The Great Renaming: hkexsh -> xs (Xperimental Shell)

Signed-off-by: Russ Magee <rmagee@gmail.com>

LICENSE.mit

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 - 2018 Russell Magee (hkexsh/hkexshd/hkexnet/hkexpasswd)
+Copyright (c) 2017 - 2019 Russell Magee (xs/xsd/xsnet/xspasswd)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -5,13 +5,13 @@
 #endif
 
 GIT_COMMIT := $(shell git rev-list -1 HEAD)
-VERSION := 0.8.7-kcp
+VERSION := 0.8.8
 #ifeq ($(BUILDOPTS),)
 BUILDOPTS :=$(BUILDOPTS)" -ldflags \"-X main.version=$(VERSION) -X main.gitCommit=$(GIT_COMMIT)\""
 #endif
 
-SUBPKGS = logger spinsult hkexnet
-TOOLS = hkexpasswd hkexsh hkexshd
+SUBPKGS = logger spinsult xsnet
+TOOLS = xspasswd xs xsd
 SUBDIRS = $(LIBS) $(TOOLS)
 
 INSTPREFIX = /usr/local
@@ -41,63 +41,63 @@ common:
 
 
 client: common
-	$(MAKE) BUILDOPTS=$(BUILDOPTS) -C hkexsh
+	$(MAKE) BUILDOPTS=$(BUILDOPTS) -C xs
 
 
 ifeq ($(MSYSTEM),)
 ifneq ($(GOOS),windows)
 server: common
-	$(MAKE) BUILDOPTS=$(BUILDOPTS) -C hkexshd
+	$(MAKE) BUILDOPTS=$(BUILDOPTS) -C xsd
 else
-	echo "Cross-build of hkexshd server for Windows not yet supported"
+	echo "Cross-build of xsd server for Windows not yet supported"
 endif
 else
 server: common
-	echo "hkexshd server not (yet) supported on Windows"
+	echo "xsd server not (yet) supported on Windows"
 endif
 
 
 passwd: common
-	$(MAKE) BUILDOPTS=$(BUILDOPTS) -C hkexpasswd
+	$(MAKE) BUILDOPTS=$(BUILDOPTS) -C xspasswd
 
 vis:
 	@which go-callvis >/dev/null 2>&1; \
 	stat=$$?; if [ $$stat -ne "0" ]; then \
 	  /bin/echo "go-callvis not found. Run go get github.com/Russtopia/go-callvis to install."; \
 	else \
-	  make -C hkexsh vis;\
-	  make -C hkexshd vis;\
-	  make -C hkexpasswd vis; \
+	  make -C xs vis;\
+	  make -C xsd vis;\
+	  make -C xspasswd vis; \
 	fi
 
 lint:
-	make -C hkexpasswd lint
-	make -C hkexshd lint
-	make -C hkexsh lint
+	make -C xspasswd lint
+	make -C xsd lint
+	make -C xs lint
 
 reinstall: uninstall install
 
 install:
-	cp hkexsh/hkexsh $(INSTPREFIX)/bin
+	cp xs/xs $(INSTPREFIX)/bin
 ifeq ($(MSYSTEM),)
 ifneq ($(GOOS),windows)
-	cp hkexshd/hkexshd hkexpasswd/hkexpasswd $(INSTPREFIX)/sbin
+	cp xsd/xsd xspasswd/xspasswd $(INSTPREFIX)/sbin
 else
-	mv $(INSTPREFIX)/bin/hkexsh $(INSTPREFIX)/bin/_hkexsh
-	cp hkexsh/mintty_wrapper.sh $(INSTPREFIX)/bin/hkexsh
-	echo "Cross-build of hkexshd server for Windows not yet supported"
+	mv $(INSTPREFIX)/bin/xs $(INSTPREFIX)/bin/_xs
+	cp xs/mintty_wrapper.sh $(INSTPREFIX)/bin/xs
+	echo "Cross-build of xsd server for Windows not yet supported"
 endif
 else
-	echo "Cross-build of hkexshd server for Windows not yet supported"
+	echo "Cross-build of xsd server for Windows not yet supported"
 endif
-	cd $(INSTPREFIX)/bin && ln -s hkexsh hkexcp && cd -
+	cd $(INSTPREFIX)/bin && ln -s xs xc && cd -
 
 
 uninstall:
-	rm -f $(INSTPREFIX)/bin/hkexsh $(INSTPREFIX)/bin/hkexcp $(INSTPREFIX)/bin/_hkexsh
+	rm -f $(INSTPREFIX)/bin/xs $(INSTPREFIX)/bin/xc $(INSTPREFIX)/bin/_xs
 ifeq ($(MSYSTEM),)
 ifneq ($(GOOS),windows)
-	rm -f $(INSTPREFIX)/sbin/hkexshd $(INSTPREFIX)/sbin/hkexpasswd
+	rm -f $(INSTPREFIX)/sbin/xsd $(INSTPREFIX)/sbin/xspasswd
 else
 endif
 else

hkexauth.go

@@ -1,8 +1,8 @@
-package hkexsh
+package xs
 
-// Package hkexsh - a secure terminal client/server written from scratch in Go
+// Package xs - a secure terminal client/server written from scratch in Go
 //
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
@@ -30,7 +30,7 @@ func userExistsOnSystem(who string) bool {
 }
 
 // AuthUserByPasswd checks user login information using a password.
-// This checks /etc/hkexsh.passwd for auth info, and system /etc/passwd
+// This checks /etc/xs.passwd for auth info, and system /etc/passwd
 // to cross-check the user actually exists.
 // nolint: gocyclo
 func AuthUserByPasswd(username string, auth string, fname string) (valid bool, allowedCmds string) {
@@ -85,7 +85,7 @@ func AuthUserByPasswd(username string, auth string, fname string) (valid bool, a
 }
 
 // AuthUserByToken checks user login information against an auth token.
-// Auth tokens are stored in each user's $HOME/.hkexsh_id and are requested
+// Auth tokens are stored in each user's $HOME/.xs_id and are requested
 // via the -g option.
 // The function also check system /etc/passwd to cross-check the user
 // actually exists.
@@ -96,9 +96,9 @@ func AuthUserByToken(username string, connhostname string, auth string) (valid b
 		return false
 	}
 
-	b, e := ioutil.ReadFile(fmt.Sprintf("%s/.hkexsh_id", u.HomeDir))
+	b, e := ioutil.ReadFile(fmt.Sprintf("%s/.xs_id", u.HomeDir))
 	if e != nil {
-		log.Printf("INFO: Cannot read %s/.hkexsh_id\n", u.HomeDir)
+		log.Printf("INFO: Cannot read %s/.xs_id\n", u.HomeDir)
 		return false
 	}
 

consts.go

@@ -1,10 +1,10 @@
-// Package hkexsh - a secure terminal client/server written from scratch in Go
+// Package xs - a secure terminal client/server written from scratch in Go
 //
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
 // golang implementation by Russ Magee (rmagee_at_gmail.com)
-package hkexsh
+package xs
 
-// common constants for the HKExSh
+// common constants for the XS (Xperimental Shell)

go.mod

@@ -1,4 +1,4 @@
-module blitter.com/go/hkexsh
+module blitter.com/go/xs
 
 go 1.12
 

grml.yaml

@@ -1,5 +1,5 @@
 env:
-  project: hkexsh
+  project: xs
   version: 0.8.0
   buildDir: build/
   docDir: doc/
@@ -38,7 +38,7 @@ commands:
 
   app:
     aliases: [ build ]
-    help: build the hkexsh tools
+    help: build the xs tools
     exec: |
       make clean
       make all

hkexpasswd/hkexpasswd-vis.gv

@@ -1,63 +0,0 @@
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hkexsh/hkexcp

@@ -1 +0,0 @@
-hkexsh

hkexsh/hkexsh-vis.gv

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-    "blitter.com/go/hkexsh/hkexsh.copyBuffer" -> "blitter.com/go/hkexsh/hkexsh.copyBuffer$3" [ style="dashed" ]
-    "blitter.com/go/hkexsh/hkexsh.Copy" -> "blitter.com/go/hkexsh/hkexsh.copyBuffer" [  ]
-    "blitter.com/go/hkexsh/hkexsh.doShellMode$2$1" -> "blitter.com/go/hkexsh/hkexsh.Copy" [  ]
-    "blitter.com/go/hkexsh/hkexsh.doShellMode$2" -> "blitter.com/go/hkexsh/hkexsh.doShellMode$2$1" [  ]
-    "blitter.com/go/hkexsh/hkexsh.doShellMode$2" -> "blitter.com/go/hkexsh.Restore" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.doShellMode" -> "blitter.com/go/hkexsh/hkexsh.doShellMode$2" [ arrowhead="normalnoneodot" ]
-    "blitter.com/go/hkexsh/hkexsh.main$2" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).WritePacket" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh.Session).Op" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh.Session).Who" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh.Session).ConnHost" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh.Session).TermType" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh.Session).Cmd" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh.Session).AuthCookie" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.sendSessionParams" -> "(blitter.com/go/hkexsh/hkexnet.Conn).Write" [ style="dashed" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main$1" -> "blitter.com/go/hkexsh.Restore" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.launchTuns" -> "blitter.com/go/hkexsh/hkexsh.reqTunnel" [  ]
-    "blitter.com/go/hkexsh/hkexsh.rejectUserMsg" -> "blitter.com/go/hkexsh/spinsult.GetSentence" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.parseNonSwitchArgs" [  ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/logger.New" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexnet.Init" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexnet.Dial" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).Close" [ color="saddlebrown" arrowhead="normalnoneodiamond" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "github.com/mattn/go-isatty.IsTerminal" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh.MakeRaw" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.main$1" [ arrowhead="normalnoneodiamond" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh.ReadPassword" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh.NewSession" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.sendSessionParams" [  ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(blitter.com/go/hkexsh/hkexnet.Conn).Read" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(*blitter.com/go/hkexsh.Session).SetStatus" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.rejectUserMsg" [  ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).SetupChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).EnableChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).DisableChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).ShutdownChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.main$2" [ arrowhead="normalnoneodot" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.launchTuns" [  ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.doShellMode" [  ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "(blitter.com/go/hkexsh.Session).Status" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.doCopyMode" -> "(blitter.com/go/hkexsh.Session).Cmd" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.doCopyMode" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).WritePacket" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.doCopyMode" -> "(blitter.com/go/hkexsh/hkexnet.Conn).Read" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.doCopyMode" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).SetStatus" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.doCopyMode" -> "(blitter.com/go/hkexsh/hkexnet.Conn).GetStatus" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.doCopyMode" [  ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh.Restore" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.usageShell" [ style="dashed" ]
-    "blitter.com/go/hkexsh/hkexsh.main" -> "blitter.com/go/hkexsh/hkexsh.usageCp" [ style="dashed" ]
-}

