557 lines
13 KiB
V
557 lines
13 KiB
V
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
|
|
// Use of this source code is governed by an MIT license
|
|
// that can be found in the LICENSE file.
|
|
|
|
module vweb
|
|
|
|
import os
|
|
import net
|
|
import net.http
|
|
import net.urllib
|
|
import strings
|
|
import time
|
|
|
|
pub const (
|
|
methods_with_form = ['POST', 'PUT', 'PATCH']
|
|
method_all = ['GET','POST','PUT','PATCH','DELETE']
|
|
header_server = 'Server: VWeb\r\n'
|
|
header_connection_close = 'Connection: close\r\n'
|
|
headers_close = '${header_server}${header_connection_close}\r\n'
|
|
http_404 = 'HTTP/1.1 404 Not Found\r\nContent-Type: text/plain\r\n${headers_close}404 Not Found'
|
|
http_500 = 'HTTP/1.1 500 Internal Server Error\r\nContent-Type: text/plain\r\n${headers_close}500 Internal Server Error'
|
|
mime_types = {
|
|
'.css': 'text/css; charset=utf-8',
|
|
'.gif': 'image/gif',
|
|
'.htm': 'text/html; charset=utf-8',
|
|
'.html': 'text/html; charset=utf-8',
|
|
'.jpg': 'image/jpeg',
|
|
'.js': 'application/javascript',
|
|
'.md': 'text/markdown; charset=utf-8',
|
|
'.pdf': 'application/pdf',
|
|
'.png': 'image/png',
|
|
'.svg': 'image/svg+xml',
|
|
'.txt': 'text/plain; charset=utf-8',
|
|
'.wasm': 'application/wasm',
|
|
'.xml': 'text/xml; charset=utf-8'
|
|
}
|
|
max_http_post_size = 1024 * 1024
|
|
default_port = 8080
|
|
)
|
|
|
|
pub struct Context {
|
|
mut:
|
|
static_files map[string]string
|
|
static_mime_types map[string]string
|
|
content_type string = 'text/plain'
|
|
pub:
|
|
req http.Request
|
|
conn net.Socket
|
|
// TODO Response
|
|
pub mut:
|
|
form map[string]string
|
|
query map[string]string
|
|
headers string // response headers
|
|
done bool
|
|
page_gen_start i64
|
|
form_error string
|
|
|
|
}
|
|
|
|
pub struct Cookie {
|
|
name string
|
|
value string
|
|
exprires time.Time
|
|
secure bool
|
|
http_only bool
|
|
}
|
|
|
|
pub struct Result {}
|
|
|
|
fn (mut ctx Context) send_response_to_client(mimetype string, res string) bool {
|
|
if ctx.done { return false }
|
|
ctx.done = true
|
|
mut sb := strings.new_builder(1024)
|
|
defer { sb.free() }
|
|
sb.write('HTTP/1.1 200 OK\r\nContent-Type: ') sb.write(mimetype)
|
|
sb.write('\r\nContent-Length: ') sb.write(res.len.str())
|
|
sb.write(ctx.headers)
|
|
sb.write('\r\n')
|
|
sb.write(headers_close)
|
|
sb.write(res)
|
|
s := sb.str()
|
|
defer {
|
|
s.free()
|
|
}
|
|
ctx.conn.send_string(s) or { return false }
|
|
return true
|
|
}
|
|
|
|
pub fn (mut ctx Context) html(s string) {
|
|
ctx.send_response_to_client('text/html', s)
|
|
}
|
|
|
|
pub fn (mut ctx Context) text(s string) Result {
|
|
ctx.send_response_to_client('text/plain', s)
|
|
return Result{}
|
|
}
|
|
|
|
pub fn (mut ctx Context) json(s string) Result {
|
|
ctx.send_response_to_client('application/json', s)
|
|
return Result{}
|
|
}
|
|
|
|
pub fn (mut ctx Context) ok(s string) Result {
