1 use std
::f32::consts
::PI
;
2 use std
::convert
::From
;
7 use std
::borrow
::BorrowMut
;
8 use std
::sync
::{Arc
, Mutex
};
9 use log
::{debug
, LevelFilter
};
11 use num_traits
::cast
::AsPrimitive
;
12 use percent_encoding
::percent_decode_str
;
13 use actix_web
::{middleware
::Logger
, get
, web
, App
, HttpServer
, HttpRequest
, HttpResponse
, Responder
, ResponseError
, Result
};
14 use actix_web
::body
::BoxBody
;
15 use actix_web
::http
::StatusCode
;
16 use actix_web
::cookie
::time
::OffsetDateTime
;
17 use image
::{ImageBuffer
, ColorType
, Rgb
, RgbImage
, write_buffer_with_format
};
18 use image
::ImageOutputFormat
::Png
;
19 use image
::imageops
::{FilterType
, overlay
, resize
};
20 use image
::error
::{LimitError
, LimitErrorKind
};
23 const TIMEAVATAR_SIZE_U32
: u32 = 6;
24 const TIMEAVATAR_SIZE_I64
: i64 = TIMEAVATAR_SIZE_U32
as i64;
26 macro_rules
! response_image
{
28 HttpResponse
::build(StatusCode
::OK
)
29 .content_type("image/png")
30 .body($cursor
.into
_inner
())
34 macro_rules
! extract_data
{
35 ($req
:expr
,$n
:expr
) => {
36 $req
.ur
i().path().split('
/'
).nth($n
).unwrap
()
40 macro_rules
! extract_header
{
41 ($req
:expr
,$header
:expr
) => {
42 match $req
.headers().get($header
) {
43 Some(header
) => header
.to_str().unwrap
_or
(""),
50 struct ImageError(image
::ImageError
);
53 fn dimension_error() -> ImageError
{
54 ImageError(image
::ImageError
::Limits(LimitError
::from_kind(LimitErrorKind
::DimensionError
)))
58 impl Display
for ImageError
{
59 fn fmt(&self, f
: &mut fmt
::Formatter
<'_
>) -> fmt
::Result
{
60 write
!(f
, "{}", &self.0)
64 impl ResponseError
for ImageError
{
65 fn status_code(&self) -> StatusCode
{
66 StatusCode
::INTERNAL_SERVER_ERROR
69 fn error_response(&self) -> HttpResponse
<BoxBody
> {
70 HttpResponse
::InternalServerError().body(format
!("{}\n", &self))
74 impl From
<image
::ImageError
> for ImageError
{
75 fn from(e
: image
::ImageError
) -> Self {
83 DimensionMismatch((u32, u32)),
84 ImageError(ImageError
)
87 impl Display
for CanvasError
{
88 fn fmt(&self, f
: &mut fmt
::Formatter
<'_
>) -> fmt
::Result
{
89 write
!(f
, "Canvas Error: see error_response() for more details")
93 impl ResponseError
for CanvasError
{
94 fn status_code(&self) -> StatusCode
{
96 CanvasError
::NotExists
=> StatusCode
::NOT_FOUND
,
97 CanvasError
::DimensionMismatch(_
) => StatusCode
::BAD_REQUEST
,
98 CanvasError
::ImageError(e
) => e
.status_code()
102 fn error_response(&self) -> HttpResponse
<BoxBody
> {
104 CanvasError
::NotExists
=> HttpResponse
::NotFound().body("Canvas does not exist."),
105 CanvasError
::DimensionMismatch(dim
) =>
106 HttpResponse
::BadRequest().body(format
!("Supplied dimensions don't match the dimensions of existing canvas {:?}.", dim
)),
107 CanvasError
::ImageError(e
) => e
.error_response()
112 impl From
<ImageError
> for CanvasError
{
113 fn from(e
: ImageError
) -> CanvasError
{
114 CanvasError
::ImageError(e
)
118 struct ToRgbIter
<'a
, T
> where T
: AsPrimitive
<u8> {
119 iter
: &'a
mut dyn Iterator
<Item
= T
>
122 impl<'a
, T
: AsPrimitive
<u8>> ToRgbIter
<'a
, T
> {
123 fn new(iter
: &'a
mut (dyn Iterator
<Item
= T
>)) -> ToRgbIter
<T
> {
128 impl<T
: AsPrimitive
<u8> + Zero
> Iterator
for ToRgbIter
<'_
, T
> {
130 fn next(&mut self) -> Option
<Rgb
<u8>> {
131 if let Some(r
