Initial commit

.dockerignore

@@ -0,0 +1,2 @@
+.git
+/target

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "emoji-captcha-api"
+version = "0.1.0"
+edition = "2021"
+
+# This seems redundant, but it's necessary for Docker to work
+[[bin]]
+name = "emoji-captcha-api"
+path = "src/main.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+axum = "0.6.18"
+image = "0.24.6"
+rand = "0.8.5"
+tokio = { version = "1.28.0", features = ["macros", "rt-multi-thread"] }

Dockerfile

@@ -0,0 +1,25 @@
+FROM rust:1.69.0-slim as builder
+
+ENV CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
+
+WORKDIR /usr/src/emoji-captcha-api
+
+COPY Cargo.toml .
+COPY Cargo.lock .
+COPY docker_utils/dummy.rs .
+RUN sed -i 's|src/main.rs|dummy.rs|' Cargo.toml
+RUN cargo build --release
+RUN sed -i 's|dummy.rs|src/main.rs|' Cargo.toml
+
+COPY . .
+RUN cargo build --release
+
+FROM gcr.io/distroless/cc
+
+COPY --from=builder /usr/src/emoji-captcha-api/target/release/emoji-captcha-api /opt/emoji-captcha-api/
+ADD emojis /opt/emoji-captcha-api/emojis
+COPY allowed-emojis.txt /opt/emoji-captcha-api
+
+WORKDIR /opt/emoji-captcha-api
+
+ENTRYPOINT [ "./emoji-captcha-api" ]

LICENSE

@@ -0,0 +1,617 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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+
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+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.

Makefile

@@ -0,0 +1,17 @@
+IMAGE_NAME = emoji-captcha-api
+IMAGE_TAG = latest
+REGISTY = ghcr.io/xzeldon
+IMAGE = $(IMAGE_NAME):$(IMAGE_TAG)
+PORT = 8080
+
+build:
+	docker buildx build -t $(IMAGE) .
+
+run:
+	docker run --name $(IMAGE_NAME) --init --rm -it -p $(PORT):8080 $(IMAGE)
+
+tag:
+	docker tag $(IMAGE) $(REGISTY)/$(IMAGE_NAME)
+
+push:
+	docker push $(REGISTY)/$(IMAGE)

README.md

@@ -0,0 +1,35 @@
+# Emoji CAPTCHA
+
+> 🚨 This is forked from https://github.com/moderent/emoji-captcha and rewrited
+> with [Axum](https://lib.rs/crates/axum) instead
+> [Actix-Web](https://lib.rs/crates/actix-web) (2x perfomance boost in most
+> scenarious unexpected reason)
+
+### A CAPTCHA implementation based on identifying emojis
+
+This was exclusively developed to be used in Telegram, but might be used
+anywhere else.
+
+## Brief Description
+
+1. The client sends an HTTP request to the server.
+
+2. The server returns a generated photo that has 6 emojis inside it, along with:
+
+   - A custom header called `x-emojis` that includes the code points of the six
+     emojis in the photo plus 2 random ones in hex, shuffled, splitted by ";",
+     and the parts of each of them splitted by "-".
+
+   - A custom header called `x-correct-emojis` that only includes the code
+     points of the 6 emojis in the photo.
+
+3. The client displays the photo returned by the server, along with the emojis
+   provided in the `x-emojis` in a way the user can pick them.
+
+4. The client compares the first six emojis that the user picked with
+   `x-correct-emojis`.
+
+## Credits
+
+This wouldn't be possible without the inspirations from the CAPTCHA system at
+[@PyrogramLounge](https://t.me/PyrogramLounge).

