NAME

       Lintian::Collect::Binary - Lintian interface to binary package data collection

SYNOPSIS

           my ($name, $type, $dir) = ('foobar', 'binary', '/path/to/lab-entry');
           my $collect = Lintian::Collect->new ($name, $type, $dir);
           if ($collect->native) {
               print "Package is native\n";
           }

DESCRIPTION

       Lintian::Collect::Binary provides an interface to package data for binary packages.  It
       implements data collection methods specific to binary packages.

       This module is in its infancy.  Most of Lintian still reads all data from files in the
       laboratory whenever that data is needed and generates that data via collect scripts.  The
       goal is to eventually access all data about binary packages via this module so that the
       module can cache data where appropriate and possibly retire collect scripts in favor of
       caching that data in memory.

CLASS METHODS

       new (PACKAGE)
           Creates a new Lintian::Collect::Binary object.  Currently, PACKAGE is ignored.
           Normally, this method should not be called directly, only via the Lintian::Collect
           constructor.

INSTANCE METHODS

       In addition to the instance methods listed below, all instance methods documented in the
       Lintian::Collect and the Lintian::Collect::Package modules are also available.

       native
           Returns true if the binary package is native and false otherwise.  Nativeness will be
           judged by the source version number.

           If the version number is absent, this will return false (as native packages are a lot
           rarer than non-native ones).

           Needs-Info requirements for using native: Same as field

       changelog
           Returns the changelog of the binary package as a Parse::DebianChangelog object, or
           undef if the changelog doesn't exist.  The changelog-file collection script must have
           been run to create the changelog file, which this method expects to find in changelog.

           Needs-Info requirements for using changelog: changelog-file

       control ([FILE])
           This method is deprecated.  Consider using "control_index_resolved_path(PATH)"
           instead, which returns Lintian::Path objects.

           Returns the path to FILE in the control.tar.gz.  FILE must be either a Lintian::Path
           object (>= 2.5.13~) or a string denoting the requested path.  In the latter case, the
           path must be relative to the root of the control.tar.gz member and should be
           normalized.

           It is not permitted for FILE to be "undef".  If the "root" dir is desired either
           invoke this method without any arguments at all, pass it the correct Lintian::Path or
           the empty string.

           To get a list of entries in the control.tar.gz or the file meta data of the entries
           (as path objects), see "sorted_control_index" and "control_index (FILE)".

           The caveats of unpacked also apply to this method.  However, as the control.tar.gz is
           not known to contain symlinks, a simple file type check is usually enough.

           Needs-Info requirements for using control: bin-pkg-control

       control_index (FILE)
           Returns a path object to FILE in the control.tar.gz.  FILE must be relative to the
           root of the control.tar.gz and must be without leading slash (or "./").  If FILE is
           not in the control.tar.gz, it returns "undef".

           To get a list of entries in the control.tar.gz, see "sorted_control_index".  To
           actually access the underlying file (e.g. the contents), use "control ([FILE])".

           Note that the "root directory" (denoted by the empty string) will always be present,
           even if the underlying tarball omits it.

           Needs-Info requirements for using control_index: bin-pkg-control

       sorted_control_index
           Returns a sorted array of file names listed in the control.tar.gz.  The names will not
           have a leading slash (or "./") and can be passed to "control ([FILE])" or
           "control_index (FILE)" as is.

           The array will not contain the entry for the "root" of the control.tar.gz.

           Needs-Info requirements for using sorted_control_index: Same as control_index

       control_index_resolved_path(PATH)
           Resolve PATH (relative to the root of the package) and return the entry denoting the
           resolved path.

           The resolution is done using resolve_path.

           Needs-Info requirements for using control_index_resolved_path: Same as control_index

       strings (FILE)
           Returns an open handle, which will read the data from coll/strings for FILE.  If
           coll/strings did not collect any strings about FILE, this returns an open read handle
           with no content.

           Caller is responsible for closing the handle either way.

           Needs-Info requirements for using strings: strings

       scripts
           Returns a hashref mapping a FILE to its script/interpreter information (if FILE is a
           script).  If FILE is not a script, it is not in the hash (and callers should use
           exists to test membership to ensure this invariant holds).

