move this code to go.wit.com/lib/hostname

Signed-off-by: Jeff Carr <jcarr@wit.com>

.gitignore

@@ -1 +1,10 @@
+*.swp
+go.sum
+go.mod
+
+control-panel-dns
+/files/*
+/*.deb
+/plugins/*
+
 control-panel-dns

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Makefile

@@ -0,0 +1,17 @@
+all: goimports vet
+
+vet:
+	GO111MODULE=off go vet
+
+goimports:
+	goimports -w *.go
+
+redomod:
+	rm -f go.*
+	goimports -w *.go
+	GO111MODULE= go mod init
+	GO111MODULE= go mod tidy
+
+clean:
+	-rm -f go.*
+	-go-mod-clean --purge

README.md

@@ -0,0 +1,3 @@
+# linuxstatus
+
+this is being moved to go.wit.com/lib/hostname

RFC-8482

@@ -0,0 +1,450 @@
+Internet Engineering Task Force (IETF)                          J. Abley
+Request for Comments: 8482                                       Afilias
+Updates: 1034, 1035                                       O. Gudmundsson
+Category: Standards Track                                   M. Majkowski
+ISSN: 2070-1721                                          Cloudflare Inc.
+                                                                 E. Hunt
+                                                                     ISC
+                                                            January 2019
+
+
+  Providing Minimal-Sized Responses to DNS Queries That Have QTYPE=ANY
+
+Abstract
+
+   The Domain Name System (DNS) specifies a query type (QTYPE) "ANY".
+   The operator of an authoritative DNS server might choose not to
+   respond to such queries for reasons of local policy, motivated by
+   security, performance, or other reasons.
+
+   The DNS specification does not include specific guidance for the
+   behavior of DNS servers or clients in this situation.  This document
+   aims to provide such guidance.
+
+   This document updates RFCs 1034 and 1035.
+
+Status of This Memo
+
+   This is an Internet Standards Track document.
+
+   This document is a product of the Internet Engineering Task Force
+   (IETF).  It represents the consensus of the IETF community.  It has
+   received public review and has been approved for publication by the
+   Internet Engineering Steering Group (IESG).  Further information on
+   Internet Standards is available in Section 2 of RFC 7841.
+
+   Information about the current status of this document, any errata,
+   and how to provide feedback on it may be obtained at
+   https://www.rfc-editor.org/info/rfc8482.
+
+
+Copyright Notice
+
+   Copyright (c) 2019 IETF Trust and the persons identified as the
+   document authors.  All rights reserved.
+
+   This document is subject to BCP 78 and the IETF Trust's Legal
+   Provisions Relating to IETF Documents
+   (https://trustee.ietf.org/license-info) in effect on the date of
+   publication of this document.  Please review these documents
+   carefully, as they describe your rights and restrictions with respect
+   to this document.  Code Components extracted from this document must
+   include Simplified BSD License text as described in Section 4.e of
+   the Trust Legal Provisions and are provided without warranty as
+   described in the Simplified BSD License.
+
+Table of Contents
+
+   1. Introduction ....................................................3
+      1.1. Terminology ................................................3
+   2. Motivations for Use of ANY Queries ..............................3
+   3. General Approach ................................................4
+   4. Behavior of DNS Responders ......................................5
+      4.1. Answer with a Subset of Available RRsets ...................5
+      4.2. Answer with a Synthesized HINFO RRset ......................5
+      4.3. Answer with Best Guess as to Intention .....................6
+      4.4. Transport Considerations ...................................6
+   5. Behavior of DNS Initiators ......................................7
+   6. HINFO Considerations ............................................7
+   7. Updates to RFCs 1034 and 1035 ...................................7
+   8. Implementation Experience .......................................8
+   9. Security Considerations .........................................8
+   10. IANA Considerations ............................................9
+   11. References .....................................................9
+      11.1. Normative References ......................................9
+      11.2. Informative References ....................................9
+   Acknowledgements ..................................................10
+   Authors' Addresses ................................................10
+
+
+1.  Introduction
+
+   The Domain Name System (DNS) specifies a query type (QTYPE) "ANY".
+   The operator of an authoritative DNS server might choose not to
+   respond to such queries for reasons of local policy, motivated by
+   security, performance, or other reasons.
+
+   The DNS specification [RFC1034] [RFC1035] does not include specific
+   guidance for the behavior of DNS servers or clients in this
+   situation.  This document aims to provide such guidance.
+
+1.1.  Terminology
+
+   This document uses terminology specific to the Domain Name System
+   (DNS), descriptions of which can be found in [RFC8499].
+
+   [RFC1035] defined type 255 to be "*".  However, DNS implementations
+   commonly use the keyword "ANY" to refer to that type code; this
+   document follows that common usage.
+
+   In this document, "ANY query" refers to a DNS meta-query with
+   QTYPE=ANY.  An "ANY response" is a response to such a query.
+
+   In this document, "conventional ANY response" means an ANY response
+   that is constructed in accordance with the algorithm documented in
+   Section 4.3.2 of [RFC1034] and specifically without implementing any
+   of the mechanisms described in this document.
+
+   In an exchange of DNS messages between two hosts, this document
+   refers to the host sending a DNS request as the "initiator" and the
+   host sending a DNS response as the "responder".
+
+   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
+   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
+   "OPTIONAL" in this document are to be interpreted as described in
+   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
+   capitals, as shown here.
+
+2.  Motivations for Use of ANY Queries
+
+   ANY queries are legitimately used for debugging and checking the
+   state of a DNS server for a particular name.
+
+   ANY queries are sometimes used as an attempt to reduce the number of
+   queries needed to get information, e.g., to obtain MX, A, and AAAA
+   resource record sets (RRsets) for a mail domain in a single query.
+   However, there is no documented guidance available for this use case,
+   and some implementations have been observed not to function as their
+
+   developers expected.  If implementers assume that an ANY query will
+   ultimately be received by an authoritative server and will fetch all
+   existing RRsets, they should include a fallback mechanism to use when
+   that does not happen.
+
+   ANY queries are frequently used to exploit the amplification
+   potential of DNS servers and resolvers using spoofed source addresses
+   and UDP transport (see [RFC5358]).  Having the ability to return
+   small responses to such queries makes DNS servers less attractive
+   amplifiers.
+
+   ANY queries are sometimes used to help mine authoritative-only DNS
+   servers for zone data, since they are expected to return all RRsets
+   for a particular query name.  If DNS operators prefer to reduce the
+   potential for information leaks, they might choose not to send large
+   ANY responses.
+
+   Some authoritative-only DNS server implementations require additional
+   processing in order to send a conventional ANY response; avoiding
+   that processing expense might be desirable.
+
+3.  General Approach
+
+   This proposal provides a mechanism for an authoritative DNS server to
+   signal that conventional ANY queries are not supported for a
+   particular QNAME.  It does so in a way that is both compatible with
+   and triggers desirable behavior by unmodified clients (e.g., DNS
+   resolvers).
+
+   Alternative proposals for dealing with ANY queries have been
+   discussed.  One approach proposes using a new RCODE to signal that an
+   authoritative server did not answer ANY queries in the standard way.
+   This approach was found to have an undesirable effect on both
+   resolvers and authoritative-only servers; resolvers receiving an
+   unknown RCODE would resend the same query to all available
+   authoritative servers rather than suppress future ANY queries for the
+   same QNAME.
+
+   The proposal described in this document avoids that outcome by
+   returning a non-empty RRset in the ANY response, which provides
+   resolvers with something to cache and effectively suppresses repeat
+   queries to the same or different authoritative DNS servers.
+
+
+4.  Behavior of DNS Responders
+
+   Below are the three different modes of behavior by DNS responders
+   when processing queries with QNAMEs that exist, QCLASS=IN, and
+   QTYPE=ANY.  Operators and implementers are free to choose whichever
+   mechanism best suits their environment.
+
+   1.  A DNS responder can choose to select one or a larger subset of
+       the available RRsets at the QNAME.
+
+   2.  A DNS responder can return a synthesized HINFO resource record.
+       See Section 6 for discussion of the use of HINFO.
+
+   3.  A resolver can try to give out the most likely records the
+       requester wants.  This is not always possible, and the result
+       might well be a large response.
+
+   Except as described below in this section, the DNS responder MUST
+   follow the standard algorithms when constructing a response.
+
+4.1.  Answer with a Subset of Available RRsets
+
+   A DNS responder that receives an ANY query MAY decline to provide a
+   conventional ANY response or MAY instead send a response with a
+   single RRset (or a larger subset of available RRsets) in the answer
+   section.
+
+   The RRsets returned in the answer section of the response MAY consist
+   of a single RRset owned by the name specified in the QNAME.  Where
+   multiple RRsets exist, the responder SHOULD choose a small subset of
+   those available to reduce the amplification potential of the
+   response.
+
+   If the zone is signed, appropriate RRSIG records MUST be included in
+   the answer.
+
+   Note that this mechanism does not provide any signaling to indicate
