GUAC-654: Implement simple telnet client. No screen resize yet.
This commit is contained in:
parent
7c08593b83
commit
a7d1dde24f
@ -30,6 +30,7 @@ DIST_SUBDIRS = \
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src/guacd \
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src/protocols/rdp \
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src/protocols/ssh \
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src/protocols/telnet \
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src/protocols/vnc \
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tests
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@ -51,6 +52,10 @@ if ENABLE_SSH
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SUBDIRS += src/protocols/ssh
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endif
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if ENABLE_TELNET
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SUBDIRS += src/protocols/telnet
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endif
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if ENABLE_VNC
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SUBDIRS += src/protocols/vnc
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endif
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27
configure.ac
27
configure.ac
@ -609,6 +609,23 @@ AM_CONDITIONAL([ENABLE_SSH_AGENT],
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[test "x${have_ssh_agent}" = "xyes" \
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-a "x${enable_ssh_agent}" = "xyes"])
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#
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# libtelnet
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#
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have_libtelnet=yes
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SSH_LIBS=
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AC_CHECK_LIB([telnet], [telnet_init],
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[TELNET_LIBS="$TELNET_LIBS -ltelnet"],
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[have_libtelnet=no])
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AM_CONDITIONAL([ENABLE_TELNET], [test "x${have_libtelnet}" = "xyes" \
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-a "x${have_terminal}" = "xyes" \
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-a "x${have_ssl}" = "xyes"])
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AC_SUBST(TELNET_LIBS)
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AC_CONFIG_FILES([Makefile
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tests/Makefile
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src/common/Makefile
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@ -617,12 +634,14 @@ AC_CONFIG_FILES([Makefile
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src/guacd/Makefile
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src/protocols/rdp/Makefile
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src/protocols/ssh/Makefile
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src/protocols/telnet/Makefile
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src/protocols/vnc/Makefile])
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AC_OUTPUT
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AM_COND_IF([ENABLE_RDP], [build_rdp=yes], [build_rdp=no])
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AM_COND_IF([ENABLE_SSH], [build_ssh=yes], [build_ssh=no])
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AM_COND_IF([ENABLE_VNC], [build_vnc=yes], [build_vnc=no])
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AM_COND_IF([ENABLE_RDP], [build_rdp=yes], [build_rdp=no])
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AM_COND_IF([ENABLE_SSH], [build_ssh=yes], [build_ssh=no])
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AM_COND_IF([ENABLE_TELNET], [build_telnet=yes], [build_telnet=no])
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AM_COND_IF([ENABLE_VNC], [build_vnc=yes], [build_vnc=no])
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AM_COND_IF([ENABLE_INIT], [build_init="${init_dir}"], [build_init=no])
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@ -637,6 +656,7 @@ $PACKAGE_NAME version $PACKAGE_VERSION
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pango ............... ${have_pango}
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libssh2 ............. ${have_libssh2}
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libssl .............. ${have_ssl}
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libtelnet ........... ${have_libtelnet}
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libVNCServer ........ ${have_libvncserver}
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libvorbis ........... ${have_vorbis}
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libpulse ............ ${have_pulse}
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@ -645,6 +665,7 @@ $PACKAGE_NAME version $PACKAGE_VERSION
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RDP ....... ${build_rdp}
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SSH ....... ${build_ssh}
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Telnet .... ${build_telnet}
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VNC ....... ${build_vnc}
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Init scripts: ${build_init}
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36
src/protocols/telnet/.gitignore
vendored
Normal file
36
src/protocols/telnet/.gitignore
vendored
Normal file
@ -0,0 +1,36 @@
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# Object code
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*.o
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*.so
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*.lo
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*.la
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# Backup files
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*~
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# Release files
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*.tar.gz
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# Files currently being edited by vim or vi
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*.swp
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# automake/autoconf
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.deps/
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.libs/
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Makefile
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Makefile.in
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aclocal.m4
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autom4te.cache/
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m4/*
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!README
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config.guess
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config.log
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config.status
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config.sub
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configure
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depcomp
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install-sh
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libtool
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ltmain.sh
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missing
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44
src/protocols/telnet/Makefile.am
Normal file
44
src/protocols/telnet/Makefile.am
Normal file
@ -0,0 +1,44 @@
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#
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# Copyright (C) 2014 Glyptodon LLC
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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AUTOMAKE_OPTIONS = foreign
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ACLOCAL_AMFLAGS = -I m4
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lib_LTLIBRARIES = libguac-client-telnet.la
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libguac_client_telnet_la_SOURCES = \
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client.c \
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clipboard.c \
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guac_handlers.c \
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telnet_client.c
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noinst_HEADERS = \
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client.h \
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clipboard.h \
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guac_handlers.h \
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telnet_client.h
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libguac_client_telnet_la_CFLAGS = -Werror -Wall -Iinclude @LIBGUAC_INCLUDE@ @TERMINAL_INCLUDE@
