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=head1 FIELDS
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These fields are of course really just methods that all act similarly;
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allowing a value to be passed in to set them, or simply returning the value
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of the field if nothing is passed in. Child classes may override these
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fields to process input data, or to format output data. The general rule is
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that input data is modified to get things into a package-independant form,
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which is how the data is stored in the fields. When the value of a field is
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read, it too may be modified before it is returned, to change things into a
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form more suitable for the particular type of package.
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=over 4
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=item name
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@@ -136,6 +145,16 @@ having to write your own new() method.
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sub init {}
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=item install
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Simply installs the package. This has to be overridden in child classes.
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=cut
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sub install {
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my $this=shift;
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}
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=item read_file
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This method looks at the actual package file the package represents, and
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@@ -22,7 +22,7 @@ Alien::Package.
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=item have_dpkg_deb
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Set to a true value if dpkg-deb is available.
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Set to a true value if dpkg-deb is available.
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=back
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@@ -32,7 +32,8 @@ Set to a true value if dpkg-deb is available.
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=item init
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Sets have_dpkg_deb if dpkg-deb is in the path.
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Sets have_dpkg_deb if dpkg-deb is in the path. I prefer to use dpkg-deb,
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if it is available since it is a lot more future-proof.
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=cut
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@@ -49,13 +50,23 @@ sub init {
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}
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}
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=item install
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Install a deb with dpkg.
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=cut
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sub install {
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my $this=shift;
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system("dpkg --no-force-overwrite -i ".$this->filename) &&
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die "Unable to install: $!";
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}
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=item read_file
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Implement the read_file method to read a deb file.
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This uses either dpkg-deb, if it is present, or ar and tar if it is not.
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Using dpkg-deb is a lot more future-proof, but the system may not have it.
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=cut
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sub read_file {
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@@ -74,7 +85,11 @@ sub read_file {
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@control = `ar p $file control.tar.gz | tar Oxzf - control [./]control`;
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}
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# Parse control file and extract fields.
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# Parse control file and extract fields. Use a translation table
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# to map between the debian names and the internal field names,
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# which more closely resemble those used by rpm (for historical
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# reasons; TODO: change to deb style names).
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my $description='';
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my $field;
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my %fieldtrans=(
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Package => 'name',
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@@ -96,27 +111,17 @@ sub read_file {
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}
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}
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elsif (/^ / && $field eq 'summary') {
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# Handle xtended description.
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# Handle extended description.
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s/^ //g;
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$_="" if $_ eq ".";
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$this->description($this->description . $_. "\n");
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$description.="$_\n";
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}
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}
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$this->description($description);
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$this->copyright("see /usr/share/doc/".$this->name."/copyright");
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$this->group("unknown") if ! $this->group;
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$this->distribution("Debian");
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if ($this->version =~ /(.+)-(.+)/) {
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$this->version($1);
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$this->release($2);
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}
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else {
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$this->release(1);
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}
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# Kill epochs.
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if ($this->version =~ /\d+:(.*)/) {
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$this->version($1);
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}
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# Read in the list of conffiles, if any.
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my @conffiles;
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@@ -179,7 +184,123 @@ sub unpack {
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return 1;
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}
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=back
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=item package
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Set/get package name.
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Always returns the packge name in lowercase with all invalid characters
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returned. The name is however, stored unchanged.
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=cut
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sub name {
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my $this=shift;
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# set
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$this->{name} = shift if @_;
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return unless defined wantarray; # optimization
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# get
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$_=lc($this->{name});
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tr/_/-/;
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s/[^a-z0-9-\.\+]//g;
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return $_;
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}
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=item version
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Set/get package version.
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When the version is set, it will be stripped of any epoch. If there is a
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release, the release will be stripped away and used to set the release
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field as a side effect. Otherwise, the release will be set to 1.
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More sanitization of the version is done when the field is retrieved, to
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make sure it is a valid debian version field.
