7bd6bfe3409a571a9d51f2de3258924432213282
1 use std
::convert
::From
;
6 use std
::borrow
::BorrowMut
;
7 use std
::sync
::{Arc
, Mutex
};
10 use num_traits
::cast
::AsPrimitive
;
11 use percent_encoding
::percent_decode_str
;
12 use actix_web
::{middleware
::Logger
, get
, web
, App
, HttpServer
, HttpRequest
, HttpResponse
, Responder
, ResponseError
, Result
};
13 use actix_web
::body
::BoxBody
;
14 use actix_web
::http
::StatusCode
;
15 use image
::{ImageBuffer
, ColorType
, Rgb
, RgbImage
, write_buffer_with_format
};
16 use image
::ImageOutputFormat
::Png
;
17 use image
::imageops
::{FilterType
, overlay
, resize
};
18 use image
::error
::{LimitError
, LimitErrorKind
};
19 use actix_web
::cookie
::time
::OffsetDateTime
;
22 const TIMEAVATAR_SIZE_U32
: u32 = 6;
23 const TIMEAVATAR_SIZE_I64
: i64 = TIMEAVATAR_SIZE_U32
as i64;
25 macro_rules
! response_image
{
27 HttpResponse
::build(StatusCode
::OK
)
28 .content_type("image/png")
29 .body($cursor
.into
_inner
())
33 macro_rules
! extract_data
{
34 ($req
:expr
,$n
:expr
) => {
35 $req
.ur
i().path().split('
/'
).nth($n
).unwrap
()
39 macro_rules
! extract_header
{
40 ($req
:expr
,$header
:expr
) => {
41 match $req
.headers().get($header
) {
42 Some(header
) => header
.to_str().unwrap
_or
(""),
49 struct ImageError(image
::ImageError
);
52 fn dimension_error() -> ImageError
{
53 ImageError(image
::ImageError
::Limits(LimitError
::from_kind(LimitErrorKind
::DimensionError
)))
57 impl Display
for ImageError
{
58 fn fmt(&self, f
: &mut fmt
::Formatter
<'_
>) -> fmt
::Result
{
59 write
!(f
, "{}", &self.0)
63 impl ResponseError
for ImageError
{
64 fn status_code(&self) -> StatusCode
{
65 StatusCode
::INTERNAL_SERVER_ERROR
68 fn error_response(&self) -> HttpResponse
<BoxBody
> {
69 HttpResponse
::InternalServerError().body(format
!("{}\n", &self))
73 impl From
<image
::ImageError
> for ImageError
{
74 fn from(e
: image
::ImageError
) -> Self {
82 DimensionMismatch((u32, u32)),
83 ImageError(ImageError
)
86 impl Display
for CanvasError
{
87 fn fmt(&self, f
: &mut fmt
::Formatter
<'_
>) -> fmt
::Result
{
88 write
!(f
, "Canvas Error: see error_response() for more details")
92 impl ResponseError
for CanvasError
{
93 fn status_code(&self) -> StatusCode
{
95 CanvasError
::NotExists
=> StatusCode
::NOT_FOUND
,
96 CanvasError
::DimensionMismatch(_
) => StatusCode
::BAD_REQUEST
,
97 CanvasError
::ImageError(e
) => e
.status_code()
101 fn error_response(&self) -> HttpResponse
<BoxBody
> {
103 CanvasError
::NotExists
=> HttpResponse
::NotFound().body("Canvas does not exist."),
104 CanvasError
::DimensionMismatch(dim
) =>
105 HttpResponse
::BadRequest().body(format
!("Supplied dimensions don't match the dimensions of existing canvas {:?}.", dim
)),
106 CanvasError
::ImageError(e
) => e
.error_response()
111 impl From
<ImageError
> for CanvasError
{
112 fn from(e
: ImageError
) -> CanvasError
{
113 CanvasError
::ImageError(e
)
117 struct ToRgbIter
<'a
, T
> where T
: AsPrimitive
<u8> {
118 iter
: &'a
mut dyn Iterator
<Item
= T
>
121 impl<'a
, T
: AsPrimitive
<u8>> ToRgbIter
<'a
, T
> {
122 fn new(iter
: &'a