|
|
ctx.send_response_to_client(ctx.content_type, s)
|
|
return Result{}
|
|
}
|
|
|
|
pub fn (mut ctx Context) redirect(url string) Result {
|
|
if ctx.done { return Result{} }
|
|
ctx.done = true
|
|
ctx.conn.send_string('HTTP/1.1 302 Found\r\nLocation: ${url}${ctx.headers}\r\n${headers_close}') or { return Result{} }
|
|
return Result{}
|
|
}
|
|
|
|
pub fn (mut ctx Context) not_found() Result {
|
|
if ctx.done { return vweb.Result{} }
|
|
ctx.done = true
|
|
ctx.conn.send_string(http_404) or {}
|
|
return vweb.Result{}
|
|
}
|
|
|
|
pub fn (mut ctx Context) set_cookie(cookie Cookie) {
|
|
secure := if cookie.secure { "Secure;" } else { "" }
|
|
http_only := if cookie.http_only { "HttpOnly" } else { "" }
|
|
ctx.add_header('Set-Cookie', '$cookie.name=$cookie.value; $secure $http_only')
|
|
}
|
|
|
|
pub fn (mut ctx Context) set_cookie_old(key, val string) {
|
|
// TODO support directives, escape cookie value (https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie)
|
|
//println('Set-Cookie $key=$val')
|
|
//ctx.add_header('Set-Cookie', '${key}=${val}; Secure; HttpOnly')
|
|
ctx.add_header('Set-Cookie', '${key}=${val}; HttpOnly')
|
|
}
|
|
|
|
pub fn (mut ctx Context) set_content_type(typ string) {
|
|
ctx.content_type = typ
|
|
}
|
|
|
|
pub fn (mut ctx Context) set_cookie_with_expire_date(key, val string, expire_date time.Time) {
|
|
ctx.add_header('Set-Cookie', '$key=$val; Secure; HttpOnly; expires=${expire_date.utc_string()}')
|
|
}
|
|
|
|
pub fn (ctx &Context) get_cookie(key string) ?string { // TODO refactor
|
|
mut cookie_header := ctx.get_header('cookie')
|
|
if cookie_header == '' {
|
|
cookie_header = ctx.get_header('Cookie')
|
|
}
|
|
cookie_header = ' ' + cookie_header
|
|
//println('cookie_header="$cookie_header"')
|
|
//println(ctx.req.headers)
|
|
cookie := if cookie_header.contains(';') {
|
|
cookie_header.find_between(' $key=', ';')
|
|
} else {
|
|
cookie_header.find_between(' $key=', '\r')
|
|
}
|
|
if cookie != '' {
|
|
return cookie.trim_space()
|
|
}
|
|
return error('Cookie not found')
|
|
}
|
|
|
|
pub fn (mut ctx Context) add_header(key, val string) {
|
|
//println('add_header($key, $val)')
|
|
ctx.headers = ctx.headers + '\r\n$key: $val'
|
|
//println(ctx.headers)
|
|
}
|
|
|
|
pub fn (ctx &Context) get_header(key string) string {
|
|
return ctx.req.headers[key]
|
|
}
|
|
|
|
//fn handle_conn(conn net.Socket) {
|
|
//println('handle')
|
|
|
|
//}
|
|
|
|
pub fn run<T>(port int) {
|
|
mut app := T{}
|
|
run_app<T>(mut app, port)
|
|
}
|
|
|
|
pub fn run_app<T>(mut app T, port int) {
|
|
println('Running a Vweb app on http://localhost:$port')
|
|
l := net.listen(port) or { panic('failed to listen') }
|
|
app.vweb = Context{}
|
|
app.init_once()
|
|
//app.reset()
|
|
for {
|
|
conn := l.accept() or { panic('accept() failed') }
|
|
//handle_conn<T>(conn, mut app)
|
|
handle_conn<T>(conn, mut app)
|
|
