ref: master
./toymaker.sh
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#!/bin/sh # # Based on server by Upper Stream (c) 2017, MIT license # (https://gist.github.com/upperstream/b9b77429bc024541b7605aea76086ad8) . start.sh . get.sh . password.sh set -e exec >>~/toymaker.log exec 2>&1 program=${0##*/} usage() { cat <<-EOF Usage: $program [-p port] [docroot] $program -h -p port : specify listening port number; defaults to 1313 -h : print this help and quit docroot : specify document root directory; defaults to the current directory EOF } # default listening port port=1313 nc=$(command -v nc) || true pid_file=/tmp/$program.pid slashes() { printf "%s" "$1" | sed 's|[^/]||g' | wc -m } field() { echo "$1" | cut -d '/' -f "$2" } makefifo() { name="$1" mkfifo -m 0600 "/tmp/$name.fifo" && echo "/tmp/$name.fifo" } templateMessage() { message="$1" templateName=$2 contentTypeHeader=$3 while [ -n "$contentTypeHeader" ] do contentType=$(echo "$contentTypeHeader" | cut -d ',' -f1) contentTypeHeader=$(echo "$contentTypeHeader" | cut -d ',' -f2-) contentType=$(echo "$contentType" | cut -d ';' -f1) case $contentType in text/plain) ext='txt' ;; text/html|\*|\*/\*|'') ext='html' ;; image/\*|image/svg) ext='svg' ;; *) continue ;; esac [ -f "templates/$templateName.$ext" ] && break ext='' done [ -n "$ext" ] || return 1 #shellcheck disable=SC1090 . "templates/$templateName.$ext" printf '%s\n' "$contentType" template "$message" } respond200() { page="$1" contentType="$2" [ -z "$contentType" ] && contentType='text/html' printf "HTTP/1.1 200 OK\r\nContent-Length: %s\r\nContent-Type: %s\r\n\r\n%s\r\n" "${#page}" "$contentType" "$page" > "$fifo1" printf "200 %s" "${#page}" } respond200file() { filePath="$1" contentType="$2" { cat "$fifo2" > /dev/null; printf ""; } > "$fifo1" & printf "HTTP/1.1 200 OK\r\nContent-Length: %s\r\nContent-Type: %s\r\n\r\n" "$(wc -c "$filePath" | cut -d ' ' -f1)" "$contentType" >> "$fifo1" cat "$filePath" >> "$fifo1" sleep 1; echo "end" > "$fifo2" printf "200 %s" "$(wc -c "$filePath" | cut -d ' ' -f1)" } respond202() { toy=$1 item=$2 message=$3 contentType="$4" [ -z "$contentType" ] && contentType='text/html' printf "HTTP/1.1 202 Accepted\r\nContent-Length: %s\r\nLocation: /toys/%s/%s\r\n\r\n%s\r\n" "${#message}" "$toy" "$item" "$message" > "$fifo1" printf "202 -" } respond401() { message="" printf "HTTP/1.1 401 Unauthorized\r\nContent-Length: %s\r\n\r\n%s\r\n" "${#message}" "$message" > "$fifo1" printf "401 -" } respond403() { message="" printf "HTTP/1.1 403 Forbidden\r\nContent-Length: %s\r\n\r\n%s\r\n" "${#message}" "$message" > "$fifo1" printf "403 -" } respond404() { path=$1 message=$(templateMessage "$path not found" 'message' 'text/html' | tail -n+2) printf "HTTP/1.1 404 Not Found\r\nContent-Length: %s\r\n\r\n%s\r\n" "${#message}" "$message" > "$fifo1" printf "404 -" } respond405() { method=$1 message=$(templateMessage "$method unsupported" 'message' 'text/html' | tail -n+2) printf "HTTP/1.1 405 Method Not Allowed\r\nContent-Length: %s\r\n\r\n%s\r\n" "${#message}" "$message" > "$fifo1" printf "405 -" } respond406() { contentType=$1 message="$contentType unsupported" printf "HTTP/1.1 406 Not Acceptable\r\nContent-Length: %s\r\n\r\n%s\r\n" "${#message}" "$message" > "$fifo1" printf "406 -" } respond500() { message=$(templateMessage "Server error: $1" 'message' 'text/html' | tail -n+2) printf "HTTP/1.1 500 Internal Server Error\r\nContent-Length: %s\r\n\r\n%s\r\n" "${#message}" "$message" > "$fifo1" printf "500 -" } check_auth() { authorization=$1 stored=$(cat password) if [ -z "$stored" ] || [ -z "$authorization" ] then respond401 return 1 fi if ! printf '%s' "$authorization" | verify "$stored" then respond403 return 1 fi } execute() { method="$1" path="$2" authorization="$3" accept="$4" _toys=$(field "$path" 2) if [ "$_toys" != 'toys' ] then respond404 "$path" return 1 fi case $method in GET) if [ "$(slashes "$path")" -eq 2 ] then toy=$(field "$path" 3) if [ "$toy" = '' ] then if