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

Browse Source 
Signed-off-by: Russ Magee <rmagee@gmail.com>
remotes/origin/sys-passwd
Russ Magee 3 years ago
parent 423410bb40
commit b19687c80b
41 changed files with 1101 additions and 813 deletions
Show Stats Download Patch File Download Diff File

2
LICENSE.mit
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@ -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

46
Makefile
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@ -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

68
README.md
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@ -1,19 +1,19 @@
[![GoDoc](https://godoc.org/blitter.com/go/hkexsh?status.svg)](https://godoc.org/blitter.com/go/hkexsh)
[![GoDoc](https://godoc.org/blitter.com/go/xs?status.svg)](https://godoc.org/blitter.com/go/xs)
# HKExSh
# XS
--
HKExSh (**H**erradura**K**yber**Ex** **Sh**ell) is a golang implementation of a simple
remote shell client and server, similar in role to ssh, offering
encrypted interactive and non-interactive sessions, file copying and tunnels with traffic obfuscation ('chaffing').
XS (**X**perimental **S**hell) is a golang implementation of a simple remote shell client and
server, similar in role to ssh, offering encrypted interactive and non-interactive sessions,
file copying and tunnels with traffic obfuscation ('chaffing').
***
**NOTE: Due to the experimental nature of the KEX/KEM algorithms used, and the novelty of the overall codebase, this package SHOULD BE CONSIDERED EXTREMELY EXPERIMENTAL and USED WITH CAUTION. It DEFINITELY SHOULD NOT be used for any sensitive applications. USE AT YOUR OWN RISK. NEITHER WARRANTY NOR CLAIM OF FITNESS FOR PURPOSE IS EXPRESSED OR IMPLIED.**
***
The client and server programs (hkexsh and hkexshd) use a mostly drop-in
The client and server programs (xs and xsd) use a mostly drop-in
replacement for golang's standard golang/pkg/net facilities (net.Dial(), net.Listen(), net.Accept()
and the net.Conn type), which automatically negotiate keying material for
secure sockets using one of a selectable set of experimental key exchange (KEX) or
@ -42,10 +42,10 @@ Currently supported session algorithms:
### Conn
Calls to hkexnet.Dial() and hkexnet.Listen()/Accept() are generally the same as calls to the equivalents within the _net_ package; however upon connection a key exchange automatically occurs whereby client and server independently derive the same keying material, and all following traffic is secured by a symmetric encryption algorithm.
Calls to xsnet.Dial() and xsnet.Listen()/Accept() are generally the same as calls to the equivalents within the _net_ package; however upon connection a key exchange automatically occurs whereby client and server independently derive the same keying material, and all following traffic is secured by a symmetric encryption algorithm.
### Session Negotiation
Above the hkexnet.Conn layer, the server and client apps in this repository (hkexshd/ and hkexsh/ respectively) negotiate session settings (cipher/hmac algorithms, interactive/non-interactive mode, tunnel specifiers, etc.) to be used for communication.
Above the xsnet.Conn layer, the server and client apps in this repository (xsd/ and xs/ respectively) negotiate session settings (cipher/hmac algorithms, interactive/non-interactive mode, tunnel specifiers, etc.) to be used for communication.
### Padding and Chaffing
Packets are subject to padding (random size, randomly applied as prefix or postfix), and optionally the client and server channels can both send _chaff_ packets at random defineable intervals to help thwart analysis of session activity (applicable to interactive and non-interactive command sessions, file copies and tunnels).
@ -54,7 +54,7 @@ Packets are subject to padding (random size, randomly applied as prefix or postf
Chaffing and tunnels, if specified, are set up during initial client->server connection. Packets from the client local port(s) are sent through the main secured connection to the server's remote port(s), and vice versa, tagged with a chaff or tunnel specifier so that they can be discarded as chaff or de-multiplexed and delivered to the proper tunnel endpoints, respectively.
### Accounts and Passwords
Within the hkexpasswd/ directory is a password-setting utility. HKExSh uses its own password file distinct from the system /etc/passwd to authenticate clients, using standard bcrypt+salt storage. This is currently done to allow alternate login credentials via hkexsh vs. console/ssh login, due to the experimental nature of the program. At some point in the future an option to use the system's /etc/passwd and /etc/shadow may be implemented, making the use of the auxilliary hkexpasswd utility optional or obsolete.
Within the xspasswd/ directory is a password-setting utility. XS uses its own password file distinct from the system /etc/passwd to authenticate clients, using standard bcrypt+salt storage. This is currently done to allow alternate login credentials via xs vs. console/ssh login, due to the experimental nature of the program. At some point in the future an option to use the system's /etc/passwd and /etc/shadow may be implemented, making the use of the auxilliary xspasswd utility optional or obsolete.
