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Diffstat (limited to 'gosher')
-rwxr-xr-xgosher77
1 files changed, 67 insertions, 10 deletions
diff --git a/gosher b/gosher
index 912c0a7..a021cb3 100755
--- a/gosher
+++ b/gosher
@@ -19,11 +19,11 @@
##
## gosher is a simple Gopher server in a POSIX shell script:
##
-## $ ./gosher [<PORT> [<GOPHERDIR>]
-##
-## If PORT is not specified, the default is 70. If GOPHERDIR is not
-## specified, "./" is assumed
+## $ ./gosher [<GOPHERDIR> [<HOSTNAME> [<PORT>]]]
##
+## If GOPHERDIR is not specified, "./" is assumed.
+## If HOSTNAME is not specified, "localhost" is used.
+## If PORT is not specified, the default port "70" is used.
##
## (c) 2018 Vincenzo 'KatolaZ' Nicosia <katolaz@freaknet.org>
##
@@ -82,9 +82,9 @@ NETCAT=$(which "$NETCAT")
if [ -z "${MYNAME#gosher}" ]; then
## we are called as gosher -- launch the server
-
- PORT=${1:-70}
- GOPHERDIR=${2:-"./"}
+ GOPHERDIR=${1:-"./"}
+ HOSTNAME=${2:-"localhost"}
+ PORT=${3:-70}
[ ! -f "${NETCAT}" ] || [ ! -x "${NETCAT}" ] && {
echo "Wrong NETCAT -- Exiting" >&2
@@ -101,7 +101,9 @@ if [ -z "${MYNAME#gosher}" ]; then
# shellcheck disable=SC2050
while [ 1 -eq 1 ]; do
# shellcheck disable=SC2094
- ${GOSHER_SERVE} "${GOPHERDIR}" <"$INF" | ${NETCAT} -vvvvv -l -p "${PORT}" >"$INF"
+ ${GOSHER_SERVE} "${GOPHERDIR}" \
+ "${HOSTNAME}" "${PORT}" <"$INF" |\
+ ${NETCAT} -vvvvv -l -p "${PORT}" >"$INF"
done
rm -f $INF
exit 0
@@ -109,7 +111,8 @@ if [ -z "${MYNAME#gosher}" ]; then
[ "$STYLE" = 'fork' ] && {
# shellcheck disable=SC2050
while [ 1 -eq 1 ]; do
- ${NETCAT} -vv -l -p "$PORT" -c "${GOSHER_SERVE} ${GOPHERDIR}"
+ ${NETCAT} -vv -l -p "$PORT" -c \
+ "${GOSHER_SERVE} ${GOPHERDIR} ${HOSTNAME} ${PORT}"
done
exit 0
}
@@ -197,10 +200,36 @@ EOF
}
-
+### Serve a CGI -- Set the environment and run the corresponding script
+## function
+serve_cgi(){
+ script_name=$( echo "$1" | sed -r 's:^/+::')
+ query_string="$2"
+ echo "script_name: ${script_name}" >&2
+ GATEWAY_INTERFACE="CGI/1.1"
+ PATH_INFO="${script_name}"
+ PATH_TRANSLATED="${script_name}"
+ QUERY_STRING="${query_string}"
+ REMOTE_ADDR=
+ REMOTE_HOST="${REMOTE_ADDR}"
+ REQUEST_METHOD="GET"
+ SCRIPT_NAME="${script_name}"
+ SERVER_NAME="${HOSTNAME}"
+ SERVER_PORT="${PORT}"
+ SERVER_PROTOCOL="gopher/1.0"
+ SERVER_SOFTWARE="gosher"
+ ####X_GOPHER_SEARCH= search (See above.)
+ export GATEWAY_INTERFACE PATH_INFO PATH_TRANSLATED QUERY_STRING
+ export REMOTE_ADDR REMOTE_HOST REQUEST_METHOD SCRIPT_NAME
+ export SERVER_NAME SERVER_PORT SERVER_PROTOCOL SERVER_SOFTWARE
+ ${GOPHERDIR}${script_name} "" "${query_string}" "${HOSTNAME}" ${PORT}
+ exit 0
+}
GOPHERDIR=${1:-"./"}
+HOSTNAME=${2:-"localhost"}
+PORT=${3:-"70"}
read -r selector
@@ -213,10 +242,36 @@ selector=$(echo "$selector" | sed -r 's:\$.*::g;s:\r::g' )
case $selector in
URL:*)
+ ## it's a special URL selector
url=$(echo "$selector" | cut -d ":" -f 2-)
serve_redirect "$url"
;;
+ /?*.cgi*)
+ ## it's a CGI
+ script_name=$(echo "$selector" | cut -d "?" -f 1)
+ query_string=$(echo "$selector" | cut -d "?" -f 2)
+ [ "${script_name}" = "${query_string}" ] && query_string=""
+ RP1=$(realpath "${GOPHERDIR}""${script_name}" || "")
+# shellcheck disable=SC2181
+ [ $? -eq 0 ] || invalid_selector "${selector}"
+ RP2=$(realpath "${GOPHERDIR}")"${script_name}"
+ RP2=$(echo "${RP2}" | sed -r 's/\/+/\//g')
+# shellcheck disable=SC2181
+ [ $? -eq 0 ] || invalid_selector "${selector}"
+ [ -n "$DEBUG" ] && {
+ echo "iRP1: ${RP1}"
+ echo "iRP2: ${RP2}"
+ }
+
+ if [ "${RP1}" = "${RP2}" ]; then
+ [ -x "${RP1}" ] && {
+ serve_cgi "${script_name}" "${query_string}"
+ }
+ fi
+ invalid_selector "${selector}"
+ ;;
/?*|"")
+ ## it's a regular selector
RP1=$(realpath "${GOPHERDIR}"/"${selector}" || "")
# shellcheck disable=SC2181
[ $? -eq 0 ] || invalid_selector "$selector"
@@ -243,6 +298,8 @@ case $selector in
invalid_selector "$selector"
;;
*)
+ ## we don't know what it is -- try to default to a
+ ## gophermap
[ -f "${GOPHERDIR}/gophermap" ] && serve_selector "${GOPHERDIR}/gophermap"
[ -f "${GOPHERDIR}/index.gph" ] && serve_index "${GOPHERDIR}/index.gph"
echo "got invalid selector: \"$selector\"" >&2