) = self.iter
.next() {
132 let g
= self.iter
.next().unwrap
_or
_else
(T
::zero
);
133 let b
= self.iter
.next().unwrap
_or
_else
(T
::zero
);
134 Some(Rgb([r
.as_(), g
.as_(), b
.as_()]))
149 fn new(width
: u32, height
: u32) -> Canvas
{
150 Canvas
{ pen
: 0, img
: ImageBuffer
::new(width
, height
) }
153 /*fn from_image(img: RgbImage) -> Canvas {
154 Canvas { pen: 0, img }
157 fn replace(&self, img: RgbImage, pen: usize) -> Canvas {
163 fn advance_pen(mut self, offset
: usize) -> Canvas
{
164 //Canvas { pen: self.pen + offset, img: self.img }
166 self.pen
%= self.img
.width() as usize * self.img
.height() as usize;
171 struct Canvas0(Option
<Canvas
>);
172 struct Canvas1(Option
<Canvas
>);
173 struct Canvas2(Option
<Canvas
>);
175 #[get("/hello/{name}")]
176 async
fn greet(name
: web
::Path
<String
>, req
: HttpRequest
) -> impl Responder
{
177 println
!("{:?}", req
);
178 format
!("Hello {name}!\n{:?}", req
.headers().get("user-agent"))
181 fn rgb_encode_with_pen(img
: &mut RgbImage
, pen
: usize, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<usize, ImageError
> {
182 let mut pixels
= img
.pixels_mut().skip(pen
);
185 for sp
in ToRgbIter
::new(data
) {
186 let mut dp
= match pixels
.next() {
187 Some(pixel
) => pixel
,
189 pixels
= img
.pixels_mut().skip(0);
190 pixels
.next().ok_or_else(ImageError
::dimension_error
)?
200 fn rgb_encode_to_canvas(mut canvas
: Canvas
, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<Canvas
, CanvasError
> {
201 let counter
= rgb_encode_with_pen(&mut canvas
.img
, canvas
.pen
, data
)?
;
202 Ok(canvas
.advance_pen(counter
))
205 fn rgb_encode(mut img
: RgbImage
, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<RgbImage
, ImageError
> {
206 rgb_encode_with_pen(&mut img
, 0, data
)?
;
210 fn sine_encode(mut img
: RgbImage
, wave_offset
: (u32, u32), amplitude
: f32, freq_base
: f32, run
: u32, wave_color
: Rgb
<u8>,
211 data
: &mut dyn Iterator
<Item
= u8>) -> Result
<RgbImage
, ImageError
>
213 let run
: f32 = run
as f32;
214 let (wave_offset_x
, wave_offset_y
) = wave_offset
;
215 let (wave_offset_x
, wave_offset_y
) = (wave_offset_x
as f32, wave_offset_y
as f32);
216 let signal
= &mut data
.peekable();
217 let mut x
: f32 = wave_offset_x
as f32;
218 let max_x
: f32 = (img
.width() - 1) as f32;
219 let max_y
: f32 = img
.height() as f32;
220 while signal
.peek().is
_some
() && (x
< max_x
) {
222 let s
= signal
.next().unwrap
_or
(0);
223 while ((x
- px
) < run
) && (x
< max_x
) {
225 (2.0 * PI
* freq_base
* x
* s
as f32).sin() * amplitude
+ wave_offset_y
227 else { wave_offset_y
};
229 if (y
> 0.0) && (y
< max_y
) {
230 img
.put_pixel(x
as u32, y
as u32, wave_color
);
237 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
>
238 where F
: Fn(Canvas
, &mut dyn Iterator
<Item
= u8>) -> Result
<Canvas
, CanvasError
>
240 let canvas
= match canvas_option
.take() {
241 Some(canvas
) => match dimensions
{
242 Some(dimensions
) => {
243 if dimensions
== canvas
.img
.dimensions() {
247 Err(CanvasError
::DimensionMismatch(canvas_option
.insert
(canvas
).img
.dimensions()))
253 None
=> match dimensions
{
254 Some((dim_x
, dim_y
)) =>
255 Ok(Canvas
::new(dim_x
, dim_y
)),
257 Err(CanvasError
::NotExists
)
261 Ok(canvas_option
.insert
(f(canvas
, percent_decode_str(data
).into
_iter
().borrow_mut())?