mut (dyn Iterator
<Item
= T
>)) -> ToRgbIter
<T
> {
127 impl<T
: AsPrimitive
<u8> + Zero
> Iterator
for ToRgbIter
<'_
, T
> {
129 fn next(&mut self) -> Option
<Rgb
<u8>> {
130 if let Some(r
) = self.iter
.next() {
131 let g
= self.iter
.next().unwrap
_or
_else
(T
::zero
);
132 let b
= self.iter
.next().unwrap
_or
_else
(T
::zero
);
133 Some(Rgb([r
.as_(), g
.as_(), b
.as_()]))
148 fn new(width
: u32, height
: u32) -> Canvas
{
149 Canvas
{ pen
: 0, img
: ImageBuffer
::new(width
, height
) }
152 /*fn from_image(img: RgbImage) -> Canvas {
153 Canvas { pen: 0, img }
156 fn replace(&self, img: RgbImage, pen: usize) -> Canvas {
162 fn advance_pen(mut self, offset
: usize) -> Canvas
{
163 //Canvas { pen: self.pen + offset, img: self.img }
165 self.pen
%= self.img
.width() as usize * self.img
.height() as usize;
170 struct Canvas0(Option
<Canvas
>);
171 struct Canvas1(Option
<Canvas
>);
172 struct Canvas2(Option
<Canvas
>);
174 #[get("/hello/{name}")]
175 async
fn greet(name
: web
::Path
<String
>, req
: HttpRequest
) -> impl Responder
{
176 println
!("{:?}", req
);
177 format
!("Hello {name}!\n{:?}", req
.headers().get("user-agent"))
180 fn rgb_encode_with_pen(img
: &mut RgbImage
, pen
: usize, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<usize, ImageError
> {
181 let mut pixels
= img
.pixels_mut().skip(pen
);
184 for sp
in ToRgbIter
::new(data
) {
185 let mut dp
= match pixels
.next() {
186 Some(pixel
) => pixel
,
188 pixels
= img
.pixels_mut().skip(0);
189 pixels
.next().ok_or_else(ImageError
::dimension_error
)?
199 fn rgb_encode_to_canvas(mut canvas
: Canvas
, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<Canvas
, CanvasError
> {
200 let counter
= rgb_encode_with_pen(&mut canvas
.img
, canvas
.pen
, data
)?
;
201 Ok(canvas
.advance_pen(counter
))
204 fn rgb_encode(mut img
: RgbImage
, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<RgbImage
, ImageError
> {
205 rgb_encode_with_pen(&mut img
, 0, data
)?
;
209 fn apply_to_canvas
<'a
, F
>(f
: F
, canvas_option
: &'a
mut Option
<Canvas
>, dimensions
: Option
<(u32, u32)>, data
: &str) -> Result
<&'a
mut Canvas
, CanvasError
>
210 where F
: Fn(Canvas
, &mut dyn Iterator
<Item
= u8>) -> Result
<Canvas
, CanvasError
>
212 let canvas
= match canvas_option
.take() {
213 Some(canvas
) => match dimensions
{
214 Some(dimensions
) => {
215 if dimensions
== canvas
.img
.dimensions() {
219 Err(CanvasError
::DimensionMismatch(canvas_option
.insert
(canvas
).img
.dimensions()))
225 None
=> match dimensions
{
226 Some((dim_x
, dim_y
)) =>
227 Ok(Canvas
::new(dim_x
, dim_y
)),
229 Err(CanvasError
::NotExists
)
233 Ok(canvas_option
.insert
(f(canvas
, percent_decode_str(data
).into
_iter
().borrow_mut())?
))
236 fn make_png(dim_x
: u32, dim_y
: u32, scale
: u32, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<Cursor
<Vec
<u8>>, ImageError
> {
237 // Image must not be larger than 1 megapixel
238 if dim_x
* dim_y
* scale
> 1048576 {
239 return Err(ImageError
::dimension_error())
242 let img
: RgbImage
= rgb_encode(ImageBuffer
::new(dim_x
, dim_y
), data
)?
;
243 let cursor
= image_to_cursor(img
, scale
)?
