aadb29652d57d8429f50ea4de8b27789c72efd64
1 use std
::convert
::From
;
6 use std
::borrow
::BorrowMut
;
7 use std
::sync
::{Arc
, Mutex
};
9 use num_traits
::cast
::AsPrimitive
;
10 use percent_encoding
::percent_decode_str
;
11 use actix_web
::{get
, web
, App
, HttpServer
, HttpRequest
, HttpResponse
, Responder
, ResponseError
, Result
};
12 use actix_web
::body
::BoxBody
;
13 use actix_web
::http
::StatusCode
;
14 use image
::{ImageBuffer
, ColorType
, Rgb
, RgbImage
, write_buffer_with_format
};
15 use image
::ImageOutputFormat
::Png
;
16 use image
::imageops
::{FilterType
, overlay
, resize
};
17 use image
::error
::{LimitError
, LimitErrorKind
};
18 use actix_web
::cookie
::time
::OffsetDateTime
;
21 const TIMEAVATAR_SIZE_U32
: u32 = 6;
22 const TIMEAVATAR_SIZE_I64
: i64 = TIMEAVATAR_SIZE_U32
as i64;
25 struct ImageError(image
::ImageError
);
28 fn dimension_error() -> ImageError
{
29 ImageError(image
::ImageError
::Limits(LimitError
::from_kind(LimitErrorKind
::DimensionError
)))
33 impl Display
for ImageError
{
34 fn fmt(&self, f
: &mut fmt
::Formatter
<'_
>) -> fmt
::Result
{
35 write
!(f
, "{}", &self.0)
39 impl ResponseError
for ImageError
{
40 fn status_code(&self) -> StatusCode
{
41 StatusCode
::INTERNAL_SERVER_ERROR
44 fn error_response(&self) -> HttpResponse
<BoxBody
> {
45 HttpResponse
::InternalServerError().body(format
!("{}\n", &self))
52 DimensionMismatch((u32, u32)),
53 ImageError(ImageError
)
56 impl Display
for CanvasError
{
57 fn fmt(&self, f
: &mut fmt
::Formatter
<'_
>) -> fmt
::Result
{
58 write
!(f
, "Canvas Error: see error_response() for more details")
62 impl ResponseError
for CanvasError
{
63 fn status_code(&self) -> StatusCode
{
65 CanvasError
::NotExists
=> StatusCode
::NOT_FOUND
,
66 CanvasError
::DimensionMismatch(_
) => StatusCode
::BAD_REQUEST
,
67 CanvasError
::ImageError(e
) => e
.status_code()
71 fn error_response(&self) -> HttpResponse
<BoxBody
> {
73 CanvasError
::NotExists
=> HttpResponse
::NotFound().body("Canvas does not exist."),
74 CanvasError
::DimensionMismatch(dim
) =>
75 HttpResponse
::BadRequest().body(format
!("Supplied dimensions don't match the dimensions of existing canvas {:?}.", dim
)),
76 CanvasError
::ImageError(e
) => e
.error_response()
81 impl From
<ImageError
> for CanvasError
{
82 fn from(e
: ImageError
) -> CanvasError
{
83 CanvasError
::ImageError(e
)
87 struct ToRgbIter
<'a
, T
> where T
: AsPrimitive
<u8> {
88 iter
: &'a
mut dyn Iterator
<Item
= T
>
91 impl<'a
, T
: AsPrimitive
<u8>> ToRgbIter
<'a
, T
> {
92 fn new(iter
: &'a
mut (dyn Iterator
<Item
= T
>)) -> ToRgbIter
<T
> {
97 impl<T
: AsPrimitive
<u8> + Zero
> Iterator
for ToRgbIter
<'_
, T
> {
99 fn next(&mut self) -> Option
<Rgb
<u8>> {
100 if let Some(r
) = self.iter
.next() {
101 let g
= self.iter
.next().unwrap
_or
_else
(T
::zero
);
102 let b
= self.iter
.next().unwrap
_or
_else
(T
::zero
);
103 Some(Rgb([r
.as_(), g
.as_(), b
.as_()]))
111 fn to_imageresult
<T
> (result
: Result
<T
, image
::ImageError
>) -> Result
<T
, ImageError
> {
114 Err(e
) => Err(ImageError(e
))
118 fn to_canvasresult
<T
: std
::fmt
::Debug
> (result
: Result
<T
, ImageError
>) -> Result
<T
, CanvasError
> {
121 Err(e
) => Err(CanvasError
::ImageError(e
))
132 fn new(width
: u32, height