HERRADURA KEX
@ -85,8 +85,8 @@ As of this time (Oct 2018) Kyber is one of the candidate algorithms submitted to
### Get source code
```
$ go get -u blitter.com/go/hkexsh
$ cd $GOPATH/src/blitter.com/go/hkexsh
$ go get -u blitter.com/go/xs
$ cd $GOPATH/src/blitter.com/go/xs
$ go build ./... # install all dependent go pkgs
```
@ -94,7 +94,7 @@ $ go build ./... # install all dependent go pkgs
### To build
```
$ cd $GOPATH/src/blitter.com/go/hkexsh
$ cd $GOPATH/src/blitter.com/go/xs
$ make clean all
```
@ -106,24 +106,24 @@ $ sudo make [install | uninstall | reinstall]
### To manage service (assuming openrc init)
An example init script (hkexshd.initrc) is provided. Consult your Linux distribution documentation for proper service/daemon installation. For openrc,
An example init script (xsd.initrc) is provided. Consult your Linux distribution documentation for proper service/daemon installation. For openrc,
```
$ sudo cp hkexshd.initrc /etc/init.d/hkexshd
$ sudo rc-config add hkexshd default
$ sudo cp xsd.initrc /etc/init.d/xsd
$ sudo rc-config add xsd default
```
The make system assumes installation in /usr/local/sbin (hkexshd, hkexpasswd) and /usr/local/bin (hkexsh/hkexcp symlink).
The make system assumes installation in /usr/local/sbin (xsd, xspasswd) and /usr/local/bin (xs/xc symlink).
```
$ sudo rc-config [start | restart | stop] hkexshd
$ sudo rc-config [start | restart | stop] xsd
```
### To set accounts & passwords:
```
$ sudo touch /etc/hkexsh.passwd
$ sudo hkexpasswd/hkexpasswd -u joebloggs
$ sudo touch /etc/xs.passwd
$ sudo xspasswd/xspasswd -u joebloggs
$ <enter a password, enter again to confirm>
```
@ -131,36 +131,36 @@ $ <enter a password, enter again to confirm>
In separate shells A and B:
```
[A]$ cd hkexshd && sudo ./hkexshd & # add -d for debugging
[A]$ cd xsd && sudo ./xsd & # add -d for debugging
```
Interactive shell
```
[B]$ cd hkexsh && ./hkexsh joebloggs@host-or-ip # add -d for debugging
[B]$ cd xs && ./xs joebloggs@host-or-ip # add -d for debugging
```
One-shot command
```
[B]$ cd hkexsh && ./hkexsh -x "ls /tmp" joebloggs@host-or-ip
[B]$ cd xs && ./xs -x "ls /tmp" joebloggs@host-or-ip
```
WARNING WARNING WARNING: the -d debug flag will echo passwords to the log/console!
Logging on Linux usually goes to /var/log/syslog and/or /var/log/debug, /var/log/daemon.log.
NOTE if running client (hkexsh) with -d, one will likely need to run 'reset' afterwards
NOTE if running client (xs) with -d, one will likely need to run 'reset' afterwards
to fix up the shell tty afterwards, as stty echo may not be restored if client crashes
or is interrupted.
### Setting up an 'authtoken' for scripted (password-free) logins
Use the -g option of hkexsh to request a token from the remote server, which will return a
hostname:token string. Place this string into $HOME/.hkexsh_id to allow logins without
entering a password (obviously, $HOME/.hkexsh_id on both server and client for the user
Use the -g option of xs to request a token from the remote server, which will return a
hostname:token string. Place this string into $HOME/.xs_id to allow logins without
entering a password (obviously, $HOME/.xs_id on both server and client for the user
should *not* be world-readable.)
### File Copying using hkexcp
### File Copying using xc
hkexcp is a symlink to hkexsh, and the binary checks its own filename to determine whether
xc is a symlink to xs, and the binary checks its own filename to determine whether
it is being invoked in 'shell' or 'copy' mode. Refer to the '-h' output for differences in
accepted options.
@ -171,15 +171,15 @@ as expected.
Local (client) to remote (server) copy:
```
$ hkexcp fileA /some/where/fileB /some/where/else/dirC joebloggs@host-or-ip:remoteDir
$ xc fileA /some/where/fileB /some/where/else/dirC joebloggs@host-or-ip:remoteDir
```
Remote (server) to local (client) copy:
```
$ hkexcp joebloggs@host-or-ip:/remoteDirOrFile /some/where/local/Dir
$ xc joebloggs@host-or-ip:/remoteDirOrFile /some/where/local/Dir
```
hkexcp uses a 'tarpipe' to send file data over the encrypted channel. Use the -d flag on client or server to see the generated tar commands if you're curious.
xc uses a 'tarpipe' to send file data over the encrypted channel. Use the -d flag on client or server to see the generated tar commands if you're curious.
NOTE: Renaming while copying (eg., 'cp /foo/bar/fileA ./fileB') is NOT supported. Put another way, the destination (whether local or remote) must ALWAYS be a directory.
@ -187,12 +187,12 @@ NOTE: Renaming while copying (eg., 'cp /foo/bar/fileA ./fileB') is NOT supported
Simple tunnels (client -> server, no reverse tunnels for now) are supported.
Syntax: hkexsh -T=&lt;tunspec&gt;{,&lt;tunspec&gt;...}
Syntax: xs -T=&lt;tunspec&gt;{,&lt;tunspec&gt;...}
.. where &lt;tunspec&gt; is &lt;localport:remoteport&gt;
Example, tunnelling ssh through hkexsh
Example, tunnelling ssh through xs
* [server side] ```$ sudo /usr/sbin/sshd -p 7002```
* [client side, term A] ```$ hkexsh -T=6002:7002 user@server```
* [client side, term A] ```$ xs -T=6002:7002 user@server```
* [client side, term B] ```$ ssh user@localhost -p 6002```