;
247 fn image_to_cursor(img
: RgbImage
, scale
: u32) -> Result
<Cursor
<Vec
<u8>>, ImageError
> {
248 let (dim_x
, dim_y
) = img
.dimensions();
249 let (dim_x
, dim_y
) = (dim_x
* scale
, dim_y
* scale
);
251 // Image must not be larger than 1 megapixel
252 if dim_x
* dim_y
> 1048576 {
253 return Err(ImageError
::dimension_error())
256 let mut cursor
= Cursor
::new(Vec
::new());
257 let img
= resize(&img
, dim_x
, dim_y
, FilterType
::Nearest
);
258 write_buffer_with_format(&mut cursor
, &img
, dim_x
, dim_y
, ColorType
::Rgb8
, Png
)?
;
263 #[get("/gen/0/{data}")]
264 async
fn img_gen0(req
: HttpRequest
) -> Result
<impl Responder
> {
265 let data
= extract_data
!(req
, 3);
266 let cursor
= make_png(32, 32, 16, percent_decode_str(data
).into
_iter
().borrow_mut())?
;
267 Ok(response_image
!(cursor
))
270 #[get("/gen/1/{dim_x}/{dim_y}/{scale}/{data}")]
271 async
fn img_gen1(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>) -> Result
<impl Responder
> {
272 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
273 let data
= extract_data
!(req
, 6);
274 let cursor
= make_png(dim_x
, dim_y
, scale
, percent_decode_str(data
).into
_iter
().borrow_mut())?
;
275 Ok(response_image
!(cursor
))
278 #[get("/gen/2/{dim_x}/{dim_y}/{scale}")]
279 async
fn img_gen2(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>) -> Result
<impl Responder
> {
280 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
281 let data
= extract_header
!(req
, "user-agent");
282 let cursor
= make_png(dim_x
, dim_y
, scale
, &mut data
.bytes())?
;
283 Ok(response_image
!(cursor
))
286 #[get("/gen/3/{scale}")]
287 async
fn img_gen3(req
: HttpRequest
, path
: web
::Path
<u32>) -> Result
<impl Responder
> {
288 let scale
= path
.into
_inner
();
289 let data
= extract_header
!(req
, "user-agent");
290 let rgbimg
: RgbImage
= rgb_encode(ImageBuffer
::new(TIMEAVATAR_SIZE_U32
, TIMEAVATAR_SIZE_U32
), &mut data
.bytes())?
;
291 let mut resimg
: RgbImage
= ImageBuffer
::new(60 * TIMEAVATAR_SIZE_U32
, 24 * TIMEAVATAR_SIZE_U32
);
292 let time
= OffsetDateTime
::now_utc().time();
293 let (hour
, minute
): (i64, i64) = (time
.hour().into
(), time
.minute().into
());
294 overlay(&mut resimg
, &rgbimg
, minute
* TIMEAVATAR_SIZE_I64
, hour
* TIMEAVATAR_SIZE_I64
);
295 let cursor
= image_to_cursor(resimg
, scale
)?
;
296 Ok(response_image
!(cursor
))
299 #[get("/pgen/0/{data}")]
300 async
fn img_pgen0(req
: HttpRequest
, canvas0
: web
::Data
<Arc
<Mutex
<Canvas0
>>>) -> Result
<impl Responder
> {
301 let data
= extract_data
!(req
, 3);
303 let img
: RgbImage
= ({
304 let canvas_option
= &mut *canvas0
.lock().unwrap
();
305 Ok(apply_to_canvas( |c
, d
| rgb_encode_to_canvas(c
, d
), &mut canvas_option
.0, None
, data
)?
.img
.clone())
306 } as Result
<RgbImage
, CanvasError
>)?
;
307 let cursor
= image_to_cursor(img
, scale
)?
;
308 Ok(response_image
!(cursor
))
311 #[get("/pgen/1/{dim_x}/{dim_y}/{scale}/{data}")]
312 async
fn img_pgen1(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>, canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>) -> Result
<impl Responder
> {
313 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
314 let data
= extract_data
!(req
, 6);
315 let img
: RgbImage
= ({
316 let canvas_option
= &mut *canvas1
.lock().unwrap
();
317 Ok(apply_to_canvas( |c
, d
| rgb_encode_to_canvas(c
, d
), &mut canvas_option
.0, Some((dim_x
, dim_y
)), data
)?
.img
.clone())
318 } as Result
<RgbImage
, CanvasError
>)?
