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Fixed support for binary files #21

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Fixed support for binary files #21

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224 changes: 135 additions & 89 deletions bashttpd
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,9 @@
# Original author: Avleen Vig, 2012
# Reworked by: Josh Cartwright, 2012

warn() { echo "WARNING: $@" >&2; }
warn() {
echo "WARNING: $@" >&2
}

[ -r bashttpd.conf ] || {
cat >bashttpd.conf <<'EOF'
Expand Down Expand Up @@ -71,6 +73,10 @@ warn() { echo "WARNING: $@" >&2; }
# When a client's requested URI has the word 'root' in it, serve up
# a directory listing of /
#
# on_uri_match '^/downloads+/*(.*)' serve_dir_or_file_from "/path/to/Downloads"
#
# When requesting /downloads show tree view of dir, when selecting file delivering it
#
# DOCROOT=/var/www/html
# on_uri_match '/(.*)' serve_dir_or_file_from "$DOCROOT"
# When any URI request is made, attempt to serve a directory listing
Expand Down Expand Up @@ -100,140 +106,179 @@ unconditionally serve_static_string 'Hello, world! You can configure bashttpd b
# is invoked with the arguments '/say_hello_to/Josh' 'Josh',
# (${BASH_REMATCH[0]} is always the full match)
EOF
warn "Created bashttpd.conf using defaults. Please review it/configure before running bashttpd again."
exit 1

warn "Created bashttpd.conf using defaults. Please review it/configure before running bashttpd again."
exit 1
}

recv() { echo "< $@" >&2; }
send() { echo "> $@" >&2;
printf '%s\r\n' "$*"; }
recv() {
echo "< $@" >&2
}

send() {
echo "> $@" >&2
printf '%s\r\n' "$*"
}

[[ $UID = 0 ]] && warn "It is not recommended to run bashttpd as root."

DATE=$(date +"%a, %d %b %Y %H:%M:%S %Z")

declare -a RESPONSE_HEADERS=(
"Date: $DATE"
"Expires: $DATE"
"Server: Slash Bin Slash Bash"
"Date: $DATE"
"Expires: $DATE"
"Server: Slash Bin Slash Bash"
)

add_response_header() {
RESPONSE_HEADERS+=("$1: $2")
RESPONSE_HEADERS+=("$1: $2")
}

declare -a HTTP_RESPONSE=(
[200]="OK"
[400]="Bad Request"
[403]="Forbidden"
[404]="Not Found"
[405]="Method Not Allowed"
[500]="Internal Server Error"
[200]="OK"
[400]="Bad Request"
[403]="Forbidden"
[404]="Not Found"
[405]="Method Not Allowed"
[500]="Internal Server Error"
)

send_response() {
local code=$1
send "HTTP/1.0 $1 ${HTTP_RESPONSE[$1]}"
for i in "${RESPONSE_HEADERS[@]}"; do
send "$i"
done
send
while read -r line; do
send "$line"
done
local code=$1
send "HTTP/1.1 $1 ${HTTP_RESPONSE[$1]}"
for i in "${RESPONSE_HEADERS[@]}"
do
send "$i"
done
send

while read -r line
do
send "$line"
done
}

send_response_ok_exit() {
send_response 200
exit 0
}

send_response_ok_exit() { send_response 200; exit 0; }
send_fileresponse() {
local code=$1
send "HTTP/1.1 $1 ${HTTP_RESPONSE[$1]}"
for i in "${RESPONSE_HEADERS[@]}"
do
send "$i"
done
send
}

send_fileresponse_ok_exit() {
send_fileresponse 200
cat "$1"
exit 0
}

fail_with() {
send_response "$1" <<< "$1 ${HTTP_RESPONSE[$1]}"
exit 1
send_response "$1" <<< "$1 ${HTTP_RESPONSE[$1]}"
exit 1
}

serve_file() {
local file=$1
local file=$1

read -r CONTENT_TYPE < <(file -b --mime-type "$file") && \
add_response_header "Content-Type" "$CONTENT_TYPE"
read -r CONTENT_LENGTH < <(stat -c'%s' "$file") && \
add_response_header "Content-Length" "$CONTENT_LENGTH"
read -r CONTENT_TYPE < <(file -b --mime-type "$file") && \
add_response_header "Content-Type" "$CONTENT_TYPE"
read -r CONTENT_LENGTH < <(stat -c'%s' "$file") && \
add_response_header "Content-Length" "$CONTENT_LENGTH"

send_response_ok_exit < "$file"
send_fileresponse_ok_exit "$file"
}

serve_dir_with_tree()
{
local dir="$1" tree_vers tree_opts basehref x
serve_dir_with_tree() {
local dir="${1%/}"
local tree_vers=""
local tree_opts=""
local basehref="${2%/}"
local x=""

add_response_header "Content-Type" "text/html; charset=UTF-8"

add_response_header "Content-Type" "text/html"
# The --du option was added in 1.6.0.
read x tree_vers x < <(tree --version)
if [[ $tree_vers == v1.6* ]]
then
send_response_ok_exit < \
<(tree -C -H "$basehref" --du -L 1 -D "$dir")