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libguac_client_telnet_la_LIBADD = @LIBGUAC_LTLIB@ @TERMINAL_LTLIB@
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libguac_client_telnet_la_LDFLAGS = -version-info 0:0:0 @TELNET_LIBS@ @PTHREAD_LIBS@
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150
src/protocols/telnet/client.c
Normal file
150
src/protocols/telnet/client.c
Normal file
@ -0,0 +1,150 @@
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/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "client.h"
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#include "clipboard.h"
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#include "guac_handlers.h"
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#include "telnet_client.h"
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#include "terminal.h"
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <guacamole/client.h>
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#include <guacamole/protocol.h>
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#include <guacamole/socket.h>
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#define GUAC_TELNET_DEFAULT_FONT_NAME "monospace"
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#define GUAC_TELNET_DEFAULT_FONT_SIZE 12
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#define GUAC_TELNET_DEFAULT_PORT "23"
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/* Client plugin arguments */
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const char* GUAC_CLIENT_ARGS[] = {
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"hostname",
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"port",
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"font-name",
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"font-size",
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NULL
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};
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enum __TELNET_ARGS_IDX {
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/**
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* The hostname to connect to. Required.
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*/
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IDX_HOSTNAME,
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/**
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* The port to connect to. Optional.
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*/
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IDX_PORT,
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/**
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* The name of the font to use within the terminal.
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*/
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IDX_FONT_NAME,
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/**
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* The size of the font to use within the terminal, in points.
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*/
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IDX_FONT_SIZE,
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TELNET_ARGS_COUNT
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};
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int guac_client_init(guac_client* client, int argc, char** argv) {
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guac_socket* socket = client->socket;
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telnet_client_data* client_data = malloc(sizeof(telnet_client_data));
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/* Init client data */
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client->data = client_data;
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client_data->telnet = NULL;
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client_data->socket_fd = -1;
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if (argc != TELNET_ARGS_COUNT) {
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guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Wrong number of arguments");
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return -1;
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}
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/* Read parameters */
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strcpy(client_data->hostname, argv[IDX_HOSTNAME]);
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/* Read port */
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if (argv[IDX_PORT][0] != 0)
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strcpy(client_data->port, argv[IDX_PORT]);
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else
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strcpy(client_data->port, GUAC_TELNET_DEFAULT_PORT);
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/* Read font name */
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if (argv[IDX_FONT_NAME][0] != 0)
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strcpy(client_data->font_name, argv[IDX_FONT_NAME]);
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else
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strcpy(client_data->font_name, GUAC_TELNET_DEFAULT_FONT_NAME );
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/* Read font size */
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if (argv[IDX_FONT_SIZE][0] != 0)
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client_data->font_size = atoi(argv[IDX_FONT_SIZE]);
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else
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client_data->font_size = GUAC_TELNET_DEFAULT_FONT_SIZE;
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/* Create terminal */
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client_data->term = guac_terminal_create(client,
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client_data->font_name, client_data->font_size,
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client->info.optimal_resolution,
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client->info.optimal_width, client->info.optimal_height);
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/* Fail if terminal init failed */
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if (client_data->term == NULL) {
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guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Terminal initialization failed");
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return -1;
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}
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/* Send initial name */
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guac_protocol_send_name(socket, client_data->hostname);
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guac_socket_flush(socket);
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/* Set basic handlers */
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client->handle_messages = telnet_guac_client_handle_messages;
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client->key_handler = telnet_guac_client_key_handler;
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client->mouse_handler = telnet_guac_client_mouse_handler;
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client->size_handler = telnet_guac_client_size_handler;
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client->free_handler = telnet_guac_client_free_handler;
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client->clipboard_handler = guac_telnet_clipboard_handler;
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/* Start client thread */
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if (pthread_create(&(client_data->client_thread), NULL, telnet_client_thread, (void*) client)) {
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guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to start telnet client thread");
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return -1;
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}
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/* Success */
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return 0;
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}
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83
src/protocols/telnet/client.h
Normal file
83
src/protocols/telnet/client.h
Normal file
@ -0,0 +1,83 @@
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/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
|
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
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||||
*
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||||
* The above copyright notice and this permission notice shall be included in
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||||
* all copies or substantial portions of the Software.
