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#compdef ss
local curcontext="$curcontext" suf ret=1
local -a state line expl pref filt
local -A opt_args
local info="-h -V --help --version"
local sx="state exclude"
_arguments -C -s \
"(- *)"{-h,--help}'[show option summary]' \
"(- *)"{-V,--version}'[show version information]' \
"($info -n --numeric)"{-n,--numeric}"[don't resolve service names]" \
"($info -r --resolve)"{-r,--resolve}'[resolve host addresses]' \
"($info -a --all -l --listening)"{-a,--all}'[display all sockets]' \
"($info -l --listening -a --all)"{-l,--listening}'[display listening sockets]' \
"($info -o --options -e --extended)"{-o,--options}'[show timer information]' \
"($info -e --extended -o --options)"{-e,--extended}'[show detailed information]' \
"($info -m --memory)"{-m,--memory}'[show socket memory usage]' \
"($info -p --processes)"{-p,--processes}'[show process using each socket]' \
"($info -i --info)"{-i,--info}'[show internal TCP information]' \
"($info -s --summary)"{-s,--summary}'[print summary statistics]' \
"($info -b --bpf)"{-b,--bpf}'[show bpf filter socket information]' \
"($info -E --events)"{-E,--events}'[continually display sockets as they are destroyed]' \
"($info -Z --context)"{-Z,--context}'[display process SELinux security contexts]' \
"($info -z --contexts)"{-z,--contexts}'[display process and socket SELinux security contexts]' \
"($info -N --net)"{-N,--net}'[switch to specified network namespace]:network namespace' \
"($info -4 --ipv4 -6 --ipv6)"{-4,--ipv4}'[display only IP version 4 sockets]' \
"($info -4 --ipv4 -6 --ipv6)"{-6,--ipv6}'[display only IP version 6 sockets]' \
"($info -0 --packet)"{-0,--packet}'[display PACKET sockets]' \
"($info -t --tcp)"{-t,--tcp}'[display TCP sockets]' \
"($info -S --sctp)"{-S,--sctp}'[display SCTP sockets]' \
"($info -u --udp)"{-u,--udp}'[display UDP sockets]' \
"($info -d --dccp)"{-d,--dccp}'[display DCCP sockets]' \
"($info -w --raw)"{-w,--raw}'[display RAW sockets]' \
"($info -x --unix)"{-x,--unix}'[display Unix domain sockets]' \
"($info -f --family)"{-f,--family}'[display sockets of specified type]:family:(unix inet inet6 link netlink unix)' \
"($info -K --kill)"{-K,--kill}'[forcibly close sockets, display what was closed]' \
"($info -H --no-header)"{-H,--no-header}'[suppress header line]' \
"($info -A --query --socket)"{-A,--query,--socket}'[specify socket tables to show]: :_values -s , socket\ table all inet tcp udp raw unix packet netlink unix_dgram unix_stream unix_seqpacket packet_raw packet_dgram' \
"($info -D)"{-D,--diag=}'[dump raw info to file]:file:_files' \
"($info -F)"{-F,--filter=}'[read filter information from a file]:file:_files' \
"($info)*: :->filter" && ret=0
if [[ -n $state ]]; then
case $words[CURRENT-1] in
(d|s)port)
_wanted operators expl operator \
compadd \< \> \= \>= \<= \== \!= eq ge gt lt le ne && ret=0
;;
dst|src)
if compset -P unix: || (( $+opt_args[-x] + $+opt_args[--unix] )) || [[ $opt_args[-f] = unix ]]; then
_files -g '*(=)' && ret=0
elif compset -P nl:; then
if compset -P \*:; then
_pids && ret=0
else
_message channel
fi
elif compset -P link:; then
compset -P \*: && _message ifindex || _message protocol
else
compset -P 'inet(6|):'
pref=$?
compset -S ':*' || suf="-qS:"
if compset -P \*:; then
_ports && ret=0
elif compset -P \*/; then
_wanted netmasks expl netmask compadd $suf {1..31} && ret=0
elif (( pref )); then
_alternative \
"hosts:host:_hosts $suf" \
"prefixes:prefix:compadd $suf nl link unix" && ret=0
else
_hosts $suf && ret=0
fi
fi
;;
state|exclude)
_wanted states expl state compadd -M 'm:{a-zA-Z_}={A-Za-z-}' \
ESTABLISHED SYN-SENT SYN-RECV FIN-WAIT-1 FIN-WAIT-2 TIME-WAIT \
CLOSED CLOSE-WAIT LAST-ACK LISTEN CLOSING \
all connected synchronized bucket big && ret=0
;;
*)
if [[ $words[CURRENT-2] = (d|s)port ]]; then
compset -P '*:' || pref=(-P :)
_ports $pref
return
else
(( $#line > 1 )) && [[ ${words[CURRENT-1]:Q} != (and|or|\() ]] &&
filt=( "($sx)*"{and,or} )
_values -w -s ' ' -S ' ' filter $filt \
"*state[sockets in specified state]" \
"*exclude[sockets not in specified state]" \
"($sx)*src[local address/port of socket]" \
"($sx)*dst[peer address/port of socket]" \
"($sx)*dport[peer port]: :(lt gt ge)" \
"($sx)*sport[local port]" \
"($sx)*autobound[socket bound to ephemeral port]" \
"($sx)*"{not,\(,\)} && ret=0
fi
;;
esac
fi
return ret
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