hkexshd/hkexshd-vis.gv

@@ -1,281 +0,0 @@
-digraph gocallvis {
-    label="blitter.com/go/hkexsh/hkexshd";
-    labeljust="l";
-    fontname="Arial";
-    fontsize="14";
-    rankdir="LR";
-    bgcolor="lightgray";
-    style="solid";
-    penwidth="0.5";
-    pad="0.0";
-    nodesep="0.35";
-
-    node [shape="ellipse" style="filled" fillcolor="honeydew" fontname="Verdana" penwidth="1.0" margin="0.05,0.0"];
-    edge [minlen="2"]
-
-    subgraph "cluster_focus" {
-        bgcolor="#e6ecfa";
-label="main";
-labelloc="t";
-labeljust="c";
-fontsize="18";
-        
-        "blitter.com/go/hkexsh/hkexshd.main$1" [ fillcolor="lightblue" label="main$1" style="dotted,filled" ]
-        "blitter.com/go/hkexsh/hkexshd.main$2$1" [ fillcolor="lightblue" label="main$2$1" style="dotted,filled" ]
-        "blitter.com/go/hkexsh/hkexshd.runShellAs$4" [ fillcolor="lightblue" label="deferChaffShutdown" style="dotted,filled" ]
-        "blitter.com/go/hkexsh/hkexshd.main" [ fillcolor="lightblue" label="main" penwidth="0.5" ]
-        "blitter.com/go/hkexsh/hkexshd.main$2" [ fillcolor="lightblue" label="main$2" style="dotted,filled" ]
-        "blitter.com/go/hkexsh/hkexshd.GenAuthToken" [ fillcolor="lightblue" label="GenAuthToken" penwidth="1.5" ]
-        "blitter.com/go/hkexsh/hkexshd.runShellAs" [ fillcolor="lightblue" label="runShellAs" penwidth="0.5" ]
-        "blitter.com/go/hkexsh/hkexshd.runShellAs$1" [ label="deferPtmxClose" style="dotted,filled" fillcolor="lightblue" ]
-        "blitter.com/go/hkexsh/hkexshd.runShellAs$2" [ style="dotted,filled" fillcolor="lightblue" label="termResizeWatcher" ]
-        "blitter.com/go/hkexsh/hkexshd.runShellAs$3" [ fillcolor="lightblue" label="stdinToPtyWorker" style="dotted,filled" ]
-        "blitter.com/go/hkexsh/hkexshd.runShellAs$5" [ fillcolor="lightblue" label="ptyToStdoutWorker" style="dotted,filled" ]
-        "blitter.com/go/hkexsh/hkexshd.runClientToServerCopyAs" [ fillcolor="lightblue" label="runClientToServerCopyAs" penwidth="0.5" ]
-        "blitter.com/go/hkexsh/hkexshd.runServerToClientCopyAs" [ fillcolor="lightblue" label="runServerToClientCopyAs" penwidth="0.5" ]
-        
-        subgraph "cluster_blitter.com/go/goutmp" {
-        fontname="bold";
-rank="sink";
-tooltip="package: blitter.com/go/goutmp";
-penwidth="0.8";
-fillcolor="lightyellow";
-label="[goutmp]";
-URL="/?f=blitter.com/go/goutmp";
-fontsize="16";
-style="filled";
-        
-        "blitter.com/go/goutmp.Unput_utmp" [ label="Unput_utmp" penwidth="1.5" fillcolor="moccasin" ]
-        "blitter.com/go/goutmp.GetHost" [ fillcolor="moccasin" label="GetHost" penwidth="1.5" ]
-        "blitter.com/go/goutmp.Put_utmp" [ label="Put_utmp" penwidth="1.5" fillcolor="moccasin" ]
-        "blitter.com/go/goutmp.Put_lastlog_entry" [ fillcolor="moccasin" label="Put_lastlog_entry" penwidth="1.5" ]
-        
-    }
-
-        subgraph "cluster_blitter.com/go/hkexsh" {
-        fillcolor="lightyellow";
-label="[hkexsh]";
-tooltip="package: blitter.com/go/hkexsh";
-penwidth="0.8";
-style="filled";
-fontname="bold";
-rank="sink";
-URL="/?f=blitter.com/go/hkexsh";
-fontsize="16";
-        
-        "blitter.com/go/hkexsh.AuthUserByToken" [ label="AuthUserByToken" penwidth="1.5" fillcolor="moccasin" ]
-        "blitter.com/go/hkexsh.AuthUserByPasswd" [ fillcolor="moccasin" label="AuthUserByPasswd" penwidth="1.5" ]
-        
-        subgraph "cluster_*blitter.com/go/hkexsh.Session" {
-        fontsize="15";
-fontcolor="#222222";
-labelloc="b";
-style="rounded,filled";
-fillcolor="wheat2";
-label="(*Session)";
-tooltip="type: *blitter.com/go/hkexsh.Session";
-penwidth="0.5";
-        
-        "(*blitter.com/go/hkexsh.Session).SetOp" [ fillcolor="moccasin" label="SetOp" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh.Session).SetWho" [ fillcolor="moccasin" label="SetWho" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh.Session).SetConnHost" [ penwidth="1.5" fillcolor="moccasin" label="SetConnHost" ]
-        "(*blitter.com/go/hkexsh.Session).SetTermType" [ label="SetTermType" penwidth="1.5" fillcolor="moccasin" ]
-        "(*blitter.com/go/hkexsh.Session).SetCmd" [ fillcolor="moccasin" label="SetCmd" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh.Session).SetAuthCookie" [ fillcolor="moccasin" label="SetAuthCookie" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh.Session).ClearAuthCookie" [ label="ClearAuthCookie" penwidth="1.5" fillcolor="moccasin" ]
-        
-    }
-
-        subgraph "cluster_blitter.com/go/hkexsh.Session" {
-        fillcolor="wheat2";
-label="(Session)";
-tooltip="type: blitter.com/go/hkexsh.Session";
-penwidth="0.5";
-fontsize="15";
-fontcolor="#222222";
-labelloc="b";
-style="rounded,filled";
-        
-        "(blitter.com/go/hkexsh.Session).Op" [ fillcolor="moccasin" label="Op" penwidth="1.5" ]
-        "(blitter.com/go/hkexsh.Session).Who" [ fillcolor="moccasin" label="Who" penwidth="1.5" ]
-        "(blitter.com/go/hkexsh.Session).ConnHost" [ fillcolor="moccasin" label="ConnHost" penwidth="1.5" ]
-        "(blitter.com/go/hkexsh.Session).Cmd" [ penwidth="1.5" fillcolor="moccasin" label="Cmd" ]
-        "(blitter.com/go/hkexsh.Session).AuthCookie" [ fillcolor="moccasin" label="AuthCookie" penwidth="1.5" ]
-        "(blitter.com/go/hkexsh.Session).TermType" [ fillcolor="moccasin" label="TermType" penwidth="1.5" ]
-        
-    }
-
-    }
-
-        subgraph "cluster_blitter.com/go/hkexsh/hkexnet" {
-        fontsize="16";
-URL="/?f=blitter.com/go/hkexsh/hkexnet";
-rank="sink";
-label="[hkexnet]";
-tooltip="package: blitter.com/go/hkexsh/hkexnet";
-penwidth="0.8";
-style="filled";
-fillcolor="lightyellow";
-fontname="bold";
-        
-        "blitter.com/go/hkexsh/hkexnet.Init" [ fillcolor="moccasin" label="Init" penwidth="1.5" ]
-        "blitter.com/go/hkexsh/hkexnet.Listen" [ fillcolor="moccasin" label="Listen" penwidth="1.5" ]
-        
-        subgraph "cluster_*blitter.com/go/hkexsh/hkexnet.Conn" {
-        tooltip="type: *blitter.com/go/hkexsh/hkexnet.Conn";
-penwidth="0.5";
-fontsize="15";
-fontcolor="#222222";
-labelloc="b";
-style="rounded,filled";
-fillcolor="wheat2";
-label="(*Conn)";
-        
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).DisableChaff" [ fillcolor="moccasin" label="DisableChaff" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).ShutdownChaff" [ fillcolor="moccasin" label="ShutdownChaff" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).SetupChaff" [ fillcolor="moccasin" label="SetupChaff" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).Close" [ fillcolor="moccasin" label="Close" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).RemoteAddr" [ label="RemoteAddr" penwidth="1.5" fillcolor="moccasin" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).EnableChaff" [ fillcolor="moccasin" label="EnableChaff" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).SetStatus" [ fillcolor="moccasin" label="SetStatus" penwidth="1.5" ]
-        "(*blitter.com/go/hkexsh/hkexnet.Conn).WritePacket" [ label="WritePacket" penwidth="1.5" fillcolor="moccasin" ]
-        
-    }
-
-        subgraph "cluster_*blitter.com/go/hkexsh/hkexnet.HKExListener" {
-        tooltip="type: *blitter.com/go/hkexsh/hkexnet.HKExListener";
-penwidth="0.5";
-fontsize="15";
-fontcolor="#222222";
-labelloc="b";
-style="rounded,filled";
-fillcolor="wheat2";
-label="(*HKExListener)";
-        
-        "(*blitter.com/go/hkexsh/hkexnet.HKExListener).Accept" [ fillcolor="moccasin" label="Accept" penwidth="1.5" ]
-        
-    }
-
-        subgraph "cluster_blitter.com/go/hkexsh/hkexnet.Conn" {
-        fontcolor="#222222";
-labelloc="b";
-style="rounded,filled";
-fillcolor="wheat2";
-label="(Conn)";
-tooltip="type: blitter.com/go/hkexsh/hkexnet.Conn";
-penwidth="0.5";
-fontsize="15";
-        
-        "(blitter.com/go/hkexsh/hkexnet.Conn).Write" [ label="Write" penwidth="1.5" fillcolor="moccasin" ]
-        
-    }
-
-        subgraph "cluster_blitter.com/go/hkexsh/hkexnet.HKExListener" {
-        fillcolor="wheat2";
-label="(HKExListener)";
-tooltip="type: blitter.com/go/hkexsh/hkexnet.HKExListener";
-penwidth="0.5";
-fontsize="15";
-fontcolor="#222222";
-labelloc="b";
-style="rounded,filled";
-        
-        "(blitter.com/go/hkexsh/hkexnet.HKExListener).Close" [ fillcolor="moccasin" label="Close" penwidth="1.5" ]
-        
-    }
-
-    }
-
-        subgraph "cluster_blitter.com/go/hkexsh/logger" {
-        penwidth="0.8";
-fontsize="16";
-style="filled";
-rank="sink";
-fillcolor="lightyellow";
-fontname="bold";
-label="[logger]";
-URL="/?f=blitter.com/go/hkexsh/logger";
-tooltip="package: blitter.com/go/hkexsh/logger";
-        
-        "blitter.com/go/hkexsh/logger.LogNotice" [ fillcolor="moccasin" label="LogNotice" penwidth="1.5" ]
-        "blitter.com/go/hkexsh/logger.New" [ fillcolor="moccasin" label="New" penwidth="1.5" ]
-        "blitter.com/go/hkexsh/logger.LogErr" [ fillcolor="moccasin" label="LogErr" penwidth="1.5" ]
-        
-    }
-
-        subgraph "cluster_github.com/kr/pty" {
-        penwidth="0.8";
-fillcolor="lightyellow";
-tooltip="package: github.com/kr/pty";
-label="[pty]";
-URL="/?f=github.com/kr/pty";
-fontsize="16";
-style="filled";
-fontname="bold";
-rank="sink";
-        
-        "github.com/kr/pty.Start" [ label="Start" penwidth="1.5" fillcolor="moccasin" ]
-        "github.com/kr/pty.Setsize" [ fillcolor="moccasin" label="Setsize" penwidth="1.5" ]
-        
-    }
-
-    }
-
-    "blitter.com/go/hkexsh/hkexshd.main$1" -> "blitter.com/go/hkexsh/logger.LogNotice" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2$1" -> "blitter.com/go/goutmp.Unput_utmp" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs$4" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).DisableChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs$4" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).ShutdownChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "blitter.com/go/hkexsh/logger.New" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "blitter.com/go/hkexsh/hkexnet.Init" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "blitter.com/go/hkexsh/hkexshd.main$1" [ arrowhead="normalnoneodot" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "blitter.com/go/hkexsh/hkexnet.Listen" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "(blitter.com/go/hkexsh/hkexnet.HKExListener).Close" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "(*blitter.com/go/hkexsh/hkexnet.HKExListener).Accept" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).SetupChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).Close" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).SetOp" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).SetWho" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).SetConnHost" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).SetTermType" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).SetCmd" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).SetAuthCookie" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh.Session).Op" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh.Session).Who" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh.Session).ConnHost" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh.Session).Cmd" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh.Session).AuthCookie" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh.AuthUserByToken" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh.Session).ClearAuthCookie" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh.AuthUserByPasswd" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh/hkexnet.Conn).Write" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/logger.LogNotice" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).RemoteAddr" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/goutmp.GetHost" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/hkexshd.GenAuthToken" [  ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(blitter.com/go/hkexsh.Session).TermType" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "github.com/kr/pty.Start" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "blitter.com/go/hkexsh/hkexshd.runShellAs$1" [ arrowhead="normalnoneodiamond" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs$2" -> "github.com/kr/pty.Setsize" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "blitter.com/go/hkexsh/hkexshd.runShellAs$2" [ arrowhead="normalnoneodot" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "blitter.com/go/hkexsh/hkexshd.runShellAs$3" [ arrowhead="normalnoneodot" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).EnableChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "blitter.com/go/hkexsh/hkexshd.runShellAs$4" [ arrowhead="normalnoneodiamond" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "blitter.com/go/hkexsh/hkexshd.runShellAs$5" [ arrowhead="normalnoneodot" ]
-    "blitter.com/go/hkexsh/hkexshd.runShellAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).SetStatus" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/hkexshd.runShellAs" [  ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/logger.LogErr" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).SetStatus" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/goutmp.Put_utmp" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/hkexshd.main$2$1" [ arrowhead="normalnoneodiamond" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/goutmp.Put_lastlog_entry" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runClientToServerCopyAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).EnableChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runClientToServerCopyAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).DisableChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runClientToServerCopyAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).ShutdownChaff" [ color="saddlebrown" arrowhead="normalnoneodiamond" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/hkexshd.runClientToServerCopyAs" [  ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).WritePacket" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runServerToClientCopyAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).EnableChaff" [ color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runServerToClientCopyAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).DisableChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.runServerToClientCopyAs" -> "(*blitter.com/go/hkexsh/hkexnet.Conn).ShutdownChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
-    "blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/hkexshd.runServerToClientCopyAs" [  ]
-    "blitter.com/go/hkexsh/hkexshd.main" -> "blitter.com/go/hkexsh/hkexshd.main$2" [ arrowhead="normalnoneodot" ]
-}

hkexsession.go

@@ -1,8 +1,8 @@
-package hkexsh
+package xs
 
-// Package hkexsh - a secure terminal client/server written from scratch in Go
+// Package xs - a secure terminal client/server written from scratch in Go
 //
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
@@ -28,7 +28,7 @@ type Session struct {
 
 // Output Session record as a string. Implements Stringer interface.
 func (h *Session) String() string {
-	return fmt.Sprintf("hkexsh.Session:\nOp:%v\nWho:%v\nCmd:%v\nAuthCookie:%v\nStatus:%v",
+	return fmt.Sprintf("xs.Session:\nOp:%v\nWho:%v\nCmd:%v\nAuthCookie:%v\nStatus:%v",
 		h.op, h.who, h.cmd, h.AuthCookie(false), h.status)
 }
 

termmode_unix.go

@@ -1,6 +1,6 @@
 // +build linux
 
-package hkexsh
+package xs
 
 import (
 	"errors"
@@ -12,7 +12,7 @@ import (
 /* -------------
  * minimal terminal APIs brought in from ssh/terminal
  * (they have no real business being there as they aren't specific to
- * ssh, but as of Go v1.10, early 2018, core go stdlib hasn't yet done
+ * ssh, but as of Go v1.10, late 2019, core go stdlib hasn't yet done
  * the planned terminal lib reorgs.)
  * ------------- */
 

termmode_windows.go

@@ -1,7 +1,7 @@
 // +build windows
 //
 // Note the terminal manipulation functions herein are mostly stubs. They
-// don't really do anything and the hkexsh demo client depends on a wrapper
+// don't really do anything and the xs demo client depends on a wrapper
 // script using the 'stty' tool to actually set the proper mode for
 // password login and raw mode required, then restoring it upon logout/exit.
 //
@@ -12,7 +12,7 @@
 // here; the wrapper does the bare minimum to make the client workable
 // under MSYS+mintty which is what I use.
 