+   to a client that an incomplete subset of the available RRsets has
+   been returned.
+
+4.2.  Answer with a Synthesized HINFO RRset
+
+   If there is no CNAME present at the owner name matching the QNAME,
+   the resource record returned in the response MAY instead be
+   synthesized.  In this case, a single HINFO resource record SHOULD be
+   returned.  The CPU field of the HINFO RDATA SHOULD be set to
+   "RFC8482".  The OS field of the HINFO RDATA SHOULD be set to the null
+   string to minimize the size of the response.
+
+   The TTL encoded for the synthesized HINFO resource record SHOULD be
+   chosen by the operator of the DNS responder to be large enough to
+   suppress frequent subsequent ANY queries from the same initiator with
+   the same QNAME, understanding that a TTL that is too long might make
+   policy changes relating to ANY queries difficult to change in the
+   future.  The specific value used SHOULD be configurable by the
+   operator of the nameserver according to local policy, based on the
+   familiar considerations involved in choosing a TTL value for any
+   resource record in any zone.
+
+   If the DNS query includes DO=1 and the QNAME corresponds to a zone
+   that is known by the responder to be signed, a valid RRSIG for the
+   RRsets in the answer (or authority if answer is empty) section MUST
+   be returned.  In the case of DO=0, the RRSIG SHOULD be omitted.
+
+   A system that receives an HINFO response SHOULD NOT infer that the
+   response was generated according to this specification and apply any
+   special processing of the response because, in general, it is not
+   possible to tell with certainty whether the HINFO RRset received was
+   synthesized.  In particular, systems SHOULD NOT rely upon the HINFO
+   RDATA described in this section to distinguish between synthesized
+   and non-synthesized HINFO RRsets.
+
+4.3.  Answer with Best Guess as to Intention
+
+   In some cases, it is possible to guess what the initiator wants in
+   the answer (but not always).  Some implementations have implemented
+   the spirit of this document by returning all RRsets of RRTYPE CNAME,
+   MX, A, and AAAA that are present at the owner name while suppressing
+   others.  This heuristic seems to work well in practice; it satisfies
+   the needs of some applications whilst suppressing other RRsets such
+   as TXT and DNSKEY that can often contribute to large responses.
+   Whilst some applications may be satisfied by this behavior, the
+   resulting responses in the general case are larger than in the
+   approaches described in Sections 4.1 and 4.2.
+
+   As before, if the zone is signed and the DO bit is set on the
+   corresponding query, an RRSIG RRset MUST be included in the response.
+
+4.4.  Transport Considerations
+
+   A DNS responder MAY behave differently when processing ANY queries
+   received over different transports, e.g., by providing a conventional
+   ANY response over TCP whilst using one of the other mechanisms
+   specified in this document in the case where a query was received
+   using UDP.
+
+   Implementers MAY provide configuration options to allow operators to
+   specify different behavior over different transports.
+
+5.  Behavior of DNS Initiators
+
+   A DNS initiator that sends a query with QTYPE=ANY and receives a
+   response containing an HINFO resource record or a single RRset, as
+   described in Section 4, MAY cache the response in the normal way.
+   Such cached resource records SHOULD be retained in the cache
+   following normal caching semantics, as with any other response
+   received from a DNS responder.
+
+   A DNS initiator MAY suppress queries with QTYPE=ANY in the event that
+   the local cache contains a matching HINFO resource record with the
+   CPU field of the HINFO RDATA, as described in Section 4.  A DNS
+   initiator MAY instead respond to such queries with the contents of
+   the local cache in the usual way.
+
+6.  HINFO Considerations
+
+   It is possible that the synthesized HINFO RRset in an ANY response,
+   once cached by the initiator, might suppress subsequent queries from
+   the same initiator with QTYPE=HINFO.  Thus, the use of HINFO in this
+   proposal would effectively mask the HINFO RRset present in the zone.
+
+   Operators of authoritative servers who serve zones that rely upon
+   conventional use of the HINFO RRTYPE SHOULD sensibly choose the
+   "single RRset" method described in this document or select another
+   type.
+
+   The HINFO RRTYPE is believed to be rarely used in the DNS at the time
+   of writing, based on observations made in passive DNS and at
+   recursive and authoritative DNS servers.
+
+7.  Updates to RFCs 1034 and 1035
+
+   This document extends the specification for processing ANY queries
+   described in Section 4.3.2 of [RFC1034].
+
+   It is important to note that returning a subset of available RRsets
+   when processing an ANY query is legitimate and consistent with
+   [RFC1035]; it can be argued that ANY does not always mean ALL, as
+   used in Section 3.2.3 of [RFC1035].  The main difference here is that
+   the TC bit SHOULD NOT be set in the response, thus indicating that
+   this is not a complete answer.
+
+   This document describes optional behavior for both DNS initiators and
+   responders; implementation of the guidance provided by this document
+   is OPTIONAL.
+
+   RRSIG queries (i.e., queries with QTYPE=RRSIG) are similar to ANY
+   queries in the sense that they have the potential to generate large
+   responses as well as extra work for the responders that process them,
+   e.g., in the case where signatures are generated on the fly.  RRSIG
+   RRsets are not usually obtained using such explicit queries but are
+   rather included in the responses for other RRsets that the RRSIGs
+   cover.  This document does not specify appropriate behavior for RRSIG
+   queries; however, future such advice might well benefit from
+   consistency with and experience with the approaches for ANY queries
+   described here.
+
+8.  Implementation Experience
+
+   In October 2015, the Cloudflare authoritative nameserver
+   implementation implemented the HINFO response.  A few minor problems
+   were reported and have since been resolved.
+
+   An implementation of the subset-mode response to ANY queries was
+   implemented in NSD 4.1 in 2016.
+
+   An implementation of a single RRset response to an ANY query was made
+   for BIND9 by Tony Finch, and that functionality was subsequently made
+   available in production releases starting in BIND 9.11.
+
+9.  Security Considerations
+
+   Queries with QTYPE=ANY are frequently observed as part of reflection
+   attacks, since a relatively small query can be used to elicit a large
+   response.  This is a desirable characteristic if the goal is to
+   maximize the amplification potential of a DNS server as part of a
+   volumetric attack.  The ability of a DNS operator to suppress such
+   responses on a particular server makes that server a less useful
+   amplifier.
+
+   The optional behavior described in this document to reduce the size
+   of responses to queries with QTYPE=ANY is compatible with the use of
+   DNSSEC by both initiator and responder.
+
+
+10.  IANA Considerations
+
+   IANA has updated the following entry in the "Resource Record (RR)
+   TYPEs" registry [RR_TYPES]:
+
+   +------+-------+-------------------------------+--------------------+
+   | TYPE | Value | Meaning                       | Reference          |
+   +------+-------+-------------------------------+--------------------+
+   | *    | 255   | A request for some or all     | [RFC1035][RFC6895] |
+   |      |       | records the server has        | [RFC8482]          |
+   |      |       | available                     |                    |
+   +------+-------+-------------------------------+--------------------+
+
+11.  References
+
+11.1.  Normative References
+
+   [RFC1034]  Mockapetris, P., "Domain names - concepts and facilities",
+              STD 13, RFC 1034, DOI 10.17487/RFC1034, November 1987,
+              <https://www.rfc-editor.org/info/rfc1034>.
+
+   [RFC1035]  Mockapetris, P., "Domain names - implementation and
+              specification", STD 13, RFC 1035, DOI 10.17487/RFC1035,
+              November 1987, <https://www.rfc-editor.org/info/rfc1035>.
+
+   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
+              Requirement Levels", BCP 14, RFC 2119,
+              DOI 10.17487/RFC2119, March 1997,
+              <https://www.rfc-editor.org/info/rfc2119>.
+
+   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
+              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
+              May 2017, <https://www.rfc-editor.org/info/rfc8174>.
+
+11.2.  Informative References
+
+   [RFC5358]  Damas, J. and F. Neves, "Preventing Use of Recursive
+              Nameservers in Reflector Attacks", BCP 140, RFC 5358,
+              DOI 10.17487/RFC5358, October 2008,
+              <https://www.rfc-editor.org/info/rfc5358>.
+
+   [RFC6895]  Eastlake 3rd, D., "Domain Name System (DNS) IANA
+              Considerations", BCP 42, RFC 6895, DOI 10.17487/RFC6895,
+              April 2013, <https://www.rfc-editor.org/info/rfc6895>.
+
+   [RFC8499]  Hoffman, P., Sullivan, A., and K. Fujiwara, "DNS
+              Terminology", BCP 219, RFC 8499, DOI 10.17487/RFC8499,
+              January 2019, <https://www.rfc-editor.org/info/rfc8499>.
+
+   [RR_TYPES] IANA, "Domain Name System (DNS) Parameters",
+              <https://www.iana.org/assignments/dns-parameters>.
+
+Acknowledgements
+
+   David Lawrence provided valuable observations and concrete
+   suggestions.  Jeremy Laidman helped make the document better.  Tony
+   Finch realized that this document was valuable and implemented it
+   while under attack.  Richard Gibson identified areas where more
+   detail and accuracy were useful.  A large number of other people also
+   provided comments and suggestions; we thank them all for the
+   feedback.
+
+Authors' Addresses
+
+   Joe Abley
+   Afilias
+   300-184 York Street
+   London, ON  N6A 1B5
+   Canada
+
+   Phone: +1 519 670 9327
+   Email: jabley@afilias.info
+
+
+   Olafur Gudmundsson
+   Cloudflare Inc.
+
+   Email: olafur+ietf@cloudflare.com
+
+
+   Marek Majkowski
+   Cloudflare Inc.
+
+   Email: marek@cloudflare.com
+
+
+   Evan Hunt
+   ISC
+   950 Charter St
+   Redwood City, CA  94063
+   United States of America
+
+   Email: each@isc.org