# The --du option was added in 1.6.0.
read x tree_vers x < <(tree --version)
[[ $tree_vers == v1.6* ]] && tree_opts="--du"
else
send_response_ok_exit < \
<(tree -C -H "$basehref" -L 1 -D "$dir")

send_response_ok_exit < \
<(tree -H "$2" -L 1 "$tree_opts" -D "$dir")
fi
}

serve_dir_with_ls()
{
local dir=$1
serve_dir_with_ls() {
local dir=$1

add_response_header "Content-Type" "text/plain"
add_response_header "Content-Type" "text/plain; charset=UTF-8"

send_response_ok_exit < \
<(ls -la "$dir")
send_response_ok_exit < \
<(ls -la "$dir")
}

serve_dir() {
local dir=$1
local dir=$1

# If `tree` is installed, use that for pretty output.
which tree &>/dev/null && \
serve_dir_with_tree "$@"
# If `tree` is installed, use that for pretty output.
which tree &>/dev/null && \
serve_dir_with_tree "$@"

serve_dir_with_ls "$@"
serve_dir_with_ls "$@"

fail_with 500
fail_with 500
}

serve_dir_or_file_from() {
local URL_PATH=$1/$3
shift

# sanitize URL_PATH
URL_PATH=${URL_PATH//[^a-zA-Z0-9_~\-\.\/]/}
[[ $URL_PATH == *..* ]] && fail_with 400

# Serve index file if exists in requested directory
[[ -d $URL_PATH && -f $URL_PATH/index.html && -r $URL_PATH/index.html ]] && \
URL_PATH="$URL_PATH/index.html"

if [[ -f $URL_PATH ]]; then
[[ -r $URL_PATH ]] && \
serve_file "$URL_PATH" "$@" || fail_with 403
elif [[ -d $URL_PATH ]]; then
[[ -x $URL_PATH ]] && \
serve_dir "$URL_PATH" "$@" || fail_with 403
fi

fail_with 404
local URL_PATH=$1/$3
shift

# sanitize URL_PATH
URL_PATH=${URL_PATH//[^a-zA-Z0-9_~\-\.\/]/}
[[ $URL_PATH == *..* ]] && fail_with 400

# Serve index file if exists in requested directory
[[ -d $URL_PATH && -f $URL_PATH/index.html && -r $URL_PATH/index.html ]] && \
URL_PATH="$URL_PATH/index.html"

if [[ -f $URL_PATH ]]
then
[[ -r $URL_PATH ]] && \
serve_file "$URL_PATH" "$@" || fail_with 403
elif [[ -d $URL_PATH ]]
then
[[ -x $URL_PATH ]] && \
serve_dir "$URL_PATH" "$@" || fail_with 403
fi

fail_with 404
}

serve_static_string() {
add_response_header "Content-Type" "text/plain"
send_response_ok_exit <<< "$1"
add_response_header "Content-Type" "text/plain; charset=UTF-8"
send_response_ok_exit <<< "$1"
}

on_uri_match() {
local regex=$1
shift
local regex=$1
shift

[[ $REQUEST_URI =~ $regex ]] && \
"$@" "${BASH_REMATCH[@]}"
[[ $REQUEST_URI =~ $regex ]] && \
"$@" "${BASH_REMATCH[@]}"
}

unconditionally() {
"$@" "$REQUEST_URI"
"$@" "$REQUEST_URI"
}

# Request-Line HTTP RFC 2616 $5.1
Expand All @@ -248,21 +293,22 @@ read -r REQUEST_METHOD REQUEST_URI REQUEST_HTTP_VERSION <<<"$line"
[ -n "$REQUEST_METHOD" ] && \
[ -n "$REQUEST_URI" ] && \
[ -n "$REQUEST_HTTP_VERSION" ] \
|| fail_with 400
|| fail_with 400

# Only GET is supported at this time
[ "$REQUEST_METHOD" = "GET" ] || fail_with 405

declare -a REQUEST_HEADERS

while read -r line; do
line=${line%%$'\r'}
recv "$line"
while read -r line
do
line=${line%%$'\r'}
recv "$line"

# If we've reached the end of the headers, break.
[ -z "$line" ] && break
# If we've reached the end of the headers, break.
[ -z "$line" ] && break

REQUEST_HEADERS+=("$line")
REQUEST_HEADERS+=("$line")
done

source bashttpd.conf
Expand Down