|
||||
*
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||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef _TELNET_GUAC_CLIENT_H
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#define _TELNET_GUAC_CLIENT_H
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#include "config.h"
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#include "terminal.h"
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#include <pthread.h>
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#include <libtelnet.h>
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/**
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* Telnet-specific client data.
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*/
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typedef struct telnet_client_data {
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/**
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* The hostname of the telnet server to connect to.
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*/
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char hostname[1024];
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/**
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* The port of the telnet server to connect to.
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*/
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char port[64];
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/**
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* The name of the font to use for display rendering.
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*/
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char font_name[1024];
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/**
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* The size of the font to use, in points.
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*/
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int font_size;
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/**
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* The telnet client thread.
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*/
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pthread_t client_thread;
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/**
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* The file descriptor of the socket connected to the telnet server,
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* or -1 if no connection has been established.
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*/
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int socket_fd;
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/**
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* Telnet connection, used by the telnet client thread.
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*/
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telnet_t* telnet;
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/**
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* The terminal which will render all output from the telnet client.
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*/
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guac_terminal* term;
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} telnet_client_data;
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#endif
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57
src/protocols/telnet/clipboard.c
Normal file
57
src/protocols/telnet/clipboard.c
Normal file
@ -0,0 +1,57 @@
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/*
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* Copyright (C) 2014 Glyptodon LLC
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||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
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#include "config.h"
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#include "client.h"
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#include "clipboard.h"
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int guac_telnet_clipboard_handler(guac_client* client, guac_stream* stream,
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char* mimetype) {
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/* Clear clipboard and prepare for new data */
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telnet_client_data* client_data = (telnet_client_data*) client->data;
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guac_terminal_clipboard_reset(client_data->term, mimetype);
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/* Set handlers for clipboard stream */
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stream->blob_handler = guac_telnet_clipboard_blob_handler;
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stream->end_handler = guac_telnet_clipboard_end_handler;
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return 0;
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}
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int guac_telnet_clipboard_blob_handler(guac_client* client, guac_stream* stream,
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void* data, int length) {
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/* Append new data */
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telnet_client_data* client_data = (telnet_client_data*) client->data;
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guac_terminal_clipboard_append(client_data->term, data, length);
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return 0;
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}
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int guac_telnet_clipboard_end_handler(guac_client* client, guac_stream* stream) {
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/* Nothing to do - clipboard is implemented within client */
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return 0;
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}
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|
49
src/protocols/telnet/clipboard.h
Normal file
49
src/protocols/telnet/clipboard.h
Normal file
@ -0,0 +1,49 @@
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/*
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* Copyright (C) 2014 Glyptodon LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef _GUAC_TELNET_CLIPBOARD_H
|
||||
#define _GUAC_TELNET_CLIPBOARD_H
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include <guacamole/client.h>
|
||||
#include <guacamole/stream.h>
|
||||
|
||||
/**
|
||||
* Handler for inbound clipboard data.
|
||||
*/
|
||||
int guac_telnet_clipboard_handler(guac_client* client, guac_stream* stream,
|
||||
char* mimetype);
|
||||
|
||||
/**
|
||||
* Handler for stream data related to clipboard.
|
||||
*/
|
||||
int guac_telnet_clipboard_blob_handler(guac_client* client, guac_stream* stream,
|
||||
void* data, int length);
|
||||
|
||||
/**
|
||||
* Handler for end-of-stream related to clipboard.
