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# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2006, 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Tom Grennan
# Date: 2007
# Description: setup bash completion for Vyatta operational commands
#
# **** End License ****
_vyatta_op_init ()
{
# empty and default line compeletion
complete -E -F _vyatta_op_expand
complete -D -F _vyatta_op_default_expand
# create the top level aliases for the unambiguous portions of the commands
# this is the only place we need an entire enumerated list of the subcommands
for cmd in $( ls /opt/vyatta/share/vyatta-op/templates/ ); do
for pos in $(seq 1 ${#cmd}); do
case ${cmd:0:$pos} in
for|do|done|if|fi|case|while|tr )
continue ;;
*) ;;
esac
complete -F _vyatta_op_expand ${cmd:0:$pos}
eval alias ${cmd:0:$pos}=\'_vyatta_op_run ${cmd:0:$pos}\'
done
done
shopt -s histverify
}
_vyatta_op_get_node_def_field ()
{
local file=$1 field=$2
sed -n '/^'"$field"':/,$ {
# strip field name and hold rest of line
s/[a-z]*: *//
h
:b
# at EOF, print hold buffer and quit
$ { x; p; q }
# input next line
n
# if start of another field def, print hold buf and quit
/^[a-z]*:/ { x; p; q }
# add to hold buf and branch to input next line
H
bb
}' $file
}
_vyatta_op_conv_node_path ()
{
# is the node ok, ambiguous, or invalid
local node_path
local node
local -a ARR
node_path=$1
node=$2
ARR=( $(compgen -d $node_path/$node) )
if [[ "${#ARR[@]}" == "1" ]]; then
echo ${ARR[0]##*/}
elif [[ "${#ARR[@]}" == "0" ]]; then
if [[ -d "${node_path}/node.tag" ]]; then
echo "$node tag"
else
echo "$node invalid"
fi
elif [[ -d "$node_path/$node" ]]; then
echo $node
elif [[ "$VYATTA_USER_LEVEL_DIR" != "/opt/vyatta/etc/shell/level/admin" ]];then
# special handling for unprivledged completions.
# Since top level commands are different for unprivledged users
# we need a handler to expand them properly.
local -a filtered_cmds=()
local -a allowed=( $(cat $VYATTA_USER_LEVEL_DIR/allowed-op.in) )
get_prefix_filtered_list $node allowed filtered_cmds
if [[ "${#filtered_cmds[@]}" == "1" ]];then
echo ${filtered_cmds[0]}
else
echo "${node} ambiguous"
fi
else
echo "$node ambiguous"
fi
}
_vyatta_op_conv_run_cmd ()
{
# Substitue bash positional variables
# for the same value in the expanded array
local restore_shopts=$( shopt -p extglob nullglob | tr \\n \; )
shopt -s extglob
shopt -u nullglob
local run_cmd="$1"
local line outline
local -i inquote=0;
local outcmd='';
local OIFS=$IFS
local re="([^']*')(.*)"
toggle_inquote()
{
if [[ $inquote == 0 ]]; then
inquote=1
else
inquote=0
fi
}
process_subline()
{
if [[ $inquote == 1 ]]; then
outline+="$1"
else
outline+=$(sed -e 's/\$\([0-9]\)/\$\{args\[\1\]\}/g' <<<"$1")
fi
}
run_cmd="${run_cmd/\"\$\@\"/${args[*]}}"
run_cmd="${run_cmd/\$\*/${args[*]}}"
run_cmd="${run_cmd//\\/\\\\}"
IFS=$'\n'
for line in ${run_cmd[@]}; do
outline=''
while [[ -n "$line" ]]; do
if [[ "$line" =~ $re ]]; then
process_subline "${BASH_REMATCH[1]}"
toggle_inquote
else
process_subline "$line"
fi
line="${BASH_REMATCH[2]}"
done
outcmd+="$outline\n"
done
IFS=$OIFS
eval "$restore_shopts"
echo -ne "$outcmd"
}
_vyatta_op_run ()
{
# if run with bash builtin "set -/+*" run set and return
# this happens when a different completion script runs eval "set ..."
# (VyOS T1604)
if [[ "$1" == "set" && "$2" =~ ^(-|\+).* ]]; then
set "${@:2}"
return
fi
local -i estat
local tpath=$vyatta_op_templates
local restore_shopts=$( shopt -p extglob nullglob | tr \\n \; )
shopt -s extglob nullglob
_vyatta_op_last_comp=${_vyatta_op_last_comp_init}
false; estat=$?
stty echo 2> /dev/null # turn echo on, this is a workaround for bug 7570
# not a fix we need to look at why the readline library
# is getting confused on paged help text.
i=1
declare -a args # array of expanded arguments
for arg in "$@"; do
local orig_arg=$arg
if [[ $arg == "*" ]]; then
arg="*" #leave user defined wildcards alone
else
arg=( $(_vyatta_op_conv_node_path $tpath $arg) ) # expand the arguments
fi
# output proper error message based on the above expansion
if [[ "${arg[1]}" == "ambiguous" ]]; then
echo -ne "\n Ambiguous command: ${args[@]} [$arg]\n" >&2
local -a cmds=( $(compgen -d $tpath/$arg) )
_vyatta_op_node_path=$tpath
local comps=$(_vyatta_op_help $arg ${cmds[@]##*/})
echo -e "$comps\n" | sed -e 's/^P/ P/'
eval $restore_shopts
return 1
elif [[ "${arg[1]}" == "invalid" ]]; then
echo -ne "\n Invalid command: ${args[@]} [$arg]\n\n" >&2
eval $restore_shopts
return 1
fi
if [ -f "$tpath/$arg/node.def" ] ; then
tpath+=/$arg
elif [ -f $tpath/node.tag/node.def ] ; then
tpath+=/node.tag
else
echo -ne "\n Invalid command: ${args[@]} [$arg]\n\n" >&2
eval $restore_shopts
return 1
fi
if [[ "$arg" == "node.tag" ]]; then
args[$i]=$orig_arg
else
args[$i]=$arg
fi
let "i+=1"
done
local run_cmd=$(_vyatta_op_get_node_def_field $tpath/node.def run)
run_cmd=$(_vyatta_op_conv_run_cmd "$run_cmd") # convert the positional parameters
local ret=0
# Exception for the `show file` command
local file_cmd='\$\{vyos_op_scripts_dir\}\/file\.py'
local cmd_regex="^(LESSOPEN=|less|pager|tail|(sudo )?$file_cmd).*"
if [ -n "$run_cmd" ]; then
eval $restore_shopts
if [[ -t 1 && "${args[1]}" == "show" && ! $run_cmd =~ $cmd_regex ]] ; then
eval "($run_cmd) | ${VYATTA_PAGER:-cat}"
else
eval "$run_cmd"
fi
else
echo -ne "\n Incomplete command: ${args[@]}\n\n" >&2
eval $restore_shopts
ret=1
fi
return $ret
}
### Local Variables:
### mode: shell-script
### End:
|
