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.\" ========================================================================
.\"
.IX Title "tooloptions 3pm"
.TH tooloptions 3pm "2012-06-18" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Net::DNS::SEC::Tools::tooloptions \- DNSSEC\-Tools option routines.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  use Net::DNS::SEC::Tools::tooloptions;
\&
\&  @specopts = ("propagate+", "waittime=i");
\&
\&  %opts = opts_cmdline($restoreargv,@calleropts);
\&
\&  $optsref = opts_cmdopts(@specopts);
\&  %options = %$optsref;
\&
\&  $zoneref = opts_zonekr($keyrec_file,$keyrec_name,@specopts);
\&  %zone_kr = %$zoneref;
\&
\&  opts_setcsopts(@specopts);
\&
\&  opts_createkrf();
\&
\&  opts_suspend();
\&
\&  opts_restore();
\&
\&  opts_drop();
\&
\&  opts_reset();
\&
\&  opts_gui();
\&
\&  opts_nogui();
\&
\&  $oldaction = opts_onerr(1);
\&  opts_onerr(0);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
DNSSEC-Tools supports a set of options common to all the tools in the suite.
These options may be set from DNSSEC-Tools defaults, values set in the
\&\fBdnssec\-tools.conf\fR configuration file, in a \fIkeyrec\fR file, from
command-specific options, from command-line options, or from any combination
of the five.  In order to enforce a common sequence of option interpretation,
all DNSSEC-Tools should use the \fBtooloptions.pm\fR routines to initialize their
options.
.PP
\&\fBtooloptions.pm\fR routines combine data from the aforementioned option sources
into a hash table.  The hash table is returned to the caller, which will then
use the options as needed.
.PP
The command-line options are saved between calls, so a command may call
\&\fBtooloptions.pm\fR routines multiple times and still have the command-line
options included in the final hash table.  This is useful for examining
multiple \fIkeyrec\fRs in a single command.  Inclusion of command-line options
may be suspended and restored using the \fI\fIopts_suspend()\fI\fR and
\&\fI\fIopts_restore()\fI\fR calls.  Options may be discarded entirely by calling
\&\fI\fIopts_drop()\fI\fR; once dropped, command-line options may never be restored.
Suspension, restoration, and dropping of command-line options are only
effective after the initial \fBtooloptions.pm\fR call.
.PP
The options sources are combined in this order:
.IP "1.  DNSSEC-Tools Defaults" 4
.IX Item "1.  DNSSEC-Tools Defaults"
The DNSSEC-Tools defaults, as defined in \fBconf.pm\fR are put into a hash table,
with the option names as the hash key.
.IP "2.  DNSSEC-Tools Configuration File" 4
.IX Item "2.  DNSSEC-Tools Configuration File"
The system-wide DNSSEC-Tools configuration file is read and these option
values are added to the option collection.  Again, the option names are used
as the hash key.
.IP "3. \fIkeyrec\fR File" 4
.IX Item "3. keyrec File"
If a \fIkeyrec\fR file was specified, then the \fIkeyrec\fR named by \fIkeyrec_name\fR
will be retrieved.  The \fIkeyrec\fR's fields are added to the hash table.  Any
field whose keyword matches an existing hash key will override any existing
values.
.IP "4. Command-Specific Options" 4
.IX Item "4. Command-Specific Options"
Options specific to the invoking commands may be specified in \fI\f(CI@specopts\fI\fR.
This array is parsed by \fI\fIGetoptions()\fI\fR from the \fBGetopt::Long\fR Perl module.
These options are folded into the hash table; possibly overriding existing
hash values.  The options given in \fI\f(CI@specopts\fI\fR must be in the format required
by \fI\fIGetoptions()\fI\fR.
.IP "5. Command-Line Options" 4
.IX Item "5. Command-Line Options"
The command-line options are parsed using \fI\fIGetoptions()\fI\fR from the
\&\fBGetopt::Long\fR Perl module.  These options are folded into the hash table;
again, possibly overriding existing hash values.  The options given in
\&\fI\f(CI@specopts\fI\fR must be in the format required by \fI\fIGetoptions()\fI\fR.