args.go

@@ -0,0 +1,38 @@
+package linuxstatus
+
+/*
+	this enables command line options from other packages like 'gui' and 'log'
+*/
+
+import (
+	"go.wit.com/log"
+)
+
+var NOW *log.LogFlag
+var INFO *log.LogFlag
+var NET *log.LogFlag
+var DNS *log.LogFlag
+
+var PROC *log.LogFlag
+var SPEW *log.LogFlag
+var WARN *log.LogFlag
+
+var CHANGE *log.LogFlag
+var STATUS *log.LogFlag
+
+func init() {
+	full := "go.wit.com/control-panels/dns/linuxstatus"
+	short := "linux"
+
+	NOW = log.NewFlag("NOW", true, full, short, "temp debugging stuff")
+	INFO = log.NewFlag("INFO", false, full, short, "normal debugging stuff")
+	NET = log.NewFlag("NET", false, full, short, "Network logging")
+	DNS = log.NewFlag("DNS", false, full, short, "dnsStatus.update()")
+
+	PROC = log.NewFlag("PROC", false, full, short, "/proc loggging")
+	WARN = log.NewFlag("WARN", true, full, short, "bad things")
+	SPEW = log.NewFlag("SPEW", false, full, short, "spew stuff")
+
+	CHANGE = log.NewFlag("CHANGE", true, full, short, "when host or dns change")
+	STATUS = log.NewFlag("STATUS", false, full, short, "Update() details")
+}

common.go

@@ -0,0 +1,63 @@
+// This creates a simple hello world window
+package linuxstatus
+
+import (
+	"go.wit.com/log"
+)
+
+// reports externally if something has changed
+// since the last time it was asked about it
+func (ls *LinuxStatus) Changed() bool {
+	if !ls.Ready() {
+		return false
+	}
+	if ls.changed {
+		ls.changed = false
+		return true
+	}
+	return false
+}
+
+func (ls *LinuxStatus) Show() {
+	if !ls.Ready() {
+		return
+	}
+	log.Log(CHANGE, "Show() window ready =", ls.ready)
+	ls.window.Show()
+	ls.hidden = false
+}
+
+func (ls *LinuxStatus) Hide() {
+	if !ls.Ready() {
+		return
+	}
+	log.Log(CHANGE, "Hide() window ready =", ls.ready)
+	ls.window.Hide()
+	ls.hidden = true
+}
+
+func (ls *LinuxStatus) Toggle() {
+	if !ls.Ready() {
+		return
+	}
+	log.Log(CHANGE, "Toggle() window ready =", ls.ready)
+	if ls.hidden {
+		ls.Show()
+	} else {
+		ls.Hide()
+	}
+}
+
+func (ls *LinuxStatus) Ready() bool {
+	log.Log(SPEW, "Ready() maybe not ready? ls =", ls)
+	if me == nil {
+		return false
+	}
+	if ls == nil {
+		return false
+	}
+	if ls.window == nil {
+		return false
+	}
+	return me.ready
+}

