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shellgopher
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check uid before executing netcat

This commit is contained in:
randomuser 2021-02-17 19:42:23 -06:00
parent f77f3fbe2e
commit 5af4557c03
1 changed files with 10 additions and 0 deletions
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10
shellgopher.sh
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@ -11,6 +11,15 @@ createsrv () {
nc -l "$1" <"$2" >>"$3" & exec 3>"$2" nc -l "$1" <"$2" >>"$3" & exec 3>"$2"
} }
die () {
# $1 - error message
printf "%s\n" $1
exit 1
}
checkuid () {
[ $(whoami) = "root" ] && \
die "You must execute shellgopher as root."
}
writefile () { writefile () {
# $1 - file # $1 - file
foo cat "$1" >&3 foo cat "$1" >&3
@ -34,6 +43,7 @@ tmplocation=$(mktmp)
writelocation="${tmplocation}/write" writelocation="${tmplocation}/write"
readlocation="${tmplocation}/read" readlocation="${tmplocation}/read"
checkuid
createsrv 70 "${writelocation}" "${readlocation}" createsrv 70 "${writelocation}" "${readlocation}"
printf "server created\n" printf "server created\n"
while true; do while true; do