-package hkexsh
+package xs
 
 import (
 	"io"

hkexsh/Makefile

@@ -11,8 +11,8 @@ clean:
 	$(RM) $(EXE) $(EXE).exe
 
 vis:
-	go-callvis -file hkexsh-vis -format png -ignore $(EXTPKGS) -group pkg,type .
-	../fixup-gv.sh hkexsh.go && cat hkexsh-vis.gv | dot -Tpng -ohkexsh-vis-fixedup.png
+	go-callvis -file xs-vis -format png -ignore $(EXTPKGS) -group pkg,type .
+	../fixup-gv.sh xs.go && cat xs-vis.gv | dot -Tpng -oxs-vis-fixedup.png
 
 lint:
 	-gometalinter --deadline=60s | sort

hkexsh/termsize_linux.go

@@ -9,11 +9,11 @@ import (
 	"os/signal"
 	"syscall"
 
-	"blitter.com/go/hkexsh/hkexnet"
+	"blitter.com/go/xs/xsnet"
 )
 
 // Handle pty resizes (notify server side)
-func handleTermResizes(conn *hkexnet.Conn) {
+func handleTermResizes(conn *xsnet.Conn) {
 	ch := make(chan os.Signal, 1)
 	signal.Notify(ch, syscall.SIGWINCH)
 	wg.Add(1)
@@ -30,7 +30,7 @@ func handleTermResizes(conn *hkexnet.Conn) {
 				log.Println(err)
 			}
 			termSzPacket := fmt.Sprintf("%d %d", rows, cols)
-			conn.WritePacket([]byte(termSzPacket), hkexnet.CSOTermSize) // nolint: errcheck,gosec
+			conn.WritePacket([]byte(termSzPacket), xsnet.CSOTermSize) // nolint: errcheck,gosec
 		}
 	}()
 	ch <- syscall.SIGWINCH // Initial resize.

hkexsh/termsize_windows.go

@@ -6,11 +6,11 @@ import (
 	"log"
 	"time"
 
-	"blitter.com/go/hkexsh/hkexnet"
+	"blitter.com/go/xs/xsnet"
 )
 
 // Handle pty resizes (notify server side)
-func handleTermResizes(conn *hkexnet.Conn) {
+func handleTermResizes(conn *xsnet.Conn) {
 	var hasStty bool
 	curCols, curRows := 0, 0
 	_, _, err := GetSize()
@@ -57,7 +57,7 @@ func handleTermResizes(conn *hkexnet.Conn) {
 					log.Println(err)
 				}
 				termSzPacket := fmt.Sprintf("%d %d", curRows, curCols)
-				conn.WritePacket([]byte(termSzPacket), hkexnet.CSOTermSize)
+				conn.WritePacket([]byte(termSzPacket), xsnet.CSOTermSize)
 			}
 		}
 	}()