allowed-emojis.txt

@@ -0,0 +1,497 @@
+emoji_u1f50e
+emoji_u1f94f
+emoji_u1f3d1
+emoji_u1f3ad
+emoji_u1fad1
+emoji_u1fad2
+emoji_u1f32f
+emoji_u1f9ac
+emoji_u1f99d
+emoji_u1f3b7
+emoji_u1f372
+emoji_u1fa94
+emoji_u1f48a
+emoji_u1f367
+emoji_u1f4ef
+emoji_u1f41c
+emoji_u1f4f8
+emoji_u1f3b3
+emoji_u1f4c0
+emoji_u1f948
+emoji_u1f4bb
+emoji_u1f96a
+emoji_u1f376
+emoji_u1f375
+emoji_u1f33e
+emoji_u1f35b
+emoji_u1f9fa
+emoji_u1f9a7
+emoji_u1f38b
+emoji_u1f94c
+emoji_u1f4c8
+emoji_u1f9ba
+emoji_u1f401
+emoji_u1f4e8
+emoji_u1f43d
+emoji_u1f4d7
+emoji_u1f34b
+emoji_u1f379
+emoji_u1f3ac
+emoji_u1f988
+emoji_u1f356
+emoji_u1f994
+emoji_u1f386
+emoji_u1fad4
+emoji_u1f50a
+emoji_u1f4c1
+emoji_u1f3a9
+emoji_u1f3d0
+emoji_u1f3a7
+emoji_u1f9a1
+emoji_u1f427
+emoji_u1f98b
+emoji_u1f959
+emoji_u1fa93
+emoji_u1f3b9
+emoji_u1f37b
+emoji_u1f43b
+emoji_u1f3b2
+emoji_u1f9f8
+emoji_u1f36a
+emoji_u1f94a
+emoji_u1f423
+emoji_u1f508
+emoji_u1f985
+emoji_u1f402
+emoji_u1f380
+emoji_u1f414
+emoji_u1f3c5
+emoji_u1fa91
+emoji_u1f3b0
+emoji_u1f4bf
+emoji_u1f3b4
+emoji_u1f36b
+emoji_u1f37a
+emoji_u1fa9c
+emoji_u1f996
+emoji_u1f963
+emoji_u1f368
+emoji_u1f42e
+emoji_u1f33b
+emoji_u1f484
+emoji_u1faa6
+emoji_u1f426
+emoji_u1f43e
+emoji_u1f4eb
+emoji_u1f4bd
+emoji_u1f391
+emoji_u1f36f
+emoji_u1f9a2
+emoji_u1fa78
+emoji_u1f418
+emoji_u1f947
+emoji_u1f340
+emoji_u1f424
+emoji_u1f9cb
+emoji_u1fad3
+emoji_u1f4b8
+emoji_u1fa81
+emoji_u1f004
+emoji_u1f943
+emoji_u1f332
+emoji_u1f4b9
+emoji_u1f98f
+emoji_u1f9c8
+emoji_u1f405
+emoji_u1f9e9
+emoji_u1f361
+emoji_u1f965
+emoji_u1f34d
+emoji_u1f96c
+emoji_u1f50f
+emoji_u1f998
+emoji_u1f490
+emoji_u1f940
+emoji_u1f3c6
+emoji_u1f421
+emoji_u1f4d5
+emoji_u1f3b1
+emoji_u1f4d4
+emoji_u1f4c6
+emoji_u1f429
+emoji_u1f9af
+emoji_u1f359
+emoji_u1f4be
+emoji_u1f4c3
+emoji_u1f42d
+emoji_u1f4cc
+emoji_u1fa85
+emoji_u1f4ff
+emoji_u1f4d2
+emoji_u1f52c
+emoji_u1f99c
+emoji_u1f4c2
+emoji_u1f37c
+emoji_u1f514
+emoji_u1f9f9
+emoji_u1f527
+emoji_u1f969
+emoji_u1f4cb
+emoji_u1f967
+emoji_u1f431
+emoji_u1f9a4
+emoji_u1f353
+emoji_u1f989
+emoji_u1f94b
+emoji_u1f4e9
+emoji_u1f4cd
+emoji_u1f37e
+emoji_u1f3a4
+emoji_u1f4ed
+emoji_u1f3b8
+emoji_u1f451
+emoji_u1f33f
+emoji_u1f43a
+emoji_u1f335
+emoji_u1f387
+emoji_u1f357
+emoji_u1fad6
+emoji_u1f42b
+emoji_u1f363
+emoji_u1f43c
+emoji_u1f4e7
+emoji_u1f35c
+emoji_u1f513
+emoji_u1f369