: u32) -> Canvas
{
133 Canvas
{ pen
: 0, img
: ImageBuffer
::new(width
, height
) }
136 fn from_image(img
: RgbImage
) -> Canvas
{
137 Canvas
{ pen
: 0, img
}
140 /*fn replace(&self, img: RgbImage, pen: usize) -> Canvas {
146 fn advance_pen(mut self, offset
: usize) -> Canvas
{
147 //Canvas { pen: self.pen + offset, img: self.img }
149 self.pen
%= self.img
.width() as usize * self.img
.height() as usize;
154 struct Canvas0(Option
<Canvas
>);
155 struct Canvas1(Option
<Canvas
>);
156 struct Canvas2(Option
<Canvas
>);
158 #[get("/hello/{name}")]
159 async
fn greet(name
: web
::Path
<String
>, req
: HttpRequest
) -> impl Responder
{
160 println
!("{:?}", req
);
161 format
!("Hello {name}!\n{:?}", req
.headers().get("user-agent"))
164 fn rgb_encode_to_canvas(mut canvas
: Canvas
, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<Canvas
, ImageError
> {
165 let mut pixels
= canvas
.img
.pixels_mut().skip(canvas
.pen
);
168 for sp
in ToRgbIter
::new(data
) {
169 let mut dp
= match pixels
.next() {
170 Some(pixel
) => pixel
,
172 pixels
= canvas
.img
.pixels_mut().skip(0);
173 pixels
.next().ok_or_else(ImageError
::dimension_error
)?
180 Ok(canvas
.advance_pen(counter
))
183 fn rgb_encode(img
: RgbImage
, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<RgbImage
, ImageError
> {
184 Ok(rgb_encode_to_canvas(Canvas
::from_image(img
), data
)?
.img
)
187 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
>
188 where F
: Fn(Canvas
, &mut dyn Iterator
<Item
= u8>) -> Result
<Canvas
, CanvasError
>
190 let canvas
= match canvas_option
.take() {
191 Some(canvas
) => match dimensions
{
192 Some(dimensions
) => {
193 if dimensions
== canvas
.img
.dimensions() {
197 Err(CanvasError
::DimensionMismatch(canvas_option
.insert
(canvas
).img
.dimensions()))
203 None
=> match dimensions
{
204 Some((dim_x
, dim_y
)) =>
205 Ok(Canvas
::new(dim_x
, dim_y
)),
207 Err(CanvasError
::NotExists
)
211 Ok(canvas_option
.insert
(f(canvas
, percent_decode_str(data
).into
_iter
().borrow_mut())?
))
214 fn make_png(dim_x
: u32, dim_y
: u32, scale
: u32, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<Cursor
<Vec
<u8>>, ImageError
> {
215 // Image must not be larger than 1 megapixel
216 if dim_x
* dim_y
* scale
> 1048576 {
217 return Err(ImageError
::dimension_error())
220 let img
: RgbImage
= rgb_encode(ImageBuffer
::new(dim_x
, dim_y
), data
)?
;
221 let cursor
= image_to_cursor(img
, scale
)?
;
225 fn image_to_cursor(img
: RgbImage
, scale
: u32) -> Result
<Cursor
<Vec
<u8>>, ImageError
> {
226 let (dim_x
, dim_y
) = img
.dimensions();
227 let (dim_x
, dim_y
) = (dim_x
* scale
, dim_y
* scale
);
229 // Image must not be larger than 1 megapixel
230 if dim_x
* dim_y
> 1048576 {
231 return Err(ImageError
::dimension_error())
234 let mut cursor
= Cursor
::new(Vec
::new());
235 let img
= resize(&img
, dim_x
, dim_y
, FilterType
::Nearest
);
236 to_imageresult(write_buffer_with_format(&mut cursor
, &img
, dim_x
, dim_y
, ColorType
::Rgb8
, Png
))?
;
241 #[get("/gen/0/{data}")]
242 async
fn img_gen0(req
: HttpRequest
) -> Result
<impl Responder
> {
243 let data
= req
.ur
i().path().split('
/'
).nth(3).unwrap
();
244 let cursor
= make_png(32, 32, 16, percent_decode_str(data
).into
_iter
().borrow_mut())?