|
||||
*/
|
||||
int guac_telnet_clipboard_end_handler(guac_client* client, guac_stream* stream);
|
||||
|
||||
#endif
|
||||
|
111
src/protocols/telnet/guac_handlers.c
Normal file
111
src/protocols/telnet/guac_handlers.c
Normal file
@ -0,0 +1,111 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Glyptodon LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include "client.h"
|
||||
#include "guac_handlers.h"
|
||||
#include "terminal.h"
|
||||
|
||||
#include <fcntl.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
#include <cairo/cairo.h>
|
||||
#include <guacamole/socket.h>
|
||||
#include <guacamole/protocol.h>
|
||||
#include <guacamole/client.h>
|
||||
#include <libtelnet.h>
|
||||
#include <pango/pangocairo.h>
|
||||
|
||||
int telnet_guac_client_handle_messages(guac_client* client) {
|
||||
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
return guac_terminal_render_frame(client_data->term);
|
||||
|
||||
}
|
||||
|
||||
int telnet_guac_client_mouse_handler(guac_client* client, int x, int y, int mask) {
|
||||
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
guac_terminal* term = client_data->term;
|
||||
|
||||
/* Send mouse event */
|
||||
guac_terminal_send_mouse(term, x, y, mask);
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int telnet_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
|
||||
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
guac_terminal* term = client_data->term;
|
||||
|
||||
/* Send key */
|
||||
guac_terminal_send_key(term, keysym, pressed);
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int telnet_guac_client_size_handler(guac_client* client, int width, int height) {
|
||||
|
||||
/* STUB */
|
||||
|
||||
#if 0
|
||||
/* Get terminal */
|
||||
telnet_client_data* guac_client_data = (telnet_client_data*) client->data;
|
||||
guac_terminal* terminal = guac_client_data->term;
|
||||
|
||||
/* Resize terminal */
|
||||
guac_terminal_resize(terminal, width, height);
|
||||
|
||||
/* Update SSH pty size if connected */
|
||||
if (guac_client_data->term_channel != NULL)
|
||||
libssh2_channel_request_pty_size(guac_client_data->term_channel,
|
||||
terminal->term_width, terminal->term_height);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int telnet_guac_client_free_handler(guac_client* client) {
|
||||
|
||||
telnet_client_data* guac_client_data = (telnet_client_data*) client->data;
|
||||
|
||||
/* Close telnet connection */
|
||||
if (guac_client_data->socket_fd != -1)
|
||||
close(guac_client_data->socket_fd);
|
||||
|
||||
/* Wait for and free telnet session, if connected */
|
||||
if (guac_client_data->telnet != NULL) {
|
||||
pthread_join(guac_client_data->client_thread, NULL);
|
||||
telnet_free(guac_client_data->telnet);
|
||||
}
|
||||
|
||||
guac_terminal_free(guac_client_data->term);
|
||||
free(client->data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
38
src/protocols/telnet/guac_handlers.h
Normal file
38
src/protocols/telnet/guac_handlers.h
Normal file
@ -0,0 +1,38 @@
|
||||
/*
|
||||
* Copyright (C) 2014 Glyptodon LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef _TELNET_GUAC_HANDLERS_H
|
||||
#define _TELNET_GUAC_HANDLERS_H
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include <guacamole/client.h>
|
||||
|
||||
int telnet_guac_client_handle_messages(guac_client* client);
|
||||
int telnet_guac_client_key_handler(guac_client* client, int keysym, int pressed);
|
||||
int telnet_guac_client_mouse_handler(guac_client* client, int x, int y, int mask);
|
||||
int telnet_guac_client_size_handler(guac_client* client, int width, int height);
|
||||
int telnet_guac_client_free_handler(guac_client* client);
|
||||
|
||||
#endif
|
||||
|
258
src/protocols/telnet/telnet_client.c
Normal file
258
src/protocols/telnet/telnet_client.c
Normal file
