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# Copyright (C) 2016-2019, 2020 Free Software Foundation, Inc.
#
# This file is part of DejaGnu.
#
# DejaGnu is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# DejaGnu is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with DejaGnu; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
# Connect using ssh(1).
set ssh_initialized "no"
set ssh_useropts " -o ControlPersist=yes -o ControlMaster=auto -o ControlPath=\"/tmp/ssh-%r@%h:%p\""
# Default to the ssh and scp in the user's path.
set SSH ssh
set SCP scp
# Download SRCFILE to DESTFILE on DESTHOST.
#
proc ssh_download {desthost srcfile destfile} {
global SSH SCP ssh_initialized timeout
set ssh_port ""
set ssh_user ""
set ssh_useropts ""
set name ""
set hostname ""
if {[board_info $desthost exists scp_prog]} {
set SCP [board_info $desthost scp_prog]
}
if {[board_info $desthost exists ssh_prog]} {
set SSH [board_info $desthost ssh_prog]
}
# The default user name is the person running the tests
if {[board_info $desthost exists username]} {
set ssh_user "[board_info $desthost username]@"
}
if {[board_info $desthost exists ssh_opts]} {
append ssh_useropts " [board_info $desthost ssh_opts]"
}
# The default SSH port is 22
if {[board_info $desthost exists port]} {
set ssh_port "[board_info $desthost port]"
} else {
set ssh_port 22
}
if {[board_info $desthost exists name]} {
set name [board_info $desthost name]
}
if {[board_info $desthost exists hostname]} {
set hostname [board_info $desthost hostname]
} else {
set hostname $desthost
}
append ssh_useropts " -o ControlPersist=yes -o ControlMaster=auto -o ControlPath=/tmp/ssh-%r@%h:%p"
set ret [local_exec "$SCP -P $ssh_port $ssh_useropts $srcfile $ssh_user$hostname:$destfile" "" "" $timeout]
set status [lindex $ret 0]
set output [lindex $ret 1]
if { $status == 0 } {
set ssh_initialized "yes"
verbose "Copied $srcfile to $desthost:$destfile" 2
return $destfile
} else {
verbose "Download via ssh to $desthost failed."
return ""
}
}
proc ssh_upload {desthost srcfile destfile} {
global SSH SCP
if {[board_info $desthost exists scp_prog]} {
set SCP [board_info $desthost scp_prog]
}
if {[board_info $desthost exists username]} {
set ssh_user "[board_info $desthost username]@"
} else {
set ssh_user ""
}
if {[board_info $desthost exists name]} {
set desthost [board_info $desthost name]
}
if {[board_info $desthost exists hostname]} {
set desthost [board_info $desthost hostname]
}
set status [catch "exec $SCP $ssh_user$desthost:$srcfile $destfile" output]
if { $status == 0 } {
verbose "Copied $desthost:$srcfile to $destfile" 2
return $destfile
} else {
verbose "Upload from $desthost failed, $output."
return ""
}
}
# Execute CMD on BOARDNAME.
#
proc ssh_exec { boardname program pargs inp outp } {
global SSH timeout
set ssh_port ""
set scp_port ""
set ssh_user ""
set ssh_useropts ""
set name ""
set hostname ""
verbose "Executing on $boardname: $program $pargs"
if {![board_info $boardname exists ssh_prog]} {
set SSH ssh
} else {
set SSH [board_info $boardname ssh_prog]
}
if {[board_info $boardname exists username]} {
set ssh_user "[board_info $boardname username]@"
} else {
set ssh_user ""
}
if {[board_info $boardname exists ssh_useropts]} {
append ssh_useropts " [board_info $boardname ssh_opts]"
}
if {[board_info $boardname exists name]} {
set boardname [board_info $boardname name]
}
if {[board_info $boardname exists hostname]} {
set hostname [board_info $boardname hostname]
} else {
set hostname $boardname
}
if {[board_info $boardname exists port]} {
append ssh_useropts " -p [board_info $boardname port]"
}
append ssh_useropts " -o ControlPersist=yes -o ControlMaster=auto -o ControlPath=\"/tmp/ssh-%r@%h:%p\""
# If CMD sends any output to stderr, exec will think it failed.
# More often than not that will be true, but it doesn't catch the
# case where there is no output but the exit code is non-zero.
if { $inp eq "" } {
set inp "/dev/null"
}
# We use && here, as otherwise the echo always works, which makes it look
# like execution succeeded when in reality it failed.
set ret [local_exec "$SSH $ssh_useropts $ssh_user$hostname sh -c '$program $pargs && echo XYZ\\\${?}ZYX \\; rm -f $program'" $inp $outp $timeout]
set status [lindex $ret 0]
set output [lindex $ret 1]
verbose "$SSH status is $status, output is $output"
# `status' doesn't mean much here other than ssh worked ok.
# What we want is whether $program ran ok. Return $status
# if the program timed out, status will be 1 indicating that
# ssh ran and failed. If ssh fails, we will get FAIL rather
# than UNRESOLVED - this will help the problem be noticed.
if { $status != 0 } {
regsub "XYZ(\[0-9\]*)ZYX\n?" $output "" output
return [list $status "$SSH to $boardname failed for $program, $output"]
}
if { [regexp "XYZ(\[0-9\]*)ZYX" $output junk status] == 0 } {
set status ""
}
verbose "ssh_exec: status:$status text:$output" 4
if { $status eq "" } {
return [list -1 "Couldn't parse $SSH output, $output."]
}
regsub "XYZ(\[0-9\]*)ZYX\n?" $output "" output
# Delete one trailing \n because that is what `exec' will do and we want
# to behave identical to it.
regsub "\n$" $output "" output
return [list [expr {$status != 0}] $output]
}
proc ssh_close { desthost } {
global SSH ssh_initialized
verbose "Closing the SSH connection to $desthost"
set ssh_port ""
set scp_port ""
set ssh_user ""
set ssh_useropts ""
set name ""
set hostname ""
if {[board_info $desthost exists username]} {
set ssh_useropts "-l [board_info $desthost username]"
set ssh_user "[board_info $desthost username]@"
} else {
set ssh_user ""
set ssh_useropts ""
}
if {[board_info $desthost exists hostname]} {
set hostname [board_info $desthost hostname]
}
if {[board_info $desthost exists ssh_opts]} {
append ssh_useropts " [board_info $desthost ssh_opts]"
}
if {[board_info $desthost exists port]} {
set ssh_port " -p [board_info $desthost port]"
} else {
set ssh_port ""
}
set args "$ssh_user$hostname $ssh_port"
# Kill the remote server
set status [catch "exec ssh $ssh_port -o ControlPath=/tmp/ssh-%r@%h:%p -O exit $args"]
set ssh_initialized "no"
return ""
}
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