debian/Makefile

@@ -1,47 +0,0 @@
-# GITVERSION=$(shell git rev-parse FETCH_HEAD)
-VERSION=$(shell git describe --tags $(git rev-list --tags --max-count=1) | sed 's/^v//')
-
-BASENAME=control-panel-dns
-
-all: help deb
-
-help:
-	@echo
-	@echo "make deb     # attempt to build the .deb package using dpkg"
-	@echo
-
-deb: clean extract DEBIAN build
-
-clean:
-	rm -rf ../files
-	rm -f ../*.deb
-	rm -f ../*.tar.xz data.tar.xz
-	rm -rf DEBIAN
-
-extract:
-	mkdir -p ../files/usr/bin
-	cp  ../control-panel-dns ../files/usr/bin/
-
-# makes the DEBIAN/ directory
-DEBIAN:
-	mkdir -p DEBIAN
-
-	# make the md5sum file
-	cd ../files/ && find -type f -exec md5sum '{}' \; |sort -k2 >../md5sums
-	mv ../md5sums DEBIAN/
-
-	# make the control there
-	mkdir -p DEBIAN
-	cp control DEBIAN/
-	echo Version: ${VERSION} >>DEBIAN/control
-
-	cp postinst DEBIAN
-
-build:
-	mv DEBIAN ../files/
-	cd .. && dpkg-deb --build files ${BASENAME}_${VERSION}_amd64.deb
-	@echo
-	@echo '#######################'
-	cd .. && dpkg-deb --info ${BASENAME}_${VERSION}_amd64.deb
-	@echo '#######################'
-	@echo

debian/compat

@@ -1 +0,0 @@
-10

debian/control

@@ -1,9 +0,0 @@
-Source: go-wit-gui
-Build-Depends: golang
-Package: go-wit-gui 
-Maintainer: Jeff Carr <jcarr@wit.com>
-Architecture: amd64
-Depends:
-Recommends: libgtk-3-0
-Description: a abstraction layer for Go visual elements (GTK, QT, etc)
- Package gui implements a abstraction layer for Go visual elements.

debian/postinst

@@ -1 +0,0 @@
-#!/bin/sh

draw.go

@@ -0,0 +1,36 @@
+// This creates a simple hello world window
+package linuxstatus
+
+import (
+	"go.wit.com/lib/gadgets"
+)
+
+// creates the actual widgets.
+// it's assumed you are always passing in a box
+func draw(ls *LinuxStatus) {
+	ls.group = ls.window.Box().NewGroup("What Linux Knows It Is")
+
+	ls.grid = ls.group.NewGrid("gridnuts", 2, 2)
+
+	ls.hostnameStatus = gadgets.NewOneLiner(ls.grid, "status")
+	ls.hostname = gadgets.NewOneLiner(ls.grid, "hostname -f")
+	ls.hostshort = gadgets.NewOneLiner(ls.grid, "hostname -s")
+	ls.domainname = gadgets.NewOneLiner(ls.grid, "domain name")
+	ls.resolver = gadgets.NewOneLiner(ls.grid, "nameservers =")
+	ls.resolver.SetText("TODO")
+	ls.uid = gadgets.NewOneLiner(ls.grid, "UID =")
+	ls.IPv4 = gadgets.NewOneLiner(ls.grid, "Current IPv4 =")
+	ls.IPv6 = gadgets.NewOneLiner(ls.grid, "Current IPv6 =")
+	ls.workingIPv4 = gadgets.NewOneLiner(ls.grid, "Real IPv4 =")
+	ls.workingIPv6 = gadgets.NewOneLiner(ls.grid, "Real IPv6 =")
+	// ls.nics		= gadgets.NewOneLiner(ls.grid, "network intefaces =")
+
+	ls.grid.NewLabel("interfaces =")
+	ls.Interfaces = ls.grid.NewCombobox()
+
+	ls.speed = gadgets.NewOneLiner(ls.grid, "refresh speed =")
+	ls.speedActual = gadgets.NewOneLiner(ls.grid, "refresh speed =")
+
+	ls.grid.Margin()
+	ls.grid.Pad()
+}