14
hkexauth.go → auth.go
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@ -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
}

8
consts.go
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@ -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)

2
go.mod
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@ -1,4 +1,4 @@
module blitter.com/go/hkexsh
module blitter.com/go/xs
go 1.12

4
grml.yaml
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@ -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

63
hkexpasswd/hkexpasswd-vis.gv
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@ -1,63 +0,0 @@
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1
hkexsh/hkexcp
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@ -1 +0,0 @@
hkexsh

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hkexsh/hkexsh-vis.gv
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@ -1,263 +0,0 @@
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"(blitter.com/go/hkexsh.Session).AuthCookie" [ fillcolor="moccasin" label="AuthCookie" penwidth="1.5" ]
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"(*blitter.com/go/hkexsh/hkexnet.Conn).EnableChaff" [ fillcolor="moccasin" label="EnableChaff" penwidth="1.5" ]
"(*blitter.com/go/hkexsh/hkexnet.Conn).DisableChaff" [ fillcolor="moccasin" label="DisableChaff" penwidth="1.5" ]
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"(blitter.com/go/hkexsh/hkexnet.Conn).Read" [ fillcolor="moccasin" label="Read" penwidth="1.5" ]
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"(*blitter.com/go/hkexsh/hkexnet.HKExListener).Accept" [ fillcolor="moccasin" label="Accept" penwidth="1.5" ]
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penwidth="0.5";
fontsize="15";
"(blitter.com/go/hkexsh/hkexnet.Conn).Write" [ label="Write" penwidth="1.5" fillcolor="moccasin" ]
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penwidth="0.5";
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style="rounded,filled";
"(blitter.com/go/hkexsh/hkexnet.HKExListener).Close" [ fillcolor="moccasin" label="Close" penwidth="1.5" ]
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rank="sink";
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label="[logger]";
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"blitter.com/go/hkexsh/logger.LogErr" [ fillcolor="moccasin" label="LogErr" penwidth="1.5" ]
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"blitter.com/go/hkexsh/hkexshd.main$2$1" -> "blitter.com/go/goutmp.Unput_utmp" [ color="saddlebrown" ]
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"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" ]
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"blitter.com/go/hkexsh/hkexshd.main" -> "blitter.com/go/hkexsh/hkexnet.Listen" [ color="saddlebrown" ]
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"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" ]
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"blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/hkexsh/hkexshd.runShellAs" [ ]
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"blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/goutmp.Put_utmp" [ color="saddlebrown" ]
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"blitter.com/go/hkexsh/hkexshd.main$2" -> "blitter.com/go/goutmp.Put_lastlog_entry" [ color="saddlebrown" ]
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"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" ]
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"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" ]
}

8
hkexsession.go → session.go
Unescape View File

@ -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)
}

4
termmode_unix.go
Unescape View File

@ -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.)
* ------------- */

4
termmode_windows.go
Unescape View File

@ -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"

0
viz_hkexsh_dot.png → viz_xs_dot.png
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Before

Width:  |  Height:  |  Size: 675 KiB

After

Width:  |  Height:  |  Size: 675 KiB

4
hkexsh/Makefile → xs/Makefile
Unescape View File

@ -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

0
hkexsh/mintty_wrapper.sh → xs/mintty_wrapper.sh
Unescape View File

6
hkexsh/termsize_linux.go → xs/termsize_linux.go
Unescape View File

@ -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.

6
hkexsh/termsize_windows.go → xs/termsize_windows.go
Unescape View File

@ -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)
}
}
}()

BIN
xs/xs-vis-fixedup.png
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549
xs/xs-vis.gv
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@ -0,0 +1,549 @@
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subgraph "cluster_blitter.com/go/xs/xsnet.Conn" {
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subgraph "cluster_compress/flate.CorruptInputError" {
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subgraph "cluster_compress/flate.InternalError" {
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subgraph "cluster_context" {
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subgraph "cluster_context.deadlineExceededError" {
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subgraph "cluster_crypto/aes" {
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subgraph "cluster_crypto/aes.KeySizeError" {
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subgraph "cluster_crypto/tls" {
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subgraph "cluster_crypto/tls.RecordHeaderError" {
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subgraph "cluster_crypto/tls.alert" {
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subgraph "cluster_crypto/x509" {
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subgraph "cluster_crypto/x509.UnknownAuthorityError" {
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