@ -0,0 +1,258 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Glyptodon LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include "client.h"
|
||||
#include "guac_handlers.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <netdb.h>
|
||||
#include <netinet/in.h>
|
||||
#include <pthread.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/types.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <libtelnet.h>
|
||||
#include <guacamole/client.h>
|
||||
#include <guacamole/protocol.h>
|
||||
#include <guacamole/socket.h>
|
||||
|
||||
static const telnet_telopt_t __telnet_options[] = {
|
||||
{ TELNET_TELOPT_ECHO, TELNET_WONT, TELNET_DONT },
|
||||
{ TELNET_TELOPT_TTYPE, TELNET_WILL, TELNET_DONT },
|
||||
{ TELNET_TELOPT_COMPRESS2, TELNET_WONT, TELNET_DO },
|
||||
{ TELNET_TELOPT_MSSP, TELNET_WONT, TELNET_DO },
|
||||
{ -1, 0, 0 }
|
||||
};
|
||||
|
||||
static int __write_all(int fd, const char* buffer, int size) {
|
||||
|
||||
int remaining = size;
|
||||
while (remaining > 0) {
|
||||
|
||||
/* Attempt to write data */
|
||||
int ret_val = write(fd, buffer, remaining);
|
||||
if (ret_val <= 0)
|
||||
return -1;
|
||||
|
||||
/* If successful, contine with what data remains (if any) */
|
||||
remaining -= ret_val;
|
||||
buffer += ret_val;
|
||||
|
||||
}
|
||||
|
||||
return size;
|
||||
|
||||
}
|
||||
|
||||
static void __guac_telnet_event_handler(telnet_t* telnet, telnet_event_t* event, void* data) {
|
||||
|
||||
guac_client* client = (guac_client*) data;
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
|
||||
switch (event->type) {
|
||||
|
||||
/* User input received */
|
||||
case TELNET_EV_DATA:
|
||||
guac_terminal_write_stdout(client_data->term, event->data.buffer, event->data.size);
|
||||
break;
|
||||
|
||||
/* Data destined for remote end */
|
||||
case TELNET_EV_SEND:
|
||||
if (__write_all(client_data->socket_fd, event->data.buffer, event->data.size) != event->data.size)
|
||||
guac_client_stop(client);
|
||||
break;
|
||||
|
||||
/* Terminal type request */
|
||||
case TELNET_EV_TTYPE:
|
||||
if (event->ttype.cmd == TELNET_TTYPE_SEND)
|
||||
telnet_ttype_is(client_data->telnet, "linux");
|
||||
break;
|
||||
|
||||
/* Connection warnings */
|
||||
case TELNET_EV_WARNING:
|
||||
guac_client_log_info(client, "%s", event->error.msg);
|
||||
break;
|
||||
|
||||
/* Connection errors */
|
||||
case TELNET_EV_ERROR:
|
||||
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR,
|
||||
"Telnet connection closing with error: %s", event->error.msg);
|
||||
break;
|
||||
|
||||
/* Ignore other events */
|
||||
default:
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void* telnet_input_thread(void* data) {
|
||||
|
||||
guac_client* client = (guac_client*) data;
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
|
||||
char buffer[8192];
|
||||
int bytes_read;
|
||||
|
||||
/* Write all data read */
|
||||
while ((bytes_read = guac_terminal_read_stdin(client_data->term, buffer, sizeof(buffer))) > 0)
|
||||
telnet_send(client_data->telnet, buffer, bytes_read);
|
||||
|
||||
return NULL;
|
||||
|
||||
}
|
||||
|
||||
static telnet_t* __guac_telnet_create_session(guac_client* client) {
|
||||
|
||||
int retval;
|
||||
|
||||
int fd;
|
||||
struct addrinfo* addresses;
|
||||
struct addrinfo* current_address;
|
||||
|
||||
char connected_address[1024];
|
||||
char connected_port[64];
|
||||
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
|
||||
struct addrinfo hints = {
|
||||
.ai_family = AF_UNSPEC,
|
||||
.ai_socktype = SOCK_STREAM,
|
||||
.ai_protocol = IPPROTO_TCP
|
||||
};
|
||||
|
||||
/* Get socket */
|
||||
fd = socket(AF_INET, SOCK_STREAM, 0);
|
||||
|
||||
/* Get addresses connection */
|
||||
if ((retval = getaddrinfo(client_data->hostname, client_data->port,
|
||||
&hints, &addresses))) {
|
||||
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Error parsing given address or port: %s",
|
||||
gai_strerror(retval));