hostname.go

@@ -0,0 +1,195 @@
+// figures out if your hostname is valid
+// then checks if your DNS is setup correctly
+package linuxstatus
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strings"
+
+	"go.wit.com/lib/gui/shell"
+	"go.wit.com/log"
+
+	// will try to get this hosts FQDN
+	"github.com/Showmax/go-fqdn"
+)
+
+func (ls *LinuxStatus) GetDomainName() string {
+	if !me.Ready() {
+		return ""
+	}
+	return me.domainname.String()
+}
+
+func (ls *LinuxStatus) setDomainName() {
+	if !me.Ready() {
+		return
+	}
+
+	dn := run("domainname")
+	if me.domainname.String() != dn {
+		log.Log(CHANGE, "domainname has changed from", me.GetDomainName(), "to", dn)
+		me.domainname.SetText(dn)
+		me.changed = true
+	}
+}
+
+func (ls *LinuxStatus) GetHostname() string {
+	if !me.Ready() {
+		return ""
+	}
+	return me.hostname.String()
+}
+
+func (ls *LinuxStatus) ValidHostname() bool {
+	if !me.Ready() {
+		log.Info("ValidHostname() not ready")
+		return false
+	}
+	if me.hostnameStatus.String() == "WORKING" {
+		return true
+	}
+	return false
+}
+
+func (ls *LinuxStatus) setHostname(newname string) {
+	if !me.Ready() {
+		return
+	}
+	if newname == me.hostname.String() {
+		return
+	}
+	log.Log(CHANGE, "hostname has changed from", me.GetHostname(), "to", newname)
+	me.hostname.SetText(newname)
+	me.changed = true
+}
+
+func (ls *LinuxStatus) GetHostShort() string {
+	if !me.Ready() {
+		return ""
+	}
+	return me.hostshort.String()
+}
+
+func (ls *LinuxStatus) setHostShort() {
+	if !me.Ready() {
+		return
+	}
+	hshort := run("hostname -s")
+	if me.hostshort.String() != hshort {
+		log.Log(CHANGE, "hostname -s has changed from", me.hostshort.String(), "to", hshort)
+		me.hostshort.SetText(hshort)
+		me.changed = true
+	}
+}
+
+// getDomainName extracts the domain name from a given hostname
+func getDomainName(hostname string) (string, error) {
+	parts := strings.Split(hostname, ".")
+	if len(parts) < 3 {
+		return "", fmt.Errorf("hostname '%s' is too short to extract a domain name", hostname)
+	}
+	// Join all parts except the first one, which is assumed to be a subdomain
+	domain := strings.Join(parts[1:], ".")
+	return domain, nil
+}
+
+func lookupHostname() {
+	if !me.Ready() {
+		return
+	}
+	var err error
+	var hostfqdn string = "broken"
+	hostfqdn, err = fqdn.FqdnHostname()
+	if err != nil {
+		log.Error(err, "FQDN hostname error")
+		return
+	}
+	log.Log(NET, "full hostname should be: ", hostfqdn)
+
+	me.setDomainName()
+	me.setHostShort()
+
+	// these are authoritative
+	// if they work wrong, your linux configuration is wrong.
+	// Do not complain.
+	// Fix your distro if your box is otherwise not working this way
+	hshort := me.GetHostShort()  // from `hostname -s`
+	dn := me.GetDomainName()     // from `domanname`
+	hostname := me.GetHostname() // from `hostname -f`
+
+	if hostfqdn != hostname {
+		log.Log(WARN, "hostname", hostname, "does not equal fqdn.FqdnHostname()", hostfqdn)
+		// TODO: figure out what is wrong
+		if dn == "(none)" {
+			realdn, err := getDomainName(hostfqdn)
+			if err == nil {
+				log.Log(WARN, "need to run: 'domainname", realdn, "' here")
+				me.changed = true
+				me.hostnameStatus.SetText("FIXING")
+				shell.Run([]string{"domainname", realdn})
+				return
+			} else {
+				log.Log(WARN, "getDomainName() err =", err)
+				log.Log(WARN, "/etc/hostname is too short. let the user set the name here.")
+				// me.changed = true
+				me.hostnameStatus.SetText("INVALID DOMAIN NAME")
+				// return
+			}
+		}
+		log.Log(WARN, "don't know what to do here with domainname")
+		log.Log(WARN, "check that /etc/hostname is valid?")
+		// me.changed = true
+		me.hostnameStatus.SetText("UNKNOWN")
+		// return
+	}
+
+	var test string
+	test = hshort + "." + dn
+
+	me.setHostname(test)
+
+	if hostname != test {
+		log.Log(CHANGE, "hostname", hostname, "does not equal", test)
+		if me.hostnameStatus.String() != "BROKEN" {
+			log.Log(CHANGE, "hostname", hostname, "does not equal", test)
+			me.changed = true
+			me.hostnameStatus.SetText("BROKEN")
+		}
+	} else {
+		if me.hostnameStatus.String() != "WORKING" {
+			log.Log(CHANGE, "hostname", hostname, "is valid")
+			me.hostnameStatus.SetText("WORKING")
+			me.changed = true
+		}
+	}
+}
+
+// returns true if the hostname is good
+// check that all the OS settings are correct here
+// On Linux, /etc/hosts, /etc/hostname
+//
+//	and domainname and hostname
+func goodHostname() bool {
+	content, err := ioutil.ReadFile("/etc/hostname")
+	if err != nil {
+		// this needs to be a fixWindow() error
+		log.Error(err)
+	}
+
+	hostname := string(content)
+
+	log.Log(NOW, "hostname =", hostname)
+
+	hs := run("hostname -s")
+	dn := run("domainname")
+	log.Log(NOW, "hostname short =", hs, "domainname =", dn)
+
+	tmp := hs + "." + dn
+	if hostname == tmp {
+		log.Log(NOW, "hostname seems to be good", hostname)
+		return true
+	}
+
+	return false
+}

linuxloop.go

@@ -0,0 +1,99 @@
+// GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007
+// Copyright (c) 2023 WIT.COM, Inc.
+
+// This is a control panel for DNS
+
+// This is the main Linux kernel / OS code
+// to check your network settings are correct
+// This does (and should do) no network or external checking
+// This is just the state of your OS
+
+package linuxstatus
+
+import (
+	"io/ioutil"
+	"os"
+	"os/user"
+	"sort"
+	"strconv"
+	"strings"
+
+	"go.wit.com/log"
+)
+
+func linuxLoop() {
+	me.changed = false
+
+	// checks for a VALID hostname
+	lookupHostname()
+	if me.changed {
+		log.Log(CHANGE, "lookupHostname() detected a change")
+	}
+
+	// scans the linux network intefaces for your available IPv4 & IPv6 addresses
+	scanInterfaces()
+	if me.changed {
+		log.Log(CHANGE, "scanInterfaces() detected a change")
+	}
+	for i, t := range me.ifmap {
+		log.Log(NET, strconv.Itoa(i)+" iface = "+t.iface.Name)
+	}
+
+	// get all the real A records from all the network interfaces linux can see
+	a := realA()
+	sort.Strings(a)
+	tmp := strings.Join(a, "\n")
+	if tmp != me.workingIPv4.String() {
+		log.Log(CHANGE, "realA() your real IPv6 addresses changed")
+		me.changed = true
+		me.workingIPv4.SetText(tmp)
+	}
+
+	// get all the real AAAA records from all the network interfaces linux can see
+	aaaa := realAAAA()
+	sort.Strings(aaaa)
+	tmp = strings.Join(aaaa, "\n")
+	if tmp != me.workingIPv6.String() {
+		log.Log(CHANGE, "realAAAA() your real IPv6 addresses changed")
+		me.changed = true
+		me.workingIPv6.SetText(tmp)
+	}
+
+	user, _ := user.Current()
+	tmp = user.Username + " (" + strconv.Itoa(os.Getuid()) + ")"
+	if tmp != me.uid.String() {
+		log.Log(CHANGE, "os.Getuid =", user.Username, os.Getuid())
+		me.changed = true
+		me.uid.SetText(tmp)
+	}
+
+	content, _ := ioutil.ReadFile("/etc/resolv.conf")
+	var ns []string
+	for _, line := range strings.Split(string(content), "\n") {
+		parts := strings.Split(line, " ")
+		if len(parts) > 1 {
+			if parts[0] == "nameserver" {
+				ns = append(ns, parts[1])
+			}
+		}
+	}
+	sort.Strings(ns)
+	newNS := strings.Join(ns, "\n")
+	if newNS != me.resolver.String() {
+		log.Log(CHANGE, "resolver changed in /etc/resolv.conf to", ns)
+		me.changed = true
+		me.resolver.SetText(newNS)
+	}
+
+	/*
+		processName := getProcessNameByPort(53)
+		fmt.Println("Process with port 53:", processName)
+
+		commPath := filepath.Join("/proc", proc.Name(), "comm")
+		comm, err := ioutil.ReadFile(commPath)
+		if err != nil {
+			return "", err // Error reading the process name
+		}
+		return strings.TrimSpace(string(comm)), nil
+	*/
+}