xs/xs-vis.gv

@@ -0,0 +1,549 @@
+digraph gocallvis {
+    label="blitter.com/go/xs/xs";
+    labeljust="l";
+    fontname="Arial";
+    fontsize="14";
+    rankdir="LR";
+    bgcolor="lightgray";
+    style="solid";
+    penwidth="0.5";
+    pad="0.0";
+    nodesep="0.35";
+
+    node [shape="ellipse" style="filled" fillcolor="honeydew" fontname="Verdana" penwidth="1.0" margin="0.05,0.0"];
+    edge [minlen="2"]
+
+    subgraph "cluster_focus" {
+        bgcolor="#e6ecfa";
+label="main";
+labelloc="t";
+labeljust="c";
+fontsize="18";
+        
+        "blitter.com/go/xs/xs.reqTunnel" [ fillcolor="lightblue" label="reqTunnel" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.launchTuns" [ label="launchTuns" penwidth="0.5" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.main$3" [ fillcolor="lightblue" label="main$3" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.doCopyMode" [ fillcolor="lightblue" label="doCopyMode" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.copyBuffer" [ fillcolor="lightblue" label="copyBuffer" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.copyBuffer$1" [ label="copyBuffer$1" style="dotted,filled" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.copyBuffer$2" [ label="copyBuffer$2" style="dotted,filled" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.copyBuffer$3" [ fillcolor="lightblue" label="copyBuffer$3" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.Copy" [ label="Copy" penwidth="1.5" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.doShellMode$1" [ fillcolor="lightblue" label="shellRemoteToStdin" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.doShellMode$1$1" [ fillcolor="lightblue" label="doShellMode$1$1" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.exitWithStatus" [ fillcolor="lightblue" label="exitWithStatus" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.doShellMode" [ label="doShellMode" penwidth="0.5" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.handleTermResizes$1" [ fillcolor="lightblue" label="handleTermResizes$1" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.GetSize" [ fillcolor="lightblue" label="GetSize" penwidth="1.5" ]
+        "blitter.com/go/xs/xs.handleTermResizes" [ label="handleTermResizes" penwidth="0.5" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.doShellMode$2$1" [ fillcolor="lightblue" label="doShellMode$2$1" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.doShellMode$2" [ fillcolor="lightblue" label="shellStdinToRemote" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.sendSessionParams" [ fillcolor="lightblue" label="sendSessionParams" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.main" [ label="main" penwidth="0.5" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xs.parseNonSwitchArgs" [ fillcolor="lightblue" label="parseNonSwitchArgs" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.main$1" [ fillcolor="lightblue" label="deferRestore" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.main$2" [ fillcolor="lightblue" label="deferCloseChaff" style="dotted,filled" ]
+        "blitter.com/go/xs/xs.rejectUserMsg" [ fillcolor="lightblue" label="rejectUserMsg" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.usageShell" [ fillcolor="lightblue" label="usageShell" penwidth="0.5" ]
+        "blitter.com/go/xs/xs.usageCp" [ label="usageCp" penwidth="0.5" fillcolor="lightblue" ]
+        
+        subgraph "cluster_blitter.com/go/xs" {
+        penwidth="0.8";
+style="filled";
+rank="sink";
+tooltip="package: blitter.com/go/xs";
+fontsize="16";
+fillcolor="lightyellow";
+fontname="bold";
+label="[xs]";
+URL="/?f=blitter.com/go/xs";
+        
+        "blitter.com/go/xs.Restore" [ fillcolor="moccasin" label="Restore" penwidth="1.5" ]
+        "blitter.com/go/xs.MakeRaw" [ penwidth="1.5" fillcolor="moccasin" label="MakeRaw" ]
+        "blitter.com/go/xs.ReadPassword" [ fillcolor="moccasin" label="ReadPassword" penwidth="1.5" ]
+        "blitter.com/go/xs.NewSession" [ fillcolor="moccasin" label="NewSession" penwidth="1.5" ]
+        
+        subgraph "cluster_*blitter.com/go/xs.Session" {
+        fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(*Session)";
+tooltip="type: *blitter.com/go/xs.Session";
+penwidth="0.5";
+        
+        "(*blitter.com/go/xs.Session).SetStatus" [ fillcolor="moccasin" label="SetStatus" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs.Session" {
+        style="rounded,filled";
+fillcolor="wheat2";
+label="(Session)";
+tooltip="type: blitter.com/go/xs.Session";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+        
+        "(blitter.com/go/xs.Session).Cmd" [ fillcolor="moccasin" label="Cmd" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).Status" [ penwidth="1.5" fillcolor="moccasin" label="Status" ]
+        "(blitter.com/go/xs.Session).Op" [ fillcolor="moccasin" label="Op" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).Who" [ fillcolor="moccasin" label="Who" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).ConnHost" [ fillcolor="moccasin" label="ConnHost" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).TermType" [ fillcolor="moccasin" label="TermType" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).AuthCookie" [ label="AuthCookie" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_blitter.com/go/xs/logger" {
+        fontsize="16";
+URL="/?f=blitter.com/go/xs/logger";
+penwidth="0.8";
+style="filled";
+fillcolor="lightyellow";
+fontname="bold";
+rank="sink";
+label="[logger]";
+tooltip="package: blitter.com/go/xs/logger";
+        
+        "blitter.com/go/xs/logger.LogDebug" [ fillcolor="moccasin" label="LogDebug" penwidth="1.5" ]
+        "blitter.com/go/xs/logger.New" [ fillcolor="moccasin" label="New" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs/spinsult" {
+        fillcolor="lightyellow";
+fontname="bold";
+label="[spinsult]";
+URL="/?f=blitter.com/go/xs/spinsult";
+tooltip="package: blitter.com/go/xs/spinsult";
+penwidth="0.8";
+fontsize="16";
+style="filled";
+rank="sink";
+        
+        "blitter.com/go/xs/spinsult.GetSentence" [ fillcolor="moccasin" label="GetSentence" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs/xsnet" {
+        penwidth="0.8";
+fillcolor="lightyellow";
+fontname="bold";
+rank="sink";
+URL="/?f=blitter.com/go/xs/xsnet";
+fontsize="16";
+style="filled";
+label="[xsnet]";
+tooltip="package: blitter.com/go/xs/xsnet";
+        
+        "blitter.com/go/xs/xsnet.Init" [ fillcolor="moccasin" label="Init" penwidth="1.5" ]
+        "blitter.com/go/xs/xsnet.Dial" [ label="Dial" penwidth="1.5" fillcolor="moccasin" ]
+        
+        subgraph "cluster_*blitter.com/go/xs/xsnet.Conn" {
+        fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(*Conn)";
+tooltip="type: *blitter.com/go/xs/xsnet.Conn";
+penwidth="0.5";
+fontsize="15";
+        
+        "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ penwidth="1.5" fillcolor="moccasin" label="WritePacket" ]
+        "(*blitter.com/go/xs/xsnet.Conn).SetStatus" [ fillcolor="moccasin" label="SetStatus" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).Close" [ penwidth="1.5" fillcolor="moccasin" label="Close" ]
+        "(*blitter.com/go/xs/xsnet.Conn).SetupChaff" [ penwidth="1.5" fillcolor="moccasin" label="SetupChaff" ]
+        "(*blitter.com/go/xs/xsnet.Conn).EnableChaff" [ fillcolor="moccasin" label="EnableChaff" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).DisableChaff" [ fillcolor="moccasin" label="DisableChaff" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).ShutdownChaff" [ fillcolor="moccasin" label="ShutdownChaff" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs/xsnet.Conn" {
+        labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(Conn)";
+tooltip="type: blitter.com/go/xs/xsnet.Conn";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+        
+        "(blitter.com/go/xs/xsnet.Conn).Read" [ label="Read" penwidth="1.5" fillcolor="moccasin" ]
+        "(blitter.com/go/xs/xsnet.Conn).GetStatus" [ fillcolor="moccasin" label="GetStatus" penwidth="1.5" ]
+        "(blitter.com/go/xs/xsnet.Conn).Write" [ label="Write" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_compress/flate" {
+        fontsize="16";
+fillcolor="#E0FFE1";
+label="[compress/flate]";
+URL="/?f=compress/flate";
+penwidth="0.8";
+style="filled";
+fontname="bold";
+rank="sink";
+tooltip="package: compress/flate";
+        
+        
+        subgraph "cluster_compress/flate.CorruptInputError" {
+        tooltip="type: compress/flate.CorruptInputError";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(CorruptInputError)";
+        
+        "(compress/flate.CorruptInputError).Error" [ penwidth="1.5" fillcolor="#adedad" label="Error" ]
+        
+    }
+
+        subgraph "cluster_compress/flate.InternalError" {
+        fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(InternalError)";
+tooltip="type: compress/flate.InternalError";
+penwidth="0.5";
+        
+        "(compress/flate.InternalError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_context" {
+        fontsize="16";
+style="filled";
+penwidth="0.8";
+fontname="bold";
+rank="sink";
+label="[context]";
+URL="/?f=context";
+tooltip="package: context";
+fillcolor="#E0FFE1";
+        
+        
+        subgraph "cluster_context.deadlineExceededError" {
+        fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(deadlineExceededError)";
+tooltip="type: context.deadlineExceededError";
+penwidth="0.5";
+        
+        "(context.deadlineExceededError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_crypto/aes" {
+        style="filled";
+fillcolor="#E0FFE1";
+rank="sink";
+label="[crypto/aes]";
+penwidth="0.8";
+fontsize="16";
+fontname="bold";
+URL="/?f=crypto/aes";
+tooltip="package: crypto/aes";
+        
+        
+        subgraph "cluster_crypto/aes.KeySizeError" {
+        fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(KeySizeError)";
+tooltip="type: crypto/aes.KeySizeError";
+penwidth="0.5";
+fontsize="15";
+        
+        "(crypto/aes.KeySizeError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_crypto/tls" {
+        tooltip="package: crypto/tls";
+fontsize="16";
+style="filled";
+fontname="bold";
+rank="sink";
+label="[crypto/tls]";
+URL="/?f=crypto/tls";
+penwidth="0.8";
+fillcolor="#E0FFE1";
+        
+        
+        subgraph "cluster_crypto/tls.RecordHeaderError" {
+        fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(RecordHeaderError)";
+tooltip="type: crypto/tls.RecordHeaderError";
+penwidth="0.5";
+fontsize="15";
+        
+        "(crypto/tls.RecordHeaderError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_crypto/tls.alert" {
+        penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(alert)";
+tooltip="type: crypto/tls.alert";
+        
+        "(crypto/tls.alert).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_crypto/x509" {
+        penwidth="0.8";
+tooltip="package: crypto/x509";
+fontsize="16";
+style="filled";
+fillcolor="#E0FFE1";
+fontname="bold";
+rank="sink";
+label="[crypto/x509]";
+URL="/?f=crypto/x509";
+        
+        
+        subgraph "cluster_crypto/x509.CertificateInvalidError" {
+        penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(CertificateInvalidError)";
+tooltip="type: crypto/x509.CertificateInvalidError";
+        
+        "(crypto/x509.CertificateInvalidError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_crypto/x509.HostnameError" {
+        labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(HostnameError)";
+tooltip="type: crypto/x509.HostnameError";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+        
+        "(crypto/x509.HostnameError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_crypto/x509.SystemRootsError" {
+        fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(SystemRootsError)";
+tooltip="type: crypto/x509.SystemRootsError";
+penwidth="0.5";
+        
+        "(crypto/x509.SystemRootsError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_crypto/x509.UnhandledCriticalExtension" {
+        style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(UnhandledCriticalExtension)";
+tooltip="type: crypto/x509.UnhandledCriticalExtension";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+        
+        "(crypto/x509.UnhandledCriticalExtension).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_crypto/x509.UnknownAuthorityError" {
+        style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(UnknownAuthorityError)";
+tooltip="type: crypto/x509.UnknownAuthorityError";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+        
+        "(crypto/x509.UnknownAuthorityError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_github.com/mattn/go-isatty" {
+        fontname="bold";
+penwidth="0.8";
+fillcolor="lightyellow";
+rank="sink";
+label="[isatty]";
+URL="/?f=github.com/mattn/go-isatty";
+tooltip="package: github.com/mattn/go-isatty";
+fontsize="16";
+style="filled";
+        
+        "github.com/mattn/go-isatty.IsTerminal" [ label="IsTerminal" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+        subgraph "cluster_github.com/pkg/errors" {
+        style="filled";
+fillcolor="lightyellow";
+URL="/?f=github.com/pkg/errors";
+rank="sink";
+label="[errors]";
+tooltip="package: github.com/pkg/errors";
+penwidth="0.8";
+fontsize="16";
+fontname="bold";
+        
+        
+        subgraph "cluster_*github.com/pkg/errors.fundamental" {
+        label="(*fundamental)";
+tooltip="type: *github.com/pkg/errors.fundamental";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+        
+        "(*github.com/pkg/errors.fundamental).Error" [ penwidth="1.5" fillcolor="moccasin" label="Error" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_math/rand" {
+        penwidth="0.8";
+fillcolor="#E0FFE1";
+rank="sink";
+URL="/?f=math/rand";
+fontsize="16";
+style="filled";
+fontname="bold";
+label="[math/rand]";
+tooltip="package: math/rand";
+        
+        "math/rand.Intn" [ fillcolor="#adedad" label="Intn" penwidth="1.5" ]
+        
+    }
+
+    }
+
+    "blitter.com/go/xs/xs.reqTunnel" -> "blitter.com/go/xs/logger.LogDebug" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.reqTunnel" -> "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.launchTuns" -> "blitter.com/go/xs/xs.reqTunnel" [  ]
+    "blitter.com/go/xs/xs.main$3" -> "math/rand.Intn" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main$3" -> "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doCopyMode" -> "(blitter.com/go/xs.Session).Cmd" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doCopyMode" -> "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doCopyMode" -> "(blitter.com/go/xs/xsnet.Conn).Read" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doCopyMode" -> "(*blitter.com/go/xs/xsnet.Conn).SetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doCopyMode" -> "(blitter.com/go/xs/xsnet.Conn).GetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.copyBuffer" -> "(blitter.com/go/xs/xsnet.Conn).Write" [ color="saddlebrown" style="dashed" ]
+    "blitter.com/go/xs/xs.copyBuffer" -> "blitter.com/go/xs/xs.copyBuffer$1" [ style="dashed" ]
+    "blitter.com/go/xs/xs.copyBuffer" -> "blitter.com/go/xs/xs.copyBuffer$2" [ style="dashed" ]
+    "blitter.com/go/xs/xs.copyBuffer" -> "blitter.com/go/xs/xs.copyBuffer$3" [ style="dashed" ]
+    "blitter.com/go/xs/xs.Copy" -> "blitter.com/go/xs/xs.copyBuffer" [  ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "blitter.com/go/xs/xs.doShellMode$1$1" [ arrowhead="normalnoneodiamond" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "blitter.com/go/xs.Restore" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(blitter.com/go/xs/xsnet.Conn).GetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(*blitter.com/go/xs.Session).SetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(blitter.com/go/xs.Session).Status" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "blitter.com/go/xs/xs.exitWithStatus" [  ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/x509.CertificateInvalidError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/aes.KeySizeError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/x509.HostnameError).Error" [ color="saddlebrown" style="dashed" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/x509.UnhandledCriticalExtension).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(context.deadlineExceededError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(compress/flate.CorruptInputError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/tls.RecordHeaderError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/x509.UnknownAuthorityError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/x509.SystemRootsError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(compress/flate.InternalError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(crypto/tls.alert).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$1" -> "(*github.com/pkg/errors.fundamental).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode" -> "blitter.com/go/xs/xs.doShellMode$1" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xs.handleTermResizes$1" -> "blitter.com/go/xs/xs.GetSize" [  ]
+    "blitter.com/go/xs/xs.handleTermResizes$1" -> "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.handleTermResizes" -> "blitter.com/go/xs/xs.handleTermResizes$1" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xs.doShellMode" -> "blitter.com/go/xs/xs.handleTermResizes" [  ]
+    "blitter.com/go/xs/xs.doShellMode$2$1" -> "blitter.com/go/xs/xs.Copy" [  ]
+    "blitter.com/go/xs/xs.doShellMode$2" -> "blitter.com/go/xs/xs.doShellMode$2$1" [  ]
+    "blitter.com/go/xs/xs.doShellMode$2" -> "blitter.com/go/xs.Restore" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.doShellMode$2" -> "blitter.com/go/xs/xs.exitWithStatus" [  ]
+    "blitter.com/go/xs/xs.doShellMode" -> "blitter.com/go/xs/xs.doShellMode$2" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs.Session).Op" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs.Session).Who" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs.Session).ConnHost" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs.Session).TermType" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs.Session).Cmd" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs.Session).AuthCookie" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.sendSessionParams" -> "(blitter.com/go/xs/xsnet.Conn).Write" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.parseNonSwitchArgs" [  ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.main$1" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.exitWithStatus" [  ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/logger.New" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xsnet.Init" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xsnet.Dial" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "(*blitter.com/go/xs/xsnet.Conn).Close" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "github.com/mattn/go-isatty.IsTerminal" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs.MakeRaw" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main$2" -> "blitter.com/go/xs.Restore" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.main$2" [ arrowhead="normalnoneodiamond" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs.ReadPassword" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs.NewSession" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.sendSessionParams" [  ]
+    "blitter.com/go/xs/xs.main" -> "(blitter.com/go/xs/xsnet.Conn).Read" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "(*blitter.com/go/xs.Session).SetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.rejectUserMsg" -> "blitter.com/go/xs/spinsult.GetSentence" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.rejectUserMsg" [  ]
+    "blitter.com/go/xs/xs.main" -> "(*blitter.com/go/xs/xsnet.Conn).SetupChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "(*blitter.com/go/xs/xsnet.Conn).EnableChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "(*blitter.com/go/xs/xsnet.Conn).DisableChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "(*blitter.com/go/xs/xsnet.Conn).ShutdownChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.main$3" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.launchTuns" [  ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.doShellMode" [  ]
+    "blitter.com/go/xs/xs.main" -> "(blitter.com/go/xs.Session).Status" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.doCopyMode" [  ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs.Restore" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.usageShell" [ style="dashed" ]
+    "blitter.com/go/xs/xs.main" -> "blitter.com/go/xs/xs.usageCp" [ style="dashed" ]
+}

hkexsh/hkexsh.go

@@ -1,4 +1,4 @@
-// hkexsh client
+// xs client
 //
 // Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
@@ -33,10 +33,10 @@ import (
 	"net/http"
 	_ "net/http/pprof"
 
-	hkexsh "blitter.com/go/hkexsh"
-	"blitter.com/go/hkexsh/hkexnet"
-	"blitter.com/go/hkexsh/logger"
-	"blitter.com/go/hkexsh/spinsult"
+	xs "blitter.com/go/xs"
+	"blitter.com/go/xs/xsnet"
+	"blitter.com/go/xs/logger"
+	"blitter.com/go/xs/spinsult"
 	isatty "github.com/mattn/go-isatty"
 )
 
@@ -110,7 +110,7 @@ type (
 // some client escape sequences to trigger special actions during
 // interactive sessions.
 //
-// (See go doc hkexsh/hkexsh.{escSeqs,escHandler})
+// (See go doc xs/xs.{escSeqs,escHandler})
 func Copy(dst io.Writer, src io.Reader) (written int64, err error) {
 	written, err = copyBuffer(dst, src, nil)
 	return
@@ -123,7 +123,7 @@ func Copy(dst io.Writer, src io.Reader) (written int64, err error) {
 // go stdlib pkg/io, with escape sequence interpretation to trigger
 // some special client-side actions.
 //
-// (See go doc hkexsh/hkexsh.{escSeqs,escHandler})
+// (See go doc xs/xs.{escSeqs,escHandler})
 func copyBuffer(dst io.Writer, src io.Reader, buf []byte) (written int64, err error) {
 	// NOTE: using dst.Write() in these esc funcs will cause the output
 	// to function as a 'macro', outputting as if user typed the sequence
@@ -240,10 +240,10 @@ func GetSize() (cols, rows int, err error) {
 	return
 }
 
-// doCopyMode begins a secure hkexsh local<->remote file copy operation.
+// doCopyMode begins a secure xs local<->remote file copy operation.
 //
 // TODO: reduce gocyclo
-func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, rec *hkexsh.Session) (exitStatus uint32, err error) {
+func doCopyMode(conn *xsnet.Conn, remoteDest bool, files string, rec *xs.Session) (exitStatus uint32, err error) {
 	if remoteDest {
 		log.Println("local files:", files, "remote filepath:", string(rec.Cmd()))
 
@@ -328,7 +328,7 @@ func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, rec *hkexsh.S
 			log.Println("Sending local exitStatus:", exitStatus)
 			r := make([]byte, 4)
 			binary.BigEndian.PutUint32(r, exitStatus)
-			_, we := conn.WritePacket(r, hkexnet.CSOExitStatus)
+			_, we := conn.WritePacket(r, xsnet.CSOExitStatus)
 			if we != nil {
 				fmt.Println("Error:", we)
 			}
@@ -398,9 +398,9 @@ func doCopyMode(conn *hkexnet.Conn, remoteDest bool, files string, rec *hkexsh.S
 	return
 }
 