.PP
A reference to the hash table created in these steps is returned to the caller.
.SH "EXAMPLE"
.IX Header "EXAMPLE"
\&\fBdnssec\-tools.conf\fR has these entries:
.PP
.Vb 2
\&    ksklength      2048
\&    zsklength      1024
.Ve
.PP
\&\fBexample.keyrec\fR has this entry:
.PP
.Vb 2
\&    key         "Kexample.com.+005+12345"
\&            zsklength        "2048"
.Ve
.PP
\&\fBzonesigner\fR is executed with this command line:
.PP
.Vb 1
\&    zonesigner \-zsklength 4096 \-wait 3600 ...  example.com
.Ve
.PP
\&\fIopts_zonekr(\*(L"example.keyrec\*(R",\*(L"Kexample.com.+005+12345\*(R",(\*(L"wait=i\*(R"))\fR
will read each option source in turn, ending up with:
    \fIksklength\fR          1024
    \fIzsklength\fR          4096
    \fIwait\fR                600
.SH "TOOLOPTIONS INTERFACES"
.IX Header "TOOLOPTIONS INTERFACES"
.IP "\fIopts_cmdline($restoreargv,@calleropts)\fR" 4
.IX Item "opts_cmdline($restoreargv,@calleropts)"
This routine parses a command line looking for the arguments in the standard
set of options and an optional set of options specified by the caller.  If the
first argument is true, the program-wide \f(CW@ARGV\fR is restored after parsing.  If
the caller provides other arguments, they're added as additional options.  The
parsed options are returned to the caller in a hash.
.IP "\fIopts_cmdopts(@csopts)\fR" 4
.IX Item "opts_cmdopts(@csopts)"
The \fI\fIopts_cmdopts()\fI\fR call builds an option hash from the system configuration
file, a \fIkeyrec\fR, and a set of command-specific options.  A reference to
this option hash is returned to the caller.
.Sp
If \fI\f(CI$keyrec_file\fI\fR is given as an empty string, then no \fIkeyrec\fR file will
be consulted.  In this case, it is assumed that \fI\f(CI$keyrec_name\fI\fR will be left
out altogether.
.Sp
If a non-existent \fI\f(CI$keyrec_file\fI\fR is given and \fI\fIopts_createkrf()\fI\fR has been
called, then the named \fIkeyrec\fR file will be created.  \fI\fIopts_createkrf()\fI\fR
must be called for each \fIkeyrec\fR file that must be created, as the
\&\fBtooloptions\fR \fIkeyrec\fR\-creation state is reset after \fB\f(BItooloptions()\fB\fR has
completed.
.IP "\fIopts_zonekr($keyrec_file,$keyrec_name,@csopts)\fR" 4
.IX Item "opts_zonekr($keyrec_file,$keyrec_name,@csopts)"
This routine returns a reference to options gathered from the basic option
sources and from the zone \fIkeyrec\fR named by \fI\f(CI$keyrec_name\fI\fR, which is found
in \fI\f(CI$keyrec_file\fI\fR.  The \fIkeyrec\fR fields from the zone's \s-1KSK\s0 and \s-1ZSK\s0 are
folded in as well, but the key's \fIkeyrec_\fR fields are excluded.  This
call ensures that the named \fIkeyrec\fR is a zone \fIkeyrec\fR; if it isn't,
\&\fIundef\fR is returned.
.Sp
The \fIkeyrec\fR file is read with \fI\fIkeyrec_read()\fI\fR.  To ensure it is properly
read, \fI\fIkeyrec_close()\fI\fR is called first.
.Sp
The \fI\f(CI$keyrec_file\fI\fR argument specifies a \fIkeyrec\fR file that will be
consulted.  The \fIkeyrec\fR named by the \fI\f(CI$keyrec_name\fI\fR argument will be
loaded.  If a \fIkeyrec\fR file is found and \fI\fIopts_createkrf()\fI\fR has been
previously called, then the \fIkeyrec\fR file will be created if it doesn't
exist.