net.go

@@ -0,0 +1,295 @@
+// This creates a simple hello world window
+package linuxstatus
+
+import (
+	// "log"
+	"net"
+	"sort"
+	"strings"
+
+	"go.wit.com/log"
+)
+
+func IsIPv6(address string) bool {
+	return strings.Count(address, ":") >= 2
+}
+
+func (t *IPtype) IsReal() bool {
+	if t.ip.IsPrivate() || t.ip.IsLoopback() || t.ip.IsLinkLocalUnicast() {
+		log.Log(NET, "\t\tIP is Real = false")
+		return false
+	} else {
+		log.Log(NET, "\t\tIP is Real = true")
+		return true
+	}
+}
+
+func IsReal(ip *net.IP) bool {
+	if ip.IsPrivate() || ip.IsLoopback() || ip.IsLinkLocalUnicast() {
+		log.Log(NET, "\t\tIP is Real = false")
+		return false
+	} else {
+		log.Log(NET, "\t\tIP is Real = true")
+		return true
+	}
+}
+
+func renameInterface(i *net.Interface) {
+	/*
+		/sbin/ip link set eth1 down
+		/sbin/ip link set eth1 name eth123
+		/sbin/ip link set eth123 up
+	*/
+}
+
+// Will figure out if an interface was just added
+func checkInterface(i net.Interface) {
+	val, ok := me.ifmap[i.Index]
+	if !ok {
+		log.Log(INFO, i.Name, "is a new network interface. The linux kernel index =", i.Index)
+		me.ifmap[i.Index] = new(IFtype)
+		me.ifmap[i.Index].gone = false
+		me.ifmap[i.Index].iface = &i
+		me.changed = true
+		if me.Interfaces != nil {
+			me.Interfaces.AddText(i.Name)
+			me.Interfaces.SetText(i.Name)
+		}
+		return
+	}
+	me.ifmap[i.Index].gone = false
+	log.Log(NET, "me.ifmap[i] does exist. Need to compare everything.", i.Index, i.Name, val.iface.Index, val.iface.Name)
+	if val.iface.Name != i.Name {
+		log.Log(INFO, val.iface.Name, "has changed to it's name to", i.Name)
+		me.ifmap[i.Index].iface = &i
+		me.changed = true
+		if me.Interfaces != nil {
+			me.Interfaces.AddText(i.Name)
+			me.Interfaces.SetText(i.Name)
+		}
+		return
+	}
+}
+
+/*
+These are the real IP address you have been
+given from DHCP
+*/
+func realAAAA() []string {
+	var aaaa []string
+
+	for s, t := range me.ipmap {
+		if t.IsReal() {
+			if t.ipv6 {
+				aaaa = append(aaaa, s)
+			}
+		}
+	}
+	return aaaa
+}
+
+func realA() []string {
+	var a []string
+
+	for s, t := range me.ipmap {
+		if t.IsReal() {
+			if t.ipv4 {
+				a = append(a, s)
+			}
+		}
+	}
+	return a
+}
+
+func checkDNSOld() (map[string]*IPtype, map[string]*IPtype) {
+	var ipv4s map[string]*IPtype
+	var ipv6s map[string]*IPtype
+
+	ipv4s = make(map[string]*IPtype)
+	ipv6s = make(map[string]*IPtype)
+
+	for s, t := range me.ipmap {
+		i := t.iface
+		ipt := "IPv4"
+		if t.ipv6 {
+			ipt = "IPv6"
+		}
+		if t.IsReal() {
+			log.Log(INFO, "\tIP is Real    ", ipt, i.Index, i.Name, s)
+			if t.ipv6 {
+				ipv6s[s] = t
+			} else {
+				ipv4s[s] = t
+			}
+		} else {
+			log.Log(INFO, "\tIP is not Real", ipt, i.Index, i.Name, s)
+		}
+	}
+	return ipv6s, ipv4s
+}
+
+// Will figure out if an IP address is new
+func checkIP(ip *net.IPNet, i net.Interface) bool {
+	log.Log(NET, "\t\taddr.(type) = *net.IPNet")
+	log.Log(NET, "\t\taddr.(type) =", ip)
+	var realip string
+	realip = ip.IP.String()
+
+	val, ok := me.ipmap[realip]
+	if ok {
+		log.Log(NET, val.ipnet.IP.String(), "is already a defined IP address")
+		me.ipmap[realip].gone = false
+		return false
+	}
+
+	me.ipmap[realip] = new(IPtype)
+	me.ipmap[realip].gone = false
+	me.ipmap[realip].ipv4 = true
+	me.ipmap[realip].ipnet = ip
+	me.ipmap[realip].ip = ip.IP
+	me.ipmap[realip].iface = &i
+	t := "IPv4"
+	if IsIPv6(ip.String()) {
+		me.ipmap[realip].ipv6 = true
+		me.ipmap[realip].ipv4 = false
+		t = "IPv6"
+		if me.IPv6 != nil {
+			me.IPv6.SetText(realip)
+		}
+	} else {
+		me.ipmap[realip].ipv6 = false
+		me.ipmap[realip].ipv4 = true
+		if me.IPv4 != nil {
+			me.IPv4.SetText(realip)
+		}
+	}
+	if IsReal(&ip.IP) {
+		log.Log(INFO, "\tIP is Real    ", t, i.Index, i.Name, realip)
+	} else {
+		log.Log(INFO, "\tIP is not Real", t, i.Index, i.Name, realip)
+	}
+	log.Log(NET, "\t\tIP is IsPrivate() =", ip.IP.IsPrivate())
+	log.Log(NET, "\t\tIP is IsLoopback() =", ip.IP.IsLoopback())
+	log.Log(NET, "\t\tIP is IsLinkLocalUnicast() =", ip.IP.IsLinkLocalUnicast())
+	// log.Log(INFO, "HERE HERE", "realip =", realip, "me.ip[realip]=", me.ipmap[realip])
+	return true
+}
+
+func scanInterfaces() {
+	log.Log(NET, "scanInterfaces() START")
+	ifaces, _ := net.Interfaces()
+	// me.ifnew = ifaces
+	log.Log(NET, SPEW, ifaces)
+	for _, i := range ifaces {
+		addrs, _ := i.Addrs()
+		// log.Log(INFO, "range ifaces = ", i)
+		checkInterface(i)
+		log.Log(NET, "*net.Interface.Name = ", i.Name, i.Index)
+		log.Log(NET, SPEW, i)
+		log.Log(NET, SPEW, addrs)
+		for _, addr := range addrs {
+			log.Log(NET, "\taddr =", addr)
+			log.Log(NET, SPEW, addrs)
+			ips, _ := net.LookupIP(addr.String())
+			log.Log(NET, "\tLookupIP(addr) =", ips)
+			switch v := addr.(type) {
+			case *net.IPNet:
+				if checkIP(v, i) {
+					log.Log(NET, "scanInterfaces() IP is new () i =", v.IP.String())
+				}
+			default:
+				log.Log(NET, "\t\taddr.(type) = NO IDEA WHAT TO DO HERE v =", v)
+			}
+		}
+	}
+	if deleteChanges() {
+		me.changed = true
+		log.Log(NET, "deleteChanges() detected network changes")
+	}
+	updateRealAAAA()
+	log.Log(NET, "scanInterfaces() END")
+}
+
+// displays the IP address found on your network interfaces
+func updateRealAAAA() {
+	var all4 []string
+	var all6 []string
+	for s, t := range me.ipmap {
+		if t.ipv4 {
+			all4 = append(all4, s)
+			log.Log(NET, "IPv4 =", s)
+		} else if t.ipv6 {
+			all6 = append(all6, s)
+			log.Log(NET, "IPv6 =", s)
+		} else {
+			log.Log(NET, "???? =", s)
+		}
+	}
+
+	// sort and create text
+	sort.Strings(all4)
+	sort.Strings(all6)
+	s4 := strings.Join(all4, "\n")
+	s6 := strings.Join(all6, "\n")
+
+	if me.IPv4.String() != s4 {
+		log.Log(CHANGE, "IPv4 addresses have changed", s4)
+		me.IPv4.SetText(s4)
+		me.changed = true
+	}
+	if me.IPv6.String() != s6 {
+		log.Log(CHANGE, "IPv6 addresses have changed", s6)
+		me.IPv6.SetText(s6)
+		me.changed = true
+	}
+}
+
+// delete network interfaces and ip addresses from the gui
+func deleteChanges() bool {
+	var changed bool = false
+	for i, t := range me.ifmap {
+		if t.gone {
+			log.Log(CHANGE, "DELETE int =", i, "name =", t.name, t.iface)
+			delete(me.ifmap, i)
+			changed = true
+		}
+		t.gone = true
+	}
+	for s, t := range me.ipmap {
+		if t.gone {
+			log.Log(CHANGE, "DELETE name =", s, "IPv4 =", t.ipv4)
+			log.Log(CHANGE, "DELETE name =", s, "IPv6 =", t.ipv6)
+			log.Log(CHANGE, "DELETE name =", s, "iface =", t.iface)
+			log.Log(CHANGE, "DELETE name =", s, "ip =", t.ip)
+			delete(me.ipmap, s)
+			changed = true
+		}
+		t.gone = true
+	}
+
+	return changed
+}
+
+func (ls *LinuxStatus) GetIPv6() []string {
+	if !me.Ready() {
+		return nil
+	}
+	tmp := me.workingIPv6.String()
+	return strings.Split(tmp, "\n")
+}
+
+func (ls *LinuxStatus) GetIPv4() []string {
+	if !me.Ready() {
+		return nil
+	}
+	tmp := me.workingIPv4.String()
+	return strings.Split(tmp, "\n")
+}
+
+func (ls *LinuxStatus) GetNameservers() []string {
+	if !me.Ready() {
+		return nil
+	}
+	tmp := me.resolver.String()
+	return strings.Split(tmp, "\n")
+}