+emoji_u1f4c4
+emoji_u1f37f
+emoji_u1f358
+emoji_u1f371
+emoji_u1f9c2
+emoji_u1fa95
+emoji_u1f961
+emoji_u1f408
+emoji_u1f41e
+emoji_u1f360
+emoji_u1f52a
+emoji_u1f41b
+emoji_u1f382
+emoji_u1f4cf
+emoji_u1f434
+emoji_u1f3ab
+emoji_u1f995
+emoji_u1f42a
+emoji_u1f9c9
+emoji_u1f982
+emoji_u1f433
+emoji_u1f9ef
+emoji_u1f3bc
+emoji_u1f32e
+emoji_u1f3ee
+emoji_u1faa4
+emoji_u1f9a6
+emoji_u1f409
+emoji_u1f9ec
+emoji_u1f393
+emoji_u1f436
+emoji_u1f4d3
+emoji_u1f435
+emoji_u1f9fc
+emoji_u1f378
+emoji_u1f511
+emoji_u1f986
+emoji_u1faa2
+emoji_u1f389
+emoji_u1f33c
+emoji_u1f9c3
+emoji_u1f951
+emoji_u1faa7
+emoji_u1f4c9
+emoji_u1f6ac
+emoji_u1f52b
+emoji_u1f3a8
+emoji_u1fa97
+emoji_u1f334
+emoji_u1f422
+emoji_u1f993
+emoji_u1f6aa
+emoji_u1f96f
+emoji_u1f346
+emoji_u1faa3
+emoji_u1f4c5
+emoji_u1f4f0
+emoji_u1f95e
+emoji_u1f3af
+emoji_u1f968
+emoji_u1f417
+emoji_u1f383
+emoji_u1f40f
+emoji_u1fa7a
+emoji_u1f9a0
+emoji_u1f384
+emoji_u1f40e
+emoji_u1f3bf
+emoji_u1f4c7
+emoji_u1f4f7
+emoji_u1f407
+emoji_u1fa98
+emoji_u1f4d8
+emoji_u1f416
+emoji_u1f507
+emoji_u1f97c
+emoji_u1f347
+emoji_u1f437
+emoji_u1f410
+emoji_u1f9a8
+emoji_u1f4e1
+emoji_u1f413
+emoji_u1f956
+emoji_u1f4d1
+emoji_u1f516
+emoji_u1f3b5
+emoji_u1f97d
+emoji_u1f6c1
+emoji_u1f510
+emoji_u1f458
+emoji_u1f9f2
+emoji_u1f983
+emoji_u1f3b6
+emoji_u1f4d6
+emoji_u1f96d
+emoji_u1f430
+emoji_u1f52d
+emoji_u1f526
+emoji_u1f35e
+emoji_u1f438
+emoji_u1f945
+emoji_u1f34e
+emoji_u1f36e
+emoji_u1f38a
+emoji_u1f509
+emoji_u1f373
+emoji_u1f34c
+emoji_u1f40c
+emoji_u1f99f
+emoji_u1f350
+emoji_u1f338
+emoji_u1f9ee
+emoji_u1fa9e
+emoji_u1f425
+emoji_u1f6bd
+emoji_u1f990
+emoji_u1f4ca
+emoji_u1f95b
+emoji_u1f48e
+emoji_u1f33d
+emoji_u1f9e8
+emoji_u1f9a9
+emoji_u1f365
+emoji_u1f381
+emoji_u1f439
+emoji_u1f9a5
+emoji_u1f4b0
+emoji_u1f489
+emoji_u1f400
+emoji_u1f4ec
+emoji_u1f9c6
+emoji_u1f6d2
+emoji_u1f96b
+emoji_u1f41a
+emoji_u1f4de
+emoji_u1f991
+emoji_u1f348
+emoji_u1f9e7
+emoji_u1f98d
+emoji_u1f3ba
+emoji_u1f4ae
+emoji_u1f40b
+emoji_u1f9c4
+emoji_u1fa86
+emoji_u1f4ee
+emoji_u1f4b6
+emoji_u1f515
+emoji_u1f4f1
+emoji_u1f3a3
+emoji_u1f941
+emoji_u1fa83
+emoji_u1f4e4
+emoji_u1f987
+emoji_u1f9ca
+emoji_u1f3f8
+emoji_u1f4f9
+emoji_u1f528
+emoji_u1f4df
+emoji_u1f48d
+emoji_u1f9f4
+emoji_u1f351
+emoji_u1f339
+emoji_u1faa1
+emoji_u1f4d9
+emoji_u1f370
+emoji_u1f93f
+emoji_u1f4dd
+emoji_u1f9c5