.Sp
If \fI\f(CI$keyrec_file\fI\fR is given as "", then the command-line options are searched
for a \fI\-krfile\fR option.  If \fI\f(CI$keyrec_name\fI\fR is given as "", then the name is
taken from \fI\f(CI$ARGV\fI[0]\fR.
.Sp
The \fI\f(CI@specopts\fI\fR array contains command-specific arguments; the arguments must
be in the format prescribed by the \fBGetopt::Long\fR Perl module.
.Sp
If the command line contains the \fI\-dtconfig\fR option, then \fIopts_zonekr\fR()
sets that option to be the configuration file.  It then parses that file and
uses it as the source for configuration file data.
.IP "\fIopts_setcsopts(@csopts)\fR" 4
.IX Item "opts_setcsopts(@csopts)"
This routine saves a copy of the command-specific options given in \fI\f(CI@csopts\fI\fR.
This collection of options is added to the \fI\f(CI@csopts\fI\fR array that may be passed
to \fBtooloptions.pm\fR routines.
.IP "\fI\fIopts_createkrf()\fI\fR" 4
.IX Item "opts_createkrf()"
Force creation of an empty \fIkeyrec\fR file if the specified file does not
exist.  This may happen on calls to \fI\fIopts_zonekr()\fI\fR.
.IP "\fI\fIopts_suspend()\fI\fR" 4
.IX Item "opts_suspend()"
Suspend inclusion of the command-line options in building the final hash
table of responses.
.IP "\fI\fIopts_restore()\fI\fR" 4
.IX Item "opts_restore()"
Restore inclusion of the command-line options in building the final hash
table of responses.
.IP "\fI\fIopts_drop()\fI\fR" 4
.IX Item "opts_drop()"
Discard the command-line options.  They will no longer be available for
inclusion in building the final hash table of responses for this execution
of the command.
.IP "\fI\fIopts_reset()\fI\fR" 4
.IX Item "opts_reset()"
Reset an internal flag so that the command-line arguments may be
re-examined.  This is usually only useful if the arguments have been
modified by the calling program itself.
.IP "\fI\fIopts_gui()\fI\fR" 4
.IX Item "opts_gui()"
Set an internal flag so that command arguments may be specified with a \s-1GUI\s0.
\&\s-1GUI\s0 usage requires that \fBGetopt::GUI::Long\fR is available.  If it isn't, then
\&\fBGetopt::Long\fR will be used.
.IP "\fI\fIopts_nogui()\fI\fR" 4
.IX Item "opts_nogui()"
Set an internal flag so that the \s-1GUI\s0 will not be used for specifying
command arguments.
.IP "\fIopts_onerr(exitflag)\fR" 4
.IX Item "opts_onerr(exitflag)"
Set an internal flag indicating what should happen if an invalid option is
specified on the command line.  If \fIexitflag\fR is non-zero, then the process
will exit on an invalid option; if it is zero, then the process will not
exit.  The default action is to report an error without exiting.
.Sp
The old exit action is returned.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2005\-2012 \s-1SPARTA\s0, Inc.  All rights reserved.
See the \s-1COPYING\s0 file included with the DNSSEC-Tools package for details.
.SH "AUTHOR"
.IX Header "AUTHOR"
Wayne Morrison, tewok@tislabs.com
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fB\f(BIzonesigner\fB\|(8)\fR
.PP
\&\fB\f(BIGetopt::Long\fB\|(3)\fR
.PP
\&\fB\f(BINet::DNS::SEC::Tools::conf\fB\|(3)\fR,
\&\fB\f(BINet::DNS::SEC::Tools::defaults\fB\|(3)\fR,
\&\fB\f(BINet::DNS::SEC::Tools::keyrec\fB\|(3)\fR
.PP
\&\fB\f(BINet::DNS::SEC::Tools::keyrec\fB\|(5)\fR