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=cut
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sub version {
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my $this=shift;
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# set
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if (@_) {
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my $version=shift;
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if ($version =~ /(.+)-(.+)/) {
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$version=$1;
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$this->release($2);
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}
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else {
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$this->release(1);
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}
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# Kill epochs.
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$version=~s/^\d+://;
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$this->{version}=$version;
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}
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# get
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return unless defined wantarray; # optimization
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$_=$this->{version};
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# Make sure the version contains digets.
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unless (/[0-9]/) {
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# Drat. Well, add some. dpkg-deb won't work
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# # on a version w/o numbers!
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return $_."0";
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}
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return $_;
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}
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=item release
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Set/get package release.
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Always returns a sanitized release version. The release is however, stored
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unchanged.
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=cut
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sub release {
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my $this=shift;
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# set
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$this->{release} = shift if @_;
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# get
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return unless defined wantarray; # optimization
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$_=$this->{release};
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# Make sure the release contains digets.
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return $_."-1" unless /[0-9]/;
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return $_;
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}
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=item description
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Set/get description
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Although the description is stored internally unchanged, this will always
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return a sanitized form of it that is compliant with Debian standards.
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=cut
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sub description {
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my $this=shift;
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# set
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$this->{description} = shift if @_;
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# get
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return unless defined wantarray; # optimization
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my $ret='';
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foreach (split /\n/,$this->{description}) {
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s/\t/ /g; # change tabs to spaces
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s/\s+$//g; # remove trailing whitespace
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$_="." if $_ eq ''; # empty lines become dots
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$ret.=" $_\n";
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}
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chomp $ret;
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return $ret;
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}
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=head1 AUTHOR
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@@ -32,6 +32,20 @@ The text of the changelog
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=over 4
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=item install
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Install a rpm. If RPMINSTALLOPT is set in the environement, the options in
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it are passed to rpm on its command line.
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=cut
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sub install {
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my $this=shift;
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system("rpm -ivh $ENV{RPMINSTALLOPT} ".$this->filename) &&
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die "Unable to install: $!";
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}
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=item read_file
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Implement the read_file method to read a rpm file.
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@@ -63,11 +77,6 @@ sub read_file {
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$this->$field($_) if $_ ne '(none)';
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}
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# Fix up the scripts - they are always shell scripts, so make them so.
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foreach my $field (qw{preinst postinst prerm postrm}) {
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$this->$field("$!/bin/sh\n".$this->field);
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}
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# Get the conffiles list.
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$this->conffiles([map { chomp; $_ } `rpm -qcp $file`]);
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@@ -104,10 +113,164 @@ sub read_file {
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return 1;
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}
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=item unpack
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Implement the unpack method to unpack a rpm file. This is a little nasty
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because it has to handle relocatable rpms and has to do a bit of
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permissions fixing as well.
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=cut
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sub unpack {
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my $this=shift;
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$this->SUPER::unpack(@_);
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my $workdir=$this->unpacked_tree;
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system ("rpm2cpio ".$this->filename." | (cd $workdir; cpio --extract --make-directories --no-absolute-filenames --preserve-modification-time) 2>/dev/null") &&
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die "Unpacking of `".$this->filename."' failed: $!";
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# If the package is relocatable. We'd like to move it to be under
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# the $this->prefixes directory. However, it's possible that that
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# directory is in the package - it seems some rpm's are marked as
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# relocatable and unpack already in the directory they can relocate
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# to, while some are marked relocatable and the directory they can
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# relocate to is removed from all filenames in the package. I
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# suppose this is due to some change between versions of rpm, but
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# none of this is adequatly documented, so we'll just muddle
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# through.
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#
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# Test to see if the package contains the prefix directory already.
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if (defined $this->prefixes && ! -e "$workdir/".$this->prefixes) {
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# Get the files to move.
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my $filelist=join ' ',glob("$workdir/*");
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# Now, make the destination directory.
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my $collect=$workdir;
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foreach (split m:/:, $this->prefixes) {
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if ($_ ne undef) { # this keeps us from using anything but relative paths.