-// doShellMode begins an hkexsh shell session (one-shot command or
+// doShellMode begins an xs shell session (one-shot command or
 // interactive).
-func doShellMode(isInteractive bool, conn *hkexnet.Conn, oldState *hkexsh.State, rec *hkexsh.Session) {
+func doShellMode(isInteractive bool, conn *xsnet.Conn, oldState *xs.State, rec *xs.Session) {
 	//client reader (from server) goroutine
 	//Read remote end's stdout
 
@@ -420,7 +420,7 @@ func doShellMode(isInteractive bool, conn *hkexnet.Conn, oldState *hkexsh.State,
 		// exit with inerr == nil
 		_, inerr := io.Copy(os.Stdout, conn)
 		if inerr != nil {
-			_ = hkexsh.Restore(int(os.Stdin.Fd()), oldState) // #nosec
+			_ = xs.Restore(int(os.Stdin.Fd()), oldState) // #nosec
 			// Copy operations and user logging off will cause
 			// a "use of closed network connection" so handle that
 			// gracefully here
@@ -435,7 +435,7 @@ func doShellMode(isInteractive bool, conn *hkexnet.Conn, oldState *hkexsh.State,
 
 		if isInteractive {
 			log.Println("[* Got EOF *]")
-			_ = hkexsh.Restore(int(os.Stdin.Fd()), oldState) // #nosec
+			_ = xs.Restore(int(os.Stdin.Fd()), oldState) // #nosec
 			exitWithStatus(int(rec.Status()))
 		}
 	}
@@ -453,7 +453,7 @@ func doShellMode(isInteractive bool, conn *hkexnet.Conn, oldState *hkexsh.State,
 		// TODO:.gv:doShellMode:2:shellStdinToRemote
 		shellStdinToRemote := func() {
 			defer wg.Done()
-			_, outerr := func(conn *hkexnet.Conn, r io.Reader) (w int64, e error) {
+			_, outerr := func(conn *xsnet.Conn, r io.Reader) (w int64, e error) {
 				// Copy() expects EOF so this will
 				// exit with outerr == nil
 				w, e = Copy(conn, r)
@@ -463,7 +463,7 @@ func doShellMode(isInteractive bool, conn *hkexnet.Conn, oldState *hkexsh.State,
 			if outerr != nil {
 				log.Println(outerr)
 				fmt.Println(outerr)
-				_ = hkexsh.Restore(int(os.Stdin.Fd()), oldState) // #nosec
+				_ = xs.Restore(int(os.Stdin.Fd()), oldState) // #nosec
 				log.Println("[Hanging up]")
 				exitWithStatus(0)
 			}
@@ -500,8 +500,8 @@ func rejectUserMsg() string {
 // Transmit request to server for it to set up the remote end of a tunnel
 //
 // Server responds with [CSOTunAck:rport] or [CSOTunRefused:rport]
-// (handled in hkexnet.Read())
-func reqTunnel(hc *hkexnet.Conn, lp uint16, p string /*net.Addr*/, rp uint16) {
+// (handled in xsnet.Read())
+func reqTunnel(hc *xsnet.Conn, lp uint16, p string /*net.Addr*/, rp uint16) {
 	// Write request to server so it can attempt to set up its end
 	var bTmp bytes.Buffer
 	if e := binary.Write(&bTmp, binary.BigEndian, lp); e != nil {
@@ -511,7 +511,7 @@ func reqTunnel(hc *hkexnet.Conn, lp uint16, p string /*net.Addr*/, rp uint16) {
 		fmt.Fprintln(os.Stderr, "reqTunnel:", e) // nolint: errcheck
 	}
 	_ = logger.LogDebug(fmt.Sprintln("[Client sending CSOTunSetup]")) // nolint: gosec
-	if n, e := hc.WritePacket(bTmp.Bytes(), hkexnet.CSOTunSetup); e != nil || n != len(bTmp.Bytes()) {
+	if n, e := hc.WritePacket(bTmp.Bytes(), xsnet.CSOTunSetup); e != nil || n != len(bTmp.Bytes()) {
 		fmt.Fprintln(os.Stderr, "reqTunnel:", e) // nolint: errcheck
 	}
 }
@@ -551,7 +551,7 @@ func parseNonSwitchArgs(a []string) (user, host, path string, isDest bool, other
 	return fancyUser, fancyHost, fancyPath, isDest, otherArgs
 }
 
-func launchTuns(conn *hkexnet.Conn, remoteHost string, tuns string) {
+func launchTuns(conn *xsnet.Conn, remoteHost string, tuns string) {
 	remAddrs, _ := net.LookupHost(remoteHost) // nolint: gosec
 
 	if tuns == "" {
@@ -566,7 +566,7 @@ func launchTuns(conn *hkexnet.Conn, remoteHost string, tuns string) {
 	}
 }
 
-func sendSessionParams(conn io.Writer /* *hkexnet.Conn*/, rec *hkexsh.Session) (e error) {
+func sendSessionParams(conn io.Writer /* *xsnet.Conn*/, rec *xs.Session) (e error) {
 	_, e = fmt.Fprintf(conn, "%d %d %d %d %d %d\n",
 		len(rec.Op()), len(rec.Who()), len(rec.ConnHost()), len(rec.TermType()), len(rec.Cmd()), len(rec.AuthCookie(true)))
 	if e != nil {
@@ -641,7 +641,7 @@ func main() {
 	// Find out what program we are (shell or copier)
 	myPath := strings.Split(os.Args[0], string(os.PathSeparator))
 	if myPath[len(myPath)-1] != "hkexcp" && myPath[len(myPath)-1] != "hkexcp.exe" {
-		// hkexsh accepts a command (-x) but not
+		// xs accepts a command (-x) but not
 		// a srcpath (-r) or dstpath (-t)
 		flag.StringVar(&cmdStr, "x", "", "run <`command`> (if not specified, run interactive shell)")
 		flag.StringVar(&tunSpecStr, "T", "", "``tunnelspec - localPort:remotePort[,localPort:remotePort,...]")
@@ -742,8 +742,8 @@ func main() {
 	// either the shell session or copy operation.
 	_ = shellMode
 
-	Log, _ = logger.New(logger.LOG_USER|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR, "hkexsh") // nolint: errcheck,gosec
-	hkexnet.Init(dbg, "hkexsh", logger.LOG_USER|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR)
+	Log, _ = logger.New(logger.LOG_USER|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR, "xs") // nolint: errcheck,gosec
+	xsnet.Init(dbg, "xs", logger.LOG_USER|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR)
 	if dbg {
 		log.SetOutput(Log)
 	} else {
@@ -753,7 +753,7 @@ func main() {
 	if !gopt {
 		// See if we can log in via an auth token
 		u, _ := user.Current() // nolint: gosec
-		ab, aerr := ioutil.ReadFile(fmt.Sprintf("%s/.hkexsh_id", u.HomeDir))
+		ab, aerr := ioutil.ReadFile(fmt.Sprintf("%s/.xs_id", u.HomeDir))
 		if aerr == nil {
 			idx := strings.Index(string(ab), remoteHost)
 			if idx >= 0 {
@@ -767,7 +767,7 @@ func main() {
 				_, _ = fmt.Fprintln(os.Stderr, "[no authtoken, use -g to request one from server]")
 			}
 		} else {
-			log.Printf("[cannot read %s/.hkexsh_id]\n", u.HomeDir)
+			log.Printf("[cannot read %s/.xs_id]\n", u.HomeDir)
 		}
 	}
 
@@ -826,7 +826,7 @@ func main() {
 	if kcpMode != "unused" {
 			proto = "kcp"
 	}
-	conn, err := hkexnet.Dial(proto, server, cipherAlg, hmacAlg, kexAlg, kcpMode)
+	conn, err := xsnet.Dial(proto, server, cipherAlg, hmacAlg, kexAlg, kcpMode)
 	if err != nil {
 		fmt.Println(err)
 		exitWithStatus(3)
@@ -837,16 +837,16 @@ func main() {
 	// Set stdin in raw mode if it's an interactive session
 	// TODO: send flag to server side indicating this
 	//  affects shell command used
-	var oldState *hkexsh.State
+	var oldState *xs.State
 	if shellMode {
 		if isatty.IsTerminal(os.Stdin.Fd()) {
-			oldState, err = hkexsh.MakeRaw(int(os.Stdin.Fd()))
+			oldState, err = xs.MakeRaw(int(os.Stdin.Fd()))
 			if err != nil {
 				panic(err)
 			}
 			// #gv:s/label=\"main\$1\"/label=\"deferRestore\"/
 			// TODO:.gv:main:1:deferRestore
-			defer func() { _ = hkexsh.Restore(int(os.Stdin.Fd()), oldState) }() // nolint: errcheck,gosec
+			defer func() { _ = xs.Restore(int(os.Stdin.Fd()), oldState) }() // nolint: errcheck,gosec
 		} else {
 			log.Println("NOT A TTY")
 		}
@@ -855,7 +855,7 @@ func main() {
 	if len(authCookie) == 0 {
 		//No auth token, prompt for password
 		fmt.Printf("Gimme cookie:")
-		ab, e := hkexsh.ReadPassword(int(os.Stdin.Fd()))
+		ab, e := xs.ReadPassword(int(os.Stdin.Fd()))
 		fmt.Printf("\r\n")
 		if e != nil {
 			panic(e)
@@ -866,7 +866,7 @@ func main() {
 	runtime.GC()
 
 	// Set up session params and send over to server
-	rec := hkexsh.NewSession(op, []byte(uname), []byte(remoteHost), []byte(os.Getenv("TERM")), []byte(cmdStr), []byte(authCookie), 0)
+	rec := xs.NewSession(op, []byte(uname), []byte(remoteHost), []byte(os.Getenv("TERM")), []byte(cmdStr), []byte(authCookie), 0)
 	sendErr := sendSessionParams(&conn, rec)
 	if sendErr != nil {
 		log.Fatal(sendErr)
@@ -909,7 +909,7 @@ func main() {
 				// FIXME: keepAlives should probably have small random packet len/data as well
 				// to further obscure them vs. interactive or tunnel data
 				// keepAlives must be  >=2 bytes, due to processing elsewhere
-				conn.WritePacket([]byte{0, 0}, hkexnet.CSOTunKeepAlive) // nolint: errcheck,gosec
+				conn.WritePacket([]byte{0, 0}, xsnet.CSOTunKeepAlive) // nolint: errcheck,gosec
 			}
 		}
 		go keepAliveWorker()
@@ -924,13 +924,13 @@ func main() {
 		}
 
 		if rec.Status() != 0 {
-			_ = hkexsh.Restore(int(os.Stdin.Fd()), oldState)                     // nolint: errcheck,gosec
+			_ = xs.Restore(int(os.Stdin.Fd()), oldState)                     // nolint: errcheck,gosec
 			fmt.Fprintln(os.Stderr, "Session exited with status:", rec.Status()) // nolint: errcheck
 		}
 	}
 
 	if oldState != nil {
-		_ = hkexsh.Restore(int(os.Stdin.Fd()), oldState) // nolint: gosec
+		_ = xs.Restore(int(os.Stdin.Fd()), oldState) // nolint: gosec
 	}
 
 	exitWithStatus(int(rec.Status()))

hkexshd.initrc

@@ -1,11 +1,11 @@
 #!/sbin/openrc-run
 
-SVCNAME=hkexshd
-HKEXSHD_PIDFILE=/var/run/hkexshd.pid
-HKEXSHD_USER=root
-HKEXSHD_HOME=/var/run
+SVCNAME=xsd
+XSD_PIDFILE=/var/run/xsd.pid
+XSD_USER=root
+XSD_HOME=/var/run
 INST_PREFIX=/usr/local
-COMMAND=$INST_PREFIX/sbin/hkexshd
+COMMAND=$INST_PREFIX/sbin/xsd
 ARGS=""
 
 depend() {
@@ -25,8 +25,8 @@ start() {
 
     ebegin "Starting ${SVCNAME}"
     start-stop-daemon \
-        -d ${HKEXSHD_HOME} \
-        --make-pidfile --pidfile ${HKEXSHD_PIDFILE} \
+        -d ${XSD_HOME} \
+        --make-pidfile --pidfile ${XSD_PIDFILE} \
         --start --quiet --background \
         --exec "${COMMAND}" "${ARGS}"
     eend $?
@@ -34,6 +34,6 @@ start() {
 
 stop() {
     ebegin "Stopping ${SVCNAME}"
-    start-stop-daemon --stop --quiet --pidfile $HKEXSHD_PIDFILE
+    start-stop-daemon --stop --quiet --pidfile $XSD_PIDFILE
     eend $?
 }