))
264 fn make_png(dim_x
: u32, dim_y
: u32, scale
: u32, data
: &mut dyn Iterator
<Item
= u8>) -> Result
<Cursor
<Vec
<u8>>, ImageError
> {
265 // Image must not be larger than 1 megapixel
266 if dim_x
* dim_y
* scale
> 1048576 {
267 return Err(ImageError
::dimension_error())
270 let img
: RgbImage
= rgb_encode(ImageBuffer
::new(dim_x
, dim_y
), data
)?
;
271 let cursor
= image_to_cursor(img
, scale
)?
;
275 fn image_to_cursor(img
: RgbImage
, scale
: u32) -> Result
<Cursor
<Vec
<u8>>, ImageError
> {
276 let (dim_x
, dim_y
) = img
.dimensions();
277 let (dim_x
, dim_y
) = (dim_x
* scale
, dim_y
* scale
);
279 // Image must not be larger than 1 megapixel
280 if dim_x
* dim_y
> 1048576 {
281 return Err(ImageError
::dimension_error())
284 let mut cursor
= Cursor
::new(Vec
::new());
285 let img
= resize(&img
, dim_x
, dim_y
, FilterType
::Nearest
);
286 write_buffer_with_format(&mut cursor
, &img
, dim_x
, dim_y
, ColorType
::Rgb8
, Png
)?
;
291 #[get("/gen/0/{data}")]
292 async
fn img_gen0(req
: HttpRequest
) -> Result
<impl Responder
> {
293 let data
= extract_data
!(req
, 3);
294 let cursor
= make_png(32, 32, 16, percent_decode_str(data
).into
_iter
().borrow_mut())?
;
295 Ok(response_image
!(cursor
))
298 #[get("/gen/1/{dim_x}/{dim_y}/{scale}/{data}")]
299 async
fn img_gen1(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>) -> Result
<impl Responder
> {
300 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
301 let data
= extract_data
!(req
, 6);
302 let cursor
= make_png(dim_x
, dim_y
, scale
, percent_decode_str(data
).into
_iter
().borrow_mut())?
;
303 Ok(response_image
!(cursor
))
306 #[get("/gen/2/{dim_x}/{dim_y}/{scale}")]
307 async
fn img_gen2(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>) -> Result
<impl Responder
> {
308 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
309 let data
= extract_header
!(req
, "user-agent");
310 let cursor
= make_png(dim_x
, dim_y
, scale
, &mut data
.bytes())?
;
311 Ok(response_image
!(cursor
))
314 #[get("/gen/3/{scale}")]
315 async
fn img_gen3(req
: HttpRequest
, path
: web
::Path
<u32>) -> Result
<impl Responder
> {
316 let scale
= path
.into
_inner
();
317 let data
= extract_header
!(req
, "user-agent");
318 let rgbimg
: RgbImage
= rgb_encode(ImageBuffer
::new(TIMEAVATAR_SIZE_U32
, TIMEAVATAR_SIZE_U32
), &mut data
.bytes())?