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$collect.="$_/";
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mkdir $collect,0755 || die "unable to mkdir $collect: $!";
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}
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}
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# Now move all files in the package to the directory we made.
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system "mv $filelist $workdir/".$this->prefixes &&
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die "error moving unpacked files into the default prefix directory: $!";
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}
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# When cpio extracts the file, any child directories that are
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# present, but whose parent directories are not, end up mode 700.
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# This next block correctsthat to 755, which is more reasonable.
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#
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# Of course, this whole thing assumes we get the filelist in sorted
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# order.
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my $lastdir='';
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foreach my $file (@{$this->filelist}) {
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$file=~s/^\///;
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if (($lastdir && $file=~m:^\Q$lastdir\E/[^/]*$: eq undef) || !$lastdir) {
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# We've found one of the nasty directories. Fix it
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# up.
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#
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# Note that I strip the trailing filename off $file
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# here, for two reasons. First, it makes the loop
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# easier, we don't need to fix the perms on the
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# last file, after all! Second, it makes the -d
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# test below fire, which saves us from trying to
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# fix a parent directory twice.
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($file)=$file=~m:(.*)/.*?:;
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my $dircollect='';
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foreach my $dir (split(/\//,$file)) {
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$dircollect.="$dir/";
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chmod 0755,$dircollect; # TADA!
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}
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}
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$lastdir=$file if -d "./$file";
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}
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return 1;
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}
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=item version
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Set/get version.
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When retreiving the version, remove any dashes in it.
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=cut
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sub version {
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my $this=shift;
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# set
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$this->{version} = shift if @_;
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# get
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return unless defined wantarray; # optimization
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$_=$this->{version};
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tr/-/_/;
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return $_;
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}
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=item postinst
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=item postrm
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=item preinst
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=item prerm
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Set/get script fields.
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When retreiving a value, we have to do some truely sick mangling. Since
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debian/slackware scripts can be anything -- perl programs or binary files
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-- and rpm is limited to only shell scripts, we need to encode the files
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and add a scrap of shell script to make it unextract and run on the fly.
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=cut
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# This helper function deals with all the scripts.
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sub _script_helper {
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my $this=shift;
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my $script=shift;
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# set
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$this->{$script} = shift if @_;
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# get
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return unless defined wantarray; # optimization
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$_=$this->{$script};
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return $_ if ! defined $_ || m/^\s*$/;
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my $f = pack("u",$_);
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$f =~ s/%/%%/g; # Rpm expands %S, so escape such things.
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return "set -e\n".
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"mkdir /tmp/alien.\$\$\n".
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qq{perl -pe '\$_=unpack("u",\$_)' << '__EOF__' > /tmp/alien.\$\$/script\n}.
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$f."__EOF__\n".
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"chmod 755 /tmp/alien.\$\$/script\n".
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"/tmp/alien.\$\$/script \"\$@\"\n".
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"rm -f /tmp/alien.\$\$/script\n".
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"rmdir /tmp/alien.\$\$";
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}
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sub postinst {
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my $this=shift;
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$this->_script_helper($this, 'postinst', @_);
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}
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sub postrm {
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my $this=shift;
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$this->_script_helper($this, 'postrm', @_);
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}
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sub preinst {
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my $this=shift;
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$this->_script_helper($this, 'preinst', @_);
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}
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sub prerm {
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my $this=shift;
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$this->_script_helper($this, 'prerm', @_);
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}
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=item arch
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Set/get arch field. When the arch field is set, some sanitizing is done
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first.
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first to convert it to the debian format used internally.
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=cut
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@@ -136,7 +299,7 @@ sub arch {
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}
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# Treat 486, 586, etc, as 386.
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if ($arch =~ m/i\d86/) {
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if ($arch =~ m/i\d86/i || $arch =~ m/pentium/i) {
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$arch='i386';
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}
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Reference in New Issue
Block a user