hkexshd/Makefile

@@ -10,8 +10,8 @@ clean:
 	$(RM) $(EXE) $(EXE).exe
 
 vis:
-	go-callvis -file hkexshd-vis -format png -ignore $(EXTPKGS) -group pkg,type .
-	../fixup-gv.sh hkexshd.go && cat hkexshd-vis.gv | dot -Tpng -ohkexshd-vis-fixedup.png
+	go-callvis -file xsd-vis -format png -ignore $(EXTPKGS) -group pkg,type .
+	../fixup-gv.sh xsd.go && cat xsd-vis.gv | dot -Tpng -oxsd-vis-fixedup.png
 
 lint:
 	-gometalinter --deadline=60s | sort

xsd/xsd-vis.gv

@@ -0,0 +1,347 @@
+digraph gocallvis {
+    label="blitter.com/go/xs/xsd";
+    labeljust="l";
+    fontname="Arial";
+    fontsize="14";
+    rankdir="LR";
+    bgcolor="lightgray";
+    style="solid";
+    penwidth="0.5";
+    pad="0.0";
+    nodesep="0.35";
+
+    node [shape="ellipse" style="filled" fillcolor="honeydew" fontname="Verdana" penwidth="1.0" margin="0.05,0.0"];
+    edge [minlen="2"]
+
+    subgraph "cluster_focus" {
+        label="main";
+labelloc="t";
+labeljust="c";
+fontsize="18";
+bgcolor="#e6ecfa";
+        
+        "blitter.com/go/xs/xsd.main$2" [ style="dotted,filled" fillcolor="lightblue" label="main$2" ]
+        "blitter.com/go/xs/xsd.GenAuthToken" [ fillcolor="lightblue" label="GenAuthToken" penwidth="1.5" ]
+        "blitter.com/go/xs/xsd.runShellAs" [ fillcolor="lightblue" label="runShellAs" penwidth="0.5" ]
+        "blitter.com/go/xs/xsd.runShellAs$1" [ fillcolor="lightblue" label="deferPtmxClose" style="dotted,filled" ]
+        "blitter.com/go/xs/xsd.ptsName" [ label="ptsName" penwidth="0.5" fillcolor="lightblue" ]
+        "blitter.com/go/xs/xsd.ioctl" [ fillcolor="lightblue" label="ioctl" penwidth="0.5" ]
+        "blitter.com/go/xs/xsd.runShellAs$2" [ fillcolor="lightblue" label="termResizeWatcher" style="dotted,filled" ]
+        "blitter.com/go/xs/xsd.runShellAs$3" [ style="dotted,filled" fillcolor="lightblue" label="stdinToPtyWorker" ]
+        "blitter.com/go/xs/xsd.runShellAs$4" [ style="dotted,filled" fillcolor="lightblue" label="deferChaffShutdown" ]
+        "blitter.com/go/xs/xsd.runShellAs$5" [ fillcolor="lightblue" label="ptyToStdoutWorker" style="dotted,filled" ]
+        "blitter.com/go/xs/xsd.runShellAs$6" [ fillcolor="lightblue" label="runShellAs$6" style="dotted,filled" ]
+        "blitter.com/go/xs/xsd.runClientToServerCopyAs" [ fillcolor="lightblue" label="runClientToServerCopyAs" penwidth="0.5" ]
+        "blitter.com/go/xs/xsd.runServerToClientCopyAs" [ fillcolor="lightblue" label="runServerToClientCopyAs" penwidth="0.5" ]
+        "blitter.com/go/xs/xsd.main" [ fillcolor="lightblue" label="main" penwidth="0.5" ]
+        "blitter.com/go/xs/xsd.main$1" [ fillcolor="lightblue" label="main$1" style="dotted,filled" ]
+        
+        subgraph "cluster_blitter.com/go/goutmp" {
+        URL="/?f=blitter.com/go/goutmp";
+tooltip="package: blitter.com/go/goutmp";
+fontsize="16";
+style="filled";
+fillcolor="lightyellow";
+fontname="bold";
+rank="sink";
+label="[goutmp]";
+penwidth="0.8";
+        
+        "blitter.com/go/goutmp.GetHost" [ fillcolor="moccasin" label="GetHost" penwidth="1.5" ]
+        "blitter.com/go/goutmp.Put_utmp" [ fillcolor="moccasin" label="Put_utmp" penwidth="1.5" ]
+        "blitter.com/go/goutmp.Unput_utmp" [ label="Unput_utmp" penwidth="1.5" fillcolor="moccasin" ]
+        "blitter.com/go/goutmp.Put_lastlog_entry" [ fillcolor="moccasin" label="Put_lastlog_entry" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs" {
+        fontsize="16";
+fontname="bold";
+rank="sink";
+penwidth="0.8";
+fillcolor="lightyellow";
+label="[xs]";
+URL="/?f=blitter.com/go/xs";
+tooltip="package: blitter.com/go/xs";
+style="filled";
+        
+        "blitter.com/go/xs.AuthUserByToken" [ fillcolor="moccasin" label="AuthUserByToken" penwidth="1.5" ]
+        "blitter.com/go/xs.AuthUserByPasswd" [ label="AuthUserByPasswd" penwidth="1.5" fillcolor="moccasin" ]
+        
+        subgraph "cluster_*blitter.com/go/xs.Session" {
+        tooltip="type: *blitter.com/go/xs.Session";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(*Session)";
+        
+        "(*blitter.com/go/xs.Session).SetOp" [ fillcolor="moccasin" label="SetOp" penwidth="1.5" ]
+        "(*blitter.com/go/xs.Session).SetWho" [ penwidth="1.5" fillcolor="moccasin" label="SetWho" ]
+        "(*blitter.com/go/xs.Session).SetConnHost" [ penwidth="1.5" fillcolor="moccasin" label="SetConnHost" ]
+        "(*blitter.com/go/xs.Session).SetTermType" [ fillcolor="moccasin" label="SetTermType" penwidth="1.5" ]
+        "(*blitter.com/go/xs.Session).SetCmd" [ fillcolor="moccasin" label="SetCmd" penwidth="1.5" ]
+        "(*blitter.com/go/xs.Session).SetAuthCookie" [ fillcolor="moccasin" label="SetAuthCookie" penwidth="1.5" ]
+        "(*blitter.com/go/xs.Session).ClearAuthCookie" [ fillcolor="moccasin" label="ClearAuthCookie" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs.Session" {
+        fillcolor="wheat2";
+label="(Session)";
+tooltip="type: blitter.com/go/xs.Session";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+        
+        "(blitter.com/go/xs.Session).Op" [ fillcolor="moccasin" label="Op" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).Who" [ fillcolor="moccasin" label="Who" penwidth="1.5" ]
+        "(blitter.com/go/xs.Session).ConnHost" [ penwidth="1.5" fillcolor="moccasin" label="ConnHost" ]
+        "(blitter.com/go/xs.Session).Cmd" [ penwidth="1.5" fillcolor="moccasin" label="Cmd" ]
+        "(blitter.com/go/xs.Session).AuthCookie" [ label="AuthCookie" penwidth="1.5" fillcolor="moccasin" ]
+        "(blitter.com/go/xs.Session).TermType" [ fillcolor="moccasin" label="TermType" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_blitter.com/go/xs/logger" {
+        penwidth="0.8";
+fontsize="16";
+style="filled";
+fontname="bold";
+URL="/?f=blitter.com/go/xs/logger";
+fillcolor="lightyellow";
+rank="sink";
+label="[logger]";
+tooltip="package: blitter.com/go/xs/logger";
+        
+        "blitter.com/go/xs/logger.LogNotice" [ fillcolor="moccasin" label="LogNotice" penwidth="1.5" ]
+        "blitter.com/go/xs/logger.LogDebug" [ fillcolor="moccasin" label="LogDebug" penwidth="1.5" ]
+        "blitter.com/go/xs/logger.LogErr" [ fillcolor="moccasin" label="LogErr" penwidth="1.5" ]
+        "blitter.com/go/xs/logger.New" [ label="New" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs/xsnet" {
+        penwidth="0.8";
+label="[xsnet]";
+fillcolor="lightyellow";
+fontname="bold";
+rank="sink";
+URL="/?f=blitter.com/go/xs/xsnet";
+tooltip="package: blitter.com/go/xs/xsnet";
+fontsize="16";
+style="filled";
+        
+        "blitter.com/go/xs/xsnet.Init" [ fillcolor="moccasin" label="Init" penwidth="1.5" ]
+        "blitter.com/go/xs/xsnet.Listen" [ fillcolor="moccasin" label="Listen" penwidth="1.5" ]
+        
+        subgraph "cluster_*blitter.com/go/xs/xsnet.Conn" {
+        label="(*Conn)";
+tooltip="type: *blitter.com/go/xs/xsnet.Conn";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+        
+        "(*blitter.com/go/xs/xsnet.Conn).Close" [ fillcolor="moccasin" label="Close" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).RemoteAddr" [ fillcolor="moccasin" label="RemoteAddr" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).EnableChaff" [ fillcolor="moccasin" label="EnableChaff" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).DisableChaff" [ label="DisableChaff" penwidth="1.5" fillcolor="moccasin" ]
+        "(*blitter.com/go/xs/xsnet.Conn).ShutdownChaff" [ fillcolor="moccasin" label="ShutdownChaff" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).SetStatus" [ fillcolor="moccasin" label="SetStatus" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ fillcolor="moccasin" label="WritePacket" penwidth="1.5" ]
+        "(*blitter.com/go/xs/xsnet.Conn).SetupChaff" [ penwidth="1.5" fillcolor="moccasin" label="SetupChaff" ]
+        
+    }
+
+        subgraph "cluster_*blitter.com/go/xs/xsnet.HKExListener" {
+        labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(*HKExListener)";
+tooltip="type: *blitter.com/go/xs/xsnet.HKExListener";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+        
+        "(*blitter.com/go/xs/xsnet.HKExListener).Accept" [ penwidth="1.5" fillcolor="moccasin" label="Accept" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs/xsnet.Conn" {
+        tooltip="type: blitter.com/go/xs/xsnet.Conn";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(Conn)";
+        
+        "(blitter.com/go/xs/xsnet.Conn).Write" [ fillcolor="moccasin" label="Write" penwidth="1.5" ]
+        
+    }
+
+        subgraph "cluster_blitter.com/go/xs/xsnet.HKExListener" {
+        style="rounded,filled";
+fillcolor="wheat2";
+label="(HKExListener)";
+tooltip="type: blitter.com/go/xs/xsnet.HKExListener";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+labelloc="b";
+        
+        "(blitter.com/go/xs/xsnet.HKExListener).Close" [ label="Close" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_context" {
+        fontsize="16";
+fillcolor="#E0FFE1";
+label="[context]";
+tooltip="package: context";
+penwidth="0.8";
+style="filled";
+fontname="bold";
+rank="sink";
+URL="/?f=context";
+        
+        
+        subgraph "cluster_context.deadlineExceededError" {
+        labelloc="b";
+style="rounded,filled";
+fillcolor="#c2e3c2";
+label="(deadlineExceededError)";
+tooltip="type: context.deadlineExceededError";
+penwidth="0.5";
+fontsize="15";
+fontcolor="#222222";
+        
+        "(context.deadlineExceededError).Error" [ fillcolor="#adedad" label="Error" penwidth="1.5" ]
+        
+    }
+
+    }
+
+        subgraph "cluster_github.com/kr/pty" {
+        label="[pty]";
+URL="/?f=github.com/kr/pty";
+penwidth="0.8";
+style="filled";
+fillcolor="lightyellow";
+rank="sink";
+fontsize="16";
+fontname="bold";
+tooltip="package: github.com/kr/pty";
+        
+        "github.com/kr/pty.Start" [ fillcolor="moccasin" label="Start" penwidth="1.5" ]
+        "github.com/kr/pty.Setsize" [ label="Setsize" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+        subgraph "cluster_github.com/pkg/errors" {
+        fontname="bold";
+label="[errors]";
+style="filled";
+fontsize="16";
+fillcolor="lightyellow";
+rank="sink";
+URL="/?f=github.com/pkg/errors";
+tooltip="package: github.com/pkg/errors";
+penwidth="0.8";
+        
+        
+        subgraph "cluster_*github.com/pkg/errors.fundamental" {
+        fontcolor="#222222";
+labelloc="b";
+style="rounded,filled";
+fillcolor="wheat2";
+label="(*fundamental)";
+tooltip="type: *github.com/pkg/errors.fundamental";
+penwidth="0.5";
+fontsize="15";
+        
+        "(*github.com/pkg/errors.fundamental).Error" [ label="Error" penwidth="1.5" fillcolor="moccasin" ]
+        
+    }
+
+    }
+
+    }
+
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs/xsnet.Conn).Close" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).SetOp" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).SetWho" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).SetConnHost" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).SetTermType" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).SetCmd" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).SetAuthCookie" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs.Session).Op" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs.Session).Who" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs.Session).ConnHost" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs.Session).Cmd" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs.Session).AuthCookie" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs.AuthUserByToken" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs.Session).ClearAuthCookie" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs.AuthUserByPasswd" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs/xsnet.Conn).Write" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs/logger.LogNotice" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs/xsnet.Conn).RemoteAddr" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/goutmp.GetHost" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs/xsd.GenAuthToken" [  ]
+    "blitter.com/go/xs/xsd.main$2" -> "(blitter.com/go/xs.Session).TermType" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "github.com/kr/pty.Start" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.runShellAs$1" [ arrowhead="normalnoneodiamond" ]
+    "blitter.com/go/xs/xsd.ptsName" -> "blitter.com/go/xs/xsd.ioctl" [  ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.ptsName" [  ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/goutmp.Put_utmp" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs$2" -> "blitter.com/go/goutmp.Unput_utmp" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.runShellAs$2" [ arrowhead="normalnoneodiamond" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/goutmp.Put_lastlog_entry" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs$3" -> "github.com/kr/pty.Setsize" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.runShellAs$3" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xsd.runShellAs$4" -> "(context.deadlineExceededError).Error" [ color="saddlebrown" style="dashed" ]
+    "blitter.com/go/xs/xsd.runShellAs$4" -> "(*github.com/pkg/errors.fundamental).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.runShellAs$4" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "(*blitter.com/go/xs/xsnet.Conn).EnableChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs$5" -> "(*blitter.com/go/xs/xsnet.Conn).DisableChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs$5" -> "(*blitter.com/go/xs/xsnet.Conn).ShutdownChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.runShellAs$5" [ arrowhead="normalnoneodiamond" ]
+    "blitter.com/go/xs/xsd.runShellAs$6" -> "(context.deadlineExceededError).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs$6" -> "(*github.com/pkg/errors.fundamental).Error" [ style="dashed" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/xsd.runShellAs$6" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "blitter.com/go/xs/logger.LogDebug" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runShellAs" -> "(*blitter.com/go/xs/xsnet.Conn).SetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs/xsd.runShellAs" [  ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs/logger.LogErr" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs/xsnet.Conn).SetStatus" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runClientToServerCopyAs" -> "(*blitter.com/go/xs/xsnet.Conn).EnableChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runClientToServerCopyAs" -> "(*blitter.com/go/xs/xsnet.Conn).DisableChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runClientToServerCopyAs" -> "(*blitter.com/go/xs/xsnet.Conn).ShutdownChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs/xsd.runClientToServerCopyAs" [  ]
+    "blitter.com/go/xs/xsd.main$2" -> "(*blitter.com/go/xs/xsnet.Conn).WritePacket" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runServerToClientCopyAs" -> "(*blitter.com/go/xs/xsnet.Conn).EnableChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runServerToClientCopyAs" -> "(*blitter.com/go/xs/xsnet.Conn).DisableChaff" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.runServerToClientCopyAs" -> "(*blitter.com/go/xs/xsnet.Conn).ShutdownChaff" [ color="saddlebrown" arrowhead="normalnoneodiamond" ]
+    "blitter.com/go/xs/xsd.main$2" -> "blitter.com/go/xs/xsd.runServerToClientCopyAs" [  ]
+    "blitter.com/go/xs/xsd.main" -> "blitter.com/go/xs/logger.New" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main" -> "blitter.com/go/xs/xsnet.Init" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main$1" -> "blitter.com/go/xs/logger.LogNotice" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main" -> "blitter.com/go/xs/xsd.main$1" [ arrowhead="normalnoneodot" ]
+    "blitter.com/go/xs/xsd.main" -> "blitter.com/go/xs/xsnet.Listen" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main" -> "(blitter.com/go/xs/xsnet.HKExListener).Close" [ arrowhead="normalnoneodiamond" color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main" -> "(*blitter.com/go/xs/xsnet.HKExListener).Accept" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main" -> "(*blitter.com/go/xs/xsnet.Conn).SetupChaff" [ color="saddlebrown" ]
+    "blitter.com/go/xs/xsd.main" -> "blitter.com/go/xs/xsd.main$2" [ arrowhead="normalnoneodot" ]
+}