;
319 let mut resimg
: RgbImage
= ImageBuffer
::new(60 * TIMEAVATAR_SIZE_U32
, 24 * TIMEAVATAR_SIZE_U32
);
320 let time
= OffsetDateTime
::now_utc().time();
321 let (hour
, minute
): (i64, i64) = (time
.hour().into
(), time
.minute().into
());
322 overlay(&mut resimg
, &rgbimg
, minute
* TIMEAVATAR_SIZE_I64
, hour
* TIMEAVATAR_SIZE_I64
);
323 let cursor
= image_to_cursor(resimg
, scale
)?
;
324 Ok(response_image
!(cursor
))
327 #[get("/gen/4/{dim_x}/{dim_y}/{scale}/{wave_offset_x}/{wave_offset_y}/{amplitude}/{freq}/{run}/{wave_color}/{data}")]
328 #[allow(clippy::type_complexity)]
329 async
fn img_gen4(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32, u32, u32, f32, f32, u32)>) -> Result
<impl Responder
> {
330 let (dim_x
, dim_y
, scale
, wave_offset_x
, wave_offset_y
, amplitude
, freq_base
, run
) = path
.into
_inner
();
331 let freq_base
= freq_base
/ 1000.0;
332 let wave_color
= extract_data
!(req
, 11);
333 debug
!("Wave color input: {:?}", wave_color
);
334 let wave_color
= ToRgbIter
::new(&mut percent_decode_str(wave_color
)).next().unwrap
_or
(Rgb([255, 255, 255]));
335 debug
!("Decoded color: {:?}", wave_color
);
336 let signal
= &mut percent_decode_str(extract_data
!(req
, 12));
337 let resimg
= sine_encode(ImageBuffer
::new(dim_x
, dim_y
), (wave_offset_x
, wave_offset_y
), amplitude
, freq_base
, run
, wave_color
, signal
)?
;
338 let cursor
= image_to_cursor(resimg
, scale
)?
;
339 Ok(response_image
!(cursor
))
342 #[get("/pgen/0/{data}")]
343 async
fn img_pgen0(req
: HttpRequest
, canvas0
: web
::Data
<Arc
<Mutex
<Canvas0
>>>) -> Result
<impl Responder
> {
344 let data
= extract_data
!(req
, 3);
346 let img
: RgbImage
= ({
347 let canvas_option
= &mut *canvas0
.lock().unwrap
();
348 Ok(apply_to_canvas( |c
, d
| rgb_encode_to_canvas(c
, d
), &mut canvas_option
.0, None
, data
)?
.img
.clone())
349 } as Result
<RgbImage
, CanvasError
>)?
;
350 let cursor
= image_to_cursor(img
, scale
)?
;
351 Ok(response_image
!(cursor
))
354 #[get("/pgen/1/{dim_x}/{dim_y}/{scale}/{data}")]
355 async
fn img_pgen1(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>, canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>) -> Result
<impl Responder
> {
356 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
357 let data
= extract_data
!(req
, 6);
358 let img
: RgbImage
= ({
359 let canvas_option
= &mut *canvas1
.lock().unwrap
();
360 Ok(apply_to_canvas( |c
, d
| rgb_encode_to_canvas(c
, d
), &mut canvas_option
.0, Some((dim_x
, dim_y
)), data
)?
.img
.clone())
361 } as Result
<RgbImage
, CanvasError
>)?
;
362 let cursor
= image_to_cursor(img
, scale
)?
;
363 Ok(response_image
!(cursor
))
366 #[get("/pgen/2/{dim_x}/{dim_y}/{scale}")]
367 async
fn img_pgen2(req
: HttpRequest
, path
: web
::Path
<(u32, u32, u32)>, canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>) -> Result
<impl Responder
> {
368 let (dim_x
, dim_y
, scale
) = path
.into
_inner
();
369 let data
= extract_header
!(req
, "user-agent");
370 let img
: RgbImage
= ({
371 let canvas_option
= &mut *canvas1
.lock().unwrap
();
372 Ok(apply_to_canvas( |c
, d
| rgb_encode_to_canvas(c
, d
), &mut canvas_option
.0, Some((dim_x
, dim_y
)), data
)?