|
||||
return NULL;
|
||||
|
||||
}
|
||||
|
||||
/* Attempt connection to each address until success */
|
||||
current_address = addresses;
|
||||
while (current_address != NULL) {
|
||||
|
||||
int retval;
|
||||
|
||||
/* Resolve hostname */
|
||||
if ((retval = getnameinfo(current_address->ai_addr,
|
||||
current_address->ai_addrlen,
|
||||
connected_address, sizeof(connected_address),
|
||||
connected_port, sizeof(connected_port),
|
||||
NI_NUMERICHOST | NI_NUMERICSERV)))
|
||||
guac_client_log_info(client, "Unable to resolve host: %s", gai_strerror(retval));
|
||||
|
||||
/* Connect */
|
||||
if (connect(fd, current_address->ai_addr,
|
||||
current_address->ai_addrlen) == 0) {
|
||||
|
||||
guac_client_log_info(client, "Successfully connected to "
|
||||
"host %s, port %s", connected_address, connected_port);
|
||||
|
||||
/* Done if successful connect */
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
/* Otherwise log information regarding bind failure */
|
||||
else
|
||||
guac_client_log_info(client, "Unable to connect to "
|
||||
"host %s, port %s: %s",
|
||||
connected_address, connected_port, strerror(errno));
|
||||
|
||||
current_address = current_address->ai_next;
|
||||
|
||||
}
|
||||
|
||||
/* If unable to connect to anything, fail */
|
||||
if (current_address == NULL) {
|
||||
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR, "Unable to connect to any addresses.");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Free addrinfo */
|
||||
freeaddrinfo(addresses);
|
||||
|
||||
/* Open telnet session */
|
||||
telnet_t* telnet = telnet_init(__telnet_options, __guac_telnet_event_handler, 0, client);
|
||||
if (telnet == NULL) {
|
||||
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Telnet client allocation failed.");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Save file descriptor */
|
||||
client_data->socket_fd = fd;
|
||||
|
||||
return telnet;
|
||||
|
||||
}
|
||||
|
||||
void* telnet_client_thread(void* data) {
|
||||
|
||||
guac_client* client = (guac_client*) data;
|
||||
telnet_client_data* client_data = (telnet_client_data*) client->data;
|
||||
|
||||
pthread_t input_thread;
|
||||
char buffer[8192];
|
||||
int bytes_read;
|
||||
|
||||
/* Open telnet session */
|
||||
client_data->telnet = __guac_telnet_create_session(client);
|
||||
if (client_data->telnet == NULL) {
|
||||
/* Already aborted within __guac_telnet_create_session() */
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Logged in */
|
||||
guac_client_log_info(client, "Telnet connection successful.");
|
||||
|
||||
/* Start input thread */
|
||||
if (pthread_create(&(input_thread), NULL, telnet_input_thread, (void*) client)) {
|
||||
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to start input thread");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* While data available, write to terminal */
|
||||
while ((bytes_read = read(client_data->socket_fd, buffer, sizeof(buffer))) > 0)
|
||||
telnet_recv(client_data->telnet, buffer, bytes_read);
|
||||
|
||||
/* Kill client and Wait for input thread to die */
|
||||
guac_client_stop(client);
|
||||
pthread_join(input_thread, NULL);
|
||||
|
||||
guac_client_log_info(client, "Telnet connection ended.");
|
||||
return NULL;
|
||||
|
||||
}
|
||||
|
37
src/protocols/telnet/telnet_client.h
Normal file
37
src/protocols/telnet/telnet_client.h
Normal file
@ -0,0 +1,37 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Glyptodon LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef __TELNET_CLIENT_H
|
||||
#define __TELNET_CLIENT_H
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include <guacamole/client.h>
|
||||
|
||||
/**
|
||||
* Main telnet client thread, handling transfer of telnet output to STDOUT.
|
||||
*/
|
||||
void* telnet_client_thread(void* data);
|
||||
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user