new.go

@@ -0,0 +1,29 @@
+// This creates a simple hello world window
+package linuxstatus
+
+import (
+	"go.wit.com/log"
+
+	"go.wit.com/lib/gadgets"
+)
+
+func InitLinuxStatus() *LinuxStatus {
+	if me != nil {
+		log.Log(WARN, "You have done New() twice. You can only do this once")
+		return me
+	}
+	me = &LinuxStatus{
+		hidden: true,
+		ready:  false,
+	}
+	me.ifmap = make(map[int]*IFtype)
+	me.ipmap = make(map[string]*IPtype)
+
+	log.Log(WARN, "Creating the Window")
+	me.window = gadgets.RawBasicWindow("OS Hostname Details")
+	me.window.Make()
+	draw(me)
+
+	me.ready = true
+	return me
+}

proc.go

@@ -0,0 +1,101 @@
+package linuxstatus
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"go.wit.com/log"
+)
+
+func GetProcessNameByPort(port int) string {
+	// Convert port to hex string
+	portHex := strconv.FormatInt(int64(port), 16)
+
+	// Function to search /proc/net/tcp or /proc/net/udp
+	searchProcNet := func(file string) string {
+		data, err := ioutil.ReadFile(file)
+		if err != nil {
+			return ""
+		}
+		// log.Log(PROC, "searchProcNet() data:", string(data))
+
+		lines := strings.Split(string(data), "\n")
+		for _, line := range lines {
+			fields := strings.Fields(line)
+			log.Log(PROC, "searchProcNet() portHex:", portHex)
+			if len(fields) > 9 {
+				log.Log(PROC, "searchProcNet() fields[9]", fields[9])
+			}
+			log.Log(PROC, "searchProcNet() lines:", line)
+			if len(fields) > 1 {
+				parts := strings.Split(fields[1], ":")
+				if len(parts) > 1 {
+					// Convert the hexadecimal string to an integer
+					value, _ := strconv.ParseInt(parts[1], 16, 64)
+					log.Log(PROC, "searchProcNet() value, port =", value, port, "parts[1] =", parts[1])
+					if port == int(value) {
+						log.Log(PROC, "searchProcNet() THIS IS THE LINE:", fields)
+						return fields[9]
+					}
+				}
+			}
+		}
+
+		return ""
+	}
+
+	// Search TCP and then UDP
+	inode := searchProcNet("/proc/net/tcp")
+	if inode == "" {
+		inode = searchProcNet("/proc/net/udp")
+	}
+	log.Log(PROC, "searchProcNet() inode =", inode)
+
+	// Search for process with the inode
+	procs, _ := ioutil.ReadDir("/proc")
+	for _, proc := range procs {
+		if !proc.IsDir() {
+			continue
+		}
+
+		fdPath := filepath.Join("/proc", proc.Name(), "fd")
+		fds, err := ioutil.ReadDir(fdPath)
+		if err != nil {
+			continue // Process might have exited; skip it
+		}
+
+		for _, fd := range fds {
+			fdLink, _ := os.Readlink(filepath.Join(fdPath, fd.Name()))
+			var s string
+			s = "socket:[" + inode + "]"
+			if strings.Contains(fdLink, "socket:[") {
+				log.Log(PROC, "searchProcNet() fdLink has socket:", fdLink)
+				log.Log(PROC, "searchProcNet() proc.Name() =", proc.Name(), "s =", s)
+			}
+			if strings.Contains(fdLink, "socket:[35452]") {
+				log.Log(PROC, "searchProcNet() found proc.Name() =", proc.Name(), fdLink)
+				return proc.Name()
+			}
+			if strings.Contains(fdLink, "socket:[35450]") {
+				log.Log(PROC, "searchProcNet() found proc.Name() =", proc.Name(), fdLink)
+				return proc.Name()
+			}
+			if strings.Contains(fdLink, "socket:[35440]") {
+				log.Log(PROC, "searchProcNet() found proc.Name() =", proc.Name(), fdLink)
+				return proc.Name()
+			}
+			if strings.Contains(fdLink, "socket:[21303]") {
+				log.Log(PROC, "searchProcNet() found proc.Name() =", proc.Name(), fdLink)
+				// return proc.Name()
+			}
+			if strings.Contains(fdLink, "socket:["+inode+"]") {
+				return proc.Name()
+			}
+		}
+	}
+
+	return ""
+}