;
245 Ok(HttpResponse
::build(StatusCode
::OK
)
246 .content_type("image/png")
247 .body(cursor
.into
_inner
()))
250 #[get("/gen/1/{dim_x}/{dim_y}/{scale}/{data}")]
251 async
fn img_gen1(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>) -> Result
<impl Responder
> {
252 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
253 let data
= req
.ur
i().path().split('
/'
).nth(6).unwrap
();
254 let cursor
= make_png(dim_x
, dim_y
, scale
, percent_decode_str(data
).into
_iter
().borrow_mut())?
;
255 Ok(HttpResponse
::build(StatusCode
::OK
)
256 .content_type("image/png")
257 .body(cursor
.into
_inner
()))
260 #[get("/gen/2/{dim_x}/{dim_y}/{scale}")]
261 async
fn img_gen2(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>) -> Result
<impl Responder
> {
262 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
263 let data
= match req
.headers().get("user-agent") {
264 Some(header
) => header
.to_str().unwrap
_or
(""),
267 let cursor
= make_png(dim_x
, dim_y
, scale
, &mut data
.bytes())?
;
268 Ok(HttpResponse
::build(StatusCode
::OK
)
269 .content_type("image/png")
270 .body(cursor
.into
_inner
()))
273 #[get("/gen/3/{scale}")]
274 async
fn img_gen3(req
: HttpRequest
, path
: web
::Path
<u32>) -> Result
<impl Responder
> {
275 let scale
= path
.into
_inner
();
276 let data
= match req
.headers().get("user-agent") {
277 Some(header
) => header
.to_str().unwrap
_or
(""),
280 let rgbimg
: RgbImage
= rgb_encode(ImageBuffer
::new(TIMEAVATAR_SIZE_U32
, TIMEAVATAR_SIZE_U32
), &mut data
.bytes())?
;
281 let mut resimg
: RgbImage
= ImageBuffer
::new(60 * TIMEAVATAR_SIZE_U32
, 24 * TIMEAVATAR_SIZE_U32
);
282 let time
= OffsetDateTime
::now_utc().time();
283 let (hour
, minute
): (i64, i64) = (time
.hour().into
(), time
.minute().into
());
284 overlay(&mut resimg
, &rgbimg
, minute
* TIMEAVATAR_SIZE_I64
, hour
* TIMEAVATAR_SIZE_I64
);
285 let cursor
= image_to_cursor(resimg
, scale
)?
;
286 Ok(HttpResponse
::build(StatusCode
::OK
)
287 .content_type("image/png")
288 .body(cursor
.into
_inner
()))
291 #[get("/pgen/0/{data}")]
292 async
fn img_pgen0(req
: HttpRequest
, canvas0
: web
::Data
<Arc
<Mutex
<Canvas0
>>>) -> Result
<impl Responder
> {
293 let data
= req
.ur
i().path().split('
/'
).nth(3).unwrap
();
295 let img
: RgbImage
= ({
296 let canvas_option
= &mut *canvas0
.lock().unwrap
();
297 Ok(apply_to_canvas( |c
, d
| to_canvasresult(rgb_encode_to_canvas(c
, d
)), &mut canvas_option
.0, None
, data
)?
.img
.clone())
298 } as Result
<RgbImage
, CanvasError
>)?
;
299 let cursor
= image_to_cursor(img
, scale
)?
;
300 Ok(HttpResponse
::build(StatusCode
::OK
)
301 .content_type("image/png")
302 .body(cursor
.into
_inner
()))
305 #[get("/pgen/1/{dim_x}/{dim_y}/{scale}/{data}")]
306 async
fn img_pgen1(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>, canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>) -> Result
<impl Responder
> {
307 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
308 let data
= req
.ur
i().path().split('
/'
).nth(6).unwrap
();
309 let img
: RgbImage
= ({
310 let canvas_option
= &mut *canvas1
.lock().unwrap
();
311 Ok(apply_to_canvas( |c
, d
| to_canvasresult(rgb_encode_to_canvas(c
, d
)), &mut canvas_option
.0, Some((dim_x
, dim_y
)), data
)?
.img
.clone())
312 } as Result
<RgbImage
, CanvasError
>)?