hkexshd/hkexshd.go

@@ -1,6 +1,6 @@
-// hkexshd server
+// xsd server
 //
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
@@ -28,9 +28,9 @@ import (
 	"unsafe"
 
 	"blitter.com/go/goutmp"
-	hkexsh "blitter.com/go/hkexsh"
-	"blitter.com/go/hkexsh/hkexnet"
-	"blitter.com/go/hkexsh/logger"
+	xs "blitter.com/go/xs"
+	"blitter.com/go/xs/xsnet"
+	"blitter.com/go/xs/logger"
 	"github.com/kr/pty"
 )
 
@@ -63,7 +63,7 @@ func ptsName(fd uintptr) (string, error) {
 
 /* -------------------------------------------------------------- */
 // Perform a client->server copy
-func runClientToServerCopyAs(who, ttype string, conn *hkexnet.Conn, fpath string, chaffing bool) (exitStatus uint32, err error) {
+func runClientToServerCopyAs(who, ttype string, conn *xsnet.Conn, fpath string, chaffing bool) (exitStatus uint32, err error) {
 	u, _ := user.Lookup(who) // nolint: gosec
 	var uid, gid uint32
 	fmt.Sscanf(u.Uid, "%d", &uid) // nolint: gosec,errcheck
@@ -139,7 +139,7 @@ func runClientToServerCopyAs(who, ttype string, conn *hkexnet.Conn, fpath string
 		log.Println("cmd exited immediately. Cannot get cmd.Wait().ExitStatus()")
 		err = errors.New("cmd exited prematurely")
 		//exitStatus = uint32(254)
-		exitStatus = hkexnet.CSEExecFail
+		exitStatus = xsnet.CSEExecFail
 	} else {
 		if err := c.Wait(); err != nil {
 			//fmt.Println("*** c.Wait() done ***")
@@ -163,7 +163,7 @@ func runClientToServerCopyAs(who, ttype string, conn *hkexnet.Conn, fpath string
 }
 
 // Perform a server->client copy
-func runServerToClientCopyAs(who, ttype string, conn *hkexnet.Conn, srcPath string, chaffing bool) (exitStatus uint32, err error) {
+func runServerToClientCopyAs(who, ttype string, conn *xsnet.Conn, srcPath string, chaffing bool) (exitStatus uint32, err error) {
 	u, err := user.Lookup(who)
 	if err != nil {
 		exitStatus = 1
@@ -225,7 +225,7 @@ func runServerToClientCopyAs(who, ttype string, conn *hkexnet.Conn, srcPath stri
 	err = c.Start() // returns immediately
 	if err != nil {
 		log.Printf("Command finished with error: %v", err)
-		return hkexnet.CSEExecFail, err // !?
+		return xsnet.CSEExecFail, err // !?
 	}
 	if err := c.Wait(); err != nil {
 		//fmt.Println("*** c.Wait() done ***")
@@ -253,7 +253,7 @@ func runServerToClientCopyAs(who, ttype string, conn *hkexnet.Conn, srcPath stri
 //
 // Uses ptys to support commands which expect a terminal.
 // nolint: gocyclo
-func runShellAs(who, hname, ttype, cmd string, interactive bool, conn *hkexnet.Conn, chaffing bool) (exitStatus uint32, err error) {
+func runShellAs(who, hname, ttype, cmd string, interactive bool, conn *xsnet.Conn, chaffing bool) (exitStatus uint32, err error) {
 	var wg sync.WaitGroup
 	u, err := user.Lookup(who)
 	if err != nil {
@@ -314,7 +314,7 @@ func runShellAs(who, hname, ttype, cmd string, interactive bool, conn *hkexnet.C
 	ptmx, err := pty.Start(c) // returns immediately with ptmx file
 	if err != nil {
 		log.Println(err)
-		return hkexnet.CSEPtyExecFail, err
+		return xsnet.CSEPtyExecFail, err
 	}
 	// Make sure to close the pty at the end.
 	// #gv:s/label=\"runShellAs\$1\"/label=\"deferPtmxClose\"/
@@ -326,11 +326,11 @@ func runShellAs(who, hname, ttype, cmd string, interactive bool, conn *hkexnet.C
 	// get pty info for system accounting (who, lastlog)
 	pts, pe := ptsName(ptmx.Fd())
 	if pe != nil {
-		return hkexnet.CSEPtyGetNameFail, err
+		return xsnet.CSEPtyGetNameFail, err
 	}
 	utmpx := goutmp.Put_utmp(who, pts, hname)
 	defer func() { goutmp.Unput_utmp(utmpx) }()
-	goutmp.Put_lastlog_entry("hkexsh", who, pts, hname)
+	goutmp.Put_lastlog_entry("xs", who, pts, hname)
 
 	log.Printf("[%s]\n", cmd)
 	if err != nil {
@@ -400,7 +400,7 @@ func runShellAs(who, hname, ttype, cmd string, interactive bool, conn *hkexnet.C
 					log.Printf("Exit Status: %d", exitStatus)
 				}
 			}
-			conn.SetStatus(hkexnet.CSOType(exitStatus))
+			conn.SetStatus(xsnet.CSOType(exitStatus))
 		} else {
 			logger.LogDebug("*** Main proc has exited. ***")
 			// Background jobs still may be running; close the
@@ -431,7 +431,7 @@ func GenAuthToken(who string, connhost string) string {
 
 // Demo of a simple server that listens and spawns goroutines for each
 // connecting client. Note this code is identical to standard tcp
-// server code, save for declaring 'hkex' rather than 'net'
+// server code, save for declaring 'xsnet' rather than 'net'
 // Listener and Conns. The KEx and encrypt/decrypt is done within the type.
 // Compare to 'serverp.go' in this directory to see the equivalence.
 // TODO: reduce gocyclo
@@ -478,8 +478,8 @@ func main() {
 		chaffBytesMax = 64
 	}
 
-	Log, _ = logger.New(logger.LOG_DAEMON|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR, "hkexshd") // nolint: gosec
-	hkexnet.Init(dbg, "hkexshd", logger.LOG_DAEMON|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR)
+	Log, _ = logger.New(logger.LOG_DAEMON|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR, "xsd") // nolint: gosec
+	xsnet.Init(dbg, "xsd", logger.LOG_DAEMON|logger.LOG_DEBUG|logger.LOG_NOTICE|logger.LOG_ERR)
 	if dbg {
 		log.SetOutput(Log)
 	} else {
@@ -513,7 +513,7 @@ func main() {
 	if kcpMode != "unused" {
 		proto = "kcp"
 	}
-	l, err := hkexnet.Listen(proto, laddr, kcpMode)
+	l, err := xsnet.Listen(proto, laddr, kcpMode)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -536,28 +536,28 @@ func main() {
 			// Handle the connection in a new goroutine.
 			// The loop then returns to accepting, so that
 			// multiple connections may be served concurrently.
-			go func(hc *hkexnet.Conn) (e error) {
+			go func(hc *xsnet.Conn) (e error) {
 				defer hc.Close() // nolint: errcheck
 
 				//We use io.ReadFull() here to guarantee we consume
-				//just the data we want for the hkexsh.Session, and no more.
+				//just the data we want for the xs.Session, and no more.
 				//Otherwise data will be sitting in the channel that isn't
 				//passed down to the command handlers.
-				var rec hkexsh.Session
+				var rec xs.Session
 				var len1, len2, len3, len4, len5, len6 uint32
 
 				n, err := fmt.Fscanf(hc, "%d %d %d %d %d %d\n", &len1, &len2, &len3, &len4, &len5, &len6)
-				log.Printf("hkexsh.Session read:%d %d %d %d %d %d\n", len1, len2, len3, len4, len5, len6)
+				log.Printf("xs.Session read:%d %d %d %d %d %d\n", len1, len2, len3, len4, len5, len6)
 
 				if err != nil || n < 6 {
-					log.Println("[Bad hkexsh.Session fmt]")
+					log.Println("[Bad xs.Session fmt]")
 					return err
 				}
 
 				tmp := make([]byte, len1)
 				_, err = io.ReadFull(hc, tmp)
 				if err != nil {
-					log.Println("[Bad hkexsh.Session.Op]")
+					log.Println("[Bad xs.Session.Op]")
 					return err
 				}
 				rec.SetOp(tmp)
@@ -565,7 +565,7 @@ func main() {
 				tmp = make([]byte, len2)
 				_, err = io.ReadFull(hc, tmp)
 				if err != nil {
-					log.Println("[Bad hkexsh.Session.Who]")
+					log.Println("[Bad xs.Session.Who]")
 					return err
 				}
 				rec.SetWho(tmp)
@@ -573,7 +573,7 @@ func main() {
 				tmp = make([]byte, len3)
 				_, err = io.ReadFull(hc, tmp)
 				if err != nil {
-					log.Println("[Bad hkexsh.Session.ConnHost]")
+					log.Println("[Bad xs.Session.ConnHost]")
 					return err
 				}
 				rec.SetConnHost(tmp)
@@ -581,7 +581,7 @@ func main() {
 				tmp = make([]byte, len4)
 				_, err = io.ReadFull(hc, tmp)
 				if err != nil {
-					log.Println("[Bad hkexsh.Session.TermType]")
+					log.Println("[Bad xs.Session.TermType]")
 					return err
 				}
 				rec.SetTermType(tmp)
@@ -589,7 +589,7 @@ func main() {
 				tmp = make([]byte, len5)
 				_, err = io.ReadFull(hc, tmp)
 				if err != nil {
-					log.Println("[Bad hkexsh.Session.Cmd]")
+					log.Println("[Bad xs.Session.Cmd]")
 					return err
 				}
 				rec.SetCmd(tmp)
@@ -597,20 +597,20 @@ func main() {
 				tmp = make([]byte, len6)
 				_, err = io.ReadFull(hc, tmp)
 				if err != nil {
-					log.Println("[Bad hkexsh.Session.AuthCookie]")
+					log.Println("[Bad xs.Session.AuthCookie]")
 					return err
 				}
 				rec.SetAuthCookie(tmp)
 