//app.vweb.page_gen_time = time.ticks() - t
|
|
//eprintln('handle conn() took ${time.ticks()-t}ms')
|
|
//message := readall(conn)
|
|
//println(message)
|
|
/*
|
|
if message.len > max_http_post_size {
|
|
println('message.len = $message.len > max_http_post_size')
|
|
conn.send_string(http_500) or {}
|
|
conn.close() or {}
|
|
continue
|
|
}
|
|
*/
|
|
|
|
//lines := message.split_into_lines()
|
|
//println(lines)
|
|
|
|
/*
|
|
if lines.len < 2 {
|
|
conn.send_string(http_500) or {}
|
|
conn.close() or {}
|
|
continue
|
|
}
|
|
*/
|
|
}
|
|
}
|
|
|
|
fn handle_conn<T>(conn net.Socket, mut app T) {
|
|
defer { conn.close() or {} }
|
|
//fn handle_conn<T>(conn net.Socket, app_ T) T {
|
|
//mut app := app_
|
|
//first_line := strip(lines[0])
|
|
page_gen_start := time.ticks()
|
|
first_line := conn.read_line()
|
|
$if debug {
|
|
println('firstline="$first_line"')
|
|
}
|
|
|
|
// Parse the first line
|
|
// "GET / HTTP/1.1"
|
|
//first_line := s.all_before('\n')
|
|
vals := first_line.split(' ')
|
|
if vals.len < 2 {
|
|
println('no vals for http')
|
|
conn.send_string(http_500) or {}
|
|
return
|
|
//continue
|
|
}
|
|
mut headers := []string{}
|
|
mut body := ''
|
|
mut in_headers := true
|
|
mut len := 0
|
|
mut body_len := 0
|
|
//for line in lines[1..] {
|
|
for _ in 0..100 {
|
|
//println(j)
|
|
line := conn.read_line()
|
|
sline := strip(line)
|
|
if sline == '' {
|
|
//if in_headers {
|
|
// End of headers, no body => exit
|
|
if len == 0 {
|
|
break
|
|
}
|
|
//} //else {
|
|
// End of body
|
|
//break
|
|
//}
|
|
in_headers = false
|
|
}
|
|
if in_headers {
|
|
//println(sline)
|
|
headers << sline
|
|
if sline.starts_with('Content-Length') {
|
|
len = sline.all_after(': ').int()
|
|
//println('GOT CL=$len')
|
|
}
|
|
} else {
|
|
body += sline + '\r\n'
|
|
body_len += body.len
|
|
if body_len >= len {
|
|
break
|
|
}
|
|
//println('body:$body')
|
|
}
|
|
}
|
|
|
|
req := http.Request{
|
|
headers: http.parse_headers(headers) //s.split_into_lines())
|
|
data: strip(body)
|
|
ws_func: 0
|
|
user_ptr: 0
|
|
method: vals[0]
|
|
url: vals[1]
|
|
}
|
|
$if debug {
|
|
println('req.headers = ')
|
|
println(req.headers)
|
|
println('req.data="$req.data"' )
|
|
//println('vweb action = "$action"')
|
|
}
|
|
//mut app := T{
|
|
app.vweb = Context{
|
|
req: req
|
|
conn: conn
|
|
form: map[string]string
|
|
static_files: app.vweb.static_files
|
|
static_mime_types: app.vweb.static_mime_types
|
|
page_gen_start: page_gen_start
|
|
}
|
|
//}
|
|
if req.method in methods_with_form {
|
|
app.vweb.parse_form(req.data)
|
|
}
|
|
if vals.len < 2 {
|
|
$if debug {
|
|
println('no vals for http')
|
|
}
|
|
return
|
|
//continue
|
|
}
|
|
|
|
// Serve a static file if it is one
|
|
// TODO: handle url parameters properly - for now, ignore them
|
|
mut static_file_name := app.vweb.req.url
|
|
if static_file_name.contains('?') {
|
|
static_file_name = static_file_name.all_before('?')