;
319 let cursor
= image_to_cursor(img
, scale
)?
;
320 Ok(response_image
!(cursor
))
323 #[get("/pgen/2/{dim_x}/{dim_y}/{scale}")]
324 async
fn img_pgen2(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>, canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>) -> Result
<impl Responder
> {
325 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
326 let data
= extract_header
!(req
, "user-agent");
327 let img
: RgbImage
= ({
328 let canvas_option
= &mut *canvas1
.lock().unwrap
();
329 Ok(apply_to_canvas( |c
, d
| rgb_encode_to_canvas(c
, d
), &mut canvas_option
.0, Some((dim_x
, dim_y
)), data
)?
.img
.clone())
330 } as Result
<RgbImage
, CanvasError
>)?
;
331 let cursor
= image_to_cursor(img
, scale
)?
;
332 Ok(response_image
!(cursor
))
335 #[get("/pgen/3/{scale}")]
336 async
fn img_pgen3(req
: HttpRequest
, path
: web
::Path
<u32>, canvas2
: web
::Data
<Arc
<Mutex
<Canvas2
>>>) -> Result
<impl Responder
> {
337 let scale
= path
.into
_inner
();
338 let data
= extract_header
!(req
, "user-agent");
339 let time
= OffsetDateTime
::now_utc().time();
340 let (hour
, minute
): (i64, i64) = (time
.hour().into
(), time
.minute().into
());
341 let rgbimg
: RgbImage
= rgb_encode(ImageBuffer
::new(TIMEAVATAR_SIZE_U32
, TIMEAVATAR_SIZE_U32
), &mut data
.bytes())?
;
342 let resimg
: RgbImage
= ({
343 let canvas_option
= &mut *canvas2
.lock().unwrap
();
344 let mut canvas
= match canvas_option
.0.take() {
345 Some(canvas
) => canvas
,
346 None
=> Canvas
::new(60 * TIMEAVATAR_SIZE_U32
, 24 * TIMEAVATAR_SIZE_U32
)
348 overlay(&mut canvas
.img
, &rgbimg
, minute
* TIMEAVATAR_SIZE_I64
, hour
* TIMEAVATAR_SIZE_I64
);
349 Ok(canvas_option
.0.insert
(canvas
).img
.clone())
350 } as Result
<RgbImage
, CanvasError
>)?
;
351 let cursor
= image_to_cursor(resimg
, scale
)?
;
352 Ok(response_image
!(cursor
))
355 #[get("/pdrop/{canvas_id}")]
356 async
fn pdrop(canvas_id
: web
::Path
<u8>,
357 canvas0
: web
::Data
<Arc
<Mutex
<Canvas0
>>>,
358 canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>,
359 canvas2
: web
::Data
<Arc
<Mutex
<Canvas2
>>>) -> Result
<impl Responder
> {
361 let canvas_id
= canvas_id
.into
_inner
();
363 0 => canvas0
.lock().unwrap
().0.take(),
364 1 => canvas1
.lock().unwrap
().0.take(),
365 2 => canvas2
.lock().unwrap
().0.take(),
367 }.ok_or(CanvasError
::NotExists
)?
;
368 Ok(HttpResponse
::build(StatusCode
::OK
)
369 .body(format
!("Canvas {} dropped.", canvas_id
)))
373 #[actix_web::main] // or #[tokio::main]
374 async
fn main() -> std
::io
::Result
<()> {
375 env_logger
::builder()
376 .filter
_mod
ule
("actix_web", LevelFilter
::Info
)
380 let listenaddress
= env
::args().nth(1).unwrap
_or
_else
(|| "127.0.0.1:8080".to_string());
381 let canvas0
= Arc
::new(Mutex
::new(Canvas0(Some(Canvas
::new(32, 32)))));
382 let canvas1
= Arc
::new(Mutex
::new(Canvas1(None
)));
383 let canvas2
= Arc
::new(Mutex
::new(Canvas2(None
)));
385 HttpServer
::new(move || {
387 .wrap(Logger
::default())
398 .app_data(web
::Data
::new(canvas0
.clone()))
399 .app_data(web
::Data
::new(canvas1
.clone()))
400 .app_data(web
::Data
::new(canvas2
.clone()))
402 .bind(listenaddress
)?