.img
.clone())
373 } as Result
<RgbImage
, CanvasError
>)?
;
374 let cursor
= image_to_cursor(img
, scale
)?
;
375 Ok(response_image
!(cursor
))
378 #[get("/pgen/3/{scale}")]
379 async
fn img_pgen3(req
: HttpRequest
, path
: web
::Path
<u32>, canvas2
: web
::Data
<Arc
<Mutex
<Canvas2
>>>) -> Result
<impl Responder
> {
380 let scale
= path
.into
_inner
();
381 let data
= extract_header
!(req
, "user-agent");
382 let time
= OffsetDateTime
::now_utc().time();
383 let (hour
, minute
): (i64, i64) = (time
.hour().into
(), time
.minute().into
());
384 let rgbimg
: RgbImage
= rgb_encode(ImageBuffer
::new(TIMEAVATAR_SIZE_U32
, TIMEAVATAR_SIZE_U32
), &mut data
.bytes())?
;
385 let resimg
: RgbImage
= ({
386 let canvas_option
= &mut *canvas2
.lock().unwrap
();
387 let mut canvas
= match canvas_option
.0.take() {
388 Some(canvas
) => canvas
,
389 None
=> Canvas
::new(60 * TIMEAVATAR_SIZE_U32
, 24 * TIMEAVATAR_SIZE_U32
)
391 overlay(&mut canvas
.img
, &rgbimg
, minute
* TIMEAVATAR_SIZE_I64
, hour
* TIMEAVATAR_SIZE_I64
);
392 Ok(canvas_option
.0.insert
(canvas
).img
.clone())
393 } as Result
<RgbImage
, CanvasError
>)?
;
394 let cursor
= image_to_cursor(resimg
, scale
)?
;
395 Ok(response_image
!(cursor
))
398 #[get("/pdrop/{canvas_id}")]
399 async
fn pdrop(canvas_id
: web
::Path
<u8>,
400 canvas0
: web
::Data
<Arc
<Mutex
<Canvas0
>>>,
401 canvas1
: web
::Data
<Arc
<Mutex
<Canvas1
>>>,
402 canvas2
: web
::Data
<Arc
<Mutex
<Canvas2
>>>) -> Result
<impl Responder
> {
404 let canvas_id
= canvas_id
.into
_inner
();
406 0 => canvas0
.lock().unwrap
().0.take(),
407 1 => canvas1
.lock().unwrap
().0.take(),
408 2 => canvas2
.lock().unwrap
().0.take(),
410 }.ok_or(CanvasError
::NotExists
)?
;
411 Ok(HttpResponse
::build(StatusCode
::OK
)
412 .body(format
!("Canvas {} dropped.", canvas_id
)))
416 #[actix_web::main] // or #[tokio::main]
417 async
fn main() -> std
::io
::Result
<()> {
418 env_logger
::builder()
419 .filter
_mod
ule
("actix_web", LevelFilter
::Info
)
423 let listenaddress
= env
::args().nth(1).unwrap
_or
_else
(|| "127.0.0.1:8080".to_string());
424 let canvas0
= Arc
::new(Mutex
::new(Canvas0(Some(Canvas
::new(32, 32)))));
425 let canvas1
= Arc
::new(Mutex
::new(Canvas1(None
)));
426 let canvas2
= Arc
::new(Mutex
::new(Canvas2(None
)));
428 HttpServer
::new(move || {
430 .wrap(Logger
::default())
442 .app_data(web
::Data
::new(canvas0
.clone()))
443 .app_data(web
::Data
::new(canvas1
.clone()))
444 .app_data(web
::Data
::new(canvas2
.clone()))
446 .bind(listenaddress
)?