;
313 let cursor
= image_to_cursor(img
, scale
)?
;
314 Ok(HttpResponse
::build(StatusCode
::OK
)
315 .content_type("image/png")
316 .body(cursor
.into
_inner
()))
319 #[get("/pgen/2/{dim_x}/{dim_y}/{scale}")]
320 async
fn img_pgen2(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>, canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>) -> Result
<impl Responder
> {
321 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
322 let data
= match req
.headers().get("user-agent") {
323 Some(header
) => header
.to_str().unwrap
_or
(""),
326 let img
: RgbImage
= ({
327 let canvas_option
= &mut *canvas1
.lock().unwrap
();
328 Ok(apply_to_canvas( |c
, d
| to_canvasresult(rgb_encode_to_canvas(c
, d
)), &mut canvas_option
.0, Some((dim_x
, dim_y
)), data
)?
.img
.clone())
329 } as Result
<RgbImage
, CanvasError
>)?
;
330 let cursor
= image_to_cursor(img
, scale
)?
;
331 Ok(HttpResponse
::build(StatusCode
::OK
)
332 .content_type("image/png")
333 .body(cursor
.into
_inner
()))
336 #[get("/pgen/3/{scale}")]
337 async
fn img_pgen3(req
: HttpRequest
, path
: web
::Path
<u32>, canvas2
: web
::Data
<Arc
<Mutex
<Canvas2
>>>) -> Result
<impl Responder
> {
338 let scale
= path
.into
_inner
();
339 let data
= match req
.headers().get("user-agent") {
340 Some(header
) => header
.to_str().unwrap
_or
(""),
343 let time
= OffsetDateTime
::now_utc().time();
344 let (hour
, minute
): (i64, i64) = (time
.hour().into
(), time
.minute().into
());
345 let rgbimg
: RgbImage
= rgb_encode(ImageBuffer
::new(TIMEAVATAR_SIZE_U32
, TIMEAVATAR_SIZE_U32
), &mut data
.bytes())?
;
346 let resimg
: RgbImage
= ({
347 let canvas_option
= &mut *canvas2
.lock().unwrap
();
348 let mut canvas
= match canvas_option
.0.take() {
349 Some(canvas
) => canvas
,
350 None
=> Canvas
::new(60 * TIMEAVATAR_SIZE_U32
, 24 * TIMEAVATAR_SIZE_U32
)
352 overlay(&mut canvas
.img
, &rgbimg
, minute
* TIMEAVATAR_SIZE_I64
, hour
* TIMEAVATAR_SIZE_I64
);
353 Ok(canvas_option
.0.insert
(canvas
).img
.clone())
354 } as Result
<RgbImage
, CanvasError
>)?
;
355 let cursor
= image_to_cursor(resimg
, scale
)?
;
356 Ok(HttpResponse
::build(StatusCode
::OK
)
357 .content_type("image/png")
358 .body(cursor
.into
_inner
()))
361 #[get("/pdrop/{canvas_id}")]
362 async
fn pdrop(canvas_id
: web
::Path
<u8>,
363 canvas0
: web
::Data
<Arc
<Mutex
<Canvas0
>>>,
364 canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>,
365 canvas2
: web
::Data
<Arc
<Mutex
<Canvas2
>>>) -> Result
<impl Responder
> {
367 let canvas_id
= canvas_id
.into
_inner
();
369 0 => canvas0
.lock().unwrap
().0.take(),
370 1 => canvas1
.lock().unwrap
().0.take(),
371 2 => canvas2
.lock().unwrap
().0.take(),
373 }.ok_or(CanvasError
::NotExists
)?
;
374 Ok(HttpResponse
::build(StatusCode
::OK
)
375 .body(format
!("Canvas {} dropped.", canvas_id
)))
379 #[actix_web::main] // or #[tokio::main]
380 async
fn main() -> std
::io
::Result
<()> {
382 let listenaddress
= env
::args().nth(1).unwrap
_or
_else
(|| "127.0.0.1:8080".to_string());
383 let canvas0
= Arc
::new(Mutex
::new(Canvas0(Some(Canvas
::new(32, 32)))));
384 let canvas1
= Arc
::new(Mutex
::new(Canvas1(None
)));
385 let canvas2
= Arc
::new(Mutex
::new(Canvas2(None
)));
386 HttpServer
::new(move || {
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
)?