page=$(templateMessage "$(list_toys)" 'toys' 'text/html') then respond200 "$(echo "$page" | tail -n+2)" else respond406 "$accept" return 1 fi else r=$(list_items "$toy") status=$(echo "$r" | cut -d ';' -f1) content=$(echo "$r" | cut -d ';' -f2) if [ "$status" = 'n' ] then respond404 "toy $toy" return 1 elif page=$(templateMessage "$toy;$content" 'toy' 'text/html') then respond200 "$(echo "$page" | tail -n+2)" else respond406 "$accept" return 1 fi fi elif [ "$(slashes "$path")" -eq 3 ] then toy=$(field "$path" 3) item=$(field "$path" 4) if [ -z "$item" ] then respond404 "$path" return 1 fi r=$(show_item "$toy" "$item") artifacts=$(item_artifacts "$toy" "$item") status=$(echo "$r" | head -n1 | cut -d ';' -f1) if [ "$status" = 'n' ] then respond404 "item $toy/$item" return 1 elif page=$(templateMessage "$artifacts;$toy;$item;$r" 'item' "$accept") then body=$(echo "$page" | tail -n+2) contentType=$(echo "$page" | head -n1) if [ "$status" = 'r' ] then respond202 "$toy" "$item" "$body" "$contentType" else respond200 "$body" "$contentType" fi else respond406 "$accept" return 1 fi elif [ "$(slashes "$path")" -eq 4 ] then toy=$(field "$path" 3) item=$(field "$path" 4) artifactName=$(field "$path" 5) r=$(get_artifact "$toy" "$item" "$artifactName") status=$(echo "$r" | cut -d ';' -f 1) if [ "$status" = 'n' ] then respond404 "artifact $toy/$item/$artifactName" return 1 else contentType=$(echo "$r" | cut -d ';' -f 2) filePath=$(echo "$r" | cut -d ';' -f 3) respond200file "$filePath" "$contentType" fi else respond404 "$path" return 1 fi ;; POST) check_auth "$authorization" || return 1 toy=$(field "$path" 3) if [ "$(slashes "$path")" -ne 3 ] || [ -n "$(field "$path" 4)" ] then respond404 "$path" return 1 fi if ! (podman image ls --format "{{.Repository}}" | grep -x "localhost/toy_$toy" -q) then respond404 "toy $toy" return 1 fi if item=$(start_item "$toy") then respond202 "$toy" "$item" else respond500 "error while creating $toy" return 1 fi ;; DELETE) check_auth "$authorization" || return 1 if [ "$(slashes "$path")" -eq 3 ] then toy=$(field "$path" 3) item=$(field "$path" 4) if [ -z "$toy" ] || [ -z "$item" ] then respond404 "$path" return 1 fi if stop_item "$toy" "$item" then respond200 "" else respond500 "error while stopping $toy/$item" return 1 fi else respond404 "$path" return 1 fi ;; *) respond405 "$method" return 1 ;; esac } cleanup() { rm "$fifo1" "$fifo2" "$pid_file" } interrupt() { cleanup exit 0 } parse() { cr=$(printf "\r") while read -r line; do line="${line%"$cr"}" case "$line" in GET*|POST*|PUT*|DELETE*|HEAD*|OPTIONS*|TRACE*) # shellcheck disable=SC2086 set -- $line method=$1 path=$2 ;; Host:*) host=${line#Host: } ;; Accept:*) accept=${line#Accept: } ;; accept:*) accept=${line#accept: } ;; Authorization:*) authorization=${line#Authorization: } ;; authorization:*) authorization=${line#authorization: } ;; *:*) ;; "") date=$(date +'%d/%m/%Y:%H:%M:%S %z') status_length=$(execute "$method" "$path" "$authorization" "$accept") printf "%s %s \"http://%s%s\" %s\n" "$date" "$method" "$host" "$path" "$status_length" trap - INT exit ;; *) ;; esac done } # dependency verification for cmd in nc podman awk do command -v $cmd >/dev/null || { echo "$0: \`$cmd\` not found"; exit 2; } done while getopts p:h opt; do case $opt in p) port=$OPTARG;; h) usage; exit 255;; *) usage; exit 255;; esac done shift $((OPTIND-1)) if [ $# -eq 0 ]; then docroot=. else docroot="$1" fi docroot=$(cd "$docroot"; pwd) # FIFO to write HTTP response if ! fifo1=$(makefifo "${0##*/}.$$.1"); then echo "$0: creating a named pipe failed. Already running?" 1>&2 exit 1 fi # FIFO for internal event notification if ! fifo2=$(makefifo "${0##*/}.$$.2"); then echo "$0: creating a named pipe failed. Already running?" 1>&2 exit 1 fi trap interrupt INT echo $$ > "$pid_file" cat 1>&2 <<EOF Simple HTTP Server Listening at the port number $port. Type ^C to quit. EOF # shellcheck disable=SC2002 while cat "$fifo1" | "$nc" -l -p "$port" | parse; do : done cleanup exit |