           The value for a given FILE consists of a table with the following keys (and associated
           value):

           calls_env
               Returns a truth value if the script uses env (/usr/bin/env or /bin/env) in the
               "#!".  Otherwise it is "undef".

           interpreter
               This is the interpreter used.  If calls_env is true, this will be the first
               argument to env.  Otherwise it will be the command listed after the "#!".

               NB: Some template files have "#!" lines like "#!@PERL@" or "#!perl".  In this
               case, this value will be @PERL@ or perl (respectively).

           name
               Return the file name of the script.  This will be identical to key to look up this
               table.

           Needs-Info requirements for using scripts: scripts

       objdump_info
           Returns a hashref mapping a FILE to the data collected by objdump-info or "undef" if
           no data is available for that FILE.  Data is generally only collected for ELF files.

           Needs-Info requirements for using objdump_info: objdump-info

       hardening_info
           Returns a hashref mapping a FILE to its hardening issues.

           NB: This is generally only useful for checks/binaries to emit the hardening-no-* tags.

           Needs-Info requirements for using hardening_info: hardening-info

       java_info
           Returns a hashref containing information about JAR files found in binary packages, in
           the form file name -> info, where info is a hash containing the following keys:

           manifest
               A hash containing the contents of the JAR file manifest. For instance, to find the
               classpath of $file, you could use:

                if (exists $info->java_info->{$file}{'manifest'}) {
                    my $cp = $info->java_info->{$file}{'manifest'}{'Class-Path'};
                    # ...
                }

               NB: Not all jar files have a manifest.  For those without, this will value will
               not be available.  Use exists (rather than defined) to check for it.

           files
               A table of the files in the JAR.  Each key is a file name and its value is its
               "Major class version" for Java or "-" if it is not a class file.

           error
               If it exists, this is an error that occurred during reading of the zip file.  If
               it exists, it is unlikely that the other fields will be present.

           Needs-Info requirements for using java_info: java-info

       relation (FIELD)
           Returns a Lintian::Relation object for the specified FIELD, which should be one of the
           possible relationship fields of a Debian package or one of the following special
           values:

           all The concatenation of Pre-Depends, Depends, Recommends, and Suggests.

           strong
               The concatenation of Pre-Depends and Depends.

           weak
               The concatenation of Recommends and Suggests.

           If FIELD isn't present in the package, the returned Lintian::Relation object will be
           empty (always satisfied and implies nothing).

           Needs-Info requirements for using relation: Same as field

       is_pkg_class ([TYPE])
           Returns a truth value if the package is the given TYPE of special package.  TYPE can
           be one of "transitional", "debug" or "any-meta".  If omitted it defaults to "any-
           meta".  The semantics for these values are:

           transitional
               The package is (probably) a transitional package (e.g. it is probably empty, just
               depend on stuff will eventually disappear.)

               Guessed from package description.

           any-meta
               This package is (probably) some kind of meta or task package.  A meta package is
               usually empty and just depend on stuff.  It will also return a truth value for
               "tasks" (i.e. tasksel "tasks").

               A transitional package will also match this.

               Guessed from package description, section or package name.

           debug
               The package is (probably) a package containing debug symbols.

               Guessed from the package name.

           auto-generated
               The package is (probably) a package generated automatically (e.g. a dbgsym
               package)

               Guessed from the "Auto-Built-Package" field.

           Needs-Info requirements for using is_pkg_class: Same as field

       is_conffile (FILE)
           Returns a truth value if FILE is listed in the conffiles control file.  If the control
           file is not present or FILE is not listed in it, it returns "undef".

           Note that FILE should be the filename relative to the package root (even though the
           control file uses absolute paths).  If the control file does relative paths, they are
           assumed to be relative to the package root as well (and used without warning).

           Needs-Info requirements for using is_conffile: Same as control_index_resolved_path

AUTHOR

       Originally written by Frank Lichtenheld <djpig@debian.org> for Lintian.

SEE ALSO

       lintian(1), Lintian::Collect, Lintian::Relation