+emoji_u1f35d
+emoji_u1fa99
+emoji_u1f958
+emoji_u1f390
+emoji_u1f355
+emoji_u1f9fe
+emoji_u1f4fa
+emoji_u1f9ab
+emoji_u1f4e2
+emoji_u1f9aa
+emoji_u1f3d2
+emoji_u1f419
+emoji_u1f517
+emoji_u1f3c8
+emoji_u1f6bf
+emoji_u1f98a
+emoji_u1f9ad
+emoji_u1fa96
+emoji_u1f9f6
+emoji_u1f6d7
+emoji_u1f3cf
+emoji_u1f9eb
+emoji_u1f95d
+emoji_u1f40d
+emoji_u1f4b5
+emoji_u1f42f
+emoji_u1f3be
+emoji_u1f337
+emoji_u1f9ae
+emoji_u1f366
+emoji_u1fa79
+emoji_u1f94d
+emoji_u1faa5
+emoji_u1fa9d
+emoji_u1f35a
+emoji_u1fab1
+emoji_u1f4b7
+emoji_u1fa9a
+emoji_u1f32d
+emoji_u1f428
+emoji_u1f50d
+emoji_u1f333
+emoji_u1f6f7
+emoji_u1f41d
+emoji_u1f4f2
+emoji_u1f5ff
+emoji_u1f36d
+emoji_u1f34a
+emoji_u1f98c
+emoji_u1f4e3
+emoji_u1f4e0
+emoji_u1f0cf
+emoji_u1f42c
+emoji_u1f3d3
+emoji_u1f41f
+emoji_u1f50c
+emoji_u1f95a
+emoji_u1f4ce
+emoji_u1f349
+emoji_u1f388
+emoji_u1f949
+emoji_u1faa0
+emoji_u1fa9f
+emoji_u1f352
+emoji_u1f4b4
+emoji_u1f99b
+emoji_u1f38d
+emoji_u1f3ae
+emoji_u1fa92
+emoji_u1f3a5
+emoji_u1f404
+emoji_u1f34f
+emoji_u1f944
+emoji_u1f9ea
+emoji_u1f36c
+emoji_u1f411
+emoji_u1f403
+emoji_u1f33a
+emoji_u1fab3
+emoji_u1f9ff
+emoji_u1fab6
+emoji_u1f953
+emoji_u1f9a3
+emoji_u1f999
+emoji_u1f9c7
+emoji_u1f374
+emoji_u1f957
+emoji_u1f4dc
+emoji_u1f38e
+emoji_u1f9f7
+emoji_u1f3c9
+emoji_u1f512
+emoji_u1f997
+emoji_u1f52e
+emoji_u1f406
+emoji_u1f964
+emoji_u1f950
+emoji_u1f962
+emoji_u1f954
+emoji_u1f40a
+emoji_u1f9fb
+emoji_u1f9f5
+emoji_u1f343
+emoji_u1f4e6
+emoji_u1f377
+emoji_u1f9e2
+emoji_u1f96e
+emoji_u1f35f
+emoji_u1f992
+emoji_u1f420
+emoji_u1fad0
+emoji_u1f415
+emoji_u1f331
+emoji_u1f95f
+emoji_u1f4b3
+emoji_u1f98e
+emoji_u1f412
+emoji_u1f432
+emoji_u1fad5
+emoji_u1f4ea
+emoji_u1f3bd
+emoji_u1f38f
+emoji_u1f984
+emoji_u1f955
+emoji_u1f529
+emoji_u1f330
+emoji_u1f4a1
+emoji_u1f9c0
+emoji_u1f94e
+emoji_u1f942
+emoji_u1f981
+emoji_u1fab0
+emoji_u1f50b
+emoji_u1f9f0
+emoji_u1f345
+emoji_u1f362
+emoji_u1f3bb
+emoji_u1fa9b
+emoji_u1f342
+emoji_u1f4d0
+emoji_u1fa84
+emoji_u1f364
+emoji_u1f9fd
+emoji_u1f99e
+emoji_u1f4da
+emoji_u1f344
+emoji_u1fa80
+emoji_u1f3c0
+emoji_u1f4e5
+emoji_u1f960
+emoji_u1f95c
+emoji_u1f952
+emoji_u1f99a
+emoji_u1f9c1
+emoji_u1f341
+emoji_u1f4fb
+emoji_u1f980
+emoji_u1f4bc
+emoji_u1f966
+emoji_u1f462
+emoji_u1f3f9
+emoji_u1f354
+emoji_u1fab4
+emoji_u1f4fc

docker_utils/dummy.rs

@@ -0,0 +1 @@
+fn main() {}