-				log.Printf("[hkexsh.Session: op:%c who:%s connhost:%s cmd:%s auth:****]\n",
+				log.Printf("[xs.Session: op:%c who:%s connhost:%s cmd:%s auth:****]\n",
 					rec.Op()[0], string(rec.Who()), string(rec.ConnHost()), string(rec.Cmd()))
 
 				var valid bool
 				var allowedCmds string // Currently unused
-				if hkexsh.AuthUserByToken(string(rec.Who()), string(rec.ConnHost()), string(rec.AuthCookie(true))) {
+				if xs.AuthUserByToken(string(rec.Who()), string(rec.ConnHost()), string(rec.AuthCookie(true))) {
 					valid = true
 				} else {
-					valid, allowedCmds = hkexsh.AuthUserByPasswd(string(rec.Who()), string(rec.AuthCookie(true)), "/etc/hkexsh.passwd")
+					valid, allowedCmds = xs.AuthUserByPasswd(string(rec.Who()), string(rec.AuthCookie(true)), "/etc/xs.passwd")
 				}
 
 				// Security scrub
@@ -633,7 +633,7 @@ func main() {
 					hname := goutmp.GetHost(addr.String())
 					logger.LogNotice(fmt.Sprintf("[Generating autologin token for [%s@%s]]\n", rec.Who(), hname)) // nolint: gosec,errcheck
 					token := GenAuthToken(string(rec.Who()), string(rec.ConnHost()))
-					tokenCmd := fmt.Sprintf("echo \"%s\" | tee -a ~/.hkexsh_id", token)
+					tokenCmd := fmt.Sprintf("echo \"%s\" | tee -a ~/.xs_id", token)
 					cmdStatus, runErr := runShellAs(string(rec.Who()), hname, string(rec.TermType()), tokenCmd, false, hc, chaffEnabled)
 					// Returned hopefully via an EOF or exit/logout;
 					// Clear current op so user can enter next, or EOF
@@ -642,7 +642,7 @@ func main() {
 						logger.LogErr(fmt.Sprintf("[Error generating autologin token for %s@%s]\n", rec.Who(), hname)) // nolint: gosec,errcheck
 					} else {
 						log.Printf("[Autologin token generation completed for %s@%s, status %d]\n", rec.Who(), hname, cmdStatus)
-						hc.SetStatus(hkexnet.CSOType(cmdStatus))
+						hc.SetStatus(xsnet.CSOType(cmdStatus))
 					}
 				} else if rec.Op()[0] == 'c' {
 					// Non-interactive command
@@ -657,7 +657,7 @@ func main() {
 						logger.LogErr(fmt.Sprintf("[Error spawning cmd for %s@%s]\n", rec.Who(), hname)) // nolint: gosec,errcheck
 					} else {
 						logger.LogNotice(fmt.Sprintf("[Command completed for %s@%s, status %d]\n", rec.Who(), hname, cmdStatus)) // nolint: gosec,errcheck
-						hc.SetStatus(hkexnet.CSOType(cmdStatus))
+						hc.SetStatus(xsnet.CSOType(cmdStatus))
 					}
 				} else if rec.Op()[0] == 's' {
 					// Interactive session
@@ -673,7 +673,7 @@ func main() {
 						Log.Err(fmt.Sprintf("[Error spawning shell for %s@%s]\n", rec.Who(), hname)) // nolint: gosec,errcheck
 					} else {
 						logger.LogNotice(fmt.Sprintf("[Shell completed for %s@%s, status %d]\n", rec.Who(), hname, cmdStatus)) // nolint: gosec,errcheck
-						hc.SetStatus(hkexnet.CSOType(cmdStatus))
+						hc.SetStatus(xsnet.CSOType(cmdStatus))
 					}
 				} else if rec.Op()[0] == 'D' {
 					// File copy (destination) operation - client copy to server
@@ -690,13 +690,13 @@ func main() {
 					} else {
 						logger.LogNotice(fmt.Sprintf("[Command completed for %s@%s, status %d]\n", rec.Who(), hname, cmdStatus)) // nolint: gosec,errcheck
 					}
-					hc.SetStatus(hkexnet.CSOType(cmdStatus))
+					hc.SetStatus(xsnet.CSOType(cmdStatus))
 
 					// Send CSOExitStatus *before* client closes channel
 					s := make([]byte, 4)
 					binary.BigEndian.PutUint32(s, cmdStatus)
 					log.Printf("** cp writing closeStat %d at Close()\n", cmdStatus)
-					hc.WritePacket(s, hkexnet.CSOExitStatus) // nolint: gosec,errcheck
+					hc.WritePacket(s, xsnet.CSOExitStatus) // nolint: gosec,errcheck
 				} else if rec.Op()[0] == 'S' {
 					// File copy (src) operation - server copy to client
 					log.Printf("[Server->Client copy]\n")
@@ -712,12 +712,12 @@ func main() {
 					}
 					// Clear current op so user can enter next, or EOF
 					rec.SetOp([]byte{0})
-					hc.SetStatus(hkexnet.CSOType(cmdStatus))
+					hc.SetStatus(xsnet.CSOType(cmdStatus))
 					//fmt.Println("Waiting for EOF from other end.")
 					//_, _ = hc.Read(nil /*ackByte*/)
 					//fmt.Println("Got remote end ack.")
 				} else {
-					logger.LogErr(fmt.Sprintln("[Bad hkexsh.Session]")) // nolint: gosec,errcheck
+					logger.LogErr(fmt.Sprintln("[Bad xs.Session]")) // nolint: gosec,errcheck
 				}
 				return
 			}(&conn) // nolint: errcheck

hkexnet/hkexchan.go

@@ -1,6 +1,6 @@
-package hkexnet
+package xsnet
 
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
@@ -57,7 +57,7 @@ func expandKeyMat(keymat []byte, blocksize int) []byte {
 }
 
 /* Support functionality to set up encryption after a channel has
-been negotiated via hkexnet.go
+been negotiated via xsnet.go
 */
 func (hc Conn) getStream(keymat []byte) (rc cipher.Stream, mc hash.Hash, err error) {
 	var key []byte

hkexnet/consts.go

@@ -1,16 +1,16 @@
-// consts.go - consts for hkexnet
+// consts.go - consts for xsnet
 
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
 // golang implementation by Russ Magee (rmagee_at_gmail.com)
-package hkexnet
+package xsnet
 
 // KEX algorithm values
 //
 // Specified (in string form) as the extensions parameter
-// to hkexnet.Dial()
+// to xsnet.Dial()
 // Alg is sent in a uint8 so there are up to 256 possible
 const (
 	KEX_HERRADURA256 = iota // this MUST be first for default if omitted in ctor
@@ -32,7 +32,7 @@ const (
 )
 
 // Sent from client to server in order to specify which
-// algo shall be used (see hkexnet.KEX_HERRADURA256, ...)
+// algo shall be used (see xsnet.KEX_HERRADURA256, ...)
 type KEXAlg uint8
 
 // Extended exit status codes - indicate comm/pty issues

hkexnet/kcp.go

@@ -1,4 +1,4 @@
-package hkexnet
+package xsnet
 
 import (
 	"crypto/sha1"
@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"net"
 
-	"blitter.com/go/hkexsh/logger"
+	"blitter.com/go/xs/logger"
 	kcp "github.com/xtaci/kcp-go"
 	"golang.org/x/crypto/pbkdf2"
 )

hkexnet/hkexnet.go

@@ -1,13 +1,13 @@
-// hkexnet.go - net.Conn compatible channel setup with encrypted/HMAC
+// xsnet.go - net.Conn compatible channel setup with encrypted/HMAC
 // negotiation
 
-// Copyright (c) 2017-2018 Russell Magee
+// Copyright (c) 2017-2019 Russell Magee
 // Licensed under the terms of the MIT license (see LICENSE.mit in this
 // distribution)
 //
 // golang implementation by Russ Magee (rmagee_at_gmail.com)
 
-package hkexnet
+package xsnet
 
 // Implementation of HKEx-wrapped versions of the golang standard
 // net package interfaces, allowing clients and servers to simply replace
@@ -41,7 +41,7 @@ import (
 	"time"
 
 	hkex "blitter.com/go/herradurakex"
-	"blitter.com/go/hkexsh/logger"
+	"blitter.com/go/xs/logger"
 	kyber "git.schwanenlied.me/yawning/kyber.git"
 	newhope "git.schwanenlied.me/yawning/newhope.git"
 )
@@ -107,7 +107,7 @@ func (t *TunEndpoint) String() string {
 
 func _initLogging(d bool, c string, f logger.Priority) {
 	if Log == nil {
-		Log, _ = logger.New(f, fmt.Sprintf("%s:hkexnet", c))
+		Log, _ = logger.New(f, fmt.Sprintf("%s:xsnet", c))
 	}
 	if d {
 		log.SetFlags(0) // syslog will have date,time
@@ -175,7 +175,7 @@ func (hc *Conn) SetOpts(opts uint32) {
 	hc.opts = opts
 }
 
-// Return a new hkexnet.Conn
+// Return a new xsnet.Conn
 //
 // Note this is internal: use Dial() or Accept()
 func _new(kexAlg KEXAlg, conn *net.Conn) (hc *Conn, e error) {
@@ -323,7 +323,7 @@ func (r randReader) Read(b []byte) (n int, e error) {
 }
 
 func NewHopeDialSetup(c io.ReadWriter, hc *Conn) (err error) {
-	// Send hkexnet.Conn parameters to remote side
+	// Send xsnet.Conn parameters to remote side
 
 	// Alice, step 1: Generate a key pair.
 	r := new(randReader)
@@ -368,7 +368,7 @@ func NewHopeDialSetup(c io.ReadWriter, hc *Conn) (err error) {
 }
 
 func NewHopeSimpleDialSetup(c io.ReadWriter, hc *Conn) (err error) {
-	// Send hkexnet.Conn parameters to remote side
+	// Send xsnet.Conn parameters to remote side
 
 	// Alice, step 1: Generate a key pair.
 	r := new(randReader)
@@ -412,7 +412,7 @@ func NewHopeSimpleDialSetup(c io.ReadWriter, hc *Conn) (err error) {
 }
 
 func KyberDialSetup(c io.ReadWriter /*net.Conn*/, hc *Conn) (err error) {
-	// Send hkexnet.Conn parameters to remote side
+	// Send xsnet.Conn parameters to remote side
 
 	// Alice, step 1: Generate a key pair.
 	r := new(randReader)
@@ -477,7 +477,7 @@ func HKExDialSetup(c io.ReadWriter /*net.Conn*/, hc *Conn) (err error) {
 		h = hkex.New(256, 64)
 	}
 
-	// Send hkexnet.Conn parameters to remote side
+	// Send xsnet.Conn parameters to remote side
 	// d is value for Herradura key exchange
 	fmt.Fprintf(c, "0x%s\n0x%x:0x%x\n", h.D().Text(16),
 		hc.cipheropts, hc.opts)
@@ -647,7 +647,7 @@ func HKExAcceptSetup(c *net.Conn, hc *Conn) (err error) {
 		h = hkex.New(256, 64)
 	}
 
-	// Read in hkexnet.Conn parameters over raw Conn c
+	// Read in xsnet.Conn parameters over raw Conn c
 	// d is value for Herradura key exchange
 	d := big.NewInt(0)
 	_, err = fmt.Fscanln(*c, d)
@@ -686,7 +686,7 @@ func HKExAcceptSetup(c *net.Conn, hc *Conn) (err error) {
 //
 //   "H_SHA256" | "H_SHA512" | ...
 //
-// See go doc -u hkexnet.applyConnExtensions
+// See go doc -u xsnet.applyConnExtensions
 func Dial(protocol string, ipport string, extensions ...string) (hc Conn, err error) {
 	if Log == nil {
 		Init(false, "client", logger.LOG_DAEMON|logger.LOG_DEBUG)
@@ -705,7 +705,7 @@ func Dial(protocol string, ipport string, extensions ...string) (hc Conn, err er
 			return Conn{}, err
 		}
 	}
-	// Init hkexnet.Conn hc over net.Conn c
+	// Init xsnet.Conn hc over net.Conn c