|
|
}
|
|
static_file := app.vweb.static_files[static_file_name]
|
|
mime_type := app.vweb.static_mime_types[static_file_name]
|
|
|
|
if static_file != '' && mime_type != '' {
|
|
data := os.read_file(static_file) or {
|
|
conn.send_string(http_404) or {}
|
|
return
|
|
}
|
|
app.vweb.send_response_to_client(mime_type, data)
|
|
data.free()
|
|
return
|
|
}
|
|
app.init()
|
|
|
|
// Call the right action
|
|
println('route matching...')
|
|
//t := time.ticks()
|
|
//mut action := ''
|
|
mut route_words := []string{}
|
|
mut url_words := vals[1][1..].split('/').filter(it != '')
|
|
|
|
|
|
if url_words.len == 0 {
|
|
app.index()
|
|
return
|
|
} else {
|
|
// Parse URL query
|
|
if url_words.last().contains('?') {
|
|
tmp_query := url_words.last().all_after('?').split('&').map(it.split('='))
|
|
url_words[url_words.len - 1] = url_words.last().all_before('?')
|
|
for data in tmp_query {
|
|
if data.len == 2 {
|
|
app.vweb.query[data[0]] = data[1]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
mut vars := []string{cap: route_words.len}
|
|
mut action := ''
|
|
$for method in T {
|
|
if attrs == '' {
|
|
// No routing for this method. If it matches, call it and finish matching
|
|
// since such methods have a priority.
|
|
// For example URL `/register` matches route `/:user`, but `fn register()`
|
|
// should be called first.
|
|
if (req.method == 'GET' && url_words[0] == method && url_words.len == 1) || (req.method == 'POST' && url_words[0] + '_post' == method) {
|
|
println('easy match method=$method')
|
|
app.$method(vars)
|
|
return
|
|
}
|
|
} else {
|
|
route_words = attrs[1..].split('/')
|
|
if url_words.len == route_words.len || (url_words.len >= route_words.len - 1 && route_words.last().ends_with('...')) {
|
|
// match `/:user/:repo/tree` to `/vlang/v/tree`
|
|
mut matching := false
|
|
mut unknown := false
|
|
mut variables := []string{cap: route_words.len}
|
|
for i in 0..route_words.len {
|
|
if url_words.len == i {
|
|
variables << ''
|
|
matching = true
|
|
unknown = true
|
|
break
|
|
}
|
|
if url_words[i] == route_words[i] {
|
|
// no parameter
|
|
matching = true
|
|
continue
|
|
} else if route_words[i].starts_with(':') {
|
|
// is parameter
|
|
if i < route_words.len && !route_words[i].ends_with('...') {
|
|
// normal parameter
|
|
variables << url_words[i]
|
|
} else {
|
|
// array parameter only in the end
|
|
variables << url_words[i..].join('/')
|
|
}
|
|
matching = true
|
|
unknown = true
|
|
continue
|
|
} else {
|
|
matching = false
|
|
break
|
|
}
|
|
}
|
|
if matching && !unknown {
|
|
// absolute router words like `/test/site`
|
|
app.$method(vars)
|
|
return
|
|
} else if matching && unknown {
|
|
// router words with paramter like `/:test/site`
|
|
action = method
|
|
vars = variables
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if action == '' {
|
|
// site not found
|
|
conn.send_string(http_404) or {}
|
|
return
|
|
}
|
|
send_action<T>(action, vars, mut app)
|
|
}
|
|
|
|
fn send_action<T>(action string, vars []string, mut app T) {
|
|
// TODO remove this function
|
|
$for method in T {
|
|
// search again for method
|
|
if action == method && attrs != '' {
|
|
// call action method
|
|
app.$method(vars)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn (mut ctx Context) parse_form(s string) {
|
|
if ctx.req.method !in methods_with_form {
|
|
return
|
|
}
|
|
//pos := s.index('\r\n\r\n')
|
|
//if pos > -1 {
|
|
mut str_form := s//[pos..s.len]
|
|
str_form = str_form.replace('+', ' ')
|
|
words := str_form.split('&')
|
|
for word in words {
|
|
$if debug {
|
|
println('parse form keyval="$word"')
|
|
}
|
|
keyval := word.trim_space().split('=')
|
|
if keyval.len != 2 { continue }
|
|
key := keyval[0]
|
|
val := urllib.query_unescape(keyval[1]) or {
|
|
continue
|
|
}
|
|
$if debug {
|
|
println('http form "$key" => "$val"')
|
|
}
|
|
ctx.form[key] = val
|
|
}
|
|
//}
|
|
// todo: parse form-data and application/json
|
|
// ...