structs.go

@@ -0,0 +1,61 @@
+/*
+	figures out if your hostname is valid
+	then checks if your DNS is setup correctly
+*/
+
+package linuxstatus
+
+import (
+	"net"
+
+	"go.wit.com/gui"
+	"go.wit.com/lib/gadgets"
+)
+
+var me *LinuxStatus
+
+type LinuxStatus struct {
+	ready   bool
+	hidden  bool
+	changed bool
+
+	parent *gui.Node
+
+	ifmap map[int]*IFtype    // the current interfaces
+	ipmap map[string]*IPtype // the current ip addresses
+
+	window *gadgets.BasicWindow
+	group  *gui.Node
+	grid   *gui.Node
+
+	hostnameStatus *gadgets.OneLiner
+	hostname       *gadgets.OneLiner
+	hostshort      *gadgets.OneLiner
+	domainname     *gadgets.OneLiner
+	resolver       *gadgets.OneLiner
+	uid            *gadgets.OneLiner
+	IPv4           *gadgets.OneLiner
+	IPv6           *gadgets.OneLiner
+	workingIPv4    *gadgets.OneLiner
+	workingIPv6    *gadgets.OneLiner
+	Interfaces     *gui.Node
+	speed          *gadgets.OneLiner
+	speedActual    *gadgets.OneLiner
+}
+
+type IPtype struct {
+	gone      bool // used to track if the ip exists
+	ipv6      bool // the future
+	ipv4      bool // the past
+	LinkLocal bool
+	iface     *net.Interface
+	ip        net.IP
+	ipnet     *net.IPNet
+}
+
+type IFtype struct {
+	gone bool   // used to track if the interface exists
+	name string // just a shortcut to the name. maybe this is dumb
+	// up		bool		// could be used to track ifup/ifdown
+	iface *net.Interface
+}

timer.go

@@ -0,0 +1,38 @@
+package linuxstatus
+
+import (
+	"sort"
+	"strings"
+	"time"
+)
+
+// timeFunction takes a function as an argument and returns the execution time.
+func timeFunction(f func()) time.Duration {
+	startTime := time.Now()      // Record the start time
+	f()                          // Execute the function
+	return time.Since(startTime) // Calculate the elapsed time
+}
+
+// sortLines takes a string, splits it on newlines, sorts the lines,
+// and rejoins them with newlines.
+func sortLines(input string) string {
+	lines := strings.Split(input, "\n")
+
+	// Trim leading and trailing whitespace from each line
+	for i, line := range lines {
+		lines[i] = strings.TrimSpace(line)
+	}
+
+	sort.Strings(lines)
+	tmp := strings.Join(lines, "\n")
+	tmp = strings.TrimLeft(tmp, "\n")
+	tmp = strings.TrimRight(tmp, "\n")
+	return tmp
+}
+
+func (ls *LinuxStatus) SetSpeedActual(s string) {
+	if !ls.Ready() {
+		return
+	}
+	ls.speedActual.SetText(s)
+}

unix.go

@@ -2,15 +2,17 @@
 
 // https://wiki.archlinux.org/title/Dynamic_DNS
 
-package main
+package linuxstatus
 
-import 	(
+import (
+	"bytes"
+	"fmt"
+	"net"
 	"os"
 	"os/exec"
-	"log"
-	"net"
-//	"git.wit.org/wit/gui"
-//	"github.com/davecgh/go-spew/spew"
+	"strings"
+
+	"go.wit.com/log"
 )
 
 func CheckSuperuser() bool {
@@ -19,20 +21,21 @@ func CheckSuperuser() bool {
 
 func Escalate() {
 	if os.Getuid() != 0 {
-		cmd := exec.Command("sudo", "./control-panel-dns")
+		cmd := exec.Command("sudo", "./control-panel-dns") // TODO: get the actual path
 		cmd.Stdin = os.Stdin
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = os.Stderr
 		err := cmd.Run()
 		if err != nil {
-			log.Fatal(err)
+			log.Error(err, "exit in Escalate()")
+			log.Exit(err)
 		}
 	}
 }
 
 // You need permission to do a zone transfer. Otherwise:
-// dig +noall +answer +multiline lab.wit.org any 
-// dig +all +multiline fire.lab.wit.org # gives the zonefile header (ttl vals)
+// dig +noall +answer +multiline lab.wit.com any
+// dig +all +multiline fire.lab.wit.com # gives the zonefile header (ttl vals)
 func DumpPublicDNSZone(zone string) {
 	entries, err := net.LookupHost(zone)
 	if err != nil {
@@ -44,11 +47,51 @@ func DumpPublicDNSZone(zone string) {
 }
 
 func dumpIPs(host string) {
-    ips, err := net.LookupIP(host)
-        if err != nil {
-                log.Fatal(err)
-        }
-        for _, ip := range ips {
-                log.Println(host, ip)
-        }
+	ips, err := net.LookupIP(host)
+	if err != nil {
+		log.Error(err, "dumpIPs() failed")
+	}
+	for _, ip := range ips {
+		log.Println(host, ip)
+	}
+}
+
+/*
+check if ddclient is installed, working, and/or configured
+https://github.com/ddclient/ddclient
+*/
+func ddclient() {
+}
+
+/*
+check if ddupdate is installed, working, and/or configured
+*/
+func ddupdate() {
+}
+
+func run(s string) string {
+	cmdArgs := strings.Fields(s)
+	// Define the command you want to run
+	// cmd := exec.Command(cmdArgs)
+	cmd := exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...)
+
+	// Create a buffer to capture the output
+	var out bytes.Buffer
+
+	// Set the output of the command to the buffer
+	cmd.Stdout = &out
+
+	// Run the command
+	err := cmd.Run()
+	if err != nil {
+		fmt.Println("Error running command:", err)
+		return ""
+	}
+
+	// Trim leading and trailing whitespace from each line
+	tmp := strings.TrimSpace(out.String())
+	// Output the results
+	log.Verbose("Command Output:", tmp)
+
+	return tmp
 }

update.go

@@ -0,0 +1,43 @@
+package linuxstatus
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	"go.wit.com/log"
+)
+
+func (ls *LinuxStatus) Update() {
+	if ls == nil {
+		return
+	}
+	if !ls.Ready() {
+		log.Log(WARN, "can't update yet. ready is false")
+		log.Error(errors.New("Update() is not ready yet"))
+		return
+	}
+	log.Log(INFO, "Update() START")
+	duration := timeFunction(func() {
+		linuxLoop()
+	})
+	ls.setSpeed(duration)
+	log.Log(INFO, "Update() END")
+}
+
+func (ls *LinuxStatus) setSpeed(duration time.Duration) {
+	s := fmt.Sprint(duration)
+	if ls.speedActual == nil {
+		log.Log(WARN, "can't actually warn")
+		return
+	}
+	ls.speedActual.SetText(s)
+
+	if duration > 500*time.Millisecond {
+		ls.speed.SetText("SLOW")
+	} else if duration > 100*time.Millisecond {
+		ls.speed.SetText("OK")
+	} else {
+		ls.speed.SetText("FAST")
+	}
+}