|
|
}
|
|
|
|
fn (mut ctx Context) scan_static_directory(directory_path, mount_path string) {
|
|
files := os.ls(directory_path) or { panic(err) }
|
|
|
|
if files.len > 0 {
|
|
for file in files {
|
|
|
|
if os.is_dir(file) {
|
|
ctx.scan_static_directory(directory_path + '/' + file, mount_path + '/' + file)
|
|
} else if file.contains('.') && ! file.starts_with('.') && ! file.ends_with('.') {
|
|
ext := os.file_ext(file)
|
|
|
|
// Rudimentary guard against adding files not in mime_types.
|
|
// Use serve_static directly to add non-standard mime types.
|
|
if ext in mime_types {
|
|
ctx.serve_static(mount_path + '/' + file, directory_path + '/' + file, mime_types[ext])
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn (mut ctx Context) handle_static(directory_path string) bool {
|
|
if ctx.done || ! os.exists(directory_path) {
|
|
return false
|
|
}
|
|
|
|
dir_path := directory_path.trim_space().trim_right('/')
|
|
mut mount_path := ''
|
|
|
|
if dir_path != '.' && os.is_dir(dir_path) {
|
|
// Mount point hygene, "./assets" => "/assets".
|
|
mount_path = '/' + dir_path.trim_left('.').trim('/')
|
|
}
|
|
|
|
ctx.scan_static_directory(dir_path, mount_path)
|
|
|
|
return true
|
|
}
|
|
|
|
|
|
pub fn (mut ctx Context) serve_static(url, file_path, mime_type string) {
|
|
ctx.static_files[url] = file_path
|
|
ctx.static_mime_types[url] = mime_type
|
|
}
|
|
|
|
pub fn (ctx &Context) ip() string {
|
|
// TODO make return ctx.conn.peer_ip() or { '' } work
|
|
res := ctx.conn.peer_ip() or { '' }
|
|
return res
|
|
}
|
|
|
|
pub fn (mut ctx Context) error(s string) {
|
|
ctx.form_error = s
|
|
}
|
|
|
|
|
|
/*
|
|
fn readall(conn net.Socket) string {
|
|
// read all message from socket
|
|
//printf("waitall=%d\n", C.MSG_WAITALL)
|
|
mut message := ''
|
|
buf := [1024]byte
|
|
for {
|
|
n := C.recv(conn.sockfd, buf, 1024, 0)
|
|
m := conn.crecv(buf, 1024)
|
|
message += string( byteptr(buf), m )
|
|
if message.len > max_http_post_size { break }
|
|
if n == m { break }
|
|
}
|
|
return message
|
|
}
|
|
*/
|
|
|
|
fn strip(s string) string {
|
|
// strip('\nabc\r\n') => 'abc'
|
|
return s.trim('\r\n')
|
|
}
|
|
|
|
pub fn not_found() Result {
|
|
return Result{}
|
|
}
|
|
|
|
fn filter(s string) string {
|
|
return s.replace_each([
|
|
'<', '<',
|
|
'"', '"',
|
|
'&', '&',
|
|
])
|
|
|
|
}
|
|
|
|
pub type RawHtml = string
|